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SYSTEMS AND METHODS TO COORDINATE TRANSMISSIONS IN DISTRIBUTED WIRELESS SYSTEMS VIA USER CLUSTERING

  • US 20110044193A1
  • Filed: 11/01/2010
  • Published: 02/24/2011
  • Est. Priority Date: 04/02/2004
  • Status: Active Grant
First Claim
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18. A system for coordinating transmissions in distributed wireless systems comprising:

  • a plurality of wireless users;

    a plurality of base transceiver stations (BTSs) having a plurality of antennas for establishing multiple concurrent distributed-input distributed-output (DIDO) communication channels with the plurality of users;

    wherein either the BTSs and/or the wireless users measure link quality of the communication channels therebetween and use the link quality measurements to define a user cluster;

    the BTSs and/or the wireless users further measuring channel state information (CSI) between each user and each DIDO antenna within a defined user cluster and precoding data transmissions between the DIDO antennas within the user cluster and the users reachable by those DIDO antennas based on the measured CSI.

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