qcvn 14

CNG HO X HI CH NGHA VIT NAM

QCVN 14:2010/BTTTT

QUY CHUN K THUT QUC GIA V THIT B TRM GC THNG TIN DI NG CDMA 20001X

National technical regulation on Cellular Mobile CDMA 20001x

Base Station Equipment

H NI - 2010

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Mc lc

1. QUY NH CHUNG ................................................................................................ 5

1.1. Phm vi iu chnh ........................................................................................ 5

1.2. i tng p dng ........................................................................................ 5

1.3. Gii thch t ng, ch vit tt ...................................................................... 5

2. QUY NH K THUT ......................................................................................... 13

2.1. Yu cu i vi phn thu CDMA ................................................................ 13 2.1.1. Yu cu v tn s................................................................................... 13 2.1.2. c tnh phn thu ................................................................................... 14 2.1.3. Gii hn v pht x ................................................................................ 17

2.2. Yu cu i vi phn pht CDMA .............................................................. 18 2.2.1. Cc yu cu v tn s ............................................................................ 18 2.2.2. Cc yu cu v iu ch ........................................................................ 19 2.2.3. Cc yu cu v cng sut ra cao tn ..................................................... 19 2.2.4. Cc gii hn cc pht x........................................................................ 21

2.3. Cc quy nh chung cho CDMA ................................................................. 26 2.3.1. in th ngun v nhit ..................................................................... 26 2.3.2. m cao .............................................................................................. 26 2.3.3. Cc pht x dn ngun in xoay chiu................................................. 27

2.4. Cc ch o kim..................................................................................... 27

2.5. Quy trnh chun o cc pht x ................................................................. 28 2.5.1. o cc pht x bc x............................................................................ 28 2.5.2. o cc pht x dn ngun in AC........................................................ 31

2.6. Cc iu kin tiu chun cho th nghim................................................. 32 2.6.1. Thit b mu chun................................................................................. 32 2.6.2. iu kin mi trng th nghim chun ................................................ 32 2.6.3. iu kin chun v ngun s cp .......................................................... 32 2.6.4. Thit b kim tra chun ........................................................................... 33 2.6.5. Thit lp s chc nng o................................................................. 41 2.6.6. Chu k lm vic tiu chun..................................................................... 46 2.6.7. o t l li khung.................................................................................... 46 2.6.8. Cc gii hn v tin cy ...................................................................... 47

3. QUY NH V QUN L ..................................................................................... 50

4. TRCH NHIM CA T CHC, C NHN........................................................ 50

5. T CHC THC HIN ........................................................................................ 50

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Li ni u

QCVN 14:2010/BTTTT c xy dng trn c s sot xt, chuyn i Tiu chun Ngnh TCN 68-233:2005 Thit b trm gc thng tin di ng CDMA 2000-1x - Yu cu k thut ban hnh theo Quyt nh s 28/2005/Q-BBCVT ngy 17 thng 08 nm 2005 ca B trng B Bu chnh, Vin thng (nay l B Thng tin v Truyn thng).

Cc yu cu k thut quy nh trong QCVN 14:2010/BTTTT ph hp vi ti liu C.S0010-A Tiu chun khuyn ngh cc c tnh ti thiu cho trm gc tri ph cdma2000 ca 3rd Generation Partnership Project 2 (3GPP2).

QCVN 14:2010/BTTTT do Vin Khoa hc K thut Bu in bin son, V Khoa hc v Cng ngh trnh duyt v c ban hnh km theo Thng t s 18/2010/TT-BTTTT ngy 30 thng 07 nm 2010 ca B trng B Thng tin v Truyn thng.

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QCVN 14:2010/BTTTT

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QUY CHUN K THUT QUC GIA V THIT B TRM GC THNG TIN DI NG CDMA 2000-1X

National technical regulation on Cellular Mobile CDMA 2000-1x

Base Station Equipment

1. QUY NH CHUNG

1.1. Phm vi iu chnh

Quy chun k thut quc gia ny qui nh cc yu cu thit yu v phng php o i vi thit b trm gc thng tin di ng s dng cng ngh a truy nhp phn chia theo m CDMA 2000-1x hot ng trong cc bng tn 450 MHz, 800 MHz v 2 GHz.

1.2. i tng p dng

Quy chun ny p dng i vi cc c quan, t chc, nh sn xut, nhp khu v khai thc thit b trm gc thng tin di ng CDMA 2000-1x hot ng trong cc bng tn 450 MHz, 800 MHz v 2 GHz.

1.3. Gii thch t ng, ch vit tt

Trong Quy chun ny, cc t ng, ch vit tt di y c hiu nh sau:

1.3.1. AWGN (Additive White Gaussian Noise)

Tp m Gau-s trng cng.

1.3.2. n nh tn s CDMA (CDMA frequency assignment)

Mt on bng tn rng 1,23 MHz. i vi di tn s 800 MHz th tn s trung tm ca cc knh cch nhau mt khong 30 kHz. Vi di tn s 2 GHz th tn s trung tm ca cc knh cch nhau 50 kHz. Vi di tn 450 MHz th tn s trung tm ca cc knh cch nhau 20 kHz hoc 25 kHz.

1.3.3. B cc tn s CDMA a thch (CDMA preferred set)

Tp hp cc knh CDMA trong mt h thng CDMA m mt my di ng thng chn tm kim knh CDMA hoa tiu.

1.3.4. B ch th cht lng khung (frame quality indicator)

Kim tra CRC cho cc khung knh lu lng 9,6 v 4,8 kbit/s ca cu hnh v tuyn 1, cho tt c cc khung knh lu lng ng ln i vi cu hnh v tuyn 2 n 9, tt c cc khung knh lu lng vng v i vi cu hnh v tuyn t 2 n 6, knh qung b, knh n nh chung, knh truy nhp nng cao v knh iu khin chung vng v.

1.3.5. B ch th cht lng tn hiu thu c (Received Signal Quality Indicator - RSQI)

o cht lng tn hiu trn Knh lu lng ng ln lin quan n t s Eb/N0 thu c. Xem thm Eb.

1.3.6. Bit iu khin cng sut (power control bit)

Bit c gi i cch nhau 1,25 ms trn knh lu lng ng ln, bo hiu rng my in thoi di ng tng/gim cng sut ca n.

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1.3.7. Bit iu khin cng sut hp l (valid power control bit)

Bit iu khin cng sut hp l c gi trn knh lu lng ng xung trong nhm iu khin cng sut th hai theo sau nhm iu khin cng sut knh lu lng ng ln tng ng nhng khng trong trng thi ca ng v c mc tn hiu tt.

1.3.8. Cu hnh v tuyn (Radio Configuration - RC)

Mt tp cc dng pht tn hiu trn knh lu lng ng xung v knh lu lng ng ln, cc dng ny c m t bng cc tham s ca lp vt l nh: tc pht, tnh cht iu ch v tc lan truyn.

1.3.9. CDMA (Code Division Multiple Access)

Xem a truy nhp phn chia theo m.

1.3.10. Ch truy nhp c s (basic access mode)

Ch s dng knh truy nhp nng cao theo my di ng pht mt mo u knh truy nhp nng cao ri sau n d liu, ging nh phng php s dng trn knh truy nhp.

1.3.11. Ch truy nhp iu khin cng sut (power controlled access mode)

Mt ch trn knh truy nhp nng cao ch ny mt my di ng truyn mt mo u truy nhp nng cao, mt nh du bt u truy nhp nng cao v d liu truy nhp nng cao trong knh d truy nhp nng cao s dng iu khin cng sut vng kn.

1.3.12. Ch truy nhp nh trc (designated access mode)

Ch hot ng trn knh iu khin chung ng ln ca my di ng dng tr li cc yu cu m n nhn c trn knh iu khin chung ng xung.

1.3.13. Ch truy nhp gi ch (reservation access mode)

Ch s dng trn knh truy nhp nng cao v knh iu khin chung ng ln, ch ny mt my di ng pht mt mo u truy nhp nng cao v mt nh du bt u truy nhp nng cao trn knh d truy nhp nng cao. D liu truy nhp nng cao c pht trn mt knh iu khin chung ng ln s dng iu khin cng sut bng vng kn.

1.3.14. Chui thm d truy nhp (access probe sequence)

Mt chui gm mt hay nhiu thm d truy nhp trn knh truy nhp hoc trn knh truy nhp m rng. Cng mt bn tin knh truy nhp hoc bn tin knh truy nhp m rng c pht i trong tt c thm d truy nhp ca mt c gng truy nhp.

1.3.15. Chc nng tng cng sut (Power Up Function - PUF)

Phng php m nh my di ng tng cng sut ra ca my h tr cc dch v ti v tr ca n.

1.3.16. C gng truy nhp (access attempt)

Mt chui ca mt hay nhiu chui thm d truy nhp trn knh truy nhp hoc trn knh truy nhp m rng s dng cng mt bn tin xin truy nhp.

1.3.17. D PUF (PUF probe)

Mt hoc nhiu khung lin tip trn knh lu lng ng ln trong my di ng truyn xung PUF.

1.3.18. a truy nhp phn chia theo m (Code Division Multiple Access - CDMA)

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Mt k thut dng trong thng tin s a truy nhp tri ph to ra cc knh thng qua vic s dng mt chui m duy nht.

1.3.19. nh thi h thng (system time)

Chun thi gian ca h thng. nh thi h thng c ng b vi thi gian UTC (tr i vi cc giy cch qung) v s dng cng thi gian ban u nh l nh thi gian ca H thng nh v ton cu. Tt c cc trm gc s dng cng thi gian h thng (vi li rt nh). Cc my di ng s dng cng thi gian h thng, lch do tr lan truyn t trm gc n my di ng.

1.3.20. Eb

Nng lng trn mi bit thng tin ti cng vo RF ca trm gc.

1.3.21. Hm Walsh (Walsh function)

Mt trong 2N hm nh phn trc giao.

1.3.22. H s tch cc khung (frame activity)

T s gia s khung ang hot ng trn tng s khung khi knh lm vic.

1.3.23. Knh n nh chung (common assignment channel)

Mt knh ng xung chung c s dng bi trm gc bo xc nhn cho my di ng ang truy nhp knh truy nhp m rng. Trong trng hp s dng ch truy nhp d phng, knh ny dng truyn a ch ca knh iu khin chung ng ln v a ch ca phn knh iu khin cng sut chung tng ng vi n.

1.3.24. Knh CDMA (CDMA channel)

Mt tp cc knh c pht gia trm gc v my di ng trn mt tn s cho trc.

1.3.25. Knh CDMA ng ln (reverse CDMA channel)

Knh CDMA t my in thoi di ng ti trm gc. Nhn t trm gc, knh CDMA ng ln l tng ca tt c cc ng truyn dn t cc my in thoi di ng trn tn s CDMA c n nh.

1.3.26. Knh CDMA ng xung (forward CDMA channel)

Mt knh CDMA t trm gc ti cc my di ng. Knh CDMA ng xung bao gm mt hoc nhiu knh m c truyn trn mt tn s CDMA n nh s dng mt dch knh hoa tiu PN ring.

1.3.27. Knh c s ng ln (reverse fundamental channel)

Mt phn knh lu lng ng ln mang d liu mc cao v thng tin iu khin t mt my di ng n mt trm gc.

1.3.28. Knh c s ng xung (forward fundamental channel)

Mt phn ca knh lu lng ng xung trn mang mt t hp d liu mc cao hn v thng tin iu khin cng sut.

1.3.29. Knh iu khin chung ng ln (reverse common control channel)

Mt phn ca Knh CDMA ng ln dng truyn thng tin iu khin s t mt hoc nhiu my di ng n mt trm gc. Knh iu khin chung ng ln c th hot ng ch truy nhp gi ch (Reservation Access Mode) hoc ch truy nhp nh (Designated Acess Mode). Knh ny c th c iu khin cng sut trong ch truy nhp gi ch, hoc trong ch truy nhp nh v c th h tr chuyn giao mm trong ch truy nhp gi ch.

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1.3.30. Knh iu khin chung ng xung (forward common control channel)

Knh iu khin dng truyn cc thng tin iu khin t trm gc ti my di ng.

1.3.31. Knh iu khin chuyn dng ng ln (reverse dedicated control channel)

Mt phn ca cu hnh v tuyn t 3 n 6 ca knh lu lng ng ln dng truyn d liu mc cao hn v thng tin iu khin t mt my di ng n mt trm gc.

1.3.32. Knh iu khin chuyn dng ng xung (forward dedicated control channel)

Mt phn ca knh lu lng ng xung vi cu hnh v tuyn t 3 n 9 dng truyn d liu mc cao hn, thng tin iu khin v thng tin iu khin cng sut t trm gc ti my di ng.

1.3.33. Knh iu khin cng sut chung (common power control channel)

Mt knh chung ng xung dng pht cc bit iu khin cng sut ti nhiu my di ng. Knh ny c s dng bi cc my di ng hot ng ch truy nhp iu khin theo cng sut, ch truy nhp gi ch v ch truy nhp nh trc.

1.3.34. Knh ng b (sync channel)

Knh m 32 trong knh CDMA ng xung truyn ti bn tin ng b ti my di ng.

1.3.35. Knh hoa tiu (pilot channel)

Mt tn hiu tri ph chui trc tip khng iu ch c pht i bi mt trm gc hoc mt my di ng a truy nhp phn chia theo m - CDMA. Mt knh hoa tiu cung cp mt pha chun dng cho gii iu ch lin kt v c th cung cp phng tin so snh cng ca tn hiu thu c t cc trm gc xc nh khi no th chuyn giao.

1.3.36. Knh hoa tiu ng ln (reverse pilot channel)

Tn hiu tri ph chui trc tip khng iu ch c pht lin tc bi mt my di ng CDMA. Knh hoa tiu ng ln cung cp mt pha chun gii iu ch kt hp v c th cung cp mt cch o cng ca tn hiu.

1.3.37. Knh hoa tiu ng xung (forward pilot channel)

Mt tn hiu tri ph trc tip, khng iu ch c trm gc CDMA pht lin tc. Knh hoa tiu cho php my di ng nhn c tn hiu nh thi ca knh CDMA ng xung, m bo s tham chiu v pha cho gii iu ch v l phng tin so snh cng tn hiu gia cc trm gc xc nh thi im chuyn giao.

1.3.38. Knh hoa tiu phn tp pht (transmit diversity pilot channel)

Tn hiu tri ph trc tip khng iu ch c truyn lin tc bi mt trm gc CDMA h tr phn tp pht ng xung. Knh hoa tiu v knh hoa tiu phn tp pht cung cp pha chun gii iu ch kt hp cc knh CDMA ng xung c s dng phn tp pht.

1.3.39. Knh lu lng (traffic channel)

ng thng tin gia my di ng v trm gc dng truyn thng tin ca ngi s dng v bo hiu. Thut ng knh lu lng hm mt cp knh lu lng

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ng xung v knh lu lng ng ln. Xem knh lu lng ng xung v knh lu lng ng ln.

1.3.40. Knh lu lng ng ln (reverse traffic channel)

Mt knh lu lng trn s liu v bo hiu c truyn t my di ng n trm gc. Knh lu lng ng ln c to bi 1 knh iu khin chuyn dng ng ln, 1 knh c s ng ln, 0 n 2 knh ph ng ln, v 0 n 7 knh m ph ng ln.

1.3.41. Knh lu lng ng xung (forward traffic channel)

Mt hoc nhiu knh m dng truyn thng tin ca ngi s dng v thng tin bo hiu t trm gc n my di ng.

1.3.42. Knh m (code channel)

Mt phn knh ca mt knh CDMA ng xung hoc mt knh CDMA ng ln. Mi phn knh s dng mt hm trc giao Walsh hoc mt hm i - trc giao.

1.3.43. Knh m ph ng ln (reverse supplemental code channel)

Mt phn ca cu hnh v tuyn 1 v 2 ca knh lu lng ng ln hot ng kt hp vi knh c s ng ln ca knh lu lng ng ln v (c th la chn) vi cc knh m ph ng ln khc cung cp cc dch v tc s liu cao hn, v trn s liu c truyn mc cao hn.

1.3.44. Knh m ph ng xung (forward supplemental code channel)

Mt phn ca knh lu lng ng xung vi cu hnh v tuyn 1 v 2 hot ng kt hp vi mt knh c s ng xung trong knh lu lng ng xung cung cp cc dch v c tc d liu cao, v trn knh ny d liu mc cao c pht.

1.3.45. Knh nhn tin (paging channel)

Mt knh m knh CDMA ng xung dng truyn cc thng tin iu khin v cc bn tin nhn t mt trm gc n my di ng.

1.3.46. Knh nhn tin chnh (primary paging channel)

Knh m mc nh (knh m 1) c n nh cho nhn tin trn knh CDMA.

1.3.47. Knh ph ng ln (reverse supplemental channel)

Mt phn ca cu hnh v tuyn t 3 n 6 ca knh lu lng ng ln hot ng kt hp vi knh c s ng ln hoc knh iu khin chuyn dng ng ln ca knh lu lng ng ln cung cp cc dch v c tc s liu cao hn v trn truyn d liu mc cao hn.

1.3.48. Knh ph ng xung (forward supplemental channel)

Mt phn ca knh lu lng ng xung vi cu hnh v tuyn t 3 n 9 hot ng kt hp vi knh c s ng xung hoc knh iu khin chuyn dng ng xung trn knh lu lng ng xung cung cp cc dch v c tc d liu cao, v trn knh ny d liu mc cao c pht.

1.3.49. Knh truy nhp (access channel)

Mt knh CDMA ng ln c my di ng s dng nhm lin lc vi trm gc. Knh truy nhp c s dng trao i cc bn tin bo hiu ngn nh khi to cuc gi, tr li nhn tin v cc ng k. Knh truy nhp l loi knh truy nhp ngu nhin c phn khe.

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1.3.50. Knh truy nhp nng cao (enhanced access channel)

Knh ng ln c my di ng s dng lin lc vi trm gc. Knh ny hot ng trong cc ch truy nhp c s, ch truy nhp iu khin theo cng sut v ch truy nhp gi ch. Knh ny c dng truyn cc bn tin ngn nh bo hiu, bn tin MAC, xc nhn tin nhn hay khi to cuc gi. Knh ny cng c th c s dng truyn cc gi d liu kch c trung bnh.

1.3.51. Khung (frame)

Mt khong thi gian c bn trong h thng. i vi knh ng b (Sync Channel), mt khung di 26,666... ms. i vi knh truy nhp, knh nhn tin, knh qung b, knh m ph ng xung, v knh m ph ng ln, mt khung di 20 ms. i vi knh ph ng xung, knh ph ng ln, mt khung di 20, 40, hoc 80 ms. i vi knh truy nhp nng cao, knh iu khin chung ng xung, v knh iu khin chung ng ln, mt khung di 5, 10, hoc 20 ms. i vi knh c s ng xung, knh iu khin chuyn dng ng xung, knh c s ng ln, v knh iu khin chuyn dng ng ln, mt khung di 5 hoc 20 ms. i vi knh n nh chung, mt khung di 5 ms.

1.3.52. Khung tch cc (active frame)

Mt khung cha d liu v v th v mt pht x, chng mang nng lng cao hn.

1.3.53. K hiu m (code symbol)

Cc tn hiu ra ca mt b m ha sa li. Cc bit thng tin c a vo mt b m ha v tn hiu u ra ca b m ha c gi l cc k hiu m.

1.3.54. LISN (Line Impedance Stabilization Network)

Xem Mng n nh tr khng ng dy.

1.3.55. Mo u (preamble)

Xem mo u knh truy nhp (Access Channel preamble), mo u knh truy nhp nng cao (Enhanced Access Channel preamble), mo u knh iu khin chung ng ln (Reverse Common Channel preamble), v mo u knh lu lng ng ln (Reverse traffic Channel Preamble).

1.3.56. Mo u knh iu khin chung ng ln (reverse common control channel preamble)

Mt phn mang d liu rng ca knh iu khin chung ng ln c gi bi my di ng tr gip trm gc trong qu trnh thu ban u v c on knh.

1.3.57. Mo u knh lu lng ng ln (reverse traffic channel preamble)

Phn mang s liu rng ca knh hoa tiu ng ln pht i t my di ng tr gip cho trm gc thu ban u v c on knh cho knh iu khin chuyn dng ng ln v knh c s ng ln.

1.3.58. Mo u knh truy nhp (access channel preamble)

Phn mo u ca mt thm d truy nhp, cha mt chui cc khung ton l 0, pht tc 4800 bit/s.

1.3.59. My di ng (Mobile Station)

Mt thit b c s dng trong khi ang di chuyn hoc khi dng nhng im bt k. My di ng bao gm c cc my xch tay (v d nh cc thit b c nhn cm tay) v cc thit b lp trn xe.

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1.3.60. Mng n nh tr khng ng dy (Line Impedance Stabilization Network - LISN)

Mt mng c xen vo dy dn ngun cung cp chnh ca h thng o kim. Trong phm vi tn s cho mng ny dng cung cp mt tr khng ti xc nh o cc in p xuyn nhiu v mng cn c th cch ly h thng khi ngun cung cp chnh trong di tn s .

1.3.61. M ha Turbo (Turbo code)

Mt kiu m sa li. Mt mu ca m ha da trn u ra ca m vng hi quy ca m ha Turbo.

1.3.62. Mcps (Megachips per second)

Megachip trn giy (106 chip trn 1 giy).

1.3.63. MER (Message Error Rate)

T l li bn tin.

1.3.64. Nhm iu khin cng sut (power control group)

Mt khong thi gian 1,25 ms trn knh lu lng ng xung v knh lu lng ng ln. Xem bit iu khin cng sut.

1.3.65. N0

Mt ph nng lng hu ch ca tp m hoc nhiu trong bng.

1.3.66. OTD (Orthogonal Transmit Diversity)

Xem Phn tp pht trc giao.

1.3.67. Phn knh iu khin cng sut chung (common power control subchannel)

Mt phn knh ca knh iu khin cng sut chung c trm gc dng iu khin cng sut ca cc my di ng hot ng trong ch truy nhp iu khin theo cng sut trn knh truy nhp nng cao hoc hot ng trong ch truy nhp gi ch v ch truy nhp nh trc trn knh iu khin chung ng ln.

1.3.68. Phn knh iu khin cng sut ng xung (forward power control subchannel)

Mt phn knh trong knh c s ng xung hoc knh iu khin chuyn dng ng xung c trm gc dng iu khin cng sut ca my di ng khi hot ng trn knh lu lng ng ln.

1.3.69. Phn tp pht trc giao (Orthogonal Transmit Diversity - OTD)

Phng php truyn trn knh ng xung phn chia cc biu tng knh ng xung gia cc ng ten t hp v tri cc biu tng vi mt hm Walsh duy nht hoc hm gn trc giao lin quan ti mi ng ten.

1.3.70. Ppm (parts per million)

Phn triu.

1.3.71. PUF (Power Up Function)

Xem Chc nng tng cng sut.

1.3.72. RC (Radio Configuration)

Xem Cu hnh v tuyn.

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1.3.73. RMS (Root of Mean Square)

Gi tr hiu dng.

1.3.74. RSQI (Received Signal Quality Indicator)

Xem B ch th cht lng tn hiu thu c.

1.3.75. S tri khng gian thi gian (Space Time Spreading - STS)

Mt phng php truyn ng xung theo tt c cc knh m ng xung c t hp cc ng ten v m tri ph Walsh b sung hoc cc hm cn trc giao.

1.3.76. S knh CDMA (CDMA channel number)

Mt con s 11 bit tng ng vi tn s trung tm ca mt n nh tn s CDMA.

1.3.77. SR (Spreading Rate)

Xem Tc tri ph.

1.3.78. STS (Space Time Spreading)

Xem S tri khng gian thi gian.

1.3.79. TD (Transmit Diversity schemes)

S phn tp pht, k c OTD v STS.

1.3.80. Thm d truy nhp (access probe)

Vic pht trn knh truy nhp mt mo u v mt bn tin xin truy nhp. Ln pht ny c di l mt s nguyn ln cc khung v mt bn tin knh truy nhp.

1.3.81. Tc tri ph (Spreading Rate - SR)

Tc chip PN ca knh CDMA ng xung hoc knh CDMA ng ln, c nh ngha nh l mt bi s ca 1,2288 Mcps (Megachip/giy).

1.3.82. Tc tri ph 1 (Spreading Rate 1)

Tc tri ph 1 thng c ghi l "1X". Mt knh CDMA ng xung tc tri ph 1 dng mt sng mang tri ph chui trc tip vi tc chip 1,2288 Mcps. Mt knh CDMA ng ln tc tri ph 1 s dng mt sng mang tri ph chui trc tip vi tc chip 1,2288 Mcps.

1.3.83. Trm gc (Base Station)

Mt trm c nh c s dng lin lc vi cc my di ng. Ty tng ng cnh, trm gc cn c th c hiu l mt t bo (cell), mt vng (sector) trong mt t bo, mt MSC hay cc thnh phn khc ca h thng di ng.

1.3.84. Trung tm chuyn mch di ng (Mobile Switching Center - MSC)

Mt nhm thit b dng cung cp cc dch v t bo hoc PCS.

1.3.85. T l li bn tin (Message Error Rate - MER)

T l gia s bn tin nhn b li trong knh nhn tin hoc knh iu khin chung ng xung so vi tng s cc bn tin.

1.3.86. T l tht thot knh k (Adjacent Channel Leakage Ratio - ACLR)

T l gia nng lng pht knh cho i vi nng lng o c mt trong cc knh k vi n.

1.3.87. Xung PUF (PUF pulse)

Mt phn ca d PUF c th c pht cng sut ra cao.

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2. QUY NH K THUT

2.1. Yu cu i vi phn thu CDMA

Thit b thu ca trm gc thng tin di ng CDMA phi bao gm 2 cng vo RF phn tp. Cc php o phn thu c tin hnh trn c 2 cng ny, tr trng hp quy nh khc. Cc cu hnh ca thit b cp trong phn ny mang tnh cht khuyn co. Cc cu hnh khc c th cng cn thit i vi php o thc t do gii hn ca thit b hoc do dung sai.

2.1.1. Yu cu v tn s

2.1.1.1. Di tn 800 MHz

Khong cch knh, s th t knh CDMA v tn s trung tm knh CDMA phi tun theo Bng 1. Tn s n nh cho my thu phi tng ng vi tn s n nh cho my pht CDMA ti trm gc. Mi tn s n nh c hiu l tn s trung tm ca knh tn.

Bng 1 - S knh CDMA v tn s tng ng di tn 800 MHz

My pht S knh CDMA Tn s (MHz)

N = 1 n 799 0,03 N + 825 My di ng

N = 991 n 1023 0,03 (N - 1023) + 825

N = 1 n 799 0,03 N + 870 Trm gc

N = 991 n 1023 0,03 (N - 1023) + 870

2.1.1.2. Di tn 2 GHz


Bng 2 - S knh CDMA v tn s tng ng di tn 2 GHz


My di ng N = 0 n 1199 1920 + 0,050 N

Trm gc N = 0 n 1199 2110 + 0,050 N

2.1.1.3. Di tn 450 MHz


Bng 3 - S knh CDMA v tn s tng ng di tn 450 MHz


My di ng N = 1 n 300 0,025 (N - 1) + 450,000

Trm gc N = 1 n 300 0,025 (N - 1) + 460,000

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2.1.2. c tnh phn thu

2.1.2.1. nhy phn thu

a) nh ngha

nhy phn thu ca my thu trm gc l cng sut nh nht thu c ti cng vo RF ca my thu trm gc, sao cho vi cng sut t l li khung (FER) ca knh lu lng ng ln duy tr mc 1%.

b) Phng php o

1. t trm gc cn o v my di ng m phng nh trong Hnh 2.

2. i vi mi di tn m trm gc c th s dng, cu hnh trm gc hot ng di tn v tin hnh o kim t bc 3 n bc 8.

3. Tt b to AWGN (t cng sut ra bng 0).

4. Nu trm gc h tr gii iu ch trong cu hnh v tuyn 1, 2, 3 hoc 4, thit lp cuc gi s dng trong php o knh lu lng c s ch 1 hoc 3 hoc php o knh iu khin dng ring ch 3 v thc hin cc bc 6 n 8.

5. Nu trm gc h tr gii iu ch trong cu hnh v tuyn 5 hoc 6, thit lp cuc gi s dng trong php o knh lu lng c s ch 7 hoc php o knh iu khin dng ring ch 7 v thc hin cc bc 6 n 8.

6. iu chnh thit b nhm m bo rng cng sut tn hiu RF ti u vo khng vt qu -117 dBm (i vi di tn s 800 MHz v 450 MHz) hoc khng qu -119 dBm (i vi di tn s 2 GHz). Tt ch iu khin cng sut vng kn knh lu lng ng ln trong my di ng m phng.

7. Pht d liu ngu nhin ti my di ng m phng vi tc cao nht.

8. o t l li khung nh m t 2.6.7.

c) Yu cu ti thiu

T l li khung phi nh hn hoc bng 1% vi tin cy 95%.

2.1.2.2. Di ng ca my thu

a) nh ngha

Di ng ca my thu l khong cng sut u vo ti cc cng vo RF ca trm gc, sao cho trong khong t l li khung khng vt qu gi tr cho php. Gii hn thp l nhy thu o nh 2.1.2.1. Gii hn trn l cng sut tng cng ti a cho mi cng u vo RF sao cho t l li khung duy tr mc 1%.

b) Phng php o


2. Nu trm gc h tr gii iu ch trong cu hnh v tuyn 1 hoc 2, thit lp cuc gi s dng trong php o knh c s ch 1 v thc hin cc bc 5 n 7.

3. Nu trm gc h tr gii iu ch trong cu hnh v tuyn 3 hoc 4, thit lp cuc gi s dng trong php o knh c s ch 3 hoc php o knh iu khin dng ring ch 3 v thc hin cc bc 5 n 7.


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5. iu chnh thit b mt cng sut ph tp m ti mi cng RF vo khng nh hn -65 dBm/1,23 MHz v cng sut tn hiu tng ng vi Eb/N0 l 10 dB 1 dB. Tt ch iu khin cng sut vng kn knh lu lng ng ln trong my m phng my di ng.


7. o t l li khung nh trong 2.6.7.

c) Yu cu ti thiu

T l li khung phi nh hn hoc bng 1% vi tin cy 95%.

2.1.2.3. suy gim nhy i vi nhiu n m

a) nh ngha

suy gim nhy i vi nhiu n m l s o kh nng thu tn hiu CDMA ti mt knh tn s khi c mt nhiu n m lch so vi tn s trung tm ca knh mt khong no .

Php o ny s dng cho tt c cc di tn s tr di tn 2 GHz v di ny cc nhiu bng hp hin xc nh.

b) Phng php o


2. i vi mi di tn lm vic ca trm gc (tr di tn 2 GHz), cu hnh trm gc di tn v thc hin cc php o t 3 n 12.

3. iu chnh thit b nhm m bo suy hao ng truyn t nht l 100 dB. Tt c phng thc iu khin cng sut phi c kch hot v t gi tr danh nh.




7. Pht d liu ngu nhin ti my m phng my di ng vi tc cao nht.

8. o cng sut u ra ca my di ng m phng.

9. Nu trm gc hot ng di tn 800 MHz, thc hin cc php o 11 v 12 vi b to CW c lch +750 kHz, -750 kHz, +900 kHz, v -900 kHz so vi tn s CDMA c n nh.

10. Nu trm gc hot ng di tn 450 MHz, thc hin cc php o 11 v 12 vi b to CW c lch +900 kHz, v -900 kHz so vi tn s CDMA c n nh.

11. Khi lnh l 750 kHz, iu chnh cng sut ca b to CW mc cao hn 50 dB so vi cng sut ra ca my di ng m phng ti cng vo RF o bc 8.

Khi lnh l 900 kHz, iu chnh cng sut ca b to CW mc cao hn 87 dB so vi cng sut ra ca my m phng my di ng ti cng vo RF o bc 8.

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12. o cng sut u ra ca my di ng m phng v t l li khung phn thu ca trm gc.

c) Yu cu ti thiu

Cng sut u ra ca my di ng m phng phi tng ln khng qu 3 dB v t l li khung phi nh hn 1,5% vi tin cy 95%.

Trong trng hp knh CDMA ng ln ln cn c trm gc h tr, cc tn s ca b to dao ng CW xut hin gia cc tn s trung tm ca sng mang ln cn th khng phi o.

2.1.2.4. Suy hao i vi xuyn iu ch gi

a) nh ngha

Suy hao i vi xuyn iu ch gi l s o kh nng thu tn hiu CDMA ti knh tn s n nh khi c mt hai tn hiu nhiu CW. Cc tn hiu nhiu ny ring r vi knh tn s n nh v ring r vi nhau sao cho t hp bc 3 ca hai tn hiu ny, c th sinh ra do cc phn t phi tuyn ca my thu, to ra tn hiu nhiu trong bng tn ca tn hiu CDMA mong mun.

b) Phng php o


2. i vi mi di tn lm vic ca trm gc, cu hnh trm gc hot ng di tn v thc hin cc bc t 3 n 11.

3. iu chnh thit b nhm m bo suy hao ng truyn t nht l 100 dB. Tt c phng thc iu khin cng sut phi c kch hot v t cc gi tr danh nh.

4. Nu trm gc h tr gii iu ch trong cu hnh v tuyn 1, 2, 3, hoc 4, thit lp cuc gi s dng trong php o knh c s ch 1 hoc 3 hoc php o knh iu khin dng ring ch 3 v thc hin cc bc 6 n 11.



7. o cng sut u ra ca my di ng m phng.

8. Nu trm gc hot ng di tn 800 MHz hoc 450 MHz thc hin cc bc o 10 v 11 vi b to CW c lch +900 kHz v +1700 kHz, -900 kHz v -1700 kHz so vi tn s CDMA c n nh.

9. Nu trm gc hot ng di tn 2 GHz th thc hin cc bc o 10 v 11 vi b to CW c lch +1,25 MHz v + 2,05 MHz, -1,25 MHz v -2,05 MHz so vi tn s CDMA c n nh.

10. i vi di tn lm vic 800 MHz v 450 MHz iu chnh cng sut ca b to CW mc cao hn 72 dB, i vi di tn lm vic l 2 GHz iu chnh cng sut ca b to CW mc cao hn 70 dB so vi cng sut u ra ca my di ng m phng ti cng vo RF o bc 7.

11. o cng sut u ra ca my m phng my di ng v t l li khung phn thu ca trm gc.

c) Yu cu ti thiu

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2.1.2.5. chn lc knh ln cn

a) nh ngha

chn lc knh ln cn l s o kh nng thu tn hiu CDMA ti mt knh tn s n nh khi c mt tn hiu CDMA khc lch so vi tn s n nh mt khong bng 2,5 MHz.

b) Phng php o


2. iu chnh thit b nhm m bo suy hao ng truyn t nht phi bng 100 dB. Tt c phng thc iu khin cng sut phi c kch hot v t gi tr danh nh.



5. Nu trm gc h tr gii iu ch trong cu hnh v tuyn 5 hoc 6, thit lp cuc gi s dng trong php o knh c s ch 7 hoc php o knh iu khin dng ring ch 7 v thc hin cc bc 6 n 9

6. Pht d liu ngu nhin ti my m phng my di ng vi tc cao nht.

7. o cng sut u ra ca my m phng my di ng.

8. t my di ng m phng th 2 (my di ng gy nhiu) hot ng lch +2,5 MHz v -2,5 MHz so vi tn s CDMA c n nh vi mc cng sut ra -53 dBm. My di ng m phng phi l mt my di ng pht tn hiu RC3 tc cao nht.

9. o cng sut u ra ca my di ng m phng v t l li khung phn thu ca trm gc.

c) Yu cu ti thiu


2.1.3. Gii hn v pht x

2.1.3.1. Pht x gi dn

a) nh ngha

Pht x gi dn l cc pht x gi c to ra hoc c khuch i trong cc thit b ca trm gc v xut hin ti u vo RF ca my thu.

b) Phng php o

1. Ni my phn tch ph (hoc cc thit b o ph hp khc) vi u vo RF ca my thu.

2. i vi mi di tn lm vic ca trm gc, cu hnh trm gc hot ng di tn v tin hnh cc bc o t 3 n 5.

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3. Tt tt c cc u ra RF ca my pht.

4. Thc hin bc 5 cho tt c cc u vo ca my thu.

5. Qut phn tch ph trong ton b di tn t tn s trung tn thp nht hoc t tn s dao ng ni thp nht ca my thu hoc t 1 MHz, ty theo gi tr no nh hn, n t nht tn s 2600 MHz i vi di tn 450 MHz v 800 MHz, hoc n tn s 6 GHz i vi di tn 2 GHz, ri tin hnh o cc mc pht x gi.

c) Yu cu ti thiu

Pht x gi dn phi p ng c:

1. Nh hn -80 dBm, o trong bt k 30 kHz no ca bng tn thu ti u thu RF ca trm gc.

2. Nh hn -60 dBm, o trong bt k 30 kHz no ca bng tn pht ti u thu RF ca trm gc.

3. Nh hn -47 dBm, o trong bt k 30 kHz no ca cc on bng tn cn li ti u thu RF ca trm gc.

2.1.3.2. Pht x gi bc x

Khng c yu cu ring i pht x gi bc x ca my thu CDMA. Ni chung, pht x gi bc x ca phn thu c c o kim cng vi pht x gi bc x ca phn pht.

2.2. Yu cu i vi phn pht CDMA

Tr khi c quy nh khc, tt c cc php o trong phn ny phi c thc hin vi ng ten c b kt ni n.

2.2.1. Cc yu cu v tn s

2.2.1.1. Phm vi tn s

Tn s v phn knh tn s cho trm gc v my di ng CDMA c ch ra 2.1.1. Tn s n nh cho my thu ti trm gc CDMA kt hp tng ng vi tn s n nh cho my pht CDMA. Mi tn s n nh c hiu l tn s trung tm ca knh tn. Ch rng my pht trm gc c th c n nh mt knh tn ring c nh hoc c th c n nh mt nhm knh tn.

2.2.1.2. Dung sai tn s

a) nh ngha

Dung sai tn s l lch cc i cho php gia tn s sng mang CDMA thc t v tn s sng mang CDMA c n nh. Php o dung sai tn s phi thc hin trn tt c cc bng tn pht ca trm gc CDMA.

b) Phng php o

Khi o dung sai tn s phi s dng thit b o thch hp, chnh xc ca thit b o phi tun th yu cu ti thiu. Php o tn s l mt phn ca php o cht lng dng sng.

c) Yu cu ti thiu

Ti tt c cc iu kin v nhit khai thc do nh sn xut ch nh, s sai khc trung bnh gia tn s sng mang thc t v tn s sng mang c n nh phi nh hn 510-8 ca tn s n nh (0,05 ppm).

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2.2.2. Cc yu cu v iu ch

2.2.2.1. Cht lng dng sng

a) nh ngha

Cht lng dng sng c o bng vic xc nh cng sut tng quan ph hp gia dng sng thc t v dng sng l tng.

b) Phng php o

Hnh 5 l s chc nng khi thit lp o kim.

1. Ni cng ra RF ca trm gc bao gm c knh hoa tiu ng xung vi thit b o kim c m t ti 2.6.4.2.a).

2. Ti mi bng tn hot ng ca trm gc, cho trm gc hot ng ti bng tn v thc hin cc bc t 5 n 6.

3. Cu hnh trm gc ch pht knh hoa tiu ng xung v thc hin cc bc 5 n 6.

4. Nu trm gc s dng k thut pht phn tp, ni cng ra RF ca trm gc bao gm c knh hoa tiu phn tp pht vi thit b o kim c m t ti 2.6.4.2.a). Cu hnh sao cho trm gc ch pht knh hoa tiu phn tp pht v thc hin cc bc 5 n 6.

5. Khi ng thit b o kim vi tn hiu chun thi gian ca h thng ly t trm gc.

6. o h s cht lng dng sng.

c) Yu cu ti thiu

H s tng quan cho thng thng, r, phi ln hn 0,912 (cng sut khng tng qu 0,4 dB).

2.2.3. Cc yu cu v cng sut ra cao tn

2.2.3.1. Cng sut tng cng

a) nh ngha

Cng sut tng cng l cng sut trung bnh a ti ti c in tr tng ng vi tr khng ti danh nh ca phn pht.

b) Phng php o

1. Ni thit b o cng sut vi cng u ra RF ca trm gc.

2. Ti mi bng tn hot ng ca trm gc, cho trm gc hot ng ti bng tn v thc hin cc bc t 3 v 4.

3. t trm gc pht tn hiu c iu ch cng vi t hp ca knh hoa tiu, knh ng b, knh nhn tin v knh lu lng nh trong 2.6.5.2.

4. o cng sut trung bnh ti u ra RF.

c) Yu cu ti thiu

Cng sut tng cng phi nm trong khong +2 dB v -4 dB mc cng sut biu kin ca nh sn xut qui nh cho thit b trong cc iu kin mi trng nh m t 2.3.

2.2.3.2. Cng sut knh hoa tiu

a) nh ngha

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T l gia cng sut knh hoa tiu so vi cng sut tng cng l phn cng sut trn knh hoa tiu chia cho cng sut tng cng, c th hin bng dB. My phn tch cng sut theo m c s dng xc nh t l cng sut knh hoa tiu vi cng sut tng cng. Thit b ny c qui nh trong 2.6.4.2.b).

b) Phng php o

1. Ni cng u ra RF ca trm gc vi my phn tch cng sut theo m c s dng b suy hao hoc b ghp ni nh hng nu cn thit.

2. Ti mi bng tn hot ng ca trm gc, cho trm gc hot ng ti bng tn v thc hin cc bc t 3 v 4.

3. Cu hnh trm gc pht tn hiu c iu ch cng vi t hp ca knh hoa tiu, knh ng b, knh nhn tin v knh lu lng nh trong 2.6.5.2.

4. o t l cng sut knh hoa tiu vi cng sut tng cng.

c) Yu cu ti thiu

T l cng sut knh hoa tiu vi cng sut tng cng phi nm trong khong 0,5 dB gi tr ci t.

2.2.3.3. Cng sut knh m

a) nh ngha

Cng sut knh m l cng sut tng knh m ca knh CDMA. nh thi CDMA c s dng trong php o cng sut knh m c ly t knh hoa tiu v c s dng nh l nh thi cho vic gii iu ch ca tt c cc knh m khc. Php o ny xc nh tnh trc giao c duy tr gia cc knh m. Khi chc nng pht phn tp c kch hot, php o ny cng xc nh tnh ng b v thi gian c duy tr.

b) Phng php o

1. Thit lp trm gc hot ng trong bng tn nh Hnh 6 v 7.

2. i vi mi bng tn lm vic ca trm gc, cu hnh trm gc hot ng di tn v thc hin cc bc t 3 n 8.

3. Nu trm gc h tr gii iu ch ca cu hnh v tuyn 1 hoc 2, thit lp cuc gi php o knh c s ch 1 v thc hin bc 6 n 8.

4. Nu trm gc h tr gii iu ch ca cu hnh v tuyn 3 hoc 4, thit lp cuc gi php o knh c s ch 3 hoc php o knh iu khin dng ring ch 3 v thc hin bc 6 n 8.

5. Nu trm gc h tr gii iu ch ca cu hnh v tuyn 5 hoc 6, thit lp cuc gi php o knh c s ch 7 hoc php o knh iu khin dng ring ch 7 v thc hin bc 6 n 8.

6. t trm gc pht mc cng sut ti a ca nh sn xut.

7. o cng sut trm gc ti cng u ra RF bng my phn tch cng sut theo m miu t trong 2.6.4.2.b) trong iu kin tt ch pht phn tp.

8. Nu trm gc h tr pht phn tp cho cu hnh v tuyn cn o, o cng sut trm gc ti cng u ra RF bng my phn tch cng sut theo m m t trong 2.6.4.2.b) trong iu kin bt ch pht phn tp.

9. S dng 2 on cp c tr bng nhau ni 2 cng ng ten vi b cng nh trong Hnh 7.

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c) Yu cu ti thiu

Khi hot ng php o knh c s ch 1, cng sut knh m trong mi knh Wn64 khng hot ng phi nh hn hoc bng 27 dB so vi cng sut ra tng cng.

Khi hot ng php o knh c s ch 3 hoc php o knh iu khin dng ring ch 3, cng sut knh m trong mi knh Wn128 khng hot ng phi nh hn hoc bng 30 dB so vi cng sut ra tng cng.

Khi hot ng php o knh c s ch 7 hoc php o knh iu khin dng ring ch 7, cng sut knh m trong mi knh Wn256 khng hot ng phi nh hn hoc bng 33 dB so vi cng sut ra tng cng.

2.2.4. Cc gii hn cc pht x

2.2.4.1. Cc pht x gi dn

a) nh ngha

Cc pht x gi dn l cc pht x ti cc tn s nm ngoi knh CDMA c n nh, chng c o ti cng RF ca trm gc.

b) Phng php o

1. Ni mt my phn tch ph (hoc mt thit b o kim ph hp) vi cng u ra RF ca trm gc, trng hp cn thit c th s dng mt b suy hao hoc mt b ghp ni nh hng.

2. Thit lp trm gc hot ng ti bng tn cn o v thc hin cc bc t 3 n 11.

3. Cho trm gc pht mt sng mang n v thc hin cc bc t 4 n 6.

4. Cho trm gc pht mt tn hiu c iu ch vi mt t hp cc knh lu lng, knh nhn tin, knh ng b v knh hoa tiu. Cng sut tng ti cng u ra RF phi l cng sut cc i c nh sn xut ch ra.

5. o mc cng sut ca tn s sng mang.

6. o cc mc pht x gi.

7. Nu trm gc pht hai sng mang trn cng mt cng u ra RF n vi khong cch sng mang l 1,23 MHz (vi di tn 800 MHz) hoc 1,25 MHz (vi tt c cc di tn khc), cho trm gc pht hai sng mang lin k v thc hin cc bc 10 v 11.

8. Nu trm gc pht hai sng mang trn cng mt cng u ra RF n vi khong cch sng mang ln hn 1,23 MHz (vi di tn 800 MHz) hoc 1,25 MHz (vi tt c cc di tn khc), cho trm gc pht hai sng mang khng lin k v thc hin cc bc 10 v 11.

9. Nu trm gc pht ba sng mang hoc nhiu hn trn cng mt cng u ra RF n, cho trm gc pht tt c cc sng mang vi khong cch sng mang nh nht c ch ra bi nh sn xut v thc hin cc bc 10 v 11.

10. Cho trm gc pht a tn hiu c iu ch vi mt t hp cc knh lu lng, knh nhn tin, knh ng b v knh hoa tiu. Cng sut tng ti cng u ra RF phi l cng sut cc i c nh sn xut ch ra cho cu hnh a sng mang trong php o kim.

11. o cc mc pht x gi.

c) Yu cu ti thiu

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Cc pht x gi phi nh hn tt c cc gii hn c ch ra trong bng di y:

Bng 4 - Gii hn pht x gi ca my pht trong cc di tn 800 v 450 MHz

Phm vi |f| p dng cho

a sng mang Gii hn pht x

750 kHz n 1,98 MHz Khng -45 dBc / 30 kHz

1,98 MHz n 4,00 MHz Khng

-60 dBc / 30 kHz; Pra 33 dBm

-27 dBm / 30 kHz; 28 dBm Pra < 33 dBm

-55 dBc / 30 kHz; Pra < 28 dBm

> 4,00 MHz (ITU loi A) C

-13 dBm / 1 kHz; 9 kHz < f < 150 kHz

-13 dBm / 10 kHz; 150 kHz < f < 30 MHz

-13 dBm / 100 kHz; 30 MHz < f < 1 GHz

-13 dBm / 1 MHz; 1 GHz < f < 5 GHz

> 4,00 MHz (ITU loi B) C

-36 dBm / 1 kHz; 9 kHz < f < 150 kHz

-36 dBm / 10 kHz; 150 kHz < f < 30 MHz

-36 dBm / 100 kHz; 30 MHz < f < 1 GHz

-30 dBm / 1 MHz; 1 GHz < f < 12,5 GHz CH THCH: Mi tn s trong rng bng tn o phi tun theo cc gii hn |f| trong f = tn s trung tm - tn s gn vi tn s bin o hn (f). Vic tun th gii hn -35 dBm/6,25 kHz c da trn vic s dng thit b o, thit lp bng thng phn gii c iu chnh ch ra ph cng sut trong on 6,25 kHz. i vi o kim a sng mang, f c nh ngha l dng khi f = tn s trung tm ca sng mang c tn s cao nht - tn s gn vi tn s bin o hn (f) v f c nh ngha l m khi f = tn s trung tm ca sng mang c tn s thp nht - tn s gn vi bin o hn (f).

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Bng 5 - Gii hn pht x gi ca my pht trong cc di tn 2 GHz

Phm vi |f| p dng cho

a sng mang Gii hn pht x

885 kHz n 1,25 MHz Khng -45 dBc / 30 kHz

1,25 n 1,98 MHz Khng Cht ch hn mc di y

-45 dBc / 30 kHz hoc -9 dBm / 30 kHz

1,25 n 2,25 MHz C -9 dBm / 30 kHz

1,25 n 1,45 MHz

(Di 2 GHz) C -13 dBm / 30 kHz

1,45 n 2,25 MHz

(Di 2 GHz) C -[13 + 17(f 1,45 MHz)] dBm / 30 kHz

1,98 n 2,25 MHz Khng


-22 dBm / 30 kHz; 28 dBm Pra 33 dBm


2,25 n 4,00 MHz C -13 dBm / 1 MHz

> 4,00 MHz (ITU loi A) C

-13 dBm / 1 kHz; 9 kHz < f < 150 kHz

-13 dBm / 10 kHz; 150 kHz < f < 30 MHz

-13 dBm / 100 kHz; 30 MHz < f < 1 GHz

-13 dBm / 1 MHz; 1 GHz < f < 5 GHz

> 4,00 MHz (ITU loi B) C

-36 dBm / 1 kHz; 9 kHz < f < 150 kHz

-36 dBm / 10 kHz; 150 kHz < f < 30 MHz

-36 dBm / 100 kHz; 30 MHz < f < 1 GHz

-30 dBm / 1 MHz; 1 GHz < f < 12,5 GHz CH THCH: Mi tn s trong rng bng tn o phi tun theo cc gii hn |f| trong f = tn s trung tm - tn s gn vi tn s bin o hn (f). Yu cu -9 dBm da trn CFR 47 phn 24 vi ch tiu -13 dBm/12,5 kHz. i vi o kim a sng mang, f c nh ngha l dng khi f = tn s trung tm ca sng mang c tn s cao nht - tn s gn vi tn s bin o hn (f) v f c nh ngha l m khi f = tn s trung tm ca sng mang c tn s thp nht - tn s gn vi bin o hn (f).

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Bng 6 - Cc gii hn b sung i vi cc pht x

Tn s o

(MHz)

p dng cho a sng mang

Gii hn pht x Khi vng ph

sng c chng ln vi

1893,5 - 1919,6 Khng -41 dBm / 300 kHz PHS

876 - 915 Khng -98 dBm / 100 kHz (cng v tr) GSM 900

921 - 960 C -57 dBm / 100 kHz GSM 900

1710 - 1785 Khng -41 dBm / 300 kHz (cng v tr) DCS 1800

1805 - 1880 C -47 dBm / 100 kHz DCS 1800

1900 - 1920 v 2010 - 2025 Khng

-86 dBm / 1 MHz (cng v tr) UTRA-TDD

1900 - 1920 v 2010 - 2025 C -52 dBm / 1 MHz UTRA-TDD

1920 - 1980 Khng -86 dBm / 1 MHz (cng v tr) Lun lun

2.2.4.2. Cc pht x gi bc x

Mc cng sut pht x gi bc x ti a cho php c quy nh trong bng sau:

Bng 7 - Gi tr suy hao v mc cng sut trung bnh tuyt i dng tnh mc cng sut pht x gi cc i cho php

Bng tn s (tnh tn s hn di, khng tnh tn s hn trn)

i vi mi thnh phn pht x gi, mc suy hao (gia cng sut trung bnh trong rng bng tn cn thit so vi cng sut trung bnh ca thnh phn pht x gi) phi c gi tr t nht bng vi gi tr di dy v mc cng sut trung bnh tuyt i khng vt qu gi tr di y

235 MHz ti 960 MHz

Cng sut trung bnh trn 25W

Cng sut trung bnh 25 W hoc nh hn

60 dB

20 mW

40 dB

25 W

960 MHz ti 17,7 GHz

Cng sut trung bnh trn 10 W

Cng sut trung bnh 10 W hoc nh hn

50 dB

100 mW

100 W

2.2.4.3. Xuyn iu ch trong my pht ti trm gc

a) nh ngha

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Xuyn iu ch trong my pht ti trm gc xy ra khi c mt ngun tn hiu ngoi ti u ni ng ten ca trm gc. Php o ny xc nhn ch tiu pht x gi dn vn c tun th khi c mt ca ngun gy nhiu.

b) Phng php o

1. Ni mt my phn tch ph (hoc mt thit b o kim ph hp) v mt trm gc khc vi cng u ra RF ca trm gc, trng hp cn thit c th s dng cc b suy hao hoc cc b ghp ni nh hng nh Hnh 8.

2. Ti mi bng tn hot ng ca trm gc, cho trm gc hot ng ti bng tn v thc hin t bc 3 n bc 6.

3. t trm gc cn o kim pht mt tn hiu c iu ch cng vi mt s kt hp cc knh lu lng, knh nhn tin, knh ng b v knh hoa tiu. Cng sut tng ti cng u ra RF phi l cng sut cc i c nh sn xut ch ra.

4. t trm gc th hai pht mt tn hiu c iu ch cng vi s kt hp cc knh lu lng, knh nhn tin, knh ng b v knh hoa tiu c cng sut tng nh hn 30 dB cng sut ca trm gc khc vi mt lch tn l 1,25 MHz gia trung tm ca cc tn s trung tm CDMA.

5. o mc cng sut ti tn s sng mang.

6. o mc pht x gi ti nh ca ngun tn hiu pht ca trm gc v ngun gy nhiu. Tn s trung tm ca nh c xc nh bng hai ln tn s trung tm ca trm gc cn o kim tr i tn s trung tm ca trm gc th hai. rng bng thng ca nh bng vi rng bng thng ca cu hnh v tuyn b nh hng.

c) Yu cu ti thiu

Trm gc phi p ng c cc yu cu pht x gi dn trong 2.2.4.1.

2.2.4.4. Bng tn chim dng

Php o th ny ch dng cho di tn 2 GHz.

a) nh ngha

S chim dng bng tn c nh ngha l khong tn s m ngoi khong tn s (ngoi cc gii hn trn v di) th cng sut pht x trung bnh l 0,5% tng cng sut ca mt sng mang iu ch bc x ra.

b) Phng php o

1. Ni my phn tch ph (hoc thit b o ph hp khc) vi u ra cao tn RF ca trm gc c s dng b suy hao.

2. Thit lp trm gc pht mt tn hiu iu ch bi t hp cc tn hiu cc knh hoa tiu, ng b, nhn tin v lu lng. Tng cng sut ti u ra RF phi bng cng sut danh nh do nh sn xut a ra.

3. t bng tn phn tch ca my phn tch ph l 30 kHz. chim dng bng tn c tnh ton nh mt my tnh bn trong hoc bn ngoi bng cch tng tt c cc mu lu di dng "cng sut tng".

c) Yu cu ti thiu

Bng tn chim dng khng vt qu 1,48 MHz.

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2.3. Cc quy nh chung cho CDMA

2.3.1. in th ngun v nhit

a) nh ngha

Khong nhit v in th c ngha l khong nhit mi trng v in th ngun m trm gc s lm vic v p ng cc yu cu ca Quy chun ny. Nhit mi trng l nhit trung bnh ca khng kh xung quanh thit b trm gc. in th ngun l in th c cp ti u vo ca thit b trm gc. Nh sn xut phi nh r khong nhit v in th ngun lm vic ca thit b.

b) Phng php o

Thit b trm gc phi c lp t theo cu hnh bnh thng (c ngha l c lp hoc g vi y ph kin) v t trong phng nhit . Tt nht, thit b c cha cc phn t quyt nh tn s c t trong phng nhit nu cn phi gi n nh v tn s trong iu kin nhit khc nhit quy nh ca ton b thit b trm gc.

Phng nhit phi c n nh ti nhit hot ng cao nht theo quy nh ca nh sn xut v sau phi hot ng ph hp vi cc iu kin th nghim chu k lm vic chun quy nh trong phn 6 v vi di in p ngun do nh sn xut quy nh. Khi cc thit b trm gc vn hnh, nhit phi c duy tr nhit th quy nh, khng cho php lung kh lu ng trong phng nh hng trc tip ti cc thit b trm gc.

Trong ton b chu k lm vic, chnh xc tn s ca my pht, chun nh thi, cng sut ra v cht lng dng sng c o nh quy nh trong 2.2.

Tt thit b trm gc, n nh thit b trong phng nhit phng v lp li cc bc o trn sau thi gian 15 pht lm m ch ch.

Tt thit b trm gc, n nh thit b trong phng nhit thp nht do nh sn xut quy nh, lp li cc bc o trn sau thi gian 15 pht lm m ch ch.

i vi cc bc o n nh tn s my pht, lp li qu trnh trn tng bc 100C k t nhit vn hnh do nh sn xut quy nh tr ln. Thit b phi c n nh ti mi bc trc khi thc hin php o tn s.

c) Yu cu ti thiu

Vi nhit bao quanh v di in p ngun cung cp do nh sn xut quy nh, hot ng ca thit b trm gc phi tun th cc gii hn nu trong Bng 7.

Bng 7 - Cc gii hn o th mi trng

Tham s Gii hn Tham chiu

Dung sai tn s 0,05 ppm 2.2.1.2

Yu cu nh thi 10 s

Cht lng dng sng hoa tiu > 0,912

Sai lch cng sut u ra RF +2 dB, -4 dB 2.2.3.1

2.3.2. m cao

a) nh ngha

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Thut ng m cao ch m tng i m ti trm gc s hot ng khng vt qu suy gim cht lng quy nh.

b) Phng php o

Thit b trm gc, sau khi vn hnh bnh thng di cc iu kin th tiu chun, phi c t, khng hot ng trong mt phng m vi m duy tr mc 0,024 gm H2O/gm kh kh ti 500C ( m tng i l 40%) trong thi gian t 8 h tr ln. Khi trong phng v ti cui khong thi gian ny, thit b trm gc phi c o kim v chnh xc tn s, chun nh thi, cng sut u ra, v cht lng dng sng. Trong qu trnh o th khng c php iu chnh li thit b trm gc.

c) Yu cu ti thiu

Trong cc iu kin v m nu trn, hot ng ca thit b trm gc phi ph hp vi cc yu cu k thut nu trong Bng 7.

2.3.3. Cc pht x dn ngun in xoay chiu

a) nh ngha

Cc th nghim pht x dn ngun in xoay chiu phi c thc hin vi tt c cc thit b trc tip u ni vi ngun in li. i vi thit b nhn in nng t thit b u ni trc tip vi ngun in li (nh b cp ngun in mt chiu), cc th nghim pht x dn phi c thc hin trn thit b cp ngun, vi cc thit b th nghim c u ni, chc chn rng ngun cung cp cng p ng c cc yu cu pht x hin thi. Khng yu cu cc th nghim pht x dn ngun in xoay chiu i thit b c cha ngun cung cp ni hoc b cp ngun c qui m khng u ni vi ngun in li.

b) Phng php o

Cc th tc o dn m t trong 2.2.4.1 phi c p dng o cc mc pht x gi dn.

c) Yu cu ti thiu

in p tn s v tuyn in, o theo mc b), khng c vt qu 1 mV i vi cc tn s trong khong 450 kHz - 1705 kHz v khng c vt qu 3 mV i vi cc tn s trong khong 1,705 MHz - 30 MHz.

2.4. Cc ch o kim

Knh lu lng ng xung v knh lu lng ng ln c xc nhn bng cch vin dn cc ch o knh c s, ch o knh iu khin chuyn dng v cc ch o knh m ph. Bng 8 lit k 9 ch o kim v cu hnh v tuyn tng ng.

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Bng 8 - Cu hnh cc ch o kim

Ch o Cu hnh v tuyn knh lu lng ng xung Cu hnh v tuyn knh

lu lng ng ln

1 1 1

2 2 2

3 3 3

4 4 3

5 5 4

6 6 5

7 7 5

8 8 6

9 9 6

o knh c s ch 1 l thit lp cuc gi s dng dch v ty chn hi tip (dch v ty chn 2 hoc 55) hoc dch v ty chn Markov (dch v ty chn 54). o knh m ph ch 1 bng cch thit lp cuc gi s dng dch v ty chn hi tip (dch v ty chn 30).

o knh c s ch 2 l thit lp cuc gi s dng dch v ty chn hi tip (dch v ty chn 9 hoc 55) hoc dch v ty chn Markov (dch v ty chn 54). o knh ho ph ch 2 bng cch thit lp cuc gi s dng dch v ty chn hi tip (dch v ty chn 31).

o knh c s ch 3 n 9 l thit lp cuc gi s dng dch v ty chn hi tip (dch v ty chn 55) hoc dch v ty chn Markov (dch v ty chn 54) hoc dch v ty chn kim tra d liu (dch v ty chn 32).

o knh iu khin chuyn dng ch 3 n 9 v o knh ph ch 3 n 9 bng cch thit lp cuc gi s dng dch v ty chn d liu kim tra (dch v ty chn 32).

2.5. Quy trnh chun o cc pht x

2.5.1. o cc pht x bc x

2.5.1.1. V tr th nghim bc x chun

V tr th nghim phi nm trn mt t bng c cc c tnh dn in ng nht. Ni ny phi m bo khng c ng dy in chy qua, cc vt kim loi khc v cng khng c cc tn hiu khng mong mun cng tt, v d tp m nh la v cc sng mang khc. Vt phn x nh mng nc ma v ng cp in phi nm ngoi mt hnh elip kch thc trc di l 60 m v kch thc trc ngn l 52 m i vi khong cch th 30 m hoc mt hnh elip c trc di 6 m v trc ngn 5,2 m i vi khong cch th 3 m. Thit b c th nghim phi nm ti mt tiu im ca elip v ng ten o nm trn tiu im kia. Nu mun c th dng lu ti ni th nghim nhm bo v ngi v thit b. Vt liu cho lu phi l g, nha hoc cht phi kim. Tt c cc ng dy in, in thoi v iu khin cho khu vc ny phi c chn su ti thiu 0,3 m di mt t.

Phi chun b mt bn quay, ngang vi mt t v c th iu khin t xa. Phi chun b mt bc cao 1,2 m trn bn quay ny gi thit b th nghim. Cp in

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v cp iu khin c dng cho thit b ny phi ko di xung bn quay v cp tha phi c cun li trn bn quay .

Nu thit b th nghim c lp trong gi hoc t v kh tho ra thc hin th nghim trn bn quay th nh sn xut c th quyt nh th thit b khi lp trong gi hoc t. Trong trng hp ny, gi hoc t c th c t trc tip ln bn quay.

Nu cn kim tra thit b pht c u ni ng ten ngoi th u ra RF ca my pht ny phi c ni vo ti khng bc x t trn bn quay. Ti khng bc x c dng thay cho ng ten trnh nhiu vi cc thit b v tuyn khc. Cp RF ca ti ny phi c di cng ngn cng tt. My pht phi c d v iu chnh ti gi tr u ra danh nh ca n trc khi bt u cc php th.

2.5.1.2. ng ten d

i vi cc ng ten d c th iu chnh lng cc bng hp, di lng cc phi c iu chnh theo tng tn s o. di ny c th c xc nh bng thc nh c thng i km vi thit b.

ng ten d phi c gn trn mt thanh ngang phi kim di ng c th nng ln h xung trn mt cc g hoc cc phi kim khc. Cp phi c ni vung gc vi ng ten. Cp phi c lp t nht l 3 m xuyn qua hoc dc theo thanh ngang theo hng ra xa thit b ang c o. Cp ng ten d sau c th c h xung t cui thanh ngang xung mt t ni vi thit b o cng trng.

ng ten d cn phi quay c mt gc 900 ti u mt ca thanh ngang cho php o c tn hiu phn cc ng v phn cc ngang. Khi chiu di ng ten c lp phn cc ng khng cho php thanh ngang h thp ti mc d ti thiu ca n, phi iu chnh cao ti thiu ca thanh ngang c khong cch 0,3 m gia u mt ca ng ten v mt t.

2.5.1.3. o cng trng

Thit b o cng trng phi c ni vo ng ten d. Thit b o cng trng phi c nhy v chn lc c th o cc tn hiu cc khong tn s cn thit c mc thp hn t nht 10 dB di mc c quy nh trong bt k ti liu, tiu chun, hoc thng s tham chiu quy trnh o ny. Vic nh gi cc thit b o (o cng trng, ng ten) s c kim tra thng xuyn m bo chnh xc ph hp vi cc tiu chun hin thi. Vic kim tra nh gi ny phi c tin hnh t nht mt nm mt ln.

2.5.1.4. Khong tn s o

Khi o cc tn hiu bc x t thit b pht, cc php o phi thc hin t tn s thp nht (nhng khng di 25 MHz) pht trong thit b ti hi th mi ca sng mang, tr khu vc gn vi sng mang bng 250% rng bng tn cho php.

Khi o cc tn hiu bc x t thit b thu, phi thc hin t tn s 25 MHz ti t nht l 6 GHz.

2.5.1.5. Khong cch th

a) Khong cch th 30 m

Thc hin o cc tn hiu bc x ti im cch tm ca bn quay 30 m. ng ten d s c nng ln h xung t 1 m ti 4 m vi c hng phn cc ngang v ng.

Thit b o cng trng s c t trn mt bn ph hp hoc gi ba chn ti chn ct ng ten.

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Khi o bc x t cc my thu, thit b c sn ng ten phi c kim tra cng vi ng ten. Thit b c ni vi ng ten thu ngoi thng qua cp phi c th khi khng c ng ten v cc cng thu trn thit b c th phi c ni vo ti thun tr khng bc x 50 .

b) Khong cch th 3 m

Vic o cc tn hiu bc x c th c thc hin ti im cch tm ca bn quay mt khong l 3 m v phi p ng c 3 iu kin sau:

1. Mn chn trn mt t che ph mt vng hnh elip c trc di t nht 6 m v trc ngn di 5,2 m c dng vi ng ten d v bn quay cm cch 3 m. ng ten o v bn quay phi nm trn trc di v phi cch u so vi trc ngn ca vng elip.

2. Kch thc ti a ca thit b phi t 3 m tr xung. Khi o cc tn hiu bc x t cc my thu, kch thc ti a bao gm c kch thc ca ng ten nu y l phn khng th tch ri ca thit b.

3. Thit b o cng trng hoc c lp t di mt t ti khu vc th nghim hoc t cch thit b ang c kim tra v ng ten d vi khong cch xa trnh lm sai lch d liu o c.

ng ten d phi c iu chnh ln, xung trong phm vi t 1 m ti 4 m theo c hng phn cc ng v ngang. Khi ng ten d c t thng ng th cao ti thiu ca im gia ca ng ten d phi bng chiu di ca na di ng ten.

Khi o pht x bc x t my thu, thit b c sn ng ten phi c kim tra cng vi ng ten. Thit b c ni ng ten thu ngoi thng qua cp phi c kim tra m khng cn ng ten v cc cng thu trn thit b c kim tra phi c ni vo ti thun tr khng bc x 50 . Khong cch th 3 m c th c dng xc nh mc thch hp vi cc gii hn quy nh ti khong cch 30 m (hoc cc khong cch khc) vi iu kin:

1. S bin thin phn x mt t gia hai khong cch ny c nh gi cc tn s quan tm ti khong cch o, hoc

2. H s hiu chnh 5 dB c cng vo gii hn pht x l thuyt tnh c cc phn x mt t trung bnh.

Cng trng bc x (V/m) thay i t l nghch vi khong cch cho nn kt qu php o thc hin vi khong cch th nghim 3 m chia cho 10 cho ta gi tr tng ng khi thc hin php o vi khong cch th nghim 30 m i vi cng EIRP (Cng sut bc x ng hng tng ng). Cng trng ti khong cch 30 m theo n v V/m c th c tnh t EIRP bng cng thc sau:

V/m ti 30 m = 5773,5 10EIRP(dBm)/20

2.5.1.6. Cc bc o tn hiu bc x

Cc tn hiu bc x mc cao phi c o trong phm vi 30 m hoc 3 m theo cc bc sau:

1. i vi mi tn hiu bc x quan st c, iu chnh ln xung ng ten d c c cc ch s ln nht trn ng h o cng trng vi ng ten phn cc ngang. Sau quay bn quay t c ch s ln nht. Lp li qu trnh iu chnh ln xung ng ten v quay bn quay cho ti khi nhn c tn hiu r nht. Ghi li ch s ln nht ny.

2. Lm li bc 1 i vi mi tn hiu bc x quan st c vi ng ten phn cc ng.

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3. Tho thit b ang c th v thay bng ng ten na bc sng. Tm ca ng ten na bc sng ny nn c t cng v tr vi tm ca thit b ang c kim tra.

4. Ni ng ten na bc sng vo mt my pht tn hiu qua cp khng bc x thay th cho thit b kim tra. Vi cc ng ten phn cc ngang ti hai u v vi my pht c iu chnh ph hp vi tn hiu bc x quan st c, iu chnh ln xung ng ten d c c ch s ln nht trn ng h o cng trng. iu chnh mc tn hiu u ra ca my pht cho ti khi c c ch s ln nht ghi la trc ti cc iu kin ny. Ghi li cng sut u ra ca my pht.

5. Lp li bc 4 trn vi c hai ng ten phn cc ng.

6. Tnh cng sut vo ng ten ng hng tham chiu chun bng cch:

a. Trc tin gim cc thng s o c trong cc bc 4 v 5 trn bng cch lp b suy hao vo cp ni gia my pht v ng ten, v

b. Tip n cng vi tng ch ca ng ten ngun ang dng bng vi ng ten ng hng chun. V vy ch s thu c l cng sut bc x ng hng tng ng (EIRP) i vi tn hiu gi ang c o.

7. Lp li t bc 1 ti bc 6 trn i vi tt c cc tn hiu thu c t thit b ang c kim tra.

2.5.2. o cc pht x dn ngun in AC

2.5.2.1. V tr th nghim tiu chun

a im th nghim phi nm trn mt t bng, b mt dn in c din tch t nht l 2 m2. Mt bng th nghim phi c rng ra t nht l 0,5 m tnh t chn ca thit b c th nghim.

Mt mt dn in thng ng khng bt buc i vi v tr th nghim chun (v tr m) v bt buc i vi cc php o t cc thit b trn bn o. Nu s dng mt dn thng ng, din tch ca mt phng ny t nht phi l 2 m2 v ghp dn in ti mt bng tip t ti a l 1 m dc theo ton b chiu di ca mt dn thng ng.

2.5.2.2. Khi mng n nh tr khng ng dy (LISN)

LISN c s dng cho thit b c th nghim trn v tr th nghim chun v ni trc tip vi dng in li, hoc thit b trc tip tiu th in li. LISN phi c t pha trn hoc ngay di mt bng tip t v c tnh dn in. Dng in ni gia ngun in v LISN c s dng gim mc tp m xung quanh ng in li.

2.5.2.3. Cc php o ti v tr th nghim chun

a) Thit b t ng trn sn

Thit b t ng trn sn phi c t trc tip trn mt phng t dn in. Nu dng mt mt phng dn in thng ng th thit b c th nghim phi t cch 40 cm. Tt c cc vt dn in khc (bao gm c LISN) phi c t cch xa ti thiu l 80 cm i vi bt k b mt no ca thit b c th nghim.

b) Thit b t trn bn

Thit b t trn bn phi c t trn mt b khng dn in, chiu di c kch thc khong 1,5 m, bn t thit b c t pha trn mt bng tip t khong cch l 80 cm. Thit b c th nghim phi t cch b mt dn ng l 40 cm,

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cn tt c cc vt dn in khc phi c t cch xa bt k b mt no ca thit b c th nghim t nht l 80 cm.

c) Th tc o

Mt my o tp m v tuyn in s dng b tch sng mc cn nh dng o tp m v tuyn in gia mi dy in v dy t. Mi dy in phi c o kim mt cch ring r vi tt c cc im ni khng dng ca LISN c kt cui bng ti thun tr 50 . Dy t (dy an ton) ca thit b c th nghim phi c ni vo ngun in thng qua LISN. Cc b ghp ni gia cm ngun LISN v thit b c th nghim di khng qu 20 cm.

Thit b c th nghim phi c o kim cc ch hot ng khc nhau vi cc ng cp nh hng. Mc cc pht x phi c ghi li i vi mi ch hot ng, cp nh hng lm tng ti a mc tp m v tuyn. K thut tng ti a tp m v tuyn phi c lp li i vi cc php o thc hin cc php o trn mi dy in.

d) Khong tn s o

Khi o cc pht x dn dng in xoay chiu, cc php o phi c thc hin trong khong tn s gia 450 kHz v 30 MHz.

2.5.2.4. Thc hin php o ti ni s dng thit b hoc xng ch to

i vi thit b khng th o kim c ti a im th nghim chun (v tr m), cc pht x dn dng in xoay chiu c th o ngay ti v tr s dng thit b hoc ti xng ch to.

2.6. Cc iu kin tiu chun cho th nghim

2.6.1. Thit b mu chun

2.6.1.1. Thit b c bn

Thit b phi c lp rp v bt c s iu chnh cn thit no phi c thc hin theo hng dn ca nh sn xut i vi ch hot ng yu cu. Khi c cc ch thay th, thit b phi c lp rp v iu chnh theo cc hng dn ph hp. Tp hp y cc php o phi c thc hin i vi tng ch hot ng.

2.6.1.2. Cc ph kin km theo

Trong qu trnh o kim, thit b trm gc c th bao gm c ph kin km theo nu cc ph kin ny thng c dng trong qu trnh hot ng ca thit b th. Cc ph kin km theo c th bao gm ngun cung cp, v my, cc b ghp ng ten, cc b ghp nhiu u ca my thu...

2.6.2. iu kin mi trng th nghim chun

Cc php o trong iu kin mi trng chun s phi c thc hin trong t hp ca cc iu kin sau:

- Nhit : +150C n +350C;

- m tng i: 45% n 75%;

- p sut khng kh: 860 mbar n 1060 mbar.

Nu mun, cc kt qu o c th c hiu chnh bng cch tnh ton v cc nhit i chiu chun 250C v p sut i chiu chun 1013 mbar.

2.6.3. iu kin chun v ngun s cp

2.6.3.1. Nhng iu kin chung

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Nhng in p chun s dng trong php th phi l nhng in p c cc nh sn xut ch r nh cc gi tr cc i, thng thng v cc tiu. in p khng c vt qu 2% so vi gi tr in p chun trong lot php o tin hnh trn cng thit b.

2.6.3.2. in p mt chiu chun c cp t c qui np

in p mt chiu chun (hay danh nh) do nh sn xut ch ra phi ngang bng vi in p chun ca b c qui c dng. in p ny c tnh bng cch nhn gi tr in p ca mt pin vi s lng pin ca b c qui tr i gi tr suy hao trung bnh trn cp ngun do nh sn xut xc nh nh l gi tr danh nh (hoc tng ng) trong iu kin lp t quy nh trc. Do c qui np c th hoc khng ch np in v thc t c th ang ch phng in khi thit b hot ng, nh sn xut phi thc hin php th thit b in p cao hoc thp nh trc so vi in p chun. in p th phi khng lch qu 2% so vi cc gi tr in p chun trong lot php th tin hnh trn cng mt thit b.

2.6.3.3. in p v tn s ca ngun xoay chiu chun

i vi cc thit b hot ng bng ngun xoay chiu, in p o th xoay chiu chun phi bng vi in p danh nh c nh sn xut ch ra. Nu thit b c cung cp bng nhiu ngun vo khc nhau, th phi s dng ngun danh nh c ch nh. Tn s o th chun v in p o th phi khng c lch khi gi tr danh nh qu 2%.

Thit b phi hot ng m khng suy gim cht lng vi in p vo bin ng ti 10%, v phi duy tr n nh tn s my pht khi in p vo bin ng ti 15%. Di tn s ca ngun m thit b hot ng phi c nh sn xut ch r.

2.6.4. Thit b kim tra chun

2.6.4.1. Thit b m phng knh

Thit b m phng knh phi h tr cc thng s knh nh sau:

Tt c cc ng truyn suy gim c lp vi nhau.

M hnh suy gim l Rayleigh. Hm phn b xc xut ca cng sut ca mc cng sut tn hiu P, F(P), l:

0P,0

0P,e1)P(F

aveP/P

Trong P l mc cng sut tn hiu v Pave l mc cng sut trung bnh.

T l xuyn mc L(P):

0P,0

0P,e.f.PP2)P(L

avePPdave

Trong fd l lch tn s Doppler do tc ca xe m phng v c tnh nh sau:

cd fcv

f

Trong fc l tn s sng mang, v l tc ca di chuyn ca xe v c l tc nh sng trong chn khng.

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Mt ph cng sut S(f):

ckhhpngtr,0

fffff,

f

ff1

1

)f(S

dcdc2

d

c

H s t tng quan ca s lin tc v pha i vi s khng gin on ca 2, (t) l:

1n2

n2d0

2

2

d01

d01

n

t.f2J

4

3t.f2Jsin

21

6t.f2Jsin23

)t(

Trong J0() l hm Bessel bc 0 ca th hng u tin.

H s t tng quan ny c ch ra trong Hnh 1. 1,2

1,0

0,8

0,6

0,4

0,2

0

-0,2

0,5 1 1,5 2,52 3

Tr t c n v l 1/tn s Doppler Hnh 1 - H s t tng quan ca pha

Cc iu kin chun v dung sai sau y ca cc thng s knh phi c thit b m phng knh h tr:

Tc ca xe v, nh ch ra trong Bng 9.

lch tn Doppler phi l 5%

Hm phn b cng sut F(P):

1. Dung sai phi nm trong phm vi 1 dB ca gi tr tnh ton, i vi cc mc cng sut t trn 10 dB n di 20 dB so vi mc cng sut trung bnh.

2. Dung sai phi nm trong phm vi 5 dB ca gi tr tnh ton, i vi cc mc cng sut t di 20 dB n di 30 dB so vi mc cng sut trung bnh.

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T l xuyn mc:

Dung sai phi nm trong phm vi 10 dB ca gi tr tnh ton, i vi cc mc cng sut t trn 3 dB n di 30 dB so vi mc cng sut trung bnh.

Mt ph cng sut o c, S(f), xung quanh sng mang fc:

1. Ti lch tn s |f - fc| = fd,, mt ph cng sut ti a S(f) phi ln hn S(fc) t nht l 6 dB.

2. i vi lch tn s |f - fc| > 2fd, mt ph cng sut ti a S(f) phi nh hn S(fc) t nht l 30 dB.

Tn s m phng Doppler, fd, phi c tnh ton t gi tr S(f) o c:

212

cd df)f(S

df)f(Sff2f

H s t tng quan ca s lin tc v pha i vi s khng gin on ca 2 o c, (t) l:

1. Ti tr 0,05/fd, (t) phi l 0,8 0,1.

2. Ti tr 0,15/fd, (t) phi l 0,5 0,1.

Thit b m phng knh phi h tr tt c cc cu hnh c ch ra trong Bng 9.

Bng 9 - Cu hnh ca thit b m phng knh

Cu hnh thit b m phng knh 1 2 3 4

Tc xe (km/h) 3 8 30 100

S ng truyn 1 2 1 3

Cng sut ng truyn 2 (dB)

(So snh vi ng truyn 1) N/A 0 N/A 0

Cng sut ng truyn 3 (dB)

(So snh vi ng truyn 1) N/A N/A N/A -3

Tr t ng truyn 1 ti u vo (s) 0 0 0 0

Tr t ng truyn 2 ti u vo (s) N/A 2,0 N/A 2,0

Tr t ng truyn 3 ti u vo (s) N/A N/A N/A 14,5

2.6.4.2. Thit b o cht lng ca dng sng

a) ng h o Rho

Thit b c kh nng thc hin o cc tham s lin quan n dng sng c s dng o lch tn s ng ln, lch thi gian ca hoa tiu v kh nng tng thch ca dng sng.

C th dng nhiu loi thit b khc nhau o. Thit b c s dng phi a ra kt qu tng ng vi kt qu ca php o bng thit b c s dng cc thut ton sau:

Tn hiu ca phn pht l tng c cho theo cng thc:

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tji

i

ce)t(R)t(s

Trong :

c l tn s gc danh nh ca sng mang ca tn hiu

Re(s) biu din phn thc ca s phc s

Ri(t) l ng bao phc ca knh m th i l tng, c tnh bi cng thc:

k kk.ick,icii sinkTtgjcoskTtga)t(R

Trong :

ai l bin ca knh m th i.

g(t) l p ng xung n v ca b lc pht v b cn bng pha ghp ni nhau c m t trong 3.1.3.1.14 ca 3GPP2 C.S0002-A-1.

i,k l pha ca chip th k i vi knh m th i ti thi im ri rc tk = k.Tc.

chnh xc iu ch l kh nng ca phn pht to ra tn hiu l tng s(t).

Tn hiu pht thc t c dng:

iic t)(jiiiii

e)t(EtRb)t(x

Trong :

bi l bin ca tn hiu pht thc t so vi tn hiu l tng ca knh m th i;

i l lch thi gian ca tn hiu pht thc t so vi thi gian ca tn hiu l tng ca knh m th i;

l lch tn s gc ca tn hiu;

i l lch pha ca tn hiu pht thc t so vi tn hiu l tng ca knh m th i, v

Ei(t) l ng bao phc ca li ca tn hiu pht thc t so vi tn hiu l tng ca knh m th i.

lch tn s gc c tnh = 2f v lch thi gian 0 ca pilot phi t c chnh xc nh ch ra Bng 10. Cc gi tr 0, v 0 c s dng tnh b x(t), bng cch a ra mt h s hiu chnh thi gian v h s nhn phc to ra y(t), mt kiu b ca x(t):

0c tj0 etx)t(y lch tn s gc c i ra lch tn f o bng Hz:

2

f

Tn hiu c b, y(t), s c a qua mt b lc b sung loi b nhiu gia cc k hiu (inter-symbol, ISI) to ra bi b lc pht v bi b cn bng pha tn hiu pht so vi tn hiu u ra b lc z(t). p ng xung tng th ca chui b lc c c t vic ghp tng b lc b sung vi b lc pht l tng v b cn bng phi

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gn tho mn cc tiu chun Nyquist i vi ISI mc 0. Cc tiu chun Nyquist phi ly xp x mc 0 ca b lc t nht thp hn 50 dB so vi phn hi tc thi ti cc thi im ly mu. Di tn tp m ca b lc b sung di thp s thp hn 625 kHz.

Tn hiu u ra l tng ha ca b lc b l:

)t(R~

)t(ri

i

Trong :

k,ik,iiki sinjcosa)t(R~ chnh xc iu ch c o bng cch xc nh phn cng sut ti u ra b lc

b sung, z(t), c lin quan n )t(R~

k0 , tn hiu hoa tiu c b. u ra b lc c ly mu ti nhng im quyt nh l tng khi my pht c iu ch ch bi knh hoa tiu (knh m th 0).

H s cht lng dng sng c xc nh:

M

1k

M

1k

2k

2

k,0

2M

1k

*k,0k

ZR~

RZ

y zk = z[k] l mu th k ca tn hiu u ra b lc b sung, v kRR k 0,0~~

l mu tng ng ca tn hiu ra l tng ca b lc b sung i vi knh hoa tiu.

chnh xc iu ch c o bng cch s dng cc mu gi tr phc k , z(tk) trong mt khong thi gian M, tnh bng chip, ca t nht mt nhm iu khin cng sut v mt b hon chnh 512 chip.

chnh xc ca thit b o cht lng dng sng c ch ra Bng 10.

Bng 10 - chnh xc ca thit b o cht lng dng sng

Thng s K hiu chnh xc yu cu

Cht lng dng sng 5.10-4 t 0,90 n 1,0

lch tn s (khng k nhng li v thi gian ca thit b o) f 10 Hz

lch ng b thi gian hoa tiu 0 135 ns

b) Thit b o min m

Xem nh ngha cc tham s ca tn hiu mc a). Thit b o min m nh gi cc i lng sau:

o H s cng sut min m Walsh 0, 1,... , L-1 (xem nh ngha di).

o lch thi gian min m Walsh so vi hoa tiu i, vi:

i = i - 0

o lch pha min m Walsh so vi hoa tiu i, vi:

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i = i - 0

o lch tn s:

f = fc - f0

Cng sut min m c nh ngha l phn cng sut trong z(tk) c lin quan n mi Ri(tk) khi my pht ang c iu ch theo mt dy k hiu m bit. Tn hiu thc t c b lch tn s gc , lch ng b vi hoa tiu 0 v pha ca hoa tiu 0.

Cc h s cng sut min m i c nh ngha nh sau:

N

1j

64

1k

2

k,j

64

1k

2

k,j,i

2N

1j

64

1k

*k,j,ik,j

i

ZR

RZ i = 0, 1, 2, ..., L - 1

Trong :

Zk c xc nh trong 2.6.4.2.a),

L l di hm Walsh cc i,

kR~R~ ik,j,i l mu th k ca tn hiu u ra l tng ca b lc b sung i vi knh m th i v N l qung thi gian o tnh theo n v di Walsh di nht, di ny ti thiu phi l mt nhm iu khin cng sut v mt b hon chnh 512 chip.

lch thi gian min m i v cc lch pha i phi c xc nh bng cch to ra tn hiu tham chiu:

iik tjiki

ik etRR

v tm cc gi tr c tnh ii a,, v i cc tiu ha tng li bnh phng:

2N

1kkk

2 RZ

Trong :

Zk = z(tk) l u ra ca b lc b sung ti thi im ly mu th k.

chnh xc ca thit b o min m c cho trong Bng 11 i vi kiu kim tra trm gc danh nh (xem 2.6.5.2).

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Bng 11 - chnh xc ca thit b o min m

Thng s K hiu

chnh xc yu cu

H s cng sut min m i 5.10-4 t 5.10-4n 1,0

lch tn s (khng k nhng li v thi gian ca thit b o)

f 10 Hz

lch v thi gian min m so vi hoa tiu i 10 ns

lch pha min m so vi hoa tiu i 0,01 radian

2.6.4.3. Thit b di ng m phng

Thit b di ng m phng phi ph hp vi 3GPP2 C.S0002-A-1 v C.S0011-A. Thit b di ng m phng phi h tr dch v ty chn 2, 9 v 55 ca 3GPP2 C.S0013-A v dch v ty chn 32 ca 3GPP2 C.S0026 v c th h tr dch v ty chn 54 ca 3GPP2 C.S0025.

C th ngt iu khin cng sut mch vng kn ng xung trong thit b di ng m phng. Vic ny bao gm cc lnh iu khin cng sut mch vng kn ng xung gi trn phn knh iu khin cng sut ng ln v trn knh iu khin cng sut chung. Khi ngt iu khin cng sut mch vng kn, c th t cng sut pht ca thit b di ng m phng bt k mc c nh no vi phn gii 0,1 dB trn ton di ng.

Thit b di ng m phng phi c mt chng trnh kim tra iu khin cng sut. Chc nng ca chng trnh ny l quay vng cng sut pht. S chuyn i cng sut ra phi tng ng vi nhng ng nhm iu khin cng sut nh nh ngha 6.1 ca 3GPP2 C.S0002-A-1. Thit b cn phi m bo tn hiu chun ng b tng ng vi s lun phin cng sut v c th phi m bo gi tr ca ca cc bit iu khin cng sut thu c trn ng ln. Khong thi gian t gia hai mc cng sut cao v thp t nht phi l 5 ms (4 nhm iu khin cng sut).

Khi o th cc cu hnh v tuyn t 3 n 6 (2.1.2 v 2.1.3), thit b di ng m phng phi s dng cc gi tr Bng li tng trng knh chung hng xung danh nh v Bng li tng trng danh nh ng xung, c ch ra tng ng trong 2.1.2.3.3.1 v 2.4.2.3.3.2 ca 3GPP2 C.S0002-A-1.

2.6.4.4. B to AWGN

B to AWGN phi p ng cc yu cu v tnh nng ti thiu nh sau:

Di thng ti thiu 1,8 MHz i vi tc tri ph 1.

Di tn s: 824 MHz n 894 MHz; 411 MHz n 484 MHz; 1920 n 1980 MHz.

phn gii tn s: 1 kHz.

chnh xc tn hiu u ra: 2 dB i vi nhng mc ra -80 dB.

n nh tn hiu u ra: 0,1 dB.

Di tn hiu u ra: -20 n -95 dBm.

ng u v h s khuch i: 1,0 dB trn di thng ti thiu.

Cc b to AWGN phi khng tng quan n nhau v n tn hiu pht l tng.

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2.6.4.5. B to CW

Di tn s u ra: c kh nng iu chnh trn ton di tn s s dng i vi lp di tn ang kim tra.

chnh xc tn s: 1ppm.

phn gii tn s: 100 Hz.

Di mc ra: -50 dBm n -10 dBm v tt.

chnh xc mc ra: 1,0 dB.

phn gii mc ra: 0,1 dB.

Tp m pha u ra ti mc cng sut -20 dBm:

-149 dBc/Hz ti tn s 1 GHz khi o lch 285 kHz (bng 400 v 800 MHz)

-144 dBc/Hz ti tn s 2 GHz khi o lch 655 kHz (bng 2 GHz).

2.6.4.6. My phn tch ph

My phn tch ph phi m bo nhng tnh nng sau:

o min tn s vi mc ch chung.

o cng sut knh tch hp (mt ph cng sut 1,23 MHz)

My phn tch ph phi p ng cc yu cu ti thiu sau:

Di tn s: C kh nng iu chnh trn ton di tn s s dng.

phn gii tn s 1 kHz.

chnh xc tn s: 0,2 ppm.

Di ng hin th: 70 dB

trung thc thang o logarit: 1 dB trn di ng hin th trn.

Phm vi o bin i vi nhng tn hiu t 10 MHz n 2,6 GHz i vi cc bng tn 800 MHz, 450 MHz, hoc 6 GHz i vi bng tn 2 GHz:

Cng sut o rng bng phn gii 30 kHz: -90 n +20 dBm

Cng sut knh tch hp 1,23 MHz: -70 n +47 dBm. CH THCH: Ti u ra RF tiu chun m t trong 2.6.4.8 c th c s dng p ng im cng sut cao ca cc php o ny.

chnh xc bin tuyt i cc di tn thu v pht CDMA i vi cc php o cng sut knh tch hp 1,23 MHz:

1 dB trn di -40 dBm n +20 dBm

1,3 dB trn di -70 dBm n +20 dBm.

bng phng tng i: 1,5 dB trn di tn s 10 MHz n hoc 2,6 GHz i vi cc bng tn 800 MHz, 450 MHz, hoc 6 GHz i vi bng tn 2 GHz.

B lc di thng phn gii: iu chnh ng b hoc Gaussian (ti thiu 3 cc) vi s la chn di thng mc 3 dB ca 1 MHz, 300 kHz, 100 kHz v 30 kHz.

B lc tn hiu video tch sng sau: c kh nng chn lc cc bc 10 Hz t 100 Hz n t nht 1 MHz.

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Cc phng thc tch sng: C th la chn tch sng theo nh hoc theo mu.

Tr khng u vo RF: danh nh l 50 .

2.6.4.7. ng h o cng sut trung bnh

ng h o cng sut phi m bo c cc tnh nng sau:

o cng sut trung bnh.

Tch sng RMS ng i vi c hai tn hiu hnh sin v khng hnh sin.

Cng sut tuyt i cc n v o tuyn tnh (watt) v logarit (dBm).

lch cng sut tng i o bng cc n v dB v %.

T ng nh gi v t ng v 0.

Ly gi tr trung bnh nhiu ln c.

ng h o cng sut phi p ng cc yu cu thc hin ti thiu nh sau:

Di tn o 10 MHz n hoc 1 GHz i vi cc bng tn 800 MHz, 450 MHz hoc n 2 GHz i vi bng tn 2 GHz.

Di cng sut o: -70 dBm (100 pW) n +47 dBm (50W).

C th yu cu cc b cm bin khc nhau m bo mt cch ti u di cng sut o. Ti RF u ra c m t trong 6.4.8 c th c s dng p ng im o cng sut cao ca cc php o ny.

chnh xc cng sut tuyt i v tng i: 0,2 dB (5%)

Khng k cc li ca b cm bin v bt i xng ngun (VSWR), li v 0 (li ny rt ng k ti im cn di ca gii hn cm bin) v li tuyn tnh ngun (li ny rt ng k ti im cn trn ca gii hn cm bin).

phn gii o cng sut: C th la chn gia 0,1 v 0,01 dB.

B cm bin VSWR: 1,15:1.

2.6.4.8. Ti RF u ra

u ra my pht trm gc phi c ni n thit b hoc thit b di ng m phng bng cc phng tin ph hp. Cc phng tin ny phi khng c kh nng bc x v suy hao lin tc cng sut ra ca my pht. B cm bin VSWR c my pht nhn bit trn di tn 1,23 MHz tp trung ti tn s pht danh nh khi o kim phi nh hn 1,1:1.

Tn hiu my pht trm gc c th c kt cui v ly mu trn ti gi, suy hao, b u ni hoc kt hp cc b phn trn.

2.6.5. Thit lp s chc nng o

2.6.5.1. S chc nng

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Trm gc

Suy hao

Ti

Tx

Rx (A)

Rx (B) Suy hao

ng h o cng

sut

Suy hao

Tx

B toAWGN

B toAWGN

Rx

Thit bm phng

my di ngng h o cng

sut

Hnh 2 - S php o nhy

Trm gc

Suy hao

Ti

Tx

Rx (A)

Rx (B) Suy hao

Suy hao

Tx

B toCW

Rx

Thit bm phng

my di ng

Suy hao

Suy hao

ng h o cng

sut

ng h o cng

sut

Hnh 3 - S php o suy gim nhy trm gc

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Trm gc

Suy hao

Ti

Tx

Rx (A)

Rx (B) Suy hao

Suy hao

Tx

B to CW

Rx

Thit bm phng

my di ng

Suy hao

Suy hao

B to CW

ng h o cng

sut

ng h o cng

sut

Hnh 4 - S php o p ng gi xuyn iu ch

Trm gc Ti

Tx

Rx (A)

Rx (B)

Suy hao

Thit bphn tch

dng sng

Hnh 5 - S php o cht lng dng sng

Trm gc Ti

Tx

Rx (A)

Rx (B)

Suy haoThit b

phn tchcng sut

theo min m

Hnh 6 - S php o cng sut theo m ch pht khng phn tp

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Trm gc Ti

Tx (A)

Rx (A)

Rx (B)

Suy haoThit b

phn tchcng sut

theo min m

Tx (B)

Hnh 7 - S php o cng sut theo m ch pht phn tp

Trm gc Ti

Tx

Rx (A)

Rx (B)

Suy hao

Myphn tch

phTrm gcngoi

Hnh 8 - S php o nhiu xuyn iu ch gia cc trm gc

Trm gc

ng ten

ng h o cng

sut

Ti

Tx

Rx (A)

Rx (B) ng ten

ng h o cng

sut

Tx

Thit b m phngmy di ng

(ngun nhiu)

Rx

Thit bm phng

my di ngng ten

ng ten

ng ten

Hnh 9 - S o chn lc knh ln cn ca trm gc

2.6.5.2. Cc cch o kim i vi trm gc

i vi cc php o thit b trm gc yu cu nhiu knh m ng thi ch lm vic, s dng cu hnh o kim c cho trong Bng 12. Bng 13 c s dng cho

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cc php o thit b trm gc pht phn tp yu cu nhiu knh m ng thi ch lm vic.

Nu s dng mt s knh lu lng khc nhau, s phn chia cng sut phi theo Bng 14, tr khi c quy nh khc.

Trong cc Bng 12, 13 v 14 h s cng sut cho knh lu lng phi bao gm c cc bit iu khin cng sut.

Bng 12 - Cc kiu o kim trm gc, dng i vi ng chnh

Loi knh S knh H s cng sut (ln) H s cng sut (dB) Ghi ch

Hoa tiu i 1 0,2000 -7,0 Knh m w0128

ng b 1 0,0471 -13,3 Knh m w3264; t l

1/8

Nhn tin 1 0,1882 -7,3 Knh m w164; ch i

vi tc cao nht

Lu lng 6 0,09412 -10,3

Nhng n nh knh m bin i c; ch i vi tc cao nht

Bng 13 - Cc kiu o kim trm gc, dng i vi ng phn tp pht

Loi knh S knh H s cng sut (ln)

H s cng sut

(dB) Ghi ch

Hoa tiu phn tp pht 1 0,2000 -7,0 Knh m w16

128

Thng tin 1 0,09412 -10,3

Nhng n nh knh m bin i c; ch i vi tc cao nht

Bng 14 - Cc kiu o kim trm gc, dng chung

Loi knh Cng sut tng ng

Hoa tiu 0,2 tng cng sut (tnh theo ln)

ng b + Nhn tin + Lu lng Phn cn li (0,8) tng cng sut

ng b Thp hn 3 dB so vi knh thng tin c s; t l 1/8

Nhn tin Ln hn 3 dB so vi knh thng tin c s; ch i vi tc cao nht

Lu lng Bng cng sut trn mt knh thng tin c s; ch i vi tc cao nht

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2.6.5.3. Cc ch thch chung

Cc ch thch sau y p dng cho tt c cc php o CDMA:

1. Tr khi c quy nh khc, cu hnh o kim phi s dng cc tham s trm gc danh nh c cc nh sn xut trm gc cho trc.

2. Cc trng thng bo mo u phi l nhng trng cn cho cc hot ng bnh thng ca thit b di ng v trm gc ngoi tr cc trng hp ring di y hoc trong php o c bit.

Cc gi tr trng c bit ca Bn tin cc tham s truy nhp nng cao:

Trng Gi tr (theo s thp phn)

NUM_MODE_SELECTION_ENTRIES 0 (ch c mt kiu truy nhp xc nh)

ACCESS_MODE 0 (kiu truy nhp c bn)

RLGAIN_COMMON_PILOT 0 (0 dB)

NUM_MODE_PARAM_REC 0 (ch c nhng bn ghi tham s c th kiu truy nhp c bn)

APPLICABLE_MODES 1 (cc tham s cho kiu truy nhp c bn)

EACH_NOM_PWR 0 (0 dB)

EACH_INIT_PWR 0 (0 dB)

EACH_PWR_STEP 0 (0 dB)

EACH_NUM_STEP 4 (5 ln d cho 1 chui)

EACH_ACCESS_THRESH 63 (ngt c hiu qu pht hin ngng hoa tiu)

EACH_SLOT_OFFSET1 0 (khng c sai lch)

EACH_SLOT_OFFSET2 0 (khng c sai lch)

NUM_EACH_BA 1 (mt knh truy nhp nng cao)

EACH_BA_RATES_SUPPORTED 0 (9600 bit/s, c khung 20 ms)

2.6.6. Chu k lm vic tiu chun

My pht phi c kh nng hot ng lin tc cng sut c coi nh y trong mt chu k 24 gi. Thit b phi hot ng vi tt c cc tham s lm vic ca my pht v my thu m n c p ng trong v sau chu k 24 gi.

2.6.7. o t l li khung

T l li khung c tnh nh sau:

FER = 1

Lp vt l cho php cc khung knh lu lng ng ln nhiu tc . Khi gii iu ch knh c s ng ln, cc my thu phi xc nh c tc truyn ca mi khung v cc ni dung ca n.

S khung RCCCH thu ng

S khung RCCCH pht

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Do cc c tnh k thut ny, mt li khung knh lu lng ng ln c xc nh hoc nh l mt li xc nh tc hoc li ni dung. T l li khung knh lu lng ng ln ch c tnh i vi cc khung lm vic, theo cng thc sau:

FERX = 1

Dch v ty chn u vng, dch v ty chn Markov, dch v ty chn s liu kim tra (xem 1.3) cung cp cc phng tin thun li cho vic o t l li gi ca mt tuyn vi gi thit rng tuyn khc ang hot ng vi t s Eb/N0 cao. Trong khi tin hnh cc php o kim gii iu ch knh lu lng ng ln ca trm gc tn hiu bo hiu c th b ngt, trong trng hp t l li gi c xc nh ging nh t l li khung knh lu lng ng ln.

2.6.8. Cc gii hn v tin cy

Mt s php o kim trong Quy chun ny bao gm cc gii hn v tin cy. Cc yu cu c a ra di dng mc tin cy m vi mc tin cy ny t l li ca thit b ang o kim s nm di nhng gi tr cc i xc nh.

Vic o kim tin cy t l li mt cch chun mc i hi cc gi tr Eb/N0 cao hn cc gi tr mong mun. Cc gi tr Eb/N0 c th c chn cho php cc nh sn xut tin hnh cc php o kim nh k i vi cc mc tin cy c th.

Bt k quy trnh thng k tin cy no c th c s dng thit lp mc tin cy. Cc php o kim c th hoc l mt bn hoc hai bn. Chng cng c th hoc vi di c nh hoc di thay i. Quy trnh phi tho mn nhng yu cu sau:

Phi thc hin mt th tc thit lp. Th tc ny bao gm:

- Ch tiu k thut v di o kim cc i v cc tiu.

- Cc tiu ch kt thc sm.

Phi xc lp cc tiu ch mc tiu t - khng t.

Phi ch r cc bc cn tin hnh thc hin li php o trong trng hp c li.

S tng quan v li gia cc php th, c th xut hin trong cc php o li khung trong iu kin pha inh chm, cn phi c tnh n. Ngoi s bin ng v thng k trong cc php o, cc li h thng do cc sai s ca thit b o v vic hiu chun cn c xem xt xc nh cc kt qu o.

Mt th tc c chp nhn c ch ra di y. Thc hin cc php th Bernoulli c lp, trong kt qu ca mi php th c phn loi hoc l li hoc l khng li. Gii hn t l li l lim v Mc tin cy c yu cu l C.

1. Chn mt di o kim ph hp di dng mt s lng li cc i, Kmax. Gi tr chnh xc khng phi l quyt nh, nhng phi ln chc chn rng cc thit b kim tra l t vi xc sut rt cao. Xc sut ny ph thuc vo t s t l d kin /lim gia t l li d kin v gii hn t l li quy nh. Cc gi tr ca Kmax nm trong khong 30 - 100 l ph hp vi cc s d tr trong Quy chun ny.

2. Tin hnh Nmax, hoc nhiu hn, php th trong cc iu kin o th quy nh, y:

S khung lm vic thu ng tc x

S khung lm vic pht tc x

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Nmax = lim

max 2

2)K2,C1(

v )n,P(2 l phn phi 2 nghch o tng ng vi xc sut P v mc linh ng n. Bng 15 a ra cc Nmax ng vi s lng li thc t (K) vi tin cy C = 95% v cc gi tr lim . Bng 16 a ra cc s liu Nmax vi C = 90%.

3. Tnh ton t l li theo kinh nghim:

N = KN/N

v t s t l li N/lim theo kinh nghim, y KN l s li trong N php th thc t thc hin.

4. Nu t s t l li nh hn gii hn tin cy:

N/lim )2K2,C1(

K2

N2

N

hay tng ng l:

N lim

N2

2)2K2,C1(

th thit b ang o kim l t; tri li thit b c coi l khng t.

5. Nu thit b ang o kim b coi l khng t th lp li bc 2-4 hai ln na. Nu thit b t trong c hai ln th ring bit th coi nh thit b v tng th l t, nu khng th thit b l khng t.

Th tc ny c th c thay i cho php kt thc sm. Mt php o kim c th c thc hin mi ln th, hoc sau mt s ln th. Bc 3 v 4 c thay i nh sau:

3'. Sau mi ln th hoc mt s ln th, tnh ton t l li theo kinh nghim nh sau:

N = KN/N

Vi KN l s li tnh ti php th th N hin ti v bao gm c php th th N, v tnh t s t l li N/lim.

4'. Nu sau ln th N, t s t l li t hn gii hn tin cy:

N/lim )2K2,C1(

K2

N2

N

hay tng ng l:

N lim

N2

2)2K2,C1(

th thit b ang o kim c coi l t v dng o kim. Nu s ln th t n Nmax th thit b c coi l khng t v cng kt thc o kim.

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Bng 15 - Gii hn s ln th N i vi tin cy 95%

lim K

0,5% 1,0% 5,0% General

0 599 300 60 3,00/lim

1 599 300 60 3,00/lim

2 949 474 95 4,47/lim

3 1259 630 126 6,30/lim

4 1551 775 155 7,75/lim

5 1831 915 183 9,15/lim

6 2103 1051 210 10,51/lim

7 2368 1184 237 11,84/lim

8 2630 1315 263 13,15/lim

9 2887 1443 289 14,43/lim

10 3141 1571 314 15,71/lim

32 8368 4184 837 41,84/lim

64 15540 7770 1554 77,70/lim

128 29432 14716 2943 147,16/lim

256 56575 28287 5657 282,87/lim

Bng 16 - Gii hn s ln th N i vi tin cy 90%

lim K

10,0% 50,0% General

0 24 5 N/A

1 24 5 2,30/lim

2 39 8 3,89/lim

3 54 11 5,32/ lim

4 67 14 6,63/lim

5 80 16 8,00/lim

6 93 19 9,28/lim

7 106 22 10,53/lim

8 118 24 11,77/lim

9 130 26 13,00/lim

10 143 29 14,21/lim

32 395 79 39,43/lim

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64 745 149 74,44/lim

128 1427 286 142,70/lim

256 2768 554 276,71/lim

3. QUY NH V QUN L

Cc thit b trm gc thng tin di ng s dng cng ngh a truy nhp phn chia theo m CDMA 2000-1x phi tun th cc quy nh k thut trong Quy chun ny.

4. TRCH NHIM CA T CHC, C NHN

Cc t chc, c nhn lin quan c trch nhim thc hin chng nhn hp quy v cng b hp quy cc thit b trm gc thng tin di ng s dng c

qcvn 14

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