WO2013135085A1

WO2013135085A1 - Data communication method and system, network-side device and terminal

Info

Publication number: WO2013135085A1
Application number: PCT/CN2012/087112
Authority: WO
Inventors: 邱晶; 田廷剑
Original assignee: 华为技术有限公司
Priority date: 2012-03-16
Filing date: 2012-12-21
Publication date: 2013-09-19
Also published as: CN103312445B; CN103312445A

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

Data communication method, system, network side device and terminal

The present invention relates to the field of wireless communications, and in particular, to a data communication method, system, network side device, and terminal. Background technique

A large number of theoretical studies and experimental results show that multi-input and multi-output using multi-antenna space resources

Multiple Input Multiple Output (MIMO) technology can multiply and reuse data of multiple users on the same time-frequency resource, thereby greatly improving the spectrum efficiency and system capacity of the wireless communication 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. All major equipment manufacturers are fully committed to the research of MU-MIMO related technologies. And development.

In the MU-MIMO system, the transmitting end selects some users with better channel characteristics to perform multi-user pairing through user scheduling technology; and then pre-processes the data signals of multiple paired users by using precoding technology to fully suppress The interference of other users' transmitted signals to the received signals of the target user.

According to whether nonlinear operations are introduced in the precoding process, precoding techniques are classified into linear precoding and nonlinear precoding. In the current LTE R9/R10 standard, linear precoding has been introduced. Although the linear precoding implementation is simple, the hardware requirements are not high, but it has a great influence on the performance of the transmitted signal. In contrast, although the algorithm and implementation of nonlinear precoding are more complicated, it has less impact on the performance of the transmitted signal. Today, with more and more attention to the user experience, the application of the nonlinear precoding algorithm in the communication field is obtained. A wide range of concerns. With the continuous improvement of hardware processing capabilities, achievable nonlinear precoding technology has become more and more popular in people's daily applications. However, unlike various linear precoding algorithms, which can adopt a uniform data processing scheme at the receiving end, most of the currently available nonlinear precoding schemes such as THP (Tomlinson-Harashima Precoding, Tomlinson-Harashima Precoding) Precoding), VP (Vector Perturbation), etc., the data processing schemes at the receiving end are different, and it is also different from the processing scheme of the receiver when linear precoding is used. This may result in transmission due to the precoding algorithm used by the network side device not being supported by the terminal receiver. The signal can not be correctly received by the terminal, which seriously affects the success rate and communication quality of data transmission. At the same time, it may limit the application of nonlinear precoding in communication signal transmission, so that the performance of signal transmission cannot be further improved. Summary of the invention

Embodiments of the present invention provide a data communication method. The network side device can acquire the support capability of the terminal receiver for the precoding scheme, thereby selecting an appropriate precoding scheme.

The embodiment of the invention provides a data communication method, including:

Obtaining receiver precoding support capability information of the terminal;

Selecting a precoding algorithm according to the receiver precoding support capability information;

Precoding the data to be transmitted according to the precoding algorithm, and transmitting the precoded data to the terminal.

The embodiment of the invention further provides a data communication method, including:

Transmitting, by the network side device, receiver precoding support capability information, so that the network side device selects a precoding algorithm to precode the data according to the receiver precoding support capability information;

And receiving pre-coded data sent by the network side device, and decoding the data according to the precoding algorithm.

Correspondingly, the embodiment of the present invention further provides a network side device, including:

a terminal capability acquisition module, configured to acquire receiver precoding support capability information of the terminal, and an algorithm selection module, configured to select a precoding algorithm according to the receiver precoding support capability information;

And a data sending module, configured to perform precoding on the data to be sent according to the precoding algorithm, and send the precoded data to the terminal.

Correspondingly, the present invention also provides a terminal, including:

a terminal capability sending module, configured to send receiver precoding support capability information to the network side device, so that the network side device selects a precoding algorithm to precode the data according to the receiver precoding support capability information;

And a data receiving module, configured to receive pre-coded data sent by the network side device, and decode the data according to the precoding algorithm. Correspondingly, the embodiment of the present invention further provides a data communication system, including a network side device and a terminal, where the network side device includes:

a data sending module, configured to perform precoding on the data to be sent according to the precoding algorithm, and send the precoded data to the terminal;

The terminal includes:

And a data receiving module, configured to receive pre-coded data sent by the network side device, and decode the data according to the precoding algorithm.

The implementation of the embodiment of the present invention has the following beneficial effects: by acquiring the receiver precoding support capability information of the terminal, and then selecting the precoding algorithm to precode the data to be sent according to the receiver precoding support capability information, the network side implementation can be avoided. The error reception of user data caused by the mismatching of the precoding algorithm and the capability of the terminal receiver improves the accuracy and success rate of data communication. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description It is merely some embodiments of the present invention, and those skilled in the art can obtain other drawings according to the drawings without any creative work.

1 is a flowchart of a first embodiment of a network side data communication method provided by the present invention; FIG. 2 is a flowchart of a second embodiment of a network side data communication method provided by the present invention; FIG. 3 is a network side data provided by the present invention; FIG. 4 is a flowchart of a fourth embodiment of a network side data communication method provided by the present invention; FIG. 5 is a schematic structural diagram of a first embodiment of a network side device provided by the present invention;

6 is a schematic structural diagram of a second embodiment of a network side device provided by the present invention; 7 is a schematic structural diagram of a third embodiment of a network side device provided by the present invention;

8 is a flowchart of a first embodiment of a terminal side data communication method provided by the present invention;

9 is a flowchart of a second embodiment of a terminal side data communication method provided by the present invention;

10 is a flowchart of a third embodiment of a terminal-side data communication method provided by the present invention; FIG. 11 is a schematic structural diagram of a first embodiment of a terminal provided by the present invention;

12 is a schematic structural diagram of a second embodiment of a terminal sending module provided by the present invention;

FIG. 13 is a schematic structural diagram of a third embodiment of a terminal sending module provided by the present invention. detailed description

BRIEF DESCRIPTION OF THE DRAWINGS The technical solutions in the embodiments of the present invention will be described in detail below with reference to the accompanying drawings. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative work are within the scope of the present invention.

1 is a flowchart of a first embodiment of a data communication method provided by the present invention, including:

5100. Obtain a receiver precoding support capability information of the terminal.

5101. Select a precoding algorithm according to the receiver precoding support capability information.

S102: Perform precoding on the data to be sent according to the precoding algorithm, and send the precoded data to the terminal.

The data communication method provided by the embodiment of the present invention can obtain the receiver precoding support capability information of the terminal, and then select the precoding algorithm to precode the data to be sent according to the precoding support capability information of the receiver, thereby avoiding implementation by the network side. The erroneous reception of user data caused by the mismatch of the precoding algorithm and the capability of the terminal receiver improves the accuracy and success rate of data communication.

Preferably, in step S100, the receiver precoding support capability information includes the receiver precoding support capability information supported by the receiver, which may be used to indicate that the receiver only supports linear precoding, and the receiver only supports nonlinear precoding or receiver. Both linear precoding and nonlinear precoding are supported.

Preferably, in step S100, if the precoding type supported by the receiver includes nonlinear precoding, the receiver precoding support capability information may further include receiver support capability information for nonlinear precoding. The receiver's support capability information for nonlinear precoding may include the nonlinearity supported by the receiver. Precoding algorithms, such as DPC (Dirty Paper Coding), THP, VP, etc. The receiver's support capability information for nonlinear precoding may also include receiver capability information for the modulo operation, such as the receiver supporting modulo or the receiver not supporting modulo.

Preferably, in step S100, the receiver precoding support capability information may further include a receiver algorithm supported by the terminal. For example, linear receiver algorithms such as MRC (Maximum Ratio Combining), ZF (Zero-forcing), MMSE (Minimum Mean Squared Error), and MMSE IRC (Interference Rejection Combining) And nonlinear receiver algorithms such as ML (Maximum Likelihood), IC (Interference Cancellation), SD (Sphere Decoding, Sphere Decoding). Since the precoding algorithms applicable to different receiver algorithms may be different, the network side device can further understand the receiver's support capability for the precoding algorithm by using the receiver algorithm supported by the reporting terminal.

Preferably, in step S100, the receiver precoding support capability information may be a precoding type indicator index, and each index corresponds to one type of precoding support capability information (eg, supporting linear precoding, supporting nonlinear precoding, and supporting THP) Algorithm, etc.), the index included in the receiver precoding support capability information indicates that the terminal supports the precoding capability represented by the index. The index may be in the form of a bit code, for example, 10 means linear precoding, 11 means nonlinear precoding, and 111 means THP or the like.

Preferably, before step S100, the method may further include: sending a receiver capability query request to the terminal. The receiver capability query request can be sent by broadcast, multicast or unicast. The receiver capability query request can be a general query request for all capabilities of the receiver, or a query request specific to the receiver precoding capability. More preferably, the receiver capability query request may also include network side device support for precoding.

The network side device obtains the receiver precoding support capability information of the terminal, which may be the terminal active reporting mode or the network side device query mode. Figure 2-4 is an example of the network side device querying method.

Referring to FIG. 2, it is a flowchart of a second embodiment of a data communication method provided by the present invention, where the method includes:

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 broadcast, multicast or unicast Way to send.

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 can 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.

Preferably, in step S200, if the precoding type supported by the network side device includes non-linear precoding, the precoding type information supported by the network side device may further include a nonlinear precoding type supported by the network side device, for example, DPC, THP, VP, etc.

Preferably, in step S200, the precoding type information supported by the network side device may be a precoding type indicator index, and each index corresponds to one type of precoding support capability information (eg, supporting linear precoding, supporting nonlinear precoding) , support THP algorithm, etc.). The index may be in the form of a bit code, for example, 10 means linear precoding, 11 means nonlinear precoding, and 111 means THP.

In step S201, the receiver precoding support capability information returned by the terminal according to the precoding type information supported by the network side device, where the receiver precoding support capability information includes a precoding type supported by the receiver and the network. The precoding type that the precoding type supported by the side device matches. If the precoding type supported by the receiver does not match the precoding type supported by the network side device, the receiver precoding support capability information may be blank information or may include an identifier for indicating unsupported. code. Receiver precoding support capability information can be used to indicate that the receiver only supports linear precoding, that the receiver only supports nonlinear precoding, or that the receiver supports both linear precoding and nonlinear precoding.

Preferably, in step S201, if the precoding type information supported by the network side device includes a specific nonlinear precoding algorithm, the receiver precoding support capability information returned by the terminal may include a nonlinear precoding algorithm supported by the receiver. For example, DPC, THP, VP, etc.

Preferably, in step S201, the receiver precoding support capability information returned by the terminal may be a precoding type indicator index, and each index corresponds to a precoding type (eg, linear precoding, nonlinear precoding, THP algorithm, The VP algorithm, the modulo-like algorithm, and the like, the index included in the receiver pre-coding support capability information indicates that the terminal supports the pre-coding type represented by the index. Index can be in the form of a bit code, for example 10 for linear precoding and 11 for nonlinear precoding. 111 denotes THP and the like.

Preferably, in step S201, the receiver precoding support capability information returned by the terminal includes a bit code corresponding to the precoding type supported by the network side device included in the receiver capability query request, and the bit The code includes a support bit code and a non-support bit code. The support bit code indicates that the receiver supports the corresponding pre-coding type, and the bit code indicates that the receiver does not support the corresponding pre-coding type. For example, a corresponding order of 1 indicates that the precoding type is supported, and a corresponding position of 0 indicates that the precoding type is not supported. Each bit code occupies only lbit, which can effectively save bandwidth.

In step S202, a precoding algorithm is selected according to the receiver precoding support capability information. In step S203, the data to be transmitted is precoded according to the precoding algorithm, and the precoded data is sent to the terminal.

Referring to FIG. 3, it is a flowchart of a third embodiment of a data communication method provided by the present invention, where the method includes:

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 by broadcast, multicast or unicast.

Preferably, in step S300, the receiver types matching the precoding algorithms supported by the network side device include a receiver supporting linear precoding, a receiver supporting nonlinear precoding, and simultaneously supporting linear precoding and nonlinear precoding. Encoded receiver.

Preferably, in step S300, if the receiver type matching the precoding algorithm supported by the network side device is a receiver supporting nonlinear precoding or a receiver supporting both linear precoding and nonlinear precoding, Receiver type information can also support receivers of a particular non-linear precoding type. For example, the receiver type information may include a DPC-capable receiver, a THP-enabled receiver, a VP-capable receiver, and the like. For another example, according to the requirement of the modulo operation by the nonlinear precoding algorithm supported by the network side device, the receiver type information may include a receiver supporting the modulo operation and a receiver not supporting the modulo operation.

Preferably, in step S300, the receiver type information that matches the precoding algorithm supported by the network side device may be a receiver type indicator index, and each index corresponds to one type of receiver (for example, linear precoding is supported). Receiver, receiver supporting nonlinear precoding, receiver supporting THP algorithm, etc.). Index can be in the form of a bit code, for example 10 means support for linear precoding The receiver, 11 denotes a receiver supporting nonlinear precoding, and 111 denotes a receiver supporting the THP algorithm and the like.

In step S301, the receiver precoding support capability information returned by the terminal according to the receiver type information matched with the precoding algorithm supported by the network side device, where the receiver precoding support capability information includes a receiver included in the terminal The type of receiver in the type that matches the type of receiver required by the network side device. The type of receiver required by the network side device is the type of receiver that matches the type of precoding supported by the network side device.

Preferably, in step S301, the receiver types returned by the terminal include a receiver supporting linear precoding, a receiver supporting nonlinear precoding, and a receiver supporting both linear precoding and nonlinear precoding.

Preferably, in step S301, if the receiver type required by the network side device is a receiver supporting nonlinear precoding or a receiver supporting both linear precoding and nonlinear precoding, the terminal returns, for example, the reception returned by the terminal. The machine type information may include a DPC-capable receiver, a THP-capable receiver, a VP-capable receiver, a receiver that supports modulo operation, and a receiver that does not support modulo operation.

Preferably, in step S301, the receiver precoding support capability information returned by the terminal may be a receiver type indicator index, and each index corresponds to a receiver type (for example, a receiver supporting linear precoding, supporting non-linear pre- The coded receiver, the receiver supporting the THP algorithm, the receiver supporting the modulo, etc.), the index included in the receiver precoding support capability information indicates that the terminal includes the receiver type represented by the index. The index may be in the form of a bit code, for example, 10 denotes a receiver supporting linear precoding, 11 denotes a receiver of nonlinear precoding, 111 denotes a receiver supporting the THP algorithm, and the like.

Preferably, in step S301, the receiver precoding support capability information includes a bit code, and the bit code and the receiver type included in the receiver capability query request match the type of the precoding supported by the network side device. Corresponding, that is, corresponding to the type of receiver required by the network side device. The bit code includes a support bit code and does not support a bit code. The support bit code indicates that the terminal includes a corresponding receiver type, and the bit code is not supported to indicate that the terminal does not include a corresponding receiver type. For example, a corresponding sequence of 1 indicates that the receiver type is included, and a corresponding position of 0 indicates that the receiver type is not included. Each bit code Only occupy 1bit, which can effectively save bandwidth.

In step S302, a precoding algorithm is selected according to the receiver precoding support capability information. In step S303, the data to be transmitted is precoded according to the precoding algorithm, and the precoded data is sent to the terminal.

Referring to FIG. 4, it is a flowchart of a fourth embodiment of a data communication method provided by the present invention, where the method includes:

At step S400, a receiver capability query request is sent to the terminal. Step S400 may be the same as step S100, S200 or S300.

In step S401, the receiver precoding support capability information of the terminal receiver is received. Step S401 can be the same as step S100, S201 or S301.

In step S402, a precoding algorithm is selected according to the receiver precoding support capability information and a preset precoding preference principle. The precoding optimization principles include: preferentially selecting the nonlinear priority principle of the nonlinear precoding algorithm and/or selecting the performance priority principle of the precoding algorithm with the best performance. The performance of different precoding algorithms can be obtained by pre-calculation, simulation, testing, and so on. Preferably, the performance prioritization principle comprises: selecting the best performing precoding algorithm according to the current channel state and the performance of various precoding algorithms in different preset channel states, and the performance of various precoding algorithms in different channel states may be Obtained by pre-calculation, simulation, testing, etc. By further selecting and selecting among the precoding algorithms supported by the receiver, it is beneficial to improve network throughput and improve communication quality of the system.

In step S403, the data to be transmitted is precoded according to the selected precoding algorithm, and the precoded data is sent to the terminal.

Referring to FIG. 5, it is a schematic structural diagram of a first embodiment of a network device provided by the present invention. The network device 50 may be a transmitter or a transmitting end in a communication system, including:

The terminal capability acquiring module 510 is configured to acquire receiver precoding support capability information of the terminal. The algorithm selection module 520 is configured to select a precoding algorithm according to the receiver precoding support capability information.

The data sending module 530 is configured to perform precoding on the data to be sent according to the precoding algorithm, and send the precoded data to the terminal.

The network side device provided by the embodiment of the present invention obtains the receiver precoding support capability information of the terminal, and then selects a precoding algorithm to send data according to the receiver precoding support capability information. Line precoding can avoid the erroneous reception of user data caused by the mismatch between the precoding algorithm implemented by the network side and the capability of the terminal receiver, and improve the accuracy and success rate of data communication.

Preferably, the receiver precoding support capability information received by the terminal capability acquisition module 510 includes a precoding type supported by the receiver, and the precoding type includes linear precoding and/or nonlinear precoding. For example, receiver precoding support capability information can be used to indicate that the receiver only supports linear precoding, that the receiver only supports nonlinear precoding, or that the receiver supports both linear precoding and nonlinear precoding.

Preferably, if the precoding type supported by the receiver includes nonlinear precoding, the receiver precoding support capability information received by the terminal capability acquisition module 510 may further include receiver capability information for nonlinear precoding. The receiver's support capability information for nonlinear precoding may include non-linear precoding algorithms supported by the receiver, such as DPC (Dirty Paper Coding), THP, VP, and the like. The receiver's support capability information for nonlinear precoding may also include receiver capability information for the modulo operation, such as the receiver supporting modulo or the receiver not supporting modulo.

Preferably, the receiver precoding support capability information received by the terminal capability acquiring module 510 may further include a receiver algorithm supported by the terminal. For example, linear receiver algorithms such as MRC (Maximum Ratio Combining), ZF (Zero-forcing), MMSE (Minimum Mean Squared Error), MMSE IRC (Interference Rejection Combining) , and ML (Maximum Likelihood), IC (Interference Cancellation), SD (Sphere Decoding, Sphere Decoding) and other nonlinear receiver algorithms. Since the precoding algorithms applicable to different receiver algorithms may be different, the network side device can further understand the receiver's ability to support the precoding algorithm by reporting the receiver algorithm supported by the terminal.

Preferably, the receiver precoding support capability information received by the terminal capability acquiring module 510 may be a precoding type indicator index, and each index corresponds to one type of precoding support capability information (eg, supporting linear precoding, supporting nonlinear precoding) And supporting the THP algorithm, etc., the index included in the receiver precoding support capability information indicates that the terminal supports the precoding capability represented by the index. The index may be in the form of a bit code, for example, 10 means linear precoding, 11 means nonlinear precoding, and 111 means THP.

The method for the network side device to obtain the receiver precoding support capability information of the terminal may be the terminal active reporting mode or the network side device query mode. When using the network side device query mode, The network side device may further include a query request sending module, configured to send a receiver capability query request to the terminal. The receiver capability query request can be sent by broadcast, multicast or unicast. The receiver capability query request may be a general query request for all capabilities of the receiver, or may be a query request specific to the receiver precoding capability. Preferably, the receiver capability query request may further include a network side device supporting capability for precoding.

FIG. 6 is a schematic structural diagram of a second embodiment of a network side device provided by the present invention. The network side device 60 includes a query request sending module 610, a terminal capability acquiring module 620, an algorithm selecting module 630, and a data sending module 640. The request sending module 610 includes a network side device precoding type sending module 611.

The network side device precoding type sending module 611 is configured to send, to the terminal, precoding type information supported by the network side device. The precoding type information supported by the network side device can be sent by broadcast, multicast or unicast.

Preferably, the precoding type supported by the network side device sent by the network side device precoding type transmitting module 611 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.

Preferably, if the precoding type supported by the network side device includes non-linear precoding, the precoding type information supported by the network side device sent by the network side device precoding type sending module 611 may further include the network side device supported by the network side device. Nonlinear precoding types, such as DPC, THP, VP, etc.

Preferably, the precoding type information supported by the network side device sent by the network side device precoding type sending module 611 may be a precoding type indicator index, and each index corresponds to one type of precoding support capability information (for example, supporting linear precoding) Coding, support for nonlinear precoding, support for THP algorithms, etc.). The index may be in the form of a bit code, for example, 10 means linear precoding, 11 means nonlinear precoding, and 111 means THP.

The terminal capability acquiring module 620 is configured to receive receiver precoding support capability information returned by the terminal according to precoding type information supported by the network side device, where the receiver precoding supports a precoding type of the capability bearer. If the precoding type supported by the receiver does not match the precoding type supported by the network side device, the receiver precoding support capability information may be blank information, or may include Used to indicate an identifier that is not supported.

Preferably, the precoding type received by the terminal capability acquisition module 620 may include linear precoding and/or nonlinear precoding. Receiver precoding support capability information can be used to indicate that the receiver only supports linear precoding, that the receiver only supports nonlinear precoding, or that the receiver supports both linear precoding and non-linear precoding.

Preferably, if the precoding type information supported by the network side device includes a specific nonlinear precoding algorithm, the receiver precoding support capability information received by the second terminal capability acquiring module 620 may include a nonlinear preamble supported by the receiver. Encoding algorithms such as DPC, THP, VP, etc.

Preferably, the receiver precoding support capability information received by the terminal capability acquisition module 620 may be a precoding type indicator index, and each index corresponds to a precoding type (eg, linear precoding, nonlinear precoding, THP algorithm, The VP algorithm, the modulo-like algorithm, and the like, the index included in the receiver pre-coding support capability information indicates that the terminal supports the pre-coding type represented by the index. The index may be in the form of a bit code, for example, 10 means linear precoding, 11 means nonlinear precoding, and 111 means THP or the like.

Preferably, the receiver precoding support capability information received by the terminal capability acquiring module 620 includes a bit code corresponding to a precoding type supported by the network side device included in the receiver capability query request, and the bit code The bit code is supported and the bit code is not supported. The bit code indicates that the receiver supports the corresponding precoding type. The bit code is not supported. The receiver does not support the corresponding precoding type. For example, a corresponding order of 1 indicates that the precoding type is supported, and a corresponding position of 0 indicates that the precoding type is not supported. Each bit code occupies only lbit, which can effectively save bandwidth.

The algorithm selection module 630 is configured to select a precoding algorithm according to the receiver precoding support capability information.

The data sending module 640 is configured to perform precoding on the data to be sent according to the precoding algorithm, and send the precoded data to the terminal.

FIG. 7 is a schematic structural diagram of a third embodiment of a network side device provided by the present invention. The network side device 70 includes a query request sending module 710, a terminal capability acquiring module 720, an algorithm selecting module 730, and a data sending module 740, where the query is performed. The request sending module 710 includes a network side device receiver demand sending module 711.

The network side device receiver requirement sending module 711 is configured to send to the terminal and the network side device Receiver type information that matches the precoding algorithm. Receiver type information that matches the precoding algorithm supported by the network side device can be transmitted by broadcast, multicast, or unicast.

Preferably, the receiver type that is sent by the network side device receiver requirement sending module 711 and matched with the precoding algorithm supported by the network side device includes a receiver supporting linear precoding, a receiver supporting nonlinear precoding, and simultaneous support. Linear precoding and nonlinear precoding receivers.

Preferably, if the receiver type matching the precoding algorithm supported by the network side device is a receiver supporting nonlinear precoding or a receiver supporting both linear precoding and nonlinear precoding, the network side device receiver The receiver type information transmitted by the demand transmitting module 711 can also support a receiver of a specific nonlinear precoding type. For example, the receiver type information may include a DPC-capable receiver, a THP-capable receiver, a VP-capable receiver, and the like. For another example, the receiver type information may include a receiver supporting a modulo operation and a receiver not supporting a modulo operation according to a requirement of a modulo operation by a nonlinear precoding algorithm supported by the network side device.

Preferably, the receiver type information that is sent by the network side device receiver requirement sending module 711 and matched with the precoding algorithm supported by the network side device may be a receiver type indicator index, and each index corresponds to one receiver type. (eg receivers that support linear precoding, receivers that support nonlinear precoding, receivers that support the THP algorithm, etc.). The index may be in the form of a bit code, for example, 10 denotes a receiver supporting linear precoding, 11 denotes a receiver supporting nonlinear precoding, and 111 denotes a receiver supporting the THP algorithm.

The terminal capability obtaining module 720 is configured to receive receiver precoding support capability information returned by the terminal according to the receiver type information matched by the precoding algorithm supported by the network side device, where the receiver precoding support capability information includes the terminal The type of receiver included in the receiver type that matches the type of receiver required by the network side device. The type of receiver required by the network side device is the type of receiver that matches the type of precoding supported by the network side device.

Preferably, the receiver type information received by the terminal capability acquisition module 720 includes a receiver supporting linear precoding, a receiver supporting nonlinear precoding, and a receiver supporting both linear precoding and nonlinear precoding.

Preferably, if the receiver type required by the network side device is a receiver supporting nonlinear precoding or a receiver supporting both linear precoding and nonlinear precoding, the receiver included in the terminal received by the terminal capability acquiring module 720 Type information may also include connections that support a particular non-linear precoding type Received. For example, the receiver type information included in the terminal received by the terminal capability acquisition module 720 may include a DPC-capable receiver, a TPP-capable receiver, a VP-capable receiver, a receiver that supports modulo operation, and does not support modulo operation. Receiver, etc.

Preferably, the receiver precoding support capability information received by the terminal capability acquisition module 720 may be a receiver type indicator index, and each index corresponds to a receiver type (for example, a receiver supporting linear precoding, supporting nonlinear pre- The coded receiver, the receiver supporting the THP algorithm, the receiver supporting the modulo, etc.), the index included in the receiver precoding support capability information indicates that the terminal includes the receiver type represented by the index. The index may be in the form of a bit code, for example, 10 denotes a receiver supporting linear precoding, 11 denotes a receiver of nonlinear precoding, 111 denotes a receiver supporting the THP algorithm, and the like.

Preferably, the receiver precoding support capability information received by the terminal capability acquiring module 720 includes a bit code, and the bit code and the receiver type included in the receiver capability query request match the type of the precoding supported by the network side device. - Corresponding, that is, corresponding to the type of receiver required by the network side device. The bit code includes a support bit code and does not support a bit code. The support bit code indicates that the terminal includes a corresponding receiver type, and the bit code is not supported to indicate that the terminal does not include a corresponding receiver type. For example, a corresponding sequence of 1 indicates that the receiver type is included, and a corresponding position of 0 indicates that the receiver type is not included. Each bit code occupies only lbit, which can effectively save bandwidth.

The algorithm selection module 730 is configured to select a precoding algorithm according to the receiver precoding support capability information.

The data sending module 740 is configured to perform precoding on the data to be sent according to the precoding algorithm, and send the precoded data to the terminal.

Preferably, in the embodiment shown in FIGS. 5-7, the algorithm selection module 520, 630 or 730 can select the precoding algorithm according to the receiver precoding support capability information and the preset precoding preference principle. The precoding optimization principle includes: preferentially selecting a nonlinear priority principle of the nonlinear precoding algorithm and/or selecting a performance priority principle of the best performing precoding algorithm. The performance of different precoding algorithms can be obtained by pre-calculation, simulation, testing, and the like. Preferably, the performance priority principle comprises: selecting the best performing precoding algorithm according to the current channel state and the performance of various precoding algorithms in different preset channel states, and the performance of various precoding algorithms in different channel states may be Obtained by pre-calculation, simulation, testing, etc. By further selecting among the precoding algorithms supported by the receiver Selecting, is conducive to improving network throughput and improving the communication quality of the system.

FIG. 8 is a flowchart of a first embodiment of a method for data communication on a terminal side according to the present disclosure. The method includes:

In step S800, the receiver precoding support capability information is sent to the network side device, so that the network side device selects the precoding algorithm to precode the data to be transmitted according to the receiver precoding support capability information.

In step S801, the pre-coded data sent by the network side device is received, and the data is decoded according to the precoding algorithm.

The data communication method provided by the embodiment of the present invention sends the receiver precoding support capability information to the network side device, so that the network side device selects the precoding algorithm to precode the data according to the precoding support capability information of the receiver, thereby avoiding the cause The error reception of user data caused by the mismatch between the precoding algorithm implemented on the network side and the capability of the terminal receiver improves the accuracy and success rate of data communication.

The receiver capability query request and receiver precoding support capability information have been described in detail with reference to Fig. 1, and will not be described again here.

The method for the terminal to report the receiver precoding support capability information to the network side device may be the terminal active reporting manner or the network side device query manner. When the network side device query method is adopted, before step S800, the method may further include: receiving a receiver capability query request from the network side device. The receiver capability query request can be sent by broadcast, multicast or unicast. The receiver capability query request can be a general query request for all capabilities of the receiver, or a query request specific to the receiver precoding capability. Preferably, the receiver capability query request may further include a network side device supporting capability for precoding.

Referring to FIG. 9, FIG. 9 is a flowchart of a second embodiment of a terminal-side data communication method provided by the present invention, where the method includes:

In step S900, a receiver capability query request sent by the network side device is received, where the receiver capability query request includes precoding type information supported by the network side device.

In step S901, the precoding type supported by the receiver is queried according to the receiver capability query request, and a precoding type matching the precoding type supported by the network side device in the precoding type supported by the receiver is used as Receiver precoding support capability information is sent to the network side device to enable the network The network side device selects a precoding algorithm to precode the data to be transmitted according to the receiver precoding support capability information.

In step S902, the pre-coded data sent by the network side device is received, and the data is decoded according to the precoding algorithm.

The precoding type information and the receiver precoding support capability information supported by the network side device have been described in detail with reference to FIG. 2, and details are not described herein again.

FIG. 10 is a flowchart of a third embodiment of a method for data communication on a terminal side according to the present disclosure. The method includes:

In step S1000, receiving a receiver capability query request sent by the network side device, where the receiver capability query request includes a receiver type message that matches a precoding type supported by the network side device, in step S1001, according to the receiver. The capability query request queries the receiver type included in the terminal, and transmits the receiver type that matches the receiver type required by the network side device among the receiver types included in the terminal as the receiver precoding support capability information to the network side. And a device, configured to enable the network side device to perform precoding on the data to be sent according to the receiver precoding support capability information selection precoding algorithm.

In step S1002, the pre-coded data sent by the network side device is received, and the data is decoded according to the precoding algorithm.

The receiver type information and the receiver precoding support capability information that match the precoding type supported by the network side device have been described in detail with reference to FIG. 3, and are not described herein again.

Referring to FIG. 11, which is a schematic structural diagram of a first embodiment of a terminal provided by the present invention, the terminal 11 includes:

The terminal capability sending module 1110 is configured to send the receiver precoding support capability information to the network side device, so that the network side device selects a precoding algorithm to precode the data to be sent according to the receiver precoding support capability information.

The data receiving module 1120 is configured to receive pre-coded data sent by the network side device, and decode the data according to the precoding algorithm.

The terminal provided by the embodiment of the present invention sends the receiver precoding support capability information to the network side device, so that the network side device selects the precoding algorithm to send according to the precoding support capability information of the receiver. The data is pre-coded to avoid erroneous reception of user data caused by mismatch between the precoding algorithm implemented by the network side and the capability of the terminal receiver, thereby improving the accuracy and success rate of data communication.

The receiver capability query request and the receiver precoding support capability information have been described in detail with reference to FIG. 5, and are not described here.

The method for the terminal to report the receiver precoding support capability information to the network side device may be the terminal active reporting manner or the network side device query manner. When the network side device query method is adopted, the terminal may further include a query request receiving module, configured to receive a receiver capability query request from the network side device. The receiver capability query request may be a general query request for all capabilities of the receiver, or may be a query request specific to the receiver precoding capability. Preferably, the receiver capability query request may further include a network side device supporting capability for precoding.

Referring to FIG. 12, it is a schematic structural diagram of a second embodiment of a terminal sending module provided by the present invention. The terminal sending module 12 includes a query request receiving module 1210, a terminal capability sending module 1220, and a data receiving module 1230. The terminal capability sending module 1220 includes The precoding type transmitting module 1221 is matched.

The query request receiving module 1210 is configured to receive a receiver capability query request sent by the network side device, where the receiver capability query request includes precoding type information supported by the network side device.

The matching precoding type sending module 1221 is configured to query the precoding type supported by the receiver according to the receiver capability query request, and compare the precoding type supported by the receiver with the precoding type supported by the network side device. The matched precoding type is sent to the network side device as the receiver precoding support capability information, so that the network side device selects the precoding algorithm to precode the data according to the receiver precoding support capability information.

The data receiving module 1230 is configured to receive pre-coded data sent by the network side device, and decode the data according to the precoding algorithm.

The precoding type information and the receiver precoding support capability information supported by the network side device have been described in detail with reference to FIG. 6, and are not described herein again.

Referring to FIG. 13, FIG. 13 is a schematic structural diagram of a third embodiment of a terminal provided by the present invention. The terminal 13 includes a query request receiving module 1310, a terminal capability sending module 1320, and a data receiving module 1330. The terminal capability sending module 1320 includes a matching receiver type. The sending module 1321.

The query request receiving module 1310 is configured to receive a receiver capability query sent by the network side device. The receiver capability query request includes receiver type information that matches a precoding type supported by the network side device.

The matching receiver type sending module 1321 is configured to query the receiver type included in the terminal according to the receiver capability query request, and match the receiver type included in the terminal with the receiver type required by the network side device. The receiver type is sent to the network side device as receiver precoding support capability information, so that the network side device selects a precoding algorithm to precode the data to be transmitted according to the receiver precoding support capability information.

The data receiving module 1330 is configured to receive pre-coded data sent by the network side device, and decode the data according to the precoding algorithm.

Receiver type information and receiver precoding support capability information matching the precoding type supported by the network side device have been described in detail with reference to Fig. 7, and will not be described again.

The present invention further provides a data communication system, including a terminal and a network side device described in any of the above embodiments, where the network side device can obtain receiver precoding support capability information of all terminals after the terminal accesses the network, and then based on different The receiver precoding of the terminal supports the capability information, selects a suitable precoding algorithm for it, and performs effective data transmission.

A person skilled in the art can understand that all or part of the process of implementing the above embodiment method can be completed by a computer program to instruct related hardware, and the program can be stored in a computer readable storage medium, the program When executed, the flow of an embodiment of the methods as described above may be included. The storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

The above is only a preferred embodiment of the present invention, and of course, the scope of the present invention is not limited thereto, and those skilled in the art can understand all or part of the process of implementing the above embodiments, and according to the present invention. The equivalent changes required are still within the scope of the invention.

Claims

Rights request

A data communication method, comprising:

Obtaining receiver precoding support capability information of the terminal;

The data communication method according to claim 1, wherein before the step of acquiring the receiver precoding support capability information of the terminal, the method further includes:

Transmitting a receiver capability query request to the terminal for requesting acquisition of receiver precoding support capability information of the terminal.

The precoding method according to claim 2, wherein the receiver capability query request includes precoding type information supported by the network device, and the receiver precoding supports a precoding type of the capability.

The precoding method according to claim 2, wherein the receiver precoding support capability query request includes receiver type information that matches a precoding type supported by a network side device, the receiver The precoding support capability information includes a receiver type of a receiver type included in the terminal that matches a receiver type required by the network side device.

The data communication method according to any one of claims 1 to 4, wherein the step of selecting a precoding algorithm according to the receiver precoding support capability information comprises:

The precoding algorithm is selected according to the receiver precoding support capability information and a preset precoding preference principle.

6. A data communication method, comprising:

Transmitting receiver precoding support capability information to the network side device, so that the network side device according to the The receiver precoding support capability information selection precoding algorithm precodes the data to be transmitted; receives the precoded data sent by the network side device, and decodes the data according to the precoding algorithm.

The data communication method according to claim 6, wherein before the step of transmitting the receiver precoding support capability information to the network side device, the method further includes:

Receiving a receiver capability query request from the network side device, the query is used to request acquisition of receiver precoding support capability information of the terminal.

The data communication method according to claim 7, wherein the receiver capability query request includes precoding type information supported by the network side device;

The step of transmitting the receiver precoding support capability information to the network side device is specifically: querying, according to the receiver precoding support capability query request, a precoding type supported by the receiver, and using the precoding type supported by the receiver The precoding type matching the precoding type supported by the network side device is sent to the network side device as the receiver precoding support capability information.

The data communication method according to claim 7, wherein the receiver capability query request includes receiver type information that matches a precoding type supported by the network side device; and the sending is sent to the network side device. The step of precoding the support capability information by the receiver is specifically: querying, according to the receiver precoding support capability query request, the type of the receiver included in the terminal, and receiving the required type of the receiver included in the terminal and the network side device The receiver type matching the receiver type is sent to the network side device as the receiver precoding support capability information.

10. A network side device, comprising:

The network side device according to claim 10, wherein the network side device further includes:

And a query request sending module, configured to send a receiver capability query request to the terminal, to request to acquire receiver precoding support capability information of the terminal.

The network side device according to claim 11, wherein the query request sending module specifically includes a network side device precoding type sending module, and the network side device precoding type sending module is configured to send a network to the terminal. The type of precoding supported by the side device;

The receiver precoding support capability information includes a precoding type of a precoding type supported by the receiver that matches a precoding type supported by the network side device.

The network side device according to claim 11, wherein the query request sending module specifically includes a network side device receiver demand sending module, and the network side device receiver demand sending module is configured to send and send to the terminal The type of receiver that the precoding algorithm supported by the network side device matches;

The receiver precoding support capability information includes a receiver type of a receiver type included in the terminal that matches a receiver type required by the network side device.

14. A terminal, comprising:

The terminal according to claim 14, wherein the terminal further comprises: a query request receiving module, configured to receive a receiver capability query request from the network side device.

The terminal according to claim 15, wherein the receiver capability query request includes precoding type information supported by the network side device;

The terminal capability sending module specifically includes:

a matching precoding type sending module, configured to query a precoding type supported by the receiver according to the receiver precoding support capability query request, and precoding the precoding type supported by the receiver and the network side device The type-matched precoding type is sent to the network side device as receiver precoding support capability information.

The data communication method according to claim 15, wherein the receiver capability query request includes receiver type information that matches a precoding type supported by the network side device; Includes:

And a matching receiver type sending module, configured to query, according to the receiver precoding support capability query request, a receiver type included in the terminal, and compare a receiver type included in the terminal with a receiver type required by the network side device The matched receiver type is sent to the network side device as receiver precoding support capability information.

A data communication system, comprising: a network side device and a terminal, wherein the network side device comprises:

The terminal includes: