WO2021056579A1 - Procédé de transmission d'informations d'indication de motif dmrs et appareil de communication - Google Patents

Procédé de transmission d'informations d'indication de motif dmrs et appareil de communication Download PDF

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Publication number
WO2021056579A1
WO2021056579A1 PCT/CN2019/109228 CN2019109228W WO2021056579A1 WO 2021056579 A1 WO2021056579 A1 WO 2021056579A1 CN 2019109228 W CN2019109228 W CN 2019109228W WO 2021056579 A1 WO2021056579 A1 WO 2021056579A1
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WIPO (PCT)
Prior art keywords
indication information
sci
terminal device
dmrs
dmrs pattern
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PCT/CN2019/109228
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English (en)
Chinese (zh)
Inventor
向铮铮
张锦芳
苏宏家
卢磊
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华为技术有限公司
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Priority to CN201980035321.6A priority Critical patent/CN112889329A/zh
Priority to PCT/CN2019/109228 priority patent/WO2021056579A1/fr
Publication of WO2021056579A1 publication Critical patent/WO2021056579A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • This application relates to the field of wireless communication, and in particular to a transmission method and communication device for DMRS pattern indication information.
  • Wireless communication technology has experienced rapid development in the past few decades. It has successively experienced the first generation of wireless communication systems based on analog communication systems, and 2G wireless communication systems represented by the global system for mobile communication (GSM) ,
  • GSM global system for mobile communication
  • WCDMA wideband code division multiple access
  • LTE long term evolution
  • 5G fifth-generation wireless communication system
  • the business supported by the wireless communication system has evolved from the initial voice and short message to now support wireless high-speed data communication.
  • the messages and data of the side link mainly rely on the physical sidelink control channel (PSCCH) and the physical sidelink shared channel (PSSCH).
  • PSCCH physical sidelink control channel
  • PSSCH physical sidelink shared channel
  • DMRS demodulation reference signal
  • the DMRS in the PSSCH supports multiple patterns, and the sender’s terminal device always uses sidelink control information (SCI) to indicate the DMRS pattern (DMRS pattern) to the receiver’s terminal device. ).
  • SCI sidelink control information
  • the terminal device of the sender may repeatedly indicate the DMRS pattern to the terminal device of the receiver, which will cause a waste of resources for side link control information. Reduce the utilization of communication resources.
  • This application provides a transmission method and communication device for DMRS style indication information, which is suitable for vehicle-to-everything (V2X), vehicle-to-everything, vehicle-to-everything, intelligent vehicle-to-vehicle, automatic driving and other scenarios.
  • V2X vehicle-to-everything
  • vehicle-to-everything vehicle-to-everything
  • intelligent vehicle-to-vehicle automatic driving and other scenarios.
  • the problem of resource waste of side link control information caused by repeatedly indicating the DMRS pattern can be solved, and the utilization rate of communication resources can be improved.
  • an embodiment of the present application provides a method for transmitting DMRS pattern indication information. This method is suitable for the first terminal device.
  • the first terminal device determines whether the DMRS pattern indication information is included in the side link control information SCI according to the number of DMRS patterns of the physical side link shared channel PSSCH in the resource pool configuration information.
  • the first terminal device sends the aforementioned SCI to the second terminal device.
  • the first terminal device will send an SCI that does not contain the DMRS pattern indication information to the second terminal device when it is determined based on the resource pool configuration information that there is no need to indicate the DMRS pattern for the second terminal device. Avoiding the waste of control resource information caused by repeatedly indicating the DMRS pattern to the second terminal device can improve the utilization of communication resources.
  • the first terminal device determines that DMRS pattern indication information is not included in the SCI.
  • the first terminal device determines to include the DMRS pattern indication information in the SCI.
  • the number of PSSCH DMRS patterns included in the resource configuration information is used to determine whether DMRS pattern indication information is included in the SCI. The method is simple and easy to implement.
  • the format of the SCI when it is determined that the SCI does not include the DMRS style indication information, the format of the SCI is the first format.
  • the format of the SCI is the second format. Different formats of SCI are used to indicate whether DMRS style indication information is included in the SCI, which can avoid occupying the information resources in the SCI and improve the utilization rate of communication resources.
  • the number of bits contained in the SCI in the first format is different from that in the SCI in the second format, or the transmission resources of the SCI in the first format and the SCI in the second format different.
  • the first terminal device sends first indication information to the second terminal device, where the first indication information is used to indicate that the SCI does not include the DMRS style indication information.
  • the first terminal device sends second indication information to the second terminal device, where the second indication information is used to indicate that the SCI includes the DMRS pattern indication information. Based on the first indication information and the second indication information independent of the SCI to inform the second terminal device whether the SCI includes the DMRS style indication information, so that the second terminal device can determine whether it includes the DMRS style indication information without interpreting the SCI , Avoiding some invalid interpretation operations by the second terminal device.
  • the first indication information is the cyclic redundancy check bit CRC scrambled by the first identifier corresponding to the SCI
  • the second indication information is corresponding to the SCI The CRC scrambled by the second identifier.
  • an embodiment of the present application provides a method for transmitting DMRS pattern indication information. This method is suitable for the second terminal device.
  • the second terminal device receives the side link control information SCI.
  • the second terminal device determines whether the SCI includes the DMRS pattern indication information of the physical side link shared channel PSSCH.
  • the second terminal device determines whether the SCI includes the DMRS pattern indication information according to the resource pool configuration information.
  • the second terminal device determines that the SCI does not include the DMRS pattern indication information.
  • the second terminal device determines that the SCI includes the DMRS pattern indication information.
  • the format of the SCI is the first format, it is determined that the DMRS style indication information is not included in the SCI. Or, if the format of the SCI is the second format, it is determined that DMRS style indication information is not included in the SCI.
  • the second terminal device receives the first indication information or the second indication information.
  • the first indication information is used to indicate that DMRS pattern indication information of PSSCH is not included in the SCI
  • the second indication information is used to indicate that DMRS pattern indication information is included in the SCI.
  • the second terminal device determines whether the SCI includes the DMRS pattern indication information according to the first indication information or the second indication information.
  • the first indication information is the cyclic redundancy check bit CRC scrambled by the first identifier corresponding to the SCI
  • the second indication information is the SCI corresponding The CRC scrambled by the second identifier.
  • an embodiment of the present application provides a method for transmitting DMRS pattern indication information. This method is suitable for the first terminal device.
  • the first terminal device determines whether the side link control information SCI includes the DMRS pattern indication information of the physical side link shared channel PSSCH according to the transmission type.
  • the first terminal device sends the SCI to the second terminal device.
  • the first terminal device when the transmission type determines that the second terminal device does not need to indicate the DMRS pattern for the second terminal device, the first terminal device will send the SCI that does not contain the DMRS pattern indication information to the second terminal device, so as to avoid repeating
  • the second terminal device indicates the waste of control resource information caused by the DMRS pattern, which can improve the utilization of communication resources.
  • the format of the SCI is the first format.
  • the format of the SCI is the second format.
  • the first terminal device sends first indication information to the second terminal device, where the first indication information is used to indicate that the SCI does not include the DMRS style indication information.
  • the first terminal device sends second indication information to the second terminal device, where the second indication information is used to indicate that the SCI includes the DMRS pattern indication information.
  • the first indication information is the cyclic redundancy check bit CRC scrambled by the first identifier corresponding to the SCI
  • the second indication information is corresponding to the SCI The CRC scrambled by the second identifier.
  • the transmission type is broadcast or type 1 multicast, it is determined that DMRS style indication information is not included in the SCI, where the receiving end of the type 1 multicast is unknown. Or, if the transmission type is unicast or type 2 multicast, it is determined that the SCI includes the DMRS style indication information, where the receiving end of the type 2 multicast is known.
  • the SCI further includes third indication information, and the third indication information is used to indicate the transmission type.
  • the first terminal device indirectly indicates whether the SCI to be sent includes DMRS pattern indication information through the transmission type, which can avoid repeated operations of indicating the DMRS pattern caused by the change of the transmission type, and can save control information resources.
  • the embodiments of the present application provide a method for transmitting DMRS pattern indication information, and the method is applicable to a second terminal device.
  • the second terminal device receives the side link control information SCI.
  • the second terminal device determines whether the SCI includes the DMRS pattern indication information of the physical side link shared channel PSSCH.
  • the format of the SCI is the first format, it is determined that the SCI does not include the DMRS style indication information. Or, if the format of the SCI is the second format, it is determined that DMRS style indication information is not included in the SCI.
  • the second terminal device receives the first indication information or the second indication information, where the first indication information is used to indicate that the SCI does not include the DMRS pattern indication information of the PSSCH.
  • the second indication information is used to indicate that the SCI includes DMRS style indication information.
  • the second terminal device determines whether the SCI includes the DMRS pattern indication information according to the first indication information or the second indication information.
  • the first indication information is the cyclic redundancy check bit CRC scrambled by the first identifier corresponding to the SCI
  • the second indication information is corresponding to the SCI The CRC scrambled by the second identifier.
  • the second terminal device determines whether the SCI includes the DMRS pattern indication information of the PSSCH according to the transmission type indicated by the third indication information.
  • the transmission type is broadcast or type 1 multicast
  • the transmission type is unicast or type 2 multicast
  • an embodiment of the present application provides a communication device.
  • the communication device is the first terminal device.
  • the communication device includes a unit for executing the DMRS pattern indication information transmission method provided by any one of the possible implementation manners of the first aspect or the third aspect, and therefore can also implement the method provided by the first aspect or the third aspect
  • the DMRS pattern indicates the beneficial effects (or advantages) possessed by the transmission method of the information.
  • an embodiment of the present application provides a communication device.
  • the communication device is a second terminal device.
  • the communication device includes a unit for executing the DMRS pattern indication information transmission method provided by any one of the possible implementations of the second aspect or the fourth aspect, and therefore can also implement the method provided by the second aspect or the fourth aspect
  • the DMRS pattern indicates the beneficial effects (or advantages) possessed by the transmission method of the information.
  • an embodiment of the present application provides a communication device, and the communication device is a first terminal device.
  • the communication device includes a memory, a processor, and a transceiver.
  • the processor is configured to call the code stored in the memory to execute the DMRS pattern indication information transmission method provided by any one of the feasible implementation manners of the first aspect or the third aspect.
  • an embodiment of the present application provides a communication device, and the communication device is a second terminal device.
  • the communication device includes a memory, a processor, and a transceiver.
  • the processor is configured to call the code stored in the memory to execute the DMRS pattern indication information transmission method provided by any one of the possible implementations of the second aspect or the fourth aspect.
  • an embodiment of the present application provides a communication device, and the communication device is a first terminal device.
  • the communication device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is configured to run the above code instructions to implement the DMRS pattern indication information transmission method provided by any one of the possible implementations of the first aspect or the third aspect, and can also implement the above-mentioned first aspect or the third aspect.
  • the DMRS pattern indicates the beneficial effects (or advantages) possessed by the transmission method of the information.
  • an embodiment of the present application provides a communication device, and the communication device is a second terminal device.
  • the communication device includes a processor and an interface circuit.
  • the interface circuit is used to receive code instructions and transmit them to the processor.
  • the processor is configured to run the foregoing code instructions to implement the DMRS pattern indication information transmission method provided by any one of the foregoing second aspect or the fourth aspect, as well as the foregoing second aspect or fourth aspect.
  • the DMRS pattern indicates the beneficial effects (or advantages) possessed by the transmission method of the information.
  • an embodiment of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium.
  • any of the first or third aspects described above is implemented.
  • the transmission method of DMRS pattern indication information provided by a feasible implementation manner can also realize the beneficial effects (or advantages) of the transmission method of DMRS pattern indication information provided by the first aspect or the third aspect.
  • an embodiment of the present application provides a computer-readable storage medium that stores instructions in the computer-readable storage medium.
  • any of the second or fourth aspects described above is implemented.
  • the transmission method of DMRS pattern indication information provided by a feasible implementation manner can also realize the beneficial effects (or advantages) of the transmission method of DMRS pattern indication information provided by the second aspect or the fourth aspect mentioned above.
  • the embodiments of the present application provide a computer program product containing instructions, when the computer program product runs on a computer, the computer can execute any one of the above-mentioned first or third aspects.
  • the provided transmission method of DMRS pattern indication information can also realize the beneficial effects (or advantages) of the transmission method of DMRS pattern indication information provided in the first aspect or the third aspect.
  • the embodiments of the present application provide a computer program product containing instructions.
  • the computer program product runs on a computer, the computer can execute any one of the above-mentioned second or fourth aspects.
  • the provided transmission method of DMRS pattern indication information can also achieve the beneficial effects (or advantages) of the DMRS pattern indication information transmission method provided in the second aspect or the fourth aspect.
  • an embodiment of the present application provides a communication system, which includes the first terminal device described above and the second terminal device described above.
  • the problem of resource waste of side link control information caused by repeated indication of the DMRS pattern can be solved, and the utilization rate of communication resources can be improved.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of time domain division of a DMRS pattern provided by an embodiment of the present application
  • FIG. 3 is a schematic diagram of frequency domain division of a DMRS pattern provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of time-frequency domain division of a DMRS pattern provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a first method for transmitting DMRS pattern indication information according to an embodiment of the present application
  • FIG. 6 is a schematic diagram of an SCI structure provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another flow of a method for transmitting DMRS pattern indication information provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of another SCI structure provided by an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 10 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 11 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 13 is another schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 14 is a schematic diagram of another structure of a communication device provided by an embodiment of the present application.
  • the embodiment of the present application provides a transmission method of DMRS style indication information and is applicable to various communication systems capable of data or message transmission through side links, for example: global system of mobile communication (GSM) System, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) system, general packet radio service (GPRS), long term evolution (long term) evolution, LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), global interconnected microwave access (worldwide interoperability for microwave access, WiMAX) communication systems, fifth generation (5G) systems, new radio (NR), and communication systems after NR communication systems, etc.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • long term evolution long term evolution
  • LTE long term evolution
  • LTE LTE frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication
  • the first terminal device or the second terminal device involved in the embodiments of the present application may be user equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal,
  • the terminal, wireless communication equipment, user agent or user device can also be a cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital processing ( personal digital assistant, PDA), handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, roadside units, wearable devices, terminal devices in the future 5G network or future evolutionary public
  • the terminal equipment in the land mobile communication network public land mobile network, PLMN
  • the first terminal device or the second terminal device will be collectively described.
  • the network device involved in the embodiments of this application may be a device used to communicate with terminal devices.
  • the network device may be a global system of mobile communication (GSM) system or a code division multiple access (CDMA) system.
  • the base station (transceiver station, BTS) in) can also be the base station (NodeB, NB) in the wideband code division multiple access (WCDMA) system, or the evolved base station ( evolutional NodeB, eNB or eNodeB), it can also be a wireless controller in the cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, and
  • the network equipment in the 5G network or the network equipment in the future evolved PLMN network, etc., are not limited in the embodiment of the present application.
  • the predefined can be understood as defined by the protocol.
  • the signaling configuration can be understood as configured by high-level or physical layer signaling.
  • the high-level signaling may include, for example, radio resource control (radio resource control, RRC), medium access control (medium access control, MAC) control element (CE), and radio link control (radio link control, RLC). Signaling etc.
  • the physical layer signaling may include, for example, downlink control information (DCI), signaling transmitted through a downlink physical layer channel, and the like.
  • the physical downlink channel may be, for example, PDCCH or PDSCH.
  • FIG. 1 is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • the communication system may include a first terminal device and a second terminal device, and the first terminal device and the second terminal device transmit messages or data through a side link.
  • the so-called side link is a new wireless link defined for direct communication between two terminal devices in a wireless network. Through the side link, messages or data can be directly transmitted between two terminal devices without forwarding through network devices such as base stations.
  • a physical layer side link shared channel (PSSCH) is also defined.
  • PSSCH physical layer side link shared channel
  • the first terminal device in order to enable the second terminal device to correctly receive the PSSCH sent by the first terminal device, the first terminal device will add a DMRS to the PSSCH for the second terminal device to perform channel estimation.
  • the DMRS can support multiple styles, and the first terminal device will always control information through the sidelink control.
  • SCI indicates the DMRS pattern for the second terminal device.
  • the DMRS pattern does not need to be indicated under the NR system, for example, when the first terminal device sends a message by broadcasting, it does not need to indicate the DMRS pattern. Therefore, if the first terminal device continues to indicate the DMRS pattern to the second terminal device, it will cause a waste of resources of side link control information, and reduce the utilization rate of communication resources.
  • the technical problem to be solved by the method for transmitting DMRS pattern indication information provided by the embodiment of the present application is: how to avoid waste of resources of side link control information caused by repeatedly indicating the DMRS pattern, and improve the utilization rate of communication resources.
  • DMRS style in general terms, is the distribution of DMRS in the PSSCH.
  • different DMRS patterns can be divided from different angles such as time domain, frequency domain, time domain, and frequency domain. From the perspective of the time domain, different DMRS patterns can be divided based on information such as the number of basic time granularities occupied by the DMRS in a certain time unit and the position of the basic time granularities occupied.
  • the aforementioned time unit includes time slots, subframes, mini-slots, etc., which are not limited here.
  • the above-mentioned basic time granularity includes symbols.
  • FIG. 2 is a schematic diagram of time domain division of a DMRS pattern provided by an embodiment of the present application.
  • Figure 2 shows three DMRS patterns.
  • pattern 1 the DMRS occupies three symbols in a time slot, which are the 3rd, 7th and 11th symbols respectively.
  • the DMRS in the second pattern also occupies three symbols, but the difference from the first pattern is that the positions of the symbols occupied by the DMRS are different.
  • the DMRS occupies the 5th, 7th, and 9th symbols in a time slot.
  • style three and style one and style two is that the number of symbols occupied by the DMRS is different, and the positions of the symbols occupied are also different.
  • different DMRS patterns can be divided based on information such as the number of basic frequency domain granularities occupied by the DMRS in a certain frequency unit and the position of the occupied basic frequency domain granularities.
  • the aforementioned frequency unit includes a physical resource block (PRB), etc., which is not limited here.
  • the above-mentioned basic frequency granularity includes sub-carriers, etc., for example, please refer to FIG. 3 together, which is a schematic diagram of frequency domain division of a DMRS pattern provided in an embodiment of the present application. Figure 3 shows three DMRS patterns.
  • the DMRS occupies three sub-carriers of 12 consecutive sub-carriers corresponding to one PRB, which are the 3rd, 5th and 8th sub-carriers respectively.
  • the DMRS in pattern two also occupies three of the 12 consecutive sub-carriers corresponding to a PRB, but the difference from pattern one lies in the position of the sub-carriers occupied by DMRS, where DMRS occupies the third and fourth sub-carriers. And the tenth subcarrier.
  • the difference between pattern 3 and pattern 1 and pattern 2 is that the number of subcarriers occupied by the DMRS is different, and the positions of the subcarriers occupied are also different.
  • different DMRS patterns can be divided based on information such as the time-frequency resource granularity position occupied by the DMRS in a time-frequency resource unit.
  • the above-mentioned time-frequency resource unit includes resource block (resource block, RB), etc.
  • one RB may correspond to one time slot in the time domain, and may correspond to 12 consecutive subcarriers in the frequency domain.
  • the foregoing time-frequency resource granularity includes resource elements (resource elements, RE) and so on.
  • one RE corresponds to one symbol in the time domain, and corresponds to one subcarrier in the frequency domain.
  • FIG. 4 together is a schematic diagram of time-frequency domain division of a DMRS pattern provided by an embodiment of the present application.
  • Figure 4 shows two DMRS patterns. The difference between pattern 1 and pattern 2 is that DMRS occupies different REs in one RB.
  • the transmission type of multicast between the first terminal device and the second terminal device is classified into the first type of multicast and the second type of multicast.
  • the first terminal device sends a message to a certain group of terminal devices through the first type of multicast
  • the first terminal device knows the number of members in the multicast group and the information of each member.
  • Each member will feed back a response message to the first terminal device, and this response message may include an acknowledgement (acknowledgement, ACK) or a negative acknowledgement (NACK).
  • ACK acknowledgement
  • NACK negative acknowledgement
  • the first terminal device will set a communication distance threshold, and only send messages to receivers within this distance.
  • the receiving end For a certain receiving end, it needs to determine whether the communication distance between itself and the first terminal device is less than or equal to this communication distance threshold. If the receiving end determines that the communication distance between itself and the first terminal device is less than or equal to the communication distance threshold, it is determined that it needs to correctly receive the message sent by the first terminal device. If it correctly receives the message sent by the first terminal device, it does not feed back a response message. If it receives an error, it feeds back NACK to the first terminal device. Since the first terminal device cannot determine in advance whether the receiving end is within the communication distance, in this second type of multicast based on the communication distance, the first terminal device cannot know which receiving end is available before sending a message.
  • FIG. 5 is a schematic flowchart of a method for transmitting DMRS pattern indication information according to an embodiment of the present application. As shown in FIG. 5, the method for transmitting DMRS pattern indication information includes the following steps:
  • the first terminal device determines whether the side link control information SCI includes DMRS pattern indication information according to the number of DMRS patterns of the physical side link shared channel PSSCH in the resource pool configuration information.
  • the first terminal device may obtain resource pool configuration information, and determine whether the SCI to be sent includes DMRS pattern indication information according to the number of PSSCH DMRS patterns included in the resource pool configuration information.
  • the resource pool is a collection of available time-frequency domain resources for side-line communication between the first terminal device and the second terminal.
  • the resource pool configuration information is information describing the foregoing resource pool, and can be used for side-line communication between the first terminal and the second terminal.
  • the resource pool configuration information includes at least the number of DMRS patterns of the PSSCH, and the number is equal to or greater than one.
  • the foregoing resource pool configuration information may be pre-configured when the first terminal device leaves the factory, or may be received from the network device.
  • the above-mentioned DMRS pattern indication information is used to indicate different DMRS patterns.
  • the DMRS pattern indication information may specifically be two bits. When the value of the two bits is 00, it may indicate the first type of DMRS pattern, and when the value of the two indication bits is 01, it may indicate the second type. DMRS pattern, when the value of the two indication bits is 10, the third DMRS pattern can be indicated, and so on.
  • the first terminal device may first obtain its corresponding resource pool configuration information. Then, the first terminal device can determine whether the number of DMRS patterns of the PSSCH included in the resource pool configuration information is equal to one. If the terminal device determines that the number is equal to 1, it means that only one DMRS pattern is included in the aforementioned resource pool, that is, the first terminal device does not need to repeatedly indicate the DMRS pattern for the second terminal device. Therefore, the first terminal device can determine that the SCI to be sent does not include the DMRS pattern indication information. If the terminal device determines that the number is greater than 1, it means that the resource pool contains at least two DMRS patterns. Therefore, the first terminal device can determine that the SCI to be sent includes the DMRS pattern indication information. The number of PSSCH DMRS patterns included in the resource configuration information is used to determine whether DMRS pattern indication information is included in the SCI. The method is simple and easy to implement.
  • the first terminal device may also use other methods to determine whether the SCI to be sent includes DMRS pattern indication information. For example, the first terminal device may determine whether its corresponding DMRS pattern will change in the subsequent preset time period according to the system configuration information. If the first terminal device determines that its corresponding DMRS pattern will not change in the subsequent preset time period, it can determine that the SCI to be sent does not include the DMRS pattern indication information. If the first terminal device determines that its corresponding DMRS pattern will not change in the subsequent preset time period, it may determine that the SCI to be sent includes the DMRS pattern indication information.
  • the first terminal device sends the SCI to the second terminal device.
  • the first terminal device after determining whether the SCI to be sent by the first terminal device includes DMRS indication information, it may determine the SCI to be sent according to the result of whether the DMRS indication information is included, and set it in the corresponding time and frequency. Send the SCI on the resource.
  • the first terminal device may send the SCI in the first format to the second terminal device on the preset time-frequency resource. If the first terminal device determines that the SCI to be sent includes DMRS pattern indication information, it may send the SCI in the second format to the second terminal device on the preset time-frequency resource.
  • the format of the SCI can be divided based on the number of bits it contains. That is, the number of bits contained in the SCI in the first format and the SCI in the second format are different.
  • FIG. 6 is a schematic diagram of an SCI structure provided by an embodiment of the present application.
  • SCI1 may include 57 bits
  • SCI2 may include 60 bits
  • SCI2 includes DMRS pattern indication information. If the first terminal device determines that the SCI to be sent does not include DMRS indication information, it may send the SCI1 in FIG. 6 to the second terminal device. If the first terminal device determines that the SCI to be sent includes DMRS pattern indication information, it can send SCI2 to the second terminal device.
  • the format of the SCI can also be divided based on its transmission resources. That is, the first terminal device can send the aforementioned SCI on different time-frequency resources. For example, if the first terminal device determines that the SCI to be sent does not include DMRS indication information, it may send the SCI to the second terminal device on the preset first time-frequency resource. If the first terminal device determines that the SCI to be sent includes DMRS pattern indication information, it may send the SCI2 to the second terminal device on the preset second time-frequency resource.
  • Different formats of SCI are used to indicate whether DMRS style indication information is included in the SCI, which can avoid occupying signaling resources in the SCI and improve the utilization rate of communication resources.
  • the first terminal device may send an SCI that does not contain DMRS pattern indication information to the second terminal device (for ease of description, The first SCI will be substituted for the description below).
  • the first terminal device may also send a first indication information to the above-mentioned second terminal device, where the first indication information is used to indicate that the DMRS pattern indication information is not included in the first SCI.
  • the first terminal device may send the SCI containing the DMRS pattern indication information (for convenience of description, the second SCI will be substituted for the description below).
  • the first terminal device may also send second indication information to the second terminal device, where the second indication information is used to indicate that the second SCI includes the DMRS pattern indication information.
  • the first indication information may be a cyclic redundancy check (cyclic redundancy check, CRC) scrambled by the first identifier corresponding to the first SCI.
  • the cyclic redundancy check bit is used for data check of the first SCI.
  • the second indication information may be a cyclic redundancy check bit scrambled by the second identifier corresponding to the second SCI.
  • the first identifier and the second identifier are different identifiers.
  • the first identifier may be a bit with a value of 1
  • the second identifier may be a bit with a value of 0.
  • the first indication information may also be radio resource control (radio resource control, RRC) configuration information including the first identifier forwarded by the first terminal device.
  • the second indication information may also be RRC configuration information including the second identifier forwarded by the first terminal device.
  • RRC radio resource control
  • the second terminal device receives the SCI from the first terminal device.
  • the second terminal device when the format of the SCI sent by the first terminal device is not unique, the second terminal device needs to perform a blind check to receive the aforementioned SCI. In the case that the format of the SCI sent by the first terminal device is fixed, the second terminal device may receive the SCI sent from the first terminal device on the time-frequency resource of the SCI sent by the first terminal device.
  • the second terminal device may also receive the first indication information or the first indication information on the corresponding time-frequency resource. 2. Instruction information.
  • the second terminal device determines whether the SCI contains the DMRS pattern indication information of the PSSCH.
  • the second terminal device can determine whether the aforementioned SCI contains DMRS pattern indication information.
  • the second terminal device may first obtain its corresponding resource pool configuration information.
  • the above-mentioned resource pool configuration information may be pre-configured by the second terminal device at the factory, or may be received by the first terminal device from the network device and forwarded to it, or it may be directly received from the network device. , This application does not make specific restrictions.
  • the second terminal device may determine whether the received SCI contains DMRS patterns according to the number of DMRS patterns of the PSSCH included in the resource pool configuration information. If the second terminal device determines that the number is equal to 1, it can be determined that the above-mentioned SCI does not include the DMRS pattern indication information. If the second terminal device determines that the number is greater than 1, it can determine that the SCI includes the DMRS pattern indication information.
  • the second terminal device can determine the format of the SCI. If the second terminal device determines that the SCI is an SCI of the first format, it can determine that the SCI does not include DMRS pattern indication information. If the second terminal device determines that the SCI is the SCI of the second format, it can determine that the SCI includes the DMRS pattern indication information. In specific implementation, the second terminal device may determine the format of the SCI according to the number of bits contained in the SCI or the transmission resource corresponding to the SCI and other information.
  • the process of the second terminal device determining whether DMRS pattern indication information is included in the SCI is described. After the second terminal device blindly detects the aforementioned SCI, it first determines the number of bits contained in the SCI. Then, the second terminal device can determine the format of the SCI according to the number of bits contained in the SCI and the mapping relationship between the format of the SCI and the number of bits contained in the SCI. For example, suppose that the SCI of the first format contains 57 bits, and the SCI of the second format contains 60 bits.
  • the second terminal device determines that the SCI contains 57 bits, it can be determined that the SCI is an SCI in the first format, and then it can be determined that the SCI does not include DMRS pattern indication information. If the second terminal device determines that the SCI includes 60 bits, it can determine that the SCI is an SCI in the second format, and then can determine that the SCI includes DMRS pattern indication information.
  • the second terminal device if the second terminal device receives the first indication information when the SCI is received, it can be determined that the SCI does not include the DMRS pattern indication information. If the second terminal device receives the second indication information when the SCI is received, it can be determined that the SCI does not include the DMRS pattern indication information. For example, after the second terminal device receives the aforementioned SCI and its corresponding cyclic redundancy check bit, if the second terminal device determines that the aforementioned cyclic redundancy check bit is scrambled by the first identifier, it can determine the SCI does not include DMRS style indication information.
  • the second terminal device determines that the cyclic redundancy check bit is scrambled by the second identifier, it can determine that the SCI includes the DMRS pattern indication information. For another example, after receiving the aforementioned SCI, the second terminal device receives the RRC configuration information from the first terminal device. If the second terminal device determines that the RRC configuration information includes the first identifier, it can determine that the SCI is not included in the RRC configuration information. Include DMRS style indication information. If the second terminal device determines that the RRC configuration information includes the second identifier, it may determine that the SCI includes the DMRS pattern indication information.
  • the second network device determines that the DMRS pattern indication information is not included in the SCI, it does not extract the DMRS pattern indication information. If the second network device determines that the SCI includes the DMRS style indication information, it can extract the DMRS style indication information from the SCI according to the location information corresponding to the predefined DMRS style indication information, and further determine the PSSCH included The style of DMRS.
  • the above-mentioned location information may be related data agreed in advance by the first terminal device and the second terminal device to indicate the specific location of the DMRS pattern indication information in the SCI.
  • the above-mentioned location information indicates one or more reserved bits in the SCI. In other words, the above-mentioned DMRS pattern indication information can be carried in the reserved bits of the SCI.
  • the first terminal device will send an SCI that does not contain the DMRS pattern indication information to the second terminal device when it is determined based on the resource pool configuration information that there is no need to indicate the DMRS pattern for the second terminal device. Avoiding the waste of control resource information caused by repeatedly indicating the DMRS pattern to the second terminal device can improve the utilization of communication resources.
  • FIG. 7 is a schematic flowchart of another method for transmitting DMRS pattern indication information according to an embodiment of the present application. As shown in FIG. 7, the above-mentioned transmission method of DMRS pattern indication information includes the following steps:
  • the first terminal device determines whether the side link control information SCI includes DMRS pattern indication information according to the transmission type.
  • the first terminal device may determine its current transmission type (cast type) of data or signaling transmission, and determine whether the SCI to be sent includes DMRS pattern indication information according to the transmission type.
  • the transmission type mainly includes unicast, broadcast, the first multicast and the second type of multicast described above.
  • the first terminal device may determine its current transmission type of data or signaling transmission according to the transmission control information included in its system configuration information. If the first terminal device determines that the transmission type is unicast, since the DMRS pattern will change with the change of the communication link status in the case of unicast, the first terminal device can determine that the SCI to be sent includes a DMRS pattern indication information. If the first terminal device determines that the transmission type is broadcast, since the DMRS pattern is generally fixed in the case of broadcast, the first terminal device can determine that the SCI to be sent does not include DMRS pattern indication information.
  • the first terminal device determines that the transmission type is the first type of multicast, since the receiving end is known in the case of the first type of multicast, the first terminal device can determine that the SCI to be sent includes DMRS style indication information . If the first terminal device determines that the transmission type is the second type of multicast, since the receiving end is unknown in the case of the second type of multicast, the first terminal device can determine that the SCI to be sent does not include DMRS style indication information . Here, the first terminal device determines whether the SCI to be sent includes DMRS pattern indication information through the transmission type, which can avoid the repeated operation of indicating the DMRS pattern caused by the change of the transmission type, and save the side link control information. Resources.
  • the first terminal device may also use other methods to determine whether the SCI to be sent includes DMRS pattern indication information. For example, the first terminal device may determine whether its corresponding DMRS pattern will change in the subsequent preset time period according to the system configuration information. If the first terminal device determines that its corresponding DMRS pattern will not change in the subsequent preset time period, it can determine that the SCI to be sent does not include the DMRS pattern indication information. If the first terminal device determines that its corresponding DMRS pattern will not change in the subsequent preset time period, it may determine that the SCI to be sent includes the DMRS pattern indication information.
  • S220 The first terminal device sends the SCI to the second terminal device.
  • the first terminal device may determine the SCI to be sent according to the result of whether the DMRS indication information is included, and write it in the corresponding The SCI is sent on the time-frequency resource.
  • the first terminal device may send the SCI including the third indication information.
  • the third indication information may be included in the reserved bits of the SCI, and may also be included in other bits except the above-mentioned reserved bits, which is not specifically limited in this application.
  • the third indication information is specifically used to indicate the transmission type of data or signaling between the first terminal device and the second terminal device. This transmission type mainly includes unicast, broadcast, type 1 multicast and type 2 multicast as described above. In this way, the subsequent second terminal device can determine the specific transmission type based on the third indication information, and determine whether the received SCI includes the DMRS pattern indication information according to the specific transmission type. In other words, the first terminal device indirectly indicates to the second terminal device whether the SCI sent by it includes the DMRS pattern indication information through the third indication information.
  • the first terminal device determines that the SCI to be sent does not include DMRS indication information, it determines that the third indication information included in the SCI sent by the first terminal device is used to indicate that the current transmission type is broadcast or type 1 Multicast. If the first terminal device determines that the SCI to be sent includes DMRS indication information, the third indication information included in the SCI sent by the first terminal device is used to indicate that the current transmission type is unicast or type 2 multicast.
  • the above-mentioned third indication information may be two indication bits, and then the four value situations of the two indication bits correspond to the above-mentioned four transmission types.
  • FIG. 8 is a schematic diagram of another SCI structure provided by an embodiment of the present application.
  • Figure 8 shows two SCIs that the first terminal can send, including SCI3 and SCI4.
  • the first terminal device determines that the SCI to be sent does not include DMRS pattern indication information, it can send the aforementioned SCI4.
  • the two indication bits included in the SCI4 may take values of 00 or 01, which are used to indicate that the current transmission type is broadcast or type 1 multicast.
  • the first terminal device determines that the SCI to be sent includes DMRS pattern indication information, it can send the aforementioned SCI3.
  • the two indication bits included in the SCI3 may take the value 10 or 11, which are used to indicate that the current transmission type is unicast or type 2 multicast.
  • the first terminal device may send the SCI in the first format to the second terminal device on the preset time-frequency resource. If the first terminal device determines that the SCI to be sent includes DMRS pattern indication information, it may send the SCI in the second format to the second terminal device on the preset time-frequency resource.
  • the division process of the SCI format can be specifically referred to the division process of the SCI format described in step S120 in the first embodiment, which will not be repeated here.
  • the first terminal device may send the first SCI that does not include the DMRS pattern indication information to the second terminal device.
  • the first terminal device may also send a first indication information to the above-mentioned second terminal device, where the first indication information is used to indicate that the DMRS pattern indication information is not included in the first SCI. If the first terminal device determines that the SCI to be sent includes the DMRS pattern indication information, it may send the second SCI containing the DMRS pattern indication information.
  • the first terminal device may also send second indication information to the second terminal device, where the second indication information is used to indicate that the second SCI includes the DMRS pattern indication information.
  • the second indication information is used to indicate that the second SCI includes the DMRS pattern indication information.
  • the second terminal device receives the SCI from the first terminal device.
  • the second terminal device when the format of the SCI sent by the first terminal device is not unique, the second terminal device needs to perform a blind check to receive the aforementioned SCI. In the case that the format of the SCI sent by the first terminal device is fixed, the second terminal device may receive the SCI sent from the first terminal device on the time-frequency resource of the SCI sent by the first terminal device.
  • the second terminal device may also receive the first indication information on the corresponding time-frequency resource Or the second instruction
  • the second terminal device determines whether the SCI contains the DMRS pattern indication information of the PSSCH.
  • the second terminal device can determine whether the aforementioned SCI contains DMRS pattern indication information.
  • the second terminal device may extract the above-mentioned third indication information. Then, the second terminal device can determine the current transmission type according to the third indication information. If the second terminal device determines that the current transmission type is broadcast or type 1 multicast according to the third indication information, it may determine that the received SCI does not include the DMRS pattern indication information. If the second terminal device determines that the current transmission type is unicast or type 2 multicast according to the third indication information, it may determine that the received SCI includes the DMRS pattern indication information.
  • the first terminal device determines that the value of the two indicator bits contained in SCI4 is 00 or 01, and then it can determine that the current transmission type is broadcast or type 1. Multicast, and then it can be determined that the SCI4 does not include DMRS style indication information.
  • the first terminal device determines that the value of the two indicator bits contained in the SCI3 is 10 or 11. It can determine that the current transmission type is unicast or type 2 multicast, and then can determine that the SCI3 is Include DMRS style indication information.
  • the format of the SCI may be determined. If the second terminal device determines that the SCI is an SCI of the first format, it can determine that the SCI does not include DMRS pattern indication information. If the second terminal device determines that the SCI is the SCI of the second format, it can determine that the SCI includes the DMRS pattern indication information.
  • the process for the second terminal device to determine whether the received SCI contains DMRS style indication information based on the format of the SCI can refer to the process of determining whether the SCI contains the DMRS style indication information in the SCI format described in step S140 in the first embodiment. I will not repeat it here.
  • the second terminal device if the second terminal device receives the first indication information when the SCI is received, it can be determined that the SCI does not include the DMRS pattern indication information. If the second terminal device receives the second indication information when the SCI is received, it can be determined that the SCI does not include the DMRS pattern indication information. For the specific process, refer to the process of determining whether the DMRS pattern indication information is included in the SCI according to the first indication information or the second indication information described in step S140 in the first embodiment, which will not be repeated here.
  • the second network device determines that the DMRS pattern indication information is not included in the SCI, it does not extract the DMRS pattern indication information. If the second network device determines that the SCI includes the DMRS style indication information, it can extract the DMRS style indication information from the SCI according to the location information corresponding to the predefined DMRS style indication information, and further determine the PSSCH included The style of DMRS.
  • the above-mentioned location information may be related data agreed in advance by the first terminal device and the second terminal device to indicate the specific location of the DMRS pattern indication information in the SCI.
  • the above-mentioned location information indicates one or more reserved bits in the SCI. In other words, the above-mentioned DMRS pattern indication information can be carried in the reserved bits of the SCI.
  • the first terminal device determines that there is no need to indicate the DMRS pattern for the second terminal device when the current transmission type is broadcast or type 1 multicast, and will send to the second terminal device that the DMRS pattern is not included
  • the SCI of the indication information can avoid the waste of control resource information caused by repeatedly indicating the DMRS pattern to the second terminal device, and can improve the utilization rate of communication resources.
  • FIG. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication device may be the first terminal device described in Embodiment 1 above, and the communication device may be used to perform the function of the first terminal device in Embodiment 1 above.
  • the communication device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used to process the communication protocol and communication data, and to control the communication device, execute the software program, and process the data of the software program.
  • the memory is mainly used to store software programs and data.
  • the radio frequency circuit is mainly used for the conversion of baseband signal and radio frequency signal and the processing of radio frequency signal.
  • the antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by a user who uses the communication device and output data to the user. It should be noted that in some scenarios, the communication device may not include an input and output device.
  • the processor When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna.
  • the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data.
  • FIG. 9 only one memory and processor are shown in FIG. 9. In an actual communication device product, there may be one or more processors and one or more memories.
  • the memory may also be referred to as a storage medium or storage device.
  • the memory may be set independently of the processor, or may be integrated with the processor, which is not limited in the embodiment of the present application.
  • the processor may include a baseband processor and/or a central processing unit.
  • the baseband processor is mainly used to process communication protocols and communication data
  • the central processing unit is mainly used to control the entire terminal device. , Execute the software program, and process the data of the software program.
  • the processor in FIG. 9 can integrate the functions of the baseband processor and the central processing unit.
  • the baseband processor and the central processing unit can also be independent processors and are interconnected by technologies such as a bus.
  • the terminal device may include multiple baseband processors to adapt to different network standards, the terminal device may include multiple central processors to enhance its processing capabilities, and the various components of the terminal device may be connected through various buses.
  • the aforementioned baseband processor may also be expressed as a baseband processing circuit or a baseband processing chip.
  • the above-mentioned central processing unit can also be expressed as a central processing circuit or a central processing chip.
  • the function of processing the communication protocol and the communication data may be built in the processor, or stored in the storage unit in the form of a software program, and the processor executes the software program to realize the baseband processing function.
  • the antenna and radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the communication device, and the processor with the processing function may be regarded as the processing unit of the communication device.
  • the communication device includes a transceiving unit 910 and a processing unit 920.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiving unit 910 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 910 can be regarded as the sending unit, that is, the transceiving unit 910 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • processing unit 920 is configured to perform operations such as determining whether the sent SCI includes DMRS pattern indication information according to the number of PSSCH DMRS patterns included in the resource pool configuration information in the first embodiment.
  • the transceiver unit 910 is used to perform the SCI sending operation in the first embodiment above.
  • the processing unit 920 is configured to: if the number of DMRS patterns of the PSSCH in the resource pool configuration information is equal to 1, determine that DMRS pattern indication information is not included in the SCI. Or, if the number of DMRS patterns of the PSSCH in the resource pool configuration information is greater than 1, it is determined that the DMRS pattern indication information is included in the SCI.
  • the processing unit 920 determines that the SCI does not include the DMRS style indication information
  • the format of the SCI is the first format.
  • the processing unit 920 determines that the SCI includes the DMRS style indication information
  • the format of the SCI is the second format.
  • the transceiving unit 910 is configured to send first indication information to a second terminal device, and the first indication information is used to indicate that the SCI does not include the DMRS style indication information. Or, it is used to send second indication information to the second terminal device, where the second indication information is used to indicate that the SCI includes the DMRS pattern indication information.
  • the transceiving unit 910 is configured to send first indication information to the second terminal device, and the first indication information is used to indicate that the SCI does not include the DMRS style indication information. Or, sending second indication information to the second terminal device, where the second indication information is used to indicate that the SCI includes the DMRS pattern indication information.
  • the first indication information is the cyclic redundancy check bit CRC scrambled by the first identifier corresponding to the SCI
  • the second indication information is the CRC corresponding to the SCI CRC scrambled by the second identifier.
  • the processing unit 920 of the communication device determines based on the number of DMRS patterns of the PSSCH that there is no need to indicate the DMRS pattern for the second terminal device, and then sends the DMRS pattern indication to the second terminal device through the transceiver unit 910
  • the SCI of the information can avoid the problem of resource waste of side link control information caused by repeatedly indicating the DMRS pattern, and can improve the utilization rate of communication resources.
  • FIG. 10 is a schematic diagram of another structure of a communication device provided by an embodiment of the present application.
  • the communication device includes a processor 1010, a data sending processor 1020, and a data receiving processor 1030.
  • the processing unit 920 in the foregoing embodiment may be the processor 1010 in FIG. 10, and completes corresponding functions.
  • the transceiving unit 910 in the foregoing embodiment may be the sending data processor 1020 and/or the receiving data processor 1030 in FIG. 10.
  • the channel encoder and the channel decoder are shown in FIG. 10, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are merely illustrative.
  • FIG. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • the communication device may be the second terminal device described in Embodiment 1 above, and the communication device may be used to perform the function of the second terminal device in Embodiment 1 above.
  • the communication device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the communication device shown in FIG. 11 is similar in structure to the communication device shown in FIG. 9, and the specific content can be referred to the foregoing description of the communication device in FIG. 9, which will not be repeated here.
  • the antenna and radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the communication device, and the processor with the processing function may be regarded as the processing unit of the communication device.
  • the communication device includes a transceiver unit 1110 and a processing unit 1120.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiving unit 1110 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 1110 can be regarded as the sending unit, that is, the transceiving unit 1110 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiver unit 1110 is used to perform the SCI receiving operation in the first embodiment above
  • processing unit 1120 is used to perform operations such as determining whether the received SCI includes DMRS pattern indication information in the first embodiment above.
  • the processing unit is configured to determine whether the SCI includes the DMRS pattern indication information according to resource pool configuration information.
  • the processing unit is further configured to determine that if the number of DMRS patterns of the PSSCH in the resource pool configuration information is equal to 1, determine that the SCI does not include DMRS pattern indication information. Or, if the number of DMRS patterns of the PSSCH in the resource pool configuration information is greater than 1, it is determined that the SCI includes DMRS pattern indication information.
  • the processing unit is further configured to: if the format of the SCI is the first format, determine that the SCI does not include DMRS style indication information. Or, if the format of the SCI is the second format, it is determined that DMRS style indication information is not included in the SCI.
  • the foregoing transceiver unit is further configured to: receive the first indication information or the second indication information.
  • the first indication information is used to indicate that the DMRS pattern indication information of the PSSCH is not included in the SCI
  • the second indication information is used to indicate that the DMRS pattern indication information is included in the SCI.
  • the processing unit is further configured to determine whether the SCI includes the DMRS pattern indication information according to the first indication information or the second indication information.
  • the first indication information is the cyclic redundancy check bit CRC scrambled by the first identifier corresponding to the SCI
  • the second indication information is the CRC corresponding to the SCI. 2. Identify the scrambled CRC.
  • FIG. 12 is a schematic diagram of another structure of a communication device provided by an embodiment of the present application.
  • the communication device includes a processor 1210, a data sending processor 1220, and a data receiving processor 1230.
  • the processing unit 1120 in the foregoing embodiment may be the processor 1210 in FIG. 12, and completes corresponding functions.
  • the transceiving unit 1210 in the foregoing embodiment may be the sending data processor 1220 and/or the receiving data processor 1230 in FIG. 12.
  • the channel encoder and the channel decoder are shown in FIG. 12, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are merely illustrative.
  • the communication device shown in FIG. 9 may also be the first terminal device in the second embodiment.
  • the communication device can be used to execute the method or step implemented by the first terminal device in the second embodiment.
  • the antenna and radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the communication device
  • the processor with the processing function may be regarded as the processing unit of the communication device.
  • the communication device includes a transceiving unit 910 and a processing unit 920.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiving unit 910 can be regarded as the receiving unit
  • the device for implementing the sending function in the transceiving unit 910 can be regarded as the sending unit, that is, the transceiving unit 910 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • processing unit 920 is configured to perform operations such as determining whether the sent SCI includes DMRS pattern indication information according to the transmission type in the second embodiment.
  • the transceiver unit 910 is configured to perform the sending operation of the SCI in the second embodiment above.
  • the processing unit determines that the SCI does not include the DMRS style indication information
  • the format of the SCI is the first format.
  • the processing unit determines that the SCI includes the DMRS style indication information
  • the format of the SCI is the second format.
  • the transceiving unit is configured to send first indication information to the second terminal device, and the first indication information is used to indicate that the SCI does not include the DMRS pattern indication information. Or, it is used to send second indication information to the second terminal device, where the second indication information is used to indicate that the SCI includes the DMRS pattern indication information.
  • the first indication information is the cyclic redundancy check bit CRC scrambled by the first identifier corresponding to the SCI
  • the second indication information is the CRC corresponding to the SCI. 2. Identify the scrambled CRC.
  • the processing unit is configured to determine that the SCI does not include DMRS style indication information if the transmission type is broadcast or type 1 multicast, wherein the receiving end of the type 1 multicast unknown. Or, if the transmission type is unicast or type 2 multicast, determine that the SCI includes DMRS style indication information, where the receiving end of the type 2 multicast is known.
  • the processing unit 920 of the communication device determines that there is no need to indicate the DMRS pattern for the second terminal device based on the transmission type, it sends the SCI that does not contain the DMRS pattern indication information to the second terminal device through the transceiver unit 910.
  • the problem of resource waste of side link control information caused by repeated indication of the DMRS pattern is avoided, and the utilization rate of communication resources can be improved.
  • FIG. 10 is a schematic diagram of another structure of a communication device provided by an embodiment of the present application.
  • the communication device includes a processor 1010, a data sending processor 1020, and a data receiving processor 1030.
  • the processing unit 920 in the foregoing embodiment may be the processor 1010 in FIG. 10, and completes corresponding functions.
  • the transceiving unit 910 in the foregoing embodiment may be the sending data processor 1020 and/or the receiving data processor 1030 in FIG. 10.
  • the channel encoder and the channel decoder are shown in FIG. 10, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are merely illustrative.
  • the communication device can also be the second terminal device described in the second embodiment above, and the communication device can be used to perform the function of the second terminal device in the second embodiment above.
  • the communication device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the communication device shown in FIG. 11 is similar in structure to the communication device shown in FIG. 9, and the specific content can be referred to the foregoing description of the communication device in FIG. 9, which will not be repeated here.
  • the antenna and radio frequency circuit with the transceiver function may be regarded as the transceiver unit of the communication device, and the processor with the processing function may be regarded as the processing unit of the communication device.
  • the communication device includes a transceiver unit 1110 and a processing unit 1120.
  • the transceiving unit may also be referred to as a transceiver, a transceiver, a transceiving device, and so on.
  • the processing unit may also be called a processor, a processing board, a processing module, a processing device, and so on.
  • the device for implementing the receiving function in the transceiving unit 1110 can be regarded as the receiving unit, and the device for implementing the sending function in the transceiving unit 1110 can be regarded as the sending unit, that is, the transceiving unit 1110 includes a receiving unit and a sending unit.
  • the receiving unit may also be called a receiver, a receiver, or a receiving circuit.
  • the transmitting unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit.
  • transceiver unit 1110 is configured to perform the SCI receiving operation in the second embodiment above
  • processing unit 1120 is configured to perform operations such as determining whether the received SCI includes DMRS pattern indication information in the second embodiment above.
  • the processing unit is further configured to determine that the SCI does not include DMRS style indication information if the format of the SCI is the first format. Or, if the format of the aforementioned SCI is the second format, it is determined that the aforementioned SCI does not include DMRS style indication information.
  • the foregoing transceiver unit is further configured to receive the first indication information or the second indication information.
  • the first indication information is used to indicate that the DMRS pattern indication information of the PSSCH is not included in the SCI
  • the second indication information is used to indicate that the DMRS pattern indication information is included in the SCI.
  • the processing unit is further configured to determine whether the SCI includes the DMRS pattern indication information according to the first indication information or the second indication information.
  • the first indication information is the cyclic redundancy check bit CRC scrambled by the first identifier corresponding to the SCI
  • the second indication information is the CRC corresponding to the SCI. 2. Identify the scrambled CRC.
  • the aforementioned SCI includes third indication information
  • the third indication information is used to indicate the transmission type.
  • the processing unit is configured to determine whether the SCI includes the DMRS pattern indication information of the PSSCH according to the transmission type indicated by the third indication information.
  • the processing unit is further configured to determine that if the transmission type is broadcast or type 1 multicast, it is determined that DMRS pattern indication information of the PSSCH is not included in the SCI. Among them, the receiving end of the first type of multicast is unknown. Or, if the transmission type is unicast or type 2 multicast, it is determined that the SCI includes the DMRS pattern indication information. Among them, the receiving end of the above-mentioned second type of multicast is known.
  • FIG. 12 is a schematic diagram of another structure of a communication device provided by an embodiment of the present application.
  • the communication device includes a processor 1210, a data sending processor 1220, and a data receiving processor 1230.
  • the processing unit 1120 in the foregoing embodiment may be the processor 1210 in FIG. 12, and completes corresponding functions.
  • the transceiving unit 1210 in the foregoing embodiment may be the sending data processor 1220 and/or the receiving data processor 1230 in FIG. 12.
  • the channel encoder and the channel decoder are shown in FIG. 12, it can be understood that these modules do not constitute a restrictive description of this embodiment, and are merely illustrative.
  • FIG. 13 is a schematic diagram of another structure of a communication device according to an embodiment of the present application.
  • the communication device may be the first terminal device in the first embodiment or the first terminal device in the second embodiment, and the communication device may be used to implement the transmission of the DMRS pattern indication information realized by the first terminal device in the first embodiment or the second embodiment above Method
  • the communication device includes a processor 131, a memory 132, a transceiver 133 and a bus system 134.
  • the memory 131 includes but is not limited to RAM, ROM, EPROM or CD-ROM, and the memory 131 is used to store related instructions and data.
  • the memory 131 stores the following elements, executable modules or data structures, or their subsets, or their extended sets:
  • Operating instructions including various operating instructions, used to implement various operations.
  • Operating system Including various system programs, used to implement various basic services and process hardware-based tasks.
  • the transceiver 133 may be a communication module or a transceiver circuit. In the embodiment of the present application, the transceiver 133 is used to perform operations such as sending data or instruction information involved in the first embodiment or the second embodiment.
  • the processor 131 may be a controller, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA, or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the embodiments of the present application.
  • the processor 131 may also be a combination that implements computing functions, for example, it includes a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • bus system 134 may include a power bus, a control bus, and a status signal bus in addition to a data bus.
  • bus system 134 may include a power bus, a control bus, and a status signal bus in addition to a data bus.
  • various buses are marked as the bus system 134 in FIG. 13.
  • FIG. 13 is only schematically drawn.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capability.
  • the steps of the foregoing method embodiments can be completed by hardware integrated logic circuits in the processor or instructions in the form of software.
  • the above-mentioned processor can be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • Programming logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module can be located in a mature storage medium in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), and electrically available Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • static random access memory static random access memory
  • dynamic RAM dynamic RAM
  • DRAM dynamic random access memory
  • synchronous dynamic random access memory synchronous DRAM, SDRAM
  • double data rate synchronous dynamic random access memory double data rate SDRAM, DDR SDRAM
  • enhanced synchronous dynamic random access memory enhanced SDRAM, ESDRAM
  • synchronous connection dynamic random access memory serial DRAM, SLDRAM
  • direct rambus RAM direct rambus RAM
  • the embodiment of the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the method or step executed by the first terminal device in the first embodiment or the second embodiment is implemented.
  • the embodiments of the present application also provide a computer program product, which, when executed by a computer, implements the method or step executed by the first terminal device in the first embodiment or the second embodiment.
  • the embodiment of the present application also provides a communication device, and the communication device may be the first terminal device in the first embodiment or the second embodiment.
  • the communication device includes a processor and an interface.
  • the processor is used to execute the method or step executed by the terminal device in the first embodiment above.
  • the foregoing terminal device may be a chip, and the foregoing processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor When implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may be integrated in the processor, may be located outside the above-mentioned processor, and exist independently.
  • FIG. 14 is a schematic diagram of another structure of a communication device according to an embodiment of the present application.
  • the communication device may be the second terminal device in the first embodiment or the second terminal device described above, and the communication device may be used to implement the transmission of the DMRS pattern indication information implemented by the second terminal device in the first embodiment or the second embodiment above method.
  • the communication device includes a processor 141, a memory 142, a transceiver 143, and a bus system 144.
  • the memory 141 includes but is not limited to RAM, ROM, EPROM or CD-ROM, and the memory 141 is used to store related instructions and data.
  • the memory 141 stores the following elements, executable modules or data structures, or their subsets, or their extended sets:
  • Operating instructions including various operating instructions, used to implement various operations.
  • Operating system Including various system programs, used to implement various basic services and process hardware-based tasks.
  • FIG. 14 Only one memory is shown in FIG. 14. Of course, the memory can also be set to multiple as needed.
  • the transceiver 143 may be a communication module or a transceiver circuit. In the embodiment of the present application, the transceiver 143 is used to perform operations such as sending data or indicating information involved in the first embodiment or the second embodiment.
  • the processor 141 may be a controller, a CPU, a general-purpose processor, a DSP, an ASIC, an FPGA or other programmable logic devices, transistor logic devices, hardware components, or any combination thereof. It can implement or execute various exemplary logical blocks, modules, and circuits described in conjunction with the disclosure of the embodiments of the present application.
  • the processor 141 may also be a combination that implements computing functions, for example, a combination of one or more microprocessors, a combination of a DSP and a microprocessor, and so on.
  • bus system 144 the various components of the communication device are coupled together through a bus system 144, where the bus system 144 may include a power bus, a control bus, and a status signal bus in addition to a data bus.
  • bus system 144 may include a power bus, a control bus, and a status signal bus in addition to a data bus.
  • various buses are marked as the bus system 144 in FIG. 14.
  • FIG. 14 is only schematically drawn.
  • the embodiment of the present application also provides a computer-readable medium on which a computer program is stored, and when the computer program is executed by a computer, the method or step executed by the second terminal device in the first embodiment or the second embodiment is implemented.
  • the embodiments of the present application also provide a computer program product, which, when executed by a computer, implements the method or step executed by the second terminal device in the first embodiment or the second embodiment.
  • the embodiment of the present application also provides a communication device, and the communication device may be the second terminal device in the first embodiment or the second embodiment.
  • the communication device includes a processor and an interface.
  • the processor is used to execute the method or step executed by the terminal device in the first embodiment above.
  • the foregoing terminal device may be a chip, and the foregoing processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor When implemented by software, the processor may be a general-purpose processor, which is implemented by reading software codes stored in the memory, and the memory may be integrated in the processor, may be located outside the above-mentioned processor, and exist independently.
  • this application also provides a communication system, which includes the aforementioned one or more first terminal devices and one or more second terminal devices.
  • the above method embodiments it can be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it can be implemented in the form of a computer program product in whole or in part.
  • the above-mentioned computer program product includes one or more computer instructions.
  • the foregoing computer instructions are loaded and executed on a computer, the foregoing processes or functions according to the embodiments of the present application are generated in whole or in part.
  • the above-mentioned computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the above-mentioned computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the medium can be any usable medium that can be accessed by a computer or a data storage device such as a server or data center integrated with one or more usable media.
  • the above usable medium can be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), and an optical medium.
  • a high-density digital video disc (DVD) or a semiconductor medium (for example, a solid state disk (SSD), etc.).
  • system and “network” in the embodiments of the present application can often be used interchangeably.
  • the term “and/or” in this embodiment is only an association relationship that describes associated objects, indicating that there can be three types of relationships, for example, A and/or B, which can mean: A alone exists, and A and B exist at the same time. There are three cases of B alone.
  • the character "/" in this text generally indicates that the associated objects before and after are in an "or” relationship.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device described above is only illustrative, for example, the division of units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or integrated into another. A system or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may also be electrical, mechanical or other forms of connection.
  • the functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de transmission d'informations d'indication de motif DMRS et un appareil de communication, ceux-ci étant applicables à des scénarios, tels qu'un V2X, un Internet des véhicules, des véhicules connectés, des véhicules connectés intelligents et une conduite automatique. Le problème du gaspillage de ressources d'informations de commande de liaison latérale qui est provoqué par l'indication de répétition d'un motif DMRS peut ainsi être résolu. Le procédé comprend les étapes suivantes : un premier équipement terminal détermine, en fonction du nombre de motifs DMRS d'un canal partagé de liaison latérale physique (PSSCH) dans des informations de configuration de groupe de ressources, si des informations de commande de liaison latérale (SCI) comprennent des informations d'indication de motif DMRS ; et le premier équipement terminal envoie les SCI à un second équipement terminal. Au moyen des modes de réalisation de la présente invention, le gaspillage de ressources d'informations de commande de liaison latérale provoqué par l'indication de répétition d'un motif DMRS peut être évité, et le taux d'utilisation de ressources de communication peut être amélioré.
PCT/CN2019/109228 2019-09-29 2019-09-29 Procédé de transmission d'informations d'indication de motif dmrs et appareil de communication WO2021056579A1 (fr)

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CN201980035321.6A CN112889329A (zh) 2019-09-29 2019-09-29 一种dmrs样式指示信息的传输方法和通信装置
PCT/CN2019/109228 WO2021056579A1 (fr) 2019-09-29 2019-09-29 Procédé de transmission d'informations d'indication de motif dmrs et appareil de communication

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109644075A (zh) * 2016-08-24 2019-04-16 高通股份有限公司 在设备到设备通信中的解调参考信号序列选择

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109644075A (zh) * 2016-08-24 2019-04-16 高通股份有限公司 在设备到设备通信中的解调参考信号序列选择

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CATT: "Sidelink physical layer structure in NR V2X", 3GPP TSG RAN WG1 MEETING #97, R1-1906314, 17 May 2019 (2019-05-17), XP051708349 *
QUALCOMM INC.: "Considerations on Physical Layer aspects of NR V2X", 3GPP TSG RAN WG1 MEETING #97, R1-1907269, 17 May 2019 (2019-05-17), XP051709292 *

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