Abstract:

With the deployment of TD-SCDMA，hardware of the equipment from TD-Tech supports HSPA，and can support HSPA+ with software update.As to the currently configured HSPA parameter configuration，the UE is assigned associated dedicated physical channel（ADPCH），which leads to the limitation of the admitted users.With the HSPA+ continuous packet connectivity（CPC），the E-DCH semi-persistent scheduling can be configured instead of ADPCH to transfer the signaling or data.Without the limitation of ADPCH，the number of admitted user can be increased.In the paper，based on the analysis of E-DCH semi-persistent scheduling technology，with the PCCPCH RSCP，the ISCP of the uplink slot，the path loss and the capability of UE，MAC-ehs in Node B can initially adapt the link quality and assign the semi-persistent scheduling resource more precisely.With the above initial link adaptation，it will decrease the possibility of reconfiguration of the semi-persistent scheduling resource，and increase the channel code usage and network performance.

Key words: TD-SCDMA, HSPA+, CPC, E-DCH SPS, link adaptation