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AMR Mode Command Transmission Options

AMR Mode Command Transmission Options. Antti Toskala 3GPP TSG RAN WG1 Chairman Nokia Networks. AMR mode commands as a separate TrCh. Transmitting as any transport channel Possibility exists already now in physical layer specification Problem area: Overhead and fitting to low rate channels

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AMR Mode Command Transmission Options

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  1. AMR Mode Command Transmission Options Antti Toskala 3GPP TSG RAN WG1 Chairman Nokia Networks

  2. AMR mode commands as a separate TrCh • Transmitting as any transport channel • Possibility exists already now in physical layer specification • Problem area: Overhead and fitting to low rate channels • Uses 4 transport channels (for AMR) (1) A cmd B C TC Iu RNC Iub BTS CRC

  3. AMR mode commands multiplexed at transcoder level (2) • Multiplexing already at transcoder • No L1/l2 implications • Low overhead • 3 Transport Channels A cmd B C TC TC MUX Iu RNC Iub BTS CRC

  4. Multiplexing at MAC layer (3) • Multiplexing done by MAC protocol in RNC • Problem area: Not in-line with the MAC model • Overhead dependant on the impact to MAC structures, like MAC header • 3 Tranport channels A cmd B C TC Iu MAC RNC MUX Iub BTS CRC

  5. Multiplexing at physical layer • Multiplexing as former 1st multiplexing at physical layer • Low overhead • Complexity concerns on the L1 multiplexing solution • 4 Transport channels, 3 channels at physical layer after 1st multiplexing (4) A cmd B C TC Iu RNC Iub CRC BTS 1stMUX

  6. AMR Mode Command Multiplexing options: Summary (1) (2) (3) (4) A cmd B C A cmd B C A cmd B C A cmd B C TC TC MUX Iu MAC RNC MUX Iub 4 TrCHs 3 TrCHs 3 TrCHs 4 TrCHs CRC BTS CRC CRC CRC 1stMUX

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