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RBSN - Reduced Block Sequence Number

In GPRS each downlink RLC/MAC (Radio Link Control / Medium Access Control) control block contains a Reduced Block Sequence Number bit. At the time that an in sequence RLC / MAC control block is designated for transmission, the value of RBSN is set equal to the value of the control send state variable.


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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