WO2023078422A1 - 一种通信方法及装置 - Google Patents

一种通信方法及装置 Download PDF

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Publication number
WO2023078422A1
WO2023078422A1 PCT/CN2022/130028 CN2022130028W WO2023078422A1 WO 2023078422 A1 WO2023078422 A1 WO 2023078422A1 CN 2022130028 W CN2022130028 W CN 2022130028W WO 2023078422 A1 WO2023078422 A1 WO 2023078422A1
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WO
WIPO (PCT)
Prior art keywords
cell
control channel
physical downlink
subcarrier interval
time unit
Prior art date
Application number
PCT/CN2022/130028
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English (en)
French (fr)
Inventor
花梦
王轶
彭金磷
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 EP22889443.2A priority Critical patent/EP4418785A1/en
Publication of WO2023078422A1 publication Critical patent/WO2023078422A1/zh
Priority to US18/654,157 priority patent/US20240284458A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/26025—Numerology, i.e. varying one or more of symbol duration, subcarrier spacing, Fourier transform size, sampling rate or down-clocking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows

Definitions

  • the present application relates to the technical field of communication, and in particular to a communication method and device.
  • the secondary cell cannot schedule the primary cell across carriers, and a scheduled cell can only have one scheduling cell.
  • the load of the primary cell may be high
  • the current agreement is discussing the introduction of using the secondary cell to schedule the primary cell, and the primary cell can be controlled by the physical downlink control channel (PDCCH) on both the primary cell itself and the secondary cell.
  • PDCCH physical downlink control channel
  • both the primary cell and the secondary cell can schedule the primary cell, how to determine the actual blind detection (BD)/control channel element (CCE) monitoring upper limit of the terminal equipment in the two scheduling cells is an urgent problem to be solved .
  • BD blind detection
  • CCE control channel element
  • This application provides a communication method and device to solve the problem of how to determine the upper limit and/or non-overlapping of the number of PDCCH candidates monitored in one time unit when two cells can jointly schedule one of the two cells The upper limit of the number of CCEs.
  • the present application provides a communication method, which includes:
  • the terminal device determines the first indication information, and sends the first indication information to the access network device; wherein, the first indication information is used to indicate one or both of the first scheme and the second scheme supported by the terminal equipment; the first Both the scheme and the second scheme are used to determine the maximum number of physical downlink control channel candidates to be monitored by the terminal equipment and the number of physical downlink control channel candidates to be monitored when the first cell and the second cell jointly schedule the first cell. At least one of the maximum number of non-overlapping control channel elements; wherein, the first solution includes: the first parameter and the second parameter are preset by the protocol;
  • the second scheme includes: the first parameter and the second parameter are allowed to be configured by the access network device; or, the second scheme includes: the first parameter and the second parameter are preset by the protocol; the preset in the second scheme The first parameter is different from the first parameter preset in the first scheme, and/or the second parameter preset in the second scheme is different from the second parameter preset in the first scheme;
  • the first parameter and the second parameter are used to determine the first total quantity, the third total quantity, the second total quantity and the fourth total quantity;
  • the first total quantity and the third total quantity corresponding to the first scheme meet any of the following items, and the first total quantity and the third total quantity corresponding to the second scheme meet any of the following items:
  • the first total number refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval number, and the maximum value of the sum of the number of physical downlink control channel candidates for scheduling the first cell that the terminal equipment needs to monitor on the second cell;
  • the third total number refers to one corresponding to the first subcarrier interval In time units, on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the first subcarrier spacing, the number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal equipment needs to monitor, and the number of control channel elements in the second subcarrier spacing On the cell, the maximum value of the sum of the numbers of non-overlapping control channel elements in the physical downlink control channel candidates for scheduling the first cell that the terminal device needs to monitor;
  • the first total number refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval
  • the maximum number of the number refers to a time unit corresponding to the first subcarrier interval, and on all scheduling cells whose subcarrier intervals of the active downlink bandwidth part are the first subcarrier interval, the terminal equipment needs to The maximum number of non-overlapping control channel elements among the monitored physical downlink control channel candidates;
  • the second total quantity and the fourth total quantity corresponding to the first scheme are full of any of the following, and the second total quantity and the fourth total quantity corresponding to the second scheme are full of any of the following:
  • the second total quantity refers to that in a time unit corresponding to the second subcarrier interval, except on the second cell, the physical downlink control channel candidate for scheduling the first cell that the terminal device needs to monitor, in The maximum number of physical downlink control channel candidates to be monitored by the terminal equipment on all scheduling cells where the subcarrier spacing of the activated downlink bandwidth part is the second subcarrier spacing;
  • the fourth total number refers to In a time unit corresponding to the second subcarrier interval, except for the non-overlapping control channel elements in the physical downlink control channel candidates for scheduling the first cell that the terminal device needs to monitor on the second cell, in The maximum number of non-overlapping control channel elements among the physical downlink control channel candidates to be monitored by the terminal device on all scheduling cells where the subcarrier spacing of the activated downlink bandwidth part is the second subcarrier spacing;
  • the second total quantity refers to that in a time unit corresponding to the second subcarrier interval, on all scheduling cells whose subcarrier intervals of the activated downlink bandwidth part are the second subcarrier interval, the terminal device
  • the maximum value of the number of physical downlink control channel candidates to be monitored; the fourth total number means that in a time unit corresponding to the second subcarrier interval, the subcarrier interval in the activated downlink bandwidth part is the On all scheduling cells of the second subcarrier interval, the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal device needs to monitor; wherein, the subcarrier interval of the first cell is equal to the The first subcarrier spacing, the subcarrier spacing of the second cell is equal to the second subcarrier spacing.
  • the terminal device can indicate which schemes it supports through the first indication information. Different schemes correspond to different monitoring upper limits, that is, corresponding to the maximum number of different physical downlink control channel candidates and the maximum number of physical downlink control channel candidates.
  • the maximum number of overlapping control channel elements can therefore enable the access network device to determine how to configure a corresponding search space for the terminal device.
  • the terminal device receives third indication information from the access network device, where the third indication information is used to indicate at least one of the value of the first parameter and the value of the second parameter in the second scheme item.
  • the terminal device receives second indication information from the access network device, where the second indication information is used to indicate that the first scheme or the second scheme is adopted.
  • the access network device can clearly indicate which scheme to adopt through the second indication information, so that the terminal device can accurately determine the maximum number of physical downlink control channel candidates to be monitored and the non-overlapping control channel elements The maximum value of the number of .
  • the terminal device determines the maximum number of physical downlink control channel candidates to be monitored and the maximum number of physical downlink control channel candidates to be monitored according to the scheme indicated by the second indication information. At least one item of the maximum number of non-overlapping control channel elements in the physical downlink control channel candidates.
  • control channel transmission method including:
  • the access network device receives first indication information from the terminal device; wherein, the first indication information is used to indicate one or both of the first scheme and the second scheme supported by the terminal device;
  • the access network device respectively determines configurations of the search space sets of the first cell and the second cell according to the first scheme or the second scheme.
  • the first scheme and the second scheme are both used to determine the physical downlink control that the terminal device needs to monitor when the first cell and the second cell jointly schedule the first cell At least one of the maximum number of channel candidates and the maximum number of non-overlapping control channel elements in physical downlink control channel candidates to be monitored;
  • both the first scheme and the second scheme are used to determine the maximum number of physical downlink control channel candidates to be monitored by the terminal equipment and the physical downlink control channel to be monitored when the first cell and the second cell jointly schedule the first cell. at least one of the maximum number of non-overlapping control channel elements among the control channel candidates;
  • the first solution includes: the first parameter and the second parameter are preset by the protocol;
  • the second scheme includes: the first parameter and the second parameter are allowed to be configured by the access network device; or, the second scheme includes: the first parameter and the second parameter are preset by the protocol; the preset in the second scheme The first parameter is different from the first parameter preset in the first scheme, and/or the second parameter preset in the second scheme is different from the second parameter preset in the first scheme;
  • the first parameter and the second parameter are used to determine the first total quantity, the third total quantity, the second total quantity and the fourth total quantity;
  • the first total quantity and the third total quantity corresponding to the first scheme meet any of the following items, and the first total quantity and the third total quantity corresponding to the second scheme meet any of the following items:
  • the first total number refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval number, and the maximum value of the sum of the number of physical downlink control channel candidates for scheduling the first cell that the terminal equipment needs to monitor on the second cell;
  • the third total number refers to one corresponding to the first subcarrier interval In time units, on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the first subcarrier spacing, the number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal equipment needs to monitor, and the number of control channel elements in the second subcarrier spacing On the cell, the maximum value of the sum of the numbers of non-overlapping control channel elements in the physical downlink control channel candidates for scheduling the first cell that the terminal device needs to monitor;
  • the first total number refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval
  • the maximum number of the number refers to a time unit corresponding to the first subcarrier interval, and on all scheduling cells whose subcarrier intervals of the active downlink bandwidth part are the first subcarrier interval, the terminal equipment needs to The maximum number of non-overlapping control channel elements among the monitored physical downlink control channel candidates;
  • the second total quantity and the fourth total quantity corresponding to the first scheme meet any of the following items, and the second total quantity and the fourth total quantity corresponding to the second scheme meet any of the following items:
  • the second total quantity refers to that in a time unit corresponding to the second subcarrier interval, except on the second cell, the physical downlink control channel candidate of the first cell that the terminal device needs to monitor, the subcarriers in the active downlink bandwidth part
  • the carrier interval is the maximum value of the number of physical downlink control channel candidates that the terminal device needs to monitor on all scheduling cells with the second subcarrier interval
  • the fourth total number refers to a time unit corresponding to the second subcarrier interval, Except for the non-overlapping control channel elements in the physical downlink control channel candidates of the scheduling first cell that the terminal equipment needs to monitor on the second cell, all scheduling cells whose subcarrier spacing in the active downlink bandwidth part is the second subcarrier spacing above, the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal equipment needs to monitor;
  • the second total quantity refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the second subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the second subcarrier interval
  • the maximum number of the number; the fourth total number means that in a time unit corresponding to the second subcarrier spacing, on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the second subcarrier spacing, the terminal equipment needs to The maximum number of non-overlapping control channel elements among the monitored physical downlink control channel candidates;
  • the subcarrier spacing of the first cell is equal to the first subcarrier spacing
  • the subcarrier spacing of the second cell is equal to the second subcarrier spacing
  • the first solution further includes at least one of the following:
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of physical downlink control channel candidates to be monitored for scheduling the first cell is determined according to the first number, and the first The number is the preset maximum value of the number of physical downlink control channel candidates to be monitored in the time unit corresponding to the second subcarrier interval;
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of physical downlink control channel candidates to be monitored for scheduling the first cell is not determined according to the first number, and the second A preset maximum value of the number of physical downlink control channel candidates to be monitored in the time unit corresponding to the second subcarrier interval;
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of physical downlink control channel candidates to be monitored for scheduling the first cell may be greater than the first number, and the first The number is the preset maximum value of the number of physical downlink control channel candidates to be monitored in the time unit corresponding to the second subcarrier interval;
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates to be monitored is determined according to the second number, and the second The number is the preset maximum value of the number of non-overlapping control channel elements in the physical downlink control channel candidates to be monitored in the time unit corresponding to the second subcarrier interval;
  • the terminal device is on the second cell, in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates to be monitored is not determined according to the second number, the second The second number is the preset maximum value of the number of non-overlapping control channel elements in the physical downlink control channel candidates to be monitored in the time unit corresponding to the second subcarrier interval;
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates to be monitored may be greater than the second number, and the second The number is the preset maximum value of the number of non-overlapping control channel elements among the physical downlink control channel candidates to be monitored in the time unit corresponding to the second subcarrier interval;
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of physical downlink control channel candidates to be monitored for scheduling the first cell is the third number and the first total The minimum value in the number is multiplied by the third parameter, and the third number is the preset maximum value of the number of physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval; the third parameter is allowed by the access Network equipment configuration;
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of non-overlapping control channel elements that need to be monitored for scheduling the first cell's physical downlink control channel candidates is The minimum value of the fourth quantity and the second total quantity is multiplied by the third parameter, and the fourth quantity is the number of non-overlapping control channel elements in the physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval preset maximum value.
  • the terminal device is on the second cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of physical downlink control channel candidates to be monitored for scheduling the first cell is the third number and the first total The minimum value in the number is multiplied by the difference between 1 and the third parameter, and the third number is the preset maximum value of the number of physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval; the third parameter is allowed to be configured by access network equipment;
  • the terminal device is on the second cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of non-overlapping control channel elements that need to be monitored for scheduling the first cell's physical downlink control channel candidates is The minimum value of the fourth number and the second total number is multiplied by the difference between 1 and the third parameter, and the fourth number is the non-overlapping control among the physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval The default maximum number of channel elements.
  • All search spaces on the second cell used to schedule the first cell are configured within 3 consecutive symbols of a time unit corresponding to the first subcarrier interval;
  • All the search spaces on the first cell and the second cell used to schedule the first cell are configured within 3 consecutive symbols of a time unit corresponding to the first subcarrier interval; this method can be realized by using the PDCCH monitoring resources of one cell PDCCH monitoring of two scheduling cells;
  • All search spaces on the second cell used to schedule the first cell are configured within 3 consecutive symbols of a time unit corresponding to the second subcarrier interval. Within 3 consecutive symbols, the storage space required by the terminal equipment when monitoring PDCCH candidates can be reduced.
  • the second solution further includes at least one of the following:
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of physical downlink control channel candidates to be monitored for scheduling the first cell is based on the first number and the second total The number is determined, the first number is the preset maximum value of the number of physical downlink control channel candidates to be monitored in the time unit corresponding to the second subcarrier interval;
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates to be monitored is based on the second number and the fourth total The number is determined, and the second number is a preset maximum value of the number of non-overlapping control channel elements in the physical downlink control channel candidates to be monitored in the time unit corresponding to the second subcarrier interval.
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of physical downlink control channel candidates to be monitored for scheduling the first cell is the third number multiplied by the third Parameters, the third number is the preset maximum number of physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval; the third parameter is allowed to be configured by the access network device;
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of non-overlapping control channel elements that need to be monitored for scheduling the first cell's physical downlink control channel candidates is The fourth quantity is multiplied by the third parameter, and the fourth quantity is a preset maximum value of the number of non-overlapping control channel elements in the physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval.
  • the terminal device is on the second cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of physical downlink control channel candidates to be monitored for scheduling the first cell is the third number multiplied by 1 and The difference of the third parameter, the third number is the preset maximum value of the number of physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval; the third parameter is allowed to be configured by the access network device;
  • the terminal device is on the second cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of non-overlapping control channel elements that need to be monitored for scheduling the first cell's physical downlink control channel candidates is The fourth number is multiplied by the difference between 1 and the third parameter, and the fourth number is the preset maximum number of non-overlapping control channel elements in the physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval value.
  • the preset value of the first parameter is 1, and the preset value of the second parameter is 0.
  • the access network device sends third indication information to the terminal device, where the third indication information is used to indicate at least one of the value of the first parameter and the value of the second parameter in the second scheme .
  • the sum of the value of the first parameter and the value of the second parameter is 1.
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the physical downlink control used to schedule the first cell that needs to be monitored
  • the maximum value of the number of channel candidates is the minimum value of the third number and the first total number multiplied by the third parameter
  • the third number is the number of physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval
  • the preset maximum value of the number; the third parameter is allowed to be configured by the access network device;
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of non-overlapping control channel elements that need to be monitored for scheduling the first cell's physical downlink control channel candidates is The minimum value of the fourth quantity and the second total quantity is multiplied by the third parameter, and the fourth quantity is the number of non-overlapping control channel elements in the physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval preset maximum value.
  • the terminal device on the second cell, in a time unit corresponding to the first subcarrier interval, needs to monitor the physical downlink control used to schedule the first cell
  • the maximum value of the number of channel candidates is the minimum value of the third number and the first total number multiplied by the difference between 1 and the third parameter, and the third number is the physical The preset maximum value of the number of downlink control channel candidates; the third parameter is allowed to be configured by the access network device;
  • the terminal device is on the second cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of non-overlapping control channel elements that need to be monitored for scheduling the first cell's physical downlink control channel candidates is The minimum value of the fourth number and the second total number is multiplied by the difference between 1 and the third parameter, and the fourth number is the non-overlapping control among the physical downlink control channel candidates to be monitored in the time unit corresponding to the first subcarrier interval The default maximum number of channel elements.
  • the method further includes: the access network device sending second indication information to the terminal device, where the second indication information is used to indicate the adoption of the first scheme or the second scheme.
  • the present application further provides a communication device, which can implement any method or any implementation manner provided in the foregoing first aspect.
  • the communication device may be realized by hardware, may be realized by software, or may be realized by executing corresponding software by hardware.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication device includes: a processor, where the processor is configured to support the communication device to execute the method described in the above first aspect.
  • the communication device may also include a memory, which may be coupled to the processor, which holds program instructions and data necessary for the communication device.
  • the communication device further includes an interface circuit for supporting the communication device to communicate with other communication devices.
  • the structure of the communication device includes a processing unit and a communication unit, and these units can perform corresponding functions in the foregoing method examples.
  • these units can perform corresponding functions in the foregoing method examples.
  • the present application further provides a communication device, which can implement any method or any implementation manner provided in the foregoing second aspect.
  • the communication device may be realized by hardware, may be realized by software, or may be realized by executing corresponding software by hardware.
  • the hardware or software includes one or more units or modules corresponding to the above functions.
  • the communication device includes: a processor, where the processor is configured to support the communication device to execute the method shown in the second aspect above.
  • the communication device may also include a memory, which may be coupled to the processor, which holds program instructions and data necessary for the communication device.
  • the communication device further includes an interface circuit for supporting the communication device to communicate with other communication devices.
  • the structure of the communication device includes a processing unit and a communication unit, and these units can perform corresponding functions in the above method examples.
  • these units can perform corresponding functions in the above method examples.
  • a communication device including a processor and an interface circuit, and the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or send signals from the processor
  • the processor is configured to execute the computer program or instruction stored in the memory to implement the method in any possible implementation manner of the foregoing first aspect.
  • the apparatus further includes a memory in which computer programs or instructions are stored.
  • a communication device including a processor and an interface circuit, and the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or send signals from the processor
  • the processor is configured to execute the computer program or instruction stored in the memory to implement the method in any possible implementation manner of the aforementioned second aspect.
  • the apparatus further includes a memory in which computer programs or instructions are stored.
  • a chip in a seventh aspect, includes a processor, and may further include a memory, the processor is coupled to the memory, and is used to execute computer programs or instructions stored in the memory, so that the chip implements the aforementioned first aspect.
  • a chip in an eighth aspect, includes a processor, and may also include a memory, the processor is coupled to the memory, and is used to execute the computer program or instructions stored in the memory, so that the chip implements the aforementioned second aspect.
  • a computer-readable storage medium in which a computer program or instruction is stored, and when the computer program or instruction is run on a computer, the computer realizes the aforementioned first aspect A method in any possible implementation of .
  • a computer-readable storage medium is provided, and a computer program or instruction is stored in the computer-readable storage medium, and when the computer program or instruction is run on a computer, the computer realizes the aforementioned second aspect A method in any possible implementation of .
  • a computer program product including computer-readable instructions is provided, and when the computer-readable instructions are run on a computer, the computer is made to implement the method in any possible implementation manner of the aforementioned first aspect .
  • a computer program product including computer-readable instructions is provided, and when the computer-readable instructions are run on a computer, the computer is made to implement the method in any possible implementation manner of the aforementioned second aspect .
  • a communication system in a thirteenth aspect, includes the device (such as a terminal device) for realizing the first aspect and the device (such as an access network device) for realizing the second aspect.
  • FIG. 1 is a schematic structural diagram of a communication system applicable to the present application
  • FIG. 2 is a schematic flow chart of a communication method provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a communication device provided in an embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • new radio new radio
  • LTE long term evolution
  • next generation mobile communication system etc., without limitation here.
  • a terminal device may be referred to as a terminal for short.
  • the terminal device can communicate with one or more core networks via a radio access network (radio access network, RAN).
  • the terminal device may be a device with a wireless transceiver function or a chip that may be installed in the device.
  • a terminal device may also be referred to as user equipment (UE), access terminal, subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or user device.
  • UE user equipment
  • the terminal equipment in this application can be mobile phone (mobile phone), tablet computer (Pad), computer with wireless transceiver function, virtual reality (virtual reality, VR) terminal, augmented reality (augmented reality, AR) terminal, wearable device , vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, or smart home appliances, etc.
  • virtual reality virtual reality
  • AR augmented reality
  • wearable device vehicles, drones, helicopters, airplanes, ships, robots, robotic arms, or smart home appliances, etc.
  • the terminal device in this application can be widely used in communication in various scenarios, including but not limited to at least one of the following scenarios: enhanced mobile broadband (enhanced mobile broadband, eMBB), ultra-reliable low-latency communication (ultra-reliable low- latency communication (URLLC), device-to-device (D2D), vehicle to everything (V2X), machine-type communication (MTC), massive machine-type communication (massive machine- type communication, mMTC), Internet of Things (IOT), virtual reality, augmented reality, industrial control, automatic driving, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, or smart city, etc. .
  • This application does not limit the specific technology and specific equipment form adopted by the terminal.
  • Access network equipment can be base station (base station), node B (NodeB), evolved node B (evolved NodeB, eNodeB), transmission reception point (transmission reception point, TRP), fifth generation (5th generation, 5G) mobile
  • the access network equipment may be
  • the interaction between terminal equipment and access network equipment is used as an example to describe. It should be noted that the method provided in this application can not only be applied to the interaction between terminal equipment and the network side, but also can be applied to In the interaction between any two devices, this application does not limit it.
  • FIG. 1 is a schematic structural diagram of a communication system to which the present application can be applied, and the communication system includes access network equipment and terminal equipment.
  • the terminal device can establish a connection with the access network device and communicate with the access network device.
  • Fig. 1 is only a schematic diagram, and the present application does not limit the number of access network devices and terminal devices included in the communication system.
  • Access network equipment and terminal equipment can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed on aircraft, balloons and satellites in the air.
  • the embodiments of the present application do not limit the application scenarios of the access network device and the terminal device.
  • the embodiments of the present application may be applicable to downlink signal transmission, uplink signal transmission, or device-to-device (device to device, D2D) signal transmission.
  • the sending device is an access network device
  • the corresponding receiving device is a terminal device.
  • the sending device is a terminal device
  • the corresponding receiving device is an access network device.
  • the sending device is a terminal device
  • the corresponding receiving device is also a terminal device.
  • the transmission direction of the signal in the embodiments of the present application is not limited.
  • the communication between the access network device and the terminal device and between the terminal device and the terminal device can be carried out through the licensed spectrum (licensed spectrum), or through the unlicensed spectrum (unlicensed spectrum), or through the licensed spectrum and the unlicensed spectrum at the same time. spectrum for communication.
  • the communication between the access network device and the terminal device and between the terminal device and the terminal device can be carried out through the frequency spectrum below 6G, the frequency spectrum above 6G can also be used for communication, and the frequency spectrum below 6G and the frequency spectrum above 6G can also be used at the same time. communication.
  • the embodiments of the present application do not limit the frequency spectrum resources used between the access network device and the terminal device.
  • Primary cell and secondary cell Terminal devices can establish connections with multiple cells, which are divided into two groups: primary cell group (master cell group, MCG) and secondary cell group (secondary cell group, SCG).
  • MCG master cell group
  • SCG secondary cell group
  • the MCG includes a primary cell, and may also include one or more secondary cells; similarly, the SCG includes a primary cell, and may also include one or more secondary cells. If not specified, the primary cell may refer to the primary cell of the MCG or the primary cell of the SCG.
  • Span can be translated as "time span", “time unit”, “sub-time unit”, etc., and is a group of continuous orthogonal frequency-division multiplexing (OFDM) symbols in a time slot.
  • Any PDCCH supported by the terminal device is included in a certain span at a monitoring occasion.
  • the start symbol of a span is the start symbol of a PDCCH monitoring opportunity
  • the end symbol is the end of a PDCCH monitoring time
  • the maximum number of symbols in a span is Y. If a terminal device uses a combination (X, Y) to monitor PDCCH on a cell, the minimum interval between the start symbols of two consecutive spans is X symbols, and these two consecutive spans can be within the same time slot , or between time slots.
  • Subcarrier spacing there are 5 subcarrier spacings in the NR system
  • the configuration parameter ⁇ of the subcarrier spacing takes a value from 0 to 4
  • the corresponding subcarrier spacing is 15KHz, 30KHz, 60KHz, 120KHz and 240KHz.
  • a cell is described from the perspective of resource management or mobility management by high layers (such as radio resource control layer, media access control layer and other protocol layers above the physical layer).
  • the coverage area of each network device can be divided into one or more cells.
  • one cell may be configured with one downlink carrier, and optionally at least one uplink carrier.
  • a cell is a common name, and for a terminal device, a cell that provides services for it is called a serving cell.
  • the cell involved in this application may also be a serving cell.
  • Cross-carrier scheduling The data on one cell is scheduled using the PDCCH on this cell, which is called self-scheduling; the data on one cell is scheduled on the PDCCH on another cell, which is called cross-carrier scheduling.
  • the cell carrying the PDCCH is called the scheduling cell or the scheduling cell, and the cell carrying the data is called the scheduled cell.
  • a terminal device will monitor a group of PDCCH candidates (candidates) on the downlink active bandwidth part (bandwidth part, BWP) configured with PDCCH.
  • Monitoring refers to performing PDCCH decoding on each PDCCH candidate according to a downlink control information (downlink control information, DCI) format (format) to be detected.
  • the access network device may or may not send the PDCCH in a PDCCH candidate, so the terminal device may detect (detect) the PDCCH or may not detect the PDCCH as a result of monitoring.
  • L is called the aggregation level (aggregation level, AL) of the PDCCH.
  • a CCE contains 6 resource element groups (resource-element group, REG), each REG corresponds to a resource block (resource block) on an orthogonal frequency-division multiplexing (OFDM) symbol (symbol) , RB).
  • OFDM symbols may be referred to as symbols for short.
  • a search space (search space) with an AL of L is defined as a set of PDCCH candidates with a size of L control channel elements.
  • a search space set (search space set) is a set of search spaces that contain different ALs.
  • a search space set is associated with a control resource set (CORESET).
  • the protocol presets the upper limit of the number of PDCCH candidates and the number of non-overlapping CCEs monitored by the terminal equipment in one time unit of one cell, that is, the upper limit of BD/CCE.
  • the time unit here may refer to a time slot (slot), or may refer to a time span (span).
  • the access network device will configure the PDCCH monitoring capability configuration (PDCCHMonitoringCapabilityConfig) for each serving cell of the terminal device.
  • This parameter can have two values, that is, the 3rd generation partnership project (3GPP) version 15 (release 15 R15 PDCCH monitoring capability (R15 PDCCH monitoring capability) defined in R15) and R16 PDCCH monitoring capability (R16 PDCCH monitoring capability) defined in 3GPP R16.
  • 3GPP 3rd generation partnership project
  • PDCCHMonitoringCapabilityConfig of a serving cell R15 PDCCH monitoring capability, or PDCCHMonitoringCapabilityConfig is not configured, when the subcarrier spacing configuration parameter of BWP of a serving cell is ⁇ 0,1,2,3 ⁇ , each slot terminal
  • the maximum number of PDCCH candidates that the device monitors on this serving cell is The maximum number of non-overlapping CCEs in the monitored PDCCH candidates is For details, please refer to Table 1 and Table 2.
  • Table 1 maximum number of monitored PDCCH candidates per slot for a BWP with SCS configuration ⁇ 0,1,2,3 ⁇ for a single serving cell
  • Table 2 maximum number of non-overlapped CCEs per slot for a BWP with SCS configuration ⁇ 0,1,2,3 ⁇ for a single serving cell
  • the maximum number of PDCCH candidates that the terminal equipment can monitor on this serving cell in each time span is The maximum number of non-overlapping CCEs in the monitored PDCCH candidates is For details, please refer to Table 3 and Table 4.
  • Table 3 maximum number of monitored PDCCH candidates in a span for combination(X,Y)for a BWP with SCS configuration ⁇ 0,1 ⁇ for a single serving cell
  • Table 4 maximum number of non-overlapped CCEs in a span for combination(X,Y) for a BWP with SCS configuration ⁇ 0,1 ⁇ for a single serving cell
  • Tables 1 to 4 above specify the upper limit of the number of PDCCH candidates and the upper limit of the number of non-overlapping CCEs monitored by the terminal device in one time unit of a cell, but the actual detection capability of the terminal device may be smaller than that in the above table specified quantity.
  • the terminal device may respectively determine the upper limit of the number of PDCCH candidates and the upper limit of the number of non-overlapping CCEs that actually need to be monitored in one time unit of one cell.
  • the blind detection capability of the UE is characterized by the number of cells.
  • the terminal device can report the blind detection capability supporting 4 cells, or report the blind detection capability supporting 6 cells.
  • span in R16 that is, after the introduction of monitoringCapabilityConfig-r16
  • terminal devices will report the slot-based and span-based blind detection capabilities separately. For example, a terminal device may report that it supports M slot-based blind detection capabilities, and supports N span-based blind detection capabilities.
  • the terminal device needs to monitor no more than A PDCCH candidate also needs to monitor no more than non-overlapping CCEs.
  • the terminal device needs to monitor no more than PDCCH candidates also need to monitor no more than non-overlapping CCEs.
  • ⁇ is a parameter configured by the base station, and its value can be 1 or 2.
  • the terminal equipment needs to monitor the CORESET with the same CORESETPoolIndex value not exceeding PDCCH candidates also need to monitor no more than non-overlapping CCEs.
  • the UE capability refers to the number of cells that the terminal device supports blind detection. In the following formula, if "UE capability" appears, it also expresses the same meaning. ⁇ When the scheduling cell is not configured with two CORESETPoolIndex, for each scheduled cell, the terminal equipment needs to monitor the PDCCH candidates also need to monitor no more than non-overlapping CCEs.
  • ⁇ is a parameter configured by the base station, and its value can be 1 or 2.
  • the terminal device needs to monitor the CORESET with the same CORESETPoolIndex value not exceeding PDCCH candidates also need to monitor no more than non-overlapping CCEs.
  • the combination (X, Y) to perform PDCCH monitoring and activate the downlink On the scheduling cell where the subcarrier spacing of the BWP is ⁇ .
  • the terminal equipment needs to monitor no more than PDCCH candidates also need to monitor no more than non-overlapping CCEs.
  • terminal devices need to monitor no more than PDCCH candidates also need to monitor no more than non-overlapping CCEs.
  • any span pair in each X symbol is within Y symbols, where the first X The start symbol of a symbol is within a PDCCH monitoring opportunity, the start symbol of the next X symbol is within a PDCCH monitoring opportunity, and does not belong to the first X symbols, then this span group is all spans in each X symbol composed of span groups.
  • this span group is any span group composed of at most one span in all scheduling cells using the combination (X, Y) for PDCCH monitoring and activating downlink BWP with a subcarrier spacing of ⁇ .
  • the terminal device needs to monitor no more than PDCCH candidates also need to monitor no more than non-overlapping CCEs.
  • Scenario 1 to Scenario 4 above describe how to determine the upper limit of the number of PDCCH candidates and the number of non-overlapping CCEs monitored in a time unit of the scheduling cell when a scheduled cell can only have one scheduling cell upper limit. But if two cells can jointly schedule one of these two cells, for example, when the first cell and the second cell jointly schedule the first cell, how to determine the upper limit and the number of PDCCH candidates monitored in one time unit?
  • the upper limit of the number of overlapping CCEs is an urgent problem to be solved. This application will provide a method to solve the above problems.
  • the network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application.
  • the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.
  • FIG. 2 it is a schematic flowchart of a communication method provided by the embodiment of the present application.
  • the method includes:
  • S201 The terminal device determines first indication information.
  • S202 The terminal device sends the first indication information to the access network device.
  • S203 The access network device receives first indication information from the terminal device.
  • the first indication information is used to indicate one or two schemes supported by the terminal device from the first scheme and the second scheme. Both the first scheme and the second scheme are used to determine the maximum number of PDCCH candidates to be monitored by the terminal device and non-overlapping CCEs among the PDCCH candidates to be monitored when the first cell and the second cell jointly schedule the first cell At least one item of the maximum value of the number of .
  • the first solution or the second solution may be used to determine the maximum number of PDCCH candidates to be monitored by the terminal device and the PDCCH to be monitored on the second cell in the time unit corresponding to the second subcarrier interval. At least one item of the maximum number of non-overlapping CCEs among the candidates.
  • the subcarrier spacing of the first cell is equal to the first subcarrier spacing
  • the subcarrier spacing of the second cell is equal to the second subcarrier spacing
  • the first subcarrier spacing may not be equal to the second subcarrier spacing, for example, the first The subcarrier spacing may be smaller than the second subcarrier spacing, for example, the first subcarrier spacing is 15KHz, and the second subcarrier spacing is 30KHz.
  • a time unit may refer to a time slot or a span.
  • the first cell and the second cell are not limited, for example, the first cell is the primary cell, and the second cell is the secondary cell.
  • the first scheme may include at least one of the following:
  • the first parameter and the second parameter are preset, for example, the preset value of the first parameter is 1, and the preset value of the second parameter is 0;
  • the adjusted cells include the first cell, The adjusted cells do not include the first cell; or A scheduling cell includes the first cell, A scheduling cell does not include the second cell as the scheduling cell of the first cell, that is, the second cell is not the scheduling cell of the first cell Count in.
  • ⁇ 1 is the configuration parameter corresponding to the subcarrier spacing of the first cell, that is, the configuration parameter corresponding to the first subcarrier spacing
  • ⁇ 2 is the configuration parameter corresponding to the subcarrier spacing of the second cell, that is, the configuration corresponding to the second subcarrier spacing Parameters, containing can represent the count as 1, not containing can represent the count as 0;
  • the terminal device determines the first total quantity, the first total quantity is all scheduling cells whose subcarrier spacing in the activated downlink bandwidth part is the first subcarrier spacing in a time unit corresponding to the first subcarrier spacing above, the number of physical downlink control channel candidates that the terminal equipment needs to monitor, and the maximum value of the sum of the number of physical downlink control channel candidates that the terminal equipment needs to monitor to schedule the first cell in the second cell;
  • the terminal device determines the third total number, the third total number refers to all scheduled subcarrier intervals in the active downlink bandwidth part of the first subcarrier interval in a time unit corresponding to the first subcarrier interval On the cell, the number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal device needs to monitor, and on the second cell, the number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal device needs to monitor for scheduling the first cell The maximum value of the sum of the number of control channel elements;
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of PDCCH candidates to be monitored for scheduling the first cell is determined according to the first number,
  • the first number is a preset maximum value of the number of PDCCH candidates to be monitored in a time unit corresponding to the second subcarrier interval.
  • the maximum number of PDCCH candidates to be monitored by the terminal device for scheduling the first cell in a time unit corresponding to the second subcarrier interval may be the first number; or , the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of PDCCH candidates to be monitored for scheduling the first cell may be greater than the first number or not according to the first The number is determined; in addition, when the terminal device is on the second cell, in a time unit corresponding to the second subcarrier interval, the maximum number of PDCCH candidates to be monitored for scheduling the first cell may not be based on the second total The quantity is determined.
  • the first number may be the value corresponding to ⁇ 2 in Table 1 For example, ⁇ 2 is 1, then the first number is 36.
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored is determined according to the second number, and the second The number is a preset maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored in the time unit corresponding to the second subcarrier interval.
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored may be the second number; or, the terminal The device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored may be greater than the second number; or, the terminal device is in the second cell Above, in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping control channel elements in the physical downlink control channel candidates to be monitored is not determined according to the second number; in addition, the terminal device is in the second On the cell, in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored may not be determined according to the fourth total number.
  • the second number may be the value corresponding to ⁇ 2 in Table 2 For example, ⁇ 2 is 1, then the second number is 56.
  • all the search spaces on the second cell used to schedule the first cell are configured within 3 consecutive symbols of a time unit corresponding to the first subcarrier interval; that is, all the search spaces used to schedule the first cell
  • the PDCCH candidates to be monitored on the second cell are configured within 3 consecutive symbols of one time unit of the first cell.
  • the 3 symbols here are 3 OFDM symbols corresponding to the 3 first subcarrier intervals.
  • all the search spaces on the first cell and the second cell used to schedule the first cell are configured within 3 consecutive symbols of a time unit corresponding to the first subcarrier interval; that is, all the search spaces used to Scheduling PDCCH candidates to be monitored on the first cell and the second cell of the first cell, within 3 consecutive symbols of one time unit of the first cell.
  • the 3 symbols here are 3 OFDM symbols corresponding to the 3 first subcarrier intervals.
  • all search spaces on the second cell used to schedule the first cell are configured within 3 consecutive symbols of one time unit corresponding to the second subcarrier interval. That is to say, all the PDCCH candidates to be monitored on the second cell used to schedule the first cell are within 3 consecutive symbols of one time unit of the second cell.
  • the 3 symbols here are 3 OFDM symbols corresponding to the 3 second subcarrier intervals.
  • the access network device may also send fourth indication information to the terminal device, where the fourth indication information is used to indicate whether the first solution includes one or more of conditions 1-6 to 1-9.
  • the second scheme may include at least one of the following:
  • the first parameter and the second parameter are allowed to be configured by the access network device, or the first parameter and the second parameter are preset by a protocol.
  • the access network device may configure at least one of the first parameter and the second parameter through radio resource control (radio resource control, RRC) signaling value of .
  • radio resource control radio resource control
  • the access network device may indicate to the terminal device the value of the first parameter and the value of the second parameter through the third indication information. at least one.
  • the value of the first parameter or the second parameter may be a default value. In another implementation manner, there is no corresponding default value for the value of the first parameter or the second parameter, and the value of the first parameter or the second parameter is configured by the access network device. If the access network device only indicates one of them, the protocol presets the sum of the two, for example, 1.
  • the access network device may configure the value of the first parameter to be equal to the value of the third parameter, or configure the first parameter and the third parameter as the same parameter.
  • the first parameter is represented by s1
  • the second parameter is represented by s2
  • the third parameter is represented by ⁇ .
  • s1 may be equal to ⁇
  • s2 may be equal to 1- ⁇ .
  • the first parameter preset in the second scheme is different from the first parameter preset in the first scheme, and/or the second parameter preset in the second scheme
  • the parameter is different from the second parameter preset in the first solution.
  • the preset first parameter is 1, and the preset second parameter is 0; in the second scheme, the preset first parameter is 1, and the preset second parameter is 1, or the second scheme
  • the preset first parameter in is 0.5, and the preset second parameter is 0.5.
  • the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, the maximum number of PDCCH candidates to be monitored for scheduling the first cell is based on the first number and the second
  • the second total quantity is determined, for example, it may be the minimum value of the first quantity and the second total quantity;
  • the terminal device when the time unit is a time slot, if the configuration parameter of the second sub-carrier interval is ⁇ 2, the terminal device is on the second cell, and in a time unit corresponding to the second sub-carrier interval, what needs to be monitored is used for scheduling
  • the maximum number of PDCCH candidates of the first cell is Among them, the first quantity is The second total amount is min() is the minimum value operation.
  • the terminal device is on the second cell, in a time unit corresponding to the second subcarrier interval, the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored is based on the second number and the fourth total
  • the quantity determination may be, for example, the minimum value of the second quantity and the fourth total quantity.
  • the terminal device when the time unit is a time slot, if the configuration parameter of the second subcarrier interval is ⁇ 2, the terminal device is on the second cell, and in a time unit corresponding to the second subcarrier interval, among the PDCCH candidates to be monitored
  • the maximum number of non-overlapping CCEs is where the second quantity is The fourth total quantity is
  • the first parameter and the second parameter in the first scheme and the second scheme can be used to determine the first total quantity, the third total quantity, the second total quantity and the fourth total quantity, and the specific determination process will be later A detailed description.
  • S204 The access network device sends second indication information to the terminal device, where the second indication information is used to indicate that the first scheme or the second scheme is adopted.
  • the access network device may indicate one of the schemes through the second indication information, so that the terminal device determines which one is finally adopted. plan.
  • the access network device may not send the second indication information, and the terminal device and the access network device adopt one of the schemes by default.
  • the scheme can be stipulated in the agreement or agreed in other ways.
  • the access network device may indicate that the scheme is adopted through the second indication information, or the access network device may not send In the second indication information, the terminal device and the access network device adopt a solution supported by the terminal device by default.
  • the access network device respectively determines configurations of search space sets of the first cell and the second cell according to the first scheme or the second scheme.
  • the access network device may determine at least one of the maximum number of PDCCH candidates to be monitored by the terminal device and the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored according to the first scheme or the second scheme, Therefore, the corresponding search space set can be configured with the maximum number of PDCCH candidates to be monitored by the terminal device and/or the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored.
  • the specific configuration process is not described in this application. limited and will not be repeated here.
  • the access network device may also send configuration information to the terminal device, where the configuration information is used to indicate the configuration of the search space sets of the first cell and the second cell.
  • S206 The access network device sends third indication information to the terminal device.
  • the third indication information may also be used to indicate the value of the third parameter.
  • the third indication information is used to indicate at least one of the value of the first parameter and the value of the second parameter in the second solution.
  • the access network device only indicates one value, and this value is not only the value of the first parameter, but also the value of the third parameter.
  • Implementation mode 2 The access network device independently configures the value of the first parameter and the value of the third parameter.
  • Implementation mode 2 The access network device independently configures the value of the first parameter, the value of the second parameter, and the value of the third parameter.
  • the terminal device determines at least one of the maximum number of PDCCH candidates to be monitored and the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored.
  • the terminal device may determine the maximum number of PDCCH candidates to be monitored according to the scheme indicated by the second indication information And at least one item of the maximum number of non-overlapping CCEs in the PDCCH candidates needs to be monitored. If the terminal device does not receive the second indication information, the terminal device may determine the maximum number of PDCCH candidates to be monitored and the number of non-overlapping CCEs among the PDCCH candidates to be monitored according to the first scheme and the default scheme in the second scheme at least one of the maximum values of the numbers.
  • the first scheme or the second scheme is used to determine the number of PDCCH candidates that the terminal equipment needs to monitor in a time unit corresponding to the second subcarrier interval on the second cell At least one of the maximum value and the maximum value of the number of non-overlapping CCEs in the PDCCH candidates to be monitored.
  • the terminal device also needs to determine on the first cell, in a time unit corresponding to the first subcarrier interval, the maximum number of PDCCH candidates that need to be monitored for scheduling the first cell and the number of PDCCH candidates that need to be monitored for scheduling the first subcarrier. At least one item of the maximum number of non-overlapping CCEs among the PDCCH candidates of the cell.
  • the terminal device also needs to determine the maximum number of PDCCH candidates that need to be monitored for scheduling the first cell and the number of PDCCH candidates that need to be monitored for scheduling the first subcarrier in a time unit corresponding to the first subcarrier interval on the second cell. At least one item of the maximum number of non-overlapping CCEs among the PDCCH candidates of the cell will be described respectively below.
  • the following parameters involved in this application can be expressed as:
  • the first quantity can be expressed as The second quantity can be expressed as
  • the third quantity can be expressed as The fourth quantity can be expressed as
  • the first total quantity can be expressed as The third total quantity can be expressed as
  • the second total quantity can be expressed as
  • the fourth total quantity can be expressed as
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of PDCCH candidates to be monitored for scheduling the first cell is the third number and The minimum value in the first total quantity is multiplied by a third parameter, and the third quantity is a preset maximum value of the number of PDCCH candidates to be monitored in a time unit corresponding to the first subcarrier interval.
  • the third quantity may be corresponding to ⁇ 1 in Table 1
  • ⁇ 1 is 1, then the third number is 36.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell satisfies the following form:
  • ⁇ is the third parameter, and min() is the minimum value operation.
  • the maximum number of non-overlapping CCEs among the PDCCH candidates to be monitored by the terminal device in the first cell in a time unit corresponding to the first subcarrier interval is the fourth number and the second The minimum value of the total number is multiplied by the third parameter, and the fourth number is a preset maximum value of the number of non-overlapping CCEs among the PDCCH candidates to be monitored in the time unit corresponding to the first subcarrier interval.
  • the fourth quantity may correspond to ⁇ 1 in Table 2. For example, ⁇ 1 is 1, then the fourth quantity is 56.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell satisfies the following form:
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of PDCCH candidates to be monitored for scheduling the first cell is the third number multiplied by Take the third parameter.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell satisfies the following form:
  • the terminal device is on the first cell, and in a time unit corresponding to the first subcarrier interval, the maximum number of non-overlapping CCEs in the PDCCH candidates to be monitored is the fourth number multiplied by the first Three parameters.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell satisfies the following form:
  • Case 2 is also divided into two instances:
  • Example 1 if the first solution is adopted: on the second cell, in a time unit corresponding to the second subcarrier interval, the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell is the first A number; or, the maximum number of PDCCH candidates that the terminal device needs to monitor for scheduling the first cell may be greater than the first number or have no upper limit.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell is For example, ⁇ 2 is 1, then the first number is 36.
  • the maximum number of PDCCH candidates that the terminal equipment needs to monitor to schedule the first cell may be greater than This maximum value may not be based on Sure.
  • the maximum number of non-overlapping CCEs in the PDCCH candidates that the terminal device needs to monitor is the second number; or, the maximum number of non-overlapping CCEs in the PDCCH candidates that the terminal device needs to monitor may be greater than the second number or there is no upper limit.
  • the maximum number of non-overlapping CCEs in the PDCCH candidates that the terminal device needs to monitor is For example, ⁇ 2 is 1, then the second number is 56.
  • the maximum value can be greater than This maximum value can also be independent of the Sure.
  • Example 1 if the second solution is adopted: on the second cell, in a time unit corresponding to the second subcarrier interval, the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell is the first The minimum of the first quantity and the second total quantity.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell is
  • the maximum number of non-overlapping CCEs among the PDCCH candidates for scheduling the first cell that the terminal device needs to monitor is the minimum value of the second number and the fourth total number.
  • the maximum number of non-overlapping CCEs in the PDCCH candidates that the terminal device needs to monitor is
  • Example 2 if the first solution is adopted, on the second cell, in a time unit corresponding to the first subcarrier interval, the maximum number of PDCCH candidates that the terminal device needs to monitor for scheduling the first cell is the second The minimum of the three quantities and the first total quantity multiplied by 1 and the difference of the third parameter.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell satisfies the following form:
  • the maximum number of non-overlapping CCEs among the PDCCH candidates for scheduling the first cell that the terminal device needs to monitor is the difference between the fourth number and the second total number multiplied by 1 and the third parameter.
  • the maximum number of non-overlapping CCEs in the PDCCH candidates that the terminal device needs to monitor satisfies the following form:
  • Example 2 if the second solution is adopted, on the second cell, in a time unit corresponding to the first subcarrier interval, the maximum number of PDCCH candidates that the terminal device needs to monitor for scheduling the first cell is the first Three quantities multiplied by 1 and the difference of the third argument.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor to schedule the first cell satisfies the following form:
  • the maximum number of non-overlapping CCEs among the PDCCH candidates for scheduling the first cell that the terminal device needs to monitor is the difference between the fourth number multiplied by 1 and the third parameter.
  • the maximum number of non-overlapping CCEs in the PDCCH candidates that the terminal device needs to monitor satisfies the following form:
  • the terminal device When ⁇ 1 ⁇ 2, because the time slot corresponding to the first subcarrier interval is greater than the time slot corresponding to the second subcarrier interval, on the second cell, in a time unit corresponding to the second subcarrier interval, the terminal device
  • the maximum number of PDCCH candidates that need to be monitored for scheduling the first cell can be
  • the maximum number of non-overlapping CCEs in the PDCCH candidates that the terminal equipment needs to monitor may satisfy the following form:
  • the network device can also use the same method as the terminal device to determine the maximum number of PDCCH candidates that the terminal device needs to monitor under different circumstances, and the maximum number of non-overlapping CCEs among the PDCCH candidates that need to be monitored, so as to determine The corresponding search space configurations of the first cell and the second cell.
  • the first parameter and the second parameter in the first scheme and the second scheme can be used to determine the first total quantity, the third total quantity, the second total quantity and the fourth total quantity, respectively below Describe how the above quantities were determined.
  • the first total quantity, the third total quantity, the second total quantity and the fourth total quantity determined by using the first parameter and the second parameter in the first scheme can satisfy the description in the first method, or can satisfy The description in Method 2; the first total quantity, the third total quantity, the second total quantity and the fourth total quantity determined by the first parameter and the second parameter in the second scheme can satisfy the description in Method 1, or The description in Method 2 can be satisfied.
  • the "scheduling cell” in methods 1 to 4 described below refers to a cell that schedules its own cell or a cell that schedules other cells among the cells accessed by the terminal device.
  • the first total number refers to the number of PDCCH candidates that the terminal device needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval , and on the second cell, the maximum value of the sum of the numbers of the PDCCH candidates for scheduling the first cell that the terminal equipment needs to monitor; the third total number refers to a time unit corresponding to the first subcarrier interval.
  • the number of non-overlapping CCEs in the PDCCH candidates that the terminal equipment needs to monitor On all scheduling cells where the subcarrier spacing of the downlink bandwidth is the first subcarrier spacing, the number of non-overlapping CCEs in the PDCCH candidates that the terminal equipment needs to monitor, and on the second cell, the scheduling first that the terminal equipment needs to monitor
  • the maximum value of the sum of the numbers of non-overlapping CCEs among the PDCCH candidates of the cell is the third total number.
  • the time unit is a time slot
  • the configuration parameter of the first subcarrier interval is ⁇ 1
  • the number of cells corresponding to all subcarrier intervals in the formula includes the number of cells corresponding to ⁇ 1 and the number of cells corresponding to ⁇ 2.
  • the number of cells corresponding to ⁇ 1 can be regarded as the number of scheduled cells whose subcarrier spacing of the scheduling cell corresponds to ⁇ 1.
  • the first cell count is the first parameter
  • the first cell count is the second parameter.
  • the number of cells corresponding to ⁇ 1 can also be considered as the number of scheduling cells whose subcarrier spacing corresponds to ⁇ 1.
  • the count of the first cell is the first parameter, or the first
  • the counting of a cell as its own scheduling cell is the first parameter; in the number of cells corresponding to ⁇ 2, the counting of the second cell as the scheduling cell for scheduling the first cell is the second parameter.
  • the counting of the second cell as a scheduling cell for scheduling the first cell is the second parameter, which means that the second cell, as a scheduling cell for self-scheduling or scheduling other cells, will perform other counts.
  • the UE capability indicates the number of cells that the terminal equipment can support simultaneous blind detection, which can be reported in the form of parameters such as pdcch-BlindDetectionCA.
  • the time unit is a time slot
  • the configuration parameter of the first subcarrier interval is ⁇ 1
  • the number of cells corresponding to all subcarrier intervals in the formula includes the number of cells corresponding to ⁇ 1 and the number of cells corresponding to ⁇ 2.
  • the number of cells corresponding to ⁇ 1 can be regarded as the number of scheduled cells whose subcarrier spacing of the scheduling cell corresponds to ⁇ 1.
  • the first cell count is the first parameter
  • the first cell count is the second parameter.
  • the number of cells corresponding to ⁇ 1 can also be considered as the number of scheduling cells whose subcarrier spacing corresponds to ⁇ 1.
  • the count of the first cell is the first parameter, or the first
  • the counting of a cell as its own scheduling cell is the first parameter; in the number of cells corresponding to ⁇ 2, the counting of the second cell as the scheduling cell for scheduling the first cell is the second parameter.
  • the counting of the second cell as a scheduling cell for scheduling the first cell is the second parameter, which means that the second cell, as a scheduling cell for self-scheduling or scheduling other cells, will perform other counts.
  • the UE capability indicates the number of cells that the terminal equipment can support simultaneous blind detection, which can be reported in the form of parameters such as pdcch-BlindDetectionCA.
  • the first total number refers to the number of PDCCH candidates that the terminal device needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval
  • the third total number refers to the PDCCH that the terminal device needs to monitor on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the first subcarrier spacing in a time unit corresponding to the first subcarrier spacing.
  • the time unit is a time slot
  • the configuration parameter of the first subcarrier interval is ⁇ 1
  • the number of cells corresponding to all subcarrier intervals in the formula includes the number of cells corresponding to ⁇ 1 and the number of cells corresponding to ⁇ 2.
  • the number of cells corresponding to ⁇ 1 can be regarded as the number of scheduled cells whose subcarrier spacing of the scheduling cell corresponds to ⁇ 1.
  • the first cell count is the first parameter
  • the first cell count is the second parameter.
  • the number of cells corresponding to ⁇ 1 can also be considered as the number of scheduling cells whose subcarrier spacing corresponds to ⁇ 1.
  • the count of the first cell is the first parameter, or the first
  • the counting of a cell as its own scheduling cell is the first parameter; in the number of cells corresponding to ⁇ 2, the counting of the second cell as the scheduling cell for scheduling the first cell is the second parameter.
  • the counting of the second cell as a scheduling cell for scheduling the first cell is the second parameter, which means that the second cell, as a scheduling cell for self-scheduling or scheduling other cells, will perform other counts.
  • the UE capability indicates the number of cells that the terminal equipment can support simultaneous blind detection, which can be reported in the form of parameters such as pdcch-BlindDetectionCA.
  • the time unit is a time slot
  • the configuration parameter of the first subcarrier interval is ⁇ 1
  • the number of cells corresponding to all subcarrier intervals in the formula includes the number of cells corresponding to ⁇ 1 and the number of cells corresponding to ⁇ 2.
  • the number of cells corresponding to ⁇ 1 can be regarded as the number of scheduled cells whose subcarrier spacing of the scheduling cell corresponds to ⁇ 1.
  • the first cell count is the first parameter
  • the first cell count is the second parameter.
  • the number of cells corresponding to ⁇ 1 can also be considered as the number of scheduling cells whose subcarrier spacing corresponds to ⁇ 1.
  • the count of the first cell is the first parameter, or the first
  • the counting of a cell as its own scheduling cell is the first parameter; in the number of cells corresponding to ⁇ 2, the counting of the second cell as the scheduling cell for scheduling the first cell is the second parameter.
  • the counting of the second cell as a scheduling cell for scheduling the first cell is the second parameter, which means that the second cell, as a scheduling cell for self-scheduling or scheduling other cells, will perform other counts.
  • the UE capability indicates the number of cells that the terminal equipment can support simultaneous blind detection, which can be reported in the form of parameters such as pdcch-BlindDetectionCA.
  • the first subcarrier spacing includes the first cell
  • the other 5 cells are self-scheduling cells
  • the cell is a self-scheduling cell
  • the second cell is also a self-scheduling cell.
  • the first subcarrier spacing corresponds to ⁇ 1
  • the second subcarrier spacing corresponds to ⁇ 2.
  • 1 represents s1, which means that in the count of the adjusted cell whose subcarrier spacing is ⁇ 1 in the scheduling cell, the first cell count is 1, or means that in the counting of the scheduling cell whose subcarrier spacing is ⁇ 1 in the scheduling cell, the first The cell count is 1.
  • 0 represents s2, which means that in the counting of the adjusted cell whose subcarrier spacing is ⁇ 2 in the scheduling cell, the first cell count is 0, or means that in the counting of the scheduling cell whose subcarrier spacing is ⁇ 2, the second The cell count is 0, more specifically, the count is 0 when the second cell is the scheduling cell of the first cell.
  • the number of cells corresponding to all subcarrier intervals is C, including C1 cells with the first subcarrier interval, the C1 cells with the first subcarrier interval include the first cell, and other cells are self-scheduled Cells; the number of cells corresponding to all subcarrier intervals is C and also includes C2 cells with second subcarrier intervals, C2 cells with second subcarrier intervals include the second cell, other cells are self-scheduling cells, and the second The cell is also a self-scheduling cell.
  • the first subcarrier spacing corresponds to ⁇ 1
  • the second subcarrier spacing corresponds to ⁇ 2.
  • the number of cells corresponding to all subcarrier intervals is C1+C2.
  • the number of cells corresponding to ⁇ 1 is (C1-1)+s1, that is, the number of cells corresponding to the first subcarrier spacing is (C1-1)+s1.
  • s1 means that among the counts of the adjusted cells whose subcarrier spacing is ⁇ 1 in the scheduling cell, the first cell count is s1, or means that among the scheduling cell counts where the subcarrier spacing of the scheduling cell is ⁇ 1, the first cell count is s1.
  • the second total quantity and the fourth total quantity corresponding to the first solution meet any of the following items
  • the second total quantity and the fourth total quantity corresponding to the second solution meet any of the following items. That is to say, the second total quantity and the fourth total quantity determined by the first parameter and the second parameter in the first scheme can satisfy the description in mode three, or can meet the description in mode four; adopt the second scheme The second total quantity and the fourth total quantity determined by the first parameter and the second parameter in can satisfy the description in mode three, or can meet the description in mode four.
  • the second total quantity refers to that in a time unit corresponding to the second subcarrier interval, except on the second cell, the terminal equipment needs to monitor the PDCCH candidate for scheduling the first cell, the subcarrier interval in the active downlink bandwidth part is On all scheduling cells of the second subcarrier interval, the maximum number of PDCCH candidates that the terminal device needs to monitor;
  • the fourth total number refers to a time unit corresponding to the second subcarrier interval, divided by the second cell , except for non-overlapping CCEs in the PDCCH candidates of the scheduling first cell that the terminal equipment needs to monitor, on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the second subcarrier spacing, there are no PDCCH candidates that the terminal equipment needs to monitor
  • the maximum number of overlapping CCEs refers to that in a time unit corresponding to the second subcarrier interval, except on the second cell, the terminal equipment needs to monitor the PDCCH candidate for scheduling the first cell, the terminal equipment needs to monitor.
  • the time unit is a time slot
  • the configuration parameter of the second subcarrier spacing is ⁇ 2
  • the number of cells corresponding to all subcarrier intervals in the formula includes the number of cells corresponding to ⁇ 1 and the number of cells corresponding to ⁇ 2.
  • the number of cells corresponding to ⁇ 1 can be regarded as the number of scheduled cells whose subcarrier spacing of the scheduling cell corresponds to ⁇ 1.
  • the first cell count is the first parameter
  • the first cell count is the second parameter.
  • the number of cells corresponding to ⁇ 1 can also be considered as the number of scheduling cells whose subcarrier spacing corresponds to ⁇ 1.
  • the count of the first cell is the first parameter, or the first
  • the counting of a cell as its own scheduling cell is the first parameter; in the number of cells corresponding to ⁇ 2, the counting of the second cell as the scheduling cell for scheduling the first cell is the second parameter.
  • the counting of the second cell as a scheduling cell for scheduling the first cell is the second parameter, which means that the second cell, as a scheduling cell for self-scheduling or scheduling other cells, will perform other counts.
  • the UE capability indicates the number of cells that the terminal equipment can support simultaneous blind detection, which can be reported in the form of parameters such as pdcch-BlindDetectionCA.
  • the time unit is a time slot
  • the configuration parameter of the second subcarrier spacing is ⁇ 2
  • the number of cells corresponding to all subcarrier intervals in the formula includes the number of cells corresponding to ⁇ 1 and the number of cells corresponding to ⁇ 2.
  • the number of cells corresponding to ⁇ 1 can be regarded as the number of scheduled cells whose subcarrier spacing of the scheduling cell corresponds to ⁇ 1.
  • the first cell count is the first parameter
  • the first cell count is the second parameter.
  • the number of cells corresponding to ⁇ 1 can also be considered as the number of scheduling cells whose subcarrier spacing corresponds to ⁇ 1.
  • the count of the first cell is the first parameter, or the first
  • the counting of a cell as its own scheduling cell is the first parameter; in the number of cells corresponding to ⁇ 2, the counting of the second cell as the scheduling cell for scheduling the first cell is the second parameter.
  • the counting of the second cell as a scheduling cell for scheduling the first cell is the second parameter, which means that the second cell, as a scheduling cell for self-scheduling or scheduling other cells, will perform other counts.
  • the UE capability indicates the number of cells that the terminal equipment can support simultaneous blind detection, which can be reported in the form of parameters such as pdcch-BlindDetectionCA.
  • the second total number refers to the number of PDCCH candidates that the terminal device needs to monitor in a time unit corresponding to the second subcarrier interval, on all scheduling cells whose subcarrier interval of the activated downlink bandwidth part is the second subcarrier interval
  • the maximum value; the fourth total number refers to the PDCCH that the terminal device needs to monitor in a time unit corresponding to the second subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the second subcarrier interval
  • the time unit is a time slot
  • the configuration parameter of the second subcarrier spacing is ⁇ 2
  • the number of cells corresponding to all subcarrier intervals in the formula includes the number of cells corresponding to ⁇ 1 and the number of cells corresponding to ⁇ 2.
  • the number of cells corresponding to ⁇ 1 can be regarded as the number of scheduled cells whose subcarrier spacing of the scheduling cell corresponds to ⁇ 1.
  • the first cell count is the first parameter
  • the first cell count is the second parameter.
  • the number of cells corresponding to ⁇ 1 can also be considered as the number of scheduling cells whose subcarrier spacing corresponds to ⁇ 1.
  • the count of the first cell is the first parameter, or the first
  • the counting of a cell as its own scheduling cell is the first parameter; in the number of cells corresponding to ⁇ 2, the counting of the second cell as the scheduling cell for scheduling the first cell is the second parameter.
  • the counting of the second cell as a scheduling cell for scheduling the first cell is the second parameter, which means that the second cell, as a scheduling cell for self-scheduling or scheduling other cells, will perform other counts.
  • the UE capability indicates the number of cells that the terminal equipment can support simultaneous blind detection, which can be reported in the form of parameters such as pdcch-BlindDetectionCA.
  • the time unit is a time slot
  • the configuration parameter of the second subcarrier spacing is ⁇ 2
  • the number of cells corresponding to all subcarrier intervals in the formula includes the number of cells corresponding to ⁇ 1 and the number of cells corresponding to ⁇ 2.
  • the number of cells corresponding to ⁇ 1 can be regarded as the number of scheduled cells whose subcarrier spacing of the scheduling cell corresponds to ⁇ 1.
  • the first cell count is the first parameter
  • the first cell count is the second parameter.
  • the number of cells corresponding to ⁇ 1 can also be considered as the number of scheduling cells whose subcarrier spacing corresponds to ⁇ 1.
  • the count of the first cell is the first parameter, or the first
  • the counting of a cell as its own scheduling cell is the first parameter; in the number of cells corresponding to ⁇ 2, the counting of the second cell as the scheduling cell for scheduling the first cell is the second parameter.
  • the counting of the second cell as a scheduling cell for scheduling the first cell is the second parameter, which means that the second cell, as a scheduling cell for self-scheduling or scheduling other cells, will perform other counts.
  • the UE capability indicates the number of cells that the terminal equipment can support simultaneous blind detection, which can be reported in the form of parameters such as pdcch-BlindDetectionCA.
  • the number of cells corresponding to all subcarrier intervals is C, including C1 cells with the first subcarrier interval, the C1 cells with the first subcarrier interval include the first cell, and other cells are self-scheduled Cells; the number of cells corresponding to all subcarrier intervals is C and also includes C2 cells with second subcarrier intervals, C2 cells with second subcarrier intervals include the second cell, other cells are self-scheduling cells, and the second The cell is also a self-scheduling cell.
  • the first subcarrier spacing corresponds to ⁇ 1
  • the second subcarrier spacing corresponds to ⁇ 2.
  • the number of cells corresponding to all subcarrier intervals is C1+C2.
  • the number of cells corresponding to ⁇ 2 is C2+s2, where s2 means that in the count of the adjusted cells whose subcarrier spacing is ⁇ 2 in the scheduling cell, the first cell count is s2, or means that the subcarrier spacing in the scheduling cell is Among the counts of scheduling cells of ⁇ 2, the count of the second cell is s2, and more specifically, the count is s2 when the second cell is used as the scheduling cell of the first cell.
  • the first scheme may correspond to the first scenario, that is, the first scheme is used in the first scenario;
  • the second scheme may correspond to the second scenario, that is, the second scheme is used in the second scenario.
  • the control channels of the two cells are received using the BD/CCE capability corresponding to the first subcarrier interval.
  • the maximum number of PDCCH candidates that the terminal device needs to monitor for scheduling the first cell may be determined by using the first solution.
  • the terminal equipment with a capability requires the access network equipment to ensure that in each time unit, the configured search space set is within the same continuous 3 OFDM symbols, then further restrictions are required Whether the first plan includes one or more of conditions 1-4 to 1-6.
  • the terminal equipment needs to store the PDCCH of 6 symbols at most in the second cell for PDCCH monitoring. If the search space of the second cell is limited to the 3 symbols of the second cell, that is, the 3 symbols corresponding to 30 KHz, then the terminal device only needs to store signals of 3 symbols in each cell for PDCCH monitoring, Therefore, the storage space of the terminal device is saved.
  • the control channel reception of the two cells is realized by monitoring capabilities of different subcarrier spacings, that is, BD/CCE capabilities corresponding to different subcarrier spacings.
  • the subcarrier spacing of the first cell corresponds to ⁇ 1
  • the maximum number of PDCCH candidates that the terminal device needs to monitor for scheduling the first cell In a time unit corresponding to the second subcarrier interval, the maximum number of PDCCH candidates that the terminal device needs to monitor for scheduling the first cell, and the number of PDCCH candidates that the terminal device needs to monitor for scheduling the first cell
  • the maximum number of non-overlapping CCEs can be determined using the second solution.
  • the access network device or the terminal device may include a hardware structure and/or a software module, and realize the above-mentioned in the form of a hardware structure, a software module, or a hardware structure plus a software module.
  • various functions Whether one of the above-mentioned functions is executed in the form of a hardware structure, a software module, or a hardware structure plus a software module depends on the specific application and design constraints of the technical solution.
  • each functional module in each embodiment of the present application may be integrated into one processor, or physically exist separately, or two or more modules may be integrated into one module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules.
  • the embodiment of the present application further provides a communication device 300 for realizing the functions of the access network device or the terminal device in the above method.
  • the form of the communication device is not limited, and may be a hardware structure, a software module, or a hardware structure plus a software module.
  • the device may be a software module or a system on a chip.
  • the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.
  • the apparatus 300 may include: a processing unit 301 and a communication unit 302 .
  • the communication unit may also be referred to as a transceiver unit, and may include a sending unit and/or a receiving unit, respectively configured to perform the steps of sending and receiving performed by the access network device or the terminal device in the method embodiments above.
  • a communication unit may also be referred to as a transceiver.
  • a processing unit may also be referred to as a processing module, or a processing device, or the like.
  • the device in the communication unit 302 for realizing the receiving function may be regarded as a receiving unit
  • the device in the communication unit 302 for realizing the sending function may be regarded as a sending unit, that is, the communication unit 302 includes a receiving unit and a sending unit.
  • a communication unit may sometimes be implemented as a pin, a transceiver, a transceiver, or a transceiver circuit, and the like.
  • the processing unit may sometimes be implemented as a processor, or a processing board, or the like.
  • the receiving unit can sometimes be realized as a pin, a receiver, a receiver or a receiving circuit, etc.
  • the sending unit can sometimes be realized as a pin, a transmitter, a transmitter, or a transmitting circuit, and the like.
  • a processing unit configured to determine first indication information
  • a communication unit configured to send first indication information to the access network device
  • the first indication information is used to indicate one or both supported by the terminal equipment from the first scheme and the second scheme; both the first scheme and the second scheme are used to determine the co-scheduled In one cell, at least one of the maximum number of physical downlink control channel candidates to be monitored by the terminal device and the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates to be monitored;
  • the first solution includes: the first parameter and the second parameter are preset by the protocol;
  • the second solution includes: the first parameter and the second parameter are allowed to be configured by the access network device; or, the second solution includes: the first parameter and the second parameter are preset by the protocol, so The first parameter preset in the second scheme is different from the first parameter preset in the first scheme, and/or the second parameter preset in the second scheme is different from the The second parameter preset in the first solution is different;
  • the first parameter and the second parameter are used to determine the first total quantity, the third total quantity, the second total quantity and the fourth total quantity;
  • the first total quantity and the third total quantity corresponding to the first scheme meet any of the following items, and the first total quantity and the third total quantity corresponding to the second scheme meet any of the following items:
  • the first total number refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval number, and the maximum value of the sum of the number of physical downlink control channel candidates for scheduling the first cell that the terminal equipment needs to monitor on the second cell;
  • the third total number refers to one corresponding to the first subcarrier interval In time units, on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the first subcarrier spacing, the number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal equipment needs to monitor, and the number of control channel elements in the second subcarrier spacing On the cell, the maximum value of the sum of the numbers of non-overlapping control channel elements in the physical downlink control channel candidates for scheduling the first cell that the terminal device needs to monitor;
  • the first total number refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval
  • the maximum number of the number refers to a time unit corresponding to the first subcarrier interval, and on all scheduling cells whose subcarrier intervals of the active downlink bandwidth part are the first subcarrier interval, the terminal equipment needs to The maximum number of non-overlapping control channel elements among the monitored physical downlink control channel candidates;
  • the second total quantity and the fourth total quantity corresponding to the first scheme meet any of the following items, and the second total quantity and the fourth total quantity corresponding to the second scheme meet any of the following items:
  • the second total quantity refers to that in a time unit corresponding to the second subcarrier interval, except on the second cell, the physical downlink control channel candidate of the first cell that the terminal device needs to monitor, the subcarriers in the active downlink bandwidth part
  • the carrier interval is the maximum value of the number of physical downlink control channel candidates that the terminal device needs to monitor on all scheduling cells with the second subcarrier interval
  • the fourth total number refers to a time unit corresponding to the second subcarrier interval, Except for the non-overlapping control channel elements in the physical downlink control channel candidates of the scheduling first cell that the terminal equipment needs to monitor on the second cell, all scheduling cells whose subcarrier spacing in the active downlink bandwidth part is the second subcarrier spacing above, the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal equipment needs to monitor;
  • the second total quantity refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the second subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the second subcarrier interval
  • the maximum number of the number; the fourth total number means that in a time unit corresponding to the second subcarrier spacing, on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the second subcarrier spacing, the terminal equipment needs to The maximum number of non-overlapping control channel elements among the monitored physical downlink control channel candidates; wherein, the subcarrier spacing of the first cell is equal to the first subcarrier spacing, and the subcarrier spacing of the second cell is equal to the second subcarrier spacing .
  • processing unit 301 and the communication unit 302 can also perform other functions.
  • processing unit 301 and the communication unit 302 can also perform other functions.
  • the processing unit 301 and the communication unit 302 can also perform other functions.
  • the description related to the terminal device in the method embodiment shown in FIG. 2 and details are not repeated here.
  • the communication unit is configured to receive first indication information from the terminal device; wherein, the first indication information is used to indicate one or both of the first scheme and the second scheme supported by the terminal equipment;
  • a processing unit configured to respectively determine the configurations of the search space sets of the first cell and the second cell according to the first scheme or the second scheme; wherein, the first scheme and the second scheme are both used to determine the configurations of the search space sets in the first cell and the second cell When co-scheduling the first cell, at least one of the maximum number of physical downlink control channel candidates to be monitored by the terminal device and the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates to be monitored;
  • both the first scheme and the second scheme are used to determine the maximum number of physical downlink control channel candidates to be monitored by the terminal equipment and the physical downlink control channel to be monitored when the first cell and the second cell jointly schedule the first cell. at least one of the maximum number of non-overlapping control channel elements among the control channel candidates;
  • the first solution includes: the first parameter and the second parameter are preset by the protocol;
  • the second solution includes: the first parameter and the second parameter are allowed to be configured by the access network device; or, the second solution includes: the first parameter and the second parameter are preset by the protocol, so The first parameter preset in the second scheme is different from the first parameter preset in the first scheme, and/or the second parameter preset in the second scheme is different from the The second parameter preset in the first solution is different;
  • the first parameter and the second parameter are used to determine the first total quantity, the third total quantity, the second total quantity and the fourth total quantity; the first total quantity and the third total quantity corresponding to the first plan are satisfied by any of the following, The first total quantity and the third total quantity corresponding to the second plan meet any of the following items:
  • the first total number refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval number, and the maximum value of the sum of the number of physical downlink control channel candidates for scheduling the first cell that the terminal equipment needs to monitor on the second cell;
  • the third total number refers to one corresponding to the first subcarrier interval In time units, on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the first subcarrier spacing, the number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal equipment needs to monitor, and the number of control channel elements in the second subcarrier spacing On the cell, the maximum value of the sum of the numbers of non-overlapping control channel elements in the physical downlink control channel candidates for scheduling the first cell that the terminal device needs to monitor;
  • the first total number refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the first subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the first subcarrier interval
  • the maximum number of the number refers to a time unit corresponding to the first subcarrier interval, and on all scheduling cells whose subcarrier intervals of the active downlink bandwidth part are the first subcarrier interval, the terminal equipment needs to The maximum number of non-overlapping control channel elements among the monitored physical downlink control channel candidates;
  • the second total quantity and the fourth total quantity corresponding to the first scheme meet any of the following items, and the second total quantity and the fourth total quantity corresponding to the second scheme meet any of the following items:
  • the second total quantity refers to that in a time unit corresponding to the second subcarrier interval, except on the second cell, the physical downlink control channel candidate of the first cell that the terminal device needs to monitor, the subcarriers in the active downlink bandwidth part
  • the carrier interval is the maximum value of the number of physical downlink control channel candidates that the terminal device needs to monitor on all scheduling cells with the second subcarrier interval
  • the fourth total number refers to a time unit corresponding to the second subcarrier interval, Except for the non-overlapping control channel elements in the physical downlink control channel candidates of the scheduling first cell that the terminal equipment needs to monitor on the second cell, all scheduling cells whose subcarrier spacing in the active downlink bandwidth part is the second subcarrier spacing above, the maximum number of non-overlapping control channel elements among the physical downlink control channel candidates that the terminal equipment needs to monitor;
  • the second total quantity refers to the physical downlink control channel candidates that the terminal equipment needs to monitor in a time unit corresponding to the second subcarrier interval, on all scheduling cells whose subcarrier interval of the active downlink bandwidth part is the second subcarrier interval
  • the maximum number of the number; the fourth total number means that in a time unit corresponding to the second subcarrier spacing, on all scheduling cells whose subcarrier spacing of the activated downlink bandwidth part is the second subcarrier spacing, the terminal equipment needs to The maximum number of non-overlapping control channel elements among the monitored physical downlink control channel candidates; wherein, the subcarrier spacing of the first cell is equal to the first subcarrier spacing, and the subcarrier spacing of the second cell is equal to the second subcarrier spacing .
  • processing unit 301 and the communication unit 302 can also perform other functions.
  • processing unit 301 and the communication unit 302 can also perform other functions.
  • the description related to the access network device in the method embodiment shown in FIG. 2 and details are not repeated here.
  • FIG. 4 shows an apparatus 400 provided in the embodiment of the present application.
  • the apparatus shown in FIG. 4 may be a hardware circuit implementation manner of the apparatus shown in FIG. 3 .
  • the communication device may be applicable to the flow chart shown above, and execute the functions of the terminal device or the access network device in the above method embodiments. For ease of illustration, FIG. 4 only shows the main components of the communication device.
  • the communication device 400 includes a processor 410 and an interface circuit 420 .
  • the processor 410 and the interface circuit 420 are coupled to each other.
  • the interface circuit 420 may be a transceiver, a pin, an interface circuit or an input/output interface.
  • the communication device 400 may further include a memory 430 for storing instructions executed by the processor 410 or storing input data required by the processor 410 to execute the instructions or storing data generated after the processor 410 executes the instructions.
  • part or all of the memory 430 may reside in the processor 410 .
  • the processor 410 is used to implement the functions of the above processing unit 301
  • the interface circuit 420 is used to implement the functions of the above communication unit 302 .
  • the terminal device chip implements the functions of the terminal device in the above method embodiment.
  • the terminal device chip receives information from other modules in the terminal device (such as radio frequency modules or antennas), and the information is sent to the terminal device by the access network device; or, the terminal device chip sends information to other modules in the terminal device (such as radio frequency modules) module or antenna) to send information, which is sent by the terminal device to the access network device.
  • the terminal device sends the first indication information as an example for description.
  • the terminal device may not send the first indication information.
  • whether to use the first scheme or the second scheme can be determined according to the configuration of other parameters, for example, according to the configuration of the first parameter and the second parameter. , described in detail below.
  • FIG. 5 it is a schematic flowchart of a communication method provided by the embodiment of the present application.
  • the method includes:
  • the terminal device determines at least one of a maximum number of PDCCH candidates to be monitored and a maximum number of non-overlapping CCEs among PDCCH candidates to be monitored according to the first scheme or the second scheme.
  • the access network device respectively determines configurations of search space sets of the first cell and the second cell according to the first scheme or the second scheme.
  • the terminal equipment and the access network equipment can adopt the same method, specifically:
  • the terminal device determines at least one of the maximum number of PDCCH candidates to be monitored and the maximum number of non-overlapping CCEs in the PDCCH candidates to be monitored according to the first scheme; the access network device respectively determining configurations of search space sets of the first cell and the second cell according to the first solution;
  • the terminal device determines at least one of the maximum number of PDCCH candidates to be monitored and the maximum number of non-overlapping CCEs in the PDCCH candidates to be monitored according to the second solution; the access network device The configurations of the search space sets of the first cell and the second cell are respectively determined according to the second solution.
  • the first condition may include: the value of the first parameter is 1, and the value of the second parameter is 0; the second condition may include: the value of the first parameter is not 1, and the value of the second parameter The value of the second parameter is not 0.
  • the first condition may include: the first parameter and the second parameter are preset, and the preset value of the first parameter is 1, and the preset value of the second parameter is 0;
  • the second condition may include: at least one of the first parameter and the second parameter is allowed to be configured by the access network device.
  • the access network device can configure at least one of the first parameter and the second parameter through RRC signaling, that is, the access network device can configure the first parameter or the second parameter through RRC signaling, or can configure the first parameter or the second parameter through RRC signaling Configure the first parameter and the second parameter.
  • the access network device configures at least one of the first parameter and the second parameter, that is, the access network device can configure the first parameter or the second parameter through RRC signaling, and can also configure the first parameter through RRC signaling and the second parameter.
  • the access network device may also configure at least one of the first parameter and the second parameter in other ways, which is not limited in this application.
  • the first condition may include: the value of the second parameter is 0; the second condition may include: the value of the second parameter is not 0.
  • the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) having computer-usable program code embodied therein.
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising instruction means, the instructions
  • the device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

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Abstract

本申请实施例提供一种通信方法及装置，其中方法包括：终端设备确定第一指示信息，并向接入网设备发送第一指示信息；第一指示信息用于从第一方案和第二方案中指示终端设备支持的一种或两种；第一方案和第二方案均用于确定在第一小区和第二小区共同调度第一小区时，终端设备需监测的PDCCH候选的个数的最大值以及需监测的PDCCH候选中不重叠的CCE的个数的最大值的至少一项。通过上面的方法，终端设备可以通过第一指示信息指示其支持哪些方案，不同方案对应不同的监测上限，即对应不同的PDCCH个数的最大值以及不重叠的CCE的个数的最大值，可以使得接入网设备能够确定如何为终端设备配置相应的搜索空间。

Description

一种通信方法及装置
相关申请的交叉引用
本申请要求在2021年11月05日提交中国专利局、申请号为202111308863.1、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中；本申请要求在2021年11月16日提交中国专利局、申请号为202111358112.0、申请名称为“一种通信方法及装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及装置。
背景技术
目前的跨载波调度中，辅小区是不能跨载波调度主小区的，且一个被调小区只能有一个调度小区。考虑到主小区的负载有可能较高，目前协议正在讨论引入用辅小区调度主小区，且主小区可以被主小区自己和辅小区两个小区上的物理下行控制信道(physical downlink control channel，PDCCH)同时调度，也就是被调小区主小区会有两个调度小区，即辅小区和主小区自己。
当主小区和辅小区都可以调度主小区，如何确定终端设备在两个调度小区的实际盲检(blind detection，BD)/控制信道元素(control channel element，CCE)监测上限，是一个亟待解决的问题。
发明内容
本申请提供一种通信方法及装置，用以解决当两个小区可以共同调度这两个小区中的一个小区时，如何确定在一个时间单元上监测的PDCCH候选个数的上限和/或不重叠的CCE个数的上限。
第一方面，本申请提供一种通信方法，该方法包括：
终端设备确定第一指示信息，并向接入网设备发送第一指示信息；其中，第一指示信息用于从第一方案和第二方案中指示终端设备支持的一种或两种；第一方案和第二方案均用于确定在第一小区和第二小区共同调度第一小区时，终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；其中，第一方案包括：第一参数和第二参数是协议预设的；
第二方案包括：第一参数和第二参数是被允许由接入网设备配置的；或者，第二方案包括：第一参数和第二参数是协议预设的；第二方案中预设的第一参数和第一方案中预设的第一参数不同，和/或第二方案中预设的第二参数和第一方案中预设的第二参数不同；
第一参数和第二参数用于确定第一总数量、第三总数量、第二总数量和第四总数量；
第一方案对应的第一总数量和第三总数量满以下任一项，第二方案对应的第一总数量和第三总数量满以下任一项：
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子 载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选的个数之和的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数之和的最大值；
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
所述第一方案对应的第二总数量和第四总数量满以下任一项，所述第二方案对应的第二总数量和第四总数量满以下任一项：
所述第二总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选外，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数的最大值；所述第四总数量是指在所述第二子载波间隔对应的一个时间单元上，除在第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选中不重叠的控制信道元素外，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
所述第二总数量是指在所述第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数的最大值；所述第四总数量是指在所述第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；其中，所述第一小区的子载波间隔等于所述第一子载波间隔，所述第二小区的子载波间隔等于所述第二子载波间隔。
通过上面的方法，终端设备可以通过第一指示信息指示其支持哪些方案，不同方案对应不同的监测上限，即对应不同的物理下行控制信道候选的个数的最大值以及物理下行控制信道候选中不重叠的控制信道元素的个数的最大值，因此可以使得接入网设备能够确定如何为终端设备配置相应的搜索空间。
一种可能的实现方式，终端设备接收来自接入网设备的第三指示信息，第三指示信息用于指示第二方案中的第一参数的取值以及第二参数的取值中的至少一项。
一种可能的实现方式，终端设备接收来自接入网设备的第二指示信息，第二指示信息用于指示采用第一方案或第二方案。
通过上面的方法，接入网设备通过第二指示信息可以明确指示采用哪一种方案，使得终端设备能够准确的确定需监测的物理下行控制信道候选个数的最大值以及不重叠的控制信道元素的个数的最大值。
一种可能的实现方式，在第一小区和第二小区共同调度第一小区时，终端设备根据第 二指示信息指示的方案确定需监测的物理下行控制信道候选的个数的最大值以及需监测物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项。
第二方面，本申请提供一种控制信道传输方法，包括：
接入网设备接收来自终端设备的第一指示信息；其中，第一指示信息用于从第一方案和第二方案中指示终端设备支持的一种或两种；
接入网设备根据第一方案或第二方案分别确定第一小区和第二小区的搜索空间集的配置。
结合第一方面或第二方面，一种可能的实现方式，第一方案和第二方案均用于确定在第一小区和第二小区共同调度第一小区时，终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；
其中，第一方案和第二方案均用于确定在第一小区和第二小区共同调度第一小区时，终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；
其中，第一方案包括：第一参数和第二参数是协议预设的；
第二方案包括：第一参数和第二参数是被允许由接入网设备配置的；或者，第二方案包括：第一参数和第二参数是协议预设的；第二方案中预设的第一参数和第一方案中预设的第一参数不同，和/或第二方案中预设的第二参数和第一方案中预设的第二参数不同；
第一参数和第二参数用于确定第一总数量、第三总数量、第二总数量和第四总数量；
第一方案对应的第一总数量和第三总数量满以下任一项，第二方案对应的第一总数量和第三总数量满以下任一项：
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选的个数之和的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数之和的最大值；
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
第一方案对应的第二总数量和第四总数量满以下任一项，第二方案对应的第二总数量和第四总数量满以下任一项：
第二总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选外，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第四总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选中不重叠的控制信道元素外，在激 活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
第二总数量是指在第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第四总数量是指在第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
其中，第一小区的子载波间隔等于第一子载波间隔，第二小区的子载波间隔等于第二子载波间隔。
结合第一方面或第二方面，一种可能的实现方式，第一方案还包括以下至少一项：
终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值根据第一数量确定，第一数量为第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值不根据第一数量确定，第一数量为第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值可以大于第一数量，第一数量为第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值根据第二数量确定，第二数量为第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值不根据第二数量确定，第二数量为第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值可以大于第二数量，第二数量为第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量和第一总数量中的最小值乘以第三参数，第三数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；第三参数被允许由接入网设备配置；
终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量和第二总数量中的最小值乘以第三参数，第四数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
终端设备在第二小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调 度第一小区的物理下行控制信道候选的个数的最大值为第三数量和第一总数量中的最小值乘以1与第三参数的差值，第三数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；第三参数被允许由接入网设备配置；
终端设备在第二小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量和第二总数量中的最小值乘以1与第三参数的差值，第四数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
所有用来调度第一小区的第二小区上的搜索空间配置在第一子载波间隔对应的一个时间单元的连续3个符号内；
所有用来调度第一小区的第一小区和第二小区上的搜索空间配置在第一子载波间隔对应的一个时间单元的连续3个符号内；该方式可以实现用一个小区的PDCCH监测资源实现两个调度小区的PDCCH监测；
所有用来调度第一小区的第二小区上的搜索空间配置在第二子载波间隔对应的一个时间单元的连续3个符号内，该方式通过限制在第二子载波间隔对应的一个时间单元的连续3个符号内，可以减少终端设备在监测PDCCH候选时所需的存储空间。
结合第一方面或第二方面，一种可能的实现方式，第二方案还包括以下至少一项：
终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值根据第一数量和第二总数量确定，第一数量为第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值根据第二数量和第四总数量确定，第二数量为第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量乘以第三参数，第三数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；第三参数被允许由接入网设备配置；
终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量乘以第三参数，第四数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
终端设备在第二小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量乘以1与第三参数的差值，第三数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；第三参数被允许由接入网设备配置；
终端设备在第二小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量乘以1与第三参数的差值，第四数量为第一子载波间隔对应的时间单元的需监测的物理 下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
结合第一方面或第二方面，一种可能的实现方式，第一方案中，第一参数的预设取值为1，第二参数的预设取值为0。
一种可能的实现方式，接入网设备向终端设备发送第三指示信息，第三指示信息用于指示第二方案中的第一参数的取值以及第二参数的取值中的至少一项。
结合第一方面或第二方面，一种可能的实现方式，第二方案中，第一参数的取值与第二参数的取值的和为1。
结合第一方面或第二方面，一种可能的实现方式，终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量和第一总数量中的最小值乘以第三参数，第三数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；第三参数被允许由接入网设备配置；
终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量和第二总数量中的最小值乘以第三参数，第四数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
结合第一方面或第二方面，一种可能的实现方式，终端设备在第二小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量和第一总数量中的最小值乘以1与第三参数的差值，第三数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；第三参数被允许由接入网设备配置；
终端设备在第二小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量和第二总数量中的最小值乘以1与第三参数的差值，第四数量为第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
一种可能的实现方式，该方法还包括：接入网设备向终端设备发送第二指示信息，第二指示信息用于指示采用第一方案或第二方案。
第三方面，本申请还提供一种通信装置，该通信装置能够实现上述第一方面提供的任一方法或任一实现方式。该通信装置可以通过硬件实现，可以通过软件实现，或者可以通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的实现方式中，该通信装置包括：处理器，该处理器被配置为支持该通信装置执行以上第一方面所示方法。该通信装置还可以包括存储器，该存储可以与处理器耦合，其保存该通信装置必要的程序指令和数据。可选地，该通信装置还包括接口电路，该接口电路用于支持该通信装置与其他通信装置进行通信。
在一种可能的实施方式中，通信装置的结构中包括处理单元和通信单元，这些单元可以执行上述方法示例中相应功能，具体参见第一方面中的描述，此处不做赘述。
第四方面，本申请还提供一种通信装置，该通信装置能够实现上述第二方面中提供的任一方法或任一实现方式。该通信装置可以通过硬件实现，可以通过软件实现，或者可以 通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的单元或模块。
在一种可能的实现方式中，该通信装置包括：处理器，该处理器被配置为支持该通信装置执行以上第二方面所示方法。该通信装置还可以包括存储器，该存储可以与处理器耦合，其保存该通信装置必要的程序指令和数据。可选地，该通信装置还包括接口电路，该接口电路用于支持该通信装置与其他通信装置进行通信。
在一种可能的实施方式中，通信装置的结构中包括处理单元和通信单元，这些单元可以执行上述方法示例中相应功能，具体参见第二方面提供的方法中的描述，此处不做赘述。
第五方面，提供了一种通信装置，包括处理器和接口电路，接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至该处理器或将来自该处理器的信号发送给该通信装置之外的其它通信装置，该处理器用于执行所述存储器中存储的计算机程序或指令，实现前述第一方面中任意可能的实现方式中的方法。可选地，该装置还包括存储器，所述存储器中存储计算机程序或指令。
第六方面，提供了一种通信装置，包括处理器和接口电路，接口电路用于接收来自该通信装置之外的其它通信装置的信号并传输至该处理器或将来自该处理器的信号发送给该通信装置之外的其它通信装置，该处理器用于执行所述存储器中存储的计算机程序或指令，实现前述第二方面中任意可能的实现方式中的方法。可选地，该装置还包括存储器，所述存储器中存储计算机程序或指令。
第七方面，提供一种芯片，该芯片包括处理器，还可以包括存储器，所述处理器与存储器耦合，用于执行所述存储器中存储的计算机程序或指令，使得芯片实现前述第一方面中任意可能的实现方式中的方法。
第八方面，提供一种芯片，该芯片包括处理器，还可以包括存储器，所述处理器与存储器耦合，用于执行所述存储器中存储的计算机程序或指令，使得芯片实现前述第二方面中任意可能的实现方式中的方法。
第九方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序或指令，当所述计算机程序或指令在计算机上运行时，使得所述计算机实现前述第一方面中任意可能的实现方式中的方法。
第十方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有计算机程序或指令，当所述计算机程序或指令在计算机上运行时，使得所述计算机实现前述第二方面中任意可能的实现方式中的方法。
第十一方面，提供了一种包括计算机可读指令的计算机程序产品，当所述计算机可读指令在计算机上运行时，使得所述计算机实现前述第一方面中任意可能的实现方式中的方法。
第十二方面，提供了一种包括计算机可读指令的计算机程序产品，当所述计算机可读指令在计算机上运行时，使得所述计算机实现前述第二方面中任意可能的实现方式中的方法。
第十三方面，提供一种通信系统，所述系统包括实现第一方面所述的装置(如终端设备)以及实现第二方面所述的装置(如接入网设备)。
附图说明
图1为本申请可以应用的通信系统的架构示意图；
图2为本申请实施例提供的一种通信方法流程示意图；
图3为本申请实施例提供的一种通信装置结构示意图；
图4为本申请实施例提供的一种通信装置结构示意图；
图5为本申请实施例提供的一种通信方法流程示意图。
具体实施方式
下面结合说明书附图对本申请实施例做详细描述。
本申请的技术方案可以应用于各种通信系统，例如：新无线(new radio，NR)系统以及长期演进(long term evolution，LTE)系统或下一代移动通信系统等，在此不做限制。
本申请中，终端设备可以简称为终端。终端设备可以经无线接入网(radio access network，RAN)与一个或多个核心网进行通信。终端设备，可以为具有无线收发功能的设备或可设置于该设备中的芯片。终端设备也可以称为用户设备(user equipment，UE)、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、无线通信设备、用户代理或用户装置。本申请中的终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(virtual reality，VR)终端、增强现实(augmented reality，AR)终端、可穿戴设备、车辆、无人机、直升机、飞机、轮船、机器人、机械臂、或智能家居设等等。本申请中的终端设备可以广泛应用于各种场景中的通信，例如包括但不限于以下至少一个场景：增强移动宽带(enhanced mobile broadband，eMBB)、超可靠低时延通信(ultra-reliable low-latency communication，URLLC)、设备到设备(device-to-device，D2D)、车物(vehicle to everything，V2X)、机器类通信(machine-type communication，MTC)、大规模机器类通信(massive machine-type communication，mMTC)、物联网(internet of things，IOT)、虚拟现实、增强现实、工业控制、自动驾驶、远程医疗、智能电网、智能家具、智能办公、智能穿戴、智能交通、或智慧城市等。本申请对终端所采用的具体技术和具体设备形态不做限定。
接入网设备可以是基站(base station)、节点B(NodeB)、演进型节点B(evolved NodeB，eNodeB)、发送接收点(transmission reception point，TRP)、第五代(5th generation，5G)移动通信系统中的下一代节点B(next generation NodeB，gNB)、开放无线接入网(open radio access network，O-RAN或open RAN)中的接入网设备、第六代(6th generation，6G)移动通信系统中的下一代基站、未来移动通信系统中的基站或无线保真(wireless fidelity，WiFi)系统中的接入节点等；或者可以是完成基站部分功能的模块或单元，例如，可以是集中式单元(central unit，CU)、分布式单元(distributed unit，DU)、集中单元控制面(CU control plane，CU-CP)模块、或集中单元用户面(CU user plane，CU-UP)模块。接入网设备可以是宏基站，也可以是微基站或室内站，还可以是中继节点或施主节点等。本申请中对接入网设备所采用的具体技术和具体设备形态不做限定。
本申请中，以终端设备与接入网设备之间的交互为例进行描述，需要说明的是，本申请提供的方法，不仅可以应用于终端设备与网络侧之间的交互，还可以应用于任意两个设备之间的交互中，本申请对此并不限定。
图1是本申请可以应用的通信系统的架构示意图，该通信系统中包括接入网设备和终端设备。终端设备可以与接入网设备建立连接，并和接入网设备进行通信。图1只是示意图，本申请对该通信系统中包括的接入网设备和终端设备的数量不做限定。
接入网设备和终端设备可以部署在陆地上，包括室内或室外、手持或车载；也可以部署在水面上；还可以部署在空中的飞机、气球和卫星上。本申请的实施例对接入网设备和终端设备的应用场景不做限定。
本申请的实施例可以适用于下行信号传输，也可以适用于上行信号传输，还可以适用于设备到设备(device to device，D2D)的信号传输。对于下行信号传输，发送设备是接入网设备，对应的接收设备是终端设备。对于上行信号传输，发送设备是终端设备，对应的接收设备是接入网设备。对于D2D的信号传输，发送设备是终端设备，对应的接收设备也是终端设备。本申请的实施例信号的传输方向不做限定。
接入网设备和终端设备之间以及终端设备和终端设备之间可以通过授权频谱(licensed spectrum)进行通信，也可以通过免授权频谱(unlicensed spectrum)进行通信，也可以同时通过授权频谱和免授权频谱进行通信。接入网设备和终端设备之间以及终端设备和终端设备之间可以通过6G以下的频谱进行通信，也可以通过6G以上的频谱进行通信，还可以同时使用6G以下的频谱和6G以上的频谱进行通信。本申请的实施例对接入网设备和终端设备之间所使用的频谱资源不做限定。
为便于理解本申请，首先介绍本申请可能涉及的技术术语。
主小区和辅小区：终端设备可以和多个小区建立连接，这些小区分为两组：主小区组(master cell group，MCG)和辅小区组(secondary cell group，SCG)。MCG包括一个主小区，还可以包括一个或多个辅小区；同样的，SCG包括一个主小区，还可以包括一个或多个辅小区。如果没有特别说明的话，主小区可以是指MCG的主小区或SCG的主小区。
span可以译作“时间跨度”、“时间单元”、“子时间单元”等，是一个时隙里的一组连续的正交频分复用(orthogonal frequency-division multiplexing，OFDM)符号。终端设备支持的任何一个PDCCH在监测时机(monitoring occasion)都包含在某一个span内。一个span的起始符号是一个PDCCH监测时机的起始符号，结束符号是一个PDCCH监测时间的结束，一个span的符号数最大为Y。如果一个终端设备在一个小区上使用组合(X,Y)进行PDCCH监测，则两个连续span的起始符号的间隔的最小值为X个符号，这两个连续span可以是同一个时隙内的，或者时隙间的。
子载波间隔(subcarrier spacing，SCS)，NR系统中有5种子载波间隔，子载波间隔的配置参数μ的取值0～4，对应的子载波间隔分别为15KHz、30KHz，60KHz，120KHz和240KHz。
小区和载波：小区是高层(例如无线资源控制层、媒体接入控制层等在物理层之上的协议层)从资源管理或移动性管理的角度来描述的。每个网络设备的覆盖范围可以被划分为一个或多个小区。NR系统中，一个小区可以被配置一个下行载波，可选地还被配置至少一个上行载波。小区是一个通用的名称，针对终端设备而言，为其提供服务的小区称为服务小区。本申请中所涉及的小区也可以是服务小区。
跨载波调度：一个小区上的数据用这个小区上的PDCCH进行调度，这称为自调度；一个小区的数据用另一个小区上的PDCCH进行调度，这称为跨载波调度。在跨载波调度中，承载PDCCH的小区被称为主调小区或者调度小区(scheduling cell)，承载数据的小区 被称为被调小区(scheduled cell)。
NR系统等系统中，一个终端设备在配置了PDCCH的下行激活带宽部分(bandwidth part，BWP)上会监测一组PDCCH候选(candidates)。监测(monitor)是指在每个PDCCH candidate上根据待检测的下行控制信息(downlink control information，DCI)格式(format)进行PDCCH译码。接入网设备在一个PDCCH候选中，可能发送PDCCH，也有可能不发送PDCCH，因此终端设备监测的结果可能是检测(detect)到PDCCH，也可能是没检测到PDCCH。
一个PDCCH候选可以包含L＝{1,2,4,8,16}个控制信道元素(control channel element，CCE)。这里L称为PDCCH的聚合等级(aggregation level，AL)。一个CCE包含6个资源单元组(resource-element group，REG)，每个REG对应于一个正交频分复用(orthogonal frequency-division multiplexing，OFDM)符号(symbol)上的一个资源块(resource block，RB)。本申请中，可以将OFDM符号简称为符号。
一个AL为L的搜索空间(search space)定义为一组包含若干个大小为L个控制信道单元的PDCCH候选的集合。一个搜索空间集合(search space set)是一组包含不同的AL的search space的集合。一个search space set关联一个控制资源集合(control resource set，CORESET)。
PDCCH监测中有两项工作对终端设备的实现复杂度影响比较大，一个是监测的PDCCH候选个数，有时也称为盲检(blind detection，BD)个数；一个是不重叠的控制信道单元(control channel element，CCE)个数，有时会简称为CCE个数。其中，关联在同一个CORESET上的，时频资源重叠的CCE被认为是重叠的CCE，其他CCE被认为是不重叠的CCE。终端设备需要监测的PDCCH候选越多，终端设备的译码复杂度就越高；PDCCH候选中不重叠的CCE个数越多，终端设备的信道估计复杂度就越高。
协议预设了终端设备在一个小区的一个时间单元上监测的PDCCH候选个数的上限和不重叠的CCE个数的上限，即BD/CCE上限。这里的时间单元可以是指时隙(slot)，也可以是指时间跨度(span)。
接入网设备会给终端设备的每个服务小区配置PDCCH监测能力配置(PDCCHMonitoringCapabilityConfig)，这个参数可以有两种取值，即第三代伙伴计划(the3rd generation partnership project，3GPP)版本15(release 15，R15)中定义的R15 PDCCH监测能力(R15 PDCCH monitoring capability)和3GPP R16中定义的R16 PDCCH监测能力(R16 PDCCH monitoring capability)。
如果一个服务小区的PDCCHMonitoringCapabilityConfig＝R15 PDCCH monitoring capability，或者没有配置PDCCHMonitoringCapabilityConfig，则在一个服务小区的BWP的子载波间隔的配置参数为μ∈{0,1,2,3}时，每个时隙终端设备在这个服务小区上监测PDCCH候选的最大个数为
Figure PCTCN2022130028-appb-000001
监测的PDCCH候选中不重叠的CCE的最大个数为
Figure PCTCN2022130028-appb-000002
具体可以参考表1和表2所示。
表1：maximum number
Figure PCTCN2022130028-appb-000003
of monitored PDCCH candidates per slot for a BWP with SCS configurationμ∈{0,1,2,3}for a single serving cell
Figure PCTCN2022130028-appb-000004
Figure PCTCN2022130028-appb-000005
表2：maximum number
Figure PCTCN2022130028-appb-000006
of non-overlapped CCEs per slot for a BWP with SCS configurationμ∈{0,1,2,3}for a single serving cell
Figure PCTCN2022130028-appb-000007
如果一个服务小区的PDCCHMonitoringCapabilityConfig＝R16 PDCCH monitoring capability，则终端设备每个时间跨度在这个服务小区上监测PDCCH候选的最大个数为
Figure PCTCN2022130028-appb-000008
监测的PDCCH候选中不重叠的CCE的最大个数为
Figure PCTCN2022130028-appb-000009
具体可以参考表3和表4所示。
表3：maximum number
Figure PCTCN2022130028-appb-000010
of monitored PDCCH candidates in a span for combination(X,Y)for a BWP with SCS configurationμ∈{0,1}for a single serving cell
Figure PCTCN2022130028-appb-000011
表4：maximum number
Figure PCTCN2022130028-appb-000012
of non-overlapped CCEs in a span for combination(X,Y)for a BWP with SCS configurationμ∈{0,1}for a single serving cell
Figure PCTCN2022130028-appb-000013
上面的表1至表4，规定了终端设备在一个小区的一个时间单元上监测的PDCCH候选个数的上限和不重叠的CCE个数的上限，但是终端设备实际的检测能力可能小于上面表格中规定的数量。举例来说，在以下四种场景中，终端设备可以分别确定实际需要在一个小区的一个时间单元上监测的PDCCH候选个数的上限和不重叠的CCE个数的上限。
场景一：
UE的盲检能力，即UE能力以小区数的形式表征，例如终端设备可以上报支持4个小区的盲检能力，或者上报支持6个小区的盲检能力。在R16引入了span后，即引入了monitoringCapabilityConfig-r16后，终端设备会针对基于slot和基于span的盲检能力分别上报。例如终端设备可以上报支持M个基于slot的盲检能力，支持N个基于span的盲检能力。
如果一个终端设备中的没有配置monitoringCapabilityConfig-r16，或者配置了monitoringCapabilityConfig-r16＝r15monitoringcapability的小区对应的小区数小于等于终端设备的对应的盲检能力(即基于slot的盲检能力)，则在激活下行BWP的子载波间隔为μ的调度小区上：
●当调度小区没有配置两个CORESETPoolIndex时，对于每个被调度小区，在调度小区的每个slot上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000014
个PDCCH candidate，也需要监测不超过
Figure PCTCN2022130028-appb-000015
个不重叠的CCE。
●当调度小区配置两个CORESETPoolIndex时，对于每个被调度小区，在调度小区的每个slot上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000016
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000017
个不重叠的CCE。这里γ是基站配置的参数，取值可以为1或者2。●当调度小区配置两个CORESETPoolIndex时，对于每个被调度小区，在调度小区的每个slot上，相同CORESETPoolIndex值的CORESET上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000018
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000019
个不重叠的CCE。
场景二：
如果一个终端设备中的没有配置monitoringCapabilityConfig-r16，或者配置了monitoringCapabilityConfig-r16＝r15monitoringcapability的小区对应的小区数大于UE的对应的盲检能力，则：
●在激活下行BWP的子载波间隔为μ的所有调度小区上，在每个slot上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000020
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000021
个不重叠的CCE。
其中，
Figure PCTCN2022130028-appb-000022
Figure PCTCN2022130028-appb-000023
UE能力是指终端设备支持盲检的小区数，下面的公式中，如果出现“UE能力”，表达的也是相同的含义。●当调度小区没有配置两个CORESETPoolIndex时，对于每个被调度小区，在激活下行BWP的子载波间隔为μ的调度小区的每个slot上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000024
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000025
个不重叠的CCE。
●当调度小区配置两个CORESETPoolIndex时，对于每个被调度小区，在激活下行BWP的子载波间隔为μ的调度小区的每个slot上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000026
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000027
个不重叠的CCE。这里γ是基站配置的参数，取值可以为1或者2。
●当调度小区配置两个CORESETPoolIndex时，对于每个被调度小区，在激活下行BWP的子载波间隔为μ的调度小区的每个slot上，相同CORESETPoolIndex值的CORESET上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000028
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000029
个不重叠的CCE。
场景三：
如果一个终端设备中的配置的monitoringCapabilityConfig-r16＝r16monitoringcapability的小区对应的小区数小于等于对应的UE能力(即基于span的盲检能力)，则在使用组合(X,Y)进行PDCCH监测且激活下行BWP的子载波间隔为μ的调度小区上。
●对于每个被调度小区，在调度小区的每个span上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000030
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000031
个不重叠的CCE。
场景四：
如果一个终端设备中的配置的monitoringCapabilityConfig-r16＝r16monitoringcapability的小区对应的小区数大于对应UE能力，则：
●在一个span组上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000032
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000033
个不重叠的CCE。
其中，
Figure PCTCN2022130028-appb-000034
Figure PCTCN2022130028-appb-000035
■如果对于使用组合(X,Y)进行PDCCH监测且激活下行BWP的子载波间隔为μ的所有调度小区，每个X符号中的任何一个span对都在Y个符号内，这里第一个X符号的起始符号在一个PDCCH监测机会内，下一个X符号的起始符号在一个PDCCH监测机会内，且不属于第一个X个符号，则这个span组是每个X符号中的所有span组成的span组。
■否则，这个span组是在使用组合(X,Y)进行PDCCH监测且激活下行BWP的子载波间隔为μ的所有调度小区，每个小区至多一个span组成的任一个span组。
●在使用组合(X,Y)进行PDCCH监测且激活下行BWP的子载波间隔为μ的调度小区上，对于每个被调度小区，在调度小区的每个span上，终端设备需要监测不超过
Figure PCTCN2022130028-appb-000036
个PDCCH候选，也需要监测不超过
Figure PCTCN2022130028-appb-000037
个不重叠的CCE。
上面的场景一至场景四，描述的是在一个被调小区只能有一个调度小区的情况下，如何确定在调度小区的一个时间单元上监测的PDCCH候选个数的上限和不重叠的CCE个数的上限。但是如果当两个小区可以共同调度这两个小区中的一个小区，例如第一小区和第二小区共同调度第一小区时，如何确定在一个时间单元上监测的PDCCH候选个数的上限和不重叠的CCE个数的上限，是一个亟待解决的问题。本申请将提供一种方法，解决上述问题。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案，并不构成对于本申请实施例提供的技术方案的限定，本领域普通技术人员可知，随着网络架构的演变和新业务场景的出现，本申请实施例提供的技术方案对于类似的技术问题，同样适用。
如图2所述，为本申请实施例提供的一种通信方法流程示意图。该方法包括：
S201：终端设备确定第一指示信息。
S202：终端设备向接入网设备发送所述第一指示信息。
S203：接入网设备接收来自终端设备的第一指示信息。
其中，第一指示信息用于从第一方案和第二方案中指示终端设备支持的一种或两种方案。第一方案和第二方案均用于确定在第一小区和第二小区共同调度第一小区时，终端设备需监测的PDCCH候选的个数的最大值以及需监测的PDCCH候选中不重叠的CCE的个数的最大值的至少一项。
具体的，第一方案或第二方案可以是用来确定在第二小区上，在第二子载波间隔对应的时间单元上，终端设备需监测的PDCCH候选的个数的最大值以及需监测PDCCH候选中不重叠的CCE的个数的最大值的至少一项。
本申请中，第一小区的子载波间隔等于第一子载波间隔，第二小区的子载波间隔等于第二子载波间隔，第一子载波间隔可以不等于第二子载波间隔，例如，第一子载波间隔可以小于第二子载波间隔，例如，第一子载波间隔为15KHz，第二子载波间隔为30KHz。
本申请中，时间单元可以是指时隙，也可以是指span。第一小区和第二小区并不限定，例如第一小区为主小区，第二小区为辅小区。
本申请中，第一方案可以包括以下至少一项：
条件1-1，第一参数和第二参数是预设的，例如第一参数的预设取值为1，第二参数的预设取值为0；
条件1-2，在确定
Figure PCTCN2022130028-appb-000038
和
Figure PCTCN2022130028-appb-000039
时，
Figure PCTCN2022130028-appb-000040
个被调小区包含第一小区，
Figure PCTCN2022130028-appb-000041
个被调小区不包含第一小区；或者
Figure PCTCN2022130028-appb-000042
个调度小区包含第一小区，
Figure PCTCN2022130028-appb-000043
个调度小区不包含作为第一小区的调度小区的第二小区，也就是第二小区不因为是第一小区的调度小区而在
Figure PCTCN2022130028-appb-000044
中计数。其中，μ1为第一小区的子载波间隔对应的配置参数，即第一子载波间隔对应的配置参数，μ2为第二小区的子载波间隔对应的配置参数，即第二子载波间隔对应的配置参数，包含可以表示计数为1，不包含可以表示计数为0；
条件1-3，终端设备确定第一总数量，第一总数量为在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选的个数之和的最大值；
条件1-4，终端设备确定第三总数量，第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数之和的最大值；
条件1-5，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值根据第一数量确定，第一数量为第二子载波间隔对应的时间单元的需监测的PDCCH候选的个数的预设最大值。举例来说，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值可以为第一数量；或者，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值可以大于第一数量或者不根据第一数量确定；另外，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值可以不根据第二总数量确定。
举例来说，时间单元为时隙时，如果第二子载波间隔的配置参数为μ2，那么第一数量可以为在表1中与μ2对应的
Figure PCTCN2022130028-appb-000045
例如，μ2为1，那么第一数量为36。
条件1-6，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的PDCCH候选中不重叠的CCE的个数的最大值根据第二数量确定，第二数量为第二子载波间隔对应的时间单元的需监测的PDCCH候选中不重叠的CCE的个数的预设最大值。举例来说，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的PDCCH候选中不重叠的CCE的个数的最大值可以为第二数量；或者，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的PDCCH候选中不重叠的CCE的个数的最大值可以大于第二数量；或者，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值不根据第二数量确定；另外，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的PDCCH候选中不重叠的CCE的个数的最大值可以不根据第四总数量确定。
举例来说，时间单元为时隙时，如果第二子载波间隔的配置参数为μ2，那么第二数量可以为在表2中与μ2对应的
Figure PCTCN2022130028-appb-000046
例如，μ2为1，那么第二数量为56。
条件1-7，所有用来调度第一小区的第二小区上的搜索空间配置在第一子载波间隔对应的一个时间单元的连续3个符号内；也就是说，所有用来调度第一小区的第二小区上的需监测的PDCCH候选配置在第一小区的一个时间单元的连续3个符号内。这里的3个符号是3个第一子载波间隔对应的3个OFDM符号。
条件1-8，所有用来调度第一小区的第一小区和第二小区上的搜索空间配置在第一子载波间隔对应的一个时间单元的连续3个符号内；也就是说，所有用来调度第一小区的第一小区和第二小区上的需监测的PDCCH候选，在第一小区的一个时间单元的连续3个符号内。这里的3个符号是3个第一子载波间隔对应的3个OFDM符号。
条件1-9，所有用来调度第一小区的第二小区上的搜索空间配置在第二子载波间隔对应的一个时间单元的连续3个符号内。也就是说，所有用来调度第一小区的第二小区上的需监测的PDCCH候选，在第二小区的一个时间单元的连续3个符号内。这里的3个符号是3个第二子载波间隔对应的3个OFDM符号。
本申请中，接入网设备还可以向终端设备发送第四指示信息，第四指示信息用于指示第一方案中是否包括条件1-6至条件1-9中的一项或多项。
本申请中，第二方案可以包括以下至少一项：
条件2-1，第一参数和第二参数是被允许由接入网设备配置的，或者，所述第一参数和所述第二参数是协议预设的。
如果第一参数和第二参数是被允许由接入网设备配置的，接入网设备可以通过无线资源控制(radio resource control，RRC)信令配置第一参数和第二参数中的至少一项的取值。
例如，如果第一参数和第二参数是被允许由接入网设备配置的，接入网设备可以通过第三指示信息向终端设备指示第一参数的取值以及第二参数的取值中的至少一项。
一种实现方式中，如果接入网设备没有配置第一参数或第二参数的取值，那么第一参数或第二参数的取值可以为默认值。另一种实现方式中，第一参数或第二参数的取值不存在对应的默认值，第一参数或第二参数的取值由接入网设备配置。如果接入网设备只指示其中一项，则协议预设了两者之和，例如为1。
如果第一参数和第二参数是被允许由接入网设备配置的，第二方案中，第一参数的取值与第二参数的取值的和为1。本申请中，还可以包括第三参数，第三参数被允许由所述接入网设备配置。接入网设备可以将第一参数的取值配置为等于第三参数的取值，或者第一参数和第三参数作为同一个参数进行配置。本申请中，第一参数采用s1表示，第二参数采用s2表示，第三参数采用α表示，一种实现方式中，s1可以等于α，s2可以等于1-α。
如果第一参数和第二参数是协议预设的，那么第二方案中预设的第一参数和第一方案中预设的第一参数不同，和/或第二方案中预设的第二参数和第一方案中预设的第二参数不同。例如，第一方案中预设的第一参数为1，预设的第二参数为0；第二方案中预设的第一参数为1，预设的第二参数为1，或者第二方案中预设的第一参数为0.5，预设的第二参数为0.5。
条件2-2，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值根据第一数量和第二总数量确定，例如可以为第一数量和第二总数量中的最小值；
举例来说，时间单元为时隙时，如果第二子载波间隔的配置参数为μ2，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值为
Figure PCTCN2022130028-appb-000047
其中，第一数量为
Figure PCTCN2022130028-appb-000048
第二总数量为
Figure PCTCN2022130028-appb-000049
min()为取最小值运算。
条件2-3，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的PDCCH候选中不重叠的CCE的个数的最大值根据第二数量和第四总数量确定，例如可以为第二数量和第四总数量中的最小值。
举例来说，时间单元为时隙时，如果第二子载波间隔的配置参数为μ2，终端设备在第二小区上，在第二子载波间隔对应的一个时间单元上，需监测的PDCCH候选中不重叠的CCE的个数的最大值为
Figure PCTCN2022130028-appb-000050
其中，第二数量为
Figure PCTCN2022130028-appb-000051
第四总数量为
Figure PCTCN2022130028-appb-000052
本申请中，第一方案以及第二方案中的第一参数和第二参数可以用于确定第一总数量、第三总数量、第二总数量和第四总数量，具体确定过程将在后面详细描述。
可选的，S204：接入网设备向终端设备发送第二指示信息，第二指示信息用于指示采用第一方案或第二方案。
其中，如果终端设备通过第一指示信息指示终端设备支持第一方案和第二方案，则接入网设备可以通过第二指示信息指示其中的一种方案，从而使得终端设备确定最终采用哪一种方案。
如果终端设备通过第一指示信息指示终端设备支持第一方案和第二方案，接入网设备也可以不发送第二指示信息，终端设备以及接入网设备默认采用其中的一种方案，该默认的方案可以是协议规定的，也可以是通过其他方式约定的。
如果终端设备通过第一指示信息指示终端设备支持第一方案和第二方案中的一种方案，则接入网设备可以通过第二指示信息指示采用该方案，或者接入网设备也可以不发送第二指示信息，终端设备以及接入网设备默认采用终端设备支持的方案。
S205：接入网设备根据第一方案或第二方案分别确定第一小区和第二小区的搜索空间集的配置。
接入网设备根据第一方案或第二方案，可以确定终端设备需监测的PDCCH候选的个数的最大值以及需监测的PDCCH候选中不重叠的CCE的个数的最大值的至少一项，从而可以终端设备需监测的PDCCH候选的个数的最大值和/或需监测的PDCCH候选中不重叠的CCE的个数的最大值配置相应的搜索空间集，具体的配置过程，本申请并不限定，在此不再赘述。
接入网设备还可以向终端设备发送配置信息，配置信息用于指示第一小区和第二小区的搜索空间集的配置。
可选的，S206：接入网设备向终端设备发送第三指示信息。
第三指示信息还可以用于指示第三参数的取值。
当采用第二方案时，第三指示信息用于指示第二方案中的第一参数的取值以及第二参数的取值中的至少一项。
另外，对于第二方案，实现方式一：接入网设备仅指示一个值，这个值即是第一参数的取值，又是第三参数的取值。
实现方式二：接入网设备独立配置第一参数的取值和第三参数的取值。
实现方式二：接入网设备独立配置第一参数的取值、第二参数的取值和第三参数的取值。
S207：终端设备确定需监测的PDCCH候选的个数的最大值以及需监测PDCCH候选中不重叠的CCE的个数的最大值的至少一项。
在第一小区和第二小区共同调度所述第一小区时，如果终端设备接收到第二指示信息，终端设备可以根据第二指示信息指示的方案确定需监测的PDCCH候选的个数的最大值以及需监测PDCCH候选中不重叠的CCE的个数的最大值的至少一项。如果终端设备没有接收到第二指示信息，终端设备可以根据第一方案和第二方案中默认的方案确定需监测的PDCCH候选的个数的最大值以及需监测PDCCH候选中不重叠的CCE的个数的最大值的至少一项。
如前所述，本申请中，第一方案或第二方案是用来确定在第二小区上，在第二子载波间隔对应的一个时间单元上，终端设备需监测的PDCCH候选的个数的最大值以及需监测PDCCH候选中不重叠的CCE的个数的最大值的至少一项。
终端设备还需要确定在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值以及需监测用来调度第一小区的PDCCH候选中不重叠的CCE的个数的最大值的至少一项。
终端设还需要确定在第二小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值以及需监测用来调度第一小区的PDCCH候选中不重叠的CCE的个数的最大值的至少一项，下面分别进行描述。
假设第一子载波间隔对应μ1，第二子载波间隔对应μ2。以时间单元为时隙为例，那么本申请中涉及到的以下参数可以分别表示为：
第一数量可以表示为
Figure PCTCN2022130028-appb-000053
第二数量可以表示为
Figure PCTCN2022130028-appb-000054
第三数量可以表示为
Figure PCTCN2022130028-appb-000055
第四数量可以表示为
Figure PCTCN2022130028-appb-000056
第一总数量可以表示为
Figure PCTCN2022130028-appb-000057
第三总数量可以表示为
Figure PCTCN2022130028-appb-000058
第二总数量可以表示为
Figure PCTCN2022130028-appb-000059
第四总数量可以表示为
Figure PCTCN2022130028-appb-000060
当第一小区和第二小区共同调度第一小区时，存在以下两种情况：
情况一，在第一小区上，对于自调度：
如果采用第一方案，终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值为第三数量和第一总数量中的最小值乘以第三参数，第三数量为第一子载波间隔对应的时间单元的需监测的PDCCH候选的个数的预设最大值。
举例来说，时间单元为时隙时，那么第三数量可以为在表1中与μ1对应的
Figure PCTCN2022130028-appb-000061
例如，μ1为1，那么第三数量为36。
结合上面的描述，如果采用第一方案，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值满足以下形式：
Figure PCTCN2022130028-appb-000062
α为第三参数，min()为取最小值运算。
如果采用第一方案，终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的PDCCH候选中不重叠的CCE的个数的最大值为第四数量和第二总数量中的最小值乘以第三参数，第四数量为第一子载波间隔对应的时间单元的需监测的PDCCH候 选中不重叠的CCE的个数的预设最大值。
举例来说，时间单元为时隙时，那么第四数量可以为在表2中与μ1对应的。例如，μ1为1，那么第四数量为56。
结合上面的描述，如果采用第一方案，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值满足以下形式：
Figure PCTCN2022130028-appb-000063
如果采用第二方案，终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的PDCCH候选的个数的最大值为第三数量乘以第三参数。
结合上面的描述，如果采用第二方案，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值满足以下形式：
Figure PCTCN2022130028-appb-000064
如果采用第二方案，终端设备在第一小区上，在第一子载波间隔对应的一个时间单元上，需监测的PDCCH候选中不重叠的CCE的个数的最大值为第四数量乘以第三参数。
结合上面的描述，如果采用第二方案，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值满足以下形式：
Figure PCTCN2022130028-appb-000065
情况二，还分为两种实例：
实例一，如果采用第一方案：在第二小区上，在第二子载波间隔对应的一个时间单元上，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值为第一数量；或者，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值可以大于第一数量或者没有上限。
举例来说，时间单元为时隙时，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值为
Figure PCTCN2022130028-appb-000066
例如，μ2为1，那么第一数量为36。或者，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值可以大于
Figure PCTCN2022130028-appb-000067
该最大值可以不根据
Figure PCTCN2022130028-appb-000068
确定。
终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值为第二数量；或者，终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值可以大于第二数量或者没有上限。
举例来说，时间单元为时隙时，终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值为
Figure PCTCN2022130028-appb-000069
例如，μ2为1，那么第二数量为56。或者，该最大值可以大于
Figure PCTCN2022130028-appb-000070
该最大值也可以不根据
Figure PCTCN2022130028-appb-000071
确定。
实例一，如果采用第二方案：在第二小区上，在第二子载波间隔对应的一个时间单元上，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值为第一数量和第二总数量中的最小值。
举例来说，时间单元为时隙时，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值为
Figure PCTCN2022130028-appb-000072
终端设备需监测的用来调度第一小区的PDCCH候选中不重叠的CCE的个数的最大值为第二数量和第四总数量中的最小值。
举例来说，时间单元为时隙时，终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值为
Figure PCTCN2022130028-appb-000073
实例二，如果采用第一方案，在第二小区上，在第一子载波间隔对应的一个时间单元上，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值为第三数量和第一总数量中的最小值乘以1与第三参数的差值。
举例来说，时间单元为时隙时，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值满足以下形式：
Figure PCTCN2022130028-appb-000074
终端设备需监测的用来调度第一小区的PDCCH候选中不重叠的CCE的个数的最大值为第四数量和第二总数量中的最小值乘以1与第三参数的差值。
举例来说，时间单元为时隙时，终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值满足以下形式：
Figure PCTCN2022130028-appb-000075
实例二，如果采用第二方案，在第二小区上，在第一子载波间隔对应的一个时间单元上，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值为第三数量乘以1与第三参数的差值。
举例来说，时间单元为时隙时，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值满足以下形式：
Figure PCTCN2022130028-appb-000076
终端设备需监测的用来调度第一小区的PDCCH候选中不重叠的CCE的个数的最大值为第四数量乘以1与第三参数的差值。
举例来说，时间单元为时隙时，终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值满足以下形式：
Figure PCTCN2022130028-appb-000077
在μ1＜μ2时，因为第一子载波间隔对应的时隙大于第二子载波间隔对应的时隙，所以，在第二小区上，在第二子载波间隔对应的一个时间单元上，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值可以为
Figure PCTCN2022130028-appb-000078
终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值可以满足以下形式：
Figure PCTCN2022130028-appb-000079
网络设备也可以采用终端设备同样的方法，确定终端设备在不同情况下需监测的PDCCH候选的个数的最大值，以及需监测的PDCCH候选中不重叠的CCE的个数的最大值，从而确定第一小区和第二小区相应的搜索空间配置。
进一步的，如前所述，第一方案以及第二方案中的第一参数和第二参数可以用于确定第一总数量、第三总数量、第二总数量和第四总数量，下面分别描述如何确定上述数量。
本申请中，采用第一方案中的第一参数和第二参数确定的第一总数量、第三总数量、第二总数量和第四总数量，可以满足方式一中的描述，或者可以满足方式二中的描述；采用第二方案中的第一参数和第二参数确定的第一总数量、第三总数量、第二总数量和第四总数量，可以满足方式一中的描述，或者可以满足方式二中的描述。
下面描述的方式一至方式四中的“调度小区”，为终端设备接入的小区中，调度本小区的小区，或者调度其它小区的小区。
方式一：
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子 载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的PDCCH候选的个数，和在第二小区上，终端设备需监测的调度第一小区的PDCCH候选的个数之和的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的PDCCH候选中不重叠的CCE的个数，和在第二小区上，终端设备需监测的调度第一小区的PDCCH候选中不重叠的CCE的个数之和的最大值为第三总数量。
举例来说，时间单元为时隙时，如果第一子载波间隔的配置参数为μ1，那么第一总数量
Figure PCTCN2022130028-appb-000080
可以满足以下形式：
Figure PCTCN2022130028-appb-000081
这里，公式中的对应于所有子载波间隔的小区个数包含对应于μ1的小区个数和对应于μ2的小区个数。
其中，对应于μ1的小区个数可以被认为是调度小区的子载波间隔对应μ1的被调小区的个数。这时，在对应于μ1的小区个数中，第一小区计数为第一参数，在对应于μ2的小区个数中，第一小区计数为第二参数。
对应于μ1的小区个数也可以被认为是子载波间隔对应μ1的调度小区的个数，这时，在对应于μ1的小区个数中，第一小区计数为第一参数，或者说第一小区作为自己的调度小区来说计数为第一参数；在对应于μ2的小区个数中，第二小区作为调度第一小区的调度小区来说计数为第二参数。第二小区作为调度第一小区的调度小区来说计数为第二参数，意味着，第二小区作为自调度或者调度其他小区的调度小区来说，还会进行其它计数。UE能力表示终端设备能够支持同时进行盲检测的小区个数，可以通过参数pdcch-BlindDetectionCA等形式上报。
时间单元为时隙时，如果第一子载波间隔的配置参数为μ1，那么第三总数量
Figure PCTCN2022130028-appb-000082
可以满足以下形式：
Figure PCTCN2022130028-appb-000083
这里，公式中的对应于所有子载波间隔的小区个数包含对应于μ1的小区个数和对应于μ2的小区个数。
其中，对应于μ1的小区个数可以被认为是调度小区的子载波间隔对应μ1的被调小区的个数。这时，在对应于μ1的小区个数中，第一小区计数为第一参数，在对应于μ2的小区个数中，第一小区计数为第二参数。
对应于μ1的小区个数也可以被认为是子载波间隔对应μ1的调度小区的个数，这时，在对应于μ1的小区个数中，第一小区计数为第一参数，或者说第一小区作为自己的调度小区来说计数为第一参数；在对应于μ2的小区个数中，第二小区作为调度第一小区的调度小区来说计数为第二参数。第二小区作为调度第一小区的调度小区来说计数为第二参数，意味着，第二小区作为自调度或者调度其他小区的调度小区来说，还会进行其它计数。UE能力表示终端设备能够支持同时进行盲检测的小区个数，可以通过参数pdcch-BlindDetectionCA等形式上报。
方式二：
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的PDCCH候选的个数的 最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值。
举例来说，时间单元为时隙时，如果第一子载波间隔的配置参数为μ1，那么第一总数量
Figure PCTCN2022130028-appb-000084
可以满足以下形式：
Figure PCTCN2022130028-appb-000085
这里，公式中的对应于所有子载波间隔的小区个数包含对应于μ1的小区个数和对应于μ2的小区个数。
其中，对应于μ1的小区个数可以被认为是调度小区的子载波间隔对应μ1的被调小区的个数。这时，在对应于μ1的小区个数中，第一小区计数为第一参数，在对应于μ2的小区个数中，第一小区计数为第二参数。
对应于μ1的小区个数也可以被认为是子载波间隔对应μ1的调度小区的个数，这时，在对应于μ1的小区个数中，第一小区计数为第一参数，或者说第一小区作为自己的调度小区来说计数为第一参数；在对应于μ2的小区个数中，第二小区作为调度第一小区的调度小区来说计数为第二参数。第二小区作为调度第一小区的调度小区来说计数为第二参数，意味着，第二小区作为自调度或者调度其他小区的调度小区来说，还会进行其它计数。UE能力表示终端设备能够支持同时进行盲检测的小区个数，可以通过参数pdcch-BlindDetectionCA等形式上报。
时间单元为时隙时，如果第一子载波间隔的配置参数为μ1，那么第三总数量
Figure PCTCN2022130028-appb-000086
可以满足以下形式：
Figure PCTCN2022130028-appb-000087
这里，公式中的对应于所有子载波间隔的小区个数包含对应于μ1的小区个数和对应于μ2的小区个数。
其中，对应于μ1的小区个数可以被认为是调度小区的子载波间隔对应μ1的被调小区的个数。这时，在对应于μ1的小区个数中，第一小区计数为第一参数，在对应于μ2的小区个数中，第一小区计数为第二参数。
对应于μ1的小区个数也可以被认为是子载波间隔对应μ1的调度小区的个数，这时，在对应于μ1的小区个数中，第一小区计数为第一参数，或者说第一小区作为自己的调度小区来说计数为第一参数；在对应于μ2的小区个数中，第二小区作为调度第一小区的调度小区来说计数为第二参数。第二小区作为调度第一小区的调度小区来说计数为第二参数，意味着，第二小区作为自调度或者调度其他小区的调度小区来说，还会进行其它计数。UE能力表示终端设备能够支持同时进行盲检测的小区个数，可以通过参数pdcch-BlindDetectionCA等形式上报。
举例来说，假设有6个第一子载波间隔的小区，其中包括第一小区，其它5个小区为自调度小区；有2个第二子载波间隔的小区，其中包括第二小区，另一个小区为自调度小区，第二小区也为自调度小区。第一子载波间隔对应μ1，第二子载波间隔对应μ2。
如果采用第一方案，s1＝1，s2＝0。第一总数量和第三总数量满足方式二时，在计算第一总数量和第三总数量时，对应于所有子载波间隔的小区个数为8＝6+2。
对应于μ1的小区个数为6＝5+1，即对应于第一子载波间隔的小区个数为6。其中，1表示s1，表示在调度小区的子载波间隔为μ1的被调小区计数中，第一小区计数为1，或者，表示在调度小区的子载波间隔为μ1的调度小区计数中，第一小区计数为1。
对应于μ2的小区个数为2＝2+0，即对应于第二子载波间隔的小区个数为2。其中，0表示s2，表示在调度小区的子载波间隔为μ2的被调小区计数中，第一小区计数为0，或者，表示在调度小区的子载波间隔为μ2的调度小区计数中，第二小区计数为0，更进一步说，是第二小区作为第一小区的调度小区时计数为0。
举例来说，假设对应于所有子载波间隔的小区个数为C，其中包括C1个第一子载波间隔的小区，C1个第一子载波间隔的小区中包括第一小区，其它小区为自调度小区；对应于所有子载波间隔的小区个数为C还包括C2个第二子载波间隔的小区，C2个第二子载波间隔的小区中包括第二小区，其它小区为自调度小区，第二小区也为自调度小区。第一子载波间隔对应μ1，第二子载波间隔对应μ2。
第一总数量和第三总数量满足方式二时，在计算第一总数量和第三总数量时，对应于所有子载波间隔的小区个数为C1+C2。
对应于μ1的小区个数为(C1-1)+s1，即对应于第一子载波间隔的小区个数为(C1-1)+s1。其中，s1表示在调度小区的子载波间隔为μ1的被调小区计数中，第一小区计数为s1，或者，表示在调度小区的子载波间隔为μ1的调度小区计数中，第一小区计数为s1。
此时，第一总数量
Figure PCTCN2022130028-appb-000088
可以表示为：
Figure PCTCN2022130028-appb-000089
第三总数量
Figure PCTCN2022130028-appb-000090
可以表示为：
Figure PCTCN2022130028-appb-000091
本申请中，第一方案对应的第二总数量和第四总数量满以下任一项，第二方案对应的第二总数量和第四总数量满以下任一项。也就是说，采用第一方案中的第一参数和第二参数确定的第二总数量和第四总数量，可以满足方式三中的描述，或者可以满足方式四中的描述；采用第二方案中的第一参数和第二参数确定的第二总数量和第四总数量，可以满足方式三中的描述，或者可以满足方式四中的描述。
方式三：
第二总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，终端设备需监测的调度第一小区的PDCCH候选外，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的PDCCH候选的个数的最大值；第四总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，终端设备需监测的调度第一小区的PDCCH候选中不重叠的CCE外，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值。
举例来说，时间单元为时隙时，如果第二子载波间隔的配置参数为μ2，那么第二总数量
Figure PCTCN2022130028-appb-000092
可以满足以下形式：
Figure PCTCN2022130028-appb-000093
这里，公式中的对应于所有子载波间隔的小区个数包含对应于μ1的小区个数和对应于μ2的小区个数。
其中，对应于μ1的小区个数可以被认为是调度小区的子载波间隔对应μ1的被调小区的个数。这时，在对应于μ1的小区个数中，第一小区计数为第一参数，在对应于μ2的小区个数中，第一小区计数为第二参数。
对应于μ1的小区个数也可以被认为是子载波间隔对应μ1的调度小区的个数，这时，在对应于μ1的小区个数中，第一小区计数为第一参数，或者说第一小区作为自己的调度小区来说计数为第一参数；在对应于μ2的小区个数中，第二小区作为调度第一小区的调度小区来说计数为第二参数。第二小区作为调度第一小区的调度小区来说计数为第二参数，意味着，第二小区作为自调度或者调度其他小区的调度小区来说，还会进行其它计数。UE能力表示终端设备能够支持同时进行盲检测的小区个数，可以通过参数pdcch-BlindDetectionCA等形式上报。
时间单元为时隙时，如果第二子载波间隔的配置参数为μ2，那么第四总数量
Figure PCTCN2022130028-appb-000094
可以满足以下形式：
Figure PCTCN2022130028-appb-000095
这里，公式中的对应于所有子载波间隔的小区个数包含对应于μ1的小区个数和对应于μ2的小区个数。
其中，对应于μ1的小区个数可以被认为是调度小区的子载波间隔对应μ1的被调小区的个数。这时，在对应于μ1的小区个数中，第一小区计数为第一参数，在对应于μ2的小区个数中，第一小区计数为第二参数。
对应于μ1的小区个数也可以被认为是子载波间隔对应μ1的调度小区的个数，这时，在对应于μ1的小区个数中，第一小区计数为第一参数，或者说第一小区作为自己的调度小区来说计数为第一参数；在对应于μ2的小区个数中，第二小区作为调度第一小区的调度小区来说计数为第二参数。第二小区作为调度第一小区的调度小区来说计数为第二参数，意味着，第二小区作为自调度或者调度其他小区的调度小区来说，还会进行其它计数。UE能力表示终端设备能够支持同时进行盲检测的小区个数，可以通过参数pdcch-BlindDetectionCA等形式上报。
方式四：
第二总数量是指在第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的PDCCH候选的个数的最大值；第四总数量是指在第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的PDCCH候选中不重叠的CCE的个数的最大值。
举例来说，时间单元为时隙时，如果第二子载波间隔的配置参数为μ2，那么第二总数量
Figure PCTCN2022130028-appb-000096
可以满足以下形式：
Figure PCTCN2022130028-appb-000097
这里，公式中的对应于所有子载波间隔的小区个数包含对应于μ1的小区个数和对应于μ2的小区个数。
其中，对应于μ1的小区个数可以被认为是调度小区的子载波间隔对应μ1的被调小区的个数。这时，在对应于μ1的小区个数中，第一小区计数为第一参数，在对应于μ2的小区个数中，第一小区计数为第二参数。
对应于μ1的小区个数也可以被认为是子载波间隔对应μ1的调度小区的个数，这时，在对应于μ1的小区个数中，第一小区计数为第一参数，或者说第一小区作为自己的调度小区来说计数为第一参数；在对应于μ2的小区个数中，第二小区作为调度第一小区的调度小区来说计数为第二参数。第二小区作为调度第一小区的调度小区来说计数为第二参数，意味着，第二小区作为自调度或者调度其他小区的调度小区来说，还会进行其它计数。
UE能力表示终端设备能够支持同时进行盲检测的小区个数，可以通过参数pdcch-BlindDetectionCA等形式上报。
时间单元为时隙时，如果第二子载波间隔的配置参数为μ2，那么第四总数量
Figure PCTCN2022130028-appb-000098
可以满足以下形式：
Figure PCTCN2022130028-appb-000099
这里，公式中的对应于所有子载波间隔的小区个数包含对应于μ1的小区个数和对应于μ2的小区个数。
其中，对应于μ1的小区个数可以被认为是调度小区的子载波间隔对应μ1的被调小区的个数。这时，在对应于μ1的小区个数中，第一小区计数为第一参数，在对应于μ2的小区个数中，第一小区计数为第二参数。
对应于μ1的小区个数也可以被认为是子载波间隔对应μ1的调度小区的个数，这时，在对应于μ1的小区个数中，第一小区计数为第一参数，或者说第一小区作为自己的调度小区来说计数为第一参数；在对应于μ2的小区个数中，第二小区作为调度第一小区的调度小区来说计数为第二参数。第二小区作为调度第一小区的调度小区来说计数为第二参数，意味着，第二小区作为自调度或者调度其他小区的调度小区来说，还会进行其它计数。
UE能力表示终端设备能够支持同时进行盲检测的小区个数，可以通过参数pdcch-BlindDetectionCA等形式上报。
举例来说，假设对应于所有子载波间隔的小区个数为C，其中包括C1个第一子载波间隔的小区，C1个第一子载波间隔的小区中包括第一小区，其它小区为自调度小区；对应于所有子载波间隔的小区个数为C还包括C2个第二子载波间隔的小区，C2个第二子载波间隔的小区中包括第二小区，其它小区为自调度小区，第二小区也为自调度小区。第一子载波间隔对应μ1，第二子载波间隔对应μ2。
第二总数量和第四总数量满足方式四时，在计算第二总数量和第四总数量时，对应于所有子载波间隔的小区个数为C1+C2。
对应于μ2的小区个数为C2+s2，其中，s2表示在调度小区的子载波间隔为μ2的被调小区计数中，第一小区计数为s2，或者，表示在调度小区的子载波间隔为μ2的调度小区计数中，第二小区计数为s2，更进一步说，是第二小区作为第一小区的调度小区时计数为s2。
此时，第二总数量
Figure PCTCN2022130028-appb-000100
可以表示为：
Figure PCTCN2022130028-appb-000101
第四总数量
Figure PCTCN2022130028-appb-000102
可以表示为：
Figure PCTCN2022130028-appb-000103
本申请中，第一方案可以对应第一场景，即在第一场景下使用第一方案；第二方案可以对应第二场景，即在第二场景下使用第二方案。
第一场景：
第一小区和第二小区，这两个小区的控制信道接收使用的都是第一子载波间隔对应的BD/CCE能力。
第一小区的子载波间隔对应μ1，第二小区的子载波间隔对应μ2。因为两个小区的控制信道接收实际使用的是第一子载波间隔对应的BD/CCE能力，且两个小区调度的是一个子载波间隔为第一子载波间隔的小区，即第一小区，所以在求子载波间隔对应μ1的所有小区的BD/CCE上限时，s1取值为1；在求子载波间隔对应μ2的所有小区的BD/CCE上限时，s2取值为0，也就是实质上没有用到第二子载波间隔对应的BD/CCE能力，即“s1＝1，s2＝0”。
而在确定第二小区的子载波对应的一个时间单元上，终端设备的BD/CCE监测上限时，就不需要考虑子载波间隔对应μ2的所有小区的BD/CCE上限
Figure PCTCN2022130028-appb-000104
因此在第二小区上，在第二子载波间隔对应的一个时间单元上，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值，以及终端设备需监测的用来调度第一小区的PDCCH候选中的不重叠的CCE的个数的最大值，可以采用第一方案确定。
在第一方案中，如果进一步，有一种能力的终端设备，需要接入网设备保证每个时间单元中，配置的搜索空间集都在相同的连续的3个OFDM符号内，那么就需要进一步限制第一方案中是否包括条件1-4至条件1-6中的一项或多项。
如果第二小区和第一小区的子载波间不同，例如第二小区的子载波间为30KHz，第一小区的子载波间为15Khz，那么在第一小区的3个符号内，对应第二小区的6个符号，终端设备在第二小区最多就需要存储6个符号的PDCCH，以进行PDCCH监测。如果限制第二小区的搜索空间在第二小区的3个符号上，即限制在30KHz对应的3个符号上，那么终端设备在每个小区只需要存储3个符号的信号，以进行PDCCH监测，从而节省了终端设备的存储空间。
第二场景：
第一小区和第二小区，在这两个小区的子载波间隔不同时，两个小区的控制信道接收用不同子载波间隔的监测能力实现，即对应不同子载波间隔对应的BD/CCE能力。
第一小区的子载波间隔对应μ1，第二小区的子载波间隔对应μ2。因为两个小区的控制信道接收实际使用不同子载波间隔的监测能力实现，所以在求子载波间隔对应μ1的所有小区的BD/CCE上限时的取值时，s1应该对应于在第一小区上配置的BD/CCE个数，和在求子载波间隔对应μ2的所有小区的BD/CCE上限时，s2应该对应于在第二小区上配置的BD/CCE个数，即“s1由高层配置，s1+s2＝1(α和s1独立配置)，或者s1＝α，s2＝1-α”。
而在确定第二小区的子载波对应的一个时间单元上，终端设备的BD/CCE监测上限时，就需要考虑子载波间隔对应μ2的所有小区的BD/CCE上限，因此在第二小区上，在第二子载波间隔对应的一个时间单元上，终端设备需监测的用来调度第一小区的PDCCH候选的个数的最大值，以及终端设备需监测的用来调度第一小区的PDCCH候选中的不重叠的CCE的个数的最大值，可以采用第二方案确定。
上述本申请提供的实施例中，分别从各个设备之间交互的角度对本申请实施例提供的方法进行了介绍。为了实现上述本申请实施例提供的方法中的各功能，接入网设备或终端 设备可以包括硬件结构和/或软件模块，以硬件结构、软件模块、或硬件结构加软件模块的形式来实现上述各功能。上述各功能中的某个功能以硬件结构、软件模块、还是硬件结构加软件模块的方式来执行，取决于技术方案的特定应用和设计约束条件。
本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。另外，在本申请各个实施例中的各功能模块可以集成在一个处理器中，也可以是单独物理存在，也可以两个或两个以上模块集成在一个模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。
与上述构思相同，如图3所示，本申请实施例还提供一种通信装置300用于实现上述方法中接入网设备或终端设备的功能。该通信装置的形式不受限，可以是硬件结构、软件模块、或硬件结构加软件模块。例如，该装置可以为软件模块或者芯片系统。本申请实施例中，芯片系统可以由芯片构成，也可以包含芯片和其他分立器件。该装置300可以包括：处理单元301和通信单元302。
本申请实施例中，通信单元也可以称为收发单元，可以包括发送单元和/或接收单元，分别用于执行上文方法实施例中接入网设备或终端设备执行的发送和接收的步骤。
以下，结合图3至图4详细说明本申请实施例提供的通信装置。应理解，装置实施例的描述与方法实施例的描述相互对应，因此，未详细描述的内容可以参见上文方法实施例，为了简洁，这里不再赘述。
通信单元也可以称为收发装置。处理单元也可以称为处理模块、或处理装置等。可选的，可以将通信单元302中用于实现接收功能的器件视为接收单元，将通信单元302中用于实现发送功能的器件视为发送单元，即通信单元302包括接收单元和发送单元。通信单元有时可以实现为管脚、收发机、收发器、或收发电路等。处理单元有时可以实现为处理器、或处理单板等。接收单元有时可以实现为管脚、接收机、接收器或接收电路等。发送单元有时可以实现为管脚、发射机、发射器或者发射电路等。
通信装置300执行上面实施例中图2所示的流程中终端设备的功能时：
处理单元，用于确定第一指示信息；
通信单元，用于向接入网设备发送第一指示信息；
其中，第一指示信息用于从第一方案和第二方案中指示终端设备支持的一种或两种；第一方案和第二方案均用于确定在第一小区和第二小区共同调度第一小区时，终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；
其中，第一方案包括：第一参数和第二参数是协议预设的；
第二方案包括：第一参数和第二参数是被允许由接入网设备配置的；或者，所述第二方案包括：所述第一参数和所述第二参数是协议预设的，所述第二方案中预设的所述第一参数和所述第一方案中预设的所述第一参数不同，和/或所述第二方案中预设的所述第二参数和所述第一方案中预设的所述第二参数不同；
第一参数和第二参数用于确定第一总数量、第三总数量、第二总数量和第四总数量；
第一方案对应的第一总数量和第三总数量满以下任一项，第二方案对应的第一总数量和第三总数量满以下任一项：
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选 的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选的个数之和的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数之和的最大值；
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
第一方案对应的第二总数量和第四总数量满以下任一项，第二方案对应的第二总数量和第四总数量满以下任一项：
第二总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选外，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第四总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选中不重叠的控制信道元素外，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
第二总数量是指在第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第四总数量是指在第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；其中，第一小区的子载波间隔等于第一子载波间隔，第二小区的子载波间隔等于第二子载波间隔。
以上只是示例，处理单元301和通信单元302还可以执行其他功能，更详细的描述可以参考图2所示的方法实施例中与终端设备相关描述，这里不加赘述。
通信装置300执行上面实施例中图2所示的流程中接入网设备的功能时：
通信单元，用于接收来自终端设备的第一指示信息；其中，第一指示信息用于从第一方案和第二方案中指示终端设备支持的一种或两种；
处理单元，用于根据第一方案或第二方案分别确定第一小区和第二小区的搜索空间集的配置；其中，第一方案和第二方案均用于确定在第一小区和第二小区共同调度第一小区时，终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；
其中，第一方案和第二方案均用于确定在第一小区和第二小区共同调度第一小区时，终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；
其中，第一方案包括：第一参数和第二参数是协议预设的；
第二方案包括：第一参数和第二参数是被允许由接入网设备配置的；或者，所述第二方案包括：所述第一参数和所述第二参数是协议预设的，所述第二方案中预设的所述第一 参数和所述第一方案中预设的所述第一参数不同，和/或所述第二方案中预设的所述第二参数和所述第一方案中预设的所述第二参数不同；
第一参数和第二参数用于确定第一总数量、第三总数量、第二总数量和第四总数量；第一方案对应的第一总数量和第三总数量满以下任一项，第二方案对应的第一总数量和第三总数量满以下任一项：
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选的个数之和的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数，和在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数之和的最大值；
第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第三总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第一子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
第一方案对应的第二总数量和第四总数量满以下任一项，第二方案对应的第二总数量和第四总数量满以下任一项：
第二总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选外，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第四总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，终端设备需监测的调度第一小区的物理下行控制信道候选中不重叠的控制信道元素外，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
第二总数量是指在第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选的个数的最大值；第四总数量是指在第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为第二子载波间隔的所有调度小区上，终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；其中，第一小区的子载波间隔等于第一子载波间隔，第二小区的子载波间隔等于第二子载波间隔。
以上只是示例，处理单元301和通信单元302还可以执行其他功能，更详细的描述可以参考图2所示的方法实施例中与接入网设备相关描述，这里不加赘述。
如图4所示为本申请实施例提供的装置400，图4所示的装置可以为图3所示的装置的一种硬件电路的实现方式。该通信装置可适用于前面所示出的流程图中，执行上述方法实施例中终端设备或者接入网设备的功能。为了便于说明，图4仅示出了该通信装置的主要部件。
如图4所示，通信装置400包括处理器410和接口电路420。处理器410和接口电路420之间相互耦合。可以理解的是，接口电路420可以为收发器、管脚、接口电路或输入 输出接口。可选的，通信装置400还可以包括存储器430，用于存储处理器410执行的指令或存储处理器410运行指令所需要的输入数据或存储处理器410运行指令后产生的数据。可选地，存储器430的部分或全部可以位于处理器410中。
当通信装置400用于实现图2所示的方法时，处理器410用于实现上述处理单元301的功能，接口电路420用于实现上述通信单元302的功能。
当上述通信装置为应用于终端设备的芯片时，该终端设备芯片实现上述方法实施例中终端设备的功能。该终端设备芯片从终端设备中的其它模块(如射频模块或天线)接收信息，该信息是接入网设备发送给终端设备的；或者，该终端设备芯片向终端设备中的其它模块(如射频模块或天线)发送信息，该信息是终端设备发送给接入网设备的。
上面的流程中，以终端设备发送第一指示信息为例进行描述。本申请中，终端设备也可以不发送第一指示信息，在该实现方式中，具体采用第一方案还是第二方案可以根据其他参数的配置确定，例如根据第一参数和第二参数的配置确定，下面详细描述。
如图5所述，为本申请实施例提供的一种通信方法流程示意图。该方法包括：
S501：终端设备根据第一方案或第二方案，确定需监测的PDCCH候选的个数的最大值以及需监测PDCCH候选中不重叠的CCE的个数的最大值的至少一项。
S502：接入网设备根据第一方案或第二方案分别确定第一小区和第二小区的搜索空间集的配置。
第一方案或第二方案的具体内容可以参考图2流程中相关的描述，在此不再赘述。
具体采用第一方案还是第二方案，终端设备和接入网设备可以采用相同的方法，具体的：
满足第一条件时，终端设备根据第一方案，确定需监测的PDCCH候选的个数的最大值以及需监测PDCCH候选中不重叠的CCE的个数的最大值的至少一项；接入网设备根据第一方案分别确定第一小区和第二小区的搜索空间集的配置；
满足第二条件时，终端设备根据第二方案，确定需监测的PDCCH候选的个数的最大值以及需监测PDCCH候选中不重叠的CCE的个数的最大值的至少一项；接入网设备根据第二方案分别确定第一小区和第二小区的搜索空间集的配置。
第一种可能的实现方式中，第一条件可以包括：第一参数的取值为1，第二参数的取值为0；第二条件可以包括：第一参数的取值不为1，第二参数的取值不为0。
第二种可能的实现方式中，第一条件可以包括：第一参数和第二参数是预设的，且第一参数的预设取值为1，第二参数的预设取值为0；第二条件可以包括：第一参数和第二参数中的至少一项是被允许由接入网设备配置的。
其中，接入网设备可以通过RRC信令配置第一参数和第二参数中的至少一项，即接入网设备可以通过RRC信令配置第一参数或第二参数，也可以通过RRC信令配置第一参数和第二参数。
第三种可能的实现方式中，第一条件可以包括：接入网设备没有配置第一参数和第二参数；第二条件可以包括：接入网设备配置了第一参数和第二参数中的至少一项。
其中，接入网设备配置了第一参数和第二参数中的至少一项，即接入网设备可以通过RRC信令配置第一参数或第二参数，也可以通过RRC信令配置第一参数和第二参数。
接入网设备也可以通过其他方式配置第一参数和第二参数中的至少一项，本申请对此并不限定。
第四种可能的实现方式中，第一条件可以包括：第二参数的取值为0；第二条件可以包括：第二参数的取值不为0。
S501和S502的具体实现方式，可以参考图2流程中相关的描述，在此不再赘述。
本领域内的技术人员应明白，本申请的实施例可提供为方法、系统、或计算机程序产品。因此，本申请可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本申请可采用在一个或多个其中包含有计算机可用程序代码的计算机可用存储介质(包括但不限于磁盘存储器、光学存储器等)上实施的计算机程序产品的形式。
本申请是参照根据本申请的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
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 (25)

  1. 一种通信方法，其特征在于，包括：
    终端设备确定第一指示信息；
    所述终端设备向接入网设备发送所述第一指示信息；
    其中，所述第一指示信息用于从第一方案和第二方案中指示所述终端设备支持的一种或两种；所述第一方案和所述第二方案均用于确定在第一小区和第二小区共同调度所述第一小区时，所述终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；
    其中，所述第一方案包括：第一参数和第二参数是协议预设的；
    所述第二方案包括：所述第一参数和所述第二参数是被允许由所述接入网设备配置的；或者，所述第二方案包括：所述第一参数和所述第二参数是协议预设的，所述第二方案中预设的所述第一参数和所述第一方案中预设的所述第一参数不同，和/或所述第二方案中预设的所述第二参数和所述第一方案中预设的所述第二参数不同；
    所述第一参数和所述第二参数用于确定第一总数量、第三总数量、第二总数量和第四总数量；
    所述第一方案对应的第一总数量和第三总数量满以下任一项，所述第二方案对应的第一总数量和第三总数量满以下任一项：
    所述第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第一子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数，和在所述第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选的个数之和的最大值；所述第三总数量是指在所述第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第一子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数，和在所述第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数之和的最大值；
    所述第一总数量是指在所述第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第一子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数的最大值；所述第三总数量是指在所述第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第一子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
    所述第一方案对应的第二总数量和第四总数量满以下任一项，所述第二方案对应的第二总数量和第四总数量满以下任一项：
    所述第二总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选外，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数的最大值；所述第四总数量是指在所述第二子载波间隔对应的一个时间单元上，除在第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选中不重叠的控制信道元素外，在激活下行带宽部分的子载波间隔为所述第二子载波 间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
    所述第二总数量是指在所述第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数的最大值；所述第四总数量是指在所述第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
    其中，所述第一小区的子载波间隔等于所述第一子载波间隔，所述第二小区的子载波间隔等于所述第二子载波间隔。
  2. 根据权利要求1所述的方法，其特征在于，所述第一方案还包括以下至少一项：
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值根据第一数量确定，所述第一数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值不根据第一数量确定，所述第一数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值可以大于第一数量，所述第一数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值根据第二数量确定，所述第二数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值不根据第二数量确定，所述第二数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值可以大于第二数量，所述第二数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
    所有用来调度所述第一小区的所述第二小区上的搜索空间配置在所述第一子载波间隔对应的一个时间单元的连续3个符号内；
    所有用来调度所述第一小区的所述第一小区和所述第二小区上的搜索空间配置在所述第一子载波间隔对应的一个时间单元的连续3个符号内；
    所有用来调度所述第一小区的所述第二小区上的搜索空间配置在所述第二子载波间 隔对应的一个时间单元的连续3个符号内。
  3. 根据权利要求1或2所述的方法，其特征在于，所述第二方案还包括以下至少一项：
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值根据第一数量和所述第二总数量确定，所述第一数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值根据第二数量和所述第四总数量确定，所述第二数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
  4. 根据权利要求1至3任一所述的方法，其特征在于，所述第一方案中，所述第一参数的预设取值为1，所述第二参数的预设取值为0。
  5. 根据权利要求1至4任一所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收来自所述接入网设备的第三指示信息，所述第三指示信息用于指示所述第二方案中的第一参数的取值以及第二参数的取值中的至少一项。
  6. 根据权利要求1至5任一所述的方法，其特征在于，所述第二方案中，所述第一参数的取值与所述第二参数的取值的和为1。
  7. 根据权利要求1至6任一所述的方法，其特征在于，
    所述终端设备在所述第一小区上，在所述第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量和所述第一总数量中的最小值乘以第三参数，所述第三数量为所述第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；所述第三参数被允许由所述接入网设备配置；
    所述终端设备在所述第一小区上，在所述第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量和所述第二总数量中的最小值乘以第三参数，所述第四数量为所述第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
  8. 根据权利要求1至7任一所述的方法，其特征在于，
    所述终端设备在所述第二小区上，在所述第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量和所述第一总数量中的最小值乘以1与第三参数的差值，所述第三数量为所述第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；所述第三参数被允许由所述接入网设备配置；
    所述终端设备在所述第二小区上，在所述第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量和所述第二总数量中的最小值乘以1与第三参数的差值，所述第四数量为所述第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
  9. 根据权利要求1至8任一所述的方法，其特征在于，所述方法还包括：
    所述终端设备接收来自所述接入网设备的第二指示信息，所述第二指示信息用于指示采用所述第一方案或所述第二方案。
  10. 根据权利要求9所述的方法，其特征在于，所述方法还包括：
    在第一小区和第二小区共同调度所述第一小区时，所述终端设备根据所述第二指示信息指示的方案确定需监测的物理下行控制信道候选的个数的最大值以及需监测物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项。
  11. 一种通信方法，其特征在于，包括：
    接入网设备接收来自终端设备的第一指示信息；其中，所述第一指示信息用于从第一方案和第二方案中指示所述终端设备支持的一种或两种；
    所述接入网设备根据所述第一方案或所述第二方案分别确定所述第一小区和所述第二小区的搜索空间集的配置；
    其中，所述第一方案和所述第二方案均用于确定在第一小区和第二小区共同调度所述第一小区时，所述终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；
    其中，所述第一方案和所述第二方案均用于确定在第一小区和第二小区共同调度所述第一小区时，所述终端设备需监测的物理下行控制信道候选的个数的最大值以及需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值的至少一项；
    其中，所述第一方案包括：第一参数和第二参数是协议预设的；
    所述第二方案包括：所述第一参数和所述第二参数是被允许由所述接入网设备配置的；或者，所述第二方案包括：所述第一参数和所述第二参数是协议预设的，所述第二方案中预设的所述第一参数和所述第一方案中预设的所述第一参数不同，和/或所述第二方案中预设的所述第二参数和所述第一方案中预设的所述第二参数不同；
    所述第一参数和所述第二参数用于确定第一总数量、第三总数量、第二总数量和第四总数量；
    所述第一方案对应的第一总数量和第三总数量满以下任一项，所述第二方案对应的第一总数量和第三总数量满以下任一项：
    所述第一总数量是指在第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第一子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数，和在所述第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选的个数之和的最大值；所述第三总数量是指在所述第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第一子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数，和在所述第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数之和的最大值；
    所述第一总数量是指在所述第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第一子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数的最大值；所述第三总数量是指在所述第一子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第一子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
    所述第一方案对应的第二总数量和第四总数量满以下任一项，所述第二方案对应的第二总数量和第四总数量满以下任一项：
    所述第二总数量是指在第二子载波间隔对应的一个时间单元上，除在第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选外，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数的最大值；所述第四总数量是指在所述第二子载波间隔对应的一个时间单元上，除在第二小区上，所述终端设备需监测的调度所述第一小区的物理下行控制信道候选中不重叠的控制信道元素外，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
    所述第二总数量是指在所述第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选的个数的最大值；所述第四总数量是指在所述第二子载波间隔对应的一个时间单元上，在激活下行带宽部分的子载波间隔为所述第二子载波间隔的所有调度小区上，所述终端设备需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值；
    其中，所述第一小区的子载波间隔等于所述第一子载波间隔，所述第二小区的子载波间隔等于所述第二子载波间隔。
  12. 根据权利要求11所述的方法，其特征在于，所述第一方案还包括以下至少一项：
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值根据第一数量确定，所述第一数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值不根据第一数量确定，所述第一数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值可以大于第一数量，所述第一数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值根据第二数量确定，所述第二数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值不根据第二数量确定，所述第二数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需 监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值可以大于第二数量，所述第二数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值；
    所有用来调度所述第一小区的所述第二小区上的搜索空间配置在所述第一子载波间隔对应的一个时间单元的连续3个符号内；
    所有用来调度所述第一小区的所述第一小区和所述第二小区上的搜索空间配置在所述第一子载波间隔对应的一个时间单元的连续3个符号内；
    所有用来调度所述第一小区的所述第二小区上的搜索空间配置在所述第二子载波间隔对应的一个时间单元的连续3个符号内。
  13. 根据权利要求11或12所述的方法，其特征在于，所述第二方案还包括以下至少一项：
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值根据第一数量和所述第二总数量确定，所述第一数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；
    所述终端设备在所述第二小区上，在所述第二子载波间隔对应的一个时间单元上，需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值根据第二数量和所述第四总数量确定，所述第二数量为所述第二子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
  14. 根据权利要求11至13任一所述的方法，其特征在于，所述第一方案中，所述第一参数的预设取值为1，所述第二参数的预设取值为0。
  15. 根据权利要求11至14任一所述的方法，其特征在于，所述方法还包括：
    所述接入网设备向所述终端设备发送第三指示信息，所述第三指示信息用于指示所述第二方案中的第一参数的取值以及第二参数的取值中的至少一项。
  16. 根据权利要求11至15任一所述的方法，其特征在于，所述第二方案中，所述第一参数的取值与所述第二参数的取值的和为1。
  17. 根据权利要求11至16任一所述的方法，其特征在于，
    所述终端设备在所述第一小区上，在所述第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量和所述第一总数量中的最小值乘以第三参数，所述第三数量为所述第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；所述第三参数被允许由所述接入网设备配置；
    所述终端设备在所述第一小区上，在所述第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量和所述第二总数量中的最小值乘以第三参数，所述第四数量为所述第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
  18. 根据权利要求11至17任一所述的方法，其特征在于，
    所述终端设备在所述第二小区上，在所述第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选的个数的最大值为第三数量和所述第 一总数量中的最小值乘以1与第三参数的差值，所述第三数量为所述第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选的个数的预设最大值；所述第三参数被允许由所述接入网设备配置；
    所述终端设备在所述第二小区上，在所述第一子载波间隔对应的一个时间单元上，需监测的用来调度第一小区的物理下行控制信道候选中不重叠的控制信道元素的个数的最大值为第四数量和所述第二总数量中的最小值乘以1与第三参数的差值，所述第四数量为所述第一子载波间隔对应的时间单元的需监测的物理下行控制信道候选中不重叠的控制信道元素的个数的预设最大值。
  19. 根据权利要求11至18任一所述的方法，其特征在于，所述方法还包括：
    所述接入网设备向所述终端设备发送第二指示信息，所述第二指示信息用于指示采用所述第一方案或所述第二方案。
  20. 一种通信装置，其特征在于，包括用于执行如权利要求1-10中任一项所述的方法的单元。
  21. 一种通信装置，其特征在于，包括处理器和存储器，所述处理器和所述存储器耦合，所述存储器存储计算机指令，所述处理器读取所述计算机指令，实现如权利要求1-10中任一项所述的方法。
  22. 一种通信装置，其特征在于，包括用于执行如权利要求11-19中任一项所述的方法的单元。
  23. 一种通信装置，其特征在于，包括处理器和存储器，所述处理器和所述存储器耦合，所述存储器存储计算机指令，所述处理器读取所述计算机指令，实现如权利要求11-19中任一项所述的方法。
  24. 一种计算机可读存储介质，其特征在于，所述存储介质中存储有计算机程序或指令，当所述计算机程序或指令在计算机上运行时，实现如权利要求1-10中任一项所述的方法，或者实现如权利要求11-19中任一项所述的方法。
  25. 一种计算机程序产品，其特征在于，包括计算机程序或指令，当所述计算机程序或指令在计算机上运行时，实现如权利要求1-10中任一项所述的方法，或者实现如权利要求11-19中任一项所述的方法。
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