CN103312445B - Data communication method, system, network side equipment and terminal - Google Patents

Abstract

The embodiment of the present invention discloses a data communication method, including: obtaining receiver precoding support capability information of a terminal; selecting a precoding algorithm according to the receiver precoding support capability information; Precoding, and sending the precoded data to the terminal. The embodiment of the invention also discloses a network side device, a terminal and a data communication system. By adopting the present invention, it is possible to avoid the inability to correctly receive user data due to the mismatch between the precoding algorithm implemented on the network side and the capability of the terminal receiver, and improve the accuracy and success rate of data communication.

Description

A data communication method, system, network side device and terminal

technical field

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

A large number of theoretical studies and experimental results show that the 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.

In the MU-MIMO system, the transmitter uses user scheduling technology to select some users with better channel characteristics for multi-user pairing; then uses precoding technology to preprocess the data signals of multiple paired users to fully suppress The interference of other users' transmitted signals on the target user's received signal.

According to whether a nonlinear operation is introduced in the precoding process, the precoding technology is divided into linear precoding and nonlinear precoding. In the current LTE R9/R10 standard, linear precoding has been introduced. Although the implementation of linear precoding is simple and the hardware requirements are not high, it will have a great impact on the performance of the transmitted signal. In contrast, although the algorithm and implementation of nonlinear precoding are more complicated, it has little impact on the performance of transmitted signals. Today, with more and more emphasis on user experience, the application of nonlinear precoding algorithms in the field of communication has been greatly improved. received widespread attention. With the continuous improvement of hardware processing capabilities, more and more achievable nonlinear precoding technologies have appeared in people's daily applications. 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 different, 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 makes it impossible to further improve the performance of signal transmission.

Contents of the invention

An embodiment of the present invention provides a data communication method. The network-side device can obtain the support capability of the terminal receiver for the precoding scheme, so as to select an appropriate precoding scheme.

An embodiment of the present 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;

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

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

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

receiving the precoded data sent by the network side device, and decoding the data according to the precoding algorithm.

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

A terminal capability acquisition module, configured to acquire receiver precoding support capability information of the terminal;

An algorithm selection module, configured to select a precoding algorithm according to the receiver precoding support capability information;

A data sending module, configured to precode 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 according to the receiver precoding support capability information to precode the data to be sent;

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

Correspondingly, an embodiment of the present invention also provides a data communication system, including a network side device and a terminal, and the network side device includes:

A terminal capability acquisition module, configured to acquire receiver precoding support capability information of the terminal;

An algorithm selection module, configured to select a precoding algorithm according to the receiver precoding support capability information;

A data sending module, configured to precode the data to be sent according to the precoding algorithm, and send the precoded data to the terminal;

The terminals include:

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 according to the receiver precoding support capability information to precode the data to be sent;

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

Implementing the embodiment of the present invention has the following beneficial effects: 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 the network-side implementation The wrong reception of user data caused by the mismatch between the advanced precoding algorithm and the capability of the terminal receiver improves the accuracy and success rate of data communication.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

FIG. 1 is a flow chart of the first embodiment of the network-side data communication method provided by the present invention;

Fig. 2 is a flow chart of the second embodiment of the network side data communication method provided by the present invention;

FIG. 3 is a flowchart of a third embodiment of the network-side data communication method provided by the present invention;

FIG. 4 is a flowchart of a fourth embodiment of the 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;

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

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

FIG. 8 is a flow chart of the first embodiment of the terminal-side data communication method provided by the present invention;

FIG. 9 is a flow chart of the second embodiment of the terminal-side data communication method provided by the present invention;

FIG. 10 is a flow chart of the third embodiment of the 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;

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

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

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

Please refer to Fig. 1, which is a flow chart of the first embodiment of the data communication method provided by the present invention, including:

S100. Acquire receiver precoding support capability information of a terminal.

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

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

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 terminal receiver improves the accuracy and success rate of data communication.

Preferably, in step S100, the receiver precoding support capability information includes the precoding type supported by the receiver, and the precoding type includes linear precoding and/or nonlinear precoding. For example, the receiver precoding support capability information may be used to indicate that the receiver only supports linear precoding, the receiver only supports nonlinear precoding, or the receiver supports both linear precoding and nonlinear precoding.

Preferably, in step S100, if the type of precoding supported by the receiver includes nonlinear precoding, the receiver precoding support capability information may also include receiver support capability information for nonlinear precoding. The receiver's support capability information for nonlinear precoding may include nonlinear precoding algorithms supported by the receiver, such as DPC (Dirty Paper Coding, dirty paper coding), THP, VP, and the like. The receiver's support capability information for nonlinear precoding may also include the receiver's support capability information for modulo calculation, for example, the receiver supports modulo calculation or the receiver does not support modulo calculation.

Preferably, in step S100, the receiver precoding support capability information may also include receiver algorithms supported by the terminal. For example, linear receiver algorithms such as MRC (Maximum Ratio Combining, maximum ratio combining), ZF (Zero-forcing, zero forcing), MMSE (Minimum Mean Squared Error, minimum mean square error), MMSE IRC (Interference Rejection Combining, interference suppression combining) , and ML (Maximum Likelihood, maximum similarity), IC (Interference Cancellation, interference cancellation), SD (Sphere Decoding, spherical decoding) and other nonlinear receiver algorithms. Since the precoding algorithms applicable to different receiver algorithms may be different, by reporting the receiver algorithm supported by the terminal, the network side device can further understand the receiver's support capability for the precoding algorithm.

Preferably, in step S100, the receiver precoding support capability information may be a precoding type indicator index, and each index corresponds to a type of precoding support capability information (such as support for linear precoding, support for nonlinear precoding, support for 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. index can be in the form of bit codes, for example, 10 indicates linear precoding, 11 indicates nonlinear precoding, and 111 indicates THP, etc.

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 may be a general query request for all receiver capabilities, or a specific query request for the receiver precoding capability. More preferably, the receiver capability query request may also include the capability of the network side device to support precoding.

The method for the network-side device to obtain the receiver precoding support capability information of the terminal can be either actively reported by the terminal or inquired by the network-side device. Figure 2-4 is an example of the query method for the network-side device.

Please refer to Fig. 2, which is a flowchart of the second embodiment of the data communication method provided by the present invention, 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 sent via broadcast, multicast or unicast.

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.

Preferably, in step S200, if the precoding type supported by the network side device includes nonlinear precoding, the precoding type information supported by the network side device may also include the 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 a kind of precoding support capability information (such as supporting linear precoding, supporting nonlinear precoding , support THP algorithm, etc.). index can be in the form of bit codes, for example, 10 indicates linear precoding, 11 indicates nonlinear precoding, and 111 indicates THP, etc.

In step S201, receiving the receiver precoding support capability information returned by the terminal according to the precoding type information supported by the network side equipment, the receiver precoding support capability information includes the precoding type supported by the receiver and the network The precoding type that matches the precoding type supported by the side device. If the precoding type supported by the receiver does not match the precoding type supported by the network side device, the receiver's precoding support capability information may be blank information, or may include an identifier used to indicate that it is not supported.

Preferably, in step S201, the precoding type may include linear precoding and/or nonlinear precoding. The receiver precoding support capability information may be used to indicate that the receiver only supports linear precoding, the receiver only supports nonlinear precoding, or 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 the nonlinear precoding algorithm supported by the receiver , such as 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, each index corresponds to a precoding type (such as linear precoding, nonlinear precoding, THP algorithm, VP algorithm, supported modulus algorithm, etc.), the index contained in the receiver precoding support capability information indicates that the terminal supports the precoding type represented by the index. index can be in the form of bit codes, for example, 10 indicates linear precoding, 11 indicates nonlinear precoding, and 111 indicates THP, etc.

Preferably, in step S201, the receiver precoding support capability information returned by the terminal includes a bit code, and the bit code is in one-to-one correspondence with the precoding types supported by the network side equipment included in the receiver capability query request. The codes include supported bit codes and unsupported bit codes, the supported bit codes indicate that the receiver supports the corresponding precoding type, and the unsupported bit codes indicate that the receiver does not support the corresponding precoding type. For example, 1 in the corresponding sequence indicates that the precoding type is supported, and 0 in the corresponding position indicates that the precoding type is not supported. Each bit code only occupies 1 bit, 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.

Please refer to FIG. 3, which is a flow chart of the third embodiment of the data communication method provided by the present invention. 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 via broadcast, multicast or unicast.

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.

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 precoding, then the The receiver type information may also support receivers of a particular nonlinear precoding type. For example, the receiver type information may include a receiver supporting DPC, a receiver supporting THP, a receiver supporting VP, and the like. For another example, according to the requirement of the nonlinear precoding algorithm supported by the network side device for the modulo operation, the receiver type information may include receivers supporting the modulo operation and receivers not supporting the modulo operation.

Preferably, in step S300, the receiver type information matching the precoding algorithm supported by the network side equipment may be a receiver type indicator index, each index corresponds to a receiver type (for example, a receiver type that supports linear precoding receivers, receivers supporting nonlinear precoding, receivers supporting THP algorithms, etc.). index can be in the form of bit codes, for example, 10 indicates a receiver supporting linear precoding, 11 indicates a receiver supporting nonlinear precoding, and 111 indicates a receiver supporting THP algorithm, etc.

In step S301, receiving the receiver precoding support capability information returned by the terminal according to the receiver type information matching the precoding algorithm supported by the network side equipment, the receiver precoding support capability information includes the receiver included in the terminal In the type, the receiver type matches the receiver type required by the network side device. The receiver type required by the network side device is the receiver type matching the precoding type supported by the network side device.

Preferably, in step S301, the receiver type returned by the terminal includes 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 that supports nonlinear precoding or a receiver that supports both linear precoding and nonlinear precoding, the terminal returns the receiver contained in itself Types may also include receivers that support a particular type of nonlinear precoding. For example, the receiver type information returned by the terminal may include receivers supporting DPC, receivers supporting THP, receivers supporting VP, receivers supporting modulo operations, and receivers not supporting modulo operations.

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 (such as a receiver supporting linear precoding, a receiver supporting nonlinear precoding, etc. coded receiver, receiver supporting THP algorithm, receiver supporting modulus, etc.), the index included in the receiver precoding support capability information indicates that the terminal includes the receiver type represented by the index. index can be in the form of bit codes, for example, 10 indicates a receiver supporting linear precoding, 11 indicates a receiver supporting nonlinear precoding, and 111 indicates a receiver supporting THP algorithm, etc.

Preferably, in step S301, the receiver precoding support capability information includes a bit code, and the bit code matches the receiver type contained in the receiver capability query request and the precoding type supported by the network side device—— Correspondence, that is, one-to-one correspondence with the receiver type required by the network side equipment. The bitcodes include supported bitcodes and unsupported bitcodes, the supported bitcodes indicate that the terminal includes the corresponding receiver type, and the unsupported bitcodes indicate that the terminal does not include the corresponding receiver type. For example, 1 in the corresponding order indicates that the receiver type is included, and 0 in the corresponding position indicates that the receiver type is not included. Each bit code only occupies 1 bit, 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.

Please refer to FIG. 4, which is a flow chart of the fourth embodiment of the data communication method provided by the present invention. The method includes:

In 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, receiver precoding support capability information of a terminal receiver is received. Step S401 may 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 preset precoding preference principles. Wherein, the precoding preference principle includes: a nonlinear priority principle of preferentially selecting a nonlinear precoding algorithm and/or a performance priority principle of selecting a precoding algorithm with the best performance, and the like. The performance of different precoding algorithms can be obtained through pre-calculation, simulation, testing and other methods. Preferably, the performance priority principle includes: selecting the precoding algorithm with the best performance according to the current channel state and the performance of various precoding algorithms under different channel states, and the performance of various precoding algorithms under different channel states can be Obtained through pre-calculation, simulation, testing, etc. By further selecting the best among the precoding algorithms supported by the receiver, it is beneficial to improve the network throughput and improve the 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.

Please refer to FIG. 5, which is a schematic structural diagram of a first embodiment of a network device provided by the present invention. The network device may be a transmitter or a transmitter in a communication system, including:

The terminal capability acquisition module 510 is configured to acquire receiver precoding support capability information of the terminal.

An algorithm selection module 520, configured to select a precoding algorithm according to the receiver precoding support capability information.

The data sending module 530 is configured to precode 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 the precoding algorithm to precode the data to be sent according to the receiver precoding support capability information, which can avoid problems caused by the network side. The incorrect reception of user data caused by the mismatch between the precoding algorithm and the capability of the terminal receiver improves the accuracy and success rate of data communication.

Preferably, the receiver precoding support capability information received by the terminal capability acquisition module 510 includes the precoding type supported by the receiver, and the precoding type includes linear precoding and/or nonlinear precoding. For example, the receiver precoding support capability information may be used to indicate that the receiver only supports linear precoding, the receiver only supports nonlinear precoding, or 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 also include receiver support capability information for nonlinear precoding. The receiver's support capability information for nonlinear precoding may include nonlinear precoding algorithms supported by the receiver, such as DPC (Dirty Paper Coding, dirty paper coding), THP, VP, and the like. The receiver's support capability information for nonlinear precoding may also include the receiver's support capability information for modulo calculation, for example, the receiver supports modulo calculation or the receiver does not support modulo calculation.

Preferably, the receiver precoding support capability information received by the terminal capability acquisition module 510 may also include receiver algorithms supported by the terminal. For example, linear receiver algorithms such as MRC (Maximum Ratio Combining, maximum ratio combining), ZF (Zero-forcing, zero forcing), MMSE (Minimum Mean Squared Error, minimum mean square error), MMSE IRC (Interference Rejection Combining, interference suppression combining) , and ML (Maximum Likelihood, maximum similarity), IC (InterferenceCancellation, interference cancellation), SD (Sphere Decoding, spherical decoding) and other nonlinear receiver algorithms. Since the precoding algorithms applicable to different receiver algorithms may be different, by reporting the receiver algorithm supported by the terminal, the network side device can further understand the receiver's support capability for the precoding algorithm.

Preferably, the receiver precoding support capability information received by the terminal capability acquisition module 510 may be a precoding type indicator index, each index corresponds to a type of precoding support capability information (for example, support linear precoding, support nonlinear precoding , support THP algorithm, etc.), the index contained in the receiver precoding support capability information indicates that the terminal supports the precoding capability represented by the index. index can be in the form of bit codes, for example, 10 indicates linear precoding, 11 indicates nonlinear precoding, and 111 indicates THP, etc.

The method for the network-side device to acquire the receiver precoding support capability information of the terminal may be a method of actively reporting by the terminal, or a method of querying by the network-side device. When the network-side device query mode is adopted, 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 receiver capabilities, or a specific query request for the receiver precoding capability. Preferably, the receiver capability query request may also include the capability of the network side device to support precoding.

Please refer to FIG. 6, which is a schematic structural diagram of the second embodiment of the network side device provided by the present invention, including a query request sending module 610, a terminal capability acquisition module 620, an algorithm selection module 630, and a data sending module 640, wherein the query request sending module 610 It includes a network side device precoding type sending module 611 .

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

Preferably, the precoding type supported by the network side device sent by the network side device precoding type sending 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 information about the precoding type supported by the network side device sent by the network side device precoding type sending module 611 may also include the precoding type supported by the network side device Non-linear precoding type, such as DPC, THP, VP, etc.

Preferably, the precoding type information supported by the network side device sent by the precoding type sending module 611 of the network side device may be a precoding type indicator index, and each index corresponds to a kind of precoding support capability information (such as supporting linear precoding encoding, support nonlinear precoding, support THP algorithm, etc.). index can be in the form of bit codes, for example, 10 indicates linear precoding, 11 indicates nonlinear precoding, and 111 indicates THP, etc.

A terminal capability acquisition module 620, configured to receive 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 the precoding supported by the receiver The precoding type in the type matches the precoding type supported by the network side device. If the precoding type supported by the receiver does not match the precoding type supported by the network side device, the receiver's precoding support capability information may be blank information, or may include an identifier used to indicate that it is not supported.

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

Preferably, if the precoding type information supported by the network side equipment includes a specific nonlinear precoding algorithm, the receiver precoding support capability information received by the second terminal capability acquisition module 620 may include the nonlinear precoding 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, each index corresponds to a precoding type (such as linear precoding, nonlinear precoding, THP algorithm, VP algorithm, supported modulus algorithm, etc.), the index contained in the receiver precoding support capability information indicates that the terminal supports the precoding type represented by the index. index can be in the form of bit codes, for example, 10 indicates linear precoding, 11 indicates nonlinear precoding, and 111 indicates THP, etc.

Preferably, the receiver precoding support capability information received by the terminal capability acquisition module 620 includes a bit code, and the bit code is in one-to-one correspondence with the precoding types supported by the network side equipment contained in the receiver capability query request, and the bit code It includes supporting bitcodes and not supporting bitcodes. Supporting bitcodes means that the receiver supports the corresponding precoding type, and not supporting bitcodes means that the receiver does not support the corresponding precoding type. For example, 1 in the corresponding sequence indicates that the precoding type is supported, and 0 in the corresponding position indicates that the precoding type is not supported. Each bit code only occupies 1 bit, which can effectively save bandwidth.

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

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

Please refer to FIG. 7, which is a schematic structural diagram of the third embodiment of the network side device provided by the present invention, including a query request sending module 710, a terminal capability acquisition module 720, an algorithm selection module 730, and a data sending module 740, wherein the query request sending module 710 It includes a network side device receiver request sending module 711 .

The receiver requirement sending module 711 of the network side device is configured to send receiver type information matching the precoding algorithm supported by the network side device to the terminal. The receiver type information matching the precoding algorithm supported by the network side device can be sent in a broadcast, multicast or unicast manner.

Preferably, the receiver type sent by the network-side device receiver requirement sending module 711 that matches the precoding algorithm supported by the network-side device includes a receiver that supports linear precoding, a receiver that supports nonlinear precoding, and a receiver that supports both Receivers for linear precoding and nonlinear precoding.

Preferably, if the receiver type that matches the precoding algorithm supported by the network side device is a receiver that supports nonlinear precoding or a receiver that supports both linear precoding and nonlinear precoding, then the network side device receiver The receiver type information sent by the requirement sending module 711 may also support a receiver of a specific nonlinear precoding type. For example, the receiver type information may include a receiver supporting DPC, a receiver supporting THP, a receiver supporting VP, and the like. For another example, according to the requirement of the nonlinear precoding algorithm supported by the network side device for the modulo operation, the receiver type information may include receivers supporting the modulo operation and receivers not supporting the modulo operation.

Preferably, the receiver type information sent by the receiver requirement sending module 711 of the network side device that matches the precoding algorithm supported by the network side device may be a receiver type indicator index, and each index corresponds to a receiver type (For example, a receiver supporting linear precoding, a receiver supporting nonlinear precoding, a receiver supporting THP algorithm, etc.). index can be in the form of bit codes, for example, 10 indicates a receiver supporting linear precoding, 11 indicates a receiver supporting nonlinear precoding, and 111 indicates a receiver supporting THP algorithm, etc.

The terminal capability acquisition module 720 is configured to receive the receiver precoding support capability information returned by the terminal according to the receiver type information matching the precoding algorithm supported by the network side equipment, and the receiver precoding support capability information includes the terminal's precoding support capability information Among the included receiver types, the receiver type that matches the receiver type required by the network side device. The receiver type required by the network side device is the receiver type matching the precoding type supported by the network side device.

Preferably, the receiver type information received by the terminal capability acquiring 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 that supports nonlinear precoding or a receiver that supports both linear precoding and nonlinear precoding, the receiver included in the terminal received by the terminal capability acquisition module 720 Type information may also include receivers that support a particular nonlinear precoding type. For example, the receiver type information contained in the terminal received by the terminal capability acquisition module 720 may include receivers that support DPC, receivers that support THP, receivers that support VP, receivers that support modulo operations, and receivers that do not support modulo operations. receiver, etc.

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

Preferably, the receiver precoding support capability information received by the terminal capability acquisition module 720 includes a bit code, and the bit code matches the receiver type contained in the receiver capability query request and the precoding type supported by the network side equipment One-to-one correspondence, that is, one-to-one correspondence with the receiver types required by the network side equipment. The bitcodes include supported bitcodes and unsupported bitcodes, the supported bitcodes indicate that the terminal includes the corresponding receiver type, and the unsupported bitcodes indicate that the terminal does not include the corresponding receiver type. For example, 1 in the corresponding order indicates that the receiver type is included, and 0 in the corresponding position indicates that the receiver type is not included. Each bit code only occupies 1 bit, which can effectively save bandwidth.

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

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

Preferably, in the embodiments shown in FIGS. 5-7 , the algorithm selection module 520 , 630 or 730 can select a precoding algorithm according to receiver precoding support capability information and preset precoding preference principles. Wherein, the precoding preference principle includes: a nonlinear priority principle of preferentially selecting a nonlinear precoding algorithm and/or a performance priority principle of selecting a precoding algorithm with the best performance, and the like. The performance of different precoding algorithms can be obtained through pre-calculation, simulation, testing and other methods. Preferably, the performance priority principle includes: selecting the precoding algorithm with the best performance according to the current channel state and the performance of various precoding algorithms under different channel states, and the performance of various precoding algorithms under different channel states can be Obtained through pre-calculation, simulation, testing, etc. By further selecting the best among the precoding algorithms supported by the receiver, it is beneficial to improve the network throughput and improve the communication quality of the system.

Please refer to FIG. 8 , which is a flow chart of the first embodiment of the terminal-side data communication method provided by the present invention. 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 a precoding algorithm according to the receiver precoding support capability information to precode the data to be sent.

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

In the data communication method provided by the embodiment of the present invention, by sending the receiver precoding support capability information to the network side device, the network side device selects a precoding algorithm to precode the data to be sent according to the receiver precoding support capability information, which can avoid the 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 the receiver precoding support capability information have been described in detail with reference to FIG. 1 , and will not be repeated here.

The method for the terminal to report the receiver precoding support capability information to the network side device can be either a terminal active reporting method or a network side device query method. When the network-side device query method is adopted, before step S800, it 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 may be a general query request for all receiver capabilities, or a specific query request for the receiver precoding capability. Preferably, the receiver capability query request may also include the capability of the network side device to support precoding.

Please refer to FIG. 9, which is a flow chart of the second embodiment of the terminal-side data communication method provided by the present invention. The method includes:

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

In step S901, query the precoding type supported by the receiver according to the receiver capability query request, and use the precoding type that matches the precoding type supported by the network side device among the precoding types supported by the receiver as The receiver precoding support capability information is sent to the network side device, so that the network side device selects a precoding algorithm according to the receiver precoding support capability information to precode data to be sent.

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

The precoding type information supported by the network side device and the receiver precoding support capability information have been described in detail with reference to FIG. 2 , and will not be repeated here.

Please refer to FIG. 10 , which is a flow chart of the third embodiment of the terminal-side data communication method provided by the present invention. The method includes:

In step S1000, a receiver capability query request sent by the network side device is received, and the receiver capability query request includes receiver type information matching the precoding type supported by the network side device.

In step S1001, query the receiver types included in the terminal according to the receiver capability query request, and use the receiver type that matches the receiver type required by the network side equipment among the receiver types included in the terminal as the receiver The precoding support capability information is sent to the network side device, so that the network side device selects a precoding algorithm according to the receiver precoding support capability information to precode the data to be sent.

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

The receiver type information and receiver precoding support capability information matching the precoding type supported by the network side equipment have been described in detail with reference to FIG. 3 , and will not be repeated here.

Please refer to Figure 11, which is a schematic structural diagram of the first embodiment of the terminal provided by the present invention, including:

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

The data receiving module 1120 is configured to receive the precoded 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 a precoding algorithm to precode the data to be sent according to the receiver precoding support capability information, which can avoid network-side The incorrect reception of user data caused by the mismatch between the implemented precoding algorithm and the capability of the terminal receiver improves 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 will not be repeated here.

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

Please refer to FIG. 12, which is a schematic structural diagram of the second embodiment of the terminal sending module provided by the present invention, including a query request receiving module 1210, a terminal capability sending module 1220, and a data receiving module 1230, wherein the terminal capability sending module 1220 includes a matching precoding type Sending module 1221.

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 information about precoding types 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 match 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 receiver precoding support capability information, so that the network side device selects a precoding algorithm according to the receiver precoding support capability information to precode data to be sent.

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

The precoding type information supported by the network side device and the receiver precoding support capability information have been described in detail with reference to FIG. 6 , and will not be repeated here.

Please refer to Figure 13, which is a schematic structural diagram of the third embodiment of the terminal provided by the present invention, including a query request receiving module 1310, a terminal capability sending module 1320, and a data receiving module 1330, wherein the terminal capability sending module 1320 includes a matching receiver type sending module 1321.

The query request receiving module 1310 is configured to receive a receiver capability query request sent by the network side device, where the receiver capability query request includes receiver type information matching the 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 equipment 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 according to the receiver precoding support capability information to precode data to be sent.

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

The 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 repeated here.

The present invention also provides a data communication system, including a terminal and the network-side device described in any of the above embodiments. 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 of the terminal precodes the support capability information, selects an appropriate precoding algorithm for it, and performs effective data transmission.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a computer-readable storage medium. During execution, it may include the processes of the embodiments of the above-mentioned methods. Wherein, the storage medium may be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM) or a random access memory (Random Access Memory, RAM), etc.

What is disclosed above is only a preferred embodiment of the present invention, and of course it cannot limit the scope of rights of the present invention. Those of ordinary skill in the art can understand all or part of the process for realizing the above embodiments, and according to the rights of the present invention The equivalent changes required still belong to the scope covered by the invention.

Claims (18)

1. a data communications method, is characterized in that, comprising:

Obtain the receiver precoding tenability information of terminal, described receiver precoding tenability information comprises the precoding type of the precoding type matching supported with network equipment in the precoding type that receiver supports;

According to described receiver precoding tenability Information Selection precoding algorithms;

According to described precoding algorithms, precoding is carried out to data to be sent, and the data after precoding are sent to terminal.

2. data communications method according to claim 1, is characterized in that, before the step of the receiver precoding tenability information of described acquisition terminal, described method also comprises:

To the request of terminal transmitter-receiver capability query, for the receiver precoding tenability information of terminal described in acquisition request.

3. data communications method according to claim 2, is characterized in that, the request of described receiver capability query comprises the precoding type information that the network equipment is supported.

4. data communications method according to claim 2, it is characterized in that, described receiver precoding tenability inquiry request comprises the receiver type information of the precoding type matching supported with network equipment, and described receiver precoding tenability information comprises the receiver type matched with the receiver type required for network equipment in the receiver type that terminal comprises.

5. the data communications method according to any one of claim 1-4, is characterized in that, the described step according to described receiver precoding tenability Information Selection precoding algorithms specifically comprises:

Precoding algorithms is selected according to described receiver precoding tenability information and default precoding optimum principle.

6. a data communications method, is characterized in that, comprising:

To network equipment transmitter-receiver precoding tenability information, described receiver precoding tenability information comprises the precoding type of the precoding type matching supported with network equipment in the precoding type that receiver supports; According to described receiver precoding tenability Information Selection precoding algorithms, precoding is carried out to data to be sent to make network equipment;

Receive the data after the precoding of described network equipment transmission, and according to described precoding algorithms to described decoding data.

7. data communications method according to claim 6, is characterized in that, before the described step to network equipment transmitter-receiver precoding tenability information, described method also comprises:

Receive the receiver capability query request from network equipment, described inquiry request is used for receiver precoding tenability information described in acquisition request.

8. data communications method as claimed in claim 7, it is characterized in that, the request of described receiver capability query comprises the precoding type information that network equipment is supported;

The described step to network equipment transmitter-receiver precoding tenability information is specially:

According to the precoding type that described receiver precoding tenability inquiry request inquire-receive machine is supported, and the precoding type of the precoding type matching supported with network equipment in the precoding type supported by receiver sends to network equipment as receiver precoding tenability information.

9. data communications method as claimed in claim 7, it is characterized in that, the request of described receiver capability query comprises the receiver type information of the precoding type matching supported with network equipment;

The described step to network equipment transmitter-receiver precoding tenability information is specially:

According to the receiver type that described receiver precoding tenability inquiry request inquiry terminal comprises, and the receiver type matched with the receiver type required for network equipment in receiver type terminal comprised sends to network equipment as receiver precoding tenability information.

10. a network equipment, is characterized in that, comprising:

Terminal capability acquisition module, for obtaining the receiver precoding tenability information of terminal, described receiver precoding tenability information comprises the precoding type of the precoding type matching supported with network equipment in the precoding type that receiver supports;

Algorithms selection module, for according to described receiver precoding tenability Information Selection precoding algorithms;

Data after precoding for carrying out precoding according to described precoding algorithms to data to be sent, and are sent to terminal by data transmission blocks.

11. network equipments according to claim 10, is characterized in that, described network equipment also comprises:

Inquiry request sending module, for the request of terminal transmitter-receiver capability query, for the receiver precoding tenability information of terminal described in acquisition request.

12. network equipments according to claim 11, it is characterized in that, described inquiry request sending module specifically comprises network equipment precoding type sending module, and described network equipment precoding type sending module is used for the precoding type supported to terminal transmission network equipment;

Described receiver precoding tenability information comprises the precoding type of the precoding type matching supported with network equipment in the precoding type that receiver supports.

13. network equipments according to claim 11, it is characterized in that, described inquiry request sending module specifically comprises network equipment receiver demand sending module, and described network equipment receiver demand sending module is used for the receiver type matched to the precoding algorithms that terminal sends and network equipment is supported;

Described receiver precoding tenability information comprises the receiver type matched with the receiver type required for network equipment in the receiver type that terminal comprises.

14. 1 kinds of terminals, is characterized in that, comprising:

Terminal capability sending module, for to network equipment transmitter-receiver precoding tenability information, described receiver precoding tenability information comprises the precoding type of the precoding type matching supported with network equipment in the precoding type that receiver supports;

According to described receiver precoding tenability Information Selection precoding algorithms, precoding is carried out to data to be sent to make network equipment;

Data reception module, for receiving the data after precoding that described network equipment sends, and according to described precoding algorithms to described decoding data.

15. terminals according to claim 14, is characterized in that, described terminal also comprises:

Inquiry request receiver module, for receiving the receiver capability query request from network equipment.

16. terminals as claimed in claim 15, it is characterized in that, the request of described receiver capability query comprises the precoding type information that network equipment is supported;

Described terminal capability sending module specifically comprises:

Coupling precoding type sending module, for the precoding type supported according to described receiver precoding tenability inquiry request inquire-receive machine, and the precoding type of the precoding type matching supported with network equipment in the precoding type supported by receiver sends to network equipment as receiver precoding tenability information.

17. terminals as claimed in claim 15, it is characterized in that, the request of described receiver capability query comprises the receiver type information of the precoding type matching supported with network equipment;

Described terminal capability sending module specifically comprises:

Coupling receiver type sending module, for the receiver type comprised according to described receiver precoding tenability inquiry request inquiry terminal, and the receiver type matched with the receiver type required for network equipment in receiver type terminal comprised sends to network equipment as receiver precoding tenability information.

18. 1 kinds of data communication systems, comprise network equipment and terminal, it is characterized in that, described network equipment comprises:

Terminal capability acquisition module, for obtaining the receiver precoding tenability information of terminal, described receiver precoding tenability information comprises the precoding type of the precoding type matching supported with network equipment in the precoding type that receiver supports;

Algorithms selection module, for according to described receiver precoding tenability Information Selection precoding algorithms;

Data after precoding for carrying out precoding according to described precoding algorithms to data to be sent, and are sent to terminal by data transmission blocks;

Described terminal comprises:

Terminal capability sending module, for to network equipment transmitter-receiver precoding tenability information, described receiver precoding tenability information comprises the precoding type of the precoding type matching supported with network equipment in the precoding type that receiver supports; According to described receiver precoding tenability Information Selection precoding algorithms, precoding is carried out to data to be sent to make network equipment;

Data reception module, for receiving the data after precoding that described network equipment sends, and according to described precoding algorithms to described decoding data.