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Adaptive UL-DL TDD configurations in a heterogeneous network

  • US 9,119,097 B2
  • Filed: 01/04/2013
  • Issued: 08/25/2015
  • Est. Priority Date: 04/13/2012
  • Status: Active Grant
First Claim
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1. A method for adapting uplink-downlink (UL-DL) time-division duplexing (TDD) subframe configurations in a heterogeneous network (HetNet), said method comprising:

  • calculating a preferred adaptive UL-DL configuration;

    receiving, at a reference enhanced Node B (eNB), node configuration information for at least one neighboring node;

    reconfiguring an adaptive UL-DL configuration for at least one of the reference eNB and the at least one neighboring node to correspond with the preferred adaptive UL-DL configuration, the adaptive UL-DL configuration being reconfigured based on the node configuration information and sounding reference signal (SRS) subframe scheduling of the reference eNB and the at least one neighboring node;

    sending, from the reference eNB, the adaptive UL-DL reconfiguration to the at least one neighboring node; and

    scheduling UL data, DL data, and SRS transmissions at the reference eNB based on the adaptive UL-DL reconfiguration.

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