Patent ID: 8149792
Filing Date: 2012-04-03
Classification: H04J,H04W

Abstract:
1. A method of operating a radio access network comprising a radio network controller node and a base station node, the method comprising: maintaining a code tree of spreading codes that are allocatable between high speed downlink shared channels (HS-DSCH) and dedicated channels (DCH); allocating an initial number of spreading codes for use by the HS-DSCH channels and, for a remaining number of spreading codes: allocating the spreading codes to HS-DSCH channels in a first direction across the code tree; allocating the spreading codes to DCH channels in a second direction across the code tree; monitoring use of the spreading codes of the code tree for determining free spreading codes which are non-adjacent to a spreading code allocated to the HS-DSCH channels; and allocating a free non-adjacent spreading code to an HS-DSCH channel.