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Method, apparatus and system for bearing circuit switched domain service data over radio bearer

  • US 9,565,683 B2
  • Filed: 12/29/2009
  • Issued: 02/07/2017
  • Est. Priority Date: 08/01/2007
  • Status: Active Grant
First Claim
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1. A method for processing Circuit Switched domain (CS-domain) service data, wherein the CS-domain service data includes a speech service data comprising substreams A, B, and C with different importance classes, the method comprising:

  • encapsulating the substreams A, B, and C into a single speech frame;

    mapping the speech frame onto a single radio bearer (RB);

    encapsulating the RB with radio link control (RLC) protocol;

    mapping the RLC to a dedicated traffic channel (DTCH); and

    mapping the DTCH to an High Speed Download Packet Access (HSDPA) downlink shared channel (HS-DSCH);

    wherein the speech frame comprises;

    Frame Type, Payload, and Padding, wherein the Frame Type has a fixed length and represents an Adaptive Multi-Rate (AMR) or Adaptive Multi-Rate Wideband (AMR-WB) coding mode, the payload is a data made up of the concatenated substreams A, B and C, and the padding is a filler bit, when a sum of the frame type and the payload is out of alignment against bytes, several bits are used as a padding to make the whole speech frame aligned against bytes.

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