Method and apparatus for one cell operation with fast small cell handover in wireless communication system

Method and apparatus for one cell operation with fast small cell handover in wireless communication system

  • CN 104,904,271 B
  • Filed: 12/27/2013
  • Issued: 06/05/2020
  • Est. Priority Date: 12/27/2012
  • Status: Active Grant
First Claim
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1. A method of supporting fast sub-cell handover by a sub-cell included in macro coverage in a wireless communication system, the macro coverage including a plurality of sub-cells distinguished based on a Virtual Cell Identifier (VCID) or a scrambling Identifier (ID), the method comprising:

  • receiving a plurality of pieces of feedback information on a plurality of sub-cells from a User Equipment (UE), the feedback information including a Channel Quality Indicator (CQI), a Precoding Matrix Index (PMI), and a Rank Indicator (RI);

    extracting channel quality indicators from the received pieces of feedback information, respectively;

    comparing the extracted channel quality indicator values; and

    determining whether to perform fast sub-cell switching of the UE based on whether a channel quality indicator having a maximum value among the extracted channel quality indicators is a channel quality indicator of a serving sub-cell of the UE according to a result of the comparison,maintaining the serving sub-cell of the UE when a channel quality indicator having a maximum value among the extracted channel quality indicators is determined as a channel quality indicator of the serving sub-cell, anPerforming handover of the sub-cell of the UE to the sub-cell having the largest channel quality indicator when the channel quality indicator having the largest value among the extracted channel quality indicators is determined not to be the channel quality indicator of the serving sub-cell of the UE.

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