BSS Call setup Flow Diagrams
- 1. CMS 11 BSS Call Flows Call Flow Diagrams Call Flow Diagrams The 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.
- 2. Call Flow Diagrams CMS 11 BSS Call Flows Mobile Originated Call Setup MS RBS BSC MSC BlockedHandoffs (RBS 1102, 1103)(see Table 3-1) C3.1 (19) Service Connect C3.2 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) (5) ResourceRsp (20) Service Connect Completion Order Figure 1 Mobile Originated Call Setup (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 (6) Null traffic data (11) Traffic Channel Preamble The message sequence 4-14 takes place concurrently with the message sequence 15-17. (13) Null traffic data (14) Null traffic data CallAttempts MaxSimultaneousCalls (6.5) MinAvailableVoiceCalls (7.5) start TrafficInSeconds Attempts CallsAttempted ChannelAssignments (RBS 1106, 1107) ChannelAssignments (BSC) MobilePreambleTimeouts MobileAckTimeouts ServiceConnectTimeouts CallsSuccessful (18) Assignment Request The message sequence 15-17 are concurrent 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 BlockingInfo(RBS 1106, 1107) BlockedOriginations (RBS 1102, 1103)(see Table 3-1) C3.1 C3.7 C3.3 C3.3
- 3. CMS 11 BSS Call Flows Call Flow Diagrams Mobile Terminated Call Setup MS RBS BSC MSC GeneralPages (RBS 1106, 1107) (21) Service Connect PageResponsesBySo (RBS 1106, 1107) PageResponseRetransmission (RBS 1106, 1107) (7) ResourceRsp (22) Service Connect Completion Order Figure 2 Mobile Terminated Call Setup (23) AssignmentComplete (24) Alert With Information (25) Connect (26) IS634 Connect (4) Page Response (5) PageRsp (6) ResourceReq (10) ChannelAssignmentCmd (11) IS-95 Channel Assignment (12) Traffic Channel Preamble (14) Base Station Acknowledgement Order (17) MS Acknowledgement Order (1) PagingRequest (3) General Page (18) SCCPConnectionReq (with Paging Response) (19) SCCP Connection Confirmed (9) Null traffic data (8) Null traffic data (13) Traffic Channel Preamble The message sequence 7-17 takes place concurrently with the message sequence 18-20. (15) Null traffic data (16) Null traffic data CallAttempts GeneralPages (BSC) MaxSimultaneousCalls (6.5) MinAvailableVoiceCalls (7.5) start TrafficInSeconds Attempts ChannelAssignments (RBS 1106, 1107) CallsAttempted LandOrigChannelAssignments ChannelAssignments (BSC) MobilePreambleTimeouts MobileAckTimeouts ReachingReverseTraffic (7.5) ServiceConnectTimeouts CallsSuccessful LandOrigAnswered (20) Assignment Request (2) PageReq The message sequence 7-17 are concurrent with messages 18-20 ReachingServiceConnect (7.5) BlockingInfo(RBS 1106, 1107) BlockedOriginations (RBS 1102, 1103)(see Table 3-1) BlockedHandoffs (RBS 1102, 1103)(see Table 3-1) CircuitDataChannelAssignments (7.5) C3.1 C3.2 C3.7 C3.3 C3.3
- 4. Call Flow Diagrams CMS 11 BSS Call Flows Mobile Initiated Call Release MS RBS BSC MSC Figure 3 Mobile Initiated Call Release MS RBS BSC MSC Figure 4 MSC Initiated Call Release (4) Clear Command end TrafficInSeconds MaxSimultaneousCalls (6.5) MinAvailableVoiceCalls (7.5) (1) Release Order (2) Clear Request (3) Release Order (5) Clear Complete (6) SCCP RLSD (7) SCCP RLC MobileInitReleases ReleaseReasonCounts CallsSuccessful CallsCompleted CallsCompletedBeforeReverseTraffic (7.5) CallsCompletedBeforeServiceConnect (7.5) CallsCompletedBeforeChannelAssignment (7.5) MSC Initiated Call Release (1) Clear Command SwitchReleased ReleaseReasonCounts CallsSuccessful CallsCompleted CallsCompletedBeforeReverseTraffic (7.5) CallsCompletedBeforeServiceConnect (7.5) CallsCompletedBeforeChannelAssignment (7.5) end TrafficInSeconds MaxSimultaneousCalls (6.5) MinAvailableVoiceCalls (7.5) (2) Release Order (3) Clear Complete (4) SCCP RLSD (5) SCCP RLC C3.7 C3.7
- 5. CMS 11 BSS Call Flows Call Flow Diagrams BSC Initiated Call Release MS RBS BSC MSC Figure 5 BSC Initiated Call Release MS RBS BSC MSC Registrations (RBS 1106, 1107) RegistrationRetransmissions (RBS 1106, 1107) Figure 6 Location Registration (3) Clear Command DroppedCalls RF Dropped Calls end TrafficInSeconds MaxSimultaneousCalls (6.5) MinAvailableVoiceCalls (7.5) (1) Clear Request (2) Release Order (4) Clear Complete (5) SCCP RLSD (6) SCCP RLC ReleaseReasonCounts Location Registration (4) SCCP ConnectionReq (Location Updating Request) (3) IS-95 Base Station Acknowledgment (8) SCCP RLSD (9) SCCP RLC (1) IS-95 Registration (2) Regnind (5) SCCP Connection Refused (Location Updating Accept) (6) OrderCmd (7) IS-95 Registration Accept Order 8 and 9 are only required if the Location Updating Accept was carried by an SCCP Connection Confirm message instead of an SCCP Connection Refused message (5) OtherPages (RBS 1106, 1107) C3.8
- 6. Call Flow Diagrams CMS 11 BSS Call Flows SMS Delivery Via the Traffic Channel MS RBS BSC MSC (21) Service Connect PageResponsesBySo (RBS 1106, 1107) PageResponseRetransmission (RBS 1106, 1107) (7) ResourceRsp (22) Service Connect Completion Order SMS Delivery Via the Traffic Channel Figure 7 SMS Delivery Via the Traffic Channel (23) AssignmentComplete (24) Alert With Information (25) Connect (26) IS634 Connect (4) Page Response (5) PageRsp (6) ResourceReq (10) ChannelAssignmentCmd (11) IS-95 Channel Assignment (12) Traffic Channel Preamble (17) MS Acknowledgement Order (1) PagingRequest (3) General Page (18) SCCPConnectionReq (with Paging Response) (19) SCCP Connection Confirmed (9) Null traffic data (8) Null traffic data (13) Traffic Channel Preamble The message sequence 7-17 takes place concurrently with the message sequence 18-20. (15) Null traffic data (16) Null traffic data CallAttempts GeneralPages (BSC) MaxSimultaneousCalls (6.5) MinAvailableVoiceCalls (7.5) start TrafficInSeconds Attempts CallsAttempted ChannelAssignments (BSC) MobilePreambleTimeouts MobileAckTimeouts ServiceConnectTimeouts CallsSuccessful LandOrigAnswered (20) Assignment Request (2) PageReq The message sequence 7-17 are concurrent with messages 18-20 (28) SMS Delivery (29) Layer2Ack (27) ADDS Deliver (30) ADDS Deliver Ack LandOrigChannelAssignments ReachingReverseTraffic (7.5) ReachingServiceConnect (7.5) GeneralPages (RBS 1106, 1107) BlockingInfo (RBS 1106, 1107) BlockedOriginations (RBS 1102, 1103)(see Table 3-1) BlockedHandoffs (RBS 1102, 1103)(see Table 3-1) CircuitDataChannelAssignments (7.5) ChannelAssignments(RBS 1106, 1107) (14) Base Station Acknowledgement Order C3.1 C3.2 C3.7 C3.3 C3.3
- 7. CMS 11 BSS Call Flows Call Flow Diagrams SMS Delivery Via the Paging Channel MS RBS BSC MSC PageResponsesBySo (RBS 1106, 1107) PageResponseRetransmission (RBS 1106, 1107) (7) ResourceRsp (21) Paging DataBurstCmd (22) Data Burst (23) Layer2Ack Figure 8 SMS Delivery Via the PagingChannel (25) ADDS Page Ack (4) Page Response (5) PageRsp (6) ResourceReq (10) ChannelAssignmentCmd (11) IS-95 Channel Assignment (12) Traffic Channel Preamble (14) Base Station Acknowledgement Order (17) MS Acknowledgement Order (1) PagingRequest (3) General Page (18) SCCPConnectionReq (with Paging Response) (19) SCCP Connection Refused (9) Null traffic data (8) Null traffic data (13) Traffic Channel Preamble The message sequence 7-17 takes place concurrently with the message sequence 18-20. (15) Null traffic data (16) Null traffic data CallAttempts GeneralPages (BSC) MaxSimultaneousCalls (6.5) MinAvailableVoiceCalls (7.5) start TrafficInSeconds Attempts CallsAttempted LandOrigChannelAssignments ChannelAssignments (BSC) MobilePreambleTimeouts MobileAckTimeouts (20) ADDS Page (2) PageReq The message sequence 7-17 are concurrent with messages 18-20 end TrafficInSeconds Release Reason Counts OtherPages (BSC OHM) OtherPages (BSC PAM) OtherPages (RBS) (24) AckInd ReachingReverseTraffic (7.5) BlockingInfo(RBS 1106, 1107) BlockedOriginations (RBS 1102, 1103)(see Table 3-1) BlockedHandoffs (RBS 1102, 1103)(see Table 3-1) CircuitDataChannelAssignments (7.5) ChannelAssignments (RBS 1106, 1107) GeneralPages (RBS 1106, 1107) C3.1 C3.2 C3.3 C3.3
- 8. Call Flow Diagrams CMS 11 BSS Call Flows Intra-BSC Soft Handoff RBS 2 MS BSC MSC (1) IS-95 Pilot Strength Measurement Message C3.11 Figure 9 Intra-BSC Handoff MS RBS BSC BlockedHandoffs (RBS 1102, 1103)(see Table 3-1) C3.1 (4) Null traffic data Figure 10 Selector Element Transfer NeighborlistHoles RBS 1 SHO_Attempts (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 only required if zone (10) Handoff Performed pilot is dropped Selector Element Transfer (1) ResourceReq (2) ResourceRsp (5) Extended Handoff Direction Message (6) Handoff Completion Message (3) Null traffic data MaxSimultaneousCalls (6.5) Min AvailableVoiceCalls (7.5) BlockingInfo(RBS 1106, 1107) BlockedOriginations (RBS 1102, 1103)(see Table 3-1)
- 9. CMS 11 BSS Call Flows Call Flow Diagrams Inter-MSC/Inter-BSS HHO (Drop) MS S_RBS S_BSC (1) MS is in Conversation C3.9 (6) Extended Hadoff Direction Message Figure 11 Inter-MSC/Inter-BSS Hard Handoff (Drop) S_MSC T_MSC (2) Handoff Required (3) FACDIR2 (4) facdir2 (5) Handoff Command (7) Handoff Commenced Foward Traffic Channel Frames Reverse Traffic Channel Frames (8) Handoff Completion Message (9) T_BS Ack Order (10) MSONCH (11) Clear Command (12) Clear Complete Voice Traffic C2CVoiceDropAttempts C2CDataDropAttempts C2ADropAttempts C2CVoiceDropsKnownSuccessful C2CDataDropsKnownSuccessful C2ADropsKnownSuccessful C3.10
- 10. Call Flow Diagrams CMS 11 BSS Call Flows Inter-MSC/Inter-BSS HHO (Add) MS T_RBS T_BSC C3.9 VoiceAddAttempts DataAddAttempts (4) CRMResourceReq (5) CRMResourceRsp (12) Handoff Completion Message C3.10 (15) In-Traffic System Parameter Message Figure 12 Inter-MSC/Inter-BSS Hard Handoff (Add) T_MSC S_MSC (2) Handoff Request (1) FACDIR2 (3) SCCP Connection Confirm Forward Traffic Channel Frames Reverse Traffic Channel Frames (14) MSONCH (13) Handoff Complete Voice Traffic (6) TCEConnectReq (7) TCEConnectRsp (9) Handoff Request Ack (10) facdir2 (11) BeginReverseTrafficInd (16) Neighbor List Update Message (17) Service Connect (18) Service Connect Complete VoiceSuccessfulAdds DataSuccessfulAdds
- 11. CMS 11 BSS Call Flows Call Flow Diagrams Inter-MSC/Intra-BSS HHO MS S_RBS BSC (1) MS is in Conversation (2) TCEEarliestPNOffsetInd (8) Extended Hadoff Direction Message Figure 13 Inter-MSC/Intra-BSS Hard Handoff T_RBS MSC Data Traffic Reverse Traffic Channel Frames (11) Handoff Completion Message (13) Release Order IntraBSS_HHO_Attempts (3) CRMResourceReq (4) CRMResourceRsp (5) TCEConnectReq (6) TCEConnectRsp (7) TCEForwardTraffic message (12) Hadoff Completion Msg (14) Handoff Performed Voice Traffic Data Traffic (9) TPURevTrafficMsg (10) TCEBeginRevTrafficInd IntraBSS_HHO_Completions C3.10 C3.9