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Interference management for dynamic uplink and downlink configuration

  • US 9,775,149 B2
  • Filed: 10/29/2015
  • Issued: 09/26/2017
  • Est. Priority Date: 01/27/2012
  • Status: Active Grant
First Claim
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1. A method for managing interference to facilitate allocation of a dynamic uplink and downlink ratio configuration, the method comprising:

  • determining, for a first cell associated with an enhanced node B (eNodeB) or a low power node (LPN), whether the first cell causes interference less than a pre-determined threshold level to one or more neighboring cells or whether flexible subframes of radio frames associated with the one or more neighboring cells operate as downlink subframes; and

    in response to the determining condition being met, allocating a first flexible subframe of a first radio frame associated with the first cell to operate as a downlink subframe at normal transmit power level, wherein the first flexible subframe comprises a pre-defined subframe of the first radio frame corresponding to the dynamic uplink and downlink ratio configuration;

    determining, by the eNB or LPN for the first cell, whether second flexible subframes of radio frames associated with the one or more neighboring cells operate as downlink subframes; and

    in response to the determining condition not being met, allocating, by processing circuitry of the eNB or LPN, a second flexible subframe of a second radio frame associated with the first cell to operate as an uplink subframe, wherein the second flexible subframe comprises the pre-defined subframe of the second radio frame corresponding to the dynamic uplink and downlink ratio configuration.

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