Spatial multiplexing in a cellular network

摘要

The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required. The combiner combines the estimated substreams into a corresponding subscriber datastream.

主权项

1. A base station of a wireless network for transmitting subscriber datastreams to corresponding ones among a plurality of remote stations located within the network, the base station comprising:
spatially separate transmitters to transmit selected substreams of each subscriber datastream to corresponding ones among the plurality of remote stations on an assigned channel of a multiple access protocol; logic to assign an available channel on which to transmit each subscriber datastream; a mobility detector to determine a mobility of each of the plurality of remote stations and to generate a mobility signal; and a training module responsive to the mobility signal for varying at least one of an injection interval and a duration of a training sequence into the transmissions of the spatially separable transmitters.