METHOD FOR ACCESSING SERVING CELL BY USER IN LONG TERM EVOLUTION ADVANCED SYSTEM

摘要

A method for accessing a serving cell by a user in Long Term Evolution Advanced (LTE-advanced) system includes the steps of evolved Node B (eNB) notifies a relay that downlink load is a bit little heavy and a user is admitted into a serving cell according to the cell selection access conditions, wherein that the user is admitted into the serving cell according to the cell selection access conditions includes: if the difference value of signal strength of eNB and the relay is less than X1, then the uplink and the downlink of the UE both access the serving cell of the relay, wherein the X1 is a constant; if the difference value of signal strength of eNB and the relay is greater than or equals to X1 and less than X2, then the uplink of the UE accesses the serving cell of the relay and the downlink of the UE accesses the serving cell of the eNB, wherein the X2 is a constant; and if the difference value of signal strength of eNB and the relay is greater than X2, then the uplink and the downlink of the UE both access the serving cell of the eNB. By applying the embodiments of the present invention, in the case of distributed scheduling, the transmission power consumed by the user terminal is low and the bottleneck effect of the backhaul link does not exist in the downlink.