| 摘要 |
Methods and apparatus are disclosed for generating and exchanging codeboo ks in a multiple access wireless communication system, such as Space Divisio n Multiple Access (SDMA). The codebooks include a plurality of preferred pre coding matrices. The codebooks are generated at an access network. Generatin g a codebook may further include generating a codebook identifier assigned b y the access network. The codebooks are communicated to access terminals. Co mmunicating the codebooks may further include querying the access terminals to determine an identity of codebooks currently stored at each access termin al, receiving a codebook status response from each of the access terminals i ndicating the identity of codebooks stored at each of the access terminals. The codebooks may also be assigned to access terminals for a predetermined s ector in the active set of communication links. Generating a codebook may fu rther include generating a codebook that includes identification of clusters . The clusters identify a set of the precoding matrices and, as such, a set of beams in the cluster. Thus, the clusters may identify a starting beam ind ex and an ending beam index. The codebook may further include an overlap clu ster map that indicates clusters authorized to potentially overlap. |
