WO2018054263A1 - 发送或接收物理下行控制信道的方法和设备 - Google Patents

发送或接收物理下行控制信道的方法和设备 Download PDF

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Publication number
WO2018054263A1
WO2018054263A1 PCT/CN2017/101829 CN2017101829W WO2018054263A1 WO 2018054263 A1 WO2018054263 A1 WO 2018054263A1 CN 2017101829 W CN2017101829 W CN 2017101829W WO 2018054263 A1 WO2018054263 A1 WO 2018054263A1
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Prior art keywords
pdcch
subcarrier spacing
network device
information
resource
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PCT/CN2017/101829
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English (en)
French (fr)
Inventor
吕永霞
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华为技术有限公司
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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 KR1020197009546A priority Critical patent/KR102221648B1/ko
Priority to EP17852331.2A priority patent/EP3500020A4/en
Priority to BR112019005490A priority patent/BR112019005490A2/pt
Publication of WO2018054263A1 publication Critical patent/WO2018054263A1/zh
Priority to US16/358,101 priority patent/US10764884B2/en

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    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
    • H04L27/2655—Synchronisation arrangements
    • H04L27/2666—Acquisition of further OFDM parameters, e.g. bandwidth, subcarrier spacing, or guard interval length
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0092—Indication of how the channel is divided
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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
    • H04W72/20—Control channels or signalling for resource management

Definitions

  • the present application relates to the field of communications, and in particular, to a method and device for transmitting or receiving a physical downlink control channel (PDCCH) in the field of wireless communications.
  • PDCH physical downlink control channel
  • the traditional digital signal transmission is to transmit information through one channel at a time, which is a serial transmission method.
  • Multi-carrier technology adopts parallel transmission mode, which serially converts serial high-speed information stream into multiple parallel low-speed information streams, and then superimposes multiple parallel low-speed information streams to form multiple carriers.
  • a transmission system i.e., a multi-carrier technique, is a technique for transmitting high-speed data information using multiple carriers.
  • the carrier is a radio wave carrying a specific frequency of data.
  • Multi-carrier transmission technique has been widely used in communication systems, for example, in the fourth generation (the 4 th generation, 4G) and the Institute (institute of electrical and electronics engineers, IEEE) mobile communication system Electrical and Electronics Engineers 802.11 Series System .
  • the services supported by each system are relatively uniform, and each communication system supports only one subcarrier spacing waveform.
  • Fifth generation (the 5 th generation, 5G) mobile communication system the network device can support multiple services seed cell carrier spacing, so that the serving cell may use different subcarrier interval signals at different business service, under different deployment scenarios Terminal equipment with different needs.
  • the present application provides a method and a device for transmitting or receiving a PDCCH.
  • the network device addresses the interval of at least two subcarriers by transmitting at least two PDCCHs with different subcarrier spacings and indicating the at least two subcarrier spacings by using a preset manner or sending indication information. How to schedule or configure a terminal device that supports different subcarrier spacing.
  • a method for transmitting a PDCCH comprising: a network device mapping a first PDCCH to A control channel transmission units on a first time-frequency resource, and the network device mapping the second PDCCH in The B control channel transmission units on the second time-frequency resource, where A is a positive integer and A ⁇ 2, the B is a positive integer and B ⁇ 2, wherein the sub-carrier spacing of the first time-frequency resource is a first subcarrier spacing, a subcarrier spacing of the second time-frequency resource is a second subcarrier spacing, the first subcarrier spacing is different from the second subcarrier spacing, and each of the control channel transmission units includes N resource particles, the N resource particles are located in the same time domain symbol, the N is a positive integer and N ⁇ 2; the network device sends the first PDCCH and the second PDCCH.
  • the network device determines at least two subcarrier spacings, and at least two The PDCCHs are respectively mapped on time-frequency resources corresponding to the at least two sub-carriers, so that terminal devices supporting different sub-carrier intervals can be scheduled and/or configured.
  • the method further includes: sending, by the network device, first information that is carried in a system message or a broadcast message, where the first The information is used to indicate the first subcarrier interval and/or the second subcarrier interval, so that the terminal device that receives the first information receives the first PDCCH according to the first subcarrier interval or according to The second subcarrier interval receives the second PDCCH.
  • the network device indicates the at least one subcarrier interval by transmitting the first information carried in the broadcast message or the system message, so that the terminal device that receives the first information determines to receive the PDCCH according to the subcarrier interval indicated by the first information.
  • the first information is further used to indicate a location of a frequency domain resource and a location of a time domain resource that the first PDCCH and/or the second PDCCH can occupy.
  • the network device indicates, by using the first information, a location of the frequency domain resource and a location of the time domain resource that the at least one PDCCH can occupy, thereby reducing computation complexity of the PDCCH for monitoring, by the terminal device, for carrying and scheduling the common message.
  • the method further includes: the network device sending second information to the terminal device, where the second information is used to indicate the a first subcarrier spacing and the second subcarrier spacing, so that the terminal device receives the first PDCCH according to the first subcarrier interval and the second PDCCH according to the second subcarrier interval.
  • the network device sends the second information indicating the first subcarrier interval and the second subcarrier interval to the terminal device by using the high layer signaling, and the terminal device may receive the first PDCCH according to the first subcarrier interval and or according to the second subcarrier interval.
  • the second PDCCH is received, thereby supporting transmission or reception of a PDCCH of a communication system of a plurality of subcarrier intervals.
  • the second information is further used to indicate a location of a frequency domain resource and a location of a time domain resource that the first PDCCH and the second PDCCH can occupy.
  • the network device indicates, by using the second information, a location of the frequency domain resource that can be occupied by the at least one PDCCH and a location of the time domain resource, thereby reducing computational complexity of monitoring, by the terminal device, the PDCCH for carrying and scheduling the terminal device-specific message.
  • a second aspect a method for receiving a PDCCH, the method includes: receiving, by a terminal device, a first PDCCH sent by a network device on a first time-frequency resource, and receiving, by the terminal device, the second time-frequency resource a second PDCCH that is sent by the network device, where a subcarrier spacing of the first time-frequency resource is a first subcarrier spacing, and a subcarrier spacing of the second time-frequency resource is a second subcarrier spacing, the first The subcarrier spacing is different from the second subcarrier spacing, where the first PDCCH occupies A control channel transmission unit, the second PDCCH occupies B control channel transmission units, and the A is a positive integer and A ⁇ 2, The B is a positive integer and B ⁇ 2, each of the control channel transmission units includes N resource particles, the N resource particles are located in the same time domain symbol, the N is a positive integer and N ⁇ 2; The terminal device demodulates the first PDCCH and the second PDCCH.
  • the terminal device determines at least two subcarrier spacings, and receives at least two PDCCHs mapped on different time-frequency resources according to the at least two subcarrier intervals, thereby solving how the terminal device accesses the communication network in the communication system with multiple subcarrier spacings and How to reside in the communication network.
  • the method further includes: receiving, by the terminal device, second information sent by the network device, where the second information is used by Indicating the first Subcarrier spacing and the second subcarrier spacing; the terminal device determines, according to the second information, that the first subcarrier spacing and the first subcarrier spacing receive the first PDCCH and according to the second The subcarrier interval receives the second PDCCH.
  • the terminal device determines the subcarrier spacing of the time-frequency resources that the at least two PDCCHs can occupy according to the indication information sent by the network device, thereby reducing the computational complexity of the PDCCH for monitoring the terminal device-specific information for the terminal device to be monitored and scheduled.
  • the second information is further used to indicate a location of the frequency domain resource and a location of the time domain resource that the first PDCCH can occupy, and a location and a time domain of the frequency domain resource that the second PDCCH can occupy. The location of the resource.
  • the terminal device determines, according to the indication information sent by the network device, the location of the frequency domain resource that the at least one PDCCH can occupy and the location of the time domain resource that can be occupied, thereby reducing the monitoring of the terminal device for carrying and scheduling the terminal device specific information.
  • the computational complexity of the PDCCH is not limited to the number of bits that can be occupied.
  • the present application provides a network device, where the network device can implement the functions performed by the network device in the method related to the foregoing first aspect, where the function can be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more corresponding units or modules of the above functions.
  • the network device includes a processor and a transceiver configured to support the network device to perform corresponding functions in the above methods.
  • the transceiver is used to support communication between the network device and other devices.
  • the network device can also include a memory for coupling with the processor that holds the necessary program instructions and data for the network device.
  • the application provides a terminal device, which can implement the functions performed by the terminal device in the method related to the second aspect, and the function can be implemented by using hardware or by executing corresponding software through hardware.
  • the hardware or software includes one or more corresponding units or modules of the above functions.
  • the terminal device includes a processor and a transceiver configured to support the terminal device to perform a corresponding function in the above method.
  • the transceiver is used to support communication between the terminal device and other network elements.
  • the terminal device can also include a memory for coupling with the processor that retains the program instructions and data necessary for the terminal device.
  • the present application provides a communication system, comprising the terminal device of the fourth aspect and the network device of the third aspect.
  • the present application provides a computer readable storage medium having stored therein computer program code, when executed by a processing unit or a processor, causing a network device to perform the first aspect The method described.
  • the present application provides a computer readable storage medium having stored therein computer program code, when executed by a processing unit or a processor, causing the terminal device to perform the second aspect The method described.
  • a communication chip in which instructions are stored which, when run on a network device, cause the communication chip to perform the method of the first aspect described above.
  • a communication chip in which an instruction is stored, which when executed on a terminal device causes the communication chip to perform the method of the second aspect described above.
  • a computer program product comprising: computer program code, when the computer program code is run by a communication unit or transceiver of a network device, and a processing unit or processor The network device performs the method of the first aspect above.
  • a computer program product comprising: computer program code, when the computer program code is run by a communication unit or transceiver of the terminal device, and a processing unit or processor, causing the terminal device.
  • FIG. 1 is a schematic architectural diagram of a communication system for transmitting or receiving a PDCCH to which the present application is applied;
  • FIG. 2 is a schematic flowchart of a method for transmitting a PDCCH provided by the present application
  • FIG. 3 is a schematic flowchart of a method for receiving a PDCCH provided by the present application
  • FIG. 4 is a schematic structural diagram of a possible network device provided by the present application.
  • FIG. 5 is a schematic structural diagram of another possible network device provided by the present application.
  • FIG. 6 is a schematic structural diagram of a possible terminal device provided by the present application.
  • FIG. 7 is a schematic structural diagram of another possible terminal device provided by the present application.
  • GSM global system of mobile communication
  • CDMA code division multiple access
  • WCDMA wideband code division multiple access
  • GPRS general packet radio service
  • LTE long term evolution
  • FDD frequency division duplex
  • TDD time division duplex
  • UMTS universal mobile telecommunication system
  • the terminal device may communicate with one or more core networks via a radio access network (RAN), and the user equipment may be referred to as an access terminal, a user equipment (UE), and a user.
  • RAN radio access network
  • the access terminal may be a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), with wireless communication.
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistant
  • the network device may be used to communicate with a terminal device, which may be a base transceiver station (BTS) in GSM or CDMA, or a base station (node B, NB) in WCDMA, or may be The evolved base station (evolved node B, eNB) in the LTE, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a base station (gNB) in a 5G network, etc., but the application is not limited, but For convenience of description, the following embodiments will be described by taking a base station eNB and a user equipment UE as an example.
  • BTS base transceiver station
  • node B, NB base station
  • gNB base station
  • FIG. 1 shows a schematic architectural diagram of a communication system 100 for transmitting or receiving a PDCCH to which the present application is applied.
  • the communication system 100 can include a network device 102, which can include one or more antenna groups, each of which can include one or more antennas.
  • one antenna group may include antennas 104 and 106
  • another antenna group may include antennas 108 and 110
  • an additional group may include antennas 112 and 114.
  • Two antennas are shown for each antenna group, but it should be understood that each antenna group may have more or fewer antennas.
  • Network device 102 may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexer, solution) Tuner, demultiplexer or antenna, etc.).
  • a transmitter chain and a receiver chain may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexer, solution) Tuner, demultiplexer or antenna, etc.).
  • Network device 102 can communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122.
  • the terminal device 116 is in communication with antennas 112 and 114, wherein the antennas 112 and 114 transmit information to the terminal device 116 over the forward link 118 and receive information from the terminal device 116 over the reverse link 120.
  • terminal device 122 is in communication with antennas 104 and 106, wherein antennas 104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.
  • the forward link 118 can utilize a different frequency band than the reverse link 120, and the forward link 124 can utilize a different frequency band than the reverse link 126; for example, in time-division double
  • the forward link 118 and the reverse link 120 can use a common frequency band, and the forward link 124 and the reverse link 126 can also use a common frequency band.
  • network device 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device.
  • the wireless communication transmitting device can encode the data for transmission.
  • the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in memory, etc.) a certain number of data bits to be transmitted over the channel to the wireless communication receiving device.
  • Such data bits may be included in a transport block (or multiple transport blocks) of data that may be segmented to produce multiple code blocks.
  • FIG. 2 shows a schematic flowchart of a method 200 for transmitting a PDCCH according to the present application. As shown in FIG. 2, the method includes:
  • the network device maps the first PDCCH to the A control channel transmission units on the first time-frequency resource, and the network device maps the second PDCCH to the B control channel transmission units on the second time-frequency resource, where A is a positive integer and A ⁇ 2, the B is a positive integer and B ⁇ 2, wherein the subcarrier spacing of the first time-frequency resource is a first subcarrier spacing, and the second time-frequency resource is The carrier spacing is a second subcarrier spacing, the first subcarrier spacing is different from the second subcarrier spacing, and each of the control channel transmission units includes N resource particles, and the N resource particles are located at the same time. Within the domain symbol, the N is a positive integer and N ⁇ 2.
  • the network device sends the first PDCCH and the second PDCCH.
  • the downlink control channel of the network device may be used for scheduling the sending of the uplink physical layer data and/or the receiving of the downlink physical layer data, and may also be used for indicating the uplink power control adjustment, and may also be used for receiving or scheduling the receiving of the random access response. .
  • the first subcarrier spacing and the second subcarrier spacing are different.
  • the downlink control information (DCI) format that the first PDCCH and the second PDCCH can bear is the same.
  • the first PDCCH may carry X types of DCI formats
  • the second PDCCH may carry Y types of DCI formats, and X ⁇ Y
  • the X kinds of DCI formats include Y kinds of DCI formats.
  • the same DCI format may be that the type of the indication information included in the DCI format of each type is the same and the number of information bits included in the indication information is the same, or the coding mode of the information bits is the same, that is, the network device.
  • the method of generating DCI is the same.
  • the first PDCCH is mapped to the A control channel transmission units of the first time-frequency resource
  • the second PDCCH is mapped to the B control channel transmission units of the second time-frequency resource
  • A is a positive integer and A ⁇ 2
  • the B is a positive integer and B ⁇ 2
  • a and B may be equal or unequal, wherein each control channel transmission unit includes N resources.
  • Particles, the N resource particles are located in the same time domain symbol, the N being a positive integer and N ⁇ 2.
  • the value of N can be 36, or 48, or 60, or 72, or 84, or 90, or 108, or 144.
  • the resource element (RE) is a time-frequency resource that occupies one time-domain symbol in the time domain dimension and occupies one sub-carrier in the frequency domain dimension.
  • the at least one control channel transmission unit includes both an RE carrying DCI information and an RE for carrying pilot symbols transmitted together with an RE carrying DCI information.
  • the at least one control channel transmission unit includes only REs carrying DCI information.
  • the subcarrier spacing of the PDCCH in the present application refers to a frequency domain interval of peaks of two adjacent subcarriers in a subcarrier occupied by the PDCCH.
  • the subcarrier spacing It refers to the frequency domain interval of the peak of the subcarrier occupied by the PDCCH and the peak of the adjacent subcarrier.
  • the network device may determine the location of the time-frequency resource mapped by the first PDCCH and the second PDCCH according to the preset information stored by the network device, where the preset information is also stored in the terminal device, where the preset information may be specified by a standard; The network device may also determine the time-frequency resources that the first PDCCH and the second PDCCH can occupy according to the current primary service type and the traffic volume, and send indication information, indicating the first, before sending the first PDCCH and the second PDCCH.
  • the time-frequency resource that the terminal device can occupy in the first PDCCH and the second PDCCH monitors the first PDCCH and the second PDCCH, where the first The time-frequency resource that the PDCCH and the second PDCCH can occupy may be a search space of the PDCCH or a time-frequency resource of the PDCCH that the network device can occupy.
  • the network device may simultaneously send the first PDCCH and the second PDCCH, or may separately send the first PDCCH and the second PDCCH, where the first PDCCH and the second PDCCH may be a PDCCH for carrying a random access response message, and
  • the PDCCH that is received by the scheduled random access response message, or received by the paging message, or received by the system information may also be a dedicated PDCCH for scheduling downlink physical layer data reception or uplink physical layer data transmission of the terminal device, and the first PDCCH.
  • the second PDCCH may be carried on different carriers, or may be carried on the same carrier.
  • the network device of the present application may also send more PDCCHs with different subcarrier spacings.
  • the network device indicates the location of the time-frequency resource that can be occupied by the PDCCH of the at least two subcarrier intervals by transmitting a PDCCH of at least two subcarrier intervals and by means of a preset manner or sending indication information.
  • terminal devices supporting different subcarrier intervals can be scheduled and/or configured.
  • the network device maps the first PDCCH and the second PDCCH to the first time-frequency resource and the second time-frequency resource, respectively, where the method further includes:
  • the network device determines the first subcarrier spacing and the second subcarrier spacing from at least two subcarrier intervals.
  • the network device may determine the first subcarrier spacing and the second subcarrier spacing according to actual conditions. For example, the network device may determine the first subcarrier spacing and the second subcarrier spacing according to the carrier frequency band used by the network device, or The network device determines a first subcarrier spacing and a second subcarrier spacing according to a capability of the terminal device of the predetermined service to receive signals of different subcarrier intervals.
  • the network device determines, according to an actual situation, a first subcarrier interval and a second subcarrier interval from at least two subcarrier intervals. Flexible to adapt to different application scenarios.
  • the method 200 before the sending, by the network device, the first PDCCH and the second PDCCH, the method 200 further includes:
  • the network device sends first information that is carried in a system message or a broadcast message, where the first information is used to indicate the first subcarrier interval and/or the second subcarrier interval, so as to be received
  • the terminal device of the first information receives the first PDCCH according to the first subcarrier interval or the second PDCCH according to the second subcarrier interval.
  • the first information may indicate a subcarrier spacing of one PDCCH, and may also indicate a subcarrier spacing of at least two PDCCHs, when the first information indicates only a subcarrier spacing of one PDCCH, for example, when the first information indicates
  • the network device may indicate the subcarrier spacing of the second PDCCH (ie, the second subcarrier spacing) to the terminal device by using the high layer signaling, where the first PDCCH
  • the PDCCH is used to carry the random access response message, and may be received by the scheduled random access response message, or received by the paging message, or the PDCCH received by the system information, where the second PDCCH is the downlink physical layer data of the scheduling terminal device.
  • a dedicated PDCCH that receives or uplinks physical layer data transmission.
  • the first subcarrier spacing may be an anchor subcarrier spacing, and the anchor subcarrier spacing may also be referred to as a primary subcarrier spacing or a preferred subcarrier spacing, and the network device may be based on actual conditions. Determining the anchor subcarrier spacing, for example, a carrier frequency band used by the network device, or a capability of a terminal device that the network device is scheduled to receive for different subcarrier spacing signals.
  • the anchor subcarrier spacing may be a cell-specific subcarrier spacing.
  • the terminal device receiving the first information may determine one of the at least two subcarrier intervals as its anchor subcarrier spacing.
  • the anchor subcarrier spacing may be a set of terminal-specific subcarrier spacings having the same characteristics. For example, a plurality of terminal devices in the current cell access the cell by using synchronization signals with different subcarrier intervals, and the terminal device accessing the cell using the synchronization signal with the same subcarrier interval may be regarded as a group of users having the same feature, where The synchronizing signal using the same subcarrier spacing refers to initializing access by monitoring the same subcarrier interval synchronizing signal.
  • the terminal device may determine the anchor subcarrier spacing according to the subcarrier spacing of the synchronization signal used when the terminal device accesses the cell.
  • the terminal device may use the subcarrier spacing of the synchronization signal as its anchor subcarrier spacing, and may also determine an anchor subcarrier spacing according to a preset rule, where the preset rule may be specified by a standard.
  • the anchor subcarrier spacing may also be a UE-specific subcarrier spacing. If the terminal device in the current cell has a preset anchor carrier interval priority, the terminal device may determine the anchor carrier interval according to the preset priority and the at least two subcarrier intervals indicated in the first information.
  • the PDCCH (for example, the first PDCCH or the second PDCCH) may be received according to the anchor carrier interval. Specifically, the terminal device may receive the bearer or the scheduled random access by using the anchor carrier interval.
  • the PDCCH of the response message may also receive a PDCCH for scheduling reception of a paging message, and may also receive a PDCCH for scheduling system information.
  • the network device sends, by using a system message or a broadcast message, first information indicating a first subcarrier interval and/or a second subcarrier interval, and the terminal device that receives the first information may
  • the first indication information determines its anchor subcarrier spacing, and receives a PDCCH for carrying and scheduling a common message according to the anchor subcarrier interval, thereby reducing computational complexity of the PDCCH for monitoring the terminal device for carrying and scheduling the common message. , thereby solving the communication system with multiple subcarrier spacing How the terminal device accesses the communication network and how to reside in the communication network.
  • the first information is further used to indicate a location of a frequency domain resource and a location of a time domain resource that the first PDCCH and/or the second PDCCH can occupy.
  • the first information in the S240 indicates the subcarrier spacing of the first PDCCH
  • the first information is further used to indicate the location of the frequency domain resource and the time domain resource that can be occupied by the first PDCCH, where the first information is indicated in S240.
  • the first information is further used to indicate a location of the frequency domain resource that the first PDCCH can occupy and a location of the time domain resource, and a frequency domain that the second PDCCH can occupy. The location of the resource and the location of the time domain resource.
  • the first information may indicate a bandwidth of a frequency domain resource that can be occupied by each PDCCH, for example, indicating a number of control channel transmission units included in the frequency domain resource.
  • the first information may also indicate the location of the frequency domain resource that each PDCCH can occupy.
  • the first information may indicate the starting subcarrier sequence number of the frequency domain resource or the sequence number of the starting resource block, and the network device may also be predefined.
  • a plurality of candidate frequency domain resource regions indicate the number of the specific frequency domain resource region by using the first information.
  • the first information may also indicate the location of the time domain resource that each PDCCH can occupy.
  • the first information may indicate the number of time domain symbols occupied by the time domain resource and the starting sequence number of the time domain symbol, and the network device also
  • a plurality of candidate time domain resource regions may be defined in advance, and the number of the specific time domain resource regions is indicated by the first information.
  • the sequence number of the start time domain symbol of the time domain resource region is previously agreed by the communication standard, and the first information may indicate the sequence number of the end time domain symbol of the time domain resource.
  • the network device indicates, by using the first information, a location of a frequency domain resource that can be occupied by at least one PDCCH and a location of a time domain resource, thereby reducing the monitoring of the terminal device for carrying and scheduling the public.
  • the computational complexity of the PDCCH of the message is not limited thereto.
  • the method 200 before the sending, by the network device, the first PDCCH and the second PDCCH, the method 200 further includes:
  • the network device sends second information to the terminal device, where the second information is used to indicate the first subcarrier spacing and/or the second subcarrier spacing, so that the terminal device is configured according to the first Receiving the first PDCCH by a subcarrier interval and/or receiving the second PDCCH according to the second subcarrier interval.
  • the first PDCCH and the second PDCCH may be a dedicated PDCCH of the terminal device, and the network device sends the second information to the terminal device, where the second information is used to indicate the first subcarrier spacing and/or the second subcarrier spacing.
  • the terminal device may receive the PDCCH according to the first subcarrier interval and/or the second subcarrier interval indicated by the second information.
  • the network device may further reconfigure an anchor carrier interval of the terminal device in the second information, where the network device may determine, as the terminal, a subcarrier interval corresponding to a time-frequency resource with a low usage rate of the time-frequency resource.
  • the new anchor carrier spacing of the device may also determine that the subcarrier spacing corresponding to the time-frequency resource with better channel quality of the time-frequency resource is the new anchor sub-carrier spacing of the terminal device, when the second information indicates only one sub- When the carrier is separated, the terminal device can also confirm that the one subcarrier spacing is a new anchor subcarrier spacing.
  • the terminal device may monitor the common PDCCH and the user-specific PDCCH according to the anchor subcarrier interval, and monitor the user-specific PDCCH according to other non-anchor subcarrier intervals.
  • the network device sends second information indicating the first subcarrier spacing and/or the second subcarrier spacing to the terminal device by using the high layer signaling, and the terminal device may receive according to the first subcarrier interval.
  • the first PDCCH and/or the second PDCCH is received according to the second subcarrier interval, thereby supporting transmission or reception of a PDCCH of a communication system of a plurality of subcarrier intervals.
  • the second information is further used to indicate a location of a frequency domain resource and a location of a time domain resource that the first PDCCH and/or the second PDCCH can occupy.
  • the second information in the S250 indicates the subcarrier spacing of the first PDCCH
  • the second information is further used to indicate the location of the frequency domain resource and the time domain resource that the first PDCCH can occupy, where the second information is indicated in S250.
  • the second information is further used to indicate a location of the frequency domain resource that the first PDCCH can occupy and a location of the time domain resource, and a frequency domain that the second PDCCH can occupy. The location of the resource and the location of the time domain resource.
  • the second information may indicate a bandwidth of the frequency domain resources that can be occupied by each PDCCH, for example, indicating the number of control channel transmission units included in the frequency domain resources.
  • the second information may also indicate the location of the frequency domain resource that each PDCCH can occupy.
  • the second information may indicate the starting subcarrier sequence number of the frequency domain resource or the sequence number of the starting resource block, and the network device may also be predefined.
  • a plurality of candidate frequency domain resource regions indicate the number of the specific frequency domain resource region by using the second information.
  • the second information may also indicate the location of the time domain resource that each PDCCH can occupy.
  • the second information may indicate the number of time domain symbols occupied by the time domain resource and the starting sequence number of the time domain symbol, and the network device also
  • a plurality of candidate time domain resource regions may be defined in advance, and the number of the specific time domain resource regions is indicated by the second information.
  • the sequence number of the start time domain symbol of the time domain resource region is previously agreed by the communication standard, and the second information may indicate the sequence number of the end time domain symbol of the time domain resource.
  • the network device indicates, by using the second information, a location of a frequency domain resource that can be occupied by at least one PDCCH and a location of a time domain resource, thereby reducing the monitoring of the terminal device for bearer and scheduling.
  • the computational complexity of the PDCCH of the message is not limited thereto.
  • the method for transmitting a PDCCH where the network device sends at least two PDCCHs with different sub-carrier spacings, and indicates at least one sub-carrier interval and a location and a time-domain resource of a frequency domain resource that can be occupied by a corresponding PDCCH between the at least one sub-carrier.
  • the location thereby supporting the transmission or reception of PDCCHs for communication systems of multiple subcarrier spacings, and addressing the problem of how to schedule and/or configure terminal devices in a communication system with multiple subcarrier spacing.
  • a method for transmitting a PDCCH according to the present application is described in detail from the perspective of a network device.
  • the method for receiving a PDCCH according to the present application will be described in detail below from the perspective of a terminal device.
  • the method 300 for receiving a PDCCH according to the present application includes:
  • the terminal device receives the first PDCCH sent by the network device on the first time-frequency resource, and the terminal device receives the second PDCCH sent by the network device on the second time-frequency resource, where the first time
  • the subcarrier spacing of the frequency resource is a first subcarrier spacing
  • the subcarrier spacing of the second time frequency resource is a second subcarrier spacing
  • the first subcarrier spacing is different from the second subcarrier spacing
  • the first PDCCH occupies A control channel transmission unit
  • the second PDCCH occupies B control channel transmission units
  • the A is a positive integer and A ⁇ 2
  • the B is a positive integer and B ⁇ 2
  • each of the The control channel transmission unit includes N resource particles, the N resource particles being located in the same time domain symbol, the N being a positive integer and N ⁇ 2.
  • the terminal device demodulates the first PDCCH and the second PDCCH.
  • the terminal device receives at least two PDCCHs with different subcarrier spacings, for example, receiving the first PDCCH on the first time-frequency resource, and receiving the second PDCCH on the second time-frequency resource, where the first time-frequency resource is The carrier interval is different from the subcarrier spacing of the second time-frequency resource, and the terminal device demodulates the first PDCCH and the second PDCCH after receiving the first PDCCH and the second PDCCH, and acquires a corresponding DCI.
  • the first PDCCH and the second PDCCH may carry the same DCI format.
  • the first PDCCH may carry X types of DCI formats
  • the second PDCCH may carry a DCI format in Y, and X ⁇ Y
  • the DCI format in X includes a DCI format in Y.
  • the same DCI format may be that the type of the indication information included in the DCI format of each type is the same and the number of information bits included in the indication information is the same, or the coding mode of the information bits is the same, that is, the network device.
  • the method of generating DCI is the same.
  • the first PDCCH is mapped to the A control channel transmission units of the first time-frequency resource
  • the second PDCCH is mapped to the B control channel transmission units of the second time-frequency resource
  • A is a positive integer and A ⁇ 2
  • the B is a positive integer and B ⁇ 2
  • a and B may be equal or unequal, wherein each control channel transmission unit includes N REs, and the N REs are located in the same time domain symbol, N is a positive integer and N ⁇ 2.
  • the value of N can be 36, or 48, or 60, or 72, or 84, or 90, or 108, or 144.
  • the RE is a time domain symbol that lasts in the time domain dimension and occupies one subcarrier in the frequency domain dimension.
  • the at least one control channel transmission unit includes both an RE carrying DCI information and an RE for carrying pilot symbols transmitted together with an RE carrying DCI information.
  • the at least one control channel transmission unit includes only REs carrying DCI information.
  • the subcarrier spacing of the PDCCH in the present application refers to a frequency domain interval of peaks of two adjacent subcarriers in a subcarrier occupied by the PDCCH. When the PDCCH occupies only one subcarrier, the subcarrier spacing It refers to the frequency domain interval of the peak of the subcarrier occupied by the PDCCH and the peak of the adjacent subcarrier.
  • the terminal device may determine the location of the time-frequency resource mapped by the first PDCCH and the second PDCCH according to the preset information stored by the terminal device, where the preset information is also stored in the network device, where the preset information may be specified by a standard;
  • the terminal device may also determine time-frequency resources that the first PDCCH and the second PDCCH can occupy according to the indication information sent by the network device, and monitor the first PDCCH and the second PDCCH according to the time-frequency resource, where the first PDCCH and the first PDCCH are
  • the time-frequency resource that the PDCCH can occupy may be the search space of the PDCCH or the time-frequency resource of the PDCCH that the network device can occupy.
  • the terminal device may receive the first PDCCH and the second PDCCH at the same time, and may also receive the first PDCCH and the second PDCCH, respectively, where the first PDCCH and the second PDCCH may be a PDCCH for carrying or scheduling a random access response message.
  • the PDCCH may be a dedicated PDCCH for scheduling the paging channel or scheduling system information, and may be a dedicated PDCCH of the terminal device.
  • the first PDCCH and the second PDCCH may be carried on different carriers or may be carried on the same carrier.
  • the terminal device of the present application may further receive more PDCCHs with different subcarrier spacings.
  • the terminal device determines the location of the time-frequency resource that can be occupied by the PDCCH of the at least two subcarrier intervals by receiving the PDCCH of the at least two subcarrier intervals and by using a preset manner or receiving the indication information.
  • the terminal device determines the location of the time-frequency resource that can be occupied by the PDCCH of the at least two subcarrier intervals by receiving the PDCCH of the at least two subcarrier intervals and by using a preset manner or receiving the indication information.
  • the method 300 before the receiving, by the terminal device, the first PDCCH and the second PDCCH, the method 300 further includes:
  • the terminal device receives the second information that is sent by the network device, where the second information is used to indicate the first subcarrier spacing and the second subcarrier spacing.
  • the terminal device determines, according to the second information, the first subcarrier spacing and the second subcarrier spacing.
  • the terminal device may determine one of the first subcarrier spacing and the second subcarrier spacing as its anchor subcarrier spacing.
  • the anchor subcarrier spacing may be a set of group-specific subcarrier spacings having the same characteristics. For example, a plurality of terminal devices in the current cell access the cell by using synchronization signals with different subcarrier intervals, and the terminal device accessing the cell using the synchronization signal with the same subcarrier interval may be regarded as a group of users having the same feature, where The synchronizing signal using the same subcarrier spacing refers to initializing access by monitoring the same subcarrier interval synchronizing signal.
  • the terminal device may determine the anchor subcarrier spacing according to the subcarrier spacing of the synchronization signal used when the terminal device accesses the cell.
  • the terminal device may use the subcarrier spacing of the synchronization signal as its anchor subcarrier spacing, and may also determine an anchor subcarrier spacing according to a preset rule, where the preset rule may be specified by a standard.
  • the anchor subcarrier spacing may also be a UE-specific subcarrier spacing. If the terminal device in the current cell has a preset anchor carrier spacing priority, the terminal device may determine the anchor carrier spacing according to the preset priority and the at least two subcarrier spacings indicated in the second information.
  • the terminal device determines the first subcarrier interval and the second subcarrier interval according to the second information carried in the high layer signaling, and receives the first PDCCH according to the first subcarrier interval and according to the second The subcarrier spacing receives the second PDCCH, thereby reducing the computational complexity of the PDCCH that the terminal device monitors for carrying and scheduling dedicated messages.
  • the second information is further used to indicate a location of the frequency domain resource and a location of the time domain resource that the first PDCCH can occupy, and a location and a time domain of the frequency domain resource that the second PDCCH can occupy. The location of the resource.
  • the second information may indicate a bandwidth of the frequency domain resources that can be occupied by each PDCCH, for example, indicating the number of control channel transmission units included in the frequency domain resources.
  • the second information may also indicate the location of the frequency domain resource that each PDCCH can occupy.
  • the second information may indicate the starting subcarrier sequence number of the frequency domain resource or the sequence number of the starting resource block, and the network device may also be predefined.
  • a plurality of candidate frequency domain resource regions indicate the number of the specific frequency domain resource region by using the second information.
  • the second information may also indicate the location of the time domain resource that each PDCCH can occupy.
  • the second information may indicate the number of time domain symbols occupied by the time domain resource and the starting sequence number of the time domain symbol, and the network device also
  • a plurality of candidate time domain resource regions may be defined in advance, and the number of the specific time domain resource regions is indicated by the second information.
  • the sequence number of the start time domain symbol of the time domain resource region is previously agreed by the communication standard, and the second information may indicate the sequence number of the end time domain symbol of the time domain resource.
  • the terminal device determines, by using the second information, a location of a frequency domain resource that can be occupied by the first PDCCH and the second PDCCH, and a location of a time domain resource, thereby reducing the monitoring of the terminal device for the terminal device.
  • the computational complexity of the PDCCH carrying and scheduling dedicated messages is not limited thereto.
  • the method for receiving a PDCCH provided by the application determines at least two subcarrier spacings according to preset information or indication information sent by the network device, and receives a PDCCH based on the at least two subcarrier intervals, thereby solving how to access and camp The problem of communication systems in multiple subcarrier spacing.
  • each device includes a corresponding hardware structure and/or software module for performing each function in order to implement the above functions.
  • the present application can be implemented in a combination of hardware or hardware and computer software in combination with the elements and algorithm steps of the various examples described in the embodiments disclosed herein. Whether a function is implemented by hardware or computer software to drive hardware depends on the specific application and design of the technical solution. Restrictions. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.
  • the application may divide the functional units of the terminal device and the network device according to the above method example.
  • each functional unit may be divided according to each function, or two or more functions may be integrated into one processing unit.
  • the above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. It should be noted that the division of the unit in the present application is schematic, and is only a logical function division, and the actual implementation may have another division manner.
  • FIG. 4 shows a possible structural diagram of the network device involved in the above embodiment.
  • the network device 400 includes a processing unit 402 and a communication unit 403.
  • the processing unit 402 is configured to control management of the actions of the network device 400, for example, the processing unit 402 is configured to support the network device 400 to perform S210 of FIG. 2 and/or other processes for the techniques described herein.
  • Communication unit 403 is used to support communication between network device 400 and other network entities, such as with terminal devices in method 300.
  • the network device 400 may further include a storage unit 401 for storing program codes and data of the network device 400.
  • the processing unit 402 is configured to map the first downlink physical control channel PDCCH to the A control channel transmission units on the first time-frequency resource, and the network device maps the second PDCCH to the second time-frequency resource.
  • the B control channel transmission units the A is a positive integer and A ⁇ 2
  • the B is a positive integer and B ⁇ 2
  • the subcarrier spacing of the first time-frequency resource is the first sub-carrier spacing
  • the subcarrier spacing of the second time-frequency resource is a second subcarrier spacing
  • the first subcarrier spacing is different from the second subcarrier spacing
  • each of the control channel transmission units includes N resource particles.
  • the N resource particles are located in the same time domain symbol, the N is a positive integer and N ⁇ 2;
  • the communication unit 403 is configured to send the first unit mapped by the processing unit 402 on the control channel transmission unit PDCCH and the second PDCCH.
  • the processing unit 402 can be a processor or a controller, for example, can be a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application specific integrated circuit (application specific integrated circuit, ASIC), field programmable gate array (FPGA) or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • Communication unit 403 can be a transceiver or transceiver circuit.
  • the storage unit 401 can be a memory.
  • the network device involved in the present application may be the network device shown in FIG. 5.
  • the network device 510 includes a processor 512, a transceiver 513, and a memory 511.
  • the transceiver 513, the processor 512, and the memory 511 can communicate with each other through an internal connection path to transfer control and/or data signals.
  • the network device provided by the present application transmits at least two PDCCHs with different subcarrier spacings, and indicates at least one subcarrier spacing and a location of the frequency domain resources and time domain resources that the corresponding PDCCH between the at least one subcarrier can occupy. Location, thereby supporting transmission of PDCCHs for communication systems of multiple subcarrier spacing, and addressing the problem of how to schedule and/or configure terminal devices in a communication system with multiple subcarrier spacing.
  • FIG. 6 shows a possible structural diagram of the terminal device involved in the above embodiment.
  • the terminal device 600 includes a processing unit 602 and a communication unit 603.
  • the processing unit 602 is configured to control and manage the actions of the terminal device 600.
  • the processing unit 602 is configured to support the terminal device 600 to perform S310 of FIG. 3 and/or other processes for the techniques described herein.
  • Communication unit 603 is used to support communication between terminal device 600 and other network entities, such as with network devices in method 200.
  • the terminal device 600 may further include a storage unit 601 for storing program codes and data of the terminal device 600.
  • the communication unit 603 is configured to receive, by using the first time-frequency resource, the first PDCCH that is sent by the network device, and the terminal device, on the second time-frequency resource, to receive the second PDCCH that is sent by the network device, where
  • the subcarrier spacing of the first time-frequency resource is a first sub-carrier spacing
  • the sub-carrier spacing of the second time-frequency resource is a second sub-carrier spacing
  • the first PDCCH occupies A control channel transmission unit
  • the second PDCCH occupies B control channel transmission units
  • the A is a positive integer and A ⁇ 2
  • the B is a positive integer and B ⁇ 2
  • Each of the control channel transmission units includes N resource particles, the N resource particles are located in the same time domain symbol, the N is a positive integer and N ⁇ 2;
  • the processing unit 602 is configured to demodulate The first PDCCH and the second PDCCH received by the communication unit 603.
  • Processing unit 602 can be a processor or controller, such as a CPU, general purpose processor, DSP, ASIC, FPGA or other programmable logic device, transistor logic device, hardware component, or any combination thereof. It is possible to implement or carry out the various illustrative logical blocks, modules and circuits described in connection with the present disclosure.
  • the processor may also be a combination of computing functions, for example, including one or more microprocessor combinations, a combination of a DSP and a microprocessor, and the like.
  • Communication unit 603 can be a transceiver or transceiver circuit.
  • the storage unit 601 can be a memory.
  • the terminal device involved in the present application may be the terminal device shown in FIG.
  • the terminal device 710 includes a processor 712, a transceiver 713, and a memory 711.
  • the transceiver 713, the processor 712, and the memory 711 can communicate with each other through an internal connection path to transfer control and/or data signals.
  • the terminal device provided by the present application determines at least two subcarrier spacings according to preset information or indication information sent by the network device, and receives a PDCCH based on the at least two subcarrier spacings, thereby solving how to access and reside in multiple The problem of subcarrier spacing communication systems.
  • the size of the serial number of each process does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the present application.
  • the steps of a method or algorithm described in connection with the present disclosure may be implemented in a hardware or may be implemented by a processor executing software instructions.
  • the software instructions may be composed of corresponding software modules, which may be stored in a random access memory (RAM), a flash memory, a read only memory (ROM), an erasable programmable read only memory ( Erasable programmable ROM (EPROM), electrically erasable programmable read only memory (EEPROM), registers, hard disk, mobile hard disk, A compact disc (CD-ROM) or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor to enable the processor to read information from, and write information to, the storage medium.
  • the storage medium can also be an integral part of the processor.
  • the processor and the storage medium can be located in an ASIC. Additionally, the ASIC can be located in the terminal device.
  • the processor and the storage medium can also exist as discrete components in the terminal device and the network device.
  • the computer program product includes one or more computer instructions.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in or transmitted by a computer readable storage medium.
  • the computer instructions may be from a website site, computer, server or data center via a wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) Another website site, computer, server, or data center for transmission.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD), or a semiconductor medium (eg, a solid state disk (SSD)). Wait.

Abstract

本申请提供了一种发送或接收物理下行控制信道PDCCH的方法和设备，该方法包括：网络设备将第一PDCCH映射在第一时频资源上的A个控制信道传输单元，以及将第二PDCCH映射在第二时频资源上的B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同；发送所述第一PDCCH和所述第二PDCCH。根据本申请提供的传输PDCCH的方法和设备，可以实现在多子载波间隔的通信系统中网络设备调度和/或配置终端设备以及终端设备的接入和驻留。

Description

发送或接收物理下行控制信道的方法和设备
本申请要求于2016年09月20日提交中国专利局、申请号为201610834797.4、申请名称为“发送或接收物理下行控制信道的方法和设备”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
本申请涉及通信领域，尤其涉及无线通信领域中一种发送或接收物理下行控制信道(physical downlink control channel，PDCCH)的方法和设备。
背景技术
传统的数字信号传输，都是将信息流一次通过一条通道进行传输，属于串行传输的方式。多载波技术采用的是并行传输方式，将串行的高速信息流进行串并变换，分隔成多个并行的低速信息流，再将多个并行的低速信息流叠加进行传输，形成多个载波的传输系统，即多载波技术为用多个载波传输高速数据信息的技术。其中，载波即载有数据的特定频率的无线电波。
多载波传输技术在通信系统中已得到广泛应用，例如应用在第四代(the 4th generation，4G)移动通信系统以及电气和电子工程师协会(institute of electrical and electronics engineers，IEEE)802.11系列系统中。在当前的通信系统中，各系统支持的业务较为统一，每个通信系统仅支持一种子载波间隔的波形。第五代(the 5th generation，5G)移动通信系统中，网络设备的服务小区可以支持多种子载波间隔，使得服务小区可以在不同的业务、不同的部署场景下使用不同的子载波间隔信号服务不同需求的终端设备。
但是，网络设备如何调度支持不同子载波间隔的终端设备是一个亟待解决的问题。
发明内容
本申请提供了一种发送或接收PDCCH的方法和设备，网络设备通过发送至少两种子载波间隔不同的PDCCH，并通过预设方式或者发送指示信息的方式指示该至少两种子载波间隔，从而解决了如何调度或配置支持不同子载波间隔的终端设备的问题。
第一方面，提供了一种发送PDCCH的方法，该方法包括：网络设备将第一PDCCH映射在第一时频资源上的A个控制信道传输单元，以及所述网络设备将第二PDCCH映射在第二时频资源上的B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2；所述网络设备发送所述第一PDCCH和所述第二PDCCH。
根据本申请的发送PDCCH的方法，网络设备确定至少两种子载波间隔，并将至少两 个PDCCH分别映射在对应所述至少两种子载波的时频资源上，从而可以调度和/或配置支持不同子载波间隔的终端设备。
可选地，所述网络设备发送所述第一PDCCH和所述第二PDCCH之前，所述方法还包括：所述网络设备发送承载于系统消息或广播消息中的第一信息，所述第一信息用于指示所述第一子载波间隔和/或所述第二子载波间隔，以便于接收到所述第一信息的终端设备根据所述第一子载波间隔接收所述第一PDCCH或者根据所述第二子载波间隔接收所述第二PDCCH。
网络设备通过发送承载于广播消息或者系统消息中的第一信息指示至少一种子载波间隔，以使得接收到该第一信息的终端设备根据该第一信息指示的子载波间隔确定接收PDCCH。
可选地，所述第一信息还用于指示所述第一PDCCH和/或所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
网络设备通过第一信息指示至少一个PDCCH可以占用的频域资源的位置和时域资源的位置，从而减小了所述终端设备监测用于承载和调度公共消息的PDCCH的计算复杂度。
可选地，所述网络设备发送所述第一PDCCH和所述第二PDCCH之前，所述方法还包括：所述网络设备向终端设备发送第二信息，所述第二信息用于指示所述第一子载波间隔和所述第二子载波间隔，以便于所述终端设备根据所述第一子载波间隔接收所述第一PDCCH以及根据所述第二子载波间隔接收所述第二PDCCH。
网络设备通过高层信令向终端设备发送用于指示第一子载波间隔和或第二子载波间隔第二信息，终端设备可以根据第一子载波间隔接收第一PDCCH和或根据第二子载波间隔接收第二PDCCH，从而支持多种子载波间隔的通信系统的PDCCH的发送或接收。
可选地，所述第二信息还用于指示所述第一PDCCH和所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
网络设备通过第二信息指示至少一个PDCCH可以占用的频域资源的位置和时域资源的位置，从而减小了所述终端设备监测用于承载和调度终端设备专用消息的PDCCH的计算复杂度。
第二方面，提供了一种接收PDCCH的方法，该方法包括：终端设备在第一时频资源上接收网络设备发送的第一PDCCH，以及所述终端设备在第二时频资源上接收所述网络设备发送的第二PDCCH，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，所述第一PDCCH占用A个控制信道传输单元，所述第二PDCCH占用B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2；所述终端设备解调所述第一PDCCH和所述第二PDCCH。
终端设备确定至少两种子载波间隔，并根据该至少两种子载波间隔接收映射在不同时频资源上的至少两个PDCCH，从而解决了多子载波间隔的通信系统中终端设备如何接入通信网络以及如何驻留在该通信网络的问题。
可选地，所述终端设备接收所述第一PDCCH和所述第二PDCCH之前，所述方法还包括：所述终端设备接收所述网络设备发送的第二信息，所述第二信息用于指示所述第一 子载波间隔和所述第二子载波间隔；所述终端设备根据所述第二信息确定所述第一子载波间隔和所述第一子载波间隔接收所述第一PDCCH以及根据所述第二子载波间隔接收所述第二PDCCH。
终端设备根据网络设备发送的指示信息确定至少两个PDCCH可以占用的时频资源的子载波间隔，从而减小了所述终端设备监测用于承载和调度终端设备专用信息的PDCCH的计算复杂度。
可选地，所述第二信息还用于指示所述第一PDCCH可以占用的频域资源的位置和时域资源的位置，以及所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
终端设备根据网络设备发送的指示信息确定至少一个PDCCH可以占用的频域资源的位置和可以占用的时域资源的位置，从而减小了所述终端设备监测用于承载和调度终端设备专用信息的PDCCH的计算复杂度。
第三方面，本申请提供了一种网络设备，该网络设备可以实现上述第一方面所涉及方法中网络设备所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的单元或模块。
在一种可能的设计中，该网络设备的结构中包括处理器和收发器，该处理器被配置为支持该网络设备执行上述方法中相应的功能。该收发器用于支持该网络设备与其他设备之间的通信。该网络设备还可以包括存储器，该存储器用于与处理器耦合，其保存该网络设备必要的程序指令和数据。
第四方面，本申请提供了一种终端设备，该终端设备可以实现上述第二方面所涉及方法中终端设备所执行的功能，所述功能可以通过硬件实现，也可以通过硬件执行相应的软件实现。所述硬件或软件包括一个或多个上述功能相应的单元或模块。
在一种可能的设计中，该终端设备的结构中包括处理器和收发器，该处理器被配置为支持该终端设备执行上述方法中相应的功能。该收发器用于支持该终端设备与其他网元之间的通信。该终端设备还可以包括存储器，该存储器用于与处理器耦合，其保存该终端设备必要的程序指令和数据。
第五方面，本申请提供了一种通信系统，该通信系统包括第四方面所述的终端设备和第三方面所述的网络设备。
第六方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质中存储了计算机程序代码，该计算机程序代码被处理单元或处理器执行时，使得网络设备执行第一方面所述的方法。
第七方面，本申请提供了一种计算机可读存储介质，该计算机可读存储介质中存储了计算机程序代码，该计算机程序代码被处理单元或处理器执行时，使得终端设备执行第二方面所述的方法。
第八方面，提供了一种通信芯片，其中存储有指令，当其在网络设备上运行时，使得该通信芯片执行上述第一方面的方法。
第九方面，提供了一种通信芯片，其中存储有指令，当其在终端设备上运行时，使得该通信芯片执行上述第二方面的方法。
第十方面，提供了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被网络设备的通信单元或收发器、以及处理单元或处理器运行时，使 得网络设备执行上述第一方面的方法。
第十一方面，提供了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被终端设备的通信单元或收发器、以及处理单元或处理器运行时，使得终端设备执行上述第二方面的方法。
附图说明
图1是适用本申请的发送或接收PDCCH的通信系统的示意性构架图；
图2是本申请提供的发送PDCCH的方法的示意性流程图；
图3是本申请提供的接收PDCCH的方法的示意性流程图；
图4是本申请提供的一种可能的网络设备的结构示意图；
图5是本申请提供的另一种可能的网络设备的结构示意图；
图6是本申请提供的一种可能的终端设备的结构示意图；
图7是本申请提供的另一种可能的终端设备的结构示意图。
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。
本申请的技术方案可以应用于各种通信系统，例如：全球移动通讯(global system of mobile communication，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)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)以及5G通信系统。
在本申请中，终端设备可以经无线接入网(radio access network，RAN)与一个或多个核心网进行通信，该用户设备可称为接入终端、用户设备(user equipment，UE)、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。接入终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备以及5G网络中的终端设备。
在本申请中，网络设备可用于与终端设备通信，该网络设备可以是GSM或CDMA中的基站(base transceiver station，BTS)，也可以是WCDMA中的基站(node B，NB)，还可以是LTE中的演进型基站(evolved node B，eNB)，或者该网络设备可以为中继站、接入点、车载设备、可穿戴设备以及5G网络中的基站(gNB)等，本申请并不限定，但为描述方便，下述实施例将以基站eNB和用户设备UE为例进行说明。
图1示出了适用本申请的发送或接收PDCCH的通信系统100的示意性构架图。如图1所示，该通信系统100可以包括网络设备102，该网络设备102可以包括一个或多个天线组，每个天线组可以包括一个或多个天线。例如，一个天线组可以包括天线104和106，另一个天线组可以包括天线108和110，附加组可以包括天线112和114。虽然图1中对 于每个天线组示出了2个天线，但应理解每个天线组可以具有更多的或更少的天线。网络设备102可以附加地包括发射机链和接收机链，本领域普通技术人员可以理解，它们均可包括与信号发送和接收相关的多个部件(例如处理器、调制器、复用器、解调器、解复用器或天线等)。
网络设备102可以与多个终端设备(例如终端设备116和终端设备122)通信。终端设备116与天线112和114通信，其中天线112和114通过前向链路118向终端设备116发送信息，并通过反向链路120从终端设备116接收信息。此外，终端设备122与天线104和106通信，其中天线104和106通过前向链路124向终端设备122发送信息，并通过反向链路126从终端设备122接收信息。
例如，在频分双工系统中，前向链路118可利用与反向链路120不同的频带，前向链路124可利用与反向链路126不同的频带；再例如，在时分双工系统和全双工系统中，前向链路118和反向链路120可以使用共同的频带，前向链路124和反向链路126也可以使用共同的频带。
在给定时间，网络设备102、终端设备116或终端设备122可以是无线通信发送装置和/或无线通信接收装置。当发送数据时，无线通信发送装置可对数据进行编码以用于传输。具体地，无线通信发送装置可获取(例如生成、从其它通信装置接收、或在存储器中保存等)要通过信道发送至无线通信接收装置的一定数目的数据比特。这种数据比特可包含在数据的传输块(或多个传输块)中，传输块可被分段以产生多个码块。
下面，将结合附图对本申请提供的发送和接收PDCCH的方法和设备进行详细说明。
图2示出了根据本申请的发送PDCCH的方法200的示意性流程图，如图2所示，该方法包括：
S210，网络设备将第一PDCCH映射在第一时频资源上的A个控制信道传输单元，以及所述网络设备将第二PDCCH映射在第二时频资源上的B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2。
S220，所述网络设备发送所述第一PDCCH和所述第二PDCCH。
网络设备发送下行控制信道可以用于调度上行物理层数据的发送和/或下行物理层数据的接收，也可以用于指示上行功率控制调整等，还可以用于承载或者调度随机接入响应的接收。本申请中，所述第一子载波间隔和第二子载波间隔不同。所述第一PDCCH和第二PDCCH可以承载的下行控制信息(downlink control information，DCI)格式相同。例如，第一PDCCH可以承载X种DCI格式，第二PDCCH可以承载Y种DCI格式，且X≥Y，X种DCI格式包括Y种DCI格式。所述DCI格式相同可以是每一类的DCI格式包括的指示信息的类型相同以及所述指示信息包含的信息比特的数量相同，也可以是所述信息比特的编码调制方式相同即所述网络设备生成DCI的方法相同。
第一PDCCH被映射到第一时频资源的A个控制信道传输单元上，第二PDCCH被映射到第二时频资源的B个控制信道传输单元上，所述A为正整数且A≥2，所述B为正整数且B≥2，A与B可以相等也可以不相等，其中，每个控制信道传输单元包括N个资源 粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2。例如，N的取值可以为36、或者48、或者60、或者72、或者84、或者90、或者108、或者144。所述资源粒子(resource element，RE)为时域维度上持续一个时域符号，频域维度上占用一个子载波的时频资源。在一个例子中，上述至少一个控制信道传输单元中既包括承载DCI信息的RE又包括与承载DCI信息的RE一起发送的用于承载导频符号的RE。在又一个例子中，上述至少一个控制信道传输单元中仅包括承载DCI信息的RE。
需要说明的是，本申请中所述的PDCCH的子载波间隔是指PDCCH所占用的子载波中两个相邻子载波的峰值的频域间隔，当PDCCH仅占用一个子载波时，子载波间隔是指该PDCCH所占用的子载波的峰值与相邻子载波的峰值的频域间隔。
网络设备可以根据该网络设备存储的预设信息确定第一PDCCH和第二PDCCH映射的时频资源的位置，该预设信息同样存储在终端设备中，所述预设信息可以是标准规定的；网络设备也可以根据当前主要业务类型以及业务量自己确定所述第一PDCCH和第二PDCCH可以占用的时频资源，并在发送第一PDCCH和第二PDCCH前发送指示信息，指示所述第一PDCCH和第二PDCCH可以占用的时频资源，以便于接收到该指示信息终端设备在所述第一PDCCH和第二PDCCH可以占用的时频资源监测第一PDCCH和第二PDCCH，所述第一PDCCH和第二PDCCH可以占用的时频资源可以是PDCCH的搜索空间也可以是网络设备可以占用的发送PDCCH的时频资源。
本申请中，网络设备可以同时发送第一PDCCH和第二PDCCH，也可以分别发送第一PDCCH和第二PDCCH，第一PDCCH和第二PDCCH可以是用于承载随机接入响应消息的PDCCH，也可以是调度随机接入响应消息接收的，或者寻呼消息接收的，或者系统信息接收的PDCCH，还可以是调度终端设备的下行物理层数据接收或者上行物理层数据发送的专用PDCCH，第一PDCCH和第二PDCCH可以承载于不同的载波，也可以承载于同一个载波。
上述实施例仅是举例说明，本申请不限于此，本申请的网络设备还可以发送更多子载波间隔不同的PDCCH。根据本申请的发送PDCCH的方法，网络设备通过发送至少两种子载波间隔的PDCCH，并通过预设方式或者发送指示信息的方式指示所述至少两种子载波间隔的PDCCH可以占用的时频资源的位置，从而可以调度和/或配置支持不同子载波间隔的终端设备。
可选的，所述网络设备将所述第一PDCCH和所述第二PDCCH分别映射在第一时频资源和第二时频资源之前，所述方法还包括：
S230，所述网络设备从至少两种子载波间隔中确定所述第一子载波间隔和所述第二子载波间隔。
网络设备可以根据实际情况确定所述第一子载波间隔和所述第二子载波间隔，例如，网络设备可以根据该网络设备使用的载波频段确定第一子载波间隔和第二子载波间隔，或者网络设备根据预定服务的终端设备对不同子载波间隔信号接收的能力确定第一子载波间隔和第二子载波间隔。
上述实施例仅是举例说明，本申请不限于此，根据本申请提供的发送PDCCH的方法，网络设备根据实际情况从至少两种子载波间隔中确定第一子载波间隔和第二子载波间隔，可以灵活适应不同的应用场景。
可选地，所述网络设备发送所述第一PDCCH和所述第二PDCCH之前，所述方法200还包括：
S240，所述网络设备发送承载于系统消息或广播消息中的第一信息，所述第一信息用于指示所述第一子载波间隔和/或所述第二子载波间隔，以便于接收到所述第一信息的终端设备根据所述第一子载波间隔接收所述第一PDCCH或者根据所述第二子载波间隔接收所述第二PDCCH。
本申请中，第一信息可以指示一个PDCCH的子载波间隔，也可以指示至少两个PDCCH的子载波间隔，当第一信息仅指示一个PDCCH的子载波间隔时，例如，当第一信息指示第一PDCCH的子载波间隔(即，第一子载波间隔)时，网络设备可以通过高层信令向终端设备指示第二PDCCH的子载波间隔(即，第二子载波间隔)，其中，第一PDCCH是用于承载随机接入响应消息的PDCCH，也可以是调度随机接入响应消息接收的，或者寻呼消息接收的，或者系统信息接收的PDCCH，第二PDCCH是调度终端设备的下行物理层数据接收或者上行物理层数据发送的专用PDCCH。
第一子载波间隔可以是锚子载波间隔(anchor subcarrier spacing)，锚子载波间隔也可称为主子载波间隔(prime subcarrier spacing)或者优选子载波间隔(prior subcarrier spacing)，网络设备可以根据实际情况确定所述锚子载波间隔，例如，所述网络设备使用的载波频段，或者所述网络设备预定服务的终端设备对不同子载波间隔信号接收的能力。所述锚子载波间隔可以是小区专用(cell-specific)的子载波间隔。
如果第一信息指示至少两种子载波间隔，则接收到第一信息的终端设备可以在所述至少两种子载波间隔中确定其中一种为其锚子载波间隔。所述锚子载波间隔可以是一组具有相同特征的终端设备专用(group-specific)的子载波间隔。例如，当前小区中的多个终端设备采用不同子载波间隔的同步信号接入该小区，使用相同子载波间隔的同步信号接入小区的终端设备可以看作是一组具有相同特征的用户，其中，所述使用相同子载波间隔的同步信号是指通过监测相同子载波间隔同步信号实现初始化接入。所述终端设备可以根据该终端设备接入小区时使用的同步信号的子载波间隔确定其锚子载波间隔。所述终端设备可以将所述同步信号的子载波间隔作为其锚子载波间隔，也可以根据预设规则确定锚子载波间隔，所述预设规则可以是标准规定的。又例如，所述锚子载波间隔还可以是终端设备专用(UE-specific)的子载波间隔。如果当前小区中的终端设备有预设的锚子载波间隔优先级，所述终端设备可以根据预设的优先级以及第一信息中指示的至少两种子载波间隔确定锚子载波间隔。
终端设备确定了锚子载波间隔之后就可以根据锚子载波间隔接收PDCCH(例如，第一PDCCH或第二PDCCH)，具体地，终端设备可以采用锚子载波间隔接收用于承载或者调度随机接入响应消息的PDCCH，也可以接收用于调度接收寻呼消息的PDCCH，还可以接收用于调度系统信息的PDCCH。
上述实施例仅是举例说明，本申请不限于此。根据本申请的发送PDCCH的方法，网络设备通过系统消息或广播消息发送用于指示第一子载波间隔和/或第二子载波间隔第一信息，接收到所述第一信息的终端设备可以根据第一指示信息确定其锚子载波间隔，并根据锚子载波间隔接收用于承载和调度公共消息的PDCCH，从而减小了所述终端设备监测用于承载和调度公共消息的PDCCH的计算复杂度，进而解决了多子载波间隔的通信系统 中终端设备如何接入通信网络，以及如何驻留在所述通信网络的问题。
可选地，方法200中，所述第一信息还用于指示所述第一PDCCH和/或所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
本申请中，当S240中第一信息指示第一PDCCH的子载波间隔时，第一信息还用于指示第一PDCCH可以占用的频域资源和时域资源的位置，当S240中第一信息指示第一PDCCH的子载波间隔和第二PDCCH的子载波间隔时，第一信息还用于指示第一PDCCH可以占用的频域资源的位置和时域资源的位置以及第二PDCCH可以占用的频域资源的位置和时域资源的位置。
第一信息可以指示每个PDCCH的可以占用的频域资源的带宽，例如指示所述频域资源所包括的控制信道传输单元的个数。第一信息还可以指示每个PDCCH可以占用的频域资源的位置，例如，第一信息可以指示所述频域资源的起始子载波序号或者起始资源块的序号，网络设备还可以预先定义若干候选频域资源区域，通过第一信息指示具体的频域资源区域的编号。
第一信息还可以指示每个PDCCH可以占用的时域资源的位置，例如，第一信息可以指示所述时域资源占用的时域符号的个数以及时域符号的起始序号，网络设备也可以预先定义若干候选时域资源区域，通过第一信息指示具体的时域资源区域的编号。又例如，所述时域资源区域的起始时域符号的序号是由通信标准事先约定的，第一信息可以指示所述时域资源的结束时域符号的序号。
上述实施例仅是举例说明，本申请不限于此。根据本申请提供的发送PDCCH的方法，网络设备通过第一信息指示至少一个PDCCH可以占用的频域资源的位置和时域资源的位置，从而减小了所述终端设备监测用于承载和调度公共消息的PDCCH的计算复杂度。
可选地，所述网络设备发送所述第一PDCCH和所述第二PDCCH之前，所述方法200还包括：
S250，所述网络设备向终端设备发送第二信息，所述第二信息用于指示所述第一子载波间隔和/或所述第二子载波间隔，以便于所述终端设备根据所述第一子载波间隔接收所述第一PDCCH和/或根据所述第二子载波间隔接收所述第二PDCCH。
本申请中，第一PDCCH和第二PDCCH可以是终端设备的专用PDCCH，网络设备向该终端设备发送第二信息，该第二信息用于指示第一子载波间隔和/或第二子载波间隔，终端设备可以根据第二信息指示的第一子载波间隔和/或第二子载波间隔接收PDCCH。
可选地，网络设备还可以在第二信息中重配所述终端设备的锚子载波间隔，网络设备可以确定时频资源的使用率较低的时频资源对应的子载波间隔作为所述终端设备的新的锚子载波间隔，也可以确定时频资源的信道质量较好的时频资源对应的子载波间隔为所述终端设备的新的锚子载波间隔，当第二信息仅指示一种子载波间隔时，终端设备也可以确认该一种子载波间隔为新的锚子载波间隔。终端设备可以根据锚子载波间隔监测公共PDCCH和用户专用PDCCH，根据其它非锚子载波间隔监测用户专用PDCCH。
上述实施例仅是举例说明，本申请不限于此。根据本申请的发送PDCCH的方法，网络设备通过高层信令向终端设备发送用于指示第一子载波间隔和/或第二子载波间隔的第二信息，终端设备可以根据第一子载波间隔接收第一PDCCH和/或根据第二子载波间隔接收第二PDCCH，从而支持多种子载波间隔的通信系统的PDCCH的发送或接收。
可选地，方法200中，所述第二信息还用于指示所述第一PDCCH和/或所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
本申请中，当S250中第二信息指示第一PDCCH的子载波间隔时，第二信息还用于指示第一PDCCH可以占用的频域资源和时域资源的位置，当S250中第二信息指示第一PDCCH的子载波间隔和第二PDCCH的子载波间隔时，第二信息还用于指示第一PDCCH可以占用的频域资源的位置和时域资源的位置以及第二PDCCH可以占用的频域资源的位置和时域资源的位置。
第二信息可以指示每个PDCCH的可以占用的频域资源的带宽，例如指示所述频域资源所包括的控制信道传输单元的个数。第二信息还可以指示每个PDCCH可以占用的频域资源的位置，例如，第二信息可以指示所述频域资源的起始子载波序号或者起始资源块的序号，网络设备还可以预先定义若干候选频域资源区域，通过第二信息指示具体的频域资源区域的编号。
第二信息还可以指示每个PDCCH可以占用的时域资源的位置，例如，第二信息可以指示所述时域资源占用的时域符号的个数以及时域符号的起始序号，网络设备也可以预先定义若干候选时域资源区域，通过第二信息指示具体的时域资源区域的编号。又例如，所述时域资源区域的起始时域符号的序号是由通信标准事先约定的，第二信息可以指示所述时域资源的结束时域符号的序号。
上述实施例仅是举例说明，本申请不限于此。根据本申请提供的发送PDCCH的方法，网络设备通过第二信息指示至少一个PDCCH可以占用的频域资源的位置和时域资源的位置，从而减小了所述终端设备监测用于承载和调度专用消息的PDCCH的计算复杂度。
本申请提供的发送PDCCH的方法，网络设备发送至少两种子载波间隔不同的PDCCH，并指示至少一种子载波间隔以及该至少一种子载波间对应的PDCCH可以占用的频域资源的位置和时域资源的位置，从而支持多种子载波间隔的通信系统的PDCCH的发送或接收，并解决了在多子载波间隔的通信系统中如何调度和/或配置终端设备的问题。
上文中结合图2，从网络设备的角度详细描述了根据本申请的发送PDCCH的方法，下面将结合图3，从终端设备的角度对根据本申请的接收PDCCH的方法进行详细描述。
如图3所示，根据本申请的接收PDCCH的方法300包括：
S310，终端设备在第一时频资源上接收网络设备发送的第一PDCCH，以及所述终端设备在第二时频资源上接收所述网络设备发送的第二PDCCH，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，所述第一PDCCH占用A个控制信道传输单元，所述第二PDCCH占用B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2。
S320，所述终端设备解调所述第一PDCCH和所述第二PDCCH。
本申请中，终端设备接收至少两个子载波间隔不同的PDCCH，例如，在第一时频资源上接收第一PDCCH，以及在第二时频资源上接收第二PDCCH，第一时频资源的子载波间隔与第二时频资源的子载波间隔不同，终端设备接收到第一PDCCH和第二PDCCH后解调第一PDCCH和第二PDCCH，并获取相应的DCI。
本申请中，所述第一PDCCH和第二PDCCH可以承载的DCI格式相同。例如，第一PDCCH可以承载X种DCI格式，第二PDCCH可以承载Y中DCI格式，且X≥Y，X中DCI格式包括Y中DCI格式。所述DCI格式相同可以是每一类的DCI格式包括的指示信息的类型相同以及所述指示信息包含的信息比特的数量相同，也可以是所述信息比特的编码调制方式相同即所述网络设备生成DCI的方法相同。
第一PDCCH被映射到第一时频资源的A个控制信道传输单元上，第二PDCCH被映射到第二时频资源的B个控制信道传输单元上，所述A为正整数且A≥2，所述B为正整数且B≥2，A与B可以相等也可以不相等，其中，每个控制信道传输单元包括N个RE，所述N个RE位于相同的时域符号内，所述N为正整数且N≥2。例如，N的取值可以为36、或者48、或者60、或者72、或者84、或者90、或者108、或者144。所述RE为时域维度上持续一个时域符号，频域维度上占用一个子载波的时频资源。在一个例子中，上述至少一个控制信道传输单元中既包括承载DCI信息的RE又包括与承载DCI信息的RE一起发送的用于承载导频符号的RE。在又一个例子中，上述至少一个控制信道传输单元中仅包括承载DCI信息的RE。需要说明的是，本申请中所述的PDCCH的子载波间隔是指PDCCH所占用的子载波中两个相邻子载波的峰值的频域间隔，当PDCCH仅占用一个子载波时，子载波间隔是指该PDCCH所占用的子载波的峰值与相邻子载波的峰值的频域间隔。
终端设备可以根据该终端设备存储的预设信息确定第一PDCCH和第二PDCCH映射的时频资源的位置，该预设信息同样存储在网络设备中，所述预设信息可以是标准规定的；终端设备也可以根据网络设备发送的指示信息确定所述第一PDCCH和第二PDCCH可以占用的时频资源，并根据该时频资源监测第一PDCCH和第二PDCCH，所述第一PDCCH和第二PDCCH可以占用的时频资源可以是PDCCH的搜索空间也可以是网络设备可以占用的发送PDCCH的时频资源
本申请中，终端设备可以同时接收第一PDCCH和第二PDCCH，也可以分别接收第一PDCCH和第二PDCCH，第一PDCCH和第二PDCCH可以是用于承载或者调度随机接入响应消息的PDCCH，也可以是调度寻呼信道或者调度系统信息的PDCCH，还可以是终端设备的专用PDCCH，第一PDCCH和第二PDCCH可以承载于不同的载波，也可以承载于同一个载波。
上述实施例仅是举例说明，本申请不限于此，本申请的终端设备还可以接收更多子载波间隔不同的PDCCH。根据本申请的接收PDCCH的方法，终端设备通过接收至少两种子载波间隔的PDCCH，并通过预设方式或者接收指示信息的方式确定所述至少两种子载波间隔的PDCCH可以占用的时频资源的位置，从而可以接入并驻留在支持不同子载波间隔的通信系统。
可选地，所述终端设备接收所述第一PDCCH和所述第二PDCCH之前，所述方法300还包括：
S330，所述终端设备接收所述网络设备发送的第二信息，所述第二信息用于指示所述第一子载波间隔和所述第二子载波间隔。
S340，所述终端设备根据所述第二信息确定所述第一子载波间隔和所述第二子载波间隔。
终端设备可以在所述第一子载波间隔和所述第二子载波间隔中确定其中一种为其锚子载波间隔。所述锚子载波间隔可以是一组具有相同特征的终端设备专用(Group-specific)的子载波间隔。例如，当前小区中的多个终端设备采用不同子载波间隔的同步信号接入该小区，使用相同子载波间隔的同步信号接入小区的终端设备可以看作是一组具有相同特征的用户，其中，所述使用相同子载波间隔的同步信号是指通过监测相同子载波间隔同步信号实现初始化接入。所述终端设备可以根据该终端设备接入小区时使用的同步信号的子载波间隔确定其锚子载波间隔。所述终端设备可以将所述同步信号的子载波间隔作为其锚子载波间隔，也可以根据预设规则确定锚子载波间隔，所述预设规则可以是标准规定的。又例如，所述锚子载波间隔还可以是终端设备专用(UE-specific)的子载波间隔。如果当前小区中的终端设备有预设的锚子载波间隔优先级，所述终端设备可以根据预设的优先级以及第二信息中指示的至少两种子载波间隔确定锚子载波间隔。
上述实施例仅是举例说明，本申请不限于此。根据本申请的接收PDCCH的方法，终端设备根据承载于高层信令中的第二信息确定第一子载波间隔和第二子载波间隔，并根据第一子载波间隔接收第一PDCCH以及根据第二子载波间隔接收第二PDCCH，从而减小了终端设备监测用于承载和调度专用消息的PDCCH的计算复杂度。
可选地，所述第二信息还用于指示所述第一PDCCH可以占用的频域资源的位置和时域资源的位置，以及所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
第二信息可以指示每个PDCCH的可以占用的频域资源的带宽，例如指示所述频域资源所包括的控制信道传输单元的个数。第二信息还可以指示每个PDCCH可以占用的频域资源的位置，例如，第二信息可以指示所述频域资源的起始子载波序号或者起始资源块的序号，网络设备还可以预先定义若干候选频域资源区域，通过第二信息指示具体的频域资源区域的编号。
第二信息还可以指示每个PDCCH可以占用的时域资源的位置，例如，第二信息可以指示所述时域资源占用的时域符号的个数以及时域符号的起始序号，网络设备也可以预先定义若干候选时域资源区域，通过第二信息指示具体的时域资源区域的编号。又例如，所述时域资源区域的起始时域符号的序号是由通信标准事先约定的，第二信息可以指示所述时域资源的结束时域符号的序号。
上述实施例仅是举例说明，本申请不限于此。根据本申请提供的接收PDCCH的方法，终端设备通过第二信息确定第一PDCCH和第二PDCCH可以占用的频域资源的位置和时域资源的位置，从而减小了所述终端设备监测用于承载和调度专用消息的PDCCH的计算复杂度。
本申请提供的接收PDCCH的方法，终端设备根据预设信息或网络设备发送的指示信息确定至少两种子载波间隔，并接收基于该至少两种子载波间隔的PDCCH，从而解决了如何接入以及驻留在多子载波间隔通信系统的问题。
上述实施例主要从终端设备和网络设备之间交互的角度对本申请的方案进行了介绍。可以理解的是，各个设备为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计 约束条件。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。
本申请可以根据上述方法示例对终端设备和网络设备进行功能单元的划分，例如，可以对应各个功能划分各个功能单元，也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。需要说明的是，本申请中对单元的划分是示意性的，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。
在采用集成的单元的情况下，图4示出了上述实施例中所涉及的网络设备的一种可能的结构示意图。网络设备400包括：处理单元402和通信单元403。处理单元402用于对网络设备400的动作进行控制管理，例如，处理单元402用于支持网络设备400执行图2的S210和/或用于本文所描述的技术的其它过程。通信单元403用于支持网络设备400与其它网络实体的通信，例如与方法300中的终端设备之间的通信。网络设备400还可以包括存储单元401，用于存储网络设备400的程序代码和数据。
例如，所述处理单元402用于将第一下行物理控制信道PDCCH映射在第一时频资源上的A个控制信道传输单元，以及所述网络设备将第二PDCCH映射在第二时频资源上的B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2；所述通信单元403用于发送所述处理单元402映射在控制信道传输单元上的所述第一PDCCH和所述第二PDCCH。
处理单元402可以是处理器或控制器，例如可以是中央处理器(central processing unit，CPU)，通用处理器，数字信号处理器(digital signal processor，DSP)，专用集成电路(application specific integrated circuit，ASIC)，现场可编程门阵列(field programmable gate array，FPGA)或者其它可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信单元403可以是收发器或收发电路。存储单元401可以是存储器。
当处理单元402为处理器，通信单元403为收发器，存储单元401为存储器时，本申请所涉及的网络设备可以为图5所示的网络设备。
参阅图5所示，该网络设备510包括：处理器512、收发器513、存储器511。其中，收发器513、处理器512以及存储器511可以通过内部连接通路相互通信，传递控制和/或数据信号。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的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。
因此，本申请提供的网络设备，通过发送至少两种子载波间隔不同的PDCCH，并指示至少一种子载波间隔以及该至少一种子载波间对应的PDCCH可以占用的频域资源的位置和时域资源的位置，从而支持多种子载波间隔的通信系统的PDCCH的传输，并解决了在多子载波间隔的通信系统中如何调度和/或配置终端设备的问题。
在采用集成的单元的情况下，图6示出了上述实施例中所涉及的终端设备的一种可能的结构示意图。终端设备600包括：处理单元602和通信单元603。处理单元602用于对终端设备600的动作进行控制管理，例如，处理单元602用于支持终端设备600执行图3的S310和/或用于本文所描述的技术的其它过程。通信单元603用于支持终端设备600与其它网络实体的通信，例如与方法200中的网络设备之间的通信。终端设备600还可以包括存储单元601，用于存储终端设备600的程序代码和数据。
例如，所述通信单元603用于在第一时频资源上接收网络设备发送的第一PDCCH，以及所述终端设备在第二时频资源上接收所述网络设备发送的第二PDCCH，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，所述第一PDCCH占用A个控制信道传输单元，所述第二PDCCH占用B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2；所述处理单元602用于解调所述通信单元603接收的所述第一PDCCH和所述第二PDCCH。
处理单元602可以是处理器或控制器，例如可以是CPU，通用处理器，DSP，ASIC，FPGA或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框，模块和电路。所述处理器也可以是实现计算功能的组合，例如包含一个或多个微处理器组合，DSP和微处理器的组合等等。通信单元603可以是收发器或收发电路。存储单元601可以是存储器。
当处理单元602为处理器，通信单元603为收发器，存储单元601为存储器时，本申请所涉及的终端设备可以为图7所示的终端设备。
参阅图7所示，该终端设备710包括：处理器712、收发器713、存储器711。其中，收发器713、处理器712以及存储器711可以通过内部连接通路相互通信，传递控制和/或数据信号。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的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。
因此，本申请提供的终端设备，根据预设信息或网络设备发送的指示信息确定至少两种子载波间隔，并接收基于该至少两种子载波间隔的PDCCH，从而解决了如何接入以及驻留在多子载波间隔通信系统的问题。
在本申请中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请的实施过程构成任何限定。
另外，本文中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
结合本申请公开内容所描述的方法或者算法的步骤可以硬件的方式来实现，也可以是由处理器执行软件指令的方式来实现。软件指令可以由相应的软件模块组成，软件模块可以被存放于随机存取存储器(random access memory，RAM)、闪存、只读存储器(read only memory，ROM)、可擦除可编程只读存储器(erasable programmable ROM，EPROM)、电可擦可编程只读存储器(electrically EPROM，EEPROM)、寄存器、硬盘、移动硬盘、 只读光盘(CD-ROM)或者本领域熟知的任何其它形式的存储介质中。一种示例性的存储介质耦合至处理器，从而使处理器能够从该存储介质读取信息，且可向该存储介质写入信息。当然，存储介质也可以是处理器的组成部分。处理器和存储介质可以位于ASIC中。另外，该ASIC可以位于终端设备中。当然，处理器和存储介质也可以作为分立组件存在于终端设备和网络设备中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本申请所述的流程或功能。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，或者通过所述计算机可读存储介质进行传输。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，数字通用光盘(digital versatile disc，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
以上所述的具体实施方式，对本申请的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本申请的具体实施方式而已，并不用于限定本申请的保护范围，凡在本申请的技术方案的基础之上，所做的任何修改、等同替换、改进等，均应包括在本申请的保护范围之内。

Claims (23)

  1. 一种发送物理下行控制信道的方法，其特征在于，包括：
    网络设备将第一物理下行控制信道PDCCH映射在第一时频资源上的A个控制信道传输单元上，以及所述网络设备将第二PDCCH映射在第二时频资源上的B个控制信道传输单元上，所述A为正整数且A≥2，所述B为正整数且B≥2，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2；
    所述网络设备发送所述第一PDCCH和所述第二PDCCH。
  2. 根据权利要求1所述的方法，其特征在于，所述网络设备将所述第一PDCCH和所述第二PDCCH分别映射在第一时频资源和第二时频资源之前，所述方法还包括：
    所述网络设备从至少两种子载波间隔中确定所述第一子载波间隔和所述第二子载波间隔。
  3. 根据权利要求1或2所述的方法，其特征在于，所述网络设备发送所述第一PDCCH和所述第二PDCCH之前，所述方法还包括：
    所述网络设备发送承载于系统消息或广播消息中的第一信息，所述第一信息用于指示所述第一子载波间隔和/或所述第二子载波间隔。
  4. 根据权利要求3所述的方法，其特征在于，所述第一信息还用于指示所述第一PDCCH和/或所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
  5. 根据权利要求1或2所述的方法，其特征在于，所述网络设备发送所述第一PDCCH和所述第二PDCCH之前，所述方法还包括：
    所述网络设备向终端设备发送第二信息，所述第二信息用于指示所述第一子载波间隔和所述第二子载波间隔。
  6. 根据权利要求5所述的方法，其特征在于，所述第二信息还用于指示所述第一PDCCH和所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
  7. 一种接收物理下行控制信道的方法，其特征在于，所述方法包括：
    终端设备在第一时频资源上接收网络设备发送的第一物理下行控制信道PDCCH，以及所述终端设备在第二时频资源上接收所述网络设备发送的第二PDCCH，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，所述第一PDCCH占用A个控制信道传输单元，所述第二PDCCH占用B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2；
    所述终端设备解调所述第一PDCCH和所述第二PDCCH。
  8. 根据权利要求7所述的方法，其特征在于，所述终端设备接收所述第一PDCCH和所述第二PDCCH之前，所述方法还包括：
    所述终端设备接收所述网络设备发送的第二信息，所述第二信息用于指示所述第一子 载波间隔和所述第二子载波间隔；
    所述终端设备根据所述第二信息确定所述第一子载波间隔和所述第二子载波间隔。
  9. 根据权利要求8所述的方法，其特征在于，所述第二信息还用于指示所述第一PDCCH可以占用的频域资源的位置和时域资源的位置，以及所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
  10. 一种网络设备，其特征在于，包括：处理单元和通信单元，
    所述处理单元用于将第一物理下行控制信道PDCCH映射在第一时频资源上的A个控制信道传输单元，以及所述网络设备将第二PDCCH映射在第二时频资源上的B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2；
    所述通信单元用于发送所述处理单元映射在控制信道传输单元上的所述第一PDCCH和所述第二PDCCH。
  11. 根据权利要求10所述的网络设备，其特征在于，所述处理单元还用于：从至少两种子载波间隔中确定所述第一子载波间隔和所述第二子载波间隔。
  12. 根据权利要求10或11所述的网络设备，其特征在于，所述通信单元还用于：发送承载于系统消息或广播消息中的第一信息，所述第一信息用于指示所述第一子载波间隔和/或所述第二子载波间隔。
  13. 根据权利要求12所述的网络设备，其特征在于，所述第一信息还用于指示所述第一PDCCH和/或所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
  14. 根据权利要求10或11所述的网络设备，其特征在于，所述通信单元还用于：向终端设备发送第二信息，所述第二信息用于指示所述第一子载波间隔和所述第二子载波间隔。
  15. 根据权利要求14所述的网络设备，其特征在于，所述第二信息还用于指示所述第一PDCCH和所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
  16. 一种终端设备，其特征在于，包括：处理单元和通信单元，
    所述通信单元用于在第一时频资源上接收网络设备发送的第一物理下行控制信道PDCCH，以及所述终端设备在第二时频资源上接收所述网络设备发送的第二PDCCH，其中，所述第一时频资源的子载波间隔为第一子载波间隔，所述第二时频资源的子载波间隔为第二子载波间隔，所述第一子载波间隔与所述第二子载波间隔不同，所述第一PDCCH占用A个控制信道传输单元，所述第二PDCCH占用B个控制信道传输单元，所述A为正整数且A≥2，所述B为正整数且B≥2，每个所述控制信道传输单元包括N个资源粒子，所述N个资源粒子位于相同的时域符号内，所述N为正整数且N≥2；
    所述处理单元用于解调所述通信单元接收的所述第一PDCCH和所述第二PDCCH。
  17. 根据权利要求16所述的终端设备，其特征在于，
    所述通信单元还用于：接收所述网络设备发送的第二信息，所述第二信息用于指示所述第一子载波间隔和所述第二子载波间隔；
    所述处理单元还用于：根据所述第二信息确定所述第一子载波间隔和所述第二子载波 间隔。
  18. 根据权利要求17所述的终端设备，其特征在于，所述第二信息还用于指示所述第一PDCCH可以占用的频域资源的位置和时域资源的位置，以及所述第二PDCCH可以占用的频域资源的位置和时域资源的位置。
  19. 一种可读存储介质，其特征在于，所述可读存储介质中存储程序，所述程序在执行时，权利要求1至9中任一项所述的方法步骤被执行。
  20. 一种通信装置，其特征在于，包括：
    与程序指令相关的硬件，所述硬件用于执行权利要求1至6中任一项所述的方法步骤。
  21. 一种通信装置，其特征在于，包括：
    与程序指令相关的硬件，所述硬件用于执行权利要求7至9中任一项所述的方法步骤。
  22. 一种终端设备，其特征在于，包括：
    处理器和存储器，所述存储器用于存储程序，所述处理器用于执行所述程序，所述程序在执行时，能够实现权利要求1至6中任一项所述的方法。
  23. 一种网络设备，其特征在于，包括：
    处理器和存储器，所述存储器用于存储程序，所述处理器用于执行所述程序，所述程序在执行时，能够实现权利要求7至9中任一项所述的方法。
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