WO2019157721A1

WO2019157721A1 - Method, device and system for configuring transmission parameters

Info

Publication number: WO2019157721A1
Application number: PCT/CN2018/076858
Authority: WO
Inventors: 唐海
Original assignee: Oppo广东移动通信有限公司
Priority date: 2018-02-14
Filing date: 2018-02-14
Publication date: 2019-08-22
Also published as: CN110710304A; CN110710304B

Abstract

Provided are a method and device for configuring transmission parameters, and a computer storage medium. The method comprises: configuring, for a target terminal, transmission parameters used during sidelink (SL) transmission; and sending the transmission parameters to the target terminal, wherein the transmission parameters are used for the target terminal to carry out SL transmission based on the configuration of the transmission parameters. Compared with a base station merely configuring, for a terminal, a time-frequency resource for data transmission in the current related V2X technology, by configuring transmission parameters used for a target terminal to carry out SL transmission, the failure in data transmission caused during transmission between incompatible terminals by means of an SL can be avoided.

Description

Method, device and system for configuring transmission parameters

Technical field

The embodiments of the present invention relate to the field of wireless communications technologies, and in particular, to a method, a device, and a computer storage medium for configuring transmission parameters.

Background technique

The vehicle networking system adopts a Long Term Evolution (LTE)-to-device (D2D, Device to Device) side-link (SL, Sidelink) transmission technology, and the communication data is received by the base station in a conventional LTE system or Different ways of sending, in the car networking system, the terminals communicate directly through the PC5 interface (the interface between the terminal and the terminal), that is, the side-link SL, which has higher spectral efficiency and lower transmission delay.

In the 3rd Generation Partnership Project (3GPP, the 3rd Generation Partnership Project) Rel-14, the vehicle networking technology (V2X, Vehicle-to-Everything) was standardized, and two transmission modes were defined: mode 3 and mode 4. In mode 3, the transmission resources of the terminal are allocated by the base station. In mode 4, the terminal determines the transmission resource by means of sensing + reservation.

As the 3GPP project continues to advance, the standard version of the 3GPP protocol has also evolved from Rel-14 to Rel-15, and new and non-backward compatible features are often introduced during the development of the standard version of the 3GPP protocol ( Feature), taking the standard version of Rel-15 of the 3GPP protocol as an example, introducing 64 Quadrature Amplitude Modulation (QAM), transmit diversity, and packet data convergence protocol (PDCP, Packet Data Convergence Protocol) Features that are not compatible with the Rel-14 version. Then, incompatible features may result in data not being transmitted normally when data is transmitted through the PC5 interface, that is, the side-link SL, between terminals that conform to different protocol versions.

Summary of the invention

Embodiments of the present invention are directed to a method, apparatus, and computer storage medium for configuring transmission parameters.

The technical solution of the embodiment of the present invention can be implemented as follows:

In a first aspect, an embodiment of the present invention provides a method for configuring a transmission parameter, where the method includes:

The transmission parameters used when configuring the side-link SL transmission for the target terminal;

Transmitting the transmission parameter to the target terminal; wherein the transmission parameter is used by the target terminal to perform SL transmission based on a configuration of the transmission parameter.

In a second aspect, an embodiment of the present invention provides a method for configuring a transmission parameter, where the method is applied to a terminal device, and the method includes:

The transmission parameters used when receiving the side-line SL transmission;

The SL transmission is performed based on the configuration of the transmission parameters.

In a third aspect, an embodiment of the present invention provides a network device, including a configuration part and a sending part, where

The configuration part is configured to configure, by the target terminal, a transmission parameter used when the side chain SL is transmitted;

The transmitting part is configured to send the transmission parameter to the target terminal; wherein the transmission parameter is used by the target terminal to perform SL transmission based on the configuration of the transmission parameter.

In a fourth aspect, an embodiment of the present invention provides a network device, including: a first network interface, a first memory, and a first processor;

The first network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements;

The first memory is configured to store a computer program capable of running on the first processor;

The first processor is configured to perform the steps of the method of the first aspect when the computer program is run.

In a fifth aspect, an embodiment of the present invention provides a terminal device, including: a receiving part and a transmitting part, where

The receiving part is configured to receive a transmission parameter used when the side-line SL is transmitted;

The transmitting portion is configured to perform SL transmission based on a configuration of the transmission parameter.

According to a sixth aspect, a terminal device provided by the embodiment of the present invention includes: a second network interface, a second memory, and a second processor;

The second network interface is configured to receive and send signals during the process of transmitting and receiving information with other external network elements;

The second memory is configured to store a computer program capable of running on the second processor;

The second processor is configured to perform the steps of the method of the second aspect when the computer program is run.

According to a seventh aspect, an embodiment of the present invention provides a computer storage medium storing a program for configuring a transmission parameter, where the program for configuring a transmission parameter is implemented by at least one first processor to implement the first aspect or The steps of the method of the second aspect.

The embodiment of the invention provides a method, a device and a computer storage medium for configuring transmission parameters; the network side configures the SL transmission parameters to the terminal, thereby avoiding data caused by incompatible characteristics between terminals conforming to different protocol versions. Unable to transfer properly.

DRAWINGS

1 is a schematic diagram of a scenario of mode 3 in a car network;

2 is a schematic diagram of a scenario of mode 4 in a car network;

FIG. 3 is a schematic flowchart of a method for configuring transmission parameters according to an embodiment of the present disclosure;

FIG. 4 is a schematic flowchart of a method for configuring transmission parameters according to an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present disclosure;

FIG. 6 is a schematic structural diagram of a specific hardware of a network device according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure;

FIG. 8 is a schematic structural diagram of a specific hardware of a terminal device according to an embodiment of the present disclosure.

Detailed ways

The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

To facilitate understanding of the technical solutions of the embodiments of the present invention, modes 3 and 4 in the Internet of Vehicles are separately explained below.

Mode 3: As shown in FIG. 1 , the transmission resource of the in-vehicle terminal is allocated by a base station (such as an evolved NodeB in LTE or a 5G base station gNB in a new radio (NR, New Radio) system, specifically The base station sends a control message for indicating the Grant resource to the in-vehicle terminal through the downlink (DL, Down Link). Then, the in-vehicle terminal transmits the data on the SL according to the resource allocated by the base station. In mode 3, the base station may allocate a single transmission resource for the vehicle terminal, or may allocate a semi-static transmission resource for the terminal.

Mode 4: As shown in Figure 2, the vehicle terminal uses the method of listening + reservation to select resources and data transmission. The vehicle terminal acquires an available transmission resource set by means of interception in the resource pool, and the vehicle terminal randomly selects one resource from the transmission resource set for data transmission. Since the service in the car network system has periodic characteristics, the vehicle terminal usually adopts a semi-static transmission mode, that is, after the vehicle terminal selects one transmission resource, the resource is continuously used in multiple transmission cycles, thereby reducing the resource weight. The probability of selection and resource conflicts. The vehicle terminal carries information for reserving the next transmission resource in the control information of the current transmission, so that other terminals can determine whether the resource is reserved and used by the vehicle terminal by detecting the control information of the vehicle terminal. The purpose of resource conflicts.

It should be noted that, in LTE-V2X, mode 3 is used to indicate that the transmission resource of the in-vehicle terminal is allocated by the base station, and mode 4 is used to indicate that the transmission resource of the in-vehicle terminal is selected by the terminal autonomously, in the new wireless-vehicle networking technology (NR). In the case of -V2X, New Radio-Vehicle-to-Everything, a new transmission mode can be defined, which is not limited by the present invention.

Taking the mode 3 in the above-mentioned mode structure of the Internet of Vehicles as an example, the time-frequency resources used by the terminals for data transmission through the side-link SL, that is, the PC5 interface are allocated by the base station, and the 3GPP protocol version is used. With continuous development, there is a case where the transmission data is incompatible between terminals supporting different versions of the communication protocol. For example, the terminal 1 supports the 3GPP protocol version Rel-14, and the terminal 2 supports the 3GPP protocol version Rel-15. It can be seen that the terminal 2 can support features such as 64QAM, transmit diversity, PDCP duplication, etc., but the terminal 1 does not. Supporting, therefore, when the terminal 2 performs data transmission with the terminal 1 by using the above-mentioned feature that cannot be backward compatible, the data transmission fails due to the unsupported terminal 1. Therefore, the network side needs to perform the SL transmission process on the terminal 2. The transmission parameters are configured to avoid normal data transmission between the terminal 1 and the terminal 2.

Based on this, the following embodiments of the present application are proposed. It can be understood that all the technical solutions of the embodiments of the present invention are applicable not only to the vehicle networking system, but also to other end-to-end communication systems. The terminal in the embodiment of the present invention may be an in-vehicle terminal or a handheld terminal. The PDA (Personal Digital Assistant), the wearable terminal, and the like, the network in the embodiment of the present invention may be an NR network, an LTE network, or the like.

Embodiment 1

Referring to FIG. 3, a method for configuring a transmission parameter according to an embodiment of the present invention is shown. The method may be applied to a network device in the device to the device D2D, and may even be applied to a network device in the V2X technology. In the illustrated base station, the method includes:

S301: Configure a transmission parameter used when the side chain SL transmission is configured for the target terminal.

S302: Send the transmission parameter to the target terminal, where the transmission parameter is used by the target terminal to perform SL transmission based on a configuration of the transmission parameter.

In the method for configuring a transmission parameter provided by the embodiment, the network device configures a transmission parameter used for the downlink transmission of the target terminal, and sends the transmission parameter to the target terminal by using the configuration information. Compared with the current time-frequency resource in which the base station configures data transmission only for the terminal in the related V2X technology, the transmission parameters used for the SL transmission of the target terminal are configured, so as to avoid the transmission of the incompatible terminals through the SL. The data transfer failed.

For the technical solution shown in FIG. 3, in a possible implementation, the transmission parameter may include: a modulation and coding scheme (MCS) used by the target terminal to transmit through the SL, and / or indication information of the transmission mode used when the target terminal transmits through the SL. It should be noted that the foregoing transmission parameters are typical transmission parameters related to the 3GPP protocol version or service type. It can be understood that with the continuous development of the 3GPP protocol, subsequent transmission parameters related to the protocol version or service type still appear. The technical solutions of the embodiments of the present invention are applicable, and details are not described herein again.

Specifically, the indication information of the transmission mode used by the target terminal when transmitting by using the SL includes:

The indication information used to indicate that the target terminal transmits by using a single antenna port when transmitting by using the SL, or the indication information used to indicate that the target terminal transmits by using the transmission diversity when transmitting by using the SL.

For this embodiment, the transmission parameters are used by the terminal to implement SL data transmission. It should be noted that the 3GPP protocol versions supported by the terminal are different, and when the terminal performs SL data transmission, the 3GPP protocol versions supported by the service type of the transmission data are different. Between different versions of the protocol, a feature feature that cannot be backward compatible is introduced in the new version. That is to say, when the terminal supporting the new protocol version is in the SL transmission, the above-mentioned features that cannot be backward compatible may result in failure to The terminal supporting the old protocol version performs data transmission. For example, in the evolved V2X (eV2X, evolved V2X) content of the 3GPP Rel-15 protocol, 64QAM and transmit diversity are introduced. Then, the terminal supporting the Rel-15 protocol version is modulated by 64QAM and then transmitted by diversity. The data to be transmitted is sent on the SL. The features of the Rel-15 protocol and the transmit diversity are not backward compatible. Therefore, the terminal supporting the Rel-14 protocol cannot receive the data to be transmitted, which causes the transmission between the terminals to fail. . Based on this, in the specific configuration process, the transmission parameters need to be determined in combination with the 3GPP protocol version supported by the target terminal and the data service type for performing SL transmission. The version of the 3GPP protocol supported by the terminal may be the Rel-14 or the Rel-15. It is to be understood that the version of the 3GPP protocol that can be supported by the terminal can be applied to the technical solution of the embodiment of the present invention, and details are not described herein.

Based on the above description, the transmission parameters used when configuring the downlink transmission for the target terminal in the embodiment include:

Transmitting a transmission parameter corresponding to the data category for the target terminal based on protocol version information supported by the target terminal and/or a data category of the target terminal potentially utilizing the SL transmission.

Specifically, the minimum protocol version that can be supported for the data category is the same as or different from the protocol version supported by the target terminal, and the protocol version information supported by the target terminal and/or the target terminal may be utilized. The data type that is transmitted by the SL, and the transmission parameter corresponding to the data category is configured for the target terminal. In a specific implementation process, the following two situations may be included:

Situation one

Corresponding to the protocol version supported by the target terminal being lower than the protocol version supported by the target terminal, the transmission parameter corresponding to the lowest protocol version is configured for the target terminal.

For example, when the target terminal can support the Rel-15 version, the basic security can be supported by the Rel-14 protocol version such as Cooperative Awareness Message (CAM) or Decentralized Environmental Notification Message (DENM). For the type message, the network device can configure the transmission parameters corresponding to the Rel-14 version for the target terminal, such as the indication information sent by the single antenna port, or the quadrature phase shift keying (QPSK, Quadrture). Phase Shift Keying), or the indication information of the MCS corresponding to 16QAM.

Situation two

Corresponding to the protocol version supported by the target terminal, the minimum protocol version capable of supporting the data category is the same as the protocol version supported by the target terminal, and the transmission parameter corresponding to the protocol version supported by the target terminal is configured for the target terminal.

For example, when the target terminal can support the Rel-15 version, the network device can target the non-secure type of entertainment message that the Rel-15 protocol version such as entertainment information can support and the Rel-14 version cannot support. The service message is configured to configure the transmission parameter corresponding to the Rel-15 version of the target terminal, for example, the indication information that is sent in the manner of sending the diversity, or the indication information that is encoded by the MCS corresponding to the 64QAM.

After the configuration of the transmission parameters and the specific content are described, the transmission parameters are sent to the target terminal. Based on this, in the technical solution shown in FIG. 3, the following three exemplary manners can be used for sending. .

Example one

In this example, the sending the transmission parameter to the target terminal includes:

The transmission parameter is carried in the downlink control information DCI, and is sent to the target terminal through the physical downlink control channel PDCCH.

Specifically, the transmission parameter is carried in the downlink control information DCI, and includes:

The transmission parameter is indicated by an information bit in the DCI; or

Carrying the transmission parameter by a scrambling code sequence that performs a scrambling code operation on the DCI; or

The transmission parameter is carried by a mask sequence that masks the DCI.

It can be understood that the network device can additionally explicitly set an information bit field in the DCI to directly indicate the transmission parameter. In addition, in order to avoid the change of the DCI field structure, the transmission parameter may be implicitly indicated based on the related operation of the DCI. It should be noted that, usually, the network device performs the scrambling code, mask, and the like on the DCI before performing the channel. Encoding, and finally transmitted through the PDCCH. Based on the above description, the transmission parameter information can be implicitly indicated by different masks and scrambling code sequences. For example, the network device may define a first correspondence, where the first correspondence indicates a correspondence between a scrambling code sequence for performing a scrambling code operation on the DCI and a transmission parameter; or the network device also defines a second correspondence, The second correspondence relationship indicates a correspondence between a mask sequence and a transmission parameter of the masking operation on the DCI, so that the DCI can be scrambled based on any one of the two correspondences. The scrambling sequence, or the transmission parameter is carried by a mask sequence that masks the DCI.

Example two

The transmission parameter is carried in a Demodulation Reference Signal (DMRS) of the downlink control channel PDCCH, and is sent to the target terminal through the PDCCH.

Specifically, the transmission parameter is carried in the demodulation reference signal DMRS of the downlink control channel PDCCH, and includes:

The transmission parameters are carried in a root sequence of the demodulation reference signal DMRS of the PDCCH, and/or cyclically shifted, and/or in an Orthogonal Cover Code (OCC).

For the first example, the DCI transmitted by the PDCCH is used to carry the transmission parameters, and in this example, the DMRS of the PDCCH may be used to transmit the transmission parameters. Specifically, the transmission parameter may be carried in a root sequence of the demodulation reference signal DMRS of the PDCCH, and/or cyclically shifted, and/or in an orthogonal cover code OCC. For example, the network device may define a third correspondence, where the third correspondence indicates a correspondence between a root sequence of the DMRS of the PDCCH and a transmission parameter; or the network device also defines a fourth correspondence, where the fourth correspondence The relationship indicates a correspondence between a cyclic shift of the DMRS of the PDCCH and a transmission parameter; or the network device may further define a fifth correspondence, where the fifth correspondence indicates an orthogonal cover code OCC between the DMRS of the PDCCH and the transmission parameter Correspondence.

Therefore, based on any one or more of the foregoing three correspondences, the network device can carry the transmission parameter by using at least one of a root sequence, a cyclic shift, and an orthogonal cover code OCC of the PDCCH of the PDCCH.

Example three

And transmitting the transmission parameter to the target terminal in the radio resource control RRC signaling.

Specifically, the MCS and/or the transmission mode in the transmission parameter may be bound to the service type of the data. Therefore, the radio resource control RRC signaling further carries the data category corresponding to the transmission parameter. For example, the network configures transmission parameters to the terminal through RRC signaling, and the transmission parameters are bound to the type of the service or the ID of the service.

Embodiment 2

Based on the same inventive concept of the foregoing embodiment, referring to FIG. 4, a method for configuring a transmission parameter according to an embodiment of the present invention is provided. The method is applied to a terminal device, and the method includes:

S401: Receive transmission parameters used when the side-line SL is transmitted;

S402: Perform SL transmission based on the configuration of the transmission parameter.

For the technical solution shown in FIG. 4, in a possible implementation manner, the transmission parameters include a modulation and coding strategy MCS used when transmitting through the SL, and/or a transmission mode used when transmitting through the SL. Instructions.

It should be noted that the foregoing transmission parameters are typical transmission parameters related to the 3GPP protocol version or service type. It can be understood that with the continuous development of the 3GPP protocol, subsequent transmission parameters related to the protocol version or service type still appear. The technical solutions of the embodiments of the present invention are applicable, and details are not described herein again.

Specifically, the indication information of the transmission mode used when transmitting by using the SL includes:

It is used to indicate indication information for transmitting by using a single antenna port when transmitting by SL, or indication information for transmitting by means of transmission diversity when transmitting by SL.

The transmission parameters are transmitted in three exemplary manners, which are described in the first embodiment. Correspondingly, in this embodiment, the transmission parameters used in the transmission of the receiving side downlink SL may also correspond to three exemplary The way to receive.

Example one

In this example, the transmission parameters used when the receiving side downlink SL is transmitted include:

Receiving downlink control information DCI carrying the transmission parameter by using a physical downlink control channel PDCCH;

The transmission parameters carried by the DCI are obtained by parsing the DCI.

Specifically, the transmission parameters carried by the DCI are obtained by parsing the DCI, including:

Parsing the information bits in the DCI to obtain the transmission parameters;

Or parsing a scrambling code sequence that performs a scrambling code operation on the DCI to obtain the transmission parameter;

Alternatively, a mask sequence for performing a masking operation on the DCI is parsed to obtain the transmission parameter.

It can be understood that, according to the corresponding example 1 in the first embodiment, for example, the network device can additionally explicitly set an information bit field in the DCI to directly indicate the transmission parameter; therefore, the terminal device can analyze the information. Bit to get the transmission parameters.

In addition, the network device may also implicitly indicate the transmission parameter. For example, the network device may define a first correspondence, where the first correspondence indicates a correspondence between the scrambling code sequence and the transmission parameter of the scrambling code operation on the DCI. Alternatively, the network device also defines a second correspondence, where the second correspondence indicates a correspondence between a mask sequence and a transmission parameter of the masking operation on the DCI, and therefore, when the terminal learns the two correspondences Either way, the scrambling code sequence for scrambling the DCI can be parsed, or the mask sequence for masking the DCI can be parsed to obtain the transmission parameter.

Example two

And transmitting the transmission parameter to a demodulation reference signal DMRS of the downlink control channel PDCCH, and transmitting the PDCCH to the target terminal by using a PDCCH.

Receiving, by using a physical downlink control channel PDCCH, a demodulation reference signal DMRS carrying the transmission parameter;

Obtaining transmission parameters carried by the DMRS by parsing the DMRS.

Specifically, the obtaining, by parsing the DMRS, the transmission parameters carried by the DMRS, includes:

The transmission parameters are obtained by parsing a root sequence of the DMRS of the DMRS, and/or a cyclic shift, and/or an orthogonal cover code OCC.

It can be understood that the network device can use the DMRS of the PDCCH to transmit the transmission parameter, in addition to the DCI sent by the PDCCH. For example, the network device can define a third correspondence, where the third correspondence indicates the PDCCH. Corresponding relationship between the root sequence of the DMRS and the transmission parameter; or the network device also defines a fourth correspondence, where the fourth correspondence indicates a correspondence between a cyclic shift of the DMRS of the PDCCH and a transmission parameter; or, the network The device may further define a fifth correspondence, where the fifth correspondence indicates a correspondence between the orthogonal cover code OCC of the DMRS of the PDCCH and the transmission parameter. After the terminal learns any one or more of the foregoing three correspondences, the terminal can obtain the transmission by parsing at least one of a root sequence, a cyclic shift, and an orthogonal cover code OCC of the DMRS of the PDCCH. parameter.

Example three

Receiving radio resource control RRC signaling carrying the transmission parameter;

Obtaining, by parsing the RRC signaling, a transmission parameter carried by the RRC signaling.

Embodiment 3

Based on the same inventive concept of the foregoing embodiment, referring to FIG. 5, a network device 50 according to an embodiment of the present invention is provided, including a configuration part 501 and a sending part 502.

The configuration part 501 is configured to configure, by the target terminal, a transmission parameter used when the side chain SL is transmitted;

The sending part 502 is configured to send the transmission parameter to the target terminal; wherein the transmission parameter is used by the target terminal to perform SL transmission based on the configuration of the transmission parameter.

In the above solution, the transmission parameter includes a modulation and coding policy MCS used when the target terminal transmits through the SL, and/or indication information of a transmission mode used when the target terminal transmits through the SL.

In the above solution, the indication information of the transmission mode used by the target terminal to transmit through the SL includes:

In the foregoing solution, the sending part 502 is configured to carry the transmission parameter in the downlink control information DCI, and send the PDCCH to the target terminal through the physical downlink control channel.

In the above solution, the sending part 502 is configured to:

The transmission parameter is indicated by an information bit in the DCI; or

The transmission parameter is carried by a mask sequence that masks the DCI.

In the above solution, the sending part 502 is configured to:

In the above solution, the sending part 502 is configured to: carry the transmission parameter on a root sequence of the demodulation reference signal DMRS of the PDCCH, and/or cyclic shift, and/or orthogonal cover code OCC. .

In the above solution, the sending part 502 is configured to:

In the above solution, the radio resource control RRC signaling further carries a data category corresponding to the transmission parameter.

In the above solution, the configuration part 501 is configured to:

Corresponding to the protocol version supported by the target terminal is the same as the protocol version supported by the target terminal, and the transmission parameter corresponding to the protocol version supported by the target terminal is configured for the target terminal.

It can be understood that the network device 50 in this embodiment may be a network device that is applied to the device to the device D2D, and may even be applied to the network device in the V2X technology, and may specifically be the base station in the foregoing description. Moreover, in this embodiment, the "part" may be a partial circuit, a partial processor, a partial program or software, etc., of course, may be a unit, a module, or a non-modular.

In addition, each component in this embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software function module.

The integrated unit may be stored in a computer readable storage medium if it is implemented in the form of a software function module and is not sold or used as a stand-alone product. Based on such understanding, the technical solution of the embodiment is essentially Said that the part contributing to the prior art or all or part of the technical solution can be embodied in the form of a software product stored in a storage medium, comprising a plurality of instructions for making a computer device (may It is a personal computer, a server, or a network device, etc. or a processor that performs all or part of the steps of the method described in this embodiment. The foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes.

Therefore, the embodiment provides a computer storage medium storing a program for configuring a transmission parameter, and the program for configuring the transmission parameter is implemented by at least one processor to implement the steps of the method described in the first embodiment. .

Based on the foregoing network device 50 and a computer storage medium, referring to FIG. 6, a network device 50 according to an embodiment of the present invention includes: a first network interface 601, a first memory 602, and a first processor 603; The components are coupled together by a bus system 604. It will be appreciated that bus system 604 is used to implement connection communication between these components. The bus system 604 includes a power bus, a control bus, and a status signal bus in addition to the data bus. However, for clarity of description, various buses are labeled as bus system 604 in FIG. among them,

The first network interface 601 is configured to receive and send signals during the process of transmitting and receiving information with other external network elements.

a first memory 602, configured to store a computer program capable of running on the first processor 603;

The first processor 603 is configured to: when the computer program is executed, perform:

It is to be understood that the first memory 602 in the embodiments of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (PROM), an erasable programmable read only memory (Erasable PROM, EPROM), or an electric Erase programmable read only memory (EEPROM) or flash memory. The volatile memory can be a Random Access Memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM). SDRAM), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM), Enhanced Synchronous Dynamic Random Access Memory (ESDRAM), Synchronous Connection Dynamic Random Access Memory (SDRAM) And direct memory bus random access memory (DRRAM). The first memory 602 of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

The first processor 603 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the foregoing method may be completed by an integrated logic circuit of hardware in the first processor 603 or an instruction in a form of software. The first processor 603 may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), or a field programmable gate array (FPGA). Or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps, and logical block diagrams disclosed in the embodiments of the present invention may be implemented or carried out. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like. The steps of the method disclosed in the embodiments of the present invention may be directly implemented by the hardware decoding processor, or may be performed by a combination of hardware and software modules in the decoding processor. The software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like. The storage medium is located in the first memory 602, and the first processor 603 reads the information in the first memory 602, and completes the steps of the foregoing method in combination with the hardware thereof.

It will be appreciated that the embodiments described herein can be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit can be implemented in one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processing (DSP), Digital Signal Processing Equipment (DSP Device, DSPD), programmable Programmable Logic Device (PLD), Field-Programmable Gate Array (FPGA), general purpose processor, controller, microcontroller, microprocessor, other for performing the functions described herein In an electronic unit or a combination thereof.

For a software implementation, the techniques described herein can be implemented by modules (eg, procedures, functions, and so on) that perform the functions described herein. The software code can be stored in memory and executed by the processor. The memory can be implemented in the processor or external to the processor.

Specifically, when the first processor 603 in the network device 60 is configured to run the computer program, the method steps described in the foregoing Embodiment 1 are performed, and details are not described herein.

Embodiment 4

Based on the same inventive concept of the foregoing embodiment, referring to FIG. 7, a composition of a terminal device 70 according to an embodiment of the present invention is shown, including: a receiving portion 701 and a transmitting portion 702, wherein the receiving portion 701 is configured. The transmission parameters used to receive the side-line SL transmission;

The transmitting portion 702 is configured to perform SL transmission based on the configuration of the transmission parameters.

In the above solution, the transmission parameters include a modulation and coding strategy MCS used when transmitting through the SL, and/or indication information of a transmission mode used when transmitting through the SL.

In the foregoing solution, the indication information of the transmission mode used when transmitting by using the SL includes:

In the above solution, the receiving part 701 is configured to:

The transmission parameters carried by the DCI are obtained by parsing the DCI.

In the above solution, the receiving part 701 is configured to:

Parsing the information bits in the DCI to obtain the transmission parameters;

In the above solution, the receiving part 701 is configured to:

Obtaining transmission parameters carried by the DMRS by parsing the DMRS.

In the above solution, the receiving part 701 is configured to:

It can be understood that the terminal device 70 involved in this embodiment is a terminal device in a D2D network architecture, and may even be a terminal device in a V2X network architecture.

In addition, the embodiment provides a computer storage medium storing a program for configuring a transmission parameter, and the program for configuring the transmission parameter is implemented by at least one processor to implement the steps of the method in the second embodiment. . For a detailed description of the computer storage medium, refer to the description in the foregoing third embodiment, and details are not described herein again.

Based on the foregoing terminal device 70 and the computer storage medium, referring to FIG. 8 , a specific hardware component of the terminal device 80 according to the embodiment of the present invention includes: a second network interface 801, a second memory 802, and a second process. 803; the various components are coupled together by a bus system 804. As can be appreciated, bus system 804 is used to implement connection communication between these components. Bus system 804 includes, in addition to the data bus, a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are labeled as bus system 804 in FIG. among them,

The second network interface 801 is configured to receive and send signals during the process of transmitting and receiving information with other external network elements.

a second memory 802, configured to store a computer program capable of running on the second processor 803;

The second processor 803 is configured to: when the computer program is executed, perform:

The transmission parameters used when receiving the side-line SL transmission;

It is to be understood that the components in the specific hardware structure of the terminal device 70 in this embodiment are similar to the corresponding components in the foregoing technical solutions, and are not described herein.

Specifically, the second processor 803 in the terminal device 70 is further configured to perform the steps of the method in the foregoing Embodiment 2 when the computer program is executed, and details are not described herein.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Industrial applicability

In the embodiment of the present invention, the network device configures a transmission parameter used in the downlink transmission for the target terminal, and sends the transmission parameter to the target terminal through the configuration information. Compared with the current time-frequency resource in which the base station configures data transmission only for the terminal in the related V2X technology, the transmission parameters used for the SL transmission of the target terminal are configured, so as to avoid the transmission of the incompatible terminals through the SL. The data transfer failed.

Claims

A method for configuring a transmission parameter, the method being applied to a network device, the method comprising:

The transmission parameters used when configuring the side-link SL transmission for the target terminal;

Transmitting the transmission parameter to the target terminal; wherein the transmission parameter is used by the target terminal to perform SL transmission based on a configuration of the transmission parameter.
The method according to claim 1, wherein said transmission parameter comprises a modulation and coding strategy MCS used when said target terminal transmits through SL, and/or a transmission mode used when said target terminal transmits through SL Instructions.
The method according to claim 2, wherein the indication information of the transmission mode used by the target terminal when transmitting through the SL comprises:

The indication information used to indicate that the target terminal transmits by using a single antenna port when transmitting by using the SL, or the indication information used to indicate that the target terminal transmits by using the transmission diversity when transmitting by using the SL.
The method according to any one of claims 1 to 3, wherein the transmitting the transmission parameter to the target terminal comprises:

The transmission parameter is carried in the downlink control information DCI, and is sent to the target terminal through the physical downlink control channel PDCCH.
The method according to claim 4, wherein the transmitting the parameter to the downlink control information DCI comprises:

The transmission parameter is indicated by an information bit in the DCI; or

Carrying the transmission parameter by a scrambling code sequence that performs a scrambling code operation on the DCI; or

The transmission parameter is carried by a mask sequence that masks the DCI.
The method according to any one of claims 1 to 3, wherein the transmitting the transmission parameter to the target terminal comprises:

And transmitting the transmission parameter to a demodulation reference signal DMRS of the downlink control channel PDCCH, and transmitting the PDCCH to the target terminal by using a PDCCH.
The method according to claim 6, wherein the transmission parameter is carried in a demodulation reference signal DMRS of a downlink control channel PDCCH, including:

The transmission parameters are carried in a root sequence of the demodulation reference signal DMRS of the PDCCH, and/or cyclically shifted, and/or in an orthogonal cover code OCC.
The method according to any one of claims 1 to 3, wherein the transmitting the transmission parameter to the target terminal comprises:

And transmitting the transmission parameter to the target terminal in the radio resource control RRC signaling.
The method according to claim 8, wherein the radio resource control RRC signaling further carries a data category corresponding to the transmission parameter.
The method according to any one of claims 1 to 9, wherein the transmission parameters used when configuring the target terminal for side-link transmission include:

Transmitting a transmission parameter corresponding to the data category for the target terminal based on protocol version information supported by the target terminal and/or a data category of the target terminal potentially utilizing the SL transmission.
The method according to claim 10, wherein said configuring said data for said target terminal based on protocol version information supported by said target terminal and/or a data category of said target terminal potentially utilizing SL transmission The transmission parameters corresponding to the category, including:

Corresponding to the protocol version supported by the target terminal, the minimum protocol version capable of supporting the data category is lower than the protocol version supported by the target terminal, and the transmission parameter corresponding to the lowest protocol version is configured for the target terminal.
The method according to claim 10, wherein said configuring said data for said target terminal based on protocol version information supported by said target terminal and/or a data category of said target terminal potentially utilizing SL transmission The transmission parameters corresponding to the category, including:

Corresponding to the protocol version supported by the target terminal, the minimum protocol version capable of supporting the data category is the same as the protocol version supported by the target terminal, and the transmission parameter corresponding to the protocol version supported by the target terminal is configured for the target terminal.
A method for configuring a transmission parameter, the method being applied to a terminal device, the method comprising:

The transmission parameters used when receiving the side-line SL transmission;

The SL transmission is performed based on the configuration of the transmission parameters.
The method according to claim 13, wherein said transmission parameters include a modulation and coding strategy MCS used when transmitting through the SL, and/or indication information of a transmission mode used when transmitting through the SL.
The method according to claim 14, wherein the indication information of the transmission mode used when transmitting by the SL comprises:

It is used to indicate indication information for transmitting by using a single antenna port when transmitting by SL, or indication information for transmitting by means of transmission diversity when transmitting by SL.
The method according to any one of claims 13 to 15, wherein the transmission parameters used when the receiving side downlink SL is transmitted include:

Receiving downlink control information DCI carrying the transmission parameter by using a physical downlink control channel PDCCH;

The transmission parameters carried by the DCI are obtained by parsing the DCI.
The method according to claim 16, wherein the transmission parameters carried by the DCI are obtained by parsing the DCI, including:

Parsing the information bits in the DCI to obtain the transmission parameters;

Or parsing a scrambling code sequence that performs a scrambling code operation on the DCI to obtain the transmission parameter;

Alternatively, a mask sequence for performing a masking operation on the DCI is parsed to obtain the transmission parameter.
The method according to any one of claims 13 to 15, wherein the transmission parameters used when the receiving side downlink SL is transmitted include:

And transmitting the transmission parameter to a demodulation reference signal DMRS of the downlink control channel PDCCH, and transmitting the PDCCH to the target terminal by using a PDCCH.

Receiving, by using a physical downlink control channel PDCCH, a demodulation reference signal DMRS carrying the transmission parameter;

Obtaining transmission parameters carried by the DMRS by parsing the DMRS.
The method according to claim 18, wherein the obtaining the transmission parameters carried by the DMRS by parsing the DMRS comprises:

The transmission parameters are obtained by parsing a root sequence of the DMRS of the DMRS, and/or a cyclic shift, and/or an orthogonal cover code OCC.
The method according to any one of claims 13 to 15, wherein the transmission parameters used when the receiving side downlink SL is transmitted include:

Receiving radio resource control RRC signaling carrying the transmission parameter;

Obtaining, by parsing the RRC signaling, a transmission parameter carried by the RRC signaling.
The method according to claim 20, wherein the radio resource control RRC signaling further carries a data category corresponding to the transmission parameter.
A network device includes a configuration part and a sending part; wherein

The configuration part is configured to configure, by the target terminal, a transmission parameter used when the side chain SL is transmitted;

The transmitting part is configured to send the transmission parameter to the target terminal; wherein the transmission parameter is used by the target terminal to perform SL transmission based on the configuration of the transmission parameter.
The network device according to claim 22, wherein said transmission parameter includes a modulation and coding policy MCS used when said target terminal transmits through SL, and/or a transmission used when said target terminal transmits through SL Directional information.
The network device according to claim 23, wherein the indication information of the transmission mode used by the target terminal when transmitting by using the SL comprises:

The indication information used to indicate that the target terminal transmits by using a single antenna port when transmitting by using the SL, or the indication information used to indicate that the target terminal transmits by using the transmission diversity when transmitting by using the SL.
The network device according to any one of claims 22 to 24, wherein the transmitting part is configured to carry the transmission parameter in downlink control information DCI, and send the signal to the target terminal through a physical downlink control channel PDCCH.
The network device according to claim 25, wherein the transmitting portion is configured to:

The transmission parameter is indicated by an information bit in the DCI; or

Carrying the transmission parameter by a scrambling code sequence that performs a scrambling code operation on the DCI; or

The transmission parameter is carried by a mask sequence that masks the DCI.
The network device according to any one of claims 22 to 24, wherein the transmitting part is configured to: carry the transmission parameter in a demodulation reference signal DMRS of a downlink control channel PDCCH, and send the PDCCH to the Target terminal.
The network device according to claim 27, wherein the transmitting part is configured to: carry the transmission parameter on a root sequence of a demodulation reference signal DMRS of the PDCCH, and/or cyclically shift, and/or Orthogonal cover code in OCC.
The network device according to any one of claims 22 to 24, wherein the transmitting part is configured to: send the transmission parameter to the radio resource control RRC signaling and send the signal to the target terminal.
The network device according to claim 29, wherein the radio resource control RRC signaling further carries a data category corresponding to the transmission parameter.
The network device according to any one of claims 22 to 30, wherein the configuration part is configured to: based on protocol version information supported by the target terminal and/or potential target of the target terminal to be transmitted by using the SL a data category, configured to configure, for the target terminal, a transmission parameter corresponding to the data category.
The network device according to claim 31, wherein the configuration portion is configured to configure the target terminal corresponding to a protocol version supported by the target terminal corresponding to a minimum protocol version capable of supporting the data category The transmission parameter corresponding to the lowest protocol version.
The network device according to claim 31, wherein the configuration portion is configured to:

Corresponding to the protocol version supported by the target terminal, the minimum protocol version capable of supporting the data category is the same as the protocol version supported by the target terminal, and the transmission parameter corresponding to the protocol version supported by the target terminal is configured for the target terminal.
A terminal device includes: a receiving part and a transmitting part, wherein

The receiving part is configured to receive a transmission parameter used when the side-line SL is transmitted;

The transmitting portion is configured to perform SL transmission based on a configuration of the transmission parameter.
The terminal device according to claim 34, wherein said transmission parameter includes a modulation and coding policy MCS used when transmitting through the SL, and/or indication information of a transmission mode used when transmitting through the SL.
The method according to claim 35, wherein the indication information of the transmission mode used when transmitting by the SL comprises:

It is used to indicate indication information for transmitting by using a single antenna port when transmitting by SL, or indication information for transmitting by means of transmission diversity when transmitting by SL.
The terminal device according to any one of claims 34 to 36, wherein the receiving portion is configured to:

Receiving downlink control information DCI carrying the transmission parameter by using a physical downlink control channel PDCCH;

The transmission parameters carried by the DCI are obtained by parsing the DCI.
The terminal device according to claim 37, wherein the receiving portion is configured to:

Parsing the information bits in the DCI to obtain the transmission parameters;

Or parsing a scrambling code sequence that performs a scrambling code operation on the DCI to obtain the transmission parameter;

Alternatively, a mask sequence for performing a masking operation on the DCI is parsed to obtain the transmission parameter.
The terminal device according to any one of claims 34 to 36, wherein the receiving portion is configured to:

And transmitting the transmission parameter to a demodulation reference signal DMRS of the downlink control channel PDCCH, and transmitting the PDCCH to the target terminal by using a PDCCH.

Receiving, by using a physical downlink control channel PDCCH, a demodulation reference signal DMRS carrying the transmission parameter;

Obtaining transmission parameters carried by the DMRS by parsing the DMRS.
The terminal device according to claim 39, wherein the receiving portion is configured to: parse a root sequence of the DMRS of the DMRS, and/or a cyclic shift, and/or an orthogonal cover code OCC to obtain the transmission parameter.
The terminal device according to any one of claims 34 to 36, wherein the receiving part is configured to: receive radio resource control RRC signaling carrying the transmission parameter; and obtain the Transmission parameters carried by RRC signaling.
The terminal device according to claim 41, wherein the radio resource control RRC signaling further carries a data category corresponding to the transmission parameter.
A network device, comprising: a first network interface, a first memory and a first processor; wherein the first network interface is configured to receive and transmit signals during transmission and reception of information with other external network elements send;

The first memory is configured to store a computer program capable of running on the first processor;

The first processor is configured to perform the steps of the method of any one of claims 1 to 12 when the computer program is run.
A terminal device includes: a second network interface, a second memory, and a second processor; wherein the second network interface is configured to receive and transmit signals during transmission and reception of information with other external network elements send;

The second memory is configured to store a computer program capable of running on the second processor;

The second processor is configured to perform the steps of the method of any one of claims 13 to 21 when the computer program is run.
A computer storage medium storing a program for configuring transmission parameters, the program for configuring transmission parameters being implemented by at least one processor to implement any one of claims 1 to 12 or any one of claims 13 to 21 The steps of the method described.