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UPLINK POWER CONTROL IN ADAPTIVELY CONFIGURED TDD COMMUNICATION SYSTEMS

  • US 20160095124A1
  • Filed: 12/08/2015
  • Published: 03/31/2016
  • Est. Priority Date: 03/18/2013
  • Status: Active Grant
First Claim
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1. A method comprising:

  • transmitting, by a base station to a User Equipment (UE);

    first signaling indicating a first Time Division Duplexing (TDD) UpLink-DownLink (UL-DL) configuration, from a set of TDD UL-DL configurations, wherein a TDD UL-DL configuration is defined over a time period of ten SubFrames (SFs) that comprise DL SFs where a communication direction is from the base station to the UE, UL SFs where a communication direction is from the UE to the base station, and special SFs where a communication direction can be both from the base station to the UE and from the UE to the base station, and wherein each SF of the ten SFs has a unique time domain index;

    first configuration information for communication using adapted TDD UL-DL configurations, wherein a valid adapted TDD UL-DL configuration is from a subset of the set of TDD UL-DL configurations, wherein a number of UL or special SFs in the first TDD UL-DL configuration are DL SFs in an adapted TDD UL-DL configuration, and wherein at least one UL SF in the first TDD UL-DL configuration remains UL SF in any TDD UL-DL configuration from the subset of the set of TDD UL-DL configurations;

    second configuration information for;

    a first set of parameters associated with a first UL Power Control (PC) process,a second set of parameters associated with a second UL PC process, anda bit-map defining a one-to-one mapping between a subset of predetermined SFs, in any TDD UL-DL configuration from the set of TDD UL-DL configurations, and a first set of SFs and a second set of SFs, wherein a binary value of ‘

    0’

    associates a SF with the first set of SFs and a binary value of ‘

    1’

    associates a SF with the second set of SFs, and wherein the first set of SFs includes all SFs that are UL SFs in every TDD UL-DL configuration from the subset of the set of TDD UL-DL configurations and the second set of SFs includes at least one SF that is a DL SF in at least one TDD UL-DL configuration from the subset of the set of TDD UL-DL configurations; and

    second signaling indicating the UE to transmit a Physical UL Shared CHannel (PUSCH) or a Sounding Reference Signal (SRS) in an UL SF of the adapted TDD UL-DL configuration;

    wherein in response to receiving the first signaling, the first configuration information, the second configuration information, and the second signaling, the UE transmits the PUSCH or SRS in the UL SF with a power determined according to the first UL PC process if the UL SF is in the first set of SFs or with a power determined according to the second UL PC process if the UL SF is in the second set of SFs.

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