WO2019029346A1 - Procédé d'émission de signal de référence et dispositif de communication - Google Patents

Procédé d'émission de signal de référence et dispositif de communication Download PDF

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Publication number
WO2019029346A1
WO2019029346A1 PCT/CN2018/096587 CN2018096587W WO2019029346A1 WO 2019029346 A1 WO2019029346 A1 WO 2019029346A1 CN 2018096587 W CN2018096587 W CN 2018096587W WO 2019029346 A1 WO2019029346 A1 WO 2019029346A1
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WIPO (PCT)
Prior art keywords
reference signal
network device
antenna port
indication information
terminal device
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PCT/CN2018/096587
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English (en)
Chinese (zh)
Inventor
黄煌
高宽栋
颜矛
张希
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华为技术有限公司
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Publication of WO2019029346A1 publication Critical patent/WO2019029346A1/fr

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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
    • 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
    • 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

Definitions

  • Beamforming techniques are used to limit the energy of the transmitted signal to a certain beam direction, thereby increasing signal and reception efficiency.
  • Beamforming technology can effectively expand the transmission range of wireless signals and reduce signal interference, thereby achieving higher communication efficiency and higher network capacity.
  • it is first necessary to match the transmit beam and the receive beam so that the gain from the sender to the receiver is maximized, otherwise a relatively high communication efficiency cannot be obtained.
  • the network device side is required to scan the beam. Beam scanning will bring many problems, one of which is the increased overhead of broadcast information transmission.
  • the NR system defines a plurality of SS burst set periods, which may be, for example, 5ms, 10ms, 20ms, 40ms, 80ms or 160ms.
  • the network device can select the period to be transmitted as needed.
  • a plurality of sync blocks (SS blocks) constitute one SS burst
  • a plurality of SS bursts constitute an SS burst set.
  • a sync block refers to a symbol combination of a Primary Synchronization Signal (PSS)-Physical Broadcast Channel (PBCH)-Secondary Synchronization Signal (SSS)-PBCH, and the PSS and the SSS respectively occupy With 144 subcarriers, the PSCH occupies 288 carriers.
  • PSS Primary Synchronization Signal
  • PBCH Physical Broadcast Channel
  • SSS Secondary Synchronization Signal
  • Each PBCH symbol includes a Demodulation Reference Signal (DMRS).
  • DMRS Demodulation Reference Signal
  • the prior art demodulates the DMRS in the PSCH adjacent to the PSS or SSS in the SS block by transmitting pilots in the bandwidth portion (ie, the adjacent bandwidth portion of the PSS and the SSS) that cannot be covered by the PSS or the SS in one SS block.
  • pilots in the bandwidth portion (ie, the adjacent bandwidth portion of the PSS and the SSS) that cannot be covered by the PSS or the SS in one SS block.
  • this scheme limits the need to use the same port as the transmitting SS block to transmit pilots. In this way, the implementation of the network device is limited, resulting in low spectral efficiency.
  • the present application provides a method and communication apparatus for transmitting a reference signal, which can improve spectral efficiency.
  • a method for transmitting a reference signal comprising:
  • the first network device sends the first indication information to the terminal device, where the first indication information is used to indicate that the first antenna port sent by the first network device or the second network device is the same as the second antenna port, where The first antenna port is for transmitting a sync block, and the second antenna port is for transmitting a reference signal.
  • the first network device sends the second indication information to the terminal device, where the second indication information is used to indicate a time domain, a frequency domain, a sequence, and a transmit power of the reference signal transmitted by the second port. At least one of them.
  • a method for transmitting a reference signal comprising:
  • first indication information that is sent by the first network device, where the first indication information is used to indicate that the first antenna port sent by the first network device or the second network device is the same as the second antenna port, where The first antenna port is for transmitting a synchronization block, and the second antenna port is for transmitting a reference signal.
  • the network device may further generate a synchronization block and a reference signal, where the synchronization block includes a physical broadcast channel PBCH, and the PBCH includes a demodulation reference signal DMRS, and the first resource particle occupied by the reference signal At least a portion of the resource particles RE in the RE are at the same frequency position as at least a portion of the resource particles RE of the second resource particles RE occupied by the DMRS.
  • the network device sends the synchronization block and the reference signal to the terminal device through the same antenna port.
  • the network device may be the first network device or the second network device.
  • the first network is set as a network device in a serving cell of the terminal device
  • the second network device is a terminal device of a neighboring cell of the serving cell of the terminal device. That is to say, the network device may send the synchronization block and the reference signal to the serving cell, and may also send the synchronization block and the reference signal to the neighboring cell of the serving cell of the network device.
  • the neighboring cell may be a cell that is in the immediate vicinity of the serving cell, or a cell that is separated from the serving cell by one or more cells, which is not limited in this embodiment of the present application.
  • a DMRS in the PBCH carries a time index of the synchronization block, and a time index of the synchronization block is used to determine a timing of a cell to which the synchronization block belongs.
  • the terminal device can acquire the SS block of the current cell and the neighboring cell.
  • the timing of the neighboring cell may be acquired according to the time index in the SS block.
  • the terminal device may perform cell handover according to the timing of the neighboring cell.
  • the first antenna port is the same as the second antenna port, and it can be understood that the Orthogonal Frequency Division Multiplexing (OFDM) symbol transmitted on the second antenna port and the first antenna port is The same channel is experienced during transmission. That is, the precoding and beamforming of the OFDM symbols transmitted on the first antenna port and the second antenna port are the same.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the network device can dynamically schedule any data and reference signals to be transmitted on the PSS/SSS adjacent bandwidth (ie, the second time-frequency resource). If the reference signal transmitted on the adjacent bandwidth can assist in the demodulation of the PBCH DMRS, the user is notified to demodulate the PBCH DMRS based on the reference signal. Therefore, embodiments of the present application can improve spectral efficiency.
  • the terminal device receives the second indication information that is sent by the network device, where the second indication information is used to indicate a time domain, a frequency domain, a sequence, and a transmit power of the reference signal transmitted by the second port. At least one of them.
  • the synchronization block includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH, where the reference resource transmitted by the second port occupies the first resource particle RE and the PSS or the The REs occupying the REs have the same time domain location and different frequency domain locations.
  • the reference signal transmitted by the second port is carried by the control resource set CORSET, the physical downlink control channel PDCCH, or the physical downlink data channel PDSCH.
  • the reference signal transmitted by the second port includes at least one of the following: DMRS, CSI-RS, PTRS, and TRS.
  • the second indication information may be notified to the terminal in an explicit or implicit manner.
  • the second indication information may have at least one bit for indicating at least one of a time domain, a frequency domain, a sequence, and a transmission power of the RS.
  • the base station can inform the terminal device of the specific signal used by the second time-frequency resource for transmission, and the terminal device can infer the specific signal of the reference signal according to the transmitted signal. Moreover, when the terminal device is notified in an implicit manner, the signaling overhead of the network device can be saved, and the resource utilization rate can be improved.
  • the reference signals After acquiring specific information of the reference signals, for example, the reference signals are used to demodulate the PBCH DMRS in the adjacent SS block to obtain information carried by the DMRS.
  • the PBCH includes a demodulation reference signal DMRS, where the second resource particle RE occupied by the DMRS included in the PBCH is different from the time domain of the RE occupied by the PSS or the SSS.
  • the location of the at least part of the first resource particle RE occupied by the reference signal transmitted by the second port and the frequency position of at least part of the second RE of the second RE occupied by the DMRS included in the PBCH the same.
  • the frequency position of at least part of the RS is the same as the frequency position of the PBCH DMRS, or the frequency position of all the PBCH DMRS REs is covered, so that the terminal device can better demodulate the PBCH DMRS according to the reference signal, and improve the channel to the DMRS RE.
  • the accuracy of the estimation further improves the demodulation performance of the DMRS sequence.
  • the frequency position of the part RE of the first resource is the same as the frequency position of the second RE;
  • the frequency position of the first RE is the same as the location of the partial RE in the second RE;
  • the frequency position of the first RE is the same as the location of the partial REs in the second RE.
  • the third aspect provides a communication device, which may be a network device.
  • the network device provided by the present application has a function for implementing the behavior of the network device in the first aspect of the foregoing method, and includes the steps described in the foregoing method or Functionally corresponding parts (means).
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the network device described above includes one or more processors and transceiver units.
  • the one or more processors are configured to support the network device to perform corresponding functions in the above methods.
  • the transceiver unit is configured to support the network device to communicate with other devices to implement a receiving/transmitting function.
  • the base station may further include one or more memories, where the memory is coupled to the processor, which stores necessary program instructions and data of the base station.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the network device may be a base station or a TRP
  • the transceiver unit may be a transceiver or a transceiver circuit.
  • the network device can also be a communication chip.
  • the transceiver unit may be an input/output circuit or interface of a communication chip.
  • the above network device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal
  • the memory is configured to store a computer program
  • the processor is configured to call and run the computer program from the memory, so that the network device performs the first aspect, the second aspect, and the first aspect A possible implementation or a method of network device completion in any of the possible implementations of the second aspect.
  • a fourth aspect of the present invention provides a communication device, which may be a terminal device.
  • the terminal device provided by the present application has a function for implementing the behavior of the terminal device in the second aspect of the foregoing method, and includes the steps described in the foregoing method or Functionally corresponding parts (means).
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the above terminal device includes one or more processors and transceiver units.
  • the transceiver unit is configured to support the terminal device to communicate with other devices to implement a receiving/transmitting function.
  • the one or more processors are configured to support the terminal device to perform a corresponding function in the above method.
  • the terminal device may further include one or more memories, and the memory is configured to be coupled to the processor, which stores necessary program instructions and data of the base station.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the terminal device may be a UE or the like, and the transceiver unit may be a transceiver or a transceiver circuit.
  • the terminal device can also be a communication chip.
  • the transceiver unit may be an input/output circuit or interface of a communication chip.
  • the above terminal device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal
  • the memory is configured to store a computer program
  • the processor is configured to call and run the computer program from the memory, so that the terminal device performs the first aspect, the second aspect, and the first aspect A possible implementation or a method of network device completion in any of the possible implementations of the second aspect.
  • a system comprising the above terminal device and a network device.
  • a computer program product comprising: a computer program (also referred to as a code, or an instruction) that, when executed, causes the computer to perform the first aspect, the second aspect described above.
  • a computer program also referred to as a code, or an instruction
  • a computer readable medium storing a computer program (which may also be referred to as a code, or an instruction), when executed on a computer, causes the computer to perform the first aspect, the second Aspect, the method of any of the possible implementations of the first aspect, or any one of the possible implementations of the second aspect.
  • a computer program which may also be referred to as a code, or an instruction
  • a method of transmitting a reference signal including:
  • the network device generates a synchronization block and a reference signal, wherein the synchronization block includes a physical broadcast channel PBCH, and the PBCH includes a demodulation reference signal DMRS, and at least a part of the resource particles RE of the first resource particle RE occupied by the reference signal And the frequency position of at least part of the resource particles RE in the second resource particle RE occupied by the DMRS is the same;
  • the network device sends the synchronization block and the reference signal to the terminal device through the same antenna port.
  • a method for transmitting a reference signal including:
  • the terminal device receives a synchronization block and a reference signal that are sent by the network device through the same antenna port, where the synchronization block includes a physical broadcast channel PBCH, and the PBCH includes a demodulation reference signal DMRS, and the first resource particle occupied by the reference signal At least a portion of the resource particles RE in the RE are at the same frequency position as at least a portion of the resource particles RE of the second resource particles RE occupied by the DMRS.
  • the frequency position of at least part of the RS is the same as the frequency position of the PBCH DMRS, or the frequency position of all the PBCH DMRS REs is covered, so that the terminal device can better demodulate the PBCH DMRS according to the reference signal, and improve the channel to the DMRS RE.
  • the accuracy of the estimation further improves the demodulation performance of the DMRS sequence.
  • the synchronization block further includes a primary synchronization signal PSS and a secondary synchronization signal SSS, where the first resource particle RE occupied by the reference signal and the time domain of the RE occupied by the PSS or the SSS are the same
  • the frequency domain location is different
  • the second resource particle RE occupied by the DMRS is different from the time domain location of the RE occupied by the PSS or the SSS, and the frequency domain location is different.
  • the frequency position of the part RE of the first resource is the same as the frequency position of the second RE;
  • the frequency position of the first RE is the same as the location of the partial RE in the second RE;
  • the frequency position of the first RE is the same as the location of the partial REs in the second RE.
  • the reference signal is carried by the control resource set CORSET, the physical downlink control channel PDCCH, or the physical downlink data channel PDSCH.
  • the reference signal is DMRS, CSI-RS, PTRS or TRS.
  • a tenth aspect provides a communication device, which may be a network device, where the network device provided by the present application has a function of implementing network device behavior in the foregoing ninth method aspect, and includes steps for performing the foregoing method or Functionally corresponding parts (means).
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the network device described above includes one or more processors and transceiver units.
  • the one or more processors are configured to support the network device to perform corresponding functions in the above methods.
  • the transceiver unit is configured to support the network device to communicate with other devices to implement a receiving/transmitting function.
  • the base station may further include one or more memories, where the memory is coupled to the processor, which stores necessary program instructions and data of the base station.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the network device may be a base station or a TRP
  • the transceiver unit may be a transceiver or a transceiver circuit.
  • the network device can also be a communication chip.
  • the transceiver unit may be an input/output circuit or interface of a communication chip.
  • the above network device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal
  • the memory is configured to store a computer program
  • the processor is configured to call and run the computer program from the memory, so that the network device performs the eighth aspect, the ninth aspect, and the eighth aspect A possible implementation or a method of network device completion in any of the possible implementations of the ninth aspect.
  • a communications device which may be a terminal device.
  • the terminal device provided by the present application has a function for implementing the behavior of the terminal device in the foregoing tenth method aspect, and includes the steps described in the foregoing method. Or functionally corresponding parts (means).
  • the steps or functions may be implemented by software, or by hardware, or by a combination of hardware and software.
  • the above terminal device includes one or more processors and transceiver units.
  • the transceiver unit is configured to support the terminal device to communicate with other devices to implement a receiving/transmitting function.
  • the one or more processors are configured to support the terminal device to perform a corresponding function in the above method.
  • the terminal device may further include one or more memories, and the memory is configured to be coupled to the processor, which stores necessary program instructions and data of the base station.
  • the one or more memories may be integrated with the processor or may be separate from the processor. This application is not limited.
  • the terminal device may be a UE or the like, and the transceiver unit may be a transceiver or a transceiver circuit.
  • the terminal device can also be a communication chip.
  • the transceiver unit may be an input/output circuit or interface of a communication chip.
  • the above terminal device includes a transceiver, a processor, and a memory.
  • the processor is configured to control a transceiver transceiver signal
  • the memory is configured to store a computer program
  • the processor is configured to call and run the computer program from the memory, so that the terminal device performs the eighth aspect, the ninth aspect, and the eighth aspect A possible implementation or a method of network device completion in any of the possible implementations of the ninth aspect.
  • a system comprising the above terminal device and a network device.
  • a computer program product comprising: a computer program (also referred to as a code, or an instruction) that, when executed, causes the computer to perform the eighth aspect, the ninth Aspect, any one of the possible implementations of the eighth aspect, or the method of any one of the possible implementations of the ninth aspect.
  • a computer program also referred to as a code, or an instruction
  • a computer readable medium storing a computer program (which may also be referred to as a code, or an instruction), when executed on a computer, causes the computer to perform the eighth aspect, The method of any of the possible implementations of the nine aspects, the eighth aspect, or the possible implementation of any of the ninth aspects.
  • FIG. 1 is a schematic diagram of an SS burst set in an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a method for transmitting a reference signal in an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a synchronization block in the embodiment of the present application.
  • FIG. 4 is a schematic diagram of another synchronization block in the embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a network device in an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of another network device in the embodiment of the present application.
  • FIG. 7 is a schematic block diagram of a terminal device in an embodiment of the present application.
  • FIG. 8 is a schematic block diagram of another terminal device in the embodiment of the present application.
  • FIG. 9 is a schematic block diagram of another network device in the embodiment of the present application.
  • FIG. 10 is a schematic block diagram of another network device according to an embodiment of the present application.
  • FIG. 11 is a schematic block diagram of another terminal device in the embodiment of the present application.
  • FIG. 12 is a schematic block diagram of another terminal device in the 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
  • WiMAX Worldwide Interoperability for Microwave Access
  • the terminal device in the embodiment of the present application may refer to a user equipment, an access terminal, 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, a wireless communication device, a user agent, or User device.
  • the terminal device may also 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.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may be a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA).
  • Base Transceiver Station which may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in an LTE system (Evolutional The NodeB, eNB or eNodeB) may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a future.
  • the network device in the 5G network or the network device in the PLMN network in the future is not limited in this embodiment.
  • FIG. 2 is a schematic diagram showing a method of transmitting a reference signal in the embodiment of the present application. It should be understood that FIG. 2 illustrates steps or operations of a method of transmitting a reference signal, but these steps or operations are merely examples, and other embodiments of the present application may also perform other operations or variations of the various operations in FIG. 2. Moreover, the various steps in FIG. 2 may be performed in a different order than that presented in FIG. 2, and it is possible that not all operations in FIG. 2 are to be performed.
  • the network device generates a synchronization block (SS block) and a reference signal (Reference Signal, RS).
  • SS block synchronization block
  • RS Reference Signal
  • the synchronization block includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH
  • the PBCH includes a demodulation reference signal DMRS
  • the synchronization block is sent on the first time-frequency resource.
  • the DMRS included in the PBCH is referred to as a PBCH DMRS.
  • the synchronization block and the reference signal may be located in one or more OFDM symbols, and the OFDM symbol may specifically be the symbol shown in FIG. 1 above.
  • the second resource particle RE occupied by the demodulation reference signal PBCH DMRS is different from the time domain of the RE occupied by the PSS or the SSS, and the frequency domain location is different. Specifically, the PSS and the SSS occupy 144 subcarriers, and the PBCH occupies 288 subcarriers. The PSS and the SSS cannot cover the entire bandwidth of the PBCH.
  • each PBCH symbol includes a data resource (Resource Element, RE) and a PBCH DMRS RE, where the data RE carries Master Information Block (MIB) information.
  • the PBCH DMRS can be used as a reference signal to demodulate the data RE.
  • the PBCH DMRS can also carry several bits of information.
  • the DMRS in the PBCH is unknown to the terminal device, and the terminal needs to demodulate the sequence of the DMRS (that is, the information of the above several bits carried in the DMRS), and then demodulate the data RE in the PBCH according to the DMRS.
  • the terminal device needs to demodulate the PSS/SSS first, then perform channel estimation on the DMRS RE according to the known PSS/SSS, and then demodulate the PBCH DMRS sequence.
  • the PSS/SSS/PBCH in one SS block is transmitted using the same antenna port.
  • the digital or analog precoding and beamforming in an SS block are the same.
  • the synchronization block may be sent on the first time-frequency resource by using the first antenna port.
  • the network device may generate a reference signal according to the synchronization block, and the reference signal is sent on the second time-frequency resource.
  • the first resource particle RE occupied by the reference signal is the same as the time domain of the RE occupied by the PSS or the SSS, and the frequency domain location is different, and the time domain location of the RE occupied by the PBCH is different.
  • the frequency domain location is the same, that is, the second time-frequency resource is the same as the time domain location of the RE occupied by the PSS or the SSS in the first time-frequency resource, and the frequency domain location is different.
  • the second time-frequency resource is different from the time domain location of the RE occupied by the PBCH in the first time-frequency resource, and the frequency domain location part is the same.
  • the second time-frequency resource is a time-frequency resource adjacent to the SS block, and the second time-frequency resource is superimposed with the bandwidth of the PSS, that is, the bandwidth of the PBCH, or the second time-frequency resource is superimposed with the bandwidth of the SSS. That is the bandwidth of the PBCH.
  • FIG. 3 is a schematic diagram of a first time-frequency resource and a second time-frequency resource (ie, part C) in the embodiment of the present application.
  • the PBCH symbol in FIG. 3 includes three parts B, A, and B, wherein the part A has the same bandwidth as the PSS or the SSS, and the part B has the same bandwidth as the second time-frequency resource.
  • the network device sends the synchronization block and the reference signal to the terminal device.
  • the network device may send the synchronization block and the reference signal to the serving cell, and may also send the synchronization block and the reference signal to the neighboring cell of the serving cell of the network device.
  • the neighboring cell may be a cell that is in the immediate vicinity of the serving cell, or a cell that is separated from the serving cell by one or more cells, which is not limited in this embodiment of the present application.
  • a DMRS in the PBCH carries a time index of the synchronization block, and a time index of the synchronization block is used to determine a timing of a cell to which the synchronization block belongs.
  • the terminal device can acquire the SS block of the current cell and the neighboring cell.
  • the timing of the neighboring cell may be acquired according to the time index in the SS block.
  • the terminal device may perform cell handover according to the timing of the neighboring cell.
  • the network device may send the synchronization block to the terminal device on the first time-frequency resource, and send the reference signal RS to the terminal device on the second time-frequency resource.
  • the first resource particle RE occupied by the reference signal is the same as the time domain of the RE occupied by the PSS or the SSS, and the frequency domain location is different, and the demodulation reference signal PBCH DMRS occupies the second
  • the resource particle RE is different from the time domain of the RE occupied by the PSS or the SSS and has a different frequency domain position.
  • At least part of the resource particles RE of the first resource particle RE occupied by the reference signal and the frequency location of at least part of the second RE of the PBCH DMRS are the same.
  • FIG. 4 is a schematic diagram showing the frequency positions of the RE of the reference signal and the RE of the PBCH DMRS in the embodiment of the present application. It can be seen that if the number of the first RE is greater than the number of the second RE, the frequency location of the partial RE of the first resource is the same as the frequency location of the second RE. If the density of the RS is higher than the density of the PBCH DMRS, part of the RS is placed on the same subcarrier of the PBCH DMRS, as shown in part (c) of FIG.
  • the frequency position of the first RE is the same as the location of the partial REs in the second RE. If the density of the RS is equal to the density of the PBCH DMRS, all RSs are placed on the same subcarrier of the PBCH DMRS, as shown in part (b) of FIG.
  • the frequency position of the first RE is the same as the location of the partial REs in the second RE.
  • the density of the RS is less than the density of the PBCH DMRS, all RSs are placed on the same subcarrier of the PBCH DMRS, as shown in part (a) of FIG.
  • one sync block shown in FIG. 3 may have 4 adjacent C resources (each C resource may be considered as one of the above second time-frequency resources).
  • the RS transmitted in the embodiment of the present application may be placed in the four C resources shown in FIG. 3 or the partial C resources in the four C resources. For example, only 1 or 2 or 3 C resource parts are placed in it. For example, when the RS is placed in two of the C resources, only two C resources that are frequency-divided with the PSS or two C resources that are frequency-divided with the SSS are placed.
  • the base station may also notify the terminal device of which C resource parts transmit the RS.
  • the base station uses the C resource with SSS frequency division to transmit the “control channel PDCCH with minimum system information”, and the default RS is placed in two C resources that are frequency-divided with SSS.
  • the network device may pass The same antenna port (ie, the first antenna port described above) transmits the synchronization block and the reference signal to the terminal device.
  • the frequency position of at least part of the RS is the same as the frequency position of the PBCH DMRS, or the frequency position of all the PBCH DMRS REs is covered, so that the terminal device can better demodulate the PBCH DMRS according to the reference signal, and improve the PBCH DMRS RE.
  • the accuracy of the channel estimation further improves the demodulation performance of the PBCH DMRS sequence.
  • the network device may send the synchronization block and the reference signal to the terminal device through the second antenna port.
  • the network device may further send a reference signal to the terminal device on the second time-frequency resource by using the second antenna port (the port number of the second antenna port may be different from the port number of the first antenna port), where the reference signal may be used.
  • the PBCH DMRS sequence is demodulated by the terminal device.
  • the reference signal is a reference signal sent on the second time-frequency resource, and the reference signal is used to demodulate the PBCH DMRS in the first time-frequency resource.
  • the network device sends the first indication information to the terminal device.
  • the first indication information is used to indicate that the first antenna port sent by the first network device or the second network device is the same as the second antenna port, where the first antenna port is used to transmit a synchronization block.
  • the second antenna port is used to transmit a reference signal.
  • the first network device is a network device of a serving cell of the terminal device, that is, the first network device is a serving base station or a serving network device of the terminal device.
  • the second network device is a network device of a neighboring cell of the serving cell.
  • the serving cell and the neighboring cell may be referred to in the foregoing description. To avoid repetition, details are not described herein again.
  • the serving network device for example, the serving base station
  • the serving network device for example, the serving base station of the current terminal device can send the first indication information to the Terminal Equipment.
  • the first antenna port is the same as the second antenna port, and it can be understood that the Orthogonal Frequency Division Multiplexing (OFDM) symbol transmitted on the second antenna port and the first antenna port is The same channel is experienced during transmission. That is, the precoding and beamforming of the OFDM symbols transmitted on the first antenna port and the second antenna port are the same.
  • OFDM Orthogonal Frequency Division Multiplexing
  • the network device can dynamically schedule any data and reference signals to be transmitted on the PSS/SSS adjacent bandwidth (ie, the second time-frequency resource). If the reference signal transmitted on the adjacent bandwidth can assist in the demodulation of the PBCH DMRS, the user is notified to demodulate the PBCH DMRS based on the reference signal.
  • the first indication information may be carried in the PBCH, the RMSI, the broadcast system information (SI), the on demand (on demand) other SI, the downlink control information (Downlink Control Information (DCI) signaling, the media access Control (Medium Access Control, MAC) signaling, Radio Resource Control (RRC) signaling.
  • SI broadcast system information
  • SI on demand
  • DCI Downlink Control Information
  • MAC media access Control
  • RRC Radio Resource Control
  • the network device may further send, to the terminal device, second indication information, where the second indication information is used to indicate at least one of a time domain, a frequency domain, a sequence, and a transmit power of the RS.
  • the second indication information may also be carried in the PBCH, the RMSI, the broadcast other SI, the on demand other SI, the DCI signaling, the MAC signaling, and the RRC signaling.
  • the second indication information may use the reserved field in the foregoing signaling or message, or jointly code with other fields in the foregoing signaling, so that the signaling overhead of the system may be reduced, and resource utilization is improved.
  • the second indication information may be notified to the terminal in an explicit or implicit manner.
  • the second indication information may have at least one bit for indicating at least one of a time domain, a frequency domain, a sequence, and a transmission power of the RS.
  • the base station can inform the terminal device of the specific signal used by the second time-frequency resource for transmission, and the terminal device can infer the specific signal of the reference signal according to the transmitted signal. Moreover, when the terminal device is notified in an implicit manner, the signaling overhead of the network device can be saved, and the resource utilization rate can be improved.
  • the RS may be carried in a control resource set CORSET, a physical downlink control channel PDCCH, and a physical downlink data channel PDSCH.
  • the CORSET, PDCCH, and PDSCH include DMRS for demodulating data.
  • the RS may be a DMRS, a CSI-RS, a PTRS, or a TRS.
  • the second time-frequency resource can be used to transmit the CORSET, PDCCH or PDSCH including the DMRS, and can also be used to transmit the CSI-RS, PTRS or TRS.
  • the terminal device demodulates the PBCH DMRS.
  • the terminal device may demodulate the PBCH DMRS according to the reference signal received on the first antenna port. Because the at least part of the resource particles RE in the first resource particle RE occupied by the reference signal and the frequency location of at least part of the second RE in the second RE of the PBCH DMRS are the same, the terminal device can better base the device.
  • the reference signal demodulates the PBCH DMRS, improves the channel estimation accuracy of the PBCH DMRS RE, and further improves the demodulation performance of the PBCH DMRS sequence.
  • the terminal device may demodulate the PBCH DMRS by using the RS transmitted on the second antenna port after receiving the first indication information.
  • the terminal device may receive the second indication information sent by the network device, and determine specific information of the reference signal, for example, at least one of a time domain, a frequency domain, a sequence, and a transmission power of the reference signal.
  • the terminal device may infer specific information of the reference signal according to the specific signal transmitted, for example, at least one of a time domain, a frequency domain, a sequence, and a transmit power of the reference signal.
  • specific signal transmitted, for example, at least one of a time domain, a frequency domain, a sequence, and a transmit power of the reference signal.
  • the reference signal may be carried in the control resource set CORSET, the physical downlink control channel PDCCH, and the physical downlink data channel PDSCH.
  • the CORSET, PDCCH, and PDSCH include DMRS for demodulating data.
  • the terminal device may determine the specific information of the reference signal according to the resource or channel specifically carried by the reference signal. For example, if the PDCCH is transmitted, for the information of the DMRS carried in the PDCCH, the user may infer the specific information of the reference signal by one or more known information: the time domain in which the PDCCH is located, the frequency location, and the cell identifier ( ID), user identification (ID), DMRS port number, etc.
  • the reference signal may be DMRS, CSI-RS, PTRS or TRS.
  • the terminal device can determine the specific information of the reference signal according to the specific type of the reference signal (the specific type of the reference signal is, for example, DMRS, CSI-RS, PTRS or TRS). For example, if the CSI-RS is transmitted, the user can infer the specific information of the reference signal CSI-RS by one or more known information: the time domain, the frequency location where the CSI-RS is located, and the cell identifier (ID). , user identification (ID), CSI-RS port number, and so on.
  • the network device may use a resource setting, a resource set, a resource, and a port information of the DMRS, the CSI-RS, the PTRS, or the TRS transmitted on the second time-frequency resource. At least one of the notification terminals and informs the terminal device which port has the same channel as the symbol transmitted by the antenna port transmitting the SS block. At this time, the terminal device learns the specific information of the reference signal according to the resource setting and/or resource set and/or resource and/or port information of the RS transmitted on the same port as the transmission SS block. After acquiring the specific information of the reference signals, for example, the reference signals are used to demodulate the PBCH DMRS in the adjacent SS block to obtain the information carried by the PBCH DMRS.
  • the network device may notify the terminal device to transmit the DMRS with the port number 5 on the adjacent bandwidth resource of the PSS/SSS, and the port is the same as the port 0 of the adjacent SS block, and the terminal device receives the notification of the network device.
  • the DMRS can be used to demodulate the PBCH DMRS.
  • the network device notifies the terminal device that the TRS port number 20 is transmitted on the adjacent bandwidth resource, and the port is the same as the port 0 of the neighboring SS block, and the terminal device can adopt the DMRS after receiving the notification of the network device.
  • the network device sends a synchronization block to the terminal device through the first antenna port, sends a reference signal to the terminal device through the second antenna port, and sends the second antenna port to the terminal device to indicate the second antenna port and the
  • the first indication information of the first antenna port is the same, so that the terminal device can demodulate the PBCH DMRS in the SS block according to the first indication information and the reference signal.
  • the network device can flexibly select an antenna port to transmit a reference signal to the terminal device in the adjacent bandwidth of the PSS/SSS, thereby improving the spectrum efficiency of the communication system.
  • the network device uses the second antenna
  • the demodulation performance of the PBCH DMRS sequence can be further improved while improving the spectral efficiency of the system.
  • the communication device may be a network device or a terminal device.
  • the communication device in the embodiment of the present application will be described below with reference to FIGS. 5 to 12.
  • FIG. 5 shows a schematic block diagram of a network device 500 according to an embodiment of the present application.
  • Network device 500 includes a transmitting unit 510.
  • the sending unit 510 is configured to send the first indication information to the terminal device, where the first indication information is used to indicate that the first antenna port sent by the network device or the second network device is the same as the second antenna port, where The first antenna port is for transmitting a sync block, and the second antenna port is for transmitting a reference signal.
  • the sending unit 510 may be implemented by a transceiver.
  • network device 600 can include a processor 610, a memory 620, and a transceiver 630.
  • the memory 620 can be used to store code and the like executed by the processor 610, and the processor 610 can be used to process data or programs.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 610 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 620, and the processor 610 reads the information in the memory 620 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the network device 500 shown in FIG. 5 or the network device 600 shown in FIG. 6 can implement the respective processes corresponding to the foregoing method embodiment shown in FIG. 2 .
  • the network device 500 or the network device 600 can refer to FIG. 2 above. The description, to avoid repetition, will not be repeated here.
  • the embodiment of the present application provides a computer readable medium for storing a computer program, where the computer program includes instructions for executing the method corresponding to the terminal device in the various implementation manners in FIG. 2 above.
  • the embodiment of the present application further provides a communication chip, where instructions are stored, when it is run on the network device 500 or the network device 600, so that the communication chip performs the network device corresponding to the various implementation manners in FIG. 2 above. Methods.
  • FIG. 7 is a schematic block diagram of a terminal device 700 according to an embodiment of the present application.
  • the terminal device 700 includes a receiving unit 710.
  • the receiving unit 710 is configured to receive first indication information that is sent by the first network device, where the first indication information is used to indicate that the first antenna port sent by the first network device or the second network device is the same as the second antenna port
  • the first antenna port is configured to transmit a synchronization block
  • the second antenna port is configured to transmit a reference signal.
  • the receiving unit 710 may be implemented by a transceiver.
  • the terminal device 800 can include a processor 810, a memory 820, and a transceiver 830.
  • the memory 820 can be used to store code and the like executed by the processor 810, and the processor 810 can be used to process data or programs.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 810 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 820, and the processor 810 reads the information in the memory 820 and completes the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the terminal device 700 shown in FIG. 7 or the terminal device 800 shown in FIG. 8 can implement the processes corresponding to the foregoing method embodiment shown in FIG. 2 .
  • the terminal device 700 or the terminal device 800 can refer to FIG. 2 above. The description, to avoid repetition, will not be repeated here.
  • the embodiment of the present application provides a computer readable medium for storing a computer program, where the computer program includes instructions for executing the method corresponding to the terminal device in the various implementation manners in FIG. 2 above.
  • the embodiment of the present application further provides a communication chip in which an instruction is stored, and when it is run on the terminal device 700 or the terminal device 800, the communication chip is caused to perform the terminal device corresponding to the foregoing implementation manners in FIG. Methods.
  • FIG. 9 is a schematic block diagram of a network device 900 according to an embodiment of the present application.
  • the network device 900 includes a generating unit 910 and a transmitting unit 920.
  • the generating unit 910 is configured to generate a synchronization block and a reference signal, where the synchronization block includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH, where the PBCH includes a demodulation reference signal DMRS, and the reference signal is And occupying at least a part of the resource particles RE of the first resource particle RE and at least part of the resource particles RE of the second resource particle RE occupied by the DMRS;
  • the sending unit 920 is configured to send the synchronization block and the reference signal to the terminal device by using the same antenna port.
  • the generating unit 910 may be implemented by a processor, and the sending unit 920 may be implemented by a transceiver.
  • network device 1000 can include a processor 1010, a memory 1020, and a transceiver 1030.
  • the memory 1020 can be used to store code and the like executed by the processor 1010, and the processor 1010 can be used to process data or programs.
  • each step of the foregoing method may be completed by an integrated logic circuit of hardware in the processor 1010 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 1020, and the processor 1010 reads the information in the memory 1020 and performs the steps of the above method in combination with its hardware. To avoid repetition, it will not be described in detail here.
  • the network device 900 shown in FIG. 9 or the network device 1000 shown in FIG. 10 can implement the processes corresponding to the foregoing method embodiments shown in FIG. 2 .
  • the network device 900 or the network device 1000 can be referred to FIG. 2 above. The description, to avoid repetition, will not be repeated here.
  • the embodiment of the present application provides a computer readable medium for storing a computer program, where the computer program includes instructions for executing the method corresponding to the terminal device in the various implementation manners in FIG. 2 above.
  • the embodiment of the present application further provides a communication chip, where instructions are stored, when it is run on the network device 900 or the network device 1000, causing the communication chip to perform the network device corresponding to the various implementation manners in FIG. 2 above. Methods.
  • FIG. 11 is a schematic block diagram of a terminal device 1100 according to an embodiment of the present application.
  • the terminal device 1100 includes a receiving unit 1110.
  • the receiving unit 1110 is configured to receive a synchronization block and a reference signal that are sent by the network device by using the same antenna port, where the synchronization block includes a primary synchronization signal PSS, a secondary synchronization signal SSS, and a physical broadcast channel PBCH, where the PBCH includes a demodulation reference.
  • the signal DMRS, the at least part of the resource particles RE in the first resource particle RE occupied by the reference signal and the frequency position of at least part of the resource particles RE in the second resource particle RE occupied by the PBCH DMRS are the same.
  • the receiving unit 1110 may be implemented by a transceiver.
  • the terminal device 1200 can include a processor 1210, a memory 1220, and a transceiver 1230.
  • the memory 1220 can be used to store code and the like executed by the processor 1210, and the processor 1210 can be used to process data or programs.
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor 1210 or an instruction in a form of software.
  • the steps of the method disclosed in the embodiments of the present invention may be directly implemented as a hardware processor, or may be performed by a combination of hardware and software modules in the processor.
  • the software module can be located in a conventional storage medium such as random access memory, flash memory, read only memory, programmable read only memory or electrically erasable programmable memory, registers, and the like.
  • the storage medium is located in the memory 1220, and the processor 1210 reads the information in the memory 1220 and, in conjunction with its hardware, performs the steps of the above method. To avoid repetition, it will not be described in detail here.
  • the terminal device 1100 shown in FIG. 11 or the terminal device 1200 shown in FIG. 12 can implement various processes corresponding to the foregoing method embodiment shown in FIG. 2 .
  • the terminal device 1100 or the terminal device 1200 can refer to FIG. 2 above. The description, to avoid repetition, will not be repeated here.
  • the embodiment of the present application provides a computer readable medium for storing a computer program, where the computer program includes instructions for executing the method corresponding to the terminal device in the various implementation manners in FIG. 2 above.
  • the embodiment of the present application further provides a communication chip in which an instruction is stored, and when it is run on the terminal device 1100 or the terminal device 1200, the communication chip is caused to perform the terminal device corresponding to the foregoing implementation manners in FIG. Methods.
  • 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, which can store program codes. .

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  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé de communication, un dispositif de réseau et un équipement terminal. Le procédé comprend les étapes suivantes : un premier dispositif de réseau envoie des premières informations d'indication à un équipement terminal, les premières informations d'indication étant utilisées pour indiquer qu'un premier port d'antenne envoyé par le premier dispositif de réseau ou un second dispositif de réseau est le même qu'un second port d'antenne, le premier port d'antenne étant utilisé pour émettre un bloc de synchronisation et le second port d'antenne étant utilisé pour émettre un signal de référence. Les modes de réalisation de la présente invention peuvent améliorer l'efficacité spectrale.
PCT/CN2018/096587 2017-08-11 2018-07-23 Procédé d'émission de signal de référence et dispositif de communication WO2019029346A1 (fr)

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