What if header-compression field is not included in Radio Bearer Setup

Question

If header-compression field is not included in Radio Bearer Setup, what will happen to PDCP header compression algorithm?

Answer 1

There are two main functionality is performed by PDCP layer. one is header compression/decompression and second security. header compression is just use to reduce IP packet size so that packet can be sent using less readio resource because best radio resource uses is primarily objective of lte.

If header-compression field is NULL, then PDCP will not peform header compression/decompression for that bearer. It means all the GTP packets coming from SGW to eNB over that bearer. PDCP layer will remove GTP header from all the packets then it will get plain IP packets and without header compression it will submit packets to lower layer RLC layer.

Comments

Thanks that was my thought too that it will not do the compression in this case.