WO2020020354A1 - 接收和发送数据的方法以及通信装置 - Google Patents

接收和发送数据的方法以及通信装置 Download PDF

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Publication number
WO2020020354A1
WO2020020354A1 PCT/CN2019/097934 CN2019097934W WO2020020354A1 WO 2020020354 A1 WO2020020354 A1 WO 2020020354A1 CN 2019097934 W CN2019097934 W CN 2019097934W WO 2020020354 A1 WO2020020354 A1 WO 2020020354A1
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Prior art keywords
transmission scheme
dmrs sequence
sequence
data
scid
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PCT/CN2019/097934
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English (en)
French (fr)
Inventor
吴晔
毕晓艳
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华为技术有限公司
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Publication of WO2020020354A1 publication Critical patent/WO2020020354A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present application relates to the field of wireless communication, and more particularly, to a method of receiving and transmitting data and a communication device.
  • multi-user multi-input multi-output can support network devices and multiple terminal devices to transmit different data using the same time-frequency resources.
  • the terminal devices may interfere with each other.
  • the terminal equipment in this cell may be interfered by the transmission of the terminal equipment in the neighboring cell, and the terminal equipment in the same cell may also interfere with each other.
  • the terminal equipment needs to perform interference estimation.
  • the present application provides a method for receiving and sending data and a communication device, so as to reduce the complexity of demodulation.
  • a method for receiving data includes: receiving a demodulation reference signal (DMRS) sequence and data, the DMRS sequence is related to a data transmission scheme; and demodulating the data based on the DMRS sequence to obtain an estimated value of the data.
  • DMRS demodulation reference signal
  • the method provided in the first aspect may be executed by a terminal device, or may be executed by a chip configured in the terminal device, which is not limited in this application.
  • the terminal device determines the DMRS sequence, it can determine the data transmission scheme according to the correspondence between the DMRS sequence and the transmission scheme, thereby facilitating demodulation of the data.
  • the DMRS sequence (for example, recorded as the first DMRS sequence) received by the terminal device and sent to itself corresponds to the transmission scheme of data (for example, recorded as the first data), and the interference DMRS sequence (for example, recorded as The second DMRS sequence) and the data (such as the second data) transmission scheme also correspond.
  • the terminal device can generate a second DMRS sequence based on the corresponding relationship between the DMRS sequence and the transmission scheme, based on the hypothetical transmission scheme, and correlate it with the received signal to determine whether it is interfered.
  • the transmission scheme of the second data is further determined. Therefore, it is convenient for the terminal device to perform interference estimation based on the second data transmission scheme and the second DMRS sequence, and it is convenient to demodulate the data.
  • the terminal device cannot determine the transmission scheme of the second data in advance, it needs to traverse various possible transmission schemes to perform blind detection, and repeatedly try to demodulate data based on different transmission schemes, and the first data cannot be completed until the demodulation is successful. Demodulation of data. Assuming that there are N transmission schemes, the terminal device may have to repeatedly try N data demodulations to finally recover the first data, and the amount of calculation is very large.
  • the terminal device can determine the transmission scheme of the second data in advance, it can directly perform interference estimation based on the transmission scheme of the second data and the second DMRS sequence, and then based on the interference noise covariance matrix obtained from the first DMRS sequence and the interference estimation.
  • the first data is demodulated, which can greatly reduce the complexity of the interference estimation of the terminal equipment and reduce the complexity of the demodulation.
  • a scrambling code identifier SCID and a sequence identifier for generating an initial value of a DMRS sequence At least one combination of the corresponding to at least one transmission scheme.
  • the corresponding relationship may be globally configured, or may be configured at a cell level, or may be configured at a user equipment (UE) group level, or may be configured at a UE level, which is not limited in this application.
  • the correspondence relationship may be predefined, such as a protocol definition, or may be configured by a network device. This application does not limit this.
  • the method further includes: receiving first indication information, where the first indication information is used to indicate a first mapping relationship, and the first mapping relationship includes any one of : At least one scrambling code identifier n SCID corresponding to at least one transmission scheme; or at least one sequence identifier Correspondence to at least one transmission scheme; or scrambling code identifier SCID and sequence identifier A correspondence between at least one combination of at least one transmission scheme and.
  • a scrambling code identifier SCID and a sequence identifier for generating a DMRS sequence may be used. Called a set of parameters.
  • the parameter set corresponds to the transmission scheme.
  • the sequence identifier Correlation while scrambler ID n SCID and sequence ID can be pre-configured through an existing radio resource control (RRC) message. Therefore, when the scramble code identifier n SCID and sequence identifier When one of them corresponds to a transmission scheme, the other also corresponds to a transmission scheme.
  • RRC radio resource control
  • the method further includes: receiving second instruction information, where the second instruction information is used to indicate a scrambling code identifier n SCID and / Or sequence identifier
  • the network device may no longer need to send a separate signaling to indicate the data transmission scheme, while indicating the parameters for generating the initial value of the DMRS sequence, it has implicitly indicated the data transmission scheme, which can save Signaling overhead.
  • the method further includes: the terminal device determines a data transmission scheme according to the second instruction information.
  • the terminal device may directly determine the data transmission scheme according to the parameter used to generate the initial value of the DMRS sequence and the corresponding relationship between the at least one parameter set and the at least one transmission scheme indicated by the second instruction information.
  • At least one generation formula used to generate an initial value of the DMRS sequence corresponds to at least one transmission scheme.
  • the corresponding relationship may be globally configured, cell-level configured, UE-group-level configured, or UE-level configured, which is not limited in this application.
  • the correspondence relationship may be predefined, such as a protocol definition, or may be configured by a network device. This application does not limit this.
  • the method further includes: receiving third instruction information, where the third instruction information is used to indicate a generating formula of an initial value of the DMRS sequence.
  • the network device may no longer need to send separate signaling to indicate the data transmission scheme. While indicating the generation formula used to generate the initial value of the DMRS sequence, it has implicitly indicated the data transmission scheme, so that it can Save signaling overhead.
  • the method further includes: determining a data transmission scheme based on the third instruction information.
  • the terminal device may directly determine the data transmission scheme according to the parameter for generating the DMRS sequence indicated by the third instruction information and the correspondence between the at least one generation formula and the at least one transmission scheme.
  • a method for sending data includes: generating a DMRS sequence, the DMRS sequence being related to a data transmission scheme; and transmitting the DMRS sequence and data.
  • the method provided in the second aspect may be executed by a network device, or may be executed by a chip configured in the network device, which is not limited in this application.
  • the network device may generate a DMRS sequence corresponding to the data transmission scheme according to the correspondence between the DMRS sequence and the data transmission scheme.
  • the terminal device determines the DMRS sequence, it can determine the data transmission scheme according to the correspondence between the DMRS sequence and the transmission scheme, thereby facilitating demodulation of the data.
  • the DMRS sequence (for example, recorded as the first DMRS sequence) received by the terminal device and sent to itself corresponds to the transmission scheme of data (for example, recorded as the first data), and the interference DMRS sequence (for example, recorded as The second DMRS sequence) and the data (such as the second data) transmission scheme also correspond. Therefore, the terminal device can generate a second DMRS sequence based on the corresponding relationship between the DMRS sequence and the transmission scheme, based on the hypothetical transmission scheme, and correlate it with the received signal to determine whether it is interfered. In the case, the transmission scheme of the second data is further determined. Therefore, it is convenient for the terminal device to perform interference estimation based on the second data transmission scheme and the second DMRS sequence, and it is convenient to demodulate the data.
  • the terminal device cannot determine the transmission scheme of the second data in advance, it needs to traverse various possible transmission schemes to perform blind detection, and repeatedly try to demodulate data based on different transmission schemes, and the first data cannot be completed until the demodulation is successful. Demodulation of data. Assuming that there are N transmission schemes, the terminal device may have to repeatedly try N data demodulations to finally recover the first data, and the amount of calculation is very large.
  • the terminal device can determine the transmission scheme of the second data in advance, it can directly perform interference estimation based on the transmission scheme of the second data and the second DMRS sequence, and then based on the interference noise covariance matrix obtained from the first DMRS sequence and the interference estimation.
  • the first data is demodulated, which can greatly reduce the complexity of the interference estimation of the terminal equipment and reduce the complexity of the demodulation.
  • a scrambling code identifier SCID and a sequence identifier for generating an initial value of the DMRS sequence At least one combination of the corresponding to at least one transmission scheme.
  • the corresponding relationship may be globally configured, cell-level configured, UE-group-level configured, or UE-level configured, which is not limited in this application.
  • the correspondence relationship may be predefined, such as a protocol definition, or may be configured by a network device. This application does not limit this.
  • the method further includes: sending first indication information, where the first indication information is used to indicate a first mapping relationship, where the first mapping relationship includes any of the following One item: the correspondence between at least one scrambling code identifier n SCID and at least one transmission scheme; or at least one sequence identifier Correspondence to at least one transmission scheme; or scrambling code identifier SCID and sequence identifier A correspondence between at least one combination of at least one transmission scheme and.
  • a scrambling code identifier SCID and a sequence identifier for generating a DMRS sequence may be used. Called a set of parameters.
  • the parameter set corresponds to the transmission scheme.
  • the sequence identifier Correlation while scrambler ID n SCID and sequence ID can be pre-configured through an existing radio resource control (RRC) message. Therefore, when the scramble code identifier n SCID and sequence identifier When one of them corresponds to a transmission scheme, the other also corresponds to a transmission scheme.
  • RRC radio resource control
  • the network device generating the DMRS sequence includes: the network device determines a parameter set for generating the DMRS sequence according to a correspondence between at least one parameter set and at least one transmission scheme, and generates a DMRS sequence based on the parameter set.
  • the method further includes: sending second instruction information, where the second instruction information is used to indicate a scrambling code identifier n SCID and / Or sequence identifier
  • the network device may no longer need to send a separate signaling to indicate the data transmission scheme, while indicating the parameters for generating the initial value of the DMRS sequence, it has implicitly indicated the data transmission scheme, which can save Signaling overhead.
  • At least one generation formula used to generate an initial value of the DMRS sequence corresponds to at least one transmission scheme.
  • the corresponding relationship may be globally configured, cell-level configured, UE-group-level configured, or UE-level configured, which is not limited in this application.
  • the correspondence relationship may be predefined, such as a protocol definition, or may be configured by a network device. This application does not limit this.
  • the network device generating the DMRS sequence includes: the network device determines a generation formula for generating the DMRS sequence according to a correspondence between at least one generation formula and at least one transmission scheme, and generates a DMRS sequence based on the generation formula.
  • the method further includes: sending third instruction information, where the third instruction information is used to indicate a generating formula of an initial value of the DMRS sequence.
  • the network device may no longer need to send separate signaling to indicate the data transmission scheme. While indicating the generation formula used to generate the initial value of the DMRS sequence, it has implicitly indicated the data transmission scheme, so that it can Save signaling overhead.
  • a communication device including each module or unit for performing the method in the first aspect or any possible implementation manner of the first aspect.
  • a communication device including a processor.
  • the processor is coupled to the memory, and can be used to execute instructions in the memory to implement the foregoing first aspect or a method in any possible implementation manner of the first aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication device is a terminal device.
  • the communication interface may be a transceiver, or an input / output interface.
  • the communication device is a chip configured in a terminal device.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a communication device including each module or unit for performing the method in the second aspect or any one of the possible implementation manners of the second aspect.
  • a communication device including a processor.
  • the processor is coupled to the memory, and can be used to execute instructions in the memory to implement the foregoing second aspect or the method in any possible implementation manner of the second aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication device is a network device.
  • the communication interface may be a transceiver, or an input / output interface.
  • the communication device is a chip configured in a network device.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor executes the first aspect or the second aspect and any possible implementation manner of the first aspect or the second aspect Method.
  • the processor may be a chip
  • the input circuit may be an input pin
  • the output circuit may be an output pin
  • the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • An input signal received by the input circuit may be received and input by, for example, but not limited to, a receiver
  • a signal output by the output circuit may be, for example, but not limited to, output to a transmitter and transmitted by the transmitter
  • the circuits may be the same circuit, which are used as input circuits and output circuits respectively at different times.
  • the embodiments of the present application do not limit specific implementations of the processor and various circuits.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through a receiver and transmit signals through a transmitter to execute the first aspect or the second aspect and any possible implementation manner of the first aspect or the second aspect Methods.
  • processors there are one or more processors, and one or more memories.
  • the memory may be integrated with the processor, or the memory is separately provided from the processor.
  • the memory may be a non-transitory memory, such as a read-only memory (ROM), which may be integrated on the same chip as the processor, or may be separately set in different On the chip, the embodiment of the present application does not limit the type of the memory and the way of setting the memory and the processor.
  • ROM read-only memory
  • sending instruction information may be a process of outputting instruction information from a processor
  • receiving capability information may be a process of receiving input capability information by a processor.
  • the processed output data can be output to the transmitter, and the input data received by the processor can come from the receiver.
  • the transmitter and the receiver may be collectively referred to as a transceiver.
  • the processing device in the above eighth aspect may be one chip.
  • the processor can be implemented by hardware or software. When implemented by hardware, the processor can be a logic circuit, integrated circuit, etc .; When implemented by software, the processor can be a general-purpose processor. It is implemented by reading software code stored in a memory, which can be integrated in a processor, can be located outside the processor, and exists independently.
  • a computer program product includes a computer program (also referred to as code or instructions), and when the computer program is executed, causes a computer to execute the first aspect or the first aspect The method in the second aspect and any one of the possible implementation manners in the first aspect or the second aspect.
  • a computer-readable medium stores a computer program (also referred to as a code or an instruction), which when executed on a computer, causes the computer to execute the first aspect or the first aspect.
  • a computer program also referred to as a code or an instruction
  • a communication system including the foregoing network device and terminal device.
  • FIG. 1 is a schematic diagram of a communication system applicable to an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a method for receiving and sending data according to an embodiment of the present application
  • FIG. 3 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunications System
  • WiMAX Global Interoperability for Microwave Access
  • FIG. 1 is a schematic diagram of a wireless communication system 100 applicable to an embodiment of the present application.
  • the wireless communication system 100 may include at least one network device, such as network device 111 and network device 112 shown in FIG. 1, and the wireless communication system 100 may further include at least one terminal device, such as shown in FIG. The terminal device 121 to the terminal device 123.
  • Both network equipment and terminal equipment can be configured with multiple antennas, and network equipment and terminal equipment can use multi-antenna technology to communicate.
  • the network device 111 may be a network device in the cell # 1, or in other words, the network device 111 may serve a terminal device (for example, the terminal device 121) in the cell # 1.
  • the network device 112 may be a network device in the cell # 2, or in other words, the network device 112 may serve terminal devices (for example, the terminal device 122) in the cell # 2.
  • a cell can be understood as a serving cell of a network device, that is, an area within a coverage area of a wireless network of the network device.
  • the network device 111 in the cell # 1 and the network device 112 in the cell # 2 may be different network devices, for example, a base station. That is, cell # 1 and cell # 2 can be managed by different base stations.
  • the network device 111 in the cell # 1 and the network device 112 in the cell # 2 may also be different RF processing units of the same base station, for example, a radio remote unit (RRU), that is, the cell # 1 It can be managed by the same base station as cell # 2, and has the same baseband processing unit and intermediate frequency processing unit, but different radio frequency processing units. This application does not specifically limit this.
  • RRU radio remote unit
  • the network device in the wireless communication system may be any device having a wireless transceiver function.
  • the equipment includes but is not limited to: evolved Node B (eNB), radio network controller (RNC), node B (NB), base station controller (BSC) Base station, base transceiver station (BTS), home base station (e.g., home NodeB, or home Node B, HNB), baseband unit (BBU), wireless fidelity (WIFI) system Access point (AP), wireless relay node, wireless backhaul node, transmission point (TP) or transmission and reception point (TRP), etc.
  • 5G such as NR , GNB in the system, or, transmission point (TRP or TP), one or a group of base stations (including multiple antenna panels) antenna panel in a 5G system, or a network node constituting a gNB or a transmission point,
  • BBU baseband unit
  • DU distributed unit
  • the gNB may include a centralized unit (CU) and a DU.
  • the gNB may also include a radio frequency unit (radio unit, RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements radio resource control (RRC), packet data convergence layer protocol (PDCP) layer functions, and DU implements wireless chain Functions of radio control (RLC), media access control (MAC) and physical (PHY) layers.
  • RRC radio resource control
  • PDCP packet data convergence layer protocol
  • RLC wireless chain Functions of radio control
  • MAC media access control
  • PHY physical
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network equipment in an access network (RAN), or the CU can be divided into network equipment in a core network (CN), which is not limited in this application.
  • RAN access network
  • CN core network
  • the terminal equipment in the wireless communication system may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, User terminal, terminal, wireless communication device, user agent or user device.
  • the terminal device in the embodiments of the present application may be a mobile phone, a tablet, a computer with a wireless transmitting and receiving function, a virtual reality (VR) terminal device, or an augmented reality (AR) terminal.
  • Equipment wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( wireless terminals in transportation, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the embodiment of the present application does not limit the application scenario.
  • network devices can use the same time-frequency resources to communicate with multiple terminal devices.
  • the network device 111 may use the same time-frequency resources to communicate with the terminal device 121 and the terminal device 122.
  • network devices can also use the same time-frequency resources to communicate with multiple terminal devices.
  • the time-frequency resources used by the network device 111 to communicate with the terminal device 122 are the same as the time-frequency resources used by the network device 112 to communicate with the terminal device 123.
  • the time-frequency resource may also be the same as the time-frequency resource used by the network device 111 and the terminal device 121 for communication.
  • the terminal device 122 when receiving the data sent by the network device 111, the terminal device 122 may be interfered by the terminal device 121 and the terminal device 123. Therefore, the terminal device 122 needs to perform interference estimation, so as to accurately demodulate the data sent by the network device 111 to itself.
  • Transmit diversity may include, but is not limited to: space-frequency transmit diversity (SFTD, or SFBC), space-time transmit diversity (STTD, In other words, space-time block coding (STBC), RE-level precoding polling, and so on.
  • SFTD space-frequency transmit diversity
  • STTD space-time transmit diversity
  • STBC space-time block coding
  • the interference estimation covariance matrix constructed by the terminal equipment 122 may be different.
  • the terminal device 122 performs interference estimation, if the transmission scheme used for data transmission by the terminal device 121 and the terminal device 123 cannot be known in advance, it may be necessary to traverse various transmission schemes to perform interference estimation and demodulation by means of blind detection. Increases the complexity of interference estimation and demodulation.
  • the present application provides a method for receiving and transmitting data, which can reduce the complexity of interference estimation and demodulation.
  • the terminal devices are divided into a first terminal device and a second terminal device.
  • the first terminal device and the second terminal device can both receive data from the network device.
  • a first terminal device receives data from a network device, it may be interfered by a signal sent to a second terminal device; when a second terminal device receives data from a network device, it may also receive a signal sent to the first terminal device Interference.
  • the first terminal device and the second terminal device may be terminal devices in the same cell, or may be terminal devices in different cells. It can be understood that the first terminal device and the second terminal device are relative. For example, if the terminal device 121 in FIG. 1 is a first terminal device, the terminal device 122 may be a second terminal device; if the terminal device 122 in FIG. 1 is a first terminal device, the terminal devices 121 and 123 may be second terminals device.
  • Resource element Or, resource element. One symbol can be occupied in the time domain, and one subcarrier can be occupied in the frequency domain.
  • Resource block One RB is occupied in the frequency domain Continuous subcarriers, occupying in the time domain Consecutive symbols. among them, Both are positive integers. For example, in the LTE protocol, Can be equal to 12, Can be equal to 7; in the NR protocol, Can be equal to 12, Can be equal to 14. In the embodiment of the present application, the RB may be an example of a resource unit.
  • the symbols may include uplink symbols and downlink symbols.
  • the uplink symbols may be referred to as Single-Carrier-Frequency Division Multiple Access (SC-FDMA) symbols or Orthogonal Frequency Division Multiple Access (Orthogonal Frequency Division Multiplexing (OFDM) symbols; downlink symbols may be referred to as OFDM symbols, for example.
  • SC-FDMA Single-Carrier-Frequency Division Multiple Access
  • OFDM Orthogonal Frequency Division Multiple Access
  • OFDM Orthogonal Frequency Division Multiple Access
  • Resource unit It can be used as a unit of measurement for resources occupied by resources in the time-frequency domain.
  • the resource unit may include, for example, an RB, a resource block group (RBG) composed of one or more RBs, one or more RB pairs, half RBs, and 1/4 RB, RE group consisting of one or more REs, etc.
  • RBG resource block group
  • RE group consisting of one or more REs, etc.
  • an RB may be composed of 12 consecutive subcarriers in the frequency domain and 14 consecutive symbols in the time domain.
  • Time slot In NR, time slot is the smallest scheduling unit of time.
  • a slot format includes 14 OFDM symbols, and the CP of each OFDM symbol is a normal CP; a slot format includes 12 OFDM symbols, and the CP of each OFDM symbol is an extended CP; a slot The format is 7 OFDM symbols, and the CP of each OFDM symbol is a normal CP.
  • the OFDM symbols in a time slot can be used for all uplink transmissions; all of them can be used for downlink transmissions; some can be used for downlink transmissions, some are used for uplink transmissions, and some are reserved for no transmission. It should be understood that the above examples are merely illustrative, and should not be construed as limiting the present application. For system forward compatibility considerations, the slot format is not limited to the above example.
  • Transmission scheme or transmission mode, which can be the transmission scheme defined in LTE protocol or NR protocol.
  • the transmission scheme can be used to indicate the technical scheme used for transmitting data. It should be understood that the transmission scheme is only a naming, and this application does not exclude the possibility of replacing the transmission scheme by other naming in future protocols.
  • Space division multiplexing When the quality of the wireless channel is good and the rank of the channel matrix is greater than 1, the MIMO system can use multiple transmit antennas and multiple receive antennas to send multiple channels of data in parallel. Multiple channels of data are different, which can increase the throughput of data transmission.
  • Closed loop space division multiplexing In the NR protocol, it can also be referred to as transmission scheme 1 (TS1).
  • TS1 transmission scheme 1
  • the transmitting end transmits multiple data streams in parallel
  • the corresponding precoding matrix can be determined according to the CSI of the downlink channel, especially PMI and RI, and the multiple data streams to be sent are respectively precoded and then transmitted.
  • closed-loop space division multiplexing also includes transmitting a data stream with only one antenna port.
  • the CSI of the downlink channel can be feedback based on the reference signal by the receiving end; or the CSI of the downlink channel can be obtained by measuring the uplink channel based on the reciprocity of the uplink and downlink channels by the transmitting end; Ease of access is combined with receiving-end feedback. This application does not limit this.
  • the MIMO system can use multiple transmitting antennas to send multiple identical data in parallel, which can improve the reliability of data transmission.
  • diversity that is, dividing a signal into multiple channels, sending them at different times, different frequencies, or different spaces, and the receiving end then combines them in a centralized manner.
  • the fading of other signals may be lighter, and the probability of deep fading of each signal at the same time is lower, so the probability of deep fading of the composite signal is greatly reduced.
  • transmit diversity can be understood as reducing the probability of deep fading of the composite signal through multiple independent fading signals, so it is beneficial to obtain diversity gain.
  • Multiple signals transmitted at different times can be referred to as time diversity; multiple signals transmitted at different frequencies can be referred to as frequency diversity; multiple signals transmitted in different spaces can be referred to as spatial diversity .
  • Space-frequency block coding Combining spatial diversity and frequency diversity, a space-frequency transmit diversity scheme is proposed.
  • the modulated symbol stream can be obtained by layer mapping and Alamouti coding to obtain at least two symbol streams, and then pre-encode the at least two symbol streams and send them.
  • the modulated symbol streams are s 2 and s 1 and can be mapped to at least two layers through layer mapping.
  • the symbol stream after layer mapping can be expressed as Then the two symbol streams obtained by performing Alamouti encoding on the two symbol streams in the spatial and frequency domains can be expressed as
  • the first antenna and the second antenna send s 1 and s 2 respectively
  • the first antenna and the second antenna send respectively with
  • the receiving end has received the signal r 1
  • the receiving end has received the signal r 2
  • the receiving end can be based on the received signals r 1 and r 2 to determine s 1 and s 2 .
  • the two symbol streams obtained after the foregoing transmit diversity operation can also be expressed as That is, on the first subcarrier, the first antenna and the second antenna send s 1 and On the second subcarrier, the first antenna and the second antenna send s 2 and
  • Space-time block coding A space-time transmit diversity scheme that combines space diversity and time diversity. Similar to space-frequency block coding, the modulated symbol stream can be obtained by layer mapping and Alamouti coding to obtain at least two symbol streams, and then pre-encode the at least two symbol streams and send them.
  • the transmitting end can send s 1 and s 2 through the first antenna and the second antenna respectively on the first symbol, and send through the first antenna and the second antenna respectively on the second symbol with
  • on the first symbol can be assumed that the receiver receives a signal r 1
  • the second symbol may be assumed that the receiver receives a signal r 2
  • the receiving terminal may be based on the received signal r 1 and r 2 to determine s 1 and s 2 .
  • the two symbol streams obtained after the foregoing transmit diversity operation can also be expressed as That is, on the first time unit, the first antenna and the second antenna sent s 1 and On the second time unit, the first antenna and the second antenna sent s 2 and
  • port or antenna port. It can be understood as a transmitting antenna identified by the receiving end, or a transmitting antenna that can be distinguished spatially.
  • One antenna port can be configured for each virtual antenna, and each virtual antenna can be a weighted combination of multiple physical antennas. According to the different signals carried, the antenna port can be divided into a reference signal port and a data port.
  • the reference signal port includes, but is not limited to, a DMRS port, a CSI-RS port, and the like.
  • Demodulation reference signal a reference signal that can be used to demodulate data or signaling. According to different transmission directions, it can be divided into uplink demodulation reference signal and downlink demodulation reference signal.
  • the demodulation reference signal may be the DMRS in the LTE protocol or the NR protocol, or may also be other reference signals defined in future protocols for implementing the same or similar functions. This application does not limit this.
  • a DMRS can be carried in a physical shared channel and sent with a data signal, and is used to demodulate the data signal carried in the physical shared channel.
  • the physical downlink shared channel (physical downlink shared channel (PDSCH)) is sent together with the downlink data
  • the physical uplink shared channel (physical uplink shared channel (PUSCH) is sent together with the uplink data).
  • the DMRS can also be carried in the physical control channel and sent together with the control signaling for demodulating the control signaling carried by the physical control channel summary.
  • a physical downlink control channel (physical downlink control channel, PDCCH) is sent together with downlink control signaling
  • a physical uplink control channel (physical uplink control channel, PUCCH) is sent together with uplink control signaling.
  • the demodulation reference signal may include a downlink demodulation reference signal sent through a PDCCH or a PDSCH, and may also include an uplink demodulation reference signal sent through a PUCCH or a PUSCH.
  • the demodulation reference signal is simply referred to as DMRS.
  • the DMRS can adopt a pseudo-noise (PN) sequence. Therefore, the DMRS can also be called a DMRS sequence.
  • PN pseudo-noise
  • DMRS and DMRS sequence are used interchangeably, but those skilled in the art can understand that the meanings to be expressed are the same when the difference is not emphasized.
  • the DMRS sequence may be composed of modulation symbols carried on multiple REs, and each modulation symbol may be, for example, a Quadrature Phase Shift Keying (QPSK) symbol.
  • QPSK Quadrature Phase Shift Keying
  • the modulation symbol r (n) of the DMRS sequence carried on the nth subcarrier can be obtained by the following formula 1:
  • the form presented by r (n) is a complex form obtained by modulation of the PN sequence, for example, it can represent a QPSK symbol.
  • n represents the n-th subcarrier among the subcarriers occupied by the DMRS in the component carrier (CC).
  • d represents the density of the DMRS in an RB on an OFDM symbol, It can represent the number of RBs included in a CC.
  • c (i) represents a PN sequence defined by an initial value c init .
  • the initial value c init can be further obtained by the following formula two:
  • l represents the lth symbol in a time slot, Indicates the number of time slots in a frame, Represents the number of symbols in a slot.
  • Sequence ID It can be used to generate the initial value c init of the DMRS sequence.
  • the scrambling code identifier SCID can be used to indicate the DMRS sequence scrambling code generation information.
  • n SCID can be indicated by downlink control information (DCI), Can be indicated by high-level parameters.
  • DCI downlink control information
  • the DCI may include an indication field for indicating a value of n SCID .
  • the value of n SCID can be 0 or 1, and can be used for downlink transmission; the high-level parameter scrambling ID 0 (scramblingID0) in the DMRS-DownlinkConfig (information element) information element (IE) Scrambling ID (scramblingID1) can be configured when the value of SCID is 0 or 1, respectively Value.
  • IE information element information element
  • the terminal device when the terminal device receives the DCI of format 1_0, it can implicitly indicate that the value of n SCID is 0, and the n SCID can be used for downlink transmission.
  • the high-level parameter scramblingID0 in DMRS-DownlinkConfig IE is configurable n when the SCID value is 0 Value.
  • the terminal device when the terminal device receives the DCI of format 0_1, it can be determined that the value of n SCID used for uplink transmission is 0 or 1, and the high-level parameters can be configured respectively when the value of n SCID is 0 or 1. Value.
  • NR In NR,
  • the terminal device when the terminal device receives the DCI of format 0_0, it can be determined that the value of n SCID used for uplink transmission is 0, and the high-level parameter can be configured when the value of n SCID is 0. Value.
  • NR In NR,
  • the terminal device When the terminal device does not receive the DCI listed above, it can default to The value of the cell
  • n SCID and UE-specific (UE specific), n SCID and DMRS used by DMRS sent to different terminal equipment It may be the same or it may be different.
  • a parameter set can include a scrambling code identifier SCID and a sequence identifier A combination of short names.
  • a scrambling code identifier SCID and a sequence identifier in a parameter set can be used to determine an initial value c init .
  • symbols included in a time domain in a resource unit are numbered consecutively starting from # 0, and subcarriers included in a frequency domain are numbered starting from # 0.
  • the RB may include, for example, symbols # 0 to # 13 in the time domain, and may include, for example, subcarriers # 0 to # 11 in the frequency domain.
  • i in the i-th (i ⁇ 0, and i is an integer) symbol (or subcarrier) in the following description corresponds to the index of the symbol (or subcarrier), for example, the 0th Symbols, corresponding to the number 0 symbol, that is, the symbol # 0.
  • a resource unit may include symbols # 1 to # 14 in the time domain, and may include subcarriers # 1 to # 12 in the frequency domain.
  • transformations of various matrices are involved.
  • the superscript H represents the conjugate transpose, for example, A H represents the conjugate transpose of the matrix (or vector) A; the superscript * represents the conjugate, for example, B * represents the conjugate of the matrix (or vector) B; ⁇ Indicates the estimated value, such as, Represents the estimated value of matrix (or vector) C.
  • the description of the same or similar situation is omitted.
  • DMRS and “DMRS sequence” may be used interchangeably, and the meanings to be expressed are the same when the difference is not emphasized.
  • the first, the second, and the third are only for the convenience of distinguishing different objects, and should not constitute any limitation to the present application.
  • different terminal devices, different DMRSs, and different indication information are distinguished.
  • pre-acquisition may include indication or pre-definition by network device signaling, for example, protocol definition.
  • pre-defined can be achieved by pre-saving corresponding codes, forms, or other methods that can be used to indicate related information in devices (for example, terminal devices and network devices), and this application does not make specific implementations thereof. limited.
  • saving involved in the embodiments of the present application may refer to saving in one or more memories.
  • the one or more memories may be provided separately or integrated in an encoder or a decoder, a processor, or a communication device.
  • the one or more memories may also be partly provided separately and partly integrated in a decoder, a processor, or a communication device.
  • the type of the memory may be any form of storage medium, which is not limited in this application.
  • the "protocol” involved in the embodiment of the present application may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and a related protocol applied in a future communication system, which is not limited in this application.
  • the wireless communication system may include at least one network device and at least two terminal devices.
  • the wireless communication system may be the communication system 100 shown in FIG. 1.
  • the network device 111 sends downlink data to the terminal device 121 and the terminal device 122 using the same time-frequency resources
  • the terminal device 121 and the terminal device 122 may interfere with each other; for example, when the network device 111 sends the terminal device 121 to the terminal device 121
  • the time-frequency resource for sending downlink data is the same as the time-frequency resource for the network device 112 sending downlink data to the terminal device 123
  • the terminal device 121 and the terminal device 123 may interfere with each other.
  • FIG. 3 is a schematic flowchart of a method 200 for receiving and sending data according to an embodiment of the present application, which is shown from the perspective of device interaction. As shown, the method 200 may include steps 210 to 250. The method 200 is described in detail below.
  • step 210 the network device generates a DMRS sequence, which is related to a data transmission scheme.
  • the DRMS sequence generated by the network device and sent to the first terminal device may be referred to as a first DMRS sequence, and the data generated by the network device and sent to the first terminal device may be recorded as the first Data; accordingly, the DMRS sequence generated by the network device and sent to the second terminal device may be recorded as the second DMRS sequence, and the data generated by the network device and sent to the second terminal device may be recorded as the second data.
  • the DMRS sequence is related to a data transmission scheme. That is, the first DMRS sequence is related to the first data transmission scheme, and the second DMRS sequence is related to the second data transmission scheme.
  • each modulation symbol r (n) in the DMRS sequence can be determined by the initial value c init , and the initial value can be determined by the formula 2 listed above.
  • the initial value is constant, each modulation symbol r (n) in the DMRS sequence may be determined. Therefore, when the DMRS sequence is related to the data transmission scheme, the initial value may also be related to the data transmission scheme.
  • the initial value can be compared with the scrambling code identifier SCID and sequence identifier Related.
  • the scrambling code identifier SCID and the sequence identifier If any one of them is different, the calculated initial value may be different.
  • the SCID and the sequence identifier are based on the same scrambling code identifier.
  • the calculated initial values may also differ.
  • the parameter set used to generate the initial value of the DMRS sequence may have a corresponding relationship with the transmission scheme; or, the generation formula used to generate the initial value of the DMRS sequence may be related to the transmission scheme. Or, both the parameter set and the generating formula used to generate the initial value of the DMRS sequence may be related to the transmission scheme.
  • the protocol defines the relationship between the DMRS sequence and the transmission scheme by default as one of the situations listed below, both the network device and the terminal device can generate the DMRS sequence based on the corresponding manner.
  • the correspondence between the DMRS sequence and the data transmission scheme listed above can be global.
  • all communication devices in the communication system defined by the protocol can follow the same correspondence;
  • the DMRS sequence and data The corresponding relationship of the transmission scheme can also be at the UE group level, that is, all terminal devices in the same UE group can follow the same corresponding relationship, and the terminal devices included in the UE group can be composed of Network equipment is pre-configured;
  • the correspondence between the DMRS sequence and the data transmission scheme can also be cell-level, that is, all communication devices in the same cell can follow the same correspondence;
  • the DMRS sequence and the data transmission scheme The corresponding relationship may also be UE-level, that is, a corresponding relationship is configured for each terminal device.
  • the correspondence between the DMRS sequence and the data transmission scheme may be predefined, such as the protocol definition, both the network equipment and the terminal equipment may save the correspondence in advance; the correspondence between the DMRS sequence and the data transmission scheme may also be a network device Configured for terminal devices.
  • the corresponding relationship is configured by the network device and is at the global or UE group level, all network devices in the communication system may be configured with the same corresponding relationship, for example, may be implemented by an algorithm.
  • the protocol may assume that each transmission scheme corresponds to one or more dedicated parameter sets.
  • the network device determines the parameters in the parameter set, it can identify the SCID and sequence identifier based on the scrambling code in the parameter set. Generate a DMRS sequence. Therefore, before step 210, optionally, the method 200 further includes: the network device determines a parameter set corresponding to the transmission scheme.
  • the network device can determine the parameter set corresponding to the transmission scheme through the following implementations:
  • the scrambling code identifier SCID and sequence identifier may be predefined, such as a protocol definition.
  • the protocol may predefine the correspondence between at least one set of parameter sets and at least one transmission scheme.
  • Each transmission scheme may correspond to one or more sets of parameter sets.
  • Each set of parameter sets includes a scrambling code identifier SCID and a corresponding Sequence ID
  • the network device may determine a parameter set corresponding to a transmission scheme used for data transmission according to a correspondence between at least one parameter set defined by the protocol and at least one transmission scheme.
  • Implementation method 2 The scrambling code identifier SCID and sequence identifier The correspondence between the combination of the transmission scheme and the transmission scheme may be configured by the network device.
  • the network device may determine a correspondence between at least one parameter set and at least one transmission scheme in advance, and may determine a transmission scheme for data transmission according to the correspondence between the at least one parameter set and at least one transmission scheme.
  • the corresponding parameter set may be determined a correspondence between at least one parameter set and at least one transmission scheme in advance, and may determine a transmission scheme for data transmission according to the correspondence between the at least one parameter set and at least one transmission scheme. The corresponding parameter set.
  • the correspondence between the scramble code identifier n SCID and the transmission scheme can be defined by a protocol or configured by a network device.
  • the scramble code identifier n SCID and the sequence identifier The corresponding relationship can be configured by the network device.
  • the protocol can be defined in advance at least a correspondence relationship between identification scrambling code and at least one n SCID transmission scheme, or a network device may be pre-configured corresponding relationship between the at least one scrambling code identifier n SCID with at least one transmission scheme, each The transmission scheme may correspond to one or more scrambling code identifiers n SCID .
  • the network device can configure a sequence identifier corresponding to the scrambling identifier n SCID through high-level signaling in advance. For example, it can be configured through an existing RRC message.
  • the network device may according to the correspondence between at least one scrambling code identifier n SCID defined by the protocol and at least one transmission scheme, and the sequence identifier corresponding to each scrambling code identifier n SCID determined by itself. Determine the parameter set corresponding to the transmission scheme used for data transmission.
  • the sequence identification The corresponding relationship with the transmission scheme can be defined by the protocol or configured by the network device, the scrambling code identifier SCID and the sequence identifier The corresponding relationship can be determined by the network device.
  • the protocol may define at least one sequence identifier in advance Correspondence to at least one transmission scheme, or the network device may be pre-configured with at least one sequence identifier Correspondence with at least one transmission scheme, each transmission scheme may correspond to one or more sequence identifiers
  • the network device can configure a sequence identifier corresponding to the scrambling identifier n SCID through high-level signaling in advance. For example, it can be configured through an existing RRC message.
  • the network device may according to the correspondence between the at least one sequence identifier corresponding to the protocol and the at least one transmission scheme, and the sequence identifier corresponding to each scrambling code identifier n SCID determined by itself. Determine the parameter set corresponding to the transmission scheme used for data transmission.
  • Case 2 The generation formula (or calculation method) of the initial value corresponds to the transmission scheme:
  • the formula for generating the initial value of the DMRS sequence listed above can be understood as the calculation method of the initial value of the DMRS sequence. In the following, for the sake of brevity, the description of the same or similar situations is omitted.
  • the protocol may default to an initial value generation formula for each transmission scheme.
  • the protocol may define a formula for generating an initial value corresponding to each transmission scheme in advance.
  • the initial value generation formula can be, for example, Formula 2 listed above;
  • the initial value generation formula can be, for example, another formula different from Formula Two.
  • a formula for generating an initial value of the DMRS sequence can be determined.
  • the network device may determine that the parameter set corresponds to the transmission scheme according to one of the four possible implementation manners shown in Case 1. Parameter set.
  • the network device may determine the generation formula of the initial value corresponding to the transmission scheme according to the manner shown in the second case.
  • the network device may generate the initial value of the DMRS according to the determined parameter set for generating the initial value and the generative formula, and then generate a DMRS sequence.
  • the transmission scheme may be indicated by an index.
  • the network device may send the correspondence between the parameter set used to generate the initial value of the DMRS sequence and the transmission scheme to the terminal device, or the network device may also send the parameter set used to generate the initial value of the DMRS sequence to the transmission scheme.
  • the correspondence between the indexes is sent to the terminal device.
  • the network device and the terminal device may save the correspondence between the generation formula used to generate the initial value of the DMRS sequence and the transmission scheme, or the network device and the terminal device may also save the generation of the initial value used to generate the DMRS sequence in advance Correspondence between the formula and the index of the transmission scheme.
  • the network device may process the data to be transmitted based on the data transmission scheme so as to transmit the data in step 220.
  • step 220 the network device sends a DMRS sequence and data.
  • the DMRS sequence and data may be carried on the PDSCH, for example.
  • the network device may map the DMRS sequence generated in step 210 and the data to be transmitted onto the PDSCH, and send it to each terminal device.
  • Each terminal device may determine a time-frequency resource for receiving the PDSCH according to a previously received control channel, such as a physical downlink control channel (PDCCH), and then receive the DMRS sequence and data on the corresponding time-frequency resource.
  • a previously received control channel such as a physical downlink control channel (PDCCH)
  • step 220 specifically includes:
  • Step 2201 The network device sends a first DMRS sequence and first data.
  • the DMRS sequence sent by the network device to the first terminal device is referred to as the first DMRS sequence
  • the data sent by the network device to the first terminal device is referred to as the first data.
  • the first terminal device receives the first DMRS sequence and the first data.
  • the first DMRS sequence and data may be carried on the PDSCH, for example.
  • the terminal device may receive the first DMRS sequence and the first data on the PDSCH.
  • step 230 the first terminal device demodulates the first data based on the first DMRS to obtain an estimated value of the first data.
  • the first terminal device may estimate an equivalent channel matrix according to the first DMRS sequence received in step 2201 and the first DMRS sequence generated by itself.
  • the first DMRS sequence it receives is related to the transmission scheme.
  • the initial value of the first DMRS sequence is related to the transmission scheme
  • the first terminal device when the first terminal device generates the first DMRS sequence, it also needs to determine the initial value used to generate the first DMRS sequence.
  • the initial value of the first DRMS sequence when the initial value of the first DRMS sequence is related to the transmission scheme, the parameter set used to generate the initial value may have a corresponding relationship with the transmission scheme; or, the generation formula used to generate the initial value may be related to the transmission scheme. Correlation; or, both the parameter set and the generation formula used to generate the initial value may be related to the transmission scheme. Therefore, when generating the first DMRS sequence, the first terminal device can obtain the correspondence between the initial value of the DMRS sequence and the transmission scheme in advance.
  • both the network device and the first terminal device can generate the DMRS based on the corresponding manner.
  • Case 1 The generation formula of the initial value of the default DMRS sequence does not have a corresponding relationship with the transmission scheme. That is, the generation formula of the initial value is not distinguished for different transmission schemes. In other words, for different transmission schemes, it can be assumed that a generator with the same initial value is used.
  • the generator can be, for example, a generator used in the prior art, such as Formula 2 described above.
  • the correspondence between the parameter set and the transmission scheme may be defined in advance, such as a protocol definition, or may be indicated to the first terminal device after being determined by the network device.
  • the first terminal device may determine the correspondence between at least one parameter set and at least one transmission scheme through the following implementations:
  • the scrambling code identifier SCID and sequence identifier may be predefined, such as a protocol definition.
  • the first terminal device may save a correspondence between the at least one parameter set and at least one transmission scheme in advance.
  • Implementation method 2 The scrambling code identifier SCID and sequence identifier The correspondence with the transmission scheme can be configured by the network equipment.
  • the method further includes: the first terminal device receives first indication information, the first indication information is used to indicate a first mapping relationship, and the first mapping relationship is used to indicate any one of the following:
  • the network device sends the first indication information to indicate the first mapping relationship.
  • the network device may configure a scrambling code identifier n SCID and Correspondence between sequence identifiers, such as the high-level parameters described above.
  • the first terminal device may identify the SCID or sequence identifier according to the scrambling code.
  • scramble code identifier, SCID and sequence identifier Corresponding relationship, determine the scrambling code identifier n SCID and sequence identifier corresponding to various transmission schemes That is, a correspondence between at least one parameter set and at least one transmission scheme is determined.
  • the first instruction information may directly configure at least one scrambling code identifier SCID and its corresponding sequence identifier through one signaling. Correspondence with at least one transmission scheme, so that the first terminal device determines the scrambling code identifier n SCID and sequence identifier corresponding to various transmission schemes
  • the first indication information may be carried in any one of the following: an RRC message, a MAC CE, or a DCI.
  • the correspondence between the scramble code identifier n SCID and the transmission scheme can be defined by a protocol or configured by a network device.
  • the scramble code identifier n SCID and the sequence identifier The corresponding relationship can be configured by the network device.
  • the protocol can be defined in advance at least a correspondence relationship between identification scrambling code and at least one n SCID transmission scheme, or a network device may be pre-configured corresponding relationship between the at least one scrambling code identifier n SCID with at least one transmission scheme, each The transmission scheme may correspond to one or more scrambling code identifiers n SCID .
  • the network device can configure scrambling code identifier SCID and sequence identifier through high-level signaling in advance. Corresponding relationship. For example, it can be configured through an existing RRC message.
  • the first terminal device may according to the correspondence between at least one scrambling code identifier n SCID defined in the protocol and at least one transmission scheme, and the scrambling code identifier n SCID and sequence identifier indicated by the network device.
  • Corresponding relationship Determine a parameter set corresponding to each transmission scheme, that is, determine a correspondence between at least one parameter set and at least one transmission scheme.
  • the sequence identification The corresponding relationship with the transmission scheme can be defined by the protocol or configured by the network device, the scrambling code identifier SCID and the sequence identifier The corresponding relationship can be determined by the network device.
  • the protocol may define at least one sequence identifier in advance Correspondence to at least one transmission scheme, or the network device may be pre-configured with at least one sequence identifier Correspondence with at least one transmission scheme, each transmission scheme may correspond to one or more sequence identifiers
  • the network device can configure scrambling code identifier SCID and sequence identifier through high-level signaling in advance. Corresponding relationship. For example, it can be configured through an existing RRC message.
  • the first terminal device may identify according to at least one sequence defined in the protocol Correspondence with at least one transmission scheme, and scrambling code identifier n SCID and sequence identifier indicated by the network device
  • the corresponding relationship determines the parameter set corresponding to each transmission scheme, that is, determines the corresponding relationship between at least one parameter set and at least one transmission scheme.
  • the network device may indicate, through signaling, a scrambling code identifier SCID and / or a sequence identifier for generating an initial value of the first DMRS sequence.
  • the method 200 further includes: step 240, the network device sends second instruction information, where the second instruction information is used to indicate a scrambling code identifier n SCID and an initial value of the first DRMS sequence. / Or sequence identifier
  • the signaling may also be used to indirectly indicate a transmission scheme of the first data.
  • the first terminal device receives the second instruction information.
  • the second indication information may be used to indicate a scrambling code identifier n SCID and / or a sequence identifier corresponding to the first data transmission scheme. So that the first terminal device identifies the SCID and / or the sequence identifier according to the indicated scrambling code A first DMRS sequence is generated.
  • the terminal device may also determine a corresponding transmission scheme according to the correspondence relationship described in the first case and the parameter indicated by the second indication information, and the transmission scheme is the first data transmission scheme.
  • the network device may also directly indicate the transmission scheme of the first data through signaling.
  • the first terminal device may determine the initial value used to generate the first DMRS sequence according to the transmission scheme of the first data and the corresponding relationship described in Case 1. SCID and / or Sequence ID
  • the method further includes: the network device sends fourth indication information, where the fourth indication information is used to indicate a transmission scheme of the first data. Accordingly, the first terminal device receives the fourth indication information.
  • the scrambling code identifier SCID and the sequence identifier are not distinguished for different transmission schemes. In other words, for different transmission schemes, it can be assumed to use the same scrambling code identifier n SCID and sequence identifier
  • the scrambling code identification SCID and sequence identification For example, it can be configured through network equipment, such as multiple sequence identifiers configured through high-level signaling.
  • the DCI indicates the scrambling code identifier n SCID currently in use.
  • the protocol may assume that each transmission scheme corresponds to a formula for generating an initial value.
  • each transmission scheme corresponds to a formula for generating an initial value.
  • the protocol can predefine the formulas for generating initial values corresponding to each transmission scheme.
  • the formula used to generate the initial value may be, for example, Formula 2 listed above; when the transmission scheme is SFTD or STTD, the formula used to generate the initial value may be different from the formula
  • Another formula of two is the following formula 3 or formula 4:
  • the first terminal device may save the foregoing correspondence relationship in advance according to a correspondence relationship between at least one generative formula and at least one transmission scheme defined in the protocol.
  • the network device may also indicate the generating formula for generating the initial value of the first DMRS sequence through signaling.
  • the method 200 further includes: step 250, the network device sends third instruction information, where the third instruction information indicates a generating formula for generating an initial value of the first DRMS sequence, so that the first A terminal device generates a first DMRS sequence according to the generation formula, and can determine a corresponding transmission scheme, and the transmission scheme is a first data transmission scheme.
  • the signaling may also be used to indirectly indicate a transmission scheme of the first data.
  • step 250 the first terminal device receives the third instruction information.
  • the second indication information may be used to indicate the generating formula corresponding to the first data transmission scheme, so that the first terminal device may The generation of the indicated initial value generates a first DMRS sequence.
  • the terminal device may also determine a corresponding transmission scheme according to the correspondence relationship described in the second case and the generation formula indicated by the third instruction information, and the transmission scheme is the second data transmission scheme.
  • the network device may also directly indicate the transmission scheme of the first data through signaling.
  • the first terminal device may determine the initial value for generating the first DMRS sequence according to the transmission scheme of the first data and the corresponding relationship described in the second case.
  • the method further includes: the network device sends fourth indication information, where the fourth indication information is used to indicate a transmission scheme of the first data. Accordingly, the first terminal device receives the fourth indication information.
  • the first terminal device may determine and perform various transmissions according to one of the four possible implementation manners shown in Case 1.
  • the parameter set corresponding to the scheme.
  • the first terminal device may also determine the generating formula of the initial value corresponding to various transmission schemes according to the manner shown in the second case.
  • the first terminal device may determine a parameter set and / or a generating formula for generating an initial value of the first DMRS sequence according to the first data transmission scheme.
  • the transmission scheme of the first data may be notified by a network device, for example.
  • the network device may also indicate the scrambling code identifier SCID and / or sequence identifier used to generate the initial value of the first DMRS sequence through signaling.
  • the network device may also indicate the scrambling code identifier SCID and / or sequence identifier used to generate the initial value of the first DMRS sequence through signaling.
  • a generation formula for generating an initial value of the first DMRS sequence is indicated through signaling.
  • the method 200 further includes: Step 240: The network device sends second instruction information, where the second instruction information is used to indicate a scrambling code identifier SCID and / or a sequence identifier for generating an initial value of the first DRMS sequence.
  • the first terminal device receives the second instruction information.
  • the first terminal device may determine the scrambling code identifier SCID and / or the sequence identifier used to generate the initial value of the first DMRS sequence based on the received second instruction information.
  • the second indication information may also be used to indirectly indicate a transmission scheme of the first data.
  • the first terminal device After the first terminal device determines the transmission scheme of the first data based on the corresponding relationship described in the first case and the parameter indicated by the second indication information, it may further determine to generate the first data based on the corresponding relationship described in the second case. Generating formula of initial value of DMRS sequence.
  • the method 200 further includes: Step 250, the network device sends third instruction information, where the third instruction information is used to indicate a generating formula for generating an initial value of the second DMRS sequence.
  • the first terminal device receives the third instruction information.
  • the first terminal device may determine a generation formula for generating an initial value of the first DMRS sequence based on the received third instruction information.
  • the third indication information may also be used to indirectly indicate a transmission scheme of the first data.
  • the first terminal device After the first terminal device determines the transmission scheme of the first data based on the corresponding relationship described in Case 2 and the generative formula indicated by the third instruction information, it may further determine to generate the first data A scrambling code identifier of the initial value of a DMRS sequence n SCID and / or sequence identifier
  • the network device sends the second instruction information and the third instruction information to the first terminal device.
  • the first terminal device receives the second instruction information and the third instruction information.
  • the first terminal device may directly determine the scramble code identifier SCID and / or the sequence identifier used to generate the initial value of the first DMRS sequence according to the received second instruction information.
  • a generating formula for generating an initial value of the first DMRS sequence may be directly determined according to the received third instruction information.
  • the first terminal device may also determine a transmission scheme of the first data based on the second instruction information or the third instruction information.
  • the network device sends the fourth indication information to the first terminal device.
  • the first terminal device receives the fourth indication information.
  • the first terminal device may determine the scrambling code identifier SCID and / or the sequence identifier used to generate the initial value of the first DMRS sequence according to the transmission scheme indicated by the fourth instruction information and the corresponding relationship described in case 1.
  • a generation formula for generating an initial value of the first DMRS sequence may be determined according to the transmission scheme indicated by the fourth instruction information and the correspondence relationship described in the second case.
  • the network device may indicate the generating formula for generating the initial value of the first DMRS sequence by using only any one of the second instruction information or the fourth instruction information. Scrambling code identifier SCID and sequence identifier And the first data transmission scheme.
  • the network device may instruct the generating formula for generating the initial value of the first DMRS sequence only by using any one of the third instruction information or the fourth instruction information, Scrambling ID n SCID and Sequence ID And the first data transmission scheme.
  • the network device may instruct the generation of the initial value for generating the first DMRS sequence only by using any one of the second instruction information, the third instruction information, or the fourth instruction information. Scramble code identification SCID and sequence identification And the first data transmission scheme.
  • the second indication information, the third indication information, and the fourth indication information listed above may be carried in the DCI, for example.
  • the first terminal device After receiving the DCI, the first terminal device determines the transmission scheme of the first data and correspondingly generates the data.
  • the channel After the parameter set of the initial value of the first DMRS sequence and the initial value generation formula, the channel can be estimated based on the received first DMRS sequence and the first DMRS sequence generated by itself.
  • the first DMRS sequence sent by the network device is recorded as a vector y
  • the first DMRS sequence generated by the first terminal device is recorded as a vector x
  • the first DMRS sequence sent by the network device and The first DMRS sequence generated by the first terminal device may satisfy the following relationship:
  • the first terminal device may estimate an equivalent channel matrix according to the received first DMRS sequence and the first DMRS sequence generated by itself, thereby further demodulating data.
  • the equivalent channel vector may be estimated separately based on the DMRS sequence on each port, and then based on The transmission scheme and the equivalent channel vectors on each port construct an equivalent channel matrix.
  • the first terminal device may also receive the first DMRS and the first data while receiving the first data.
  • Other signals such as noise signals, are received on the time-frequency resource used to transmit the first data, or a data DMRS sequence is sent to other terminal devices (such as the second terminal device).
  • the data sent by the network device to the second terminal device may be recorded as the second data
  • the DMRS sequence sent by the network device to the second terminal device may be recorded as the second DMRS sequence.
  • the network device may indicate a time-frequency resource for transmitting the DMRS sequence in advance through, for example, DCI, and the time-frequency resource may include, for example, an OFDM symbol transmitting a front-loaded DMRS sequence and an additional DMRS sequence, or OFDM symbol.
  • the first terminal device may receive a signal on the time-frequency resource indicated by the network device for transmitting the DMRS sequence, and determine whether the second DMRS sequence is received based on a correlation between the second DMRS sequence and the received signal. If it is determined that the second DMRS sequence is received, the second DMRS sequence and the second data may cause interference to the reception of the first terminal device.
  • the first terminal device needs to further determine the transmission scheme of the second data and perform interference estimation. To demodulate the first data.
  • the following is a specific method for the first terminal device to determine whether the second DMRS sequence is received based on the correlation between the second DMRS sequence and the received signal, and to determine the transmission scheme of the second data if the second DMRS sequence is received. Detailed description.
  • the first terminal device may first assume that a second DMRS sequence is received, and estimate an interference channel based on a channel estimation manner. Specifically, the first terminal device may generate a second DMRS sequence based on traversing all possible transmission schemes (for example, TS1, SFTD, and STTD), based on each transmission scheme and the corresponding relationship between the transmission scheme and the DMRS sequence. The two DMRS sequences are the second DMRS sequences generated by the first terminal device based on the hypothetical transmission scheme. To facilitate distinguishing from the second DMRS sequence sent by the network device, the DMRS sequence generated by the first terminal device based on the hypothetical transmission scheme may be recorded as the hypothetical second DMRS sequence. The first terminal device may estimate the interference channel based on the hypothesized second DMRS sequence and the received signal according to the following formula:
  • y 11 indicates the signal received by the first receiving antenna on the first RE
  • y 12 indicates the signal received by the second receiving antenna on the first RE
  • y 21 indicates the first receiving antenna on the second RE
  • y 22 indicates the signal received by the first receiving antenna on the second RE.
  • p 1 represents the DMRS sequence of the first DMRS port generated by the first terminal device
  • p 2 represents the DMRS sequence of the second DMRS port generated by the first terminal device.
  • the first terminal device traverses the transmission scheme and generates a second DMRS sequence based on a hypothetical transmission scheme and substitutes the calculated value of the channel matrix calculated in Equation 5, the estimated value of the channel matrix is high. Greater than or equal to the preset threshold, it can be determined that the correlation between the second DMRS sequence generated based on the hypothetical transmission scheme and the received signal is high, which indicates that the hypothetical second DMRS sequence and the received signal It is close, that is, the signal received by the first terminal device is the second DMRS sequence, and the transmission scheme guessed by the first terminal device this time is also the second data transmission scheme.
  • the first terminal device traverses the transmission scheme and generates a second DMRS sequence based on a hypothetical transmission scheme and substitutes the estimated value of the channel matrix calculated in Equation 5, for example, at least An element approaches zero, or each element in the channel matrix approaches zero, or each element in the channel matrix is less than a preset threshold, then the The correlation between the second DMRS sequence generated by the transmission scheme and the received signal is low, which indicates that the assumed second DMRS sequence is different from the received signal, that is, the assumed transmission scheme of the first terminal device is not the first Two data transmission schemes.
  • the first terminal device traverses all the transmission schemes, and the estimated value of the channel matrix calculated according to the above formula based on each transmission scheme is low, it can be determined that the second DMRS sequence generated based on each transmission scheme and The correlation of the received signals is low. This indicates that the first terminal device has not received the second DMRS sequence, or that the network device has not sent the second DMRS sequence and the second data, and the signal received by the first terminal device at this time may only be noise. That is, the first terminal device is not interfered by other signals at this time.
  • the first terminal device traverses various transmission schemes to generate a hypothetical second DMRS sequence may be based on the following three situations:
  • Case 1 The parameter set used to generate the initial value corresponds to the transmission scheme:
  • Case 1 The generation formula of the default initial value does not correspond to the transmission scheme. That is, the generation formula of the initial value is not distinguished for different transmission schemes. In other words, for different transmission schemes, it can be assumed that a generator with the same initial value is used.
  • the generator can be, for example, a generator used in the prior art, such as Formula 2 described above.
  • the first terminal device can traverse the scrambling code identifier n SCID and sequence identifier corresponding to various transmission schemes And the formula 2 listed above generates an initial value, and further generates a second DMRS sequence according to formula 1.
  • the scrambling code identifier SCID and the sequence identifier are not distinguished for different transmission schemes. In other words, for different transmission schemes, it can be assumed to use the same scrambling code identifier n SCID and sequence identifier
  • the scrambling code identification SCID and sequence identification For example, it can be configured through network equipment, such as multiple sequence identifiers configured through high-level signaling.
  • the DCI indicates the scrambling code identifier n SCID currently in use.
  • the first terminal device may traverse the generating formulas of the initial values corresponding to various transmission schemes to generate initial values, and further generate a DMRS sequence according to Formula One.
  • the first terminal device may traverse the parameter sets and initial value generation formulas corresponding to various transmission schemes, generate initial values, and further generate a DMRS sequence according to Formula One.
  • step 220 further includes: step 2202, the network device sends the second DMRS sequence and the second data. Accordingly, the first terminal device receives the second DMRS sequence and the second data.
  • the first DMRS sequence and the second DMRS sequence may occupy the same time-frequency resource, or may occupy different time-frequency resources.
  • the first DMRS sequence and the second DMRS sequence may be sent to different ports by, for example, code division multiplexing (CDM)
  • CDM code division multiplexing
  • the DMRS sequence can also be two DMRS sequences on the same port.
  • the first DMRS sequence and the second DMRS sequence may be through, for example, frequency division multiplexing (FDM) or time division multiplexing (FDM) DMRS sequences of different ports sent by multiplexing (TDM).
  • FDM frequency division multiplexing
  • FDM time division multiplexing
  • step 230 may further include: the first terminal device demodulates the first data based on the first DMRS sequence and the second DMRS sequence to obtain an estimated value of the first data.
  • interference covariance matrices constructed are different due to different processing methods of signals under different transmission schemes.
  • the transmission scheme is TS1
  • the network device uses port # 1 to transmit the second data to the second terminal device.
  • the first terminal device may separately estimate the equivalent channel vectors corresponding to port # 0 and port # 1 according to the received DMRS corresponding to different ports, for example, respectively with According to the second data transmission scheme TS1, the interference noise covariance matrix corresponding to port # 1 can be determined as
  • the transmission scheme used when the network device uses port # 0 to transmit data to the first terminal device is TS1
  • the transmission scheme used when the network device uses ports # 1 and # 2 to transmit data to the second terminal device is SFTD
  • the first terminal device can respectively estimate the equivalent channel vectors corresponding to port # 0, port # 1, and port # 2 according to the DMRS corresponding to different ports, for example, respectively with
  • the interference noise covariance matrix needs to be considered by combining the two subcarriers of the two ports.
  • the following matrix can be constructed from the equivalent channel vectors corresponding to the two REs of the two ports (ie, ports # 1 and # 2): If The first terminal device can obtain interference noise covariance matrices E (a 0 a 0 H ) and E (a 1 a 1 H ) according to the equivalent channel vectors corresponding to ports # 1 and # 2, respectively.
  • the interference noise covariance matrix can be directly determined according to the transmission scheme without traversal.
  • Various transmission schemes can be used for blind guessing, which can greatly reduce the complexity of interference estimation of terminal equipment.
  • the first terminal device After the first terminal device obtains the equivalent channel matrix based on the first DMRS sequence estimation, and constructs the interference noise covariance matrix based on the transmission scheme of the second DRMS sequence and the second data, it can further obtain Estimated value
  • H represents the equivalent channel matrix used for the first data transmission, that is, the equivalent channel matrix estimated from the first DMRS sequence
  • y represents the signal received by the first terminal device
  • x represents the required
  • the first data sent to the first terminal device the Represents an estimated value of the first data x.
  • the first terminal device can demodulate the first data based on the interference noise covariance matrix and using a receiving algorithm in the prior art.
  • the receiving algorithm may be a minimum mean square error (MMSE) -interference rejection combining (IRC) receiving algorithm. Since the receiving algorithm and the specific data demodulation process for processing the received signal may be the same as those in the prior art, for brevity, a detailed description of the specific process is omitted here.
  • the network device can also generate and send more DMRS sequences and Data, terminal equipment may also receive more DMRS sequences and data interference.
  • the first terminal device by establishing a correspondence relationship between the DMRS sequence and the transmission scheme, the first terminal device only needs to traverse the parameter set and / or the initial value generation formula corresponding to each transmission scheme, and determine the first The two data transmission scheme, that is, the transmission scheme of the second data can be determined in advance, and then the interference estimation and data demodulation can be performed according to the second data transmission scheme and the second DMRS sequence.
  • the first terminal device no longer needs to traverse various transmission schemes to blindly detect transmission schemes of interfering data and repeatedly try data demodulation, and the demodulation of the data can not be completed until the data demodulation is successful. . Therefore, the calculation amount of the first terminal device can be greatly reduced, and the complexity of the interference estimation of the first terminal device is greatly reduced, thereby reducing the demodulation complexity.
  • case 3 can greatly reduce the complexity of interference estimation.
  • the transmission schemes in case 1 and case 2 are only related to one of the parameter set or the initial value generation formula. Therefore, compared with case 3, the calculation amount is smaller and the complexity is lower.
  • FIG. 3 is a schematic block diagram of a communication device according to an embodiment of the present application.
  • the communication device 500 may include a transceiver unit 510 and a processing unit 520.
  • the communication device 500 may correspond to the terminal device in the foregoing method embodiment.
  • the communication device 500 may be a terminal device or a chip configured in the terminal device.
  • the communication device 500 may correspond to a terminal device in the method 200 according to the embodiment of the present application, and the communication device 500 may include a unit for executing a method performed by the terminal device in the method 200 in FIG. 2.
  • each unit in the communication device 500 and the other operations and / or functions described above are respectively for implementing a corresponding process of the method 200 in FIG. 2.
  • the transceiver unit 510 may be used to perform at least one of steps 2201, 2202, and 240 or 250 in the method 200, and the processing unit 520 may be used. Step 230 is performed in the method 200. It should be understood that the specific process for each unit to execute the above corresponding steps has been described in detail in the foregoing method embodiment, and for the sake of brevity, it will not be repeated here.
  • transceiver unit in the communication device 500 may correspond to the transceiver 602 in the terminal device 600 shown in FIG. 4, and the processing unit 520 in the communication device 500 may correspond to the terminal device shown in FIG. 4.
  • the processor 601 in 600 may correspond to the transceiver 602 in the terminal device 600 shown in FIG. 4, and the processing unit 520 in the communication device 500 may correspond to the terminal device shown in FIG. 4.
  • the processor 601 in 600 may correspond to the transceiver 602 in the terminal device 600 shown in FIG. 4
  • the communication device 500 may correspond to the network device in the foregoing method embodiment, for example, it may be a network device, or a chip configured in the network device.
  • the communication apparatus 500 may correspond to a network device in the method 200 according to the embodiment of the present application, and the communication apparatus 500 may include a unit for executing a method performed by the network device in the method 200 in FIG. 2.
  • each unit in the communication device 500 and the other operations and / or functions described above are respectively for implementing a corresponding process of the method 200 in FIG. 2.
  • the transceiver unit 510 may be used to perform at least one of steps 2201, 2202, and 240 or 250 in the method 300, and the processing unit 520 may be used. Step 210 of the method 200 is performed. It should be understood that the specific process for each unit to execute the above corresponding steps has been described in detail in the foregoing method embodiment, and for the sake of brevity, it will not be repeated here.
  • transceiver unit 510 in the communication device 500 may correspond to the transceiver 720 in the network device 700 shown in FIG. 5, and the processing unit 520 in the communication device 500 may correspond to the network shown in FIG. 5.
  • the processor 710 in the device 700 may correspond to the transceiver 720 in the network device 700 shown in FIG. 5, and the processing unit 520 in the communication device 500 may correspond to the network shown in FIG. 5.
  • FIG. 4 is a schematic structural diagram of a terminal device 600 according to an embodiment of the present application.
  • the terminal device 600 includes a processor 601 and a transceiver 602.
  • the terminal device 600 further includes a memory 603.
  • the processor 601, the transceiver 602, and the memory 603 can communicate with each other through an internal connection path to transfer control and / or data signals.
  • the memory 603 is used to store a computer program
  • the processor 601 is used to store the computer program
  • the computer program is called and executed to control the transceiver 602 to send and receive signals.
  • the terminal device 600 may further include an antenna 604 for sending uplink data or uplink control signaling output by the transceiver 602 through a wireless signal.
  • the processor 601 and the memory 603 may be combined into a processing device, and the processor 601 is configured to execute program codes stored in the memory 603 to implement the foregoing functions.
  • the memory 603 may also be integrated in the processor 601 or independent of the processor 601.
  • the processor 601 When the program instructions stored in the memory 603 are executed by the processor 601, the processor 601 is used to control the transceiver 602 to receive the DMRS sequence and data, and demodulate the data based on the DMRS sequence to obtain an estimated value of the data.
  • the DMRS sequence is related to a data transmission scheme.
  • the terminal device 600 may correspond to the terminal device in the method 200 according to the embodiment of the present application, and the terminal device 600 may include a unit for executing a method performed by the terminal device in the method 200 in FIG. 2.
  • each unit in the terminal device 600 and the other operations and / or functions described above are respectively to implement a corresponding process of the method 200 in FIG. 2.
  • the foregoing processor 601 may be used to perform the actions implemented in the terminal device described in the foregoing method embodiment, and the transceiver 602 may be used to execute the terminal device described in the foregoing method embodiment that is sent to or received from the network device by the terminal device. action.
  • the transceiver 602 may be used to execute the terminal device described in the foregoing method embodiment that is sent to or received from the network device by the terminal device. action.
  • the above-mentioned terminal device 600 may further include a power source 605 for supplying power to various devices or circuits in the terminal device.
  • the terminal device 600 may further include one or more of an input unit 606, a display unit 607, an audio circuit 608, a camera 609, and a sensor 610, and the audio circuit It may also include a speaker 6082, a microphone 6084, and the like.
  • FIG. 5 is a schematic structural diagram of a network device 700 according to an embodiment of the present application.
  • the network device 700 includes a processor 710 and a transceiver 720.
  • the network device 700 further includes a memory 730.
  • the processor 710, the transceiver 720, and the memory 730 communicate with each other through an internal connection path, and transfer control and / or data signals.
  • the memory 730 is used to store a computer program, and the processor 710 is used to call from the memory 730.
  • the computer program is run to control the transceiver 720 to send and receive signals.
  • the processor 710 and the memory 730 may be combined into a processing device, and the processor 710 is configured to execute program codes stored in the memory 730 to implement the foregoing functions.
  • the memory 730 may also be integrated in the processor 710, or be independent of the processor 710.
  • the above network device 700 may further include an antenna 740 for sending downlink data or downlink control signaling output by the transceiver 720 through a wireless signal.
  • the processor 710 When the program instructions stored in the memory 730 are executed by the processor 710, the processor 710 is configured to generate a DMRS and control the transceiver 720 to transmit the DMRS and data.
  • the DMRS sequence is related to a data transmission scheme.
  • the network device 700 may correspond to the network device in the method 200 according to the embodiment of the present application, and the network device 700 may include a unit for executing a method performed by the network device in the method 200 in FIG. 2.
  • each unit in the network device 700 and the other operations and / or functions described above respectively implement a corresponding process of the method 200 in FIG. 2.
  • the specific process of each unit performing the corresponding steps has been described in detail in the foregoing method embodiment. For brevity, I will not repeat them here.
  • the foregoing processor 710 may be configured to perform the actions implemented by the network device described in the foregoing method embodiment, and the transceiver 720 may be configured to perform the network device described in the foregoing method embodiment to send or receive from the terminal device to the terminal device. action.
  • the transceiver 720 may be configured to perform the network device described in the foregoing method embodiment to send or receive from the terminal device to the terminal device. action.
  • processors in the embodiment of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and application-specific integrated circuits. (application specific integrated circuit (ASIC)), ready-made programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • CPU central processing unit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • FPGA field programmable gate array
  • 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 may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrical memory Erase programmable read-only memory (EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • SDRAM synchronous dynamic random access Access memory
  • double SDRAM double SDRAM
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • enhanced SDRAM enhanced SDRAM
  • SLDRAM synchronous connection dynamic random access memory Fetch memory
  • direct RAMbus RAM direct RAMbus RAM, DR RAM
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on the computer, the computer executes the embodiment shown in FIG. Method.
  • the present application further provides a computer-readable medium, where the computer-readable medium stores program code, and when the program code is run on the computer, the computer executes the embodiment shown in FIG. 2 Method.
  • the present application further provides a system, which includes the foregoing one or more terminal devices and one or more network devices.
  • the disclosed systems, devices, and methods may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the unit is only a logical function division.
  • multiple units or components may be combined or 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, which may be 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, may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objective of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each of the units may exist separately physically, or two or more units may be integrated into one unit.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of this application is essentially a part that contributes to the existing technology or a part of the technical solution can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiments of the present application.
  • the aforementioned storage media include: U disks, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks or compact discs and other media that can store program codes .

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Abstract

本申请提供了一种接收和发送数据的方法以及通信装置，能够便于终端设备解调数据。该方法包括：终端设备接收来自网络设备的DMRS序列和数据，该DMRS序列与数据的传输方案相关；终端设备基于该DMRS序列解调数据，以得到该数据的估计值。其中，该DMRS序列与传输方案的对应关系可包括：用于生成DMRS序列的初始值的参数集与传输方案对应，和/或，用于生成DMRS序列的初始值的生成式与传输方案对应。

Description

接收和发送数据的方法以及通信装置
本申请要求于2018年7月27日提交中国专利局、申请号为201810840689.7、申请名称为“接收和发送数据的方法以及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信领域，并且更具体地，涉及接收和发送数据的方法以及通信装置。
背景技术
目前，多用户多输入多输出(multi-user multi-input multi-output，MU-MIMO)能够支持网络设备与多个终端设备之间使用相同的时频资源传输不同的数据。但是，当网络设备使用相同的时频资源与多个终端设备传输数据时，终端设备之间可能会相互干扰。例如，本小区的终端设备可能受到邻小区的终端设备的传输带来的干扰，同一小区的终端设备之间也可能相互干扰。为了获得较好的信号接收质量，终端设备需要进行干扰估计。
然而，随着多天线技术的发展，为了适应不同的信道环境，已经有多种传输方案被提出。因此，希望提供一种方法，便于终端设备在不同的传输方案下解调数据。
发明内容
本申请提供一种接收和发送数据的方法以及通信装置，以期降低解调的复杂度。
第一方面，提供了一种接收数据的方法。该方法包括：接收解调参考信号(demodulation reference signal，DMRS)序列和数据，该DMRS序列与数据的传输方案相关；基于该DMRS序列解调数据，以得到该数据的估计值。
第一方面提供的方法可以由终端设备执行，也可以由配置于终端设备中的芯片执行，本申请对此不做限定。
基于上述技术方案，由于DMRS序列与数据的传输方案相关，可以将DMRS序列和传输方案建立对应关系。终端设备在确定了DMRS序列的同时，便可以根据DMRS序列与传输方案的对应关系，确定数据的传输方案，从而便于解调数据。并且，终端设备接收到的发给自身的DMRS序列(例如记作第一DMRS序列)和数据(例如记作第一数据)的传输方案对应，终端设备接收到的干扰的DMRS序列(例如记作第二DMRS序列)和数据(例如记作第二数据)的传输方案也对应。由此，终端设备可以根据DMRS序列与传输方案的对应关系，基于假设的传输方案生成第二DMRS序列，并将其与接收到的信号做相关，以确定是否受到干扰，并可在确定受到干扰的情况下，进一步确定第二数据的传输方案。从而便于终端设备基于第二数据的传输方案和第二DMRS序列进行干扰估计，便于解调数据。
相反，如果终端设备不能预先确定第二数据的传输方案，就需要遍历各种可能的传输 方案去盲检测，基于不同的传输方案重复地尝试数据解调，直到解调成功才得以完成该第一数据的解调。假设有N种传输方案，终端设备可能就要重复地尝试N次数据解调，才能最终把第一数据恢复出来，计算量非常大。
但如果终端设备可以预先确定第二数据的传输方案，就可以直接根据第二数据的传输方案和第二DMRS序列去做干扰估计，进而基于第一DMRS序列和干扰估计得到的干扰噪声协方差矩阵解调出第一数据，从而可以大大降低终端设备干扰估计的复杂度，降低解调复杂度。
结合第一方面，在第一方面的某些实现方式中，用于生成DMRS序列的初始值的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000001
的至少一个组合与至少一种传输方案对应。
该对应关系可以是全局配置的，也可以是小区级别配置的，还可以是用户设备(user equipment，UE)组(group)级别配置的，还可以是UE级别配置的，本申请对此不作限定。另外，该对应关系可以是预先定义的，如协议定义，也可以是网络设备配置的。本申请对此不作限定。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：接收第一指示信息，该第一指示信息用于指示第一映射关系，该第一映射关系包括以下任意一项：至少一个扰码标识n SCID与至少一种传输方案的对应关系；或至少一个序列标识
Figure PCTCN2019097934-appb-000002
与至少一种传输方案的对应关系；或扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000003
的至少一个组合与至少一种传输方案的对应关系。
在本申请实施例中，可以将用于生成一个DMRS序列的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000004
称为一组参数集。当DMRS序列与传输方案对应时，该参数集与传输方案对应。
由于DMRS序列的初始值与扰码标识n SCID、序列标识
Figure PCTCN2019097934-appb-000005
相关，而扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000006
的对应关系可以通过已有的无线资源控制(radio resource control，RRC)消息预先配置，因此，当扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000007
中的一项与传输方案对应时，另一项也与传输方案对应。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：接收第二指示信息，该第二指示信息用于指示用于生成DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000008
因此，网络设备可以不再需要发送单独的信令来指示数据的传输方案，在指示用于生成DMRS序列的初始值的参数的同时，就已经隐式地指示了数据的传输方案，从而可以节省信令开销。
进一步地，该方法还包括：终端设备根据第二指示信息确定数据的传输方案。
因此，终端设备可以直接根据第二指示信息所指示的用于生成DMRS序列的初始值的参数以及上述至少一个参数集与至少一种传输方案的对应关系，确定数据的传输方案。
结合第一方面，在第一方面的某些实现方式中，用于生成DMRS序列的初始值的至少一个生成式与至少一种传输方案对应。
该对应关系可以是全局配置的，也可以是小区级别配置的，还可以是UE group级别配置的，还可以是UE级别配置的，本申请对此不作限定。另外，该对应关系可以是预先定义的，如协议定义，也可以是网络设备配置的。本申请对此不作限定。
结合第一方面，在第一方面的某些实现方式中，该方法还包括：接收第三指示信息， 所述第三指示信息用于指示所述DMRS序列的初始值的生成式。
因此，网络设备可以不再需要发送单独的信令来指示数据的传输方案，在指示用于生成DMRS序列的初始值的生成式的同时，就已经隐式地指示了数据的传输方案，从而可以节省信令开销。
进一步地，该方法还包括：基于该第三指示信息确定数据的传输方案。
因此，终端设备可以直接根据第三指示信息所指示的用于生成DMRS序列的参数以及上述至少一个生成式与至少一种传输方案的对应关系，确定数据的传输方案。
第二方面，提供了一种发送数据的方法。该方法包括：生成DMRS序列，该DMRS序列与数据的传输方案相关；发送该DMRS序列和数据。
第二方面提供的方法可以由网络设备执行，也可以由配置于网络设备中的芯片执行，本申请对此不做限定。
基于上述技术方案，由于DMRS序列与数据的传输方案相关，可以将DMRS序列和传输方案建立对应关系。网络设备可以根据DMRS序列与数据的传输方案的对应关系，生成与数据的传输方案对应的DMRS序列。终端设备在确定了DMRS序列的同时，便可以根据DMRS序列与传输方案的对应关系，确定数据的传输方案，从而便于解调数据。并且，终端设备接收到的发给自身的DMRS序列(例如记作第一DMRS序列)和数据(例如记作第一数据)的传输方案对应，终端设备接收到的干扰的DMRS序列(例如记作第二DMRS序列)和数据(例如记作第二数据)的传输方案也对应。由此，终端设备可以根据DMRS序列与传输方案的对应关系，基于假设的传输方案生成第二DMRS序列，并将其与接收到的信号做相关，以确定是否受到干扰，并可在确定受到干扰的情况下，进一步确定第二数据的传输方案。从而便于终端设备基于第二数据的传输方案和第二DMRS序列进行干扰估计，便于解调数据。
相反，如果终端设备不能预先确定第二数据的传输方案，就需要遍历各种可能的传输方案去盲检测，基于不同的传输方案重复地尝试数据解调，直到解调成功才得以完成该第一数据的解调。假设有N种传输方案，终端设备可能就要重复地尝试N次数据解调，才能最终把第一数据恢复出来，计算量非常大。
但如果终端设备可以预先确定第二数据的传输方案，就可以直接根据第二数据的传输方案和第二DMRS序列去做干扰估计，进而基于第一DMRS序列和干扰估计得到的干扰噪声协方差矩阵解调出第一数据，从而可以大大降低终端设备干扰估计的复杂度，降低解调复杂度。
结合第二方面，在第二方面的某些实现方式中，用于生成DMRS序列的初始值的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000009
的至少一个组合与至少一种传输方案对应。
该对应关系可以是全局配置的，也可以是小区级别配置的，还可以是UE group级别配置的，还可以是UE级别配置的，本申请对此不作限定。另外，该对应关系可以是预先定义的，如协议定义，也可以是网络设备配置的。本申请对此不作限定。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：发送第一指示信息，该第一指示信息用于指示第一映射关系，其中，该第一映射关系包括以下任意一项：至少一个扰码标识n SCID与至少一种传输方案的对应关系；或至少一个序列标识
Figure PCTCN2019097934-appb-000010
与至少一种传输方案的对应关系；或扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000011
的至少一个组合与至少一种传 输方案的对应关系。
在本申请实施例中，可以将用于生成一个DMRS序列的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000012
称为一组参数集。当DMRS序列与传输方案对应时，该参数集与传输方案对应。
由于DMRS序列的初始值与扰码标识n SCID、序列标识
Figure PCTCN2019097934-appb-000013
相关，而扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000014
的对应关系可以通过已有的无线资源控制(radio resource control，RRC)消息预先配置，因此，当扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000015
中的一项与传输方案对应时，另一项也与传输方案对应。
可选地，网络设备生成DMRS序列，包括：网络设备根据至少一个参数集与至少一种传输方案的对应关系，确定用于生成该DMRS序列的参数集，并基于该参数集生成DMRS序列。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：发送第二指示信息，该第二指示信息用于指示用于生成DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000016
因此，网络设备可以不再需要发送单独的信令来指示数据的传输方案，在指示用于生成DMRS序列的初始值的参数的同时，就已经隐式地指示了数据的传输方案，从而可以节省信令开销。
结合第二方面，在第二方面的某些实现方式中，用于生成DMRS序列的初始值的至少一个生成式与至少一种传输方案对应。
该对应关系可以是全局配置的，也可以是小区级别配置的，还可以是UE group级别配置的，还可以是UE级别配置的，本申请对此不作限定。另外，该对应关系可以是预先定义的，如协议定义，也可以是网络设备配置的。本申请对此不作限定。
可选地，网络设备生成DMRS序列，包括：网络设备根据至少一个生成式与至少一种传输方案的对应关系，确定用于生成该DMRS序列的生成式，并基于该生成式生成DMRS序列。
结合第二方面，在第二方面的某些实现方式中，该方法还包括：发送第三指示信息，该第三指示信息用于指示DMRS序列的初始值的生成式。
因此，网络设备可以不再需要发送单独的信令来指示数据的传输方案，在指示用于生成DMRS序列的初始值的生成式的同时，就已经隐式地指示了数据的传输方案，从而可以节省信令开销。
第三方面，提供了一种通信装置，包括用于执行第一方面或第一方面中任一种可能实现方式中的方法的各个模块或单元。
第四方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面或第一方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为终端设备。当该通信装置为终端设备时，所述通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于终端设备中的芯片。当该通信装置为配置于终端设备中的芯片时，所述通信接口可以是输入/输出接口。
可选地，所述收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
第五方面，提供了一种通信装置，包括用于执行第二方面或第二方面中任一种可能实现方式中的方法的各个模块或单元。
第六方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第二方面或第二方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为网络设备。当该通信装置为网络设备时，所述通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于网络设备中的芯片。当该通信装置为配置于网络设备中的芯片时，所述通信接口可以是输入/输出接口。
可选地，所述收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
第七方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。所述处理电路用于通过所述输入电路接收信号，并通过所述输出电路发射信号，使得所述处理器执行第一方面或第二方面以及第一方面或第二方面任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第八方面，提供了一种处理装置，包括处理器和存储器。该处理器用于读取存储器中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行第一方面或第二方面以及第一方面或第二方面任一种可能实现方式中的方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
应理解，相关的数据交互过程例如发送指示信息可以为从处理器输出指示信息的过程，接收能力信息可以为处理器接收输入能力信息的过程。具体地，处理输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。
上述第八方面中的处理装置可以是一个芯片。处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来 实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
第九方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述第一方面或第二方面以及第一方面或第二方面中任一种可能实现方式中的方法。
第十方面，提供了一种计算机可读介质，所述计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面或第二方面以及第一方面或第二方面中任一种可能实现方式中的方法。
第十一方面，提供了一种通信系统，包括前述的网络设备和终端设备。
附图说明
图1是适用于本申请实施例的通信系统的示意图；
图2是本申请实施例提供的接收和发送数据的方法的示意性流程图；
图3是本申请实施例提供的通信装置的示意性框图；
图4是本申请实施例提供的终端设备的结构示意图；
图5是本申请实施例提供的网络设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、未来的第五代(5th generation，5G)系统或新无线(new radio，NR)等。
为便于理解本申请实施例，首先以图1中示出的通信系统为例详细说明适用于本申请实施例的通信系统。图1是适用于本申请实施例的无线通信系统100的示意图。如图所示，该无线通信系统100可以包括至少一个网络设备，例如图1所示的网络设备111和网络设备112，该无线通信系统100还可以包括至少一个终端设备，例如图1所示的终端设备121至终端设备123。网络设备和终端设备均可配置多个天线，网络设备与终端设备可使用多天线技术通信。
可选地，网络设备111可以是小区#1中的网络设备，或者说，网络设备111可以为小区#1中的终端设备(例如终端设备121)服务。网络设备112可以是小区#2中的网络设备，或者说，网络设备112可以为小区#2中的终端设备(例如终端设备122)服务。
需要说明的是，小区可以理解为网络设备的服务小区，也就是网络设备的无线网络的覆盖范围内的区域。在本申请中，小区#1中的网络设备111和小区#2中的网络设备112可以是不同的网络设备，例如，基站。也就是说，小区#1和小区#2可以由不同的基站来 管理。小区#1中的网络设备111和小区#2中的网络设备112也可以是同一基站的不同的射频处理单元，例如，射频拉远单元(radio remote unit，RRU)，也就是说，小区#1和小区#2可以由同一基站管理，具有相同的基带处理单元和中频处理单元，但具有不同的射频处理单元。本申请对此不做特别限定。
应理解，该无线通信系统中的网络设备可以是任意一种具有无线收发功能的设备。该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(radio network controller，RNC)、节点B(Node B，NB)、基站控制器(base station controller，BSC)、基站收发台(base transceiver station，BTS)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)、基带单元(baseband unit，BBU)，无线保真(wireless fidelity，WIFI)系统中的接入点(access point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(transmission and reception point，TRP)等，还可以为5G，如，NR，系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括射频单元(radio unit，RU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能，DU实现无线链路控制(radio link control，RLC)、媒体接入控制(media access control，MAC)和物理(physical，PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令，也可以认为是由DU发送的，或者，由DU+CU发送的。可以理解的是，网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外，CU可以划分为接入网(radio access network，RAN)中的网络设备，也可以将CU划分为核心网(core network，CN)中的网络设备，本申请对此不做限定。
还应理解，该无线通信系统中的终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。
以下行传输为例，在同一小区中，网络设备可以使用相同的时频资源与多个终端设备通信。例如，在小区#1中，网络设备111可以使用相同的时频资源与终端设备121和终端设备122通信。在相邻的两个小区中，网络设备也可以使用相同的时频资源与多个终端设备通信。例如，在小区#1中，网络设备111与终端设备122通信所使用的时频资源与网络设备112与终端设备123通信所使用的时频资源相同，网络设备111与终端设备122 通信所使用的时频资源还可以与网络设备111与终端设备121通信所使用的时频资源相同。
以终端设备122接收下行数据为例，终端设备122在接收网络设备111发送的数据时，可能会受到终端设备121和终端设备123的干扰。因此终端设备122需要进行干扰估计，从而将网络设备111发送给自己的数据准确解调出来。
然而，随着多天线技术的发展，目前已有多种传输方案被提出。例如，闭环空分复用(closed loop spatial multiplexing，CLSM)、发射分集(transmit diversity，TD)等。其中，闭环空分复用在NR协议中可以称为传输方案1(transmission scheme 1，TS1)。发射分集具体可包括但不限于：空频发射分集(space frequency transmit diversity，SFTD，或者称，空频分组编码(space frequency block coding，SFBC))、空时发射分集(space time transmit diversity，STTD，或者称，空时分组编码(space time block coding，STBC))、RE级预编码轮询等。
由于在不同的传输方案下，网络设备对信号的处理方式不同，终端设备122构造的干扰估计协方差矩阵可能会有不同。终端设备122在进行干扰估计时，若不能预先知道终端设备121和终端设备123数据传输使用的传输方案，就可能需要通过盲检的方式遍历各种传输方案来进行干扰估计和解调，这大大增加了干扰估计和解调的复杂度。
有鉴于此，本申请提供一种接收和发送数据的方法，能够降低干扰估计和解调的复杂度。
为方便区分和说明，在以下示出的实施例中，将终端设备分为第一终端设备和第二终端设备。其中，第一终端设备和第二终端设备均可以接收到来自网络设备的数据。第一终端设备在接收来自网络设备的数据时，可能受到发送给第二终端设备的信号的干扰；第二终端设备在接收来自网络设备的数据时，也可能受到发送给第一终端设备的信号的干扰。第一终端设备和第二终端设备可以是同一小区的终端设备，也可以是不同小区的终端设备。可以理解，第一终端设备和第二终端设备是相对而言的。如，图1中的终端设备121为第一终端设备，则终端设备122可以为第二终端设备；图1中的终端设备122为第一终端设备，则终端设备121和123可以为第二终端设备。
为便于理解本申请，在介绍本申请实施例之前，先对本申请中涉及到的几个概念做简单介绍。
1、资源粒子(resource element，RE)：或者称，资源元素。在时域上可以占用一个符号，在频域上可以占用一个子载波。
2、资源块(resource block，RB)：一个RB在频域上占用
Figure PCTCN2019097934-appb-000017
个连续的子载波，且在时域上占用
Figure PCTCN2019097934-appb-000018
个连续的符号。其中，
Figure PCTCN2019097934-appb-000019
均为正整数。例如，在LTE协议中，
Figure PCTCN2019097934-appb-000020
可以等于12，
Figure PCTCN2019097934-appb-000021
可以等于7；在NR协议中，
Figure PCTCN2019097934-appb-000022
可以等于12，
Figure PCTCN2019097934-appb-000023
可以等于14。在本申请实施例中，RB可以是资源单元的一例。
3、符号(symbol)：时域资源的最小单位。本申请实施例对一个符号的时间长度不做限制。针对不同的子载波间隔，一个符号的长度可以有所不同。符号可以包括上行符号和下行符号，作为示例而非限定，上行符号例如可以称为单载波频分多址(Single Carrier-Frequency Division Multiple Access，SC-FDMA)符号或正交频分多址(Orthogonal Frequency Division Multiplexing，OFDM)符号；下行符号例如可以称为OFDM符号。
4、资源单元：可用于作为资源在时频域占用的资源的计量单位。在本申请实施例中，资源单元例如可以包括RB、一个或多个RB构成的资源块组(RB group，RBG)、一个或多个RB对(RB pair)、半个RB、1/4个RB、一个或多个RE构成的RE组等。在NR协议中，一个RB可以是由频域上的12个连续的子载波和时域上的14个连续的符号组成。应理解，以上举例仅为示例性说明，不应对本申请构成任何限定。
5、时隙：在NR中，时隙为时间的最小调度单元。一种时隙的格式为包含14个OFDM符号，每个OFDM符号的CP为正常CP；一种时隙的格式为包含12个OFDM符号，每个OFDM符号的CP为扩展CP；一种时隙的格式为包含7个OFDM符号，每个OFDM符号的CP为正常CP。一个时隙中的OFDM符号可以全用于上行传输；可以全用于下行传输；也可以一部分用于下行传输，一部分用于上行传输，一部分预留不进行传输。应理解，以上举例仅为示例性说明，不应对本申请构成任何限定。出于系统前向兼容性考虑，时隙格式不限于以上示例。
6、传输方案：或者称传输方式，可以为LTE协议或NR协议中定义的transmission scheme。传输方案可用于表示传输数据所使用的技术方案。应理解，传输方案仅为一个命名，本申请并不排除在未来的协议中通过其他的命名来替代传输方案的可能。
7、空分复用：在无线信道质量较好，且信道矩阵的秩大于1的情况下，MIMO系统可以利用多根发射天线和多根接收天线来并行发送多路数据，且该并行发送的多路数据是不同的，从而可以提高数据传输的吞吐量。
8、闭环(closed loop)空分复用：在NR协议中也可称为传输方案1(transmission scheme1，TS1)。发射端在并行发射多个数据流的时候，可以根据下行信道的CSI，尤其是PMI和RI，确定相应的预编码矩阵，对待发送的多个数据流分别进行预编码后再发射出去。需要注意的是，闭环空分复用还包括只用一个天线端口发射一个数据流。
其中，下行信道的CSI可以是由接收端基于参考信号反馈；也可以是由发送端根据上下行信道的互易性，通过测量上行信道获取下行信道的CSI；还可以是通过将上下行信道互易性与接收端反馈相结合的方式获得。本申请对此不做限定。
9、发射分集：在无线信道质量较差，或接收端只有一根接收天线的情况下，MIMO系统可以利用多根发射天线并行发送多路相同的数据，从而可以提高数据传输的可靠性。其中，分集，即，将一路信号分成多路，在不同的时间、不同的频率或者不同的空间发送出去，接收端再集中进行合并。当一些信号发生深衰落时，另一些信号的衰落可能较轻，各路信号同时发生深衰落的概率较低，从而合成信号发生深衰落的概率被大大降低。换句话说，发射分集可理解为通过多个独立衰落的信号，来减小合成信号发生深衰落的概率，因此有利于获得分集增益。
多路信号在不同的时间进行发送的，可称为时间分集；多路信号在不同的频率进行发送的，可称为频率分集；多路信号在不同的空间进行发送的，可称为空间分集。
10、空频分组编码：结合了空间分集和频率分集，提出的一种空频发射分集的方案。调制后的符号流经过层映射和Alamouti编码，可得到至少两个符号流，然后对该至少两个符号流进行预编码后发送出去。
具体地，假设调制后的符号流为s 2、s 1，经过层映射，可映射到至少两个层上，层映 射后的符号流例如可表示为
Figure PCTCN2019097934-appb-000024
则对该两个符号流在空域和频域进行Alamouti编码后得到的两个符号流可以表示为
Figure PCTCN2019097934-appb-000025
也就是说，在第一个子载波上，第一根天线和第二根天线分别发送了s 1和s 2，在第二个子载波上，第一根天线和第二根天线分别发送了
Figure PCTCN2019097934-appb-000026
和
Figure PCTCN2019097934-appb-000027
与此对应地，第一个子载波上，可假设接收端收到了信号r 1，在第二个子载波上，可假设接收端收到了信号r 2，接收端可基于接收到的信号r 1和r 2来确定s 1和s 2。
可选地，上述发射分集操作后得到的两个符号流还可以表示为
Figure PCTCN2019097934-appb-000028
即，在第一个子载波上，第一根天线和第二根天线分别发送了s 1和
Figure PCTCN2019097934-appb-000029
在第二个子载波上，第一根天线和第二根天线分别发送了s 2和
Figure PCTCN2019097934-appb-000030
11、空时分组编码：结合了空间分集和时间分集而提出的一种空时发射分集的方案。与空频分组编码相似地，调制后的符号流经过层映射和Alamouti编码，可得到至少两个符号流，然后对该至少两个符号流进行预编码后发送出去。
假设进行层映射和Alamouti编码后得到的符号流为
Figure PCTCN2019097934-appb-000031
则发送端可以在第一个符号上，通过第一根天线和第二根天线分别发送s 1和s 2，在第二个符号上，通过第一根天线和第二根天线分别发送
Figure PCTCN2019097934-appb-000032
和
Figure PCTCN2019097934-appb-000033
与此对应地，第一个符号上，可假设接收端收到了信号r 1，在第二个符号上，可假设接收端收到了信号r 2，接收端可基于接收到的信号r 1和r 2来确定s 1和s 2。
可选地，上述发射分集操作后得到的两个符号流还可以表示为
Figure PCTCN2019097934-appb-000034
即，在第一个时间单元上，第一根天线和第二根天线分别发送了s 1和
Figure PCTCN2019097934-appb-000035
在第二个时间单元上，第一根天线和第二根天线分别发送了s 2和
Figure PCTCN2019097934-appb-000036
12、端口：或者称天线端口。可以理解为被接收端所识别的发射天线，或者在空间上可以区分的发射天线。针对每个虚拟天线可以配置一个天线端口，每个虚拟天线可以为多个物理天线的加权组合。根据所承载的信号的不同，天线端口可以分为参考信号端口和数据端口。其中，参考信号端口例如包括但不限于，DMRS端口、CSI-RS端口等。
13、解调参考信号：可用于解调数据或信令的参考信号。根据传输方向的不同，可分为上行解调参考信号和下行解调参考信号。解调参考信号可以为LTE协议或NR协议中的DMRS，或者也可以为未来协议中定义的其他用于实现相同或相似功能的参考信号。本申请对此不做限定。
在LTE或NR协议中，DMRS可以承载在物理共享信道中与数据信号一起发送，以用于对物理共享信道中承载的数据信号进行解调。如，在物理下行共享信道(physical downlink share channel，PDSCH)中与下行数据一起发送，或者，在物理上行共享信道(physical uplink share channel，PUSCH)中与上行数据一起发送。DMRS还可以承载在物理控制信道中与控制信令一起发送，以用于对物理控制信道汇总承载的控制信令进行解 调。如，在物理下行控制信道(physical downlink control channel，PDCCH)中与下行控制信令一起发送，或者，在物理上行控制信道(physical uplink control channel，PUCCH)中与上行控制信令一起发送。
在本申请实施例中，解调参考信号可包括通过PDCCH或PDSCH发送的下行解调参考信号，也可包括通过PUCCH或PUSCH发送的上行解调参考信号。下文中为方便说明，将解调参考信号简称为DMRS。
在LTE和NR协议中，DMRS可采用伪随机(pseudo-noise，PN)序列，因此，DMRS也可以称为DMRS序列。在本申请实施例中，“DMRS”和“DMRS序列”交替使用，但本领域的技术人员可以理解，在不强调其区别时，其所要表达的含义是一致的。
DMRS序列可以由承载于多个RE上的调制符号构成，每个调制符号例如可以是一个正交相移键控(Quadrature Phase Shift Keying，QPSK)符号。其中，第n个子载波上承载的DMRS序列的调制符号r(n)可以由下文所示的公式一获得：
Figure PCTCN2019097934-appb-000037
其中，r(n)所呈现的形式是PN序列通过调制得到的复数形式，例如可表示一个QPSK符号。n表示组分载波(component carrier，CC)中DMRS占用的子载波中的第n个子载波。
Figure PCTCN2019097934-appb-000038
d表示一个RB内、一个OFDM符号上的DMRS的密度(density)，
Figure PCTCN2019097934-appb-000039
可表示一个CC中包含的RB数。c(i)表示由初始值c init定义的PN序列。
初始值c init可以进一步由下文所示的公式二获得：
Figure PCTCN2019097934-appb-000040
其中，l表示一个时隙内的第l个符号，
Figure PCTCN2019097934-appb-000041
表示一个帧内的时隙数，
Figure PCTCN2019097934-appb-000042
表示一个时隙内的符号数。序列标识
Figure PCTCN2019097934-appb-000043
可以用于生成DMRS序列的初始值c init。扰码标识n SCID可用于指示DMRS序列扰码生成信息。
在NR中，n SCID可通过下行控制信息(downlink control information，DCI)指示，
Figure PCTCN2019097934-appb-000044
可通过高层参数指示。例如，当终端设备接收到格式(format)1_1的DCI时，该DCI中可包括用于指示该n SCID的取值的指示域。在NR中，该n SCID的取值可以为0或1，且可用于下行传输；DMRS下行配置(DMRS-DownlinkConfig)信息元素(information element，IE)中的高层参数扰码标识0(scramblingID0)和扰码标识(scramblingID1)可配置n SCID的取值分别为0或1时
Figure PCTCN2019097934-appb-000045
的值。在NR中，
Figure PCTCN2019097934-appb-000046
又例如，当终端设备接收到format 1_0的DCI时，可以隐式地指示该n SCID的取值为0，且该n SCID可用于下行传输。DMRS-DownlinkConfig IE中的高层参数scramblingID0可配置n SCID的取值为0时
Figure PCTCN2019097934-appb-000047
的值。在NR中，
Figure PCTCN2019097934-appb-000048
再例如，当终端设备接收到format 0_1的DCI时，可以确定用于上行传输的n SCID的取值为0或1，高层参数可分别配置n SCID的取值分别为0或1时
Figure PCTCN2019097934-appb-000049
的值。在NR中，
Figure PCTCN2019097934-appb-000050
还例如，当终端设备接收到format 0_0的DCI时，可以确定用于上行传输的n SCID的取值为0，高层参数可配置n SCID的取值为0时
Figure PCTCN2019097934-appb-000051
的值。在NR中，
Figure PCTCN2019097934-appb-000052
当终端设备未接收到上述列举的DCI时，则可默认为
Figure PCTCN2019097934-appb-000053
的值为小区标识
Figure PCTCN2019097934-appb-000054
可以看到，n SCID和
Figure PCTCN2019097934-appb-000055
在大多数情况下是UE级别(UE specific)的，给不同的终端设备发送的DMRS使用的n SCID和
Figure PCTCN2019097934-appb-000056
可能是相同的，也可能是不同的。
在下文示出的实施例中，为方便说明，将用于确定初始值c init的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000057
简称为一个参数集，一个参数集可以包括一个扰码标识n SCID和一个序列标识
Figure PCTCN2019097934-appb-000058
简称的组合。一个参数集中的扰码标识n SCID和序列标识可用于确定一个初始值c init。
此外，为了便于理解本申请实施例，作出以下几点说明。
第一，在本申请实施例中，为便于描述，一个资源单元在时域上包括的符号从#0开始连续编号，且在频域上包括的子载波从#0开始编号。以一个资源单元是一个RB为例，则该RB在时域上例如可以包括符号#0～符号#13，在频域上例如可以包括子载波#0～子载波#11。并且，为便于理解，下文描述中的第i(i≥0，且i为整数)个符号(或子载波)中的i与符号(或子载波)的编号(index)对应，例如，第0个符号，对应于编号为0的符号，即符号#0。
应理解，上文所述均为便于描述本申请实施例提供的技术方案而进行的设置，而并非用于限制本申请的范围，具体实现时并不限于此。例如，一个资源单元在时域上可以包括符号#1～符号#14，在频域上可以包括子载波#1～子载波#12。
第二，在本申请实施例中，涉及多种矩阵的变换。为便于理解，这里对本申请中涉及的几种矩阵的变换统一说明。上角标H表示共轭转置，如，A H表示矩阵(或向量)A的共轭转置；上角标*表示共轭，如，B *表示矩阵(或向量)B的共轭；～表示估计值，如，
Figure PCTCN2019097934-appb-000059
表示矩阵(或向量)C的估计值。后文中为了简洁，省略对相同或相似情况的说明。
第三，在本申请实施例中，“DMRS”和“DMRS序列”可以交替使用，在不强调其区别时，其所要表达的含义是一致的。
第四，在下文示出的实施例中，第一、第二、第三仅为便于区分不同的对象，而不应对本申请构成任何限定。例如，区分不同的终端设备、不同的DMRS、不同的指示信息等。
第五，在下文示出的实施例中，“预先获取”可包括由网络设备信令指示或者预先定义，例如，协议定义。其中，“预先定义”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。
第六，本申请实施例中涉及的“保存”，可以是指的保存在一个或者多个存储器中。所述一个或者多个存储器，可以是单独的设置，也可以是集成在编码器或者译码器，处理器、或通信装置中。所述一个或者多个存储器，也可以是一部分单独设置，一部分集成在译码器、处理器、或通信装置中。存储器的类型可以是任意形式的存储介质，本申请并不对此限定。
第七，本申请实施例中涉及的“协议”可以是指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
第八，“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。字符“/”一般表示前后关联对象是一种“或”的关系。“至少一个”是指一个或一个以上；“A和B中的至少一个”，类似于“A和/或B”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和B中的至少一个，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。
下面将结合附图详细说明本申请实施例。
应理解，本申请的技术方案可以应用于无线通信系统中的下行传输。该无线通信系统可包括至少一个网络设备和至少两个终端设备。例如，该无线通信系统可以为图1中所示的通信系统100。当网络设备111使用相同的时频资源分别向终端设备121和终端设备122发送下行数据时，该终端设备121和终端设备122之间可能会相互干扰；又例如，当网络设备111向终端设备121发送下行数据的时频资源与网络设备112向终端设备123发送下行数据的时频资源相同时，终端设备121和终端设备123之间可能会相互干扰。
以下，不失一般性，以第一终端设备和网络设备的交互为例，详细说明本申请实施例的接收和发送数据的方法。
图3是从设备交互的角度示出的本申请实施例提供的接收和发送数据的方法200的示意性流程图。如图所示，该方法200可包括步骤210至步骤250。下面对方法200做详细说明。
在步骤210中，网络设备生成DMRS序列，该DMRS序列与数据的传输方案相关。
在本实施例中，为方便区分和说明，可以将网络设备生成并发送给第一终端设备的DRMS序列记作第一DMRS序列，网络设备生成并发送给第一终端设备的数据记作第一数据；与此相应地，可以将网络设备生成并发送给第二终端设备的DMRS序列记作第二DMRS序列，网络设备生成并发送给第二终端设备的数据记作第二数据。
具体地，DMRS序列与数据的传输方案相关。即，第一DMRS序列与第一数据的传输方案相关，第二DMRS序列与第二数据的传输方案相关。
如前所述，在LTE或NR中，DMRS序列中的各调制符号r(n)均可以由初始值c init确定，而初始值可以由上文所列出的公式二确定。在初始值一定的情况下，DMRS序列中的各调制符号r(n)可以是确定的。因此，当DMRS序列与数据的传输方案相关时，该初始值也可以与数据的传输方案相关。
再看公式二，初始值可以与扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000060
相关。当用于计算初始值的参数集中的任意一项参数不同时，即，扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000061
中任意一项不同，计算所得的初始值就可能不同。另外，当初始值的生成式改变时，基于相同的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000062
计算所得的初始值也可能不同。
当DMRS序列与数据的传输方案相关时，用于生成该DMRS序列的初始值的参数集可以与传输方案具有对应关系；或者，用于生成该DMRS序列的初始值的生成式可以与传输方案相关；或者，用于生成该DMRS序列的初始值的参数集和生成式均可以与传输方案相关。当协议默认将DMRS序列与传输方案的关系定义为下文列举的某一种情况时，网络设备和终端设备均可以基于相应的方式生成DMRS序列。
需要注意的是，上文所列举的DMRS序列与数据的传输方案的对应关系可以是全局的，如，协议定义通信系统中的所有的通信装置均可以遵循相同的对应关系；该DMRS序列与数据的传输方案的对应关系也可以是UE组(UE group)级别的，即，同一个UE group中的所有的终端设备均可以遵循相同的对应关系，且该UE group所包含的终端设备可以是由网络设备预先配置；该DMRS序列与数据的传输方案的对应关系也可以是小区级别的，即，同一小区中的所有的通信装置均可以遵循相同的对应关系；该DMRS序列与数据的传输方案的对应关系还可以是UE级别的，即，对每个终端设备分别配置对应关系。
该DMRS序列与数据的传输方案的对应关系可以是预先定义的，如协议定义，网络设备和终端设备均可以预先保存该对应关系；该DMRS序列与数据的传输方案的对应关系也可以是网络设备配置给终端设备的。当该对应关系由网络设备配置且为全局或UE组级别时，通信系统中的所有的网络设备可以配置相同的对应关系，例如可通过算法实现。
下面将分别结合上述三种可能的情况来说明网络设备生成DMRS的具体过程。
情况一、用于生成DMRS序列的初始值的参数集与传输方案对应：
具体地，协议可默认每种传输方案对应一组或多组专用的参数集，当网络设备确定了该参数集中的参数，便可以基于该参数集中的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000063
生成DMRS序列。因此，在步骤210之前，可选地，该方法200还包括：网络设备确定与传输方案对应的参数集。网络设备可以通过以下几种实现方式来确定与传输方案对应的参数集：
实现方式1、该扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000064
的组合与传输方案的对应关系可以是预定义的，如协议定义。
具体地，协议可预先定义至少一组参数集与至少一种传输方案的对应关系，每种传输方案可对应一组或多组参数集，每组参数集包括一个扰码标识n SCID及对应的序列标识
Figure PCTCN2019097934-appb-000065
在这种实现方式中，网络设备可根据协议定义的至少一组参数集与至少一种传输方案的对应关系来确定用于数据传输的传输方案所对应的参数集。
实现方式2、该扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000066
的组合与传输方案的对应关系可以是由网络设备配置的。
具体地，网络设备可以预先确定至少一组参数集与至少一种传输方案的对应关系，并可根据该至少一组参数集与至少一种传输方案的对应关系，确定用于数据传输的传输方案所对应的参数集。
实现方式3、该扰码标识n SCID与传输方案的对应关系可以由协议定义或者网络设备配置，扰码标识n SCID与序列标识
Figure PCTCN2019097934-appb-000067
的对应关系可以由网络设备配置。
具体地，协议可预先定义至少一个扰码标识n SCID与至少一种传输方案的对应关系，或者，网络设备可预先配置至少一个扰码标识n SCID与至少一种传输方案的对应关系，每种传输方案可对应一个或多个扰码标识n SCID。此外，网络设备可预先通过高层信令配置与扰码标识n SCID对应的序列标识
Figure PCTCN2019097934-appb-000068
例如，可通过已有的RRC消息配置。
网络设备可以根据协议所定义的至少一个扰码标识n SCID与至少一种传输方案的对应关系，以及自身所确定各扰码标识n SCID对应的序列标识
Figure PCTCN2019097934-appb-000069
确定用于数据传输的传输方案所对应的参数集。
实现方式4、该序列标识
Figure PCTCN2019097934-appb-000070
与传输方案的对应关系可以由协议定义或者网络设备配置，扰码标识n SCID与序列标识
Figure PCTCN2019097934-appb-000071
的对应关系可以由网络设备确定。
具体地，协议可预先定义至少一个序列标识
Figure PCTCN2019097934-appb-000072
与至少一种传输方案的对应关系，或者，网络设备可预先配置至少一个序列标识
Figure PCTCN2019097934-appb-000073
与至少一种传输方案的对应关系，每种传输方案可对应一个或多个序列标识
Figure PCTCN2019097934-appb-000074
此外，网络设备还可预先通过高层信令配置与扰码标识n SCID对应的序列标识
Figure PCTCN2019097934-appb-000075
例如，可通过已有的RRC消息配置。
网络设备可以根据协议所对应的至少一个序列标识与至少一种传输方案的对应关系，以及自身所确定的各扰码标识n SCID对应的序列标识
Figure PCTCN2019097934-appb-000076
确定用于数据传输的传输方案 所对应的参数集。
情况二、初始值的生成式(或者说，计算方式)与传输方案对应：
上文所列举的用于生成DMRS序列的初始值的公式可理解为DMRS序列的初始值的计算方式。下文中为了简洁，省略对相同或相似情况的说明。
具体地，协议可默认每种传输方案对应一个初始值的生成式。例如，当通信系统采用TS1、SFTD和STTD等传输方案与不同的终端设备传输数据时，协议可预先定义每种传输方案所对应的初始值的生成公式。如，当传输方案为TS1时，初始值的生成式例如可以为上文所列出的公式二；当传输方案为SFTD或STTD时，初始值的生成式例如可以为不同于公式二的另一公式，如下文所列举的公式三或公式四：
公式三：
Figure PCTCN2019097934-appb-000077
公式四：
Figure PCTCN2019097934-appb-000078
当网络设备确定了与终端设备传输数据所使用的传输方案，便可以确定用于生成DMRS序列的初始值的公式。
情况三、用于生成初始值的参数集和初始值的生成式均与传输方案对应：
具体地，当用于生成初始值的参数集以及生成式均与传输方案对应时，网络设备可以根据在情况一中示出的四种可能的实现方式中的一种确定参数集与传输方案对应的参数集。此外，网络设备也可以根据在情况二中示出的方式确定与传输方案对应的初始值的生成式。由此，网络设备可以根据所确定的用于生成初始值的参数集以及生成式生成DMRS的初始值，进而生成DMRS序列。
应理解，上文仅为便于理解示出了DMRS序列与传输方案对应的几种可能的情况，但这不应对本申请构成任何限定。其他将DMRS序列与传输方案对应的技术方案均应落入本申请的保护范围内。
另外，上文列举的DMRS序列与传输方案的对应关系中，传输方案可以通过索引来指示。例如，网络设备可以将用于生成DMRS序列的初始值的参数集与传输方案的对应关系发送给终端设备，或者，网络设备也可以将用于生成DMRS序列的初始值的参数集与传输方案的索引的对应关系发送给终端设备。又例如，网络设备和终端设备可以预先保存用于生成DMRS序列的初始值的生成式与传输方案的对应关系，或者，网络设备和终端设备也可以预先保存用于生成DMRS序列的初始值的生成式与传输方案的索引的对应关系。
当传输方案通过索引来指示时，可以通过同一指示比特中不同的值来指示不同的传输方案。例如，指示比特“0”表示TS1，指示比特“1”表示TS2；又例如，指示比特“00”表示TS1，指示比特“01”表示SFTD，指示比特“10”表示STTD等。为了简洁，这里不一一列举。应理解，这里所列举的指示比特与传输方案的对应关系仅为示例性说明，不应对本申请构成任何限定。此外，网络设备可以基于数据的传输方案对待传输的数据进行处理，以便在步骤220中发送该数据。应理解，由于网络设备基于传输方案对数据进行处理的具体方法可以与现有技术相同，且前文中已经列举了几种不同的传输方案下对数据的不同处理方式。为了简洁，这里省略对该具体过程的详细说明。
在步骤220中，网络设备发送DMRS序列和数据。
具体地，该DMRS序列和数据例如可以承载在PDSCH上。网络设备可以将步骤210中生成的DMRS序列以及待发送的数据映射到PDSCH上，并发送给各终端设备。各终端设备可以根据此前接收到的控制信道，例如物理下行控制信道(physical downlink control channel，PDCCH)，确定接收PDSCH的时频资源，进而在相应的时频资源上接收该DMRS序列和数据。
应理解，网络设备和各终端设备传输DMRS序列和数据的具体过程可以与现有技术相同，为了简洁，这里省略对该具体过程的详细说明。
可选地，该步骤220具体包括：
步骤2201，网络设备发送第一DMRS序列和第一数据。
在本实施例中，为便于区分和说明，可以将网络设备发送给第一终端设备的DMRS序列称为第一DMRS序列，可以将网络设备发送给第一终端设备的数据称为第一数据。
相应地，在步骤2201中，第一终端设备接收第一DMRS序列和第一数据。该第一DMRS序列和数据例如可以承载在PDSCH上。终端设备可以在该PDSCH上接收该第一DMRS序列和第一数据。
在步骤230中，第一终端设备基于第一DMRS解调第一数据，以得到该第一数据的估计值。
第一终端设备可以根据在步骤2201中接收到的第一DMRS序列和自身生成的第一DMRS序列估计等效信道矩阵。
下面首先详细说明第一终端设备生成第一DMRS序列的具体过程。
如前所述，由于DMRS序列与传输方案相关，对于第一终端设备来说，其接收到的第一DMRS序列与传输方案相关。由于第一DMRS序列的初始值与传输方案相关，第一终端设备在生成该第一DMRS序列时，也需要确定用于生成该第一DMRS序列的初始值。具体地，当该第一DRMS序列的初始值与传输方案相关时，用于生成该初始值的参数集可以与传输方案具有对应关系；或者，用于生成该初始值的生成式可以与传输方案相关；或者，用于生成该初始值的参数集和生成式均可以与传输方案相关。因此，第一终端设备在生成第一DMRS序列时，可以预先获取DMRS序列的初始值与传输方案的对应关系。
下面将分别结合上述三种可能的情况来说明第一终端设备生成第一DMRS的具体过程。需要说明的是，当协议默认将DMRS序列与传输方案的关系定义为下文列举的某一种情况时，网络设备和第一终端设备均可以基于相应的方式生成DMRS。
情况一、用于生成DMRS序列的初始值的参数集与传输方案对应：
情况一默认DMRS序列的初始值的生成式与传输方案不具有对应关系。即，对于不同的传输方案不区分初始值的生成式。换句话说，对于不同的传输方案，可以假设使用相同的初始值的生成式。该生成式例如可以为现有技术中所使用的生成式，如上文所描述的公式二。
具体地，参数集与传输方案的对应关系可以是预先定义，如协议定义，也可以是由网络设备确定后指示给第一终端设备的。第一终端设备可以分别通过以下几种实现方式来确定至少一个参数集与至少一种传输方案的对应关系：
实现方式1、该扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000079
的组合与传输方案的对应关系可以是预定义的，如协议定义。第一终端设备可以预先保存该至少一个参数集与至少一种传输方 案的对应关系。
实现方式2、该扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000080
与传输方案的对应关系是可以是网络设备配置的。
可选地，该方法还包括：第一终端设备接收第一指示信息，该第一指示信息用于指示第一映射关系，该第一映射关系用于指示以下任意一项：
a)至少一个扰码标识n SCID与至少一种传输方案的对应关系；或
b)至少一个序列标识
Figure PCTCN2019097934-appb-000081
与至少一种传输方案的对应关系；或
c)扰码标识n SCID和所对应的序列标识
Figure PCTCN2019097934-appb-000082
的至少一个组合与至少一种传输方案的对应关系。
相应地，网络设备发送上述第一指示信息，以指示上述第一映射关系。
当网络设备通过第一指示信息指示上述a)或b)时，网络设备可以预先通过现有的高层信令配置扰码标识n SCID和
Figure PCTCN2019097934-appb-000083
序列标识的对应关系，例如前文中所描述的高层参数。第一终端设备在接收到该第一指示信息和高层信令后，便可以根据扰码标识n SCID或序列标识
Figure PCTCN2019097934-appb-000084
与传输方案的对应关系，以及扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000085
的对应关系，确定各种传输方案所对应的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000086
也就是确定至少一个参数集与至少一种传输方案的对应关系。
当网络设备通过第一指示信息指示上述c)时，该第一指示信息可以通过一条信令直接配置至少一个扰码标识n SCID及其所对应的序列标识
Figure PCTCN2019097934-appb-000087
与至少一种传输方案的对应关系，以便第一终端设备确定各种传输方案所对应的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000088
作为示例而非限定，该第一指示信息可以携带在以下任意一项中：RRC消息、MAC CE或DCI。
实现方式3、该扰码标识n SCID与传输方案的对应关系可以由协议定义或者网络设备配置，扰码标识n SCID与序列标识
Figure PCTCN2019097934-appb-000089
的对应关系可以由网络设备配置。
具体地，协议可预先定义至少一个扰码标识n SCID与至少一种传输方案的对应关系，或者，网络设备可预先配置至少一个扰码标识n SCID与至少一种传输方案的对应关系，每种传输方案可对应一个或多个扰码标识n SCID。此外，网络设备可预先通过高层信令配置扰码标识n SCID与序列标识
Figure PCTCN2019097934-appb-000090
的对应关系。例如，可通过已有的RRC消息配置。
第一终端设备可以根据协议所定义的至少一个扰码标识n SCID与至少一种传输方案的对应关系，以及网络设备所指示的扰码标识n SCID与序列标识
Figure PCTCN2019097934-appb-000091
的对应关系
Figure PCTCN2019097934-appb-000092
确定各种传输方案对应的参数集，也就是确定至少一个参数集与至少一种传输方案的对应关系。
实现方式4、该序列标识
Figure PCTCN2019097934-appb-000093
与传输方案的对应关系可以由协议定义或者网络设备配置，扰码标识n SCID与序列标识
Figure PCTCN2019097934-appb-000094
的对应关系可以由网络设备确定。
具体地，协议可预先定义至少一个序列标识
Figure PCTCN2019097934-appb-000095
与至少一种传输方案的对应关系，或者，网络设备可预先配置至少一个序列标识
Figure PCTCN2019097934-appb-000096
与至少一种传输方案的对应关系，每种传输方案可对应一个或多个序列标识
Figure PCTCN2019097934-appb-000097
此外，网络设备可预先通过高层信令配置扰码标识n SCID与序列标识
Figure PCTCN2019097934-appb-000098
的对应关系。例如，可通过已有的RRC消息配置。
第一终端设备可以根据协议所定义的至少一个序列标识
Figure PCTCN2019097934-appb-000099
与至少一种传输方案的对应关系，以及网络设备所指示的扰码标识n SCID与序列标识
Figure PCTCN2019097934-appb-000100
的对应关系，确定各种 传输方案对应的参数集，也就是确定至少一个参数集与至少一种传输方案的对应关系。
当DMRS序列与数据的传输方案的对应关系满足情况一时，网络设备可以通过信令指示用于生成第一DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000101
可选地，在步骤220之前，该方法200还包括：步骤240，网络设备发送第二指示信息，该第二指示信息用于指示生成该第一DRMS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000102
并且，该信令也可以用于间接地指示第一数据的传输方案。
相应地，在步骤240中，第一终端设备接收上述第二指示信息。
具体地，当第一DRMS序列的初始值的参数集与传输方案具有对应关系时，该第二指示信息可以用于指示与第一数据的传输方案对应的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000103
以便该第一终端设备根据所指示的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000104
生成第一DMRS序列。终端设备还可以根据情况一中所描述的对应关系以及第二指示信息所指示的参数确定相应的传输方案，该传输方案即为第一数据的传输方案。
网络设备也可以通过信令直接地指示第一数据的传输方案，第一终端设备可以根据第一数据的传输方案以及情况一中所描述的对应关系，确定用于生成第一DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000105
可选地，该方法还包括：网络设备发送第四指示信息，该第四指示信息用于指示第一数据的传输方案。相应地，第一终端设备接收该第四指示信息。
情况二、用于生成DMRS序列的初始值的生成式与传输方案对应：
情况二默认用于生成DMRS序列的初始值的参数集与传输方案不具有对应关系。即，对于不同的传输方案不区分扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000106
换句话说，对于不同的传输方案，可以假设使用相同的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000107
该扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000108
例如可以通过网络设备配置，如，通过高层信令配置多个序列标识
Figure PCTCN2019097934-appb-000109
并通过DCI指示当前使用的扰码标识n SCID。
具体地，协议可默认每种传输方案对应一个用于生成初始值的公式。例如，当通信系统采用TS1、SFTD和STTD等传输方案与不同的终端设备传输数据时，协议可预先定义每种传输方案所对应的用于生成初始值的公式。如，当传输方案为TS1时，用于生成初始值的公式例如可以为上文所列出的公式二；当传输方案为SFTD或STTD时，用于生成初始值的公式例如可以为不同于公式二的另一公式，如下文所列举的公式三或公式四：
公式三：
Figure PCTCN2019097934-appb-000110
公式四：
Figure PCTCN2019097934-appb-000111
第一终端设备可以根据协议所定义的至少一个生成式与至少一种传输方案的对应关系预先保存上述对应关系。
当DMRS序列与数据的传输方案的对应关系满足情况二时，网络设备也可以通过信令指示用于生成第一DMRS序列的初始值的生成式。可选地，在步骤220之前，该方法200还包括：步骤250，网络设备发送第三指示信息，该第三指示信息指示用于生成该第一DRMS序列的初始值的生成式，以便该第一终端设备根据该生成式生成第一DMRS序列，并可以确定相应的传输方案，该传输方案即为第一数据的传输方案。并且，该信令也可以用于间接地指示第一数据的传输方案。
相应地，在步骤250中，第一终端设备接收上述第三指示信息。
具体地，当第一DRMS序列的初始值的生成式与传输方案具有对应关系时，该第二指示信息可以用于指示与第一数据的传输方案对应的生成式，以便该第一终端设备根据所指示的初始值的生成式生成第一DMRS序列。终端设备还可以根据情况二中所描述的对应关系以及第三指示信息所指示的生成式确定相应的传输方案，该传输方案即为第二数据的传输方案。
网络设备也可以通过信令直接地指示第一数据的传输方案，第一终端设备可以根据第一数据的传输方案以及情况二中所描述的对应关系，确定用于生成第一DMRS序列的初始值的生成式。可选地，该方法还包括：网络设备发送第四指示信息，该第四指示信息用于指示第一数据的传输方案。相应地，第一终端设备接收该第四指示信息。
情况三、用于生成初始值的参数集和初始值的生成式均可以与传输方案对应：
具体地，当用于生成初始值的参数集以及生成式均与传输方案对应时，第一终端设备可以根据在情况一中示出的四种可能的实现方式中的一种确定与各种传输方案对应的参数集。此外，第一终端设备也可以根据在情况二中示出的方式确定与各种传输方案对应的初始值的生成式。应理解，上文仅为便于理解示出了DMRS序列与传输方案对应的几种可能的情况，但这不应对本申请构成任何限定。其他将DMRS序列与传输方案对应的技术方案均应落入本申请的保护范围内。
此后，第一终端设备可以根据第一数据的传输方案确定用于生成第一DMRS序列的初始值的参数集和/或生成式。该第一数据的传输方案例如可以由网络设备通知。
当DMRS序列与数据的传输方案满足情况三时，网络设备也可以通过信令指示用于生成第一DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000112
或者，通过信令指示用于生成第一DMRS序列的初始值的生成式。
可选地，该方法200还包括：步骤240，网络设备发送第二指示信息，该第二指示信息用于指示生成该第一DRMS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000113
相应地，在步骤240中，第一终端设备接收上述第二指示信息。第一终端设备可以基于接收到的第二指示信息确定用于生成第一DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000114
在上文中已经说明，该第二指示信息还可以用于间接地指示第一数据的传输方案。当第一终端设备基于情况一中所描述的对应关系以及第二指示信息所指示的参数确定第一数据的传输方案之后，还可以进一步基于情况二中所描述的对应关系确定用于生成第一DMRS序列的初始值的生成式。
可选地，该方法200还包括：步骤250，网络设备发送第三指示信息，该第三指示信息用于指示生成该第二DMRS序列的初始值的生成式。相应地，在步骤250中，第一终端设备接收上述第三指示信息。第一终端设备可以基于接收到的第三指示信息确定用于生成第一DMRS序列的初始值的生成式。在上文中已经说明，该第三指示信息还可以用于间接地指示第一数据的传输方案。当第一终端设备基于情况二中所描述的对应关系以及第三指示信息所指示的生成式确定第一数据的传输方案之后，还可以进一步基于情况一中所描述的对应关系确定用于生成第一DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000115
可选地，网络设备向第一终端设备发送上述第二指示信息和第三指示信息。相应地， 该第一终端设备接收该第二指示信息和第三指示信息。第一终端设备可以直接根据接收到的第二指示信息确定用于生成第一DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000116
并可以直接根据接收到的第三指示信息确定用于生成第一DMRS序列的初始值的生成式。此外，第一终端设备还可以基于第二指示信息或第三指示信息确定第一数据的传输方案。
可选地，网络设备向第一终端设备发送上述第四指示信息。相应地，该第一终端设备接收该第四指示信息。第一终端设备可以根据第四指示信息所指示的传输方案以及情况一中所描述的对应关系确定用于生成第一DMRS序列的初始值的扰码标识n SCID和/或序列标识
Figure PCTCN2019097934-appb-000117
并可根据第四指示信息所指示的传输方案以及情况二中所描述的对应关系确定用于生成第一DMRS序列的初始值的生成式。
因此，当DMRS序列与数据的传输方案的对应关系满足上述情况一时，网络设备可以仅通过第二指示信息或第四指示信息中的任意一项来指示生成第一DMRS序列的初始值的生成式、扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000118
以及第一数据的传输方案。当DMRS序列与数据的传输方案的对应关系满足上述情况二时，网络设备可以仅通过第三指示信息或第四指示信息中的任意一项来指示生成第一DMRS序列的初始值的生成式、扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000119
以及第一数据的传输方案。当DMRS序列与数据的传输方案满足上述情况三时，网络设备可以仅通过第二指示信息、第三指示信息或第四指示信息中的任意一项来指示生成第一DMRS序列的初始值的生成式、扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000120
以及第一数据的传输方案。
应理解，上文列举的第二指示信息、第三指示信息和第四指示信息例如可以携带在DCI中，第一终端设备在接收到DCI确定了第一数据的传输方案以及相应的用于生成第一DMRS序列的初始值的参数集、初始值的生成式后，便可以基于接收到的第一DMRS序列和自身生成的第一DMRS序列估计信道。
本领域的技术人员可以理解，若将网络设备发送的第一DMRS序列记作向量y，将第一终端设备自身生成的第一DMRS序列记作向量x，则网络设备发送的第一DMRS序列和第一终端设备自身生成的第一DMRS序列之间可满足如下关系：
y＝Hx+n。
其中，H表示等效信道矩阵，n表示接收机噪声。可以很容易看到，接收机噪声n会对接收信号造成影响。由于现有技术已经存在多种方案可供消除上述噪声，因此在本申请实施例中，为便于说明，假设接收机噪声为零，即，信号被无误传输。根据上述关系，第一终端设备可以根据接收到的第一DMRS序列和自身生成的第一DMRS序列估计出等效信道矩阵，从而进一步解调数据。
需要说明的是，第一终端设备根据接收到的第一DMRS序列和自身生成的第一DMRS序列估计等效信道矩阵时，可以分别基于各个端口上的DMRS序列分别估计等效信道向量，然后基于传输方案和各端口上的等效信道向量构造等效信道矩阵。
由于第一终端设备并不知道网络设备是否在第一数据的传输资源上传输其他信号，为了保证较好的接收质量，第一终端设备在接收到第一DMRS和第一数据的同时，还可能在传输第一数据的时频资源上接收到其他信号，例如，噪声信号，或者，发送给其他终端设备(例如记作第二终端设备)的数据DMRS序列。为便于区分和说明，可以将网络设 备发送给第二终端设备的数据记作第二数据，并可以将网络设备发送给第二终端设备的DMRS序列记作第二DMRS序列。
网络设备可以预先通过例如DCI指示传输DMRS序列的时频资源，该时频资源例如可包括传输前置(front-loaded)DMRS序列和附加(additional)DMRS序列的OFDM符号，或者，传输DMRS序列的OFDM符号。第一终端设备可以在网络设备所指示的用于传输DMRS序列的时频资源上接收信号，并基于第二DMRS序列与接收到的信号的相关性确定是否接收到第二DMRS序列。若确定接收到第二DMRS序列，则该第二DMRS序列和第二数据可能会对第一终端设备的接收带来干扰，第一终端设备需要进一步确定第二数据的传输方案，并进行干扰估计，以将第一数据解调出来。
下面对第一终端设备基于第二DMRS序列与接收到的信号的相关性确定是否接收到第二DMRS序列并在接收到第二DMRS序列的情况下确定第二数据的传输方案的具体方法做详细说明。
第一终端设备可以首先假设接收到了第二DMRS序列，基于信道估计的方式估计干扰信道。具体地，第一终端设备可以根据遍历所有可能的传输方案，例如，TS1、SFTD和STTD)，基于每一种传输方案以及传输方案与DMRS序列的对应关系生成第二DMRS序列，该生成的第二DMRS序列是第一终端设备基于假设的传输方案而生成的第二DMRS序列。为便于与网络设备发送的第二DMRS序列区分，这里可以将第一终端设备基于假设的传输方案生成的DMRS序列记作假设的第二DMRS序列。第一终端设备可以基于该假设的第二DMRS序列与接收到的信号，根据以下公式估计干扰信道：
Figure PCTCN2019097934-appb-000121
其中，
Figure PCTCN2019097934-appb-000122
表示干扰信道矩阵的估计值，
Figure PCTCN2019097934-appb-000123
表示第一根发射天线与第一根接收天线之间的信道的估计值，
Figure PCTCN2019097934-appb-000124
表示第一根发射天线与第二根接收天线之间的信道的估计值，
Figure PCTCN2019097934-appb-000125
表示第二根发射天线与第一根接收天线之间的信道的估计值，
Figure PCTCN2019097934-appb-000126
表示第二根发射天线与第二根接收天线之间的信道的估计值。y 11表示第一根接收天线在第1个RE上接收到的信号，y 12表示第二根接收天线在第1个RE上接收到的信号，y 21表示第一根接收天线在第2个RE上接收到的信号，y 22表示第一根接收天线在第2个RE上接收到的信号。p 1表示第一终端设备生成的第一DMRS端口的DMRS序列，p 2表示第一终端设备生成的第二DMRS端口的DMRS序列。
若第一终端设备在遍历传输方案的过程中，基于某一假设的传输方案生成第二DMRS序列代入公式五中计算得到的信道矩阵的估计值较高，例如，该信道矩阵中的各元素均大于或等于预设的门限值，则可以确定基于此次假设的传输方案生成的第二DMRS序列与接收到的信号的相关性很高，这说明假设的第二DMRS序列与接收到的信号是接近的，也就是说，该第一终端设备接收到的信号即为第二DMRS序列，该第一终端设备此次猜测的传输方案也就是第二数据的传输方案。
相反，若第一终端设备在遍历传输方案的过程中，基于某一假设的传输方案生成第二DMRS序列代入公式五中计算得到的信道矩阵的估计值较低，例如，该信道矩阵中的至少一个元素趋近于零，或者，该信道矩阵中的每个元素均趋近于零，或者，该信道矩阵中的每个元素均小于预设的门限值，则可以确定基于此次假设的传输方案生成的第二DMRS序列与接收到的信号相关性低，这说明假设的第二DMRS序列与接收到的信号不同，也就是说，该第一终端设备此次假设的传输方案并不是第二数据的传输方案。
若第一终端设备遍历了所有的传输方案，且基于每一种传输方案根据上式计算得到的信道矩阵的估计值均较低，则可以确定基于每一种传输方案生成的第二DMRS序列与接收到的信号相关性都较低。这说明第一终端设备并未接收到第二DMRS序列，或者说，网络设备并未发送第二DMRS序列和第二数据，该第一终端设备此时接收到的信号可能仅为噪声。即，该第一终端设备此时并未受到其他信号的干扰。
其中，第一终端设备遍历各种传输方案生成假设的第二DMRS序列可以基于以下三种情况：
情况一、用于生成初始值的参数集与传输方案对应：
情况一默认初始值的生成式与传输方案不具有对应关系。即，对于不同的传输方案不区分初始值的生成式。换句话说，对于不同的传输方案，可以假设使用相同的初始值的生成式。该生成式例如可以为现有技术中所使用的生成式，如上文所描述的公式二。
第一终端设备可以遍历各种传输方案所对应的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000127
以及上文列举的公式二生成初始值，再进一步地根据公式一生成第二DMRS序列。
情况二、初始值的生成式与传输方案对应：
情况二默认用于生成DMRS序列的初始值的参数集与传输方案不具有对应关系。即，对于不同的传输方案不区分扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000128
换句话说，对于不同的传输方案，可以假设使用相同的扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000129
该扰码标识n SCID和序列标识
Figure PCTCN2019097934-appb-000130
例如可以通过网络设备配置，如，通过高层信令配置多个序列标识
Figure PCTCN2019097934-appb-000131
并通过DCI指示当前使用的扰码标识n SCID。
第一终端设备可以遍历各种传输方案所对应的初始值的生成式生成初始值，再进一步根据公式一生成DMRS序列。
情况三、用于生成初始值的参数集和初始值的生成式均可以与传输方案对应：
第一终端设备可以遍历各种传输方案所对应的参数集和初始值的生成式，生成初始值，再进一步根据公式一生成DMRS序列。
应理解，上文中所列举的基于估计的干扰信道矩阵中的值的大小确定两个信号相关性高低的方法仅为一种可能的实现方式，不应对本申请构成任何限定。
还应理解，上文列举的对两个信号做相关的具体方法仅为示例性说明，不应对本申请 构成任何限定。本申请对两个信号做相关的具体实现方式并不做限定。
在第一终端设备确定接收到第二DMRS序列的情况下，可选地，步骤220还包括：步骤2202，网络设备发送第二DMRS序列和第二数据。相应地，第一终端设备接收第二DMRS序列和第二数据。
在本实施例中，第一DMRS序列与第二DMRS序列可以占用相同的时频资源，也可以占用不同的时频资源。当第一DMRS序列和第二DMRS序列占用相同的时频资源时，该第一DMRS序列和第二DMRS序列可以是通过例如码分复用(code division multiplexing，CDM)的方式发送的不同端口的DMRS序列，也可以是同一个端口的两个DMRS序列。当第一DMRS序列和第二DMRS序列占用不同的时频资源时，该第一DMRS序列和第二DMRS序列可以是通过例如频分复用(frequency division multiplexing，FDM)或时分复用(time division multiplexing，TDM)的方式发送的不同端口的DMRS序列。
第一终端设备在确定了第二数据的传输方案之后，便可以基于第二数据的传输方案估计干扰噪声协方差矩阵，解调第一数据。因此，步骤230可以进一步包括：第一终端设备基于第一DMRS序列和第二DMRS序列，解调第一数据，以得到该第一数据的估计值。
本领域的技术人员可以理解，由于在不同的传输方案下，对信号的处理方式不同，所构造的干扰协方差矩阵也有差异。
例如，当网络设备使用端口#0向第一终端设备传输第一数据时所使用的传输方案为TS1，且网络设备使用端口#1向第二终端设备传输第二数据时使用的传输方案为TS1时，第一终端设备可以根据接收到的与不同端口对应的DMRS分别估计出与端口#0和端口#1对应的等效信道向量，例如分别记作
Figure PCTCN2019097934-appb-000132
和
Figure PCTCN2019097934-appb-000133
进而可根据第二数据的传输方案TS1，确定与端口#1对应的干扰噪声协方差矩阵为
Figure PCTCN2019097934-appb-000134
又例如，当网络设备使用端口#0向第一终端设备传输数据时所使用的传输方案为TS1，且网络设备使用端口#1和#2向第二终端设备传输数据时使用的传输方案为SFTD时，第一终端设备可以根据与不同端口对应的DMRS分别估计出与端口#0、端口#1和端口#2对应的等效信道向量，例如分别记作
Figure PCTCN2019097934-appb-000135
和
Figure PCTCN2019097934-appb-000136
由于第二终端设备传输第二数据所使用的传输方案为SFTD，干扰噪声协方差矩阵需要联合两个端口的两个子载波来考虑，若经过层映射和Alamouti编码后得到的信号表示为
Figure PCTCN2019097934-appb-000137
则可以由该两个端口(即，端口#1和#2)的两个RE对应的等效信道向量构造得到如下矩阵：
Figure PCTCN2019097934-appb-000138
若令
Figure PCTCN2019097934-appb-000139
第一终端设备可分别根据与端口#1和#2对应的等效信道向量得到干扰噪声协方差矩阵分别为E(a 0a 0 H)和E(a 1a 1 H)。
综上可以看到，第一终端设备在接收到第二DMRS序列进行干扰估计时，如果能够预先知道第二数据的传输方案，则可以直接根据传输方案确定干扰噪声协方差矩阵，而不需要遍历各种传输方案去盲猜，由此可以大大降低终端设备干扰估计的复杂度。
第一终端设备在基于第一DMRS序列估计得到等效信道矩阵，并基于第二DRMS序列和第二数据的传输方案构造干扰噪声协方差矩阵之后，可进一步根据公式y＝Hx+n， 可以得到的估计值
Figure PCTCN2019097934-appb-000140
其中，H表示用于第一数据传输的等效信道矩阵，也就是由第一DMRS序列估计得到的等效信道矩阵，
Figure PCTCN2019097934-appb-000141
表示干扰噪声协方差矩阵，也就是由第二DMRS序列估计得到的等效信道矩阵和第二数据的传输方案确定的干扰噪声协方差矩阵，y表示第一终端设备接收到的信号，x表示要发送给第一终端设备的第一数据，该
Figure PCTCN2019097934-appb-000142
表示该第一数据x的估计值。
此后，第一终端设备可以基于干扰噪声协方差矩阵、通过已有技术中的接收算法来解调第一数据。作为示例而非限定，该接收算法可以为最小均方误差(minimum mean square error，MMSE)-干扰抑制合并(interference rejection combining，IRC)接收算法。由于对接收到的信号进行处理的接收算法以及具体的数据解调过程均可以与现有技术相同，为了简洁，这里省略对其具体过程的详细说明。
应理解，上文所列举的第一DMRS序列、第一数据以及第二DMRS序列、第二数据仅为示例，不应对本申请构成任何限定，网络设备还可以生成并发送更多的DMRS序列和数据，终端设备也可能接收到更多的DMRS序列和数据的干扰。
基于上述技术方案，通过将DMRS序列与传输方案建立对应关系，第一终端设备只需要遍历各传输方案对应的参数集和/或初始值的生成式，根据接收到的第二DMRS序列来确定第二数据的传输方案，也就是可以预先确定第二数据的传输方案，进而可以根据第二数据的传输方案和第二DMRS序列进行干扰估计和数据解调。相比于现有技术而言，第一终端设备不再需要遍历各种传输方案去盲检测干扰数据的传输方案并重复地尝试数据解调，直到数据解调成功才得以完成该数据的解调。因此，可以大大减小第一终端设备的计算量，也就大大降低了第一终端设备干扰估计的复杂度，从而降低了解调复杂度。
需要说明的是，上文中列举的三种情况均可以大大降低干扰估计的复杂度。相比较而言，情况一和情况二中传输方案仅与参数集或初始值的生成式中的一项相关，因此，相比于情况三而言，计算量更小，复杂度更低。
以上，结合图2详细说明了本申请实施例提供的接收和发送数据的方法。以下，结合图3至图5详细说明本申请实施例提供的通信装置。
图3是本申请实施例提供的通信装置的示意性框图。如图3所示，该通信装置500可以包括收发单元510和处理单元520。
在一种可能的设计中，该通信装置500可对应于上文方法实施例中的终端设备，例如，可以为终端设备，或者配置于终端设备中的芯片。
具体地，该通信装置500可对应于根据本申请实施例的方法200中的终端设备，该通信装置500可以包括用于执行图2中的方法200中的终端设备执行的方法的单元。并且，该通信装置500中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200的相应流程。
其中，当该通信装置500用于执行图2中的方法200时，收发单元510可用于执行方法200中的步骤2201、步骤2202，以及步骤240或步骤250中的至少一个步骤，处理单元520可用于执行方法200中的步骤230。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置500中的收发单元可对应于图4中示出的终端设备600中的收发器602，该通信装置500中的处理单元520可对应于图4中示出的终端设备600中的处 理器601。
在另一种可能的设计中，该通信装置500可对应于上文方法实施例中的网络设备，例如，可以为网络设备，或者配置于网络设备中的芯片。
具体地，该通信装置500可对应于根据本申请实施例的方法200中的网络设备，该通信装置500可以包括用于执行图2中的方法200中的网络设备执行的方法的单元。并且，该通信装置500中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200的相应流程。
其中，当该通信装置500用于执行图2中的方法200时，收发单元510可用于执行方法300中的步骤2201、步骤2202，以及步骤240或步骤250中的至少一个步骤，处理单元520可用于执行方法200中的步骤210。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置500中的收发单元510可对应于图5中示出的网络设备700中的收发器720，该通信装置500中的处理单元520可对应于图5中示出的网络设备700中的处理器710。
图4是本申请实施例提供的终端设备600的结构示意图。如图所示，该终端设备600包括处理器601和收发器602。可选地，该终端设备600还包括存储器603。其中，处理器601、收发器602和存储器603之间可以通过内部连接通路互相通信，传递控制和/或数据信号，该存储器603用于存储计算机程序，该处理器601用于从该存储器603中调用并运行该计算机程序，以控制该收发器602收发信号。可选地，终端设备600还可以包括天线604，用于将收发器602输出的上行数据或上行控制信令通过无线信号发送出去。
上述处理器601和存储器603可以合成一个处理装置，处理器601用于执行存储器603中存储的程序代码来实现上述功能。具体实现时，该存储器603也可以集成在处理器601中，或者独立于处理器601。
当存储器603中存储的程序指令被处理器601执行时，该处理器601用于控制收发器602接收DMRS序列和数据，并基于该DMRS序列解调数据，以得到该数据的估计值。其中，该DMRS序列与数据的传输方案相关。
具体地，该终端设备600可对应于根据本申请实施例的方法200中的终端设备，该终端设备600可以包括用于执行图2中的方法200中的终端设备执行的方法的单元。并且，该终端设备600中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200的相应流程。
上述处理器601可以用于执行前面方法实施例中描述的由终端设备内部实现的动作，而收发器602可以用于执行前面方法实施例中描述的终端设备向网络设备发送或从网络设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
可选地，上述终端设备600还可以包括电源605，用于给终端设备中的各种器件或电路提供电源。
除此之外，为了使得终端设备的功能更加完善，该终端设备600还可以包括输入单元606、显示单元607、音频电路608、摄像头609和传感器610等中的一个或多个，所述音频电路还可以包括扬声器6082、麦克风6084等。
图5是本申请实施例提供的网络设备700的结构示意图。如图所示，该网络设备700 包括处理器710和收发器720。可选地，该网络设备700还包括存储器730。其中，处理器710、收发器720和存储器730之间通过内部连接通路互相通信，传递控制和/或数据信号，该存储器730用于存储计算机程序，该处理器710用于从该存储器730中调用并运行该计算机程序，以控制该收发器720收发信号。
上述处理器710和存储器730可以合成一个处理装置，处理器710用于执行存储器730中存储的程序代码来实现上述功能。具体实现时，该存储器730也可以集成在处理器710中，或者独立于处理器710。
上述网络设备700还可以包括天线740，用于将收发器720输出的下行数据或下行控制信令通过无线信号发送出去。
当存储器730中存储的程序指令被处理器710执行时，该处理器710用于生成DMRS，并控制收发器720发送该DMRS和数据。其中，该DMRS序列和数据的传输方案相关。
具体地，该网络设备700可对应于根据本申请实施例的方法200中的网络设备，该网络设备700可以包括用于执行图2中的方法200中的网络设备执行的方法的单元。并且，该网络设备700中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200的相应流程，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
上述处理器710可以用于执行前面方法实施例中描述的由网络设备内部实现的动作，而收发器720可以用于执行前面方法实施例中描述的网络设备向终端设备发送或从终端设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
应理解，本申请实施例中的处理器可以为中央处理单元(central processing unit，CPU)，该处理器还可以是其他通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现成可编程门阵列(field programmable gate array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行图2所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图2所示实施例中的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个终端设备以及一个或多个网络设备。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (52)

  1. 一种接收数据的方法，其特征在于，包括：
    接收解调参考信号DMRS序列和数据，所述DMRS序列与所述数据的传输方案相关；
    基于所述DMRS序列解调所述数据，以得到所述数据的估计值。
  2. 如权利要求1所述的方法，其特征在于，用于生成DMRS序列的初始值的扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100001
    的至少一个组合与至少一种传输方案对应。
  3. 如权利要求2所述的方法，其特征在于，所述方法还包括：
    接收第一指示信息，所述第一指示信息用于指示第一映射关系，所述第一映射关系包括以下任意一项：
    至少一个扰码标识n SCID与至少一种传输方案的对应关系；或
    至少一个序列标识
    Figure PCTCN2019097934-appb-100002
    与至少一种传输方案的对应关系；或
    扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100003
    的至少一个组合与至少一种传输方案的对应关系。
  4. 如权利要求2或3所述的方法，其特征在于，所述方法还包括：
    接收第二指示信息，所述第二指示信息用于指示用于生成所述DMRS序列的初始值的扰码标识n SCID和/或序列标识
    Figure PCTCN2019097934-appb-100004
  5. 如权利要求4所述的方法，其特征在于，所述方法还包括：
    基于所述第二指示信息确定所述数据的传输方案。
  6. 如权利要求1所述的方法，其特征在于，用于生成DMRS序列的初始值的至少一个生成式与至少一种传输方案对应。
  7. 如权利要求6所述的方法，其特征在于，所述方法还包括：
    接收第三指示信息，所述第三指示信息用于指示所述DMRS序列的初始值的生成式。
  8. 如权利要求7所述的方法，其特征在于，所述方法还包括：
    基于所述第三指示信息确定所述数据的传输方案。
  9. 一种发送数据的方法，其特征在于，包括：
    生成解调参考信号DMRS序列，所述DMRS序列与数据的传输方案相关；
    发送所述DMRS序列和所述数据。
  10. 如权利要求9所述的方法，其特征在于，用于生成DMRS序列的初始值的扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100005
    的至少一个组合与至少一种传输方案对应。
  11. 如权利要求10所述的方法，其特征在于，所述方法还包括：
    发送第一指示信息，所述第一指示信息用于指示第一映射关系，其中，所述第一映射关系包括以下任意一项：
    至少一个扰码标识n SCID与至少一种传输方案的对应关系；或
    至少一个序列标识
    Figure PCTCN2019097934-appb-100006
    与至少一种传输方案的对应关系；或
    扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100007
    的至少一个组合与至少一种传输方案的对应关系。
  12. 如权利要求10或11所述的方法，其特征在于，所述方法还包括：
    发送第二指示信息，所述第二指示信息用于指示用于生成所述DMRS序列的初始值的扰码标识n SCID和/或序列标识
    Figure PCTCN2019097934-appb-100008
  13. 如权利要求9所述的方法，其特征在于，用于生成DMRS序列的初始值的至少一个生成式与至少一种传输方案对应。
  14. 如权利要求13所述的方法，其特征在于，所述方法还包括：
    发送第三指示信息，所述第三指示信息用于指示所述DMRS序列的初始值的生成式。
  15. 一种通信装置，其特征在于，包括：
    收发单元，用于接收解调参考信号DMRS序列和数据，所述DMRS序列与所述数据的传输方案相关；
    处理单元，用于基于所述DMRS序列解调所述数据，以得到所述数据的估计值。
  16. 如权利要求15所述的通信装置，其特征在于，用于生成DMRS序列的初始值的扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100009
    的至少一个组合与至少一种传输方案对应。
  17. 如权利要求16所述的通信装置，其特征在于，所述收发单元还用于接收第一指示信息，所述第一指示信息用于指示所述第一映射关系，所述第一映射关系包括以下任意一项：
    至少一个扰码标识n SCID与至少一种传输方案的对应关系；或
    至少一个序列标识
    Figure PCTCN2019097934-appb-100010
    与至少一种传输方案的对应关系；或
    扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100011
    的至少一个组合与至少一种传输方案的对应关系。
  18. 如权利要求16或17所述的通信装置，其特征在于，所述收发单元还用于接收第二指示信息，所述第二指示信息用于指示用于生成所述DMRS序列的初始值的扰码标识n SCID和/或序列标识
    Figure PCTCN2019097934-appb-100012
  19. 如权利要求18所述的通信装置，其特征在于，所述处理单元还用于基于所述第二指示信息确定所述数据的传输方案。
  20. 如权利要求15所述的通信装置，其特征在于，用于生成DMRS序列的初始值的至少一个生成式与至少一种传输方案对应。
  21. 如权利要求20所述的通信装置，其特征在于，所述收发单元还用于接收第三指示信息，所述第三指示信息用于指示用于生成所述DMRS序列的初始值的扰码标识n SCID和/或序列标识
    Figure PCTCN2019097934-appb-100013
  22. 如权利要求21所述的通信装置，其特征在于，所述处理单元还用于基于所述第三指示信息确定所述数据的传输方案。
  23. 一种通信装置，其特征在于，包括：
    处理单元，用于生成解调参考信号DMRS序列，所述DMRS序列与数据的传输方案相关；
    收发单元，用于发送所述DMRS序列和所述数据。
  24. 如权利要求23所述的通信装置，其特征在于，用于生成DMRS序列的初始值的扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100014
    的至少一个组合与至少一种传输方案对应。
  25. 如权利要求24所述的通信装置，其特征在于，所述收发单元还用于发送第一指示信息，所述第一指示信息用于指示所述第一映射关系，其中，所述第一映射关系包括以下任意一项：
    至少一个扰码标识n SCID与至少一种传输方案的对应关系；或
    至少一个序列标识
    Figure PCTCN2019097934-appb-100015
    与至少一种传输方案的对应关系；或
    扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100016
    的至少一个组合与至少一种传输方案的对应关系。
  26. 如权利要求24或25所述的通信装置，其特征在于，所述收发单元还用于发送第二指示信息，所述第二指示信息用于指示用于生成所述DMRS序列的扰码标识n SCID和/或序列标识
    Figure PCTCN2019097934-appb-100017
  27. 如权利要求23所述的通信装置，其特征在于，用于生成DMRS序列的初始值的至少一个生成式与至少一种传输方案对应。
  28. 如权利要求27所述的通信装置，其特征在于，所述收发单元还用于发送第三指示信息，所述第三指示信息用于指示所述DMRS序列的初始值的生成式。
  29. 一种通信装置，其特征在于，包括：
    收发器，用于接收解调参考信号DMRS序列和数据，所述DMRS序列与所述数据的传输方案相关；
    处理器，用于基于所述DMRS序列解调所述数据，以得到所述数据的估计值。
  30. 如权利要求29所述的通信装置，其特征在于，用于生成DMRS序列的初始值的扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100018
    的至少一个组合与至少一种传输方案对应。
  31. 如权利要求30所述的通信装置，其特征在于，所述收发器还用于接收第一指示信息，所述第一指示信息用于指示所述第一映射关系，所述第一映射关系包括以下任意一项：
    至少一个扰码标识n SCID与至少一种传输方案的对应关系；或
    至少一个序列标识
    Figure PCTCN2019097934-appb-100019
    与至少一种传输方案的对应关系；或
    扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100020
    的至少一个组合与至少一种传输方案的对应关系。
  32. 如权利要求30或31所述的通信装置，其特征在于，所述收发器还用于接收第二指示信息，所述第二指示信息用于指示用于生成所述DMRS序列的初始值的扰码标识n SCID和/或序列标识
    Figure PCTCN2019097934-appb-100021
  33. 如权利要求32所述的通信装置，其特征在于，所述收发器还用于基于所述第二指示信息确定所述数据的传输方案。
  34. 如权利要求29所述的通信装置，其特征在于，用于生成DMRS序列的初始值的至少一个生成式与至少一种传输方案对应。
  35. 如权利要求34所述的通信装置，其特征在于，所述收发器还用于接收第三指示信息，所述第三指示信息用于指示用于生成所述DMRS序列的初始值的扰码标识n SCID和/或序列标识
    Figure PCTCN2019097934-appb-100022
  36. 如权利要求35所述的通信装置，其特征在于，所述处理器还用于基于所述第三指示信息确定所述数据的传输方案。
  37. 一种通信装置，其特征在于，包括：
    处理器，用于生成解调参考信号DMRS序列，所述DMRS序列与数据的传输方案相关；
    收发器，用于发送所述DMRS序列和所述数据。
  38. 如权利要求37所述的通信装置，其特征在于，用于生成DMRS序列的初始值的扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100023
    的至少一个组合与至少一种传输方案对应。
  39. 如权利要求38所述的通信装置，其特征在于，所述收发器还用于发送第一指示 信息，所述第一指示信息用于指示所述第一映射关系，其中，所述第一映射关系包括以下任意一项：
    至少一个扰码标识n SCID与至少一种传输方案的对应关系；或
    至少一个序列标识
    Figure PCTCN2019097934-appb-100024
    与至少一种传输方案的对应关系；或
    扰码标识n SCID和序列标识
    Figure PCTCN2019097934-appb-100025
    的至少一个组合与至少一种传输方案的对应关系。
  40. 如权利要求38或39所述的通信装置，其特征在于，所述收发器还用于发送第二指示信息，所述第二指示信息用于指示用于生成所述DMRS序列的扰码标识n SCID和/或序列标识
    Figure PCTCN2019097934-appb-100026
  41. 如权利要求37所述的通信装置，其特征在于，用于生成DMRS序列的初始值的至少一个生成式与至少一种传输方案对应。
  42. 如权利要求41所述的通信装置，其特征在于，所述收发器还用于发送第三指示信息，所述第三指示信息用于指示所述DMRS序列的初始值的生成式。
  43. 一种通信装置，其特征在于，所述通信装置用于实现如权利要求1至8中任一项所述的方法。
  44. 一种通信装置，其特征在于，所述通信装置用于实现如权利要求9至14中任一项所述的方法。
  45. 一种处理装置，其特征在于，包括处理器，所述处理器用于执行存储器中存储的计算机程序，以使得所述处理装置实现如权利要求1至8中任一项所述的方法。
  46. 一种处理装置，其特征在于，包括处理器，所述处理器用于执行存储器中存储的计算机程序，以使得所述处理装置实现如权利要求9至14中任一项所述的方法。
  47. 一种处理装置，其特征在于，包括：
    存储器，用于存储计算机程序；
    处理器，用于从所述存储器调用并运行所述计算机程序，以使得所述处理装置实现如权利要求1至8中任一项所述的方法。
  48. 一种处理装置，其特征在于，包括：
    存储器，用于存储计算机程序；
    处理器，用于从所述存储器调用并运行所述计算机程序，以使得所述处理装置实现如权利要求9至14中任一项所述的方法。
  49. 一种计算机可读介质，其特征在于，包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至8中任一项所述的方法。
  50. 一种计算机可读介质，其特征在于，包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求9至14中任一项所述的方法。
  51. 一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得计算机执行如权利要求1至8中任一项所述的方法。
  52. 一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得计算机执行如权利要求9至14中任一项所述的方法
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