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Method and application for reducing coexistent interference of time division duplexing system in different frame structure

A time-division duplex system and time-division duplex technology are applied in communication between multiple stations, radio/inductive link selection arrangements, selection devices, etc., which can solve problems such as high cost and complex implementation, and achieve reduced interference, Effects of eliminating coexistence interference and improving system efficiency

Active Publication Date: 2007-05-09
SHANGHAI ULTIMATE POWER COMM TECH
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Problems solved by technology

[0015] The purpose of the present invention is to provide a method for reducing the coexistence interference of time division duplex systems with different frame structures, so as to overcome the problems in the prior art for eliminating the coexistence of different systems Mutual interference requires high cost, and the shortcomings of complex implementation, simply and effectively eliminate the mutual interference generated when time division duplex systems with different frame structures coexist

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  • Method and application for reducing coexistent interference of time division duplexing system in different frame structure
  • Method and application for reducing coexistent interference of time division duplexing system in different frame structure
  • Method and application for reducing coexistent interference of time division duplexing system in different frame structure

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[0060] The core of the invention is to arrange the time slot configuration of the system based on the UTRA TDD frame structure when the UTRA TDD system and the TD-SCDMA system coexist. During the specific implementation, the same point (each wireless frame length is 10ms) and the uniqueness of the TD-SCDMA system wireless frame structure (each wireless frame includes 2 subframes, each subframe has 2 subframes) 3 special time slots), based on the time slot configuration of the UTRA TDD system, determine the time slot allocation of the TD-SCDMA system. Guarantee the normal use of the special time slot in the first subframe in the wireless frame structure of the TD-SCDMA system, so that the special time slot in the second subframe is used solely for downlink pilot time slots or uplink pilot time slots , to insert idle parts into the time slots corresponding to the transition point of the UTRA TDD system frame structure, so that the time slot allocation in the TD-SCDMA system is c...

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Abstract

When co-existence of the time division-synchronization code division multi-address TD-SCDMA time-division duplex system with the common land wireless access UTRA TDD time division duplex system is needed, configuring the slot of UTRA TDD, which deploys neighborly and uses the neighbor frequency according to the slot configuration of UTRA TDD system in order to ensure the consistent between the up going and down going slots of two systems. Therefore, the invention reduces the mutual interfere between systems and raises the system function.

Description

technical field [0001] The invention relates to the technical field of mobile communication, in particular to a method and application for reducing coexistence interference of time division duplex systems with different frame structures. Background technique [0002] TDD (Time Division Duplex) is a duplex mode of a communication system, which is used to separate receiving and transmitting channels (or uplink and downlink) in mobile communication systems. In the mobile communication system of TDD mode, reception and transmission are performed on the same frequency channel, that is, different time slots of the carrier. In addition to providing voice, the third generation mobile communication system also requires data and multimedia services. Since Internet (Internet), file transmission and multimedia services often have asymmetric uplink and downlink capacity, it is suitable to adopt TDD duplex mode. [0003] The TDD system has the following characteristics: [0004] (1) No...

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Application Information

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IPC IPC(8): H04B7/26H04Q7/36
Inventor 唐海王可孙韶辉
Owner SHANGHAI ULTIMATE POWER COMM TECH
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