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Precoding initialization method for uplink closed-loop transmission diversity and terminal

An initialization method and transmit diversity technology, applied in the field of wireless communication, to achieve the effect of improving performance

Inactive Publication Date: 2013-03-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is to provide a precoding initialization method for uplink closed-loop transmission diversity and a terminal to solve the problem that the terminal obtains the PCI initialization value after the uplink closed-loop transmission diversity is activated

Method used

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  • Precoding initialization method for uplink closed-loop transmission diversity and terminal
  • Precoding initialization method for uplink closed-loop transmission diversity and terminal
  • Precoding initialization method for uplink closed-loop transmission diversity and terminal

Examples

Experimental program
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specific Embodiment 1

[0048] Such as figure 2 As shown, the terminal supporting the high-speed packet service is configured to use uplink closed-loop transmit diversity, and the network side carries the initial PCI when issuing the uplink closed-loop transmit diversity activation command. The uplink closed-loop transmit diversity activation command is transmitted through the HS-SCCH channel. After receiving the initial PCI, the terminal uses the PCI to perform uplink closed-loop diversity transmission.

[0049] The generation of the PCI on the network side can generate the PCI value by estimating the channel quality of the primary uplink pilot and / or related data decoding conditions. For example, PCI=00.

specific Embodiment 2

[0050] Such as image 3 As shown, the terminal supporting the high-speed packet service is configured to use uplink closed-loop transmit diversity, and the network side issues an uplink closed-loop transmit diversity activation command to the terminal, and the uplink closed-loop transmit diversity activation command is transmitted through the HS-SCCH channel. The network side sends the initial PCI to the terminal side through the P-PCICH channel. Use this PCI for uplink closed-loop diversity transmission.

specific Embodiment 3

[0051] Such as Figure 4 As shown, the terminal supporting the high-speed packet service is configured to use uplink closed-loop transmit diversity.

[0052] The network side issues an uplink closed-loop transmit diversity activation command to the terminal, and the uplink closed-loop transmit diversity activation command is transmitted through the HS-SCCH channel.

[0053] The terminal returns an uplink closed-loop transmit diversity activation success response to the network side.

[0054] The network side sends the initial PCI to the terminal side through the P-PCICH channel.

[0055] The terminal uses this PCI to perform uplink closed-loop diversity transmission.

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Abstract

The invention discloses a precoding initialization method for uplink closed-loop transmission diversity and a terminal. The method includes: a network side device configures an initial precoding control indication for the terminal, the terminal generates the initial precoding control indication, or the network side device and the terminal mutually agree on the initial precoding control indication. By the technical scheme, precoding instruction initialization of an uplink closed-loop transmission diversity system can be achieved, and accordingly functions of the uplink closed-loop transmission diversity are realized. Initialization operation of PCI (precoding control indication) after transmission diversity activation is completed by a transmitting end, so that the terminal can acquire precoding indication information needed by launching when activating the uplink closed-loop transmission diversity again, data transmission is guaranteed, and system performances are improved.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a precoding initialization method for uplink closed-loop transmission diversity and a terminal. Background technique [0002] The multi-antenna technology achieves higher system capacity, wider cell coverage and better service quality by using multiple antennas at the transmitting end and / or receiving end. Multiple antennas at the transmitting end and / or receiving end may be used to implement transmit or receive diversity or to implement spatial multiplexing. [0003] Transmit diversity technology is an anti-fading technology in the field of wireless communication that transmits at least two signals containing the same information at the transmitting end. These signals carrying the same information originate from at least two mutually independent signal sources. Transmit diversity technology can be divided into three basic types of space, frequency, and time accord...

Claims

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Application Information

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IPC IPC(8): H04B7/06
CPCH04B7/0404H04L27/00H04W24/10H04B7/0456
Inventor 贺美芳史莉荣余波
Owner ZTE CORP