Method and system for frequency reuse in wireless relay scenario

摘要

The disclosure provides a method for frequency reuse in a wireless relay scenario, wherein a center frequency spectrum, an edge frequency spectrum and a random access frequency spectrum are pre-allocated to a cell according to a scenario parameter in the cell; load conditions of all mobile stations (MSs) covered by each relay station (RS) in the cell is calculated and reported to a base station (BS); the BS allocates the random access frequency spectrum to an RS according to load conditions of all RSs and schedules MSs. The disclosure also provides a system for frequency reuse in a wireless relay scenario. With the method and system above, the frequency spectrum planning is configurable, the random access frequency spectrum is introduced, and both the load balancing and user fairness are taken into consideration, which improves the throughput at the edge of the cell, especially can increase the throughput for the users whose throughput ranks poorly.

主权项

1. A method for frequency reuse in a wireless relay scenario, comprising:
a base station, BS, pre-allocating a center frequency spectrum, an edge frequency spectrum and a random access frequency spectrum to a cell according to a scenario parameter in the cell; a relay station, RS, calculating load conditions of all mobile stations, MSs, covered by each RS in the cell and reporting the load conditions to the BS; the BS allocating the random access frequency spectrum to an RS according to load conditions of all RSs and scheduling an MS; wherein the pre-allocated center frequency spectrum is the frequency spectrum that is used for data transmission of a direct link from the BS to the MS within the coverage of the cell, the edge frequency spectrum is the frequency spectrum that is used for data transmission of a reverse link from the BS to the RS and a access link from the RS to the MS at the cell edge, the rest of the frequency spectrums are the random access frequency spectrum; wherein the scenario parameter in the cell comprises: the number of the RSs in the cell, positions of the RSs in the cell, a frame type of the cell, and statistic characteristics of users of the cell.