Patent ID: 7680078
Filing Date: 2010-03-16
Classification: H04W

Abstract:
1. A method of transmitting comprising: receiving over an uplink, a mobile station velocity as estimated at the mobile station; learning knowledge about a downlink channel based on a received signal over an uplink channel, the received signal indicating the mobile station velocity; estimating an obsoleteness rate of the knowledge of the downlink channel; classifying the mobile station as “fast” or “slow” based on the estimated obsoleteness rate; allocating a Maximum-Ratio-Combining beam forming scheme to a first mobile station classified as “fast”; and allocating a Space Division Multiple Access (SDMA) beam forming scheme to a second mobile station classified as “slow”; and scheduling data transmissions over the downlink channel by allocating resources to the mobile station based on the estimated obsoleteness rate of the knowledge of the downlink channel, wherein the resources include at least one of: the Maximum-Ratio-Combining beam forming scheme, the SDMA beam forming scheme, a time slot, a frequency band, a coding rate and a modulation scheme.