Granted Patent B2

US 8,774,099 · App. 11/446,264 · Granted Jul 8, 2014

Abstract

Claims (29)

1. A method for allocating HS-DSCH channelisation codes in a WCDMA based wireless communication system using HSDPA and having a total number of N HS-DSCH channelisation codes, whereby

a) a radio network controller allocates M<=N HS-DSCH channelisation codes for a node B such that the node B can serve user equipments, the M channelisation codes defining the minimum code set,

b) the node B identifies which of the N-M channelisation codes are currently unused for transmissions,

c) the node B autonomously allocates at least one of the unused channelisation codes for servicing UE's.

2. The method according to claim 1 , wherein the system is a WCDMA system, in particular a WCDMA system operating in the UTRA/FDD mode, or a CDMA 2000 system.

3. The method according to claim 1 , wherein the system is providing HSDPA according to the standard 3GPP Release 5 or beyond.

4. The method according to claim 1 , wherein the channelisation codes are OVSF codes whereby the OVSF codes C SF,i have an index SF representing the spreading factor and a second index i being an integer number, and that the OVSF codes of the N-M channelisation codes form a contiguous code set with respect to the second index i.

5. The method according to claim 1 , wherein for channelisation codes C SF,1 , C SF,2 , C SF,3 , . . . , C SF,SF-1 of a code tree with SF being the spreading factor

a) the codes C SF,SF-1 . . . C SF,SF-M are chosen for the minimum HS-DSCH code set,

b) the codes C SF,SF-1-M . . . C SF,SF-N are chosen for the extended code set,

c) the codes C SF,SF-1-N . . . C SF,SF-k are chosen for DCH and HS-SCCH channels,

d) the codes C SF,SF-1-k . . . C SF,0 are chosen for common channels, whereby M,N and k are integers.

6. The method according to claim 1 , wherein it is at least partially carried out by means of a computer program.

7. A computer program product, the computer program product comprising a computer readable medium, having thereon computer program code means, when said program is loaded, to make the computer executable for executing a method for allocating HS-DSCH channelisation codes in a WCDMA based wireless communication system using HSDPA and having a total number of N HS-DSCH channelisation codes, whereby

a) a radio network controller allocates M<=N HS-DSCH channelisation codes for a node B such that the node B can serve user equipments, the M channelisation codes defining the minimum code set,

b) the node B identifies which of the N-M channelisation codes are currently unused for transmissions,

c) the node B autonomously allocates at least one of the unused channelisation codes for servicing UE's.

8. A node B adapted to operate according to the WCDMA standard, and comprising a computer program product comprising a computer readable medium, having thereon computer program code means, when said program is loaded, to make the computer executable for executing a method for allocating HS-DSCH channelisation codes in a WCDMA based wireless communication system using HSDPA and having a total number of N HS-DSCH channelisation codes, whereby

a) a radio network controller allocates M<=N HS-DSCH channelisation codes for a node B such that the node B can serve user equipments, the M channelisation codes defining the minimum code set,

b) the node B identifies which of the N-M channelisation codes are currently unused for transmissions,

c) the node B autonomously allocates at least one of the unused channelisation codes for servicing UE's.

9. A method for allocating HS-DSCH channelisation codes in a WCDMA based wireless communication system using HSDPA and having a total number of N HS-DSCH channelisation codes, whereby

a) the radio network controller allocating a set of M channelisation codes from a set of N HS-DSCH channelisation codes, wherein M<N, the M channelisation codes defining a minimum code set and the M channelisation codes being allocated for a node B such that the node B can serve user equipments and a remaining set of N-M channelisation codes being unallocated by the radio network controller,

b) the node B identifying which of the N-M channelisation codes, which were unallocated by the radio network controller, are currently unused for transmissions; and

c) the node B autonomously allocating at least one of the unused channelisation codes for servicing UE's.

10. A method for allocating HS-DSCH channelisation codes for a WCDMA based wireless communication system using HSDPA and having a total number of N HS-DSCH channelisation codes, whereby

a) a radio network controller allocates M not greater than N HS-DSCH channelisation codes for a node B such that the node B can serve user equipments, the M channelisation codes defining the minimum code set, the radio network controller signalling the HS-DSCH channelisation codes to the node B,

b) the node B identifies which of the N-M channelisation codes are currently unused for transmissions; and

c) the node B autonomously allocates at least one of the unused channelisation codes for servicing UE's.

Assignments (8)