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Method for generating and transmitting optimal cell id code

A generation method and cell technology, which are applied to communication between multiple stations, diversity/multi-antenna systems, location diversity and other directions, and can solve problems such as the reduction of cell ID code error correction efficiency

Inactive Publication Date: 2005-03-16
LG ELECTRONICS INC
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  • Summary
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AI Technical Summary

Problems solved by technology

That is to say, in the case of using the long code for the 2-bit FBI, the minimum Hamming code distance of the ID code is reduced due to puncturing the bit, causing the error correction efficiency of the cell ID code to decrease

Method used

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  • Method for generating and transmitting optimal cell id code
  • Method for generating and transmitting optimal cell id code
  • Method for generating and transmitting optimal cell id code

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Embodiment Construction

[0083] Preferred embodiments of the present invention will now be described in detail with reference to the following drawings.

[0084] The cell ID code generating method according to the present invention only handles the long ID code for 2-bit FBI. Meanwhile, the long, medium and short ID codes for 1-bit FBI, and the medium and short ID codes for 2-bit FBI explained in the background art can be produced together with the long ID code for 2-bit FBI according to the present invention use. Except for this long ID code generation scheme for 2-bit FBI, the combination of the known ID code generation scheme with the present invention will be omitted for the sake of explanation.

[0085] Usually, the temporary cell ID codes used for the SSDT are generated by using Hadamard codes. The temporary cell ID code is generated by a network (that is, an RNC (Radio Network Controller)), and sent to the cell (base station) and the terminal.

[0086] In the present invention, this temporar...

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Abstract

A method for generating and transmitting a cell ID code for cell recognition is disclosed. The first 16-bit cell ID codes for 2-bit FBI field are generated from 16-bit Hadamard codes, and the first and ninth bits of the Hadamard codes are punctured, to thereby generate the second 14-bit cell ID code for the 2-bit FBI field. The puncturing is performed by a network or a terminal.

Description

technical field [0001] The present invention relates to mobile communication, in particular to a method for generating and sending the best cell ID code for Site Selective Diversity Transmission (SSDT) ​​in the third generation mobile communication. Background technique [0002] In general, Code Division Multiple Access (CDMA) systems are known to be interference limited, requiring power control to resolve near-far problems and slow gradual fading. [0003] In addition, CDMA-based third-generation mobile communication systems such as Universal Mobile Telecommunications System (UMTS) employ fast power control in order to increase system capacity by the user by compensating for radio channel variations due to multipath fading. In fast power control, the user equipment (UE) needs to measure the signal-to-interference ratio (SIR), compare it with a target SIR, and send a transmit power control (TPC) command consisting of one or more bits to the base station (community). When r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/26H04B7/02H04W8/26H04W36/00
CPCH04B7/022H04W8/26H04W36/18H04W24/02
Inventor 金奉会
Owner LG ELECTRONICS INC
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