GSM Networks : Protocols, Terminology, and Implementation - Chapter 4 potx

... Implementation EIR HLR VLRVLR E-interface MSC G-MSC B-interface BSSs G-interface C-interface C-interface F-interface F-interface D-interface D-interface B-interface External connections Figure 4. 1 The NSS. ... 33 subscriber A: Ki 12 345 678 subscriber B: Ki 2 341 5670 subscriber C: Ki 98753013 = = = HLR GSM SIM . . . . . GSM SIM . . . . . GSM SIM . . . . . Ki 2 341 5670= Ki 12 345...

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... interface and are presented as shown in Figures 1 .4( a) through 1 .4( e). 10 GSM Networks: Protocols, Terminology, and Implementation The following factors were major contributors to the success of GSM: • The ... Model 42 5.6 The Seven Layers of the OSI Reference Model 43 5.6.1 Layer 1: The Physical Layer 43 5.6.2 Layer 2: The Data Link Layer 43 5.6.3 Layer 3:...

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... a car phone and in a handheld telephone. 13 16 GSM Networks: Protocols, Terminology, and Implementation Table 2.1 (continued) Parameter Remarks Security related data Algorithm A3 and A8 (m/f) Required ... which the home PLMN is licensed. Legend: m = mandatory; o = optional; f = fixed, unchangeable value; v = changeable 14 GSM Networks: Protocols, Terminology, and Im...

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... from the compression. 28 GSM Networks: Protocols, Terminology, and Implementation MSC BSC TRAU frame 16 Kbit/s16 Kbit/s 16 Kbit/s 16 Kbit/s 16 Kbit/s 64 Kbit/s 64 Kbit/s 64 Kbit/s TRAU TRAU TRAU frame BTS TRX BTS TRX BSC MSC Figure ... abandoned as sites for antennas shortly after they were brought into service at the initial network startup. 22 GSM Networks: Protocols,...

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... to the lower layers, the Transport Layer performs end-to-end data control. The Transport Layer 44 GSM Networks: Protocols, Terminology, and Implementation • Telephone systems are used for many ... Implementation 77 66 11 22 33 44 55 User data User data Header Header 77 2 2 55 33 4 4 7 7 7 7 6 6 7 7 6 5 5 6 6 6 6 6 6 55 55 55 7 7 7 7 7 7 44 44 44 33 33 22 6 5 7 4 3 2 Ph...

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... channel characteristics. 74 GSM Networks: Protocols, Terminology, and Implementation Channel type 04. 08 - data (RSL) max. 255 octet 8 bit 8 bit Channel number identifier (01) Message type 8 bit 00000001 76 543 210 Message discriminator 8 ... frames from the same TRX. 70 GSM Networks: Protocols, Terminology, and Implementation 012 345 67 Bit 1111P/F101 Figure 6.22...

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... indicates the 92 GSM Networks: Protocols, Terminology, and Implementation 2 046 2 047 2 045 2 044 0 0 012 34 0 1 2 5 049 48 1 2 25 24 567 1 2 3 4 47 48 49 50 0 0 1 2 24 25 1 2 3 4 5 Hyperframe 2 048 Superframes; ... on different values over the Air-interface than on 102 GSM Networks: Protocols, Terminology, and Implementation 112 GSM Networks: Protocols,...

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... Implementation Nr. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 FIB FIB 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 11 1 11 0 0 0 0 0 0 1 11 0 0 FSN FSN 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 4 4 5 5 6 5 7 5 5 6 6 7 7 BIB BIB 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 BSN BSN 11 11 1122 2233 3 344 44 44 44 44 44 44 44 44 44 44 1 1 1 3 3 4 4 5 5 6 7 5 5 6 6 7 7 MSU/FIB ... Management and test...

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... Code: 5-2 2 5 -4 (OPC) Originating Point Code: 5-2 2 4- 0 (SLS) Signaling Link Selection: 5 RELEASED Destination Local Reference : 803A05h Source Local Reference : 32A402h Release Cause cause : 15 ... SCCP=> Routing label: OPC/DPC/SLS SCCP-MT 04 RLSD==> DLR / SLR Release cause EO End of Optional parameters = Signal Unit: MSU BSN: 112 BIB: 1 FSN: 100 FIB: 1 LI: 14 S...

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... which stands for CC and indicates that CC requests the release of a connection when the call is terminated, and 0B hex , which indicates a successful handover. 1 84 GSM Networks: Protocols, Terminology, ... first 8 or 16 bits of the BSSAP distinguish between BSSMAP and DTAP. The DTAP header is 1 74 GSM Networks: Protocols, Terminology, and Implementation M O B I L E...

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