Method for code re-allocation in telecommunication systems,...

Details Method for code re-allocation in telecommunication systems,... Method for code re-allocation in telecommunication systems,...

2008-07-08

2008-07-08

Le, Danh C. (Department: 2617)

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

C370S335000, C370S208000, C455S452200

Reexamination Certificate

active

10499235

ABSTRACT:
In a code division multiple access transmission system (CDMA), codes are generated according to a tree structure organized on a plurality of layers. Each re-allocation is considered as an access request to the system by a new user and the re-allocation codes are transmitted to each involved user through the respective re-allocation messages. Re-allocation messages to users having the same spreading factor (SF), and hence the same service bit-rate (kR) are substantially sent simultaneously, in order to reduce to a minimum the time required for the re-allocation operation.

REFERENCES:
patent: 6163524 (2000-12-01), Magnusson
patent: 2003/0067961 (2003-04-01), Hudson et al.
patent: WO 00/24146 (2000-04-01), None
patent: WO 00/42723 (2000-07-01), None
XP-000998091 mINN t.; Dynamic Assignment of Orthogonal variable Spreading factor Codes in W-CDMA, IEEE Journal.
Dynamic Assignment of Orthogonal Variable-Spreading-Factor . . . by Thit Minn et al. (IEEE No. 8, 2000).
System Specification. Radio Resource Management . . . by P. Goria et al. (Report dated Apr. 2001).
Technical Specification 3rd Generation Partnership Project:. . . (released 1999), Jun. 2001.

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