US Patent No. 9,236,921


Patent No. 9,236,921
Issue Date January 12, 2016 
Title Method And Apparatus For Implementing Multi-cell Precoding
Inventorship Wei Wei, Shenzhen (CN)
Assignee ZTE Corporation, Shenzhen, Guangdong Province (CN)

Claim of US Patent No. 9,236,921

1. A method for implementing multi-cell precoding, comprising:
clustering multiple cells of a cellular network;
dividing users into center users of a cluster of multiple cells and edge users of the cluster according to locations of the
users in the cluster;

introducing a collaborative distance, which indicates an interval of a cluster of multiple cells from an inner edge of the
cluster to an outer edge the cluster;

proving that a Nash equilibrium point exists and is unique based on a utility function and a game theory principle, and obtaining
the collaborative distance

Dc=f(Ratemin,Rateeff), so as to schedule the users;

wherein Ratemin is an average minimum rate of users in the cluster, Rateeff is an effective rate:

wherein Ratek refers to a theoretical rate of each user in the cluster, Nc,k(Dc) refers to user collaboration between the cluster in which a user k is located and Nc adjacent clusters of multiple cells, K is the total number of users in the cluster;

and processing the divided center users and edge users by adopting different precoding methods.