Patent ID: 8290500
Filing Date: 2012-10-16
Classification: H04W

Abstract:
1. Method in a base station for computing a delay time parameter of data comprised in a buffer of a terminal, the base station and the terminal are comprised within a wireless communication system, the terminal buffer is arranged to comprise frames, and the frames comprise data, the method comprises the steps of: determining a service requested by the terminal; estimating an arrival time of the last frame of data to be received from the buffer of the terminal; estimating a number of frames comprised in the buffer of the terminal; establishing a frame interval according to the determined service; and estimating the arrival time of the oldest frame in the terminal buffer by subtracting, from the estimate of the arrival time of the last frame of data, one established frame interval for each of the number of frames estimated to be comprised in the buffer of the terminal, additional to the oldest frame, wherein the step of estimating the number of frames comprised in the buffer of the terminal comprises: estimating a size of the terminal buffer; estimating a size of a frame to be received from the terminal; dividing the estimate of the size of the terminal buffer by the estimate of the size of the frame to generate a result value; and selecting the result value as an estimate of the number of frames comprised in the terminal buffer in response to the result value being an integer, and, when the result value is not an integer, rounding up the result value to the next integer and selecting the rounded up result value as an estimate of the number of frames comprised in the terminal buffer.