WO2018145251A1 - 无线通信方法、终端设备和网络设备 - Google Patents
无线通信方法、终端设备和网络设备 Download PDFInfo
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- WO2018145251A1 WO2018145251A1 PCT/CN2017/073072 CN2017073072W WO2018145251A1 WO 2018145251 A1 WO2018145251 A1 WO 2018145251A1 CN 2017073072 W CN2017073072 W CN 2017073072W WO 2018145251 A1 WO2018145251 A1 WO 2018145251A1
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0028—Variable division
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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
- H04L5/0037—Inter-user or inter-terminal allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
- H04L27/2607—Cyclic extensions
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
- H04L27/261—Details of reference signals
- H04L27/2613—Structure of the reference signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2626—Arrangements specific to the transmitter only
- H04L27/2646—Arrangements specific to the transmitter only using feedback from receiver for adjusting OFDM transmission parameters, e.g. transmission timing or guard interval length
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0003—Two-dimensional division
- H04L5/0005—Time-frequency
- H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
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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
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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
- H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
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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
- H04L5/0091—Signaling for the administration of the divided path
- H04L5/0094—Indication of how sub-channels of the path are allocated
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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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
- H04L5/0001—Arrangements for dividing the transmission path
- H04L5/0026—Division using four or more dimensions
Definitions
- the present application relates to the field of communications, and more particularly, to a wireless communication method, a terminal device, and a network device.
- a Demodulation Reference Signal (DMRS) sequence can be used for correlated demodulation of a channel.
- DMRS Demodulation Reference Signal
- orthogonality may be obtained between different terminal devices by using different cyclic shifts of different DMRS sequences or different orthogonal codes. Among them, the number of terminal devices that use orthogonal codes to obtain orthogonality support multiplexing is small.
- the terminal device may use, for example, Discrete Fourier Transform Orthogonal Frequency Division Multiplexing Based Spread Spectrum (DFT-S-OFDM) multiple access method or cyclic prefix orthogonal frequency division multiplexing ( Cyclic Prefix Orthogonal Frequency Division Multiplexing (CP-OFDM) is used for uplink transmission.
- DFT-S-OFDM Discrete Fourier Transform Orthogonal Frequency Division Multiplexing Based Spread Spectrum
- CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing
- SC-FDMA Single Carrier-Frequency Division Multiple Access
- the CP-OFDM system may also be referred to as an Orthogonal Frequency Division Multiple Access (OFDMA) scheme.
- OFDMA Orthogonal Frequency Division Multiple Access
- the embodiment of the present invention provides a wireless communication method, a terminal device, and a network device, which can implement multi-user multiplexing by using a terminal device that performs transmission of a DMRS sequence by using multiple multiple access methods.
- a wireless communication method including:
- the terminal device determines the number K of DMRS sequences corresponding to the DMRS port of the first demodulation reference signal, and the physical resources occupied by each DMRS sequence in the K DMRS sequences, where K is a positive integer;
- each of the DMRS sequences is sent to the network device by using the first DMRS port on the determined physical resource occupied by each DMRS sequence.
- the terminal device determines a quantity K of a DMRS sequence corresponding to the first DMRS port, and a physical resource occupied by each DMRS sequence in the K DMRS sequences, include:
- the terminal device determines a quantity K of DMRS sequences corresponding to the first DMRS port, and/or each of the K DMRS sequences The physical resources occupied by the DMRS sequence.
- the multiple access manner adopted by using the first DMRS port to send the DMRS sequence Determining, by the terminal device, the number K of DMRS sequences corresponding to the first DMRS port, including:
- the first correspondence is used to indicate the number of DMRS sequences corresponding to the first DMRS port in each multiple access mode in at least one multiple access mode.
- the multiple access manner adopted by using the first DMRS port to send the DMRS sequence Determining, by the terminal device, physical resources occupied by each DMRS sequence in the K DMRS sequences, including:
- the second correspondence is used to indicate, in each of the at least one multiple access mode, the physics corresponding to each DMRS sequence in the at least one DMRS sequence corresponding to the first DMRS port. Resources.
- the multiple access manner used by the DMRS sequence to send the first DMRS port is the first multiple In the address mode
- the K DMRS sequences include a first DMRS sequence, where the first DMRS sequence and the second DMRS sequence included in the DMRS sequence transmitted by using the same DMRS port occupy the same physical resource when using the second multiple access mode And/or employing the same root sequence, wherein the second multiple access mode is different from the first multiple access mode.
- the first multiple access mode is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM multiple access mode
- the second multiple access mode is a cyclic prefix orthogonal frequency division Multiplexed CP-OFDM multiple access method
- the first multiple access mode is a CP-OFDM multiple access mode
- the second multiple access mode is a DFT-S-OFDM multiple access mode
- the multiple access mode used by the DMRS sequence to send the DMRS sequence by using the first DMRS port is DFT-S
- the K is an integer greater than 1;
- the K is 1.
- the determining, by the terminal device, the quantity K of the DMRS sequence corresponding to the DMRS port of the first demodulation reference signal includes:
- the terminal device determines the number K of DMRS sequences corresponding to the first DMRS port according to the DMRS sequence indication information carried by the network device by scheduling the downlink control information DCI of the data transmission corresponding to the DMRS sequence.
- the K is an integer greater than 1.
- the DMRSs of the same length in the K DMRS sequences are The sequences use the same sequence.
- the K when the value of the K is greater than 1, the K is at least in one OFDM symbol.
- Each DMRS sequence in each DMRS sequence occupies different subcarriers in the same frequency domain bandwidth.
- the occupied subcarriers of the mth DMRS sequence in the K DMRS sequences are: (m+iK) subcarriers in the frequency domain bandwidth, where S is the number of subcarriers included in the frequency domain bandwidth.
- the K 2
- the first DMRS sequence of the K DMRS sequences are occupied by
- the subcarrier is the (n+jN)th subcarrier in the frequency domain bandwidth
- the second DMRS sequence occupies other subcarriers in the frequency domain bandwidth, where N is a positive integer greater than 1, and n is a positive integer less than or equal to N.
- each DMRS sequence in the at least one DMRS sequence of the K DMRS sequences is in a different OFDM symbol It occupies different subcarriers.
- the terminal device determines a quantity K of DMRS sequences corresponding to the first DMRS port, and K DMRS sequences Physical resources occupied by each DMRS sequence, including:
- the terminal device determines, according to the quantity K, a resource offset between physical resources occupied by different DMRS sequences in the K DMRS sequences.
- a wireless communication method including:
- the network device determines the number K of DMRS sequences transmitted by the terminal device by using the first demodulation reference signal DMRS port, and the physical resources occupied by each of the K DMRS sequences;
- the network device determines the number K of DMRS sequences sent by the terminal device by using the first demodulation reference signal DMRS port, and each of the K DMRS sequences Physical resources occupied by the DMRS sequence, including:
- the network device Determining, according to the multiple access mode used by the terminal device to send the DMRS sequence by using the first DMRS port, the network device determining the number K of DMRS sequences sent by the terminal device by using the first DMRS port, and/or Physical resources occupied by each of the K DMRS sequences.
- the network device determines the number K of DMRS sequences sent by the terminal device by using the first DMRS port, including:
- the first correspondence is used to indicate the number of DMRS sequences corresponding to the first DMRS port in each multiple access mode in at least one multiple access mode.
- the using, by the terminal device, the DMRS sequence by using the first DMRS port The network device determines the physical resources occupied by each of the K DMRS sequences, including:
- the second correspondence is used to indicate a physical resource corresponding to each DMRS sequence in the at least one DMRS sequence corresponding to the first DMRS port in each of the at least one multiple access mode.
- the method further includes:
- the network device indicates the number K of DMRS sequences corresponding to the DMRS port to the terminal device by scheduling DMRS sequence indication information carried by the downlink control information DCI of the data transmission corresponding to the DMRS sequence.
- the K is an integer greater than 1;
- the K is 1.
- the K is an integer greater than 1.
- the K when the value of the K is greater than 1, at least in one OFDM symbol, the K Each DMRS sequence in the DMRS sequence occupies different subcarriers in the same frequency domain bandwidth, respectively.
- each DMRS sequence in at least one of the K DMRS sequences occupies different subcarriers in different OFDM symbols.
- a terminal device which can include means for implementing the method of the first aspect described above or any of its possible implementations.
- a network device which may comprise means for implementing the method of the second aspect or any of its possible implementations.
- a terminal device in a fifth aspect, can include a memory and a processor, the memory storing instructions for invoking instructions stored in the memory to perform the first aspect or any optional implementation thereof Methods.
- a network device in a sixth aspect, can include a memory and a processor, the memory storing instructions for invoking instructions stored in the memory to perform the second aspect or any optional implementation thereof Methods.
- a computer readable medium storing program code for execution by a terminal device, the program code comprising instructions for performing the method of the first aspect or various implementations thereof Or include instructions for performing the method of the second aspect or its various implementations.
- a system chip comprising an input interface, an output interface, a processor, and a memory
- the processor is configured to execute code in the memory, and when the code is executed, the processor can implement the foregoing The method of the first aspect and various implementations, or the method of the second aspect and various implementations described above.
- the number of DMRS sequences corresponding to one DMRS port may not be unique, and may be flexibly changed, for example, may be set according to multiple access modes adopted by multiple terminal devices that need orthogonal multiplexing, thereby Multi-user orthogonal multiplexing of terminal devices using different multiple access methods can be supported. Further, since the number of DMRS sequences corresponding to one DMRS port and the resources occupied by each sequence can be flexibly changed, the root sequence and/or the corresponding DMRS sequence of the terminal device using different multiple access modes may be implemented. The occupied physical resources are the same, so that the terminal devices adopting different multiple access modes can obtain DMRS orthogonality by using different cyclic shifts, thereby realizing multi-user multiplex transmission supporting more terminal devices.
- FIG. 1 is a schematic diagram of a wireless communication system in accordance with an embodiment of the present application.
- FIG. 2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application.
- FIG. 3 is a schematic diagram of resource occupancy of a DMRS sequence according to an embodiment of the present application.
- FIG. 4 is a schematic diagram of resource occupancy of a DMRS sequence according to an embodiment of the present application.
- FIG. 5 is a schematic diagram of resource occupancy of a DMRS sequence according to an embodiment of the present application.
- FIG. 6 is a schematic diagram of resource occupancy of a DMRS sequence according to an embodiment of the present application.
- FIG. 7 is a schematic diagram of resource occupancy of a DMRS sequence according to an embodiment of the present application.
- FIG. 8 is a schematic diagram of resource occupancy of a DMRS sequence according to an embodiment of the present application.
- FIG. 9 is a schematic diagram of resource occupancy of a DMRS sequence according to an embodiment of the present application.
- FIG. 10 is a schematic block diagram of a terminal device according to an embodiment of the present application.
- FIG. 11 is a schematic block diagram of a network device in accordance with an embodiment of the present application.
- FIG. 12 is a schematic block diagram of a communication device in accordance with an embodiment of the present application.
- FIG. 13 is a schematic block diagram of a system chip in accordance with an embodiment of the present application.
- GSM Global System of Mobile communication
- CDMA Code Division Multiple Access
- WCDMA Wideband Code Division Multiple Access
- GPRS General Packet Radio Service
- LTE Long Term Evolution
- FDD Frequency Division Duplex
- TDD Time Division Duplex
- UMTS Universal Mobile Telecommunication System
- FIG. 1 shows a wireless communication system 100 to which an embodiment of the present application is applied.
- the wireless communication system 100 can include a network device 110.
- Network device 100 can be a device that communicates with a terminal device.
- Network device 100 may provide communication coverage for a particular geographic area and may communicate with terminal devices (e.g., UEs) located within the coverage area.
- the network device 100 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, or may be a base station (NodeB, NB) in a WCDMA system, or may be an evolved base station in an LTE system.
- BTS Base Transceiver Station
- NodeB NodeB
- the network device can be a relay station, an access point, an in-vehicle device, a wearable device, A network side device in a future 5G network or a network device in a publicly available Public Land Mobile Network (PLMN) in the future.
- PLMN Public Land Mobile Network
- the wireless communication system 100 also includes at least one terminal device 120 located within the coverage of the network device 110.
- Terminal device 120 can be mobile or fixed.
- the terminal device 120 may refer to an access terminal, a user equipment (User Equipment, UE), a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, and a wireless communication.
- the access terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication.
- the 5G system or network may also be referred to as a New Radio (NR) system or network.
- NR New Radio
- FIG. 1 exemplarily shows one network device and two terminal devices.
- the wireless communication system 100 may include a plurality of network devices and may include other numbers of terminal devices within the coverage of each network device. The application embodiment does not limit this.
- the wireless communication system 100 may further include other network entities, such as a network controller, a mobility management entity, and the like.
- network entities such as a network controller, a mobility management entity, and the like.
- FIG. 2 is a schematic flowchart of a wireless communication method 200 according to an embodiment of the present application.
- the method 200 can optionally be used in the wireless communication system 100 described above.
- the method 200 includes the following.
- the terminal device determines the number K of DMRS sequences corresponding to the first DMRS port, and the physical resources occupied by each DMRS sequence in the K DMRS sequences, where K is a positive integer.
- K may be equal to 1, or K may be greater than 1, such as 2, 3, 4 or 6, and the like.
- the first DMRS port is one of the N DMRS ports currently used by the terminal device.
- the DMRS sequences transmitted by the N DMRS ports may occupy the same physical resource, but adopt different cyclic shifts.
- the number of DMRS sequences corresponding to different DMRS ports may be the same or different.
- the physical resources occupied by the DMRS sequence may include time domain resources, frequency domain resources, and/or air domain resources.
- the terminal device may determine the number K of DMRS sequences corresponding to the first DMRS port and the physical resources occupied by each DMRS sequence in the K DMRS sequences in multiple manners.
- the terminal device may determine the number K of DMRS sequences corresponding to the first DMRS port according to the DMRS sequence indication information that is sent by the network device by scheduling the downlink control information DCI of the data transmission corresponding to the DMRS sequence.
- the terminal device determines the number K of DMRS sequences corresponding to the first DMRS port according to the multiple access manner used by the first DMRS port to send the DMRS sequence, and/or the K DMRS sequences.
- the DMRS resource patterns corresponding to different multiple access modes may be different.
- the terminal device may determine the number K of DMRS sequences corresponding to the first DMRS port according to the first correspondence and the multiple access manner used, where the first correspondence is used to indicate that in at least one multiple access mode In each multiple access mode, the first DMRS port corresponds to The number of DMRS sequences.
- the terminal device may determine the physical resource occupied by each DMRS sequence in the K DMRS sequences according to the second correspondence and the multiple access manner used, where the second correspondence is used to indicate that the at least one multiple access mode is used. In each of the multiple access modes, the physical resources corresponding to each DMRS sequence in the at least one DMRS sequence corresponding to the first DMRS port.
- the first correspondence relationship and/or the second correspondence relationship may be notified by the network device to the terminal device, or may be pre-configured by the terminal device, or may be pre-agreed by the terminal device and the network device.
- the terminal device may determine the quantity K according to the multiple access manner adopted, and does not determine the physical resources occupied by the K sequences according to the multiple access manner, wherein the physical resources of each sequence may be preset, or the network Device configuration.
- the terminal device may determine the quantity K according to the DCI sent by the network device, and determine the physical resource occupied by each sequence in the K sequences according to the multiple access manner adopted.
- the K is 1.
- the terminal device may transmit only one DMRS sequence.
- the DMRS sequence may use a discrete resource unit (Resource Element, RE), and the DMRS sequence occupies part of the subcarriers on the OFDM symbol for transmitting the DMRS, and other subcarriers may be used for transmitting data.
- RE resource Element
- the K may also be greater than 1.
- the K is an integer greater than 1.
- the DMRS sequence sent by each terminal device has at least one DMRS sequence and at least one DMRS of other terminal devices.
- the sequence occupies the same physical resource and/or the same root sequence.
- the DMRS sequence sent by the multiple access modes selected by the terminal device has at least one DMRS sequence and the DMRS generated by selecting another multiple access mode. At least one DMRS sequence in the sequence occupies the same physical resource and/or the same root sequence.
- the K The DMRS sequence includes a first DMRS sequence, where the first DMRS sequence and the second DMRS sequence transmitted by using the same DMRS port occupy the same physical resource and/or the same when the multiple access mode is CP-OFDM multiple access mode The root sequence.
- the K DMRS sequences include a first DMRS sequence, wherein the first DMRS sequence and the terminal device utilize CP-OFDM multiple access
- the second DMRS sequence transmitted by using the same DMRS port occupies the same physical resource and/or adopts the same root sequence.
- the K DMRS sequences include a first DMRS sequence, where the first DMRS sequence and the other terminal device use the CP-OFDM multiple access mode
- the second DMRS sequence transmitted using the same DMRS port occupies the same physical resource and/or uses the same root sequence.
- the K DMRS sequences include a second DMRS sequence, where the second DMRS sequence and the adopted multiple access mode are DFT-S- In the OFDM multiple access mode, the first DMRS sequence of the multiple DMRS sequences transmitted by using the same DMRS port occupies the same physical resource and/or uses the same root sequence.
- the K DMRS sequences include a second DMRS sequence, wherein the second DMRS sequence and the terminal device utilize DFT-S-OFDM multiple access
- the first DMRS sequence in the multiple DMRS sequences transmitted by using the same DMRS port occupies the same physical resource and/or uses the same root sequence.
- the K DMRS sequences include a second DMRS sequence, where the second DMRS sequence and other terminal devices adopt DFT-S-OFDM
- the first DMRS sequence of the multiple DMRS sequences transmitted by using the same DMRS port occupies the same physical resource and/or the same root sequence.
- the embodiment of the present application is a case where the multiple access mode is used for the CP-OFDM multiple access mode and the DFT-S-OFDM multiple access mode, but the multiple access mode of the embodiment of the present application may also be other multiple access modes.
- the application does not specifically limit this.
- determining the number of DMRS sequences sent by one DMRS port and/or the resources of each DMRS sequence according to the multiple access manner may enable at least one DMRS sequence of terminal devices adopting different multiple access modes.
- the occupied physical resources are the same and/or the root sequence used is the same, so that the terminal devices adopting different multiple access modes can obtain DMRS orthogonality by using different cyclic shifts, thereby realizing flexible multi-user multiplexing transmission.
- each of the K DMRS sequences occupies different subcarriers in the same frequency domain bandwidth, respectively, in at least one OFDM symbol.
- the same frequency domain bandwidth may be a transmission bandwidth of data corresponding to the DMRS sequence.
- the occupied subcarriers of the mth DMRS sequence in the K DMRS sequences are: (m+iK)th subcarriers in the frequency domain bandwidth, where S is the number of subcarriers included in the frequency domain bandwidth.
- the K 2
- the subcarrier occupied by the first DMRS sequence in the K DMRS sequences is the (n+jN)th subcarrier in the frequency domain bandwidth
- the second DMRS sequence is occupied.
- Other subcarriers in the frequency domain bandwidth where N is a positive integer greater than 1, and n is a positive integer less than or equal to N.
- n or N may be notified by the network device to the terminal device through downlink signaling, or a preset value in the network device and the terminal device.
- the network device may indicate the value to the terminal device by scheduling the DCI of the data transmission corresponding to the DMRS, or pre-configure to the terminal device by using the high layer signaling.
- n and N may adopt different value obtaining manners, for example, n may be indicated to the terminal device by using the DCI, and N may be a preset fixed value in the terminal device and the network device.
- each DMRS sequence in at least one of the K DMRS sequences occupies different subcarriers in different OFDM symbols.
- the subcarriers occupied by the same DMRS subsequence in different OFDM symbols may adopt a fixed subcarrier offset, or the same DMRS subsequence may adopt different frequency domain densities in different OFDM symbols.
- the DMRS sequences of the same length in the K DMRS sequences adopt the same sequence.
- it may be a ZC (Zadoff-Chu) sequence generated by the same sequence length and the same root sequence ID, so that the peak-to-average ratio can be effectively reduced compared to using different sequences.
- ZC Zero-Chu
- the terminal device determines the number K of DMRS sequences corresponding to the first DMRS port; When the K is greater than 1, the terminal device determines, according to the quantity K, a resource offset between physical resources occupied by different DMRS sequences in the K DMRS sequences.
- the terminal device may determine, according to the value of K, that the resource offset is a value in ⁇ 0, 1, . . . , K-1 ⁇ .
- the resource offset may be a time domain resource offset or a frequency domain resource offset.
- physical resources of different sub-sequences may be offset by n subcarriers, or offset by n OFDM symbols, where n is an integer greater than or equal to 0 and less than K.
- the terminal device on the determined physical resource occupied by each DMRS sequence, the terminal device sends the each DMRS sequence to the network device by using the first DMRS port.
- the network device determines the number K of DMRS sequences transmitted by the terminal device using the first demodulation reference signal DMRS port, and the physical resources occupied by each of the K DMRS sequences.
- the network device determines, according to the first DMRS port, the multiple access mode used by the DMRS sequence, the network device determines the number K of DMRS sequences sent by the terminal device by using the first DMRS port, and/or the K The physical resources occupied by each DMRS sequence in the DMRS sequence.
- the network device determines, according to the first correspondence relationship and the multiple access manner adopted by the terminal device, the number K of DMRS sequences sent by the terminal device by using the first DMRS port, where the first correspondence is used to indicate at least one The number of DMRS sequences corresponding to the first DMRS port in each multiple access mode in the multiple access mode.
- the network device Determining, by the network device, a physical resource occupied by each DMRS sequence in the K DMRS sequences, where the second correspondence is used to indicate that the at least one multiple access mode is used according to the second correspondence and the multiple access mode used by the terminal device In each of the multiple access modes, the physical resources corresponding to each DMRS sequence in at least one DMRS sequence corresponding to the first DMRS port.
- the network device receives the each DMRS sequence sent by the terminal device.
- the number of DMRS sequences corresponding to one DMRS port may not be unique, and may be flexibly changed, for example, may be set according to multiple access modes adopted by multiple terminal devices that need orthogonal multiplexing, thereby Multi-user orthogonal multiplexing of terminal devices using different multiple access methods can be supported. Further, since the number of DMRS sequences corresponding to one DMRS port and the resources occupied by each sequence can be flexibly changed, the root sequence and/or the corresponding DMRS sequence of the terminal device using different multiple access modes may be implemented. Occupied object The resource resources are the same, so that the terminal devices adopting different multiple access modes can obtain DMRS orthogonality by using different cyclic shifts, thereby realizing multi-user multiplex transmission supporting more terminal devices.
- DFT-S-OFDM is taken as an example in a multiple access manner, and resources occupied by multiple DMRS sequences are described in conjunction with FIG. 4-9.
- the two DMRS sequences of the terminal device 1 occupy an odd subcarrier and an even subcarrier in one physical resource block (PRB), respectively.
- PRB physical resource block
- DMRS sequence 2 can be combined with DMRS sequence 1 to obtain better channel estimation performance.
- sequences of the two DMRS sequences may be the same.
- one DMRS sequence in FIG. 4 can occupy the same subcarrier in two OFDM symbols
- one DMRS sequence in FIG. 5 occupies different subcarriers in two OFDM symbols and adopt different densities.
- the terminal device 2 in the CP-OFDM multiple access mode may adopt the DMRS resource occupation mode as shown in FIG.
- the DMRS sequence 1 can obtain orthogonality by using a cyclic shift of the same root sequence different from the DMRS sequence of the terminal device 2.
- the sequence occupying the same resource in the DMRS sequence transmitted by the terminal device 1 and the terminal device 2 can obtain orthogonality by using cyclic shifts of the same root sequence.
- the four DMRS sequences of the terminal device 3 account for respectively.
- one DMRS sequence in FIG. 6 occupies the same subcarrier in two OFDM symbols
- one DMRS sequence in FIG. 7 occupies different subcarriers in two OFDM symbols, and adopts a fixed subcarrier offset.
- the orthogonality can be obtained by using the same root sequence different cyclic shifts as the DMRS sequence of the terminal device 4, and the DMRS subsequence ⁇ 2, 3, 4 ⁇ can be combined with the DMRS subsequence 1 to obtain better channel estimation performance.
- the DMRS resource of the terminal device adopting the CP-OFDM multiple access method supports offset in the frequency domain, it is not necessary to perform additional configuration on the terminal device adopting the DFT-S-OFDM multiple access method to ensure mutual mutual DMRS orthogonality between.
- the DMRS sequences occupy other subcarriers in the PRB.
- one DMRS sequence in FIG. 8 occupies the same subcarrier in two OFDM symbols
- one DMRS sequence in FIG. 9 occupies different subcarriers in two OFDM symbols, and adopts a fixed subcarrier offset.
- the resources occupied by the DMRS sequence sent by each terminal device and the comb can be flexibly set, thereby A terminal device that supports different multiple access methods obtains orthogonality by cyclic shifting, and thereby performs multi-user multiplexing.
- FIG. 10 is a schematic block diagram of a terminal device 300 according to an embodiment of the present application. As shown in FIG. 10, the terminal device 300 includes a processing unit 310 and a transmitting unit 320.
- the processing unit 310 is configured to determine a corresponding DMRS port of the first demodulation reference signal. a quantity K of the DMRS sequence, and a physical resource occupied by each of the DMRS sequences, wherein K is a positive integer; and a transmitting unit 320, configured to: physics occupied by each of the DMRS sequences determined by the processing unit Resources, using the first DMRS port, send each of the DMRS sequences to a network device.
- processing unit 310 is further configured to:
- processing unit 310 is further configured to:
- the first correspondence is used to indicate the number of DMRS sequences corresponding to the first DMRS port in each multiple access mode in at least one multiple access mode.
- processing unit 310 is further configured to:
- the second correspondence is used to indicate, in each of the at least one multiple access mode, the physics corresponding to each DMRS sequence in the at least one DMRS sequence corresponding to the first DMRS port. Resources.
- the K DMRS sequences include a first DMRS sequence, where the first DMRS sequence
- the second DMRS sequence included in the DMRS sequence transmitted by using the same DMRS port in the second multiple access mode occupies the same physical resource and/or uses the same root sequence, wherein the second multiple access mode is different from the first Multiple access method.
- the first multiple access mode is a discrete Fourier transform spread spectrum orthogonal frequency division multiplexing DFT-S-OFDM multiple access mode
- the second multiple access mode is a cyclic prefix orthogonal frequency division complex Using CP-OFDM multiple access
- the first multiple access mode is a CP-OFDM multiple access mode
- the second multiple access mode is a DFT-S-OFDM multiple access mode
- the K is an integer greater than 1;
- the K is 1.
- processing unit 310 is further configured to:
- the K is an integer greater than one.
- the DMRS sequences of the same length in the K DMRS sequences adopt the same sequence.
- each of the K DMRS sequences occupies different subcarriers in the same frequency domain bandwidth, respectively, in at least one OFDM symbol.
- the occupied subcarriers of the mth DMRS sequence in the K DMRS sequences are: (m+iK)th subcarriers in the frequency domain bandwidth, where S is the number of subcarriers included in the frequency domain bandwidth.
- the K 2
- the subcarrier occupied by the first DMRS sequence in the K DMRS sequences is the (n+jN)th subcarrier in the frequency domain bandwidth, and the second DMRS sequence is occupied.
- Other subcarriers in the frequency domain bandwidth where N is a positive integer greater than 1, and n is a positive integer less than or equal to N.
- each DMRS sequence in at least one of the K DMRS sequences occupies different subcarriers in different OFDM symbols.
- processing unit 310 is further configured to:
- a resource offset between physical resources occupied by different DMRS sequences in the K DMRS sequences is determined according to the quantity K.
- terminal device 300 may correspond to the terminal device in the method 200, and the corresponding functions of the terminal device in the method 200 may be implemented. For brevity, details are not described herein again.
- FIG. 11 is a schematic block diagram of a network device 400 in accordance with an embodiment of the present application. As shown in FIG. 11, the network device includes a processing unit 410 and a transceiver unit 420.
- the processing unit 410 is configured to determine that the terminal device uses the first demodulation reference signal DMRS.
- the number of the DMRS sequences sent by the port, and the physical resources occupied by each of the DMRS sequences; the transceiver unit 420 is configured to receive the terminal device on the determined physical resources occupied by each of the DMRS sequences.
- processing unit 410 is further configured to:
- processing unit 410 is further configured to:
- the first correspondence is used to indicate the number of DMRS sequences corresponding to the first DMRS port in each multiple access mode in at least one multiple access mode.
- processing unit 410 is further configured to:
- the second correspondence is used to indicate a physical resource corresponding to each DMRS sequence in the at least one DMRS sequence corresponding to the first DMRS port in each of the at least one multiple access mode.
- the transceiver unit 420 is further configured to:
- the DMRS sequence indication information carried in the downlink control information DCI of the data transmission corresponding to the DMRS sequence is scheduled, and the number K of DMRS sequences corresponding to the DMRS port is indicated to the terminal device.
- the K is an integer greater than 1;
- the K is 1.
- the K is an integer greater than one.
- the Each of the K DMRS sequences occupies different subcarriers in the same frequency domain bandwidth, respectively.
- each DMRS sequence in at least one of the K DMRS sequences occupies different subcarriers in different OFDM symbols.
- the network device 400 may correspond to the network device in the method 200, and the corresponding functions of the network device in the method 200 may be implemented. For brevity, no further details are provided herein.
- FIG. 12 is a schematic block diagram of a communication device 500 in accordance with an embodiment of the present application.
- the communication device 500 includes a processor 510 and a memory 520.
- the memory 520 can store program code, and the processor 510 can execute the program code stored in the memory 520.
- the communication device 500 can include a transceiver 530 that can control the transceiver 530 to communicate externally.
- the processor 510 can call the program code stored in the memory 520 to perform the corresponding operations of the terminal device in the method 200 shown in FIG. 2, and details are not described herein for brevity.
- the processor 510 can execute the corresponding operation of the network device in the method 200 shown in FIG. 2 by calling the program code stored in the memory 520.
- the processor 510 can execute the corresponding operation of the network device in the method 200 shown in FIG. 2 by calling the program code stored in the memory 520.
- FIG. 13 is a schematic structural diagram of a system chip 600 according to an embodiment of the present application.
- the system chip 600 of FIG. 13 includes an input interface 601, an output interface 602, the processor 603, and a memory 604 connected by a communication connection, and the processor 603 is configured to execute code in the memory 604.
- the processor 603 implements the method performed by the terminal device in the method 200 shown in FIG. 2. For the sake of brevity, it will not be repeated here.
- the processor 603 when the code is executed, the processor 603 implements the method performed by the network device in the method 200 shown in FIG. 2. For the sake of brevity, it will not be repeated here.
- the disclosed systems, devices, and methods may be implemented in other manners.
- the device embodiments described above are merely illustrative.
- the division of the unit is only a logical function division.
- there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
- the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
- the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.
- each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
- the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product.
- the technical solution of the present application which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including
- the instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application.
- the foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like. .
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Abstract
Description
Claims (48)
- 一种无线通信方法,其特征在于,包括:终端设备确定第一解调参考信号DMRS端口对应的DMRS序列的数量K,以及K个DMRS序列中每个DMRS序列占用的物理资源,其中,K为正整数;在确定的所述每个DMRS序列占用的物理资源上,利用所述第一DMRS端口,向网络设备发送所述每个DMRS序列。
- 根据权利要求1所述的方法,其特征在于,所述终端设备确定第一DMRS端口对应的DMRS序列的数量K,以及K个DMRS序列中每个DMRS序列占用的物理资源,包括:根据利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,所述终端设备确定所述第一DMRS端口对应的DMRS序列的数量K,和/或所述K个DMRS序列中每个DMRS序列占用的物理资源。
- 根据权利要求2所述的方法,其特征在于,所述根据利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,所述终端设备确定所述第一DMRS端口对应的DMRS序列的数量K,包括:根据第一对应关系以及利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,确定所述第一DMRS端口对应的DMRS序列的数量K;其中,所述第一对应关系用于指示在至少一种多址方式中每种多址方式下,所述第一DMRS端口对应的DMRS序列的数量。
- 根据权利要求2或3所述的方法,其特征在于,所述根据利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,所述终端设备确定所述K个DMRS序列中每个DMRS序列占用的物理资源,包括:根据第二对应关系以及所述利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,确定所述K个DMRS序列中每个DMRS序列占用的物理资源;其中,所述第二对应关系用于指示在所述至少一种多址方式中的每种多址方式下,所述第一DMRS端口对应的至少一个DMRS序列中,每个DMRS序列对应的物理资源。
- 根据权利要求2至4中任一项所述的方法,其特征在于,在利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为第一多址方式时, 所述K个DMRS序列包括第一DMRS序列,其中,所述第一DMRS序列与采用第二多址方式时利用同一DMRS端口传输DMRS序列包括的第二DMRS序列占用相同的物理资源和/或采用相同的根序列,其中,所述第二多址方式不同于所述第一多址方式。
- 根据权利要求5所述的方法,其特征在于,所述第一多址方式为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM多址方式,所述第二多址方式为循环前缀正交频分复用CP-OFDM多址方式;或,所述第一多址方式为CP-OFDM多址方式,所述第二多址方式为DFT-S-OFDM多址方式。
- 根据权利要求2至6中任一项所述的方法,其特征在于,在利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为DFT-S-OFDM多址方式时,所述K为大于1的整数;和/或,在利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为CP-OFDM多址方式时,所述K为1。
- 根据权利要求1所述的方法,其特征在于,终端设备确定第一解调参考信号DMRS端口对应的DMRS序列的数量K,包括:所述终端设备根据网络设备通过调度所述DMRS序列对应的数据传输的下行控制信息DCI携带的DMRS序列指示信息,确定所述第一DMRS端口对应的DMRS序列的数量K。
- 根据权利要求1至8中任一项所述的方法,其特征在于,所述K为大于1的整数。
- 根据权利要求1至9中任一项所述的方法,其特征在于,在所述K的取值大于1时,所述K个DMRS序列中长度相同的DMRS序列采用相同的序列。
- 根据权利要求1至10中任一项所述的方法,其特征在于,在所述K的取值大于1时,则至少在一个OFDM符号中,所述K个DMRS序列中每个DMRS序列分别占用相同的频域带宽中的不同的子载波。
- 根据权利要求1至13中任一项所述的方法,其特征在于,所述K个DMRS序列中的至少一个DMRS序列中每个DMRS序列在不同的OFDM符号中占用不同的子载波。
- 根据权利要求1至14中任一项所述的方法,其特征在于,所述终端设备确定第一DMRS端口对应的DMRS序列的数量K,以及K个DMRS序列中每个DMRS序列占用的物理资源,包括:所述终端设备确定第一DMRS端口对应的DMRS序列的数量K;在所述K大于1时,所述终端设备根据所述数量K,确定所述K个DMRS序列中不同DMRS序列占用的物理资源之间的资源偏移。
- 一种无线通信方法,其特征在于,包括:网络设备确定终端设备利用第一解调参考信号DMRS端口发送的DMRS序列的数量K,以及K个DMRS序列中每个DMRS序列占用的物理资源;在确定的所述每个DMRS序列占用的物理资源上,接收所述终端设备发送的所述每个DMRS序列。
- 根据权利要求16所述的方法,其特征在于,所述网络设备确定终端设备利用第一解调参考信号DMRS端口发送的DMRS序列的数量K,以及K个DMRS序列中每个DMRS序列占用的物理资源,包括:根据所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,所述网络设备确定所述终端设备利用所述第一DMRS端口发送的DMRS序列的数量K,和/或所述K个DMRS序列中每个DMRS序列占用的物理资源。
- 根据权利要求17所述的方法,其特征在于,所述根据所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的第一多址方式,所述网络设备确定所述终端设备利用所述第一DMRS端口发送的DMRS序列的数量K,包括:根据第一对应关系以及所述终端设备利用所述第一DMRS端口发送所 述DMRS序列采用的多址方式,确定所述终端设备利用第一DMRS端口发送的DMRS序列的数量K;其中,所述第一对应关系用于指示在至少一个多址方式中每个多址方式下,所述第一DMRS端口对应的DMRS序列的数量。
- 根据权利要求17或18所述的方法,其特征在于,所述根据所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,所述网络设备确定所述K个DMRS序列中每个DMRS序列占用的物理资源,包括:根据第二对应关系以及所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,确定所述K个DMRS序列中每个DMRS序列占用的物理资源;其中,所述第二对应关系用于指示在所述至少一个多址方式中的每个多址方式下,所述第一DMRS端口对应的至少一个DMRS序列中,每个DMRS序列对应的物理资源。
- 根据权利要求16所述的方法,其特征在于,所述方法还包括:所述网络设备通过调度所述DMRS序列对应的数据传输的下行控制信息DCI携带的DMRS序列指示信息,向所述终端设备指示所述DMRS端口对应的DMRS序列的数量K。
- 根据权利要求17至19中任一项所述的方法,其特征在于,在所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为DFT-S-OFDM多址方式时,所述K为大于1的整数;和/或,在所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为CP-OFDM多址方式时,所述K为1。
- 根据权利要求16至21中任一项所述的方法,其特征在于,所述K为大于1的整数。
- 根据权利要求16至22中任一项所述的方法,其特征在于,在所述K的取值大于1时,至少在一个OFDM符号中,所述K个DMRS序列中每个DMRS序列分别占用相同的频域带宽中的不同的子载波。
- 根据权利要求16至23中任一项所述的方法,其特征在于,所述K个DMRS序列中的至少一个DMRS序列中每个DMRS序列在不同的OFDM符号中占用不同的子载波。
- 一种终端设备,其特征在于,包括:处理单元,用于确定第一解调参考信号DMRS端口对应的DMRS序列的数量K,以及K个DMRS序列中每个DMRS序列占用的物理资源,其中,K为正整数;发送单元,用于在所述处理单元确定的所述每个DMRS序列占用的物理资源上,利用所述第一DMRS端口,向网络设备发送所述每个DMRS序列。
- 根据权利要求25所述的终端设备,其特征在于,所述处理单元进一步用于:根据利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,确定所述第一DMRS端口对应的DMRS序列的数量K,和/或所述K个DMRS序列中每个DMRS序列占用的物理资源。
- 根据权利要求26所述的终端设备,其特征在于,所述处理单元进一步用于:根据第一对应关系以及利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,确定所述第一DMRS端口对应的DMRS序列的数量K;其中,所述第一对应关系用于指示在至少一种多址方式中每种多址方式下,所述第一DMRS端口对应的DMRS序列的数量。
- 根据权利要求26或27所述的终端设备,其特征在于,所述处理单元进一步用于:根据第二对应关系以及所述利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,确定所述K个DMRS序列中每个DMRS序列占用的物理资源;其中,所述第二对应关系用于指示在所述至少一种多址方式中的每种多址方式下,所述第一DMRS端口对应的至少一个DMRS序列中,每个DMRS序列对应的物理资源。
- 根据权利要求26至28中任一项所述的终端设备,其特征在于,在利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为第一多址方式时,所述K个DMRS序列包括第一DMRS序列,其中,所述第一DMRS序列与采用第二多址方式时利用同一DMRS端口传输DMRS序列包括的第二DMRS序列占用相同的物理资源和/或采用相同的根序列,其中,所述第 二多址方式不同于所述第一多址方式。
- 根据权利要求29所述的终端设备,其特征在于,所述第一多址方式为离散傅里叶变换扩频的正交频分复用DFT-S-OFDM多址方式,所述第二多址方式为循环前缀正交频分复用CP-OFDM多址方式;或,所述第一多址方式为CP-OFDM多址方式,所述第二多址方式为DFT-S-OFDM多址方式。
- 根据权利要求26至30中任一项所述的终端设备,其特征在于,在利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为DFT-S-OFDM多址方式时,所述K为大于1的整数;和/或,在利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为CP-OFDM多址方式时,所述K为1。
- 根据权利要求25所述的终端设备,其特征在于,所述处理单元进一步用于:根据网络设备通过调度所述DMRS序列对应的数据传输的下行控制信息DCI携带的DMRS序列指示信息,确定所述第一DMRS端口对应的DMRS序列的数量K。
- 根据权利要求25至32中任一项所述的终端设备,其特征在于,所述K为大于1的整数。
- 根据权利要求25至33中任一项所述的终端设备,其特征在于,在所述K的取值大于1时,所述K个DMRS序列中长度相同的DMRS序列采用相同的序列。
- 根据权利要求25至34中任一项所述的终端设备,其特征在于,在所述K的取值大于1时,则至少在一个OFDM符号中,所述K个DMRS序列中每个DMRS序列分别占用相同的频域带宽中的不同的子载波。
- 根据权利要求25至37中任一项所述的终端设备,其特征在于,所述K个DMRS序列中的至少一个DMRS序列中每个DMRS序列在不同的OFDM符号中占用不同的子载波。
- 根据权利要求25至38中任一项所述的终端设备,其特征在于,所述处理单元进一步用于:确定第一DMRS端口对应的DMRS序列的数量K;在所述K大于1时,根据所述数量K,确定所述K个DMRS序列中不同DMRS序列占用的物理资源之间的资源偏移。
- 一种网络设备,其特征在于,包括:处理单元,用于确定终端设备利用第一解调参考信号DMRS端口发送的DMRS序列的数量K,以及K个DMRS序列中每个DMRS序列占用的物理资源;收发单元,用于在确定的所述每个DMRS序列占用的物理资源上,接收所述终端设备发送的所述每个DMRS序列。
- 根据权利要求40所述的网络设备,其特征在于,所述处理单元进一步用于:根据所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,确定所述终端设备利用所述第一DMRS端口发送的DMRS序列的数量K,和/或所述K个DMRS序列中每个DMRS序列占用的物理资源。
- 根据权利要求41所述的网络设备,其特征在于,所述处理单元进一步用于:根据第一对应关系以及所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式,确定所述终端设备利用第一DMRS端口发送的DMRS序列的数量K;其中,所述第一对应关系用于指示在至少一个多址方式中每个多址方式下,所述第一DMRS端口对应的DMRS序列的数量。
- 根据权利要求41或42所述的网络设备,其特征在于,所述处理单元进一步用于:根据第二对应关系以及所述终端设备利用所述第一DMRS端口发送所 述DMRS序列采用的多址方式,确定所述K个DMRS序列中每个DMRS序列占用的物理资源;其中,所述第二对应关系用于指示在所述至少一个多址方式中的每个多址方式下,所述第一DMRS端口对应的至少一个DMRS序列中,每个DMRS序列对应的物理资源。
- 根据权利要求40所述的网络设备,其特征在于,所述收发单元进一步用于:通过调度所述DMRS序列对应的数据传输的下行控制信息DCI携带的DMRS序列指示信息,向所述终端设备指示所述DMRS端口对应的DMRS序列的数量K。
- 根据权利要求41至43中任一项所述的网络设备,其特征在于,在所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为DFT-S-OFDM多址方式时,所述K为大于1的整数;和/或,在所述终端设备利用所述第一DMRS端口发送所述DMRS序列采用的多址方式为CP-OFDM多址方式时,所述K为1。
- 根据权利要求40至45中任一项所述的网络设备,其特征在于,所述K为大于1的整数。
- 根据权利要求40至46中任一项所述的网络设备,其特征在于,在所述K的取值大于1时,至少在一个OFDM符号中,所述K个DMRS序列中每个DMRS序列分别占用相同的频域带宽中的不同的子载波。
- 根据权利要求40至47中任一项所述的网络设备,其特征在于,所述K个DMRS序列中的至少一个DMRS序列中每个DMRS序列在不同的OFDM符号中占用不同的子载波。
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BR112019016337A2 (pt) | 2020-03-31 |
US20190363851A1 (en) | 2019-11-28 |
EP3573396A1 (en) | 2019-11-27 |
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