Patent ID: 8780806

Claim:
A method of coordinated scheduling among multiple cells, applied in a Coordinated Multiple Point (CoMP) system among Base Stations, the method comprising: selecting a relay Base Station (BS), the relay BS is a BS of a cooperative cell in a cooperative set, and a BS in the other cooperative cells in the cooperative set is called as a cooperative BS; the relay BS receiving an initial scheduling result of each cooperative cell in the cooperative set, summarizing the initial scheduling result to be an iteration parameter; the relay BS sending a re-scheduling indication information which carries the summarized initial scheduling result to each of the cooperative BS; and each of the cooperative BS calculating a pre-scheduling scheme to obtain a pre-scheduling result based on a strategy and sending the pre-scheduling result to the relay BS, wherein the strategy is that in addition to the use of the equality and the current channel state of each to-be-scheduled user, the performance loss of other cooperative cells caused by the pre-scheduling of the cooperative cell is also considered; the BS receiving the pre-scheduling result of each cooperative cell in the cooperative set and summarizing the pre-scheduling result to judge whether the summarized pre-scheduling result meets a preset iteration ending condition or not; if the preset iteration ending condition is not met, the relay BS taking the summarized pre-scheduling result as a new iteration parameter, sending a re-scheduling indication information which carries the summarized scheduling result to each cooperative BS, indicating it to re-calculate a new scheduling scheme to obtain a new pre-scheduling result based on said strategy and sending the new pre-scheduling result to the relay BS; the relay BS summarizing the new pre-scheduling result to judge whether the summarized new pre-scheduling result meets the preset iteration ending condition; if the preset iteration ending condition is met, each cooperative cell taking its present pre-scheduling result as its last scheduling result for coordinated scheduling respectively; wherein, the initial scheduling result and pre-scheduling result comprise one or more scheduled users in each cooperative cell and related information of space-time and/or stream thereof; the iteration ending condition is: the summarized pre-scheduling result being the same as the iteration parameter, or a number of times for iteration pre-scheduling being reached, or the cooperative set reaching a performance threshold.