Patent ID: 8134945
Filing Date: 2012-03-13
Classification: H04B

Abstract:
1. A method for increasing cell capacity through optional signal combining between Relay Stations (RSs) in a cellular system using wired RSs, the method comprising: receiving, by a Base Station (BS), an average Carrier-to-Interference ratio (C/I) value of transmission signals from Mobile Stations (MSs) located inside each coverage area, being fed back from the RSs or the MSs in its corresponding cell; classifying the MSs into two groups according to the C/I value; performing resource allocation satisfying a minimum data rate from a corresponding RS, for MSs belonging to a group having a C/I value greater than a preset threshold .GAMMA. among the classified groups; performing resource allocation by applying an optional signal combining scheme taking into account a combination of two RSs having a highest C/I value, for MSs belonging to a group having a C/I value below the threshold among the classified groups by; applying signal combining of the RS with the highest C/I value and the RS with the second highest C/I value, if α×C allocating all unallocated subchannels of each individual RS in an order of an MS having a high C/I value among MSs of a corresponding RS until there is no more unallocated subchannel of each RS.