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Data communication method, system, network side equipment and terminal

A network-side device and data communication technology, applied in the direction of digital transmission system, transmission system, radio transmission system, etc., can solve problems such as different processing schemes, limit the application of nonlinear precoding, affect the success rate of data transmission and communication quality, etc. Achieve the effect of avoiding wrong reception, improving accuracy and success rate

Inactive Publication Date: 2015-03-11
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, unlike various linear precoding algorithms that can adopt a unified data processing scheme at the receiving end, for most currently achievable nonlinear precoding schemes, such as THP (Tomlinson-Harashima Precoding, Tomlinson-Harashima Precoding), VP (Vector Perturbation, vector perturbation), etc., the data processing schemes at the receiving end are not the same, and they are also different from the processing schemes of the receiver when linear precoding is used
In this way, the transmission signal may not be correctly received by the terminal because the precoding algorithm adopted by the network side equipment is not supported by the terminal receiver, which seriously affects the success rate of data transmission and communication quality, and may limit the nonlinear precoding The application of coding in communication signal transmission prevents the performance of signal transmission from being further improved

Method used

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  • Data communication method, system, network side equipment and terminal
  • Data communication method, system, network side equipment and terminal
  • Data communication method, system, network side equipment and terminal

Examples

Experimental program
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no. 1 example

[0043] See figure 1 , is the flow chart of the first embodiment of the data communication method provided by the present invention, including:

[0044] S100. Acquire receiver precoding support capability information of a terminal.

[0045] S101. Select a precoding algorithm according to the receiver precoding support capability information.

[0046] S102. Precode the data to be sent according to the precoding algorithm, and send the precoded data to the terminal.

[0047] In the data communication method provided by the embodiment of the present invention, by obtaining the receiver precoding support capability information of the terminal, and then selecting a precoding algorithm to precode the data to be sent according to the receiver precoding support capability information, it is possible to avoid problems caused by the implementation of the network side. The incorrect reception of user data caused by the mismatch between the precoding algorithm and the capability of the t...

no. 2 example

[0054] See figure 2 , is a flow chart of the second embodiment of the data communication method provided by the present invention, the method includes:

[0055] In step S200, a receiver capability query request is sent to the terminal, and the receiver capability query request includes precoding type information supported by the network side device. Query requests can be sent via broadcast, multicast or unicast.

[0056] Preferably, in step S200, the precoding type supported by the network side device includes linear precoding and / or nonlinear precoding. For example, the precoding type information supported by the network side device may be used to indicate that the network side device only supports linear precoding, the network side device only supports nonlinear precoding, or the network side device supports both linear precoding and nonlinear precoding.

[0057] Preferably, in step S200, if the precoding type supported by the network side device includes nonlinear precod...

no. 3 example

[0066] See image 3 , is a flow chart of the third embodiment of the data communication method provided by the present invention, the method includes:

[0067] In step S300, a receiver capability query request is sent to the terminal, and the receiver capability query request includes receiver type information matching the precoding type supported by the network side device. Query requests can be sent via broadcast, multicast or unicast.

[0068] Preferably, in step S300, the receiver type matching the precoding algorithm supported by the network side device includes a receiver supporting linear precoding, a receiver supporting nonlinear precoding, and a receiver supporting both linear precoding and nonlinear precoding. coded receiver.

[0069] Preferably, in step S300, if the receiver type matching the precoding algorithm supported by the network side equipment is a receiver supporting nonlinear precoding or a receiver supporting both linear precoding and nonlinear precodin...

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Abstract

A data communication method comprises: obtaining receiver precoding support capability information about a terminal; according to the receiver precoding support capability information, selecting a precoding algorithm; and according to the precoding algorithm, precoding data to be sent, and sending the precoded data to the terminal. Also disclosed are a network-side device, a terminal and a data communication system. The present invention can be applied to avoid being unable to correctly receive user data due to the mismatch between the precoding algorithm conducted by the network side and the capability of a terminal receiver, and increase the accuracy and success rate of data communications.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a data communication method, system, network side equipment and terminal. Background technique [0002] A large number of theoretical studies and experimental results show that the multiple input multiple output (Multiple Input Multiple Output, MIMO) technology using multiple antenna space resources can spatially multiplex the data of multiple users on the same time-frequency resource, thereby greatly improving wireless communication. The spectral efficiency and system capacity of the system. At present, multi-user MIMO (Multi-User MIMO, MU-MIMO) technology has become one of the core technologies of mainstream wireless communication standards such as 3GPP LTE / LTE-A, and all mainstream equipment manufacturers are fully committed to the research of MU-MIMO related technologies and development. [0003] In the MU-MIMO system, the transmitter uses user scheduling techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/06
CPCH04B7/0628H04B7/0482
Inventor 邱晶田廷剑
Owner HUAWEI TECH CO LTD