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Method for configuring and coordinating sub-frame between minizones of TDD(Time Division Duplexing) and device thereof

A technology of subframe configuration and coordination method, applied in network traffic/resource management, electrical components, wireless communication, etc., can solve problems such as system performance degradation, inability to fully adapt to business dynamic changes, adverse effects of operation and scheduling, etc.

Active Publication Date: 2011-10-12
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this change needs to go through the process of paging and re-reading system information, and there are some ambiguity problems before and after the change. For example, if the frame configuration is changed frequently, the system performance will be severely degraded, and the HARQ (Hybrid Automatic Repeat Request, hybrid Automatic Repeat Request) operations and scheduling, etc. adversely affect
Moreover, the minimum frame configuration change period supported in the TD-LTE standard is 640ms, which is not flexible enough to fully adapt to the dynamic changes of services

Method used

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  • Method for configuring and coordinating sub-frame between minizones of TDD(Time Division Duplexing) and device thereof
  • Method for configuring and coordinating sub-frame between minizones of TDD(Time Division Duplexing) and device thereof
  • Method for configuring and coordinating sub-frame between minizones of TDD(Time Division Duplexing) and device thereof

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Embodiment Construction

[0029] In order to achieve dynamic allocation of uplink and downlink subframes, the following scheme can be adopted: within a certain time period, four subframe types are set, including fixed subframes for downlink transmission, fixed subframes for uplink transmission, and flexible allocation It is a subframe for uplink or downlink transmission. To figure 2 Shown as an example, the time period is a radio frame (just an example, other time periods may also be used), where subframes #0, #5 are fixed downlink subframes, and subframes #2, #7 are fixed Uplink subframes, subframes #1 and #6 are special subframes (can also be classified as fixed downlink subframes), and other subframes (#3, #4, #8, #9) are flexibly allocated as uplink or downlink The transmitted subframe. For the last type of subframes, the base station can dynamically configure according to real-time service requirements and channel conditions to adapt to dynamic changes in service requirements.

[0030] The above s...

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Abstract

The invention discloses a method for configuring and coordinating sub-frame between minizones of TDD(Time Division Duplexing) and device thereof. The method comprises the following steps: a minizone of a source TDD base station performs the alternation adjudication of the sub-frame configuration for the minizone of the current base station, and when the adjudication is that the sub-frame configuration of the minizone of the current base station need to be altered, sends an alternation request of the sub-frame configuration to a minizone of an adjacent target TDD base station; then, the minizone of the source TDD base station receives a feedback information from the minizone of the target TDD base station which informs whether to accept the alternation request of the sub-frame configuration, and sets the sub-frame configuration of the minizone of the current base station correspondingly according to the feedback information. The invention can improve the flexibility of the sub-frame configuration.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, in particular to a method and device for coordinating subframe configuration between TDD cells. Background technique [0002] As one of the two basic duplexing systems, TDD (Time Division Duplexing, Time Division Duplexing) mode has received more and more attention in the context of the ever-increasing demand for bandwidth in broadband mobile communications. [0003] For the basic duplex mode adopted by the cellular system, the TDD mode means that the uplink and downlink use the same working frequency band, and the uplink and downlink signals are transmitted at different time intervals. There is a guard interval (Guard Period) between the uplink and the downlink. ); FDD (Frequency Division Duplexing, Frequency Division Duplexing) mode means that the uplink and downlink use different working frequency bands, which can transmit uplink and downlink signals on different frequency car...

Claims

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Application Information

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IPC IPC(8): H04W28/16H04W72/04
CPCH04W72/542
Inventor 潘学明沈祖康徐婧
Owner DATANG MOBILE COMM EQUIP CO LTD
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