WO2021068202A1 - Procédé et appareil de communication - Google Patents

Procédé et appareil de communication Download PDF

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Publication number
WO2021068202A1
WO2021068202A1 PCT/CN2019/110627 CN2019110627W WO2021068202A1 WO 2021068202 A1 WO2021068202 A1 WO 2021068202A1 CN 2019110627 W CN2019110627 W CN 2019110627W WO 2021068202 A1 WO2021068202 A1 WO 2021068202A1
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Prior art keywords
dmrs
terminal device
indication information
communication method
communication
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PCT/CN2019/110627
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English (en)
Chinese (zh)
Inventor
朱莉
窦圣跃
罗泽宙
李立
杨育波
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华为技术有限公司
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Priority to CN201980100261.1A priority Critical patent/CN114391231B/zh
Priority to PCT/CN2019/110627 priority patent/WO2021068202A1/fr
Publication of WO2021068202A1 publication Critical patent/WO2021068202A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received

Definitions

  • This application relates to the field of communication, and more specifically, to a communication method and related devices.
  • Multi-user beamforming (MUBF) pairing allows multiple user equipment (UE) to be paired on the same time-frequency resource, thereby improving cell spectrum efficiency.
  • Ten transmission modes (TM) are defined in LTE, namely TM1-TM10.
  • MUBF pairing uses TM7-TM10.
  • the following situation may occur: in multiple time intervals (transmission time interval, TTI), there may be MUBF pairing in some TTIs, and there may be no MUBF pairing in some TTIs.
  • TTI transmission time interval
  • TM7 can only be used for scheduling in TTIs without MUBF pairing, so that single-user multi-stream spatial multiplexing gain will be lost.
  • RRC radio resource control
  • the present application provides a communication method and communication device that can optimize the TM used in MUBF pairing without reconfiguring the TM, that is, it can support both single-user multi-stream spatial multiplexing and MUBF.
  • the maximum number of layers to be paired is greater than 8.
  • a communication method including: first, a terminal device receives a first demodulation reference signal (DMRS) in a first transmission mode TM, and the first DMRS supports single-user multi-stream spatial multiplexing use. Then, the terminal device receives the first indication information from the network device. Finally, the terminal device receives the second demodulation reference signal DMRS under the first TM according to the first indication information, where the maximum number of MUBF pairing layers supported by the second DMRS is greater than 8.
  • DMRS demodulation reference signal
  • the terminal device receives the first DMRS under the first TM, which can realize single-user multi-stream spatial multiplexing.
  • the second DMRS can be received under the first TM.
  • the MUBF that the second DMRS can support The maximum number of layers to be paired is greater than 8. Therefore, the embodiment of the application does not need to reconfigure TM for the terminal device, which can realize that the maximum number of layers of MUBF pairing exceeds 8 (receive the second DMRS), and can support the scheduling of single-user multi-stream spatial multiplexing (receive the first DMRS) .
  • the maximum number of MUBF pairing layers supported by the second DMRS is 16, or the maximum number of MUBF pairing layers supported by the second DMRS is 48.
  • the first indication information is carried in one or more of the following fields in downlink control information (DCI): a redundancy version field and a reserved field. Therefore, the terminal device can obtain the above-mentioned first indication information through DCI.
  • DCI downlink control information
  • the first indication information is used to instruct the terminal device to use port 5 (port5) under the first TM to receive the second DMRS.
  • the first TM is TM8, and the first indication information is carried in a redundancy version field in the downlink control information DCI, for example, the RV field in DCI 2B.
  • the first TM is TM9 or TM10
  • the first indication information is carried in a reserved field in the downlink control information DCI, for example, a reserved field in DCI 2C/2D.
  • the method further includes: the terminal device sends first capability information to the network device, where the first capability information is used to indicate that the terminal device supports the first TM.
  • the terminal device can report its capabilities to the network device in advance, for example, to inform the network device that the terminal device is capable of supporting port5 under TM8/TM9/TM10.
  • the first indication information is carried in an RRC message, where the first indication information is used to indicate that the pseudo-random sequence corresponding to the second DMRS is generated according to the wireless network identity.
  • the terminal device receives the second DMRS sequence, it needs to consider the wireless network identity.
  • the pseudo-random sequence corresponding to the second DMRS satisfies the following formula:
  • C init represents the pseudo-random sequence
  • n s represents the time slot number
  • n SCID indicates the scrambling code
  • n RNTI indicates the wireless network identity of the terminal device.
  • the newly added n RNTI when generating the pseudo-random sequence can increase the randomness of the DMRS between users and help reduce the DMRS resource interference between users.
  • the communication method further includes: the terminal device sends second capability information to the network device, where the second capability information is used to indicate that the terminal device has the ability to demodulate and enhance the pseudo-random sequence.
  • a communication method including: first, a network device transmits a first DMRS in a first transmission mode TM, and the first DMRS supports single-user multi-stream spatial multiplexing. Then, the network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to receive the second demodulation reference signal DMRS under the first TM, where the MUBF supported by the second DMRS is paired with The maximum number of layers is greater than 8.
  • the network device sends the first indication information to the terminal device so that the terminal device is in the first TM
  • the network device sends the first indication information to the terminal device so that the terminal device is in the first TM
  • the maximum number of MUBF pairing layers supported by the second DMRS is 16, or the maximum number of MUBF pairing layers supported by the second DMRS is 48.
  • the first indication information is carried in any of the following fields in the downlink control information DCI: a redundancy version field and a reserved field. Therefore, the network device may send the above-mentioned first indication information to the terminal device through the DCI.
  • the first TM is TM8, and the first indication information is carried in a redundancy version field in the downlink control information DCI, for example, the RV field in DCI 2B.
  • the first TM is TM9 or TM10
  • the first indication information is carried in a reserved field in the downlink control information DCI, for example, a reserved field in DCI 2C/2D.
  • the communication method further includes: the network device receives first capability information from the terminal device, where the first capability information is used to indicate that the terminal device supports the first TM.
  • the network device can learn the first capability information of the terminal device, for example, know that the terminal device is capable of supporting port5 under TM8/TM9/TM10, that is, TM that supports single-user multi-stream spatial multiplexing.
  • the first indication information is carried in an RRC message, where the first indication information is used to indicate that the pseudo-random sequence corresponding to the second DMRS is generated according to the wireless network identity.
  • the network device may notify the terminal device that it needs to consider the wireless network identity when receiving the second DMRS sequence.
  • the pseudo-random sequence corresponding to the second DMRS satisfies the following formula:
  • C init represents the pseudo-random sequence
  • n s represents the time slot number
  • n SCID indicates the scrambling code
  • n RNTI indicates the wireless network identity of the terminal device.
  • the newly added n RNTI when generating the pseudo-random sequence can increase the randomness of the DMRS between users and help reduce the DMRS resource interference between users.
  • the communication method further includes: the network device receives second capability information from the terminal device, where the second capability information is used to indicate that the terminal device has the ability to demodulate and enhance the pseudo-random sequence.
  • a communication method including: a terminal device receives a DMRS, the DMRS supports single-user multi-stream spatial multiplexing, and the maximum number of MUBF pairing layers supported by the DMRS is greater than 8.
  • the terminal device demodulates the data according to the DMRS.
  • the DMRS received by the terminal device can not only enable the maximum number of supported MUBF pairing layers to be greater than 8, but also support the scheduling of single-user multi-stream spatial multiplexing, so that there is no need to switch the transmission mode TM or DMRS.
  • the communication method further includes: the terminal device receives first indication information, where the first indication information is used to indicate that the pseudo-random sequence corresponding to the DMRS is generated according to the wireless network identity.
  • the terminal device needs to consider the wireless network identity when demodulating the DMRS.
  • the wireless network identifier may be a radio network temporary identifier (RNTI) of the terminal device, such as a cell radio network temporary identifier (C-RNTI).
  • RNTI radio network temporary identifier
  • C-RNTI cell radio network temporary identifier
  • the first indication information is carried in an RRC message.
  • the pseudo-random sequence corresponding to the DMRS satisfies the following formula:
  • C init represents the pseudo-random sequence
  • n s represents the time slot number
  • n SCID indicates the scrambling code
  • n RNTI indicates the wireless network identity of the terminal device.
  • the communication method further includes: the terminal device sends second capability information to the network device, where the second capability information is used to indicate that the terminal device has the ability to demodulate and enhance the pseudo-random sequence.
  • the terminal device can report to the network device that it has the ability to demodulate and enhance the pseudo-random sequence, that is, it has the ability to demodulate the pseudo-random sequence generated based on the wireless network identity.
  • a communication method including: a network device determines a DMRS, the DMRS supports single-user multi-stream spatial multiplexing, and the maximum number of MUBF pairing layers supported by the DMRS is greater than 8.
  • the network device sends the DMRS to the terminal device.
  • the DMRS sent by the network device to the terminal device can not only enable the maximum number of supported MUBF pairing layers to be greater than 8, but also support the scheduling of single-user multi-stream spatial multiplexing, thereby eliminating the need to reconfigure the transmission mode TM for the terminal device.
  • the communication method further includes: the network device sending first indication information, where the first indication information is used to indicate that the pseudo-random sequence corresponding to the DMRS is generated according to the wireless network identity.
  • the network device notifies the terminal device that the pseudo-random sequence corresponding to the DMRS is generated according to the wireless network identity, so that the terminal device considers the wireless network identity when demodulating the DMRS.
  • the network device determines the DMRS, including:
  • the network equipment uses the following formula to generate the pseudo-random sequence corresponding to the DMRS:
  • C init represents the pseudo-random sequence
  • n s represents the time slot number
  • n SCID indicates the scrambling code
  • n RNTI indicates the wireless network identity of the terminal device.
  • the network device After the network device obtains the pseudo-random sequence corresponding to the DMRS through the above formula, it can use the calculation formula of the DMRS sequence to generate the DMRS sequence.
  • the communication method further includes: the network device receives and sends second capability information from the terminal device, where the second capability information is used to indicate that the terminal device has the ability to demodulate and enhance the pseudo-random sequence.
  • the network device can obtain that the terminal device reported by the terminal device has the ability to demodulate the enhanced pseudo-random sequence, that is, it can demodulate the pseudo-random sequence generated based on the wireless network identity.
  • a communication method which includes: first, a terminal device receives a second demodulation reference signal DMRS in a first transmission mode TM, and the maximum layer of multi-user multi-beamforming MUBF pairing supported by the second DMRS The number is greater than 8. Then, the terminal device receives the first indication information from the network device. Finally, the terminal device receives the first DMRS under the first TM according to the first indication information, where the first DMRS supports single-user multi-stream spatial multiplexing.
  • the second indication information includes a first field and a second field, where the first field is used to indicate two codewords, and the second field is used to indicate the DMRS resource of the terminal device.
  • the first TM is TM7; the second indication information is implemented through a newly added field in DCI 1.
  • a communication method including: first, a network device transmits a second DMRS in a first transmission mode TM, and the maximum number of layers of multi-user multi-beamforming MUBF pairing supported by the second DMRS is greater than 8. Then, the network device sends second instruction information to the terminal device, where the second instruction information is used to instruct the terminal device to receive the first DMRS under the first TM, where the first DMRS supports single-user multi-stream spatial multiplexing.
  • the second indication information includes a first field and a second field, where the first field is used to indicate two codewords, and the second field is used to indicate the DMRS resource of the terminal device.
  • the first TM is TM7; the second indication information is implemented through a newly added field in DCI 1.
  • a communication device in a seventh aspect, includes a module for executing the method in the foregoing first aspect or any possible implementation of the first aspect; or, including a module for executing the foregoing second aspect or the first aspect.
  • a communication device including a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or send signals from the processor
  • the processor is used to implement the foregoing first aspect or any possible implementation method of the first aspect through logic circuits or execution code instructions, or to implement the foregoing third aspect.
  • the method in any possible implementation manner of the aspect or the third aspect, or is used to implement the method in any possible implementation manner of the foregoing fifth aspect or the fifth aspect.
  • a communication device including a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor It is sent to other communication devices other than the communication device, and the processor is used to implement the foregoing second aspect or any possible implementation method of the second aspect through logic circuits or execution code instructions, or to implement the foregoing first aspect.
  • the method in any possible implementation manner of the fourth aspect or the fourth aspect, or is used to implement the method in any possible implementation manner of the aforementioned sixth aspect or the sixth aspect.
  • a computer-readable storage medium stores a computer program or instruction.
  • the computer program or instruction When the computer program or instruction is executed, the first aspect or any possibility of the first aspect is realized.
  • To implement the foregoing fourth aspect or any possible implementation method of the fourth aspect, or implement the foregoing fifth aspect or any possible implementation method of the fifth aspect, or implement the foregoing sixth aspect or first aspect The method in any possible implementation of the six aspects.
  • a computer program product containing instructions.
  • the method in any possible implementation manner of the first aspect or the first aspect is implemented, or the second aspect or the first aspect mentioned above is implemented.
  • the method in any possible implementation manner of the second aspect, or the method in any possible implementation manner of the foregoing third aspect or the third aspect, or the realization of any possible implementation manner of the foregoing fourth aspect or the fourth aspect is implemented.
  • a communication chip in which instructions are stored, which when running on a computer device, cause the communication chip to execute any one of the first to sixth aspects and any possible implementations thereof The method in the way.
  • a communication system which includes the communication device of the aforementioned eighth aspect and/or the communication device of the ninth aspect.
  • Fig. 1 is a schematic diagram of a system architecture to which an embodiment of the present application is applied;
  • Fig. 2 is a schematic interaction diagram of a communication method according to an embodiment of the present application.
  • Fig. 3 is a schematic interaction diagram of a communication method according to another embodiment of the present application.
  • FIG. 4 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • multiple can be understood as “at least two” or “two or more”; “multiple” can be understood as “at least two” or “two or more” .
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • LTE long-term evolution
  • FDD frequency division duplex
  • TDD LTE time division duplex
  • UMTS universal mobile telecommunication system
  • WiMAX global interconnected microwave Access (worldwide interoperability for microwave access, WiMAX) communication systems, future 5th generation (5G) systems or new radio (NR), etc.
  • FIG. 1 is a schematic diagram of the architecture of a communication system to which an embodiment of the present application may be applied.
  • the communication system includes a core network device 110, an access network device 120, and at least one terminal device (the terminal device 130 and the terminal device 140 in FIG. 1).
  • the terminal device is connected to the access network device in a wireless manner
  • the access network device is connected to the core network device in a wireless or wired manner.
  • the core network equipment and the access network equipment can be separate and different physical equipment, or the functions of the core network equipment and the logical functions of the access network equipment can be integrated on the same physical equipment, or they can be integrated on the same physical equipment.
  • the function of part of the core network equipment and the function of part of the access network equipment are introduced.
  • the terminal device can be a fixed location, or it can be movable.
  • Fig. 1 is only a schematic diagram.
  • the communication system may also include other network equipment, such as wireless relay equipment and wireless backhaul equipment, which are not shown in Fig. 1.
  • the embodiment of the present application does not limit the number of core network equipment, access network equipment, and terminal equipment included in the communication system.
  • Access network equipment is the access equipment that terminal equipment accesses to the communication system in a wireless manner. It can be radio access network (RAN) equipment, base station NodeB, evolved base station (evolved NodeB, eNB), Base station (gNB), transmission point in 5G communication system, base station in future communication system or access node in wireless fidelity (Wi-Fi) system, one or a group of base stations in 5G system (including Multiple antenna panels) Antenna panels, or, can also be network nodes that constitute a gNB or transmission point, such as a baseband unit (BBU), a centralized unit (CU), or a distributed unit (distributed unit). , DU) and so on.
  • RAN radio access network
  • BBU baseband unit
  • CU centralized unit
  • distributed unit distributed unit
  • gNB may include CU and DU.
  • the gNB may also include an active antenna unit (AAU).
  • AAU active antenna unit
  • CU realizes part of the functions of gNB;
  • DU realizes part of the functions of gNB.
  • the CU is responsible for processing non-real-time protocols and services to implement radio resource control (radio resource control, RRC) and packet data convergence protocol (packet data convergence protocol, PDCP) layer functions.
  • RRC radio resource control
  • PDCP packet data convergence protocol
  • the DU is responsible for processing physical layer protocols and real-time services to implement the functions of the radio link control (RLC) layer, media access control (MAC) layer, and physical (PHY) layer.
  • RLC radio link control
  • MAC media access control
  • PHY physical
  • AAU realizes some physical layer processing functions, radio frequency processing and related functions of active antennas. Since the information of the RRC layer will eventually become the information of the PHY layer, or be transformed from the information of the PHY layer, under this architecture, high-level signaling, such as RRC layer signaling, can also be considered to be sent by the DU , Or, sent by DU and AAU.
  • the network device may be a device that includes one or more of a CU node, a DU node, and an AAU node.
  • the CU may be used as a network device in an access network, or as a network device in a core network (core network, CN), which is not limited in this application.
  • the terminal device may also be called a terminal, user equipment (UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), and so on.
  • Terminal devices can be mobile phones, tablets, computers with wireless transceiver functions, virtual reality (VR) terminal devices, augmented reality (AR) terminal devices, industrial control (industrial control) Wireless terminals in ), wireless terminals in self-driving (self-driving), wireless terminals in remote medical surgery, wireless terminals in smart grid, and wireless terminals in transportation safety (transportation safety) Terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • Access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on the water; they can also be deployed on airborne aircraft, balloons, and satellites.
  • the embodiments of the present application do not limit the application scenarios of the access network device and the terminal device.
  • the embodiments of the present application can be applied to downlink signal transmission, can also be applied to uplink signal transmission, and can also be applied to device-to-device (D2D) signal transmission.
  • the sending device is an access network device, and the corresponding receiving device is a terminal device.
  • the sending device is a terminal device, and the corresponding receiving device is an access network device.
  • D2D signal transmission the sending device is a terminal device, and the corresponding receiving device is also a terminal device.
  • the communication between the access network equipment and the terminal equipment and between the terminal equipment and the terminal equipment can be through the licensed spectrum (licensed spectrum), or through the unlicensed spectrum (unlicensed spectrum), or through the licensed spectrum and the unlicensed spectrum at the same time Spectrum to communicate.
  • Communication between access network equipment and terminal equipment and between terminal equipment and terminal equipment can be through the frequency spectrum below 6 gigahertz (gigahertz, GHz), or through the frequency spectrum above 6G, and can also use the frequency below 6G at the same time
  • the frequency spectrum communicates with the frequency spectrum above 6G.
  • the embodiment of the present application does not limit the spectrum resource used between the access network device and the terminal device.
  • the terminal device or network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • the hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also referred to as main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, for example, Linux operating systems, Unix operating systems, Android operating systems, iOS operating systems or windows operating systems.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the application do not specifically limit the specific structure of the execution body of the method provided in the embodiments of the application, as long as the program that records the code of the method provided in the embodiments of the application can be executed according to the method provided in the embodiments of the application.
  • the method only needs to communicate.
  • the execution subject of the method provided in the embodiments of the present application may be a terminal device or a network device, or a functional module (such as a processor, a chip) that can call and execute the program in the terminal device or the network device. , Or chip system, etc.).
  • various aspects or features of the present application can be implemented as methods, devices, or products using standard programming and/or engineering techniques.
  • article of manufacture used in this application encompasses a computer program accessible from any computer-readable device, carrier, or medium.
  • computer-readable media may include, but are not limited to: magnetic storage devices (for example, hard disks, floppy disks, or tapes, etc.), optical disks (for example, compact discs (CD), digital versatile discs (DVD)) Etc.), smart cards and flash memory devices (for example, erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.).
  • various storage media described herein may represent one or more devices and/or other machine-readable media for storing information.
  • machine-readable medium may include, but is not limited to, wireless channels and various other media capable of storing, containing, and/or carrying instructions and/or data.
  • Multi-user beamforming (MUBF) pairing allows multiple UEs to use the same time-frequency resources, which can improve cell spectrum efficiency.
  • multiple UEs can be understood as MUBF paired UEs.
  • the base station generates orthogonal weights for multiple UEs according to the zero-forcing criterion according to the channel conditions of each UE.
  • the base station uses these orthogonal weights to weight the physical downlink shared channel (PDSCH) and DMRS symbols of each UE. After the weighted symbols are combined, they are sent out from the base station antenna port to achieve the same time frequency. The purpose of transmitting multiple UE data on the resource.
  • PDSCH physical downlink shared channel
  • DMRS symbols DMRS symbols
  • TM1-TM6 are based on cell-specific reference signal (cell-specific reference signal, CRS) demodulation
  • TM7-TM10 are based on DMRS demodulation.
  • CRS cell-specific reference signal
  • TM7-TM10 are based on DMRS demodulation.
  • the maximum number of multiplexing layers for TM9/TM10 is 8.
  • the Physical Downlink Control Channel (PDCCH) of TM8 uses the downlink control information (DCI) 2B format
  • DCI downlink control information
  • the PDCCH of TM9 uses the DCI 2C format
  • the PDCCH of TM10 uses the DCI 2D format.
  • DCI downlink control information
  • the DMRS resource of TM7 uses port 5.
  • the time-frequency resource mapping of port5 can refer to the description in the standard.
  • the DMRS resources of TM9/TM10 use ports 7 to 14.
  • the port uses orthogonal cover codes (OCC) to perform code division. For brevity, details are not described here.
  • an embodiment of the present application proposes a communication method that can realize that the MUBF pairing TTI can support more than 8 layers of pairing (that is, the maximum number of layers of the MUBF pairing 8) And, the single-user scheduled TTI can support single-user multi-stream scheduling, so there is no need to retransmit the RRC message to reconfigure the TM, and the TTI-level TM can be changed.
  • FIG. 2 is a schematic interaction diagram of a communication method 200 according to an embodiment of the present application.
  • the terminal device in FIG. 2 may be the terminal device in FIG. 1 (for example, the terminal device 130 or the terminal device 140), or may refer to a device in the terminal device (for example, a processor, a chip, or a chip system, etc.) .
  • the network device may be the access network device 120 in FIG. 1, or may refer to a device in the network device (for example, a processor, a chip, or a chip system, etc.).
  • the method 200 includes:
  • the network device sends the first DMRS in the first transmission mode TM.
  • the terminal device receives the first DMRS through the first TM.
  • the first DMRS supports single-user multi-stream spatial multiplexing.
  • the first TM can be TM8/TM9/TM10.
  • the first DMRS can be understood as an existing DMRS, that is, a signal sent through port 7-14.
  • the first DMRS received by the terminal device through the first TM supports single-user multi-stream spatial multiplexing.
  • the terminal device demodulates the first DMRS based on port7-14.
  • the single-user multi-stream spatial multiplexing can refer to the explanation in the standard protocol, for the sake of brevity, it will not be repeated here.
  • the network device sends first indication information to the terminal device, where the first indication information is used to instruct the terminal device to receive the second DMRS in the first transmission mode TM.
  • the terminal device receives the first indication information from the network device.
  • the maximum number of MUBF pairing layers supported by the second DMRS is greater than 8.
  • the network device can inform the terminal device to receive the second DMRS under the first TM through the first indication information.
  • the maximum number of MUBF pairing layers supported by the second DMRS is greater than 8.
  • the maximum number of layers of MUBF pairing supported by the second DMRS is 16, and for example, the maximum number of layers of MUBF pairing supported by the second DMRS is 48.
  • the network device sends the second DMRS.
  • the terminal device receives the second DMRS under the first TM according to the first indication information.
  • a terminal device that receives the first DMRS under the first TM, after receiving the first indication information, it receives the second DMRS under the first TM according to the first indication information, not only that the maximum number of MUBF pairing layers that can be supported is greater than 8 , Can also support the scheduling of single-user multi-stream spatial multiplexing, so as to realize the change of TTI-level TM mode.
  • the network device realizes that the terminal device receives the second DMRS under the first TM in the following manner: adding an indication for indicating port 5 resources in the DCI, or generating the second DMRS based on the wireless network identity 2. Pseudo-random sequence of DMRS. This will be described in detail below.
  • Manner 1 The network device adds first indication information to the DCI to indicate the port5 resource.
  • the first indication information is used to instruct the terminal device to use port 5 under the first TM to receive the second DMRS.
  • the first indication information is carried in one or more of the following fields in the DCI: a redundancy version field and a reserved field.
  • the first indication information can be carried in the redundancy version field, or in the reserved field, or can be carried in the redundancy version field and the reserved field, or in other reasonably available fields, which is not limited. .
  • the first TM is TM8, and the first indication information is carried in the redundancy version field in the downlink control information DCI.
  • the DCI sent by the network device uses the DCI 2B format.
  • the embodiment of the present application may use the "Redundancy version" field in the disabled transport block indication in DCI 2B to indicate port5. For example, as shown in Table 1 below, when the field "Redundancy version" of the disabled transport block in DCI 2B is equal to "10", it means that the DMRS resource uses port5. At this time, the two fields of "Scrambling identity"/"New data indicator" are invalid.
  • the first TM is TM9/TM10, and the first indication information is carried in a reserved field in the downlink control information DCI.
  • the DCI sent by the network device uses the DCI 2C format.
  • the DMRS resource can be indicated through the "Antenna port(s), scrambling identity and number of layers" field in the DCI 2C.
  • this embodiment of the application may use a reserved field in DCI 2C to indicate port5.
  • Table 5.3.3.1.5C-1 used by Release 13 and the protocol versions before Release 13 as an example.
  • Table 2 is compared to Table 5.3.3.1 used by Release 13 and the protocol versions before Release 13.
  • the difference of .5C-1 is: when the "Antenna port(s), scrambling identity and number of layers" field value is "7", it means that the DMRS resource of TM9 uses port5.
  • Table 5.3.3.1.5C-2 used by Release14 and later protocol versions as an example.
  • Table 3 is compared with Table 5.3.3.1 used by Release14 and later protocol versions.
  • the difference of 5C-2 is: when the "Antenna port(s), scrambling identity and number of layers" field value is "15", it means that the DMRS resource of TM9 uses port5.
  • the DCI sent by the network device uses the DCI 2D format.
  • the DMRS resource can be indicated through the "Antenna port(s), scrambling identity and number of layers" field in DCI 2D.
  • the embodiment of this application may use a reserved field in DCI 2D to indicate port5.
  • the processing method can refer to Table 2 and Table 3 given in TM9. For the sake of brevity, it will not be repeated here.
  • TM8/TM9/TM10 After the above-mentioned TM8/TM9/TM10 has newly added instructions on port5, it not only supports single-user multi-stream spatial multiplexing, but also supports a maximum number of layers of MUBF pairing greater than 8.
  • TM8/TM9/TM10 also has the function of TM7, so that there is no need to reconfigure the TM for the terminal device, and the function of TM8/TM9/TM10 can be realized as well as the function of TM7.
  • the method 200 further includes: S240.
  • the terminal device sends first capability information to the network device, where the first capability information is used to indicate that the terminal device supports the first TM.
  • the network device receives the first capability information. For example, before receiving the first indication information sent by the network device, the terminal device may first report the first capability information to the network device to inform the network device that the terminal device has the ability to support port5 under TM8/TM9/TM10.
  • the first capability information may be used to identify whether the terminal device supports a new DMRS resource (for example, port 5) under TM8/TM9/TM10.
  • the terminal device may not need to send the first capability information to the network device, but directly take effect in a certain protocol version.
  • a terminal device supporting the R16 protocol has the capability indicated by the first capability information by default; the network device also defaults that the terminal device has the capability indicated by the first capability information.
  • the network device can directly use the new DMRS resource to send the DMRS to the terminal device.
  • the first TM in mode 1, by adding an instruction to use port5 in the DCI, the first TM can support pairing of more than 8 layers.
  • single-user multi-stream spatial multiplexing gain can be obtained.
  • the peak rate of the first TM is 371 megabits per second (million bits per second, Mbps)
  • the peak rate of TM7 The rate is 47Mbps, compared with TM7, the peak rate gain is 7.89 times.
  • the following table 4 compares the gain of TM7 with the gain of TM8 under MUBF pairing. Among them, the indication of Port5 is added to the DCI 2B used by TM8.
  • TM7's DMRS resource port5 uses n RNTI to generate pseudo-random sequence.
  • n RNTI When the number of layers exceeds 8, it is still pseudo-random; but if it is TM9/ In TM10, when the number of layers exceeds 8, the pseudo-random sequence cannot guarantee randomization, which results in mutual interference of DRMS resources between users and degrades the performance of MUBF pairing. Therefore, the embodiment of the present application introduces the wireless network identity when generating the pseudo-random sequence of the DMRS under TM8/TM9/TM10.
  • the network device may send an RRC message to the terminal device, where the RRC message carries the first indication information.
  • the first indication information is used to indicate that the pseudo-random sequence corresponding to the second DMRS is generated according to the wireless network identity.
  • the terminal device receives the RRC message to obtain the first indication information in the RRC message. In this way, when the terminal device receives the second DMRS sequence, it needs to consider the wireless network identity.
  • RNTI can be recorded as n RNTI .
  • the sequence of the second DMRS satisfies the following formula (1):
  • r(m) represents the DMRS sequence; Indicates the total number of PDSCH RBs on the system bandwidth.
  • C(i) represents the enhanced pseudo-random sequence, that is, the pseudo-random sequence obtained after considering n RNTI .
  • the initialized pseudo-random sequence satisfies the following equation (2):
  • C init represents the initialized pseudo-random sequence
  • n s represents the time slot number
  • n SCID represents the scrambling code
  • n RNTI represents the wireless network identifier of the terminal device.
  • n SCID can refer to the existing agreement.
  • TM8 the value of n SCID is as shown in 3GPP 36.211 Table 6.10.3.1-1
  • TM9/TM10 the value of n SCID is as shown in 3GPP 36.212
  • Table 5.3.3.1.5C-1/Table 5.3.3.1 As shown in .5C-2, Table 5.3.3.1.5C-1 is applicable to R13 and earlier versions, and Table 5.3.3.1.5C-2 is applicable to R14 and later versions.
  • TM8/TM9 Represents the physical cell identity; under TM10, it can be configured by higher layers.
  • n RNTI is newly added in the embodiment of the present application.
  • the newly added n RNTI in formula (2) generates a pseudo-random sequence, which can increase the randomness of the DMRS between users and help reduce the DMRS resource interference between users.
  • the formula (2) is described by adding n RNTI as an example.
  • n RNTI can also be subtracted, or multiplied by n RNTI , or n RNTI is used as a power. There is no specific limitation on this .
  • the method 200 further includes: S250.
  • the terminal device sends second capability information to the network device, where the second capability information is used to indicate that the terminal device has the ability to demodulate and enhance the pseudo-random sequence.
  • the terminal device supports the use of the wireless network identifier to demodulate the DMRS sequence generated based on the wireless network identifier.
  • the network device receives the second capability information. It can be understood that regardless of whether the network device uses the above formula (2) to generate the enhanced pseudo-random sequence, the terminal device can report the second capability information to the network device.
  • the second capability information may be used to indicate whether the terminal device has the capability of demodulating the DMRS sequence of port 7-14 based on the RNTI.
  • the terminal device may not need to send the second capability information to the network device, but directly take effect in a certain protocol version.
  • a terminal device that supports the R16 protocol has the capability indicated by the second capability information by default, and the network device also defaults that the terminal device has the capability indicated by the second capability information.
  • the network device may directly send the second DMRS generated by using the wireless network identifier to the terminal device.
  • the network device uses the wireless network identifier (for example, n RNTI ) of the terminal device to generate the DMRS sequence during the MUBF pairing process, so that the number of MUBF pairing layers can exceed 8, that is, the pairing of more than 8 layers is supported.
  • n RNTI wireless network identifier
  • This application also provides a communication method, including: a network device determines a DMRS, the DMRS supports single-user multi-stream spatial multiplexing, and the maximum number of MUBF pairing layers supported by the DMRS is greater than 8; the terminal device decodes the DMRS Tune; send the DMRS to the terminal device. Correspondingly, the terminal device receives the DMRS, and demodulates the data according to the DMRS.
  • the DMRS received by the terminal device can not only enable the maximum number of supported MUBF pairing layers to be greater than 8, but also support single-user multi-stream spatial multiplexing scheduling, thereby eliminating the need to switch the transmission mode TM.
  • the method further includes: the network device sends the first indication information to the terminal device.
  • the terminal device receives the first indication information.
  • the first indication information is used to indicate that the pseudo-random sequence corresponding to the DMRS is generated according to the wireless network identity.
  • the terminal device needs to consider the wireless network identity when demodulating the DMRS.
  • the wireless network identifier is the RNTI of the terminal device.
  • the first indication information may be carried in a newly defined message or signaling, or may be carried in existing high-level signaling, which is not limited.
  • the first indication information is carried in an RRC message.
  • the network device when the network device generates the pseudo-random sequence corresponding to the DMRS, the following formula may be adopted:
  • C init represents the pseudo-random sequence
  • n s represents the time slot number
  • n SCID indicates the scrambling code
  • n RNTI indicates the wireless network identity of the terminal device.
  • the method further includes: the terminal device sends second capability information to the network device.
  • the network device receives the second capability information from the terminal device.
  • the second capability information is used to indicate that the terminal device has the capability of demodulating and enhancing the pseudo-random sequence.
  • the terminal device can report to the network device that it has the ability to demodulate and enhance the pseudo-random sequence, that is, it has the ability to demodulate the pseudo-random sequence generated based on the wireless network identity.
  • the second capability information please refer to the preceding text. For brevity, details are not repeated here.
  • TM7 uses DCI 1 to indicate PDSCH resources and supports MUBF pairing with more than 8 layers; but for unpaired TTIs, only a single stream can be scheduled.
  • this application also provides a communication method.
  • TM8/TM9/TM10 By adding the functions of TM8/TM9/TM10 to TM7, the effect similar to the previous method 200 can be achieved, that is, there is no need to re- With TM, the following functions can be realized: not only the maximum number of MUBF pairing layers that can be supported is greater than 8, but also the scheduling of single-user multi-stream spatial multiplexing, so as to realize the change of TTI-level TM mode.
  • this communication method does not need to reconfigure TM for the terminal device.
  • TM8/TM9/TM10 By adding the functions of TM8/TM9/TM10 to TM7, both the functions of TM8/TM9/TM10 and the functions of TM7 can be realized.
  • the difference between this communication method and the method 200 provided above is that the method 200 adds the TM7 function to TM8/TM9/TM10.
  • FIG. 3 shows a schematic interaction diagram of a communication method 300 according to another embodiment of the present application.
  • the terminal device in FIG. 3 may be the terminal device in FIG. 1 (for example, the terminal device 130 or the terminal device 140), or may refer to a device in the terminal device (for example, a processor, a chip, or a chip system, etc.) .
  • the network device may be the access network device 120 in FIG. 1, or may refer to a device in the network device (for example, a processor, a chip, or a chip system, etc.).
  • the method 300 includes:
  • the network device transmits a second DMRS in the first transmission mode TM, and the maximum number of layers of multi-user multi-beamforming MUBF pairing supported by the second DMRS is greater than 8.
  • the first TM may be TM7.
  • the second DMRS can be understood as an existing DMRS, that is, a signal sent through port5.
  • the maximum number of MUBF pairing layers supported by the second DMRS received by the terminal device through the first TM is greater than 8.
  • the terminal device demodulates the second DMRS based on port5.
  • "the maximum number of MUBF pairing layers is greater than 8" can refer to the explanation in the standard protocol, for the sake of brevity, it will not be repeated here.
  • the network device sends second indication information to the terminal device, where the second indication information is used to instruct the terminal device to receive the first DMRS under the first TM.
  • the terminal device receives the second indication information from the network device.
  • the first DMRS supports single-user multi-stream spatial multiplexing.
  • the network device can inform the terminal device to receive the first DMRS under the first TM through the second indication information.
  • the first DMRS supports single-user multi-stream spatial multiplexing.
  • the network device sends the first DMRS.
  • the terminal device receives the first DMRS under the first TM according to the second indication information.
  • a terminal device that receives the first DMRS under the first TM, after receiving the second indication information, it receives the first DMRS under the first TM according to the second indication information.
  • the maximum number of MUBF pairing layers that can be supported is greater than 8 , Can also support the scheduling of single-user multi-stream spatial multiplexing, so as to realize the change of TTI-level TM mode.
  • the network device realizes that the terminal device receives the first DMRS under the first TM in the following manner: adding a field for indicating dual codewords (ie, dual codeword indication field) in the DCI, and using In the field indicating the DMRS resource (ie, the DMRS resource indication field). This will be described in detail below.
  • the second indication information includes a first field and a second field, where the first field is used to indicate two codewords (or dual codewords, so that TM7 supports dual codewords), and the second field is used to indicate The DMRS resource of the terminal device. If the first TM is TM7, the network device implements the second indication information by adding a field to DCI 1.
  • a dual codeword indicator field (the first field) can be added to DCI 1 of TM7, so that TM7 supports dual codewords.
  • a DMRS resource indication field can be added to DCI 1 of TM7 to enable TM7 to support single-user multi-stream DMRS transmission.
  • the double codeword indication field may indicate the following:
  • the newly added DMRS resource indication field may indicate the following content:
  • the value range of the newly added DMRS resource indication field is the same as Table 5. As shown in Table 5 below:
  • Table 5 Antenna port(s), scrambling identity and number of layers indication
  • TM7 also has the function of supporting single-user multi-stream spatial multiplexing.
  • the method 300 further includes: S340.
  • the terminal device sends third capability information to the network device, where the third capability information is used to indicate that the terminal device supports the first TM.
  • the network device receives the first capability information.
  • the terminal device may first report the first capability information to the network device to inform the network device that the terminal device has the function of supporting single-user multi-stream spatial multiplexing under TM7
  • the terminal device supports the functions shown in Table 5 above.
  • the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic.
  • the various numerical numbers or serial numbers involved in the foregoing processes are only for easy distinction for description, and should not constitute any limitation on the implementation process of the embodiments of the present application.
  • the embodiments of the present application also provide corresponding devices, and the devices include corresponding modules for executing the foregoing embodiments.
  • the module can be software, hardware, or a combination of software and hardware. It can be understood that the technical features described in the method embodiments are also applicable to the following device embodiments.
  • Fig. 4 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • the communication device 1000 may include a transceiving unit 1100 and a processing unit 1200.
  • the communication device 1000 may correspond to the terminal device in the above method embodiment, for example, it may be a terminal device or a chip configured in the terminal device.
  • the communication device 1000 may correspond to the terminal device in the method 200 according to the embodiment of the present application, and the communication device 1000 may include a unit for executing the method executed by the terminal device in the method 200 in FIG. 2.
  • the units in the communication device 1000 and the other operations or functions described above are respectively intended to implement the corresponding process of the terminal device in the method 200 in FIG. 2.
  • the transceiving unit 1100 and the processing unit 1200 may be respectively used for:
  • the transceiver unit 1100 is configured to receive a first demodulation reference signal DMRS through a first transmission mode TM, the first DMRS supports single-user multi-stream spatial multiplexing; and receive first indication information from a network device.
  • the processing unit 1200 is configured to call the transceiver unit 1100 to receive the second demodulation reference signal DMRS under the first TM according to the first indication information, where the maximum number of MUBF pairing layers supported by the second DMRS is greater than 8.
  • the first indication information is carried in one or more of the following fields in the downlink control information DCI: a redundancy version field and a reserved field.
  • the first TM is TM8, and the first indication information is carried in a redundancy version field in the downlink control information DCI.
  • the first TM is TM9 or TM10, and the first indication information is carried in a reserved field in the downlink control information DCI.
  • the transceiver unit 1100 is further configured to send first capability information to the network device, where the first capability information is used to indicate that the terminal device supports the first TM.
  • the first indication information is carried in an RRC message, where the first indication information is used to indicate that the pseudo-random sequence corresponding to the second DMRS is generated according to the wireless network identity.
  • the pseudo-random sequence corresponding to the second DMRS satisfies the following formula:
  • C init represents the pseudo-random sequence
  • n s represents the time slot number
  • n SCID indicates the scrambling code
  • n RNTI indicates the wireless network identity of the terminal device.
  • the transceiving unit 1100 is further configured to send second capability information to the network device, where the second capability information is used to indicate that the terminal device has the ability to demodulate and enhance the pseudo-random sequence.
  • the transceiver unit 1100 and the processing unit 1200 may be used to:
  • the transceiver unit 1100 is configured to receive the second demodulation reference signal DMRS in the first transmission mode TM, and the maximum number of layers of multi-user multi-beamforming MUBF pairing supported by the second DMRS is greater than 8; and is also used to receive from network equipment The first instruction information.
  • the processing unit 1200 is configured to receive the first DMRS under the first TM according to the first indication information, where the first DMRS supports single-user multi-stream spatial multiplexing.
  • the second indication information includes a first field and a second field, where the first field is used to indicate two codewords, and the second field is used to indicate the DMRS resource of the terminal device.
  • the first TM is TM7; the second indication information is implemented through a newly added field in DCI 1.
  • the transceiver unit 1100 in the communication device 1000 may correspond to the transceiver 2020 in the terminal device 2000 shown in FIG. 5, and the processing unit 1200 in the communication device 1000 may It corresponds to the processor 2010 in the terminal device 2000 shown in FIG. 5.
  • the transceiver unit 1200 in the communication device 1000 may be an input/output interface.
  • the communication device 1000 may correspond to the network device in the above method embodiment, for example, it may be a network device or a chip configured in the network device.
  • the communication device 1000 may correspond to a network device in the method 200 according to an embodiment of the present application, and the communication device 1000 may include a unit for executing the method executed by the network device in the method 200 in FIG. 2.
  • each unit in the communication device 1000 and other operations or functions described above are used to implement the corresponding process of the network device in the method 200 in FIG. 2.
  • the transceiver unit 1100 may be used for:
  • the transceiver unit 1100 is configured to send a first DMRS in a first transmission mode, and the first DMRS supports single-user multi-stream spatial multiplexing.
  • the transceiving unit 1100 is further configured to indicate first information to the terminal device, and the first instruction information is used to instruct the terminal device to receive the second demodulation reference signal DMRS in the first transmission mode TM, where the second DMRS supports The maximum number of layers of MUBF pairing is greater than 8.
  • the first indication information is carried in one or more of the following fields in the downlink control information DCI: a redundancy version field and a reserved field.
  • the first TM is TM8, and the first indication information is carried in a redundancy version field in the downlink control information DCI.
  • the first TM is TM9 or TM10, and the first indication information is carried in a reserved field in the downlink control information DCI.
  • the transceiving unit 1100 is further configured to receive first capability information from the terminal device, where the first capability information is used to indicate that the terminal device supports the first TM.
  • the first indication information is carried in an RRC message, where the first indication information is used to indicate that the pseudo-random sequence corresponding to the second DMRS is generated according to the wireless network identity.
  • the pseudo-random sequence corresponding to the second DMRS satisfies the following formula:
  • C init represents the pseudo-random sequence
  • n s represents the time slot number
  • n SCID indicates the scrambling code
  • n RNTI indicates the wireless network identity of the terminal device.
  • the transceiving unit 1100 is further configured to receive second capability information from the terminal device, where the second capability information is used to indicate that the terminal device has the ability to demodulate and enhance the pseudo-random sequence.
  • the transceiver unit 1100 may be used for:
  • the transceiver unit 1100 is configured to send a second DMRS in the first transmission mode TM, and the maximum number of layers of multi-user multi-beamforming MUBF pairing supported by the second DMRS is greater than 8; it is also configured to send second indication information to the terminal device The second indication information is used to instruct the terminal device to receive the first DMRS under the first TM, where the first DMRS supports single-user multi-stream spatial multiplexing.
  • the second indication information includes a first field and a second field, where the first field is used to indicate two codewords, and the second field is used to indicate the DMRS resource of the terminal device.
  • the first TM is TM7; the second indication information is implemented through a newly added field in DCI 1.
  • the transceiver unit 1100 in the communication device 1000 may correspond to the transceiver 2020 in the network device 2000 shown in FIG. 6, and the processing unit 1200 in the communication device 1000 may It corresponds to the processor 2010 in the network device 2000 shown in FIG. 6.
  • the transceiver unit 1200 in the communication device 1000 may be an input/output interface.
  • FIG. 5 is a schematic structural diagram of a terminal device 2000 provided by an embodiment of the present application.
  • the terminal device 2000 can be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the foregoing method embodiment.
  • the terminal device 2000 includes a processor 2010 and a transceiver 2020.
  • the terminal device 2000 further includes a memory 2030.
  • the processor 2010, the transceiver 2002, and the memory 2030 can communicate with each other through internal connection paths to transfer control or data signals.
  • the memory 2030 is used to store computer programs, and the processor 2010 is used to call and transfer from the memory 2030. Run the computer program to control the transceiver 2020 to send and receive signals.
  • the terminal device 2000 may further include an antenna 2040 for transmitting the uplink data or uplink control signaling output by the transceiver 2020 through a wireless signal.
  • the aforementioned processor 2010 and the memory 2030 can be combined into a processing device, and the processor 2010 is configured to execute the program code stored in the memory 2030 to realize the aforementioned functions.
  • the memory 2030 may also be integrated in the processor 2010 or independent of the processor 2010.
  • the processor 2010 may correspond to the processing unit in FIG. 4.
  • the above transceiver 2020 may correspond to the communication unit in FIG. 4, and may also be referred to as a transceiver unit.
  • the transceiver 2020 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.
  • the terminal device 2000 shown in FIG. 5 can implement various processes involving the terminal device in the method embodiment shown in FIG. 2 or FIG. 3.
  • the operation or function of each module in the terminal device 2000 is to implement the corresponding process in the foregoing method embodiment.
  • the above-mentioned processor 2010 can be used to execute the actions described in the previous method embodiments implemented by the terminal device, and the transceiver 2020 can be used to execute the terminal device described in the previous method embodiments to send to or receive from the network device. action.
  • the transceiver 2020 can be used to execute the terminal device described in the previous method embodiments to send to or receive from the network device. action.
  • the aforementioned terminal device 2000 may further include a power supply 2050 for providing power to various devices or circuits in the terminal device.
  • the terminal device 2000 may also include one or more of an input unit 2060, a display unit 2070, an audio circuit 2080, a camera 2090, and a sensor 2100.
  • the audio circuit It may also include a speaker 2082, a microphone 2084, and so on.
  • Fig. 6 is a schematic structural diagram of a network device provided by an embodiment of the present application, and may be, for example, a schematic structural diagram of a base station.
  • the base station 3000 can be applied to the system shown in FIG. 1 to perform the functions of the network equipment in the foregoing method embodiment.
  • the base station 3000 may include one or more radio frequency units, such as a remote radio unit (RRU) 3100 and one or more baseband units (BBU) (also known as distributed unit (DU) )) 3200.
  • RRU 3100 may be referred to as a transceiving unit or a communication unit, and corresponds to the transceiving unit 1100 in FIG. 4.
  • the transceiver unit 3100 may also be called a transceiver, a transceiver circuit, or a transceiver, etc., and it may include at least one antenna 3101 and a radio frequency unit 3102.
  • the transceiver unit 3100 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit).
  • the RRU 3100 part is mainly used for receiving and sending radio frequency signals and converting radio frequency signals and baseband signals.
  • the 3200 part of the BBU is mainly used for baseband processing, control of the base station, and so on.
  • the RRU 3100 and the BBU 3200 may be physically set together, or may be physically separated, that is, a distributed base station.
  • the BBU 3200 is the control center of the base station, and may also be called a processing unit, which may correspond to the processing unit 1200 in FIG. 4, and is mainly used to complete baseband processing functions, such as channel coding, multiplexing, modulation, and spreading.
  • the BBU processing unit
  • the BBU may be used to control the base station to execute the operation procedure of the network device in the foregoing method embodiment, for example, to generate the configuration information reported by the CSI.
  • the BBU 3200 may be composed of one or more single boards, and multiple single boards may jointly support a radio access network (such as an LTE network) of a single access standard, or support different access standards. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 3200 also includes a memory 3201 and a processor 3202.
  • the memory 3201 is used to store necessary instructions and data.
  • the processor 3202 is configured to control the base station to perform necessary actions, for example, to control the base station to execute the operation procedure of the network device in the foregoing method embodiment.
  • the memory 3201 and the processor 3202 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It can also be that multiple boards share the same memory and processor. In addition, necessary circuits can be provided on each board.
  • the base station 3000 shown in FIG. 6 can implement various processes involving network devices in the foregoing method embodiments.
  • the operation or function of each module in the base station 3000 is to implement the corresponding process in the foregoing method embodiment.
  • the above-mentioned BBU 3200 can be used to perform the actions described in the previous method embodiments implemented by the network device, and the RRU 3100 can be used to perform the actions described in the previous method embodiments that the network device sends to or receives from the terminal device.
  • the RRU 3100 can be used to perform the actions described in the previous method embodiments that the network device sends to or receives from the terminal device.
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on a computer, the computer executes the embodiment shown in FIG. 2 The method on the side of the terminal device.
  • the present application also provides a computer-readable medium that stores program code, and when the program code runs on a computer, the computer executes the steps shown in FIG. 2 or FIG. 3 The method on the network device side in the embodiment is shown.
  • the present application also provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.
  • An embodiment of the present application also provides a processing device, including a processor and an interface; the processor is configured to execute the communication method in any of the foregoing method embodiments.
  • the network equipment in each of the above-mentioned device embodiments corresponds completely to the network equipment or terminal equipment in the terminal equipment and method embodiments, and the corresponding modules or units execute the corresponding steps.
  • the communication unit executes the receiving or the terminal equipment in the method embodiments.
  • the processing unit executes the functions of specific units, refer to the corresponding method embodiments. Among them, there may be one or more processors.
  • 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 may be a general-purpose processor, a digital signal processor (digital signal processor, DSP), an application specific integrated circuit (ASIC), a field programmable gate array (field programmable gate array, FPGA) or other Programming logic devices, discrete gates or transistor logic devices, discrete hardware components can also be system on chip (SoC), central processor unit (CPU), or network processor (network processor).
  • SoC system on chip
  • CPU central processor unit
  • network processor network processor
  • processor can also be a digital signal processing circuit (digital signal processor, DSP), can also be a microcontroller (microcontroller unit, MCU), can also be a programmable controller (programmable logic device, PLD) or other Integrated chip.
  • DSP digital signal processor
  • MCU microcontroller unit
  • PLD programmable controller
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application can be implemented or executed.
  • 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 processing unit used to execute these technologies at a communication device can be implemented in one or more general-purpose processors, DSPs, digital signal processing devices, ASICs, Programmable logic device, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware component, or any combination of the above.
  • the general-purpose processor may be a microprocessor.
  • the general-purpose processor may also be any traditional processor, controller, microcontroller, or state machine.
  • the processor can also be implemented by a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration. achieve.
  • 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 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 function of any of the foregoing method embodiments is realized.
  • This application also provides a computer program product, which, when executed by a computer, realizes the functions of any of the foregoing method embodiments.
  • the present application also provides a system, which includes the aforementioned one or more terminal devices and one or more network devices.
  • the computer may 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 computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available 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 available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, and a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disk, SSD)) etc.
  • system and "network” in this article are often used interchangeably in this article.
  • the term “and/or” in this article is only an association relationship that describes associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, exist alone In the three cases of B, A can be singular or plural, and B can be singular or plural.
  • the character "/" generally indicates that the associated objects before and after are in an "or” relationship.
  • At least one of! or "at least one of" as used herein means all or any combination of the listed items, for example, "at least one of A, B and C", It can mean: A alone exists, B alone exists, C exists alone, A and B exist at the same time, B and C exist at the same time, and there are six cases of A, B and C at the same time, where A can be singular or plural, and B can be Singular or plural, C can be singular or plural.
  • B corresponding to A means that B is associated with A, and B can be determined according to A.
  • determining B based on A does not mean that B is determined only based on A, and B can also be determined based on A and/or other information.
  • the corresponding relationships shown in the tables in this application can be configured or pre-defined.
  • the value of the information in each table is only an example, and can be configured to other values, which is not limited in this application.
  • the corresponding relationship shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, such as splitting, merging, and so on.
  • the names of the parameters shown in the titles in the above tables may also adopt other names that can be understood by the communication device, and the values or expressions of the parameters may also be other values or expressions that can be understood by the communication device.
  • other data structures can also be used, such as arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables, or hash tables. Wait.
  • the "pre-defined” in the embodiments of the present application can be understood as definition, pre-defined, stored, pre-stored, pre-negotiation, pre-configured, cured, or pre-fired.
  • the configuration in the embodiments of this application can be understood as being notified through RRC signaling, MAC signaling, and physical layer information, where the physical layer information can be transmitted through PDCCH or PDSCH.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another 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 be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various 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 function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of the present application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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

Abstract

La présente demande concerne un procédé et un appareil d'émission de signal, qui peuvent obtenir, sans reconfigurer un mode d'émission (TM) pour un dispositif terminal, les fonctions suivantes : la prise en charge de la planification d'un multiplexage spatial multi-flux mono-utilisateur, et le nombre maximal de couches d'appariements MUBF pris en charge étant supérieur à 8. Le procédé comprend : un dispositif terminal recevant un premier signal de référence de démodulation (DMRS) dans un premier TM, le premier DMRS prenant en charge un multiplexage spatial multi-flux mono-utilisateur ; le dispositif terminal recevant les premières informations d'indication d'un dispositif de réseau, et, selon les premières informations d'indication, recevant un second DMRS dans le premier TM, le nombre maximal de couches d'appariements MUBF pris en charge par le second DMRS étant supérieur à 8.
PCT/CN2019/110627 2019-10-11 2019-10-11 Procédé et appareil de communication WO2021068202A1 (fr)

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PCT/CN2019/110627 WO2021068202A1 (fr) 2019-10-11 2019-10-11 Procédé et appareil de communication

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