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Method and system for transmitting multi-cell/sector broadcast information

A broadcast information and multi-cell technology, applied in the field of communication, can solve problems affecting cell/sector coverage efficiency, user interference, and affecting cell/sector broadcast channel reception, so as to improve coverage efficiency, reduce interference, and improve receiving performance Effect

Inactive Publication Date: 2007-09-26
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In the above scheme, the broadcast information of the current cell / sector will interfere with the broadcast information of adjacent cells / sectors, which will cause greater interference to users at the edge of the current cell / sector and affect the quality of the broadcast channel of the cell / sector. reception, which ultimately affects the coverage efficiency of the cell / sector

Method used

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  • Method and system for transmitting multi-cell/sector broadcast information
  • Method and system for transmitting multi-cell/sector broadcast information
  • Method and system for transmitting multi-cell/sector broadcast information

Examples

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Embodiment 1

[0074] In a specific embodiment of the present invention, all useful subcarrier groups of 448 subcarriers are equally divided into 7 consecutive blocks, and each block contains 64 subcarriers, that is, the first block includes subcarriers 0-63, and the second block Includes subcarriers 64-127, block 3 includes subcarriers 128-191, block 4 includes subcarriers 192-255, block 5 includes subcarriers 256-319, block 6 includes subcarriers 320-383, block 7 Subcarriers 384-447 are included.

[0075] Mapping the broadcast information of the current cell / sector and neighboring cells / sectors to the above subcarrier groups respectively can ensure that the subcarrier groups used by adjacent cells / sectors do not interfere with each other.

[0076] As shown in FIG. 9 , it is a schematic diagram of different cells / sectors in Embodiment 1 occupying one block to transmit the broadcast channel information of the cell / sector.

[0077] In the case of cell networking, each cell is given a number ...

Embodiment 2

[0080] In another embodiment of the present invention, all useful 448 subcarriers are equally divided into 7 parts, each part contains 64 subcarriers, and the first block includes subcarriers {0+7*n: 0<=n<64}, Block 2 includes subcarriers {1+7*n: 0<=n<64}, block 3 includes subcarriers {2+7*n: 0<=n<64}, block 4 includes subcarriers {3 +7*n: 0<=n<64}, the 5th block includes subcarrier {4+7*n: 0<=n<64}, the 6th block includes subcarrier {5+7*n: 0<= n<64}, the seventh block includes subcarriers {6+7*n: 0<=n<64}, as shown in the figure below, different cells / sectors occupy one of the blocks to transmit the broadcast channel information of the cell / sector .

[0081] As shown in FIG. 12 , it is a schematic diagram of different cells / sectors in Embodiment 2 occupying one of the subcarriers to transmit the broadcast channel information of the cell / sector.

[0082] Embodiment 2 In the case of cell networking, each cell is assigned a number i (1<=i<=7), and the cell with the number i o...

Embodiment 3

[0086] In another specific embodiment of the present invention, all useful 448 subcarriers are divided into 3 blocks, each block contains 149 subcarriers, the first block includes subcarriers 0-148, and the second block includes subcarriers 149-397 , the third block includes subcarriers 398-446, as shown in Figure 12, different cells / sectors occupy one of the blocks to transmit the broadcast channel information of the cell / sector.

[0087] In the case of cell / sector networking, each cell / sector is assigned a number i (1<=i<=3), and the cell / sector numbered i occupies the i-th block of subcarrier resources. In the frequency domain mapping module shown in FIG. 13 , the cell / sector numbered i maps the broadcast information of the cell / sector to the corresponding i-th frequency block.

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Abstract

The disclosed multiple subzone / sector broadcast message transmission method in OFDM system comprises: A. the current subzone / sector maps its broadcast message to the first sub-carrier set in sub-carrier set; and B. transmits the subzone / sector broadcast message to the receiving end through the sub-carrier set. This invention can reduce the channel interference on subzone / sector edge user.

Description

technical field [0001] The invention relates to the communication field, in particular to a multi-cell / sector broadcast information transmitting method and system in an orthogonal multiplex frequency division multiplexing system. Background technique [0002] With the development of wireless mobile communication, users have put forward higher and higher requirements for the rate and quality of service of wireless communication, but the further development of wireless communication is limited due to the lack of wireless spectrum resources. On the other hand, the multipath of wireless channels and time-varying characteristics will cause great damage to the signal transmitted in it. These two practical problems have become obstacles to the development of wireless communication. The multi-carrier OFDM technology that has appeared in recent years has also become a research hotspot because it can well overcome the multipath characteristics of wireless channels and has higher spect...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L27/26H04Q7/22H04W16/24
CPCH04L5/0023H04W16/24
Inventor 党淑君
Owner HUAWEI TECH CO LTD
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