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Systems and methods for generating a discovery signal in a device-to-device or network communication

  • US 9,203,568 B2
  • Filed: 09/27/2013
  • Issued: 12/01/2015
  • Est. Priority Date: 01/17/2013
  • Status: Expired due to Fees
First Claim
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1. A user equipment (UE) for use in device-to-device or network communication, comprising:

  • a processing unit; and

    a memory coupled with the processing unit, the memory storing instructions, which when executed by the processor cause the processor to;

    generate a plurality of multiple access symbols for transmission on a physical channel, wherein, to generate the plurality of multiple access symbols, the instructions cause the processor to;

    multiply a modulation symbol with a first sequence to generate a second sequence;

    apply a series of cyclic shifts to the second sequence to generate a plurality of shifted sequences;

    apply at least one orthogonal code cover (OCC) of total length N to the plurality of shifted sequences;

    map the orthogonal shifted sequences onto subcarriers of a plurality of physical resource blocks (PRBs) of the physical channel; and

    wherein to facilitate a multiplexing function of the device-to-device or network communication, the processing unit increases at least one of;

    the number of cyclic shifts, the total length of the at least one OCC, or the number of PRBs available; and

    transmit the plurality of multiple access symbols on the physical channel.

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