GPRS in Practice: A Companion to the Specifications by Peter McGuiggan

By Peter McGuiggan

Pros fast observe that, even if the technical requirements for GPRS conceal all components of the engineering features intimately and intensity, they're missing in a single vital characteristic; the conceptual framework in which the necessities take a seat - GPRS in Practice fills this hole. by way of starting with an evidence of why GPRS is important and describing the center proposal of GPRS operations, the TBF (Temporary Block Flow), a revision part then covers the GSM Air Interface with its Radio, actual and Logical channels and this steadily results in the GPRS logical channels - what they do and the way they do it. The e-book then strikes directly to a quick advent of the GPRS protocol stack which gives a release pad for an in depth journey into the entire layers of this stack, with exact diagrams and factors of every layer built-in into an total realizing of ways the GPRS carrier operates in perform.

  • Provides descriptions of why methods are designated after which sincerely explains how the requisites paintings in practice 
  • Provides a layered view of the GPRS protocol and offers intimately with every one layer separately 
  • Includes various acronyms and abbreviations followed through their complete meaning

An worthy source for cellular community operators, improvement and deployment engineers and Handset designers.

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Extra resources for GPRS in Practice: A Companion to the Specifications

Sample text

Frame 12 is one burst of the SACCH, which is paired with the TN5 TCH. As it takes four bursts to convey a SACCH message, then four 26-frame multiframes are required, that is 104 frames. This combination of four 26-frame multiframes carrying a SACCH message is sometimes called a SACCH block. 615 ms to send. 5 s, and is the maximum rate of measurement reports. Frames 13–24 (and their multiples) carry customer data and frame 25 (and its multiples) carry the idle channel. The 26-frame multiframe then repeats.

However, as the FCCH and SCH define TN0 of the BCCH carrier, these logical channels are not copied to any other TN. 4 is assigned as a traffic channel full rate (TCH/ FR). Traffic channels have a 26-frame multiframe structure. FN0–11 within the 26-frame multiframe carry customer data. Frame 12 is one burst of the SACCH, which is paired with the TN5 TCH. As it takes four bursts to convey a SACCH message, then four 26-frame multiframes are required, that is 104 frames. This combination of four 26-frame multiframes carrying a SACCH message is sometimes called a SACCH block.

2 GSM physical channels. This diagram shows a BTS using four ARFCNs, 1, 4, 10 and 16. The mobile station is using TN5 in CS mode on ARFCN 16, which is the BCCH (broadcast control channel) carrier. TN0 of the BCCH carrier is carrying the CCHs (common channels) F ¼ FCCH (the frequency correction channel), S ¼ SCH (the synchronisation channel), B ¼ BCCH (the broadcast control channel) and, not shown, C ¼ CCCH (common control channels). The mobile station transmits TN5 after a three burst delay, allowing the use of a simple switch within the handset.

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