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Apparatus and methods for relay-assisted uplink communication

  • US 8,934,400 B2
  • Filed: 02/22/2013
  • Issued: 01/13/2015
  • Est. Priority Date: 02/22/2013
  • Status: Expired due to Fees
First Claim
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1. A terminal device arranged to communicate with a base station via a relay device in a wireless communications system, the terminal device comprising:

  • a transmitter arranged to transmit an access request message to the base station wherein the access request message comprises one from a set of access preambles that indicate relay device uplink assistance is required;

    a receiver arranged to receive an access request grant response from the base station; and

    a control processor operably coupled to the transmitter and receiver and arranged to;

    process the access request grant response;

    extract transmit power control information therefrom for transmissions to the relay device;

    map a first power level indicated in the transmit power control information to a second power level associated with a transmission via the relay device; and

    generate and transmit a transmission to the relay device at the mapped transmit second power level.

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