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Which algorithm is used by PDCP layer to compress the IP header in to Token?

+4 votes

Can someone provide me some details that how this conversion is possible by which it compresses the IP header (Minimum of 20 bytes) in to Token that is 1 to 4 bytes ?

posted Jun 9, 2014 by Hiteshwar Thakur

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1 Answer

+1 vote

There are list methods which can be used for RoHC framework as follows:
1. Least Significant Byte Encoding. There is some limitation of LSB encoding that's why it's variant i.e. WLSB is used.
2. Scaled RTP Timestamp encoding.
3. Timer-based RTP Timestamp Compression.
4. IP-ID offset encoding.
5. Self-Describing Variable Length Code (SDVL) Encoding

Every data bearer established between UE and eNodeB, is associated with a RoHC profile Id.
profile Id corresponds to combination of network layer , transport layer and upper layer protocol.

answer Jun 10, 2014 by Rupam
Thank you for your Valuable Answer.
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