Patent ID: 8693410
Filing Date: 2014-04-08
Classification: H04L

Abstract:
1. A method of allocating hybrid bursts by a base station to one or more terminals in a wireless communication system, the method comprising: (b) sequentially allocating bursts, which are mapped along a time axis for upstream data transmission, to the respective terminals, wherein operation (b) comprises: (b1) dividing a data burst region of an upstream subframe into a plurality of zones determined by a frequency domain and a time domain; (b2) selecting a zone corresponding to terminal attributes from among the plurality of zones; and (b3) sequentially allocating bursts, which are mapped along the time axis in the selected zone to the respective terminals, wherein operation (b1) comprises dividing the data burst region of the upstream subframe into a first zone comprising all symbols of the data burst region of the upstream subframe and a remaining portion other than the first zone, and dividing the remaining portion other than the first zone into a second zone and a third zone in the time domain, wherein operation (b2) comprises selecting the first zone for a power sensitive terminal in order to maximize transmission power, and selecting the second zone for a latency sensitive terminal requiring a quick response, and wherein the second zone for a latency sensitive terminal requiring a quick response has a width that is a predetermined number of symbols that is less than a total number of symbols in the data burst region and is at a beginning of the time axis of the data burst region in order to allow additional time to prepare response, and wherein operation (b3) comprises sequentially allocating bursts that are located in the first zone and that are each mapped across the entire width of the data burst region to the power sensitive terminal when the first zone is selected, allocating bursts in the second zone to the latency sensitive terminal when the second zone is selected, and allocating bursts in the third zone when the third zone is selected, wherein operation (b3) further comprises allocating bursts located in the first zone to a power-limited terminal that is located at a cell boundary and does not permit line-of-sight propagation in order to maximize transmission power; allocating bursts located in the second zone to a terminal that requires a quick response in a downstream subframe of a next frame in order to minimize decoding latency till delivering to MAC; and allocating bursts located in the third zone to a terminal that is located at a cell boundary and permits line-of-sight propagation and does not have sufficient time to shift form a reception mode to a transmission mode within a transmission (Tx) to reception (Rx) transition gap (TTG) in order for the terminal to get enough time through scheduling.