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Wireless communication system and base station

  • US 20070086379A1
  • Filed: 06/28/2006
  • Published: 04/19/2007
  • Est. Priority Date: 10/13/2005
  • Status: Active Grant
First Claim
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1. A base station in a wireless communication system comprising the base station to communicate with a terminal by wireless and by time division multiplexing, and a node to perform best effort communication and QoS communication with the terminal through the base station, wherein the base station comprises:

  • a requested bandwidth storage part in which a first requested bandwidth requested by one or plurality of first terminals during QoS communication and a second requested bandwidth requested by a second terminal trying to perform QoS communication are stored for each terminal;

    a data rate reception management part that receives a data amount which the first and the second terminal can receive in each time slot from the terminals, which depends on changing the data amount stored in each time slot according to wireless environment, calculates a first and a second data rates which the first and the second terminals can receive by obtaining a time average value of the data amount for each terminal, and stores the data rates for each terminal; and

    a control part to control the base station, and wherein the control part obtains a wireless resource available rate, based on a first requested bandwidth Bi which is stored in the requested bandwidth storage part and is requested by the first terminal i, and a first data rate Ri which the first terminal i can receive and which is stored in the data rate reception management part, by a following expression;

    1-

    i


    BiRi
    the control part obtains a wireless resource usage rate of the second terminal necessary to ensure the second requested bandwidth B, by dividing the second requested bandwidth B which is stored in the requested bandwidth storage part and is requested by the second terminal by the second data rate R which the second terminal can receive and which is stored in the data rate reception management part, and the control part transmits, with respect to the second terminal in which the wireless resource available rate is equal to or more than the wireless resource usage rate, a connection establishment request for QoS, for performing QoS communication between the second terminal and the node, to the node.

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