WO2020088551A1 - 发送和接收数据的方法以及通信装置 - Google Patents

发送和接收数据的方法以及通信装置 Download PDF

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Publication number
WO2020088551A1
WO2020088551A1 PCT/CN2019/114492 CN2019114492W WO2020088551A1 WO 2020088551 A1 WO2020088551 A1 WO 2020088551A1 CN 2019114492 W CN2019114492 W CN 2019114492W WO 2020088551 A1 WO2020088551 A1 WO 2020088551A1
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WIPO (PCT)
Prior art keywords
pdcch
pdsch
resource
network device
data
Prior art date
Application number
PCT/CN2019/114492
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English (en)
French (fr)
Inventor
杭海存
葛士斌
王潇涵
纪刘榴
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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Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19879782.1A priority Critical patent/EP3863356A4/en
Publication of WO2020088551A1 publication Critical patent/WO2020088551A1/zh
Priority to US17/246,236 priority patent/US11956794B2/en

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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
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • 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
    • 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
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information

Definitions

  • the present application relates to the field of wireless communication, and more specifically, to a method of transmitting and receiving data and a communication device.
  • network devices such as transmission and reception points (TRP) can transmit downlink control information (DCI) in the physical downlink control channel (PDCCH) by transmitting downlink control information (DCI) in the physical downlink control channel (PHY)
  • DCI downlink control information
  • PHY physical downlink control channel
  • the terminal equipment schedules a physical downlink shared channel (PDSCH).
  • the terminal device may receive downlink data on the PDSCH scheduled by the network device.
  • the network equipment may be based on some emergency services, such as ultra-reliable low-latency communication (ultra reliable low latency communication, URLLC) services, through the PDCCH emergency scheduling PDSCH for the terminal equipment.
  • some emergency services such as ultra-reliable low-latency communication (ultra reliable low latency communication, URLLC) services
  • URLLC ultra-reliable low latency communication
  • Both the PDCCH and the PDSCH may conflict with the PDSCH resources scheduled previously, resulting in a decrease in the performance of the terminal device in receiving data.
  • the present application provides a method and a communication device for sending and receiving data in order to improve data transmission performance.
  • a method of receiving data is provided.
  • the method may be executed by the terminal device, or may also be executed by a chip configured in the terminal device, which is not limited in this application.
  • the method includes: receiving a first PDCCH for scheduling a first physical downlink shared channel PDSCH, the first PDSCH for transmitting first data; receiving a second PDCCH; based on the first PDCCH and the The second PDCCH determines a first resource for transmitting the first data, and the first resource is part or all of the resources of the first PDSCH; the first data is received on the first resource.
  • the terminal device may determine the first resource for transmitting the first data in combination with the first PDCCH and the second PDCCH when the first PDCCH and the second PDCCH are received. Since the resources scheduled by the first PDCCH and the second PDCCH are taken into account, the transmission resources of the first data can be reasonably determined to avoid possible resource conflicts, thereby helping to improve data transmission performance.
  • the present application provides a method for sending data.
  • the method may be executed by a network device, or may be executed by a chip configured in the network device, which is not limited in this application.
  • the method includes: sending a first physical downlink control channel PDCCH, where the first PDCCH is used to indicate scheduling of the first physical downlink shared channel PDSCH, and the first PDSCH is used to transmit first data; sending a second PDCCH; based on the The first PDCCH and the second PDCCH determine a first resource for transmitting the first data, and the first resource is part or all of the resources of the first PDSCH; the first data is sent on the first resource.
  • PDCCH physical downlink control channel
  • the first PDCCH is used to indicate scheduling of the first physical downlink shared channel PDSCH
  • the first PDSCH is used to transmit first data
  • sending a second PDCCH based on the The first PDCCH and the second PDCCH determine a first resource for transmitting the first data, and the first resource is part or all of the resources of the first PDSCH; the first data is sent on the first resource.
  • the network device may determine the first resource for transmitting the first data in combination with the first PDCCH and the second PDCCH. Due to taking into account the resources scheduled by the first PDCCH and the second PDCCH, the transmission resources of the first data can be reasonably determined, to avoid possible resource conflicts, and to avoid the interference that may be caused by using the same time-frequency resources to send different data. Therefore, it is beneficial to improve the data transmission performance.
  • the first A resource when resources overlap between the second PDCCH and the first PDSCH, includes: determining resources other than the second PDCCH in the first PDSCH scheduled by the first PDCCH as the first resource.
  • both the terminal device and the network device can remove the overlapping resources from the first PDSCH, and determine the remaining resources in the first PDSCH after removing the resources occupied by the second PDCCH as The first resource. Therefore, the interference of the data transmission on the first PDSCH on the second PDCCH can be avoided, and the correct reception and decoding of the second PDCCH can be ensured to avoid losing important signaling and data.
  • the second PDCCH is used to schedule the second PDSCH, and when resources overlap between the second PDSCH and the first PDSCH, based on the first PDCCH and the second
  • the PDCCH determining the first resource for transmitting the first data includes: determining resources other than the second PDSCH in the first PDSCH as the first resource.
  • both the terminal device and the network device can remove the overlapping resources from the first PDSCH, and determine the remaining resources in the first PDSCH after removing the resources occupied by the second PDSCH The first resource. Therefore, mutual interference between the first PDSCH and the second PDSCH can be avoided, and data transmission performance can be improved.
  • the second data transmitted by the second PDSCH may generally be data of emergency services, such as URLLC service data.
  • the second data transmitted by the second PDSCH may generally be data of emergency services, such as URLLC service data.
  • priority can be given to ensuring reliable transmission of emergency services.
  • the second PDCCH is used to schedule the second PDSCH.
  • resources overlap between the second PDCCH and the second PDSCH based on the first A PDSCH and a second PDCCH determining the first resource for transmitting the first data include: determining resources other than the second PDCCH and the second PDSCH in the first PDSCH scheduled by the first PDCCH as the first resource.
  • both the terminal device and the network device can remove the overlapping resources from the first PDSCH, after removing the resources occupied by the second PDCCH and the second PDSCH
  • the remaining resources in the first PDSCH are determined as the first resources. Therefore, mutual interference between the first PDSCH, the second PDCCH, and the second PDSCH can be avoided, and data transmission performance can be improved.
  • the second PDCC may generally be an emergency service, such as a URLLC service, and schedule physical downlink resources.
  • the second data transmitted by the second PDSCH may generally be emergency service data, such as URLLC service data.
  • the correct reception of the second PDCCH can be ensured, data loss of emergency services can be avoided, and second data can be transmitted through the second PDSCH So as to ensure the reliable transmission of emergency services.
  • the second PDCCH is used to schedule the second PDSCH, and neither the second PDCCH nor the second PDSCH overlaps the resource of the first PDSCH
  • determining the first resource for transmitting the first data based on the first PDSCH and the second PDCCH includes determining that the first PDSCH scheduled by the first PDCCH is the first resource.
  • the terminal device and the network device can still transmit according to the method of the prior art.
  • the terminal device may receive different data on the first PDSCH and the second PDSCH, respectively.
  • determining the first resource for transmitting the first data based on the first PDCCH and the second PDCCH includes: when the first PDCCH and the second PDCCH satisfy the preset condition Next, the first resource for transmitting the first data is determined according to the first PDSCH and the second PDCCH.
  • the first PDCCH and the second PDCCH may be scheduled based on different service types, respectively.
  • the first PDSCH scheduled by the first PDCCH may be used to transmit data of non-emergency services
  • the second PDSCH scheduled by the second PDCCH may be used to transmit data of emergency services. Therefore, the network device and the terminal device may determine the first resource based on the first PDCCH and the second PDCCH, respectively, to avoid the resource overlap between the first resource and the second PDCCH and / or the second PDSCH, resulting in incorrect reception of emergency service data or Lost, which can ensure the transmission reliability of emergency services.
  • the determining the first resource for transmitting the first data based on the first PDCCH and the second PDCCH includes: the first PDCCH and the second PDCCH If the preset condition is not satisfied, the first resource used to transmit the first data is determined according to the first PDCCH.
  • the first PDCCH and the second PDCCH may be scheduled based on the same service type, or may be based on different service types Scheduling. Since two network devices can use the space division multiplexing transmission mode to transmit different data, the terminal device can receive data from different network devices based on the method in the prior art.
  • the first PDSCH and the second PDCCH may overlap, or may not overlap; the first PDSCH and the second PDSCH may overlap, or may not overlap, which is not limited in this application.
  • the space division multiplexing transmission mode different data can be transmitted on the same time-frequency resource, so the utilization rate of spectrum resources can be improved, which is beneficial to improve the system performance.
  • the preset condition includes one or more of the following:
  • the PDCCH configuration of the first PDCCH is the same as the PDCCH configuration of the second PDCCH;
  • control resource set of the first PDCCH and the control resource set of the second PDCCH belong to the same control resource set
  • control resource set of the first PDCCH and the control resource set of the second PDCCH belong to the same control resource set group
  • the search space set of the first PDCCH and the search space set of the second PDCCH belong to the same search space set;
  • the search space set of the first PDCCH and the search space set of the second PDCCH belong to the same search space set group
  • the demodulation reference signal (DMRS) port indicated by the first PDCCH and the DMRS port indicated by the second PDCCH belong to the same DMRS port group (DMRS port group);
  • the first PDCCH and the second PDCCH are from the same cell
  • the first PDCCH and the second PDCCH are from the same cell group
  • Both the first PDCCH and the second PDCCH are the master PDCCH;
  • the receiving beam of the first PDSCH scheduled by the first PDCCH and the receiving beam of the second PDSCH scheduled by the second PDCCH are the same receiving beam group;
  • the receive beam of the first PDCCH and the receive beam of the second PDCCH are the same receive beam group;
  • the PDSCH configuration of the first PDSCH scheduled by the first PDCCH is the same as the PDSCH configuration of the second PDSCH scheduled by the second PDCCH.
  • the terminal device and the network device may determine whether the first resource needs to be re-determined based on the first PDCCH and the second PDCCH based on the same preset conditions.
  • the first PDCCH is located before the second PDCCH in the time domain.
  • the terminal device may determine the first PDCCH and the second PDCCH according to the time sequence of the received PDCCH.
  • the terminal device may determine the PDCCH received first as the first PDCCH, and may determine the PDCCH received later as the second PDCCH.
  • the mapping type of the time domain resource position of the first PDSCH is type A; the mapping of the time domain resource position of the second PDSCH scheduled by the second PDCCH Type is type B.
  • the terminal device may determine the first PDCCH and the second PDCCH according to the mapping type of the time domain resource position of the PDSCH indicated in the PDCCH.
  • the terminal device may determine the PDCCH corresponding to the PDSCH time domain resource position mapping type as the type A PDSCH as the first PDCCH, and may determine the PDSCH time domain resource position mapping type as the PDCCH corresponding to the type B PDSCH It is the second PDCCH.
  • Type A and Type B For the specific content of Type A and Type B, reference may be made to the prior art. For example, reference may be made to the related descriptions in NR protocols TS38.211 and TS38.214. For brevity, this article omits detailed descriptions of Type A and Type B.
  • the starting symbol of the downlink DMRS of the first PDSCH is the second or third symbol of the time slot where the first PDSCH is located; the second The starting symbol of the downlink DMRS of the second PDSCH scheduled by the PDCCH is the first symbol of the second PDSCH.
  • the terminal device may determine the first PDCCH and the second PDCCH according to the start symbol of the DMRS in the time domain.
  • the terminal device may determine the PDCCH corresponding to the PDSCH with the first symbol of the DMRS located in the second or third symbol of the time slot where the PDSCH is located as the first PDCCH, and may locate the starting symbol of the DMRS on the PDSCH of the first symbol of the PDSCH
  • the corresponding PDCCH is determined to be the second PDCCH.
  • the terminal device can determine which PDCCH is the first PDCCH and which PDCCH is the second PDCCH, and further can determine the first resource for transmitting the first data based on the first PDCCH and the second PDCCH.
  • the method further includes: determining the second PDSCH according to the second PDCCH; and receiving the second data on the second PDSCH.
  • the terminal device and the network device may transmit the second data based on the second PDSCH scheduled by the second PDCCH.
  • the second data may be data of emergency services. That is to say, this application can give priority to the normal transmission of emergency business data to ensure the reliability and low latency of emergency business transmission.
  • a communication device including various modules or units for performing the method in any possible implementation manner of the first aspect.
  • a communication device including a processor.
  • the processor is coupled to the memory, and can be used to execute instructions in the memory to implement the method in any possible implementation manner of the first aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication device is a terminal device.
  • the communication interface may be a transceiver or an input / output interface.
  • the communication device is a chip configured in the terminal device.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a communication device including various modules or units for performing the method in any possible implementation manner of the second aspect.
  • a communication device including a processor.
  • the processor is coupled to the memory and can be used to execute instructions in the memory to implement the method in any possible implementation manner of the second aspect.
  • the communication device further includes a memory.
  • the communication device further includes a communication interface, and the processor is coupled to the communication interface.
  • the communication device is a network device.
  • the communication interface may be a transceiver or an input / output interface.
  • the communication device is a chip configured in a network device.
  • the communication interface may be an input / output interface.
  • the transceiver may be a transceiver circuit.
  • the input / output interface may be an input / output circuit.
  • a processor including: an input circuit, an output circuit, and a processing circuit.
  • the processing circuit is configured to receive a signal through the input circuit and transmit a signal through the output circuit, so that the processor performs the first aspect or the second aspect and any possible implementation manner of the first aspect or the second aspect The method.
  • the processor may be a chip
  • the input circuit may be an input pin
  • the output circuit may be an output pin
  • the processing circuit may be a transistor, a gate circuit, a flip-flop, and various logic circuits.
  • the input signal received by the input circuit may be received and input by, for example, but not limited to a receiver
  • the signal output by the output circuit may be, for example but not limited to, output to and transmitted by the transmitter
  • the circuit may be the same circuit, which is used as an input circuit and an output circuit at different times, respectively.
  • the embodiments of the present application do not limit the specific implementation manners of the processor and various circuits.
  • a processing device including a processor and a memory.
  • the processor is used to read instructions stored in the memory, and can receive signals through the receiver and transmit signals through the transmitter to perform the first aspect or the second aspect and any possible implementation manner of the first aspect or the second aspect Methods.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory and the processor are provided separately.
  • the memory may be a non-transitory (non-transitory) memory, such as a read-only memory (read only memory, ROM), which may be integrated with the processor on the same chip, or may be separately set in different On the chip, the embodiments of the present application do not limit the type of memory and the manner of setting the memory and the processor.
  • a non-transitory memory such as a read-only memory (read only memory, ROM)
  • ROM read only memory
  • sending instruction information may be a process of outputting instruction information from the processor
  • receiving capability information may be a process of receiving input capability information by the processor.
  • the data output by the processor may be output to the transmitter, and the input data received by the processor may come from the receiver.
  • the transmitter and the receiver may be collectively referred to as a transceiver.
  • the processing device in the eighth aspect may be a chip, and the processor may be implemented by hardware or software.
  • the processor When implemented by hardware, the processor may be a logic circuit, an integrated circuit, etc .; when implemented by software
  • the processor may be a general-purpose processor, implemented by reading software codes stored in a memory, the memory may be integrated in the processor, or may be located outside the processor and exist independently.
  • a computer program product includes: a computer program (also referred to as code or instructions) that, when the computer program is executed, causes the computer to perform the first aspect or the above The method in the second aspect and any possible implementation manner of the first aspect or the second aspect.
  • a computer program also referred to as code or instructions
  • a computer-readable medium that stores a computer program (also may be referred to as code or instructions) that when executed on a computer, causes the computer to perform the first aspect or the above
  • a computer program also may be referred to as code or instructions
  • a communication system including the aforementioned network device and terminal device.
  • FIG. 1 is a schematic diagram of a communication system suitable for a method of sending and receiving data according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a method for sending and receiving data according to an embodiment of the present application
  • 3 to 5 are schematic diagrams of resource positions of the first PDSCH, the second PDCCH, and the second PDSCH provided by the embodiments of the present application;
  • FIG. 6 is a schematic block diagram of a communication device provided by an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a network device provided by an embodiment of the present application.
  • GSM global mobile communication
  • CDMA code division multiple access
  • WCDMA broadband code division multiple access
  • general packet radio service general packet radio service, GPRS
  • LTE long term evolution
  • LTE frequency division duplex FDD
  • TDD time division duplex
  • UMTS universal mobile communication system
  • WiMAX worldwide interoperability for microwave access
  • 5G fifth generation
  • 5G fifth generation
  • NR new radio
  • the network device in the communication system may be any device with a wireless transceiver function or a chip that can be installed in the device.
  • the device includes but is not limited to: evolved Node B (evolved Node B, eNB), wireless Network Controller (Radio Network Controller, RNC), Node B (Node B, NB), Base Station Controller (Base Station, Controller, BSC), Base Transceiver Station (Base Transceiver Station, BTS), Home Base Station (eg, Home evolved NodeB , Or Home Node B, HNB, Base Band Unit (BBU), Wireless Fidelity (WIFI) access point (Access Point, AP), wireless relay node, wireless backhaul node, Transmission point (transmission point, TP) or sending and receiving point (TRP), etc., can also be 5G, such as NR, gNB in the system, or, transmission point (TRP or TP), one or a group of base stations in 5G (Including multiple antenna panels)
  • An antenna panel or, may be a network
  • gNB may include a centralized unit (CU) and DU.
  • the gNB may also include a radio unit (RU).
  • CU implements some functions of gNB
  • DU implements some functions of gNB, for example, CU implements radio resource control (RRC), packet data convergence layer protocol (packet, data, protocol, PDCP) layer functions
  • DU implements wireless chain Road control (radio link control, RLC), media access control (media access control, MAC) and physical (physical, PHY) layer functions.
  • RRC radio resource control
  • RLC radio link control
  • media access control media access control
  • MAC media access control
  • PHY physical
  • the network device may be a CU node, or a DU node, or a device including a CU node and a DU node.
  • the CU can be divided into network devices in the access network RAN, and can also be divided into network devices in the core network CN, which is not limited herein.
  • terminal equipment in the communication system may also be called user equipment (user equipment (UE), access terminal, subscriber unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user Terminal, terminal, wireless communication device, user agent or user device.
  • UE user equipment
  • access terminal subscriber unit
  • subscriber unit user station
  • mobile station mobile station
  • remote station remote terminal
  • mobile device user Terminal
  • terminal wireless communication device
  • wireless communication device user agent or user device.
  • the terminal devices in the embodiments of the present application may be mobile phones, tablet computers, computers with wireless transceiver functions, virtual reality (Virtual Reality, VR) terminal devices, and augmented reality (Augmented Reality, AR) terminals Wireless terminals in equipment, industrial control (industrial control), wireless terminals in self-driving (self-driving), wireless terminals in remote medical (remote medical), wireless terminals in smart grid (smart grid), transportation safety ( Wireless terminals in transportation, wireless terminals in smart cities, wireless terminals in smart homes, etc.
  • the embodiments of the present application do not limit the application scenarios.
  • Control resource set (CORESET) and control resource set (CORESET) group The control resource set may be a resource set used to transmit downlink control information (downlink control information, DCI), and may also be called a control resource Region, or physical downlink control channel resource set.
  • DCI downlink control information
  • Each control resource set may be a set of resource element groups (resource element group, REG).
  • REG is a basic unit for downlink control signaling to allocate physical resources, and is used to define the mapping of downlink control signaling to resource elements (REs).
  • REs resource elements
  • one REG is composed of 4 REs with continuous non-reference signals (reference signals, RS) in the frequency domain.
  • RS reference signals
  • a control resource set can be understood as a set of resources that may be used for sending a PDCCH; for a terminal device, the resources corresponding to the search space of the PDCCH of each terminal device belong to the control resource set.
  • the network device may determine the resource used for sending the PDCCH from the control resource set, and the terminal device may determine the search space of the PDCCH according to the control resource set.
  • the control resource set may include time-frequency resources.
  • the frequency domain may be a section of bandwidth, or one or more subbands, etc .; the time domain may be one or more symbols; and the control resource set may be time-frequency domain. It is a continuous or discontinuous resource unit, for example, a continuous resource block (resource block (RB) or a discontinuous RB).
  • RB resource block
  • RB discontinuous RB
  • RB is an example of a resource unit
  • the size of RB may be a resource defined in the NR protocol or a resource defined in a future protocol, or it may be replaced with another name.
  • the control resource set may also be one or more time slots, radio frames, subframes, mini slots (mini slots or sub slots), or transmission time intervals (transmission time interval, TTI) in the time domain.
  • TTI transmission time interval
  • the control resource set may be configured by a control resource set information element (ControlResourceSet information) element in a high-level parameter, for example.
  • the high-level parameters may include, for example, an identifier (ID) of the control resource set, a frequency domain resource, and the number of symbols included in the duration (duration). This application does not limit the specific parameters used to configure the control resource set.
  • a control resource set group may include one or more control resource sets.
  • the control resource set included in the control resource set group can be configured by high-level parameters, for example, can be configured by PDCCH configuration information element (PDCCH-Config information), PDCCH-Config IE, or can be configured by ControlResourceSet information, element, This application does not limit this.
  • search space set and search space set group:
  • the search space set may be a set of search spaces described from the perspective of the physical layer.
  • search space set can also be called search space (search space (SS)).
  • search space search space (SS)
  • search space set in order to distinguish it from the search space described below, it is referred to as a search space set in the present application.
  • the network device can configure the search space set through high-level parameters, for example, through a search space information element (SearchSpace information element).
  • the high-level parameters may include, for example, the identifier of the search space set, the identifier of the control resource set, the period and offset of the monitoring slot, the monitoring symbol in the slot, and aggregation level (AL). This application does not limit the specific parameters for configuring the search space.
  • a search space set group may include one or more search space sets.
  • the search space set included in the search space set group can be configured by high-level parameters, for example, can be configured by PDCCH-Config information element, or can be configured by SearchSpace information element, which is not limited in this application.
  • the SearchSpace information element mentioned here is a high-level parameter.
  • the high-level parameter can be considered to be used to configure a set of search spaces.
  • the search space can be understood as a set of search spaces in the physical layer. For brevity, the description of the same or similar cases is omitted below.
  • Search space the search range of the blind detection of the terminal device, or the set of candidate downlink control channels that the terminal device needs to monitor.
  • the physical resources of the search space can be determined jointly by the set of control resources and the set of search spaces.
  • the control resource set may indicate the frequency domain position and duration of the search space
  • the search space set may indicate the starting position of the search space in the time domain, such as the starting time slot.
  • the terminal device may jointly determine the time-frequency resource of the blind detection PDCCH based on the control resource set and the search space set configured in the PDCCH configuration.
  • PDCCH configuration The network device can configure PDCCH parameters based on each bandwidth part (BWP) in each cell, for example, control resource set, control resource set group (CORESET) group, Search space set, search space set group (SS group) and other parameters that can be used for blind detection of PDCCH.
  • the PDCCH configuration may be configured through PDCCH-ConfigIE in the higher layer parameters, for example.
  • the PDCCH-Config IE may include, for example, a control resource set addition status list (controlResourceSetToAddModList) and a control resource set release list (controlResourceSetToReleaseList). Each list may include the identification of one or more control resource sets.
  • the PDCCH-Config IE may also include a search space addition status list (searchSpacesToAddModList) and a search space release list (searchSpacesToReleaseList), for example. Each list may include one or more search space identifiers.
  • each PDCCH configuration may also indicate one or more control resource set groups and / or one or more search space groups.
  • the control resource set increase status list in the PDCCH-Config IE may include one or more control resource set groups and the identifiers of the control resource sets contained in each control resource set group.
  • the search space increase list in the PDCCH-Config IE may include one or more search space groups and the search space identifiers included in each search space group.
  • One or more search spaces can be determined by PDCCH configuration.
  • the PDCCH configuration of the PDCCH can be understood as the PDCCH configuration on which the PDCCH is received, or in other words, the terminal device blindly detects the PDCCH in the search space determined by the PDCCH configuration;
  • the PDCCH configuration of the PDCCH can be understood as the PDCCH configuration on which the PDCCH is transmitted, or in other words, the network device transmits the PDCCH on a part of resources in the search space determined by the PDCCH configuration.
  • a cell can also be called a serving cell.
  • a cell can be understood as a high-level description from the perspective of resource management or mobility management or a service unit.
  • the coverage of each network device can be divided into one or more serving cells, and the serving cell can be regarded as consisting of a certain frequency domain resource.
  • the cell may be replaced with a serving cell or a component carrier (CC, or component carrier, component carrier, carrier, etc.).
  • CC component carrier
  • “cell”, “serving cell” and “CC” are used interchangeably. When the difference is not emphasized, the meaning to be expressed is the same.
  • the cell may be an area within the coverage of the wireless network of the network device.
  • different cells may correspond to different network devices.
  • the network device in cell # 1 and the network device in cell # 2 may be different network devices, such as base stations. That is to say, cell # 1 and cell # 2 can be managed by different base stations. In this case, it can be called that cell # 1 and cell # 2 are co-sited, or that they are co-sited.
  • the network device in cell # 1 and the network device in cell # 2 may also be different RF processing units of the same base station, for example, a radio remote unit (RRU), that is, cell # 1 and cell # 2 can be managed by the same base station, has the same baseband processing unit and intermediate frequency processing unit, but has different radio frequency processing units.
  • RRU radio remote unit
  • the terminal device may obtain the cell identity in advance.
  • the network device may indicate the cell identity for the terminal device through high-level signaling.
  • the terminal device may acquire the cell identity during downlink synchronization. This application does not limit the specific method for the terminal device to obtain the cell identity.
  • the cell group may also be called a serving cell group.
  • a cell group may be a collection of one or more cells.
  • the cells included in the cell group can be indicated by higher layer signaling.
  • the network device may indicate the cells included in each cell group to the terminal device through an RRC message.
  • the backhaul links that can be used between the network devices can be ideal backhaul.
  • Multiple network devices in the same cell group can cooperate with each other through a downlink control information (downlink control information, DCI) do scheduling.
  • DCI downlink control information
  • the backhaul links between the network devices in different cell groups may be non-ideal backhaul, and the network devices in different cell groups may be scheduled through the DCIs sent by them.
  • the terminal device may obtain the cell group information in advance. For example, the terminal device may determine in advance whether the cells with communication connections belong to the same cell group.
  • the network device may indicate the cells included in the cell group to the terminal device through high-level signaling. For example, the network device may indicate the cells included in the cell group to the terminal device through high-level signaling, such as an RRC message.
  • the beam can be embodied in the NR protocol as a spatial filter (spatial filter), or as a spatial filter or spatial parameters (spatial parameters).
  • the beam used to send a signal can be called a transmission beam (transmission beam, Tx beam), it can also be called a spatial transmission filter (spatial domain domain transmit filter) or a spatial transmission parameter (spatial domain domain transmit parameter); a beam used to receive a signal It may be called a reception beam (reception beam, Rx beam), or a spatial reception filter (spatial domain reception filter) or a spatial reception parameter (spatial domain reception parameter).
  • the transmit beam may refer to the signal intensity distribution formed in different directions in space after the signal is transmitted through the antenna
  • the receive beam may refer to the signal intensity distribution of the wireless signal received from the antenna in different directions in space.
  • Beam pairing relationship that is, the pairing relationship between the transmitting beam and the receiving beam, that is, the pairing relationship between the space transmitting filter and the space receiving filter.
  • a large beamforming gain can be obtained by transmitting a signal between a transmission beam and a reception beam having a beam pairing relationship.
  • the sending end eg, network device
  • the receiving end eg, terminal device
  • the sending end may send the reference signal by beam scanning
  • the receiving end may also receive the reference signal by beam scanning.
  • the transmitting end can form beams with different directivities in the space through beamforming, and can poll on multiple beams with different directivities to transmit the reference signal through the beams with different directivities, so that The power of the reference signal to transmit the reference signal in the direction pointed by the transmit beam can be maximized.
  • the receiving end can also form beams with different directivities in the space through beamforming, and can poll on multiple beams with different directivities to receive reference signals through beams with different directivities, so that the receiving end receives The power of the reference signal can be maximized in the direction pointed by the receive beam.
  • the receiving end can perform channel measurement based on the received reference signal, and report the measurement result to the sending end through channel state information (channel state information (CSI)).
  • channel state information channel state information
  • the receiving end may report a part of the reference signal resource with a larger reference signal receiving power (reference signal receiving power, RSRP) to the sending end, such as reporting the identifier of the reference signal resource, so that the sending end uses the channel when transmitting data or signaling Receive and send signals with better quality beam pairing.
  • RSRP reference signal receiving power
  • Transmission configuration indicator (TCI) status can be used to indicate the quasi-co-location (QCL) relationship between the two reference signals.
  • Each TCI state may include a serving cell index (ServeCellIndex), a bandwidth part (BWP) identifier (ID) and a reference signal resource identifier.
  • the reference signal resource identifier may be, for example, at least one of the following: non-zero power (NZP) CSI-RS reference signal resource identifier (NZP-CSI-RS-ResourceId), non-zero power CSI-RS reference signal Resource set identifier (NZP-CSI-RS-ResourceSetId) or SSB index (SSB-Index).
  • the serving cell index, BWP ID and reference signal resource identifier refer to the reference signal resource used in the beam training process and the corresponding serving cell and BWP.
  • the network device sends reference signals through different transmit beams based on different reference signal resources, so the reference signals sent through different transmit beams can be associated with different reference signal resources; the terminal device is based on different reference signal resources The reference signals are received through different receiving beams, so the reference signals received through different receiving beams can also be associated with different reference signal resources.
  • the terminal device can maintain the correspondence between the serving cell index, BWP ID, and reference signal resource identifier and the receiving beam, and the network device can maintain the serving cell index, BWP ID, and reference signal resource identifier, and the transmission beam. relationship.
  • the signal resource identifier By referring to the signal resource identifier, the pairing relationship between the receiving beam and the transmitting beam can be established.
  • the terminal device may determine the receive beam based on the TCI state indicated by the network device, and the network device may determine the transmit beam based on the same TCI state.
  • the network device may configure the TCI state list for the terminal device through high-level signaling (such as RRC messages).
  • the TCI state list may include multiple TCI states.
  • the network device can activate one or more TCI states through higher layer signaling (such as MAC CE).
  • the activated TCI state is a subset of the TCI state list configured in the RRC message.
  • the network device may also indicate a selected TCI state through the TCI field in physical layer signaling (such as DCI).
  • the DCI may be, for example, DCI scheduling physical downlink resources (such as PDSCH).
  • the PDSCH configuration Used to configure PDSCH parameters for terminal equipment.
  • the PDSCH parameters may include information such as scrambling code identification, DMRS mapping type, TCI status increase list, TCI status release list, and resource allocation.
  • serial numbers can be started from 0.
  • the 0th symbol in a certain time slot may refer to the first symbol of the time slot.
  • the specific implementation is not limited to this.
  • it may be consecutively numbered from 1.
  • the first symbol in a certain time slot may also refer to the first symbol of that time slot. Since the starting value of the number is different, the corresponding number of the same symbol in the time slot is also different.
  • the first, second, and various numerical numbers in the embodiments shown below are only for the convenience of description, and are not intended to limit the scope of the embodiments of the present application. For example, distinguish between different PDCCHs, different PDSCHs, and so on.
  • pre-acquisition may include signaling indication or pre-defined by the network device, for example, protocol definition.
  • pre-defined can be achieved by pre-storing corresponding codes, tables or other methods that can be used to indicate relevant information in the device (for example, including terminal devices and network devices), and this application does not do for its specific implementation limited.
  • "save” referred to in the embodiments of the present application may refer to being saved in one or more memories.
  • the one or more memories may be provided separately or integrated in an encoder or decoder, a processor, or a communication device.
  • the one or more memories may also be partly set separately and partly integrated in a decoder, processor, or communication device.
  • the type of memory may be any form of storage medium, which is not limited in this application.
  • the “protocol” involved in the embodiments of the present application may refer to a standard protocol in the communication field, and may include, for example, the LTE protocol, the NR protocol, and related protocols applied in future communication systems, which are not limited in this application.
  • At least one refers to one or more, and “multiple” refers to two or more.
  • And / or describes the relationship of the related objects, indicating that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, B exists alone, where A, B can be singular or plural.
  • the character “/” generally indicates that the related object is a "or” relationship.
  • At least one of the following” or a similar expression refers to any combination of these items, including any combination of a single item or a plurality of items.
  • At least one of a, b, and c can represent: a, or, b, or, c, or, a and b, or, a and c, or, b and c, or, a , B and c.
  • a, b, and c may be single or multiple, respectively.
  • FIG. 1 shows a schematic diagram of a communication system 100 suitable for a method for sending and receiving data according to an embodiment of the present application.
  • the communication system 100 may include at least one terminal device, such as the terminal device 101 shown in the figure; the communication system 100 may also include at least one network device, as shown in the network device # 1 102 or Network equipment # 2 103.
  • the communication system 100 may include multiple network devices, such as network device # 1 102 and network device # 2 103 shown in the figure.
  • the network device # 1 102 and the network device # 2 103 may be network devices in the same cell or network devices in different cells, which is not limited in this application.
  • the figure is only an example and shows an example in which network device # 1 102 and network device # 2 103 are located in the same cell.
  • the network device # 1 102 and the network device # 2 103 can communicate with each other through a backhaul link, which can be a wired backhaul link (eg, optical fiber, copper cable), or It is a wireless backhaul link (such as microwave).
  • the network device # 1 102 and the network device # 2 103 can cooperate with each other to provide services for the terminal device 101. Therefore, the terminal device 101 can communicate with the network device # 1 and the network device # 2 and 103 through a wireless link, respectively.
  • one or more of the network device # 1 102 and the network device # 2 103 may also use a carrier aggregation technology to schedule the PDSCH for the terminal device 101 on one or more CCs.
  • network device # 1 102 can schedule PDSCH for terminal device 101 on CC # 1 and CC # 2
  • network device # 2 103 can schedule PDSCH for terminal device 101 on CC # 1 and CC # 3.
  • the CCs scheduled by network device # 1 102 and network device # 2 103 may be the same or different, which is not limited in this application.
  • the communication delay between mutually coordinated network devices can be divided into ideal backhaul and non-ideal backhaul. Between the two sites under ideal backhaul, the communication delay can be in the microsecond level, which can be neglected compared to the millisecond level scheduling in NR; between the two sites under non-ideal backhaul, the communication delay can be in the millisecond level. Compared with the millisecond level scheduling in NR, it cannot be ignored.
  • a multi-site scheduling scheme based on multiple DCIs allows multiple network devices to schedule their respective PDSCHs for terminal devices through their respective DCIs for data transmission.
  • the PDSCHs can completely overlap or partially overlap in time and / or frequency domain resources. Or not overlap.
  • the UE independently demodulates its scheduled PDSCH according to the DCI sent by each network device; optionally, the UE separately acknowledges (acknowledgement, ACK) information / negative acknowledgement (negative acknowledgement) for the PDSCH sent by different network devices. NACK) information, feedback to the corresponding network device.
  • the UE can receive multiple cell radio network temporary identifiers (cell-radio network temporary identifiers, C-RNTI) and / or modulation coding (MCS) -C-RNTI scrambled PDCCHs, which can be scheduled separately PDSCHs that completely overlap, partially overlap, or not overlap in the time and / or frequency domain.
  • C-RNTI cell-radio network temporary identifiers
  • MCS modulation coding
  • the UE independently demodulates its corresponding PDSCH according to each PDCCH.
  • the UE separately feeds back ACK information / NACK information corresponding to its scheduled PDSCH.
  • this multi-site scheduling scheme based on multiple DCIs can also be called a multi-DCI scheduling scheme.
  • the network device # 1 102 of FIG. 1 may send PDCCH # 1 to the terminal device 101, and the PDCCH # 1 may carry DCI # 1, and the DCI # 1 may be used to schedule PDSCH # 1 for the terminal device 101.
  • the network device # 2 103 in FIG. 1 may also send PDCCH # 2 to the terminal device 101.
  • the PDCCH # 2 may carry DCI # 2, and the DCI # 2 may be used to schedule the PDSCH # 2 for the terminal device 101.
  • the PDSCH # 1 and PDSCH # 2 may or may not overlap in resources.
  • the network device # 1 102 and the network device # 2 103 can respectively send PDSCH to the terminal device through the space division multiplexing transmission mode.
  • network equipment such as network equipment # 1 102
  • the device schedules PDSCH.
  • the PDCCH may be referred to as PDCCH # 3, and the PDSCH may be referred to as PDSCH # 3, for example.
  • the PDCCH # 3 may overlap with the previously scheduled PDSCH # 1 of the network device # 1 102, and the PDSCH # 3 may also overlap with the previously scheduled PDSCH # 1 of the network device # 1.
  • the terminal may be interfered by the data transmitted on PDSCH # 1 when receiving PDCCH # 3 or PDSCH # 3, which may cause decoding failure of PDCCH # 3 or PDSCH # 3; Ground, PDCCH # 3 or PDSCH # 3 may also cause interference to the data transmitted on PDSCH # 1, causing PDSCH # 1 reception quality to degrade, or even decoding failure. Therefore, data transmission performance may be degraded and system performance may be degraded.
  • the present application provides a method for sending and receiving data in order to improve data transmission performance.
  • FIG. 2 is a schematic flowchart of a method 200 for sending and receiving data provided by an embodiment of the present application from the perspective of device interaction. As shown, the method 200 may include steps 210 to 260. The steps of the method 200 are described in detail below.
  • the method for sending and receiving data provided by the present application can be applied to a wireless communication system, for example, the communication system 100 shown in FIG. 1.
  • the communication devices in the communication system may have a wireless communication connection relationship.
  • the terminal device 101 shown in FIG. 1 may have a wireless communication connection relationship with the network device # 1 102 and the network device # 2 103, respectively.
  • the network device # 1 102 and the network device # 2 103 may be an ideal backhaul link or a non-ideal backhaul link, which is not limited in this application.
  • the network device # 1 102 and the network device # 2 103 are ideal backhaul links, it can be considered that the network device # 1 102 and the network device # 2 103 belong to the same network device group.
  • the network device # 1 102 and the network device # 2 103 are non-ideal backhaul links, it can be considered that the network device # 1 102 and the network device # 2 103 belong to different network device groups.
  • network devices in the same network device group can perform scheduling through one DCI, or a scheduling entity can be used for scheduling, or PDCCH can be sent based on the same PDCCH configuration.
  • the first network device shown below may correspond to, for example, network device # 1 102 in FIG. 1, and the second network device may correspond to, for example, network device # 2 103 in FIG. 1.
  • the following uses a first network device and a second network device as the same network device or different network devices as examples to describe in detail the method for sending and receiving data provided by the embodiments of the present application.
  • the first network device and the second network device are the same network device, which may be replaced by that the first network device and the second network device belong to the same network device group; the first network device and The second network device is a different network device, and it may be replaced with that the first network device and the second network device belong to different network device groups.
  • the terminal device receives a first PDCCH, which may be used to schedule the first PDSCH.
  • the PDCCH received by the terminal device in step 210 is recorded as the first PDCCH, and the PDSCH scheduled by the first PDCCH is recorded as the first PDSCH.
  • the first PDCCH may be, for example, a PDCCH sent by any one of the one or more network devices to the terminal device.
  • the network device transmitting the first PDCCH is referred to as a first network device, for example. That is, in step 210, the first network device sends the first PDCCH. That is, the first PDSCH is a physical downlink resource scheduled by the first network device for the terminal device through the first PDCCH.
  • DCI may be transmitted on the first PDCCH.
  • the DCI transmitted on the first PDCCH is recorded as the first DCI.
  • the first DCI may include information such as time-frequency resources, antenna ports, and PDSCH mapping types of the first PDSCH scheduled by the first DCI.
  • the first PDSCH can be used to transmit the first data.
  • the first data is data of services other than emergency services, or data of non-emergency services, or data with a lower transmission priority.
  • the first data is data of an enhanced mobile broadband (eMBB) service.
  • eMBB enhanced mobile broadband
  • step 220 the terminal device receives the second PDCCH.
  • the PDCCH received by the terminal device in step 220 is recorded as the second PDCCH, and the DCI transmitted on the second PDCCH is recorded as the second DCI.
  • the second PDCCH may be sent by the first network device mentioned above based on certain emergency services, such as URLLC service, to urgently schedule resources for the terminal device, or may be sent by another network device, such Second network equipment.
  • the network device is transparent.
  • the terminal device cannot know in advance which network device or devices send the PDCCH and PDSCH to it.
  • the network device that sends the second PDCCH to the terminal device in step 220 is denoted as the second network device. That is, in step 220, the second network device sends the second PDCCH.
  • the second network device and the first network device described above may be the same network device or different network devices; the first network device and the second network device may belong to the same network device group, and May belong to different network device groups.
  • the specific process for the terminal device to determine whether the first network device and the second network device are the same network device or belong to the same network device group based on the method provided in the embodiments of the present application will be described in detail later. Detailed description of the process.
  • first network device and the second network device are shown as two different network devices, which should not constitute any limitation to the present application.
  • the steps performed by the first network device and the second network device in the figure may be performed by the same network device, such as the first network device.
  • step 230 the terminal device determines the first resource for transmitting the first data based on the first PDCCH and the second PDCCH.
  • the terminal device may determine the first resource for transmitting the first data based on the first PDSCH scheduled by the first PDCCH and the second PDCCH.
  • the first resource belongs to the first PDSCH.
  • the first resource may be some resources or all resources in the first PDSCH.
  • the first network device may indicate the resource range for transmitting the first data to the terminal device through the first PDCCH, and the terminal device may further combine the second PDCCH to further determine the transmission of the first data from the resource range First resource.
  • the second PDCCH is used to schedule the second PDSCH.
  • the PDSCH scheduled by the second PDCCH is recorded as the second PDSCH.
  • the DCI in the second PDCCH may contain information such as the time-frequency resource, antenna port, and PDSCH mapping type of the scheduled second PDSCH.
  • FIGS. 3 to 5 are schematic diagrams of resource distribution of the second PDCCH, the first PDSCH, and the second PDSCH.
  • the figures shown are only for ease of understanding and should not constitute any limitation to this application.
  • step 230 specifically includes: the terminal device determines resources in the first PDSCH except the second PDCCH as the first resource.
  • all resources of the second PDCCH fall within the range of the first PDSCH. It should be understood that what is shown in FIG. 3 is only an example, and the size and overlapping position of the overlapping area between the second PDCCH and the first PDSCH are not limited in this application.
  • the resource overlap between the second PDCCH and the first PDSCH may specifically include: some resources of the second PDCCH overlap with the first PDSCH, or all resources of the second PDCCH overlap with the first PDSCH.
  • the second PDCCH may overlap resources at the starting position of the first PDSCH, may overlap resources at the end position of the first PDSCH, or may overlap resources at the middle position of the first PDSCH, or may also Resources overlap with all positions of the first PDSCH. This application does not limit this.
  • the terminal device may determine the resources in the first PDSCH except the second PDCCH as the first resources.
  • the terminal device may determine the first resource according to the resources indicated by the first PDCCH and occupied by the first PDSCH and the resources occupied by the second PDCCH.
  • the first data is received and demodulated on the first resource, and the second data on the second PDSCH can be received and demodulated according to the second PDCCH.
  • step 230 specifically includes: the terminal device determines resources other than the second PDSCH in the first PDSCH as the first resource.
  • all resources of the second PDSCH fall within the range of the first PDSCH. It should be understood that what is shown in FIG. 4 is only an example, and the size and overlapping position of the overlapping area between the second PDSCH and the first PDSCH are not limited in this application.
  • the resource overlap between the second PDSCH and the first PDSCH may specifically include: some resources of the second PDSCH overlap the first PDSCH, or all resources of the second PDSCH overlap the first PDSCH.
  • the second PDSCH may overlap the resource at the starting position of the first PDSCH, may overlap the resource at the end position of the first PDSCH, or may overlap the resource at the middle position of the first PDSCH, or may also overlap with Resource overlap occurs in all positions of the first PDSCH. This application does not limit this.
  • the terminal device may determine resources in the first PDSCH other than the second PDSCH as the first resource.
  • the terminal device determines that the second PDSCH arrives while receiving the first PDSCH, it can determine the first according to the resources occupied by the first PDSCH indicated by the first PDCCH and the resources occupied by the second PDSCH indicated by the second PDCCH A resource, and can receive and demodulate the first data on the determined first resource, and can receive and demodulate the second data on the second PDSCH according to the second PDCCH.
  • step 230 specifically includes: the terminal device determines the resources in the first PDSCH other than the second PDCCH and the second PDSCH as The first resource.
  • all resources of the second PDCCH and the second PDSCH fall within the range of the first PDSCH. It should be understood that what is shown in FIG. 5 is only an example, and the size and overlapping position of the overlapping area between the second PDCCH and the second PDSCH and the first PDSCH are not limited in this application.
  • the resources of the second PDCCH and the second PDSCH overlap with the first PDSCH which may specifically include: some resources of the second PDCCH overlap with the first PDSCH, and some resources of the second PDSCH overlap with the first PDSCH; or, the second PDCCH Of all resources overlap with the first PDSCH, and some resources of the second PDSCH overlap with the first PDSCH; or, some resources of the second PDCCH overlap with the first PDSCH, and all resources of the second PDSCH overlap with the first PDSCH; or , All resources of the second PDCCH overlap with the first PDSCH, and all resources of the second PDSCH overlap with the first PDSCH.
  • the second PDCCH may overlap with the starting position of the first PDSCH, and the second PDSCH may overlap with the middle position or the end position of the first PDSCH; or, the second PDCCH may overlap with the resource of the first PDSCH.
  • the second PDSCH may overlap the middle position or the end position of the first PDSCH, or the second PDCCH and the second PDSCH may also overlap resources in all positions of the first PDSCH. This application does not limit this.
  • the terminal device may determine resources in the first PDSCH other than the second PDCCH and the second PDSCH as the first resources.
  • the terminal device detects the second PDCCH and determines that the second PDSCH and the first PDSCH overlap in resources according to the second PDCCH. Then, the terminal device may determine the first resource according to the resources occupied by the first PDSCH indicated by the first PDCCH, the resources occupied by the second PDCCH, and the resources occupied by the second PDSCH indicated by the second PDCCH, and receive and Demodulate the first data. The terminal device may also receive and demodulate the second data on the resources occupied by the second PDSCH.
  • the terminal device may remove the part of the resource that overlaps with the second PDCCH and / or the second PDSCH in the first PDSCH.
  • Resources other than the second PDCCH and / or the second PDSCH in the first PDSCH may be used as the first resource. This may be understood as that the terminal device discards part of the resources in the first PDSCH that overlap with the second PDCCH and / or the second PDSCH, or that the terminal device discards part of the resources of the first PDSCH.
  • the unit may be time-frequency unit, for example, resource block (RB) as granularity, or time-domain unit, for example, with symbol as granularity .
  • RB resource block
  • the RB where the RE is located can be removed from the first PDSCH; for another example, when the first PDSCH and the second PDSCH overlap on a certain RE, Then, the physical resource on the symbol where the RE is located may be removed from the first PDSCH.
  • step 230 specifically includes: when neither the second PDCCH nor the second PDSCH overlaps the resources of the first PDSCH , Determine the first PDSCH scheduled by the first PDCCH as the first resource.
  • the first PDSCH may be directly determined according to the first PDCCH.
  • the first resource may be all resources of the first PDSCH.
  • step 240 the first network device determines the first resource for transmitting the first data.
  • the first network device may know in advance. In this case, the first network device may determine the first resource for transmitting the first data based on the method as described in step 230.
  • the first network device may remove the resource overlap from the first PDSCH Resources outside the area are determined as the first resource.
  • the resource overlapping region may be, for example, an overlapping region of the first PDSCH and the second PDCCH, an overlapping region of the first PDSCH and the second PDSCH, or an overlapping region of the first PDSCH and the second PDCCH and the second PDSCH. This application does not limit this.
  • the first network device may not send the first data in the resource overlapping area and preferentially send the second PDCCH and / or the second PDSCH.
  • the terminal device does not want any resource overlap between the first PDSCH and any one of the second PDCCH and / or the second PDSCH. Therefore, the first network device can avoid resource overlap between the first resource and any one of the second PDCCH and PDSCH when scheduling resources.
  • scheduling rules such as that the terminal device does not want the PDSCH scheduled by the PDCCH received earlier to be received later.
  • the terminal device does not want the start symbol position of the second PDSCH scheduled by the second PDCCH to be earlier than the end symbol position of the first PDSCH scheduled by the first PDCCH.
  • the terminal device does not want the start symbol position of the second PDSCH scheduled by the second PDCCH to be earlier than the start symbol position of the first PDSCH scheduled by the first PDCCH. That is, the terminal device expects to receive the first PDSCH before the second PDSCH.
  • the network device may perform scheduling of the first PDSCH and the second PDSCH based on the foregoing scheduling rule, so that the scheduled first PDSCH and second PDSCH can meet the requirements described above.
  • the first network device may also not know that there are other network devices serving the terminal device. In this case, the first network device can still directly transmit the first data through the first PDSCH according to the existing technology without re-determining the first resource for transmitting the first data.
  • step 250 the terminal device receives the first data on the first resource.
  • the first network device sends the first data on the first resource.
  • the terminal device does not want the first resource to overlap with any one of the second PDCCH and the second PDSCH. In other words, the terminal device does not want to receive the first data simultaneously on the second PDCCH or the second PDSCH.
  • the terminal device may not receive the first data in the resource overlapping area to ensure the successful reception of the second PDCCH and / or the second PDSCH.
  • step 260 the terminal device receives the second data on the second PDSCH.
  • step 260 the first network device sends second data on the second PDSCH; if the first network device and the second network device are different networks Device, then in step 260, the second network device sends second data on the second PDSCH.
  • the second data is data of emergency services.
  • the second data is data of the URLLC service.
  • the second data is data for emergency services, which is only one possibility, and should not constitute any limitation to this application.
  • the second data may also be data of non-emergency services, such as eMBB service data described above.
  • the first network device and the second network device are the same network device, when the data of the eMBB service scheduled by the PDSCH (such as the first PDSCH) to be transmitted last time is not completed by the first network device, usually No other PDSCH (such as the second PDSCH) will be scheduled to transmit data for new eMBB services.
  • the first data and the second data may also be data of different service types or data of the same service type, which is not limited in this application.
  • the first data is data of non-emergency services
  • the second data is data of emergency services.
  • the terminal device may preferentially receive the second data when receiving the scheduling of the emergency service, thereby ensuring the reliable transmission of the second data.
  • the terminal device preferentially receives the second PDCCH and / or the second PDSCH when the resources overlap between the first PDSCH and any one of the second PDCCH and the second PDSCH, that is, preferentially receives the second data. Therefore, the successful reception of data of emergency services can be ensured, thereby ensuring transmission reliability.
  • the first PDSCH and the second PDSCH may be from different network devices or different groups of network devices.
  • the first network device and the second network device may transmit different data through the space division multiplexing transmission mode.
  • the first PDSCH and the second PDSCH may be from different network devices or different groups of network devices.
  • the first network device and the second network device may transmit different data through the space division multiplexing transmission mode.
  • the terminal device may determine the first PDSCH according to the first PDCCH and receive the first data on the first PDSCH; the terminal device may also determine the second PDSCH according to the second PDCCH and receive on the second PDSCH Second data.
  • the terminal device may separately demodulate the received first data and second data.
  • the first PDSCH and the second PDSCH may also come from different network devices.
  • the first network device and the second network device may transmit the same data through the transmission mode of diversity transmission, that is, the first data and the second data may be the same data.
  • the first PDSCH and the second PDSCH may also come from different network devices, Or different network device groups.
  • the first network device and the second network device may transmit the same data through the transmission mode of diversity transmission.
  • the terminal device may determine the first PDSCH according to the first PDCCH and receive the first data on the first PDSCH; the terminal device may also determine the second PDSCH according to the second PDCCH and receive on the second PDSCH Second data.
  • the terminal device can jointly demodulate the received data.
  • the first PDSCH and the second PDSCH may also come from different network devices.
  • the terminal device may also determine the first resource for transmitting the first data according to the first PDCCH and the second PDCCH, respectively, and receive the first data on the first resource; the terminal device may determine the second PDSCH according to the second PDCCH, and The second data is received on the second PDSCH. The terminal device may separately demodulate the received first data and second data.
  • the terminal device may also determine the first PDSCH according to the first PDCCH and receive the first data on the first PDSCH; and may determine the second PDSCH according to the second PDCCH and receive the second data on the second PDSCH.
  • the terminal device may separately demodulate the received first data and second data.
  • the first PDSCH and the second PDSCH may be from the same network device, or from The same network device group can also come from different network devices in the same network device group, or from different network device groups.
  • the first PDSCH and the second PDSCH may be from the same network device, Either from the same network device group, or from different network devices, or from different network device groups.
  • the terminal device may determine the first resource for transmitting the first data according to the first PDCCH and the second PDCCH, and receive the first data on the first resource; the terminal device may determine the second resource according to the second PDCCH PDSCH, and receive the second data on the second PDSCH.
  • the terminal device may separately demodulate the received first data and second data.
  • the first network device and the second network device may send data to the terminal device by way of space division multiplexing, for example.
  • the terminal device can receive data through different receive beams. Therefore, when the first network device and the second network device are different network devices, the first network device and the second network device may respectively send downlink data to the terminal device.
  • the second data transmitted by the second network device may be non-emergency service data, such as eMBB service data; or emergency service data, such as URLLC service data, which is not limited in this application.
  • the second PDCCH and the second PDSCH are A PDSCH may overlap; when the first network device and the second network device are the same network device, or when the first network device and the second network device belong to the same network device group, the terminal device does not want the second PDCCH and the second Any one of the PDSCH and the first PDSCH overlap in resources.
  • step 230 further includes: when the first PDCCH and the second PDCCH satisfy the preset condition, the terminal device determines the first resource for transmitting the first data according to the first PDCCH and the second PDCCH.
  • step 230 further includes: when the first PDCCH and the second PDCCH do not satisfy the preset condition, the terminal device demodulates the first PDSCH according to the first PDCCH and the second PDSCH according to the second PDCCH.
  • the terminal device when the terminal device can determine by a preset condition, whether the first resource for transmitting the first data is the first PDSCH or the part of the first PDSCH excluding the second PDCCH and / or the second PDSCH.
  • the terminal device may receive the first data on the part of the resources after removing the resources overlapping with the second PDCCH and / or the second PDSCH in the first PDSCH, The second data is received on the PDSCH; when the first PDCCH and the second PDCCH do not satisfy the preset condition, the terminal device may receive the first data on the first PDSCH and the second data on the second PDSCH.
  • the terminal device When the terminal device removes the part of the first PDSCH that overlaps with the second PDCCH and / or the second PDSCH, it can be understood that the terminal device overlaps the part of the first PDSCH with the second PDCCH and / or the second PDSCH Resource discarding, or the terminal device discards part of the resources of the first PDSCH. Therefore, when the first PDCCH and the second PDCCH satisfy the preset condition, the terminal device may discard part of the resources of the first PDSCH to receive the second PDCCH and / or the second PDSCH on the discarded part of the resources; otherwise, the terminal device The first PDSCH and the second PDSCH can be independently received.
  • the preset condition may be used to determine whether the first network device and the second network device are the same network device or the same network device group.
  • the first network device and the second network device are non-ideal backhaul links
  • the first network device and the second network device can perform scheduling through their respective PDCCHs.
  • the terminal device determines that the first network device and the second network device are the same network device, it can be determined that the first PDCCH and the second PDCCH are from the same network device, that is, it can be determined that the first PDSCH and the second PDSCH are from the same network device .
  • the terminal device does not want the first resource to overlap with any one of the second PDCCH and the second PDSCH.
  • the terminal device may discard part of the resources in the first PDSCH in the manner described above in conjunction with step 230 and the drawings to receive the second PDCCH and / or the second PDSCH on the part of resources.
  • the terminal device determines that the first network device and the second network device are different network devices, it can be determined that the first PDCCH and the second PDCCH are from different network devices, that is, the first PDSCH and the second PDSCH can be determined from different networks device.
  • the terminal device may receive data from different network devices on the first PDSCH and the second PDSCH, respectively.
  • the first data transmitted on the first PDSCH and the second data transmitted on the second PDSCH may be independent of each other.
  • the terminal device may decode and demodulate the received first data and second data, respectively.
  • the first network device and the second network device may perform scheduling through one PDCCH.
  • the first network device and the second network device are different network devices, they can still meet the preset conditions listed below. Therefore, whether the first network device and the second network device described in the above embodiments are the same network device may be replaced with whether the first network device and the second network device are the same network device group.
  • first network device and the second network device are the same network device, and may be replaced with that the first network device and the second network device are from the same network device group.
  • first network device and the second network device are different network devices, and it may be replaced with that the first network device and the second network device are from different network device groups.
  • the preset condition may be used to determine whether the first network device and the second network device are from the same network device group.
  • a network device group may include one or network devices.
  • the network devices in the same network device group can be considered as ideal backhaul, so one or more network devices in the same network device group can be scheduled through a DCI, or a scheduling entity can be used for scheduling, or , PDCCH and so on can be sent based on the same PDCCH configuration.
  • Network devices in different network device groups can be considered as non-ideal backhaul. Therefore, network devices of different network device groups can perform scheduling through their respective PDCCHs.
  • the terminal device determines to use one or more preset conditions to determine whether to combine the first PDCCH and the second PDCCH to determine the first resource
  • the terminal device does not care whether the first PDCCH and the second PDCCH are from the same network device or Different network devices do not care whether the first PDCCH and the second PDCCH are from the same network device group or different network device groups.
  • the following describes in detail the terminal device determining whether the first PDCCH and the second PDCCH satisfy the preset condition.
  • the items listed below can be used alone or in combination of multiple items to determine whether the first resource needs to be re-determined based on the first PDCCH and the second PDCCH.
  • the agreement may predefine the preset condition.
  • the preset condition may be one item listed below, or may be a combination of multiple items listed below, or may be other conditions than those listed below, which is not limited in this application.
  • several possible preset conditions are exemplarily given, and should not constitute any limitation to this application.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition.
  • the first PDCCH and the second PDCCH may have the same PDCCH configuration, or in other words, the PDCCH configuration of the first PDCCH and the PDCCH configuration of the second PDCCH belong to the same PDCCH configuration.
  • the PDCCH configuration can be used to determine one or more search spaces.
  • the PDCCH configuration of the PDCCH can be understood as the PDCCH configuration on which the PDCCH is received, or the terminal device can blindly detect the PDCCH in the search space determined by the PDCCH configuration;
  • the PDCCH configuration may be understood as the PDCCH configuration on which the PDCCH is transmitted, or in other words, the network device may transmit the PDCCH on a part of resources in the search space determined by the PDCCH configuration.
  • the terminal device determines that the search space for blindly detecting the first PDCCH and the search space for blindly detecting the second PDCCH are based on the same PDCCH configuration, it may be considered that the PDCCH configuration of the first PDCCH and the PDCCH configuration of the second PDCCH are the same.
  • different network devices may send the PDCCH based on different PDCCH configurations.
  • each network device may correspond to a PDCCH configuration.
  • the first PDCCH and the second PDCCH may be sent based on the same PDCCH configuration; when the first network device and the second network device are different network devices, they may be based on Different PDCCH configurations send the first PDCCH and the second PDCCH.
  • the terminal device may determine that the first network device and the second network device are the same network device, or the first network device and the second network device belong to the same network device group. The terminal device may further determine the first resource according to the first PDCCH and the second PDCCH.
  • the terminal device may determine that the first network device and the second network device are different network devices, or the first network device and the second network device belong to different network device groups.
  • the terminal device may directly receive the first data on the first PDSCH scheduled by the first PDCCH.
  • the terminal device does not want to overlap transmission resources between PDSCHs scheduled by two PDCCHs transmitted based on the same PDCCH configuration.
  • the terminal device does not want resource overlap between the first PDSCH scheduled by the first PDCCH and the second PDSCH scheduled by the second PDCCH.
  • the first network device and the second network device belong to the same cell. That is, two or more PDCCH configurations may be configured in the same cell, and each PDCCH configuration may correspond to one network device.
  • first network device and the second network device may also be two network devices in different cells.
  • the above examples are only examples, and should not constitute any limitation to this application.
  • the corresponding relationship between the network device and the PDCCH configuration may be determined in advance through negotiation.
  • the network device may negotiate and configure the correspondence between the network device and the PDCCH configuration through the backhaul link. This application does not limit the correspondence between the network device and the PDCCH configuration and the configuration manner of the correspondence.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition.
  • the control resource set of the first PDCCH is the same as the control resource set of the second PDCCH.
  • the control resource set can be used to determine the search space of the PDCCH.
  • the control resource set of the PDCCH can be understood as the control resource set on which the PDCCH is received, or in other words, the terminal device can blindly detect the PDCCH in the search space determined by the control resource set; and for the network device
  • the control resource set of the PDCCH can be understood as the control resource set on which the PDCCH is transmitted, or that the network device can send the PDCCH on a part of resources in the search space determined by the control resource set.
  • the control resource set of the first PDCCH and the control resource of the second PDCCH may be considered The set is the same.
  • the terminal device may determine that the first network device and the second network device are the same network device, or the first network device and the second network device belong to the same network device group. The terminal device may further determine the first resource according to the first PDCCH and the second PDCCH.
  • the terminal device may determine that the first network device and the second network device are different network devices, or that the first network device and the second network device belong to different networks Device group.
  • the terminal device may directly receive the first data on the first PDSCH scheduled by the first PDCCH.
  • the first network device and the second network device belong to the same cell. That is, two or more control resource sets may be configured in the same cell, and each control resource set may correspond to a network device.
  • first network device and the second network device may also be two network devices in different cells.
  • the above examples are only examples, and should not constitute any limitation to this application.
  • the correspondence between the network device and the control resource set can be determined in advance through negotiation.
  • the correspondence between network devices and control resource sets can be negotiated and configured between network devices through backhaul links. This application does not limit the correspondence between the network device and the control resource set and the configuration method of the correspondence.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition.
  • the control resource set of the first PDCCH and the control resource set of the second PDCCH belong to the same resource set group.
  • Each network device may correspond to one or more control resource sets. That is, each network device may send the PDCCH based on the corresponding one or control resource set.
  • One or more control resource sets corresponding to the same network device may be defined as a control resource set group. That is, each network device may correspond to a set of control resources.
  • the terminal device may determine that the first network device and the second network device are the same network device, or the first network device and the second network device belong to the same network device group .
  • the terminal device may further determine the first resource according to the first PDCCH and the second PDCCH.
  • the terminal device may determine that the first network device and the second network device are different The network device, or the first network device and the second network device belong to different network device groups.
  • the terminal device may directly receive the first data on the first PDSCH scheduled by the first PDCCH.
  • the first network device and the second network device belong to the same cell. That is, two or more control resource set groups may be configured in the same cell, and each control resource set group may correspond to one network device.
  • first network device and the second network device may also be two network devices in different cells.
  • the above examples are only examples, and should not constitute any limitation to this application.
  • the corresponding relationship between the network device and the control resource set group can be determined in advance through negotiation.
  • network devices can negotiate and configure the corresponding relationship between network devices and control resource set groups through backhaul links. This application does not limit the correspondence between network devices and control resource set groups and the configuration method of the correspondence.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition.
  • the search space set of the first PDCCH is the same as the search space set of the second PDCCH.
  • the search space set may be a collection of search spaces.
  • a search space set may include one or more search spaces.
  • the search space set of the PDCCH can be understood as the search space set on which the PDCCH is received, or the terminal device can blindly detect the PDCCH in the search space included in the search space set;
  • the search space set of the PDCCH can be understood as the search space set on which the PDCCH is transmitted, or in other words, the network device can send the PDCCH on a certain search space included in the search space set.
  • the search space set of the first PDCCH and the search space of the second PDCCH may be considered The set is the same.
  • the specific method for the terminal device to determine whether the first PDCCH and the second PDCCH satisfy the preset condition has been described in detail above in conjunction with the control resource set.
  • the terminal device determines whether the first PDCCH and the second PDCCH satisfy the preset condition based on the search space set
  • the specific method is similar. For the sake of brevity, I won't repeat them here.
  • the correspondence between the network device and the search space set can be determined in advance through negotiation.
  • network devices can negotiate and configure the correspondence between network devices and search space sets through backhaul links. This application does not limit the correspondence between the network device and the search space set and the configuration method of the correspondence.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition.
  • the search space set of the first PDCCH and the search space set of the second PDCCH belong to the same search space set group.
  • Each network device can correspond to one or more search space sets. That is, each network device may send the PDCCH based on the corresponding one or search space set.
  • One or more search space sets corresponding to the same network device may be defined as a search space set group. That is, each network device may correspond to a search space set group.
  • the terminal device determines that the search space set to which the search space of the first PDCCH is blindly detected and the search space set to which the search space of the second PDCCH blindly belongs belongs to the same search space set group
  • the first PDCCH The search space set and the search space set of the second PDCCH belong to the same search space set group.
  • the specific method for the terminal device to determine whether the first PDCCH and the second PDCCH satisfy the preset condition has been described in detail above in conjunction with the control resource set group.
  • the terminal device determines whether the first PDCCH and the second PDCCH satisfy the preset condition based on the search space set group
  • the specific method of the condition is similar. For the sake of brevity, it will not be repeated here.
  • the corresponding relationship between the network device and the search space set group can be determined in advance through negotiation.
  • network devices can negotiate and configure the correspondence between network devices and search space set groups through backhaul links. This application does not limit the correspondence between the network device and the search space set and the configuration method of the correspondence.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition.
  • the terminal device may determine that the first PDCCH and the second PDCCH satisfy Preset conditions.
  • each network device When two or more network devices serve the same terminal device, if they use the same port, they may cause interference with each other; if the ports in the same port group are used, the channel estimation of the terminal device may be inaccurate, resulting in signals The reception quality is degraded.
  • the ports in different port groups are completely different, or there is no duplication among the ports in different port groups.
  • the ports included in each port group may be pre-defined, such as the protocol definition, or may be indicated by the network device, for example, the network device may notify the terminal device of the ports in each port group through high-level signaling.
  • the network device may indicate the scheduled DMRS port of the PDSCH in the PDCCH.
  • the terminal device may determine the port used to demodulate the DMRS of the first PDSCH according to the received first PDCCH, and may determine the port used to demodulate the DMRS of the second PDSCH according to the received second PDCCH.
  • the terminal device determines that the port of the DMRS indicated by the first PDCCH and the port of the DMRS indicated by the second PDCCH belong to the same DMRS port group, it may be determined that the first network device and the second network device are the same network device, or the first network device And the second network device are from the same network device group. The terminal device may further determine the first resource according to the first PDCCH and the second PDCCH.
  • the terminal device may determine that the first network device and the second network device are different network devices, or, One network device and the second network device belong to different network device groups.
  • the terminal device may directly receive the first data on the first PDSCH scheduled by the first PDCCH.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition.
  • the first PDCCH and the second PDCCH may be from the same cell; or in other words, the first network device transmitting the first PDCCH and the second PDCCH The second network device may be from the same cell.
  • serving cell configuration can be used to configure serving cells for terminal devices.
  • the serving cell configuration may include a set of bandwidth-specific downlink dedicated parameters (BWP downlink dedicated, BWP DL Dedicated).
  • BWP downlink dedicated parameter may include a PDCCH configuration. In other words, one cell may correspond to one PDCCH configuration.
  • the terminal device may determine whether the first network device and the second network device are from the same cell according to whether the PDCCH configuration based on the configuration is the same.
  • the two network devices in the same cell can be ideally backhauled. Therefore, if the terminal device determines that the first PDCCH and the second PDCCH are from the same cell, it may be determined that the first network device and the second network device are the same network device, or the first network device and the second network device belong to the same network device group .
  • the terminal device may further determine the first resource according to the first PDCCH and the second PDCCH.
  • the terminal device determines that the first PDCCH and the second PDCCH are from different cells, it may be determined that the first network device and the second network device are different network devices, or the first network device and the second network device belong to different Network device group.
  • the terminal device may directly receive the first data on the first PDSCH scheduled by the first PDCCH.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy preset conditions.
  • a cell group may include one or more cells. There can be ideal backhaul links between network devices in the same cell group. Therefore, when receiving the first PDCCH and the second PDCCH, the terminal device can determine the cell from which the PDCCH is based based on the received PDCCH configuration, and can further determine the cell from which the first PDCCH comes from and the Whether the cell belongs to the same cell group.
  • the terminal device determines that the first PDCCH and the second PDCCH are from the same cell group, it may be determined that the first network device and the second network device are the same network device, or the first network device and the second network device belong to the same network device group .
  • the terminal device may further determine the first resource according to the first PDCCH and the second PDCCH.
  • the terminal device determines that the first PDCCH and the second PDCCH are from different cell groups, it may determine that the first network device and the second network device are different network devices, or that the first network device and the second network device belong to different Network device group.
  • the terminal device may directly receive the first data on the first PDSCH scheduled by the first PDCCH.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition.
  • DCI can be divided into primary DCI and secondary DCI.
  • the PDCCH used to transmit the primary DCI may be referred to as the primary PDCCH.
  • the PDCCH used to transmit the secondary DCI may be referred to as a secondary PDCCH.
  • the information contained in the secondary DCI may be a subset of the information contained in the primary DCI.
  • the secondary DCI only includes an indication field included in part of the primary DCI, that is, the primary DCI contains more indication information than the secondary DCI.
  • the primary DCI and the secondary DCI may contain different information.
  • the primary DCI may be a DCI containing a certain item or items of specific parameters.
  • the specific parameter may include, for example, at least one of the following: carrier indicator (carrier indicator), partial bandwidth indicator (bandwidth indicator), rate matching indicator (rate matching indicator), and zero power channel state information reference signal trigger (zero power channelstate information reference trigger, ZP CSI-RS trigger); correspondingly, the secondary DCI may be a DCI that does not contain any of the above specific parameters.
  • the secondary DCI may include at least one of the following DCIs: resource allocation (resource) allocation, modulation coding scheme (MCS), redundancy version (redundancy version, RV), new data indicator (new data indicator (NDI) And a hybrid automatic repeat request (HARQ) process ID (HARQ process ID).
  • the protocol can predefine the specific content contained in the primary DCI and the secondary DCI.
  • the PDCCH may be considered as the main PDCCH.
  • emergency services are sent through the master station. That is, PDSCH transmission scheduled through the main PDCCH and PDSCH scheduled through the main PDCCH. Therefore, when the first PDCCH and the second PDCCH received by the terminal device are both the main PDCCH, it may be determined that the first PDCCH and the second PDCCH are from the same network device or the same network device group. And the second PDCCH is used for emergency service scheduling.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy the preset condition .
  • the reception beams of the terminal devices may be grouped, and the PDCCH and PDSCH from the same network device or the same network device group may be received through the reception beams in the same reception beam group.
  • the network device may carry the TCI in the DCI, and the selected TCI state is indicated by the TCI, and each TCI state may contain an identifier of the reference signal resource used to determine the receive beam for receiving the PDSCH.
  • the identification of the reference signal resource has a corresponding relationship with the reception beam. Therefore, in one implementation, grouping the received beams can also be achieved by grouping reference signal resources.
  • the network device may indicate multiple reference signal resource groups through signaling, and each reference signal resource group includes one or more reference signal resources.
  • the terminal device may determine the reception beam according to the identifier of the reference signal resource indicated in the TCI state, and receive the PDCCH from the network device through the reception beam corresponding to the reference signal resource.
  • the receiving beam used by the terminal device to receive the first PDCCH and the receiving beam used to receive the second PDCCH belong to the same receiving beam group
  • the reference contained in the TCI state indicated by the TCI in the first DCI transmitted by the first PDCCH The signal resource and the reference signal resource included in the TCI state indicated by the TCI in the second DCI transmitted by the second PDCCH also belong to the same reference signal resource group.
  • the first network device and the second network device may be considered to be the same network device, or the first network device and the second network device belong to the same network device group.
  • the receive beam used by the terminal device to receive the first PDCCH and the receive beam used to receive the second PDCCH belong to different receive beam groups
  • the reference signal resource and the The reference signal resources included in the TCI state indicated by the TCI in the second DCI belong to different reference signal resource groups.
  • it may be considered that the first network device and the second network device are different network devices, or the first network device and the second network device belong to different network device groups.
  • the receive beams in the same receive beam group can be configured on the same antenna panel. Therefore, in another implementation manner, an indication field may be added to the existing TCI state to distinguish different receive beam groups.
  • an indication field related to an antenna panel may be added in the TCI state, for example, "panel 1" indicates antenna panel 1, and "panel 2" indicates antenna panel 2.
  • the network device may indicate the available TCI status through TCI, and then indicate which antenna panel the terminal device uses to receive the PDSCH.
  • the first network device and the first The second network device is the same network device.
  • the antenna panel indicated in the TCI state indicated by the TCI in the first TCI and the antenna panel indicated in the TCI state indicated by the TCI in the second DCI are different antenna panels
  • the first network device and The second network device is a different network device.
  • the indication field related to the antenna panel is not limited to the above example, and the indication field related to the antenna panel is not limited in this application.
  • the different received beam groups are distinguished by referring to the signal resources and the antenna panel to determine whether the first PDCCH and the second PDCCH are from the same network device or the same network device group, only for determining the first network device and the second network device. 2. Whether a network device is a possible implementation manner of the same network device or the same network device group shall not constitute any limitation to this application. This application does not exclude the possibility of distinguishing different receive beam groups in other ways.
  • the reception beam of the first PDSCH scheduled by the first PDCCH and the reception beam of the second PDSCH scheduled by the second PDCCH are the same reception beam group can be regarded as "Beams are the same transmit beam group" is equivalent. Since the reference signal resource identifier has a relationship with the reception beam and a corresponding relationship with the transmission beam, when the reference signal resource identifier is fixed, the corresponding reception beam and transmission beam can also be determined. When the reference signal resource indicated by the reference signal resource identifier indicated in the TCI belongs to the same reference signal resource group, it can be considered that the corresponding transmit beam also belongs to the same transmit beam group. When the receive beams corresponding to the reference signal resource identifiers indicated in the TCI belong to the same receive beam group, the transmit beams corresponding to the reference signal resource identifiers indicated in the TCI also belong to the same transmit beam group.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy a preset condition.
  • the receiving beam group and the method for determining whether it is the same receiving beam group have been described in detail above. For brevity, I will not repeat them here.
  • the network device can activate a TCI state through a media access control (MAC) control element (control) element (CE).
  • the TCI state may include a reference signal resource identifier used to determine the receive beam used to receive the PDCCH.
  • the terminal device may determine the reception beam for receiving the PDCCH according to the TCI state activated in the MAC CE.
  • the first network device and the second network device may be considered to be the same network device, or the first network device and the second network device belong to the same network device group.
  • the reception beam of the first PDCCH and the reception beam of the second PDCCH are the same reception beam group can be considered to be equivalent to "the transmission beam of the first PDCCH and the transmission beam of the second PDCCH are the same transmission beam group” .
  • the corresponding relationship between the transmit beam group and the receive beam group has been described in detail above, and for the sake of brevity, no further description will be given here.
  • the terminal device determines that the first PDCCH and the second PDCCH satisfy preset conditions.
  • the network device may indicate the PDSCH configuration of the scheduled PDSCH in the DCI when scheduling the PDSCH through DCI.
  • the terminal device can determine the PDSCH configuration of the first PDSCH according to the first PDCCH, and can determine the PDSCH configuration of the second PDSCH according to the second PDCCH. If the PDSCH configuration of the first PDSCH is the same as the PDSCH configuration of the second PDSCH, it may be considered that the first PDCCH and the second PDCCH satisfy a preset condition.
  • the terminal device may re-determine the first resource according to the first PDCCH and the second PDCCH.
  • the terminal device may determine that the first PDCCH and the second PDCCH do not satisfy the preset condition.
  • the terminal device directly receives the first data scene on the first PDSCH scheduled by the first PDCCH.
  • the preset conditions are not limited to those listed above.
  • two or more items listed above may be used in combination.
  • the PDCCH configuration of the first PDCCH is the same as the PDCCH configuration of the second PDCCH and the first PDCCH
  • the received beams of the first PDSCH scheduled and the received beams of the second PDSCH scheduled by the second PDCCH are the same receive beam group, etc.
  • the preset conditions may also include other conditions. Based on the same concept, those skilled in the art may replace or deform the conditions listed above to obtain more possible conditions. These conditions shall fall within the scope of protection of this application.
  • the terminal device may determine to determine the first resource according to the first PDCCH and the second PDCCH in step 240.
  • the terminal device After receiving the first PDCCH and the second PDCCH, the terminal device cannot determine which PDCCH is the first PDCCH and which PDCCH is the second PDCCH. In this embodiment, the terminal device may determine the first PDCCH and the second PDCCH according to a preset rule, and then determine the first resource.
  • the first PDCCH is located before the second PDCCH in the time domain, or the start symbol of the first PDCCH is earlier than the start symbol of the second PDCCH.
  • the terminal device can determine which is the first PDCCH and which is the second PDCCH according to the time sequence of receiving the PDCCH, and then determine the first resource according to the first PDCCH and the second PDCCH.
  • the first PDCCH is located before the second PDCCH in the time domain, which may mean that the terminal device receives the first PDCCH before the second PDCCH.
  • mapping type of the time domain resource position of the first PDSCH is type A; the mapping type of the time domain resource position of the second PDSCH is type B.
  • the network device may indicate the mapping type of the time domain resource position of the scheduled PDSCH through the DCI in the PDCCH.
  • the mapping type may include type A and type B.
  • type A can be applied to services that have low reliability and latency requirements. For example, it can be applied to the non-emergency services described above, such as eMBB services; type B can be applied to reliability and delay The service with higher latency requirements can be applied to the emergency services mentioned above, such as the URLLC service.
  • Type A and Type B reference may be made to the prior art. For example, reference may be made to the related descriptions in NR protocols TS38.211 and TS38.214. For the sake of brevity, a detailed description of the specific mapping manners of type A and type B is omitted here.
  • the first PDSCH is used to transmit first data and the second PDSCH is used to transmit second data
  • the first data may be data of non-emergency services
  • the second data may be data of emergency services data
  • the terminal device may determine which PDCCH is the first PDCCH used for scheduling and transmitting the first data and which PDCCH is used for scheduling and transmitting the second data according to the mapping type of the time domain resource position of the PDSCH indicated in the received PDCCH The second PDCCH, and then determine the first resource according to the first PDCCH and the second PDCCH.
  • the starting symbol of the downlink DMRS of the first PDSCH is the second or third symbol of the time slot where the first PDSCH is located; the starting symbol of the downlink DMRS of the second PDSCH scheduled by the second PDCCH is the second The first symbol of PDSCH.
  • the mapping position of the downlink DMRS in the time domain is related to the mapping type of the PDSCH time domain resource location. For example, when the mapping type of the time domain resource position of the PDSCH is type A, the starting symbol of the downlink DMRS may be the second or third symbol of the time slot where the PDSCH is located; when the mapping type of the time domain resource position of the PDSCH When it is type B, the starting symbol of the downlink DMRS may be the first symbol of the PDSCH.
  • the terminal device can determine the mapping type of the time domain resource position of the PDSCH scheduled by the received PDCCH according to the time domain position of the DMRS indicated in the PDCCH, and thus can determine which PDCCH is used to schedule and transmit the first data
  • the first PDCCH, which PDCCH is the second PDCCH for scheduling and transmitting the second data so that the first resource is determined according to the first PDCCH and the second PDCCH.
  • the terminal device may determine the first PDCCH and the second PDCCH, and then determine the first resource according to the first PDCCH and the second PDCCH.
  • the method by which the terminal device determines the first PDCCH and the second PDCCH is not limited to the above, and for the sake of brevity, it will not be enumerated in this application. Based on the same idea, those skilled in the art may think of more possible implementations.
  • the embodiment of the present application determines the first resource for transmitting the first data based on the first PDCCH and the second PDCCH, the first PDSCH scheduled on the first PDCCH and the second scheduled on the second PDCCH or the second PDCCH
  • the second PDCCH is preferentially received, and the second data transmitted on the second PDSCH can be preferentially received according to the priority of the service type and the second data has a higher priority to ensure the first 2. Reliable transmission of data.
  • the terminal device overlaps resources on the first PDSCH and the second PDCCH, when the terminal device receives the first PDSCH and the second PDCCH, the first PDSCH and the second PDCCH may interfere with each other, resulting in reduced reception quality. , May even cause decoding failure. If the resources overlap between the first PDSCH and the second PDSCH, for the same reason, the reception quality of the first PDSCH and the second PDSCH deteriorates, and may even cause decoding failure. Therefore, the data transmission performance is degraded.
  • the terminal device may still be on the first PDSCH because it does not know in advance Receiving data, the terminal device still cannot successfully acquire the first PDSCH and the second PDSCH.
  • the terminal device may determine the first resource for transmitting the first data based on the first PDCCH and the second PDCCH, so as to remove resources overlapping the second PDCCH and / or the second PDSCH from the first
  • the removal of PDSCH can avoid the problem of data transmission quality degradation caused by mutual interference, ensure the reliability of emergency data, and help improve data transmission performance.
  • the terminal device can further determine whether the first PDSCH and the second PDSCH can be received at the same time according to a preset condition to make full use of resources, for example, different data can be transmitted through space division multiplexing and the like. Conducive to improving resource utilization and improving system performance.
  • the terminal device can receive more PDCCH and PDSCH.
  • the terminal device can still determine resources and receive data based on the method described above.
  • the application does not limit the number of PDCCHs and PDSCHs received by the terminal device, and the number of network devices serving the terminal device is not limited in the application.
  • the communication device 1000 may include a communication unit 1100 and a processing unit 1200.
  • the communication device 1000 may correspond to the terminal device in the foregoing method embodiment, for example, it may be a terminal device, or a chip configured in the terminal device.
  • the communication device 1000 may correspond to the terminal device in the method 200 according to an embodiment of the present application, and the communication device 1000 may include a unit for performing the method performed by the terminal device in the method 200 in FIG. 2.
  • each unit in the communication device 1000 and the other operations and / or functions described above are respectively to implement the corresponding flow of the method 200 in FIG. 2.
  • the communication unit 1100 can be used to perform steps 210, 220, 250 and 260 in the method 200, and the processing unit 1200 can be used to perform the method 200 Step 230.
  • the communication unit 1100 in the communication device 1000 may correspond to the transceiver 2020 in the terminal device 2000 shown in FIG. 7, and the processing unit 1200 in the communication device 1000 may This corresponds to the processor 2010 in the terminal device 2000 shown in FIG. 7.
  • the communication unit 1100 in the communication device 1000 may be an input / output interface.
  • the communication device 1000 may correspond to the network device in the foregoing method embodiment, for example, it may be a network device, or a chip configured in the network device.
  • the communication device 500 may correspond to the network device in the foregoing method embodiment, for example, it may be a network device, or a chip configured in the network device.
  • the communication device 1000 may correspond to the first network device in the method 200 according to an embodiment of the present application, and the communication device 1000 may include a unit for performing the method performed by the network device in the method 200 of FIG. 2.
  • each unit in the communication device 1000 and the other operations and / or functions described above are respectively to implement the corresponding flow of the method 200 in FIG. 2.
  • the communication unit 1100 may be used to perform steps 210 and 250 in the method 200, or may be used to perform steps 210, 220 and 220 in the method 200 240 and step 250, the processing unit 1200 may be used to perform step 240 in the method 200.
  • the communication unit in the communication device 1000 may correspond to the transceiver 3200 in the network device 3000 shown in FIG. 8, and the processing unit 1200 in the communication device 1000 may This corresponds to the processor 3100 in the network device 3000 shown in FIG. 8.
  • the communication unit 1100 in the communication device 1000 may be an input / output interface.
  • FIG. 7 is a schematic structural diagram of a terminal device 2000 provided by an embodiment of the present application.
  • the terminal device 2000 can be applied to the system shown in FIG. 1 to perform the functions of the terminal device in the above method embodiments.
  • the terminal device 2000 includes a processor 2010 and a transceiver 2020.
  • the terminal device 2000 further includes a memory 2030.
  • the processor 2010, the transceiver 2002 and the memory 2030 can communicate with each other through an internal connection channel to transfer control and / or data signals.
  • the memory 2030 is used to store a computer program, and the processor 2010 is used from the memory 2030 Call and run the computer program to control the transceiver 2020 to send and receive signals.
  • the terminal device 2000 may further include an antenna 2040 for sending uplink data or uplink control signaling output by the transceiver 2020 through a wireless signal.
  • the processor 2010 and the memory 2030 may be combined into a processing device.
  • the processor 2010 is used to execute the program code stored in the memory 2030 to implement the above functions.
  • the memory 2030 may also be integrated in the processor 2010 or independent of the processor 2010.
  • the processor 2010 may correspond to the processing unit in FIG. 6.
  • the above-mentioned transceiver 2020 may correspond to the communication unit in FIG. 6 and may also be referred to as a transceiver unit.
  • the transceiver 2020 may include a receiver (or receiver, receiving circuit) and a transmitter (or transmitter, transmitting circuit). Among them, the receiver is used to receive signals, and the transmitter is used to transmit signals.
  • the terminal device 2000 shown in FIG. 7 can implement various processes involving the terminal device in the method embodiment shown in FIG. 2.
  • the operations and / or functions of each module in the terminal device 2000 are respectively for implementing the corresponding processes in the above method embodiments.
  • the above-mentioned processor 2010 may be used to perform the actions described in the foregoing method embodiments that are internally implemented by the terminal device, and the transceiver 2020 may be used to perform the operations described in the foregoing method embodiments by the terminal device to or from the network device action.
  • the transceiver 2020 may be used to perform the operations described in the foregoing method embodiments by the terminal device to or from the network device action.
  • the above-mentioned terminal device 2000 may further include a power supply 2050 for providing power to various devices or circuits in the terminal device.
  • the terminal device 2000 may further include one or more of an input unit 2060, a display unit 2070, an audio circuit 2080, a camera 2090, a sensor 2100, etc.
  • the audio circuit It may also include a speaker 2082, a microphone 2084, and so on.
  • FIG. 8 is a schematic structural diagram of a network device provided by an embodiment of the present application, for example, may be a schematic structural diagram of a base station.
  • the base station 3000 can be applied to the system shown in FIG. 1 to perform the functions of the network device in the above method embodiments.
  • the base station 3000 may include one or more radio frequency units, such as a remote radio unit (RRU) 3100 and one or more baseband units (BBU) (also called digital units) , Digital, unit, DU) 3200.
  • the RRU 3100 may be referred to as a transceiver unit, which corresponds to the communication unit 1200 in FIG. 6.
  • the transceiver unit 3100 may also be called a transceiver, a transceiver circuit, or a transceiver, etc., which may include at least one antenna 3101 and a radio frequency unit 3102.
  • the transceiving unit 3100 may include a receiving unit and a transmitting unit, the receiving unit may correspond to a receiver (or receiver, receiving circuit), and the transmitting unit may correspond to a transmitter (or transmitter, transmitting circuit).
  • the RRU 3100 part is mainly used for the transmission and reception of radio frequency signals and the conversion of radio frequency signals and baseband signals, for example, for sending instruction information to terminal devices.
  • the BBU 3200 part is mainly used for baseband processing and control of the base station.
  • the RRU 3100 and the BBU 3200 may be physically arranged together, or may be physically separated, that is, distributed base stations.
  • the BBU 3200 is the control center of the base station, and may also be referred to as a processing unit. It may correspond to the processing unit 1100 in FIG.
  • the BBU processing unit
  • the BBU may be used to control the base station to perform the operation flow on the network device in the above method embodiment, for example, to generate the above instruction information.
  • the BBU 3200 may be composed of one or more boards, and multiple boards may jointly support a wireless access network (such as an LTE network) of a single access standard, or may support different access standards respectively. Wireless access network (such as LTE network, 5G network or other networks).
  • the BBU 3200 also includes a memory 3201 and a processor 3202.
  • the memory 3201 is used to store necessary instructions and data.
  • the processor 3202 is used to control the base station to perform necessary actions, for example, to control the base station to perform the operation flow on the network device in the foregoing method embodiment.
  • the memory 3201 and the processor 3202 may serve one or more single boards. In other words, the memory and the processor can be set separately on each board. It is also possible that multiple boards share the same memory and processor. In addition, each board can also be provided with necessary circuits.
  • the base station 3000 shown in FIG. 8 can implement various processes involving network devices in the method embodiment of FIG. 2.
  • the operations and / or functions of each module in the base station 3000 are respectively for implementing the corresponding processes in the above method embodiments.
  • the above-mentioned BBU 3200 can be used to perform the actions described in the foregoing method embodiments that are internally implemented by the network device, and the RRU 3100 can be used to perform the actions described in the previous method embodiments that the network device sends to or receives from the terminal device.
  • the RRU 3100 can be used to perform the actions described in the previous method embodiments that the network device sends to or receives from the terminal device.
  • An embodiment of the present application further provides a processing device, including a processor and an interface; the processor is used to perform the communication method in the foregoing method embodiment.
  • the above processing device may be a chip.
  • the processing device may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), or a system on chip (SoC), or It is a central processor (CPU), it can also be a network processor (NP), it can also be a digital signal processing circuit (digital signal processor, DSP), or a microcontroller (micro controller) , MCU), can also be a programmable controller (programmable logic device, PLD) or other integrated chips.
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • SoC system on chip
  • CPU central processor
  • NP network processor
  • DSP digital signal processor
  • microcontroller micro controller
  • MCU microcontroller
  • PLD programmable logic device
  • each step of the above method may be completed by an integrated logic circuit of hardware in the processor or instructions in the form of software.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware processor, or may be executed and completed by a combination of hardware and software modules in the processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware. In order to avoid repetition, they will not be described in detail here.
  • the processor in the embodiment of the present application may be an integrated circuit chip with signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components .
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory can be read-only memory (read-only memory, ROM), programmable read-only memory (programmable ROM, PROM), erasable programmable read-only memory (erasable PROM, EPROM), electronically Erasable programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (random access memory, RAM), which is used as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • synchronous RAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • double data SDRAM double data SDRAM
  • DDR SDRAM enhanced synchronous dynamic random access memory
  • ESDRAM synchronous connection dynamic random access memory
  • direct RAMbus RAM direct RAMbus RAM
  • the present application also provides a computer program product, the computer program product includes: computer program code, when the computer program code runs on the computer, the computer is caused to execute the embodiment shown in FIG. In any of the embodiments.
  • the present application also provides a computer-readable medium that stores program code, and when the program code runs on a computer, the computer is caused to execute the embodiment shown in FIG. 2 In any of the embodiments.
  • the present application further provides a system, which includes the foregoing one or more terminal devices and one or more network devices.
  • the computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on the computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmission to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a high-density digital video disc (digital video disc, DVD)), or a semiconductor medium (for example, a solid state disc, SSD)) etc.
  • a magnetic medium for example, a floppy disk, a hard disk, a magnetic tape
  • an optical medium for example, a high-density digital video disc (digital video disc, DVD)
  • a semiconductor medium for example, a solid state disc, SSD
  • the network device in each of the above device embodiments completely corresponds to the network device or terminal device in the terminal device and method embodiments, and the corresponding steps are performed by corresponding modules or units, for example, the communication unit (transceiver) performs The steps of sending, other than sending and receiving, can be executed by the processing unit (processor).
  • the function of the specific unit can refer to the corresponding method embodiment.
  • a component may be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer.
  • the application running on the computing device and the computing device can be components.
  • One or more components can reside in a process and / or thread of execution, and a component can be localized on one computer and / or distributed between 2 or more computers.
  • these components can execute from various computer readable media having various data structures stored thereon.
  • the component may, for example, be based on a signal having one or more data packets (eg, data from two components that interact with another component between the local system, the distributed system, and / or the network, such as the Internet that interacts with other systems through signals) Communicate through local and / or remote processes.
  • data packets eg, data from two components that interact with another component between the local system, the distributed system, and / or the network, such as the Internet that interacts with other systems through signals
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a division of logical functions.
  • there may be other divisions for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • each functional unit can be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software When implemented using software, it can be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions (programs). When the computer program instructions (programs) are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of the present application are generated.
  • the computer may be a general-purpose computer, a dedicated computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium or transferred from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be from a website site, computer, server or data center Transmit to another website, computer, server or data center via wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device including a server, a data center, and the like integrated with one or more available media.
  • the usable medium may be a magnetic medium (eg, floppy disk, hard disk, magnetic tape), optical medium (eg, DVD), or semiconductor medium (eg, solid state disk (SSD)), or the like.
  • the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, the computer software product is stored in a storage medium, including Several instructions are used to enable 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 the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请提供了一种发送和接收数据的方法，有利于提高数据传输性能。该方法包括：终端设备接收第一PDCCH和第二PDCCH，该第一PDCCH用于调度第一PDSCH，该第一PDSCH用于传输第一数据；并基于该第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源，该第一资源为第一PDSCH中的部分或全部资源；终端设备在该第一资源上接收来自网络设备的第一数据。通过结合第一PDCCH和第二PDCCH来确定第一资源，可以避免在第二PDCCH与第一PDSCH发生资源重叠的情况下，可能出现的第一PDSCH和第二PDCCH接收性能下降的问题，从而有利于提高数据传输性能。

Description

发送和接收数据的方法以及通信装置
本申请要求于2018年11月2日提交中国专利局、申请号为201811303221.0、申请名称为“发送和接收数据的方法以及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及无线通信领域，并且更具体地，涉及发送和接收数据的方法以及通信装置。
背景技术
在下行传输中，网络设备，如发送接收点(transmission and reception point，TRP)，可以通过传输在物理下行控制信道(physical downlink control channel，PDCCH)中的下行控制信息(downlink control information，DCI)为终端设备调度物理下行共享信道(physical downlink share channel，PDSCH)。终端设备可以在网络设备为其调度的PDSCH上接收下行数据。
然而，在某些情况下，网络设备可能会基于一些紧急业务，如，超可靠低延迟通信(ultra reliable low latency communication，URLLC)业务，通过PDCCH紧急地为终端设备调度PDSCH。此PDCCH和PDSCH都分别有可能与此前调度的PDSCH资源冲突，导致终端设备接收数据的性能下降。
发明内容
本申请提供一种发送和接收数据的方法以及通信装置，以期提高数据传输性能。
第一方面，提供了一种接收数据的方法。该方法可以由终端设备执行，或者也可以由配置于终端设备中的芯片执行，本申请对此不作限定。
具体地，该方法包括：接收第一PDCCH，该第一PDCCH用于调度第一物理下行共享信道PDSCH，该第一PDSCH用于传输第一数据；接收第二PDCCH；基于该第一PDCCH和该第二PDCCH确定用于传输该第一数据的第一资源，该第一资源为该第一PDSCH的部分或全部资源；在该第一资源上接收该第一数据。
因此，终端设备可以在接收到第一PDCCH和第二PDCCH的情况下，结合第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源。由于兼顾了第一PDCCH和第二PDCCH所调度的资源，可以合理地确定第一数据的传输资源，避免可能发生的资源冲突，从而有利于提高数据传输性能。
第二方面，本申请提供了一种发送数据的方法。该方法可以由网络设备执行，或者，也可以由配置于网络设备中的芯片执行，本申请对此不作限定。
具体地，该方法包括：发送第一物理下行控制信道PDCCH，该第一PDCCH用于指示调度第一物理下行共享信道PDSCH，该第一PDSCH用于传输第一数据；发送第二 PDCCH；基于该第一PDCCH和该第二PDCCH确定用于传输该第一数据的第一资源，该第一资源为该第一PDSCH的部分或全部资源；在该第一资源上发送该第一数据。
因此，网络设备可以在发送第一PDCCH和第二PDCCH的情况下，结合第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源。由于兼顾了第一PDCCH和第二PDCCH所调度的资源，可以合理地确定第一数据的传输资源，避免可能发生的资源冲突，避免使用相同的时频资源发送不同的数据可能带来的干扰，从而有利于提高数据传输性能。
结合第一方面或第二方面，在某些可能的实现方式中，在第二PDCCH与第一PDSCH发生资源重叠的情况下，基于第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源，包括：将第一PDCCH调度的第一PDSCH中除第二PDCCH之外的资源确定为第一资源。
当第二PDCCH与第一PDSCH发生资源重叠时，终端设备和网络设备均可以将重叠的资源从第一PDSCH中除去，将除去第二PDCCH所占的资源后第一PDSCH中剩余的资源确定为第一资源。因此，可以避免第一PDSCH上的数据传输对第二PDCCH的干扰，保证第二PDCCH的正确接收和解码，以避免丢失重要的信令和数据。
结合第一方面或第二方面，在某些可能的实现方式中，第二PDCCH用于调度第二PDSCH，在第二PDSCH与第一PDSCH发生资源重叠的情况下，基于第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源，包括：将第一PDSCH中除第二PDSCH之外的资源确定为第一资源。
当第二PDSCH与第一PDSCH发生资源重叠时，终端设备和网络设备均可以将重叠的资源从第一PDSCH中除去，将除去第二PDSCH所占的资源后第一PDSCH中剩余的资源确定为第一资源。因此，可以避免第一PDSCH和第二PDSCH之间的相互干扰，提高数据传输性能。
并且，当第一PDSCH和第二PDSCH来自同一网络设备或同一网络设备组时，该第二PDSCH所传输的第二数据通常可以为紧急业务的数据，如URLLC业务的数据。本实施例通过将第一PDSCH中与第二PDSCH重叠区域的资源丢弃，通过第二PDSCH传输第二数据，可以优先保证紧急业务的可靠传输。
结合第一方面或第二方面，在某些可能的实现方式中，第二PDCCH用于调度第二PDSCH，在第二PDCCH和第二PDSCH均与第一PDSCH发生资源重叠的情况下，基于第一PDSCH和第二PDCCH确定用于传输第一数据的第一资源，包括：将第一PDCCH调度的第一PDSCH中除第二PDCCH和第二PDSCH之外的资源确定为第一资源。
当第二PDCCH、第二PDSCH均与第一PDSCH发生资源重叠时，终端设备和网络设备均可以将重叠的资源从第一PDSCH中除去，将除去第二PDCCH和第二PDSCH所占的资源后第一PDSCH中剩余的资源确定为第一资源。因此，可以避免第一PDSCH与第二PDCCH、第二PDSCH之间的相互干扰，提高数据传输性能。
并且，当第一PDSCH或第二PDSCH来自同一网络设备或同一网络设备组时，该第二PDCC通常可以为紧急业务，如URLLC业务，调度物理下行资源。该第二PDSCH所传输的第二数据通常可以为紧急业务的数据，如URLLC业务的数据。本实施例通过将第一PDSCH中与第二PDCCH、第二PDSCH重叠区域的资源丢弃，可以保证第二PDCCH 的正确接收，避免紧急业务的数据丢失，并可以通过第二PDSCH传输第二数据，从而保证紧急业务的可靠传输。
结合第一方面或第二方面，在某些可能的实现方式中，第二PDCCH用于调度第二PDSCH，在该第二PDCCH和该第二PDSCH均未与该第一PDSCH发生资源重叠的情况下，该基于第一PDSCH和该第二PDCCH确定用于传输该第一数据的第一资源，包括：将该第一PDCCH调度的该第一PDSCH确定为该第一资源。
当第二PDCCH、第二PDSCH均未与第一PDSCH发生资源重叠时，终端设备和网络设备仍然可以按照现有技术的方法来传输。终端设备可以分别在第一PDSCH和第二PDSCH接收不同的数据。
结合第一方面，在某些可能的实现方式中，基于第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源，包括：在第一PDCCH与第二PDCCH满足预设条件的情况下，根据第一PDSCH与第二PDCCH确定用于传输第一数据的该第一资源。
当第一网络设备和第二网络设备为同一网络设备，或属于同一网络设备组时，该第一PDCCH和第二PDCCH可能是分别基于不同的业务类型而调度。例如，第一PDCCH调度的第一PDSCH可用于传输非紧急业务的数据，第二PDCCH调度的第二PDSCH可用于传输紧急业务的数据。因此，网络设备和终端设备可以分别基于第一PDCCH和第二PDCCH确定第一资源，以避免第一资源与第二PDCCH和/或第二PDSCH发生资源重叠而造成紧急业务的数据的错误接收或丢失，从而可以保证紧急业务的传输可靠性。
结合第一方面，在某些可能的实现方式中，该基于该第一PDCCH和该第二PDCCH确定用于传输该第一数据的第一资源，包括：在该第一PDCCH与该第二PDCCH不满足预设条件的情况下，根据该第一PDCCH确定用于传输该第一数据的该第一资源。
当第一网络设备和第二网络设备为不同的网络设备，或属于不同的网络设备组时，该第一PDCCH和第二PDCCH可能是基于相同的业务类型调度，也可能是基于不同的业务类型调度。由于两个网络设备之间可以采用空分复用的传输模式传输不同的数据，终端设备可以基于现有技术中的方法来接收来自不同网络设备的数据。该第一PDSCH和第二PDCCH可以重叠，也可以不重叠；该第一PDSCH和第二PDSCH可以重叠，也可以不重叠，本申请对此不作限定。通过采用空分复用的传输模式，可以在相同的时频资源上传输不同的数据，因此可以提高频谱资源的利用率，有利于提高系统性能。
结合第一方面，在某些可能的实现方式中，该预设条件包括以下一项或多项：
该第一PDCCH的PDCCH配置与该第二PDCCH的PDCCH配置相同；
该第一PDCCH的控制资源集和该第二PDCCH的控制资源集属于同一控制资源集；
该第一PDCCH的控制资源集和该第二PDCCH的控制资源集属于同一控制资源集组；
该第一PDCCH的搜索空间集与该第二PDCCH的搜索空间集属于同一搜索空间集；
该第一PDCCH的搜索空间集与该第二PDCCH的搜索空间集属于同一搜索空间集组；
该第一PDCCH指示的解调参考信号(Demodulation Reference Signal，DMRS)的端口和第二PDCCH指示的DMRS的端口属于同一DMRS端口组(DMRS port group)；
该第一PDCCH和该第二PDCCH来自同一小区；
该第一PDCCH和该第二PDCCH来自同一小区组；
该第一PDCCH和该第二PDCCH均为主PDCCH；
该第一PDCCH调度的该第一PDSCH的接收波束与该第二PDCCH调度的第二PDSCH的接收波束为同一接收波束组；
该第一PDCCH的接收波束与该第二PDCCH的接收波束为同一接收波束组；以及
该第一PDCCH调度的该第一PDSCH的PDSCH配置与该第二PDCCH调度的第二PDSCH的PDSCH配置相同。
应理解，上文列举的预设条件仅为示例，而不应对本申请构成任何限定。当协议定义一项或多项条件为预设条件时，终端设备和网络设备可以基于相同的预设条件来确定是否需要根据第一PDCCH和第二PDCCH来重新确定第一资源。
结合第一方面或第二方面，在某些可能的实现方式中，该第一PDCCH在时域上位于该第二PDCCH之前。
即，终端设备可以根据接收到的PDCCH的时间先后顺序确定第一PDCCH和第二PDCCH。终端设备可以将先接收到的PDCCH确定为第一PDCCH，并可以将后接收到的PDCCH确定为第二PDCCH。
结合第一方面或第二方面，在某些可能的实现方式中，该第一PDSCH的时域资源位置的映射类型为类型A；该第二PDCCH调度的第二PDSCH的时域资源位置的映射类型为类型B。
即，终端设备可以根据PDCCH中指示的PDSCH的时域资源位置的映射类型来确定第一PDCCH和第二PDCCH。终端设备可以将PDSCH的时域资源位置的映射类型为类型A的PDSCH所对应的PDCCH确定为第一PDCCH，并可以将PDSCH的时域资源位置的映射类型为类型B的PDSCH所对应的PDCCH确定为第二PDCCH。
有关类型A和类型B的具体内容可以参考现有技术，例如，可以参考NR协议TS38.211和TS38.214中的相关描述。为了简洁，本文省略对类型A和类型B的详细说明。
结合第一方面或第二方面，在某些可能的实现方式中，该第一PDSCH的下行DMRS的起始符号为该第一PDSCH所在时隙的第2个或第3个符号；该第二PDCCH调度的第二PDSCH的下行DMRS的起始符号为该第二PDSCH的首个符号。
即，终端设备可以根据DMRS在时域上的起始符号确定第一PDCCH和第二PDCCH。终端设备可以将DMRS的起始符号位于PDSCH所在时隙的第2个或第3个符号的PDSCH对应的PDCCH确定为第一PDCCH，并可以将DMRS的起始符号位于PDSCH的首个符号的PDSCH对应的PDCCH确定为第二PDCCH。
基于上文列举的方法，终端设备可以确定哪个PDCCH为第一PDCCH，哪个PDCCH为第二PDCCH，进而可以基于第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源。
结合第一方面，在某些可能的实现方式中，该方法还包括：根据第二PDCCH确定第二PDSCH；在该第二PDSCH上接收第二数据。
终端设备和网络设备可以基于第二PDCCH调度的第二PDSCH传输第二数据。该第二数据可以是紧急业务的数据。也就是说，本申请可以优先保证紧急业务数据的正常传输，以保证紧急业务的传输的可靠性和低时延。
第三方面，提供了一种通信装置，包括用于执行第一方面中任一种可能实现方式中的方法的各个模块或单元。
第四方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第一方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为终端设备。当该通信装置为终端设备时，所述通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于终端设备中的芯片。当该通信装置为配置于终端设备中的芯片时，所述通信接口可以是输入/输出接口。
可选地，所述收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
第五方面，提供了一种通信装置，包括用于执行第二方面中任一种可能实现方式中的方法的各个模块或单元。
第六方面，提供了一种通信装置，包括处理器。该处理器与存储器耦合，可用于执行存储器中的指令，以实现上述第二方面中任一种可能实现方式中的方法。可选地，该通信装置还包括存储器。可选地，该通信装置还包括通信接口，处理器与通信接口耦合。
在一种实现方式中，该通信装置为网络设备。当该通信装置为网络设备时，所述通信接口可以是收发器，或，输入/输出接口。
在另一种实现方式中，该通信装置为配置于网络设备中的芯片。当该通信装置为配置于网络设备中的芯片时，所述通信接口可以是输入/输出接口。
可选地，所述收发器可以为收发电路。可选地，所述输入/输出接口可以为输入/输出电路。
第七方面，提供了一种处理器，包括：输入电路、输出电路和处理电路。所述处理电路用于通过所述输入电路接收信号，并通过所述输出电路发射信号，使得所述处理器执行第一方面或第二方面以及第一方面或第二方面任一种可能实现方式中的方法。
在具体实现过程中，上述处理器可以为芯片，输入电路可以为输入管脚，输出电路可以为输出管脚，处理电路可以为晶体管、门电路、触发器和各种逻辑电路等。输入电路所接收的输入的信号可以是由例如但不限于接收器接收并输入的，输出电路所输出的信号可以是例如但不限于输出给发射器并由发射器发射的，且输入电路和输出电路可以是同一电路，该电路在不同的时刻分别用作输入电路和输出电路。本申请实施例对处理器及各种电路的具体实现方式不做限定。
第八方面，提供了一种处理装置，包括处理器和存储器。该处理器用于读取存储器中存储的指令，并可通过接收器接收信号，通过发射器发射信号，以执行第一方面或第二方面以及第一方面或第二方面任一种可能实现方式中的方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
在具体实现过程中，存储器可以为非瞬时性(non-transitory)存储器，例如只读存储器(read only memory，ROM)，其可以与处理器集成在同一块芯片上，也可以分别设置在不同的芯片上，本申请实施例对存储器的类型以及存储器与处理器的设置方式不做限定。
应理解，相关的数据交互过程例如发送指示信息可以为从处理器输出指示信息的过程，接收能力信息可以为处理器接收输入能力信息的过程。具体地，处理器输出的数据可以输出给发射器，处理器接收的输入数据可以来自接收器。其中，发射器和接收器可以统称为收发器。
上述第八方面中的处理装置可以是一个芯片，该处理器可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，该处理器可以是逻辑电路、集成电路等；当通过软件来实现时，该处理器可以是一个通用处理器，通过读取存储器中存储的软件代码来实现，该存储器可以集成在处理器中，可以位于该处理器之外，独立存在。
第九方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述第一方面或第二方面以及第一方面或第二方面中任一种可能实现方式中的方法。
第十方面，提供了一种计算机可读介质，所述计算机可读介质存储有计算机程序(也可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面或第二方面以及第一方面或第二方面中任一种可能实现方式中的方法。
第十一方面，提供了一种通信系统，包括前述的网络设备和终端设备。
附图说明
图1是适用于本申请实施例的发送和接收数据的方法的通信系统的示意图；
图2是本申请实施例提供的发送和接收数据的方法的示意性流程图；
图3至5是本申请实施例提供的第一PDSCH、第二PDCCH和第二PDSCH的资源位置的示意图；
图6是本申请实施例提供的通信装置的示意性框图；
图7是本申请实施例提供的终端设备的结构示意图；
图8是本申请实施例提供的网络设备的结构示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信系统，例如：全球移动通信(global system for mobile communications，GSM)系统、码分多址(code division multiple access，CDMA)系统、宽带码分多址(wideband code division multiple access，WCDMA)系统、通用分组无线业务(general packet radio service，GPRS)、长期演进(long term evolution，LTE)系统、LTE频分双工(frequency division duplex，FDD)系统、LTE时分双工(time division duplex，TDD)、通用移动通信系统(universal mobile telecommunication system，UMTS)、全球互联微波接入(worldwide interoperability for microwave access，WiMAX)通信系统、第五代(5th generation，5G)系统或新无线(new radio，NR)等。
应理解，该通信系统中的网络设备可以是任意一种具有无线收发功能的设备或可设置于该设备的芯片，该设备包括但不限于：演进型节点B(evolved Node B，eNB)、无线网络控制器(Radio Network Controller，RNC)、节点B(Node B，NB)、基站控制器(Base Station Controller，BSC)、基站收发台(Base Transceiver Station，BTS)、家庭基站(例 如，Home evolved NodeB，或Home Node B，HNB)、基带单元(BaseBand Unit，BBU)，无线保真(Wireless Fidelity，WIFI)系统中的接入点(Access Point，AP)、无线中继节点、无线回传节点、传输点(transmission point，TP)或者发送接收点(TRP)等，还可以为5G，如NR，系统中的gNB，或，传输点(TRP或TP)，5G系统中的基站的一个或一组(包括多个天线面板)天线面板，或者，还可以为构成gNB或传输点的网络节点，如基带单元(BBU)，或，分布式单元(distributed unit，DU)等。
在一些部署中，gNB可以包括集中式单元(centralized unit，CU)和DU。gNB还可以包括射频单元(radio unit，RU)。CU实现gNB的部分功能，DU实现gNB的部分功能，比如，CU实现无线资源控制(radio resource control，RRC)，分组数据汇聚层协议(packet data convergence protocol，PDCP)层的功能，DU实现无线链路控制(radio link control，RLC)、媒体接入控制(media access control，MAC)和物理(physical，PHY)层的功能。由于RRC层的信息最终会变成PHY层的信息，或者，由PHY层的信息转变而来，因而，在这种架构下，高层信令，如RRC层信令或PHCP层信令，也可以认为是由DU发送的，或者，由DU+RU发送的。可以理解的是，网络设备可以为CU节点、或DU节点、或包括CU节点和DU节点的设备。此外，CU可以划分为接入网RAN中的网络设备，也可以将CU划分为核心网CN中的网络设备，在此不做限制。
还应理解，该通信系统中的终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。本申请的实施例中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。
为便于理解本申请实施例，首先对本申请中涉及的几个术语做简单说明。
1、控制资源集(control resource set，CORESET)和控制资源集组(CORESET group)：控制资源集可以是用于传输下行控制信息(downlink control information，DCI)的资源集合，也可以称为控制资源区域，或物理下行控制信道资源集合。
每个控制资源集可以是一组资源元素组(resource element group，REG)的集合。REG是下行控制信令进行物理资源分配的基本单位，用于定义下行控制信令到资源元素(resource element，RE)的映射。例如，在LTE协议中规定，一个REG由4个频域上连续的非参考信号(reference signal，RS)的RE组成。应理解，REG仅为用于资源分配的单位，不应对本申请构成任何限定，本申请并不排除在未来的协议中定义新的资源分配单位来实现相同或相似的功能。
对于网络设备而言，控制资源集可以理解为发送PDCCH所可能使用的资源的集合；对于终端设备而言，每个终端设备的PDCCH的搜索空间所对应的资源都属于该控制资源集。或者说，网络设备可以从该控制资源集中确定发送PDCCH使用的资源，终端设备可以根据该控制资源集确定PDCCH的搜索空间。
其中，控制资源集可以包括时频资源，例如，频域上可以是一段带宽，或者一个或者多个子带等；时域上可以是一个或多个符号；一个控制资源集在时频域上可以是连续或不连续的资源单元，例如，连续的资源块(resource block，RB)或者不连续的RB。
应理解，上述列举的频域资源、时域资源、时频域资源的具体内容仅为示例性说明，而不应对本申请构成任何限定。例如，RB是资源单元的一例，RB的大小可以为NR协议中定义的资源，也可以为未来协议中定义的资源，或者，还可以使用其他的命名来替代。又例如，控制资源集在时域上还可以是一个或多个时隙、无线帧、子帧、微时隙(mini slot或sub slot)、或者传输时间间隔(transmission time interval，TTI)，本申请实施例对此并未特别限定。
控制资源集例如可以通过高层参数中的控制资源集信息元素(ControlResourceSet information element)配置。该高层参数中例如可以包括控制资源集的标识(identifier，ID)、频域资源、持续时间(duration)所包含的符号个数等。本申请对用于配置控制资源集的具体参数不作限定。
此外，本申请实施例提出了控制资源集组的概念。一个控制资源集组可以包括一个或多个控制资源集。控制资源集组中包含的控制资源集例如可以通过高层参数来配置，例如，可以通过PDCCH配置信息元素(PDCCH-Config information element，PDCCH-Config IE)来配置，也可以通过ControlResourceSet information element来配置，本申请对此不作限定。
2、搜索空间集(search space set)和搜索空间集组：搜索空间集可以是从物理层的角度来描述的搜索空间的集合。对于高层来说，该搜索空间集也可以称为搜索空间(search space，SS)。在本申请实施例中，为便于与下文所述的搜索空间相区分，在本申请中将其称为搜索空间集。
网络设备可以通过高层参数来配置搜索空间集，例如，可以通过搜索空间信息元素(SearchSpace information element)来配置。该高层参数中例如可以包括搜索空间集的标识、控制资源集的标识、监测时隙周期及偏移量、时隙中的监测符号以及聚合等级(aggregation level，AL)等。本申请对于配置搜索空间的具体参数不作限定。
此外，本申请实施例提出了搜索空间集组的概念。一个搜索空间集组可以包括一个或多个搜索空间集。搜索空间集组中包含的搜索空间集例如可以通过高层参数来配置，例如，可以通过PDCCH-Config information element来配置，也可以通过SearchSpace information element来配置，本申请对此不作限定。
需要说明的是，这里所说的SearchSpace information element为高层参数，对于物理层来说，可认为该高层参数用于配置搜索空间集。下文中，在涉及高层参数的配置时，搜索空间均可以理解为物理层的搜索空间集。为了简洁，下文中省略对相同或相似情况的说明。
3、搜索空间：终端设备盲检测的搜索范围，或者说，终端设备需要监听的候选下行控制信道的集合。搜索空间的物理资源可以由控制资源集合搜索空间集共同确定。例如，控制资源集可指示搜索空间的频域位置和持续时间，搜索空间集可指示搜索空间在时域上的起始位置，如起始时隙。在本申请实施例中，终端设备可以基于PDCCH配置中配置的控制资源集和搜索空间集共同确定盲检测PDCCH的时频资源。
4、PDCCH配置(PDCCH configuration)：网络设备可以基于每个小区(cell)中的每个带宽部分(bandwidth part，BWP)配置PDCCH参数，例如，控制资源集、控制资源 集组(CORESET group)、搜索空间集、搜索空间集组(SS group)以及其他可用于盲检测PDCCH的参数。PDCCH配置例如可以通过高层参数中的PDCCH-Config IE配置。该PDCCH-Config IE中例如可以包括控制资源集增加状态列表(controlResourceSetToAdd ModList)和控制资源集释放列表(controlResourceSetToReleaseList)。各列表中可以包括一个或多个控制资源集的标识。该PDCCH-Config IE中例如还可以包括搜索空间增加状态列表(searchSpacesToAddModList)和搜索空间释放列表(searchSpacesToReleaseList)。各列表中可以包括一个或多个搜索空间的标识。
可选地，每个PDCCH配置中还可以指示一个或多个控制资源集组和/或一个或多个搜索空间组。例如，PDCCH-Config IE中的控制资源集增加状态列表中可以包括一个或多个控制资源集组以及各控制资源集组中包含的控制资源集的标识。又例如，PDCCH-Config IE中的搜索空间增加列表中可以包括一个或多个搜索空间组以及各搜索空间组中包含的搜索空间的标识。
由PDCCH配置可以确定一个或多个搜索空间。在本申请实施例中，对于终端设备而言，PDCCH的PDCCH配置可以理解为接收该PDCCH时所基于的PDCCH配置，或者说，终端设备在由该PDCCH配置确定的搜索空间中盲检PDCCH；对于网络设备而言，PDCCH的PDCCH配置可以理解为发送该PDCCH时所基于的PDCCH配置，或者说，网络设备在由该PDCCH配置所确定的搜索空间中的部分资源上发送PDCCH。
5、小区(cell)与小区组(cell group)：小区，也可以称为服务小区(serving cell)。小区可以理解成是高层从资源管理或移动性管理或服务单元的角度来描述的。每个网络设备的覆盖范围可以被划分为一个或多个服务小区，且该服务小区可以看作由一定频域资源组成。在本申请实施例中，小区可以替换为服务小区或载波单元(component carrier，CC，或者称，成员载波、组成载波、载波等)。在本申请实施例中，“小区”、“服务小区”和“CC”交替使用，在不强调其区别时，其所要表达的含义是一致的。
需要说明的是，小区可以网络设备的无线网络的覆盖范围内的区域。在本申请实施例中，不同的小区可以对应不同的网络设备。例如，小区#1中的网络设备和小区#2中的网络设备可以是不同的网络设备，如，基站。也就是说，小区#1和小区#2可以由不同的基站来管理，这种情况下，可以称为小区#1和小区#2共站，或者说，同站。小区#1中的网络设备和小区#2中的网络设备也可以是同一基站的不同的射频处理单元，例如，射频拉远单元(radio remote unit，RRU)，也就是说，小区#1和小区#2可以由同一基站管理，具有相同的基带处理单元和中频处理单元，但具有不同的射频处理单元。本申请对此不做特别限定。
终端设备可以预先获取小区标识。网络设备可以通过高层信令为终端设备指示小区标识。例如，终端设备可以在下行同步过程中获取小区标识。本申请对于终端设备获取小区标识的具体方法不作限定。
小区组，也可以称为服务小区组。小区组可以是一个或多个小区的集合。小区组中所包含的小区可以通过高层信令来指示。例如，网络设备可以通过RRC消息向终端设备指示每个小区组中所包含的小区。
在同一个小区组中，各网络设备之间可以的回程链路可以是理想回程(ideal backhaul)的，同一小区组中的多个网络设备可以相互协作，通过一个下行控制信息(downlink control  information，DCI)做调度。不同小区组中的网络设备之间的回程链路可以是非理想回程(non-ideal backhaul)的，不同小区组中的网络设备可以通过各自发送的DCI来做调度。
终端设备可以预先获取小区组的信息。例如，终端设备可以预先确定具有通信连接的小区是否属于同一小区组。网络设备可以通过高层信令为终端设备指示小区组中包含的小区。例如，网络设备可以通过高层信令，如RRC消息，向终端设备指示小区组中包含的小区。
6、波束：波束在NR协议中的体现可以是空域滤波器(spatial filter)，或者称空间滤波器或空间参数(spatial parameters)。用于发送信号的波束可以称为发射波束(transmission beam，Tx beam)，也可以称为空间发送滤波器(spatial domain transmit filter)或空间发射参数(spatial domain transmit parameter)；用于接收信号的波束可以称为接收波束(reception beam，Rx beam)，也可以称为空间接收滤波器(spatial domain receive filter)或空间接收参数(spatial domain receive parameter)。
发射波束可以是指信号经天线发射出去后在空间不同方向上形成的信号强度的分布，接收波束可以是指从天线上接收到的无线信号在空间不同方向上的信号强度分布。
7、波束配对关系：即，发射波束与接收波束之间的配对关系，也就是空间发射滤波器与空间接收滤波器之间的配对关系。在具有波束配对关系的发射波束和接收波束之间传输信号可以获得较大的波束赋形增益。
在一种实现方式中，发送端(如，网络设备)和接收端(如，终端设备)可以通过波束训练来获得波束配对关系。具体地，发送端可通过波束扫描的方式发送参考信号，接收端也可通过波束扫描的方式接收参考信号。具体地，发送端可通过波束赋形的方式在空间形成不同指向性的波束，并可以在多个具有不同指向性的波束上轮询，以通过不同指向性的波束将参考信号发射出去，使得参考信号在发射波束所指向的方向上发射参考信号的功率可以达到最大。接收端也可通过波束赋形的方式在空间形成不同指向性的波束，并可以在多个具有不同指向性的波束上轮询，以通过不同指向性的波束接收参考信号，使得该接收端接收参考信号的功率在接收波束所指向的方向上可以达到最大。
通过遍历各发射波束和接收波束，接收端可基于接收到的参考信号进行信道测量，并将测量得到的结果通过信道状态信息(channel state information，CSI)上报发送端。例如，接收端可以将参考信号接收功率(reference signal receiving power，RSRP)较大的部分参考信号资源上报给发送端，如上报参考信号资源的标识，以便发送端在传输数据或信令时采用信道质量较好的波束配对关系来收发信号。
8、传输配置指示(transmission configuration indicator，TCI)状态：可用于指示两种参考信号之间的准共址(quasi-co-location，QCL)关系。每个TCI状态中可以包括服务小区的索引(ServeCellIndex)、带宽部分(band width part，BWP)标识(identifier，ID)和参考信号资源标识。其中，参考信号资源标识例如可以为以下至少一项：非零功率(non-zero power，NZP)CSI-RS参考信号资源标识(NZP-CSI-RS-ResourceId)、非零功率CSI-RS参考信号资源集标识(NZP-CSI-RS-ResourceSetId)或SSB索引(SSB-Index)。
其中，服务小区的索引、BWP ID以及参考信号资源标识指的是在波束(beam)训练过程中所使用的参考信号资源以及所对应的服务小区和BWP。由于在波束训练过程中，网络设备基于不同的参考信号资源通过不同的发射波束发送参考信号，因此通过不同的发 射波束发送的参考信号可以关联不同的参考信号资源；终端设备基于不同的参考信号资源通过不同的接收波束接收参考信号，因此通过不同的接收波束接收的参考信号也可以关联不同的参考信号资源。在波束训练过程中，终端设备可以维护服务小区的索引、BWP ID以及参考信号资源标识与接收波束的对应关系，网络设备可以维护服务小区的索引、BWP ID以及参考信号资源标识与发射波束的对应关系。通过参考信号资源标识，便可以建立接收波束和发射波束之间的配对关系。
在此后的通信过程中，终端设备可以基于网络设备所指示的TCI状态确定接收波束，网络设备可以基于同一TCI状态确定发射波束。
具体地，网络设备可通过高层信令(如RRC消息)为终端设备配置TCI状态(TCI state)列表。该TCI状态列表中可以包括多个TCI状态。此后，网络设备可以通过高层信令(如MAC CE)激活一个或多个TCI状态。被激活的TCI状态为上述RRC消息所配置的TCI状态列表的一个子集。此后，网络设备还可以通过物理层信令(如DCI)中的TCI字段指示一个被选择的TCI状态。该DCI例如可以为调度物理下行资源(如PDSCH)的DCI。
9、PDSCH配置(PDSCH configuration)：用于为终端设备配置PDSCH参数。该PDSCH参数例如可以包括扰码标识、DMRS映射类型、TCI状态增加列表、TCI状态释放列表以及资源分配等信息。
此外，为了便于理解本申请实施例，作出以下几点说明。
第一，在本申请中，为便于描述，在涉及编号时，可以从0开始连续编号。例如，某一时隙中的第0个符号，可以是指该时隙的首个符号。当然，具体实现时不限于此。例如，也可以从1开始连续编号。例如，某一时隙中的第1个符号，也可以是指该时隙的首个符号。由于编号的起始值不同，同一个符号在时隙中所对应的编号也不同。
应理解，上文所述均为便于描述本申请实施例提供的技术方案而进行的设置，而并非用于限制本申请的范围。
第二，在下文示出的实施例中第一、第二以及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实施例的范围。例如，区分不同的PDCCH、不同的PDSCH等。
第三，在下文示出的实施例中，“预先获取”可包括由网络设备信令指示或者预先定义，例如，协议定义。其中，“预先定义”可以通过在设备(例如，包括终端设备和网络设备)中预先保存相应的代码、表格或其他可用于指示相关信息的方式来实现，本申请对于其具体的实现方式不做限定。
第四，本申请实施例中涉及的“保存”，可以是指的保存在一个或者多个存储器中。所述一个或者多个存储器，可以是单独的设置，也可以是集成在编码器或者译码器，处理器、或通信装置中。所述一个或者多个存储器，也可以是一部分单独设置，一部分集成在译码器、处理器、或通信装置中。存储器的类型可以是任意形式的存储介质，本申请并不对此限定。
第五，本申请实施例中涉及的“协议”可以是指通信领域的标准协议，例如可以包括LTE协议、NR协议以及应用于未来的通信系统中的相关协议，本申请对此不做限定。
第六，“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和c中的至少一项(个)，可以表示：a，或，b，或，c，或，a和b，或，a和c，或，b和c，或，a、b和c。其中a、b和c分别可以是单个，也可以是多个。
为便于理解本申请实施例，下面以图1示出的通信系统为例详细说明适用于本申请实施例提供的接收发送和数据的方法的通信系统。图1示出了适用于本申请实施例的发送和接收数据的方法的通信系统100的示意图。如图所示，该通信系统100可以包括至少一个终端设备，如图中所示的终端设备101；该通信系统100还可以包括至少一个网络设备，如图中所示的网络设备#1 102或网络设备#2 103。
可选地，该通信系统100可以包括多个网络设备，如图中所示的网络设备#1 102和网络设备#2 103。该网络设备#1 102和网络设备#2 103可以是同一个小区中的网络设备，也可以是不同小区中的网络设备，本申请对此不作限定。图中仅为示例，示出了网络设备#1 102和网络设备#2 103位于同一个小区中的示例。
在通信系统100中，网络设备#1 102和网络设备#2 103彼此之间可通过回程(backhaul)链路通信，该回程链路可以是有线回程链路(例如光纤、铜缆)，也可以是无线回程链路(例如微波)。网络设备#1 102和网络设备#2 103可以进行相互协同，来为终端设备101提供服务。因此，终端设备101可通过无线链路分别与网络设备#1 102和网络设备#2 103通信。
此外，网络设备#1 102和网络设备#2 103中的一个或多个还可以分别采用载波聚合技术，在一个或多个CC上为终端设备101调度PDSCH。例如，网络设备#1 102可以在CC#1和CC#2上为终端设备101调度PDSCH，网络设备#2 103可以在CC#1和CC#3上为终端设备101调度PDSCH。网络设备#1 102和网络设备#2 103所调度的CC可以是相同的，也可以是不同的，本申请对此不作限定。
相互协同的网络设备之间的通信时延可以分为理想回程(ideal backhaul)和非理想回程(non-ideal backhaul)。理想回程下的两站点之间，通信时延可以是微秒级别，与NR中毫秒级别的调度相比，可以忽略不计；非理想回程下的两站点之间，通信时延可以是毫秒级别，与NR中毫秒级别的调度相比，无法忽略。
因此，一种基于多个DCI的多站点调度方案被提出。基于多个DCI的多站点调度方案支持多个网络设备分别通过各自发送的DCI为终端设备调度各自的PDSCH，进行数据传输，上述PDSCH在时域和/或频域资源上可以完全重叠、部分重叠或不重叠。可选的，UE根据各个网络设备发送的DCI，独立解调其调度的PDSCH；可选地，UE分别对不同网络设备发送的PDSCH对应的确认(acknowledgement，ACK)信息/否定确认(negative acknowledgement，NACK)信息，反馈给对应的网络设备。即，UE可以接收多个小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)和/或调制编码方式(modulation coding scheme，MCS)-C-RNTI加扰的PDCCH，这些PDCCH分别可以调度在时域和/或频域上完全重叠、部分重叠或不重叠的PDSCHs。可选地，UE根据各个PDCCH独立解调其对应的PDSCH。可选地，UE根据PDCCH属性，分别反馈其调度的PDSCH对应的ACK信息/NACK信息。
由于网络设备对于终端设备而言是透明的，终端设备可以接收到多个DCI，但并不知 道该多个DCI是来自一个网络设备还是多个网络设备。因此，这种基于多个DCI的多站点调度方案又可以称为多DCI调度方案。
举例而言，图1的网络设备#1 102可以向终端设备101发送PDCCH#1，该PDCCH#1中可以携带DCI#1，该DCI#1可用于为终端设备101调度PDSCH#1。图1中的网络设备#2 103也可以向终端设备101发送PDCCH#2，该PDCCH#2中可以携带DCI#2，该DCI#2可用于为终端设备101调度PDSCH#2。该PDSCH#1和PDSCH#2在资源上可以重叠，也可以不重叠。网络设备#1 102和网络设备#2 103可以通过空分复用的传输模式分别向终端设备发送PDSCH。
然而，在有些情况下，网络设备，如网络设备#1 102，可能会基于某些紧急业务，如超可靠低延迟(ultra reliable and low latency communication，URLLC)业务，通过另一PDCCH紧急地为终端设备调度PDSCH。该PDCCH例如可以记作PDCCH#3，该PDSCH例如可以记作PDSCH#3。该PDCCH#3与网络设备#1 102此前调度的PDSCH#1可能出现资源重叠，该PDSCH#3与网络设备#1 102此前调度的PDSCH#1也可能出现资源重叠。如果网络设备#1 102不做任何处理，则终端在接收PDCCH#3或PDSCH#3时可能会受到PDSCH#1上传输的数据的干扰，有可能导致PDCCH#3或PDSCH#3解码失败；相应地，PDCCH#3或PDSCH#3也可能会对PDSCH#1上传输的数据造成干扰，造成PDSCH#1接收质量下降，甚至解码失败。因此，可能导致数据传输性能下降，系统性能下降。
有鉴于此，本申请提供一种发送和接收数据的方法，以期提高数据传输性能。
下面结合附图详细说明本申请实施例提供的发送和接收数据的方法。
图2是从设备交互的角度示出的本申请实施例提供的发送和接收数据的方法200的示意性流程图。如图所示，该方法200可以包括步骤210至步骤260。下面详细说明方法200中的各步骤。
需要说明的是，本申请提供的发送和接收数据的方法可以应用于无线通信系统中，例如，图1中所示的通信系统100中。处于通信系统中的通信装置之间可具有无线通信连接关系。例如，图1中所示的终端设备101分别可以与网络设备#1 102和网络设备#2 103之间具有无线通信连接关系。网络设备#1 102和网络设备#2 103之间可以是理想回程链路，也可以是非理想回程链路，本申请对此不作限定。
当网络设备#1 102和网络设备#2 103之间为理想回程链路时，可以认为该网络设备#1 102和网络设备#2 103属于同一网络设备组。当网络设备#1 102和网络设备#2 103之间为非理想回程链路时，可以认为该网络设备#1 102和网络设备#2 103属于不同的网络设备组。同一网络设备组中的网络设备例如可以通过一个DCI来做调度，或者，可以采用一个调度实体来做调度，或者，可以基于同一个PDCCH配置来发送PDCCH等。
下文中示出的第一网络设备例如可以对应于图1中的网络设备#1 102，第二网络设备例如可以对应于图1中的网络设备#2 103。为方便说明，下文分别以第一网络设备和第二网络设备为同一网络设备或不同的网络设备为例详细说明本申请实施例提供的发送和接收数据的方法。应理解，在下文示出的实施例中，第一网络设备和第二网络设备为同一网络设备，可以替换为，第一网络设备和第二网络设备属于同一网络设备组；第一网络设备和第二网络设备为不同的网络设备，可以替换为，第一网络设备和第二网络设备属于不同的网络设备组。
在步骤210中，终端设备接收第一PDCCH，该第一PDCCH可用于调度第一PDSCH。
为便于区分和说明，将终端设备在步骤210中接收到的PDCCH记作第一PDCCH，该第一PDCCH调度的PDSCH记作第一PDSCH。该第一PDCCH例如可以是一个或多个网络设备中的任一网络设备向终端设备发送的PDCCH。发送该第一PDCCH的网络设备例如记作第一网络设备。即，在步骤210中，该第一网络设备发送第一PDCCH。也就是说，该第一PDSCH为第一网络设备通过第一PDCCH为终端设备调度的物理下行资源。
具体地，该第一PDCCH上可以传输DCI。为便于区分，将该第一PDCCH上传输的DCI记作第一DCI。该第一DCI中可以包含其所调度的第一PDSCH的时频资源、天线端口以及PDSCH映射类型等信息。
在本实施例中，该第一PDSCH可用于传输第一数据。可选地，该第一数据为除紧急业务之外的业务的数据，或者说，非紧急业务的数据，亦或者说，传输优先级较低的数据。作为示例而非限定，该第一数据为增强移动带宽(enhanced mobile broadband，eMBB)业务的数据。
在步骤220中，终端设备接收第二PDCCH。
为便于区分和说明，将终端设备在步骤220中接收到的PDCCH记作第二PDCCH，并将该第二PDCCH上传输的DCI记作第二DCI。该第二PDCCH有可能是由上文所述的第一网络设备基于某些紧急业务，如URLLC业务，紧急地为终端设备调度资源而发送的，也有可能是由另一网络设备发送的，如第二网络设备。
由于对于终端设备而言，网络设备是透明的。终端设备并不能预先获知哪一个或多个网络设备向它发送PDCCH和PDSCH。为便于区分和说明，将步骤220中向终端设备发送第二PDCCH的网络设备记作第二网络设备。即，在步骤220中，该第二网络设备发送第二PDCCH。
应理解，该第二网络设备与上文所述的第一网络设备可能是同一网络设备，也可能是不同的网络设备；该第一网络设备和第二网络设备可以属于同一网络设备组，也可能属于不同的网络设备组。后文中将详细说明终端设备基于本申请实施例所提供的方法来确定上述第一网络设备和第二网络设备是否为同一网络设备或是否属于同一网络设备组的具体过程，这里暂且省略对其具体过程的详细描述。
还应理解，图中仅为示意，将第一网络设备和第二网络设备示为两个不同的网络设备，这不应对本申请构成任何限定。当第一网络设备或第二网络设备为同一网络设备时，图中的第一网络设备和第二网络设备执行的步骤可以由同一网络设备执行，如第一网络设备。
在步骤230中，该终端设备基于第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源。
具体地，该终端设备可以基于第一PDCCH所调度的第一PDSCH，以及第二PDCCH，确定用于传输第一数据的第一资源。该第一资源属于第一PDSCH。或者说，该第一资源可以是第一PDSCH中的部分资源或全部资源。换句话说，第一网络设备可以通过第一PDCCH向终端设备指示了用于传输第一数据的资源范围，终端设备可以进一步结合第二PDCCH，从该资源范围内进一步确定用于传输第一数据的第一资源。
可选地，该第二PDCCH用于调度第二PDSCH。
为便于区分，将第二PDCCH调度的PDSCH记作第二PDSCH。该第二PDCCH中的 DCI中可以包含其所调度的第二PDSCH的时频资源、天线端口以及PDSCH映射类型等信息。
为方便理解，图3至图5是第二PDCCH、第一PDSCH及第二PDSCH的资源分布的示意图。但应理解，图中所示仅为便于理解而示意，不应对本申请构成任何限定。
可选地，在第二PDCCH与第一PDSCH发生资源重叠的情况下，步骤230具体包括：终端设备将第一PDSCH中除去第二PDCCH之外的资源确定为第一资源。
如图3所示，第二PDCCH的全部资源落入第一PDSCH的范围内。应理解，图3所示仅为示例，本申请对于第二PDCCH与第一PDSCH间重叠的区域大小及重叠位置并不做限定。该第二PDCCH与第一PDSCH发生资源重叠，具体可以包括：该第二PDCCH的部分资源与第一PDSCH重叠，或者，该第二PDCCH的全部资源与第一PDSCH重叠。并且，第二PDCCH可以在与第一PDSCH的起始位置发生资源重叠，也可以在第一PDSCH的结束位置发生资源重叠，或者，还可以与第一PDSCH的中间位置发生资源重叠，或者还可以与第一PDSCH的全部位置发生资源重叠。本申请对此不做限定。
在第二PDCCH与第一PDSCH发生资源重叠的情况下，终端设备可以将第一PDSCH中除去第二PDCCH之外的资源确定为第一资源。
换句话说，终端设备在接收第一PDSCH的过程中检测到第二PDCCH时，可以根据第一PDCCH指示的第一PDSCH所占的资源和第二PDCCH所占的资源确定第一资源，在确定的第一资源上接收并解调第一数据，并可以根据第二PDCCH接收并解调第二PDSCH上的第二数据。
可选地，在第二PDSCH与第一PDSCH发生重叠的情况下，步骤230具体包括：终端设备将第一PDSCH中除第二PDSCH之外的资源确定为第一资源。
如图4所示，第二PDSCH的全部资源落入第一PDSCH的范围内。应理解，图4所示仅为示例，本申请对于第二PDSCH与第一PDSCH间重叠的区域大小及重叠位置并不做限定。该第二PDSCH与第一PDSCH发生资源重叠，具体可以包括：该第二PDSCH的部分资源与第一PDSCH重叠，或者，该第二PDSCH的全部资源与第一PDSCH重叠。并且，第二PDSCH可以与第一PDSCH的起始位置发生资源重叠，也可以与第一PDSCH的结束位置发生资源重叠，或者，还可以与第一PDSCH的中间位置发生资源重叠，或者还可以与第一PDSCH的全部位置发生资源重叠。本申请对此不作限定。
在第二PDSCH与第一PDSCH发生重叠的情况下，终端设备可以将第一PDSCH中除去第二PDSCH之外的资源确定为第一资源。换句话说，终端设备确定在接收第一PDSCH的同时有第二PDSCH到来时，可以根据第一PDCCH指示的第一PDSCH所占的资源和第二PDCCH指示的第二PDSCH所占的资源确定第一资源，并可以在确定的第一资源上接收并解调第一数据，并可以根据第二PDCCH接收并解调第二PDSCH上的第二数据。
可选地，在第二PDCCH和第二PDSCH均与第二PDCCH发生资源重叠的情况下，步骤230具体包括：终端设备将第一PDSCH中除第二PDCCH和第二PDSCH之外的资源确定为第一资源。
如图5所示，第二PDCCH和第二PDSCH的全部资源均落入第一PDSCH的范围内。应理解，图5所示仅为示例，本申请对于第二PDCCH和第二PDSCH与第一PDSCH间重叠的区域大小及重叠位置并不做限定。该第二PDCCH和第二PDSCH与第一PDSCH 发生资源重叠，具体可以包括：第二PDCCH的部分资源与第一PDSCH重叠，且第二PDSCH的部分资源与第一PDSCH重叠；或者，第二PDCCH的全部资源与第一PDSCH重叠，且第二PDSCH的部分资源与第一PDSCH重叠；或者，第二PDCCH的部分资源与第一PDSCH重叠，且第二PDSCH的全部资源与第一PDSCH重叠；或者，第二PDCCH的全部资源与第一PDSCH重叠，且第二PDSCH的全部资源与第一PDSCH重叠。并且，第二PDCCH可以与第一PDSCH的起始位置发生资源重叠，第二PDSCH可以与第一PDSCH的中间位置或结束位置发生重叠；或者，第二PDCCH可以与第一PDSCH的中间位置发生资源重叠，第二PDSCH可以与第一PDSCH的中间位置或结束位置发生重叠，或者第二PDCCH和第二PDSCH还可以与第一PDSCH的全部位置发生资源重叠。本申请对此不作限定。
在第二PDCCH和第二PDSCH均与第二PDCCH发生资源重叠的情况下，终端设备可以将第一PDSCH中除第二PDCCH和第二PDSCH之外的资源确定为第一资源。
换句话说，终端设备在接收第一PDSCH的过程中，检测到第二PDCCH，并根据第二PDCCH确定第二PDSCH与第一PDSCH发生资源重叠。则终端设备可以根据第一PDCCH指示的第一PDSCH所占的资源、第二PDCCH所占的资源和第二PDCCH指示的第二PDSCH所占的资源确定第一资源，在第一资源上接收并解调第一数据。终端设备还可以在第二PDSCH所占的资源上接收并解调第二数据。
终端设备在确定第一资源的过程中，可以将第一PDSCH中与第二PDCCH和/或第二PDSCH重叠的那部分资源除去。第一PDSCH中除去第二PDCCH和/或第二PDSCH之外的资源可以作为第一资源。这可以理解为终端设备将该第一PDSCH中与第二PDCCH和/或第二PDSCH重叠的部分资源丢弃，或者说，终端设备丢弃第一PDSCH的部分资源。
终端设备在从第一PDSCH中丢弃重叠的资源时，可以以时频单元为单位，例如以资源块(resource block，RB)为粒度，也可以以时域单元为单位，例如，以符号为粒度。例如，当第一PDSCH与第二PDCCH在某个RE上重叠，则可以将该RE所在的RB从第一PDSCH中除去；又例如，当第一PDSCH与第二PDSCH在某个RE上重叠，则可以将该RE所在的符号上的物理资源从第一PDSCH中除去。
应理解，这里所列举的资源的处理粒度仅为示例，不应对本申请构成任何限定。
可选地，在第二PDCCH和第二PDSCH均未与第二PDCCH发生资源重叠的情况下，步骤230具体包括：在第二PDCCH和第二PDSCH均未与第一PDSCH发生资源重叠的情况下，将第一PDCCH调度的第一PDSCH确定为第一资源。
也就是说，在第一PDSCH与第二PDCCH和第二PDSCH均未发生资源重叠的情况下，可以直接根据第一PDCCH确定第一PDSCH。此情况下，第一资源可以为第一PDSCH的全部资源。
在步骤240中，第一网络设备确定用于传输第一数据的第一资源。
如果第一PDCCH和第二PDCCH由同一网络设备发送，则该第一网络设备可以预先知道。在这种情况下，第一网络设备可以基于如步骤230中所述的方法确定用于传输第一数据的第一资源。
基于步骤230中所描述的确定第一资源的方法，第一网络设备在确定第一PDSCH与第二PDCCH和第二PDSCH中的任意一项发生资源重叠时，可以将第一PDSCH中除去 资源重叠区域之外的资源确定为第一资源。该资源重叠区域例如可以是第一PDSCH与第二PDCCH的重叠区域，也可以是第一PDSCH与第二PDSCH的重叠区域，还可以是第一PDSCH与第二PDCCH和第二PDSCH的重叠区域。本申请对此不作限定。
换句话说，第一网络设备可以在资源重叠区域不发送第一数据，优先发送第二PDCCH和/或第二PDSCH。
终端设备不希望第一PDSCH与第二PDCCH和/或第二PDSCH中的任意一项发生资源重叠。因此，第一网络设备可以在调度资源的时候，避免第一资源与第二PDCCH和PDSCH中的任意一项发生资源重叠。
进一步地，可以存在调度规则，如终端设备不希望在先接收到的PDCCH调度的PDSCH被后接收到。
例如，假设终端设备先接收到的PDCCH为第一PDCCH，后接收到的PDCCH为第二PDCCH。可选地，终端设备不希望第二PDCCH所调度的第二PDSCH的起始符号位置早于第一PDCCH所调度的第一PDSCH的结束符号位置。可选地，终端设备不希望第二PDCCH所调度的第二PDSCH的起始符号位置早于第一PDCCH所调度的第一PDSCH的起始符号位置。也就是说，终端设备希望在第二PDSCH之前接收到第一PDSCH。
也就是说，网络设备可以基于上述调度规则进行第一PDSCH和第二PDSCH的调度，以使得所调度的第一PDSCH和第二PDSCH能够满足上文所述的要求。
如果第一PDCCH和第二PDCCH由不同的网络设备发送，则该第一网络设备可能也并不知道还有其他网络设备为该终端设备服务。在这种情况下，第一网络设备仍然可以依据现有技术，直接通过第一PDSCH传输第一数据，而不需要重新确定用于传输第一数据的第一资源。
在步骤250中，终端设备在第一资源上接收第一数据。相应地，第一网络设备在第一资源上发送第一数据。
也就是说，无论第一网络设备和第二网络设备是否为同一网络设备，终端设备都不希望第一资源与第二PDCCH和第二PDSCH中的任意一项发生资源重叠。或者说，终端设备不希望在第二PDCCH上或在第二PDSCH上同时接收第一数据。
换句话说，终端设备可以在资源重叠区域不接收第一数据，以保证第二PDCCH和/或第二PDSCH的成功接收。
可选地，在步骤260中，终端设备在第二PDSCH上接收第二数据。
如果上述第一网络设备和第二网络设备为同一网络设备，则在步骤260中，第一网络设备在第二PDSCH上发送第二数据；如果第一网络设备和第二网络设备为不同的网络设备，则在步骤260中，第二网络设备在第二PDSCH上发送第二数据。
由于在NR中，多种业务可以共存。当一些传输优先级高的业务，可以是紧急业务到来时，如URLLC业务，网络设备可以紧急地调度资源，以保证紧急业务优先传输。在本实施例中，可选地，第二数据为紧急业务的数据。作为示例而非限定，该第二数据为URLLC业务的数据。
应理解，第二数据为紧急业务的数据仅为一种可能，而不应对本申请构成任何限定。第二数据也可以为非紧急业务的数据，如前所述的eMBB业务的数据。
可以理解的是，当第一网络设备和第二网络设备为同一网络设备时，该第一网络设备 在前一次调度PDSCH(如第一PDSCH)传输的eMBB业务的数据未完成的情况下，通常不会调度另一PDSCH(如第二PDSCH)来传输新的eMBB业务的数据。
当第一网络设备和第二网络设备为不同的网络设备时，该第一数据和第二数据也可以为不同业务类型的数据，也可以为同一业务类型的数据，本申请对此不作限定。如，第一数据为非紧急业务的数据，第二数据为紧急业务的数据。终端设备可以在接收到紧急业务的调度时，优先接收第二数据，从而保证第二数据的可靠传输。如前所述，由于终端设备在第一PDSCH与第二PDCCH和第二PDSCH中的任意一项发生资源重叠时，优先接收第二PDCCH和/或第二PDSCH，也就是优先接收第二数据。因此可以保证紧急业务的数据的成功接收，从而保证传输可靠性。
可选地，当第一PDSCH和第二PDSCH传输的数据所属的业务类型均为非紧急业务时，该第一PDSCH和第二PDSCH可以来自不同的网络设备，或不同的网络设备组。第一网络设备和第二网络设备可以通过空分复用的传输模式传输不同的数据。
由于不同的业务类型可以与PDSCH的时域资源位置的映射类型相关联。可选地，当第一PDSCH和第二PDSCH的时域资源位置的映射类型均为类型A时，该第一PDSCH和第二PDSCH可以来自不同的网络设备，或不同的网络设备组。第一网络设备和第二网络设备可以通过空分复用的传输模式传输不同的数据。
在这种情况下，终端设备可以根据第一PDCCH确定第一PDSCH，并在第一PDSCH上接收第一数据；终端设备还可以根据第二PDCCH确定第二PDSCH，并在该第二PDSCH上接收第二数据。终端设备可以对接收到的第一数据和第二数据分别解调。
可选地，当第一PDSCH和第二PDSCH传输的数据所属的业务类型均为紧急业务时，该第一PDSCH和第二PDSCH也可以来自不同的网络设备。第一网络设备和第二网络设备可以通过分集传输的传输模式传输相同的数据，即，第一数据和第二数据可以是相同的数据。
由于不同的业务类型可以与PDSCH的时域资源位置的映射类型相关联。可选地，当第一PDSCH的时域资源位置的映射类型和第二PDSCH的时域资源位置的映射类型均为类型B时，该第一PDSCH和第二PDSCH也可以来自不同的网络设备，或不同的网络设备组。第一网络设备和第二网络设备可以通过分集传输的传输模式传输相同的数据。
在这种情况下，终端设备可以根据第一PDCCH确定第一PDSCH，并在第一PDSCH上接收第一数据；终端设备还可以根据第二PDCCH确定第二PDSCH，并在该第二PDSCH上接收第二数据。终端设备可以对接收到的数据联合解调。
可选地，当第一PDSCH和第二PDSCH传输的数据所属的业务类型均为紧急业务时，或者说，当第一PDSCH的时域资源位置的映射类型和第二PDSCH的时域资源位置的映射类型均为类型B时，该第一PDSCH和第二PDSCH也可以来自不同的网络设备。
终端设备也可以分别根据第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源，并在第一资源上接收第一数据；终端设备可以根据第二PDCCH确定第二PDSCH，并在第二PDSCH上接收第二数据。终端设备可以对接收到的第一数据和第二数据分别解调。
或者，终端设备还可以根据第一PDCCH确定第一PDSCH，并在第一PDSCH上接收第一数据；并可以根据第二PDCCH确定第二PDSCH，并在该第二PDSCH上接收第二数 据。终端设备可以对接收到的第一数据和第二数据分别解调。
可选地，当第一PDSCH传输的数据所属的业务类型为非紧急业务，第二PDSCH传输的数据所属的业务类型为紧急业务，该第一PDSCH和第二PDSCH可以来自同一网络设备，或者来自同一网络设备组，也可以来自同一网络设备组中不同的网络设备，或者来自不同的网络设备组。
由于不同的业务类型可以与PDSCH的时域资源位置的映射类型相关联。可选地，当第一PDSCH的时域资源位置的映射类型为类型A，第二PDSCH的时域资源位置的映射类型为类型B，则该第一PDSCH和第二PDSCH可以来自同一网络设备，或者来自同一网络设备组，也可以来自不同的网络设备，或者来自不同的网络设备组。
在这种情况下，终端设备可以根据第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源，并在第一资源上接收第一数据；终端设备可以根据第二PDCCH确定第二PDSCH，并在第二PDSCH上接收第二数据。终端设备可以对接收到的第一数据和第二数据分别解调。
事实上，当第一PDSCH和第二PDSCH来自不同的网络设备时，第一网络设备和第二网络设备例如可以通过空分复用的方式向终端设备发送数据。终端设备可以通过不同的接收波束接收数据。因此，当第一网络设备和第二网络设备为不同的网络设备时，第一网络设备和第二网络设备可以分别向终端设备发送下行数据。此情况下，第二网络设备所传输的第二数据可以是非紧急业务的数据，如eMBB业务的数据；也可以是紧急业务的数据，如URLLC业务的数据，本申请对此不作限定。换句话说，当第一网络设备和第二网络设备为不同的网络设备时，或，当第一网络设备和第二网络设备属于不同的网络设备组时，第二PDCCH和第二PDSCH与第一PDSCH可以重叠；当第一网络设备和第二网络设备为同一网络设备时，或，当第一网络设备和第二网络设备属于同一网络设备组时，终端设备不希望第二PDCCH和第二PDSCH中的任意一项与第一PDSCH发生资源重叠。
可选地，步骤230进一步包括：终端设备在第一PDCCH和第二PDCCH满足预设条件的情况下，根据第一PDCCH和第二PDCCH确定用于传输第一数据的第一资源。
可选地，步骤230进一步包括：终端设备在第一PDCCH和第二PDCCH不满足预设条件的情况下，根据第一PDCCH解调第一PDSCH，根据第二PDCCH解调第二PDSCH。
也就是说，当终端设备可以通过预设条件来确定，用于传输第一数据的第一资源为第一PDSCH还是第一PDSCH中除去第二PDCCH和/或第二PDSCH的那部分资源。当第一PDCCH和第二PDCCH满足预设条件时，终端设备可以在第一PDSCH中除去与第二PDCCH和/或第二PDSCH重叠的资源之后的那部分资源上接收第一数据，在第二PDSCH上接收第二数据；当第一PDCCH和第二PDCCH不满足预设条件时，终端设备可以在第一PDSCH上接收第一数据，并在第二PDSCH上接收第二数据。
当终端设备将第一PDSCH中与第二PDCCH和/或第二PDSCH重叠的那部分资源除去时，可以理解为终端设备将该第一PDSCH中与第二PDCCH和/或第二PDSCH重叠的部分资源丢弃，或者说，终端设备丢弃第一PDSCH的部分资源。因此，当第一PDCCH和第二PDCCH满足预设条件时，终端设备可以丢弃第一PDSCH的部分资源，以在丢弃的那部分资源上接收第二PDCCH和/或第二PDSCH；否则，终端设备可以对第一PDSCH和第二PDSCH分别独立接收。
可选地，该预设条件可用于确定该第一网络设备和第二网络设备是否为同一网络设备或者为同一网络设备组。
当第一网络设备和第二网络设备之间为非理想回程链路时，第一网络设备和第二网络设备分别可以通过各自的PDCCH来做调度。
因此，当终端设备确定第一网络设备和第二网络设备为同一网络设备时，可以确定第一PDCCH和第二PDCCH来自同一网络设备，也就可以确定第一PDSCH和第二PDSCH来自同一网络设备。在这种情况下，终端设备不希望第一资源与第二PDCCH和第二PDSCH中的任意一项发生资源重叠。终端设备可以按照上文中结合步骤230和附图所描述的方式丢弃第一PDSCH中的部分资源，以在该部分资源上接收第二PDCCH和/或第二PDSCH。
当终端设备确定第一网络设备和第二网络设备为不同的网络设备时，可以确定第一PDCCH和第二PDCCH来自不同的网络设备，也就可以确定第一PDSCH和第二PDSCH来自不同的网络设备。在这种情况下，终端设备可以分别在第一PDSCH和第二PDSCH上接收来自不同的网络设备的数据。该第一PDSCH上传输的第一数据和第二PDSCH上传输的第二数据可以是相互独立的。终端设备可以对接收到的第一数据和第二数据分别进行译码解调。
需注意，上文仅为方便说明，基于第一网络设备和第二网络设备之间为非理想回程链路这一假设，说明了发送和接收数据的方法。当第一网络设备和第二网络设备之间为理想回程链路时，第一网络设备和第二网络设备可以通过一个PDCCH来做调度。此情况下，该第一网络设备和第二网络设备虽然为不同的网络设备，但仍然可以满足下文所列举的预设条件。因此，上文实施例中所描述的第一网络设备和第二网络设备是否为同一网络设备可以替换为第一网络设备和第二网络设备是否为同一网络设备组。例如，第一网络设备和第二网络设备为同一网络设备，可以替换为，第一网络设备和第二网络设备来自同一网络设备组。又例如，第一网络设备和第二网络设备为不同的网络设备，可以替换为，第一网络设备和第二网络设备来自不同的网络设备组。
可选地，该预设条件可用于确定该第一网络设备和第二网络设备是否来自同一网络设备组。
一个网络设备组可以包括一个或网络设备。同一网络设备组内的网络设备之间可以认为是理想回程的，因此同一网络设备组中的一个或多个网络设备可以通过一个DCI来做调度，或者，可以采用一个调度实体来做调度，或者，可以基于同一个PDCCH配置来发送PDCCH等。不同网络设备组的网络设备之间可以认为是非理想回程的。因此，不同网络设备组的网络设备可以分别通过各自的PDCCH来做调度。
应理解，上文列举的对预设条件的两种可能的理解，而不应对本申请构成任何限定。当协议确定采用某一项或多项预设条件来确定是否结合第一PDCCH和第二PDCCH来确定第一资源时，终端设备并不关心该第一PDCCH和第二PDCCH是来自同一网络设备还是不同的网络设备，也不关心第一PDCCH和第二PDCCH来自同一网络设备组还是不同的网络设备组。
下面详细说明终端设备确定第一PDCCH和第二PDCCH是否满足预设条件。
需要说明的是，以下列举的各项可以单独使用，也可以多项结合使用，以用于确定是 否需要根据第一PDCCH和第二PDCCH重新确定第一资源。协议可以预先定义该预设条件。例如，该预设条件可以是下文列举的一项，也可以是下文列举的多项的结合，还可以是除下文列举之外的其他条件，本申请对此不作限定。这里仅为便于理解，示例性地给出了几种可能的预设条件，而不应对本申请构成任何限定。
可选地，当第一PDCCH的PDCCH配置与第二PDCCH的PDCCH配置相同时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
换句话说，当第一PDCCH和第二PDCCH满足预设条件时，第一PDCCH和第二PDCCH可以具有相同的PDCCH配置，或者说，第一PDCCH的PDCCH配置和第二PDCCH的PDCCH配置属于同一PDCCH配置。
如前所述，PDCCH配置可用于确定一个或多个搜索空间。对于终端设备而言，PDCCH的PDCCH配置可以理解为接收PDCCH时所基于的PDCCH配置，或者说，终端设备可以在由该PDCCH配置确定的搜索空间中盲检测PDCCH；对于网络设备而言，PDCCH的PDCCH配置可以理解为发送该PDCCH时所基于的PDCCH配置，或者说，网络设备可以在由该PDCCH配置所确定的搜索空间中的部分资源上发送PDCCH。
当终端设备确定盲检测到该第一PDCCH的搜索空间和盲检测到该第二PDCCH的搜索空间是基于同一PDCCH配置时，可以认为该第一PDCCH的PDCCH配置和第二PDCCH的PDCCH配置相同。
在本实施例中，不同的网络设备可以基于不同的PDCCH配置发送PDCCH。或者说，每个网络设备可以对应一个PDCCH配置。当第一网络设备和第二网络设备为同一网络设备时，可以基于同一PDCCH配置发送第一PDCCH和第二PDCCH；当第一网络设备和第二网络设备为不同的网络设备时，可以分别基于不同的PDCCH配置发送第一PDCCH和第二PDCCH。
作为一个实施例，若终端设备基于同一个PDCCH配置接收到第一PDCCH和第二PDCCH，或者说，该第一网络设备和第二网络设备基于同一个PDCCH配置向终端设备发送第一PDCCH和第二PDCCH，则终端设备可以确定该第一网络设备和第二网络设备为同一网络设备，或者，第一网络设备和第二网络设备属于同一网络设备组。终端设备可以进一步根据第一PDCCH和第二PDCCH重新确定第一资源。
若终端设备基于一个PDCCH配置接收到第一PDCCH，基于另一个PDCCH配置接收到第二PDCCH，或者说，第一网络设备基于一个PDCCH配置向终端设备发送第一PDCCH，第二网络设备基于另一个PDCCH配置向终端设备发送第二PDCCH。则终端设备可以确定该第一网络设备和第二网络设备为不同的网络设备，或者，第一网络设备和第二网络设备属于不同的网络设备组。终端设备可以直接在第一PDCCH调度的第一PDSCH上接收第一数据。
终端设备不希望基于同一个PDCCH配置发送的两个PDCCH所调度的PDSCH之间发送资源重叠。换句话说，当第一PDCCH对应的PDCCH配置和第二PDCCH对应的PDCCH配置相同时，终端设备不希望第一PDCCH调度的第一PDSCH和第二PDCCH调度的第二PDSCH之间发生资源重叠。
可选地，该第一网络设备和第二网络设备属于同一小区。即，同一小区可以配置两个或者更多个PDCCH配置，每个PDCCH配置可对应于一个网络设备。
应理解，该第一网络设备和第二网络设备也可以为不同小区的两个网络设备，上文举例仅为示例，不应对本申请构成任何限定。
此外，网络设备与PDCCH配置的对应关系可以预先协商确定。例如，网络设备之间可以通过回程链路协商和配置网络设备与PDCCH配置的对应关系。本申请对于网络设备与PDCCH配置的对应关系以及该对应关系的配置方式不作限定。
可选地，当第一PDCCH的控制资源集与第二PDCCH的控制资源集属于同一控制资源集时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
换句话说，当第一PDCCH和第二PDCCH满足预设条件时，第一PDCCH的控制资源集与第二PDCCH的控制资源集相同。
如前所述，控制资源集可用于确定PDCCH的搜索空间。对于终端设备而言，PDCCH的控制资源集可以理解为接收PDCCH时所基于的控制资源集，或者说，终端设备可以在由该控制资源集所确定的搜索空间中盲检测PDCCH；对于网络设备而言，PDCCH的控制资源集可以理解为发送该PDCCH时所基于的控制资源集，或者说，网络设备可以在由该控制资源集所确定的搜索空间中的部分资源上发送PDCCH。
当终端设备确定盲检测到该第一PDCCH的搜索空间和盲检测到该第二PDCCH的搜索空间是基于同一控制资源集时，可以认为该第一PDCCH的控制资源集与第二PDCCH的控制资源集相同。
作为一个实施例，若终端设备基于同一个PDCCH配置中的同一个控制资源集接收到第一PDCCH和第二PDCCH，或者说，该第一网络设备和第二网络设备基于同一个PDCCH配置中的同一个控制资源集分别发送第一PDCCH和第二PDCCH，则终端设备可以确定该第一网络设备和第二网络设备为同一网络设备，或者，第一网络设备和第二网络设备属于同一网络设备组。终端设备可以进一步根据第一PDCCH和第二PDCCH重新确定第一资源。
若终端设备基于一个控制资源集接收到第一PDCCH，基于另一个控制资源集接收到第二PDCCH，或者说，第一网络设备基于一个控制资源集向终端设备发送第一PDCCH，第二网络设备基于另一个控制资源集向终端设备发送第二PDCCH，则终端设备可以确定该第一网络设备和第二网络设备为不同的网络设备，或者，第一网络设备和第二网络设备属于不同的网络设备组。终端设备可以直接在第一PDCCH调度的第一PDSCH上接收第一数据。
可选地，该第一网络设备和第二网络设备属于同一小区。即，同一小区可以配置两个或者更多个控制资源集，每个控制资源集可对应于一个网络设备。
应理解，该第一网络设备和第二网络设备也可以为不同小区的两个网络设备，上文举例仅为示例，不应对本申请构成任何限定。
此外，网络设备与控制资源集的对应关系可以预先协商确定。例如，网络设备之间可以通过回程链路协商和配置网络设备与控制资源集的对应关系。本申请对于网络设备与控制资源集的对应关系以及该对应关系的配置方式不做限定。
可选地，当第一PDCCH的控制资源集与第二PDCCH的控制资源集属于同一控制资源集组时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
换句话说，当第一PDCCH和第二PDCCH满足预设条件时，该第一PDCCH的控制 资源集和第二PDCCH的控制资源集属于同一资源集组。
每个网络设备可以对应一个或多个控制资源集。也就是说，每个网络设备可以基于所对应的一个或控制资源集发送PDCCH。与同一个网络设备对应的一个或多个控制资源集可以定义为一个控制资源集组。即，每个网络设备可以对应一个控制资源集组。当终端设备确定盲检测到该第一PDCCH的搜索空间所基于的控制资源集和盲检测到该第二PDCCH的搜索空间所基于的控制资源集属于同一控制资源集组时，可以认为该第一PDCCH的控制资源集和第二PDCCH的控制资源集属于同一控制资源集组。
作为一个实施例，若终端设备基于同一个控制资源集组中的控制资源集接收到第一PDCCH和第二PDCCH，或者说，该第一网络设备发送第一PDCCH和第二网络设备发送第二PDCCH所基于的控制资源集属于同一控制资源集组，则终端设备可以确定该第一网络设备和第二网络设备为同一网络设备，或者，第一网络设备和第二网络设备属于同一网络设备组。终端设备可以进一步根据第一PDCCH和第二PDCCH重新确定第一资源。
若终端设备基于一个控制资源集组中的控制资源集接收到第一PDCCH，基于另一个控制资源集组中的控制资源集接收到第二PDCCH，或者说，第一网络设备基于一个控制资源集组中的控制资源集发送第一PDCCH，第二网络设备基于另一个控制资源集组中的控制资源集发送第二PDCCH，则终端设备可以确定该第一网络设备和第二网络设备为不同的网络设备，或者，第一网络设备和第二网络设备属于不同的网络设备组。终端设备可以直接在第一PDCCH调度的第一PDSCH上接收第一数据。
可选地，该第一网络设备和第二网络设备属于同一小区。即，同一小区可以配置两个或者更多个控制资源集组，每个控制资源集组可对应于一个网络设备。
应理解，该第一网络设备和第二网络设备也可以为不同小区的两个网络设备，上文举例仅为示例，不应对本申请构成任何限定。
此外，网络设备与控制资源集组的对应关系可以预先协商确定。例如，网络设备之间可以通过回程链路协商和配置网络设备与控制资源集组的对应关系。本申请对于网络设备与控制资源集组的对应关系以及该对应关系的配置方式不做限定。
可选地，当第一PDCCH的搜索空间集与第二PDCCH的搜索空间集属于同一搜索空间集时，终端设备确定第一PDCCH和第二PDCCH满足预设条件。
换句话说，当第一PDCCH和第二PDCCH满足预设条件时，第一PDCCH的搜索空间集与第二PDCCH的搜索空间集相同。
如前所述，搜索空间集可以是搜索空间的集合。一个搜索空间集可以包括一个或多个搜索空间。对于终端设备而言，PDCCH的搜索空间集可以理解为接收该PDCCH时所基于的搜索空间集，或者说，终端设备可以在该搜索空间集所包含的搜索空间中盲检测PDCCH；对于网络设备而言，PDCCH的搜索空间集可以理解为发送该PDCCH时所基于的搜索空间集，或者说，网络设备可以在该搜索空间集所包含的某一搜索空间上发送PDCCH。
当终端设备确定盲检测到该第一PDCCH的搜索空间集和盲检测到第二PDCCH的搜索空间集为同一搜索空间集时，可以认为该第一PDCCH的搜索空间集与第二PDCCH的搜索空间集相同。
上文中已经结合控制资源集详细说明了终端设备确定第一PDCCH和第二PDCCH是 否满足预设条件的具体方法，终端设备基于搜索空间集来确定第一PDCCH和第二PDCCH是否满足预设条件的具体方法与之相似，为了简洁，这里不再赘述。
此外，网络设备与搜索空间集的对应关系可以预先协商确定。例如，网络设备之间可以通过回程链路协商和配置网络设备与搜索空间集的对应关系。本申请对于网络设备与搜索空间集的对应关系以及该对应关系的配置方式不做限定。
可选地，当第一PDCCH的搜索空间集与第二PDCCH的搜索空间集属于同一搜索空间集组时，终端设备确定第一PDCCH和第二PDCCH满足预设条件。
换句话说，当第一PDCCH和第二PDCCH满足预设条件时，该第一PDCCH的搜索空间集与第二PDCCH的搜索空间集属于同一搜索空间集组。
每个网络设备可以对应一个或多个搜索空间集。也就是说，每个网络设备可以基于所对应的一个或搜索空间集发送PDCCH。与同一个网络设备对应的一个或多个搜索空间集可以定义为一个搜索空间集组。即，每个网络设备可以对应一个搜索空间集组。
当终端设备确定盲检测到该第一PDCCH的搜索空间所属的搜索空间集和盲检测到该第二PDCCH的搜索空间所属的搜索空间集属于同一搜索空间集组时，可以认为该第一PDCCH的搜索空间集和第二PDCCH的搜索空间集属于同一搜索空间集组。
上文中已经结合控制资源集组详细说明了终端设备确定第一PDCCH和第二PDCCH是否满足预设条件的具体方法，终端设备基于搜索空间集组来确定第一PDCCH和第二PDCCH是否满足预设条件的具体方法与之相似，为了简洁，这里不再赘述。
此外，网络设备与搜索空间集组的对应关系可以预先协商确定。例如，网络设备之间可以通过回程链路协商和配置网络设备与搜索空间集组的对应关系。本申请对于网络设备与搜索空间集组的对应关系以及该对应关系的配置方式不做限定。
可选地，当第一PDCCH中指示的DMRS的端口和第二PDCCH中指示的DMRS的端口属于同一DMRS端口组时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
换句话说，当第一PDCCH调度的第一PDSCH的DMRS的端口和第二PDCCH调度的第二PDSCH的DMRS的端口属于同一DMRS端口组时，终端设备可以确定该第一PDCCH和第二PDCCH满足预设条件。
两个或更多网络设备在为同一终端设备服务时，若使用相同的端口，相互间可能会造成干扰；若使用同一端口组中的端口，可能会造成终端设备信道估计不准确，而导致信号接收质量下降。为了避免不同的网络设备在为同一个终端设备服务时使用相同的端口，通常可以限制不同的网络设备，或不同的网络设备组，使用不同端口组中的端口为同一终端设备服务。应理解，每个网络设备并不限于使用一个端口组。
不同端口组中的端口完全不同，或者说，不同端口组中的端口之间没有重复。每个端口组中所包含的端口可以是预先定义的，如协议定义，也可以是由网络设备指示的，如网络设备可以通过高层信令向终端设备通知各端口组中的端口。
网络设备可以在PDCCH中指示所调度的PDSCH的DMRS的端口。终端设备可以根据接收到的第一PDCCH确定用于解调第一PDSCH的DMRS的端口，并可以根据接收到的第二PDCCH确定用于解调第二PDSCH的DMRS的端口。
若终端设备确定第一PDCCH指示的DMRS的端口和第二PDCCH指示的DMRS的 端口属于同一DMRS端口组，则可以确定第一网络设备和第二网络设备是同一网络设备，或者，第一网络设备和第二网络设备来自同一网络设备组。终端设备可以进一步根据第一PDCCH和第二PDCCH重新确定第一资源。
若终端设备确定该第一PDCCH指示的DMRS的端口和第二PDCCH指示的DMRS的端口属于不同的DMRS端口组，则可以确定第一网络设备和第二网络设备为不同的网络设备，或者，第一网络设备和第二网络设备属于不同的网络设备组。终端设备可以直接在第一PDCCH调度的第一PDSCH上接收第一数据。
可选地，当第一PDCCH与第二PDCCH来自同一小区时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
换句话说，当第一PDCCH和第二PDCCH满足预设条件时，该第一PDCCH与第二PDCCH可以来自同一小区；或者说，发送该第一PDCCH的第一网络设备和发送该第二PDCCH的第二网络设备可以来自同一小区。
在NR协议中，服务小区配置(serving cell configuration)可用于为终端设备配置服务小区。该服务小区配置中可以包括一组带宽部分下行专用参数(BWP downlink dedicated，BWP DL Dedicated)。该BWP下行专用参数中可以包括一个PDCCH配置。换句话说，一个小区可对应于一个PDCCH配置。
终端设备在接收到第一PDCCH和第二PDCCH时，可以根据所基于的PDCCH配置是否相同来判断该第一网络设备和第二网络设备是否来自同一小区。而同一小区中的两个网络设备之间可以是理想回程的。因此，若终端设备确定该第一PDCCH和第二PDCCH来自同一小区，可以确定第一网络设备和第二网络设备是同一网络设备，或者，第一网络设备和第二网络设备属于同一网络设备组。终端设备可以进一步根据第一PDCCH和第二PDCCH重新确定第一资源。
相反，若终端设备确定该第一PDCCH和第二PDCCH来自不同的小区，则可以确定第一网络设备和第二网络设备为不同的网络设备，或者，第一网络设备和第二网络设备属于不同的网络设备组。终端设备可以直接在第一PDCCH调度的第一PDSCH上接收第一数据。可选地，当第一PDCCH与第二PDCCH来自同一小区组时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
一个小区组可以包括一个或多个小区。同一小区组中的网络设备之间可以是理想回程链路的。因此，终端设备在接收到第一PDCCH和第二PDCCH时，可以根据接收PDCCH所基于的PDCCH配置来确定所来自的小区，并可进一步确定第一PDCCH所来自的小区和第二PDCCH所来自的小区是否属于同一小区组。
若终端设备确定该第一PDCCH和第二PDCCH来自同一小区组，则可以确定第一网络设备和第二网络设备是同一网络设备，或者，第一网络设备和第二网络设备属于同一网络设备组。终端设备可以进一步根据第一PDCCH和第二PDCCH重新确定第一资源。
若终端设备确定该第一PDCCH和第二PDCCH来自不同的小区组，则可以确定第一网络设备和第二网络设备为不同的网络设备，或者，第一网络设备和第二网络设备属于不同的网络设备组。终端设备可以直接在第一PDCCH调度的第一PDSCH上接收第一数据。可选地，当第一PDCCH和第二PDCCH均为主PDCCH时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
基于DCI中所包含的内容的不同，可以将DCI分为主DCI和辅DCI。与主DCI对应的，用于传输主DCI的PDCCH可以称为主PDCCH。与辅DCI对应地，用于传输辅DCI的PDCCH可以称为辅PDCCH。
其中，辅DCI所包含的信息可以是主DCI所包含的信息的子集。或者说，辅DCI仅包括部分主DCI包含的指示域，即，主DCI比辅DCI包含更多的指示信息。或者，主DCI与辅DCI也可以包含不同的信息。例如，主DCI可以是包含某一项或多项特定参数的DCI。其中，所述特定参数例如可以包括以下至少一项：载波指示(carrier indicator)、部分带宽指示(bandwidth part indicator)、速率匹配指示(rate matching indicator)、零功率信道状态信息参考信号触发(zero power channelstate information reference signal trigger,ZP CSI-RS trigger)；相应地，辅DCI可以为不包含上述任意一项特定参数的DCI。辅DCI可以包含以下至少一项的DCI：资源分配(resource allocation)、调制编码方式(modulation coding scheme，MCS)、冗余版本(redundancy version，RV)、新传数据指示(new data indicator，NDI)以及混合自动重传请求(hybrid automatic repeat request，HARQ)进程标识(HARQ process ID)。
协议可以预先定义主DCI和辅DCI中包含的具体内容。当终端设备盲检测到的PDCCH包含的内容属于主DCI所包含的内容的范畴时，可以认为该PDCCH为主PDCCH。
在一种实现方式中，紧急业务通过主站发送。也就是通过主PDCCH调度，并通过主PDCCH调度的PDSCH传输。因此，当终端设备接收到的第一PDCCH和第二PDCCH均为主PDCCH时，可以确定该第一PDCCH和第二PDCCH来自同一网络设备，或，同一网络设备组。且该第二PDCCH用于紧急业务的调度。
可选地，当第一PDCCH调度的第一PDSCH的接收波束与第二PDCCH调度的第二PDSCH的接收波束为同一接收波束组时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
在本实施例中，可以对终端设备的接收波束进行分组，通过同一接收波束组中的接收波束来接收来自同一网络设备或同一网络设备组的PDCCH和PDSCH。
如前所述，网络设备可以在DCI中携带TCI，通过TCI指示被选择的TCI状态，每个TCI状态中可以包含用于确定用于接收PDSCH的接收波束的参考信号资源的标识。换句话说，参考信号资源的标识与接收波束具有对应关系。因此，在一种实现方式中，对接收波束分组也就可以通过对参考信号资源分组来实现。
具体地，网络设备可以通过信令指示多个参考信号资源组，每个参考信号资源组包括一个或多个参考信号资源。终端设备可以根据TCI状态中所指示的参考信号资源的标识确定接收波束，并通过该参考信号资源所对应的接收波束接收来自网络设备的PDCCH。当终端设备用于接收第一PDCCH的接收波束和用于接收第二PDCCH的接收波束属于同一接收波束组，该第一PDCCH传输的第一DCI中的TCI所指示的TCI状态中所包含的参考信号资源和第二PDCCH传输的第二DCI中的TCI所指示的TCI状态中所包含的参考信号资源也属于同一个参考信号资源组。此时，可以认为第一网络设备和第二网络设备为同一网络设备，或者，第一网络设备和第二网络设备属于同一网络设备组。当终端设备用于接收第一PDCCH的接收波束和用于接收第二PDCCH的接收波束属于不同的接收波束组，第一DCI中的的TCI所指示的TCI状态中所包含的参考信号资源和第二DCI中的TCI 所指示的TCI状态中所包含的参考信号资源属于不同的参考信号资源组。此时，可以认为第一网络设备和第二网络设备为不同的网络设备，或者，第一网络设备和第二网络设备属于不同的网络设备组。
通常情况下，同一接收波束组中的接收波束可以配置在同一天线面板(panel)。因此，在另一种实现方式中，可以在现有的TCI状态中增加指示字段，来区分不同的接收波束组。
例如，TCI状态中可以增加与天线面板相关的指示字段，如“panel 1”表示天线面板1，“panel 2”表示天线面板2。网络设备可以通过TCI指示可用的TCI状态，进而指示终端设备采用哪个天线面板来接收PDSCH。当第一TCI中的TCI所指示的TCI状态中所指示的天线面板与第二DCI中的TCI所指示的TCI状态所指示的天线面板为同一天线面板时，可以认为该第一网络设备和第二网络设备为同一网络设备。当第一TCI中的TCI所指示的TCI状态中所指示的天线面板与第二DCI中的TCI所指示的TCI状态所指示的天线面板为不同的天线面板时，可以认为该第一网络设备和第二网络设备为不同的网络设备。
应理解，与天线面板的相关的指示字段并不限于以上示例，本申请对于天线面板相关的指示字段并不作限定。还应理解，通过参考信号资源和天线面板来区分不同的接收波束组，进而确定第一PDCCH和第二PDCCH是否来自同一网络设备或同一网络设备组，仅为用于确定第一网络设备和第二网络设备是否为同一网络设备或同一网络设备组的一种可能的实现方式，而不应对本申请构成任何限定。本申请并不排除采用其他的方式来区分不同的接收波束组的可能。
应理解，上述“第一PDCCH调度的第一PDSCH的接收波束与第二PDCCH调度的第二PDSCH的接收波束为同一接收波束组”可以认为与“第一PDSCH的发射波束与第二PDSCH的发射波束为同一发射波束组”是等价的。由于参考信号资源标识与接收波束具有关系，同时也与发射波束具有对应关系，因此，当参考信号资源标识一定时，所对应的接收波束和发射波束也是可以确定的。当TCI中指示的参考信号资源标识所指示的参考信号资源属于同一参考信号资源组，则可以认为所对应的发射波束也属于同一发射波束组。当TCI中指示的参考信号资源标识所对应的接收波束属于同一接收波束组，则可以认为TCI中指示的参考信号资源标识所对应的发射波束也属于同一发射波束组。
可选地，当第一PDCCH的接收波束与第二PDCCH的接收波束为同一接收波束组时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
上文中已经详细说明了接收波束组以及确定是否为同一接收波束组的方法。为了简洁，这里不再赘述。
网络设备在发送PDCCH时，可以通过媒体接入控制(media access control，MAC)控制元素(control element，CE)中激活一个TCI状态。该TCI状态中可以包含用于确定用于接收PDCCH的接收波束的参考信号资源标识。
终端设备可以根据MAC CE中激活的TCI状态确定用于接收PDCCH的接收波束。
当第一PDCCH和第二PDCCH的接收波束属于同一接收波束组时，可以认为该第一网络设备和第二网络设备为同一网络设备，或者，第一网络设备和第二网络设备属于同一网络设备组。
应理解，“第一PDCCH的接收波束与第二PDCCH的接收波束为同一接收波束组”可以认为与“第一PDCCH的发射波束与第二PDCCH的发射波束为同一发射波束组”是等 价的。上文中已经详细说明了发射波束组和接收波束组的对应关系，为了简洁，这里不再赘述。
可选地，当第一PDCCH调度的第一PDSCH的PDSCH配置与第二PDCCH调度的第二PDSCH的PDSCH配置相同时，终端设备确定该第一PDCCH和第二PDCCH满足预设条件。
网络设备可以在通过DCI调度PDSCH时，在DCI中指示所调度的PDSCH的PDSCH配置。当终端设备可以根据第一PDCCH确定第一PDSCH的PDSCH配置，并可以根据第二PDCCH确定第二PDSCH的PDSCH配置。若第一PDSCH的PDSCH配置与第二PDSCH的PDSCH配置相同，则可以认为该第一PDCCH和第二PDCCH满足预设条件。终端设备可以根据第一PDCCH和第二PDCCH重新确定第一资源。若第一PDSCH的PDSCH配置与第二PDSCH的PDSCH配置不同，则终端设备可以确定第一PDCCH和第二PDCCH不满足预设条件。终端设备直接在第一PDCCH调度的第一PDSCH上接收第一数据景。
上文中列举了多种用于确定第一PDCCH和第二PDCCH是否满足预设条件的实现方式，但应理解，这不应对本申请构成任何限定。例如，该预设条件并不仅限于上文所列举，例如，可以将上文列举的两项或更多项结合使用，如第一PDCCH的PDCCH配置与第二PDCCH的PDCCH配置相同且第一PDCCH调度的第一PDSCH的接收波束与第二PDCCH调度的第二PDSCH的接收波束为同一接收波束组等，为了简洁，这里一一列举。该预设条件还可以包括其他的条件，本领域的技术人员基于相同的构思，对上文列举的条件进行替换或变形，可以得到更多可能的条件。这些条件均应落入本申请的保护范围内。
终端设备在确定第一PDCCH和第二PDCCH满足预设条件后，便可以在步骤240中确定根据第一PDCCH和第二PDCCH确定第一资源。
终端设备在接收到第一PDCCH和第二PDCCH后，并不能确定哪个PDCCH是第一PDCCH，哪个PDCCH是第二PDCCH。在本实施例中，终端设备可以根据预设规则确定第一PDCCH和第二PDCCH，进而确定第一资源。
可选地，第一PDCCH在时域上位于第二PDCCH之前，或者说第一PDCCH的起始符号早于第二PDCCH起始符号。
也就是说，终端设备可以根据接收到PDCCH的时间先后顺序，判断哪个是第一PDCCH，哪个是第二PDCCH，进而根据第一PDCCH和第二PDCCH确定第一资源。
第一PDCCH在时域上位于第二PDCCH之前，可以是指终端设备在第二PDCCH之前接收到第一PDCCH。
可选地，第一PDSCH的时域资源位置的映射类型为类型A；第二PDSCH的时域资源位置的映射类型为类型B。
网络设备在调度PDSCH时，可以通过PDCCH中的DCI指示所调度的PDSCH的时域资源位置的映射类型。当NR协议中，该映射类型可以包括类型A和类型B。在某些实现方式中，类型A可适用于对可靠性和时延要求较低的业务，例如可以适用于上文所述的非紧急业务，如eMBB业务；类型B可适用于对可靠性和时延要求较高的业务，例如可以适用于上文所述的紧急业务，如URLLC业务。有关类型A和类型B的具体内容可以参考现有技术，例如，可以参考NR协议TS38.211和TS38.214中的相关描述。为了简洁， 这里省略对类型A和类型B的具体映射方式的详细说明。
在本实施例中，可选地，第一PDSCH用于传输第一数据，第二PDSCH用于传输第二数据，且第一数据可以为非紧急业务的数据；第二数据可以为紧急业务的数据。
终端设备可以根据接收到的PDCCH中所指示的PDSCH的时域资源位置的映射类型，确定哪个PDCCH是用于调度和传输第一数据的第一PDCCH，哪个PDCCH是用于调度和传输第二数据的第二PDCCH，进而根据第一PDCCH和第二PDCCH确定第一资源。
可选地，第一PDSCH的下行DMRS的起始符号为该第一PDSCH所在时隙的第2个或第3个符号；第二PDCCH调度的第二PDSCH的下行DMRS的起始符号为第二PDSCH的首个符号。
下行DMRS在时域上映射的位置与PDSCH的时域资源位置的映射类型相关。例如，当PDSCH的时域资源位置的映射类型为类型A时，下行DMRS的起始符号可以为该PDSCH所在时隙的第2个或第3个符号；当PDSCH的时域资源位置的映射类型为类型B时，下行DMRS的起始符号可以为该PDSCH的首个符号。
因此，终端设备可以根据PDCCH中所指示的DMRS的时域位置来确定所接收到的PDCCH调度的PDSCH的时域资源位置的映射类型，进而可以确定哪个PDCCH是用于调度和传输第一数据的第一PDCCH，哪个PDCCH是用于调度和传输第二数据的第二PDCCH，从而根据第一PDCCH和第二PDCCH确定第一资源。
基于上文所列举的规则，终端设备可以确定第一PDCCH和第二PDCCH，进而根据第一PDCCH和第二PDCCH确定第一资源。
应理解，终端设备确定第一PDCCH和第二PDCCH的方法并不仅限于上文所述，为了简洁，本申请中不再一一列举。基于相同的构思，本领域的技术人员可能想到更多可能的实现方式。
因此，本申请实施例基于第一PDCCH和第二PDCCH来确定用于传输第一数据的第一资源，在第一PDCCH所调度的第一PDSCH与第二PDCCH或第二PDCCH所调度的第二PDSCH发送资源重叠的情况下，优先接收第二PDCCH，并可以根据业务类型的优先级，在第二数据优先级较高的情况下，优先接收第二PDSCH上传输的第二数据，以保证第二数据的可靠传输。
相对而言，如果终端设备在第一PDSCH与第二PDCCH发生资源重叠，终端设备在接收第一PDSCH与第二PDCCH时，第一PDSCH和第二PDCCH之间可能会相互干扰，导致接收质量下降，甚至可能导致解码失败。如果第一PDSCH和第二PDSCH发生资源重叠，基于同样的原因，第一PDSCH和第二PDSCH的接收质量下降，甚至可能导致解码失败。因此，数据传输性能下降。
即便网络设备为保证第二PDSCH中紧急业务的性能，在与第二PDSCH和/或第二PDCCH重叠的资源上不发送第一PDSCH，但由于终端设备预先并不知道，仍然可能在第一PDSCH上接收数据，导致终端设备仍然无法成功获取第一PDSCH和第二PDSCH。
而在本申请实施例中，终端设备可以基于第一PDCCH和第二PDCCH来确定用于传输第一数据的第一资源，以将与第二PDCCH和/或第二PDSCH重叠的资源从第一PDSCH中除去，既可以避免相互干扰带来的数据传输质量下降问题，保证了紧急数据的可靠性，有利于提高数据传输性能。
此外，终端设备可以进一步根据预设条件来判断是否可以同时接收第一PDSCH和第二PDSCH，充分利用资源，例如可通过空分复用等方式传输不同的数据。有利于提高资源利用率，提高系统性能。
应理解，上文仅为便于理解，以第一PDCCH和第二PDCCH以及第一PDCCH调度的第一PDSCH和第二PDCCH调度的第二PDSCH为例，详细说明了发送和接收数据的方法。但这不应对本申请构成任何限定。终端设备可以接收到更多的PDCCH和PDSCH。终端设备在接收到多个PDCCH的调度时，仍然可以基于上文所述的方法来确定资源并接收数据。本申请对于终端设备接收到的PDCCH的数量和PDSCH的数量不作限定，并且，本申请对于为终端设备服务的网络设备的数量也不作限定。
以上，结合图2至图5详细说明了本申请实施例提供的方法。以下，结合图6至图8详细说明本申请实施例提供的通信装置。
图6是本申请实施例提供的通信装置的示意性框图。如图所示，该通信装置1000可以包括通信单元1100和处理单元1200。
在一种可能的设计中，该通信装置1000可对应于上文方法实施例中的终端设备，例如，可以为终端设备，或者配置于终端设备中的芯片。
具体地，该通信装置1000可对应于根据本申请实施例的方法200中的终端设备，该通信装置1000可以包括用于执行图2中的方法200中的终端设备执行的方法的单元。并且，该通信装置1000中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200的相应流程。
其中，当该通信装置1000用于执行图2中的方法200时，通信单元1100可用于执行方法200中的步骤210、步骤220、步骤250和步骤260，处理单元1200可用于执行方法200中的步骤230。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1000为终端设备时，该通信装置1000中的通信单元1100可对应于图7中示出的终端设备2000中的收发器2020，该通信装置1000中的处理单元1200可对应于图7中示出的终端设备2000中的处理器2010。
还应理解，该通信装置1000为配置于终端设备中的芯片时，该通信装置1000中的通信单元1100可以为输入/输出接口。
在另一种可能的设计中，该通信装置1000可对应于上文方法实施例中的网络设备，例如，可以为网络设备，或者配置于网络设备中的芯片。
在另一种可能的设计中，该通信装置500可对应于上文方法实施例中的网络设备，例如，可以为网络设备，或者配置于网络设备中的芯片。
具体地，该通信装置1000可对应于根据本申请实施例的方法200中的第一网络设备，该通信装置1000可以包括用于执行图2的方法200中的网络设备执行的方法的单元。并且，该通信装置1000中的各单元和上述其他操作和/或功能分别为了实现图2中的方法200的相应流程。
其中，当该通信装置1000用于执行图2中的方法200时，通信单元1100可用于执行方法200中的步骤210和步骤250，或者，可用于执行方法200中的步骤210、步骤220、 步骤240和步骤250，处理单元1200可用于执行方法200中的步骤240。
应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
还应理解，该通信装置1000为网络设备时，该通信装置1000中的通信单元为可对应于图8中示出的网络设备3000中的收发器3200，该通信装置1000中的处理单元1200可对应于图8中示出的网络设备3000中的处理器3100。
还应理解，该通信装置1000为配置于网络设备中的芯片时，该通信装置1000中的通信单元1100可以为输入/输出接口。
图7是本申请实施例提供的终端设备2000的结构示意图。该终端设备2000可应用于如图1所示的系统中，执行上述方法实施例中终端设备的功能。
如图所示，该终端设备2000包括处理器2010和收发器2020。可选地，该终端设备2000还包括存储器2030。其中，处理器2010、收发器2002和存储器2030之间可以通过内部连接通路互相通信，传递控制和/或数据信号，该存储器2030用于存储计算机程序，该处理器2010用于从该存储器2030中调用并运行该计算机程序，以控制该收发器2020收发信号。可选地，终端设备2000还可以包括天线2040，用于将收发器2020输出的上行数据或上行控制信令通过无线信号发送出去。
上述处理器2010可以和存储器2030可以合成一个处理装置，处理器2010用于执行存储器2030中存储的程序代码来实现上述功能。具体实现时，该存储器2030也可以集成在处理器2010中，或者独立于处理器2010。该处理器2010可以与图6中的处理单元对应。
上述收发器2020可以与图6中的通信单元对应，也可以称为收发单元。收发器2020可以包括接收器(或称接收机、接收电路)和发射器(或称发射机、发射电路)。其中，接收器用于接收信号，发射器用于发射信号。
应理解，图7所示的终端设备2000能够实现图2所示方法实施例中涉及终端设备的各个过程。终端设备2000中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详述描述。
上述处理器2010可以用于执行前面方法实施例中描述的由终端设备内部实现的动作，而收发器2020可以用于执行前面方法实施例中描述的终端设备向网络设备发送或从网络设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
可选地，上述终端设备2000还可以包括电源2050，用于给终端设备中的各种器件或电路提供电源。
除此之外，为了使得终端设备的功能更加完善，该终端设备2000还可以包括输入单元2060、显示单元2070、音频电路2080、摄像头2090和传感器2100等中的一个或多个，所述音频电路还可以包括扬声器2082、麦克风2084等。
图8是本申请实施例提供的网络设备的结构示意图，例如可以为基站的结构示意图。该基站3000可应用于如图1所示的系统中，执行上述方法实施例中网络设备的功能。
如图所示，该基站3000可以包括一个或多个射频单元，如远端射频单元(remote radio unit，RRU)3100和一个或多个基带单元(baseband unit，BBU)(也可称为数字单元， digital unit，DU)3200。所述RRU 3100可以称为收发单元，与图6中的通信单元1200对应。可选地，该收发单元3100还可以称为收发机、收发电路、或者收发器等等，其可以包括至少一个天线3101和射频单元3102。可选地，收发单元3100可以包括接收单元和发送单元，接收单元可以对应于接收器(或称接收机、接收电路)，发送单元可以对应于发射器(或称发射机、发射电路)。所述RRU 3100部分主要用于射频信号的收发以及射频信号与基带信号的转换，例如用于向终端设备发送指示信息。所述BBU 3200部分主要用于进行基带处理，对基站进行控制等。所述RRU 3100与BBU 3200可以是物理上设置在一起，也可以物理上分离设置的，即分布式基站。
所述BBU 3200为基站的控制中心，也可以称为处理单元，可以与图6中的处理单元1100对应，主要用于完成基带处理功能，如信道编码，复用，调制，扩频等等。例如所述BBU(处理单元)可以用于控制基站执行上述方法实施例中关于网络设备的操作流程，例如，生成上述指示信息等。
在一个示例中，所述BBU 3200可以由一个或多个单板构成，多个单板可以共同支持单一接入制式的无线接入网(如LTE网)，也可以分别支持不同接入制式的无线接入网(如LTE网，5G网或其他网)。所述BBU 3200还包括存储器3201和处理器3202。所述存储器3201用以存储必要的指令和数据。所述处理器3202用于控制基站进行必要的动作，例如用于控制基站执行上述方法实施例中关于网络设备的操作流程。所述存储器3201和处理器3202可以服务于一个或多个单板。也就是说，可以每个单板上单独设置存储器和处理器。也可以是多个单板共用相同的存储器和处理器。此外每个单板上还可以设置有必要的电路。
应理解，图8所示的基站3000能够实现图2方法实施例中涉及网络设备的各个过程。基站3000中的各个模块的操作和/或功能，分别为了实现上述方法实施例中的相应流程。具体可参见上述方法实施例中的描述，为避免重复，此处适当省略详述描述。
上述BBU 3200可以用于执行前面方法实施例中描述的由网络设备内部实现的动作，而RRU 3100可以用于执行前面方法实施例中描述的网络设备向终端设备发送或从终端设备接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
本申请实施例还提供了一种处理装置，包括处理器和接口；所述处理器，用于执行上述方法实施例中的通信的方法。
应理解，上述处理装置可以是一个芯片。例如，该处理装置可以是现场可编程门阵列(field programmable gate array，FPGA)，可以是专用集成芯片(application specific integrated circuit，ASIC)，还可以是系统芯片(system on chip，SoC)，还可以是中央处理器(central processor unit，CPU)，还可以是网络处理器(network processor，NP)，还可以是数字信号处理电路(digital signal processor，DSP)，还可以是微控制器(micro controller unit，MCU)，还可以是可编程控制器(programmable logic device，PLD)或其他集成芯片。
在实现过程中，上述方法的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。结合本申请实施例所公开的方法的步骤可以直接体现为硬件处理器执行完成，或者用处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上 述方法的步骤。为避免重复，这里不再详细描述。
应注意，本申请实施例中的处理器可以是一种集成电路芯片，具有信号的处理能力。在实现过程中，上述方法实施例的各步骤可以通过处理器中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器可以是通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)、现场可编程门阵列(FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成，或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器，闪存、只读存储器，可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器，处理器读取存储器中的信息，结合其硬件完成上述方法的步骤。
可以理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的RAM可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(dynamic RAM，DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。应注意，本文描述的系统和方法的存储器旨在包括但不限于这些和任意其它适合类型的存储器。
根据本申请实施例提供的方法，本申请还提供一种计算机程序产品，该计算机程序产品包括：计算机程序代码，当该计算机程序代码在计算机上运行时，使得该计算机执行图2所示实施例中任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种计算机可读介质，该计算机可读介质存储有程序代码，当该程序代码在计算机上运行时，使得该计算机执行图2所示实施例中任意一个实施例的方法。
根据本申请实施例提供的方法，本申请还提供一种系统，其包括前述的一个或多个终端设备以及一个或多个网络设备。
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指令。在计算机上加载和执行所述计算机指令时，全部或部分地产生按照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、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数 字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。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包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disc，SSD))等。
上述各个装置实施例中网络设备与终端设备和方法实施例中的网络设备或终端设备完全对应，由相应的模块或单元执行相应的步骤，例如通信单元(收发器)执行方法实施例中接收或发送的步骤，除发送、接收外的其它步骤可以由处理单元(处理器)执行。具体单元的功能可以参考相应的方法实施例。其中，处理器可以为一个或多个。
在本说明书中使用的术语“部件”、“模块”、“系统”等用于表示计算机相关的实体、硬件、固件、硬件和软件的组合、软件、或执行中的软件。例如，部件可以是但不限于，在处理器上运行的进程、处理器、对象、可执行文件、执行线程、程序和/或计算机。通过图示，在计算设备上运行的应用和计算设备都可以是部件。一个或多个部件可驻留在进程和/或执行线程中，部件可位于一个计算机上和/或分布在2个或更多个计算机之间。此外，这些部件可从在上面存储有各种数据结构的各种计算机可读介质执行。部件可例如根据具有一个或多个数据分组(例如来自与本地系统、分布式系统和/或网络间的另一部件交互的二个部件的数据，例如通过信号与其它系统交互的互联网)的信号通过本地和/或远程进程来通信。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各种说明性逻辑块(illustrative logical block)和步骤(step)，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，各功能单元的功能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指令(程序)。在计算机上加载和执行所述计算机程序指令(程序)时，全部或部分地产生按照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、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。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包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (46)

  1. 一种接收数据的方法，其特征在于，包括：
    接收第一物理下行控制信道PDCCH，所述第一PDCCH用于调度第一物理下行共享信道PDSCH，所述第一PDSCH用于传输第一数据；
    接收第二PDCCH；
    基于所述第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，所述第一资源为所述第一PDSCH的部分或全部资源；
    在所述第一资源上接收所述第一数据。
  2. 如权利要求1所述的方法，其特征在于，在所述第二PDCCH与所述第一PDSCH发生资源重叠的情况下，所述基于第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，包括：
    将所述第一PDCCH调度的所述第一PDSCH中除所述第二PDCCH之外的资源确定为所述第一资源。
  3. 如权利要求1所述的方法，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDSCH与所述第一PDSCH发生资源重叠的情况下，所述基于第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，包括：
    将所述第一PDSCH中除所述第二PDSCH之外的资源确定为所述第一资源。
  4. 如权利要求1所述的方法，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDCCH和所述第二PDSCH均与所述第一PDSCH发生资源重叠的情况下，所述基于第一PDSCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，包括：
    将所述第一PDCCH调度的所述第一PDSCH中除所述第二PDCCH和所述第二PDSCH之外的资源确定为所述第一资源。
  5. 如权利要求1所述的方法，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDCCH和所述第二PDSCH均未与所述第一PDSCH发生资源重叠的情况下，所述基于第一PDSCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，包括：
    将所述第一PDCCH调度的所述第一PDSCH确定为所述第一资源。
  6. 如权利要求1至5中任一项所述的方法，其特征在于，所述基于所述第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，包括：
    在所述第一PDCCH与所述第二PDCCH满足预设条件的情况下，根据所述第一PDSCH与所述第二PDCCH确定用于传输所述第一数据的所述第一资源。
  7. 如权利要求1所述的方法，其特征在于，所述基于所述第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，包括：
    在所述第一PDCCH与所述第二PDCCH不满足预设条件的情况下，根据所述第一PDCCH确定用于传输所述第一数据的所述第一资源。
  8. 如权利要求6或7所述的方法，其特征在于，所述预设条件包括以下一项或多项：
    所述第一PDCCH的PDCCH配置与所述第二PDCCH的PDCCH配置相同；
    所述第一PDCCH的控制资源集和所述第二PDCCH的控制资源集属于同一控制资源 集；
    所述第一PDCCH的控制资源集和所述第二PDCCH的控制资源集属于同一控制资源集组；
    所述第一PDCCH的搜索空间集与所述第二PDCCH的搜索空间集属于同一搜索空间集；
    所述第一PDCCH的搜索空间集与所述第二PDCCH的搜索空间集属于同一搜索空间集组；
    所述第一PDCCH中指示的解调参考信号DMRS的端口和第二PDCCH中指示的DMRS的端口属于同一DMRS端口组；
    所述第一PDCCH和所述第二PDCCH来自同一小区；
    所述第一PDCCH和所述第二PDCCH来自同一小区组；
    所述第一PDCCH和所述第二PDCCH均为主PDCCH；
    所述第一PDCCH调度的所述第一PDSCH的接收波束与所述第二PDCCH调度的第二PDSCH的接收波束为同一接收波束组；
    所述第一PDCCH的接收波束与所述第二PDCCH的接收波束为同一接收波束组；以及
    所述第一PDCCH调度的所述第一PDSCH的PDSCH配置与所述第二PDCCH调度的第二PDSCH的PDSCH配置相同。
  9. 如权利要求1至8中任一项所述的方法，其特征在于，所述第一PDCCH在时域上位于所述第二PDCCH之前。
  10. 如权利要求1至8中任一项所述的方法，其特征在于，所述第一PDSCH的时域资源位置的映射类型为类型A；所述第二PDCCH调度的第二PDSCH的时域资源位置的映射类型为类型B。
  11. 如权利要求1至8中任一项所述的方法，其特征在于，所述第一PDSCH的下行解调参考信号DMRS的起始符号为所述第一PDSCH所在时隙的第2个或第3个符号；所述第二PDCCH调度的第二PDSCH的下行DMRS的起始符号为所述第二PDSCH的首个符号。
  12. 一种发送数据的方法，其特征在于，包括：
    发送第一物理下行控制信道PDCCH，所述第一PDCCH用于指示调度第一物理下行共享信道PDSCH，所述第一PDSCH用于传输第一数据；
    发送第二PDCCH；
    基于所述第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，所述第一资源为所述第一PDSCH的部分或全部资源；
    在所述第一资源上发送所述第一数据。
  13. 一种通信装置，其特征在于，包括：通信单元，用于接收第一物理下行控制信道PDCCH，所述第一PDCCH用于调度第一物理下行共享信道PDSCH，所述第一PDSCH用于传输第一数据；还用于接收第二PDCCH；
    处理单元，用于基于所述第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，所述第一资源为所述第一PDSCH的部分或全部资源；
    所述通信单元还用于在所述第一资源上接收所述第一数据。
  14. 如权利要求13所述的装置，其特征在于，在所述第二PDCCH与所述第一PDSCH发生资源重叠的情况下，所述处理单元具体用于，将所述第一PDCCH调度的所述第一PDSCH中除所述第二PDCCH之外的资源确定为所述第一资源。
  15. 如权利要求13所述的装置，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDSCH与所述第一PDSCH发生资源重叠的情况下，所述处理单元具体用于，将所述第一PDSCH中除所述第二PDSCH之外的资源确定为所述第一资源。
  16. 如权利要求13所述的装置，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDCCH和所述第二PDSCH均与所述第一PDSCH发生资源重叠的情况下，所述处理单元具体用于，将所述第一PDCCH调度的所述第一PDSCH中除所述第二PDCCH和所述第二PDSCH之外的资源确定为所述第一资源。
  17. 如权利要求13所述的装置，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDCCH和所述第二PDSCH均未与所述第一PDSCH发生资源重叠的情况下，所述处理单元具体用于，将所述第一PDCCH调度的所述第一PDSCH确定为所述第一资源。
  18. 如权利要求13至17中任一项所述的装置，其特征在于，所述处理单元具体用于，在第一PDCCH与所述第二PDCCH满足预设条件的情况下，根据所述第一PDSCH与所述第二PDCCH确定用于传输所述第一数据的所述第一资源。
  19. 如权利要求13所述的装置，其特征在于，所述处理单元具体用于，在所述第一PDCCH与所述第二PDCCH不满足预设条件的情况下，根据所述第一PDCCH确定用于传输所述第一数据的所述第一资源。
  20. 如权利要求18或19所述的装置，其特征在于，所述预设条件包括以下一项或多项：
    所述第一PDCCH的PDCCH配置与所述第二PDCCH的PDCCH配置相同；
    所述第一PDCCH的控制资源集和所述第二PDCCH的控制资源集属于同一控制资源集；
    所述第一PDCCH的控制资源集和所述第二PDCCH的控制资源集属于同一控制资源集组；
    所述第一PDCCH的搜索空间集与所述第二PDCCH的搜索空间集属于同一搜索空间集；
    所述第一PDCCH的搜索空间集与所述第二PDCCH的搜索空间集属于同一搜索空间集组；
    所述第一PDCCH中指示的解调参考信号DMRS的端口和第二PDCCH中指示的DMRS的端口属于同一DMRS端口组；
    所述第一PDCCH和所述第二PDCCH来自同一小区；
    所述第一PDCCH和所述第二PDCCH来自同一小区组；
    所述第一PDCCH和所述第二PDCCH均为主PDCCH；
    所述第一PDCCH调度的所述第一PDSCH的接收波束与所述第二PDCCH调度的第二PDSCH的接收波束为同一接收波束组；
    所述第一PDCCH的接收波束与所述第二PDCCH的接收波束为同一接收波束组；以及
    所述第一PDCCH调度的所述第一PDSCH的PDSCH配置与所述第二PDCCH调度的第二PDSCH的PDSCH配置相同。
  21. 如权利要求13至20中任一项所述的装置，其特征在于，所述第一PDCCH在时域上位于所述第二PDCCH之前。
  22. 如权利要求13至20中任一项所述的装置，其特征在于，所述第一PDSCH的时域资源位置的映射类型为类型A；所述第二PDCCH调度的第二PDSCH的时域资源位置的映射类型为类型B。
  23. 如权利要求13至20中任一项所述的装置，其特征在于，所述第一PDSCH的下行解调参考信号DMRS的起始符号为所述第一PDSCH所在时隙的第2个或第3个符号；所述第二PDCCH调度的第二PDSCH的下行DMRS的起始符号为所述第二PDSCH的首个符号。
  24. 一种通信装置，其特征在于，包括：
    通信单元，用于发送第一物理下行控制信道PDCCH，所述第一PDCCH用于指示调度第一物理下行共享信道PDSCH，所述第一PDSCH用于传输第一数据；并用于发生第二PDCCH；
    处理单元，用于基于所述第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，所述第一资源为所述第一PDSCH的部分或全部资源；
    所述通信单元还用于在所述第一资源上发送所述第一数据。
  25. 一种通信装置，其特征在于，包括：
    收发器，用于接收第一物理下行控制信道PDCCH，所述第一PDCCH用于调度第一物理下行共享信道PDSCH，所述第一PDSCH用于传输第一数据；并用于接收第二PDCCH；
    处理器，用于基于所述第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，所述第一资源为所述第一PDSCH的部分或全部资源；
    所述收发器还用于在所述第一资源上接收所述第一数据。
  26. 如权利要求25所述的装置，其特征在于，在所述第二PDCCH与所述第一PDSCH发生资源重叠的情况下，所述处理器具体用于将所述第一PDCCH调度的所述第一PDSCH中除所述第二PDCCH之外的资源确定为所述第一资源。
  27. 如权利要求25所述的装置，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDSCH与所述第一PDSCH发生资源重叠的情况下，所述处理器具体用于将所述第一PDSCH中除所述第二PDSCH之外的资源确定为所述第一资源。
  28. 如权利要求25所述的装置，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDCCH和所述第二PDSCH均与所述第一PDSCH发生资源重叠的情况下，所述处理器具体用于将所述第一PDCCH调度的所述第一PDSCH中除所述第二PDCCH和所述第二PDSCH之外的资源确定为所述第一资源。
  29. 如权利要求25所述的装置，其特征在于，所述第二PDCCH用于调度第二PDSCH，在所述第二PDCCH和所述第二PDSCH均未与所述第一PDSCH发生资源重叠的情况下， 所述处理器具体用于将所述第一PDCCH调度的所述第一PDSCH确定为所述第一资源。
  30. 如权利要求25至29中任一项所述的装置，其特征在于，所述处理器具体用于在所述第一PDCCH与所述第二PDCCH满足预设条件的情况下，根据所述第一PDSCH与所述第二PDCCH确定用于传输所述第一数据的所述第一资源。
  31. 如权利要求25所述的装置，其特征在于，所述处理器具体用于在所述第一PDCCH与所述第二PDCCH不满足预设条件的情况下，根据所述第一PDCCH确定用于传输所述第一数据的所述第一资源。
  32. 如权利要求30或31所述的装置，其特征在于，所述预设条件包括以下一项或多项：
    所述第一PDCCH的PDCCH配置与所述第二PDCCH的PDCCH配置相同；
    所述第一PDCCH的控制资源集和所述第二PDCCH的控制资源集属于同一控制资源集；
    所述第一PDCCH的控制资源集和所述第二PDCCH的控制资源集属于同一控制资源集组；
    所述第一PDCCH的搜索空间集与所述第二PDCCH的搜索空间集属于同一搜索空间集；
    所述第一PDCCH的搜索空间集与所述第二PDCCH的搜索空间集属于同一搜索空间集组；
    所述第一PDCCH中指示的解调参考信号DMRS的端口和第二PDCCH中指示的DMRS的端口属于同一DMRS端口组；
    所述第一PDCCH和所述第二PDCCH来自同一小区；
    所述第一PDCCH和所述第二PDCCH来自同一小区组；
    所述第一PDCCH和所述第二PDCCH均为主PDCCH；
    所述第一PDCCH调度的所述第一PDSCH的接收波束与所述第二PDCCH调度的第二PDSCH的接收波束为同一接收波束组；
    所述第一PDCCH的接收波束与所述第二PDCCH的接收波束为同一接收波束组；以及
    所述第一PDCCH调度的所述第一PDSCH的PDSCH配置与所述第二PDCCH调度的第二PDSCH的PDSCH配置相同。
  33. 如权利要求25至32中任一项所述的装置，其特征在于，所述第一PDCCH在时域上位于所述第二PDCCH之前。
  34. 如权利要求25至32中任一项所述的装置，其特征在于，所述第一PDSCH的时域资源位置的映射类型为类型A；所述第二PDCCH调度的第二PDSCH的时域资源位置的映射类型为类型B。
  35. 如权利要求25至32中任一项所述的装置，其特征在于，所述第一PDSCH的下行解调参考信号DMRS的起始符号为所述第一PDSCH所在时隙的第2个或第3个符号；所述第二PDCCH调度的第二PDSCH的下行DMRS的起始符号为所述第二PDSCH的首个符号。
  36. 一种通信装置，其特征在于，包括：
    收发器，用于发送第一物理下行控制信道PDCCH，所述第一PDCCH用于指示调度第一物理下行共享信道PDSCH，所述第一PDSCH用于传输第一数据；并用于发送第二PDCCH；
    处理器，用于基于所述第一PDCCH和所述第二PDCCH确定用于传输所述第一数据的第一资源，所述第一资源为所述第一PDSCH的部分或全部资源；
    所述收发器还用于在所述第一资源上发送所述第一数据。
  37. 一种通信装置，其特征在于，所述装置用于实现如权利要求1至11中任一项所述的方法。
  38. 一种通信装置，其特征在于，所述装置用于实现如权利要求12所述的方法。
  39. 一种处理装置，其特征在于，包括处理器，所述处理器用于执行存储器中存储的计算机程序，以使得所述装置实现如权利要求1至11中任一项所述的方法。
  40. 一种处理装置，其特征在于，包括处理器，所述处理器用于执行存储器中存储的计算机程序，以使得所述装置实现如权利要求12所述的方法。
  41. 一种处理装置，其特征在于，包括：
    存储器，用于存储计算机程序；
    处理器，用于从所述存储器调用并运行所述计算机程序，以使得所述装置实现如权利要求1至11中任一项所述的方法。
  42. 一种处理装置，其特征在于，包括：
    存储器，用于存储计算机程序；
    处理器，用于从所述存储器调用并运行所述计算机程序，以使得所述装置实现如权利要求12所述的方法。
  43. 一种计算机可读介质，其特征在于，包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求1至11中任一项所述的方法。
  44. 一种计算机可读介质，其特征在于，包括计算机程序，当所述计算机程序在计算机上运行时，使得所述计算机执行如权利要求12所述的方法。
  45. 一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得计算机执行如权利要求1至11中任一项所述的方法。
  46. 一种计算机程序产品，所述计算机程序产品包括计算机程序，当所述计算机程序在计算机上运行时，使得计算机执行如权利要求12所述的方法。
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