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Method for reducing interference between small zones in time-division synchronous CDMA cut-in system

A synchronous code division multiple access, inter-cell interference technology, applied in electrical components, wireless communication, etc., can solve the problems of TD-SCDMA system configuration that cannot be optimized, sacrificing system capacity, etc.

Inactive Publication Date: 2006-06-07
诺基亚西门子通信系统技术(北京)有限公司
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  • Abstract
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Problems solved by technology

In this way, although the strong interference between the adjacent cells can be avoided, it also loses the advantage that the TD-SCDMA system can flexibly configure the number of different uplink and downlink service time slots according to different service types, so that TD-SCDMA The configuration of the system cannot be optimized, sacrificing the capacity of the system

Method used

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  • Method for reducing interference between small zones in time-division synchronous CDMA cut-in system
  • Method for reducing interference between small zones in time-division synchronous CDMA cut-in system
  • Method for reducing interference between small zones in time-division synchronous CDMA cut-in system

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Embodiment Construction

[0018] Embodiment 1 of the present invention is shown in FIG. 5 and FIG. 6 .

[0019]In Embodiment 1 of the present invention, as shown in Figure 5, according to the difference of main service types in each area of ​​the TD-SCDMA system, the TS0 and always TS1 is the time slot for uplink business. In the area A mainly for voice business, TS2 and TS3 are configured as time slots for uplink business, and TS4, TS5 and TS6 are configured as time slots for downlink business. In the main area B, TS2 is configured as an uplink service time slot, TS3, TS4, TS5, and TS6 are configured as downlink service time slots, and cell a and cell b are located in and adjacent to the area A and area B respectively; It can be seen that in the service time slot TS3, the cell a and the adjacent cell b have different configurations, so in order to avoid the interference between the cell a and the cell b, the uplink and downlink services in the cell a are kept The configuration of time slots remains u...

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Abstract

This invention relates to a method for reducing reference among cells in TD-SCDMA access system. It contains respectively distributing different number up and down service time slot to different cells according to different service types, in adjacent cells with different service time slot, stopping any cell to use said service time slot and keeping another cell up and down service time slot to be unchanged. Said invention can optimize TD-SCDMA access system configuration and raise system capacity.

Description

(1) Technical field [0001] The present invention relates to a method for reducing interference in a wireless communication system, and more specifically relates to a method for reducing inter-cell interference in a time division-synchronous code division multiple access system. (2) Background technology [0002] Time Division-Synchronous Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access) system is one of the third-generation mobile communication system standards, working under the UTRAN (UMTS Terrestrial Radio Access Network) network architecture, established by 3GPP (3rd Generation Partner Project) standardization organization to standardize it. [0003] The TD-SCDMA system adopts the Time Division Duplex (Time Division Duplex) method, that is, the uplink and downlink are not separated on the carrier frequency (Carrier frequency), but the uplink is separated by different time slots (Time Slot). (Uplink) and downlink (Downlink) are separ...

Claims

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Application Information

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IPC IPC(8): H04W24/02H04W72/04
Inventor 张宇白伦博马瑞克
Owner 诺基亚西门子通信系统技术(北京)有限公司
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