WO2020030085A1 - 一种通信方法及设备 - Google Patents

一种通信方法及设备 Download PDF

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Publication number
WO2020030085A1
WO2020030085A1 PCT/CN2019/099933 CN2019099933W WO2020030085A1 WO 2020030085 A1 WO2020030085 A1 WO 2020030085A1 CN 2019099933 W CN2019099933 W CN 2019099933W WO 2020030085 A1 WO2020030085 A1 WO 2020030085A1
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WO
WIPO (PCT)
Prior art keywords
terminal
search space
pdcch
monitoring
monitoring parameter
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PCT/CN2019/099933
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English (en)
French (fr)
Inventor
薛祎凡
才宇
李晓翠
王键
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP19847074.2A priority Critical patent/EP3820221B1/en
Priority to US17/267,730 priority patent/US20210329481A1/en
Priority to KR1020217005899A priority patent/KR20210038643A/ko
Priority to JP2021505830A priority patent/JP7207782B2/ja
Publication of WO2020030085A1 publication Critical patent/WO2020030085A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • 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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the field of communication technologies, and in particular, to a communication method and device.
  • the base station sends downlink control information (DCI) to the terminal through a physical downlink control channel (PDCCH) to instruct the terminal to receive time-frequency resources, modulation and coding schemes (MCS) for downlink data. ), Redundancy version (RV) and other configuration parameters.
  • DCI downlink control information
  • PDCCH physical downlink control channel
  • MCS modulation and coding schemes
  • RV Redundancy version
  • blind detection is performed on multiple PDCCH candidate positions in the downlink control region.
  • a group of PDCCH candidate positions form a search space.
  • the base station can configure one or more search spaces for the terminal.
  • the terminal monitors in one or more search spaces configured to monitor whether there is a DCI sent to the terminal.
  • the base station will also configure the terminal to monitor the PDCCH parameters in each search space, such as the monitoring period, monitoring time slot, PDCCH aggregation level, maximum number of blind detections, and so on.
  • the base station may send one or more search spaces configured for the terminal and monitoring parameters corresponding to each search space to the terminal through radio resource control (RRC) signaling; the terminal may Monitoring parameters, monitor the PDCCH in the corresponding search space.
  • RRC radio resource control
  • the base station configures the search space and monitoring parameters for the terminal, it only determines the search space and monitoring parameters that the terminal currently needs, and the configuration is not flexible enough.
  • the present application provides a communication method and device for sending one or more sets of search spaces and multiple sets of PDCCH monitoring parameters to a terminal, so that the terminal monitors the PDCCH on a set of search spaces according to one set of monitoring parameters.
  • this application provides a communication method, including: a network device sending first information to a terminal, the first information used to indicate a first search space and a second search space, and a first monitoring parameter and a second A monitoring parameter, the first monitoring parameter is a monitoring parameter for the terminal to monitor the PDCCH in the first search space, and the second monitoring parameter is a monitoring parameter for the terminal to monitor the PDCCH in the second search space
  • the first search space is different from the second search space, or the first search space is the same as the second search space, but the first monitoring parameter is different from the second monitoring parameter.
  • the network device sends the PDCCH according to the first monitoring parameter in the first search space after sending the first information; the terminal receives the first information according to the first monitoring parameter in the first search after receiving the first information Monitor the PDCCH.
  • the network device sends a PDCCH according to the second monitoring parameter in the second search space; after receiving the first information, the terminal sends the PDCCH according to the second search within the second search.
  • the monitoring parameter monitors the PDCCH.
  • the network device sends the search space and corresponding monitoring parameters to the terminal, and the terminal monitors in all search spaces indicated by the network device; if the search space or monitoring parameters need to be changed, the network device needs to change the The search space and all monitoring parameters are resent to the terminal.
  • the first information sent by the network device may carry multiple sets of search spaces and multiple sets of monitoring parameters, and the terminal monitors the PDCCH according to a set of monitoring parameters in one of the search spaces instead of in all search spaces.
  • the PDCCH is monitored internally; if the search space or monitoring parameters need to be changed, the network device does not need to resend the search space and all monitoring parameters, and only instructs the terminal to switch the search space or monitoring parameters.
  • the network device sends second information to the terminal, which is used to instruct the terminal to monitor the PDCCH according to the first monitoring parameter in the first search space, or is used for Instruct the terminal to monitor the PDCCH according to the second monitoring parameter in the second search space.
  • the network device may send the second information to the terminal, directly instructing the terminal to use which monitoring parameters in which search space to monitor the PDCCH. For example, the network device may pre-configure the first search space and index 1 corresponding to the first monitoring parameter, and the second search space and index 2 corresponding to the second monitoring parameter. If the second indication information includes index 1, the terminal is instructed to perform the first search. Monitor the PDCCH in space according to the first monitoring parameter.
  • the network device may send the second information through DCI, media access control layer control element (MAC, CE), and RRC signaling. To the terminal.
  • DCI media access control layer control element
  • CE media access control layer control element
  • RRC Radio Resource Control
  • the network device when the terminal is in the first working mode, the network device sends the PDCCH according to the first monitoring parameter in the first search space, and the terminal is in the first search space. Monitor the PDCCH according to the first monitoring parameter; when the terminal is in the second working mode, the network device sends the PDCCH according to the second monitoring parameter in the second search space, and the terminal monitors the PDCCH according to the second monitoring parameter in the second search space.
  • the selected search space and monitoring parameters are determined according to the working mode of the terminal.
  • the network device may also send third information to the terminal to indicate the working mode of the terminal; or the working mode of the terminal may not require an instruction from the network device
  • a working mode switching policy is configured in the terminal and the network device in advance, and the terminal and the network device can determine the current working mode of the terminal according to the working mode switching policy.
  • the network device may send the foregoing third information manner to the terminal through DCI, MAC CE, or RRC information.
  • the network device when the terminal is configured with discontinuous reception (DRX), the network device sends the PDCCH according to the first monitoring parameter in the first search space. , The terminal monitors the PDCCH according to the first monitoring parameter in the first search space; when the terminal is not configured with DRX, the network device sends the PDCCH in the second search space according to the second monitoring parameter, and the terminal according to the second search space in the second search space The monitoring parameter monitors the PDCCH.
  • DRX discontinuous reception
  • the network device when the terminal is configured with the first DRX parameter, the network device sends the PDCCH according to the first monitoring parameter in the first search space, and the terminal is in the first The PDCCH is monitored according to the first monitoring parameter in the search space; when the terminal is configured with the second DRX parameter, the network device sends the PDCCH according to the second monitoring parameter in the second search space, and the terminal according to the second monitoring parameter in the second search space Monitor the PDCCH.
  • the foregoing monitoring parameters include one or more of the following parameters: Format of the monitored DCI; monitoring period; monitoring time slot; duration of monitoring in the monitoring period; start symbol to be monitored in the time slot to be monitored; aggregation level of the monitored PDCCH and PDCCH candidates to be monitored at the aggregation level The number of locations.
  • an embodiment of the present application provides a terminal.
  • the terminal may include a receiving unit and a processing unit, configured to implement functions performed by the terminal in the method according to any one of the first aspect.
  • an embodiment of the present application provides a network device.
  • the network device may include a sending unit and a processing unit, which are configured to implement functions performed by the network device in the method according to any one of the first aspects.
  • an embodiment of the present application provides a terminal device.
  • the terminal may include a processor, a memory, and a communication interface.
  • the memory is used to store a program.
  • the processor calls a program stored in the memory and executes, for example, a communication interface through the communication interface. The function performed by the terminal in the method according to any one of the first aspects.
  • an embodiment of the present application provides a network device.
  • the network device may include a processor, a memory, and a communication interface.
  • the memory is used to store a program.
  • the processor calls a program stored in the memory and executes the program through the communication interface. The function performed by the network device in the method according to any one of the first aspects.
  • an embodiment of the present application provides a communication system including the terminal according to the second aspect and the network device according to the third aspect; or the communication system may also include the terminal according to the fourth aspect And the network device described in the fifth aspect.
  • an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the instructions are run on a computer, the computer is caused to execute any one of the first aspects
  • the function performed by the terminal in the method or causes the computer to perform the function performed by the network device in the method according to any one of the first aspects.
  • an embodiment of the present application provides a computer program product containing instructions, which when executed on a computer, causes the computer to perform a function performed by a terminal in the method according to any one of the first aspects, or causes The computer performs the functions performed by the network device in the method according to any one of the first aspects.
  • the present application provides a chip that is connected to a memory and is configured to read and execute a software program stored in the memory to implement a function performed by a terminal in any one of the methods in the first aspect. Or implement the function performed by the network device in the method according to any one of the first aspects.
  • FIG. 1 is a schematic diagram of an application scenario provided by an embodiment of the present application
  • FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 3 is a second schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 4 is a third schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of DRX provided by an embodiment of the present application.
  • FIG. 6 is a fourth schematic flowchart of a communication method according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a network device according to an embodiment of the present application.
  • FIG. 9 is a second schematic structural diagram of a terminal according to an embodiment of the present application.
  • FIG. 10 is a second schematic structural diagram of a network device according to an embodiment of the present application.
  • the base station may use RRC signaling to send one or more search spaces configured for the terminal and the monitoring parameters corresponding to each search space to the terminal; the terminal monitors the PDCCH in the corresponding search space according to the received monitoring parameters.
  • the base station configures the search space and monitoring parameters for the terminal, it only determines the search space and monitoring parameters that the terminal currently needs, and the configuration is not flexible enough.
  • the embodiments of the present application provide a communication method and device.
  • the method and device can be applied to a 5th generation (5G) system, a long term evolution (LTE) system, or other communication systems.
  • the embodiment of the present application can be applied to the scenario shown in FIG. 1.
  • the network device in the embodiment of the present application may be a base station, or other means for converting the received air frame to and from an internet protocol (IP) packet to serve as a router between the wireless terminal device and the rest of the access network.
  • IP internet protocol
  • the rest of the access network can include IP networks.
  • Network equipment can also be used to coordinate attribute management of the air interface.
  • the names of the devices with base station functions may be different, for example, the Global System for Mobile Communication (GSM) or code division multiple access (code division) Base stations in multiple access (CDMA) systems are referred to as base stations (BTS), wideband code division multiple access (WCDMA) base stations are referred to as node B, LTE systems
  • GSM Global System for Mobile Communication
  • CDMA code division multiple access
  • BTS base stations
  • WCDMA wideband code division multiple access
  • LTE LTE systems
  • the base station in the process is called an evolutionary base station (eNB)
  • eNB evolutionary base station
  • general base station B general base station
  • the embodiment of the present application does not limit this.
  • the terminal equipment in the embodiments of the present application may refer to user equipment (UE), access terminal equipment, user unit, user station, mobile station, mobile station, remote station, remote terminal device, mobile device, user terminal device, Terminal equipment, wireless communication equipment, user agent or user device.
  • Terminal equipment can also be cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital processing (PDA), and wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or public land mobile network (PLMN) in future evolution Terminal equipment and the like are not limited in this embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a communication method according to an embodiment of the present application. As shown in the figure, the method may include the following steps:
  • Step 201 The network device sends the first information to the terminal.
  • the first information is used to indicate the first search space and the second search space, and the first monitoring parameter and the second monitoring parameter.
  • the first monitoring parameter is a monitoring parameter for the terminal to monitor the PDCCH in the first search space
  • the second monitoring The parameter is a monitoring parameter for the terminal to monitor the PDCCH in the second search space.
  • the first search space and the second search space may be the same search space, but the first monitoring parameter and the second monitoring parameter are different, that is, the terminal can perform the same search in different periods, different working modes, and different scenarios.
  • the PDCCH is monitored in space according to different monitoring parameters.
  • the first search space and the second search space may be different search spaces, but the first monitoring parameter may be the same as the second monitoring parameter, that is, the terminal may be in different time periods, different working modes, and different scenarios in different scenarios.
  • the PDCCH is monitored in the search space according to the same monitoring parameters.
  • the first search space is different from the second search space
  • the first monitoring parameter is different from the second monitoring parameter, that is, the terminal is in different search spaces in different time periods, different working modes, and different scenarios according to each The monitoring parameters of the search space monitor the PDCCH.
  • Step 202 The network device sends the PDCCH according to the first monitoring parameter in the first search space, and the terminal monitors the PDCCH according to the first monitoring parameter in the first search space; or the network device sends the PDCCH according to the second monitoring parameter in the second search space.
  • PDCCH the terminal monitors the PDCCH according to the second monitoring parameter in the second search space.
  • the network device sends the search space and corresponding monitoring parameters to the terminal, and the terminal monitors in all search spaces indicated by the network device; if the search space or monitoring parameters need to be changed, the network device needs to change the The search space and all monitoring parameters are resent to the terminal.
  • the first information sent by the network device may carry multiple sets of search spaces and multiple sets of monitoring parameters, and the terminal monitors the PDCCH according to the corresponding monitoring parameters in one of the search spaces, rather than in all search spaces.
  • the PDCCH is monitored internally; if the search space or monitoring parameters need to be changed, the network device does not need to resend the search space and all monitoring parameters, and only instructs the terminal to switch the search space or monitoring parameters.
  • the first message described in the foregoing embodiment includes a first search space, a second search space, a first monitoring parameter, and a second monitoring parameter, but it does not mean that the first message includes only such information.
  • the first message includes It may also include a third search space, a third monitoring parameter, and so on.
  • the network device may further indicate the third search space and the third monitoring parameter, and belong to the first monitoring group together with the first search space and the first monitoring parameter, that is, ,
  • the terminal may monitor the PDCCH in the first search space according to the first monitoring parameter and the third search space in the same period according to the third monitoring parameter; or the network device may instruct the third search space and the third monitoring parameter , Belongs to the second monitoring group with the second search space and the second monitoring parameter, that is, the terminal can monitor the PDCCH in the second search space according to the second monitoring parameter and the third search space in the same period according to the third monitoring
  • the parameter monitors the PDCCH.
  • the network device may also indicate that the third search space and the third monitoring parameter belong to the third monitoring group, that is, when the terminal monitors the PDCCH according to the third monitoring parameter in the third search space, the terminal does not The PDCCH is monitored in the first search space and is not monitored in the second search space according to the second monitoring parameter.
  • the above monitoring parameters may include one or any combination of the following parameters:
  • Monitored DCI format The DCI transmitted by the network device through the PDCCH has multiple formats, and different formats are adopted according to different purposes and scenarios. For example, the format of the DCI used to schedule a physical uplink shared channel (PUSCH) and the physical downlink shared channel (PDSCH) may be different.
  • the network device may instruct the terminal to monitor one or more formats of DCI in the corresponding search space.
  • the network device may instruct the terminal to monitor the DCI formats in the first search space as DCI-format0-0-AndFormat1-0, DCI -format2-0, DCI-format2-1, DCI-format2-2, DCI-format2-3, and the network device instructs the terminal to monitor the DCI formats monitored in the second search space as DCI-format0-0-AndFormat1-0, DCI- format2-0.
  • the network device can configure a monitoring period for the terminal, and instruct the terminal to monitor the PDCCH in the search space according to the monitoring period.
  • the monitoring period can be a time slot. For example, if the network device indicates that the monitoring period is 8, it means that the monitoring period is 8 time slots.
  • the unit of the monitoring period is not limited to a time slot, and may be a millisecond (ms), a sub-frame, or the like.
  • Monitoring time slot used to indicate the time slot for the terminal to monitor the PDCCH.
  • the terminal monitors one time slot in one monitoring period. For example, if the network device can indicate that the monitoring period is 10 time slots, the monitoring time slot is time slot 0.
  • the terminal can also monitor multiple time slots in one monitoring cycle. If the monitored multiple time slots are consecutive time slots, the parameters of the monitoring time slot can further include the monitoring start time slot and the monitoring duration, which respectively represent the terminal.
  • a network device can also use a bitmap to indicate which timeslots are being monitored in a monitoring cycle, that is, each bit corresponds to monitoring For a time slot in a cycle, the value of this bit indicates whether to monitor the time slot, and is used to instruct the terminal to monitor one time slot, multiple continuous time slots, or multiple non-continuous time slots in a monitoring cycle.
  • the time unit indicated by the network device may also be milliseconds (ms), subframes, and so on, then the network device may also send parameters such as the monitoring time (ms) and the monitoring subframes.
  • the two parameters of the monitoring period and the monitoring slot are sent to the terminal for use together, and are sent to the terminal through the "monitoring slot period and offset (monitoringSlotPeriodicityAndOffset)" parameter.
  • Duration of monitoring in the time slot to be monitored It is used to indicate the duration of the terminal monitoring in a time slot that needs to be monitored, and its unit can be a symbol.
  • Monitoring starting symbol (monitoringSymbolsWithinSlot) in the time slot to be monitored used to indicate that the terminal monitors the starting symbol of the PDCCH in the time slot that needs to be monitored.
  • a slot includes 14 symbols, corresponding to 14 bits. If the value of the 14 bits is 10000001000000, it means that the terminal starts monitoring the PDCCH in symbols 0 and 7 in a slot to be monitored. Further, if the value of duration is 3, that is, monitoring continues for 3 symbols, then the terminal monitors the PDCCH on symbols 0, 1, 1, 2 and 7, 7, and 9.
  • the aggregation level indicates the number of control channel elements (CCEs) included in a PDCCH. If a PDCCH is composed of one CCE, its aggregation level is 1. If a PDCCH is composed of two CCEs, then Its aggregation level is 2, and so on. Commonly used aggregation levels are 1, 2, 4, 8, 16.
  • the number of monitored PDCCH candidate positions indicates the maximum number of PDCCH candidate positions monitored by the terminal in the search space. For example, if a search space includes 8 CCEs, for a PDCCH with an aggregation level of 1, there are 8 PDCCH candidate positions. If the number of PDCCH candidate positions monitored by the network device is 6, it means that the terminal is The rule selects 6 from 8 PDCCH candidate positions for monitoring.
  • SearchSpaceType indicates whether the search space indicated by the network device is a common search space (common) or a user equipment-specific search space (UE-specific).
  • the network device may further send second information to the terminal, to instruct the terminal to monitor the PDCCH according to the first monitoring parameter in the first search space; or to instruct the terminal The PDCCH is monitored in the second search space according to the second monitoring parameter. In this manner, the network device determines and directly instructs which monitoring parameters the terminal uses in which search space to monitor the PDCCH.
  • the network device may pre-configure the first search space and the first monitoring parameter corresponding to index 1, the second search space and the second monitoring parameter corresponding to index 2, and the third search space and the third monitoring parameter corresponding to index 3. If the network device determines that the terminal should monitor the PDCCH according to the first monitoring parameter in the first search space and determines that the network device sends the PDCCH according to the first monitoring parameter in the first search space, the second message sent by the network device may include an index 1 instructions. If the network device determines that the terminal application monitors the PDCCH according to the second monitoring parameter in the second search space and monitors the PDCCH according to the third monitoring parameter in the third search space, the second message sent by the network device may include the index 2 and the index 3 instructions.
  • the network device may pre-configure the first search space and the first monitoring parameter, the third search space and the third monitoring parameter correspond to the monitoring group 1, and the second search space and the second monitoring parameter correspond to the monitoring group 2. If the network device determines that the network device sends the PDCCH according to the monitoring parameters in the monitoring group 1, and the terminal should monitor the PDCCH according to the monitoring parameters in the monitoring group 1, the second information sent by the network device may include indication information of the monitoring group 1.
  • the network device may send the first message and the second message to the terminal in the same signaling.
  • the first message is usually sent to the terminal through RRC signaling, and then the network device can send the first message and the second message together in the RRC signaling to the terminal.
  • the network device may also send the first message and the second message to the terminal through other signaling, which is not limited in the embodiment of the present application.
  • the network device may also send the first message and the second message to the terminal through different signaling. Then, when the network device sends the second message, it can send the second message to the terminal through DCI, MAC, CE, or RRC signaling.
  • DCI signaling belongs to physical layer signaling
  • MAC CE signaling belongs to MAC layer signaling
  • RRC signaling belongs to RRC layer signaling
  • the terminal resolves the signaling through physical layer analysis, MAC layer analysis, and RRC layer analysis in order. .
  • the delay is shorter; if the second message is sent via RRC signaling, the delay is longer; if the second message is sent via MAC CE signaling, the delay is passing Between DCI signaling and RRC signaling.
  • the network device may also send an instruction message to the terminal when it is determined that the search space and monitoring parameters of the terminal monitoring PDCCH need to be changed, to indicate the search space and monitoring parameters after the terminal is transformed.
  • the indication message is similar to the second message, and may include the transformed search space and index information of monitoring parameters, or the transformed monitoring group index information.
  • the indication message may also be sent to the terminal through DCI, MAC, CE, and RRC signaling.
  • the RRC reconfiguration process sends the transformed search space and corresponding monitoring parameters to the terminal, which results in a large signaling overhead.
  • the network device has sent multiple possible search spaces and corresponding monitoring parameters to the terminal in the first message, and the indication message may include only the transformed search space and index information corresponding to the monitoring parameters. , Reducing signaling overhead.
  • the above indication information is sent through DCI and MAC CE information, it also helps to reduce delay.
  • the foregoing step 202 may include two situations as shown in FIG. 3. specifically:
  • Step 202a If the terminal is in the first working mode, the network device sends the PDCCH according to the first monitoring parameter in the first search space, and the terminal monitors the PDCCH according to the first monitoring parameter in the first search space.
  • Step 202b If the terminal is in the second working mode, the network device sends the PDCCH according to the second monitoring parameter in the second search space, and the terminal monitors the PDCCH according to the second monitoring parameter in the second search space.
  • the network device may pre-configure the first search space and the first monitoring parameter to correspond to the first working mode, and the second search space and the second monitoring parameter to correspond to the second working mode. Then, the network device and the terminal may Working mode, determine the search space and monitoring parameters used to send and monitor the PDCCH.
  • the working parameters corresponding to the first working mode include a first search space and a first monitoring parameter, but are not limited thereto.
  • the first working mode may also be related to parameters such as the working bandwidth of the terminal, the number of activated carriers, and the number of transmit and receive antennas when performing multiple-input multiple-output (MIMO) communication.
  • MIMO multiple-input multiple-output
  • the network device when the network device is configured for the terminal to work in the first working mode: the operating bandwidth is 20 MHz, 3 carriers are activated, the PDCCH is monitored in the search space 1 according to the monitoring parameter 1, and the terminal is configured at the second When working in the working mode: the working bandwidth is 10 MHz, 1 carrier is activated, and the PDCCH is monitored according to the monitoring parameter 1 in the search space 1 and so on. Then, when the terminal determines that the work is switched from the first working mode to the second working mode, the terminal monitors the PDCCH in the search space 2 according to the monitoring parameter 2, the working bandwidth is switched from 20MHz to 10MHz, and the active carrier is switched from active 3 to active 1 Carriers.
  • various parameters configured by the network device can be sent to the terminal through the same signaling or multiple signalings.
  • the network device may send a third message to the terminal to indicate a working mode of the terminal.
  • the network device may be pre-configured with a terminal working mode switching policy, and the network device may determine the current working mode of the terminal according to the working mode switching policy, and the current network environment, the state of the terminal, and the needs of the terminal.
  • the network device after sending the third information, the network device according to the first search space A monitoring parameter sends the PDCCH; if the third information indicates that the terminal works in the second working mode, the terminal monitors the PDCCH according to the second monitoring parameter in the second search space. Accordingly, the network device sends the third information in the first search space.
  • the PDCCH is sent in the two search spaces according to the second monitoring parameter.
  • the network device may send the third message to the terminal through DCI, MAC, CE, or RRC signaling.
  • both the network device and the terminal may be pre-configured with a terminal working mode switching policy, and both the network device and the terminal may be based on the working mode switching policy, as well as the current network environment, terminal status, and terminal requirements Factors to determine the current working mode of the terminal. For example, if the network device does not send DCI to the terminal within a preset period of time, the terminal and the network device may determine to switch the working mode of the terminal according to a preset working mode switching policy to reduce the number of times the terminal monitors the PDCCH. The network device may not necessarily send a message to the terminal to indicate the working mode.
  • the terminal may be pre-configured with a working mode switching policy.
  • the terminal determines the current working mode according to the working mode switching policy, and the current network environment, terminal status, and terminal requirements, and determines the switching.
  • the terminal may send a fourth message to the network device to notify the network device of the switched working mode, so that the terminal and the network device send and monitor the PDCCH according to the same monitoring parameters in the same search space.
  • the fourth message may be sent to the network device through uplink control information (UCI) and MAC CE CE RRC signaling. For example, when the power of the terminal drops to a preset threshold, the terminal can switch to the power saving mode, which corresponds to search space 1 and monitoring parameter 1.
  • UCI uplink control information
  • MAC CE CE RRC signaling For example, when the power of the terminal drops to a preset threshold, the terminal can switch to the power saving mode, which corresponds to search space 1 and monitoring parameter 1.
  • the maximum number of times the terminal monitors the PDCCH is greater than the maximum monitoring in other operating modes. Less often. Then the terminal monitors the PDCCH in the search space 1 according to the monitoring parameter 1; the terminal sends a fourth message to the network device, which is used to instruct the terminal to switch to the power saving mode, and the network device sends the PDCCH in the search space 1 according to the monitoring parameter .
  • the network device may send a response message to the terminal to indicate whether the network device has successfully switched the working mode, and ensure that the terminal and the network device are in the same working mode.
  • the response message sent by the network device may be used to indicate whether the handover is successful. For example, "1" indicates that the handover was successful, and "0" indicates that the handover failed; or, the network device may also carry in the response message.
  • Information about the operating mode currently determined by the network device For example, if the network device switches from working mode 1 to working mode 2, the response message carries the information of working mode 2. If the switching is not successful, the response message carries the working mode.
  • the response message is similar to the third message in the foregoing embodiment, and is used to instruct the terminal to work in the corresponding work mode according to the work mode information carried in the message.
  • step 202 may also include the two cases shown in FIG. 4. specifically:
  • Step 202c If the terminal is configured with DRX, the network device sends the PDCCH according to the first monitoring parameter in the first search space, and the terminal monitors the PDCCH according to the first monitoring parameter in the first search space.
  • Step 202d If the terminal is not configured with DRX, the network device sends the PDCCH according to the second monitoring parameter in the second search space, and the terminal monitors the PDCCH according to the second monitoring parameter in the second search space.
  • the network device may pre-configure the case where the terminal corresponding to the first search space and the first monitoring parameter is configured with DRX, and the case where the terminal corresponding to the second search space and the second monitoring parameter is not configured with DRX, then the network device And the terminal may determine the search space and monitoring parameters used for sending and monitoring the PDCCH according to whether the terminal is currently configured with DRX.
  • a terminal in an RRC connected state can be configured with DRX, that is, the terminal does not continuously monitor the PDCCH, but monitors the PDCCH during the on-duration, and does not monitor the PDCCH during the dormancy period (DRX). Monitor the PDCCH to reduce the power consumption of the terminal, as shown in Figure 5.
  • An active period and a dormant period constitute a DRX cycle.
  • the terminal may monitor the PDCCH according to the monitoring period in the foregoing embodiment. Due to the long monitoring time, the monitoring parameter may be monitored using a monitoring parameter that monitors the PDCCH less frequently in one monitoring period; if the terminal is configured With DRX, the PDCCH can be monitored using monitoring parameters that monitor the PDCCH more times in one monitoring cycle.
  • monitoring the PDCCH on certain time slots in a monitoring period in the foregoing embodiment refers to further setting a monitoring period in the active period, that is, a part of the time slot in the active period of the terminal
  • the PDCCH is monitored on the network, and is not monitored on other time slots in the active period.
  • the configured DRX parameters may also be changed according to different needs in different scenarios.
  • the above step 202 may also include the two cases shown in FIG. 6. specifically:
  • Step 202e If the terminal is configured with the first DRX parameter, the network device sends the PDCCH according to the first monitoring parameter in the first search space, and the terminal monitors the PDCCH according to the first monitoring parameter in the first search space.
  • Step 202f If the terminal is configured with the second DRX parameter, the network device sends the PDCCH according to the second monitoring parameter in the second search space, and the terminal monitors the PDCCH according to the second monitoring parameter in the second search space.
  • the DRX parameters may include the duration of a DRX cycle, the duration of the activation period in a cycle, the starting position of the activation period in a cycle, the duration of the InactivityTimer, the hybrid automatic retransmission request (hybrid, automatic repeat request, HARQ) The duration of the retransmission timer (timer).
  • first DRX parameter and the second DRX parameter may include one or more parameters, that is, the first DRX parameter and the second DRX parameter may be used to indicate a parameter group.
  • the network device may pre-configure the first search space and the first monitoring parameter to correspond to the first DRX parameter, and the second search space and the second monitoring parameter to correspond to the second DRX parameter. Then, the network device and the terminal may be The configured DRX parameters determine the search space and monitoring parameters used to send and monitor the PDCCH.
  • the network device can send RRC signaling to the terminal.
  • the signaling may include an added search space list (searchSpacesToAddModList) and a deleted search space list (searchSpacesToReleaseList), which are used to indicate the terminal.
  • searchSpacesToAddModList an added search space list
  • searchSpacesToReleaseList a deleted search space list
  • the above parameters may still be used to indicate the first search space of the terminal, and the index corresponding to the first search space may be normal.
  • a new parameter is added: a search space list (searchSpacesForPowerSavingToAddModList) for saving energy, which is used to indicate a second search space, and an index corresponding to the second search space may be powerSaving.
  • the network device may also add a new parameter (usage) to the above message, and the value of the parameter may indicate normal or powerSaving, that is, the parameter is used to indicate whether the terminal uses the first search space to monitor the PDCCH or the second search space to monitor the PDCCH.
  • This parameter can also be defaulted. If this parameter is defaulted, the terminal uses the default value of normal.
  • the network device may also send an indication message containing the above-mentioned parameter (usage) to the terminal through DCI, MAC CE, or RRC signaling.
  • the network device may send an indication message containing the above-mentioned parameter (usage) to the terminal through DCI, MAC, CE, or RRC signaling to indicate the search space after the terminal is switched.
  • network equipment can send RRC signaling to the terminal.
  • the signaling may include the monitoring slot period and offset (monitoringSlotPeriodicityAndOffset), and the start symbol ( monitoringSymbolsWithinSlot), the duration of monitoring in the time slot to be monitored, the aggregation level of the monitored PDCCH, and the number of PDCCH candidate positions (nrofCandidates) to be monitored at the aggregation level.
  • the above parameters may still be used to indicate the first monitoring parameter of the terminal, and the index corresponding to the first monitoring parameter may be normal.
  • the monitoring period is 2 time slots, and the monitoring time slot is time slot 0.
  • Monitoring starts from symbol 0 and symbol 7 in a time slot to be monitored, and the monitoring continues for 3 symbols, that is, the terminal is at symbol 0 and symbol. 1.
  • the aggregation level of the monitored PDCCHs and the number of PDCCH candidate positions (nrofCandidates) to be monitored under the aggregation level can be shown in Table 1.
  • monitoring time slot period and offset of energy saving (monitoringSlotPeriodicityAndOffsetForPowerSaving), which indicates that the monitoring period is 10 timeslots, and is monitored on time slot 0; the starting symbol of monitoring in the energy saving pending time slots )
  • monitoring duration (durationForPowerSaving) in the energy-saving to-be-monitored time slot, which indicates that the symbols 0, 1, and 2 are monitored in one to-be-monitored time slot
  • the aggregation level of the monitored PDCCH and the monitoring level that needs to be monitored at the aggregation level The number of PDCCH candidate positions (nrofCandidates) is shown in Table 2.
  • the second monitoring parameter it is known that in 10 time slots (1 monitoring period) The maximum number of blind terminal inspections is 10. Therefore, when the terminal adopts the second monitoring parameter, the time required to monitor the PDCCH is shorter, which helps to save power consumption of the terminal.
  • the network device can also add a new parameter (usage).
  • the value of this parameter can indicate normal or powerSaving, that is, this parameter is used to indicate whether the terminal uses the first monitoring parameter or the second monitoring parameter.
  • This parameter can also be defaulted. If this parameter is default, the terminal uses the default value of normal.
  • the network device may send an indication message including the above-mentioned parameter (usage) to the terminal through DCI, MAC, CE, or RRC signaling.
  • the terminal can have two working modes: normal working mode (power saving mode) and normal working mode (power saving mode).
  • Each search space corresponds to a working mode.
  • search space 1 and monitoring parameter 1 correspond to the middle-class working mode
  • search space 2 and monitoring parameter 2 correspond to the energy-saving working mode.
  • the search space and monitoring parameter information sent by the network device to the terminal are similar to those in Embodiments 1 and 2, and are not repeated here.
  • the network device may send DCI, MAC, CE, or RRC signaling to the terminal.
  • the signaling includes a working mode parameter (mode), and the value of this parameter may indicate a normal working mode or an energy-saving working mode, and is used to indicate the working mode of the terminal.
  • mode working mode parameter
  • the network device indicates the working mode of the terminal, and is not only used to instruct the terminal to monitor the search space and monitoring parameters of the PDCCH, but also may be used to indicate the working bandwidth of the terminal, the number of activated carriers, and the like.
  • the network device can configure a set of search spaces and monitoring parameters for the terminal to monitor the PDCCH when the terminal is not configured with DRX; it can also configure another set of search spaces and monitoring parameters for the terminal to monitor the PDCCH when the terminal is configured with DRX.
  • the network device may send DCI, MAC, CE, RRC and other signaling to the terminal, and the signaling may include the signaling including parameters for indicating whether to configure DRX for the terminal.
  • the signaling may further carry DRX configuration parameters, such as the period of the DRX and the duration of the activation period.
  • the network device can configure a search space 1 and a monitoring parameter 1 for the terminal for the terminal to monitor the PDCCH when the DRX cycle is less than 50ms; it can also configure a group search space 2 and a monitoring parameter 2 for the terminal for the terminal to have a DRX cycle of 50ms or more Monitor the PDCCH at all times.
  • the search space and monitoring parameter information sent by the network device to the terminal are similar to those in Embodiments 1 and 2, and are not repeated here.
  • the network device may send DCI, MAC, CE, RRC and other signaling to the terminal.
  • the signaling may include a DRX parameter configured for the terminal, and the DRX parameter includes a DRX cycle and the like.
  • the terminal and the network device may determine to use the first set of search spaces and monitoring parameters or the second set of search spaces and monitoring parameters according to the DRX parameter.
  • the network device may configure a search space 1 and a monitoring parameter 1 for the terminal.
  • the monitoring parameter 1 includes a DCI format parameter, indicating that the DCI formats monitored by the terminal are DCI-format0-0-AndFormat1-0, DCI-format2-0, DCI- format2-1, DCI-format2-2, DCI-format2-3; the network device can also configure search space 2 and monitoring parameters 2 for the terminal.
  • the monitoring parameter 2 also includes DCI format parameters, indicating that the DCI format monitored by the terminal is DCI. -format0-0-AndFormat1-0, DCI-format2-0.
  • the above DCI format is only an example.
  • the DCI format instructed by the network device to monitor the terminal may be a DCI format in a 5G system, a DCI format in an LTE system, or other DCI formats in the future.
  • some future DCI formats may also indicate whether the terminal sleeps for a period of time, how long it wakes up from the sleep state, and so on.
  • the search space and monitoring parameter information sent by the network device to the terminal are similar to those in Embodiments 1 and 2, and are not repeated here.
  • search space list names, search space index names, parameter names, and DCI format names added in the above specific embodiments are all examples, and do not limit the embodiments of this application.
  • an embodiment of the present application further provides a terminal, which is used to implement the functions of the terminal in the foregoing method embodiments.
  • the terminal may include a receiving unit 701 and a processing unit 702.
  • the receiving unit 701 is configured to receive first information sent by a network device, where the first information is used to indicate a first search space and a second search space, and a first monitoring parameter and a second monitoring parameter.
  • the monitoring parameter is a monitoring parameter for the terminal to monitor the PDCCH in the first search space
  • the second monitoring parameter is a monitoring parameter for the terminal to monitor the PDCCH in the second search space
  • the first search space Different from the second search space, or the first search space is the same as the second search space, but the first monitoring parameter is different from the second monitoring parameter.
  • the processing unit 702 is configured to monitor the PDCCH according to the first monitoring parameter in the first search space, or monitor the PDCCH according to the second monitoring parameter in the second search space.
  • the receiving unit 701 is further configured to receive second information sent by the network device.
  • the second information instructs the terminal to monitor the PDCCH according to the first monitoring parameter in the first search space; or the second information instructs the terminal to monitor the PDCCH in the second search space according to the first
  • the second monitoring parameter monitors the PDCCH.
  • the second information is sent to the terminal through DCI, MAC, CE, or RRC signaling.
  • the processing unit 702 is specifically configured to: when the terminal is in a first working mode, monitor a PDCCH according to the first monitoring parameter in the first search space; the terminal is in In the second working mode, the PDCCH is monitored in the second search space according to the second monitoring parameter.
  • the receiving unit 701 is further configured to receive third information sent by the network device, where the third information is used to indicate a working mode of the terminal.
  • the third information is sent to the terminal through DCI, MAC, CE, or RRC signaling.
  • the processing unit 702 is specifically configured to: when the terminal is configured with DRX, monitor the PDCCH according to the first monitoring parameter in the first search space; the terminal is not configured with DRX At that time, a PDCCH is monitored in the second search space according to the second monitoring parameter.
  • the processing unit 702 is specifically configured to: when the terminal is configured as the first DRX parameter, monitor the PDCCH according to the first monitoring parameter in the first search space; the terminal is When configured as the second DRX parameter, the PDCCH is monitored in the second search space according to the second monitoring parameter.
  • the monitoring parameter includes one or more of the following parameters: a format of the monitored DCI, a monitoring period, a monitoring time slot, a monitoring time in the time slot to be monitored, and a time slot to be monitored.
  • the monitoring start symbol the aggregation level of the monitored PDCCH, and the number of PDCCH candidate positions to be monitored at the aggregation level.
  • the terminal may further include a sending unit 703, configured to send indication information used to indicate a working mode of the terminal to a network device.
  • the embodiment of the present application further provides a network device, which is used to implement the functions of the network device in the foregoing method embodiment.
  • the network device may include a sending unit 801 and a processing unit 802.
  • the sending unit 801 is configured to send first information to the terminal, where the first information is used to indicate the first search space and the second search space, and the first monitoring parameter and the second monitoring parameter, and the first monitoring parameter Is a monitoring parameter for the terminal to monitor the PDCCH in the first search space, and the second monitoring parameter is a monitoring parameter for the terminal to monitor the PDCCH in the second search space.
  • the second search space is different, or the first search space is the same as the second search space, but the first monitoring parameter is different from the second monitoring parameter;
  • a processing unit 802 is configured to send a PDCCH according to the first monitoring parameter in the first search space through the sending unit 801, or send a PDCCH according to the second monitoring parameter in the second search space.
  • the sending unit 801 is further configured to: the terminal sends second information.
  • the second information instructs the terminal to monitor the PDCCH according to the first monitoring parameter in the first search space; or the second information instructs the terminal to monitor the PDCCH in the second search space according to the first The second monitoring parameter monitors the PDCCH.
  • the second information is sent to the terminal through DCI, MAC, CE, or RRC signaling.
  • the processing unit 802 is specifically configured to: when it is determined that the terminal is in the first working mode, send the PDCCH according to the first monitoring parameter in the first search space through the sending unit 801; determine When the terminal is in the second working mode, the sending unit 801 sends a PDCCH according to the second monitoring parameter in the second search space.
  • the sending unit 801 is further configured to send third information to the terminal, where the third information is used to indicate a working mode of the terminal.
  • the third information is sent to the terminal through DCI, MAC, CE, or RRC signaling.
  • the processing unit 802 is specifically configured to: when it is determined that the terminal is configured to receive DRX discontinuously, send a PDCCH according to the first monitoring parameter in the first search space through the sending unit 801 ; When it is determined that the terminal is not configured with DRX, sending a PDCCH according to the second monitoring parameter in the second search space through the sending unit 801.
  • the processing unit 802 is specifically configured to: when determining that the terminal is configured as the first DRX parameter, send the PDCCH according to the first monitoring parameter in the first search space through the sending unit 801 ; When it is determined that the terminal is configured as the second DRX parameter, sending a PDCCH according to the second monitoring parameter in the second search space through the sending unit 801.
  • the monitoring parameter includes one or more of the following parameters: a format of the monitored DCI, a monitoring period, a monitoring time slot, a monitoring duration in a monitoring period, and a monitoring time slot.
  • the network device may further include a receiving unit 803, configured to receive instruction information sent by a terminal and used to indicate a working mode of the terminal.
  • each of the above units is only a division of logical functions. In actual implementation, it may be fully or partially integrated into a physical entity, or it may be physically separated. And these units can all be implemented in the form of software call through processing elements; they can also be all implemented in hardware; some units can also be implemented in software through process element calls, and some units can be implemented in hardware.
  • the receiving unit and the sending unit can be set independently, or they can form a transmitting and receiving unit.
  • the transceiver unit and the processing unit can be integrated together or can be implemented independently.
  • the processing element described here may be an integrated circuit with signal processing capabilities.
  • each step of the above method or each of the above units may be completed by an integrated logic circuit of hardware in a processor element or an instruction in the form of software.
  • the above sending unit is a unit that controls sending, and can send information through a sending device, such as an antenna and a radio frequency device.
  • the receiving unit can also receive information through a receiving device, such as an antenna and a radio frequency device.
  • the above units may be one or more integrated circuits configured to implement the above method, for example: one or more application specific integrated circuits (ASIC), or one or more microprocessors, or, an Or multiple field programmable gate arrays (FPGA).
  • ASIC application specific integrated circuits
  • FPGA field programmable gate arrays
  • the processing element may be a general-purpose processor, such as a central processing unit (CPU) or another processor that can call a program.
  • CPU central processing unit
  • SOC system-on-a-chip
  • an embodiment of the present application further provides a terminal, which is used to implement the functions of the terminal in the foregoing method embodiments.
  • the terminal 900 may include a processor 901, a memory 902, and a communication interface 903. Further, a communication bus 904 may also be included.
  • the processor 901 may be a general-purpose CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the solution of the present application.
  • the communication bus 904 may include a path for transferring information between the aforementioned components.
  • the communication interface 903 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the memory 902 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM-ready-only memory (EEPROM)), compact disc (read-only memory (CD-ROM) or other compact disc storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this.
  • the memory 902 may exist independently, and is connected to the processor 901 through a bus.
  • the memory 902 may also be integrated with the processor 901.
  • the memory 902 is configured to store application program code for executing the solution of the present application, and the processor 901 controls execution.
  • the processor 901 is configured to execute application program code stored in the memory 902, thereby implementing the communication method provided in the foregoing embodiment of the present application.
  • the processor 901 may perform related functions in the communication method provided in the foregoing embodiments of the present application, and the communication interface 903 is responsible for communicating with other devices or communication networks. This is not specifically limited.
  • the processor 901 may include one or more CPUs.
  • the terminal may include multiple processors.
  • processors may be a single-CPU processor or a multi-CPU processor.
  • a processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).
  • the processor 901 may call a program stored in the memory 902 to perform the following steps:
  • the first information sent by the network device is received through the communication interface 903, the first information is used to indicate the first search space and the second search space, and the first monitoring parameter and the second monitoring parameter, and the first monitoring parameter is The terminal monitors a monitoring parameter of the physical downlink control channel PDCCH in the first search space, the second monitoring parameter is a monitoring parameter of the terminal monitoring the PDCCH in the second search space, and the first search space Different from the second search space, or the first search space is the same as the second search space, but the first monitoring parameter is different from the second monitoring parameter.
  • the PDCCH is monitored according to the first monitoring parameter in the first search space, or the terminal monitors the PDCCH according to the second monitoring parameter in the second search space.
  • the processor 901 is further configured to: receive, through the communication interface 903, second information sent by the network device; the second information instructs the terminal in the first search space to The first monitoring parameter monitors the PDCCH; or the second information instructs the terminal to monitor the PDCCH according to the second monitoring parameter in the second search space.
  • the second information is sent to the terminal through downlink control information DCI, a medium access control layer control element MAC CE, or radio resource control RRC signaling.
  • the processor 901 is specifically configured to: when the terminal is in the first working mode, monitor the PDCCH according to the first monitoring parameter in the first search space through the communication interface 903; When the terminal is in the second working mode, the PDCCH is monitored in the second search space through the communication interface 903 according to the second monitoring parameter.
  • the processor 901 is further configured to receive third information sent by the network device through the communication interface 903, where the third information is used to indicate a working mode of the terminal.
  • the third information is sent to the terminal through DCI, MAC, CE, or RRC signaling.
  • the processor 901 is specifically configured to: when the terminal is configured to discontinuously receive DRX, monitor through the communication interface 903 in the first search space according to the first monitoring parameter PDCCH; when the terminal is not configured with DRX, monitor the PDCCH according to the second monitoring parameter in the second search space through the communication interface 903.
  • the processor 901 is specifically configured to: when the terminal is configured as the first DRX parameter, monitor through the communication interface 903 in the first search space according to the first monitoring parameter PDCCH; when the terminal is configured as the second DRX parameter, monitor the PDCCH according to the second monitoring parameter in the second search space through the communication interface 903.
  • the monitoring parameter includes one or more of the following parameters: a format of the monitored DCI; a monitoring period; a monitoring time slot; a monitoring time in the time slot to be monitored; a time slot to be monitored The starting symbols to be monitored; the aggregation level of the monitored PDCCH and the number of PDCCH candidate positions that need to be monitored at the aggregation level.
  • the embodiment of the present application further provides a network device, which is used to implement the functions of the terminal in the foregoing method embodiments.
  • the terminal 1000 may include a processor 1001, a memory 1002, and a communication interface 1003. Further, a communication bus 1004 may also be included.
  • the processor 1001 may be a general-purpose CPU, a microprocessor, an ASIC, or one or more integrated circuits for controlling the execution of the program of the solution of the present application.
  • the communication bus 1004 may include a path for transmitting information between the aforementioned components.
  • the communication interface 1003 uses any device such as a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • a transceiver to communicate with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
  • RAN radio access network
  • WLAN wireless local area networks
  • the memory 1002 may be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (RAM) or other type that can store information and instructions
  • the dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM-ready-only memory (EEPROM)), compact disc (read-only memory (CD-ROM)) or other optical disk storage, optical disk storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this.
  • the memory 1002 may exist independently, and is connected to the processor 1001 through a bus.
  • the memory 1002 may also be integrated with the processor 1001.
  • the memory 1002 is configured to store application program code for executing the solution of the present application, and the processor 1001 controls execution.
  • the processor 1001 is configured to execute application program code stored in the memory 1002, thereby implementing the communication method provided in the foregoing embodiment of the present application.
  • the processor 1001 may perform related functions in the communication method provided by the foregoing embodiments of the present application, and the communication interface 1003 is responsible for communicating with other devices or communication networks. This is not specifically limited.
  • the processor 1001 may include one or more CPUs.
  • the network device may include multiple processors.
  • Each of these processors may be a single-CPU processor or a multi-CPU processor.
  • a processor herein may refer to one or more devices, circuits, and / or processing cores for processing data (such as computer program instructions).
  • the processor 1001 may call a program stored in the memory 1002 to perform the following steps:
  • the first information is used to indicate the first search space and the second search space, and the first monitoring parameter and the second monitoring parameter, and the first monitoring parameter is the terminal Monitoring a monitoring parameter of a physical downlink control channel PDCCH in the first search space
  • the second monitoring parameter is a monitoring parameter of the terminal monitoring the PDCCH in the second search space
  • the first search space and all The second search space is different, or the first search space is the same as the second search space, but the first monitoring parameter is different from the second monitoring parameter.
  • the processor 1001 is further configured to send the second information to the terminal through the communication interface 1003.
  • the second information instructs the terminal to monitor the PDCCH according to the first monitoring parameter in the first search space; or the second information instructs the terminal to monitor the PDCCH in the second search space according to the first
  • the second monitoring parameter monitors the PDCCH.
  • the second information is sent to the terminal through downlink control information DCI, a medium access control layer control element MAC CE, or radio resource control RRC signaling.
  • the processor 1001 is specifically configured to: when it is determined that the terminal is in the first working mode, send a PDCCH according to the first monitoring parameter in the first search space through the communication interface 1003; determine When the terminal is in the second working mode, a PDCCH is sent according to the second monitoring parameter in the second search space through the communication interface 1003.
  • the processor 1001 is further configured to send third information to the terminal through the communication interface 1003, where the third information is used to indicate a working mode of the terminal.
  • the third information is sent to the terminal through DCI, MAC, CE, or RRC signaling.
  • the processor 1001 is specifically configured to: when it is determined that the terminal is configured to receive DRX discontinuously, send a PDCCH according to the first monitoring parameter in the first search space through the communication interface 1003 ; When it is determined that the terminal is not configured with DRX, send a PDCCH according to the second monitoring parameter in the second search space through the communication interface 1003.
  • the processor 1001 is specifically configured to: when determining that the terminal is configured as the first DRX parameter, send a PDCCH according to the first monitoring parameter in the first search space through the communication interface 1003 When it is determined that the terminal is configured as the second DRX parameter, the PDCCH is sent according to the second monitoring parameter in the second search space through the communication interface 1003.
  • the monitoring parameter includes one or more of the following parameters: the format of the DCI to be monitored; the monitoring period; the monitoring time slot; the duration of the monitoring in the monitoring period; the monitoring time slot Monitoring start symbol; the aggregation level of the monitored PDCCH and the number of PDCCH candidate positions that need to be monitored at the aggregation level.
  • an embodiment of the present application further provides a communication system including the foregoing terminal and network equipment.
  • An embodiment of the present application provides a computer-readable storage medium.
  • the computer-readable storage medium stores computer instructions, and when the instructions are run on a computer, the computer is caused to perform functions as performed by the terminal in the foregoing method embodiments.
  • An embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores computer instructions, and when the instructions are run on a computer, the computer is caused to execute a function performed by a network device in the foregoing method embodiment. .
  • the embodiment of the present application provides a computer program product containing instructions, which when executed on a computer, causes the computer to execute functions as performed by the terminal in the foregoing method embodiments.
  • the embodiment of the present application provides a computer program product containing instructions, which when executed on a computer, causes the computer to execute a function performed by a network device in the foregoing method embodiment.
  • This application provides a chip, which is connected to a memory, and is used to read and execute a software program stored in the memory, so as to implement the functions performed by the terminal in the foregoing method embodiments.
  • This application provides a chip, which is connected to a memory, and is configured to read and execute a software program stored in the memory, so as to implement functions performed by the network device in the foregoing method embodiment.

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Abstract

本申请公开了一种通信方法及装置。该方法中，网络设备向终端发送第一信息，用于指示第一搜索空间、第二搜索空间、第一监测参数和第二监测参数，第一监测参数为在第一搜索空间内监测PDCCH的监测参数，第二监测参数为在第二搜索空间内监测PDCCH的监测参数，第一搜索空间与第二搜索空间不同，或者，第一搜索空间与第二搜索空间相同，但第一监测参数与第二监测参数不同。网络设备在发送第一信息后，在第一搜索空间内根据第一监测参数发送PDCCH，终端在第一搜索空间内根据第一监测参数监测PDCCH；或者，网络设备在发送第一信息后，在第二搜索空间内根据第二监测参数发送PDCCH，终端在第二搜索空间内根据第二监测参数监测PDCCH。

Description

一种通信方法及设备 技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及设备。
背景技术
基站通过物理下行控制信道(physical downlink control channel，PDCCH)向终端发送下行控制信息(downlink control information，DCI)，以指示终端接收下行数据的时频资源、调制与编码策略(modulation and coding scheme，MCS)、冗余版本(redundancy version，RV)等配置参数。
终端接收DCI时，在下行控制区域中多个PDCCH候选位置进行盲检(blind detect，BD)，一组PDCCH候选位置组成一个搜索空间(search space)，基站可以为终端配置一个或多个搜索空间，终端在配置的一个或多个搜索空间中监测，监测是否有发送给该终端的DCI。基站还会为终端配置在每个搜索空间中监测PDCCH的参数，例如监测周期，监测时隙、PDCCH的聚合等级、盲检最大次数等等。
现有技术中，基站可以通过无线资源控制(radio resource control，RRC)信令，将为终端配置的一个或多个搜索空间以及每个搜索空间对应的监测参数发送给终端；终端则根据接收到的监测参数，在相应的搜索空间中监测PDCCH。然而，基站在为终端配置搜索空间以及监测参数时，仅确定终端当前需要使用的搜索空间以及监测参数，配置不够灵活。
发明内容
本申请提供一种通信方法及设备，用于实现将一组或多组搜索空间，以及多组PDCCH监测参数发送给终端，以使终端根据其中一组监测参数在一组搜索空间上监测PDCCH。
第一方面，本申请提供了一种通信方法，包括：网络设备向终端发送第一信息，所述第一信息用于指示第一搜索空间和第二搜索空间，以及第一监测参数和第二监测参数，所述第一监测参数为所述终端在所述第一搜索空间内监测PDCCH的监测参数，所述第二监测参数为所述终端在所述第二搜索空间内监测PDCCH的监测参数，所述第一搜索空间与所述第二搜索空间不同，或者，所述第一搜索空间与所述第二搜索空间相同，但所述第一监测参数与所述第二监测参数不同。
网络设备在发送第一信息后，在所述第一搜索空间内根据所述第一监测参数发送PDCCH；终端在接收到第一信息后，在所述第一搜索内根据所述第一监测参数监测PDCCH。或者，网络设备在发送第一信息后，在所述第二搜索空间内根据所述第二监测参数发送PDCCH；终端在接收到第一信息后，在所述第二搜索内根据所述第二监测参数监测PDCCH。
在传统的PDCCH监测过程中，网络设备向终端发送搜索空间以及相应的监测参数，终端则在网络设备指示的所有搜索空间内监测；若需要变换搜索空间或监测参数，则网络设备需要将变更后的搜索空间以及所有监测参数重新发送给终端。而在上述方法中，网络设备发送的第一信息中，可以携带多组搜索空间、多组监测参数，而终端在其中一组搜索空间中根据一组监测参数监测PDCCH，而非在所有搜索空间内监测PDCCH；若需要变换搜索空间或监测参数时，网络设备可以不必再重新发送搜索空间以及全部监测参数，仅指示终端切换搜索空间或监测参数即可。
结合第一方面，在第一方面的第一种可能的实现方式中，网络设备向终端发送第二信息，用于指示终端在第一搜索空间内根据第一监测参数监测PDCCH，或者，用于指示终端在第二搜索空间内根据第二监测参数监测PDCCH。
在上述方法中，网络设备可以向终端发送第二信息，直接指示终端在哪个搜索空间中采用哪些监测参数监测PDCCH。例如，网络设备可以预先配置第一搜索空间以及第一监测参数对应索引1，第二搜索 空间以及第二监测参数对应索引2，若第二指示信息中包含索引1，则指示终端在第一搜索空间中根据第一监测参数监测PDCCH。
结合第一方面，在第一方面的第二种可能的实现方式中，网络设备可以通过DCI、介质访问控制层控制元素(media access control control element，MAC CE)、RRC信令将第二信息发送给终端。
结合第一方面，在第一方面的第三种可能的实现方式中，当终端处于第一工作模式时，网络设备在第一搜索空间根据第一监测参数发送PDCCH，终端在第一搜索空间内根据第一监测参数监测PDCCH；当终端处于第二工作模式时，网络设备在第二搜索空间根据第二监测参数发送PDCCH，终端在第二搜索空间根据第二监测参数监测PDCCH。在上述方式中，网络设备发送PDCCH、终端监测PDCCH时，选择的搜索空间以及监测参数是根据终端的工作模式确定的。
结合第一方面，在第一方面的第四种可能的实现方式中，网络设备还可以向终端发送第三信息，用于指示终端的工作模式；或者，终端的工作模式也可以无需网络设备指示，而是预先在终端和网络设备中配置工作模式切换策略，终端和网络设备能够根据工作模式切换策略，判断终端当前应处于的工作模式。
结合第一方面，在第一方面的第五种可能的实现方式中，网络设备可以通过DCI、MAC CE或RRC信息将上述第三信息方式给终端。
结合第一方面，在第一方面的第六种可能的实现方式中，当终端被配置了非连续接收(discontinuous reception，DRX)时，网络设备在第一搜索空间内根据第一监测参数发送PDCCH，终端在第一搜索空间内根据第一监测参数监测PDCCH；当终端没有被配置DRX时，网络设备在第二搜索空间内根据第二监测参数发送PDCCH，终端在第二搜索空间内根据第二监测参数监测PDCCH。
结合第一方面，在第一方面的第七种可能的实现方式中，当终端被配置了第一DRX参数时，网络设备在第一搜索空间内根据第一监测参数发送PDCCH，终端在第一搜索空间内根据第一监测参数监测PDCCH；当终端被配置了第二DRX参数时，网络设备在第二搜索空间内根据第二监测参数发送PDCCH，终端在第二搜索空间内根据第二监测参数监测PDCCH。
结合第一方面，在第一方面的第八种可能的实现方式中，上述监测参数(既可以是第一监测参数，也可以是第二监测参数)包括以下参数中的一种或多种：监测的DCI的格式；监测周期；监测时隙；监测周期中监测的时长；在待监测时隙中监测的起始符号；监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量。
第二方面，本申请实施例提供了一种终端，该终端可以包括接收单元和处理单元，用于实现如第一方面中任一项所述方法中终端所执行的功能。
第三方面，本申请实施例提供了一种网络设备，该网络设备可以包括发送单元和处理单元，用于实现如第一方面中任一项所述方法中网络设备所执行的功能。
第四方面，本申请实施例提供了一种终端设备，该终端可以包括处理器、存储器和通信接口，所述存储器用于存储程序，所述处理器调用存储器存储的程序，通过通信接口执行如第一方面中任一项所述方法中终端所执行的功能。
第五方面，本申请实施例提供了一种网络设备，该网络设备可以包括处理器、存储器和通信接口，所述存储器用于存储程序，所述处理器调用存储器存储的程序，通过通信接口执行如第一方面中任一项所述方法中网络设备所执行的功能。
第六方面，本申请实施例提供了一种通信系统，包括如第二方面所述的终端和第三方面所述的网络设备；或者，该通信系统也可以包括如第四方面所述的终端和第五方面所述的网络设备。
第七方面，本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机指 令，当所述指令在计算机上运行时，使得计算机执行如第一方面中任一项所述方法中终端所执行的功能，或者使得计算机执行如第一方面中任一项所述方法中网络设备所执行的功能。
第八方面，本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如第一方面中任一项所述方法中终端所执行的功能，或者使得计算机执行如第一方面中任一项所述方法中网络设备所执行的功能。
第九方面，本申请提供一种芯片，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现上述第一方面中任一项方法中终端所执行的功能，或者实现如第一方面中任一项所述方法中网络设备所执行的功能。
附图说明
图1为本申请实施例提供的应用场景示意图；
图2为本申请实施例提供的通信方法的流程示意图之一；
图3为本申请实施例提供的通信方法的流程示意图之二；
图4为本申请实施例提供的通信方法的流程示意图之三；
图5为本申请实施例提供的DRX示意图；
图6为本申请实施例提供的通信方法的流程示意图之四；
图7为本申请实施例提供的终端的结构示意图之一；
图8为本申请实施例提供的网络设备的结构示意图之一；
图9为本申请实施例提供的终端的结构示意图之二；
图10为本申请实施例提供的网络设备的结构示意图之二。
具体实施方式
为了使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请作进一步地详细描述。
基站可以RRC信令，将为终端配置的一个或多个搜索空间以及每个搜索空间对应的监测参数发送给终端；终端则根据接收到的监测参数，在相应的搜索空间中监测PDCCH。然而，基站在为终端配置搜索空间以及监测参数时，仅确定终端当前需要使用的搜索空间以及监测参数，配置不够灵活。
为了实现更加灵活的配置，本申请实施例提出了一种通信方法及装置。该方法及装置可以应用于第5代移动通信(the 5th generation，5G)系统、长期演进(long term evolution，LTE)系统或其他通信系统中。本申请实施例可以应用于图1所示的场景中。
本申请实施例中的网络设备可以基站，或其他用于将收到的空中帧与网际协议(internet protocol，IP)分组进行相互转换，作为无线终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。网络设备还可用于协调对空中接口的属性管理。其中，在采用不同无线接入技术的通信系统中，具备基站功能的设备的名称可能会有所不同，例如，全球移动通信系统(global system for mobile communication，GSM)或码分多址(code division multiple access，CDMA)系统中的基站称之为基站(base transceiver station，BTS)、宽带码分多址(wideband code division multiple access，WCDMA)中的基站称之为节点B(node B)、LTE系统中的基站称之为演进型基站(evolutional node B，eNB)、NR系统中的基站称之为通用型基站(general node B，gNB)等。本申请实施例对此不进行不限定。
本申请实施例中的终端设备可以指用户设备(user equipment，UE)、接入终端设备、用户单元、用户站、移动站、移动台、远方站、远程终端设备、移动设备、用户终端设备、终端设备、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、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、个人数字处理(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，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(public land mobile network，PLMN)中的终端设备等，本申请实施例对此并不限定。
参见图2，为本申请实施例提供的通信方法的流程示意图，如图所示，该方法可以包括以下步骤：
步骤201、网络设备向终端发送第一信息。该第一信息用于指示第一搜索空间和第二搜索空间，以及第一监测参数和第二监测参数，第一监测参数为该终端在第一搜索空间内监测PDCCH的监测参数，第二监测参数为该终端在第二搜索空间内监测PDCCH的监测参数。
其中，第一搜索空间与第二搜索空间可以是相同的搜索空间，但第一监测参数和第二监测参数不同，即，终端可以在不同时段、不同工作模式、不同场景下，在相同的搜索空间中根据不同的监测参数监测PDCCH。或者，第一搜索空间与第二搜索空间可以为不同的搜索空间，但第一监测参数可以与第二监测参数相同，即，终端可以在不同时段、不同工作模式、不同场景下，在不同的搜索空间中根据相同的监测参数监测PDCCH。或者，第一搜索空间与第二搜索空间不同，且第一监测参数与第二监测参数也不相同，即，终端在不同时段，不同工作模式、不同场景下，在不同的搜索空间中根据各搜索空间的监测参数监测PDCCH。
步骤202、网络设备在第一搜索空间内根据第一监测参数发送PDCCH，终端在第一搜索空间内根据第一监测参数监测PDCCH；或者，网络设备在第二搜索空间内根据第二监测参数发送PDCCH，终端在第二搜索空间内根据第二监测参数监测PDCCH。
在传统的PDCCH监测过程中，网络设备向终端发送搜索空间以及相应的监测参数，终端则在网络设备指示的所有搜索空间内监测；若需要变换搜索空间或监测参数，则网络设备需要将变更后的搜索空间以及所有监测参数重新发送给终端。而在上述方法中，网络设备发送的第一信息中，可以携带多组搜索空间、多组监测参数，而终端在其中一组搜索空间中根据相应的监测参数监测PDCCH，而非在所有搜索空间内监测PDCCH；若需要变换搜索空间或监测参数时，网络设备可以不必再重新发送搜索空间以及全部监测参数，仅指示终端切换搜索空间或监测参数即可。
应当理解，上述实施例中描述的第一消息包括第一搜索空间、第二搜索空间、第一监测参数和第二监测参数，但并不表示第一消息中仅包括这些信息，第一消息中还可以包括第三搜索空间、第三监测参数等等。
若第一消息中还包括第三搜索空间和第三监测参数，网络设备可以进一步指示第三搜索空间和第三监测参数，与第一搜索空间和第一监测参数同属于第一监测组，即，终端可以在同一时段内既在第一搜索空间根据第一监测参数监测PDCCH，也在第三搜索空间根据第三监测参数监测PDCCH；或者，网络设备可以指示第三搜索空间和第三监测参数，与第二搜索空间和第二监测参数同属于第二监测组，即，终端可以在同一时段内既在第二搜索空间根据第二监测参数监测PDCCH，也在第三搜索空间根据第三监测参数监测PDCCH；或者，网络设备还可以指示第三搜索空间和第三监测参数属于第三监测组，即，终端在第三搜索空间根据第三监测参数监测PDCCH时，不根据第一监测参数在第一搜索空间监测PDCCH，也不根据第二监测参数在第二搜索空间监测PDCCH。
可选的，上述监测参数可以包括以下参数中的一种或任意组合：
监测的DCI格式(DCI format)：网络设备通过PDCCH传输的DCI有多种格式，根据不同的目的和场景采用不同的格式。例如，用于调度物理上行共享信道(physical uplink shared channel，PUSCH)和用于调度物理下行共享信道(physical downlink shared channel，PDSCH)的DCI的格式可能不同。网络设备可以指示终端在相应的搜索空间中监测一种或多种格式的DCI，例如，网络设备可以指示终端在第 一搜索空间中监测的DCI格式为DCI-format0-0-AndFormat1-0、DCI-format2-0、DCI-format2-1、DCI-format2-2、DCI-format2-3，网络设备指示终端在第二搜索空间中监测的DCI格式为DCI-format0-0-AndFormat1-0、DCI-format2-0。
监测周期：网络设备可以为终端配置监测周期，指示终端根据监测周期在搜索空间中监测PDCCH。监测周期可以以时隙为单元，例如，若网络设备指示监测周期为8，则表示监测周期为8个时隙。当然，监测周期的单元也不限于时隙，还可以是毫秒(ms)、子帧等。
监测时隙：用于表示终端监测PDCCH的时隙。一般来说，终端在一个监测周期中监测1个时隙，例如，若网络设备可以指示监测周期为10个时隙，监测时隙为时隙0。当然，终端也可以在一个监测周期中监测多个时隙，若监测的多个时隙为连续时隙，那么该监测时隙参数，可以进一步包括监测起始时隙以及监测时长，分别表示终端在一个监测周期中从哪个时隙开始监测并持续监测几个时隙；或者，网络设备也可以通过比特位图表示在一个监测周期在监测哪几个时隙，即，每个比特位对应监测周期中的1个时隙，该比特位的值表示是否监测该时隙，用于指示终端在一个监测周期中监测一个时隙、多个连续时隙或多个非连续时隙。当然，网络设备指示的时间单位也可以是毫秒(ms)、子帧等，那么网络设备也可以发送监测时间(ms)、监测子帧等参数。
通常情况下，监测周期与监测时隙这两个参数一同发送给终端配合使用，通过“监测时隙周期和偏移(monitoringSlotPeriodicityAndOffset)”参数发送给终端。
待监测时隙中监测的时长(duration)：用于表示终端在需要监测的一个时隙中监测的时长，其单位可以为符号。
待监测时隙中监测的起始符号(monitoringSymbolsWithinSlot)：用于表示终端在需要监测的时隙中监测PDCCH的起始符号。例如，一个时隙中包括14个符号，分别对应14比特，若14个比特的值为10000001000000，则表示终端在一个待监测时隙中的符号0和符号7开始监测PDCCH。进一步地，若duration的值为3，即一次监测持续3个符号，那么终端则在符号0、符号1、符号2以及符号7、符号8、符号9上监测PDCCH。
监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量(nrofCandidates)：
聚合等级(aggregationLevelx)表示一个PDCCH所包含的控制信道元素(control channel element，CCE)的数量，若一个PDCCH由1个CCE构成，则其聚合等级为1，若一个PDCCH由2个CCE构成，则其聚合等级为2，以此类推。常用的聚合等级有1、2、4、8、16。
监测PDCCH候选位置的数量，表示在搜索空间中终端监测PDCCH候选位置的最大数量。例如，若一个搜索空间包括8个CCE，那么对于聚合等级为1的PDCCH来说，则有8个PDCCH候选位置，若网络设备指示的监测PDCCH候选位置的数量为6，则表示终端根据预设规则从8个PDCCH候选位置中选择6个进行监测。
搜索空间类型(searchSpaceType)：表示网络设备指示的搜索空间为公共搜索空间(common)还是用户设备专用搜索空间(UE-specific)。
在一种可能的实现方式中，在上述步骤202之前，网络设备还可以向终端发送第二信息，用于指示终端在第一搜索空间中根据第一监测参数监测PDCCH；或者，用于指示终端在第二搜索空间中根据第二监测参数监测PDCCH。在该方式中，由网络设备确定并直接指示终端在哪个搜索空间中采用哪些监测参数监测PDCCH。
例如，网络设备可以预先配置第一搜索空间以及第一监测参数对应索引1，第二搜索空间以及第二监测参数对应索引2，第三搜索空间以及第三监测参数对应索引3。若网络设备确定终端应在第一搜索 空间中根据第一监测参数监测PDCCH、确定该网络设备在第一搜索空间中根据第一监测参数发送PDCCH，那么网络设备发送的第二消息中可以包括索引1的指示信息。若网络设备确定终端应用在第二搜索空间中根据第二监测参数监测PDCCH，并在第三搜索空间中根据第三监测参数监测PDCCH，那么网络设备发送的第二消息中可以包括索引2和索引3的指示信息。
又例如，网络设备可以预先配置第一搜索空间以及第一监测参数、第三搜索空间以及第三监测参数对应监测组1，第二搜索空间以及第二监测参数对应监测组2。若网络设备确定该网络设备根据监测组1中监测参数发送PDCCH、终端应根据监测组1中的监测参数监测PDCCH，那么网络设备发送的第二信息中可以包括监测组1的指示信息。
可选地，网络设备可以将第一消息和第二消息携带在同一信令中发送给终端。一般来说，第一消息通常通过RRC信令发送给终端，那么网络设备可以将第一消息和第二消息一同携带在RRC信令中发给终端。当然，网络设备也可以通过其它信令将第一消息和第二消息发送给终端，本申请实施例对此不做限制。
此外，网络设备也可以通过不同的信令将第一消息和第二消息发送给终端。那么网络设备在发送第二消息时，可以通过DCI、MAC CE或RRC信令将第二消息发送给终端。其中，由于DCI信令属于物理层信令，MAC CE信令属于MAC层信令，RRC信令属于RRC层信令，而终端解析信令时依次经过物理层解析、MAC层解析、RRC层解析。因此，若通过DCI信令发送第二消息，则时延较短；若通过RRC信令发送第二消息，则时延较长；若通过MAC CE信令发送第二消息，则时延在通过DCI信令发送与通过RRC信令发送之间。
进一步地，在上述步骤202之后，网络设备还可以在确定需要变换终端监测PDCCH的搜索空间以及监测参数时，向终端发送指示消息，以指示终端变换后的搜索空间以及监测参数。该指示消息与第二消息类似，可以包括变换后的搜索空间以及监测参数的索引信息，或者包括变换后的监测组的索引信息。该指示消息也可以通过DCI、MAC CE、RRC信令发送给终端。
在传统的PDCCH监测过程中，若网络设备确定需要变换终端的搜索空间以及监测参数，则通过RRC重配过程，将变换后的搜索空间以及相应的监测参数发送给终端，信令开销较大。而在上述实现方式中，网络设备已经在第一消息中将多种可能的搜索空间以及相应的监测参数发送给终端，上述指示消息中可以仅包括变换后的搜索空间以及监测参数对应的索引信息，减少了信令开销。此外，若通过DCI、MAC CE信息发送上述指示信息，还有助于降低时延。
在一种可能的实现方式中，上述步骤202可以包括如图3所示的两种情况。具体地：
步骤202a、若终端处于第一工作模式，则网络设备在第一搜索空间内根据第一监测参数发送PDCCH，终端在第一搜索空间内根据第一监测参数监测PDCCH。
步骤202b、若终端处于第二工作模式，则网络设备在第二搜索空间内根据第二监测参数发送PDCCH，终端在第二搜索空间内根据第二监测参数监测PDCCH。
在上述实现方式中，网络设备可以预先配置第一搜索空间与第一监测参数对应第一工作模式、第二搜索空间与第二监测参数对应第二工作模式，那么网络设备和终端可以根据终端当前的工作模式，确定发送、监测PDCCH所使用的搜索空间以及监测参数。
应当理解，与第一工作模式对应的工作参数包括第一搜索空间以及第一监测参数，但不限于此。例如，第一工作模式还可以与终端的工作带宽大小、激活的载波个数、进行多天线多数输入多输出(multiple-input multiple-output，MIMO)通信时的收发天线数量等参数有关。在一个具体示例中，网络设备为终端配置在第一工作模式下工作时：工作带宽为20MHz，激活3个载波，在搜索空间1内根据监测参数1监测PDCCH等等；为终端配置在第二工作模式下工作时：工作带宽为10MHz，激活1个载波， 在搜索空间1内根据监测参数1监测PDCCH等等。那么，终端在确定工作由第一工作模式切换至第二工作模式时，终端则在搜索空间2中根据监测参数2监测PDCCH，工作带宽从20MHz切换至10MHz，从激活3个载波切换至激活1个载波。当然，网络设备配置的各种参数，可以通过同一信令或多条信令发送给终端。
在一些实施例中，网络设备可以向终端发送第三消息，用于指示终端的工作模式。具体的，网络设备中可以预先配置有终端工作模式切换策略，网络设备可以根据该工作模式切换策略，以及当前的网络环境、终端的状态、终端的需求等因素，确定终端当前的工作模式，并向终端发送用于指示终端工作模式的第三信息。若第三信息指示终端工作在第一工作模式，那么终端则在第一搜索空间中根据第一监测参数监测PDCCH，相应的，网络设备在发送第三信息后，在第一搜索空间中根据第一监测参数发送PDCCH；若第三信息指示终端工作在第二工作模式，那么终端则在第二搜索空间中根据第二监测参数监测PDCCH，相应的，网络设备在发送第三信息后，在第二搜索空间中根据第二监测参数发送PDCCH。
可选地，网络设备可以通过DCI、MAC CE或RRC信令等将第三消息发送给终端。
在另外一些实施例中，可以在网络设备和终端中均预先配置有终端工作模式切换策略，网络设备和终端都可以根据工作模式切换策略，以及当前的网络环境、终端的状态、终端的需求等因素，确定终端当前的工作模式。例如，若网络设备在预设时间段内没有向终端发送DCI，则终端和网络设备根据预设的工作模式切换策略，可以确定切换终端的工作模式，以减少终端监测PDCCH的次数，此时，网络设备可以不必向终端发送用于指示工作模式的消息。
还有一些实施例，终端中可以预先配置有工作模式切换策略，终端根据该工作模式切换策略，以及当前的网络环境、终端的状态、终端的需求等因素，确定当前的工作模式，在确定切换工作模式后，终端可以向网络设备发送第四消息，用于将切换后的工作模式通知给网络设备，以使终端和网络设备在相同的搜索空间中根据相同的监测参数发送、监测PDCCH。其中，第四消息可以通过上行控制信息(uplink control information，UCI)、MAC CE RRC信令发送给网络设备。例如，终端的电量降到预设阈值时，则终端可以切换至省电模式，省电模式对应搜索空间1以及监测参数1，该模式下终端监测PDCCH的最大次数比其他工作模式下的最大监测次数要少。那么终端在搜索空间1中根据监测参数1监测PDCCH；终端向网络设备发送第四消息，该第四消息用于指示终端切换至省电模式，则网络设备在搜索空间1中根据监测参数发送PDCCH。
可选地，网络设备在接收到终端发送的用于指示切换工作模式的指示消息后，可以向终端发送响应消息，以表示网络设备是否成功切换工作模式，确保终端和网络设备在相同的工作模式下工作，避免终端和网络设备工作模式不同导致的消息发送、接收错误。具体地，网络设备发送的响应消息，可以用于指示是否切换成功，例如，用“1”表示已成功切换，用“0”表示切换失败；或者，网络设备也可以在该响应消息中，携带网络设备当前确定出的工作模式的信息，例如，若网络设备从工作模式1切换至工作模式2，那么该响应消息中携带工作模式2的信息，若未切换成功，该响应消息中携带工作模式1的消息，此时，该响应消息与前述实施例中的第三消息类似，用于指示终端根据该消息中携带的工作模式的信息，在相应工作模式下工作。
在另外一种可能的实现方式中，上述步骤202也可以包括如图4所示的两种情况。具体地：
步骤202c、若终端被配置了DRX，则网络设备在第一搜索空间内根据第一监测参数发送PDCCH，终端在第一搜索空间内根据第一监测参数监测PDCCH。
步骤202d、若终端没有被配置DRX，则网络设备在第二搜索空间内根据第二监测参数发送PDCCH，终端在第二搜索空间内根据第二监测参数监测PDCCH。
在上述实现方式中，网络设备可以预先配置第一搜索空间与第一监测参数对应终端被配置了DRX 的情况、第二搜索空间与第二监测参数对应终端未被配置DRX的情况，那么网络设备和终端可以根据终端当前是否被配置了DRX的情况，确定发送、监测PDCCH所使用的搜索空间以及监测参数。
具体地，处于RRC连接态(RRC_connected)的终端，可以被配置DRX，即，终端并不连续监测PDCCH，而是在激活期(on duration)中监测PDCCH，在休眠期(opportunity for DRX)中不监测PDCCH，从而减少终端的功耗，如图5所示。一个激活期与一个休眠期构成一个DRX周期。
例如，若终端未被配置DRX，终端可以按照前述实施例中的监测周期监测PDCCH，由于监测时间较长，可以采用在一个监测周期中监测PDCCH次数较少的监测参数监测PDCCH；若终端被配置了DRX，可以采用在一个监测周期中监测PDCCH次数较多的监测参数监测PDCCH。
应当理解，若终端被配置了DRX，则前述实施例中的在一个监测周期中的某些时隙上监测PDCCH，是指在激活期中进一步设置监测周期，即，终端在激活期中的部分时隙上监测PDCCH，在激活期的其他时隙上不监测PDCCH。
此外，若终端被配置了DRX，但配置的DRX参数也可能根据不同场景下的不同需求有所改变。那么，上述步骤202也可以包括如图6所示的两种情况。具体地：
步骤202e、若终端被配置了第一DRX参数，则网络设备在第一搜索空间内根据第一监测参数发送PDCCH，终端在第一搜索空间内根据第一监测参数监测PDCCH。
步骤202f、若终端被配置了第二DRX参数，则网络设备在第二搜索空间内根据第二监测参数发送PDCCH，终端在第二搜索空间内根据第二监测参数监测PDCCH。
其中，DRX参数可以包括一个DRX周期的时长，一个周期中激活期的时长，一个周期中激活期的起始位置，休眠定时器(InactivityTimer)的时长，混合自动重传请求(hybrid automatic repeat request，HARQ)重传定时器(timer)的时长等。
应当理解，上述第一DRX参数、第二DRX参数可以分别包括一个或多个参数，即，第一DRX参数、第二DRX参数可以用于表示参数组。
在上述实现方式中，网络设备可以预先配置第一搜索空间与第一监测参数对应第一DRX参数、第二搜索空间与第二监测参数对应第二DRX参数，那么网络设备和终端可以根据终端被配置的DRX参数，确定发送、监测PDCCH所使用的搜索空间以及监测参数。
为了更清楚解释本申请上述实施例，下面进行举例说明。
实施例1、
传统的PDCCH搜索空间以及监测参数配置过程中，网络设备可以向终端发送RRC信令，该信令中可以包括添加的搜索空间列表(searchSpacesToAddModList)、删除的搜索空间列表(searchSpacesToReleaseList)，用于指示终端PDCCH的搜索空间。
为了减少对现有方案的改动，可以仍采用上述参数，用于指示终端第一搜索空间，该第一搜索空间对应的索引可以为正常(normal)。另外增加新的参数：节能的搜索空间列表(searchSpacesForPowerSavingToAddModList)，用于指示第二搜索空间，该第二搜索空间对应的索引可以为节能(powerSaving)。
网络设备还可以在上述消息中增加一个新的参数(usage)，该参数的值可以表示normal或powerSaving，即，该参数用于指示终端采用第一搜索空间监测PDCCH还是采用第二搜索空间监测PDCCH，该参数也可以被缺省，若该参数缺省，则终端采用默认值normal。或者，网络设备也可以通过DCI、MAC CE或RRC信令向终端发送包含上述参数(usage)的指示消息。
此后，若网络设备确定切换终端监测的PDCCH，可以通过DCI、MAC CE或RRC信令向终端发送包含上述参数(usage)的指示消息，以指示终端切换后的搜索空间。
实施例2、
传统的PDCCH搜索空间以及监测参数配置过程中，网络设备可以向终端发送RRC信令，该信令中可以包括监测时隙周期和偏移(monitoringSlotPeriodicityAndOffset)、待监测时隙中监测的起始符号(monitoringSymbolsWithinSlot)、待监测时隙中监测的时长(duration)、监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量(nrofCandidates)。
为了减少对现有方案的改动，可以仍采用上述参数，用于指示终端第一监测参数，该第一监测参数对应的索引可以为正常(normal)。具体的，监测周期为2个时隙，监测时隙为时隙0，在一个待监测时隙中从符号0、符号7开始监测，监测持续3个符号，即，终端则在符号0、符号1、符号2以及符号7、符号8、符号9上监测PDCCH，监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量(nrofCandidates)可以如表1所示。
表1
聚合等级18
聚合等级28
聚合等级46
聚合等级84
聚合等级16 2
另外增加新的参数：节能的监测时隙周期和偏移(monitoringSlotPeriodicityAndOffsetForPowerSaving)，表示监测周期为10个时隙，在时隙0上监测；节能的待监测时隙中监测的起始符号(monitoringSymbolsWithinSlot ForPowerSaving)和节能的待监测时隙中监测的时长(durationForPowerSaving)，表示在一个待监测时隙中监测符号0、符号1、符号2；监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量(nrofCandidates)如表2所示。
表2
聚合等级14
聚合等级24
聚合等级43
聚合等级82
聚合等级16 1
根据表1可知，在一个待监测时隙上，盲检的最大次数为8+8+6+4+2＝28次，根据第一监测参数可知，在10时隙(5个监测周期)中，终端盲检最大次数为28*5＝140次。根据表2可知，在一个待监测时隙上，盲检的最大次数为4+4+3+2+1＝14次，根据第二监测参数可知，在10个时隙(1个监测周期)中，终端盲检的最大次数为10次。故终端在采用第二监测参数时需要监测PDCCH的时间更短，有助于节省终端的功耗。
网络设备还可以增加一个新的参数(usage)，该参数的值可以表示normal或powerSaving，即，该参数用于指示终端采用第一监测参数还是采用第二监测参数，该参数也可以被缺省，若该参数缺省，则终端采用默认值normal。
此后，若网络设备确定切换终端监测的PDCCH，可以通过DCI、MAC CE或RRC信令向终端发送包含上述参数(usage)的指示消息。
实施例3、
终端可以有两种工作模式：正常工作模式(normal mode)和节能工作模式(power saving mode)。 每个搜索空间都对应一种工作模式对应，例如，搜索空间1和监测参数1对应中产工作模式，搜索空间2和监测参数2对应节能工作模式。网络设备向终端发送的搜索空间、监测参数的信息与实施例1、2中类似，此处不再赘述。
网络设备可以向终端发送DCI、MAC CE或RRC信令，该信令中包括工作模式参数(mode)，该参数的值可以表示正常工作模式或节能工作模式，用于指示终端的工作模式。
在该实施例中，网络设备指示终端的工作模式，并非仅仅用于指示终端监测PDCCH的搜索空间以及监测参数，还可以用于指示终端的工作带宽大小、激活的载波个数等等。
实施例4、
网络设备可以为终端配置一组搜索空间以及监测参数，用于终端未配置DRX时监测PDCCH；还可以为终端配置另一组搜索空间以及监测参数，用于终端配置了DRX时监测PDCCH。
网络设备可以向终端发送DCI、MAC CE、RRC等信令，该信令中可以包括该信令中包括用于指示是否为终端配置DRX的参数。此外，该信令中还可以进一步携带有DRX的配置参数，例如DRX的周期、激活期的时长等。
实施例5、
网络设备可以为终端配置搜索空间1以及监测参数1，用于终端在DRX的周期小于50ms时监测PDCCH；还可以为终端配置组搜索空间2以及监测参数2，用于终端在DRX周期大于等于50ms时监测PDCCH。网络设备向终端发送的搜索空间、监测参数的信息与实施例1、2中类似，此处不再赘述。
网络设备可以向终端发送DCI、MAC CE、RRC等信令，该信令中可以包括为终端配置的DRX参数，该DRX参数包括DRX周期等。终端和网络设备可以根据该DRX参数确定采用第一组搜索空间以及监测参数或第二组搜索空间以及监测参数。
实施例6、
网络设备可以为终端配置搜索空间1以及监测参数1，其中，监测参数1中包括DCI格式参数，指示终端监测的DCI格式为DCI-format0-0-AndFormat1-0、DCI-format2-0、DCI-format2-1、DCI-format2-2、DCI-format2-3；网络设备还可以为终端配置搜索空间2以及监测参数2，该监测参数2中也包括DCI格式参数，指示终端监测的DCI格式为DCI-format0-0-AndFormat1-0、DCI-format2-0。
上述DCI格式仅为举例，网络设备指示终端监测的DCI格式可以为5G系统中的DCI格式、LTE系统中的DCI格式或未来的其他DCI格式。例如，未来的一些DCI格式还可以指示终端是否进行一段时间的休眠、多长时间从休眠状态醒来等等。
网络设备向终端发送的搜索空间、监测参数的信息与实施例1、2中类似，此处不再赘述。
应当理解，上述具体实施例中增加的搜索空间列表名称、搜索空间索引的名称、参数名称、DCI格式的名称等均为举例，不对本申请实施例构成限制。
基于相同的技术构思，本申请实施例还提供了一种终端，用于实现上述方法实施例中终端的功能。如图7所示，该终端可以包括接收单元701和处理单元702。
其中，接收单元701，用于接收网络设备发送的第一信息，所述第一信息用于指示第一搜索空间和第二搜索空间，以及第一监测参数和第二监测参数，所述第一监测参数为所述终端在所述第一搜索空间内监测PDCCH的监测参数，所述第二监测参数为所述终端在所述第二搜索空间内监测PDCCH的监测参数，所述第一搜索空间与所述第二搜索空间不同，或者，所述第一搜索空间与所述第二搜索空间相同，但所述第一监测参数与所述第二监测参数不同。
处理单元702，用于在所述第一搜索空间内根据所述第一监测参数监测PDCCH，或者所述终端在所 述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，接收单元701还用于：接收所述网络设备发送的第二信息。
所述第二信息指示所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH；或者，所述第二信息指示所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，所述第二信息通过DCI、MAC CE或RRC信令发送给所述终端。
在一种可能的实现方式中，所述处理单元702具体用于：所述终端处于第一工作模式时，在所述第一搜索空间内根据所述第一监测参数监测PDCCH；所述终端处于第二工作模式时，在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，接收单元701还用于：接收所述网络设备发送的第三信息，所述第三信息用于指示所述终端的工作模式。
在一种可能的实现方式中，所述第三信息通过DCI、MAC CE或RRC信令发送给所述终端。
在一种可能的实现方式中，处理单元702具体用于：所述终端被配置了DRX时，在所述第一搜索空间内根据所述第一监测参数监测PDCCH；所述终端没有被配置DRX时，在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，处理单元702具体用于：所述终端被配置为第一DRX参数时，在所述第一搜索空间内根据所述第一监测参数监测PDCCH；所述终端被配置为第二DRX参数时，在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，所述监测参数包括以下参数中的一种或多种：监测的DCI的格式，监测周期，监测时隙，待监测时隙中监测的时长，待监测时隙中监测的起始符号，监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量。
在一种可能的实现方式中，所述终端还可以包括发送单元703，用于向网络设备发送用于指示所述终端工作模式的指示信息。
基于相同的技术构思，本申请实施例还提供了一种网络设备，用于实现上述方法实施例中网络设备的功能。如图8所示，该网络设备可以包括发送单元801和处理单元802。
其中，发送单元801，用于向终端发送第一信息，所述第一信息用于指示第一搜索空间和第二搜索空间，以及第一监测参数和第二监测参数，所述第一监测参数为所述终端在所述第一搜索空间内监测PDCCH的监测参数，所述第二监测参数为所述终端在所述第二搜索空间内监测PDCCH的监测参数，所述第一搜索空间与所述第二搜索空间不同，或者，所述第一搜索空间与所述第二搜索空间相同，但所述第一监测参数与所述第二监测参数不同；
处理单元802，用于通过所述发送单元801，在所述第一搜索空间内根据所述第一监测参数发送PDCCH，或者在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
在一种可能的实现方式中，发送单元801还用于：所述终端发送第二信息。所述第二信息指示所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH；或者，所述第二信息指示所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，所述第二信息通过下DCI、MAC CE或RRC信令发送给所述终端。
在一种可能的实现方式中，处理单元802具体用于：确定所述终端处于第一工作模式时，通过发送单元801在所述第一搜索空间内根据所述第一监测参数发送PDCCH；确定所述终端处于第二工作模式时，通过发送单元801在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
在一种可能的实现方式中，发送单元801还用于：向所述终端发送第三信息，所述第三信息用于指 示所述终端的工作模式。
在一种可能的实现方式中，所述第三信息通过DCI、MAC CE或RRC信令发送给所述终端。
在一种可能的实现方式中，处理单元802具体用于：确定所述终端被配置了非连续接收DRX时，通过发送单元801在所述第一搜索空间内根据所述第一监测参数发送PDCCH；确定所述终端没有被配置DRX时，通过发送单元801在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
在一种可能的实现方式中，处理单元802具体用于：确定所述终端被配置为第一DRX参数时，通过发送单元801在所述第一搜索空间内根据所述第一监测参数发送PDCCH；确定所述终端被配置为第二DRX参数时，通过发送单元801在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
在一种可能的实现方式中，所述监测参数包括以下参数中的一种或多种：监测的DCI的格式，监测周期，监测时隙，待监测周期中监测的时长，待监测时隙中监测的起始符号，监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量。
在一种可能的实现方式中，该网络设备还可以包括接收单元803，用于接收终端发送的用于指示该终端工作模式的指示信息。
需要说明的是，以上各个单元的划分仅仅是一种逻辑功能的划分，实际实现时可以全部或部分集成到一个物理实体上，也可以物理上分开。且这些单元可以全部以软件通过处理元件调用的形式实现；也可以全部以硬件的形式实现；还可以部分单元通过软件通过处理元件调用的形式实现，部分单元通过硬件的形式实现。例如，接收单元、发送的那样可以独立设置，也可以组成一个收发单元。此外，收发单元与处理单元可以集成在一起，也可以独立实现。这里所述的处理元件可以是一种集成电路，具有信号的处理能力。在实现过程中，上述方法的各步骤或以上各个单元可以通过处理器元件中的硬件的集成逻辑电路或者软件形式的指令完成。此外，以上发送单元是一种控制发送的单元，可以通过发送装置，例如天线和射频装置发送信息。同理，接收单元也可以通过接收装置，例如天线和射频装置接收信息。
以上这些单元可以是被配置成实施以上方法的一个或多个集成电路，例如：一个或多个特定集成电路(application specific integrated circuit，ASIC)，或，一个或多个微处理器，或，一个或者多个现场可编程门阵列(field programmable gate array，FPGA)等。再如，当以上某个单元通过处理元件调度程序的形式实现时，该处理元件可以是通用处理器，例如中央处理器(central processing unit，CPU)或其它可以调用程序的处理器。再如，这些单元可以集成在一起，以片上系统(system-on-a-chip，SOC)的形式实现。
基于相同的技术构思，本申请实施例还提供了一种终端，用于实现上述方法实施例中终端的功能。如图9所示，该终端900可以包括处理器901、存储器902和通信接口903。进一步地，还可以包括通信总线904。
具体地，处理器901可以是一个通用CPU，微处理器，ASIC，或一个或多个用于控制本申请方案程序执行的集成电路。
通信总线904可包括一通路，在上述组件之间传送信息。
通信接口903，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
存储器902可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory， EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器902可以是独立存在，通过总线与处理器901相连接。存储器902也可以和处理器901集成在一起。
其中，存储器902用于存储执行本申请方案的应用程序代码，并由处理器901来控制执行。处理器901用于执行存储器902中存储的应用程序代码，从而实现本申请上述实施例提供的通信方法。
或者，可选的，本申请实施例中，也可以是处理器901执行本申请上述实施例提供的通信方法中的相关功能，通信接口903负责与其他设备或通信网络通信，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器901可以包括一个或多个CPU。
在具体实现中，作为一种实施例，该终端可以包括多个处理器。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
具体地，处理器901可以调用存储器902存储的程序执行以下步骤：
通过通信接口903接收网络设备发送的第一信息，所述第一信息用于指示第一搜索空间和第二搜索空间，以及第一监测参数和第二监测参数，所述第一监测参数为所述终端在所述第一搜索空间内监测物理下行控制信道PDCCH的监测参数，所述第二监测参数为所述终端在所述第二搜索空间内监测PDCCH的监测参数，所述第一搜索空间与所述第二搜索空间不同，或者，所述第一搜索空间与所述第二搜索空间相同，但所述第一监测参数与所述第二监测参数不同。
通过通信接口903，在所述第一搜索空间内根据所述第一监测参数监测PDCCH，或者所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，处理器901还用于：通过通信接口903接收所述网络设备发送的第二信息；所述第二信息指示所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH；或者，所述第二信息指示所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，所述第二信息通过下行控制信息DCI、介质访问控制层控制元素MAC CE或无线资源控制RRC信令发送给所述终端。
在一种可能的实现方式中，所述处理器901具体用于：所述终端处于第一工作模式时，通过通信接口903在所述第一搜索空间内根据所述第一监测参数监测PDCCH；所述终端处于第二工作模式时，通过通信接口903在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，处理器901还用于：通过通信接口903接收所述网络设备发送的第三信息，所述第三信息用于指示所述终端的工作模式。
在一种可能的实现方式中，所述第三信息通过DCI、MAC CE或RRC信令发送给所述终端。
在一种可能的实现方式中，所述处理器901具体用于：所述终端被配置了非连续接收DRX时，通过通信接口903在所述第一搜索空间内根据所述第一监测参数监测PDCCH；所述终端没有被配置DRX时，通过通信接口903在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，所述处理器901具体用于：所述终端被配置为第一DRX参数时，通过通信接口903在所述第一搜索空间内根据所述第一监测参数监测PDCCH；所述终端被配置为第二DRX参数时，通过通信接口903在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，所述监测参数包括以下参数中的一种或多种：监测的DCI的格式；监测周期；监测时隙；待监测时隙中监测的时长；待监测时隙中监测的起始符号；监测的PDCCH的聚合等 级以及在所述聚合等级下需要监测的PDCCH候选位置的数量。
基于相同的技术构思，本申请实施例还提供了一种网络设备，用于实现上述方法实施例中终端的功能。如图10所示，该终端1000可以包括处理器1001、存储器1002和通信接口1003。进一步地，还可以包括通信总线1004。
具体地，处理器1001可以是一个通用CPU，微处理器，ASIC，或一个或多个用于控制本申请方案程序执行的集成电路。
通信总线1004可包括一通路，在上述组件之间传送信息。
通信接口1003，使用任何收发器一类的装置，用于与其他设备或通信网络通信，如以太网，无线接入网(radio access network，RAN)，无线局域网(wireless local area networks，WLAN)等。
存储器1002可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器1002可以是独立存在，通过总线与处理器1001相连接。存储器1002也可以和处理器1001集成在一起。
其中，存储器1002用于存储执行本申请方案的应用程序代码，并由处理器1001来控制执行。处理器1001用于执行存储器1002中存储的应用程序代码，从而实现本申请上述实施例提供的通信方法。
或者，可选的，本申请实施例中，也可以是处理器1001执行本申请上述实施例提供的通信方法中的相关功能，通信接口1003负责与其他设备或通信网络通信，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，处理器1001可以包括一个或多个CPU。
在具体实现中，作为一种实施例，该网络设备可以包括多个处理器。这些处理器中的每一个可以是一个单核(single-CPU)处理器，也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
具体地，处理器1001可以调用存储器1002存储的程序执行以下步骤：
通过通信接口1003向终端发送第一信息，所述第一信息用于指示第一搜索空间和第二搜索空间，以及第一监测参数和第二监测参数，所述第一监测参数为所述终端在所述第一搜索空间内监测物理下行控制信道PDCCH的监测参数，所述第二监测参数为所述终端在所述第二搜索空间内监测PDCCH的监测参数，所述第一搜索空间与所述第二搜索空间不同，或者，所述第一搜索空间与所述第二搜索空间相同，但所述第一监测参数与所述第二监测参数不同。
通过通信接口1003在所述第一搜索空间内根据所述第一监测参数发送PDCCH，或者在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
在一种可能的实现方式中，处理器1001还用于：通过通信接口1003向所述终端发送第二信息。
所述第二信息指示所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH；或者，所述第二信息指示所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
在一种可能的实现方式中，所述第二信息通过下行控制信息DCI、介质访问控制层控制元素MAC CE或无线资源控制RRC信令发送给所述终端。
在一种可能的实现方式中，处理器1001具体用于：确定所述终端处于第一工作模式时，通过通信接口1003在所述第一搜索空间内根据所述第一监测参数发送PDCCH；确定所述终端处于第二工作模式时， 通过通信接口1003在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
在一种可能的实现方式中，处理器1001还用于：通过通信接口1003向所述终端发送第三信息，所述第三信息用于指示所述终端的工作模式。
在一种可能的实现方式中，所述第三信息通过DCI、MAC CE或RRC信令发送给所述终端。
在一种可能的实现方式中，处理器1001具体用于：确定所述终端被配置了非连续接收DRX时，通过通信接口1003在所述第一搜索空间内根据所述第一监测参数发送PDCCH；确定所述终端没有被配置DRX时，通过通信接口1003在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
在一种可能的实现方式中，处理器1001具体用于：确定所述终端被配置为第一DRX参数时，通过通信接口1003在所述第一搜索空间内根据所述第一监测参数发送PDCCH；确定所述终端被配置为第二DRX参数时，通过通信接口1003在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
在一种可能的实现方式中，所述监测参数包括以下参数中的一种或多种：监测的DCI的格式；监测周期；监测时隙；待监测周期中监测的时长；待监测时隙中监测的起始符号；监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量。
基于相同的技术构思，本申请实施例还提供了一种通信系统，包括上述终端和网络设备。
本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机指令，当所述指令在计算机上运行时，使得计算机执行如上述方法实施例中终端所执行的功能。
本申请实施例提供了一种计算机可读存储介质，该计算机可读存储介质存储有计算机指令，当所述指令在计算机上运行时，使得计算机执行如上述方法实施例中网络设备所执行的功能。
本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如上述方法实施例中终端所执行的功能。
本申请实施例提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行如上述方法实施例中网络设备所执行的功能。
本申请提供一种芯片，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现上述方法实施例中终端所执行的功能。
本申请提供一种芯片，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现上述方法实施例中网络设备所执行的功能。
显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种通信方法，其特征在于，包括：
    终端接收网络设备发送的第一信息，所述第一信息用于指示第一搜索空间和第二搜索空间，以及第一监测参数和第二监测参数，所述第一监测参数为所述终端在所述第一搜索空间内监测物理下行控制信道PDCCH的监测参数，所述第二监测参数为所述终端在所述第二搜索空间内监测PDCCH的监测参数，所述第一搜索空间与所述第二搜索空间不同，或者，所述第一搜索空间与所述第二搜索空间相同，但所述第一监测参数与所述第二监测参数不同；
    所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH，或者所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
  2. 如权利要求1所述的方法，其特征在于，还包括：
    所述终端接收所述网络设备发送的第二信息；
    所述第二信息指示所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH；或者，
    所述第二信息指示所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
  3. 如权利要求2所述的方法，其特征在于，所述第二信息通过下行控制信息DCI、介质访问控制层控制元素MAC CE或无线资源控制RRC信令发送给所述终端。
  4. 如权利要求1所述的方法，其特征在于，所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH，或者所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH，包括：
    所述终端处于第一工作模式时，在所述第一搜索空间内根据所述第一监测参数监测PDCCH；
    所述终端处于第二工作模式时，在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
  5. 如权利要求4所述的方法，其特征在于，还包括：
    所述终端接收所述网络设备发送的第三信息，所述第三信息用于指示所述终端的工作模式。
  6. 如权利要求5所述的方法，其特征在于，所述第三信息通过DCI、MAC CE或RRC信令发送给所述终端。
  7. 如权利要求1所述的方法，其特征在于，所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH，或者所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH，包括：
    所述终端被配置了非连续接收DRX时，在所述第一搜索空间内根据所述第一监测参数监测PDCCH；
    所述终端没有被配置DRX时，在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
  8. 如权利要求1所述的方法，其特征在于，所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH，或者所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH，包括：
    所述终端被配置为第一DRX参数时，在所述第一搜索空间内根据所述第一监测参数监测PDCCH；
    所述终端被配置为第二DRX参数时，在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
  9. 如权利要求1-8中任一项所述的方法，其特征在于，所述监测参数包括以下参数中的一种或多种：
    监测的DCI的格式；
    监测周期；
    监测时隙；
    待监测时隙中监测的时长；
    待监测时隙中监测的起始符号；
    监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量。
  10. 一种通信方法，其特征在于，包括：
    网络设备向终端发送第一信息，所述第一信息用于指示第一搜索空间和第二搜索空间，以及第一监测参数和第二监测参数，所述第一监测参数为所述终端在所述第一搜索空间内监测物理下行控制信道PDCCH的监测参数，所述第二监测参数为所述终端在所述第二搜索空间内监测PDCCH的监测参数，所述第一搜索空间与所述第二搜索空间不同，或者，所述第一搜索空间与所述第二搜索空间相同，但所述第一监测参数与所述第二监测参数不同；
    所述网络设备在所述第一搜索空间内根据所述第一监测参数发送PDCCH，或者在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
  11. 如权利要求10所述的方法，其特征在于，还包括：
    所述网络设备向所述终端发送第二信息；
    所述第二信息指示所述终端在所述第一搜索空间内根据所述第一监测参数监测PDCCH；或者，
    所述第二信息指示所述终端在所述第二搜索空间内根据所述第二监测参数监测PDCCH。
  12. 如权利要求11所述的方法，其特征在于，所述第二信息通过下行控制信息DCI、介质访问控制层控制元素MAC CE或无线资源控制RRC信令发送给所述终端。
  13. 如权利要求10所述的方法，其特征在于，所述网络设备在所述第一搜索空间内根据所述第一监测参数发送PDCCH，或者在所述第二搜索空间内根据所述第二监测参数发送PDCCH，包括：
    所述网络设备确定所述终端处于第一工作模式时，在所述第一搜索空间内根据所述第一监测参数发送PDCCH；
    所述网络设备确定所述终端处于第二工作模式时，在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
  14. 如权利要求13所述的方法，其特征在于，还包括：
    所述网络设备向所述终端发送第三信息，所述第三信息用于指示所述终端的工作模式。
  15. 如权利要求14所述的方法，其特征在于，所述第三信息通过DCI、MAC CE或RRC信令发送给所述终端。
  16. 如权利要求10所述的方法，其特征在于，所述网络设备在所述第一搜索空间内根据所述第一监测参数发送PDCCH，或者在所述第二搜索空间内根据所述第二监测参数发送PDCCH，包括：
    所述网络设备确定所述终端被配置了非连续接收DRX时，在所述第一搜索空间内根据所述第一监测参数发送PDCCH；
    所述网络设备确定所述终端没有被配置DRX时，在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
  17. 如权利要求10所述的方法，其特征在于，所述网络设备在所述第一搜索空间内根据所述第一监测参数发送PDCCH，或者在所述第二搜索空间内根据所述第二监测参数发送PDCCH，包括：
    所述网络设备确定所述终端被配置为第一DRX参数时，在所述第一搜索空间内根据所述第一监测参数发送PDCCH；
    所述网络设备确定所述终端被配置为第二DRX参数时，在所述第二搜索空间内根据所述第二监测参数发送PDCCH。
  18. 如权利要求10-17中任一项所述的方法，其特征在于，所述监测参数包括以下参数中的一种或多种：
    监测的DCI的格式；
    监测周期；
    监测时隙；
    待监测周期中监测的时长；
    待监测时隙中监测的起始符号；
    监测的PDCCH的聚合等级以及在所述聚合等级下需要监测的PDCCH候选位置的数量。
  19. 一种终端，其特征在于，包括：处理器、存储器和通信接口，所述存储器用于存储程序，所述处理器调用存储器存储的程序，通过所述通信接口执行权利要求1至9任一项所述的方法。
  20. 一种网络设备，其特征在于，包括：处理器、存储器和通信接口，所述存储器用于存储程序，所述处理器调用存储器存储的程序，通过所述通信接口执行权利要求10至18任一项所述的方法。
  21. 一种通信系统，其特征在于，包括如权利要求19所述的终端以及如权利要求20所述的网络设备。
  22. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质存储有计算机指令，当所述指令在计算机上运行时，使得所述计算机执行如权利要求1-18中任一项所述的方法。
  23. 一种包含指令的计算机程序产品，其特征在于，当其在计算机上运行时，使得计算机执行如权利要求1-18中任一项所述的方法。
  24. 一种芯片，其特征在于，所述芯片与存储器相连，用于读取并执行所述存储器中存储的软件程序，以实现如所述计算机执行如权利要求1-18中任一项所述的方法。
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