(12) united states patent donaghey (45) date of patent ...… · us 8,675,590 b2 page 3 (56)...

(12) United States Patent Donaghey

US008675590B2

US 8,675,590 B2 *Mar. 18, 2014

(10) Patent N0.: (45) Date of Patent:

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PERSONAL AREA NETWORK WITH AUTOMATIC ATTACHMENT AND DETACHMENT

Inventor: Robert J Donaghey, Lexington, MA (Us)

Assignee: Tri-County Excelsior Foundation, Marshall, TX (US)

Notice: Subject to any disclaimer, the term of this patent is extended or adjusted under 35 U.S.C. 154(b) by 0 days.

This patent is subject to a terminal dis claimer.

Appl. No.: 13/430,650

Filed: Mar. 26, 2012

Prior Publication Data

US 2013/0003667 A1 Jan. 3, 2013

Related US. Application Data

Continuation of application No. 12/ 699,846, ?led on Feb. 3, 2010, noW Pat. No. 8,149,829, Which is a continuation of application No. 11/728,246, ?led on Mar. 23, 2007, noW Pat. No. 7,756,129, Which is a continuation of application No. 10/894,406, ?led on Jul. 19, 2004, noW Pat. No. 7,218,633, Which is a continuation of application No. 09/535,591, ?led on Mar. 27, 2000, noW Pat. No. 6,804,232.

Int. Cl. H04L 12/28 (2006.01) H04] 3/14 (2006.01) G08C 15/00 (2006.01) G06F 11/00 (2006.01) US. Cl. USPC .......... .. 370/329; 370/338; 370/389; 709/227

(58) Field of Classi?cation Search USPC ............... .. 370/23(L252, 3104338, 389402;

709/224i229 See application ?le for complete search history.

(56) References Cited

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4,549,293 A 10/1985 Christian et a1. 4,775,931 A 10/1988 Dickie et al. 5,029,183 A 7/1991 Tymes 5,128,664 A 7/1992 Bishop 5,159,592 A 10/1992 Perkins 5,276,680 A 1/1994 Messenger 5,317,693 A 5/1994 Cuenod et al.

(Continued)

FOREIGN PATENT DOCUMENTS

CA 2179349 A1 12/1997 EP 874248 A2 10/1998 GB 2309856 A 8/1997 JP 10247927 9/1998 JP 2000069046 A 3/2000

(Continued) OTHER PUBLICATIONS

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(Continued) Primary Examiner * Man Phan

(57) ABSTRACT A network (100) includes a hub device (110) and at least one unattached peripheral device (120). The unattached periph eral device (120) transmits an attach request to the hub device (110) With a selected address, receives a neW address from the hub device to identify the unattached peripheral device (120), and communicates With the hub device (110) using the neW address.

59 Claims, 17 Drawing Sheets

912

l

HUB STATES

. _ _ _ _ WAIT WHEN NO-DATA-TRANSFER-TOKEN SENT

913 914

TOKEN TIME COMMAND

HUB-ONLY ACTIVITY ' , PEA-ON LY ACTIVITY .

US 8,675,590 B2

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* cited by examiner

US. Patent Mar. 18, 2014 Sheet 1 0f 17 US 8,675,590 B2

FIG. 1


ovw

N .QE


m .GE

GNU

own

"I


NI SEND (SNIPPET) i, NI RECEIVE (SNIPPET)

LLT SEND (SNIPPET), (n+m) LLT READ (SNIPPET), LLT READ (STATUS) M LLT SEND (STATUS)

LLD S/R (STREAM) (mm) LLD S/R (STREAM)

I I DIGITAL CONTROL DIGITAL CONTROL

RF TRANSCEIVER —/\/— RF TRANSCEIVER

FIG. 5


O

CO


STREAM USAGE PLAN SIZE OF l0_0 DATA BLOCK DIRECTION

o m <———\:|:l 1 T_1Q : <—-_

2 71 ' PEA

3 m <—-1 I TO 4 m : HUB 5 m .

<—---———— 6 Q 7 Z22 8 @Q ------------------- ~ -

9 73 . 10 m ; _—’

11 14-‘- ——>| | j HUB TO

12 m = PEA 13 14 ,

14 149 15 m

FIG. 7A


s_0_ TDMA FRAME STRUCTURE

+ BEACON m B XXXXXX HUB BROADCAST

‘Kg-ZEN T XXXXXX HUB BROADCAST

DATA 830 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX PEA <—> HUB

0O. (- 000 4-—— 000

ToalggN T XXXXXX HUB BROADCAST

DATA 830 XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX PEA <—> HUB

FIG. 8

US. Patent

FIG. 98

Mar. 18,2014 Sheet 11 0117 US 8,675,590 B2

HUB STATES

911

-> HUB WAITS FOR TDMA TOKEN COMMAND /‘/

v 912

HUB FINDS NEXT DATA BLOCK /‘/

¢ 913 HUB READS MAC ADDRESS AND /

STREAM NUMBER FROM DATA BLOCK

1} 914 HUB GENERATES TOKEN FROM /

MAC ADDRESS AND STREAM NUMBER

@ 915 HUB WAITS FOR TOKEN TIME IN TDMA PLAN /‘/

$ 916 ‘n HUB BROADCASTS TOKEN TO ALL PEAS, THEN //

WAITS IF NO-DATA-TRANSFER-TOKEN SENT

l 917 HUB DETERMINES SIzE AND DIRECTION OF // TRANSMISSION FROM STREAM NUMBER AND

WAITS FOR DATA TIME IN TDMA PLAN

11 919 HUB READS OR WRITES CONTENTS OF

DATA BUFFER IN DATA BLOCK

# 919 HUB UPDATES FOR NEXT TRANSMISSION /‘/


PEA STATES

" 921

PEA WAITS FOR TDMA TOKEN COMMAND, THEN // WAITS FOR TOKEN BROADCAST TIME IN TDMA PLAN

V 9

PEA RECEIVES TOKEN FROM HUB /‘/

I 9 PEA DECODES TOKEN AND DETERMINES MAC //

ADDRESS AND STREAM NUMBER

I 9 PEA DETERMINES IF IT RESPONDS TO THIS MAC // ADDRESS AND PEA NUMBER, WAITING IF NOT

V 9 PEA FINDS NEXT DATA BLOCK ASSOCIATED WITH / TOKEN'S MAC ADDRESS AND STREAM NUMBER

I 926 PEA wRITES MAC ADDRESS AND // STREAM NUMBER IN DATA BLOCK

I 927 PEA DETERMINES SIzE AND DIRECTION OF / TRANSMISSION FROM STREAM NUMBER AND

wAITS FOR DATA TRANSFER TIME IN TDMA PLAN

I‘ 928 PEA READS OR WRITES CONTENTS OF

DATA BUFFER IN DATA BLOCK

I 929 PEA UPDATES FOR NEXT TRANSMISSION //

FIG. 9C


<2 .UE

I'I.

Q00 02mm


@ v 1110

_> HUB BROADCASTS HEARTBEAT // ANNOUNCING RANGE OF AMAC VALUES

I 1120 HUB LISTENS FOR ATTACH INTEREST AT EACH /

AMAC ADDRESS IN RANGE OF VALUES

I 1130 HUB LISTENS FOR ATTACH ,/

REQUEST FROM UNATTACHED PEA

I 1140 HUB ASSIGNS AND SENDS MAC ADDRESS TO y/

UNATTACHED PEA AT AMAC ADDRESS

I 1150 HUB LISTENS FOR ATTACH CONFIRMATION FROM //

PEA AT NEW ASSIGNED MAC ADDRESS

I 1160 HUB SENDS ATTACH CONFIRMATION TO PEA AND // LISTENS FOR ACKNOWLEDGMENT FROM PEA

FIG. 11


( START )

_ 1 1210

UNA'ITACHED PEA WAITS FOR HEARTBEAT // ANNOUNCING RANGE OF AMAC VALUES

I 1220 PEA SELECTS AMAC ADDRESS AT RANDOM // FROM ANNOUNCED RANGE OF VALUES

I 1230 PEA PREPARES ATTACH INTEREST AND ATTACH // REQUEST AT AMAC ADDRESS FOR HUB To READ

v 1240

PEA WAITS FOR ATTACH ASSIGNMENT / (WITH NEW MAC ADDRESS) AT AMAC ADDRESS

11 ‘I250

PEA PREPARES ATTACH CONFIRMATION AT NEW / ASSIGNED MAC ADDRESS FOR HUB TO READ

I 1260 PEA WAITS FOR ATTACH CONFIRMATION ,/

FROM HUB AT NEW MAC ADDRESS

I 1270 PEA PREPARES ACKNOWLEDGMENT AT / NEW MAC ADDRESS FOR HUB TO READ

CR3)

FIG. 12


i . 1310 PEA USTENS FOR HUB HEARTBEAT //

AND KEEP ALIVE MESSAGES

1 1320 PEA REsETs HEARTBEAT COUNTER TO zERD UPON ATTACHMENT AND UPON RECEIPT /

OF KEEP-ALIVE MESSAGE

i V 1330 PEA INCREMENTS HEARTBEAT CouNTER UPON /

RECEIPT OF HUB HEARTBEAT

TL 1340 PEA ASSUMES IT as DETACHED WHEN HEARTBEAT ,/ CDuNTER REACHES PREDEFINED THRESHOLD

1 1350 PEA ATTEMPTS TD REATTACH TO HUB /

@

FIG. 13