Motorola iDEN Specifications Page 116
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Call Processing
Packet Data Networking
6-6 68P81095E55-E August 08, 2000
Queued Continuous Reservation ALOHA
Queued Continuous Reservation ALOHA (QCRA) is a standard protocol used to
optimize the buffering and transmission of data across the radio link. If more than
one MS on a cell is using Packet Data, the data from each MS is received and radio
link timeslots are allocated according to the QCRA protocol. This queuing
establishes a method of allocating packet channel resources in response to user and
system load.
Call Processing
The manner of dealing with other communication activities when the MS is currently
involved in Packet Data Networking is summarized in Table 6-2.
Table 6-2 Packet Data Processing
Event State MS in Packet Data Session
Data sent to mobile No conflict
SMS message delivery SMS retries
Incoming Interconnect or Circuit Data No Response to page
Dispatch Group Call Involved mobile is bypassed
Dispatch Private Call Target Not Available sent
Call Alert Target Not Available sent
- Technical Overview 1
- Notice to Users: 2
- Computer Software Copyrights 2
- Trademarks 2
- Document Overview 3
- Table of Contents 5
- Table of Contents (continued) 10
- Chapter 1 15
- Organization 16
- Service Area 17
- Logical Environments 18
- TalkGroup 19
- Advantages 20
- Dispatch Calling 21
- Interconnect Calling 21
- Short Messaging Service 21
- Mobile Stations 21
- Physical Organization 22
- Technological Advancements 23
- Introduction 24
- Software Release 9.1 26
- Caution 27
- Chapter 2 29
- Mobile Station 30
- Physical Components 31
- Functional Characteristics 33
- Metro Packet Switch 37
- Tier -1 MPS 38
- (DAP to DAP 38
- MPS to MPS) 38
- Packet Duplicator 41
- Mobile Data Gateway 43
- Base Site Controller 44
- BSC Implementation 47
- Mobile Switching Center 48
- Administrative Data Center 57
- Chapter 3 59
- Operating Characteristics 59
- Interface Protocols 60
- Radio Link 62
- Radio Carrier Characteristics 63
- Signal Processing 63
- Carrier Characteristics 64
- Carrier Modulation 64
- Digital Voice Processing 65
- Radio Carrier Access Method 65
- Cell Sites 69
- Frequency Re-use 70
- Signaling Scheme 72
- Over-The-Air Programming 73
- Initial Registration 74
- Ongoing Registration 75
- Authentication 76
- DAP - HLR & i-HLR 77
- MSC - HLR 77
- DataBase Subsystems 78
- Over the Air Parameters 80
- Network Paths 82
- Packet Duplicators 84
- Chapter 4 87
- Dispatch Call Procedure 92
- Capacity Enhancements 93
- Dispatch Group Calls 95
- Local Service Area 96
- T. N. French 97
- Dispatch Call Types 100
- Dispatch Call Processing 100
- Limitations 101
- Provisioning 102
- Chapter 5 103
- Functions 104
- Interconnect Call Processing 104
- Call Restrictions 105
- Emergency Call 105
- Call Detail Records 105
- Channel Efficiency 105
- System Identifiers 106
- Interconnect Call Procedure 107
- Interconnect Call Types 109
- Chapter 6 111
- General 112
- Packet Data Networking 112
- Mobile Computing 113
- Inter-System Mobility 114
- Packet Data Flow 115
- Call Processing 116
- Chapter 7 117
- MSC (International or NADP) 119
- Appendix A 121
- Pleisiochronous Timing 122
- Dispatch Call Model 123
- Interconnect Call Model 123
- Capacity Tables 124
- 12 BRs× PCCH SCCH+()–127≤ 126
- BRs 6×()3–()BusyQueue+176= 126
- Radio Frequency Channel Types 127
- 3.2Mhz3.2Mhz 128
- Data Link Layer 129
- Network Layer 131
- Transport Layer 131
- Session Layer 131
- Presentation Layer 131
- Application Layer 131
- Control Channels 132
- Traffic Channels 133
- Unassigned Channel 134
- Appendix C 135
- System Services 137
- User Control Services 138
- User Services 139
- Switch-based Data Collection 140
- Services and Features 142
- Appendix D 143
- Mobility Management 144
- Handover 144
- Location Handover 145
- Hosting Cell 146
- Reliability 147
- Neighbor Cell List 149
- Handover Measurements 149
- Handover Operation 151
- Coverage 153
- Dropped Calls 153
- Numerics 155
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