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Method and apparatus for performing cell search in wireless communication system

  • US 10,673,671 B2
  • Filed: 09/02/2016
  • Issued: 06/02/2020
  • Est. Priority Date: 09/02/2015
  • Status: Active Grant
First Claim
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1. A method performed by a narrowband user equipment (NB UE) in a wireless communication system, the method comprising:

  • receiving, from a network, frequency information including a fixed frequency offset and a channel raster,wherein the frequency information is transmitted via a primary synchronization signal (PSS) or a secondary synchronization signal (SSS);

    performing a cell search at a first frequency which is located apart from a specific frequency by the fixed frequency offset; and

    receiving a physical broadcast channel (PBCH) on a second frequency which is located apart from the first frequency by the channel raster such that the second frequency is located apart from the specific frequency by frequency amount equal to the sum of the fixed frequency offset and the channel raster,wherein the fixed frequency offset is 7.5 kHz and the channel raster is a multiple of 90 kHz, andwherein a bandwidth less than 1.4 MHz is allocated to the NB UE.

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