bss call setup flow diagrams

CMS 11 BSS Call Flows Call Flow Diagrams

Call Flow DiagramsThe figures on the following pages show the CMS 11 BSS call flows and performance attributes for the following call scenarios:

n Mobile Originated Call Setup

n Mobile Terminated Call Setup

n Mobile Initiated Call Release

n MSC Initiated Call Release

n BSC Initiated Call Release

n Location Registration

n SMS Delivery Via the Traffic Channel

n SMS Delivery Via the Paging Channel

n Intra-BSC Soft Handoff

n Selector Element Transfer

n Inter-MSC/Inter-BSS Hard Handoff (Drop)

n Inter-MSC/Inter-BSS Hard Handoff (Add)

n Inter-MSC/Intra-BSS Hard Handoff

Performance attributes are shown in bold on the call flow diagram, and each is associated with a circle on the diagram that indicates where the attribute is pegged. Attributes that are not linked to a specific external message on the diagram are collected internally within the BSC at the position indicated.

n If the circle is at the start of the arrow, the attribute is pegged when the message is sent.

n If the circle is over the arrowhead, the attribute is pegged when the message is received.

n If the circle is not with an arrow, but touches the vertical line, the attribute is pegged at that point in time.

Call Flow Diagrams CMS 11 BSS Call Flows

Figure 1 Mobile Originated Call Setup

Mobile Originated Call Setup

(19) Service Connect

(20) Service Connect Completion Order

(4) ResourceReq

(8) ChannelAssignmentCmd

(9) IS-95 Channel Assignment

(10) Traffic Channel Preamble

(12) Base Station Acknowledgement Order

(15) MS Acknowledgement Order

(16) SCCPConnectionReq

(with CMServiceRequest)

(17) SCCP Connection Confirmed

(7) Null traffic data


(5) ResourceRsp


RBSMS MSCBSC

The messagesequence 4-14takes placeconcurrentlywith themessagesequence 15-17.



CallAttempts

MaxSimultaneousCalls (6.5)MinAvailableVoiceCalls (7.5)

start TrafficInSeconds

Attempts

CallsAttempted

ChannelAssignments (RBS 1106, 1107)

MobilePreambleTimeouts

MobileAckTimeouts

ServiceConnectTimeouts

CallsSuccessful

ChannelAssignments (BSC)

(18) Assignment Request

The message sequence 15-17 areconcurrent with messages 4-14

(1) IS-95 Origination

(2) IS-95 Base

Station Acknowledgement

(21) Assignment Complete

MobileOrigChannelAssignments

CircuitDataChannelAssignments (7.5)

ReachingReverseTraffic (7.5)

ReachingServiceConnect (7.5)

(3) Origination Ind

SuccessfulOriginations (RBS 1102, 1103)OriginationsBySo(RBS 1106, 1107)OriginationRetransmission(RBS 1106, 1107)BlockingInfo(RBS 1106, 1107)BlockedOriginations (RBS 1102, 1103)(see Table 3-1)BlockedHandoffs (RBS 1102, 1103)(see Table 3-1)

BlockingInfo(RBS 1106, 1107)BlockedOriginations (RBS 1102, 1103)(see Table 3-1)

BlockedHandoffs (RBS 1102, 1103)(see Table 3-1)

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Figure 2 Mobile Terminated Call Setup

Mobile Terminated Call Setup



(23) AssignmentComplete

(24) Alert With Information

(25) Connect

(26) IS634 Connect

(4) Page Response

(5) PageRsp

(6) ResourceReq






(1) PagingRequest

(3) General Page


(with Paging Response)




(7) ResourceRsp


RBSMS MSCBSC

The messagesequence 7-17takes placeconcurrently withthe messagesequence 18-20.



CallAttempts

GeneralPages (BSC)

MaxSimultaneousCalls (6.5)MinAvailableVoiceCalls (7.5)start TrafficInSeconds

Attempts

ChannelAssignments(RBS 1106, 1107)


MobileAckTimeouts


CallsSuccessful

LandOrigAnswered



(2) PageReq


CallsAttempted

LandOrigChannelAssignments



PageResponsesBySo (RBS 1106, 1107)PageResponseRetransmission (RBS 1106, 1107)



GeneralPages (RBS 1106, 1107)


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Figure 3 Mobile Initiated Call Release

Figure 4 MSC Initiated Call Release

Mobile Initiated Call Release

(4) Clear Command

RBSMS MSCBSC

end TrafficInSeconds


(1) Release Order

(2) Clear Request

(3) Release Order

(5) Clear Complete

(6) SCCP RLSD

(7) SCCP RLC

MobileInitReleasesReleaseReasonCounts

CallsSuccessfulCallsCompleted

CallsCompletedBeforeReverseTraffic (7.5)CallsCompletedBeforeServiceConnect (7.5)

CallsCompletedBeforeChannelAssignment (7.5)

MSC Initiated Call Release

(1) Clear Command

RBSMS MSCBSC



(2) Release Order

(3) Clear Complete

(4) SCCP RLSD

(5) SCCP RLC

SwitchReleasedReleaseReasonCountsCallsSuccessfulCallsCompletedCallsCompletedBeforeReverseTraffic (7.5)CallsCompletedBeforeServiceConnect (7.5)CallsCompletedBeforeChannelAssignment (7.5)

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Figure 5 BSC Initiated Call Release

Figure 6 Location Registration

BSC Initiated Call Release

(3) Clear Command

RBSMS MSCBSC

end TrafficInSecondsMaxSimultaneousCalls (6.5)MinAvailableVoiceCalls (7.5)

DroppedCalls

(1) Clear Request

(2) Release Order

(4) Clear Complete

(5) SCCP RLSD

(6) SCCP RLC

ReleaseReasonCounts

RF Dropped Calls

Location Registration

(4) SCCP ConnectionReq

(Location Updating Request)

RBSMS MSCBSC

(3) IS-95 Base StationAcknowledgment

(8) SCCP RLSD

(9) SCCP RLC

(1) IS-95 Registration

(2) Regnind

(5) SCCP Connection Refused

(Location Updating Accept)(6) OrderCmd

(7) IS-95 RegistrationAccept Order

8 and 9 are only required if the Location UpdatingAccept was carried by an SCCP ConnectionConfirm message instead of an SCCP ConnectionRefused message (5)

Registrations (RBS 1106, 1107)RegistrationRetransmissions (RBS 1106, 1107)

OtherPages (RBS 1106, 1107)

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SMS Delivery Via the Traffic Channel

Figure 7 SMS Delivery Via the Traffic Channel

SMS Delivery Via the Traffic Channel



(23) AssignmentComplete

(24) Alert With Information

(25) Connect

(26) IS634 Connect

(4) Page Response

(5) PageRsp

(6) ResourceReq





(1) PagingRequest

(3) General Page






(7) ResourceRsp


RBSMS MSCBSC




CallAttempts

GeneralPages (BSC)

MaxSimultaneousCalls (6.5)MinAvailableVoiceCalls (7.5)start TrafficInSeconds

Attempts

CallsAttempted


MobileAckTimeouts


CallsSuccessful

LandOrigAnswered



(2) PageReq


(28) SMS Delivery

(29) Layer2Ack

(30) ADDS Deliver Ack

(27) ADDS Deliver





BlockingInfo (RBS 1106, 1107)BlockedOriginations (RBS 1102, 1103)(see Table 3-1)




ChannelAssignments(RBS 1106, 1107)


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Figure 8 SMS Delivery Via the PagingChannel

SMS Delivery Via the Paging Channel

(21) Paging DataBurstCmd

(22) Data Burst

(23) Layer2Ack

(25) ADDS Page Ack

(4) Page Response

(5) PageRsp

(6) ResourceReq






(1) PagingRequest

(3) General Page



(19) SCCP Connection Refused



(7) ResourceRsp


RBSMS MSCBSC




CallAttempts

GeneralPages (BSC)


start TrafficInSeconds

Attempts

CallsAttempted


MobileAckTimeouts


(20) ADDS Page

(2) PageReq



Release Reason Counts

OtherPages (BSC OHM)OtherPages (BSC PAM)

OtherPages (RBS)

(24) AckInd







ChannelAssignments (RBS 1106, 1107)


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Figure 9 Intra-BSC Handoff

Figure 10 Selector Element Transfer

Intra-BSC Soft Handoff

RBS2

MS MSCBSC

NeighborlistHoles

RBS1

SHO_Attempts

(1) IS-95 Pilot Strength Measurement Message

(2) ResourceReq

(3) ResourceRsp

(4) ConnectReq/Rsp

(5) Selector Frames

(6) Selector Frames

(7) ChannelElementCntInd

(8) IS-95 Extended Handoff Direction Message

(9) IS-95 Handoff Completion Message

(10) Handoff Performed10 only required if zonepilot is dropped

Selector Element Transfer

(1) ResourceReq

(5) Extended Handoff Direction Message

(6) Handoff Completion Message



(2) ResourceRsp

RBSMS BSC

MaxSimultaneousCalls (6.5)Min AvailableVoiceCalls (7.5)



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Figure 11 Inter-MSC/Inter-BSS Hard Handoff (Drop)

Inter-MSC/Inter-BSS HHO (Drop)

S_RBSMS S_BSC

(1) MS is in Conversation

(6) Extended Hadoff Direction Message

T_MSCS_MSC

(2) Handoff Required

(3) FACDIR2

(4) facdir2

(5) Handoff Command

(7) Handoff Commenced

Foward Traffic Channel Frames

Reverse Traffic Channel Frames


(9) T_BS Ack Order

(10) MSONCH

(11) Clear Command

(12) Clear Complete

Voice Traffic

C2CVoiceDropAttemptsC2CDataDropAttemptsC2ADropAttempts

C2CVoiceDropsKnownSuccessfulC2CDataDropsKnownSuccessfulC2ADropsKnownSuccessful

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Figure 12 Inter-MSC/Inter-BSS Hard Handoff (Add)

Inter-MSC/Inter-BSS HHO (Add)

T_RBSMS T_BSC


(15) In-Traffic System Parameter Message

S_MSCT_MSC

(2) Handoff Request

(1) FACDIR2

(3) SCCP Connection Confirm

Forward Traffic Channel Frames


(14) MSONCH

(13) Handoff Complete

Voice Traffic

(4) CRMResourceReq

(5) CRMResourceRsp

(6) TCEConnectReq

(7) TCEConnectRsp

(9) Handoff Request Ack

(10) facdir2

(11) BeginReverseTrafficInd

(16) Neighbor List Update Message


(18) Service Connect Complete

VoiceSuccessfulAddsDataSuccessfulAdds

VoiceAddAttemptsDataAddAttempts

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Figure 13 Inter-MSC/Intra-BSS Hard Handoff

Inter-MSC/Intra-BSS HHO

S_RBSMS BSC

(1) MS is in Conversation

(8) Extended Hadoff Direction Message

MSCT_RBS

Data Traffic



(13) Release Order

(12) Hadoff Completion Msg

(14) Handoff Performed

Voice Traffic

(2) TCEEarliestPNOffsetInd

(3) CRMResourceReq

(4) CRMResourceRsp

(5) TCEConnectReq

(6) TCEConnectRsp

(7) TCEForwardTraffic message

Data Traffic

(9) TPURevTrafficMsg

(10) TCEBeginRevTrafficInd

IntraBSS_HHO_Attempts

IntraBSS_HHO_Completions

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bss call setup flow diagrams

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