WO2022141068A1 - 一种通信方法与装置 - Google Patents

一种通信方法与装置 Download PDF

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Publication number
WO2022141068A1
WO2022141068A1 PCT/CN2020/140908 CN2020140908W WO2022141068A1 WO 2022141068 A1 WO2022141068 A1 WO 2022141068A1 CN 2020140908 W CN2020140908 W CN 2020140908W WO 2022141068 A1 WO2022141068 A1 WO 2022141068A1
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WO
WIPO (PCT)
Prior art keywords
signal
information
time unit
signaling
terminal device
Prior art date
Application number
PCT/CN2020/140908
Other languages
English (en)
French (fr)
Inventor
谢信乾
郭志恒
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20967416.7A priority Critical patent/EP4255066A4/en
Priority to CN202080107767.8A priority patent/CN116671206A/zh
Priority to PCT/CN2020/140908 priority patent/WO2022141068A1/zh
Publication of WO2022141068A1 publication Critical patent/WO2022141068A1/zh
Priority to US18/342,903 priority patent/US20230345500A1/en

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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
    • 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
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows

Definitions

  • the embodiments of the present application relate to the field of wireless communication, and in particular, to a communication method and apparatus.
  • the network device sends downlink data to the terminal device in each time slot Control information (Downlink Control Information, DCI), used to instruct the terminal device to receive a physical downlink shared channel (Physical Downlink Shared Channel, PDSCH) in multiple consecutive time slots, and each DCI includes a channel for indicating the corresponding PDSCH Indication fields such as frequency domain location, antenna port, etc.
  • DCI Downlink Control Information
  • the network device For a terminal device whose channel changes slowly, when the terminal device needs to receive PDSCH in multiple consecutive time slots, the network device will send DCI to the terminal in each time slot to schedule the PDSCH, and each time slot All the DCIs in the DCI carry the frequency domain resource indication field and the antenna port indication field indicating the same content, thus increasing unnecessary signaling overhead.
  • Embodiments of the present application provide a communication method and device for reducing signaling overhead.
  • the present application provides a communication method, and the execution body of the method may be a terminal device or a chip applied in the terminal device.
  • the following description takes the execution subject being a terminal device as an example.
  • the terminal device may receive a first signaling from a network device, the first signaling instructs the terminal device to receive a first signal within a first time unit, and the first signaling includes a combination of the first signal and the first signal.
  • the terminal device may receive the first signal within the first time unit according to the first signaling.
  • the terminal device receives second signaling, the second signaling instructs the terminal device to receive a second signal within a second time unit, the second signaling does not include the second signal associated with the second signal Indication information of the first information.
  • the terminal device may receive the second signal within the second time unit according to the first indication information and the second signaling.
  • the first information includes at least one item of frequency domain resource information, modulation and coding strategy information, antenna port information or bandwidth part information.
  • the above manner can eliminate the need to carry the indication information for indicating the first information associated with the second signal in the second signaling, thereby reducing the overhead of the indication information carried in the second signaling and improving communication efficiency. Further, for a terminal device whose channel changes slowly, the channel quality of the network device and the terminal device in consecutive time slots is almost unchanged, so the network device uses the same frequency domain resources and modulation in the consecutive time slots. and one or more of the coding strategy, the antenna port or the bandwidth part to send the signal to the terminal device, so there is no negative impact on the transmission performance, so that the transmission of the second signaling can be reduced without reducing the quality of the communication. s expenses.
  • the terminal device receives the second signal within the second time unit according to the first indication information and the second signaling, including: the terminal device can receive the second signal according to the first indication information and the second signaling
  • the first indication information determines the first information associated with the second signal
  • the second signal is received within the second time unit according to the first information and the second signaling.
  • the indication information of the first information includes frequency domain resource indication information and antenna port indication information
  • the terminal device respectively determines the first information according to the frequency domain resource indication information and the antenna port indication information.
  • the frequency domain resource occupied by the second signal and the antenna port number corresponding to the frequency domain resource are based on the frequency domain resource occupied by the second signal, the antenna port number corresponding to the frequency domain resource, and the second signaling , the second signal is received within the second time unit.
  • the first time unit and the second time unit respectively include one or more time slots, mini-slots or symbols.
  • the first time unit and the second time unit are each a time slot, and the first time unit and the second time unit do not overlap in time.
  • the first time unit and the second time unit correspond to the same uplink and downlink switching period.
  • the uplink and downlink switching period may be a period of time, and in this switching period, the switching of the sending signal to the receiving signal can only be performed once. Therefore, the above method can ensure that the phases of the first signal and the second signal are continuous, so that when the terminal device receives the second signal, the demodulation reference signal corresponding to the first signal can be used for reception, and the reception of the second signal is improved. performance.
  • the present application provides a communication method, and the execution body of the method may be a network device or a chip applied in the network device.
  • the execution subject being a network device as an example.
  • the beneficial effects please refer to the first aspect, which will not be repeated here.
  • the network device may send first signaling to the terminal device, where the first signaling is used to instruct the terminal device to receive the first signal within the first time unit, and the first signaling includes the first signal and the second signal.
  • the first indication information of the associated first information may be sent.
  • the network device may send the first signal within the first time unit, and the network device sends a second signaling to the terminal device, where the second signaling is used to instruct the terminal device in the first time unit.
  • the second signal is received within two time units, and the second signaling does not include indication information of the first information associated with the second signal.
  • the network device may send the second signal to the terminal device at the second time unit.
  • the first information includes at least one item of frequency domain resource information, modulation and coding strategy information, antenna port information, and bandwidth part information.
  • the network device before the network device sends the first signaling to the terminal device, the network device also needs to determine the first information associated with the first signal and the second signal same.
  • the first time unit and the second time unit respectively include one or more time slots, mini-slots or symbols.
  • the first time unit and the second time unit are each a time slot, and the first time unit and the second time unit do not overlap in time.
  • the first time unit and the second time unit correspond to the same uplink and downlink switching cycle.
  • a communication device in a third aspect, is provided, and the beneficial effects can be referred to the description of the first aspect and will not be repeated here.
  • the communication device has a function to implement the behavior in the method example of the first aspect above.
  • the functions can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the communication device includes a storage module and a transceiver module, wherein the storage module is used to store computer programs or instructions.
  • the transceiver module is configured to receive the first signaling received from the network device, the first signaling instructs the terminal device to receive the first signal in the first time unit, and the first signaling includes and The first indication information of the first information associated with the first signal and the second signal, the first signal is received within the first time unit according to the first signaling, and the second signaling is received, and the first signal is received within the first time unit according to the first signaling.
  • Two signaling instructs the terminal device to receive a second signal within a second time unit, the second signaling does not include indication information of the first information associated with the second signal, and according to the first
  • the indication information and the second signaling receive the second signal within the second time unit.
  • a communication device in a fourth aspect, is provided, and the beneficial effects can be referred to the description of the second aspect and will not be repeated here.
  • the communication device has a function to implement the behavior in the method example of the second aspect above.
  • the functions can be implemented by hardware, or can be implemented by hardware executing corresponding software.
  • the hardware or software includes one or more modules corresponding to the above functions.
  • the communication device includes a storage module and a transceiver module, wherein the storage module is used to store computer programs or instructions.
  • the transceiver module is configured to send the first signaling to the terminal device, where the first signaling is used to instruct the terminal device to receive the first signal within the first time unit, and the first signaling includes the first signal and the first signal.
  • the first indication information of the first information associated with the second signal is sent within the first time unit.
  • the transceiver module is configured to send a second signaling to the terminal device, where the second signaling is used to instruct the terminal device to receive the second signal within the second time unit, the second signaling does not include and The indication information of the first information associated with the second signal.
  • the transceiver module is configured to send the second signal to the terminal device in the second time unit.
  • a communication apparatus is provided, and the communication apparatus may be the terminal device in the above method embodiments, or a chip provided in the terminal device.
  • the communication device includes a communication interface, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface, and when the processor executes the computer program or instructions, the communication apparatus executes the method executed by the terminal device in the above method embodiments.
  • a communication apparatus is provided, and the communication apparatus may be the network device in the above method embodiment, or a chip provided in the network device.
  • the communication device includes a communication interface, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions, and the processor is coupled to the memory and the communication interface, and when the processor executes the computer program or instructions, the communication apparatus executes the method performed by the network device in the above method embodiments.
  • a computer program product comprising: computer program code, when the computer program code is executed, the method performed by the terminal device in the above aspects is executed.
  • a computer program product comprising: computer program code, when the computer program code is executed, the method performed by the network device in the above aspects is executed.
  • the present application provides a chip system, where the chip system includes a processor for implementing the functions of the terminal device in the methods of the above aspects.
  • the chip system further includes a memory for storing program instructions and/or data.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present application provides a chip system, where the chip system includes a processor for implementing the functions of the network device in the methods of the above aspects.
  • the chip system further includes a memory for storing program instructions and/or data.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method executed by the terminal device in the above aspects is implemented.
  • the present application provides a computer-readable storage medium, where a computer program is stored in the computer-readable storage medium, and when the computer program is executed, the method executed by the network device in the above aspects is implemented.
  • FIG. 1 is a schematic structural diagram of a mobile communication system to which an embodiment of the present application is applied;
  • FIG. 2 is a schematic diagram of a possible resource in an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a possible configuration of a DMRS port according to an embodiment of the present application.
  • 4 is a schematic diagram of the correspondence between subframes, symbols, time slots and mini-slots in an embodiment of the present application
  • FIG. 5 is a schematic diagram of a possible communication method in an embodiment of the present application.
  • 5A is a schematic diagram of another possible communication method in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a possible time unit in an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a communication apparatus 700 in an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a communication apparatus 800 in an embodiment of the present application.
  • FIG. 1 it is a schematic diagram of a possible network architecture applicable to the embodiment of the present application, including a terminal device 110 and an access network device 120 .
  • the terminal device 110 and the access network device 120 can communicate through the Uu air interface, and the Uu air interface can be understood as an interface between a general terminal device and a network device (universal UE to network interface). Transmission on the Uu air interface includes uplink transmission and downlink transmission.
  • the uplink transmission refers to the terminal device 110 sending uplink information to the access network device 120 .
  • the uplink information may include one or more of uplink data information, uplink control information, and a reference signal (reference signal, RS).
  • the channel used to transmit uplink information is called an uplink channel, and the uplink channel can be a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).
  • the PUSCH is used to carry uplink data, and uplink data may also be referred to as uplink data information.
  • PUCCH is used to carry uplink control information (uplink control information, UCI) fed back by terminal equipment.
  • the UCI may include channel state information (channel state information, CSI), acknowledgement (acknowledgement, ACK)/negative acknowledgement (negative acknowledgement, NACK), and the like.
  • the downlink transmission refers to the access network device 120 sending downlink information to the terminal device 110 .
  • the downlink information may include one or more of downlink data information, downlink control information and downlink reference signals.
  • the downlink reference signal may be a channel state information reference signal (CSI-RS) or a phase tracking reference signal (PTRS).
  • the channel used to transmit downlink information is called a downlink channel, and the downlink channel can be a physical downlink shared channel (PDSCH) or a physical downlink control channel (PDCCH).
  • the PDCCH is used to carry downlink control information (downlink control information, DCI), and the PDSCH is used to carry downlink data, which may also be referred to as downlink data information.
  • a core network device 130 may also be included.
  • the terminal device 110 may be connected to the access network device 120 in a wireless manner, and the access network device 120 may be connected to the core network device 130 in a wired or wireless manner.
  • the core network device 130 and the access network device 120 may be independent and different physical devices, or the core network device 130 and the access network device 120 may be the same physical device, and the core network device 130 and the access network device are integrated on the physical device. All/part of the logical functions of the networked device 120.
  • the terminal device 110 may be in a fixed position or may be movable, which is not limited in this application.
  • the network architecture shown in FIG. 1 may further include other network devices, such as wireless relay devices and wireless backhaul devices, which are not limited in this application.
  • the number of terminal devices, access network devices and core network devices is not limited.
  • long term evolution long term evolution
  • 5th generation fifth generation
  • future mobile communication systems etc.
  • the multiple access mode usually adopts an orthogonal frequency division multiple access (Orthogonal Frequency Division Multiplexing Access, OFDMA) mode.
  • OFDMA Orthogonal Frequency Division Multiplexing Access
  • the main feature of the OFDM method is to divide the transmission resources into mutually orthogonal time-frequency resource elements (Resource Element, RE), and the network equipment and the terminal equipment transmit signals through the REs. They are orthogonal to each other, so that the terminal equipment can separately receive the signal sent on each RE.
  • RE time-frequency resource elements
  • the signal carried on the RE will be distorted after being transmitted through the channel, and the channel distortion is usually referred to as the channel coefficient.
  • the channel coefficient based on the reference signal is usually estimated, that is, the network device transmits a known signal on a specific RE, and the terminal device estimates the channel according to the received signal and the known signal.
  • the coefficients are estimated, and the channel coefficients on other REs are interpolated according to the channel coefficients obtained from the estimation results, thereby facilitating the reception and demodulation of the signal through the channel coefficients obtained by the estimation.
  • the base station is equipped with multiple antennas to realize spatial multiplexing transmission using multiple input multiple output (MIMO) technology, that is, to transmit multiple data on the same time-frequency resources, Each data is transmitted on a separate spatial layer, and each spatial layer will be mapped to a different antenna port for transmission.
  • MIMO multiple input multiple output
  • the antenna ports are configured with different DMRSs, and the DMRSs corresponding to different antenna ports can be multiplexed by means of time division, frequency division, and code division.
  • the horizontal direction represents the time domain
  • the vertical direction represents the frequency domain
  • each small square represents an RE
  • DMRS ports 0 and 1 are multiplexed by orthogonal codes, so these two
  • the RE corresponding to the port is also called a code division multiplexing group (CDM group).
  • CDM group code division multiplexing group
  • 5G NR supports fixed access nodes. Such access nodes are usually installed in fixed locations, such as windows, roofs, etc. Once installed, the location does not change over time, so the channel quality changes faster than time. The rate of change in the channel quality of the mobile phone is lower.
  • DMRS may not be configured for M time units in the N time units.
  • the M time units use the channel estimated by the DMRS in the pre-time unit to perform data demodulation, thereby reducing pilot overhead.
  • the time unit may be a time slot
  • the M and N are integers
  • M ⁇ N As shown in Figure 3 below, two DMRS symbols are configured in time slot #0, and no DMRS symbols are configured in subsequent time slots #1 to #N.
  • the network device sends DCI to the terminal device in each time unit, which is used to instruct the terminal device to receive PDSCH from the network device in multiple consecutive time units, and each DCI includes DCI for Indication information indicating the frequency domain location, antenna port, etc. corresponding to the PDSCH.
  • each DCI includes DCI for Indication information indicating the frequency domain location, antenna port, etc. corresponding to the PDSCH.
  • the network device will send DCI to the terminal in each time unit to schedule the PDSCH, and each time unit
  • the DCI in the time unit all carry the frequency domain resource indication field and the antenna port indication field indicating the same content, thus increasing unnecessary signaling overhead.
  • the present application provides a communication method, the principle of which is: the first signaling received by the terminal device includes first indication information of the first information associated with the first signal and the second signal, and the terminal device The received second signaling does not include indication information of the first information associated with the second signal, and the terminal device may receive the second signal according to the first indication information and the second signaling. Since the second signaling no longer carries the first indication information of the first information associated with the second signal, the overhead of the indication information carried in the second signaling can be reduced, and communication efficiency is improved.
  • a wireless access network device is an access device that a terminal device wirelessly accesses to the mobile communication system, which can be a base station (base station), an evolved base station (evolved NodeB, eNodeB), a transmission reception point (transmission reception point, TRP), the next generation NodeB (gNB) in the 5G mobile communication system, the base station in the future mobile communication system or the access node in the WiFi system, etc.; it can also be a module or unit that completes some functions of the base station, such as , which can be a centralized unit (CU) or a distributed unit (DU); or a network device in a V2X technology that is a roadside unit (RSU), a base station Can be used to convert received air frames to and from Internet Protocol (IP) packets and act as a router between the end device and the rest of the access network, which can include an IP network.
  • base station base station
  • eNodeB evolved NodeB
  • TRP transmission reception point
  • gNB next generation Node
  • the RSU can be a fixed infrastructure entity supporting vehicle-to-everything (V2X) applications, and can exchange messages with other entities supporting V2X applications.
  • V2X vehicle-to-everything
  • the access network equipment can also coordinate the attribute management of the air interface.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the wireless access network device.
  • wireless access network equipment is referred to as network equipment, and unless otherwise specified, network equipment refers to wireless access network equipment.
  • a terminal device may also be referred to as a terminal terminal, a user equipment (UE), a mobile station (mobile station, MS), a mobile terminal (mobile terminal, MT), and the like.
  • the terminal device can be a mobile phone (mobile phone), a tablet computer (Pad), a computer with wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality (Augmented Reality, AR) terminal device, industrial control (industrial control) wireless terminals in ), wireless terminals in self-driving, wireless terminals in remote medical surgery, wireless terminals in smart grid, wireless terminals in transportation safety Terminals, wireless terminals in smart cities, wireless terminals in smart homes, and so on.
  • the embodiments of the present application do not limit the specific technology and specific device form adopted by the terminal device.
  • the apparatus for implementing the function of the network device may be a network device; it may also be an apparatus capable of supporting the network device to implement the function, such as a chip system, and the apparatus may be installed in the network device.
  • the technical solutions provided by the embodiments of the present application are described by taking the device for realizing the function of the network device being a network device as an example.
  • Network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle; can also be deployed on water; can also be deployed in the air on aircraft, balloons and satellites.
  • the embodiments of the present application do not limit the application scenarios of the network device and the terminal device.
  • Communication between network equipment and terminal equipment can be performed through licensed spectrum (licensed spectrum), or unlicensed spectrum (unlicensed spectrum), or both licensed spectrum and unlicensed spectrum.
  • the network device and the terminal device can communicate through the frequency spectrum below 6 GHz (gigahertz, GHz), and can also communicate through the frequency spectrum above 6 GHz, and can also use the frequency spectrum below 6 GHz and the frequency spectrum above 6 GHz for communication at the same time.
  • the embodiments of the present application do not limit the spectrum resources used between the network device and the terminal device.
  • the time-domain symbols may be orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols, or may be single carrier frequency division multiplexing (single carrier-frequency division multiplexing, SC-FDM) symbols symbol.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDM single carrier frequency division multiplexing
  • a time unit is a time domain unit used for data transmission, which may include radio frame, subframe, slot, mini-slot, and time domain symbols. Domain unit.
  • one radio frame may include 10 subframes, and one subframe may include one or more time slots. Specifically, how many time slots a subframe includes is related to the subcarrier spacing.
  • the frame structure parameter may include subcarrier spacing and/or cyclic prefix (cyclic prefix, CP) type, etc.
  • the CP type may also be referred to as the CP length, or simply the CP.
  • the CP type may be an extended CP, or a normal CP.
  • the next time slot of the extended CP may include 12 time domain symbols, and the next time slot of the normal CP may include 14 time domain symbols.
  • Time domain symbols can be simply called symbols.
  • the time-domain symbols can be orthogonal frequency division multiplexing (OFDM) symbols or discrete fourier transform spread orthogonal frequency division multiplexing (DFT-s- OFDM) symbol.
  • the time domain symbol is an OFDM symbol as an example for description.
  • the frame structure parameter numbered 2 is: the subcarrier spacing is 60 kHz, and the CP is a normal CP or an extended CP.
  • a mini-slot also known as a mini-slot, can be a smaller unit than a time slot, and a mini-slot can include one or more symbols.
  • a mini-slot may include 2 symbols, 4 symbols or 7 symbols, and so on.
  • a time slot may include one or more mini-slots.
  • one radio frame can last for 10ms, and each subframe can last for 1ms.
  • One radio frame includes 10 subframes, and each time slot lasts for 1ms.
  • 1 slot is included, and each slot can include 14 symbols.
  • the mini-slot may include 4 symbols, 2 symbols, or 7 symbols, and so on.
  • a frequency domain unit may include one or more resource blocks (RBs), resource elements (REs), resource block groups (RBGs), or resource element groups (REGs).
  • the RBG may include one or more RBs, such as 6; the RBs may include one or more REs, such as 12; the REG may include one time-domain symbol in the time domain and one RB in the frequency domain.
  • An antenna port is a logical port for transmission, and one antenna port includes multiple physical antennas. From the perspective of the terminal device, each antenna port corresponds to an independent wireless channel.
  • the demodulation reference signal (Demodulation Reference Signal, DMRS) is a reference signal used to recover the received signal, and the DMRS is a signal known to the terminal device.
  • the terminal device can determine the wireless channel according to the received signal and the DMRS signal. Fading characteristics, that is, the channel coefficients of the wireless channel, which are used to recover the received signal.
  • the channel coefficients from different antenna ports to the terminal device are not the same, in order for the terminal device to obtain the information transmitted on multiple spatial layers, it is necessary to perform the channel coefficients between each antenna port and the terminal device.
  • DMRSs corresponding to different antenna ports can be multiplexed by means of time division, frequency division, and code division.
  • 5G NR systems can support up to 12 MDRS ports.
  • At least one refers to one or more, and "a plurality” refers to two or more.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • “At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • At least one item (a) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c may be single or multiple .
  • the ordinal numbers such as “first” and “second” mentioned in the embodiments of the present application are used to distinguish multiple objects, and are not used to limit the order, sequence, priority or priority of multiple objects. Importance.
  • the first information and the second information are only for distinguishing different signaling, and do not indicate the difference in content, priority, transmission order, or importance of the two kinds of information.
  • an embodiment of the present application provides a schematic flowchart of a communication method.
  • the method can be executed by a terminal device and a network device, or can also be executed by a chip in the terminal device and a chip in the network device.
  • the network device in FIG. 5 can be the access network device 120 in the above-mentioned FIG. 1
  • the terminal device can be the terminal device 110 in the above-mentioned FIG. 1 .
  • the method shown in FIG. 5 may include the following operations.
  • the network device sends the first signaling to the terminal device.
  • the terminal device receives the first signaling.
  • the first signaling is used to instruct the terminal device to receive the first signal within the first time unit, and the first signaling includes first indication information of the first information associated with the first signal and the second signal .
  • the first information is frequency domain resource information
  • the first signaling includes first indication information of frequency domain resource information associated with the first signal, and information of frequency domain resource information associated with the second signal. first indication information.
  • the method may further include: determining, by the network device, that the first information associated with the first signal and the second signal are the same.
  • the network device sends the first signal within the first time unit.
  • the terminal device receives the first signal within the first time unit according to the first signaling.
  • the network device sends the second signaling to the terminal device.
  • the terminal device receives the second signaling.
  • the second signaling is used to instruct the terminal device to receive a second signal within the second time unit, and the second signaling does not include indication information of the first information associated with the second signal.
  • the first indication information of the first information in step 501 is associated with the second signal, while in step 503, the second signaling does not include any indication information of the first information associated with the second signal.
  • the first signal and the second signal are associated with the same first indication information.
  • the indication information in step 503 refers to any indication information of the first information associated with the second signaling.
  • the indication information of the first information generally refers to the indication information that is functionally used to indicate the first information associated with the second signaling.
  • the first indication information of the first information in step 501 is specific, that is, specific indication information included in the first signaling.
  • the network device sends the second signal to the terminal device in the second time unit.
  • the terminal device receives the second signal in the second time unit according to the first indication information and the second signaling.
  • step 504 the terminal device determines the first information associated with the second signal according to the indication information of the first information, and according to the first information and the second signal Signaling receives the second signal within the second unit of time.
  • the first information includes at least one of frequency domain resource information, modulation and coding strategy information, antenna port information, bandwidth part information, DMRS sequence initialization information, scheduled PUCCH transmit power control command, and PUCCH resource index. one.
  • the terminal device Before the terminal device in step 504 receives the second signal in the second time unit according to the indication information of the first information and the second signaling, the terminal device may use any of the following One way to determine the resources occupied by the second signal:
  • the first information may be frequency domain resource information, modulation and coding strategy information, antenna port information, bandwidth part information, DMRS sequence initialization information, scheduled PUCCH transmit power control command or PUCCH resource index.
  • the terminal device determines the frequency domain resource occupied by the second signal according to the indication information of the frequency domain resource, so that the frequency domain resource occupied by the second signal and The second signaling receives the second signal.
  • the terminal device determines the antenna port corresponding to the second signal according to the indication information of the antenna port information, so as to receive the antenna port according to the antenna port corresponding to the second signal and the second signaling. second signal.
  • the terminal device determines the modulation and coding information corresponding to the second signal according to the index information of the modulation and coding information, so as to obtain the modulation and coding information corresponding to the second signal and The second signaling receives the second signal.
  • the terminal device determines the bandwidth part corresponding to the second signal according to the indication information of the bandwidth part information, and receives the first signal according to the bandwidth part information corresponding to the second signal and the second signaling. Second signal.
  • the terminal device determines the DMRS sequence corresponding to the second signal according to the indication information of the DMRS sequence initialization information, so as to receive the DMRS sequence corresponding to the second signal and the second signaling. second signal.
  • the first information may include frequency domain resource information, modulation and coding strategy information, antenna port information, bandwidth part information, DMRS sequence initialization information, scheduled PUCCH transmit power control command or PUCCH resource index. multiple.
  • the first indication information includes at least two sub-indication information of the first sub-indication information and the second sub-indication information, wherein the first sub-indication information indicates Frequency domain resource information, the second sub-indication information indicates antenna port information, the terminal device determines the frequency domain resources occupied by the second signal according to the first sub-indication information, and determines the antenna port corresponding to the second signal according to the second sub-indication information , so that the second signal is received according to the frequency domain resource occupied by the second signal, the antenna port and the second signaling.
  • the terminal device determines the frequency domain resources occupied by the second signal according to the first sub-indication information, and determines the modulation and coding corresponding to the second signal according to the second sub-indication information encoding information, so as to receive the second signal according to the frequency domain resources occupied by the second signal, the modulation and encoding information and the second signaling.
  • the first indication information includes at least the first sub-indication information, the second sub-indication information and the third sub-indication information, wherein the first indication information One sub-indication information indicates frequency domain resource information, the second sub-indication information indicates antenna port information, and the third sub-indication information indicates modulation and coding information, and the terminal device determines frequency domain resources occupied by the second signal according to the first sub-indication information , determine the antenna port corresponding to the second signal according to the second sub-indication information, and determine the modulation and coding information corresponding to the second signal according to the third sub-indication information, so that according to the frequency domain resources occupied by the second signal, the corresponding An antenna port, corresponding modulation and coding information, and second signaling receive the second signal.
  • the first information includes but is not limited to the above examples.
  • the first information may include frequency domain resource information, modulation and coding strategy information, antenna port information, bandwidth part information, DMRS sequence initialization information, and scheduled PUCCH transmit power.
  • One, two or more items of the control command or the PUCCH resource index may also include other resource information for receiving signals, which is not limited in this application.
  • the indication information included in the first indication information may be indication information of frequency domain resource information, indication information of modulation and coding strategy information, indication information of antenna port information, indication information of bandwidth part information, indication information of DMRS sequence initialization information, indication information of scheduled PUCCH
  • the transmission power control command indication information or the PUCCH resource index indication information, the name of the indication information included in the first indication information is not specifically limited in this application, as long as it can indicate that the corresponding resource information belongs to this document. The scope of the application.
  • the first signaling includes first indication information of the first information associated with the first signal, and it is not limited that only the first indication information can be included in the first signaling. That is to say, in addition to the first indication information, the first signaling may also include second indication information other than the first indication information.
  • the second indication information may include indication information for indicating the HARQ process, may also include indication information for indicating whether it is a new transmission, and may also include indication information for indicating time resources occupied by the first signal, Of course, other information may also be included, which is not limited here.
  • the first time unit and the second time unit respectively include one or more time slots, mini-slots or symbols.
  • the first time unit and the second time unit do not overlap in time.
  • the first time unit and the second time unit are within the same uplink and downlink switching period.
  • one uplink and downlink switching cycle includes 5 time slots, of which time slots 0, 1, 2, and 3 are downlink time slots or downlink dominant time slots (when there are more downlink symbols than uplink symbols) slot), and time slot 4 is an uplink time slot.
  • the first time unit is time slot 0, and the second time unit may be time slot 1, or time slot 2 or time slot 3.
  • the first time unit may include N1 first time slots
  • the second time unit may include N2 second time slots, wherein N1 and N2 are positive integers, and each of the N1 first time slots
  • the first signals carried in the time slots correspond to the same HARQ process
  • the first signals carried in each of the N1 first time slots correspond to different transport blocks.
  • the first signaling includes indication information for indicating the HARQ process of the first signal carried in the N1 first time slots
  • the first signaling further includes the indication information for indicating the N1 first time slots Whether the signal carried in each time slot is a new transmission, and the indication information of the redundancy version index.
  • the second signaling includes indication information used to indicate the HARQ process of the second signal carried in the N2 second time slots, and the second signaling may also include information used to indicate the HARQ process of the N2 second time slots. Whether the signal carried in each time slot is a new transmission, and the indication information of the redundancy version index.
  • the first signaling includes indication information for indicating the HARQ process of the first signal carried in the two first time slots, and the value of the indication information may be 0- Any value of M, where M is a positive integer.
  • the first signaling includes two indication information A1 and A2, the A1 and A2 are respectively used to indicate whether the signals carried in the two first time slots are new transmissions, wherein the A1 is used to indicate the two first time slots. Whether the signal carried in one of the time slots is a new transmission, the A2 is used to indicate whether the signal carried in the other time slot of the two first time slots is a new transmission.
  • the first signaling may also include two indication information B1 and B2, the B1 and B2 are respectively used to indicate the indication information of the redundancy version index corresponding to the signals carried in the two first time slots, wherein, B1 uses In order to indicate the redundancy version index corresponding to the signal carried in one of the two first time slots, B2 is used to indicate the redundancy corresponding to the signal carried in the other time slot of the two first time slots.
  • the version index, where the value of the redundant version index can be any value from 0 to K, where K is a positive integer.
  • N2 may be equal to or not equal to N1, may be greater than N1, or may be smaller than N1, which is not limited in this embodiment.
  • the first signaling and the second signaling in this application may be control signaling, such as physical layer control signaling, media access control (Media access control, MAC) layer control signaling, or wireless Resource control (Radio Resource control, RRC) layer control signaling.
  • control signaling such as physical layer control signaling, media access control (Media access control, MAC) layer control signaling, or wireless Resource control (Radio Resource control, RRC) layer control signaling.
  • DCI Downlink control information
  • the first signaling is Normal-DCI, that is, DCI in the prior art.
  • the second signaling is mini-DCI newly defined by the present invention, wherein mini-DCI at least does not include a frequency domain resource indication field and/or an antenna port indication field, while Normal-DCI must include a frequency domain resource indication field and an antenna port indication field Indicate field.
  • the format of the mini-DCI can be 1_1, which can include one or more of the following fields:
  • Bandwidth part indication used to indicate the index of the bandwidth part where the PDSCH is located.
  • Frequency domain resource indication used to indicate the frequency domain resource location occupied by PDSCH;
  • Modulation and coding strategy used to indicate the modulation and coding rate of PDSCH; or
  • Antenna port an index used to indicate the antenna port corresponding to the PDSCH;
  • the initial value of the demodulation reference signal sequence used to indicate the initial value of the sequence in the demodulation reference signal corresponding to the PDSCH.
  • mini-DCI may not include one or more of the following fields:
  • - PUCCH resource indication used to instruct the terminal device to send the PUCCH resource
  • Sounding Reference Signal Sounding Reference Signal, SRS
  • SRS Sounding Reference Signal
  • both the first signal and the second signal in this application may be PDSCH.
  • the first PDSCH is scheduled by Normal-DCI
  • the second PDSCH is scheduled by mini-DCI. Since the Normal-DCI includes indication information of all relevant information of the first PDSCH, the terminal device can only receive the first signal according to the first signaling. However, the mini-DCI does not include the indication information of at least one of the PUCCH transmission power control command, the PUCCH resource indication, and the SRS request, so the terminal device needs to determine the information that is not explicitly indicated in the mini-DCI according to the indication information included in the Normal-DCI.
  • the terminal device may determine the access resource of the second signal according to the indication information of the first information and other information included in the second signaling, The second signal is then received using the revenue resource.
  • the terminal device respectively determines the occupied area of the second signal according to the frequency domain resource indication information and the antenna port indication information in the first signaling.
  • first signal and the second signal in the embodiment of the present invention may correspond to the same process or may correspond to different processes.
  • the network device For a terminal device whose channel changes slowly, when the terminal device needs to receive PDSCH in multiple consecutive time slots, the network device will send DCI to the terminal in each time slot to schedule the PDSCH, and each time slot All the DCIs in the DCI carry the frequency domain resource indication field and the antenna port indication field indicating the same content, thus increasing unnecessary signaling overhead.
  • the first signaling includes first indication information of first information associated with the first signal and the second signal, and the second signaling does not include information related to the second signal indication information of the associated first information.
  • the overhead of the indication information carried in the second signaling is reduced, and the communication efficiency is improved.
  • the network device uses the same frequency domain resources and modulation in the consecutive time slots. and coding strategy, antenna port or bandwidth part to send signals to the terminal equipment, will not have a negative impact on the transmission performance, so that the overhead of the second signaling can be reduced without reducing the communication quality.
  • the methods provided by the embodiments of the present application are respectively introduced from the perspectives of network equipment, terminal equipment, and interaction between network equipment and terminal equipment.
  • the network device and the terminal device may include hardware structures and/or software modules, and implement the above functions in the form of hardware structures, software modules, or hardware structures plus software modules . Whether a certain function of the above functions is performed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • FIG. 7 and FIG. 8 are schematic structural diagrams of possible communication apparatuses provided by embodiments of the present application. These communication apparatuses can implement the functions of the terminal equipment or the network equipment in the above method embodiments, and thus can also achieve the beneficial effects of the above method embodiments.
  • the communication device may be the terminal device 110 as shown in FIG. 1 , the access network device 120 as shown in FIG. 1 , or the device applied to the terminal device or the access network device. modules (eg chips).
  • the communication device 700 includes a storage module 701 and a transceiver module 702 .
  • the communication apparatus 700 may be used to implement the functions of the terminal device or the network device in the method embodiment shown in FIG. 5 or FIG. 5A.
  • the storage module 701 is used to store computer programs or instructions.
  • the first indication information of the first information associated with the two signals the first signal is received within the first time unit according to the first signaling, and the second signaling is received, and the second signaling indicates the
  • the terminal device receives a second signal in a second time unit, the second signaling does not include the indication information of the first information associated with the second signal, and according to the first indication information and the first Two signaling receives the second signal within the second time unit.
  • the communication device may further include a processing module 703 for determining the first information associated with the second signal according to the first indication information; the transceiver module 702 for determining the first information associated with the second signal according to the first indication information; Information and the second signaling receive the second signal within the second unit of time.
  • the storage module 701 is used to store computer programs or instructions.
  • the transceiver module 702 is configured to send the first signaling to the terminal device, where the first signaling is used to instruct the terminal device to receive the first signal in the first time unit, and the first signaling includes the first signaling and the first signaling.
  • the first indication information of the first information associated with the signal and the second signal, the first signal is sent within the first time unit, and the second signaling is sent to the terminal device, where the second signaling is used to indicate
  • the terminal device receives a second signal in the second time unit, the second signaling does not include indication information of the first information associated with the second signal, and sends the second signal to the second time unit in the second time unit.
  • the terminal device sends the second signal.
  • the communication apparatus further includes a processing module 703, configured to determine that the first information associated with the first signal and the second signal are the same.
  • the communication apparatus 800 includes a processor 810 and an interface circuit 820 .
  • the processor 810 and the interface circuit 820 are coupled to each other.
  • the interface circuit 820 can be a transceiver or an input-output interface.
  • the communication apparatus 800 may further include a memory 8030 for storing instructions executed by the processor 810 or input data required by the processor 810 to execute the instructions or data generated after the processor 810 executes the instructions.
  • the terminal device chip When the above communication device is a chip applied to a terminal device, the terminal device chip implements the functions of the terminal device in the above method embodiments.
  • the terminal device chip receives information from other modules (such as a radio frequency module or an antenna) in the terminal device, and the information is sent by the network device to the terminal device; or, the terminal device chip sends information to other modules (such as a radio frequency module or an antenna) in the terminal device antenna) to send information, the information is sent by the terminal equipment to the network equipment.
  • modules such as a radio frequency module or an antenna
  • the network device chip When the above communication device is a chip applied to a network device, the network device chip implements the functions of the network device in the above method embodiments.
  • the network device chip receives information from other modules (such as a radio frequency module or an antenna) in the network device, and the information is sent by the terminal device to the network device; or, the network device chip sends information to other modules in the network device (such as a radio frequency module or an antenna). antenna) to send information, the information is sent by the network equipment to the terminal equipment.
  • modules such as a radio frequency module or an antenna
  • processor in the embodiments of the present application may be a central processing unit (central processing unit, CPU), and may also be other general-purpose processors, digital signal processors (digital signal processors, DSP), application-specific integrated circuits (application specific integrated circuit, ASIC), field programmable gate array (field programmable gate array, FPGA) or other programmable logic devices, transistor logic devices, hardware components or any combination thereof.
  • CPU central processing unit
  • DSP digital signal processors
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • a general-purpose processor may be a microprocessor or any conventional processor.
  • the method steps in the embodiments of the present application may be implemented in a hardware manner, or may be implemented in a manner in which a processor executes software instructions.
  • Software instructions can be composed of corresponding software modules, and software modules can be stored in random access memory (RAM), flash memory, read-only memory (ROM), programmable read-only memory (programmable ROM) , PROM), erasable programmable read-only memory (erasable PROM, EPROM), electrically erasable programmable read-only memory (electrically EPROM, EEPROM), registers, hard disks, removable hard disks, CD-ROMs or known in the art in any other form of storage medium.
  • An exemplary storage medium is coupled to the processor, such that the processor can read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and storage medium may reside in an ASIC.
  • the ASIC may be located in the access network equipment or in the terminal equipment.
  • the processor and the storage medium may also exist in the access network device or the terminal device as discrete components.
  • the computer program product includes one or more computer programs or instructions.
  • the computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer program or instructions may be stored in or transmitted over a computer-readable storage medium.
  • the computer-readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server that integrates one or more available media.
  • the usable media can be magnetic media, such as floppy disks, hard disks, magnetic tapes; optical media, such as DVD; and semiconductor media, such as solid state disks (SSD).
  • “at least one” means one or more, and “plurality” means two or more.
  • “And/or”, which describes the relationship of the associated objects, indicates that there can be three kinds of relationships, for example, A and/or B, it can indicate that A exists alone, A and B exist at the same time, and B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related objects are a kind of "or” relationship; in the formula of this application, the character "/” indicates that the related objects are a kind of "division” Relationship.

Abstract

本申请提供了一种通信方法及装置，用以解决在信道缓慢变化的场景中，由于资源调度而引起的信令开销大的问题。在本申请中，终端设备接收的第一信令中包括与所述第一信号和第二信号关联的第一信息的第一指示信息，所述终端设备接收第二信令，所述第二信令指示所述终端设备在第二时间单元内接收第二信号，所述第二信令中不包括与所述第二信号关联的所述第一信息的指示信息，所述终端设备根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号。由于第二信令不再携带与第二信号关联的第一信息的指示信息，从而降低了第二信令的开销，提升了通信效率。

Description

一种通信方法与装置 技术领域
本申请实施例涉及无线通信领域，尤其涉及一种通信方法以及装置。
背景技术
在第五代移动通信技术(the 5th generation，5G)新空口(new radio interface，NR)系统和长期演进(long term evolution，LTE)系统中，网络设备在每个时隙中向终端设备发送下行控制信息(Downlink Control Information，DCI)，用于指示所述终端设备在连续多个时隙中接收物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，并且每个DCI中都包括用于指示PDSCH对应频域位置、天线端口等指示字段。
对于信道缓慢变化的终端设备，当终端设备需要在连续多个时隙中接收PDSCH时，网络设备会在每个时隙中都向终端发送DCI，用于调度所述PDSCH，并且每个时隙内的DCI都会携带指示相同内容的频域资源指示字段和天线端口指示字段，因此增加了不必要的信令开销。
发明内容
本申请实施例提供一种通信方法及设备，用于减小信令开销。
第一方面，本申请提供一种通信方法，该方法的执行主体可以是终端设备，也可以是应用于终端设备中的芯片。下面以执行主体是终端设备为例进行描述。终端设备可接收来自网络设备的第一信令，所述第一信令指示所述终端设备在第一时间单元内接收第一信号，所述第一信令中包括与所述第一信号和第二信号关联的第一信息的第一指示信息。所述终端设备可根据所述第一信令在所述第一时间单元内接收所述第一信号。所述终端设备接收第二信令，所述第二信令指示所述终端设备在第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的所述第一信息的指示信息。所述终端设备可根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号。其中，所述第一信息包括频域资源信息、调制和编码策略信息、天线端口信息或带宽部分信息中的至少一项。
上述方式能够使第二信令中无需携带用于指示第二信号关联的第一信息的指示信息，从而降低第二信令中携带的指示信息的开销，提升通信效率。进一步的，对于信道缓慢变化的终端设备，网络设备与该终端设备在连续多个时隙内的信道质量几乎无变化，从而网络设备在该连续多个时隙内采用相同的频域资源、调制和编码策略、天线端口或带宽部分中的一项或多项向该终端设备发送信号，因此不会对传输性能有负面影响，从而能够在不降低通信质量的条件下，降低发送第二信令的开销。
在一种可能的设计中，所述终端设备根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号，包括：所述终端设备可根据所述第一指示信息确定与所述第二信号关联的所述第一信息，以及根据所述第一信息和所述第二信令在所述第二时间单元内接收所述第二信号。上述方式能够让终端设备确定第二信号对应的第一信息，以使该终端设备能够正确的接收第二信号。从而能够在不降低通信质量的条件下，降低发送第二信令的开销。
在一种可能的设计中，所述第一信息的指示信息包括频域资源指示信息和天线端口指示信息，所述终端设备根据所述频域资源指示信息和所述天线端口指示信息分别确定第二信号所占用的频域资源以及所述频域资源所对应的天线端口编号，根据所述第二信号所占用的频域资源、所述频域资源所对应的天线端口编号以及第二信令，在所述第二时间单元内接收所述第二信号。上述方式能够让终端设备确定第二信号对应的频域资源和天线端口编号，以使该终端设备能够正确的接收第二信号。从而能够在不降低通信质量的条件下，降低发送第二信令的开销。
在一种可能的设计中，所述第一时间单元与所述第二时间单元分别包括一个或多个时隙、微时隙或符号。示例性的，所述第一时间单元与所述第二时间单元分别为一个时隙，且所述第一时间单元与所述第二时间单元在时间上没有重叠。上述方式能够让第一信号与第二信号在时域上没有相互干扰，以使该终端设备能够正确的接收第一信号和第二信号。从而能够在不降低通信质量的条件下，降低发送第二信令的开销。
在一种可能的设计中，所述第一时间单元与所述第二时间单元对应同一个上下行切换周期。其中，上下行切换周期可以为一段时间，在该一个切换周期内，发送信号切换成接收信号只能执行一次。因此上述方式能够保证所述第一信号与所述第二信号的相位连续，以使终端设备在接收第二信号时能够利用第一信号对应的解调参考信号进行接收，提升第二信号的接收性能。
第二方面，本申请提供一种通信方法，该方法的执行主体可以是网络设备也可以是应用于网络设备中的芯片。下面以执行主体是网络设备为例进行描述。有益效果请参考第一方面，在此不再赘述。
网络设备可向终端设备发送第一信令，所述第一信令用于指示终端设备在第一时间单元内接收第一信号，所述第一信令中包括与第一信号和第二信号所关联的第一信息的第一指示信息。所述网络设备可在所述第一时间单元内发送所述第一信号，所述网络设备向终端设备发送第二信令，所述第二信令用于指示所述终端设备在所述第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的第一信息的指示信息。所述网络设备可在所述第二时间单元向所述终端设备发送所述第二信号。其中，所述第一信息包括频域资源信息、调制和编码策略信息、天线端口信息、带宽部分信息中的至少一项。
在一种可能的设计中，所述网络设备向所述终端设备发送所述第一信令之前，所述网络设备还需要确定所述第一信号和所述第二信号所关联的第一信息相同。
在一种可能的设计中，所述第一时间单元与所述第二时间单元分别包括一个或多个时隙、微时隙或符号。示例性的，所述第一时间单元与所述第二时间单元分别为一个时隙，且所述第一时间单元与所述第二时间单元在时间上没有重叠。所述第一时间单元与所述第二时间单元对应同一个上下行切换周期。
第三方面，提供一种通信装置，有益效果可以参见第一方面的描述此处不再赘述。所述通信装置具有实现上述第一方面的方法实例中行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，所述通信装置包括存储模块与收发模块，其中所述存储模块用于存储计算机程序或指令。所述收发模块，用于接收来自网络设备的接收第一信令，所述第一信令指示所述终端设备在第一时间单元内接收第一信号，所述第一信令中包括与所述第一信号和第二信号关联的第一信息的第一指示信息，根据所述第一信令在所述第一时间单元内接收所述第一信号，接收第二信令，所述第二信令指示所述终端设备在第二时间单元内接收第 二信号，所述第二信令不包括与所述第二信号关联的所述第一信息的指示信息，以及根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号。这些模块可以执行上述第一方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第四方面，提供一种通信装置，有益效果可以参见第二方面的描述此处不再赘述。所述通信装置具有实现上述第二方面的方法实例中行为的功能。所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个与上述功能相对应的模块。在一个可能的设计中，所述通信装置包括存储模块与收发模块，其中所述存储模块用于存储计算机程序或指令。所述收发模块用于向终端设备发送第一信令，所述第一信令用于指示终端设备在第一时间单元内接收第一信号，所述第一信令中包括与第一信号和第二信号所关联的第一信息的第一指示信息，在所述第一时间单元内发送所述第一信号。所述收发模块用于向终端设备发送第二信令，所述第二信令用于指示所述终端设备在所述第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的第一信息的指示信息。所述收发模块，用于在所述第二时间单元向所述终端设备发送所述第二信号。这些模块可以执行上述第二方面方法示例中的相应功能，具体参见方法示例中的详细描述，此处不做赘述。
第五方面，提供了一种通信装置，该通信装置可以为上述方法实施例中的终端设备，或者为设置在终端设备中的芯片。该通信装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使通信装置执行上述方法实施例中由终端设备所执行的方法。
第六方面，提供了一种通信装置，该通信装置可以为上述方法实施例中的网络设备，或者为设置在网络设备中的芯片。该通信装置包括通信接口以及处理器，可选的，还包括存储器。其中，该存储器用于存储计算机程序或指令，处理器与存储器、通信接口耦合，当处理器执行所述计算机程序或指令时，使通信装置执行上述方法实施例中由网络设备所执行的方法。
第七方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码并运行时，使得上述各方面中由终端设备执行的方法被执行。
第八方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序代码，当所述计算机程序代码被运行时，使得上述各方面中由网络设备执行的方法被执行。
第九方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于实现上述各方面的方法中终端设备的功能。在一种可能的设计中，所述芯片系统还包括存储器，用于保存程序指令和/或数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十方面，本申请提供了一种芯片系统，该芯片系统包括处理器，用于实现上述各方面的方法中网络设备的功能。在一种可能的设计中，所述芯片系统还包括存储器，用于保存程序指令和/或数据。该芯片系统，可以由芯片构成，也可以包括芯片和其他分立器件。
第十一方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述各方面中由终端设备执行的方法。
第十二方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机程序，当该计算机程序被运行时，实现上述各方面中由网络设备执行的方法。
附图说明
图1为本申请的实施例应用的移动通信系统的架构示意图；
图2为本申请的实施例中一种可能的资源示意图；
图3为本申请的实施例DMRS端口的一种可能的配置示意图；
图4为本申请的实施例中子帧、符号、时隙和微时隙对应关系的一种示意图；
图5为本申请的实施例中一种可能的通信方法示意图；
图5A为本申请的实施例中另一种可能的通信方法示意图；
图6为本申请的实施例中一种可能的时间单元示意图；
图7为本申请实施例中通信装置700的示意图；
图8为本申请实施例中通信装置800的示意图。
具体实施方式
如图1所示，为本申请实施例适用的一种可能的网络架构示意图，包括终端设备110和接入网设备120。终端设备110和接入网设备120间可通过Uu空口进行通信，Uu空口可以理解为通用的终端设备和网络设备之间的接口(universal UE to network interface)。Uu空口的传输包括上行传输和下行传输。
示例的，上行传输指终端设备110向接入网设备120发送上行信息。其中，上行信息可包括上行数据信息、上行控制信息、参考信号(reference signal，RS)中的一个或多个。用于传输上行信息的信道称为上行信道，上行信道可以为物理上行共享信道(physical uplink shared channel，PUSCH)或物理上行控制信道(physical uplink control channel，PUCCH)。PUSCH用于承载上行数据，上行数据也可以称为上行数据信息。PUCCH用于承载终端设备反馈的上行控制信息(uplink control information，UCI)。UCI中可以包括信道状态信息(channel state information，CSI)、肯定应答(acknowledgement，ACK)/否定应答(negative acknowledgement，NACK)等。
示例的，下行传输指接入网设备120向终端设备110发送下行信息。下行信息可以包括下行数据信息、下行控制信息和下行参考信号中的一个或多个。下行参考信号可以为信道状态信息参考信号(channel state information reference signal，CSI-RS)或相位跟踪参考信号(phase tracking reference signal，PTRS)。用于传输下行信息的信道称为下行信道，下行信道可以为物理下行共享信道(physical downlink shared channel，PDSCH)或物理下行控制信道(physical downlink control channel，PDCCH)。所述PDCCH用于承载下行控制信息(downlink control information，DCI)，PDSCH用于承载下行数据，下行数据也可称为下行数据信息。
可选的，在图1所示的网络架构中，还可包括核心网设备130。其中，终端设备110可通过无线的方式与接入网设备120相连，接入网设备120可通过有线或无线的方式与核心网设备130相连。核心网设备130与接入网设备120可以是独立的不同的物理设备，或者，核心网设备130与接入网设备120可以是相同的物理设备，该物理设备上集成有核心网设备130与接入网设备120的全部/部分逻辑功能。
需要说明的是，在图1所示的网络架构中，终端设备110可以是固定位置的，也可以是可移动的，本申请不作限定。图1所示的网络架构中，还可包括其它网络设备，比如无线中继设备和无线回传设备等，本申请不作限定。图1所示的架构中，对终端设备、接入网设备和核心网设备的数量不作限定。
本申请实施例中的技术方案，可应用于各种通信系统。比如，长期演进(long term  evolution，LTE)系统、第五代(5th generation，5G)移动通信系统以及未来的移动通信系统等。
基于图1的提供的网络架构，多址接入方式通常采用正交频分多址(Orthogonal Frequency Division Multiplexing Access，OFDMA)方式。其中正交频分多址方式的主要特点是将传输资源划分为相互正交的时频资源单元(Resource Element，RE),网络设备与终端设备之间通过RE传输信号，由于不同的RE之间相互正交，使得终端设备可以对每个RE上发送的信号进行单独接收。考虑到无线信道的衰落特性，RE上承载的信号经过信道传输后将产生畸变，通常将该信道畸变称为信道系数。为了能够在终端设备对信号进行恢复，通常采用基于参考信号的方案对信道系数进行估计，即网络设备在特定的RE上传输已知的信号，终端设备根据接收到的信号及已知信号对信道系数进行估计，并根据估计结果获得的所述信道系数对其他RE上的信道系数进行插值，进而利于通过估计获得的信道系数对信号进行接收解调。
在现有无线通信系统中，基站配备多根天线，用以采用多入多出技术(multiple input multiple output，MIMO)技术实现空间复用传输，即在相同的时频资源上传输多个数据，每个数据在一个独立的空间层上传输，并且每个空间层将映射到不同的天线端口上进行发送。考虑到不同天线端口到终端的信道系数不尽相同，为了终端设备能够获取多个空间层上传输的信息，需要对每个天线端口与终端之间的信道系数都进行估计，所以需要为每个天线端口配置不同的DMRS，不同天线端口对应的DMRS可采用时分、频分及码分等方式进行复用。示例性的，如图2所示，其中水平方向代表时域，竖直方向代表频域，每个小方块代表一个RE，其中DMRS端口0和1通过正交码进行复用，所以这两个端口对应的RE又称为一个码分复用(Code division multiplexing)组(CDM group)，下图的示例中DMRS端口的总数为6，CDM组的个数为3。
5G NR支持固定接入节点，这类接入节点通常安装位置固定，如安装在窗口、房顶等位置，一旦安装完成则位置不随时间而变化，从而其信道质量随时间的变化的速度相比于移动手机信道质量变化的速度更低。通常，对于固定接入节点，可以理解为网络设备与终端设备之间的信道状态在连续N个时间单元内近似相等，此时对于N个时间单元中的M个时间单元可不配置DMRS，所述M个时间单元利用前置时间单元中DMRS估计出的信道进行数据解调，从而降低导频开销。其中，所述时间单元可以为时隙，所述M与N为整数，M<N。如下图3所示，时隙#0中配置了2个DMRS符号，后续时隙#1至时隙#N不配置DMRS符号。
在信道缓慢变化的应用场景中，网络设备在每个时间单元都向终端设备发送DCI，用于指示终端设备在连续多个时间单元中从网络设备接收PDSCH，并且每个DCI中都包括用于指示PDSCH对应频域位置、天线端口等的指示信息。但是，对于信道缓慢变化的终端设备，当终端设备需要在连续多个时间单元中接收PDSCH时，网络设备会在每个时间单元中都向终端发送DCI，用于调度所述PDSCH，并且每个时间单元内的DCI都会携带指示相同内容的频域资源指示字段和天线端口指示字段，因此增加了不必要的信令开销。
基于上述，本申请提供一种通信方法，该方法的原理为：终端设备接收的第一信令中包括与第一信号和第二信号关联的第一信息的第一指示信息，所述终端设备接收的第二信令不包括与所述第二信号关联的所述第一信息的指示信息，所述终端设备可以根据所述第一指示信息和所述第二信令接收第二信号。由于第二信令中不再携带第二信号相关联的第一信息的第一指示信息，因而可以降低第二信令中携带的指示信息的开销，提升了通信效率。
下面对本申请所使用到的一些名词或术语进行解释说明，该名词或术语也作为发明内容 的一部分。
一、网络设备
无线接入网设备是终端设备通过无线方式接入到该移动通信系统中的接入设备，可以是基站(base station)、演进型基站(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、5G移动通信系统中的下一代基站(next generation NodeB，gNB)、未来移动通信系统中的基站或WiFi系统中的接入节点等；也可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)，也可以是分布式单元(distributed unit，DU)；也可以是一种V2X技术中的网络设备为路侧单元(road side unit，RSU)，基站可用于将收到的空中帧与网际协议(IP)分组进行相互转换，作为终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。RSU可以是支持车到一切(vehicle-to-everything，V2X)应用的固定基础设施实体，可以与支持V2X应用的其他实体交换消息。接入网设备还可协调对空口的属性管理。本申请的实施例对无线接入网设备所采用的具体技术和具体设备形态不做限定。在本申请中，无线接入网设备简称网络设备，如果无特殊说明，网络设备均指无线接入网设备。
二、终端设备
终端设备也可以称为终端Terminal、用户设备(user equipment，UE)、移动台(mobile station，MS)、移动终端(mobile terminal，MT)等。终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
本申请实施例中，用于实现网络设备的功能的装置可以是网络设备；也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
网络设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和人造卫星上。本申请的实施例对网络设备和终端设备的应用场景不做限定。
网络设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过免授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和免授权频谱进行通信。网络设备和终端设备之间可以通过6千兆赫(gigahertz，GHz)以下的频谱进行通信，也可以通过6GHz以上的频谱进行通信，还可以同时使用6GHz以下的频谱和6GHz以上的频谱进行通信。本申请的实施例对网络设备和终端设备之间所使用的频谱资源不做限定。
在本申请的实施例中，时域符号可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)符号，也可以是单载波频分复用(single carrier-frequency division multiplexing，SC-FDM)符号。如果没有特别说明，本申请实施例中的符号均指时域符号。
三、时间单元
时间单元为用于数据传输的时域单元，可包括无线帧(radio frame)、子帧(subframe)、时隙(slot)、微时隙(mini-slot)和时域符号(symbol)等时域单位。在5G新空口(new radio， NR)中，一个无线帧可以包括10个子帧，一个子帧可以包括一个或多个时隙，具体一个子帧包括多少个时隙与子载波间隔相关。
帧结构参数(numerology)，可包括子载波间隔和/或循环前缀(cyclic prefix，CP)类型等。CP类型也可以称为CP长度，或简称为CP。所述CP类型可为扩展(extended)CP，或者为正常(normal)CP。扩展CP下一个时隙可包括12个时域符号，正常CP下一个时隙可包括14个时域符号。时域符号可以简称为符号。时域符号可以是正交频分复用(orthogonal frequency division multiplexing，OFDM)符号，也可以是基于离散傅立叶变换扩展的正交频分复用(discrete fourier transform spread orthogonal frequency division multiplexing，DFT-s-OFDM)符号。本申请实施例中以时域符号是OFDM符号为例进行说明。
如表1所示，在NR系统中，可以支持5种帧结构参数，编号分别为0至4。例如，编号为2的帧结构参数为：子载波间隔为60kHz，CP为正常CP或扩展CP。
表1支持的帧结构参数(numerologies)
Figure PCTCN2020140908-appb-000001
针对不同的子载波间隔可以有不同的时隙长度。比如子载波间隔为15kHz时，一个时隙为1毫秒(millisecond，ms)；子载波间隔为30kHz时，一个时隙为0.5ms。微时隙，又称为迷你时隙，可以是比时隙更小的单位，一个微时隙可以包括一个或多个符号。比如一个微时隙可以包括2个符号、4个符号或7个符号等。一个时隙可以包括一个或多个微时隙。
如图4所示，以15kHz的子载波间隔为例，1个无线帧可持续10ms，每个子帧可持续1ms，1个无线帧包括10个子帧，每个时隙持续1ms，每个子帧可包括1个时隙，每个时隙可包括14个符号。进一步的，微时隙可包括4个符号、2个符号或7个符号等。
四、频域单元
频域单元可包括一个或多个资源块(resources block，RB)、资源元素(resources element，RE)、资源块组(resources block group，RBG)或资源元素组(resource element group，REG)。示例的，RBG可包括一个或多个RB，比如6个；RB可包括一个或多个RE，比如12个；REG在时域上可包括一个时域符号，在频域上可包括一个RB。
五、天线端口
天线端口是用于传输的逻辑端口，一个天线端口包括多个物理天线。从终端设备的角度看，每一个天线端口对应于一个独立的无线信道。
六、解调参考信号
解调参考信号(Demodulation Reference Signal，DMRS)是用于对接收信号进行恢复的参考信号，DMRS为终端设备已知的信号，终端设备可以根据所述接收信号和所述DMRS信号，确定无线信道的衰落特性，即无线信道的信道系数，所述信道系数用于对接收信号进行恢复。 5G NR系统中，考虑到不同天线端口到终端设备的信道系数不尽相同，为了终端设备能够获取多个空间层上传输的信息，需要对每个天线端口与终端设备之间的信道系数都进行估计，所以需要为每个天线端口配置不同的DMRS，不同天线端口对应的DMRS可采用时分、频分及码分等方式进行复用。目前，5G NR系统最大可支持12个MDRS端口。
在本申请的实施例中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a,b,或c中的至少一项(个)，可以表示：a,b,c,a-b,a-c,b-c,或a-b-c，其中a,b,c可以是单个，也可以是多个。
以及，除非有相反的说明，本申请实施例提及“第一”、“第二”等序数词是用于对多个对象进行区分，不用于限定多个对象的顺序、时序、优先级或者重要程度。例如，第一信息和第二信息，只是为了区分不同的信令，而并不是表示这两种信息的内容、优先级、发送顺序或者重要程度等的不同。
如上介绍了本申请实施例涉及的一些概念，下面介绍本申请实施例。如图5所示，本申请实施例提供一通信方法的流程示意图，该方法可以由终端设备和网络设备执行，或者也可以由终端设备中的芯片和网络设备中的芯片执行。图5中的网络设备可为上述图1中的接入网设备120，终端设备可为上述图1中的终端设备110。图5所示的方法可包括以下操作。
501、网络设备向终端设备发送第一信令。对应的，所述终端设备接收所述第一信令。
所述第一信令用于指示终端设备在第一时间单元内接收第一信号，所述第一信令中包括与所述第一信号和第二信号关联的第一信息的第一指示信息。例如，所述第一信息为频域资源信息，则所述第一信令中包括与第一信号关联的频域资源信息的第一指示信息，以及与第二信号关联的频域资源信息的第一指示信息。
如图5A所示，步骤501之前，所述方法还可以包括：所述网络设备确定所述第一信号和所述第二信号所关联的第一信息相同。
502、所述网络设备在所述第一时间单元内发送所述第一信号。相应的，所述终端设备根据所述第一信令在所述第一时间单元内接收所述第一信号。
503、网络设备向终端设备发送第二信令。对应的，所述终端设备接收第二信令。
所述第二信令用于指示所述终端设备在所述第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的第一信息的指示信息。
步骤501中的第一信息的第一指示信息是与所述第二信号相关联，而步骤503中，第二信令中不包括与第二信号相关联的第一信息的任何指示信息。换句话说，在步骤501中，所所述第一信号和所述第二信号关联相同的第一指示信息。而在步骤503中的指示信息是指与所述第二信令关联的第一信息的任何指示信息。其中，所述第一信息的指示信息泛指功能上用于指示第二信令关联的第一信息的指示信息。而步骤501中的所述第一信息的第一指示信息为特指，即第一信令中包括的具体的指示信息。
504、所述网络设备在所述第二时间单元向所述终端设备发送所述第二信号。对应的，所述终端设备根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号。
步骤504的一种可实现方式为：所述终端设备根据所述第一信息的指示信息确定与所述 第二信号相关联的所述第一信息，根据所述第一信息和所述第二信令在所述第二时间单元内接收所述第二信号。
在一个示例中，所述第一信息包括频域资源信息、调制和编码策略信息、天线端口信息、带宽部分信息、DMRS序列初始化信息、调度的PUCCH的发送功率控制命令、PUCCH资源索引中的至少一项。
在步骤504中的所述终端设备根据所述第一信息的指示信息和所述第二信令在所述第二时间单元内接收所述第二信号之前，所述终端设备可以采用下述任一方式确定第二信号占用的资源：
示例性的，第一信息可以为频域资源信息、调制和编码策略信息、天线端口信息、带宽部分信息、DMRS序列初始化信息、调度的PUCCH的发送功率控制命令或PUCCH资源索引。例如，当第一信息为频域资源信息时，所述终端设备根据所述频域资源的指示信息确定第二信号占用的频域资源，从而根据所述第二信号所占用的频域资源以及第二信令接收所述第二信号。当第一信息为天线端口信息，所述终端设备根据所述天线端口信息的指示信息确定第二信号对应的天线端口，从而根据所述第二信号对应的天线端口以及第二信令接收所述第二信号。当第一信息为调制和编码策略信息，所述终端设备根据所述调制和编码信息的指信息确定第二信号对应的调制和编码信息，从而根据所述第二信号对应的调制和编码信息以及第二信令接收所述第二信号。当第一信息为带宽部分信息，所述终端设备根据带宽部分信息的指示信息确定第二信号对应的带宽部分，从而根据所述第二信号对应的带宽部分信息以及第二信令接收所述第二信号。当第一信息为DMRS序列初始化信息，所述终端设备根据DMRS序列初始化信息的指示信息确定第二信号对应的DMRS序列，从而根据所述第二信号对应的DMRS序列以及第二信令接收所述第二信号。
示例性的，第一信息可以包括频域资源信息、调制和编码策略信息、天线端口信息、带宽部分信息、DMRS序列初始化信息、调度的PUCCH的发送功率控制命令或PUCCH资源索引中的两项或多项。例如，当第一信息至少包括频域资源信息、天线端口信息时，则第一指示信息则至少包括第一子指示信息和第二子指示信息两个子指示信息，其中，第一子指示信息指示频域资源信息，第二子指示信息指示天线端口信息，所述终端设备根据第一子指示信息确定第二信号占用的频域资源，并根据第二子指示信息确定第二信号对应的天线端口，从而根据所述第二信号所占用的频域资源、天线端口以及第二信令接收所述第二信号。当第一信息至少包括频域资源信息、调制和编码信息时，则第一指示信息则至少包括第一子指示信息和第二子指示信息两个子指示信息，其中，第一子指示信息指示频域资源信息，第二子指示信息指示调制和编码信息，所述终端设备根据第一子指示信息确定第二信号占用的频域资源，并根据第二子指示信息确定第二信号对应的调制和编码信息，从而根据所述第二信号所占用的频域资源和调制、编码信息以及第二信令接收所述第二信号。当第一信息至少包括频域资源信息、天线端口信息、调制和编码信息时，则第一指示信息则至少包括第一子指示信息、第二子指示信息和第三子指示信息，其中，第一子指示信息指示频域资源信息，第二子指示信息指示天线端口信息，第三子指示信息指示调制和编码信息，所述终端设备根据第一子指示信息确定第二信号占用的频域资源，根据第二子指示信息确定第二信号对应的天线端口，以及根据第三子指示信息确定第二信号对应的调制和编码信息，从而根据所述第二信号所占用的频域资源、对应的天线端口、对应的调制和编码信息以及第二信令接收所述第二信号。
需要特别说明的是第一信息包括并不限于上述举例，第一信息可以包括频域资源信息、调制和编码策略信息、天线端口信息、带宽部分信息、DMRS序列初始化信息、调度的PUCCH 的发送功率控制命令或PUCCH资源索引中的一项、二项或多项，也可以包括其他用于接收信号的资源信息，对此，本申请不做限定。此外，第一指示信息包括的指示信息可以是频域资源信息指示信息、调制和编码策略信息指示信息、天线端口信息指示信息、带宽部分信息指示信息、DMRS序列初始化信息指示信息、调度的PUCCH的发送功率控制命令指示信息或PUCCH资源索引指示信息中的一种或多种，对于第一指示信息所包括指示信息的命名本申请不做具体限定，只要能指示出相对应的资源信息都属于本申请所包括的范围。
需要说明的是，所述第一信令中包括与所述第一信号关联的第一信息的第一指示信息，并不限定第一信令中只能包括第一指示信息。也就是说，第一信令中除了包含第一指示信息之外，还可以包含除第一指示信息以外的第二指示信息。示例性的，第二指示信息可以包括用于指示HARQ进程的指示信息，也可以包括用于指示是否是新传的指示信息，还可以包括用于指示第一信号占用的时间资源的指示信息，当然也可以包括其他信息，此处并不限定。
在一个示例中，所述第一时间单元与所述第二时间单元分别包括一个或多个时隙、微时隙或符号。所述第一时间单元与所述第二时间单元在时间上没有重叠。其中，所述第一时间单元与所述第二时间单元在同一个上下行切换周期内。采用第一时间单元与所述第二时间单元在同一个上下行切换周期内的方式，能够保证所述第一信号与所述第二信号的相位连续，以使终端设备在接收第二信号时能够利用第一信号对应的解调参考信号进行接收，提升第二信号的接收性能。
示例性的，如图6所示，一个上下行切换周期包括5个时隙，其中时隙0、1、2、3为下行时隙或下行占优时隙(下行符号多于上行符号的时隙)，时隙4为上行时隙。第一时间单元为时隙0，第二时间单元可以为时隙1，也可以为时隙2或时隙3。
在一个示例中，第一时间单元可以包括N1个第一时隙，第二时间单元可以包括N2个第二时隙，其中，N1和N2为正整数，该N1个第一时隙中的每个时隙中承载的第一信号对应于相同的HARQ进程，同时该N1个第一时隙中的每个时隙中承载的第一信号对应于不同的传输块。在该示例中，第一信令中包含用于指示该N1个第一时隙中承载的第一信号的HARQ进程的指示信息，第一信令还包含用于指示该N1个第一时隙中每个时隙所承载的信号是否是新传，以及冗余版本索引的指示信息。同样的，第二信令中包含用于指示该N2个第二时隙中承载的第二信号的HARQ进程的指示信息，第二信令还可以包含用于指示该N2个第二时隙中每个时隙所承载的信号是否是新传，以及冗余版本索引的指示信息。
举例说明，在N1＝2的情况下，第一信令中包含一个用于指示2个第一时隙中承载的第一信号的HARQ进程的指示信息，该指示信息的取值可以是0-M中任一个取值，M为正整数。第一信令中包含两个指示信息A1与A2，所述A1与A2分别用于指示2个第一时隙中所承载的信号是否是新传，其中，所述A1用于指示2个第一时隙中的一个时隙中承载的信号是否为新传，所述A2用于指示该2个第一时隙中的另一个时隙所承载的信号是否为新传。第一信令中还可以包含两个指示信息B1与B2，所述B1与B2分别用于指示2个第一时隙中所承载的信号所对应冗余版本索引的指示信息，其中，B1用于指示该2个第一时隙中的一个时隙中承载的信号对应的冗余版本索引，B2用于指示该2个第一时隙中的另一个时隙中承载的信号对应的冗余版本索引，其中，冗余版本索引的取值可以是0-K中的任一值，K为正整数。
另外，N2的取值可以与N1相等，也可以与N1不相等，可以大于N1，也可以小于N1，本实施例中并不限定。
在一个示例中，本申请中的第一信令和第二信令可以是控制信令，例如可以是物理层控制信令，媒体介入控制(Media access control，MAC)层控制信令，或者无线资源控制(Radio  Resource control，RRC)层控制信令。为了更好的理解本申请的技术方案，下面以下行控制信息DCI为例进行说明，由于DCI承载在物理下行控制信道PDCCH中，并由网络设备发送给终端设备。其中第一信令为Normal-DCI，即现有技术中的DCI。而第二信令为本发明新定义的mini-DCI，其中，mini-DCI至少不包含频域资源指示字段和/或天线端口指示字段，而Normal-DCI必须包含频域资源指示字段和天线端口指示字段。
为了更好的理解本申请的技术方案，下面结合NR协议，对新定义的mini-DCI进行说明，例如，该mini-DCI的格式可以为1_1，可以包括如下一项或多项字段：
带宽部分指示：用于指示PDSCH所在的带宽部分索引；或
频域资源指示：用于指示PDSCH所占用的频域资源位置；或
调制和编码策略：用于指示PDSCH的调制方式和编码率；或
天线端口：用于指示PDSCH对应的天线端口的索引；或
解调参考信号序列初始值：用于指示PDSCH对应的解调参考信号中序列的初始值。
进一步，mini-DCI还可以不包括如下字段中的一项或多项：
-PUCCH发送功率控制命令，用于指示终端设备发送PUCCH的功率调整；或者
-PUCCH资源指示：用于指示终端设备发送PUCCH的资源；或者
-探测参考信号(Sounding Reference Signal，SRS)请求：用于指示终端设备发送SRS。
在一个示例中，本申请中的第一信号和第二信号都可以为PDSCH。其中，第一PDSCH由Normal-DCI调度，而第二PDSCH由mini-DCI调度。由于Normal-DCI中包括第一PDSCH所有相关信息的指示信息，所以终端设备可以只根据第一信令来接收第一信号。而mini-DCI中不包括PUCCH发送功率控制命令、PUCCH资源指示、SRS请求中的至少一项的指示信息，所以终端设备需要根据Normal-DCI包括的指示信息确定mini-DCI中未明确指示的信息(如PUCCH发送功率控制命令、PUCCH资源指示、SRS请求中的至少一项)，终端设备可以根据第一信息的指示信息和第二信令中包括的其他信息确定第二信号的接入资源，进而采用所述收入资源接收所述第二信号。
示例性的,以mini-DCI中不包括频域资源指示信息和天线端口指示信息为例，终端设备根据第一信令中的频域资源指示信息和天线端口指示信息分别确定第二信号所占用的频域资源以及其对应的天线端口编号，同时根据第二信令中的指示信息确定第二信号的其他信息，如所占用的时域资源等，从而对第二信号进行接收。
需要说明的是，本发明实施例中的第一信号和第二信号可以对应同一个进程，也可以对应不同的进程。
对于信道缓慢变化的终端设备，当终端设备需要在连续多个时隙中接收PDSCH时，网络设备会在每个时隙中都向终端发送DCI，用于调度所述PDSCH，并且每个时隙内的DCI都会携带指示相同内容的频域资源指示字段和天线端口指示字段，因此增加了不必要的信令开销。采用本申请的技术方案，所述第一信令中包括与所述第一信号和第二信号关联的第一信息的第一指示信息，所述第二信令不包括与所述第二信号关联的所述第一信息的指示信息。从而降低第二信令中携带的指示信息的开销，提升通信效率。进一步的，对于信道缓慢变化的终端设备，网络设备与该终端设备在连续多个时隙内的信道质量几乎无变化，从而网络设备在该连续多个时隙内采用相同的频域资源、调制和编码策略、天线端口或带宽部分向该终端设备发送信号，不会对传输性能有负面影响，从而能够在不降低通信质量的条件下，降低第二信令的开销。
上述本申请提供的实施例中，分别从网络设备、终端设备、以及网络设备和终端设备之 间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，网络设备和终端设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
图7和图8为本申请的实施例提供的可能的通信装置的结构示意图。这些通信装置可以实现上述方法实施例中终端设备或网络设备的功能，因此也能实现上述方法实施例所具备的有益效果。在本申请实施例中，该通信装置可以是如图1所示的终端设备110，也可以是如图1所示的接入网设备120，还可以是应用于终端设备或接入网设备的模块(如芯片)。
如图7所示，通信装置700包括存储模块701和收发模块702。通信装置700可用于实现上述图5或图5A所示的方法实施例中终端设备或网络设备的功能。
当通信装置700用于实现图5或图5A所述方法实施例中终端设备的功能时：所述存储模块701，用于存储计算机程序或指令。收发模块702，用于接收第一信令，所述第一信令指示所述终端设备在第一时间单元内接收第一信号，所述第一信令中包括与所述第一信号和第二信号关联的第一信息的第一指示信息，根据所述第一信令在所述第一时间单元内接收所述第一信号，接收第二信令，所述第二信令指示所述终端设备在第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的所述第一信息的指示信息，以及根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号。进一步，所述通信装置还可以包括处理模块703，用于根据所述第一指示信息确定与所述第二信号关联的所述第一信息；所述收发模块702，用于根据所述第一信息和所述第二信令在所述第二时间单元内接收所述第二信号。
当通信装置700用于实现图5或图5A所述方法实施例中网络设备的功能时：所述存储模块701，用于存储计算机程序或指令。所述收发模块702，用于向终端设备发送第一信令，所述第一信令用于指示终端设备在第一时间单元内接收第一信号，所述第一信令中包括与第一信号和第二信号所关联的第一信息的第一指示信息，在所述第一时间单元内发送所述第一信号，向终端设备发送第二信令，所述第二信令用于指示所述终端设备在所述第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的第一信息的指示信息，以及在所述第二时间单元向所述终端设备发送所述第二信号。进一步，所述通信装置还包括处理模块703，用于确定所述第一信号和所述第二信号所关联的第一信息相同。
关于上述存储模块701、收发模块702和处理模块703更详细的描述，可参考上述方法实施例中的相关描述，在此不再说明。
如图8所示，通信装置800包括处理器810和接口电路820。处理器810和接口电路820之间相互耦合。可以理解的是，接口电路820可以为收发器或输入输出接口。可选的，通信装置800还可以包括存储器8030，用于存储处理器810执行的指令或存储处理器810运行指令所需要的输入数据或存储处理器810运行指令后产生的数据。
当上述通信装置为应用于终端设备的芯片时，该终端设备芯片实现上述方法实施例中终端设备的功能。该终端设备芯片从终端设备中的其它模块(如射频模块或天线)接收信息，该信息是网络设备发送给终端设备的；或者，该终端设备芯片向终端设备中的其它模块(如射频模块或天线)发送信息，该信息是终端设备发送给网络设备的。
当上述通信装置为应用于网络设备的芯片时，该网络设备芯片实现上述方法实施例中网络设备的功能。该网络设备芯片从网络设备中的其它模块(如射频模块或天线)接收信息，该信息是终端设备发送给网络设备的；或者，该网络设备芯片向网络设备中的其它模块(如 射频模块或天线)发送信息，该信息是网络设备发送给终端设备的。
可以理解的是，本申请的实施例中的处理器可以是中央处理单元(central processing unit，CPU)，还可以是其它通用处理器、数字信号处理器(digital signal processor，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程门阵列(field programmable gate array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件，硬件部件或者其任意组合。通用处理器可以是微处理器，也可以是任何常规的处理器。
本申请的实施例中的方法步骤可以通过硬件的方式来实现，也可以由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(Read-Only Memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、CD-ROM或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于接入网设备或终端设备中。当然，处理器和存储介质也可以作为分立组件存在于接入网设备或终端设备中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时，全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器等数据存储设备。所述可用介质可以是磁性介质，例如，软盘、硬盘、磁带；也可以是光介质，例如，DVD；还可以是半导体介质，例如，固态硬盘(solid state disk，SSD)。
在本申请的各个实施例中，如果没有特殊说明以及逻辑冲突，不同的实施例之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例中的技术特征根据其内在的逻辑关系可以组合形成新的实施例。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A,B可以是单数或者复数。在本申请的文字描述中，字符“/”，一般表示前后关联对象是一种“或”的关系；在本申请的公式中，字符“/”，表示前后关联对象是一种“相除”的关系。
可以理解的是，在本申请的实施例中涉及的各种数字编号仅为描述方便进行的区分，并不用来限制本申请的实施例的范围。上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定。

Claims (28)

  1. 一种通信方法，其特征在于，包括：
    终端设备接收第一信令，所述第一信令指示所述终端设备在第一时间单元内接收第一信号，所述第一信令中包括与所述第一信号和第二信号关联的第一信息的第一指示信息；
    所述终端设备根据所述第一信令在所述第一时间单元内接收所述第一信号；
    所述终端设备接收第二信令，所述第二信令指示所述终端设备在第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的所述第一信息的指示信息；
    所述终端设备根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信息包括频域资源信息、调制和编码策略信息、天线端口信息或带宽部分信息中的至少一项。
  3. 根据权利要求1或2所述的方法，其特征在于，所述终端设备根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号，包括：
    所述终端设备根据所述第一指示信息确定与所述第二信号关联的所述第一信息；
    根据所述第一信息和所述第二信令在所述第二时间单元内接收所述第二信号。
  4. 根据权利要求3所述的方法，其特征在于，所述第一信息的指示信息包括频域资源指示信息和天线端口指示信息，所述终端设备根据所述第一指示信息确定所述第二信号关联的所述第一信息，根据所述第一信息和所述第二信令在所述第二时间单元内接收所述第二信号包括：
    所述终端设备根据所述频域资源指示信息和所述天线端口指示信息分别确定第二信号所占用的频域资源，以及所述频域资源所对应的天线端口编号；
    根据所述第二信号所占用的频域资源、所述频域资源所对应的天线端口编号以及第二信令，在所述第二时间单元内接收所述第二信号。
  5. 根据权利要求1至4任一项所述的方法，其特征在于，所述第一时间单元与所述第二时间单元分别包括一个或多个时隙、微时隙或符号。
  6. 根据权利要求1至4任一项所述的方法，其特征在于，所述第一时间单元与所述第二时间单元分别为一个时隙，且所述第一时间单元与所述第二时间单元在时间上没有重叠。
  7. 根据权利要求1至6任一项所述的方法，其特征在于，所述第一时间单元与所述第二时间单元对应同一个上下行切换周期。
  8. 一种通信方法，其特征在于，包括：
    网络设备向终端设备发送第一信令，所述第一信令用于指示终端设备在第一时间单元内接收第一信号，所述第一信令中包括与第一信号和第二信号所关联的第一信息的第一指示信息；
    所述网络设备在所述第一时间单元内发送所述第一信号；
    网络设备向终端设备发送第二信令，所述第二信令用于指示所述终端设备在所述第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的第一信息的指示信息；
    所述网络设备在所述第二时间单元向所述终端设备发送所述第二信号。
  9. 根据权利要求8所述的方法，其特征在于，在所述网络设备向所述终端设备发送所述第一信令之前，所述方法还包括：
    所述网络设备确定所述第一信号和所述第二信号所关联的第一信息相同。
  10. 根据权利要求8或9所述的方法，其特征在于，所述第一信息包括频域资源信息、调制和编码策略信息、天线端口信息、带宽部分信息中的至少一项。
  11. 根据权利要求8至10任一项所述的方法，其特征在于，所述第一时间单元与所述第 二时间单元分别包括一个或多个时隙、微时隙或符号。
  12. 根据权利要求8至10任一项所述的方法，其特征在于，所述第一时间单元与所述第二时间单元分别为一个时隙，且所述第一时间单元与所述第二时间单元在时间上没有重叠。
  13. 根据权利要求8至12任一项所述的方法，其特征在于，所述第一时间单元与所述第二时间单元对应同一个上下行切换周期。
  14. 一种通信装置，其特征在于，包括存储模块与收发模块，其中，
    所述存储模块，用于存储计算机程序或指令；
    所述收发模块，用于接收第一信令，所述第一信令指示所述接收模块在第一时间单元内接收第一信号，所述第一信令中包括与所述第一信号和第二信号关联的第一信息的第一指示信息；
    所述收发模块用于根据所述第一信令在所述第一时间单元内接收所述第一信号；
    所述收发模块用于接收第二信令，所述第二信令指示所述收发模块在第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的所述第一信息的指示信息；
    所述收发模块根据所述第一指示信息和所述第二信令在所述第二时间单元内接收所述第二信号。
  15. 根据权利要求14所述的装置，其特征在于，所述第一信息包括频域资源信息、调制和编码策略信息、天线端口信息或带宽部分信息中的至少一项。
  16. 根据权利要求14或15所述的装置，其特征在于，所述装置还包括：
    处理模块，用于根据所述第一指示信息确定与所述第二信号关联的所述第一信息；
    所述收发模块，用于根据所述第一信息和所述第二信令在所述第二时间单元内接收所述第二信号。
  17. 根据权利要求16所述的装置，其特征在于，
    所述处理模块，在所述第一信息的指示信息包括频域资源指示信息和天线端口指示信息时，具体用于根据所述频域资源指示信息和所述天线端口指示信息分别确定第二信号所占用的频域资源以及所述频域资源所对应的天线端口编号；
    所述收发模块具体用于根据所述第二信号所占用的频域资源、所述频域资源所对应的天线端口编号以及第二信令，在所述第二时间单元内接收所述第二信号。
  18. 根据权利要求14至17任一项所述的装置，其特征在于，所述第一时间单元与所述第二时间单元分别包括一个或多个时隙、微时隙或符号。
  19. 根据权利要求14至17任一项所述的装置，其特征在于，所述第一时间单元与所述第二时间单元分别为一个时隙，且所述第一时间单元与所述第二时间单元在时间上没有重叠。
  20. 根据权利要求14至19任一项所述的装置，其特征在于，所述第一时间单元与所述第二时间单元对应同一个上下行切换周期。
  21. 一种通信装置，其特征在于，包括存储模块与收发模块，其中，
    所述存储模块，用于存储计算机程序或指令；
    所述收发模块，用于向终端设备发送第一信令，所述第一信令用于指示终端设备在第一时间单元内接收第一信号，所述第一信令中包括与第一信号和第二信号所关联的第一信息的第一指示信息；
    所述收发模块，用于在所述第一时间单元内发送所述第一信号；
    所述收发模块，用于向终端设备发送第二信令，所述第二信令用于指示所述终端设备在所述第二时间单元内接收第二信号，所述第二信令不包括与所述第二信号关联的第一信息的指示信息；
    所述收发模块，用于在所述第二时间单元向所述终端设备发送所述第二信号。
  22. 根据权利要求21所述的装置，其特征在于，所述装置还包括：
    处理模块，用于确定所述第一信号和所述第二信号所关联的第一信息相同。
  23. 根据权利要求21或22所述的装置，其特征在于，所述第一信息包括频域资源信息、调制和编码策略信息、天线端口信息、带宽部分信息中的至少一项。
  24. 根据权利要求21至23任一项所述的装置，其特征在于，所述第一时间单元与所述第二时间单元分别包括一个或多个时隙、微时隙或符号。
  25. 根据权利要求21至23任一项所述的装置，其特征在于，所述第一时间单元与所述第二时间单元分别为一个时隙，且所述第一时间单元与所述第二时间单元在时间上没有重叠。
  26. 根据权利要求21至25任一项所述的装置，其特征在于，所述第一时间单元与所述第二时间单元对应同一个上下行切换周期。
  27. 一种通信装置，其特征在于，包括处理器和接口电路，所述接口电路用于接收来自所述通信装置之外的其它通信装置的信号并传输至所述处理器或将来自所述处理器的信号发送给所述通信装置之外的其它通信装置，所述处理器通过逻辑电路或执行代码指令用于实现如权利要求1至7或8至13中任一项所述的方法。
  28. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令被通信装置执行时，实现如权利要求1至7或8至13中任一项所述的方法。
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