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Method for providing a buffer status report in a mobile communication network

  • US 20090113086A1
  • Filed: 10/28/2008
  • Published: 04/30/2009
  • Est. Priority Date: 10/29/2007
  • Status: Active Grant
First Claim
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1. A method for providing a buffer status report in a mobile communication network, which is implemented between a base station and one or more user equipments for providing the user equipments to report buffer status of the user equipments to the base station, wherein each user equipment has multiple logical channels divided into a plurality of logical channel groups, each logical channel group corresponds to a buffer and a buffer status of the buffer, and each logical channel has a priority, the method comprising the steps of:

  • (A) having an arrival data to a buffer of the user equipment and the priority of a logical channel for the arrival data being higher than those of other logical channels for existing data in the buffers;

    (B) triggering a short buffer status report associated with the buffer of a logical channel group corresponding to the arrival data;

    (C) using the user equipment to calculate available space of a Protocol Data Unit (PDU) to be transmitted based on resources allocated by the base station to thereby determine whether the available space of the PDU to be transmitted is enough for filling all data of the buffer of the logical channel group corresponding to the arrival data;

    (D) canceling the short buffer status report when all data of the buffer of the logical channel group corresponding to the arrival data can be completely filled in the PDU to be transmitted; and

    (E) using the user equipment to transmit the short buffer status report when all data of the buffer of the logical channel group corresponding to the arrival data can not be completely filled in the PDU to be transmitted.

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