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Compressed system information for link budget limited UEs in a radio access network

  • US 10,412,721 B2
  • Filed: 12/19/2017
  • Issued: 09/10/2019
  • Est. Priority Date: 11/21/2014
  • Status: Active Grant
First Claim
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1. A base station apparatus, comprising:

  • at least one antenna;

    at least one radio, wherein the at least one radio is configured to perform cellular communication using at least one radio access technology (RAT); and

    one or more processors coupled to the at least one radio;

    wherein the base station is configured to;

    determine a first transport block size for a first system information (SI) message, the first SI message comprising one or more first system information blocks (SIBs);

    broadcast the first SI message using the first transport block size;

    determine a second transport block size for a second SI message, the second SI message comprising one or more second SIBs that include at least one field that is also included in the first SIBs, wherein the second SIBs are usable by a class of user equipment devices (UEs) having a limited link budget to determine access parameters for the base station, where the second transport block size is smaller than the first transport block size and wherein the first transport block size is greater than a threshold transport block size supported by the class of UEs having a limited link budget; and

    broadcast the second SI message using the second transport block size.

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