关键词: 多点协作传输, 协作远端射频单元选择, 组播业务, 负载状况

Abstract:

In the centralized, collaborative, cloud-based and clean wireless access network(C-RAN), the problem of the selection of the RRUs in cooperating group realizing CoMP for multicast service exists. In this paper, we propose an algorithm for RRU selection based on the signal receiving quality of multicast users and immediate load of RRUs. This algorithm adopts the channel capacity and the occupied resources as the optimal objects to establish the objective functions. And we find the optimal solution of the objective functions to achieve the appropriate cooperating RRU group. Contrasting with the selection algorithm based on signal receiving quality and geographical location, simulations show that the proposed algorithm improves the throughput and service fairness of multicast users in the CoMP system, and meanwhile reduces the load of the selected cooperative RRU and balances the system load.

Key words: CoMP, cooperating RRU selection, multicast service, load