Method for changing up and down TDD configuration

一种用户设备、基站的技术，应用在无线通信领域，能够解决干扰、下行数据接收干扰等问题，达到避免严重干扰的效果

Inactive Publication Date: 2013-07-03
BEIJING SAMSUNG TELECOM R&D CENT +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In this case, on the one hand, the downlink data transmission of the micro base station will cause interference to the uplink data sent by all macro base station terminals to the macro base station, and the closer the micro base station is to the macro base station, the more serious the interference; on the other hand, the macro base station The uplink data sent by the terminal will cause serious interference to the downlink data reception of the micro base station terminal which is closer to the macro base station terminal

Method used

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  • Method for changing up and down TDD configuration
  • Method for changing up and down TDD configuration
  • Method for changing up and down TDD configuration

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Embodiment Construction

[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.

[0035] For the TDD system, it is assumed that adjacent base stations can adopt different TDD uplink and downlink configurations, that is, the base station can dynamically adjust its TDD uplink and downlink configurations according to the load changes of the uplink and downlink services in the cell to meet the requirements of uplink and downlink services. load demand.

[0036] image 3 The implementation steps of the inventive method are provided, specifically:

[0037] Step 301: the base station sends a neighboring cell interference measurement control message to the user equipment in the current cell, instructing the user equipment to measure the interference from the user equipment of the neighboring cell.

[0038] In the interference measurement co...

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Abstract

The invention provides a method for changing up and down TDD (Time Division Duplexing) configuration. The method comprises the steps that user equipment measures interference of user equipment in an adjacent cell to the user equipment and reports the interference situation to a base station, and the base station changes the current up and down TDD configuration according to the interference situation reported by the user equipment and the current up and down service requirements. The method meets the requirement of the dynamically changing up and down service load under the condition that the serious interference between the adjacent cells is not caused.

Description

technical field [0001] The invention relates to wireless communication technology, in particular to a method for changing TDD uplink and downlink configurations. Background technique [0002] The Long Term Evolution (LTE) system supports two duplex modes of Frequency Division Duplex (FDD) and Time Division Duplex (TDD). figure 1 It is the frame structure of the TDD system. The length of each radio frame is 10ms, which is equally divided into two half-frames with a length of 5ms. Each half-frame contains 8 time slots with a length of 0.5ms and 3 special domains, namely downlink pilot time slot (DwPTS), guard interval (GP) and uplink pilot time slot (UpPTS), these 3 special domains The sum of the lengths is 1ms. Each subframe consists of two consecutive time slots, that is, the kth subframe includes time slot 2k and time slot 2k+1. The TDD system supports seven uplink and downlink configurations, as shown in Table 1. In Table 1, D represents a downlink subframe, U represe...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W72/04H04W24/00
CPCH04B7/2656H04W24/10H04L5/006H04L5/0073H04L5/0044H04L5/0094H04L5/0096H04L5/1469H04L5/0035H04J11/005H04W72/0446H04L5/0032H04L5/14H04W24/02
Inventor 孙程君付景兴
Owner BEIJING SAMSUNG TELECOM R&D CENT
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