5.8a CS user plane multiplexing

25.4673GPPRelease 17Stage 2TSUTRAN architecture for 3G Home Node B (HNB)

If the HNB-GW had signalled on the HNB REGISTER ACCEPT a mux port and if the HNB has capability to support CS user plane multiplexing, the HNB may send the multiplexed packets to the mux port at the HNB-GW.

The HNB, for the same UE, shall not send multiplexed packets over multiple ports. i.e., once the HNB chooses to multiplex CS user plane packets for a given UE on the uplink, it shall send those multiplexed packets only to the assigned mux port on the HNB-GW. For those UEs whose CS user plane packets are not being multiplexed, the HNB shall send packets only to the port number assigned via RAB assignment request.

When the HNB-GW receives multiplexed packet, it shall de-multiplex before sending them to the CN.