Patent ID: 8154982

Claim:
An apparatus for dynamically assigning orthogonal codes to different information signals communicated between a radio base station and a user terminal in a cellular radio communication system in which a number of codes are allocated for dedicated transport channels (DCHs) and a number of codes are allocated for high speed downlink shared channels (HS-DSCHs), and a radio network controller allocates codes for HS-DSCH physical channels (HS-PDSCH codes) to the radio base station, said apparatus comprising: discretionary code allocation means within the radio base station, said discretionary code allocation means allocating and de-allocating additional HS-PDSCH codes from unused codes that were not allocated by the radio network controller, in addition to the HS-PDSCH codes that were allocated by the radio network controller, without communicating with the radio network controller, in addition to a minimum number of HS-PDSCH codes; and wherein the discretionary code allocation means treats the HS-PDSCH codes allocated by the radio network controller as the minimum number of HS-PDSCH codes.