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Cell switching method based on time-division duplex system

一种时分双工系统、小区切换的技术，应用在可持续建筑、无线通信、减少能耗等方向，能够解决不能可靠接收切换控制命令、增加用户干扰、切换失败等问题，达到可靠切换、减少干扰、降低发送功率的效果

Active Publication Date: 2006-12-13
SHANGHAI ULTIMATE POWER COMM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The handover method described in the present invention is used to solve the problem that the current user equipment cannot reliably receive the handover control command sent by the RNC, resulting in handover failure; in addition, the handover method described in the present invention is also used to reduce Users in the same slot increase the transmission power of the user equipment in order to ensure the communication quality, which increases the interference problem between users

Method used

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  • Cell switching method based on time-division duplex system
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  • Cell switching method based on time-division duplex system

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Embodiment Construction

[0029] The Time Division Duplex (TDD, Time Division Duplex) system is realized based on periodically reusing the wideband code division multiple access TDMA frame structure in the wireless channel time domain. The TDMA frame structure is subdivided into several time slots. Under the TDD system, flexible switching between the up / down link can be easily realized, which is an outstanding advantage of the time division duplex system. In particular, the time slot allocation between the up / down link can be called a flexible conversion point, which can meet the requirements of different services. Therefore, the present invention uses the technology of TD-SCDMA to realize all symmetrical and asymmetrical services by flexibly changing the switching point of the up / down link.

[0030] As a time-division duplex TDD system, handover technology is one of the key technologies of radio resource control in TD-SCDMA system. The performance of the system is directly affected by the handover te...

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Abstract

The invention relates to a region switch method based on time-division double system, which comprises: A, user device, according to the test control message that set by the wireless network controller, tests the received pilot signal channels of local region and nearby region, and reports the tested result to the wireless network controller; B, wireless network controller judges if the switched target region has the useful resource with different time slot to the former region; if it has, sending region switch command to the user device, and distributing useful resource in the target region, and sending the service load data of user device to the former region and target region; C, said user device receives the switch command, according to the distributed useful resource, communicates with the former and target regions at the same time and the same frame. The invention also provides a relative user device, which comprises a testing unit and a switch unit. The invention can reduce the communication failure, to improve system property.

Description

technical field [0001] The present invention relates to the switching technology of mobile communication technology, more specifically, the present invention relates to a cell switching method based on time division duplex system. Background technique [0002] At present, mobile communication has been developed to the third generation of mobile communication 3G. TD-SCDMA is one of the three main standards of the third generation mobile communication approved by the International Telecommunication Union (ITU, International Telecommunication Union) in May 2000 and by 3GPP in March 2001. As a 3G standard for time division multiplexing, Time Division Synchronous Code Division Multiple Access (TD-SCDMA, Time Division-Synchronization Code Division Multiple Access) is regarded as a low chip rate (1.28MCps, 1.28 megachips / second) in the ITU standard Time division multiplexing technical scheme. [0003] At present, in the cellular mobile communication system, switching is essential...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/32H04W36/38
CPCH04W36/30Y02B60/50Y02D30/70H04W36/304H04W24/10H04W36/0061H04W72/0446
Inventor 杨贵亮乔元新李峰乌娜
Owner SHANGHAI ULTIMATE POWER COMM TECH
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