WO2021204088A1 - 一种通信方法及相关设备 - Google Patents

一种通信方法及相关设备 Download PDF

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Publication number
WO2021204088A1
WO2021204088A1 PCT/CN2021/085360 CN2021085360W WO2021204088A1 WO 2021204088 A1 WO2021204088 A1 WO 2021204088A1 CN 2021085360 W CN2021085360 W CN 2021085360W WO 2021204088 A1 WO2021204088 A1 WO 2021204088A1
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WIPO (PCT)
Prior art keywords
dci
terminal device
information
counting
message
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PCT/CN2021/085360
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English (en)
French (fr)
Inventor
于海凤
李秉肇
许斌
曹振臻
王燕
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华为技术有限公司
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Publication of WO2021204088A1 publication Critical patent/WO2021204088A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • This application relates to the field of communication technology, and in particular to a communication method and related equipment.
  • the working state of terminal equipment can be divided into three types, connected state, idle state and inactive state. Because only connected terminal devices can support multicast transmission, if the network device provides The terminal devices in the idle state and inactive state of the service subscribe to the multicast service, but the network device cannot know the status of these terminal devices, which will cause the network device to be unable to make accurate decisions about the transmission of the multicast service, so how to subscribe to the multicast service?
  • the number of terminal devices that are receiving or interested in receiving multicast services, optimizing the maintenance and transmission of multicast services, and improving the flexibility of terminal devices are technical problems that are being solved by those in the art.
  • the embodiment of the present application discloses a communication method and related equipment, which can count the number of terminal equipment that are receiving or interested in receiving multicast services.
  • the first aspect of the embodiments of the present application discloses a communication method, which is suitable for network equipment, and includes:
  • the counting request information is used to count the number of terminal devices that are receiving or are interested in receiving multicast services
  • the network device sends the first DCI to the terminal device through the PDCCH channel.
  • the first DCI is used for scheduling counting request information.
  • the terminal device descrambles the first DCI and obtains the counting request information according to the parameters indicated by the first DCI.
  • the terminal device replies with counting response information, and the network device can count the number of terminal devices in the RRC idle state/RRC inactive state/RRC connected state that are receiving or interested in receiving multicast services according to the counting response information. Number, and then optimize the multicast service transmission control.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network identifier.
  • the counting request information includes the service identifier of the multicast service.
  • the counting request information when the counting request information includes the service identifier of the multicast service, it indicates that the network device specifically wants to count the number of terminal devices that are interested in which kind of multicast service.
  • the method further includes: sending an access probability factor to the terminal device, where the access probability factor is used to indicate the probability of sending the counting response information.
  • the access probability factor can assist the terminal device whether to reply the counting response information.
  • the method further includes: sending at least one of the access probability factors to the terminal device, where the access probability factor is associated with a radio resource control RRC state of the terminal device , wherein, the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the method further includes: sending first indication information to the terminal device, where the first indication information is used to indicate the status of the counting request information and/or the counting response information. Time-frequency resources.
  • the network device sends the first indication information to the terminal device, and the first indication information is used to indicate the time-frequency resource of the counting response information or the counting request information. In this way, the time-frequency resource can be reasonably used.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the bandwidth part BWP indication corresponding to the multicast service, and the At least one item in the position indication information of the terminal device.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the method further includes: sending configuration information to the terminal device, where the configuration information is used to configure parameters for receiving the first DCI.
  • the network device sends configuration information to the terminal device, and the terminal device monitors the first DCI according to the configuration information, without continuously monitoring the first DCI, which causes a waste of resources.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupation duration, wherein the transmission period is When indicating the transmission interval of the first DCI, the first offset is used to indicate the starting position of the first DCI, and the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the transmission period is When indicating the transmission interval of the first DCI
  • the first offset is used to indicate the starting position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the search space indication is used to indicate the search range and/or search mode of the first DCI
  • the occupation duration is used to indicate the duration of transmission of the first DCI.
  • a second DCI is sent to the terminal device, the second DCI is used to schedule a first message, and the second DCI is scrambled by the wireless network temporary identifier Sending the first message to the terminal device, the first message including the configuration information, where the first message is a system message or a multicast message or an RRC message.
  • the method further includes: sending second indication information to the terminal device, where the second indication information is used to indicate the termination of the statistical process.
  • the terminal device after the terminal device replies to the counting response information, it receives the second indication information and terminates the statistical process, so as to avoid that the first DCI is still monitored after replying to the counting response information, which causes a waste of resources.
  • the second aspect of the embodiments of the present application discloses a communication method, which is suitable for terminal equipment and includes:
  • first downlink control information DCI from a network device, where the first DCI is used for scheduling count request information, and the first DCI is scrambled by a wireless network temporary identifier;
  • the network device sends the first DCI to the terminal device through the PDCCH channel.
  • the first DCI is used for scheduling counting request information.
  • the terminal device descrambles the first DCI and obtains the counting request information according to the parameters indicated by the first DCI.
  • the terminal device replies with counting response information, and the network device can count the number of terminal devices in the RRC idle state/RRC inactive state/RRC connected state that are receiving or interested in receiving multicast services according to the counting response information. Number, and then optimize the multicast service transmission control.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network temporary identifier.
  • the counting request information includes the service identifier of the multicast service.
  • the counting request information when the counting request information includes the service identifier of the multicast service, it indicates that the network device specifically wants to count the number of terminal devices that are interested in which kind of multicast service.
  • the method further includes: receiving an access probability factor from the network device, where the access probability factor is used to indicate the probability of sending the counting response information.
  • the access probability factor can assist the terminal device whether to reply the counting response information.
  • the method further includes: receiving at least one of the access probability factors from the network device, where the access probability factor is related to the radio resource control RRC state of the terminal device Wherein, the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the method further includes: selecting a random number from a preset range; if the random number is less than or equal to the access probability factor, sending the counting response to the network device information.
  • the method further includes: receiving first indication information sent by the network device, where the first indication information is used to indicate the timing of the counting request message and/or counting response information. Frequency resources.
  • the network device sends the first indication information to the terminal device.
  • the first indication information is used to indicate the time-frequency resource of the counting request message and/or the counting response information. In this way, the time-frequency resource can be reasonably used.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the corresponding partial bandwidth BWP indication of the multicast service, and the total bandwidth of the multicast service. At least one item in the position indication information where the terminal device is located.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5 Or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the method further includes: receiving configuration information from the network device, where the configuration information is used to configure parameters for receiving the first DCI.
  • the network device sends configuration information to the terminal device, and the terminal device monitors the first DCI according to the configuration information, without continuously monitoring the first DCI, which causes a waste of resources.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupancy duration
  • the transmission period is used to indicate The transmission interval of the first DCI
  • the first offset is used to indicate the starting position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time-frequency resource of the first DCI Location
  • the search space indication is used to indicate the search range and/or search mode of the first DCI
  • the occupation duration is used to indicate the duration of transmission of the first DCI.
  • a second DCI from the network device is received, where the second DCI is used to schedule a first message, and the second DCI is scrambled by the wireless network temporary identifier of;
  • the first message is sent to the terminal device, where the first message includes configuration information, where the first message is a system message or a multicast message or an RRC message.
  • the method further includes:
  • the terminal device terminates the statistics process, and the first condition includes:
  • the first DCI is not monitored within a preset time period
  • the number of the first DCI is not continuously monitored to reach a preset value
  • the terminal device After the terminal device replies to the counting response information, the terminal device terminates the statistics process, so as to avoid that the first DCI is still monitored after replying to the counting response information, which causes a waste of resources.
  • the third aspect of the embodiments of the present application discloses a communication method, which is suitable for network equipment and includes:
  • the first DCI is scrambled by the temporary identification of the wireless network;
  • the network device sends the first DCI to the terminal device through the PDCCH channel, the first DCI includes counting request information, the terminal device descrambles the first DCI to obtain the counting request information, and the terminal device receives the counting request information
  • the network equipment can count the number of RRC idle/RRC inactive/RRC connected terminal devices that are receiving or interested in receiving multicast services according to the counting response information, thereby optimizing the multicast service transmission control.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network identifier.
  • the first DCI includes first indication information, and the first indication information is used to indicate that the first DCI includes the counting request information.
  • the counting request information includes the service identifier of the multicast service.
  • the counting request information when the counting request information includes the service identifier of the multicast service, it indicates that the network device specifically wants to count the number of terminal devices that are interested in which kind of multicast service.
  • the method further includes: sending an access probability factor to the terminal device, where the access probability factor is used to indicate the probability of sending the counting response information.
  • the access probability factor can assist the terminal device whether to reply the counting response information.
  • the method further includes: sending at least one of the access probability factors to the terminal device, where the access probability factor is associated with a radio resource control RRC state of the terminal device , wherein, the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the method further includes: sending first indication information to the terminal device, where the first indication information is used to indicate the time and frequency of the counting request information and/or the counting response information. resource.
  • the network device sends the first indication information to the terminal device, and the first indication information is used to indicate the time-frequency resource of the counting request information and/or the counting response information. In this way, the time-frequency resource can be reasonably used.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the bandwidth part BWP indication corresponding to the multicast service, and the At least one item in the position indication information of the terminal device.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the method further includes: sending configuration information to the terminal device, where the configuration information is used to configure parameters for receiving the first DCI.
  • the network device sends configuration information to the terminal device, and the terminal device monitors the first DCI according to the configuration information, without continuously monitoring the first DCI, which causes a waste of resources.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupation duration, wherein the transmission period is When indicating the transmission interval of the first DCI, the first offset is used to indicate the starting position of the first DCI, and the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the transmission period is When indicating the transmission interval of the first DCI
  • the first offset is used to indicate the starting position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • Frequency resource location the search space indication is used to indicate the location information and search mode of the first DCI
  • the occupation duration is used to indicate the duration of transmission of the first DCI.
  • a second DCI is sent to the terminal device, the second DCI is used to schedule a first message, and the second DCI is scrambled by the wireless network temporary identifier Send a first message to the terminal device, the first message including the configuration information, where the first message is a system message or a multicast message or an RRC message.
  • the method further includes: sending second indication information to the terminal device, where the second indication information is used to instruct the terminal device to terminate the statistical process.
  • the terminal device after the terminal device replies to the counting response information, it receives the second indication information and terminates the statistical process, so as to avoid that the first DCI is still monitored after replying to the counting response information, which causes a waste of resources.
  • the fourth aspect of the embodiments of the present application discloses a communication method, which is suitable for terminal equipment and includes:
  • the network device sends the first DCI to the terminal device through the PDCCH channel, the first DCI includes counting request information, the terminal device descrambles the first DCI to obtain the counting request information, and the terminal device receives the counting request information
  • the network equipment can count the number of RRC idle/RRC inactive/RRC connected terminal devices that are receiving or interested in receiving multicast services according to the counting response information, thereby optimizing the multicast service transmission control.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network temporary identifier.
  • the first DCI includes first indication information, and the first indication information is used to indicate that the first DCI includes the counting request information.
  • the counting request information includes the service identifier of the multicast service.
  • the counting request information when the counting request information includes the service identifier of the multicast service, it indicates that the network device specifically wants to count the number of terminal devices that are interested in which kind of multicast service.
  • the method further includes: receiving an access probability factor from the network device, where the access probability factor is used to indicate the probability of sending the counting response information.
  • the access probability factor can assist the terminal device whether to reply the counting response information.
  • the method further includes: receiving at least one of the access probability factors from the network device, where the access probability factor is related to the radio resource control RRC state of the terminal device Wherein, the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the method further includes: selecting a random number from a preset range; if the random number is less than or equal to the access probability factor, sending the counting response to the network device information.
  • the method further includes: receiving first indication information sent by the network device, where the first indication information is used to indicate the timing of the counting request information and/or counting response information. Frequency resources.
  • the network device sends the first indication information to the terminal device, and the first indication information is used to indicate the time-frequency resource of the counting request information and/or the counting response information. In this way, the time-frequency resource can be reasonably used.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the corresponding partial bandwidth BWP indication of the multicast service, and the total bandwidth of the multicast service. At least one item in the position indication information where the terminal device is located.
  • the counting response information is carried in a random access message, and the random access messages are Msg1, Msg3, Msg5 Or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the method further includes: receiving configuration information from the network device, where the configuration information is used to configure parameters for receiving the first DCI.
  • the network device sends configuration information to the terminal device, and the terminal device monitors the first DCI according to the configuration information, without continuously monitoring the first DCI, which causes a waste of resources.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupation duration, wherein the transmission period is When indicating the transmission interval of the first DCI, the first offset is used to indicate the starting position of the first DCI, and the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the transmission period is When indicating the transmission interval of the first DCI
  • the first offset is used to indicate the starting position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the search space indication is used to indicate search location range information and/or search mode of the first DCI
  • the occupation duration is used to indicate the duration of transmission of the first DCI.
  • a second DCI from the network device is received, where the second DCI is used to schedule a first message, and the second DCI is scrambled by the wireless network temporary identifier Send the first message to the terminal device, where the first message includes configuration information, where the first message is a system message or a multicast message or an RRC message.
  • the method further includes: when a first condition is met, the terminal device terminates the statistical process, and the first condition includes: not listening to the first condition within a preset time period. A DCI; or continuously failing to monitor the number of the first DCI reaching a preset value; or receiving second indication information from the network device, where the second indication information is used to instruct the terminal device to terminate the Statistical process.
  • the terminal device After the terminal device replies to the counting response information, the terminal device terminates the statistics process, so as to avoid that the first DCI is still monitored after replying to the counting response information, which causes a waste of resources.
  • the fifth aspect of the embodiments of the present application discloses a communication device.
  • the device may be, for example, a network device or a chip in a network device, and the device includes:
  • a processing unit configured to send first downlink control information DCI to a terminal device through a communication unit, the first DCI is used for scheduling counting request information, and the first DCI is scrambled by a wireless network temporary identifier;
  • the processing unit is configured to send the counting request information to the terminal device through the communication unit, and the counting request information is used to count the number of terminal devices that are receiving or are interested in receiving multicast services;
  • the processing unit is configured to receive counting response information from the terminal device through the communication unit, and the counting response information is used to respond to the counting request information.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network identifier.
  • the counting request information includes a service identifier of the multicast service.
  • the processing unit is configured to send an access probability factor to the terminal device through the communication unit, and the access probability factor is used to indicate the probability of sending the counting response information .
  • the processing unit is configured to send at least one of the access probability factors to the terminal device through the communication unit, and the access probability factor is related to the wireless connection of the terminal device.
  • the resource control RRC state is associated, wherein the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the processing unit is configured to send first indication information to the terminal device through the communication unit, and the first indication information is used to indicate the counting request information and/or The time-frequency resource of the count response information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the bandwidth part BWP indication corresponding to the multicast service, and the At least one item in the position indication information of the terminal device.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the processing unit is further configured to send configuration information to the terminal device through the communication unit, and the configuration information is used to configure parameters for receiving the first DCI.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupation duration, wherein the transmission period is When indicating the transmission interval of the first DCI, the first offset is used to indicate the starting position of the first DCI, and the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the transmission period is When indicating the transmission interval of the first DCI
  • the first offset is used to indicate the starting position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the search space indication is used to indicate the search range and/or search mode of the first DCI
  • the occupation duration is used to indicate the duration of transmission of the first DCI.
  • the processing unit is further configured to send a second DCI to the terminal device through the communication unit, and the second DCI is used to schedule the first message, wherein the first 2.
  • the DCI is scrambled through the wireless network temporary identifier; the processing unit is further configured to send a first message to the terminal device through the communication unit, the first message including the configuration information, wherein:
  • the first message is a system message or a multicast message or an RRC message.
  • the processing unit is further configured to send second indication information to the terminal device through the communication unit, and the second indication information is used to instruct the terminal device to terminate the statistical process .
  • the sixth aspect of the embodiments of the present application discloses a communication device.
  • the device may be, for example, a terminal device or a chip in a terminal device, and the device includes:
  • a processing unit configured to receive first downlink control information DCI from a network device through a communication unit, the first DCI is used for scheduling count request information, and the first DCI is scrambled by a wireless network temporary identifier;
  • the processing unit is further configured to receive the counting request information from the network device through the communication unit, where the counting request information is used to count the number of terminal devices that are receiving or are interested in receiving multicast services ;
  • the processing unit is further configured to send the counting response information to the network device through the communication unit, where the counting response information is used to respond to the counting request information.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network temporary identifier.
  • the counting request information includes the service identifier of the multicast service.
  • the processing unit is further configured to receive an access probability factor from the network device through the communication unit, and the access probability factor is used to instruct to send the counting response information The probability.
  • the processing unit is further configured to receive at least one of the access probability factors from the network device through the communication unit, and the access probability factor is related to the terminal device
  • the radio resource control RRC state is associated with the RRC state, where the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the processing unit is further configured to select a random number from a preset range; the processing unit is further configured to use the communication unit if the random number is less than or equal to the Access probability factor, sending the counting response information to the network device.
  • the processing unit is further configured to receive first indication information sent by the network device through the communication unit, and the first indication information is used to indicate the counting request information and /Or the time-frequency resource of the counting response information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the corresponding partial bandwidth BWP indication of the multicast service, and the total bandwidth of the multicast service. At least one item in the position indication information where the terminal device is located.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the processing unit is further configured to receive configuration information from the network device through the communication unit, and the configuration information is used to configure parameters for receiving the first DCI.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupation duration
  • the transmission period is used to indicate The transmission interval of the first DCI
  • the first offset is used to indicate a parameter of the transmission start position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time of the first DCI Frequency resource location
  • the search space indication is used to indicate the search range and/or search mode of the first DCI
  • the occupation duration is used to indicate the duration of transmission of the first DCI.
  • the processing unit is further configured to receive a second DCI from the network device through the communication unit, and the second DCI is used to schedule the first message, wherein the The second DCI is scrambled by the wireless network temporary identifier; the processing unit is further configured to send the first message to the terminal device through the communication unit, and the first message includes configuration information, where , The first message is a system message, a multicast message, or an RRC message.
  • the processing unit is further configured to terminate the statistical process when a first condition is met, and the first condition includes: the first DCI is not monitored within a preset time period Or the number of the first DCI is not continuously monitored to reach the preset value; or the second indication information from the network device is received through the communication unit, the second indication information is used to instruct the terminal device to terminate the Describe the statistical process.
  • a seventh aspect of the embodiments of the present application discloses a communication device.
  • the device includes at least one processor and a transceiver, wherein the at least one processor is used for communicating with other devices through the transceiver, and the memory is used for A computer program is stored, and the processor calls the computer program to perform the following operations:
  • first downlink control information DCI Sending first downlink control information DCI to a terminal device through a transceiver, where the first DCI is used for scheduling counting request information, and the first DCI is scrambled by a wireless network temporary identifier;
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network identifier.
  • the counting request information includes a service identifier of the multicast service.
  • the processor is further configured to send an access probability factor to the terminal device through the transceiver, and the access probability factor is used to indicate the sending of the counting response information Probability.
  • the processor is further configured to send at least one of the access probability factors to the terminal device through the transceiver, and the access probability factor is the same as that of the terminal device.
  • the radio resource control is associated with an RRC state, where the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the processor is further configured to send first indication information to the terminal device through the transceiver, where the first indication information is used to indicate the counting request information and/ Or the time-frequency resource of the counting response information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the bandwidth part BWP indication corresponding to the multicast service, and the At least one item in the position indication information of the terminal device.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the processor is further configured to send configuration information to the terminal device through the transceiver, where the configuration information is used to configure parameters for receiving the first DCI.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupation duration, wherein the transmission period is When indicating the transmission interval of the first DCI, the first offset is used to indicate the starting position of the first DCI, and the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the transmission period is When indicating the transmission interval of the first DCI
  • the first offset is used to indicate the starting position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time of the first DCI.
  • the search space indication is used to indicate the search range and/or search mode of the first DCI
  • the occupation duration is used to indicate the duration of transmission of the first DCI.
  • the processor is further configured to send a second DCI to the terminal device through the transceiver, and the second DCI is used to schedule the first message, wherein the first 2.
  • the DCI is scrambled through the wireless network temporary identifier; the processor is further configured to send a first message to the terminal device through the transceiver, the first message including the configuration information, where:
  • the first message is a system message or a multicast message or an RRC message.
  • the processor is further configured to send second indication information to the terminal device through the transceiver, and the second indication information is used to instruct the terminal device to terminate the statistical process .
  • An eighth aspect of the embodiments of the present application discloses a communication device.
  • the device includes at least one processor and a transceiver, wherein the at least one processor is used for communicating with other devices through the transceiver, and the memory is used for A computer program is stored, and the processor calls the computer program to perform the following operations:
  • first downlink control information DCI from a network device, where the first DCI is used for scheduling counting request information, and the first DCI is scrambled by a wireless network temporary identifier;
  • the counting request information from the network device, where the counting request information is used to count the number of terminal devices that are receiving or are interested in receiving multicast services;
  • the counting response information is sent to the network device through a transceiver, where the counting response information is used to respond to the counting request information.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network temporary identifier.
  • the counting request information includes a service identifier of the multicast service.
  • the processor is further configured to receive an access probability factor from the network device through the transceiver, where the access probability factor is used to instruct to send the counting response information The probability.
  • the processor is further configured to receive at least one of the access probability factors from the network device through the transceiver, and the access probability factor is the same as that of the terminal device.
  • the radio resource control RRC state is associated with the RRC state, where the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the processor is further configured to select a random number from a preset range; if the random number is less than or equal to the access probability factor, send a message to the The network device sends the counting response information.
  • the processor is further configured to receive first indication information sent by the network device through the transceiver, and the first indication information is used to indicate the counting request information and /Or the time-frequency resource of the counting response information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the corresponding partial bandwidth BWP indication of the multicast service, and the total bandwidth of the multicast service. At least one item in the position indication information where the terminal device is located.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the processor is further configured to receive configuration information from the network device through the transceiver, and the configuration information is used to configure parameters for receiving the first DCI.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupancy duration
  • the transmission period is used to indicate The transmission interval of the first DCI
  • the first offset is used to indicate the starting position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time-frequency resource of the first DCI Location
  • the search space indication is used to indicate the search range and/or search mode of the first DCI
  • the occupation duration is used to indicate the duration of transmission of the first DCI.
  • the processor is further configured to receive a second DCI from the network device through the transceiver, and the second DCI is used to schedule a first message, wherein the The second DCI is scrambled by the wireless network temporary identifier; the processor is further configured to send the first message to the terminal device through the transceiver, and the first message includes configuration information, where , The first message is a system message, a multicast message, or an RRC message.
  • the processor is further configured to terminate the statistical process when a first condition is met, and the first condition includes: the first DCI is not monitored within a preset time period ; Or continuously fail to monitor that the number of the first DCI reaches a preset value; or receive second indication information from the network device, where the second indication information is used to instruct the terminal device to terminate the statistics process .
  • the ninth aspect of the embodiments of the present application discloses a communication system, which includes a network device and a terminal device, wherein the network device can perform any one of the first and third aspects or optional According to the method described in the solution, the terminal device may execute the method described in any one of the second aspect and the fourth aspect or an optional solution of any one aspect.
  • the tenth aspect of the embodiments of the present application discloses a chip.
  • the chip includes at least one processor and an interface circuit.
  • the chip further includes a memory, the memory, the interface circuit, and the at least one processor.
  • the computer program is stored in the at least one memory, and the computer program is executed by the processor to implement any one or any of the first aspect, the second aspect, the third aspect, and the fourth aspect. Aspects of the method described in the alternative scheme.
  • the eleventh aspect of the embodiments of the present application discloses a computer-readable storage medium, the computer storage medium stores a computer program, and the computer program implements the first aspect, the second aspect, and the third aspect when executed by a processor. And the method described in any one or an optional solution of any one of the fourth aspect.
  • the twelfth aspect of the embodiments of the present application discloses a computer product.
  • the computer program product runs on a processor, it realizes any one of the first, second, third, and fourth aspects or Any aspect of the method described in the alternative scheme.
  • Fig. 1 is an architecture diagram of a 5G NR system dual-channel smart unicast wireless access network provided by an embodiment of the present application;
  • FIG. 2 is a schematic diagram of an MBMS network architecture in an LTE system provided by an embodiment of the present application
  • FIG. 3 is a schematic flowchart of an LTE counting mechanism provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of a 3G counting mechanism 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.
  • Fig. 6 is a schematic diagram of a MAC CE carrying counting request information provided by an embodiment of the present application.
  • FIG. 7 is a schematic diagram of a Control PDU carrying counting request information provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of a communication method provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another communication method provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a subframe reserved for use by MBSFN by a network device according to an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • FIG. 13 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • FIG. 14 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
  • Terminal devices including devices that provide users with voice and/or data connectivity, specifically, include devices that provide users with voice, or include devices that provide users with data connectivity, or include devices that provide users with voice and data connectivity Sexual equipment.
  • it may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem.
  • the terminal device can communicate with the core network via a radio access network (RAN), exchange voice or data with the RAN, or exchange voice and data with the RAN.
  • RAN radio access network
  • the terminal equipment may include user equipment (UE), wireless terminal equipment, mobile terminal equipment, device-to-device communication (device-to-device, D2D) terminal equipment, vehicle to everything (V2X) terminal equipment , Machine-to-machine/machine-type communications (M2M/MTC) terminal equipment, Internet of things (IoT) terminal equipment, light UE, and reduced capabilities User equipment (reduced capability UE, REDCAP UE), subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station), access point (access point, AP), remote Terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), etc.
  • UE user equipment
  • D2D device-to-device communication
  • V2X vehicle to everything
  • M2M/MTC Machine-to-machine/machine-type communications
  • IoT Internet of things
  • REDCAP UE reduced capabilities
  • subscriber unit
  • it may include mobile phones (or “cellular” phones), computers with mobile terminal equipment, portable, pocket-sized, hand-held, mobile devices with built-in computers, and so on.
  • PCS personal communication service
  • PCS cordless phones
  • SIP session initiation protocol
  • WLL wireless local loop
  • PDA personal digital assistants
  • restricted devices such as devices with low power consumption, or devices with limited storage capabilities, or devices with limited computing capabilities. Examples include barcodes, radio frequency identification (RFID), sensors, global positioning system (GPS), laser scanners and other information sensing equipment.
  • RFID radio frequency identification
  • GPS global positioning system
  • laser scanners and other information sensing equipment.
  • the terminal device may also be a wearable device.
  • Wearable devices can also be called wearable smart devices or smart wearable devices, etc. It is a general term for using wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait.
  • a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a kind of hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
  • wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
  • Use such as all kinds of smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.
  • the various terminal devices described above if they are located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be regarded as vehicle-mounted terminal equipment, for example, the vehicle-mounted terminal equipment is also called on-board unit (OBU). ).
  • OBU on-board unit
  • the terminal device may also include a relay. Or it can be understood that everything that can communicate with the base station can be regarded as a terminal device.
  • the device for realizing the function of the terminal device may be a terminal device, or a device capable of supporting the terminal device to realize the function, such as a chip system, and the device may be installed in the terminal device.
  • the chip system may be composed of chips, or may include chips and other discrete devices.
  • the device used to implement the functions of the terminal is a terminal device as an example to describe the technical solutions provided in the embodiments of the present application.
  • Network equipment including, for example, access network (AN) equipment, such as a base station (e.g., access point), which may refer to equipment that communicates with wireless terminal equipment through one or more cells on the air interface in the access network
  • AN access network
  • a base station e.g., access point
  • V2X vehicle-to-everything
  • the base station can be used to convert the received air frame and IP packet to each other, as a router between the terminal device and the rest of the access network, where the rest of the access network can include the IP network.
  • the RSU can be a fixed infrastructure entity that supports V2X applications, and can exchange messages with other entities that support V2X applications.
  • the network equipment can also coordinate the attribute management of the air interface.
  • the network equipment may include a long term evolution (LTE) system or an evolved base station (NodeB or eNB or e-NodeB, evolutional NodeB) in a long term evolution-advanced (LTE-A) system, Or it may also include the next generation node B (gNB) in the 5th generation (5G) NR system (also referred to as the NR system) or cloud access network (cloud access network).
  • LTE long term evolution
  • NodeB or eNB or e-NodeB, evolutional NodeB evolutional NodeB
  • LTE-A long term evolution-advanced
  • gNB next generation node B
  • 5G NR system also referred to as the NR system
  • cloud access network cloud access network
  • the centralized unit (CU) and distributed unit (DU) in the radio access network (Cloud RAN) system are not limited in this embodiment of the application.
  • the network equipment may also include core network equipment.
  • the core network equipment includes, for example, access and mobility management function (AMF), user plane function (UPF), or session management function (session management function, SMF). Wait.
  • AMF access and mobility management function
  • UPF user plane function
  • SMF session management function
  • the device used to implement the function of the network device may be a network device, or a device capable of supporting the network device to implement the function, such as a chip system, and the device may be installed in the network device.
  • the device used to implement the functions of the network equipment is a network device as an example to describe the technical solutions provided in the embodiments of the present application.
  • Radio resource control (RRC) state terminal equipment has three RRC states: RRC connected state (connected state), RRC idle state (idle state) and inactive state (inactive state).
  • RRC connected state connected state
  • RRC idle state idle state
  • inactive state inactive state
  • RRC connected state (or, can also be referred to as connected state for short.
  • connected state and “RRC connected state” are the same concept, and the two terms can be interchanged): the terminal device establishes an RRC connection with the network, and it can Perform data transfer.
  • RRC idle state (or, can also be referred to as idle state for short.
  • idle state and “RRC idle state” are the same concept, and the two terms can be interchanged): the terminal device does not establish an RRC connection with the network, and the base station The context of the terminal device is not stored. If the terminal device needs to enter the RRC connected state from the RRC idle state, it needs to initiate an RRC connection establishment process.
  • RRC inactive state (or, can also be referred to as inactive state for short.
  • inactive state “inactive state”, “deactivated state”, “inactive state”, “RRC inactive state” and “RRC deactivated state” , Is the same concept, these terms can be interchanged):
  • the terminal device entered the RRC connection state before, and then the base station released the RRC connection, but the base station saved the context of the terminal device. If the terminal device needs to enter the RRC connected state again from the RRC inactive state, it needs to initiate the RRC recovery process (or called the RRC connection recovery process). Compared with the RRC establishment process, the RRC recovery process has shorter time delay and lower signaling overhead. However, the base station needs to save the context of the terminal device, which will occupy the storage overhead of the base station.
  • LTE frequency division duplexing (FDD) frame structure currently, a radio frame of LTE FDD is divided into 10 subframes (subframe), each subframe is 1ms in length, and different subcarrier intervals correspond to the frame The slot length in the structure and the relationship between slot and subframe are different.
  • the specific subcarrier spacing and subframe, time slot, and number of slots/subframe are shown in Table 1 below:
  • each slot has a length of 0.5ms, and each slot contains one orthogonal frequency division multiplexing (OFDM) symbol containing a cyclic prefix (CP).
  • OFDM orthogonal frequency division multiplexing
  • 1 frame is equal to 10ms
  • 1 frame is equal to 10 subframes
  • one subframe is equal to 1 time slot
  • 1 subframe is equal to 1ms.
  • each slot contains an OFDM symbol containing CP.
  • the position of time slot 0 starts at 30720Ts.
  • nf is the radio frame number
  • Ts is the basic time unit.
  • the existing multicast/multicast single frequency network (multicast broadcast single frequency network, MBSFN) configuration process is: network equipment through the information element (information element, IE) multimedia broadcast multicast service network subframe configuration (MBSFN-SubframeConfig ) To configure the subframes that can be reserved for the downlink multimedia broadcast multicast service network (MBSFN) in the network.
  • MBSFN-SubframeConfig multimedia broadcast multicast service network subframeConfig
  • the network device allocates the time radioframeAllocationPeriod through the radio frame and the radio frame allocation bias.
  • the shift value radioframeAllocationOffset is used to configure which radio frames the MBSFN subframes will be in, and then use subframe allocation subframeAllocation and subframe allocation-v1430subframeAllocation-v1430 to specifically indicate which subframes are in the MBSFN subframe.
  • the specific configuration is shown in Table 2.
  • radioFrameAllocationPeriod In Table 2, (1), radioFrameAllocationPeriod, radioFrameAllocationOffset are used to indicate the location of the radio frame where the MBSFN subframe appears.
  • SFN System Frame Number
  • n1 corresponds to the value 1
  • n2 corresponds to the value 2.
  • subframeAllocation used to indicate which subframes are specifically allocated as MBSFN subframes in the radio frame that satisfies the radioFrameAllocationPeriod, radioFrameAllocationOffset constraint formula in (1).
  • OurFrames-v1430 uses a string of bits to indicate the position of MBSFN subframes in 4 consecutive radio frames.
  • subframes #4 and #9 can also be configured as MBSFN subframes.
  • FIG. 1 is a schematic structural diagram of a communication system 100 according to an embodiment of the present invention.
  • the system 100 may include a network device 111, a network device 110, a terminal device 101, a terminal device 102, and a terminal device 103.
  • the system 100 to which the method of the embodiment of the present application can be applied may include more or fewer network devices or terminal devices.
  • Network equipment and terminal equipment can be hardware, software that is functionally divided, or a combination of the two. Communication between network devices and terminal devices can be through other devices or network elements.
  • the network device 110 can transmit data with multiple terminal devices, that is, the network device 110 sends downlink data to the terminal device 101-terminal device 103.
  • the terminal device 101-terminal device 103 can also send uplink data to the network device 110. data.
  • the method in the embodiment of the present application can be applied to the system 100 shown in FIG. 1.
  • the network device 111 and the network device 110 may be any of the network devices described above.
  • the terminal device 101-the terminal device 103 may be any of the terminal devices described above.
  • the dashed line represents the control plane connection, and the solid line represents the transmission path of the user data packet.
  • the terminal device 101-the terminal device 103 are all connected to the network device 110, and each terminal device is configured with a cell radio network temporary identifier (C-RNTI) and a data radio bearer (C-RNTI) for unicast bearer.
  • C-RNTI cell radio network temporary identifier
  • C-RNTI data radio bearer
  • DRB data radio bearer
  • DRB also associates a group radio network temporary identifier (G-RNTI), and realizes dynamic conversion between unicast and multicast through G-RNTI and C-RNTI scheduling.
  • G-RNTI group radio network temporary identifier
  • the terminal device 101-terminal device 103 receives the same service, and each terminal device has a unicast bearer, that is, the channel for receiving data packets based on C-RNTI.
  • the network device 110 also configures the same for the terminal device 101-terminal device 103.
  • G-RNTI In the case of using C-RNTI scheduling, the network device 110 may schedule the same data packet to the terminal device 101-the terminal device 103 respectively. In this case, unicast scheduling is used.
  • the network device 110 schedules a copy of the data packet, and both the terminal device 101 and the terminal device 103 can receive it.
  • the multimedia broadcast multicast service (MBMS) service has been introduced from the third generation partnership project release 9 (3rd generation partnership project release 9, 3GPP Rel-9), including network architecture and interface protocols , And the introduction of a multicast/multicast single frequency network (MBSFN) area on the RAN side.
  • 3rd generation partnership project release 9 3rd generation partnership project release 9, 3GPP Rel-9
  • MMSFN multicast/multicast single frequency network
  • the third generation partnership project version 10 (3rd generation partnership project release 10, 3GPP Rel-10) to the third generation partnership project version 12 (3rd generation partnership project release 12, 3GPP Rel-12) continue to continuously enhance, including counting Counting mechanism, multi-frequency deployment and enhanced carrier aggregation and other enhanced features
  • the third generation partnership project version 13 (3rd generation partnership project release 13, 3GPP Rel-13) introduced single cell point to multi- point, SC-PTM) technology, to realize unicast multicast dynamic scheduling, but it is still based on the network architecture and process of Rel-9MBMS.
  • the third generation partnership project version 14 (3rd generation partnership project release 14, 3GPP Rel-14) and the third generation partnership project version 16 (3rd generation partnership project release 16, 3GPP Rel-16) introduce TV service enhancement technology (enhancement) for TV service, EN-TV) and its enhanced technology, based on the MBMS proprietary carrier, for large-scale MBSFN deployment with high towers and high power.
  • FIG. 2 is a schematic diagram of the MBMS network architecture in the LTE system.
  • BM-SC broadcast/multicast service center
  • MCE Multi-cell/multicast coordination entity
  • MBMS gateway Multimedia Broadcast Multicast Service Gateway, MBMS-GW
  • BM-SC mainly realizes the distribution and control functions of evolved multimedia broadcast/multicast services (evolved multimedia broadcast/multicast services, eMBMS) services.
  • eMBMS evolved multimedia broadcast/multicast services
  • BM-SC as the transmission portal of the eMBMS service of the content provider, is the initiator of the eMBMS session, and provides functions such as scheduling and delivery of eMBMS services, and security key management.
  • MCE is a logical entity introduced by LTE eMBMS to realize multi-cell transmission and is responsible for the allocation of radio resources of base stations in the MBSFN area to which it is connected and eMBMS session management.
  • the MBMS-GW is responsible for transmitting the MBMS session control message to the mobility management node function (mobility management entity, MME), and forwarding the MBMS service data to the base station.
  • MME mobility management node function
  • SC-PTM is a multicast transmission technology.
  • Network equipment uses group-radio network temporary identity (G-RNTI) to simultaneously schedule service data to multiple terminal equipment.
  • G-RNTI group-radio network temporary identity
  • Each G -RNTI can be associated with an MBMS service.
  • SC-PTM has a single cell multicast control channel (single cell multicast control channel, SC-MCCH) and a single cell multicast transport channel (single cell multicast transport channel, SC-MTCH). Both logical channels are It is mapped to the downlink shared channel (DL-SCH).
  • the control channel SC-MCCH contains service identification and time information for receiving broadcast service logical channel (multicast traffic channel, MTCH), and the SC-MTCH is used to transmit service data.
  • MTCH multicast traffic channel
  • the process for terminal equipment to receive multicast service data in SC-MTCH is as follows:
  • the terminal equipment receives system messages from network equipment, and the system messages include control information for transmitting SC-PTM services, that is, SC-MCCH configuration information.
  • the system message can know how to receive the SC-MCCH.
  • the terminal device After receiving the SC-MCCH, that is, the configuration information of the SC-MTCH, the terminal device uses the configuration information of the SC-MTCH and the corresponding physical downlink control channel (physical downlink control channel, PDCCH).
  • the scheduling information of) can receive the multicast service data in the SC-MTCH.
  • the dashed line represents the control plane connection
  • the solid line represents the transmission path of user data.
  • the three terminal devices are all connected to the network equipment, and each terminal device is set with a cell-radio network temporary identifier (C-RNTI) and a data radio bearer (data radio bearer) used for unicast bearer. , DRB).
  • C-RNTI cell-radio network temporary identifier
  • DRB data radio bearer
  • G-RNTI cell-radio network temporary identifier
  • DRB data radio bearer
  • the network device uses unicast to send the same piece of multicast configuration information to each For multiple terminal devices of business interest, the base station also configures the same G-RNTI for the three terminal devices at the same time, and broadcasts the multicast configuration information to each terminal device.
  • the multicast configuration information includes G-RNTI, Part of the bandwidth (bandwidth part, BWP), discontinuous reception (discontinuous reception, DRX) and other related configurations.
  • the counting mechanism is used in the LTE system to count the number of connected terminal devices that are interested in multicast services.
  • Figure 3 shows the counting mechanism of LTE.
  • the network device sends a multicast count request message to at least one terminal device through a multicast control channel (multicast control channel, MCCH).
  • MCCH multicast control channel
  • the message carries the multicast service identification information.
  • the multicast service identification information is used to inform the terminal device that the network device wants to To count the number of terminal devices that are interested in a specific multicast service, after receiving the multicast count request information from the network device, the terminal device sends the multicast count response information to the network device, and the multicast count response information carries
  • the network device can count the number of connected terminal devices that are interested in the multicast service according to the counting response information.
  • the counting mechanism is used to count the number of connected or idle terminal devices that are interested in multicast services.
  • Figure 4 shows the counting mechanism of 3G.
  • the network device sends a multicast modified service information message to at least one terminal device through the MCCH channel.
  • the multicast modified service information message includes configuration information (used to periodically send the multicast modified service information message) and indication information, and the indication information is used for Instruct the terminal device to trigger the multicast counting process.
  • the terminal device receives the indication information in the multicast modified service information message, it triggers the multicast counting process.
  • the terminal device receives the network device periodically according to the configuration information.
  • the multicast access information message includes the access probability indicator and the multicast service identification indicator, where the access probability indicator is to prevent a large number of terminal devices from sending multicast count response information to the network device.
  • the multicast service identifier is used to indicate that the terminal device is specifically interested in a certain multicast service and responds with count response information.
  • the terminal device After receiving the multicast access information message, the terminal device sends multicast count response information to the network device, where the multicast count response information specifically includes the RRC cause value related to the multicast.
  • the network device can count the number of connected terminal devices that are interested in the multicast service according to the counting response information. If the terminal device fails to receive the multicast access information message within the sending period of the multicast access information message, the terminal device exits the multicast counting process.
  • the above LTE counting mechanism is only suitable for counting the number of connected terminal devices interested in multicast services, but cannot count the number of idle and inactive terminal devices interested in multicast, and multicast
  • the sending of the counting request message needs to rely on the MCCH channel.
  • the sending of the multicast modified service information message also needs to rely on the MCCH channel. Therefore, how to count the number of terminal devices interested in multicast and the existing MCCH mechanism to apply the new 5G features and improve communication efficiency are technical problems that are being solved by those in the art.
  • this application proposes the following solutions.
  • FIG. 5 is a communication method provided by an embodiment of the present application. The method includes but is not limited to the following steps:
  • Step S501 The network device sends configuration information to the terminal device.
  • this step S501 is an optional step.
  • the configuration information is used to configure parameters for receiving the first DCI, or the configuration information is used to indicate the time-frequency position of the first DCI. It can be understood that the configuration information includes configuration parameters that instruct the terminal device to receive the first DCI.
  • the configuration information may include at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupancy duration.
  • the transmission period is used to indicate the transmission interval of the first DCI
  • the first offset Used to indicate the sending start position of the first DCI
  • the time-frequency control resource location indicator is used to indicate the time-frequency resource location of the first DCI
  • the search space indicator is used to indicate the search range and/or search mode of the first DCI , That is, where/how the terminal device searches for the first DCI.
  • the occupied duration is used to indicate the duration of transmitting the first DCI.
  • the network device can send configuration information to the terminal device in many ways.
  • the network device sends a second DCI to the terminal device, the second DCI is used to schedule the first message, and then the network device sends a first message to the terminal device, and the first message includes the configuration information.
  • the second DCI is scrambled by a wireless network temporary identifier;
  • the first message is a system message or a multicast message or an RRC message, and the wireless network temporary identifier is a group wireless network temporary identifier or a special wireless network temporary identifier, or System information RNTI (SI-RNTI), the special wireless network temporary identifier may be other wireless network temporary identifiers except G-RNTI and SI-RNTI.
  • SI-RNTI System information RNTI
  • the first message is a system message. If the second DCI is scrambled by G-RNTI, the first message is a multicast message.
  • the terminal device passes G-RNTI.
  • the -RNTI descrambles the second DCI, detects the relevant PDSCH channel to receive the multicast message, thereby receives the configuration information, and enters the statistical process according to the configuration information.
  • the network device periodically sends the first DCI according to the configuration information.
  • the DCI is scrambled with G-RNT.
  • the first DCI is used for scheduling counting request information.
  • the terminal device continuously monitors the first DCI periodically according to the configuration information, until the first DCI is descrambled through G-RNTI and the related
  • the PDSCH channel receives the counting request information or terminates the statistical process, and the specific terminal device determines the conditions for terminating the statistical process is described in detail in step S509.
  • the network device before sending the second DCI, the network device sends a system message to the terminal device, the system message includes second configuration information, and the second configuration information is used to configure parameters for receiving the second DCI, and the second configuration information Used to indicate the time-frequency resource location of the second DCI.
  • the network device sends a system message to the terminal device, and the system message includes the configuration information.
  • the network device sends an RRC message to the terminal device, and the RRC message includes the configuration information.
  • the network device sends a multicast message to the terminal device, and the multicast message includes the configuration information.
  • the terminal device After the network device sends the configuration information to the terminal device, the terminal device enters the statistical process according to the configuration information, determines the time domain position and/or frequency domain position for receiving the first DCI according to the configuration information, and continuously monitors the first DCI periodically , Wherein, the terminal device may determine the time domain position of receiving the first DCI according to the configuration information in multiple ways:
  • the terminal device is determined by the time-frequency control resource location indication information.
  • the time-frequency control resource location indicator includes a time-domain location indicator of the control resource and/or a frequency-domain location indicator of the control resource.
  • the time domain position indication mode of the control resource may include: Method 1: An absolute time indication, for example, X days, X hours, X minutes, X seconds, X milliseconds can be indicated, and the granularity of the specific time indication is not limited; or, an absolute time indication can be indicated.
  • Radio frame number, or radio frame number + subframe number, or radio frame number + subframe number + time slot number for example, if the time domain position of the control resource is indicated as the radio frame number (SFN) X, The corresponding terminal device receives the first DCI at the radio frame number X.
  • Manner 2 Through a relative time indication, for example, the corresponding time point is indicated at a relative time after the terminal device receives the configuration information, that is, the time domain position of the control resource. This time can be predefined by the protocol or configured by the network device.
  • the terminal device determines the sending position of the first DCI according to the sending period and the first offset.
  • the sending period is used to indicate the sending interval of the first DCI
  • the first offset is used to indicate the sending start position of the first DCI
  • the network device sends the second DCI scrambled by the group wireless network temporary identity to the terminal device.
  • the second DCI is used to schedule RRC messages, and the configuration information is carried in the RRC messages.
  • the terminal device descrambles the second DCI through the group wireless network temporary identification, and obtains the configuration information in the RRC message.
  • the configuration information includes the transmission period T and the first offset offset.
  • the time domain SFN position of a DCI monitors the first DCI until the terminal device successfully receives the first DCI or terminates the multicast counting process.
  • indication information may be further used to indicate that in the system radio frame corresponding to the SFN that meets the above conditions, the subframe position of the first DCI may be sent, or the first DCI may be sent The slot position or the symbol position where the first DCI is sent.
  • this indication information can be carried in the form of a bitmap.
  • bitmap bitmap is used to indicate the position of the subframe for sending the first DCI
  • a radio frame since a radio frame includes 10 subframes, 10 bits can be used to indicate which subframes can send the first DCI, and the 10 bits correspond to the subframes respectively. From frame 0 to subframe 9, when a bit position is 1, it means that the subframe corresponding to the bit can be used to send the first DCI, and vice versa.
  • the terminal device determines the sending position of the first DCI through an index of an effective combination of a starting position and a length (joint coding) provided by the network device, where the index is included in the configuration information.
  • the manner in which the terminal device determines the frequency domain position of the first DCI according to the configuration information includes the following manners:
  • Manner 1 Through absolute position indication-the configuration information includes absolute position information, and the network device can instruct to acquire the frequency point information of the first DCI.
  • Manner 2 Indicating by way of index-configuration information includes index, network equipment can be indicated by way of index, the resource granularity indicated by index can be frequency point, or BWP, or resource block, or sub-carrier.
  • the solution of the present invention does not Do restrictions.
  • the network device may indicate the frequency index corresponding to the first DCI, or indicate the BWP index corresponding to the first DCI, or indicate the resource block index of the first DCI, or indicate the resource block index of the first DCI+subcarrier index.
  • Manner 3 Indication by means of bitmap-the configuration information includes a bitmap, and the network device can use the bitmap to indicate which resource blocks can be used for the first DCI, and each bit can correspond to a group of RBs (for example, a group includes 6RB), When the bit is set to "1", it identifies that a group of RBs corresponding to this bit can be used for the first DCI, and vice versa.
  • the starting RB group position of the resource block can be specified by a protocol, or indicated by a network device through dedicated signaling.
  • the foregoing absolute position indication method is also applicable to frequency domain resource indications of other resource granularities, which is not limited here.
  • the network device sends configuration information to the terminal device, and the terminal device monitors the first DCI according to the configuration information, without continuously monitoring the first DCI, which causes a waste of resources, and the configuration information is not only used to indicate the first DCI.
  • the time domain resource location of the DCI is also used to indicate the frequency domain resource location of the first DCI, thereby making full use of communication resources and improving communication efficiency.
  • Step S502 The terminal device receives the configuration information from the network device.
  • the terminal device may determine the time domain position or the frequency domain position of the first DCI according to the configuration information.
  • Step S503 The network device sends the first downlink control information DCI to the terminal device.
  • the first DCI is used for scheduling counting request information, and the first DCI may be scrambled by using a wireless network temporary identifier.
  • the wireless network temporary identifier may be a cell radio network temporary identifier (C-RNTI), a group radio network temporary identifier (G-RNTI), and a single cell wireless network temporary identifier (single cell).
  • SC-RNTI single cell notification network temporary identifier
  • SC-N-RNTI Single cell notification network temporary identifier
  • SI-RNTI System Information RNTI
  • the first multicast service For the sake of simplicity, it will start receiving the first multicast service, is receiving the first multicast service, is about to receive the first multicast service, hopes (expects) to receive the first multicast service, or Interest in receiving the first multicast service is simply referred to as subscribing to the first multicast service, and stopping receiving the first multicast service or not interested in receiving the first multicast service is simply referred to as not subscribing to the first multicast service.
  • the first DCI is scrambled by the group radio network temporary identity, because the first DCI is scrambled by the G-RNTI, and the G-RNTI corresponds to the service identity of the multicast service Therefore, it is equivalent to the G-RNTI implicitly carrying the service identifier of the multicast service. Therefore, when the terminal device receives the first DCI scrambled by the G-RNTI, it can determine which type of multicast the network device wants to count. For services, the scheduling information carried by the first DCI can be used to send to terminal equipment subscribing to the same multicast service.
  • the first DCI is used to schedule counting request information, that is to say, the counting request information corresponds to the corresponding G-RNTI . Since the first DCI is used for scheduling counting request information and the first DCI is scrambled by G-RNTI, the terminal device uses G-RNTI to descramble the first DCI from the PDCCH channel, and decorrelate the parameters indicated by the first DCI Receive counting request information on the PDSCH. Optionally, the first DCI may also schedule other multicast-related data or signaling.
  • the first DCI includes counting request information
  • the first DCI also includes indication information
  • the indication information is used to indicate that the first DCI includes counting request information, and thereby
  • the terminal device may determine, according to the indication information, that the first DCI includes counting request information.
  • the indication information may be indicated in an explicit or implicit manner.
  • the indication information may be indicated in an explicit manner.
  • the first DCI includes indication information, and the indication information is used to indicate The first DCI includes counting request information.
  • the indication information is indicated in an implicit manner.
  • the standard predefines a specific domain, and the specific domain is used to indicate whether the first DCI includes counting request information. Since the first DCI includes the counting request information, correspondingly, the network device does not need to send the counting request information to the terminal device through another message, which improves the communication efficiency.
  • the first DCI includes first indication information, and the first indication information is used to indicate time-frequency resources of the counting request information and/or counting response information.
  • the terminal device receives the first DCI, receives the first indication information by descrambling the first DCI, and receives the counting request information at the time-frequency resource position of the counting request information indicated by the first indication information, or the terminal The device receives the first DCI, obtains the first indication information by descrambling the first DCI, and sends counting response information at the resource location indicated by the first indication information.
  • the first indication information may indicate one or more resource locations.
  • the network device may allocate the same first indication information to terminal devices interested in the same multicast service, that is, allocate the same one or more resource locations, so as to improve the resource utilization rate of the communication system.
  • the network device sends first indication information to the terminal device, where the first indication information is used to indicate the time-frequency resource of the counting request information and/or the counting response information.
  • the terminal device after receiving the first indication information, the terminal device receives the counting request information at the time-frequency resource position of the counting request information indicated by the first indication information, or the terminal device receives the first indication information, Counting response information is sent at the resource location indicated by the first indication information, the first indication information may indicate one or more resource locations, and the network device may allocate the same first indication information to terminal devices interested in the same multicast service , That is, the same one or more resource locations are allocated to improve the resource utilization of the communication system.
  • the method for the first indication information to indicate the time-frequency resource of the counting request information and/or the counting response information is the same as the time-domain position mode and the frequency-domain position mode of the first DCI in step S501, which will not be described in detail here.
  • the time-frequency resources can be reasonably used and resource waste can be avoided.
  • Step 504 The terminal device receives the first DCI from the network device.
  • the terminal device receives the first DCI from the network device according to the G-RNTI, and the first DCI is used for scheduling counting request information. Further, the terminal device may determine that the counting request information corresponds to the G-RNTI In other words, the terminal device can determine that the counting request information is used for statistical services. For example, the first DCI is scrambled by G-RNTI1, and the G-RNTI1 corresponds to a multicast service. After receiving the first DCI, the terminal device can determine that its scheduled counting request information is used for statistics. The number of terminal devices subscribing to the multicast service.
  • the network device can schedule counting request information by sending G-RNTI scrambled DCI, thereby realizing statistics on the number of terminal devices subscribing to the multicast service, and at the same time, saving additional signaling Consumption improves the communication efficiency of the communication system.
  • Step S505 The network device sends counting request information to the terminal device.
  • the counting request information is used to count the number of terminal devices subscribing to the multicast service.
  • the bearer counting request information can be many ways to implement the bearer counting request information, specifically:
  • Method 1 When media access control control element (MAC CE) is used to carry counting request information.
  • MAC CE media access control control element
  • the MAC subheader When the counting request information is carried by the MAC control unit, as shown in FIG. 6, the MAC subheader carries the logical channel identifier LCID with a special value to indicate the corresponding MAC CE to carry the counting request information.
  • Method 2 When the counting request information is carried by the control protocol data unit (Control PDU).
  • the Control PDU can be a radio link control sublayer protocol data unit (radio link control protocol data unit, RLC PDU) or a packet data convergence protocol sublayer protocol data unit (packet) data convergence protocol control protocol data unit, PDCP PDU).
  • RLC PDU radio link control protocol data unit
  • Packet packet data convergence protocol sublayer protocol data unit
  • PDCP PDU packet data convergence protocol control protocol data unit
  • a schematic diagram of the Control PDU carrying the counting request information is shown in Figure 7.
  • the PDU includes a D/C field, which is used to indicate whether the PDU is a control PDU or a data PDU.
  • the PDU type is used to indicate the type of the PDU.
  • the PDU type can use a special value to identify this Control PDU carrying counting request information.
  • the value of the PDU type is 1111, it means that it is carrying counting request information, and when the value of the PDU type is 0000, it means that it is carrying other types of messages.
  • the RRC message may be a newly introduced RRC message, such as a 5G multicast counting request message.
  • the terminal device receives the 5G multicast counting request message, it receives the counting request message.
  • the counting request information includes an access probability factor.
  • the access probability factor is used to indicate the probability of sending count response information.
  • the access probability factor may be one or more.
  • the access probability factor is 1, terminal devices in different RRC states share the access probability factor; when the access probability factor is multiple
  • the access probability factor is associated with the radio resource control RRC state of the terminal device.
  • the RRC state includes the RRC idle state, the RRC inactive state or the RRC connected state. Accordingly, the terminal device can decide to use it according to its own state. Which access probability factor.
  • the network device sends an access probability factor to the terminal device.
  • the access probability factor is used to indicate the probability of sending counting response information. Accordingly, the terminal device determines the access probability factor and the counting request information. Whether to reply to count response information.
  • the network device sends at least one access probability factor to the terminal device, and the access probability factor is associated with the radio resource control RRC state of the terminal device, where the RRC state includes the RRC idle state and the RRC inactive state. State or RRC connected state.
  • the network device configures different access probability factors for terminal devices in different states, or the network device can allow terminal devices in two states to share a probability factor, and terminal devices in another state are independent
  • the network device sends at least one access probability factor to the terminal device, and the at least one access probability factor corresponds to at least one RRC state one by one, for example, the network device sends the terminal device to the terminal device.
  • the device sends the access probability factor-idle state (Access probability factor-idle) and the access probability factor-connected state (Access probability factor-connected), which are used to indicate the access probability factors of different RRC states. Correspondingly, they are in RRC idle state.
  • the terminal device in the idle state uses the access probability factor-idle state to determine whether to reply the counting response information.
  • Step S506 The terminal device receives the counting request information from the network device.
  • the terminal device After receiving the counting request information sent by the network device, the terminal device replies with the counting response information; or after receiving the counting request information, the terminal device determines whether to reply the counting response information to the network device.
  • the methods of determination include:
  • the terminal device learns the subscribed multicast service that the network device wants to count according to the service identifier of the multicast service carried in the counting request information. If the terminal device subscribes to the multicast service, then the terminal device determines to reply with counting response information .
  • the access probability factor can be carried in the aforementioned MAC CE, Control PDU, or RRC message or can be carried in a broadcast message.
  • the method for determining the access probability factor according to the pre-acquired access probability factor includes: the network equipment configures the shared access probability factor, Correspondingly, terminal devices in different RRC states (RRC idle state/RRC inactive state/RRC connected state) share the access probability factor; if the network device configures the access probability factor associated with the RRC state, the terminal device must be based on its own The RRC state to determine which access probability factor to use.
  • the terminal device selects a random number from a preset range; if the random number is less than or equal to the access probability factor, send the counting response information to the network device.
  • a network device configures an access probability factor of 0.3 for terminal devices in different RRC states (RRC idle state/RRC inactive state/RRC connected state)
  • terminal devices in different RRC states share the probability factor 0.3, for example, in
  • the terminal device in the RRC idle state selects a random number 0.2 from 0-1, and compares this random number with the access probability factor.
  • the terminal device in the RRC idle state sends count response information to the network device;
  • the terminal device in the RRC inactive state selects a random number 0.1 from 0-1, and compares this random number with the access probability factor, because 0.1 ⁇ 0.3, the terminal device in the RRC inactive state sends count response information to the network device ;
  • the terminal device in the RRC connected state selects a random number 0.25 from 0-1, and compares this random number with the access probability factor, because 0.25 ⁇ 0.3, the terminal device in the RRC connected state sends count response information to the network device .
  • the access probability factor is associated with the radio resource control RRC state of the terminal device.
  • the network device configures different access probability factors for terminal devices in different states, or the network device can allow terminal devices in two states to share a probability Factor, the terminal device in another state uses a probability factor alone.
  • the network device sends at least one access probability factor to the terminal device, and the at least one access probability factor corresponds to at least one RRC state one by one.
  • the network device sends the access probability to the terminal device.
  • the factor-idle state (Access probability factor-idle) and the access probability factor-connected state (Access probability factor-connected) are used to indicate the access probability factors of different RRC states.
  • the terminal equipment in the RRC idle state is used Access probability factor-idle state to determine whether to reply to count response information.
  • the terminal device selects a random number from a preset range; if the random number is less than or equal to the access probability factor, send the counting response information to the network device.
  • a network device configures an access probability factor of 0.35 for a terminal device in the RRC idle state
  • a terminal device in the RRC inactive state configures an access probability factor of 0.4
  • a terminal device in the RRC connected state configures an access probability factor of 0.45
  • the terminal The device selects a random number 0.1 from the range of 0-1. Since the terminal device is in the RRC connection state, the access probability factor is 0.5. Since 0.1 ⁇ 0.5, the terminal device sends count response information to the network device.
  • a network device configures an access probability factor of 0.35 for terminal devices in the RRC idle state and RRC inactive state, and a terminal device in the RRC connected state configures an access probability factor of 0.4
  • the terminal device selects a random number from the range of 0-1 0.2, because the terminal device is in the RRC idle state, the access probability factor is 0.2, and because 0.1 ⁇ 0.5, the terminal device sends count response information to the network device.
  • the selected random number is less than or equal to the access probability factor, and the terminal device determines to send count response information to the network device.
  • the selected random number is greater than the access probability factor
  • the selected random number is greater than the access probability factor.
  • the entry probability factor is applicable when the terminal devices in different RRC states share the access probability factor, and the terminal devices in different RRC states use different access probability factors. Specifically, if the selected random number is greater than the access probability factor, there are three situations:
  • the first case the terminal device determines not to send counting response information to the network device.
  • the second case the terminal device selects a random number from 0-1 again, compares the random number with the access probability factor, and repeats the above process until the counting response information is sent or the maximum number of repetitions is reached.
  • the terminal device re-selects a random number from 0-1 to 0.5, because the random number 0.5 is greater than 0.3, the terminal device is again in 0-1 Choose a random number to compare with 0.3 until the count response message is sent or the number of comparisons reaches 10.
  • the third case the terminal device waits for a period of time and then selects a random number from 0-1 again, compares the random number with the access probability factor, and repeats the above process until the counting response information is sent or the maximum number of repetitions is reached.
  • the waiting period of time may be a fixed time value or a time value randomly selected from 0-T, where the fixed time value or T used to determine the waiting time may be configured by the network, specifically, it may be a network pass System message or RRC message configuration.
  • the terminal device determines whether to reply the count response information through the access probability factor, which can ease the use of channel resources and reduce the load of the network device, thereby improving the communication efficiency of the communication system.
  • Step S507 The terminal device sends counting response information to the network device.
  • Step S508 The network device receives the counting response information from the terminal device.
  • the counting response information is used to respond to the counting request information, and the counting response information includes: multicast service indication information, and the indication information is used to indicate subscription to the multicast service.
  • the counting response information includes at least one of the service identifier of the multicast service, the beam indication corresponding to the multicast service, the bandwidth part BWP indication corresponding to the multicast service, and the position indication information of the terminal device.
  • the counting response information is carried in the random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA. If the terminal device is in the RRC connected state, the counting response information is carried in the MAC CE, Control PDU, or RRC message.
  • the terminal device After the terminal device determines to send the counting response information to the network device, the terminal device can decide how to send the counting response information according to the RRC state it is in.
  • the first case When the terminal device is in the RRC idle state, it needs to initiate an RRC connection process to send count response information to the network device.
  • the count response information is carried in the random access message, including the following three options:
  • Solution 1 When the counting response information is carried in Msg1 or MsgA, the terminal device can send Msg1 (Msg1, preamble) or message A (MsgA) to the network device to inform the network device that the terminal device subscribes to the multicast service .
  • Msg1 Msg1, preamble
  • MsgA message A
  • the terminal device sends a dedicated preamble to the network device, and the network device knows that the terminal device subscribes to multicast service 1 according to the correspondence between the preamble and the multicast service identifier, or the terminal device sends a preamble to the network device, indicating that the terminal device subscribes to the multicast service.
  • Solution 2 When the counting response information is carried in Msg3, the terminal device can instruct the terminal device to subscribe by carrying a special cause value in message 3 (RRC establishment request message or RRC connection reestablishment message or RRC connection establishment message or RRC reestablishment message) Multicast services.
  • message 3 RRC establishment request message or RRC connection reestablishment message or RRC connection establishment message or RRC reestablishment message
  • the reason value is MBMS, which means that the terminal device subscribes to the multicast service;
  • the reason value is the multicast service identifier 1, which means that the terminal device subscribes to the multicast service 1.
  • the reason value is dedicated preamble, which means that the terminal device subscribes to the multicast service; or multiple dedicated preambles are used to correspond to which type of multicast service the terminal device specifically subscribes.
  • the terminal device can instruct the terminal device to subscribe through the bearer multicast service identifier in message 5 (RRC establishment complete message or RRC reestablishment complete message or RRC connection establishment complete message or RRC reestablishment complete message) Multicast services.
  • message 5 RRC establishment complete message or RRC reestablishment complete message or RRC connection establishment complete message or RRC reestablishment complete message
  • the multicast service is identified as multicast service 2, it means that the terminal device subscribes to multicast service 2.
  • the second case when the terminal device is in the RRC inactive state, it needs to initiate the RRC recovery process to send the counting response information to the network device.
  • the counting response information is carried in the random access message, and includes the following three options:
  • Solution 1 When the counting response information is carried in Msg1 or MsgA, the terminal device can send Msg1 (Msg1, preamble) or message A (MsgA) to the network device to inform the network device that the terminal device subscribes to the multicast service .
  • Msg1 Msg1, preamble
  • MsgA message A
  • the terminal device sends a dedicated preamble to the network device, and the network device knows that the terminal device subscribes to the multicast service 1 according to the corresponding relationship between the preamble preamble and the multicast service identifier, or the terminal device sends the preamble to the network device, indicating that the terminal device subscribes to the multicast service.
  • the terminal device can instruct the terminal device to subscribe to the multicast service through the bearer reason value in message 3 (RRC connection recovery request message or RRC recovery request message).
  • the reason value is MBMS, which means that the terminal device subscribes to the multicast service;
  • the reason value is the multicast service identifier 1, which means that the terminal device subscribes to the multicast service 1.
  • the reason value is dedicated preamble, which means that the terminal device subscribes to the multicast service; or multiple dedicated preambles are used to correspond to which type of multicast service the terminal device subscribes.
  • the terminal device can instruct the terminal device to subscribe to the multicast service by carrying the multicast service identifier in the message 5 (RRC recovery complete message or RRC connection recovery complete message).
  • the multicast service is identified as multicast service 2, it means that the terminal device subscribes to multicast service 2.
  • the third case When the terminal device is in the RRC connection state, it needs to send the counting response information through the MAC CE, control PDU or RRC message, and the counting response information is carried in the MAC CE, control PDU or RRC message.
  • the methods in the first case and the second case are also applicable to terminal equipment in the RRC connected state.
  • Solution 1 The terminal device can instruct the terminal device to subscribe to the first multicast service through the bearer reason value in the RRC establishment request message or the RRC recovery request message.
  • Solution 2 The terminal device can instruct the terminal device to subscribe to the multicast service through the preamble. There is a one-to-one correspondence between the preamble and the multicast service identifier, and the network device can know which multicast service the terminal device specifically subscribes to according to the received preamble.
  • the terminal device can indicate which multicast service the terminal specifically subscribes to by carrying the multicast service identification information in the counting response information.
  • the method further includes step S509: the terminal device determines to stop reporting the subscription status.
  • the terminal device determines to terminate the statistics process.
  • the first condition includes: not detecting the first DCI within a preset time period; or continuously detecting that the number of the first DCI reaches the first threshold; Or receive second indication information from the network device, where the second indication information is used to instruct the terminal device to terminate the statistical process.
  • the first threshold is configured by a network device.
  • the process of terminating the statistics may also be referred to as the process of exiting the statistics, or the process of stopping the statistics, and the preset time period may be configured by the network device or predefined by the protocol.
  • the configuration unit of the preset period of time may be an integer multiple of the transmission period of the first DCI. It can be understood that when the terminal device does not monitor the first DCI in N consecutive transmission periods of the first DCI, the terminal device Terminate the statistical process.
  • the terminal is still monitoring the first DCI after replying to the counting response information, which causes a waste of resources.
  • the first DCI is sent to the terminal device on the PDCCH channel.
  • the first DCI is used for scheduling count request information.
  • the terminal device descrambles the first DCI and obtains the count according to the parameters indicated by the first DCI. Request information.
  • the terminal device replies with counting response information.
  • the network device can count the number of terminal devices in the RRC idle state/RRC inactive state/RRC connected state that subscribe to the multicast service according to the counting response information. Then optimize the subsequent multicast service transmission control.
  • FIG. 8 is another communication method provided by an embodiment of the present application. The method includes but is not limited to the following steps:
  • Step S801 The network device sends the third downlink control information DCI to the terminal device.
  • the third DCI is used to indicate at least one counting request information.
  • the third DCI is scrambled by a preset wireless network identifier, or is scrambled by a special RNTI, and the third DCI is used to schedule counting request information for multiple multicast services
  • the third DCI scrambled by the special RNTI can schedule the counting request information of multiple multicast service groups at one time.
  • the special RNTI can be understood as an RNTI other than G-RNTI, for example, a parameter defined by the standard dedicated to scrambling the third DCI.
  • Method 1 The third DCI is scrambled through a special RNTI. Accordingly, the terminal device descrambles the third DCI through a special RNTI, and decorates the physical downlink shared channel through the parameters indicated by the third DCI. , PDSCH) to obtain the counting request information.
  • the third DCI is scrambled by a special RNTI, the third DCI includes third indication information, and the third indication information is used to indicate that the third DCI includes counting request information.
  • the third indication information may be indicated in an explicit or implicit manner.
  • the third indication information may be indicated in an explicit manner.
  • the third DCI includes the third indication information.
  • the third indication information is used to indicate that the third DCI includes counting request information.
  • the third indication information is indicated in an implicit manner.
  • the standard predefines a specific domain, and the specific domain is used to indicate whether the third DCI includes counting request information. Since the third DCI includes the counting request information, correspondingly, the network device does not need to send the counting request information to the terminal device through another message, and the terminal device descrambles the third DCI through a special RNTI and receives the counting request information.
  • the network device configures a first transmission period for the terminal device, and accordingly, the terminal device may use a special RNTI to periodically monitor the third DCI according to the first transmission period. In this way, the terminal device does not need to continuously monitor the third DCI, achieving the effect of saving power and avoiding resource waste.
  • the third DCI may be scrambled by paging radio network temporary identity (P-RNTI), and the third DCI is used to schedule paging information through paging radio network temporary identity (P-RNTI).
  • P-RNTI paging radio network temporary identity
  • the specific method for the call message to carry the counting request information is as follows:
  • the third DCI is scrambled by a special P-RNTI that is different from the normal P-RNTI.
  • the special P-RNTI and the normal RNTI that are different from the normal P-RNTI can be understood as existing
  • the paging message scheduled by the third DCI can not only be used to indicate changes in terminal equipment system information, but also public warning information Arrival, or the arrival of terminal services, it can also indicate the arrival of counting request information.
  • the third DCI is used to schedule paging messages, and the paging messages carry counting request information. Accordingly, the terminal device descrambles the third DCI through a special RNTI, and detects the related physical downlink shared channel ( The physical downlink shared channel, PDSCH) receives the paging message, thereby receiving the counting request information.
  • the physical downlink shared channel, PDSCH The physical downlink shared channel
  • the network device may send the third DCI through a special PO configuration different from the normal paging occasion (PO) configuration, and accordingly, the terminal device monitors the third DCI at the special PO configuration.
  • PO normal paging occasion
  • the third DCI is scrambled by a normal P-RNTI, the third DCI includes fourth indication information, and the fourth indication information is used to indicate that the third DCI includes counting request information, and the terminal device is receiving After reaching the third DCI, it may be determined according to the fourth indication information that the third DCI includes counting request information.
  • the fourth indication information may be indicated in an explicit or implicit manner. In a possible implementation, the fourth indication information may be indicated in an explicit manner.
  • the third DCI includes the fourth indication information.
  • the fourth indication information is used to indicate that the third DCI includes counting request information. In another possible implementation, the fourth indication information is indicated in an implicit manner.
  • the standard predefines a specific domain, and the specific domain is used to indicate whether the third DCI includes counting request information. Since the third DCI includes the counting request information, correspondingly, the network device does not need to send the counting request information to the terminal device through another message. Accordingly, the terminal device descrambles the third DCI through the normal P-RNTI and receives the counting request information. .
  • the third DCI is scrambled through the normal P-RNTI, and the third DCI is used to schedule paging messages.
  • the paging messages carry counting request information. Accordingly, the terminal equipment is resolved through the normal P-RNTI.
  • the third DCI is scrambled, and the paging message received on the relevant physical downlink shared channel (PDSCH) is detected through the parameters indicated by the third DCI, so as to receive the counting request information.
  • PDSCH physical downlink shared channel
  • the network device can send the third DCI to the terminal device in any one of the above four methods.
  • the network device before the network device sends the third DCI to the terminal device, the network device sends configuration information to the terminal device, and the configuration information is used to configure the parameters for receiving the third DCI, or the configuration information It is used to indicate the time-frequency position of the third DCI. It can be understood that the configuration information is used to configure parameters for receiving the third DCI.
  • the network device sends configuration information to the terminal device, and the manner in which the terminal device determines the time domain position and the frequency domain position where the third DCI appears according to the configuration information, reference may be made to step S501 in the foregoing embodiment.
  • Step S802 The terminal device receives the third downlink control information DCI from the network device.
  • the terminal device receives the third DCI from the network device according to a special RNTI, the third DCI is used to schedule counting request information for multiple multicast services, or receives the third DCI from the network device according to the P-RNTI, and The third DCI is used to schedule paging messages, and the paging messages carry counting request information.
  • the terminal device determines that the counting request information is used to count the number of terminal devices that subscribe to the multicast service.
  • the network device can schedule multiple multicast service counting request information or P-RNTI scrambled DCI scheduling paging message by sending a special RNTI, thereby realizing the ability to subscribe to the multicast service terminal The number of equipment is counted, and at the same time, additional signaling consumption is saved, and the communication efficiency of the communication system is improved.
  • Step S803 The network device sends counting request information to the terminal device.
  • the counting request information is used to count the number of terminal devices subscribing to the multicast service.
  • the bearer counting request information reference may be made to step S505 in the foregoing embodiment, and this step will not be repeated.
  • the counting request information includes the service identifier of the multicast service.
  • the counting request information includes the service identifier of the multicast service, which can make it clear that the network device wants to count and subscribe to specific one or more multicast services.
  • the counting request information includes multicast service 1, which means that the network device wants to count the number of terminal devices subscribing to the multicast service 1; or, the counting request information includes multicast service 1, multicast service 2, and multicast service 3. It means that the network device wants to count the number of terminal devices subscribing to multicast service 1, the number of terminal devices subscribing to multicast service 2, and the number of terminal devices subscribing to multicast service 3. That is, the network device can count by one Request information to count the number of terminal devices subscribing to multiple multicast services to improve the resource utilization of the communication system.
  • the counting request information includes an access probability factor.
  • the access probability factor is used to indicate the probability of sending count response information.
  • the access probability factor can be one or more.
  • the access probability factor is 1, terminal devices in different RRC states share the access probability factor; when there are multiple access probability factors ,
  • the access probability factor is associated with the radio resource control RRC state of the terminal device, where the RRC state includes the RRC idle state, the RRC inactive state or the RRC connected state. Accordingly, the terminal device can decide to use it according to its own state Which access probability factor.
  • the network device sends an access probability factor to the terminal device.
  • the access probability factor is used to indicate the probability of sending the counting response information. Accordingly, the terminal device determines the access probability factor and the counting request information. Whether to reply to count response information.
  • the network device sends at least one access probability factor to the terminal device, and the access probability factor is associated with the radio resource control RRC state of the terminal device, where the RRC state includes the RRC idle state and the RRC inactive state.
  • State or RRC connected state For example, network equipment configures different access probability factors for terminal equipment in different states, or network equipment can allow terminal equipment in two states to share one probability factor, and terminal equipment in another state Use a probability factor alone.
  • the network equipment configures the access probability factor for RRC idle terminal equipment to be 0.1
  • RRC inactive terminal equipment configures the access probability factor to 0.2
  • RRC connected terminal equipment configures the access probability The factor is 0.3
  • the network device sends probability factors 0.1, 0.2, and 0.3 to the terminal device.
  • the network device configures an access probability factor of 0.15 for terminal devices in the RRC idle state and RRC inactive state, and configures an access probability factor of 0.25 for terminal devices in the RRC connected state, and the network device sends an access probability factor of 0.15 and 0.25.
  • Step S804 The terminal device receives the counting request information from the network device.
  • step S506 in the foregoing embodiment, and this step will not be described in detail.
  • Step S805 The terminal device sends counting response information to the network device.
  • Step S806 The network device receives the counting response information from the terminal device.
  • the counting response information is used to respond to the counting request information.
  • step S508 in the foregoing embodiment, and this step will not be repeated.
  • the third DCI is sent to the terminal device on the PDCCH channel.
  • the third DCI is used for scheduling count request information.
  • the terminal device descrambles the third DCI and obtains the count according to the parameters indicated by the third DCI. Request information.
  • the terminal device replies with counting response information.
  • the network device can count the RRC idle/RRC inactive/RRC connected terminals that are receiving or interested in receiving multicast services based on the counting response information. The number of devices can further optimize the transmission control of multicast services and improve communication efficiency.
  • Figure 9 is another communication method provided by an embodiment of the present application.
  • the method includes but is not limited to the following steps:
  • Step S901 The network device sends MCCH configuration information to the terminal device.
  • the MCCH configuration information is used to configure the time-frequency resource location of the counting request information.
  • the MCCH configuration information can be carried in a broadcast message.
  • the MCCH configuration information may include: BWP information, time-frequency control resource location indication, search space, repetition period, and modification period, where the BWP information is used to indicate on which BWP the MCCH is sent, and the time-frequency control
  • the resource location indicator can also be called the CORESET indicator, which is used to indicate the frequency domain position that carries the MCCH and the number of symbols occupied in the time domain.
  • the repetition period is used to indicate how often the MCCH appears.
  • a modification period includes multiple repetition periods. The information carried by the MCCH is unchanged in a modification period.
  • the network device sends a multicast modified service information message to at least one terminal device through the MCCH channel.
  • the multicast modified service information message includes configuration information (used to periodically send the multicast modified service information message). ) And indication information.
  • the indication information is used to instruct the terminal device to trigger the multicast counting process.
  • the network device sends configuration information to the terminal device.
  • the configuration information is used to configure the time domain resource location for sending the counting request information.
  • the terminal device receives the counting request information carried through the MCCH channel according to the configuration information.
  • the MCCH configuration information in this embodiment is different from the configuration information in the 3G and LTE solutions.
  • the MCCH configuration information in this embodiment introduces some new attributes.
  • the MCCH configuration information includes BWP information, time-frequency control resource location indication, and search space. Search space, repetition period, and modification period.
  • the MCCH configuration information can not only be used to configure the time domain resource location for sending the counting request information, but also can be used to configure the frequency domain resource location for sending the counting request information.
  • Step S902 The terminal device receives the MCCH configuration information from the network device.
  • the MCCH configuration information is used to configure the time-frequency resource location of the counting request information, and accordingly, the terminal device obtains the counting request information at the time-frequency resource location of the counting request information through the MCCH configuration information.
  • Step S903 The network device carries the counting request information sent to the terminal device through the MCCH channel.
  • the MCCH channel can carry counting request information and/or counting response information, and the MCCH channel can also carry other multicast service scheduling related information, such as a multicast traffic channel (multicast traffic channel, MTCH) configuration set.
  • the service channel configuration set includes multiple multicast service channel configurations; each multicast service channel configuration includes: G-RNTI, DRX parameters, BWP information carrying MTCH, time-frequency control resource location indication, and search space indication.
  • the counting request information is used to count the number of terminal devices subscribing to the multicast service.
  • the counting request information includes the service identifier of the multicast service.
  • the counting request information includes the service identifier of the multicast service, which can make it clear that the network device wants to count the number of terminal devices that subscribe to a specific one or more multicast services.
  • the counting request information includes multicast service 1, which means that the network device wants to count the number of terminal devices subscribing to the multicast service 1; or, the counting request information includes multicast service 1, multicast service 2, and multicast service 3. It means that the network device wants to count the number of terminal devices subscribing to multicast service 1, the number of terminal devices subscribing to multicast service 2, and the number of terminal devices subscribing to multicast service 3. That is, network devices can count by one line Request information to count the number of terminal devices that are interested in multiple multicast services.
  • the counting request information includes an access probability factor.
  • step S505 For the relevant explanation and meaning of the access probability factor, refer to step S505, which will not be repeated here.
  • the network device sends an access probability factor to the terminal device.
  • the access probability factor is used to indicate the probability of sending the counting response information. Accordingly, the terminal device determines the access probability factor and the counting request information. Whether to reply to count response information.
  • the network device sends at least one access probability factor to the terminal device, and the access probability factor is associated with the radio resource control RRC state of the terminal device, where the RRC state includes the RRC idle state and the RRC inactive state. State or RRC connected state. For details, refer to step S505, which will not be repeated here. .
  • Step S904 The terminal device receives the counting request information from the network device.
  • the terminal device After receiving the counting request information sent by the network device, the terminal device replies with the counting response information; or after receiving the counting request information, the terminal device must determine whether to reply the counting response information to the network device. For the determination method, refer to step S506, which will not be repeated here.
  • Step S905 The terminal device sends counting response information to the network device.
  • Step S906 The network device receives the counting response information from the terminal device.
  • the counting response information is used to respond to the counting request information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate subscription to the multicast service.
  • the counting response information includes at least one of the service identifier of the multicast service, the beam indication corresponding to the multicast service, the bandwidth part BWP indication corresponding to the multicast service, and the position indication information of the terminal device.
  • the counting response information is carried in the random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA. If the terminal device is in the RRC connected state, the counting response information is carried in the MAC CE, Control PDU, or RRC message.
  • the terminal device After the terminal device determines to send the counting response information to the network device, the terminal device can decide how to send the counting response information according to the RRC state it is in. For details, refer to step S508, which will not be repeated here.
  • the MCCH configuration information indicates the location of the time-frequency resource
  • the counting request information is sent to the terminal device on the MCCH channel.
  • the terminal device replies to the counting after receiving the counting request information.
  • the network device can count the number of RRC idle/RRC inactive/RRC connected terminal devices that are receiving or interested in receiving multicast services according to the count response information, thereby optimizing the multicast service transmission control.
  • the existing MCCH mechanism in 3G or LTE cannot be applied to 5G, and the above implementation can solve the problem of MCCH adapting to 5G new features such as BWP and beam, thereby improving communication efficiency.
  • the method for determining the slot that can carry the MCCH mainly includes the following two steps: determining the effective minimum time unit; based on the method of determining the effective minimum time unit (slot), a method of determining the slot that carries the MCCH.
  • the access network device configures a certain value of subcarrier spacing for the terminal device, and determines whether the minimum time unit corresponding to the subcarrier spacing is valid for MBSFN.
  • the terminal device when each subframe corresponding to a certain time slot is configured by the network device for downlink MBSFN, the terminal device will receive the MBMS sent by the network device in such a time slot.
  • the network device is configured with subframe #1, subframe #2, subframe #3, subframe #6, subframe #7, and subframe #8 as reserved for MBSFN use
  • the first part black filled part
  • the subframes #1, #2, and #3 corresponding to slot#0 are reserved for downlink MBSFN use by network devices. Therefore, slot#0 meets the conditions, and the terminal device will receive the base station in slot#0 MBMS sent.
  • slot#1 For slot#1, because only the corresponding subframe #6 is an MBSFN subframe, and subframe #4 and subframe #5 are both non-MBSFN subframes, therefore, the terminal device will not receive and receive in slot#1.
  • MBMS sent by network equipment.
  • a method of determining the slot carrying the MCCH is introduced. Before introducing the method of determining the slot that carries the MCCH, first introduce the method of determining the subframe that carries the MCCH, which is specifically as follows:
  • the position of the subframe carrying the MCCH in the above-mentioned radio frame is indicated-10bit bitmap to indicate yes.
  • slot#6 Since all subframes corresponding to Slot#6 are configured as MBSFN subframes, according to the method of determining the effective minimum time unit (slot) as described above, it can be known that slot#6 is effective, that is, the slot is available. However, according to the method of determining the subframe that carries the MCCH, sf-AllocInfo-r16 indicates the subframe that can carry the MCCH in a certain radio frame that satisfies the above formula in 10 bits. Slot#6 includes subframe#19, subframe#20, and subframe.
  • subframe#19 determines whether MCCH can be carried according to the sf-AllocInfo-r16 corresponding to radio frame #N+1, and subframe#20 and subframe#21 are based on the sf-AllocInfo-r16 corresponding to radio frame #N+2
  • the bit corresponding to subframe#19 is set to 1
  • the special sub-carrier spacing can be 0.37kHz, 0.37kHz/2, this solution does not impose restrictions on this.
  • the method for determining whether a valid slot can carry MCCH includes the following schemes:
  • Solution 1 The terminal device decides by itself, based on the current standard to determine the effective slot, according to the following options, it is clear whether the effective slot can carry the MCCH:
  • Option 1 For a valid slot, if any subframe corresponding to the valid slot can carry MCCH, it is considered that this valid slot can carry MCCH.
  • Option 2 For a valid slot, if all subframes in the same radio in the valid slot can carry MCCH, then this valid slot is considered to carry MCCH.
  • Scheme 2 Network equipment implementation, the network equipment avoids slot across wireless frames (no standard impact) through configuration.
  • Solution 3 The network device informs the terminal device of the MCCH slot by sending indication information.
  • the network device can indicate the terminal device to carry the MCCH slot by displaying the indication information without the terminal device's own judgment.
  • the network device can instruct the terminal device to carry the MCCH slot information according to any of the following options. That is, the base station can use any of the following options to indicate which slot of the terminal device can carry the MCCH.
  • the terminal device can send according to the network device To determine the slot information that bears the MCCH:
  • Option1 Indicate which slots can carry MCCH through bitmap.
  • each bit in the bitmap corresponds to a slot, and the corresponding relationship between the bit and the slot is predetermined, and the network equipment and the terminal device have the same understanding of the corresponding relationship.
  • the number of time slots corresponding to 0.37khz is 13, and 13 bits can be used to indicate which of the 13 slots can carry MCCH respectively.
  • the bit position is "1"
  • the bit is identified
  • the corresponding slot can carry MCCH, and vice versa.
  • this bitmap can be identified by the sf-AllocInfo field, but since this field was originally 10bit in the existing protocol, when this field is used to indicate which slots can carry MCCH, it is required in the interpretation of the field Modification:
  • this sf-AllocInfo-r16 field indicates which slots can carry MCCH through 13bits respectively.
  • the 13-bit sf-AllocInfo field is used to indicate the slot that can carry the MCCH; otherwise, If the terminal device is not configured with 0.37kHz, the first 10 bits of the 13-bit sf-AllocInfo-r16 field indicate which radio subframes in a certain radio frame can carry MCCH.
  • Option2 indicates the slot number that can carry the MCCH.
  • the information of the slot number carrying the MCCH can be carried in a system message or an RRC message.
  • the slots that can carry the MCCH can be slot#6 and slot#8, so that the network device indicates slot#6 and slot#8 to the terminal device.
  • Option3 Indicate that the terminal device is valid across the slot of the wireless frame through 1bit or 1 field.
  • the 1 bit or 1 field can be added in SIB13, or added in the MBSFN-AreaInfo field.
  • the valid slot across the wireless frame is valid by default. (Because only the slot judgment across wireless frames is problematic, it can be indicated by only 1bit or 1 field).
  • FIG. 11 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the device may be the aforementioned network device or a device in the network device.
  • the apparatus 1100 may include a processing unit 1101 and a communication unit 1102, wherein the detailed description of each unit is as follows.
  • the processing unit 1101 is configured to send the first downlink control information DCI to the terminal device through the communication unit 1102, the first DCI is used for scheduling counting request information, and the first DCI is scrambled by the wireless network temporary identifier;
  • the processing unit 1101 is further configured to send the counting request information to the terminal device through the communication unit 1102, and the counting request information is used to count the number of terminal devices that are receiving or are interested in receiving multicast services;
  • the processing unit 1101 is further configured to receive counting response information from the terminal device through the communication unit 1102, and the counting response information is used to respond to the counting request information.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network identifier.
  • the counting request information includes the service identifier of the multicast service.
  • the processing unit 1101 is further configured to send an access probability factor to the terminal device through the communication unit 1102, where the access probability factor is used to indicate the probability of sending the counting response information.
  • the processing unit 1101 is further configured to send at least one access probability factor to the terminal device through the communication unit 1102, the access probability factor and the radio resource control RRC state of the terminal device Correlation, where the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the processing unit 1101 is further configured to send first indication information to the terminal device through the communication unit 1102, where the first indication information is used to indicate the time-frequency resource of the counting response information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the BWP indication of the bandwidth portion corresponding to the multicast service, and the position indication information of the terminal device At least one of them.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the processing unit 1101 is further configured to send configuration information to the terminal device through the communication unit 1102, and the configuration information is used to configure parameters for receiving the first DCI.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupancy duration
  • the transmission period is the first DCI transmission interval
  • the first offset is a parameter for calculating the transmission start position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time-frequency resource position of the first DCI
  • the search space indicator is used
  • the occupation duration is the continuous duration indicated by the position of the time-frequency control resource.
  • the processing unit 1101 is further configured to send a second DCI to the terminal device through the communication unit 1102, and the second DCI is used to schedule the first message, where the second DCI is When scrambled by the wireless network temporary identifier, the processing unit 1101 is further configured to send a first message to the terminal device through the communication unit 1102, the first message including the configuration information, wherein the first message is a system message Or multicast messages or RRC messages.
  • the processing unit 1101 is further configured to send second indication information to the terminal device through the communication unit 1102, and the second indication information is used to instruct the terminal device to terminate the statistical process.
  • FIG. 12 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • the device may be the aforementioned terminal device or a device in the terminal device.
  • the apparatus 1200 may include a processing unit 1201 and a communication unit 1202, wherein the detailed description of each unit is as follows.
  • the processing unit 1201 is configured to receive the first downlink control information DCI from the network device through the communication unit 1202, the first DCI is used for scheduling counting request information, and the first DCI is scrambled by the wireless network temporary identifier;
  • the processing unit 1201 is configured to receive the counting request information from the network device through the communication unit 1202, and the counting request information is used to count the number of terminal devices that are receiving or are interested in receiving multicast services;
  • the processing unit 1201 is configured to send the counting response information to the network device through the communication unit 1202, and the counting response information is used to respond to the counting request information.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network temporary identifier.
  • the counting request information includes the service identifier of the multicast service.
  • the processing unit 1201 is further configured to receive an access probability factor from the network device through the communication unit 1202, where the access probability factor is used to indicate the probability of sending the counting response information.
  • the processing unit 1201 is further configured to receive at least one access probability factor from the network device through the communication unit 1202, and the access probability factor is related to the radio resource control RRC of the terminal device.
  • the state is associated, where the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the processing unit 1201 is further configured to select a random number from a preset range; the processing unit is further configured to pass the communication when the random number is less than or equal to the access probability factor
  • the unit 1202 sends the counting response information to the network device.
  • the processing unit 1201 is further configured to receive the first indication information sent by the network device through the communication unit 1202, where the first indication information is used to indicate the time-frequency resource of the counting response information.
  • the processing unit 1201 is further configured to receive the first indication information sent by the network device through the communication unit 1202, where the first indication information is used to indicate the time-frequency resource of the counting response information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the corresponding partial bandwidth BWP indication of the multicast service, and the location where the terminal device is located. At least one item of location indication information.
  • the counting response information is carried in a random access message, and the random access messages are Msg1, Msg3, Msg5, and MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the processing unit 1201 is further configured to receive configuration information from the network device through the communication unit 1202, and the configuration information is used to configure the parameters of the first DCI.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupancy duration
  • the transmission period is a period of the first DCI.
  • the transmission interval, the first offset is a parameter for calculating the transmission start position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time-frequency resource position of the first DCI
  • the search space indicator is used to indicate For the search range and/or search mode of the first DCI
  • the occupation duration is the continuous duration of the time-frequency control resource.
  • the processing unit 1201 is further configured to receive a second DCI from the network device through the communication unit 1202, and the second DCI is used to schedule the first message, wherein the second DCI Is scrambled by the wireless network temporary identifier, the processing unit 1201 is further configured to send the first message to the terminal device through the communication unit 1202, and the first message includes configuration information, wherein the first message A message is a system message or a multicast message or an RRC message.
  • the processing unit 1201 is further configured to exit the statistical process when a first condition is met, and the first condition includes: the first DCI is not monitored within a preset time period; It is not detected that the number of the first DCI reaches a preset value; or the second indication information from the network device is received, and the second indication information is used to instruct the terminal device to exit the statistics process.
  • FIG. 13 is a communication device 1300 provided by an embodiment of the present application.
  • the device 1300 includes a processor 1301 and a transceiver 1303.
  • the device further includes a memory 1302, the processor 1301 and the memory 1302.
  • the transceiver 1303 are connected to each other through the bus 1304.
  • the memory 1302 includes but is not limited to random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or Portable read-only memory (compact disc read-only memory, CD-ROM), the memory 1302 is used for related computer programs and data.
  • the transceiver 1303 is used to receive and send data.
  • the processor 1301 may be one or more central processing units (CPU).
  • CPU central processing units
  • the CPU may be a single-core CPU or a multi-core CPU.
  • the processor 1301 in the device 1300 reads the computer program stored in the memory 1302, and is used to perform the following operations:
  • the counting request information is used to count the number of terminal devices that are receiving or are interested in receiving multicast services
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network identifier.
  • the counting request information includes the service identifier of the multicast service.
  • the processor 1301 is further configured to send an access probability factor to the terminal device through the transceiver 1303, where the access probability factor is used to indicate the probability of sending the counting response information.
  • the processor 1301 is further configured to send at least one access probability factor to the terminal device through the transceiver 1303, where the access probability factor is related to the radio resource control RRC state of the terminal device
  • the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the processor 1301 is further configured to send first indication information to the terminal device through the transceiver 1303, where the first indication information is used to indicate the time-frequency resource of the counting response information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the BWP indication of the bandwidth portion corresponding to the multicast service, and the position indication information of the terminal device At least one of them.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the processor 1301 is further configured to send configuration information to the terminal device through the transceiver 1303, where the configuration information is used to configure parameters for receiving the first DCI.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupancy duration
  • the transmission period is the first DCI transmission interval
  • the first offset is a parameter for calculating the transmission start position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time-frequency resource position of the first DCI
  • the search space indicator is used
  • the occupation duration is the continuous duration indicated by the position of the time-frequency control resource.
  • the processor 1301 is further configured to send a second DCI to the terminal device through the transceiver 1303, and the second DCI is used to schedule the first message, wherein the second DCI is passed through If the wireless network temporary identifier is scrambled, a first message is sent to the terminal device, where the first message includes the configuration information, and the first message is a system message, a multicast message, or an RRC message.
  • the processor 1301 is further configured to send second indication information to the terminal device through the transceiver 1303, where the second indication information is used to instruct the terminal device to terminate the statistical process.
  • FIG. 14 is a communication device 1400 provided by an embodiment of the present application.
  • the device 1400 includes a processor 1401 and a transceiver 1403.
  • the device further includes a memory 1402, the processor 1401 and the memory 1402.
  • the transceiver 1403 are connected to each other through the bus 1404.
  • the memory 1402 includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), or Portable read-only memory (compact disc read-only memory, CD-ROM), the memory 1402 is used for related computer programs and data.
  • the transceiver 1403 is used to receive and send data.
  • the processor 1401 may be one or more central processing units (CPUs).
  • CPUs central processing units
  • the CPU may be a single-core CPU or a multi-core CPU.
  • the processor 1401 in the device 1400 reads the computer program stored in the memory 1402, and is used to perform the following operations:
  • first downlink control information DCI from a network device, where the first DCI is used for scheduling counting request information, and the first DCI is scrambled by a temporary wireless network identifier;
  • the counting response information is sent to the network device, and the counting response information is used to respond to the counting request information.
  • the counting request information includes the service identifier of the multicast service.
  • the wireless network temporary identifier is a group wireless network temporary identifier or a preset wireless network temporary identifier.
  • the processor 1401 is further configured to receive an access probability factor from the network device through the transceiver 1403, where the access probability factor is used to indicate the probability of sending the counting response information.
  • the processor 1401 is further configured to receive at least one access probability factor from the network device through the transceiver 1403, the access probability factor and the radio resource control RRC state of the terminal device Correlation, where the RRC state includes an RRC idle state, an RRC inactive state, or an RRC connected state.
  • the processor 1401 is further configured to select a random number from a preset range; if the random number is less than or equal to the access probability factor, send the count to the network device through the transceiver 1403 Response information.
  • the processor 1401 is further configured to receive the first indication information sent by the network device through the transceiver 1403, where the first indication information is used to indicate the time-frequency resource of the counting response information.
  • the counting response information includes: indication information of the multicast service, and the indication information is used to indicate that the multicast service is being received or is interested in receiving the multicast service.
  • the counting response information includes: the service identifier of the multicast service, the beam indication corresponding to the multicast service, the corresponding partial bandwidth BWP indication of the multicast service, and the location where the terminal device is located. At least one item of location indication information.
  • the counting response information is carried in a random access message, and the random access message is Msg1, Msg3, Msg5, or MsgA.
  • the counting response information is carried in an RRC message, a medium access control control element MAC CE, or a control protocol data unit.
  • the processor 1401 is further configured to receive configuration information from the network device through the transceiver 1403, and the configuration information is used to configure parameters for receiving the first DCI.
  • the configuration information includes at least one of a transmission period, a first offset, a time-frequency control resource location indicator, a search space indicator, and an occupancy duration
  • the transmission period is a period of the first DCI.
  • Transmission interval the first offset is a parameter for calculating the transmission start position of the first DCI
  • the time-frequency control resource position indicator is used to indicate the time-frequency resource position of the first DCI
  • the search space indicator is used to indicate For the search range and/or search mode of the first DCI
  • the occupation duration is the continuous duration of the time-frequency control resource.
  • the processor 1401 is further configured to receive a second DCI from the network device through the transceiver 1403, the second DCI is used to schedule the first message, and the second DCI is If scrambled by the wireless network temporary identifier, the first message is sent to the terminal device, and the first message includes configuration information, where the first message is a system message or a multicast message or an RRC message.
  • the terminal device terminates the statistical process, and the first condition includes: not detecting the first DCI within a preset time period; or continuously not detecting the first DCI The number of the first DCI reaches a preset value; or receiving second indication information from the network device, where the second indication information is used to instruct the terminal device to exit the statistical process.
  • An embodiment of the present application also provides a chip system.
  • the chip system includes at least one processor, a memory, and an interface circuit.
  • the memory, the transceiver, and the at least one processor are interconnected by wires, and the at least one memory
  • a computer program is stored therein; when the computer program is executed by the processor, the method flow shown in FIG. 5 is realized.
  • the embodiment of the present application also provides a computer-readable storage medium in which a computer program is stored, and when it runs on a processor, the method flow shown in FIG. 5 is realized.
  • the embodiment of the present application also provides a computer program product.
  • the computer program product runs on a terminal, the method flow shown in FIG. 5 is realized.
  • the embodiment of the present application also provides a communication system.
  • the communication system includes a network device and a terminal device. When it runs on the terminal device or the network device, the method flow shown in FIG. 5 is implemented.
  • the computer program can be stored in a computer readable storage medium.
  • the computer program During execution, it may include the procedures of the foregoing method embodiments.
  • the aforementioned storage media include: ROM or random storage RAM, magnetic disks or optical disks and other media that can store computer program codes.

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Abstract

本申请实施例提供一种通信方法及相关设备，该方法包括：网络设备向终端设备发送第一下行控制信息DCI，该第一DCI用于调度计数请求信息；然后网络设备向该终端设备发送该计数请求信息，通过该计数请求信息统计正在接收或感兴趣接收的多播业务的终端设备的个数；相应的，终端设备接收计数请求信息并确定是否回复计数响应信息，相应的，网络设备接收计数响应信息并进行统计，采用本申请实施例，能够统计正在接收或感兴趣接收的多播业务的终端设备的个数，优化多播业务的维护和传输，提升终端设备的调控灵活性。

Description

一种通信方法及相关设备
本申请要求于2020年4月7日提交中国专利局、申请号为202010264252.0、申请名称为“一种通信方法及相关设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种通信方法及相关设备。
背景技术
在第5代地面蜂窝无线通信系统中，终端设备的工作状态可以分为三种，连接态，空闲态和非激活态，由于只有连接态的终端设备才能支持多播传输，如果该网络设备提供服务的空闲态和非激活态的终端设备订阅多播业务但是网络设备无法知道这些终端设备的情况，从而会导致网络设备无法对多播业务的传输做出准确的决策订阅多播业务因此如何统计正在接收或感兴趣接收多播业务的终端设备的个数，优化多播业务的维护和传输，提升终端设备的调控灵活性是本领域人员正在解决的技术问题。
发明内容
本申请实施例公开了一种通信方法及相关设备，能够统计正在接收或感兴趣接收多播业务的终端设备的个数。
本申请实施例第一方面公开了一种通信方法，所述方法适用于网络设备，包括：
向终端设备发送第一下行控制信息DCI，所述第一DCI用于调度计数请求信息，所述第一DCI是通过无线网络临时标识加扰的；
向所述终端设备发送所述计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
接收来自所述终端设备的计数响应信息，所述计数响应信息用于响应所述计数请求信息。
在上述方法中，网络设备通过在PDCCH信道向终端设备发送第一DCI，该第一DCI用于调度计数请求信息，终端设备通过解扰第一DCI，根据第一DCI指示的参数获得计数请求信息，终端设备接收到该计数请求信息后回复计数响应信息，网络设备能根据该计数响应信息统计正在接收或感兴趣接收多播业务的RRC空闲态/RRC非激活态/RRC连接态的终端设备的个数，进而优化多播业务传输控制。
在一种可选的方案中，所述无线网络临时标识为组无线网络临时标识或预设无线网络标识。
在一种可选的方案中，所述计数请求信息包括所述多播业务的业务标识。
在上述方法中，当计数请求信息中包括多播业务的业务标识时，表明了网络设备具体想要统计对哪一种多播业务感兴趣的终端设备的个数。
在又一种可选的方案中，所述方法还包括：向所述终端设备发送接入概率因子，所述 接入概率因子用于指示发送所述计数响应信息的概率。
在上述方法中，接入概率因子能够辅助终端设备是否回复计数响应信息。
在又一种可选的方案中，所述方法还包括：向所述终端设备发送至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在又一种可选的方案中，所述方法还包括：向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或所述计数响应信息的时频资源。
在上述方法中，网络设备向终端设备发送第一指示信息，该第一指示信息用于指示计数响应信息或计数请求信息的时频资源，通过这样的方式，能够合理利用时频资源。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务对应的带宽部分BWP指示和所述终端设备的位置指示信息中至少一项。
在又一种可选的方案中，所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
在又一种可选的方案中，所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在又一种可选的方案中，所述方法还包括：向所述终端设备发送配置信息，所述配置信息用于配置接收所述第一DCI的参数。
在上述方法中，网络设备向终端设备发送配置信息，终端设备根据该配置信息监听第一DCI，而无需一直持续的监听第一DCI，造成资源浪费。
在又一种可选的方案中，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，其中，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索范围和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
在又一种可选的方案中，向所述终端设备发送第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；向所述终端设备发送所述第一消息，所述第一消息包括所述配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在又一种可选的方案中，所述方法还包括：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终止统计过程。
在上述方法中，当终端设备回复计数响应信息后，接收到第二指示信息，终止统计过程，避免当回复计数响应信息后，还在监听第一DCI，造成资源浪费。
本申请实施例第二方面公开了一种通信方法，所述方法适用于终端设备，包括：
接收来自网络设备的第一下行控制信息DCI，所述第一DCI用于调度计数请求信息， 所述第一DCI是通过无线网络临时标识加扰的；
接收来自所述网络设备的所述计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
向所述网络设备发送所述计数响应信息，所述计数响应信息用于响应所述计数请求信息。
在上述方法中，网络设备通过在PDCCH信道向终端设备发送第一DCI，该第一DCI用于调度计数请求信息，终端设备通过解扰第一DCI，根据第一DCI指示的参数获得计数请求信息，终端设备接收到该计数请求信息后回复计数响应信息，网络设备能根据该计数响应信息统计正在接收或感兴趣接收多播业务的RRC空闲态/RRC非激活态/RRC连接态的终端设备的个数，进而优化多播业务传输控制。
在一种可选的方案中，所述无线网络临时标识为组无线网络临时标识或预设无线网络临时标识。
在一种可选的方案中，所述计数请求信息包括所述多播业务的业务标识。
在上述方法中，当计数请求信息中包括多播业务的业务标识时，表明了网络设备具体想要统计对哪一种多播业务感兴趣的终端设备的个数。
在又一种可选的方案中，所述方法还包括：接收来自所述网络设备的接入概率因子，所述接入概率因子用于指示发送所述计数响应信息的概率。
在上述方法中，接入概率因子能够辅助终端设备是否回复计数响应信息。
在又一种可选的方案中，所述方法还包括：接收来自所述网络设备的至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在又一种可选的方案中，所述方法还包括：从预设范围内选择随机数；若所述随机数小于或等于所述接入概率因子，向所述网络设备发送所述计数响应信息。
在又一种可选的方案中，所述方法还包括：接收所述网络设备发送的第一指示信息，所述第一指示信息用于指示所述计数请求消息和/或计数响应信息的时频资源。
在上述方法中，网络设备向终端设备发送第一指示信息，该第一指示信息用于指示计数请求消息和/或计数响应信息的时频资源，通过这样的方式，能够合理利用时频资源。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务的对应的部分带宽BWP指示和所述终端设备所处的位置指示信息中至少一项。
在又一种可选的方案中，若所述终端设备处于RRC空闲态或RRC非激活态，所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
在又一种可选的方案中，若所述终端设备处于RRC连接态，所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在又一种可选的方案中，所述方法还包括：接收来自所述网络设备的配置信息，所述配置信息用于配置接收所述第一DCI的参数。
在上述方法中，网络设备向终端设备发送配置信息，终端设备根据该配置信息监听第一DCI，而无需一直持续的监听第一DCI，造成资源浪费。
在又一种可选的方案中，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索范围和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
在又一种可选的方案中，接收来自所述网络设备的第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；
向所述终端设备发送所述第一消息，所述第一消息包括配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在又一种可选的方案中，所述方法还包括：
在满足第一条件时，所述终端设备终止统计过程，所述第一条件包括：
在预设时间段内未监听到所述第一DCI；或
连续未监听到所述第一DCI的个数达到预设值；或
接收来自所述网络设备的第二指示信息，所述第二指示信息用于指示所述终端设备终止所述统计过程。
在上述方法中，当终端设备回复计数响应信息后，终端设备终止统计过程，避免当回复计数响应信息后，还在监听第一DCI，造成资源浪费。
本申请实施例第三方面公开了一种通信方法，所述方法适用于网络设备，包括：
向终端设备发送第一下行控制信息DCI，所述第一DCI包括计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收多播业务的所述终端设备的个数，所述第一DCI是通过无线网络临时标识加扰的；
接收来自所述终端设备计数响应信息，所述计数响应信息用于响应所述计数请求信息。
在上述方法中，网络设备通过在PDCCH信道向终端设备发送第一DCI，该第一DCI包括计数请求信息，终端设备通过解扰第一DCI，获得计数请求信息，终端设备接收到该计数请求信息后回复计数响应信息，网络设备能根据该计数响应信息统计正在接收或感兴趣接收多播业务的RRC空闲态/RRC非激活态/RRC连接态的终端设备的个数，进而优化多播业务传输控制。
在一种可选的方案中，所述无线网络临时标识为组无线网络临时标识或预设无线网络标识。
在一种可选的方案中，所述第一DCI包括第一指示信息，所述第一指示信息用于指示所述第一DCI包括所述计数请求信息。
在一种可选的方案中，所述计数请求信息包括所述多播业务的业务标识。
在上述方法中，当计数请求信息中包括多播业务的业务标识时，表明了网络设备具体想要统计对哪一种多播业务感兴趣的终端设备的个数。
在又一种可选的方案中，所述方法还包括：向所述终端设备发送接入概率因子，所述 接入概率因子用于指示发送所述计数响应信息的概率。
在上述方法中，接入概率因子能够辅助终端设备是否回复计数响应信息。
在又一种可选的方案中，所述方法还包括：向所述终端设备发送至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在又一种可选的方案中，所述方法还包括：向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或计数响应信息的时频资源。
在上述方法中，网络设备向终端设备发送第一指示信息，该第一指示信息用于指示计数请求信息和/或计数响应信息的时频资源，通过这样的方式，能够合理利用时频资源。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务对应的带宽部分BWP指示和所述终端设备的位置指示信息中至少一项。
在又一种可选的方案中，所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
在又一种可选的方案中，所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在又一种可选的方案中，所述方法还包括：向所述终端设备发送配置信息，所述配置信息用于配置接收所述第一DCI的参数。
在上述方法中，网络设备向终端设备发送配置信息，终端设备根据该配置信息监听第一DCI，而无需一直持续的监听第一DCI，造成资源浪费。
在又一种可选的方案中，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，其中，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的位置信息和搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
在又一种可选的方案中，向所述终端设备发送第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；向所述终端设备发送第一消息，所述第一消息包括所述配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在又一种可选的方案中，所述方法还包括：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所述终端设备终止统计过程。
在上述方法中，当终端设备回复计数响应信息后，接收到第二指示信息，终止统计过程，避免当回复计数响应信息后，还在监听第一DCI，造成资源浪费。
本申请实施例第四方面公开了一种通信方法，所述方法适用于终端设备，包括：
接收来自网络设备的第一下行控制信息DCI，所述第一DCI包括计数请求信息，所述 计数请求信息用于统计正在接收或感兴趣接收多播业务的所述终端设备的个数，所述第一DCI是通过无线网络临时标识加扰的；
向所述网络设备发送计数响应信息，所述计数响应信息用于响应所述计数请求信息。
在上述方法中，网络设备通过在PDCCH信道向终端设备发送第一DCI，该第一DCI包括计数请求信息，终端设备通过解扰第一DCI，获得计数请求信息，终端设备接收到该计数请求信息后回复计数响应信息，网络设备能根据该计数响应信息统计正在接收或感兴趣接收多播业务的RRC空闲态/RRC非激活态/RRC连接态的终端设备的个数，进而优化多播业务传输控制。
在一种可选的方案中，所述无线网络临时标识为组无线网络临时标识或预设无线网络临时标识。
在一种可选的方案中，所述第一DCI包括第一指示信息，所述第一指示信息用于指示所述第一DCI包括所述计数请求信息。
在一种可选的方案中，所述计数请求信息包括所述多播业务的业务标识。
在上述方法中，当计数请求信息中包括多播业务的业务标识时，表明了网络设备具体想要统计对哪一种多播业务感兴趣的终端设备的个数。
在又一种可选的方案中，所述方法还包括：接收来自所述网络设备的接入概率因子，所述接入概率因子用于指示发送所述计数响应信息的概率。
在上述方法中，接入概率因子能够辅助终端设备是否回复计数响应信息。
在又一种可选的方案中，所述方法还包括：接收来自所述网络设备的至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在又一种可选的方案中，所述方法还包括：从预设范围内选择随机数；若所述随机数小于或等于所述接入概率因子，向所述网络设备发送所述计数响应信息。
在又一种可选的方案中，所述方法还包括：接收所述网络设备发送的第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或计数响应信息的时频资源。
在上述方法中，网络设备向终端设备发送第一指示信息，该第一指示信息用于指示计数请求信息和/或计数响应信息的时频资源，通过这样的方式，能够合理利用时频资源。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务的对应的部分带宽BWP指示和所述终端设备所处的位置指示信息中至少一项。
在又一种可选的方案中，若所述终端设备处于RRC空闲态或RRC非激活态，所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
在又一种可选的方案中，若所述终端设备处于RRC连接态，所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在又一种可选的方案中，所述方法还包括：接收来自所述网络设备的配置信息，所述配置信息用于配置接收所述第一DCI的参数。
在上述方法中，网络设备向终端设备发送配置信息，终端设备根据该配置信息监听第一DCI，而无需一直持续的监听第一DCI，造成资源浪费。
在又一种可选的方案中，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，其中，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索位置范围信息和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
在又一种可选的方案中，接收来自所述网络设备的第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；向所述终端设备发送所述第一消息，所述第一消息包括配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在又一种可选的方案中，所述方法还包括：在满足第一条件时，所述终端设备终止统计过程，所述第一条件包括：在预设时间段内未监听到所述第一DCI；或连续未监听到所述第一DCI的个数达到预设值；或接收来自所述网络设备的第二指示信息，所述第二指示信息用于指示所述终端设备终止所述统计过程。
在上述方法中，当终端设备回复计数响应信息后，终端设备终止统计过程，避免当回复计数响应信息后，还在监听第一DCI，造成资源浪费。
本申请实施例第五方面公开了一种通信装置，所述装置可以例如为网络设备或者网络设备中的芯片，所述装置包括：
处理单元，用于通过通信单元向终端设备发送第一下行控制信息DCI，所述第一DCI用于调度计数请求信息，所述第一DCI是通过无线网络临时标识加扰的；
所述处理单元，用于通过所述通信单元向所述终端设备发送所述计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
所述处理单元，用于通过所述通信单元接收来自所述终端设备的计数响应信息，所述计数响应信息用于响应所述计数请求信息。
在一种可选的方案中，所述无线网络临时标识为组无线网络临时标识或预设无线网络标识。
在又一种可选的方案中，所述计数请求信息包括所述多播业务的业务标识。
在又一种可选的方案中，所述处理单元，用于通过所述通信单元向所述终端设备发送接入概率因子，所述接入概率因子用于指示发送所述计数响应信息的概率。
在又一种可选的方案中，所述处理单元，用于通过所述通信单元向所述终端设备发送至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在又一种可选的方案中，所述处理单元，用于通过所述通信单元向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或所述计数响应信息的时频资源。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务对应的带宽部分BWP指示和所述终端设备的位置指示信息中至少一项。
在又一种可选的方案中，所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
在又一种可选的方案中，所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在又一种可选的方案中，所述处理单元，还用于通过所述通信单元向所述终端设备发送配置信息，所述配置信息用于配置接收所述第一DCI的参数。
在又一种可选的方案中，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，其中，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索范围和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
在又一种可选的方案中，所述处理单元，还用于通过所述通信单元向所述终端设备发送第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；所述处理单元，还用于通过所述通信单元向所述终端设备发送第一消息，所述第一消息包括所述配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在又一种可选的方案中，所述处理单元，还用于通过所述通信单元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所述终端设备终止统计过程。
关于第五方面或各种可选的实施方式所带来的技术效果，可参考对于第一方面或相应的实施方式的技术效果的介绍。
本申请实施例第六方面公开了一种通信装置，所述装置可以例如为终端设备或者终端设备中的芯片，所述装置包括：
处理单元，用于通过通信单元接收来自网络设备的第一下行控制信息DCI，所述第一DCI用于调度计数请求信息，所述第一DCI是通过无线网络临时标识加扰的；
所述处理单元，还用于通过所述通信单元接收来自所述网络设备的所述计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
所述处理单元，还用于通过所述通信单元向所述网络设备发送所述计数响应信息，所述计数响应信息用于响应所述计数请求信息。
在一种可选的方案中，所述无线网络临时标识为组无线网络临时标识或预设无线网络临时标识。
在又一种可选的方案中，述计数请求信息包括所述多播业务的业务标识。
在又一种可选的方案中，所述处理单元，还用于通过所述通信单元接收来自所述网络 设备的接入概率因子，所述接入概率因子用于指示发送所述计数响应信息的概率。
在又一种可选的方案中，所述处理单元，还用于通过所述通信单元接收来自所述网络设备的至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在又一种可选的方案中，所述处理单元，还用于从预设范围内选择随机数；所述处理单元，还用于通过所述通信单元若所述随机数小于或等于所述接入概率因子，向所述网络设备发送所述计数响应信息。
在又一种可选的方案中，所述处理单元，还用于通过所述通信单元接收所述网络设备发送的第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或所述计数响应信息的时频资源。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务的对应的部分带宽BWP指示和所述终端设备所处的位置指示信息中至少一项。
在又一种可选的方案中，所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
在又一种可选的方案中，所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在又一种可选的方案中，所述处理单元，还用于通过所述通信单元接收来自所述网络设备的配置信息，所述配置信息用于配置接收所述第一DCI的参数。
在又一种可选的方案中，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置的参数，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索范围和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
在又一种可选的方案中，所述处理单元，还用于通过所述通信单元接收来自所述网络设备的第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；所述处理单元，还用于通过所述通信单元向所述终端设备发送所述第一消息，所述第一消息包括配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在又一种可选的方案中，所述处理单元，还用于在满足第一条件时，终止统计过程，所述第一条件包括：在预设时间段内未监听到所述第一DCI；或连续未监听到所述第一DCI的个数达到预设值；或通过通信单元接收来自所述网络设备的第二指示信息，所述第二指示信息用于指示所述终端设备终止所述统计过程。
关于第六方面或各种可选的实施方式所带来的技术效果，可参考对于第二方面或相应的实施方式的技术效果的介绍。
本申请实施例第七方面公开了一种通信装置，所述装置包括至少一个处理器和收发器，其中，所述至少一个处理器用于通过所述收发器与其它装置通信，所述存储器用于存储计算机程序，所述处理器调用所述计算机程序，用于执行以下操作：
通过收发器向终端设备发送第一下行控制信息DCI，所述第一DCI用于调度计数请求信息，所述第一DCI是通过无线网络临时标识加扰的；
通过收发器向所述终端设备发送所述计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
通过收发器接收来自所述终端设备的计数响应信息，所述计数响应信息用于响应所述计数请求信息。
在一种可选的方案中，所述无线网络临时标识为组无线网络临时标识或预设无线网络标识。
在又一种可选的方案中，所述计数请求信息包括所述多播业务的业务标识。
在又一种可选的方案中，所述处理器，还用于通过所述收发器向所述终端设备发送接入概率因子，所述接入概率因子用于指示发送所述计数响应信息的概率。
在又一种可选的方案中，所述处理器，还用于通过所述收发器向所述终端设备发送至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在又一种可选的方案中，所述处理器，还用于通过所述收发器向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或所述计数响应信息的时频资源。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务对应的带宽部分BWP指示和所述终端设备的位置指示信息中至少一项。
在又一种可选的方案中，所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
在又一种可选的方案中，所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在又一种可选的方案中，所述处理器，还用于通过所述收发器向所述终端设备发送配置信息，所述配置信息用于配置接收所述第一DCI的参数。
在又一种可选的方案中，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，其中，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索范围和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
在又一种可选的方案中，所述处理器，还用于通过所述收发器向所述终端设备发送第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时 标识加扰的；所述处理器，还用于通过所述收发器向所述终端设备发送第一消息，所述第一消息包括所述配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在又一种可选的方案中，所述处理器，还用于通过所述收发器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所述终端设备终止统计过程。
关于第七方面或各种可选的实施方式所带来的技术效果，可参考对于第一方面或相应的实施方式的技术效果的介绍。
本申请实施例第八方面公开了一种通信装置，所述装置包括至少一个处理器和收发器，其中，所述至少一个处理器用于通过所述收发器与其它装置通信，所述存储器用于存储计算机程序，所述处理器调用所述计算机程序，用于执行以下操作：
通过收发器接收来自网络设备的第一下行控制信息DCI，所述第一DCI用于调度计数请求信息，所述第一DCI是通过无线网络临时标识加扰的；
通过收发器接收来自所述网络设备的所述计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
通过收发器向所述网络设备发送所述计数响应信息，所述计数响应信息用于响应所述计数请求信息。
在一种可选的方案中，所述无线网络临时标识为组无线网络临时标识或预设无线网络临时标识。
在又一种可选的方案中，所述计数请求信息包括所述多播业务的业务标识。
在又一种可选的方案中，所述处理器，还用于通过所述收发器接收来自所述网络设备的接入概率因子，所述接入概率因子用于指示发送所述计数响应信息的概率。
在又一种可选的方案中，所述处理器，还用于通过所述收发器接收来自所述网络设备的至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在又一种可选的方案中，所述处理器，还用于从预设范围内选择随机数；若所述随机数小于或等于所述接入概率因子，通过所述收发器向所述网络设备发送所述计数响应信息。
在又一种可选的方案中，所述处理器，还用于通过所述收发器接收所述网络设备发送的第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或所述计数响应信息的时频资源。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
在又一种可选的方案中，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务的对应的部分带宽BWP指示和所述终端设备所处的位置指示信息中至少一项。
在又一种可选的方案中，所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
在又一种可选的方案中，所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在又一种可选的方案中，所述处理器，还用于通过所述收发器接收来自所述网络设备的配置信息，所述配置信息用于配置接收所述第一DCI的参数。
在又一种可选的方案中，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索范围和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
在又一种可选的方案中，所述处理器，还用于通过所述收发器接收来自所述网络设备的第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；所述处理器，还用于通过所述收发器向所述终端设备发送所述第一消息，所述第一消息包括配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在又一种可选的方案中，所述处理器，还用于在满足第一条件时，终止统计过程，所述第一条件包括：在预设时间段内未监听到所述第一DCI；或连续未监听到所述第一DCI的个数达到预设值；或接收来自所述网络设备的第二指示信息，所述第二指示信息用于指示所述终端设备终止所述统计过程。
关于第八方面或各种可选的实施方式所带来的技术效果，可参考对于第二方面或相应的实施方式的技术效果的介绍。
本申请实施例第九方面公开了一种通信系统，该系统包括网络设备和终端设备，其中，所述网络设备可以执行第一方面、第三方面中任意一方面或任意一方面的可选的方案所述方法，所述终端设备可以执行第二方面、第四方面中任意一方面或任意一方面的可选的方案所述的方法。
本申请实施例第十方面公开了一种芯片，所述芯片包括至少一个处理器和接口电路，可选的，所述芯片还包括存储器，所述存储器、所述接口电路和所述至少一个处理器通过线路互联，所述至少一个存储器中存储有计算机程序；所述计算机程序被所述处理器执行时实现第一方面、第二方面、第三方面和第四方面中任意一方面或者任意一方面的可选的方案所描述的方法。
本申请实施例第十一方面公开了一种计算机可读存储介质，所述计算机存储介质存储有计算机程序，所述计算机程序当被处理器执行时实现第一方面、第二方面、第三方面和第四方面中任意一方面或者任意一方面的可选的方案所描述的方法。
本申请实施例第十二方面公开了一种计算机产品，当所述计算机程序产品在处理器上运行时，实现实现第一方面、第二方面、第三方面和第四方面中任意一方面或者任意一方面的可选的方案所描述的方法。
附图说明
以下对本申请实施例用到的附图进行介绍。
图1是本申请实施例提供的一种5G NR系统双通道智能单播的无线接入网的架构图；
图2是本申请实施例提供的一种LTE系统中MBMS网络架构示意图；
图3是本申请实施例提供的一种LTE的counting机制的流程示意图；
图4是本申请实施例提供的一种3G的counting机制的流程示意图；
图5是本申请实施例提供的一种通信方法流程示意图；
图6是本申请实施例提供的一种承载计数请求信息的MAC CE的示意图；
图7是本申请实施例提供的一种承载计数请求信息的Control PDU的示意图；
图8是本申请实施例提供的一种通信方法流程示意图；
图9是本申请实施例提供的又一种通信方法流程示意图；
图10是本申请实施例提供的一种网络设备预留给MBSFN使用的子帧示意图；
图11是本申请实施例提供的一种通信装置结构示意图；
图12是本申请实施例提供的又一种通信装置结构示意图；
图13是本申请实施例提供的又一种通信装置结构示意图；
图14是本申请实施例提供的又一种通信装置结构示意图。
具体实施方式
下面结合本申请实施例中的附图对本申请实施例进行描述。
1)终端设备，包括向用户提供语音和/或数据连通性的设备，具体的，包括向用户提供语音的设备，或包括向用户提供数据连通性的设备，或包括向用户提供语音和数据连通性的设备。例如可以包括具有无线连接功能的手持式设备、或连接到无线调制解调器的处理设备。该终端设备可以经无线接入网(radio access network，RAN)与核心网进行通信，与RAN交换语音或数据，或与RAN交互语音和数据。该终端设备可以包括用户设备(user equipment，UE)、无线终端设备、移动终端设备、设备到设备通信(device-to-device，D2D)终端设备、车到一切(vehicle to everything，V2X)终端设备、机器到机器/机器类通信(machine-to-machine/machine-type communications，M2M/MTC)终端设备、物联网(internet of things，IoT)终端设备、轻型终端设备(light UE)、能力降低的用户设备(reduced capability UE，REDCAP UE)、订户单元(subscriber unit)、订户站(subscriber station)，移动站(mobile station)、远程站(remote station)、接入点(access point，AP)、远程终端(remote terminal)、接入终端(access terminal)、用户终端(user terminal)、用户代理(user agent)、或用户装备(user device)等。例如，可以包括移动电话(或称为“蜂窝”电话)，具有移动终端设备的计算机，便携式、袖珍式、手持式、计算机内置的移动装置等。例如，个人通信业务(personal communication service，PCS)电话、无绳电话、会话发起协议(session initiation protocol，SIP)话机、无线本地环路(wireless local loop，WLL)站、个人数字助理(personal digital assistant，PDA)等设备。还包括受限设备，例如功耗较低的设备，或存储能力有限的设备，或计算能力有限的设备等。例如包括条码、射频识别(radio frequency identification，RFID)、传感器、全球定位系统(global positioning system，GPS)、激光扫描器等信息传感设备。
作为示例而非限定，在本申请实施例中，该终端设备还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备或智能穿戴式设备等，是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称，如眼镜、手套、手表、服饰及鞋等。可穿戴设 备即直接穿在身上，或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备，更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能，例如：智能手表或智能眼镜等，以及只专注于某一类应用功能，需要和其它设备如智能手机配合使用，如各类进行体征监测的智能手环、智能头盔、智能首饰等。
而如上介绍的各种终端设备，如果位于车辆上(例如放置在车辆内或安装在车辆内)，都可以认为是车载终端设备，车载终端设备例如也称为车载单元(on-board unit，OBU)。
本申请实施例中，终端设备还可以包括中继(relay)。或者理解为，能够与基站进行数据通信的都可以看作终端设备。
本申请实施例中，用于实现终端设备的功能的装置可以是终端设备，也可以是能够支持终端设备实现该功能的装置，例如芯片系统，该装置可以被安装在终端设备中。本申请实施例中，芯片系统可以由芯片构成，也可以包括芯片和其他分立器件。本申请实施例提供的技术方案中，以用于实现终端的功能的装置是终端设备为例，描述本申请实施例提供的技术方案。
2)网络设备，例如包括接入网(access network，AN)设备，例如基站(例如，接入点)，可以是指接入网中在空口通过一个或多个小区与无线终端设备通信的设备，或者例如，一种车到一切(vehicle-to-everything，V2X)技术中的网络设备为路侧单元(road side unit，RSU)。基站可用于将收到的空中帧与IP分组进行相互转换，作为终端设备与接入网的其余部分之间的路由器，其中接入网的其余部分可包括IP网络。RSU可以是支持V2X应用的固定基础设施实体，可以与支持V2X应用的其他实体交换消息。网络设备还可协调对空口的属性管理。例如，网络设备可以包括长期演进(long term evolution，LTE)系统或高级长期演进(long term evolution-advanced，LTE-A)中的演进型基站(NodeB或eNB或e-NodeB，evolutional Node B)，或者也可以包括第五代移动通信技术(the 5th generation，5G)NR系统(也简称为NR系统)中的下一代节点B(next generation node B，gNB)或者也可以包括云接入网(cloud radio access network，Cloud RAN)系统中的集中式单元(centralized unit，CU)和分布式单元(distributed unit，DU)，本申请实施例并不限定。
网络设备还可以包括核心网设备，核心网设备例如包括访问和移动管理功能(access and mobility management function，AMF)、用户面功能(user plane function，UPF)或会话管理功能(session management function，SMF)等。
本申请实施例中，用于实现网络设备的功能的装置可以是网络设备，也可以是能够支持网络设备实现该功能的装置，例如芯片系统，该装置可以被安装在网络设备中。在本申请实施例提供的技术方案中，以用于实现网络设备的功能的装置是网络设备为例，描述本申请实施例提供的技术方案。
3)无线资源控制(radio resource control，RRC)状态，终端设备有3种RRC状态：RRC连接态(connected态)、RRC空闲态(idle态)和非激活态(inactive态)。
RRC连接态(或，也可以简称为连接态。在本文中，“连接态”和“RRC连接态”，是同一概念，两种称呼可以互换)：终端设备与网络建立了RRC连接，可以进行数据传输。
RRC空闲态(或，也可以简称为空闲态。在本文中，“空闲态”和“RRC空闲态”，是 同一概念，两种称呼可以互换)：终端设备没有与网络建立RRC连接，基站没有存储该终端设备的上下文。如果终端设备需要从RRC空闲态进入RRC连接态，则需要发起RRC连接建立过程。
RRC非激活态(或，也可以简称为非激活态。在本文中，“去活动态”、“去激活态”、“非激活态”、“RRC非激活态”和“RRC去激活态”，是同一概念，这几种称呼可以互换)：终端设备之前进入了RRC连接态，然后基站释放了RRC连接，但是基站保存了该终端设备的上下文。如果该终端设备需要从RRC非激活态再次进入RRC连接态，则需要发起RRC恢复过程(或者称为RRC连接恢复过程)。RRC恢复过程相对于RRC建立过程来说，时延更短，信令开销更小。但是基站需要保存终端设备的上下文，会占用基站的存储开销。
4)LTE中频分双工(frequency division duplexing，FDD)帧结构，目前，LTE FDD的一个无线帧分为10个子帧(subframe)、每个子帧是长度为1ms，不同的子载波间隔，对应帧结构中的slot长度、以及slot和子帧之间的关系是不同，具体子载波间隔与子帧、时隙、slot数/子帧如下表1所示：
表1
Figure PCTCN2021085360-appb-000001
上表中三种序号(序号1、序号2和序号3)对应的帧结构分别如下：
(1)、Δf为{2.5kHz/7.5kHz/15kHz}对应的帧结构中，1帧等于10ms，1帧等于10个子帧，1个子帧包含2个时隙。对于2.5kHz，每个时隙长度为0.5ms，每个时隙包含1个含有循环前缀(cyclic prefix，CP)的正交频分复用(orthogonal frequency division Multiplexing，OFDM)符号。
(2)、Δf为1.25kHz对应的帧结构中，1帧等于10ms，1帧等于10个子帧，一个子帧等于1个时隙，1个子帧等于1ms。
(3)、Δf为0.37kHz对应的帧结构中，每个时隙的时间长度为3ms，每个时隙包含一个含有CP的OFDM符号。在满足条件nf mod 4＝0的起始40ms间隔内，共有13个时隙，按从0到12递增编号，在此40ms内时隙0位置开始于30720Ts。其中，nf是无线帧编号，Ts是基本时间单元。
5)现有的多播/组播单频网络(multicast broadcast single frequency network，MBSFN)配置过程是：网络设备通过信息元素(information element，IE)多媒体广播组播服务网络子帧配置(MBSFN-SubframeConfig)来配置网络中可预留给下行多媒体广播组播服务网络(multimedia broadcast multicast service network，MBSFN)使用的子帧，在 MBSFN-SubframeConfig配置中，网络设备通过无线帧分配时间radioframeAllocationPeriod和无线帧分配偏移值radioframeAllocationOffset来配置MBSFN子帧会在哪些无线帧中，然后再通过子帧分配subframeAllocation和子帧分配-v1430subframeAllocation-v1430来具体指示在MBSFN子帧具体是哪几个子帧。具体配置如表2。
表2
Figure PCTCN2021085360-appb-000002
在表2中，(1)、radioFrameAllocationPeriod,radioFrameAllocationOffset用于指示MBSFN子帧出现的无线帧位置，当满足公式：SFN mod radioFrameAllocationPeriod＝radioFrameAllocationOffset时，对应的无线帧即为包含MBSFN子帧的，其中，SFN(System Frame Number)为系统帧编号,n1对应数值1，n2对应数值2。
(2)、subframeAllocation，用于指示满足(1)中radioFrameAllocationPeriod,radioFrameAllocationOffset约束公式的无线帧中具体分配了哪几个子帧作为MBSFN子帧。
(3)、fourFrames，用一串bit位来指示连续4个无线帧中出现MBSFN子帧的位置，当某个比特位置于“1”，则表示对应子帧被分配用于MBSFN；对于FDD，可能被分配给子帧#1,#2,#3,#6,#7,and#8。
(4)、ourFrames-v1430，用一串bit位来指示连续4个无线帧中出现MBSFN子帧位置，对于FDD：还可以配置子帧#4和#9为MBSFN子帧。
如上介绍了本申请实施例涉及的一些概念，下面介绍本申请实施例的技术特征。
请参见图1，图1是本发明实施例提供的一种通信系统100的结构示意图，该系统100 可以包括网络设备111、网络设备110、终端设备101、终端设备102和终端设备103。应理解，可以应用本申请实施例的方法的系统100中可以包括更多或者更少的网络设备或终端设备。网络设备和终端设备可以是硬件，也可以是从功能上划分的软件或者以上二者的结合。网络设备和终端设备之间可以通过其他设备或网元通信。在该系统中网络设备110可以与多个终端设备进行数据传输，即网络设备110向终端设备101-终端设备103发送下行数据，当然，终端设备101-终端设备103也可以向网络设备110发送上行数据。在本申请实施例中的方法可以应用于图1所示的系统100中。该网络设备111和网络设备110可以为上述所描述的任意一种举例的网络设备。该终端设备101-终端设备103可以为上述所描述的任意一种举例的终端设备。举例来说，在图1中，虚线表示控制面连接，实线表示用户数据包的发送路径。终端设备101-终端设备103都与网络设备110有连接，对于每个终端设备分别配置了小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)和用于单播承载的数据无线承载(data radio bearer，DRB)，同时DRB还关联一个组无线网络临时标识(group radio network temporary identifier，G-RNTI)，通过G-RNTI和C-RNTI调度实现单播与多播之间的动态转换。图中终端设备101-终端设备103接收同一业务，每个终端设备都有单播承载，即基于C-RNTI接收数据包的通道，网络设备110同时为终端设备101-终端设备103还配置了相同的G-RNTI。在采用C-RNTI调度的情况下，网络设备110可以将同一数据包分别调度给终端设备101-终端设备103，此时是利用单播调度。在采用G-RNTI调度数据包的情况下，网络设备110调度一份数据包终端设备101-终端设备103都能收到。
在LTE系统中，多媒体广播多播业务(multimedia broadcast multicast service，MBMS)业务从第三代合作伙伴计划版本9(3rd generation partnership project release 9，3GPP Rel-9)开始引入，包括网络架构和接口协议，以及RAN侧引入多播/组播单频网络(multicast broadcast single frequency network，MBSFN)区域。第三代合作伙伴计划版本10(3rd generation partnership project release 10，3GPP Rel-10)到第三代合作伙伴计划版本12(3rd generation partnership project release 12，3GPP Rel-12)继续持续性增强，包括计数counting机制，多频点部署和增强型载波聚合等增强特性，第三代合作伙伴计划版本13(3rd generation partnership project release 13，3GPP Rel-13)引入单小区点到点(single cell point to multi-point，SC-PTM)技术，实现单播组播动态调度，但仍基于Rel-9MBMS的网络架构和流程。第三代合作伙伴计划版本14(3rd generation partnership project release 14，3GPP Rel-14)和第三代合作伙伴计划版本16(3rd generation partnership project release 16，3GPP Rel-16)引入电视服务增强技术(enhancement for TV service，EN-TV)及其增强技术，基于MBMS专有载波，面向高塔高功率的大范围MBSFN部署。
如图2所示，图2是LTE系统中MBMS网络架构示意图。相比于单播，引入了多个MBMS专有网元以及相应的多个接口协议，比如广播/多播业务中心(broadcast/multicast service center，BM-SC)，多小区/多播协作实体(multi-cell/multicast coordination entity,MCE)和MBMS网关(Multimedia Broadcast Multicast Service Gateway，MBMS-GW)，标准和实现复杂，不易于网络部署。BM-SC主要实现对演进型多媒体广播/多播业务(evolved multimedia broadcast/multicast services，eMBMS)业务的分发和控制功能。BM-SC作为内容 提供商eMBMS业务的传输入口，是eMBMS会话的发起者，提供调度和交付eMBMS业务、以及安全key管理的功能等。MCE是LTE eMBMS为实现多小区传输而引入的逻辑实体，负责对其连接的MBSFN区域内基站的无线资源进行分配和eMBMS会话管理。MBMS-GW负责传递MBMS会话控制消息至移动管理节点功能(mobility management entity，MME)，并将MBMS业务数据转发至基站。
在LTE系统中，SC-PTM是一种多播传输技术，网络设备通过组无线网络临时标识(group-radio network temporary identity，G-RNTI)来同时向多个终端设备调度业务数据，每个G-RNTI可以关联一个MBMS业务。SC-PTM有一个控制信道单小区组播控制信道(single cell multicast control channel，SC-MCCH)和一个单小区组播传输信道(single cell multicast transport channel，SC-MTCH)，这两个逻辑信道都映射到下行共享信道(downlink shared channel，DL-SCH)上。其中控制信道SC-MCCH上包含业务标识和接收广播业务逻辑信道(multicast traffic channel，MTCH)的时间信息，SC-MTCH用来传输业务数据。终端设备接收SC-MTCH中多播业务数据的过程如下：终端设备接收来自网络设备的系统消息，该系统消息中包括传输SC-PTM业务的控制信息，即SC-MCCH的配置信息，终端设备通过系统消息就可以知道如何来接收SC-MCCH，在接收SC-MCCH，即SC-MTCH的配置信息后，终端设备通过SC-MTCH的配置信息和相应的物理下行控制信道(physical downlink control channel，PDCCH)的调度信息即可以接收SC-MTCH中的多播业务数据。而在5G NR系统中，如图1所示，虚线表示控制面连接，实线表示用户数据的发送路径。三个终端设备都与网络设备有连接，且每个终端设备分别设置了小区无线网络临时标识(Cell-radio network temporary identifier，C-RNTI)和用于单播承载的数据无线承载(data radio bearer，DRB)，同时DRB还关联一个G-RNTI，通过G-RNTI和C-RNTI调度实现单播与多播之间的动态转换。图中三个终端设备接收同一业务，每个终端设备都有单播承载，即基于C-RNTI接收数据的通道，网络设备采用单播方式将同一份多播配置信息分别发送给每个对该业务感兴趣的多个终端设备，基站同时为三个终端设备还配置了相同的G-RNTI，采用广播的方式将多播配置信息发送给各个终端设备，该多播配置信息包括G-RNTI、部分带宽(bandwidth part,BWP)、非连续接收(discontinuous reception,DRX)等相关配置。
目前，在LTE系统采用counting机制统计对多播业务感兴趣的连接态的终端设备的个数。如图3所示，图3表示LTE的counting机制。网络设备通过多播控制信道(multicast control channel，MCCH)向至少一个终端设备发送多播计数请求消息，该消息中承载多播业务标识信息，该多播业务标识信息用于告知终端设备网络设备想要统计对具体某项多播业务感兴趣的终端设备的个数，终端设备收到网络设备的多播计数请求信息后，向该网络设备发送多播计数响应信息，该多播计数响应信息承载终端设备感兴趣的多播业务标识信息，网络设备可根据该计数响应信息统计对多播业务感兴趣的连接态的终端设备的个数。
在第三代移动通信(the 3th generation，3G)系统采用counting机制统计对多播业务感兴趣的连接态或空闲态的终端设备的个数。如图4所示，图4表示3G的counting机制。网络设备通过MCCH信道向至少一个终端设备发送多播修改服务信息消息，该多播修改服务信息消息包括配置信息(用于周期发送该多播修改服务信息消息)和指示信息，该指示信息用于指示终端设备触发多播计数的过程，终端设备接收到多播修改服务信息消息中的 指示信息后，触发多播计数过程，在该多播计数过程中，终端设备根据配置信息接收网络设备周期发送的多播接入信息消息，此多播接入信息消息包括接入概率指示、多播业务标识指示，其中，接入概率指示是为了防止大量终端设备向网络设备发送多播计数响应信息而加重网络负荷，多播业务标识用于指示终端设备具体对某一项多播业务感兴趣的进行回复计数响应信息。终端设备接收多播接入信息消息后，向网络设备发送多播计数响应信息，具体该多播计数响应信息包括与多播相关的RRC原因值。网络设备可根据该计数响应信息统计对多播业务感兴趣的连接态的终端设备的个数。终端设备在多播接入信息消息的发送周期内接收不到多播接入信息消息，则终端设备退出多播计数过程。
上述LTE的counting机制仅仅适用于统计对多播业务感兴趣的连接态的终端设备的个数，而无法统计对多播感兴趣的空闲态和非激活态的终端设备的个数，并且多播计数请求消息的发送需要依赖于MCCH信道，在3G的counting机制中，多播修改服务信息消息的发送也需要依赖MCCH信道。因此如何统计对多播感兴趣的终端设备的个数以及现有的MCCH机制适用5G新特性，提高通信效率是本领域人员正在解决的技术问题。为了解决上述技术问题，本申请提出了如下解决方案。
请参见图5，图5是本申请实施例提供的一种通信方法，该方法包括但不限于如下步骤：
步骤S501:网络设备向所述终端设备发送配置信息。
具体地，该步骤S501是可选的步骤。该配置信息用于配置接收第一DCI的参数，或者，所述配置信息用于指示第一DCI的时频位置，可以理解，该配置信息包括指示终端设备接收第一DCI的配置参数。该配置信息可以包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，发送周期用于指示第一DCI的发送间隔，第一偏移量用于指示该第一DCI的发送起始位置，该时频控制资源位置指示用于指示第一DCI的时频资源位置，该搜索空间指示用于指示该第一DCI的搜索范围和/搜索方式，即该终端设备在什么位置/怎样搜索该第一DCI。占用时长用于指示传输所述第一DCI的持续时间。
其中，网络设备向该终端设备发送配置信息的方式可以有多种。
在一种可能的示例中，网络设备向该终端设备发送第二DCI，该第二DCI用于调度第一消息，然后，网络设备向该终端设备发送第一消息，该第一消息包括该配置信息。
具体地，该第二DCI是通过无线网络临时标识加扰的；该第一消息为系统消息或者多播消息或者RRC消息，该无线网络临时标识为组无线网络临时标识或者特殊无线网络临时标识或者系统无线网络临时标识(system information RNTI，SI-RNTI)，该特殊的无线网络临时标识可以是除了G-RNTI和SI-RNTI之外的其他无线网络临时标识。当该第二DCI是由SI-RNTI加扰，则第一消息为系统消息，若第二DCI是由G-RNTI加扰的，则第一消息为多播消息，相应的，终端设备通过G-RNTI解扰第二DCI，检测相关的PDSCH信道接收多播消息，从而接收配置信息，并根据配置信息进入统计过程，此时，网络设备根据配置信息周期性的发送第一DCI，该第一DCI是用过G-RNT加扰的，该第一DCI用于调度计数请求信息，终端设备根据配置信息持续周期性的监听第一DCI，直至通过G-RNTI解扰 第一DCI，检测相关的PDSCH信道接收计数请求信息或者终止统计过程，具体终端设备确定终止统计过程的条件在步骤S509中详细描述。可选地，在发送第二DCI之前，网络设备向该终端设备发送系统消息，系统消息中包括第二配置信息，该第二配置信息用于配置接收第二DCI的参数，该第二配置信息用于指示第二DCI的时频资源位置。
在又一种示例中，网络设备向该终端设备发送系统消息，该系统消息包括该配置信息。在又一种可能的实例中，网络设备向该终端设备发送RRC消息，该RRC消息包括该配置信息。在又一种可能的实例中，网络设备向该终端设备发送多播消息，该多播消息包括该配置信息。
在网络设备向所述终端设备发送配置信息之后，终端设备根据该配置信息进入统计过程，根据配置信息确定接收第一DCI的时域位置和/或频域位置，周期性的持续监听第一DCI，其中，终端设备根据配置信息确定接收第一DCI的时域位置方式可以有多种：
在一种可能的示例中，终端设备通过时频控制资源位置指示信息确定。其中，该时频控制资源位置指示包括控制资源的时域位置指示和/或控制资源的频域位置指示。该控制资源的时域位置指示方式可以包括：方式1：通过一个绝对时刻指示，例如，可以指示X日X时X分X秒X毫秒，具体的时刻指示粒度不做限制；或者，可以指示一个无线帧帧号、或无线帧号+子帧号、或无线帧号+子帧号+时隙号，例如，如控制资源的时域位置指示为无线帧号(system frame number,SFN)X，对应的终端设备在该无线帧号X处接收第一DCI。方式2：通过一个相对时刻指示，例如在终端设备收到配置信息时刻后的相对时刻指示对应时刻点，即为控制资源的时域位置。该时刻可以是协议预定义的或者是网络设备配置的。
在另一种可能的示例中，终端设备通过发送周期和第一偏移量确定第一DCI的发送位置。
具体地，该发送周期用于指示第一DCI的发送间隔，第一偏移量用于指示该第一DCI的发送起始位置。
例如，网络设备向终端设备发送第一DCI之前，网络设备向终端设备发送由组无线网络临时标识加扰的第二DCI，第二DCI用于调度RRC消息，配置信息承载于RRC消息中，则终端设备通过组无线网络临时标识解扰第二DCI，获得RRC消息中的配置信息，该配置信息包括发送周期T和第一偏移量offset，终端设备根据SFN(系统帧号，随时间变化)和公式SFN mod T＝offset，计算满足如下条件的SFN，即发送第一DCI的时域SFN位置，则终端设备在收到该配置信息后进入统计过程(多播计数过程)，在该发送第一DCI的时域SFN位置处监听第一DCI，直至终端设备成功接收第一DCI或者终止多播计数过程。可选地，在确定第一DCI的时域SFN位置后，可以进一步通过指示信息来指示满足如上条件的SFN对应的系统无线帧中，可以发送第一DCI的子帧位置、或者发送第一DCI的时隙位置、或者发送第一DCI的符号位置。具体地，可以通过位图bitmap的形式来承载此指示信息。
举个例子，如果通过位图bitmap来指示发送第一DCI的子帧位置，由于一个无线帧中包括10个子帧，可通过10bit来指示哪些子帧可以发送第一DCI，10个bit分别对应子帧0～子帧9，当某个bit位置为1时，表示该bit位对应的子帧可以用来发送第一DCI，反之。
在又一种可能的示例中，终端设备通过网络设备提供的起始位置和长度(联合编码) 的有效组合的索引，来确定第一DCI的发送位置，其中所述索引包含在配置信息中。
举个例子，如果网络设备提供的是起始符号和长度的有效组合的索引，作为起始和长度指示(start and length indicator，SLIV),终端设备可以根据公式SLIV＝14·(L-1)+S来计算，其中，SLIV是网络设备提供的，L是PDCCH的持续长度(相当于上述发送周期)，S是起始位置指示(第一偏移量)。
终端设备根据配置信息确定第一DCI出现的频域位置方式包括以下几种方式：
方式1：通过绝对位置指示——配置信息包括绝对位置信息，网络设备可以指示获取第一DCI的频点信息。
方式2：通过索引方式指示——配置信息包括索引，网络设备可以通过索引方式来指示，索引指示的资源粒度可以是频点、或BWP、或资源块、或子载波，本发明方案对此不做限制。对应地，网络设备可以指示第一DCI对应的频点索引、或者指示第一DCI对应的BWP索引、或者指示第一DCI的资源块索引、或者指示第一DCI的资源块索引+子载波索引。
方式3：通过位图方式指示——配置信息包括位图，网络设备可以通过位图bitmap来指示哪些资源块可以用于第一DCI，每个bit可以对应一组RB(如一组包括6RB)，当bit为置为“1”时，标识此bit对应的一组RB可以用于第一DCI，反之。其中，资源块的起始RB组位置可以由协议指定，或者由网络设备通过专用信令指示。
上述绝对位置指示的方式也适用于其他资源粒度的频域资源指示，这里不做限定。
在上述方法中，网络设备向终端设备发送配置信息，终端设备根据该配置信息监听第一DCI，而无需一直持续的监听第一DCI，造成资源浪费,并且该配置信息不仅仅用于指示第一DCI的时域资源位置，还用于指示第一DCI的频域资源位置，进而充分利用通信资源，提高通信效率。
步骤S502:终端设备接收来自网络设备的配置信息。
进一步，终端设备可以根据配置信息确定所述第一DCI的时域位置或频域位置。
步骤S503：网络设备向终端设备发送第一下行控制信息DCI。
具体地，该第一DCI用于调度计数请求信息，该第一DCI可以是通过无线网络临时标识加扰的。该无线网络临时标识可以是小区无线网络临时标识(cell radio network temporary identifier，C-RNTI)、组无线网络临时标识(group radio network temporary identifier，G-RNTI)、单小区无线网络临时标识(single cell radio network temporary identifier，SC-RNTI)或单小区通知网络临时标识SC-N-RNTI(Single cell notification RNTI)或SI-RNTI(System Information RNTI)等，或者其他用于加扰多播业务的RNTI，具体名字本方案不做限定，为了表述简洁，将开始接收第一多播业务、正在接收第一多播业务、即将接收第一多播业务、希望(预期)接收第一多播业务、或者对第一多播业务的接收感兴趣简称为订阅第一多播业务，将停止接收第一多播业务或者对第一多播业务的接收不感兴趣简称为不订阅第一多播业务。
在一种可能的实施方式中，第一DCI是通过组无线网络临时标识加扰的，由于该第一DCI是通过G-RNTI加扰的，而G-RNTI与多播业务的业务标识是对应的，因而相当于 G-RNTI隐式承载了多播业务的业务标识，因而，当终端设备收到G-RNTI加扰的第一DCI时，可以确定网络设备想要统计具体哪一种多播业务，第一DCI承载的调度信息可以用于发送给订阅相同多播业务的终端设备，进一步，第一DCI用于调度计数请求信息，也就是说所述计数请求信息对应于G-RNTI相应的，由于第一DCI用于调度计数请求信息且第一DCI是通过G-RNTI加扰的，那么终端设备用G-RNTI从PDCCH信道解扰第一DCI，通过第一DCI指示的参数去相关的PDSCH上接收计数请求信息。可选地，该第一DCI也可以调度其他多播相关的数据或信令。
在一种可选的方案中，该第一DCI中包括计数请求信息，进一步可选的，第一DCI中还包括指示信息，所述指示信息用于指示第一DCI中包括计数请求信息，进而终端设备在接收到第一DCI之后可以根据指示信息来确定第一DCI中包括了计数请求信息。具体的，该指示信息可以通过显式或者隐式的方式来指示，在一种可能的实现中，指示信息通过显式的方式指示，具体的，第一DCI包括指示信息，指示信息用于指示该第一DCI包括计数请求信息。在另一种可能的实现中，指示信息通过隐式的方式指示，例如，标准预定义一个特定的域，所述特定的域用于指示该第一DCI是否包括计数请求信息。由于第一DCI上包括计数请求信息，相应的，网络设备不用再通过另外的消息向终端设备发送计数请求信息，提高了通信效率。
在一种可选的方案中，该第一DCI包括第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或计数响应信息的时频资源。
具体地，终端设备接收到第一DCI，通过解扰第一DCI接收该第一指示信息后，在该第一指示信息指示的计数请求信息的时频资源位置处接收计数请求信息，或者，终端设备接收到第一DCI，通过解扰第一DCI获得该第一指示信息，在该第一指示信息指示的资源位置处发送计数响应信息，该第一指示信息可以指示一个或者多个资源位置，网络设备可以为对同一多播业务感兴趣的终端设备分配相同的第一指示信息，即分配相同的一个或者多个资源位置，提高通信系统的资源利用率。
在一种可选的方案中，网络设备向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或计数响应信息的时频资源。
具体地，终端设备接收到该第一指示信息后，在该第一指示信息指示的计数请求信息的时频资源位置处接收计数请求信息，或者，终端设备接收到该第一指示信息，在该第一指示信息指示的资源位置处发送计数响应信息，该第一指示信息可以指示一个或者多个资源位置，网络设备可以为对同一多播业务感兴趣的终端设备分配相同的第一指示信息，即分配相同的一个或者多个资源位置，提高通信系统的资源利用率。
该第一指示信息指示计数请求信息和/或计数响应信息的时频资源的方法同上述步骤S501中的第一DCI出现的时域位置方式和频域位置方式，这里不详细进行阐述。
在上述方法中，通过网络设备配置计数请求信息和/或计数响应信息的时频资源的方式，能够合理的利用时频资源，避免资源浪费。
步骤504：终端设备接收来自网络设备的第一DCI。
具体地，终端设备根据G-RNTI接收来自网络设备的第一DCI，且所述第一DCI用于调度计数请求信息，进一步，终端设备可以确定所述计数请求信息是对应于所述G-RNTI，也就是说，终端设备可以确定所述计数请求信息用于统计的业务。例如，所述第一DCI是通过G-RNTI1加扰的，所述G-RNTI1对应于多播业务，那么终端设备在接收到第一DCI之后，可以确定其调度的计数请求信息是用于统计订阅多播业务的终端设备的数量。通过本申请实施例提供的通信方法，网络设备可以通过发送G-RNTI加扰的DCI来调度计数请求信息，进而实现对订阅多播业务的终端设备的数量统计，同时，节省了额外的信令消耗，提升了通信系统的通信效率。
步骤S505：网络设备向终端设备发送计数请求信息。
其中，计数请求信息用于统计订阅多播业务的终端设备的个数。承载计数请求信息的实现方式可以有多种，具体地：
方式1：通过媒体接入控制控制元素(media access control control element,MAC CE)来承载计数请求信息时。
当通过MAC控制单元承载计数请求信息时，参见图6所示，通过MAC子头中承载特殊取值的逻辑信道标识LCID来指示对应的MAC CE上承载计数请求信息。
例如，当LCID＝11100表示MAC CE上承载计数请求信息，当LCID＝000111表示MAC CE上承载的是其他类型的消息。
方式2：通过控制协议数据单元(control protocol data unit，Control PDU)来承载计数请求信息时。
当通过Control PDU承载计数请求信息时，具体如下：该Control PDU可以为无线链路控制子层协议数据单元(radio link control protocol data unit，RLC PDU)或者分组数据会聚协议子层协议数据单元(packet data convergence protocol control protocol data unit，PDCP PDU)。具体承载计数请求信息的Control PDU的示意图如图7所示，该PDU包括D/C域，用于指示该PDU是控制PDU还是数据PDU，PDU类型用于指示该PDU的类型，本申请中针对PDU类型可以用一个特殊的取值来标识此Control PDU承载计数请求信息。
例如，当PDU类型的值为1111，则表示承载的是计数请求信息，当PDU类型的值为0000，则表示承载的是其他类型的消息。
方式3：通过无线资源控制(radio resource control,RRC)消息来承载计数请求信息时。
当通过RRC消息承载计数请求信息时，该RRC消息可以是一个新引入的RRC消息，如5G多播计数请求消息。当终端设备收到该5G多播计数请求消息时即收到计数请求信息。
在一种可选的方案中，计数请求信息中包括接入概率因子。
具体地，该接入概率因子用于指示发送计数响应信息的概率。可选的，接入概率因子可以为一个或者多个，当该接入概率因子为1个时，处于不同RRC状态的终端设备共用该接入概率因子；当该接入概率因子为多个时，接入概率因子与终端设备的无线资源控制RRC状态相关联，其中，RRC状态包括RRC空闲态、RRC非激活态或RRC连接态，相应的， 终端设备可以根据自己所处的状态来决定使用哪个接入概率因子。
在一种可选的方案中，网络设备向终端设备发送接入概率因子，接入概率因子用于指示发送计数响应信息的概率，相应的，终端设备根据该接入概率因子和计数请求信息确定是否回复计数响应信息。
在一种可选的方案中，网络设备向终端设备发送至少一个接入概率因子，接入概率因子与终端设备的无线资源控制RRC状态相关联，其中，RRC状态包括RRC空闲态、RRC非激活态或RRC连接态，具体地，网络设备为不同状态的终端设备配置不同的接入概率因子，或者网络设备可以让某两个状态的终端设备共用一个概率因子，另一种状态的终端设备单独使用一个概率因子，在一种可能的实现中，网络设备会向终端设备发送至少一个接入概率因子，所述至少一个接入概率因子一一对应于至少一个RRC状态，例如，网络设备向终端设备发送接入概率因子-空闲态(Access probability factor-idle)和接入概率因子-连接态(Access probability factor-connected)，用于指示不同RRC状态的接入概率因子，相应的，处于RRC空闲态的终端设备应用接入概率因子-空闲态来确定是否回复计数响应信息。
步骤S506：终端设备接收来自网络设备的计数请求信息。
终端设备接收网络设备发送的计数请求信息之后，回复计数响应信息；或者终端设备收到计数请求信息之后，要确定是否给网络设备回复计数响应信息。确定的方式包括：
1)终端设备根据计数请求信息中承载的多播业务的业务标识获知网络设备想要统计的订阅的多播业务，如果该终端设备订阅该多播业务，那么该终端设备确定要回复计数响应信息。
2)根据预先获取的接入概率因子以及计数请求信息来确定是否回复计数响应信息。
具体地，该接入概率因子可以承载于上述MAC CE、Control PDU、RRC消息或者可以承载于广播消息中，根据预先获取的接入概率因子确定方式包括：网络设备配置共用的接入概率因子，相应的，处于不同RRC状态(RRC空闲态/RRC非激活态/RRC连接态)的终端设备共用该接入概率因子；如果网络设备配置和RRC状态关联的接入概率因子，终端设备要根据自身的RRC状态来确定使用哪个接入概率因子。
(1)处于不同RRC状态的终端设备共用接入概率因子时。
在一种可选的方案中，终端设备从预设范围内选择随机数；若所述随机数小于或等于所述接入概率因子，向所述网络设备发送所述计数响应信息。
例如，网络设备为处于不同RRC状态(RRC空闲态/RRC非激活态/RRC连接态)的终端设备配置接入概率因子0.3，则处于不同RRC状态的终端设备共用该概率因子0.3，例如，处于RRC空闲态的终端设备从0-1中选择一个随机数0.2，将这个随机数与接入概率因子进行比较，因为0.2<0.3，则处于RRC空闲态终端设备向网络设备发送计数响应信息；处于RRC非激活态的终端设备从0-1中选择一个随机数0.1，将这个随机数与接入概率因子进行比较，因为0.1<0.3，则处于RRC非激活态终端设备向网络设备发送计数响应信息；处于RRC连接态的终端设备从0-1中选择一个随机数0.25，将这个随机数与接入概率因子进行比较，因为0.25<0.3，则处于RRC连接态终端设备向网络设备发送计数响应信息。
(2)处于不同RRC状态的终端设备使用不同的接入概率因子。
具体地，接入概率因子与终端设备的无线资源控制RRC状态相关联，网络设备为不同状态的终端设备配置不同的接入概率因子，或者网络设备可以让某两个状态的终端设备共用一个概率因子，另一种状态的终端设备单独使用一个概率因子。在一种可能的实现中，网络设备会向终端设备发送至少一个接入概率因子，所述至少一个接入概率因子一一对应于至少一个RRC状态，例如，网络设备向终端设备发送接入概率因子-空闲态(Access probability factor-idle)和接入概率因子-连接态(Access probability factor-connected)，用于指示不同RRC状态的接入概率因子，相应的，处于RRC空闲态的终端设备应用接入概率因子-空闲态来确定是否回复计数响应信息。
在一种可选的方案中，终端设备从预设范围内选择随机数；若所述随机数小于或等于所述接入概率因子，向所述网络设备发送所述计数响应信息。
例如，网络设备为处于RRC空闲态的终端设备配置接入概率因子0.35，处于RRC非激活态的终端设备配置接入概率因子0.4，处于RRC连接态的终端设备配置接入概率因子0.45，则终端设备从0-1范围选择一个随机数0.1，由于该终端设备为RRC连接态，则接入概率因子为0.5，由于0.1<0.5，则终端设备向网络设备发送计数响应信息。
例如，网络设备为处于RRC空闲态和RRC非激活态的终端设备配置接入概率因子0.35，处于RRC连接态的终端设备配置接入概率因子0.4，则终端设备从0-1范围选择一个随机数0.2，由于该终端设备为RRC空闲态，则接入概率因子为0.2，由于0.1<0.5，则终端设备向网络设备发送计数响应信息。
上述描述了选择的随机数小于或等于接入概率因子，则终端设备确定向网络设备发送计数响应信息情况，下面将当选择的随机数大于接入概率因子的情况，该选择的随机数大于接入概率因子的情况适用于上述处于不同RRC状态的终端设备共用接入概率因子时，以及处于不同RRC状态的终端设备使用不同的接入概率因子。具体如果选择的随机数大于接入概率因子，分为三种情况：
第一种情况：终端设备确定不向网络设备发送计数响应信息。
第二种情况：终端设备重新在0-1中选择一个随机数，将该随机数和接入概率因子进行比较，重复上述过程直到发送计数响应信息或者达到最大重复次数限制。
例如，假若接入概率因子为0.3，最大重复次数为10，假若终端设备重新在0-1中选择的一个随机数为0.5，因为该随机数0.5大于0.3，则终端设备重新在0-1中选择一个随机数与0.3进行比较，直到发送计数响应信息或者比较的次数达到10。
第三种情况：终端设备等待一段时间后再重新在0-1中选择一个随机数，将该随机数和接入概率因子进行比较，重复上述过程直到发送计数响应信息或者达到最大重复次数限制。该等待一段时间可以是固定时间值或者是从0-T中随机选择一个时间值，其中，所述固定时间值或者用于确定等待时间的T可以是网络配置的，具体地，可以是网络通过系统消息或者RRC消息配置的。
在上述方法中，终端设备通过接入概率因子确定是否回复计数响应信息的方式，能够缓解信道资源的使用以及减少网络设备的负荷，提升了通信系统的通信效率。
步骤S507：终端设备向网络设备发送计数响应信息。
步骤S508：网络设备接收来自终端设备的计数响应信息。
具体地，该计数响应信息用于响应计数请求信息，该计数响应信息包括：多播业务的指示信息，指示信息用于指示订阅多播业务。或者，该计数响应信息包括：多播业务的业务标识、多播业务对应的波束指示、多播业务对应的带宽部分BWP指示和终端设备的位置指示信息中至少一项。
具体地，若终端设备处于RRC空闲态或RRC非激活态，计数响应信息承载于随机接入消息中，随机接入消息为Msg1、Msg3、Msg5或MsgA。若终端设备处于RRC连接态，计数响应信息承载于MAC CE、Control PDU或者RRC消息中。
当终端设备确定向网络设备发送计数响应信息后，终端设备可以根据自己所处的RRC状态决定如何发送计数响应信息。
第一种情况：当终端设备处于RRC空闲态时，需要发起RRC连接过程来向网络设备发送计数响应信息，计数响应信息承载于随机接入消息中，包括如下三种可选方案：
方案1：当计数响应信息承载于Msg1或MsgA时，终端设备可以通过向网络设备发送Msg1(Msg1，即前导码preamble)或消息A(MsgA)，用于告知网络设备该终端设备订阅多播业务。其中，前导码preamble与多播业务标识有一一对应关系，网络设备可根据收到的前导码preamble知道终端设备具体订阅哪一项多播业务。
例如，终端设备向网络设备发送dedicated preamble，网络设备根据前导码preamble与多播业务标识对应关系知道终端设备订阅多播业务1，或者终端设备向网络设备发送preamble，表示终端设备订阅多播业务。
方案2：当计数响应信息承载于Msg3时，终端设备可以通过消息3(RRC建立请求消息或者RRC连接重建消息或RRC连接建立消息或RRC重建消息)中承载特殊的原因值来指示该终端设备订阅多播业务。
例如，原因值为MBMS，表示终端设备订阅多播业务；原因值为多播业务标识1，表示终端设备订阅多播业务1。
例如，原因值为dedicated preamble，表示终端设备订阅多播业务；或者使用多个dedicated preamble来分别对应终端设备具体订阅哪一种多播业务。
方案3：当计数响应信息承载于Msg5时，终端设备可以通过消息5(RRC建立完成消息或者RRC重建完成消息或RRC连接建立完成消息或RRC重建完成消息)中承载多播业务标识指示终端设备订阅多播业务。
例如，多播业务标识为多播业务2，则表示终端设备订阅多播业务2。
第二种情况：当终端设备处于RRC非激活态时，需要发起RRC恢复过程来向网络设备发送计数响应信息。计数响应信息承载于随机接入消息中，包括如下三种可选方案：
方案1：当计数响应信息承载于Msg1或MsgA时，终端设备可以通过向网络设备发送Msg1(Msg1，即前导码preamble)或消息A(MsgA)，用于告知网络设备该终端设备订阅多播业务。其中，前导码preamble与多播业务标识有一一对应关系，网络设备可根据收到的前导码preamble知道终端设备具体订阅哪一项多播业务。
例如，终端设备向网络设备发送dedicated preamble，网络设备根据前导码preamble与 多播业务标识对应关系知道终端设备订阅多播业务1，或者终端设备向网络设备发送preamble，表示终端设备订阅多播业务。
方案2：当计数响应信息承载于Msg3时，终端设备可以通过消息3(RRC连接恢复请求消息或RRC恢复请求消息)中承载原因值来指示该终端设备订阅多播业务。
例如，原因值为MBMS，表示终端设备订阅多播业务；原因值为多播业务标识1，表示终端设备订阅多播业务1。
例如，原因值为dedicated preamble，表示终端设备订阅多播业务；或者使用多个dedicated preamble来分别对应终端设备订阅哪一种多播业务。
方案3：当计数响应信息承载于Msg5时，终端设备可以通过消息5(RRC恢复完成消息或者RRC连接恢复完成消息)中承载多播业务标识指示终端设备订阅多播业务。
例如，多播业务标识为多播业务2，则表示终端设备订阅多播业务2。
第三种情况：当终端设备处于RRC连接态，需要通过MAC CE、control PDU或RRC消息来发送计数响应信息，计数响应信息承载于MAC CE、control PDU或RRC消息中。可选的，第一种情况和第二种情况中的方法同样适用于RRC连接态的终端设备。
方案1：终端设备可以通过RRC建立请求消息或RRC恢复请求消息中承载原因值来指示终端设备订阅第一多播业务。方案2：终端设备可以通过前导码preamble指示终端设备订阅多播业务。其中，前导码preamble与多播业务标识有一一对应关系，网络设备可根据收到的前导码preamble知道终端设备具体订阅哪一项多播业务。
方案3：终端设备可以通过计数响应信息中承载多播业务标识信息指示终端具体订阅哪一种多播业务。
在一种可选的方案中，所述方法还包括步骤S509：终端设备确定停止上报订阅状态。
具体的，在满足第一条件时，终端设备确定终止统计过程，第一条件包括：在预设时间段内未监听到第一DCI；或连续监听到第一DCI的个数达到第一阈值；或接收来自网络设备的第二指示信息，第二指示信息用于指示终端设备终止统计过程。其中，所述第一阈值是由网络设备配置的。
具体地，该终止统计过程也可以称为退出统计过程、或者停止统计过程，该预设时间段可以是网络设备配置的，或者是协议预定义的。
具体地，该预设时间段的配置单位可以为第一DCI的发送周期的整数倍，可以理解，当终端设备在连续的N个第一DCI的发送周期未监听到第一DCI，则终端设备终止统计过程。
在上述方法中，通过满足第一条件终止统计过程的方式，能够避免回复计数响应信息后，终端还在监听第一DCI，造成资源浪费。
在图5所描述的方法中，通过在PDCCH信道向终端设备发送第一DCI，该第一DCI用于调度计数请求信息，终端设备通过解扰第一DCI，根据第一DCI指示的参数获得计数请求信息，终端设备接收到该计数请求信息后回复计数响应信息，网络设备能根据该计数响应信息统计订阅多播业务的RRC空闲态/RRC非激活态/RRC连接态的终端设备的个数，进而优化后续的多播业务传输控制。
请参见图8，图8是本申请实施例提供的又一种通信方法，该方法包括但不限于如下步骤：
步骤S801:网络设备向终端设备发送第三下行控制信息DCI。
其中，所述第三DCI用于指示至少一个计数请求信息。
具体地，第一种方式，该第三DCI是通过预设无线网络标识加扰的，或者是通过特殊的RNTI加扰的，该第三DCI用于调度多个多播业务的计数请求信息，相应地，通过该特殊的RNTI加扰的第三DCI可以一次调度多个多播业务组的计数请求信息。所述特殊的RNTI可以理解为除G-RNTI以外的RNTI，例如由标准定义的专用于加扰第三DCI的参数，通过使用特殊的RNTI加扰第三DCI，可以指示终端设备：所述第三DCI是用于指示计数请求信息的。当该第三DCI是通过特殊的RNTI加扰的方式如下：
方式1：该第三DCI是通过特殊的RNTI加扰的，相应地，终端设备通过特殊的RNTI解扰第三DCI，通过第三DCI指示的参数去相关的物理下行共享信道(physical downlink shared channel，PDSCH)上获得计数请求信息。
方式2：该第三DCI是通过特殊的RNTI加扰的，该第三DCI包括第三指示信息，该第三指示信息用于指示该第三DCI包括计数请求信息，进而终端设备在接收到第三DCI之后可以根据该第三指示信息确定第三DCI包括了计数请求信息。具体地，该第三指示信息可以通过显式或者隐式的方式来指示，在一种可能的实现中，第三指示信息通过显式的方式来指示，第三DCI包括第三指示信息，该第三指示信息用于指示第三DCI包括计数请求信息。在另一种可能的实现中，第三指示信息通过隐式的方式指示，例如，标准预定义一个特定的域，所述特定的域用于指示该第三DCI是否包括计数请求信息。由于第三DCI上包括计数请求信息，相应的，网络设备不用再通过另外的消息向终端设备发送计数请求信息，终端设备通过特殊的RNTI解扰第三DCI，接收计数请求信息。
在一种可选的方案中，网络设备为终端设备配置第一发送周期，相应的，终端设备根据该第一发送周期可以用特殊的RNTI周期性的监听第三DCI。通过这样的方式，终端设备可以不用持续一直监听第三DCI，达到省电的效果，同时避免资源浪费。
具体地，第二种方式，该第三DCI可以是通过寻呼无线网络临时标识(paging radio network tempory identity，P-RNTI)加扰的，该第三DCI是用于调度寻呼信息，通过寻呼消息承载计数请求信息的具体方式如下：
方式1：该第三DCI是通过不同于正常的P-RNTI的特殊的P-RNTI加扰的，该不同于正常的P-RNTI的特殊的P-RNTI和正常的RNTI可以理解为在现有的P-RNTI上进行改进，例如，通过使用特殊的P-RNTI加扰第三DCI，该第三DCI调度的寻呼消息，寻呼消息不仅可以用于指示终端设备系统信息变更，公共预警信息到达，或有终端的业务到达，还可以指示有计数请求信息到达。该第三DCI用于调度寻呼消息，寻呼消息中承载计数请求信息，相应地，终端设备通过特殊的RNTI解扰第三DCI，通过第三DCI指示的参数检测相关的物理下行共享信道(physical downlink shared channel，PDSCH)接收寻呼消息，从而接收计数请求信息。
方式2：网络设备可以通过不同于正常的寻呼机会(paging occasion，PO)配置的特殊PO配置来发送第三DCI,相应地，终端设备在该特殊PO配置处监听第三DCI。
方式3：该第三DCI是通过正常的P-RNTI加扰的，该第三DCI包括第四指示信息，该第四指示信息用于指示该第三DCI包括计数请求信息，进而终端设备在接收到第三DCI之后可以根据该第四指示信息确定第三DCI包括了计数请求信息。具体地，该第四指示信息可以通过显式或者隐式的方式来指示，在一种可能的实现中，第四指示信息通过显式的方式来指示，第三DCI包括第四指示信息，该第四指示信息用于指示第三DCI包括计数请求信息。在另一种可能的实现中，第四指示信息通过隐式的方式指示，例如，标准预定义一个特定的域，所述特定的域用于指示该第三DCI是否包括计数请求信息。由于第三DCI上包括计数请求信息，相应的，网络设备不用再通过另外的消息向终端设备发送计数请求信息，相应地，终端设备通过正常的P-RNTI解扰第三DCI，接收计数请求信息。
方式4：该第三DCI是通过正常的P-RNTI加扰的，该第三DCI用于调度寻呼消息，寻呼消息中承载计数请求信息，相应地，终端设备通过正常的P-RNTI解扰第三DCI，通过第三DCI指示的参数检测相关的物理下行共享信道(physical downlink shared channel，PDSCH)上接收寻呼消息，从而接收计数请求信息。
相应地，网络设备在上述4种方式中任选一种方式向终端设备发送第三DCI。
在一种可选的方案中，网络设备向终端设备发送第三DCI之前，网络设备向所述终端设备发送配置信息，该配置信息用于配置接收第三DCI的参数，或者，所述配置信息用于指示第三DCI的时频位置，可以理解，该配置信息用于配置接收该第三DCI的参数。其中，网络设备向终端设备发送配置信息的方式，以及终端设备根据配置信息确定第三DCI出现的时域位置和频域位置的方式可以参考上述实施例中的步骤S501。
步骤S802:终端设备接收来自网络设备的第三下行控制信息DCI。
具体地，终端设备根据特殊的RNTI接收来自网络设备的第三DCI，该第三DCI用于调度多个多播业务的计数请求信息，或者根据P-RNTI接收来自网络设备的第三DCI，且该第三DCI用于调度寻呼消息，寻呼消息上承载计数请求信息。相应的，终端设备在收到第三DCI之后确定计数请求信息是用于统计订阅多播业务的终端设备的数量。通过本申请实施例提供的通信方法，网络设备可以通过发送特殊RNTI来调度多个多播业务的计数请求信息或P-RNTI加扰的DCI调度寻呼消息，进而实现对订阅多播业务的终端设备的数量统计，同时，节省了额外的信令消耗，提升了通信系统的通信效率。
步骤S803:网络设备向终端设备发送计数请求信息。
其中，计数请求信息用于统计订阅多播业务的终端设备的个数。承载计数请求信息的实现方式可以参考上述实施例中的步骤S505，本步骤不再赘述。
在一种可选的方案中，计数请求信息包括多播业务的业务标识。
具体地该计数请求信息包括多播业务的业务标识，能够明确网络设备想要统计订阅具体某一项或者多项的多播业务。
例如，计数请求信息包括多播业务1，则表示网络设备想要统计订阅多播业务1终端设备的个数；或者，计数请求信息包括多播业务1，多播业务2，多播业务3，则表示网络 设备想要统计订阅多播业务1的终端设备的个数，订阅多播业务2的终端设备的个数以及订阅多播业务3的终端设备的个数，即网络设备可以通过一条计数请求信息统计订阅多种多播业务的终端设备的个数，提升通信系统的资源利用率。
在一种可选的方案中，计数请求信息中包括接入概率因子。
具体地，该接入概率因子用于指示发送计数响应信息的概率。可选的，接入概率因子可以为一个或者多个，当该接入概率因子为1个时，处于不同RRC状态的终端设备共用该接入概率因子；当该接入概率因子为多个时，接入概率因子与终端设备的无线资源控制RRC状态相关联，其中，RRC状态包括RRC空闲态、RRC非激活态或RRC连接态，相应的，终端设备可以根据自己所处的状态来决定使用哪个接入概率因子。
在一种可选的方案中，网络设备向终端设备发送接入概率因子，接入概率因子用于指示发送计数响应信息的概率，相应的，终端设备根据该接入概率因子和计数请求信息确定是否回复计数响应信息。
在一种可选的方案中，网络设备向终端设备发送至少一个接入概率因子，接入概率因子与终端设备的无线资源控制RRC状态相关联，其中，RRC状态包括RRC空闲态、RRC非激活态或RRC连接态，举例来说，网络设备为不同状态的终端设备配置不同的接入概率因子，或者网络设备可以让某两个状态的终端设备共用一个概率因子，另一种状态的终端设备单独使用一个概率因子，例如，网络设备为RRC空闲态的终端设备配置接入概率因子为0.1，RRC非激活态的终端设备配置接入概率因子为0.2，RRC连接态的终端设备配置接入概率因子为0.3，网络设备向终端设备发送概率因子0.1,0.2和0.3。例如，网络设备为RRC空闲态和RRC非激活态的终端设备配置接入概率因子0.15，以及为RRC连接态的终端设备配置接入概率因子0.25，网络设备向终端设备发送接入概率因子0.15和0.25。
步骤S804：终端设备接收来自网络设备的计数请求信息。
具体实施方式可以参考上述实施例中的步骤S506，本步骤不再赘述。
步骤S805:终端设备向网络设备发送计数响应信息。
步骤S806:网络设备接收来自终端设备的计数响应信息。
具体地，该计数响应信息用于响应该计数请求信息。具体地实现方式可以参考上述实施例中的步骤S508，本步骤不再赘述。
在图8所描述的方法中，通过在PDCCH信道向终端设备发送第三DCI，该第三DCI用于调度计数请求信息，终端设备通过解扰第三DCI，根据第三DCI指示的参数获得计数请求信息，终端设备接收到该计数请求信息后回复计数响应信息，网络设备能根据该计数响应信息统计正在接收或感兴趣接收多播业务的RRC空闲态/RRC非激活态/RRC连接态的终端设备的个数，进而优化多播业务传输控制，提高通信效率。
请参见图9，图9是本申请实施例提供的又一种通信方法，该方法包括但不限于如下步骤：
步骤S901：网络设备向终端设备发送MCCH配置信息。
具体地，该步骤S901是可选的步骤。该MCCH配置信息用于配置计数请求信息的时频资源位置。可选地，MCCH配置信息可承载在广播消息中。可选地，MCCH配置信息可包括：BWP信息、时频控制资源位置指示、搜索空间search space、重复周期和修改周期，其中，该BWP信息用于指示MCCH在哪个BWP上发送，该时频控制资源位置指示也可以称为CORESET指示，用于指示承载MCCH的频域位置和时域上占用的符号个数，该重复周期用于指示MCCH多久出现一次，一个修改周期内包括多个重复周期，在一个修改周期内MCCH承载的信息是不变的。
具体地，在3G的counting机制中，网络设备通过MCCH信道向至少一个终端设备发送多播修改服务信息消息，该多播修改服务信息消息包括配置信息(用于周期发送该多播修改服务信息消息)和指示信息，该指示信息用于指示终端设备触发多播计数的过程，终端设备接收到多播修改服务信息消息中的指示信息后，触发多播计数过程。在LTE的counting机制中，网络设备向终端设备发送配置信息，该配置信息用于配置发送计数请求信息的时域资源位置，终端设备根据该配置信息，接收通过MCCH信道承载的计数请求信息。而本实施例中的MCCH配置信息区别于3G和LTE方案中的配置信息，本实施例中的MCCH配置信息新引入一些属性，该MCCH配置信息包括BWP信息、时频控制资源位置指示、搜索空间search space、重复周期、修改周期。该MCCH配置信息不仅可以用于配置发送计数请求信息的时域资源位置，还可以用于配置发送计数请求信息的频域资源位置。
步骤S902：终端设备接收来自网络设备的MCCH配置信息。
具体地，该MCCH配置信息用于配置计数请求信息的时频资源位置，相应地，终端设备通过该MCCH配置信息在计数请求信息的时频资源位置处获取计数请求信息。
步骤S903：网络设备通过MCCH信道承载向终端设备发送的计数请求信息。
具体地，MCCH信道可以承载计数请求信息和/或计数响应信息，MCCH信道还可以承载其他多播业务调度的相关信息，如多播业务信道(multicast traffic channel，MTCH)的配置集合，该多播业务信道的配置集合包括多个多播业务信道配置；其中每个多播业务信道配置包括：G-RNTI、DRX参数，承载MTCH的BWP信息、时频控制资源位置指示和搜索空间指示。该计数请求信息用于统计订阅多播业务的终端设备的个数。MCCH信道承载计数请求信息的实现方式可以有多种，具体参考步骤S505，这里不再赘述。。
在一种可选的方案中，该计数请求信息包括该多播业务的业务标识。
具体地，该计数请求信息包括该多播业务的业务标识，能够明确网络设备想要统计订阅具体某一项或者多项的多播业务的终端设备的个数。
例如，计数请求信息包括多播业务1，则表示网络设备想要统计订阅多播业务1终端设备的个数；或者，计数请求信息包括多播业务1，多播业务2，多播业务3，则表示网络设备想要统计订阅多播业务1的终端设备的个数，订阅多播业务2的终端设备的个数，订阅多播业务3的终端设备的个数，即网络设备可以通过一条计数请求信息统计对多种多播业务感兴趣的终端设备的个数。
在一种可选的方案中，计数请求信息中包括接入概率因子。
具体地，该接入概率因子相关解释和含义参考步骤S505，这里不再赘述。
在一种可选的方案中，网络设备向终端设备发送接入概率因子，接入概率因子用于指示发送计数响应信息的概率，相应的，终端设备根据该接入概率因子和计数请求信息确定是否回复计数响应信息。
在一种可选的方案中，网络设备向终端设备发送至少一个接入概率因子，接入概率因子与终端设备的无线资源控制RRC状态相关联，其中，RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。具体参考步骤S505，这里不再赘述。。
步骤S904：终端设备接收来自网络设备的计数请求信息。
终端设备接收网络设备发送的计数请求信息之后，回复计数响应信息；或者终端设备收到计数请求信息之后，要确定是否给网络设备回复计数响应信息。确定的方式可以参考步骤S506，这里不再赘述。
步骤S905：终端设备向网络设备发送计数响应信息。
步骤S906：网络设备接收来自终端设备的计数响应信息。
具体地，该计数响应信息用于响应计数请求信息。该计数响应信息包括：多播业务的指示信息，指示信息用于指示订阅多播业务。或者，该计数响应信息包括：多播业务的业务标识、多播业务对应的波束指示、多播业务对应的带宽部分BWP指示和终端设备的位置指示信息中至少一项。
具体地，若终端设备处于RRC空闲态或RRC非激活态，计数响应信息承载于随机接入消息中，随机接入消息为Msg1、Msg3、Msg5或MsgA。若终端设备处于RRC连接态，计数响应信息承载于MAC CE、Control PDU或者RRC消息中。
当终端设备确定向网络设备发送计数响应信息后，终端设备可以根据自己所处的RRC状态决定如何发送计数响应信息，具体可以参考步骤S508，这里不再赘述。
在图9所描述的方法中，通过发送MCCH配置信息，该MCCH配置信息指示时频资源位置，在MCCH信道向终端设备发送计数请求信息，相应地，终端设备接收到该计数请求信息后回复计数响应信息，网络设备能根据该计数响应信息统计正在接收或感兴趣接收多播业务的RRC空闲态/RRC非激活态/RRC连接态的终端设备的个数，进而优化多播业务传输控制，由于现有的3G或者LTE中的MCCH机制无法应用到5G当中，通过上述实现方式能够解决MCCH适应5G新特性如BWP和波束的问题，从而提高通信效率。
对于终端设备来说(子载波间隔Δf为＝1.25/2.5/7.5/15kHz)，终端设备根据网络设备发送的MBSFN-SubframeConfig确定网络设备预留时域上的哪些子帧对应于下行MBSFN业务；但如果终端设备还配置了子载波间隔为Δf＝0.37kHz，即对应的最小时间单位(如，slot＝3ms时)，确定哪些slot能承载MCCH是不确定。因此，为了解决上述问题，本方法提供了如下解决方案，该方案适用于上述所有实施例，但不限制于上述实施例的应用场景。这里对于能承载MCCH的slot确定方法主要包括如下两个步骤：确定有效的最小时间单元；在确定有效的最小时间单元(slot)的方法基础上，确定承载MCCH的slot的方法。
具体地，接入网设备为终端设备配置了某种特定数值的子载波间隔，确定该子载波间隔对应的最小时间单元对于MBSFN是否是有效的。确定有效最小时间单元的方法包括：只有MBSFN子帧和特定数值的子载波间隔对应的最小时间单元在时域上是完全匹配的，或者某特定数值的子载波间隔对应的最小时间单元内对应的u个子帧都是网络设备用于下行MBSFN的，在这样的时隙，终端设备才会去接收网络设备发送的MBMS，举例来说，当Δf＝0.37kHz，最小时间单元对应的子帧数量u为3。举例来说，只有MBSFN子帧和Δf＝0.37kHz对应的时隙在时域上是完全匹配(即时域是重叠的，才认为网络设备是可以使用对应的时隙发送MBSFN的。对于Δf＝0.37kHz的终端设备，当某个时隙对应的各个子帧都是网络设备配置用于下行MBSFN的，在这样的时隙，终端设备才会去接收网络设备发送的MBMS。
示例性地，如图10所示，网络设备配置了子帧#1、子帧#2,子帧#3,子帧#6,子帧#7,和子帧#8作为预留给MBSFN使用，而对于配置了Δf＝0.37kHz的终端设备(即最后一行对应的帧结构)，首部分(黑色填充部分)是用于发送主系统消息的位置，是不能改变的，因而，对于Δf＝0.37kHz的终端设备，slot#0对应的子帧#1,#2,#3是网络设备预留给下行MBSFN使用，因而，slot#0是满足条件的，终端设备才会在slot#0去接收基站发送的MBMS。而对于slot#1，因为只有对应的子帧#6是MBSFN子帧，而子帧#4，子帧#5都是non-MBSFN子帧，因而，终端设备在slot#1是不会取接收网络设备发送的MBMS的。同理，对于slot#2，slot#2对应的子帧#7,8是MBSFN子帧，但子帧9是non-MBSFN子帧，因而，对于Δf＝0.37kHz的终端设备，slot#2也不是网络设备预留用于下行MBSFN使用的。
终端设备按照上述方法确定接收MBMS位置的方法，使得配置了Δf＝0.37kHz的终端设备可以准确判断下行MBSFN对应的时域资源。在如上确定有效的最小时间单元(slot)的方法基础上，介绍确定承载MCCH的slot的方法。在介绍确定承载MCCH的slot的方法之前，先介绍确定承载MCCH的子帧的方法，具体如下：
先根据公式SFN mod mcch-RepetitionPeriod＝mcch-Offset确定MCCH被调度的无线帧，其中，MCCH重复周期mcch-RepetitionPeriod和MCCH偏移量mcch-Offset是网络设备配置的，对于终端设备已知的；
然后根据sf-AllocInfo来指示承载MCCH的子帧在上述无线帧中的位置——10bit bitmap来指示可以。
由于，Slot#6对应的所有子帧都配置成MBSFN subframe，因此，根据如上确定有效的最小时间单元(slot)的方法可知，slot#6是有效的，即slot是可用的。但根据确定承载MCCH的子帧方法可知，sf-AllocInfo-r16是按10bit来指示某个满足上述公式的无线帧中可以承载MCCH的子帧，slot#6包括subframe#19、subframe#20和subframe#21，其中，subframe#19根据无线帧#N+1对应的sf-AllocInfo-r16来确定是否可以承载MCCH，subframe#20和subframe#21根据无线帧#N+2对应的sf-AllocInfo-r16来确定是否可以承载MCCH，因此，如果subframe#19对应bit置为1，对于终端设备来说是不能确定slot#6是否承载MCCH的。因此，对于配置了特殊子载波间隔的终端设备，需要定义一种确定可以承载MCCH的slot的方法，即一种可以确定哪些slot可以承载MCCH的方法。其中，特殊子载波间隔可以是0.37kHz、0.37kHz/2，本方案对此不做限制。
对于有效的slot能够承载MCCH的确定方法，包括如下几种方案：
方案1：终端设备自己决定，在当前标准确定有效的slot基础上，根据如下option，明确有效的slot能否承载MCCH：
Option 1：对于一个有效的slot，如果有效的slot对应的任一subframe可以承载MCCH，则认为此有效的slot可以承载MCCH。
Option 2：对于一个有效的slot，如果有效的slot中位于相同无线中的所有子帧都可以承载MCCH，则认为此有效的slot可以承载MCCH。
方案2：网络设备实现，网络设备通过配置避免出现跨无线帧的slot(无标准影响)。
方案3：网络设备通过发送指示信息告知终端设备承载MCCH的slot，此方案下，网络设备可以通过显示指示信息来指示终端设备承载MCCH的slot，而无需终端设备自己判断。
具体地，网络设备可以根据如下任一option来指示终端设备承载MCCH的slot信息，即基站可以通过如下任一option来指示终端设备哪些slot能否承载MCCH，对应地，终端设备可以根据网络设备发送的指示信息来确定承载MCCH的slot信息：
Option1：通过bitmap方式指示哪些slot是可以承载MCCH的。
具体地，bitmap中的每个bit对应一个slot，bit与slot的对应关系是预先规定的，网络设备和终端设备对此对应关系的理解是一致的，当某个bit位置为“1”时，表示该bit对应的slot可以承载MCCH，反之，当该bit位置为“0”时，表示该bit对应的slot不可以承载MCCH。
举个例子，在一个时间周期内，0.37khz对应的时隙个数为13个，可以使用13bit来分别指示13个slot哪些是可以承载MCCH的，当bit位置为“1”时，标识bit位对应的slot可以承载MCCH，反之。
可选地，此bitmap可以用sf-AllocInfo字段标识，但由于现有协议中，此字段原来是10bit，因而，当借用此字段来指示哪些slot是可以承载MCCH时，在字段域的解释中需要做修改：当配置了0.37khz时，此sf-AllocInfo-r16字段通过13bit分别指示哪些slot是可以承载MCCH的，反之，此sf-AllocInfo-r16字段通过13bit的前10bit来指示某个无线帧中哪些无线子帧是可以承载MCCH的，其中，某个无线帧满足由公式SFN mod mcch-RepetitionPeriod＝mcch-Offset确定的可用于调度MCCH的无线帧。换句话说，如果网络设备通过13bit的sf-AllocInfo字段来指示可以承载MCCH，对于配置了0.37kHz的终端设备来说，此13bit的sf-AllocInfo字段是用来指示可以承载MCCH的slot；反之，如果终端设备没有配置0.37kHz，则此13bit的sf-AllocInfo-r16字段的前10bit来指示某个无线帧中哪些无线子帧是可以承载MCCH的，其中，某个无线帧满足由公式SFN mod mcch-RepetitionPeriod＝mcch-Offset确定的可用于调度MCCH的无线帧，上述13bit的后3个bit没有意义，或者说终端设备可以忽略此13bit的后3个bit。
Option2：指示可以承载MCCH的slot number。其中，承载MCCH的slot number的信息可以通过系统消息、或RRC消息来携带。
例如：可以承载MCCH的slot可以是slot#6、slot#8，这样网络设备给终端设备指示slot#6和slot#8。
Option3：通过1bit或1个字段指示终端设备跨无线帧的slot有效。
具体地，该1bit或1个字段可以在SIB13中添加，或者在MBSFN-AreaInfo字段中添加。当终端设备收到这个指示终端设备跨无线帧的slot有效的信息时，默认跨无线帧的有效的slot是有效的。(因为只有跨无线帧的slot判断是有问题的，故可以只通过1bit或1个字段来指示)。
在上述方法中，由于目前MBSFN多播模式是以子帧(1ms)为单位进行配置的(即通过信令指示哪些子帧是可以用于MBMS的)，但如果引入子载波间隔Δf为0.37kHz对应的帧结构，此时终端设备能够识别的最小单位是1slot＝3ms，使得配置了Δf为0.37kHz的终端设备在判断时域哪个位置上的资源可以用于MBMS存在不确定性，通过上述方法能够准确的确定时域哪个位置上的资源可以用于MBMS，避免终端设备判断用于承载MCCH的时域资源位置的不确定性，减少了时间消耗，提高通信效率。
上述详细阐述了本申请实施例的方法，下面提供了本申请实施例的装置。
请参见图11，图11是本申请实施例提供的一种通信装置的结构示意图，该装置可以为上述网络设备，或者网络设备中的器件。该装置1100可以包括处理单元1101，通信单元1102，其中，各个单元的详细描述如下。
处理单元1101，用于通过通信单元1102向终端设备发送第一下行控制信息DCI，该第一DCI用于调度计数请求信息，该第一DCI是通过无线网络临时标识加扰的；
该处理单元1101，还用于通过该通信单元1102向该终端设备发送该计数请求信息，该计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
该处理单元1101，还用于通过该通信单元1102接收来自该终端设备的计数响应信息，该计数响应信息用于响应该计数请求信息。
在一种可选的方案中，该无线网络临时标识为组无线网络临时标识或预设无线网络标识。
在一种可选的方案中，该计数请求信息包括该多播业务的业务标识。
在一种可选的方案中，该处理单元1101，还用于通过该通信单元1102向该终端设备发送接入概率因子，该接入概率因子用于指示发送该计数响应信息的概率。
在一种可选的方案中，该处理单元1101，还用于通过该通信单元1102向该终端设备发送至少一个该接入概率因子，该接入概率因子与该终端设备的无线资源控制RRC状态相关联，其中，该RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在一种可选的方案中，该处理单元1101，还用于通过该通信单元1102向该终端设备发送第一指示信息，该第一指示信息用于指示该计数响应信息的时频资源。
在一种可选的方案中，该计数响应信息包括：该多播业务的指示信息，该指示信息用于指示正在接收或感兴趣接收该多播业务。
在一种可选的方案中，该计数响应信息包括：该多播业务的业务标识、该多播业务对应的波束指示、该多播业务对应的带宽部分BWP指示和该终端设备的位置指示信息中至少一项。
在一种可选的方案中，该计数响应信息承载于随机接入消息中，该随机接入消息为 Msg1、Msg3、Msg5或MsgA。
在一种可选的方案中，该计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在一种可选的方案中，该处理单元1101，还用于通过该通信单元1102向该终端设备发送配置信息，该配置信息用于配置接收该第一DCI的参数。
在一种可选的方案中，该配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，其中，该发送周期为该第一DCI的发送间隔，该第一偏移量为计算该第一DCI的发送起始位置的参数，该时频控制资源位置指示用于指示该第一DCI的时频资源位置，该搜索空间指示用于指示该第一DCI的搜索范围和/或搜索方式，该占用时长为该时频控制资源位置指示的连续持续时间。
在一种可选的方案中，该处理单元1101，还用于通过该通信单元1102向该终端设备发送第二DCI，该第二DCI用于调度该第一消息，其中，该第二DCI是通过该无线网络临时标识加扰的，该处理单元1101，还用于通过该通信单元1102向该终端设备发送第一消息，该第一消息包括该配置信息，其中，该第一消息为系统消息或者多播消息或者RRC消息。
在一种可选的方案中，该处理单元1101，还用于通过该通信单元1102向该终端设备发送第二指示信息，该第二指示信息用于指示该终端设备终止统计过程。
需要说明的是，各个单元的实现及有益效果还可以对应参照图5所示的方法实施例的相应描述。
请参见图12，图12是本申请实施例提供的一种通信装置的结构示意图，该装置可以为上述终端设备，或者终端设备中的器件。该装置1200可以包括处理单元1201，通信单元1202，其中，各个单元的详细描述如下。
处理单元1201，用于通过通信单元1202接收来自网络设备的第一下行控制信息DCI，该第一DCI用于调度计数请求信息，该第一DCI是通过无线网络临时标识加扰的；
该处理单元1201，用于通过该通信单元1202接收来自该网络设备的该计数请求信息，该计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
该处理单元1201，用于通过该通信单元1202向该网络设备发送该计数响应信息，该计数响应信息用于响应该计数请求信息。
在一种可选的方案中，该无线网络临时标识为组无线网络临时标识或预设无线网络临时标识。在一种可选的方案中，该计数请求信息包括该多播业务的业务标识。
在一种可选的方案中，该处理单元1201，还用于通过该通信单元1202接收来自该网络设备的接入概率因子，该接入概率因子用于指示发送该计数响应信息的概率。
在一种可选的方案中，该处理单元1201，还用于通过该通信单元1202接收来自该网络设备的至少一个该接入概率因子，该接入概率因子与该终端设备的无线资源控制RRC状态相关联，其中，该RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在一种可选的方案中，该处理单元1201，还用于从预设范围内选择随机数；该处理单元，还用于当该随机数小于或等于该接入概率因子时，通过该通信单元1202向该网络设备发送该计数响应信息。
在一种可选的方案中，该处理单元1201，还用于通过该通信单元1202接收该网络设备发送的第一指示信息，该第一指示信息用于指示该计数响应信息的时频资源。
在一种可选的方案中，该处理单元1201，还用于通过该通信单元1202接收该网络设备发送的第一指示信息，该第一指示信息用于指示该计数响应信息的时频资源。
在一种可选的方案中，该计数响应信息包括：该多播业务的指示信息，该指示信息用于指示正在接收或感兴趣接收该多播业务。
在一种可选的方案中，该计数响应信息包括：该多播业务的业务标识、该多播业务对应的波束指示、该多播业务的对应的部分带宽BWP指示和该终端设备所处的位置指示信息中至少一项。
在一种可选的方案中，若该终端设备处于RRC空闲态或RRC非激活态，该计数响应信息承载于随机接入消息中，该随机接入消息为Msg1、Msg3、Msg5和MsgA。
在一种可选的方案中，若该终端设备处于RRC连接态，该计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在一种可选的方案中，该处理单元1201，还用于通过该通信单元1202接收来自该网络设备的配置信息，该配置信息用于配置该第一DCI的参数。
在一种可选的方案中，该配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，该发送周期为该第一DCI的发送间隔，该第一偏移量为计算该第一DCI的发送起始位置的参数，该时频控制资源位置指示用于指示该第一DCI的时频资源位置，该搜索空间指示用于指示该第一DCI的搜索范围和/或搜索方式，该占用时长为该时频控制资源的连续持续时间。
在一种可选的方案中，该处理单元1201，还用于通过该通信单元1202接收来自该网络设备的第二DCI，该第二DCI用于调度该第一消息，其中，该第二DCI是通过该无线网络临时标识加扰的，该处理单元1201，还用于通过该通信单元1202向所述终端设备发送所述第一消息，所述第一消息包括配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在一种可选的方案中，该处理单元1201，还用于在满足第一条件时，退出该统计过程，该第一条件包括：在预设时间段内未监听到该第一DCI；连续未监听到所述第一DCI的个数达到预设值；或接收来自该网络设备的第二指示信息，该第二指示信息用于指示该终端设备退出该统计过程。
需要说明的是，各个单元的实现及有益效果还可以对应参照图5所示的方法实施例的相应描述。
请参见图13，图13是本申请实施例提供的一种通信装置1300，该装置1300包括处理器1301和收发器1303，可选的，该装置还包括存储器1302，该处理器1301、存储器1302和收发器1303通过总线1304相互连接。
存储器1302包括但不限于是随机存储记忆体(random access memory，RAM)、只读存储器(read-only memory，ROM)、可擦除可编程只读存储器(erasable programmable read only memory，EPROM)、或便携式只读存储器(compact disc read-only memory，CD-ROM)， 该存储器1302用于相关计算机程序及数据。收发器1303用于接收和发送数据。
处理器1301可以是一个或多个中央处理器(central processing unit，CPU)，在处理器1301是一个CPU的情况下，该CPU可以是单核CPU，也可以是多核CPU。
该装置1300中的处理器1301读取该存储器1302中存储的计算机程序，用于执行以下操作：
向终端设备发送第一下行控制信息DCI，该第一DCI用于调度计数请求信息，该第一DCI是通过无线网络临时标识加扰的；
向该终端设备发送该计数请求信息，该计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
接收来自该终端设备的计数响应信息，该计数响应信息用于响应该计数请求信息。
在一种可选的方案中，该无线网络临时标识为组无线网络临时标识或预设无线网络标识。
在一种可选的方案中，该计数请求信息包括该多播业务的业务标识。
在一种可选的方案中，该处理器1301，还用于通过收发器1303向该终端设备发送接入概率因子，该接入概率因子用于指示发送该计数响应信息的概率。
在一种可选的方案中，该处理器1301，还用于通过收发器1303向该终端设备发送至少一个该接入概率因子，该接入概率因子与该终端设备的无线资源控制RRC状态相关联，其中，该RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在一种可选的方案中，该处理器1301，还用于通过收发器1303向该终端设备发送第一指示信息，该第一指示信息用于指示该计数响应信息的时频资源。
在一种可选的方案中，该计数响应信息包括：该多播业务的指示信息，该指示信息用于指示正在接收或感兴趣接收该多播业务。
在一种可选的方案中，该计数响应信息包括：该多播业务的业务标识、该多播业务对应的波束指示、该多播业务对应的带宽部分BWP指示和该终端设备的位置指示信息中至少一项。
在一种可选的方案中，该计数响应信息承载于随机接入消息中，该随机接入消息为Msg1、Msg3、Msg5或MsgA。
在一种可选的方案中，该计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在一种可选的方案中，该处理器1301，还用于通过收发器1303向该终端设备发送配置信息，该配置信息用于配置接收该第一DCI的参数。
在一种可选的方案中，该配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，其中，该发送周期为该第一DCI的发送间隔，该第一偏移量为计算该第一DCI的发送起始位置的参数，该时频控制资源位置指示用于指示该第一DCI的时频资源位置，该搜索空间指示用于指示该第一DCI的搜索范围和/或和搜索方式，该占用时长为该时频控制资源位置指示的连续持续时间。
在一种可选的方案中，该处理器1301，还用于通过收发器1303向该终端设备发送第二DCI，该第二DCI用于调度该第一消息，其中，该第二DCI是通过该无线网络临时标识 加扰的，向所述终端设备发送第一消息，所述第一消息包括所述配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
在一种可选的方案中，该处理器1301，还用于通过收发器1303向该终端设备发送第二指示信息，该第二指示信息用于指示该终端设备终止统计过程。
需要说明的是，各个操作的实现及有益效果还可以对应参照图5所示的方法实施例的相应描述。
请参见图14，图14是本申请实施例提供的一种通信装置1400，该装置1400包括处理器1401和收发器1403，可选的，该装置还包括存储器1402，该处理器1401、存储器1402和收发器1403通过总线1404相互连接。
存储器1402包括但不限于是随机存储记忆体(random access memory，RAM)、只读存储器(read-only memory，ROM)、可擦除可编程只读存储器(erasable programmable read only memory，EPROM)、或便携式只读存储器(compact disc read-only memory，CD-ROM)，该存储器1402用于相关计算机程序及数据。收发器1403用于接收和发送数据。
处理器1401可以是一个或多个中央处理器(central processing unit，CPU)，在处理器1401是一个CPU的情况下，该CPU可以是单核CPU，也可以是多核CPU。
该装置1400中的处理器1401读取该存储器1402中存储的计算机程序，用于执行以下操作：
接收来自网络设备的第一下行控制信息DCI，该第一DCI用于调度计数请求信息，该第一DCI是通过无线网络临时标识加扰的；
接收来自该网络设备的该计数请求信息，该计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
向该网络设备发送该计数响应信息，该计数响应信息用于响应该计数请求信息。
在一种可选的方案中，该计数请求信息包括该多播业务的业务标识。
在一种可选的方案中，该无线网络临时标识为组无线网络临时标识或预设无线网络临时标识。
在一种可选的方案中，该处理器1401，还用于通过收发器1403接收来自该网络设备的接入概率因子，该接入概率因子用于指示发送该计数响应信息的概率。
在一种可选的方案中，该处理器1401，还用于通过收发器1403接收来自该网络设备的至少一个该接入概率因子，该接入概率因子与该终端设备的无线资源控制RRC状态相关联，其中，该RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
在一种可选的方案中，该处理器1401，还用于从预设范围内选择随机数；若该随机数小于或等于该接入概率因子，通过收发器1403向该网络设备发送该计数响应信息。
在一种可选的方案中，该处理器1401，还用于通过收发器1403接收该网络设备发送的第一指示信息，该第一指示信息用于指示该计数响应信息的时频资源。
在一种可选的方案中，该计数响应信息包括：该多播业务的指示信息，该指示信息用于指示正在接收或感兴趣接收该多播业务。
在一种可选的方案中，该计数响应信息包括：该多播业务的业务标识、该多播业务对 应的波束指示、该多播业务的对应的部分带宽BWP指示和该终端设备所处的位置指示信息中至少一项。
在一种可选的方案中，若该终端设备处于RRC空闲态或RRC非激活态，该计数响应信息承载于随机接入消息中，该随机接入消息为Msg1、Msg3、Msg5或MsgA。
在一种可选的方案中，若该终端设备处于RRC连接态，该计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
在一种可选的方案中，该处理器1401，还用于通过收发器1403接收来自该网络设备的配置信息，该配置信息用于配置接收该第一DCI的参数。
在一种可选的方案中，该配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，该发送周期为该第一DCI的发送间隔，该第一偏移量为计算该第一DCI的发送起始位置的参数，该时频控制资源位置指示用于指示该第一DCI的时频资源位置，该搜索空间指示用于指示该第一DCI的搜索范围和/或和搜索方式，该占用时长为该时频控制资源的连续持续时间。
在一种可选的方案中，该处理器1401，还用于通过收发器1403接收来自该网络设备的第二DCI，该第二DCI用于调度该第一消息，其中，该第二DCI是通过该无线网络临时标识加扰的，向该终端设备发送该第一消息，该第一消息包括配置信息，其中，该第一消息为系统消息或者多播消息或者RRC消息。
在一种可选的方案中，在满足第一条件时，该终端设备终止统计过程，该第一条件包括：在预设时间段内未监听到该第一DCI；或连续未监听到所述第一DCI的个数达到预设值；或接收来自该网络设备的第二指示信息，该第二指示信息用于指示该终端设备退出该统计过程。
需要说明的是，各个操作的实现及有益效果还可以对应参照图5所示的方法实施例的相应描述。
本申请实施例还提供一种芯片系统，所述芯片系统包括至少一个处理器，存储器和接口电路，所述存储器、所述收发器和所述至少一个处理器通过线路互联，所述至少一个存储器中存储有计算机程序；所述计算机程序被所述处理器执行时，图5所示的方法流程得以实现。
本申请实施例还提供一种计算机可读存储介质，所述计算机可读存储介质中存储有计算机程序，当其在处理器上运行时，图5所示的方法流程得以实现。
本申请实施例还提供一种计算机程序产品，当所述计算机程序产品在终端上运行时，图5所示的方法流程得以实现。
本申请实施例还提供一种通信系统，所述通信系统包括网络设备和终端设备，当其在终端设备或网络设备上运行时，图5所示的方法流程得以实现。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，该流程可以由计算机程序来计算机程序相关的硬件完成，该计算机程序可存储于计算机可读取存储介质中，该计算机程序在执行时，可包括如上述各方法实施例的流程。而前述的存储介质包括：ROM或随机存储记忆体RAM、磁碟或者光盘等各种可存储计算机程序代码的介质。

Claims (56)

  1. 一种通信方法，其特征在于，所述方法适用于终端设备，包括：
    确定特定数值的子载波间隔对应的最小时间单元为对应于多播/组播单频网络MBSFN的有效最小时间单元；
    若所述有效最小时间单元中任一子帧可以承载组播控制逻辑信道MCCH，则确定通过所述有效最小时间单元可以承载MCCH；
    在所述有效最小时间单元中通过所述MCCH接收来自所述网络设备的多媒体广播多播业务。
  2. 根据权利要求1所述的方法，其特征在于，所述特定数值的子载波间隔为0.37千赫兹kHz，所述最小时间单元为时隙，所述时隙的长度为3毫秒ms。
  3. 根据权利要求2所述的方法，其特征在于，所述时隙为0.37kHz对应的帧结构中的任一个时隙，所述0.37kHz对应的帧结构包括：
    从0到12递增编号的13个时隙，所述13个时隙位于从第一位置起始的40ms间隔内，所述第一位置满足条件nf mod 4＝0，其中，时隙0开始于30720Ts，nf是无线帧编号，Ts是基本时间单元，mod为取模运算。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述方法还包括：
    根据子帧分配信息sf-AllocInfo，确定承载MCCH的子帧在无线帧中的位置。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述无线帧是根据MCCH重复周期mcch-RepetitionPeriod和MCCH偏移量mcch-Offset确定的。
  6. 根据权利要求5所述的方法，其特征在于，所述无线帧满足如下公式：
    SFN mod mcch-RepetitionPeriod＝mcch-Offset；
    其中，SFN为系统帧编号，mod为取模运算。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述确定特定数值的子载波间隔对应的最小时间单元为对应于MBSFN的有效最小时间单元，包括：
    若所述最小时间单元中所有子帧均被配置为用于传输MBSFN业务，则确定所述最小时间单元为有效最小时间单元。
  8. 根据权利要求7所述的方法，其特征在于，所述方法还包括：
    根据来自网络设备的多播子帧配置信息确定对应于MBSFN业务的子帧。
  9. 根据权利要求1-8任一项所述的方法，其特征在于，所述方法还包括：
    在确定可以承载MCCH的最小时间单元上接收来自所述网络设备的多媒体广播多播业务MBMS。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，包括：
    接收来自所述网络设备的所述特定数值的子载波间隔。
  11. 一种通信方法，其特征在于，所述方法适用于网络设备，包括：
    向终端设备发送特定数值的子载波间隔，所述特定数值的子载波间隔对应的最小时间单元为对应于多播/组播单频网络MBSFN的有效最小时间单元；
    在所述有效最小时间单元中任一子帧可以承载组播控制逻辑信道MCCH的情况下，在所述有效最小时间单元中通过所述MCCH发送多媒体广播多播业务。
  12. 根据权利要求11所述的方法，其特征在于，所述特定数值的子载波间隔为0.37千赫兹kHz，所述最小时间单元为时隙，所述时隙的长度为3毫秒ms。
  13. 根据权利要求12所述的方法，其特征在于，所述时隙为0.37kHz对应的帧结构中的任一个时隙，所述0.37kHz对应的帧结构包括：
    从0到12递增编号的13个时隙，所述13个时隙位于从第一位置起始的40ms间隔内，所述第一位置满足条件nf mod 4＝0，其中，时隙0开始于30720Ts，nf是无线帧编号，Ts是基本时间单元，mod为取模运算。
  14. 根据权利要求11-13任一项所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送子帧配置信息sf-AllocInfo，所述子帧分配信息sf-AllocInfo用于确定承载MCCH的子帧在无线帧中的位置。
  15. 根据权利要求11-14任一项所述的方法，其特征在于，所述无线帧是根据MCCH重复周期mcch-RepetitionPeriod和MCCH偏移量mcch-Offset确定的。
  16. 根据权利要求15所述的方法，其特征在于，所述无线帧满足如下公式：
    SFN mod mcch-RepetitionPeriod＝mcch-Offset；
    其中，SFN为系统帧编号，mod为取模运算。
  17. 根据权利要求11-16任一项所述的方法，其特征在于，包括：
    在所述最小时间单元中所有子帧均被配置用于传输MBSFN业务的情况下，所述最小时间单元为有效最小时间单元。
  18. 根据权利要求17所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送多播子帧配置信息，所述多播子帧配置信息用于确定对应于 MBSFN业务的子帧。
  19. 一种通信方法，其特征在于，所述方法适用于网络设备，包括：
    向终端设备发送第一下行控制信息DCI，所述第一DCI用于调度计数请求信息，所述第一DCI是通过无线网络临时标识加扰的；
    向所述终端设备发送所述计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
    接收来自所述终端设备的计数响应信息，所述计数响应信息用于响应所述计数请求信息。
  20. 根据权利要求19所述的方法，其特征在于，所述无线网络临时标识为组无线网络临时标识或预设无线网络标识。
  21. 根据权利要求19或20所述的方法，其特征在于，所述计数请求信息包括所述多播业务的业务标识。
  22. 根据权利要求19-21任一项所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送接入概率因子，所述接入概率因子用于指示发送所述计数响应信息的概率。
  23. 根据权利要求19-21任一项所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
  24. 根据权利要求19-23任一项所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或所述计数响应信息的时频资源。
  25. 根据权利要求19-24任一项所述的方法，其特征在于，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
  26. 根据权利要求19-24任一项所述的方法，其特征在于，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务对应的带宽部分BWP指示和所述终端设备的位置指示信息中至少一项。
  27. 根据权利要求19-25任一项所述的方法，其特征在于，包括：
    所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5 或MsgA。
  28. 根据权利要求26所述的方法，其特征在于，包括：
    所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
  29. 根据权利要求19-28任一项所述的方法，其特征在于，所述方法还包括：
    向所述终端设备发送配置信息，所述配置信息用于配置接收所述第一DCI的参数。
  30. 根据权利要求29所述的方法，其特征在于，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，其中，所述发送周期用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索范围和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
  31. 根据权利要求29或30所述的方法，其特征在于，包括：
    向所述终端设备发送第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；
    向所述终端设备发送所述第一消息，所述第一消息包括所述配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
  32. 根据权利要求29-31任一项所述的方法，其特征在于，所述方法还包括：
    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终止统计过程。
  33. 一种通信方法，其特征在于，所述方法适用于终端设备，包括：
    接收来自网络设备的第一下行控制信息DCI，所述第一DCI用于调度计数请求信息，所述第一DCI是通过无线网络临时标识加扰的；
    接收来自所述网络设备的所述计数请求信息，所述计数请求信息用于统计正在接收或感兴趣接收的多播业务的终端设备的个数；
    向所述网络设备发送所述计数响应信息，所述计数响应信息用于响应所述计数请求信息。
  34. 根据权利要求33所述的方法，其特征在于，所述无线网络临时标识为组无线网络临时标识或预设无线网络临时标识。
  35. 根据权利要求33或34所述的方法，其特征在于，所述计数请求信息包括所述多播业务的业务标识。
  36. 根据权利要求33-35任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述网络设备的接入概率因子，所述接入概率因子用于指示发送所述计数响应信息的概率。
  37. 根据权利要求33-35任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述网络设备的至少一个所述接入概率因子，所述接入概率因子与所述终端设备的无线资源控制RRC状态相关联，其中，所述RRC状态包括RRC空闲态、RRC非激活态或RRC连接态。
  38. 根据权利要求33-37任一项所述的方法，其特征在于，所述方法还包括：
    从预设范围内选择随机数；
    若所述随机数小于或等于所述接入概率因子，向所述网络设备发送所述计数响应信息。
  39. 根据权利要求33-38任一项所述的方法，其特征在于，所述方法还包括：
    接收所述网络设备发送的第一指示信息，所述第一指示信息用于指示所述计数请求信息和/或所述计数响应信息的时频资源。
  40. 根据权利要求33-39任一项所述的方法，其特征在于，所述计数响应信息包括：所述多播业务的指示信息，所述指示信息用于指示正在接收或感兴趣接收所述多播业务。
  41. 根据权利要求33-39任一项所述的方法，其特征在于，所述计数响应信息包括：所述多播业务的业务标识、所述多播业务对应的波束指示、所述多播业务的对应的部分带宽BWP指示和所述终端设备所处的位置指示信息中至少一项。
  42. 根据权利要求33-40任一项所述的方法，其特征在于，包括：
    所述计数响应信息承载于随机接入消息中，所述随机接入消息为Msg1、Msg3、Msg5或MsgA。
  43. 根据权利要求40或41所述的方法，其特征在于，包括：
    所述计数响应信息承载于RRC消息、媒体接入控制控制元素MAC CE或控制协议数据单元。
  44. 根据权利要求33-43任一项所述的方法，其特征在于，所述方法还包括：
    接收来自所述网络设备的配置信息，所述配置信息用于配置接收所述第一DCI的参数。
  45. 根据权利要求44所述的方法，其特征在于，所述配置信息包括发送周期、第一偏移量、时频控制资源位置指示、搜索空间指示和占用时长中的至少一项，所述发送周期为 用于指示所述第一DCI的发送间隔，所述第一偏移量用于指示所述第一DCI的发送起始位置，所述时频控制资源位置指示用于指示所述第一DCI的时频资源位置，所述搜索空间指示用于指示所述第一DCI的搜索范围和/或搜索方式，所述占用时长用于指示传输所述第一DCI的持续时间。
  46. 根据权利要求44或45所述的方法，其特征在于，包括：
    接收来自所述网络设备的第二DCI，所述第二DCI用于调度第一消息，其中，所述第二DCI是通过所述无线网络临时标识加扰的；
    向所述终端设备发送所述第一消息，所述第一消息包括配置信息，其中，所述第一消息为系统消息或者多播消息或者RRC消息。
  47. 根据权利要求44-46任一项所述的方法，其特征在于，所述方法还包括：
    在满足第一条件时，所述终端设备终止统计过程，所述第一条件包括：
    在预设时间段内未监听到所述第一DCI；或
    连续未监听到所述第一DCI的个数达到预设值；或
    接收来自所述网络设备的第二指示信息，所述第二指示信息用于指示终止所述统计过程。
  48. 一种通信装置，其特征在于，包括用于执行如权利要求1至10中任一项所述的方法的单元。
  49. 一种通信装置，其特征在于，包括用于执行如权利要求11至18中任一项所述的方法的单元。
  50. 一种通信装置，其特征在于，包括用于执行如权利要求19至32中任一项所述的方法的单元。
  51. 一种通信装置，其特征在于，包括用于执行如权利要求33至47中任一项所述的方法的单元。
  52. 一种通信装置，包括至少一个处理器，和收发器，其特征在于：
    所述收发器和所述至少一个处理器连接，所述收发器用于获取计算机程序，所述处理器通过运行所述计算机程序以执行权利要求1至10中任一项所述的通信方法。
  53. 一种通信装置，包括至少一个处理器，和收发器，其特征在于：
    所述收发器和所述至少一个处理器连接，所述收发器用于获取计算机程序，所述处理器通过运行所述计算机程序以执行权利要求11至18中任一项所述的通信方法。
  54. 一种通信装置，包括至少一个处理器，和收发器，其特征在于：
    所述收发器和所述至少一个处理器连接，所述收发器用于获取计算机程序，所述处理器通过运行所述计算机程序以执行权利要求19至32中任一项所述的通信方法。
  55. 一种通信装置，包括至少一个处理器，和收发器，其特征在于：
    所述收发器和所述至少一个处理器连接，所述收发器用于获取计算机程序，所述处理器通过运行所述计算机程序以执行权利要求33至47中任一项所述的通信方法。
  56. 一种计算机可读存储介质，其特征在于，所述计算机可读存储介质中存储有指令，当所述指令在计算机上运行时，使得计算机实现如权利要求1至10中任一项所述的通信方法、实现如权利要求11至18中任一项所述的通信方法、实现如权利要求19至32中任一项所述的通信方法、或实现如权利要求33至47中任一项所述的通信方法。
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