Techniques for downlink coordinated multi-point (CoMP) communications using unlicensed radio frequency spectrum band
First Claim
1. A method for wireless communications by a base station of a coordinated multi-point (CoMP) cooperating set of base stations in a wireless communications network, the method comprising:
- performing a clear channel assessment (CCA) procedure to contend for access to an unlicensed radio frequency spectrum band;
determining a CCA status that indicates whether access to the unlicensed radio frequency spectrum band has been won for a time period;
communicating the CCA status to one or more other base stations in the CoMP cooperating set; and
initiating CoMP communications with a user equipment (UE) using one or more base stations in the CoMP cooperating set that have a CCA status of winning access to the unlicensed radio frequency spectrum band for the time period.
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Abstract
Techniques are described for downlink coordinated multi-point (CoMP) procedures for access to a contention-based radio frequency spectrum band. A base station performs a contention procedure, such as a clear channel assessment (CCA) procedure, for access to the radio frequency spectrum band. The base station determines whether contention has been won for a time period, and communicates whether or not contention has been won to other base stations in a CoMP cooperating set. Based on the information exchanged between base stations in the CoMP cooperating set, coordinated communications is initiated to a UE with two or more of the base stations in the CoMP cooperating set.
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Citations
26 Claims
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1. A method for wireless communications by a base station of a coordinated multi-point (CoMP) cooperating set of base stations in a wireless communications network, the method comprising:
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performing a clear channel assessment (CCA) procedure to contend for access to an unlicensed radio frequency spectrum band; determining a CCA status that indicates whether access to the unlicensed radio frequency spectrum band has been won for a time period; communicating the CCA status to one or more other base stations in the CoMP cooperating set; and initiating CoMP communications with a user equipment (UE) using one or more base stations in the CoMP cooperating set that have a CCA status of winning access to the unlicensed radio frequency spectrum band for the time period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An apparatus for wireless communications by a base station of a coordinated multi-point (CoMP) cooperating set of base stations in a wireless communications network, comprising:
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means for performing a clear channel assessment (CCA) procedure to contend for access to an unlicensed radio frequency spectrum band; means for determining a CCA status that indicates whether access to the unlicensed radio frequency spectrum band has been won for a time period; means for communicating the CCA status to one or more other base stations in the CoMP cooperating set; and means for initiating CoMP communications with a user equipment (UE) using one or more base stations in the CoMP cooperating set that have a CCA status of winning access to the unlicensed radio frequency spectrum band for the time period. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. An apparatus for wireless communications by a base station of a coordinated multi-point (CoMP) cooperating set of base stations in a wireless communications network, comprising:
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a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to cause the apparatus to; perform a clear channel assessment (CCA) procedure to contend for access to an unlicensed radio frequency spectrum band; determine a CCA status that indicates whether access to the unlicensed radio frequency spectrum band has been won for a time period; communicate the CCA status to one or more other base stations in the CoMP cooperating set; and initiate CoMP communications with a user equipment (UE) using one or more base stations in the CoMP cooperating set that have a CCA status of winning access to the unlicensed radio frequency spectrum band for the time period.
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Specification