Patent ID: 8638734
Filing Date: 2014-01-28
Classification: H04W

Abstract:
1. A method of communicating between a primary station and a secondary station over two random access channels of different types, the method comprising: signaling a first type random access channel having a first resource set; signaling a second type random access channel having a second resource set different from the first resource set; wherein the difference between the first and the second resource sets comprises a difference between at least one resource in the first resource set and at least one resource in the second resource set, wherein the first and second resource sets comprise at least one of: scrambling code and signature set and sub-channel or scrambling code and signature set or scrambling code and sub-channel or signature set and sub-channel; wherein the second resource set available for the second type random access channel comprise at least a portion of those resources not available for the first type random access channel out of a predetermined larger set; and wherein the second resource set available for the second type random access channel are obtained by inverting a bit-map describing the first resource set available for the first type random access channel.