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Method, system and device for switching antenna modes of TDD system

An antenna mode and antenna technology, which is applied in the field of antenna mode switching in time division duplex systems, can solve problems such as not applicable to TDD systems, and achieve the effect of improving system performance

Active Publication Date: 2009-12-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In summary, the current antenna mode switching methods are not suitable for TDD systems

Method used

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  • Method, system and device for switching antenna modes of TDD system
  • Method, system and device for switching antenna modes of TDD system
  • Method, system and device for switching antenna modes of TDD system

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Embodiment Construction

[0032] Embodiments of the present invention provide a method, system, and device for switching antenna modes of a TDD system, which are used to switch antenna modes of a TDD system, so that the transmitting end of the TDD system can adaptively switch to the current optimal antenna mode to transmit data , to adapt to real-time channel changes and improve system performance.

[0033] An embodiment of the present invention provides an antenna mode switching scheme for a TDD system based on a transmitting end (base station).

[0034] How to implement the embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0035] see figure 1 A method for switching antenna modes of a TDD system provided by an embodiment of the present invention generally includes steps:

[0036] S101. The base station obtains the channel matrix of the downlink channel corresponding to each candidate antenna, and receives the noise power of each downlink ch...

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Abstract

The invention discloses a method, a system and a device for switching antenna modes of a TDD system, which are used for realizing the switching of the antenna modes of the TDD system. The method for switching the antenna modes of the TDD system comprises the following steps that: a base station acquires a channel matrix of downlink channels corresponding to various candidate antennas, and receives the noise power of the downlink channels measured by a user terminal; and the base station calculates to obtain the signal-to-noise ratio after the detection of data stream of the downlink channels corresponding to the candidate antennas according to the channel matrix and the noise power, and performs the switching of the antenna modes according to the signal-to-noise ratio after the detection. The method, the system and the device are used for realizing the switching of the antenna modes of the TDD system, ensure that a data transmitting end of the TDD system is self-adaptively switched to a currently optimum antenna mode to transmit data, adapt to the real-time change of the channels, and improve the performance of the system.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular to an antenna mode switching method, system and device for a Time Division Duplex (TDD, Time Division Duplexing) system. Background technique [0002] In future communication systems, such as High Speed ​​Packet Access Plus (HSPA+, High Speed ​​Packet Access Plus), Long Term Evolution (LTE, Long Term Evolution) and other systems, multiple input multiple output (MIMO, Multiple Input Multiple Output) technology is introduced In order to further improve the data transmission rate and transmission quality of the system. In addition, smart antennas have also been widely used in communication systems. The open-loop MIMO technology includes spatial multiplexing (SM, Spatial Multiplexing) and transmit diversity (TD, Transmit Diversity) technology. The key technology used by the smart antenna is Beam-Forming (BF, Beam-Forming) technology. [0003] The applicable scena...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04B7/26
Inventor 郭保娟杨宇
Owner DATANG MOBILE COMM EQUIP CO LTD
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