Method for reducing small-region interference in time-division synchronous CDMA accessing system

A technology of synchronous code division multiple access and inter-cell interference, which is applied in the direction of network traffic/resource management, electrical components, radio/inductive link selection and arrangement, and can solve the problem that TD-SCDMA system configuration cannot be optimized and system capacity is sacrificed And other issues
CN1816198AInactive Publication Date: 2006-08-09诺基亚西门子通信系统技术(北京)有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
诺基亚西门子通信系统技术(北京)有限公司
Publication Date
2006-08-09
Estimated Expiration
Not applicable · inactive patent

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Abstract

Base on different types of service in each region of system, the method allows TD-SCDMA system configures different numbers of time slots for upward and downward services for the region smartly. The said method is only applied to adjacent sub zones in configuration area, where there are different numbers of time slots for upward and downward services. Based on link estimation of investigated user device, and result report for measured channel power of interference signal up or down link, network controller determines whether a time slot is assigned to the investigated user device in order to reduce mutual interference between adjacent sub zones with different service time slots being configured. The network controller also carries out periodic monitoring for switching number inside sub zone in the said two adjacent sub zones in order to overcome influence on channel allocation caused by time varying character of interference signal so as to optimize allocation and raise capacity.
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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 (TD-SCDMA: Time Division-Synchronous Code Division Multiple Access) system is one of the third generation mobile communication system access network (Radio Access Network) standards, working in UTRAN (UMTS Terrestrial Radio Access Network) under the network architecture, it is standardized by the 3GPP (3rd Generation Partner Project) standardization organization.

[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)....

Claims

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