Method for determining uplink transmission diversity mode and communication device

A transmit diversity and communication device technology, applied in space transmit diversity, diversity/multi-antenna systems, preventing/detecting errors through diversity reception, etc., can solve the problem of inability to effectively overcome fast fading, not considering slow fading scenarios, and transmit diversity methods Problems such as inability to effectively combine

Active Publication Date: 2011-04-27
HUAWEI TECH CO LTD
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  • Abstract
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Problems solved by technology

[0004] The open-loop transmit diversity method is adopted in the slow fading period, and cannot effectively overcome the fast fading
The closed-loop transmit diversity method is based on the precoding control indicator (Pre-coding Control Indicator, PCI) feedback method of the fast fading cycle, and does not consider the slow fading scenario
The two transmission diversity methods cannot be effectively combined, and the effective transmission diversity method cannot be determined according to the actual situation

Method used

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  • Method for determining uplink transmission diversity mode and communication device
  • Method for determining uplink transmission diversity mode and communication device
  • Method for determining uplink transmission diversity mode and communication device

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Embodiment Construction

[0013] In order to make the specific technical solution and the purpose of the invention clearer, further description will be made below in conjunction with specific implementation methods and accompanying drawings.

[0014] refer to figure 1 , a method for determining an uplink transmit diversity mode provided by an embodiment of the present invention, the method includes: a base station sends a shared control channel (Shared Control Channel for HS- DSCH, HS-SCCH) order (HS-SCCH Order), the HS-SCCH Order includes order type information (Order type). Order type indicates that the transmit diversity mode of the uplink is an open-loop transmit diversity mode or a closed-loop transmit diversity mode. In the embodiment of the present invention, the open-loop transmit diversity mode can be regarded as the slow fading feedback mode of the closed-loop transmit diversity, and the closed-loop transmit diversity mode can be regarded as the fast fading feedback mode of the closed-loop t...

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Abstract

The invention relates to the technical field of wireless communication, and discloses a method for determining an uplink transmission diversity mode. The method comprises the following step of: transmitting a high-speed shared control channel (HS-SCCH) command to user equipment (UE) on the HS-SCCH of high-speed special shared channels, wherein the HS-SCCH command comprises command type information, the command type information indicates the uplink transmission diversity mode, and the transmission diversity mode is an open loop transmission diversity mode or a closed loop transmission diversity mode. The invention also discloses a communication device. According to the embodiment provided by the invention, the uplink transmission diversity mode can be determined according to the actual situation so that the system properties such as system capacity, coverage range and the like are maximized in the UE during uplink transmission diversity.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and a communication device for determining an uplink transmit diversity mode. Background technique [0002] In High Speed ​​Packet Access (HSPA) technology, the space gain of transmit diversity can be further utilized through the uplink antenna transmit diversity technology, and the interference level in the cell can be reduced without changing the uplink transmission rate, thereby expanding the uplink Link coverage. [0003] Current uplink antenna transmission diversity methods include an open loop transmission diversity (Uplink Open Loop Transmission Diversity, OLTD) method and a closed loop transmission diversity (Uplink Closed Loop Transmission Diversity, CLTD) method. The open-loop transmit diversity mode includes an open-loop antenna alternate selection transmission mode and an open-loop antenna traversal calculation beamforming mode. [00...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/06H04L1/06
CPCH04B7/0689H04B7/0404
Inventor 刘铮王宗杰韩重阳
Owner HUAWEI TECH CO LTD
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