WO2023103832A1 - 广播多播业务的发送方法、装置及系统 - Google Patents

广播多播业务的发送方法、装置及系统 Download PDF

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Publication number
WO2023103832A1
WO2023103832A1 PCT/CN2022/134919 CN2022134919W WO2023103832A1 WO 2023103832 A1 WO2023103832 A1 WO 2023103832A1 CN 2022134919 W CN2022134919 W CN 2022134919W WO 2023103832 A1 WO2023103832 A1 WO 2023103832A1
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WIPO (PCT)
Prior art keywords
mtch
frequency domain
terminal
multicast service
mcch
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PCT/CN2022/134919
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English (en)
French (fr)
Inventor
孙欢
罗之虎
金哲
余政
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华为技术有限公司
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Publication of WO2023103832A1 publication Critical patent/WO2023103832A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • 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
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast

Definitions

  • the embodiments of the present application relate to the communication field, and in particular, to a broadcast multicast service sending method, device and system.
  • the application scenarios of the fifth generation (5th generation, 5G) mobile communication technology mainly include: enhanced mobile broadband (eMBB), ultra-reliable low latency communication (URLLC), massive machine class Communication (massive machine type communication, mMTC).
  • eMBB enhanced mobile broadband
  • URLLC ultra-reliable low latency communication
  • mMTC massive machine class Communication
  • broadband terminals are introduced.
  • narrowband terminals are introduced. Compared with broadband terminals, narrowband terminals have lower bandwidth capabilities.
  • the demand of the narrowband terminal for the broadcast multicast service is also further expanded.
  • MBS multicast broadcast service
  • system firmware upgrades may be performed multiple times during the life cycle of the smart watch, and the upgrade package required for the firmware upgrade may be broadcast or multicast by the server. form sent.
  • the smart watch may need to receive natural disaster warning messages such as earthquakes and tsunamis, and the natural disaster warning messages are usually sent in the form of broadcast or multicast.
  • the present application provides a method, device and system for sending broadcast and multicast services.
  • the receivers of broadcast and multicast services include narrowband terminals and broadband terminals
  • the broadcast and multicast services can be reasonably configured and sent to reduce resource overhead. .
  • a broadcast and multicast service sending method may be executed by an access network device, or by a component of the access network device, such as a processor, a chip, or a chip system of the access network device It can also be implemented by a logic module or software that can realize all or part of the functions of the access network equipment.
  • the method includes:
  • Receive indication information from the core network equipment where the indication information indicates that receivers of the target broadcast multicast service include narrowband terminals and broadband terminals.
  • the MCCH is used to bear the configuration information of the MTCH of the target broadcast multicast service.
  • the first frequency domain resource corresponding to the MCCH or the occupied scheduling bandwidth does not exceed the maximum bandwidth capability of the narrowband terminal.
  • the first frequency domain resources corresponding to the MCCH or the occupied scheduling bandwidth is limited to not exceed the maximum bandwidth capability of the narrowband terminal, so the narrowband terminal is capable of receiving the MCCH, so that the access network device can send the MCCH once, and the narrowband terminal and All broadband terminals can receive the MCCH.
  • resource overhead is reduced.
  • the first frequency domain resource corresponding to the MCCH is the maximum bandwidth that the MCCH can occupy.
  • the first frequency domain resource is a common frequency domain resource CFR.
  • the indication information includes at least one indicator.
  • the at least one indicator includes a target broadcast multicast service.
  • an indicator corresponding to a broadcast multicast service identifier that is, to use an indicator with service as the granularity, which can more flexibly indicate the type of receiver corresponding to each service, and realize the correspondence between different services Indication of different recipient types.
  • one indicator can be designed to correspond to the identifiers of multiple broadcast-multicast services, that is, one indicator can be used to indicate the types of receivers of multiple broadcast-multicast services, which can save signaling overhead for indicating information.
  • one RNTI can be used to scramble the MCCH, that is, the narrowband terminal and the broadband terminal can share one RNTI, which saves RNTI overhead.
  • the total number of MTCH configuration information carried by the MCCH does not exceed a threshold, which is the upper limit of the number of MTCH configurations carried by the MCCH for broadband terminals or narrowband terminals.
  • the number of MTCH configuration information carried by it cannot be infinitely increased. Based on this possible implementation, the number of MTCH configuration information is limited to meet the TBS limitation of the MCCH.
  • sending target broadcast and multicast services to narrowband terminals and broadband terminals on frequency domain resources corresponding to MTCHs includes: frequency domain resources corresponding to N MTCHs Send M target broadcast multicast services to the narrowband terminal and the broadband terminal, where N and M are positive integers.
  • the access network device can send the broadcast multicast service to the narrowband terminal and the broadband terminal respectively, thereby improving the flexibility of sending the broadcast multicast service.
  • the method before sending the MCCH to the narrowband terminal and the broadband terminal, the method further includes: determining the MCCH.
  • a method for receiving a broadcast multicast service may be executed by a terminal, or may be executed by a component of the terminal, such as a processor, a chip, or a chip system of the terminal, or may be implemented by a device capable of realizing all Or a logical module or software implementation of some terminal functions.
  • the terminal is a narrowband terminal or a broadband terminal.
  • the method includes:
  • the MCCH is used to bear the configuration information of the MTCH of the target broadcast multicast service.
  • the first frequency domain resource corresponding to the MCCH or the scheduling bandwidth occupied does not exceed the maximum bandwidth capability of the narrowband terminal.
  • the first frequency domain resource corresponding to the MCCH is the maximum bandwidth that the MCCH can occupy.
  • the first frequency domain resource is a common frequency domain resource CFR.
  • the total number of MTCH configuration information carried by the MCCH does not exceed a threshold, and the threshold is when the MCCH carries the MTCH configuration for broadband terminals or narrowband terminals.
  • a method for sending a broadcast multicast service is provided, and the method may be executed by an access network device, or by a component of the access network device, such as a processor, a chip, or a chip system of the access network device It can also be implemented by a logic module or software that can realize all or part of the functions of the access network equipment.
  • the method includes: receiving indication information from core network equipment, where the indication information indicates that receivers of target broadcast multicast services include narrowband terminals and broadband terminals;
  • the first multicast control logical channel MCCH is sent to the narrowband terminal, and the second MCCH is sent to the broadband terminal.
  • the target broadcast and multicast service is sent to the narrowband terminal and the broadband terminal on frequency domain resources corresponding to the broadcast service logical channel MTCH of the target broadcast and multicast service.
  • the first MCCH is used to bear the first configuration information of the MTCH of the target broadcast multicast service
  • the second MCCH is used to bear the second configuration information of the MTCH of the target broadcast multicast service.
  • the frequency domain resource corresponding to the MTCH configured in the first configuration information is the same as the frequency domain resource corresponding to the MTCH configured in the second configuration information.
  • the frequency domain resources corresponding to the MTCH configured by the configuration information of the MTCH sent to the narrowband terminal and the configuration information of the MTCH sent to the broadband terminal are the same, so that both the narrowband terminal and the broadband terminal can receive Broadcast and multicast services sent on frequency domain resources, so that for receivers including narrowband terminals and broadband terminals, access network equipment can send broadcast and multicast services once, compared to access network equipment for narrowband terminals and broadband terminals separately
  • the scheme of sending SIBX, MCCH, and MTCH can reduce resource overhead.
  • the indication information includes at least one indicator, and the at least one indicator corresponds to an identifier of at least one broadcast-multicast service, and the at least one broadcast-multicast service includes Target broadcast multicast service.
  • the first configuration information includes a first group of wireless network temporary identifiers G-RNTI
  • the second configuration information includes a second G-RNTI
  • the first G-RNTI Same as the second G-RNTI, the first G-RNTI and the second G-RNTI are used to scramble the target broadcast multicast service.
  • the narrowband terminal and the broadband terminal share one G-RNTI, which can save available G-RNTI resources.
  • the first configuration information includes a first identifier of the target broadcast multicast service
  • the second configuration information includes a second identifier of the target broadcast multicast service
  • the first The ID is the same as the second ID.
  • the candidate frequency domain positions of the first physical downlink control channel PDCCH and the candidate frequency domain positions of the second PDCCH partially or completely overlap.
  • the first PDCCH is used to carry the first downlink control information DCI
  • the first DCI is used to schedule frequency domain resources corresponding to the MTCH for narrowband terminals; Frequency domain resources corresponding to the MTCH are scheduled.
  • the first DCI and the second DCI can occupy the overlapping candidate frequency domain positions, that is, narrowband terminals
  • the DCI of the frequency domain resource corresponding to the MTCH for scheduling the target broadcast multicast service can occupy the same frequency domain position as the DCI of the frequency domain resource corresponding to the MTCH for scheduling the target broadcast multicast service for the broadband terminal, thereby saving frequency domain resource overhead .
  • the candidate time domain position of the first PDCCH and the candidate time domain position of the second PDCCH partially or completely overlap.
  • the first DCI and the second DCI can occupy the overlapping candidate time domain positions, that is, narrowband terminals
  • the DCI of the frequency domain resource corresponding to the MTCH for scheduling the target broadcast multicast service can occupy the same time domain position as the DCI of the frequency domain resource corresponding to the MTCH for scheduling the target broadcast multicast service for the broadband terminal, thereby saving time domain resource overhead .
  • the method further includes: sending the first DCI to the narrowband terminal and the broadband terminal on the first time-frequency resource,
  • the frequency domain position of the first time-frequency resource is located in the overlapping part of the candidate frequency domain position of the first PDCCH and the candidate frequency domain position of the second PDCCH, and the time domain position of the first time-frequency resource is located between the candidate time domain position of the first PDCCH and the candidate frequency domain position of the second PDCCH.
  • the access network device can send a DCI for scheduling frequency domain resources corresponding to MTCH to narrowband terminals and broadband terminals on the same time-frequency resource, that is, to schedule frequency domain resources corresponding to MTCH for narrowband terminals and broadband terminals.
  • the DCI of the domain resource is the same DCI, and there is no need to send different DCIs for the narrowband terminal and the broadband terminal on different time-frequency resources, thereby reducing the overhead of scheduling resources.
  • a method for receiving a broadcast multicast service may be executed by a narrowband terminal, or by a component of the narrowband terminal, such as a processor, a chip, or a chip system of the narrowband terminal, or by A logic module or software implementation that can realize all or part of the narrowband terminal functions.
  • the method includes:
  • the first MCCH is used to bear the first configuration information of the MTCH of the target broadcast multicast service.
  • the frequency domain resources corresponding to the MTCH configured in the first configuration information are the same as the frequency domain resources corresponding to the MTCH configured in the second configuration information, and the second configuration information is configuration information of the MTCH used for broadband terminals.
  • a method for receiving a broadcast multicast service may be executed by a broadband terminal, or by a component of the broadband terminal, such as a processor, a chip, or a chip system of the broadband terminal, or by A logic module or software implementation that can realize all or part of the functions of a broadband terminal.
  • the method includes:
  • the second MCCH is used to bear the second configuration information of the MTCH of the target broadcast multicast service.
  • the frequency domain resource corresponding to the MTCH configured in the second configuration information is the same as the frequency domain resource corresponding to the MTCH configured in the first configuration information
  • the first configuration information is configuration information of the MTCH used for the narrowband terminal.
  • the first configuration information includes the first group of radio network temporary identifiers G-RNTI
  • the second configuration information includes the second G-RNTI.
  • - RNTI, the first G-RNTI and the second G-RNTI are the same, and the first G-RNTI and the second G-RNTI are used to scramble the target broadcast multicast service.
  • the first configuration information includes the first identifier of the target broadcast multicast service
  • the second configuration information includes the target broadcast multicast service
  • the first identifier and the second identifier are the same.
  • the fourth aspect or the fifth aspect in a possible implementation manner of the fourth aspect or the fifth aspect, part or all of the candidate frequency domain positions of the first physical downlink control channel PDCCH and the candidate frequency domain positions of the second PDCCH overlapping.
  • the first PDCCH is used to carry the first downlink control information DCI
  • the first DCI is used to schedule frequency domain resources corresponding to the MTCH for narrowband terminals; Frequency domain resources corresponding to the MTCH are scheduled.
  • the candidate time domain positions of the first PDCCH and the candidate time domain positions of the second PDCCH partially or completely overlap.
  • the first DCI is the same as the second DCI.
  • the method further includes: receiving the first DCI from the access network device on the first time-frequency resource, the frequency domain position of the first time-frequency resource is located in the candidate frequency domain position of the first PDCCH and the candidate frequency domain position of the second PDCCH In the overlapping part of the positions, the time domain position of the first time-frequency resource is located in the overlapping part of the candidate time domain position of the first PDCCH and the candidate time domain position of the second PDCCH.
  • a method for sending a broadcast multicast service may be executed by a core network device, or may be executed by a component of the core network device, such as a processor, a chip, or a chip system of the core network device. It can also be realized by a logic module or software that can realize all or part of the functions of the core network equipment.
  • the method includes: generating indication information, and sending the indication information to the access network device. Wherein, the indication information is used to indicate that the recipients of the target broadcast multicast service include narrowband terminals and broadband terminals.
  • the indication information includes at least one indicator.
  • the at least one indicator includes a target broadcast multicast service.
  • a communication device for implementing the above various methods.
  • the communication device may be the access network device in the first aspect or the third aspect above, or a device included in the access network device above, such as a chip; or, the communication device may be the second aspect or the fourth aspect or The terminal in the fifth aspect, or a device included in the above-mentioned terminal, such as a chip; or, the communication device may be the core network device in the sixth aspect above, or a device included in the above-mentioned core network device, such as a chip.
  • the communication device includes a corresponding module, unit, or means (means) for implementing the above method, and the module, unit, or means can be implemented by hardware, software, or by executing corresponding software on hardware.
  • the hardware or software includes one or more modules or units corresponding to the above functions.
  • the communication device may include a receiving module and a sending module, respectively configured to implement the receiving function and the sending function in any one of the above aspects and any possible implementation manners thereof.
  • the receiving module can be composed of receiving circuit, receiver, receiver or input interface.
  • the sending module may consist of a sending circuit, a sender, a sender or an output interface.
  • the communications device may further include a processing module.
  • the processing module may be used to implement the processing functions in any of the above aspects and any possible implementation manners thereof.
  • a communication device including: a processor and a memory; the memory is used to store computer instructions, and when the processor executes the instructions, the communication device executes the method described in any one of the above aspects.
  • the communication device may be the access network device in the first aspect or the third aspect above, or a device included in the access network device above, such as a chip; or, the communication device may be the second aspect or the fourth aspect or The terminal in the fifth aspect, or a device included in the above-mentioned terminal, such as a chip; or, the communication device may be the core network device in the sixth aspect above, or a device included in the above-mentioned core network device, such as a chip.
  • a communication device including: a processor and a communication interface; the communication interface is used to communicate with modules other than the communication device; the processor is used to execute computer programs or instructions, so that the communication device Perform the method described in any one of the above aspects.
  • the communication device may be the access network device in the first aspect or the third aspect above, or a device included in the access network device above, such as a chip; or, the communication device may be the second aspect or the fourth aspect or The terminal in the fifth aspect, or a device included in the above-mentioned terminal, such as a chip; or, the communication device may be the core network device in the sixth aspect above, or a device included in the above-mentioned core network device, such as a chip.
  • a communication device including: a logic circuit and an interface circuit; the interface circuit is used to acquire information to be processed and/or output processed information; the logic circuit is used to perform any of the above-mentioned A method for processing the information to be processed and/or generating the processed information.
  • the communication device may be the access network device in the first aspect or the third aspect above, or a device included in the access network device above, such as a chip; or, the communication device may be the second aspect or the fourth aspect or The terminal in the fifth aspect, or a device included in the above-mentioned terminal, such as a chip; or, the communication device may be the core network device in the sixth aspect above, or a device included in the above-mentioned core network device, such as a chip.
  • a communication device including: an interface circuit and a processor, the interface circuit is a code/data read and write interface circuit, and the interface circuit is used to receive computer-executed instructions (the computer-executed instructions are stored in a memory, It may be directly read from the memory, or may be transmitted through other devices) and transmitted to the processor; the processor is used to execute computer-executed instructions to make the communication device perform the method described in any one of the above aspects.
  • the communication device may be the access network device in the first aspect or the third aspect above, or a device included in the access network device above, such as a chip; or, the communication device may be the second aspect or the fourth aspect or The terminal in the fifth aspect, or a device included in the above-mentioned terminal, such as a chip; or, the communication device may be the core network device in the sixth aspect above, or a device included in the above-mentioned core network device, such as a chip.
  • a communication device including: at least one processor; the processor is configured to execute computer programs or instructions, so that the communication device executes the method described in any one of the above aspects.
  • the communication device may be the access network device in the first aspect or the third aspect above, or a device included in the access network device above, such as a chip; or, the communication device may be the second aspect or the fourth aspect or The terminal in the fifth aspect, or a device included in the above-mentioned terminal, such as a chip; or, the communication device may be the core network device in the sixth aspect above, or a device included in the above-mentioned core network device, such as a chip.
  • the communication device includes a memory for storing necessary program instructions and data.
  • the memory can be coupled to the processor, or it can be independent of the processor.
  • the communication device may be a chip or a chip system.
  • the device When the device is a system-on-a-chip, it may consist of chips, or may include chips and other discrete devices.
  • a computer-readable storage medium is provided. Instructions are stored in the computer-readable storage medium. When the computer-readable storage medium is run on a communication device, the method described in any one of the above aspects is implemented.
  • a computer program product containing instructions which enables the method described in any one of the above aspects to be implemented when it is run on a communication device.
  • the above-mentioned sending action/function can be understood as output information
  • the above-mentioned receiving action/function can be understood as input information
  • the technical effect brought by any one of the design methods in the seventh aspect to the fourteenth aspect can refer to the technical effects brought by the different design methods in the first aspect to the sixth aspect above, and will not be repeated here.
  • a communication system includes the access network device, the narrowband terminal, and the broadband terminal described in the above aspect.
  • the communication system may further include the core network device described in the above aspect.
  • FIG. 1 is a schematic diagram of a broadcast mechanism provided by the present application
  • FIG. 2 is a schematic diagram of a DRX mechanism of an MCCH provided by the present application
  • FIG. 3 is a schematic structural diagram of a communication system provided by the present application.
  • FIG. 4 is a schematic structural diagram of a communication device provided by the present application.
  • FIG. 5 is a schematic flowchart of a method for sending a broadcast multicast service provided by the present application
  • FIG. 6 is a schematic diagram of a type of configuration information of an MTCH carried by an MCCH provided by the present application
  • FIG. 7 is a schematic diagram of the relationship between the CFR of MCCH and MTCH provided by the present application.
  • FIG. 8 is a schematic flowchart of another method for sending broadcast multicast services provided by the present application.
  • FIG. 9 is a schematic diagram of configuration information carried by a first MCCH and a second MCCH provided by the present application.
  • FIG. 10 is a schematic diagram of candidate time domain positions of a first PDCCH and a second PDCCH provided by the present application.
  • FIG. 11 is a schematic diagram of another candidate time domain position of the first PDCCH and the second PDCCH provided by the present application.
  • FIG. 12 is a schematic structural diagram of an access network device provided by the present application.
  • FIG. 13 is a schematic structural diagram of a narrowband terminal provided by the present application.
  • FIG. 14 is a schematic structural diagram of a broadband terminal provided by the present application.
  • FIG. 15 is a schematic structural diagram of a core network device provided by the present application.
  • plural means two or more than two.
  • At least one of the following or similar expressions refer to any combination of these items, including any combination of single or plural items.
  • at least one item (piece) of a, b, or c can represent: a, b, c, a-b, a-c, b-c, or a-b-c, where a, b, c can be single or multiple .
  • words such as “first” and “second” are used to distinguish the same or similar items with basically the same function and effect. Those skilled in the art can understand that words such as “first” and “second” do not limit the quantity and execution order, and words such as “first” and “second” do not necessarily limit the difference.
  • words such as “exemplary” or “for example” are used as examples, illustrations or illustrations. Any embodiment or design scheme described as “exemplary” or “for example” in the embodiments of the present application shall not be interpreted as being more preferred or more advantageous than other embodiments or design schemes. To be precise, the use of words such as “exemplary” or “such as” is intended to present related concepts in a concrete manner for easy understanding.
  • references to "an embodiment” throughout the specification mean that a particular feature, structure, or characteristic related to the embodiment is included in at least one embodiment of the present application. Therefore, various embodiments are not necessarily referring to the same embodiment throughout the specification. Furthermore, the particular features, structures or characteristics may be combined in any suitable manner in one or more embodiments. It can be understood that in various embodiments of the present application, the serial numbers of the processes do not mean the order of execution, and the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present application. The implementation process constitutes no limitation.
  • Narrowband terminal and broadband terminal 1. Narrowband terminal and broadband terminal:
  • the bandwidth capability of a narrowband terminal is lower than that of a broadband terminal.
  • the narrowband terminal may also be called a reduced capability (reduced capability, RedCap) terminal. It can be understood that the "bandwidth" in this embodiment of the present application refers to frequency domain bandwidth.
  • CFR Common frequency resource
  • CFR A section configured or defined by the access network device on the group-common physical downlink control channel (PDCCH)/physical downlink share channel (PDSCH) for broadcast and multicast services Continuous public frequency domain resources.
  • PDCCH group-common physical downlink control channel
  • PDSCH physical downlink share channel
  • Multicast broadcast service (MBS):
  • the MBS is a point-to-multipoint service.
  • the MBS service includes a broadcast service service and a multicast service service.
  • data is sent from a single source entity to multiple receivers, or to all users in the broadcast service area, or to users in a multicast group.
  • the MBS is referred to as a broadcast multicast service, and the two can be replaced with each other, which is not specifically limited in the present application.
  • the configuration information of the multicast control logical channel (multicast control channel, MCCH) is carried in the type X system information block (system information block typeX, SIBX), and a or configuration information of multiple broadcast service logical channels (multicast traffic channel, MTCH).
  • MCCH multicast control logical channel
  • SIBX system information block typeX
  • MTCH multicast traffic channel
  • the MCCH is scrambled by a radio network temporary identifier (RNTI).
  • RNTI radio network temporary identifier
  • the MCCH carries information about the support of neighboring cells for the broadcast and multicast services of the cell and the configuration information of the MTCH.
  • the configuration information of MTCH carried in MCCH is mapped to PDSCH transmission.
  • MCCH uses the concept of change period. In each change period, the content carried by MCCH remains unchanged and is sent multiple times according to the repetition period, so that the terminal can obtain MCCH as soon as possible when accessing a cell at any time.
  • the scheduling and reception of MCCH uses a discontinuous reception (DRX) mechanism, which is controlled by DRX cycle, onDuration Timer (onDurationTimer), DRX-Inactivity Timer (DRX-InactivityTimer), etc.
  • DRX discontinuous reception
  • FIG. 2 it is an illustration of the DRX mechanism of the MCCH.
  • the terminal uses the MCCH radio network temporary identifier (MCCH radio network temporary identifier, MCCH-RNTI) to monitor the PDCCH to obtain the scheduling information of the MCCH.
  • MCCH radio network temporary identifier MCCH radio network temporary identifier, MCCH-RNTI
  • the persistence timer is started periodically according to the configured DRX cycle.
  • the DRX inactivity timer is started or restarted in the last subframe of the transmission of the PDSCH carrying the MCCH, and stops after the terminal receives the scheduling information of the MCCH carried in the PDCCH.
  • MTCH configuration information mainly includes:
  • TMGI temporary mobile group identity
  • session ID session ID
  • G-RNTI group radio network temporary identifier
  • DRX parameters used by MTCH such as DRX cycle, onDurationTimer, DRX-InactivityTimer, etc.
  • the carrier where the MTCH is located and the search space configuration of the PDCCH That is, the information carried by the MTCH is mapped to the PDSCH for transmission.
  • the PDCCH is used to carry the scheduling information of the MTCH.
  • the information carried by the MTCH is the broadcast multicast service.
  • MTCH is scrambled using G-RNTI. Different MTCHs can be transmitted on different carriers.
  • the scheduling and reception of MTCH can use the same DRX mechanism and DRX parameters as MCCH, that is, it is controlled by parameters such as DRX cycle, onDurationTimer, and DRX-InactivityTimer.
  • the terminal uses the corresponding G-RNTI to monitor the PDCCH to obtain MTCH scheduling information.
  • this application provides a broadcast and multicast service sending method, which can reasonably configure and send the broadcast and multicast service in the scenario where the narrowband terminal and the broadband terminal need to receive the same broadcast and multicast service, reducing resource overhead as much as possible .
  • the communication system can be a third generation partnership project (third generation partnership project, 3GPP) communication system, for example, NR system, long term evolution (long term evolution, LTE) system, vehicle to everything (V2X) system, LTE and 5G hybrid network system, device-to-device (D2D) communication system, machine to machine (M2M) communication system, Internet of Things (IoT), or other next-generation communication systems.
  • 3GPP third generation partnership project
  • NR system third generation partnership project
  • long term evolution (long term evolution, LTE) system vehicle to everything (V2X) system
  • LTE and 5G hybrid network system LTE and 5G hybrid network system
  • D2D device-to-device
  • M2M machine to machine
  • IoT Internet of Things
  • the communication system may also be a non-3GPP communication system, which is not limited.
  • the technical solution of the embodiment of the present application can be applied to various communication scenarios, for example, it can be applied to one or more of the following communication scenarios: enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (ultra reliable Communication scenarios such as low latency communication (URLLC), machine type communication (MTC), massive machine type communication (mMTC), D2D, V2X, M2M, or IoT.
  • eMBB enhanced mobile broadband
  • ultra reliable Communication scenarios such as low latency communication (URLLC)
  • MTC machine type communication
  • mMTC massive machine type communication
  • D2D V2X, M2M, or IoT.
  • the communication system includes a core network device 301 , an access network device 302 , a narrowband terminal 303 and a broadband terminal 304 .
  • the present application does not specifically limit the number of narrowband terminals and broadband terminals, and the system includes at least two narrowband terminals and at least two broadband terminals.
  • the core network device 301 may be a device responsible for mobility management in the mobile network, such as an access and mobility management function (access and mobility management function, AMF) network element in the NR.
  • the core network device 301 may be a device responsible for session management in the mobile network, such as a session management function (session management function, SMF) network element in the NR.
  • AMF access and mobility management function
  • SMF session management function
  • the access network device 302 is a device for connecting a terminal to a wireless network.
  • the access network device 302 may be a node in a radio access network, may also be called a base station, and may also be called a radio access network (radio access network, RAN) node (or device).
  • the access network device may be a next generation node B (next generation node B, gNB), a transmission reception point (transmission reception point, TRP), a home base station (for example, home evolved NodeB, or home Node B) in a 5G system B, HNB), base band unit (base band unit, BBU), base band pool BBU pool, or WiFi access point (access point, AP), etc.
  • the access network device may be a centralized unit (centralized unit, CU) and/or a distributed unit (distributed unit, DU) in a cloud access network (cloud radio access network, CloudRAN) system.
  • a cloud access network cloud radio access network, CloudRAN
  • it may be a device that implements a base station function in a non-terrestrial network (NTN).
  • NTN non-terrestrial network
  • it may be a device that implements a base station function in IoT, or a device that implements a base station function in V2X, D2D, or M2M, which is not limited in this embodiment of the present application.
  • the narrowband terminal 303 may be a device with a small bandwidth capability and used to implement a wireless communication function.
  • the narrowband terminal may be a wearable device, a wireless terminal in industrial control, a wireless terminal in self driving, a wireless terminal in smart grid, a transportation security (transportation Safety), wireless terminals in smart city, wireless terminals in smart home, etc.
  • the narrowband terminal may be a terminal in IoT, a terminal in D2D communication, or a terminal in M2M communication.
  • the broadband terminal 304 may be a device with relatively large bandwidth capability for realizing wireless communication functions.
  • the broadband terminal can be a cellular phone, a cordless phone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (PDA), Handheld devices (such as smart phones) with wireless communication functions, computing devices or other processing devices connected to wireless modems, vehicle-mounted devices, virtual reality (virtual reality, VR) terminal devices, augmented reality (augmented reality, AR) terminal devices, Wireless terminals in remote medical, etc.
  • VR virtual reality
  • AR augmented reality
  • the relevant functions of the terminal, access network equipment, and core network equipment involved in this application can be realized by one device, or by multiple devices, or by one or more functional modules in one device, or by It can be one or more chips, or it can be a system on chip (system on chip, SOC) or a chip system.
  • the chip system can be composed of chips, or can include chips and other discrete devices, which is not specifically limited in the embodiment of the present application.
  • FIG. 4 is a schematic structural diagram of a communication device 400 provided by an embodiment of the present application.
  • the communication device 400 includes one or more processors 401 and at least one communication interface (the communication interface 404 and one processor 401 are used as an example for illustration in FIG. 4 ), and may also optionally include a communication Line 402 and memory 403.
  • Processor 401 can be a general central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (application-specific integrated circuit, ASIC), digital signal processor (DSP), microcontroller (microcontroller unit , MCU), or artificial intelligence processors and other integrated circuits used to control the program execution of the program of this application.
  • CPU central processing unit
  • ASIC application-specific integrated circuit
  • DSP digital signal processor
  • MCU microcontroller unit
  • artificial intelligence processors and other integrated circuits used to control the program execution of the program of this application.
  • the processor 401 may include one or more CPUs, for example, CPU0 and CPU1 in FIG. 4 .
  • the communication interface 404 is used for communicating with other devices or communication networks.
  • the communication interface 404 may be a device such as a transceiver or a transceiver.
  • the communication interface 404 may also be a transceiver circuit located in the processor 401 to realize signal input and signal output of the processor.
  • the communication line 402 is used for communication between different components included in the communication device 400 .
  • the storage 403 may be a device having a storage function.
  • it can be a read-only memory (ROM) or other type of static storage device that can store static information and instructions, a random access memory (random access memory, RAM) or other types of memory that can store information and instructions
  • a dynamic storage device can also be an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compact discs, laser discs, optical discs, digital versatile discs, blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program code in the form of instructions or data structures and can be stored by a computer Any other medium, but not limited to.
  • the memory may exist independently and be connected to the processor through the communication line 402 . Memory can also be integrated with the processor.
  • the memory 403 is used to store computer-executed instructions for implementing the solution of the present application, and the execution is controlled by the processor 401 .
  • the processor 401 is configured to execute computer-executed instructions stored in the memory 403, so as to implement the methods provided in the embodiments of the present application.
  • the computer-executed instructions in the embodiments of the present application may also be referred to as application program codes, which is not specifically limited in the embodiments of the present application.
  • the communication device 400 may further include an output device 405 and an input device 406 .
  • Output device 405 is in communication with processor 401 and may display information in a variety of ways.
  • the output device 405 may be a liquid crystal display (liquid crystal display, LCD), a light emitting diode (light emitting diode, LED) display device, a cathode ray tube (cathode ray tube, CRT) display device, or a projector (projector), etc.
  • the input device 406 communicates with the processor 401 and can receive user input in various ways.
  • the input device 406 may be a mouse, a keyboard, a touch screen device, or a sensing device, among others.
  • composition structure shown in FIG. 4 does not constitute a limitation to the communication device. Except for the components shown in FIG. certain components, or a different arrangement of components.
  • the name of the message between each device, the name of each parameter, or the name of each information is just an example, and it can also be other names in other embodiments.
  • the method provided by the application does not specifically limit this.
  • each device may perform some or all of the steps in the embodiments of the present application, and these steps or operations are only examples, and the embodiments of the present application may also perform other operations or variations of various operations.
  • each step may be performed in a different order presented in the embodiment of the present application, and it may not be necessary to perform all operations in the embodiment of the present application.
  • the core network device generates indication information.
  • the indication information indicates whether the recipients of the broadcast multicast service include narrowband terminals and broadband terminals.
  • the indication information indicates the type of the receiver of the broadcast multicast service. Types of receivers may include: narrowband terminals, broadband terminals, narrowband terminals, and broadband terminals.
  • the indication information indicates that the recipients of the target broadcast multicast service include narrowband terminals and broadband terminals as an example for illustration.
  • the core network device sends indication information to the access network device.
  • the access network device receives the indication information from the core network device.
  • the core network device may send indication information to the access network device in the signaling including the broadcast multicast service.
  • the core network device may adopt the following two service sending modes when sending broadcast and multicast services to the access network device.
  • Mode 1 As shown in Table 1, one signaling includes a single broadcast-multicast service.
  • Mode 2 As shown in Table 2, one signaling includes multiple broadcast and multicast services.
  • the identifier of the broadcast multicast service (such as TMGI)
  • Other information such as TMGI
  • the identifier of the broadcast-multicast service is used to identify the broadcast-multicast service, one broadcast-multicast service corresponds to one identifier, and the identifiers of different broadcast-multicast services are different.
  • the indication information may include at least one indicator.
  • the at least one broadcast multicast service includes a targeted broadcast multicast service.
  • different values of the indicator represent different situations of receivers of the broadcast-multicast service corresponding to the indicator.
  • the value of the indicator when the value of the indicator is the first value, it means that the receivers of the corresponding broadcast multicast service include narrowband terminals and broadband terminals; when the value of the indicator is the second value, it means that the corresponding broadcast multicast service The receiver of the service is a narrowband terminal; when the value of the indicator is the third value, it indicates that the receiver of the corresponding broadcast multicast service is a broadband terminal.
  • the value of the indicator when the value of the indicator is the first value, it means that the receivers of the corresponding broadcast multicast service include narrowband terminals and broadband terminals; when the value of the indicator is the second value, it means that the corresponding broadcast multicast service
  • the receiver is a narrowband terminal or a broadband terminal. This application does not specifically limit it.
  • the indication information includes an indicator corresponding to a specific target broadcast multicast service, indicating that receivers of the target broadcast multicast service include narrowband terminals and broadband terminals.
  • the indicator may be carried in the signaling including the specific target broadcast multicast service sent by the core network device to the access network device.
  • the indication information includes multiple indicators, and there is a corresponding relationship between the multiple indicators and identifiers of multiple broadcast-multicast services.
  • the plurality of broadcast multicast services includes targeted broadcast multicast services.
  • the multiple indicators include an indicator corresponding to the target broadcast multicast service. Exemplarily, as shown in Table 4, multiple indicators may be carried in the signaling including the target broadcast multicast service sent by the core network device to the access network device.
  • the correspondence between multiple indicators and multiple broadcast multicast service identifiers may be a one-to-one correspondence. That is, one indicator corresponds to one broadcast-multicast service identifier, and different indicators correspond to different broadcast-multicast service identifiers. An indicator is used to indicate whether the receivers of the corresponding broadcast multicast service include narrowband terminals and broadband terminals.
  • the identifier list of the broadcast multicast service in Table 4 may include K identifiers, and the indicator list may include K indicators.
  • the K broadcast and multicast services may include one or more target broadcast and multicast services.
  • K is a positive integer greater than 1.
  • the correspondence between the indicator and the identifier of the broadcast multicast service may be a cross-correspondence, for example, the first indicator corresponds to the identifier of the last broadcast multicast service, and the second indicator corresponds to the penultimate broadcast multicast service identifier.
  • the correspondence between the indicator and the identifier of the broadcast-multicast service is in order, for example, the kth indicator corresponds to the identifier of the k-th broadcast-multicast service, and k is a positive integer ranging from 2 to K.
  • the identifier list of the broadcast-multicast service is ⁇ TMGI#1, TMGI#2, TMGI#3, TMGI#4 ⁇
  • the corresponding indicator list It can be ⁇ indicator1, indicator2, indicator3, indicator4 ⁇ .
  • indicator 1 corresponds to TMGI#1, indicating the type of the receiver of the broadcast multicast service identified by TMGI#1;
  • indicator 2 corresponds to TMGI#2, indicating the broadcast multicast service identified by TMGI#2 The type of the recipient of the broadcast service;
  • indicator 3 corresponds to TMGI#3, indicating the type of receiver of the broadcast multicast service identified by TMGI#3;
  • indicator 4 corresponds to TMGI#4, indicating the broadcast multicast service identified by TMGI#4 The type of receiver.
  • the multiple indicators correspond to some of the identifiers of the multiple broadcast-multicast services.
  • the identifier list of the broadcast multicast service in Table 4 may include K identifiers, and the indicator list may include J indicators, where J is less than K.
  • the J indicators correspond to J identities among the K identities, for example, corresponding to the first J identities, or the latter J identities, or the middle J identities, without limitation.
  • the receiver of the broadcast multicast service identified by the identifier not corresponding to the indicator may be a broadband terminal or a narrowband terminal by default.
  • the use of service-based indication information can more flexibly indicate the types of receivers corresponding to each service, and realize the indication that different services correspond to different types of receivers.
  • the indication information includes an indicator, and there is a corresponding relationship between one indicator and identifiers of multiple broadcast-multicast services.
  • Each of the plurality of broadcast multicast services is a targeted broadcast multicast service.
  • the indicator may be carried in the signaling including the target broadcast multicast service sent by the core network device to the access network device.
  • the identifier list of the broadcast multicast service may include X identifiers.
  • the indicator indicates that the receivers of the X broadcast multicast services identified by the X identifiers include narrowband terminals and broadband terminals.
  • the X broadcast-multicast services may be multiple broadcast-multicast services of a single cell. Or it may be a broadcast-multicast service of multiple cells managed by the above-mentioned access network equipment. Or it may be a broadcast multicast service of multiple cells managed by multiple access network devices associated with the core network device, which is not specifically limited in this application.
  • the access network device sends the MCCH to the narrowband terminal and the broadband terminal.
  • the narrowband terminal and the broadband terminal receive the MCCH from the access network device.
  • the MCCH is used to bear the configuration information of the MTCH of the target broadcast multicast service.
  • the indication information indicates that the recipients of the target broadcast multicast service include narrowband terminals and broadband terminals
  • the MCCH meets one or more of the following restrictions:
  • the first frequency domain resource corresponding to the MCCH does not exceed the maximum bandwidth capability of the narrowband terminal.
  • the first frequency domain resource corresponding to the MCCH may be the maximum bandwidth that the MCCH can occupy.
  • the first frequency domain resource may be a CFR
  • the first frequency domain resource corresponding to the MCCH is the CFR of the MCCH.
  • the CFR of the MCCH can be understood as the maximum bandwidth that the MCCH can occupy.
  • the scheduling bandwidth occupied by the MCCH is the bandwidth actually occupied by the MCCH.
  • the scheduling bandwidth occupied by the MCCH is part or all of the bandwidth of the CFR of the MCCH.
  • the CFR of the MCCH may exceed the maximum bandwidth capability of the narrowband terminal.
  • the method may further include: the access network device determining the above MCCH.
  • the narrowband terminal since the present application restricts the first frequency domain resource corresponding to the MCCH or the occupied scheduling bandwidth to not exceed the maximum bandwidth capability of the narrowband terminal, the narrowband terminal is capable of receiving the MCCH. Therefore, under this restriction, the access network device can send the MCCH once, and both the narrowband terminal and the broadband terminal can receive the MCCH. Compared with the separate transmission of SIBX, MCCH, and MTCH for narrowband terminals and broadband terminals by access network equipment, resource overhead is reduced.
  • one RNTI can be used to scramble the MCCH, that is, the narrowband terminal and the broadband terminal can share one RNTI, which saves RNTI overhead.
  • the MCCH can carry configuration information of multiple MTCHs. It is assumed that the receiver includes narrowband terminals, and broadcast and multicast services in broadband are not included as the first type of service; the receiver includes broadband terminals, and broadcast and multicast services that do not include narrowband terminals are recorded as the second type of service; the receiver includes The broadcast and multicast services of narrowband terminals and broadband terminals are recorded as the third type of services.
  • the multiple MTCHs may have the following four situations:
  • the multiple MTCHs include the MTCH of the second type of service and the MTCH of the third type of service.
  • the multiple MTCHs include the MTCH of the first type of service and the MTCH of the third type of service.
  • the multiple MTCHs include the MTCH of the first type of service, the MTCH of the second type of service, and the MTCH of the third type of service.
  • the multiple MTCHs include MTCHs of the third type of service.
  • the total number of configuration information of the MTCH does not exceed a threshold, which is the upper limit of the number of MTCH configurations carried by the MCCH for broadband terminals or narrowband terminals. That is to say, if the MCCH only carries the configuration information of the MTCH of the first type of service or the configuration information of the MTCH of the second type of service, the upper limit of the number of configurations is X, then the configuration information of the MTCH carried by the MCCH satisfies the above four conditions When one of them is selected, the upper limit of configuration data is also X.
  • the threshold may be determined by the transport block size (transport blocks size, TBS) of the MCCH and the packet size of the configuration information of the MTCH carried by the MCCH.
  • transport block size transport blocks size, TBS
  • the number of MTCH configuration information carried by it cannot be increased infinitely. Based on this solution, the number of MTCH configuration information is limited to meet the TBS limitation of the MCCH.
  • the MTCH configuration information in FIG. 6 is only used to indicate the type of receivers of the broadcast multicast service, and the number of MTCH configuration information is not limited to three.
  • the CFR of the MCCH and the CFR of the MTCH may be the same or different, which is not specifically limited in this application.
  • the CFR of MCCH is the same as the CFR of MTCH#2, and different from the CFR of MTCH#1 and MTCH#3.
  • radio frequency (radio frequency, RF) retuning (retuning) of the terminal can be reduced.
  • the access network device sends the target broadcast multicast service to the narrowband terminal and the broadband terminal on the frequency domain resource corresponding to the MTCH.
  • the narrowband terminal and the broadband terminal receive the target broadcast multicast service from the access network device on the frequency domain resources corresponding to the MTCH.
  • the MTCH is the MTCH of the target broadcast multicast service described in step S503 above.
  • the MTCH is mapped and transmitted on the PDSCH, and the frequency domain resource corresponding to the MTCH is the frequency domain resource on the PDSCH.
  • the narrowband terminal and the broadband terminal can obtain the configuration information of the MTCH of the target broadcast multicast service carried in the MCCH, so that they can receive the target broadcast on the frequency domain resource corresponding to the MTCH according to the configuration information Multicast service.
  • the access network device sends the target broadcast multicast service to the narrowband terminal and the broadband terminal on the frequency domain resources corresponding to the MTCH, which may include: the access network device transmits the target broadcast multicast service to the narrowband terminal and the broadband terminal on the frequency domain resources corresponding to the N MTCHs
  • the broadband terminal sends M target broadcast multicast services, and N and M are positive integers.
  • the values of N and M may be equal to 1.
  • the MCCH can carry a configuration information of the MTCH of the target broadcast multicast service, and the bandwidth of the frequency domain resource corresponding to the MTCH configured by the configuration information does not exceed the maximum bandwidth capability of the narrowband terminal. Based on this, when the access network device sends the target broadcast multicast service on the frequency domain resource corresponding to the MTCH, both the narrowband terminal and the broadband terminal can receive it. That is to say, in this possible implementation, the receiver includes the narrowband terminal and the broadband terminal, and the broadcast multicast service can be sent only once, which further reduces resource overhead.
  • the values of N and M may be equal to 2.
  • the MCCH can carry two pieces of configuration information of the MTCH of the target broadcast multicast service, which are denoted as MTCH configuration information A and MTCH configuration information B.
  • the frequency domain resource corresponding to the MTCH configured by configuration information A is recorded as frequency domain resource A, and the frequency domain resource A does not exceed the maximum bandwidth capability of the narrowband terminal.
  • the frequency domain resource corresponding to the MTCH configured by configuration information B is recorded as frequency domain resource B, and the frequency domain resource B does not exceed the maximum bandwidth capability of the broadband terminal.
  • the access network device sends the target broadcast multicast service to the narrowband terminal on the frequency domain resource A, and the narrowband terminal receives the target broadcast multicast service from the access network device on the frequency domain resource A. And, the access network device sends the target broadcast multicast service to the broadband terminal on the frequency domain resource B, and the broadband terminal receives the target broadcast multicast service from the access network device on the frequency domain resource B.
  • broadcast and multicast services can be sent to narrowband terminals and broadband terminals respectively, improving the flexibility of sending broadcast and multicast services.
  • the values of N and M may not be equal.
  • the value of N is smaller than the value of M, if N is equal to 1 and M is equal to 2, that is, the access network device can send two target broadcast multicast services on frequency domain resources corresponding to one MTCH.
  • the value of N may be greater than the value of M, and the application does not specifically limit the size relationship between N and M.
  • the above solution limits the MCCH so that the MCCH can be sent once, thereby saving resource overhead.
  • the present application also provides another broadcast multicast service sending method, which saves resource overhead by limiting MTCH sending once.
  • FIG. 8 Another method for sending a broadcast multicast service provided by the present application can be applied to the communication system shown in FIG. 3, and the method includes the following steps:
  • the core network device generates indication information.
  • the core network device sends indication information to the access network device.
  • the access network device receives the indication information from the core network device.
  • step S801 and step S802 reference may be made to relevant descriptions in above-mentioned step S501 and step S502, which will not be repeated here.
  • the access network device sends the first MCCH to the narrowband terminal.
  • the narrowband terminal receives the first MCCH from the access network device.
  • the first MCCH is used to bear the first configuration information of the MTCH of the target broadcast multicast service.
  • the frequency domain resource corresponding to the MTCH configured in the first configuration information is the same as the frequency domain resource corresponding to the MTCH configured in the second configuration information.
  • the second configuration information is configuration information of the MTCH used for the target broadcast multicast service of the broadband terminal.
  • the first configuration information and the second configuration information may configure the same carrier for the MTCH of the target broadcast multicast service, so that the frequency domain resources corresponding to the MTCH configured by the two are the same.
  • the CFR or scheduling bandwidth of the first MCCH does not exceed the maximum bandwidth capability of the narrowband terminal.
  • the access network device sends the second MCCH to the broadband terminal.
  • the broadband terminal receives the second MCCH from the access network device.
  • the second MCCH is used to bear the second configuration information of the MTCH of the target broadcast multicast service.
  • the frequency domain resource corresponding to the MTCH configured in the second configuration information is the same as the frequency domain resource corresponding to the MTCH configured in the first configuration information.
  • the first configuration information is configuration information of the MTCH used for the target broadcast multicast service of the narrowband terminal.
  • the CFR or scheduling bandwidth of the second MCCH does not exceed the maximum bandwidth capability of the broadband terminal.
  • the relationship between the CFR of the second MCCH and the maximum bandwidth capability of the narrowband terminal is not limited.
  • the frequency domain resources corresponding to the MTCH of the target broadcast multicast service may include part or all of overlapping resources of the CFR of the MTCH for narrowband terminals and the CFR of the MTCH for broadband terminals.
  • frequency domain resources occupied by the first MCCH and the second MCCH may overlap.
  • the overlapping part in the first MCCH can carry the first configuration information (represented by configuration information A in FIG. 9 ) of the MTCH of the target broadcast multicast service, and the overlapping part in the second MCCH can carry the MTCH of the target broadcast multicast service
  • the second configuration information shown as configuration information B in FIG. 9 ).
  • the non-overlapping part in the first MCCH can carry the configuration information of the MTCH of the first type of service (indicated by configuration information C in Figure 9), and the non-overlapping part in the second MCCH can carry the configuration of the MTCH of the second type of service information (indicated by configuration information D in Figure 9).
  • configuration information C in Figure 9 the configuration information of the MTCH of the first type of service
  • configuration information D in Figure 9 the configuration information D in Figure 9
  • step S803 can be executed first, and then step S804 can be executed; or, step S804 can be executed first, and then step S803 can be executed; or, step S803 and step S804 can be executed simultaneously, without limitation.
  • the access network device sends the target broadcast and multicast service to the narrowband terminal and the broadband terminal on frequency domain resources corresponding to the MTCH of the target broadcast and multicast service.
  • the narrowband terminal and the broadband terminal receive the target broadcast multicast service from the access network device on the frequency domain resources corresponding to the MTCH.
  • the narrowband terminal can obtain the first configuration information of the MTCH of the target broadcast multicast service carried in the first MCCH, so that according to the first configuration information, the frequency domain corresponding to the MTCH can be The target broadcast multicast service is received on the resource.
  • the broadband terminal can acquire the second configuration information of the target broadcast multicast service carried in the second MCCH, so as to receive the target broadcast multicast service on frequency domain resources corresponding to the MTCH according to the second configuration information.
  • the frequency domain resources corresponding to the MTCH configured by the configuration information of the MTCH sent to the narrowband terminal and the configuration information of the MTCH sent to the broadband terminal are the same, so that both the narrowband terminal and the broadband terminal can receive Broadcast and multicast services sent on frequency domain resources, so that for receivers including narrowband terminals and broadband terminals, access network equipment can send broadcast and multicast services once, compared to access network equipment for narrowband terminals and broadband terminals separately
  • the scheme of sending SIBX, MCCH, and MTCH can reduce resource overhead.
  • the first configuration information includes the first G-RNTI
  • the second configuration information includes the second G-RNTI.
  • the first G-RNTI and the second G-RNTI are used to scramble the target broadcast multicast service.
  • the first G-RNTI and the second G-RNTI may be the same.
  • the narrowband terminal and the broadband terminal share one G-RNTI, which can save available G-RNTI resources.
  • the first configuration information may include the first identifier of the target broadcast multicast service corresponding to the first G-RNRI
  • the second configuration information may include the second ID of the target broadcast multicast service corresponding to the second G-RNTI. logo.
  • the first identifier and the second identifier may be the same.
  • the frequency domain resource corresponding to the MTCH of the target broadcast multicast service is scheduled by downlink control information (downlink control information, DCI) carried by the PDCCH.
  • DCI downlink control information
  • the frequency domain resource corresponding to the MTCH of the target broadcast multicast service is scheduled by the first DCI for the narrowband terminal
  • the frequency domain resource corresponding to the MTCH of the target broadcast multicast service is scheduled by the second DCI for the broadband terminal.
  • the first DCI is carried by the first PDCCH, that is, the first PDCCH is used to carry the first DCI.
  • the second DCI is carried by the second PDCCH, that is, the second PDCCH is used to carry the second PDCCH.
  • the candidate frequency domain positions of the first PDCCH and the candidate frequency domain positions of the second PDCCH partially or completely overlap.
  • the multiple candidate frequency domain positions of the second PDCCH may include at least one candidate frequency domain position of the first PDCCH.
  • the CCEs corresponding to the first PDCCH and the second PDCCH are transferred to the resource element group (resource element group, REG ) can be mapped in a non-interleaved manner.
  • the non-interleaving mode may be configured through parameters in a control resource set (CORESET).
  • the first DCI and the second DCI can occupy the overlapping candidate frequency domain positions, that is, to schedule target broadcasting for narrowband terminals
  • the DCI of the frequency domain resource corresponding to the MTCH of the multicast service may occupy the same frequency domain position as the DCI of the frequency domain resource corresponding to the MTCH of the broadband terminal scheduling target broadcast multicast service, thereby saving frequency domain resource overhead.
  • the candidate time domain position of the first PDCCH and the candidate time domain position of the second PDCCH partially or completely overlap.
  • the overlapping part of the candidate time domain position of the first PDCCH and the candidate time domain position of the second PDCCH includes at least two consecutive symbols in one time slot.
  • the listening time slot can be configured through the listening period, duration and offset parameters of the search space (search space), so that there are at least an overlapping time slot.
  • the monitoring time slots of the first PDCCH include time slot 0 , time slot 1 , time slot 3 , time slot 4 , time slot 6 , time slot 7 and time slot 9 .
  • the monitoring slots of the second PDCCH include slot 1, slot 2, slot 5, slot 6, and slot 9.
  • the overlapping slots include slot 1, slot 6, and slot 9.
  • the monitoring mode in a single time slot can be configured through the monitoring mode of symbols in a time slot of the search space and the duration of the CORESET, so that at least two consecutive symbols overlap in overlapping time slots.
  • the monitoring symbols of the first PDCCH in slot 1 include symbol 0, symbol 1, symbol 4, symbol 5, symbol 8, symbol 9, symbol 12, and symbol 13.
  • the monitoring symbols of the second PDCCH in slot 1 include symbol 0, symbol 1, symbol 2, symbol 5, symbol 6, symbol 7, symbol 10, symbol 11, and symbol 12. Two consecutive overlapping symbols are symbol 0 and symbol 1.
  • the first DCI and the second DCI can occupy the overlapped candidate time domain positions, that is, to schedule target broadcasting for narrowband terminals
  • the DCI of the frequency domain resource corresponding to the MTCH of the multicast service may occupy the same time domain position as the DCI of the frequency domain resource corresponding to the MTCH of the broadband terminal scheduling target broadcast multicast service, thereby saving time domain resource overhead.
  • the first DCI and the second DCI respectively schedule the same frequency domain resource for the narrowband terminal and the broadband terminal, so that the first DCI and the second DCI may be the same.
  • the access network device may send the first DCI (or the second DCI) to the narrowband terminal and the broadband terminal on the first time-frequency resource.
  • the narrowband terminal and the broadband terminal receive the first DCI (or the second DCI) from the access network device on the first time-frequency resource.
  • the frequency domain position of the first time-frequency resource is located in the overlapping part of the candidate frequency domain position of the first PDCCH and the candidate frequency domain position of the second PDCCH.
  • the time domain position of the first time-frequency resource is located in the overlapping part of the candidate time domain position of the first PDCCH and the candidate time domain position of the second PDCCH.
  • the access network device can send a DCI for scheduling frequency domain resources corresponding to MTCH to narrowband terminals and broadband terminals on the same time-frequency resource, that is, a DCI for scheduling frequency domain resources corresponding to MTCH for narrowband terminals and broadband terminals
  • the DCI is the same DCI, and there is no need to send different DCIs for the narrowband terminal and the broadband terminal on different time-frequency resources, thereby reducing the overhead of scheduling resources.
  • the methods and/or steps implemented by the core network equipment may also be implemented by components (such as processors, chips, chip systems, circuits, logic modules, or implemented by software); the method and/or steps implemented by the access network equipment may also be implemented by components (such as processors, chips, chip systems, circuits, logic modules, or software) that can be used for the access network equipment; by The methods and/or steps implemented by the terminal may also be implemented by components (such as processors, chips, chip systems, circuits, logic modules, or software) that can be used in the terminal.
  • the present application also provides a communication device, which is used to implement the above various methods.
  • the communication device may be the access network device in the above method embodiment, or a component that can be used in the access network device; or, the communication device may be the terminal (narrowband terminal or broadband terminal) in the above method embodiment, or It is a component that can be used in the terminal; or, the communication device can be the core network equipment in the above method embodiment, or a component that can be used in the core network equipment.
  • the communication device includes hardware structures and/or software modules corresponding to each function.
  • the present application can be implemented in the form of hardware or a combination of hardware and computer software in combination with the units and algorithm steps of each example described in the embodiments disclosed herein. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.
  • the embodiments of the present application may divide the communication device into functional modules according to the above method embodiments.
  • each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module.
  • the above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. It should be noted that the division of modules in the embodiment of the present application is schematic, and is only a logical function division, and there may be other division methods in actual implementation.
  • FIG. 12 shows a schematic structural diagram of an access network device 120 .
  • the access network device 120 includes a receiving module 1201 and a sending module 1202 .
  • the access network device 120 may further include a processing module 1203 . Further, a storage module (not shown in FIG. 12 ) may also be included for storing program instructions and data.
  • the receiving module 1201 and the sending module 1202 may be collectively referred to as a transceiver module.
  • the receiving module 1201 may be composed of a receiving circuit, a receiver, a receiver, or an input interface.
  • the sending module 1202 may be composed of a sending circuit, a transmitter, a transmitter, or an output interface.
  • the receiving module 1201 and the sending module 1202 can be used to respectively perform the receiving and sending steps performed by the access network device in the above method embodiments, and/or to support the technology described herein Other processes; the processing module 1203 may be used to execute steps of the processing type (such as determining, etc.) performed by the access network device in the above method embodiments, and/or other processes used to support the technology described herein.
  • the receiving module 1201 is used to receive indication information from the core network equipment, and the indication information indicates that the recipients of the target broadcast multicast service include narrowband terminals and broadband terminals; the sending module 1202 is used to send MCCH to narrowband terminals and broadband terminals, and the MCCH uses According to the configuration information of the MTCH carrying the target broadcast multicast service, the first frequency domain resource corresponding to the MCCH or the occupied scheduling bandwidth does not exceed the maximum bandwidth capability of the narrowband terminal; Send target broadcast and multicast services to narrowband terminals and broadband terminals.
  • the sending module 1202 is configured to send the target broadcast multicast service to the narrowband terminal and the broadband terminal on the frequency domain resource corresponding to the MTCH, including: the sending module 1202 is used to send the target broadcast multicast service to the The narrowband terminal and the broadband terminal send M target broadcast multicast services, where N and M are positive integers.
  • the processing module 1203 is configured to generate the MCCH.
  • the receiving module 1201 is used to receive indication information from the core network equipment, and the indication information indicates that the receiver of the target broadcast multicast service includes a narrowband terminal and a broadband terminal; a sending module 1202 is used to send the first MCCH to the narrowband terminal, and send the The terminal sends a second MCCH, the first MCCH is used to carry the first configuration information of the MTCH of the target broadcast multicast service, and the second MCCH is used to carry the second configuration information of the MTCH; the frequency domain resource corresponding to the MTCH configured by the first configuration information The frequency domain resource corresponding to the MTCH configured in the second configuration information is the same; the sending module 1202 is further configured to send the target broadcast multicast service to the narrowband terminal and the broadband terminal on the frequency domain resource corresponding to the MTCH.
  • the sending module 1202 is further configured to send the first DCI to the narrowband terminal and the broadband terminal on the first time-frequency resource, where the frequency domain position of the first time-frequency resource is located between the candidate frequency domain position of the first PDCCH and the second In the overlapping part of the candidate frequency domain positions of the PDCCH, the time domain position of the first time-frequency resource is located in the overlapping part of the candidate time domain positions of the first PDCCH and the candidate time domain positions of the second PDCCH.
  • the access network device 120 is presented in the form of dividing various functional modules in an integrated manner.
  • Module here may refer to a specific application-specific integrated circuit (ASIC), circuit, processor and memory that execute one or more software or firmware programs, integrated logic circuits, and/or other functions that can provide the above functions device.
  • ASIC application-specific integrated circuit
  • the access network device 120 may take the form of the communication device 400 shown in FIG. 4 .
  • the function/implementation process of the processing module 1203 in FIG. 12 can be implemented by the processor 401 in the communication device 400 shown in FIG.
  • the functions/implementation process of 1201 and the sending module 1202 can be implemented through the communication interface 404 in the communication device 400 shown in FIG. 4 .
  • the functions/implementation process of the receiving module 1201 and the sending module 1202 can be implemented through the input and output interfaces (or communication interfaces) of the chip or the chip system
  • the function/implementation process of the processing module 1203 may be implemented by a chip or a processor (or processing circuit) of a chip system.
  • the access network device 120 provided in this embodiment can execute the above method, the technical effect it can obtain can refer to the above method embodiment, which will not be repeated here.
  • FIG. 13 shows a schematic structural diagram of a narrowband terminal 130 .
  • the narrowband terminal 130 includes a receiving module 1301 .
  • the narrowband terminal 130 may further include a processing module 1302 . Further, it may also include a storage module and a sending module (not shown in FIG. 13 ), the storage module is used to store program instructions and data, and the sending module is used to implement sending-like steps.
  • the receiving module 1301 may be composed of a receiving circuit, a receiver, a receiver, or an input interface.
  • the receiving module 1301 can be used to perform the steps of the receiving class performed by the narrowband terminal in the above method embodiments, and/or other processes used to support the technology described herein; the processing module 1302 can be used Steps of the processing type (such as determination, etc.) performed by the narrowband terminal in the above method embodiments, and/or other processes used to support the technology described herein.
  • the receiving module 1301 is configured to receive the MCCH from the access network device, the MCCH is used to carry the configuration information of the MTCH of the target broadcast multicast service, and the first frequency domain resource corresponding to the MCCH or the occupied scheduling bandwidth does not exceed the maximum bandwidth of the narrowband terminal Capability; the receiving module 1301 is also configured to receive the target broadcast multicast service from the access network device on the frequency domain resources corresponding to the MTCH.
  • the receiving module 1301 is configured to receive the first MCCH from the access network device, the first MCCH is used to carry the first configuration information of the MTCH of the target broadcast multicast service; the frequency domain resource corresponding to the MTCH configured by the first configuration information and the first MCCH The frequency domain resources corresponding to the MTCH configured by the second configuration information are the same, and the second configuration information is the configuration information of the MTCH used for broadband terminals; the receiving module 1301 is also used to receive information from the access network device on the frequency domain resources corresponding to the MTCH Target broadcast multicast service.
  • the receiving module 1301 is further configured to receive the first DCI from the access network device on the first time-frequency resource, where the frequency domain position of the first time-frequency resource is located between the candidate frequency domain position of the first PDCCH and the second In the overlapping part of the candidate frequency domain positions of the PDCCH, the time domain position of the first time-frequency resource is located in the overlapping part of the candidate time domain positions of the first PDCCH and the candidate time domain positions of the second PDCCH.
  • the narrowband terminal 130 is presented in the form of dividing various functional modules in an integrated manner.
  • Module here may refer to a specific application-specific integrated circuit (ASIC), circuit, processor and memory that execute one or more software or firmware programs, integrated logic circuits, and/or other functions that can provide the above functions device.
  • ASIC application-specific integrated circuit
  • the narrowband terminal 130 may take the form of the communication device 400 shown in FIG. 4 .
  • the function/implementation process of the processing module 1302 in FIG. 13 can be realized by the processor 401 in the communication device 400 shown in FIG.
  • the function/implementation process of 1301 and the sending module can be implemented through the communication interface 404 in the communication device 400 shown in FIG. 4 .
  • the functions/implementation process of the receiving module 1301 and the sending module can be realized through the input and output interface (or communication interface) of the chip or the chip system, and the processing
  • the function/implementation process of the module 1302 may be implemented by a chip or a processor (or processing circuit) of a chip system.
  • the narrowband terminal 130 provided in this embodiment can execute the above method, the technical effect it can obtain can refer to the above method embodiment, which will not be repeated here.
  • FIG. 14 shows a schematic structural diagram of a broadband terminal 140 .
  • the broadband terminal 140 includes a receiving module 1401 .
  • the broadband terminal 140 may further include a processing module 1402 . Further, it may also include a storage module and a sending module (not shown in FIG. 14 ), the storage module is used to store program instructions and data, and the sending module is used to implement sending-like steps.
  • the receiving module 1401 may be composed of a receiving circuit, a receiver, a receiver, or an input interface.
  • the receiving module 1401 can be used to execute the steps of the receiving type performed by the broadband terminal in the above method embodiments, and/or other processes supporting the technology described herein; the processing module 1402 can be used to Steps of the processing type (such as determination, etc.) performed by the broadband terminal in the above method embodiments, and/or other processes used to support the technology described herein.
  • the receiving module 1401 is configured to receive the MCCH from the access network device, the MCCH is used to carry the configuration information of the MTCH of the target broadcast multicast service, and the first frequency domain resource corresponding to the MCCH or the occupied scheduling bandwidth does not exceed the maximum bandwidth of the broadband terminal Capability; the receiving module 1401 is also configured to receive the target broadcast multicast service from the access network device on the frequency domain resources corresponding to the MTCH.
  • the receiving module 1401 is configured to receive a second MCCH from an access network device, the second MCCH is used to carry second configuration information of an MTCH of a target broadcast multicast service; the frequency domain resources corresponding to the MTCH configured by the second configuration information and the second The frequency domain resources corresponding to the MTCH configured by the first configuration information are the same, and the first configuration information is the configuration information of the MTCH used for narrowband terminals; the receiving module 1401 is also used to receive information from the access network device on the frequency domain resources corresponding to the MTCH Target broadcast multicast service.
  • the receiving module 1401 is further configured to receive the first DCI from the access network device on the first time-frequency resource, where the frequency domain position of the first time-frequency resource is located between the candidate frequency domain position of the first PDCCH and the second In the overlapping part of the candidate frequency domain positions of the PDCCH, the time domain position of the first time-frequency resource is located in the overlapping part of the candidate time domain positions of the first PDCCH and the candidate time domain positions of the second PDCCH.
  • the broadband terminal 140 is presented in the form of dividing various functional modules in an integrated manner.
  • Module here may refer to a specific application-specific integrated circuit (ASIC), circuit, processor and memory that execute one or more software or firmware programs, integrated logic circuits, and/or other functions that can provide the above functions device.
  • ASIC application-specific integrated circuit
  • the broadband terminal 140 may take the form of the communication device 400 shown in FIG. 4 .
  • the function/implementation process of the processing module 1402 in FIG. 14 can be realized by the processor 401 in the communication device 400 shown in FIG. 1401 and the function/implementation process of the sending module can be implemented through the communication interface 404 in the communication device 400 shown in FIG. 4 .
  • the functions/implementation process of the receiving module 1401 and the sending module can be realized through the input and output interface (or communication interface) of the chip or the chip system, and the processing The function/implementation process of the module 1402 may be implemented by a chip or a processor (or processing circuit) of a chip system.
  • the broadband terminal 140 provided in this embodiment can execute the above method, the technical effect it can obtain can refer to the above method embodiment, and details are not repeated here.
  • FIG. 15 shows a schematic structural diagram of a core network device 150 .
  • the core network device 150 includes a processing module 1501 and a transceiver module 1502 .
  • the core network device 150 may further include a storage module (not shown in FIG. 15 ) for storing program instructions and data.
  • the transceiver module 1502 may also be called a transceiver unit. It can be composed of a transceiver circuit, a transceiver, a transceiver, or a communication interface.
  • the transceiver module 1502 may include a receiving module and a sending module, which may be used to respectively perform the receiving and sending steps performed by the core network device in the above method embodiments, and/or to support the steps described herein.
  • the processing module 1501 may be used to execute steps of the processing type (such as generation, etc.) performed by the core network device in the above method embodiments, and/or other processes used to support the technology described herein.
  • the processing module 1501 is configured to generate indication information, where the indication information indicates that receivers of the target broadcast multicast service include narrowband terminals and broadband terminals.
  • the transceiver module 1502 is configured to send the indication information to the access network device.
  • the core network device 150 may take the form of the communication device 400 shown in FIG. 4 .
  • the function/implementation process of the processing module 1501 in FIG. 15 can be realized by the processor 401 in the communication device 400 shown in FIG.
  • the function/implementation process of 1502 may be implemented through the communication interface 404 in the communication device 400 shown in FIG. 4 .
  • the function/implementation process of the transceiver module 1502 can be realized through the input and output interface (or communication interface) of the chip or the chip system, and the processing module 1501
  • the function/implementation process of may be realized by a processor (or processing circuit) of a chip or a chip system.
  • the core network device 150 provided in this embodiment can execute the above method, the technical effect it can obtain can refer to the above method embodiment, and details are not repeated here.
  • the embodiments of the present application further provide a communication device, where the communication device includes a processor, configured to implement the method in any one of the foregoing method embodiments.
  • the communication device further includes a memory.
  • the memory is used to store necessary program instructions and data, and the processor can call the program code stored in the memory to instruct the communication device to execute the method in any one of the above method embodiments.
  • the memory may not be in the communication device.
  • the communication device further includes an interface circuit, the interface circuit is a code/data read and write interface circuit, and the interface circuit is used to receive computer-executed instructions (computer-executed instructions are stored in the memory, and may be directly read from memory read, or possibly through other devices) and transferred to the processor.
  • the interface circuit is a code/data read and write interface circuit, and the interface circuit is used to receive computer-executed instructions (computer-executed instructions are stored in the memory, and may be directly read from memory read, or possibly through other devices) and transferred to the processor.
  • the communication device further includes a communication interface, where the communication interface is used to communicate with modules other than the communication device.
  • the communication device may be a chip or a system-on-a-chip.
  • the communication device may consist of a chip, or may include a chip and other discrete devices, which is not specifically limited in this embodiment of the present application.
  • the present application also provides a computer-readable storage medium, on which a computer program or instruction is stored, and when the computer program or instruction is executed by a computer, the functions of any one of the above method embodiments are realized.
  • the present application also provides a computer program product, which implements the functions of any one of the above method embodiments when executed by a computer.
  • the systems, devices and methods described in this application can also be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components can be combined or May be integrated into another system, or some features may be ignored, or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, that is, they may be located in one place, or may be distributed to multiple network units. Components shown as units may or may not be physical units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.
  • all or part of them may be implemented by software, hardware, firmware or any combination thereof.
  • a software program it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website, computer, server, or data center Transmission to another website site, computer, server or data center by wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.).
  • the computer-readable storage medium may be any available medium that can be accessed by a computer, or may be a data storage device including one or more servers, data centers, etc. that can be integrated with the medium.
  • the available medium may be a magnetic medium (such as a floppy disk, a hard disk, or a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (solid state disk, SSD)), etc.
  • the computer may include the aforementioned apparatus.

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Abstract

本申请提供一种广播多播业务的发送方法、装置及系统，在广播多播业务的接收方包括窄带终端和宽带终端的情况下，能够合理地配置并发送该广播多播业务，尽可能降低资源开销。该方法包括：接入网设备接收来自核心网设备的指示信息，获知目标广播多播业务的接收方包括窄带终端和宽带终端，向窄带终端和宽带终端发送MCCH，并在目标广播多播业务的MTCH对应的频域资源上向窄带终端和宽带终端发送广播多播业务。该MTCH的配置信息承载于MCCH中。相应的，窄带终端和宽带终端接收MCCH后，在MTCH对应的频域资源上接收目标广播多播业务。其中，MCCH对应的第一频域资源或占用的调度带宽不超过窄带终端的最大带宽能力。

Description

广播多播业务的发送方法、装置及系统
本申请要求于2021年12月07日提交国家知识产权局、申请号为202111488565.5、申请名称为“广播多播业务的发送方法、装置及系统”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
本申请实施例涉及通信领域，尤其涉及广播多播业务的发送方法、装置及系统。
背景技术
第五代(5th generation，5G)移动通信技术的应用场景主要包括：增强型移动宽带(enhanced mobile broadband，eMBB)、超高可靠低时延通信(ultra reliability low latency communication，URLLC)、海量机器类通信(massive machine type communication，mMTC)。
eMBB场景下，宽带终端被引入。mMTC场景下，窄带终端被引入。相比于宽带终端，窄带终端具有较低的带宽能力。
随着窄带终端规模的扩大，窄带终端对于广播多播服务(multicast broadcast service，MBS)的需求也进一步扩大。例如，以窄带终端为可穿戴业务下的智能手表为例，在智能手表的生命周期内可能会多次进行系统固件升级，其中固件升级所需的升级包等可能由服务器以广播或多播的形式发送。或者，智能手表可能需要接收地震、海啸等自然灾害预警消息，该自然灾害预警消息通常以广播或多播的形式发送。
随着窄带终端对广播多播服务需求的扩大，可能存在窄带终端和宽带终端需要接收同一广播多播业务的场景。该场景下，如何配置和发送该广播多播业务是目前亟待解决的问题。
发明内容
本申请提供一种广播多播业务的发送方法、装置及系统，在广播多播业务的接收方包括窄带终端和宽带终端的情况下，能够合理地配置并发送该广播多播业务，降低资源开销。
第一方面，提供了一种广播多播业务的发送方法，该方法可以由接入网设备执行，也可以由接入网设备的部件，例如接入网设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分接入网设备功能的逻辑模块或软件实现。该方法包括：
接收来自核心网设备的指示信息，该指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端。向窄带终端和宽带终端发送组播控制逻辑信道MCCH，以及在目标广播多播业务的广播业务逻辑信道MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务。其中，该MCCH用于承载目标广播多播业务的MTCH的配置信息。MCCH对应的第一频域资源或占用的调度带宽不超过窄带终端的最大带宽能力。
基于该方案，限制了MCCH对应的第一频域资源或占用的调度带宽不超过窄带终端的最大带宽能力，因此窄带终端有能力接收该MCCH，从而接入网设备可以发送一次MCCH，窄带终端和宽带终端均能收到该MCCH。相比于接入网设备分别针对窄带终端和宽带终端单独发送SIBX、MCCH、和MTCH，降低了资源开销。
结合第一方面，在第一方面的一种可能的实施方式中，MCCH对应的第一频域资源为MCCH能够占用的最大带宽。
结合第一方面，在第一方面的一种可能的实施方式中，第一频域资源为公共频域资源 CFR。
结合第一方面，在第一方面的一种可能的实施方式中，指示信息包括至少一个指示符。该至少一个指示符和至少一个广播多播业务的标识存在对应关系，至少一个广播多播业务包括目标广播多播业务。
基于该可能的实施方式，可以设计一个指示符对应一个广播多播业务的标识，即采用以业务为粒度的指示符，能够更灵活的指示各个业务各自对应的接收方的类型，实现不同业务对应不同接收方类型的指示。或者，可以设计一个指示符对应多个广播多播业务的标识，即用一个指示符指示多个广播多播业务的接收方的类型，可以节省指示信息的信令开销。此外，由于接入网设备向窄带终端和宽带终端发送一次MCCH，从而可以使用一个RNTI对该MCCH进行加扰，即窄带终端和宽带终端可以共用一个RNTI，节省了RNTI的开销。
结合第一方面，在第一方面的一种可能的实施方式中，MCCH承载的MTCH的配置信息的总数不超过阈值，该阈值为MCCH承载宽带终端或窄带终端的MTCH的配置数目上限。
由于MCCH的TBS有限，其承载的MTCH的配置信息的数目不能无限增加，基于该可能的实施方式，限制了MTCH的配置信息的数目，满足MCCH的TBS限制。
结合第一方面，在第一方面的一种可能的实施方式中，在MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务，包括：在N个MTCH对应的频域资源上向窄带终端和宽带终端发送M个目标广播多播业务，N和M为正整数。
基于该可能的实施方式，接入网设备可以分别向窄带终端和宽带终端发送广播多播业务，提高广播多播业务发送的灵活性。
结合第一方面，在第一方面的一种可能的实施方式中，在向窄带终端和宽带终端发送MCCH之前，该方法还包括：确定MCCH。
第二方面，提供了一种广播多播业务的接收方法，该方法可以由终端执行，也可以由终端的部件，例如终端的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分终端功能的逻辑模块或软件实现。终端为窄带终端或宽带终端。该方法包括：
接收来自接入网设备的组播控制逻辑信道MCCH，在目标广播多播业务的广播业务逻辑信道MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。其中，MCCH用于承载目标广播多播业务的MTCH的配置信息。其中，MCCH对应的第一频域资源或占用的调度带宽不超过窄带终端的最大带宽能力。
结合第二方面，在第二方面的一种可能的实施方式中，MCCH对应的第一频域资源为MCCH能够占用的最大带宽。
结合第二方面，在第一方面的一种可能的实施方式中，第一频域资源为公共频域资源CFR。
结合第二方面，在第一方面的一种可能的实施方式中，MCCH承载的MTCH的配置信息的总数不超过阈值，阈值为MCCH承载用于宽带终端或窄带终端的MTCH的配置时，用于宽带终端或窄带终端的MTCH的配置数目上限。
其中，第二方面或其任意可能的实施方式所带来的技术效果可参考第一方面或对应的实施方式所带来的技术效果，在此不再赘述。
第三方面，提供了一种广播多播业务的发送方法，该方法可以由接入网设备执行，也可以由接入网设备的部件，例如接入网设备的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分接入网设备功能的逻辑模块或软件实现。该方法包括：接收来自核心网设备的指示信息，指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端；
向窄带终端发送第一组播控制逻辑信道MCCH，以及向宽带终端发送第二MCCH。在目标广播多播业务的广播业务逻辑信道MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务。其中，第一MCCH用于承载目标广播多播业务的MTCH的第一配置信息，第二MCCH用于承载目标广播多播业务的MTCH的第二配置信息。第一配置信息配置的MTCH对应的频域资源和第二配置信息配置的MTCH对应的频域资源相同。
基于该方案，发送至窄带终端的MTCH的配置信息和发送至宽带终端的MTCH的配置信息配置的该MTCH对应的频域资源相同，使得窄带终端和宽带终端均可以收到接入网设备在该频域资源上发送的广播多播业务，从而对于接收方包括窄带终端和宽带终端的广播多播业务，接入网设备可以发送一次，相比于接入网设备分别针对窄带终端和宽带终端单独发送SIBX、MCCH、和MTCH的方案，能够降低资源开销。
结合第三方面，在第三方面的一种可能的实施方式中，指示信息包括至少一个指示符，至少一个指示符和至少一个广播多播业务的标识存在对应关系，至少一个广播多播业务包括目标广播多播业务。
结合第三方面，在第三方面的一种可能的实施方式中，第一配置信息包括第一组无线网络临时标识G-RNTI，第二配置信息包括第二G-RNTI，第一G-RNTI和第二G-RNTI相同，第一G-RNTI和第二G-RNTI用于加扰目标广播多播业务。
基于该可能的实施方式，在同一频域资源上向窄带终端和宽带终端发送同一广播多播业务时，使得窄带终端和宽带终端共用一个G-RNTI，可以节省可用的G-RNTI资源。
结合第三方面，在第三方面的一种可能的实施方式中，第一配置信息包括目标广播多播业务的第一标识，第二配置信息包括目标广播多播业务的第二标识，第一标识和第二标识相同。
结合第三方面，在第三方面的一种可能的实施方式中，第一物理下行控制信道PDCCH的候选频域位置和第二PDCCH的候选频域位置部分或全部重叠。其中，第一PDCCH用于承载第一下行控制信息DCI，第一DCI用于为窄带终端调度MTCH对应的频域资源；第二PDCCH用于承载第二DCI，第二DCI用于为宽带终端调度MTCH对应的频域资源。
基于该可能的实施方式，第二PDCCH的候选频域位置和第一PDCCH的候选频域位置部分或全部重叠时，第一DCI和第二DCI可以占用重叠的候选频域位置，即为窄带终端调度目标广播多播业务的MTCH对应的频域资源的DCI，和为宽带终端调度目标广播多播业务的MTCH对应的频域资源的DCI占用的频域位置可以相同，从而可以节省频域资源开销。
结合第三方面，在第三方面的一种可能的实施方式中，第一PDCCH的候选时域位置和第二PDCCH的候选时域位置部分或全部重叠。
基于该可能的实施方式，第二PDCCH的候选时域位置和第一PDCCH的候选时域位置部分或全部重叠时，第一DCI和第二DCI可以占用重叠的候选时域位置，即为窄带终端调度目标广播多播业务的MTCH对应的频域资源的DCI，和为宽带终端调度目标广播多播业务的MTCH对应的频域资源的DCI占用的时域位置可以相同，从而可以节省时域资源开销。
结合第三方面，在第三方面的一种可能的实施方式中，第一DCI和第二DCI相同；该方法还包括：在第一时频资源上向窄带终端和宽带终端发送第一DCI，第一时频资源的频域位置位于第一PDCCH的候选频域位置和第二PDCCH的候选频域位置的重叠部分，第一时频资源的时域位置位于第一PDCCH的候选时域位置和第二PDCCH的候选时域位置的重叠部分。
基于该可能的实施方式，接入网设备可以在相同的时频资源上向窄带终端和宽带终端发 送一个调度MTCH对应的频域资源的DCI，即为窄带终端和为宽带终端调度MTCH对应的频域资源的DCI为同一DCI，无需在不同的时频资源上分别为窄带终端和宽带终端发送不同的DCI，从而可以降低调度资源的开销。
第四方面，提供了一种广播多播业务的接收方法，该方法可以由窄带终端执行，也可以由窄带终端的部件，例如窄带终端的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分窄带终端功能的逻辑模块或软件实现。该方法包括：
接收来自接入网设备的第一组播控制逻辑信道MCCH，在目标广播多播业务的广播业务逻辑信道MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。其中，第一MCCH用于承载目标广播多播业务的MTCH的第一配置信息。第一配置信息配置的该MTCH对应的频域资源和第二配置信息配置的该MTCH对应的频域资源相同，第二配置信息为用于宽带终端的MTCH的配置信息。
第五方面，提供了一种广播多播业务的接收方法，该方法可以由宽带终端执行，也可以由宽带终端的部件，例如宽带终端的处理器、芯片、或芯片系统等执行，还可以由能实现全部或部分宽带终端功能的逻辑模块或软件实现。该方法包括：
接收来自接入网设备的第二组播控制逻辑信道MCCH，在目标广播多播业务的广播业务逻辑信道MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。其中，第二MCCH用于承载目标广播多播业务的MTCH的第二配置信息。第二配置信息配置的该MTCH对应的频域资源和第一配置信息配置的该MTCH对应的频域资源相同，第一配置信息为用于窄带终端的MTCH的配置信息。
结合第四方面或第五方面，在第四方面或第五方面的一种可能的实施方式中，第一配置信息包括第一组无线网络临时标识G-RNTI，第二配置信息包括第二G-RNTI，第一G-RNTI和第二G-RNTI相同，第一G-RNTI和第二G-RNTI用于加扰目标广播多播业务。
结合第四方面或第五方面，在第四方面或第五方面的一种可能的实施方式中，第一配置信息包括目标广播多播业务的第一标识，第二配置信息包括目标广播多播业务的第二标识，第一标识和第二标识相同。
结合第四方面或第五方面，在第四方面或第五方面的一种可能的实施方式中，第一物理下行控制信道PDCCH的候选频域位置和第二PDCCH的候选频域位置部分或全部重叠。其中，第一PDCCH用于承载第一下行控制信息DCI，第一DCI用于为窄带终端调度MTCH对应的频域资源；第二PDCCH用于承载第二DCI，第二DCI用于为宽带终端调度MTCH对应的频域资源。
结合第四方面或第五方面，在第四方面或第五方面的一种可能的实施方式中，第一PDCCH的候选时域位置和第二PDCCH的候选时域位置部分或全部重叠。
结合第四方面或第五方面，在第四方面或第五方面的一种可能的实施方式中，第一DCI和第二DCI相同。该方法还包括：在第一时频资源上向接收来自接入网设备的第一DCI，第一时频资源的频域位置位于第一PDCCH的候选频域位置和第二PDCCH的候选频域位置的重叠部分，第一时频资源的时域位置位于第一PDCCH的候选时域位置和第二PDCCH的候选时域位置的重叠部分。
其中，第四方面、第五方面或其任意可能的实施方式所带来的技术效果可参考第三方面或对应的实施方式所带来的技术效果，在此不再赘述。
第六方面，提供了一种广播多播业务的发送方法，该方法可以由核心网设备执行，也可以由核心网设备的部件，例如核心网设备的处理器、芯片、或芯片系统等执行，还可以由能 实现全部或部分核心网设备功能的逻辑模块或软件实现。该方法包括：生成指示信息，并向接入网设备发送该指示信息。其中，该指示信息用于指示目标广播多播业务的接收方包括窄带终端和宽带终端。
结合第六方面，在第六方面的一种可能的实施方式中，指示信息包括至少一个指示符。该至少一个指示符和至少一个广播多播业务的标识存在对应关系，至少一个广播多播业务包括目标广播多播业务。
第七方面，提供了一种通信装置用于实现上述各种方法。该通信装置可以为上述第一方面或第三方面中的接入网设备，或者上述接入网设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第五方面中的终端，或者上述终端中包含的装置，比如芯片；或者，该通信装置可以为上述第六方面中的核心网设备，或者上述核心网设备中包含的装置，比如芯片。所述通信装置包括实现上述方法相应的模块、单元、或手段(means)，该模块、单元、或means可以通过硬件实现，软件实现，或者通过硬件执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
在一种可能的设计中，该通信装置可以包括接收模块和发送模块，分别用以实现上述任一方面及其任一可能的实施方式中的接收功能和发送功能。接收模块可以由接收电路、接收机、接收器或输入接口构成。发送模块可以由发送电路、发送机、发送器或输出接口构成。
在一种可能的设计中，该通信装置还可以包括处理模块。该处理模块，可以用于实现上述任一方面及其任意可能的实现方式中的处理功能。
第八方面，提供了一种通信装置，包括：处理器和存储器；该存储器用于存储计算机指令，当该处理器执行该指令时，以使该通信装置执行上述任一方面所述的方法。该通信装置可以为上述第一方面或第三方面中的接入网设备，或者上述接入网设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第五方面中的终端，或者上述终端中包含的装置，比如芯片；或者，该通信装置可以为上述第六方面中的核心网设备，或者上述核心网设备中包含的装置，比如芯片。
第九方面，提供一种通信装置，包括：处理器和通信接口；该通信接口，用于与该通信装置之外的模块通信；所述处理器用于执行计算机程序或指令，以使该通信装置执行上述任一方面所述的方法。该通信装置可以为上述第一方面或第三方面中的接入网设备，或者上述接入网设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第五方面中的终端，或者上述终端中包含的装置，比如芯片；或者，该通信装置可以为上述第六方面中的核心网设备，或者上述核心网设备中包含的装置，比如芯片。
第十方面，提供一种通信装置，包括：逻辑电路和接口电路；该接口电路，用于获取待处理的信息和/或输出处理后的信息；该逻辑电路用于执行上述任一方面所述的方法，对所述待处理的信息进行处理和/或生成所述处理后的信息。该通信装置可以为上述第一方面或第三方面中的接入网设备，或者上述接入网设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第五方面中的终端，或者上述终端中包含的装置，比如芯片；或者，该通信装置可以为上述第六方面中的核心网设备，或者上述核心网设备中包含的装置，比如芯片。
第十一方面，提供了一种通信装置，包括：接口电路和处理器，该接口电路为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可能经过其他器件)并传输至该处理器；处理器用于执行计算机执行指令以使该通信装置执行上述任一方面所述的方法。该通信装置可以为上述第一方面或第 三方面中的接入网设备，或者上述接入网设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第五方面中的终端，或者上述终端中包含的装置，比如芯片；或者，该通信装置可以为上述第六方面中的核心网设备，或者上述核心网设备中包含的装置，比如芯片。
第十二方面，提供了一种通信装置，包括：至少一个处理器；所述处理器用于执行计算机程序或指令，以使该通信装置执行上述任一方面所述的方法。该通信装置可以为上述第一方面或第三方面中的接入网设备，或者上述接入网设备中包含的装置，比如芯片；或者，该通信装置可以为上述第二方面或第四方面或第五方面中的终端，或者上述终端中包含的装置，比如芯片；或者，该通信装置可以为上述第六方面中的核心网设备，或者上述核心网设备中包含的装置，比如芯片。
在一种可能的设计中，该通信装置包括存储器，该存储器，用于保存必要的程序指令和数据。该存储器可以与处理器耦合，或者，也可以独立于该处理器。
在一种可能的设计中，该通信装置可以是芯片或芯片系统。该装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件。
第十三方面，提供了一种计算机可读存储介质，该计算机可读存储介质中存储有指令，当其在通信装置上运行时，使得上述任一方面所述的方法被实现。
第十四方面，提供了一种包含指令的计算机程序产品，当其在通信装置上运行时，使得上述任一方面所述的方法被实现。
可以理解的是，第七方面至第十二方面中任一方面提供的通信装置是芯片时，上述的发送动作/功能可以理解为输出信息，上述的接收动作/功能可以理解为输入信息。
其中，第七方面至第十四方面中任一种设计方式所带来的技术效果可参见上述第一方面至第六方面中不同设计方式所带来的技术效果，在此不再赘述。
第十五方面，提供一种通信系统，该通信系统包括上述方面所述的接入网设备、窄带终端、和宽带终端。
结合第十五方面，在一种可能的设计中，该通信系统还可以包括上述方面所述的核心网设备。
附图说明
图1为本申请提供的一种广播机制示意图；
图2为本申请提供的一种MCCH的DRX机制示意图；
图3为本申请提供的一种通信系统的结构示意图；
图4为本申请提供的一种通信装置的结构示意图；
图5为本申请提供的一种广播多播业务的发送方法的流程示意图；
图6为本申请提供的一种MCCH承载的MTCH的配置信息的类型示意图；
图7为本申请提供的一种MCCH和MTCH的CFR的关系示意图；
图8为本申请提供的另一种广播多播业务的发送方法的流程示意图；
图9为本申请提供的一种第一MCCH和第二MCCH承载的配置信息的示意图；
图10为本申请提供的一种第一PDCCH和第二PDCCH的候选时域位置的示意图；
图11为本申请提供的另一种第一PDCCH和第二PDCCH的候选时域位置的示意图；
图12为本申请提供的一种接入网设备的结构示意图；
图13为本申请提供的一种窄带终端的结构示意图；
图14为本申请提供的一种宽带终端的结构示意图；
图15为本申请提供的一种核心网设备的结构示意图。
具体实施方式
在本申请的描述中，除非另有说明，“/”表示前后关联的对象是一种“或”的关系，例如，A/B可以表示A或B；本申请中的“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况，其中A，B可以是单数或者复数。
在本申请的描述中，除非另有说明，“多个”是指两个或多于两个。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。
另外，为了便于清楚描述本申请实施例的技术方案，在本申请的实施例中，采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定，并且“第一”、“第二”等字样也并不限定一定不同。
在本申请实施例中，“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请实施例中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其它实施例或设计方案更优选或更具优势。确切而言，使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念，便于理解。
可以理解，说明书通篇中提到的“实施例”意味着与实施例有关的特定特征、结构或特性包括在本申请的至少一个实施例中。因此，在整个说明书各个实施例未必指相同的实施例。此外，这些特定的特征、结构或特性可以任意适合的方式结合在一个或多个实施例中。可以理解，在本申请的各种实施例中，各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
可以理解，在本申请中，“…时”以及“若”均指在某种客观情况下会做出相应的处理，并非是限定时间，且也不要求实现时要有判断的动作，也不意味着存在其它限定。
可以理解，本申请实施例中的一些可选的特征，在某些场景下，可以不依赖于其他特征，比如其当前所基于的方案，而独立实施，解决相应的技术问题，达到相应的效果，也可以在某些场景下，依据需求与其他特征进行结合。相应的，本申请实施例中给出的装置也可以相应的实现这些特征或功能，在此不予赘述。
本申请中，除特殊说明外，各个实施例之间相同或相似的部分可以互相参考。在本申请中各个实施例、以及各实施例中的各个实施方式/实施方法/实现方法中，如果没有特殊说明以及逻辑冲突，不同的实施例之间、以及各实施例中的各个实施方式/实施方法/实现方法之间的术语和/或描述具有一致性、且可以相互引用，不同的实施例、以及各实施例中的各个实施方式/实施方法/实现方法中的技术特征根据其内在的逻辑关系可以组合形成新的实施例、实施方式、实施方法、或实现方法。以下所述的本申请实施方式并不构成对本申请保护范围的限定。
为了方便理解本申请实施例的技术方案，首先给出本申请相关技术的简要介绍如下。
1、窄带终端、宽带终端：
窄带终端的带宽能力低于宽带终端的带宽能力。窄带终端也可以称为缩减能力(reduced capability，RedCap)终端。可以理解的，本申请实施例中的“带宽”指频域带宽。
2、公共频域资源(common frequency resource，CFR)：
CFR：接入网设备为广播多播业务在组公共(group-common)物理下行控制信道(physical downlink control channel，PDCCH)/物理下行共享信道(physical downlink share channel，PDSCH)上配置或定义的一段连续的公共频域资源。
3、广播多播服务(multicast broadcast service，MBS)：
MBS是一种点到多点的服务。MBS业务包括广播服务业务和多播服务业务。MBS业务中，数据从单个源实体向多个接收者发送，或者向广播服务区域中的所有用户发送，或者向多播组中的用户传输。
为了方便描述，本申请实施例中将MBS称为广播多播业务，二者可以相互替换，本申请对此不作具体限定。
4、NR中的广播机制：
如图1所示，NR的广播机制中，在类型X的系统消息块(system information block typeX，SIBX)中携带组播控制逻辑信道(multicast control channel，MCCH)的配置信息，在MCCH中携带一个或多个广播业务逻辑信道(multicast traffic channel，MTCH)的配置信息。通常情况下，具体的广播多播业务和MTCH存在对应关系。例如，广播多播业务和MTCH一一对应。
MCCH由无线网络临时标识(radio network temporary identifier，RNTI)加扰。MCCH承载相邻小区对于本小区的广播多播业务的支持情况以及MTCH的配置信息。MCCH中承载的MTCH的配置信息映射在PDSCH传输。
MCCH使用变更周期的概念，在每一个变更周期中，MCCH承载的内容不变，且按照重复周期多次发送，以便终端在任何时刻接入小区时，都能尽快获取MCCH。MCCH的调度和接收使用非连续接收(discontinuous reception，DRX)机制，由DRX周期、持续定时器(onDurationTimer)、DRX去活动定时器(DRX-InactivityTimer)等进行控制。
参见图2，为MCCH的DRX机制的一种示意。在持续定时器及DRX去活动定时器运行期间，终端使用MCCH无线网络临时标识(MCCH radio network temporary identifier，MCCH-RNTI)监听PDCCH以获取MCCH的调度信息。其中：
1)持续定时器按照配置的DRX周期周期性启动。
2)DRX去活动定时器在承载MCCH的PDSCH传输的最后一个子帧启动或重启，在终端收到PDCCH中承载的MCCH的调度信息后停止。
MTCH的配置信息主要包括：
1)、广播多播业务对应的临时移动组标识(temporary mobile group identity，TMGI)或会话标识(session ID)与组无线网络临时标识(group radio network temporary identifier，G-RNTI)的映射(或对应)关系；
2)、MTCH使用的DRX参数(例如DRX周期、onDurationTimer、DRX-InactivityTimer等)；
3)、MTCH所在载波及PDCCH的搜索空间配置。即MTCH承载的信息映射在PDSCH传输。PDCCH用于承载MTCH的调度信息。MTCH承载的信息即广播多播业务。
MTCH使用G-RNTI加扰。不同的MTCH可以在不同的载波上传输。MTCH的调度和接收可以使用与MCCH相同的DRX机制和DRX参数，即由DRX周期、onDurationTimer、DRX-InactivityTimer等参数进行控制。在onDurationTimer及DRX-InactivityTimer运行期间，终端使用对应的G-RNTI监听PDCCH以获取MTCH的调度信息。
随着窄带终端对广播多播服务需求的扩大，可能存在窄带终端和宽带终端需要接收同一广播多播业务的场景。基于此，本申请提供一种广播多播业务的发送方法，在窄带终端和宽带终端需要接收同一广播多播业务的场景下，能够合理地配置并发送该广播多播业务，尽可能降低资源开销。
下面将结合附图对本申请的方案进行说明。本申请实施例的技术方案可用于各种通信系统，该通信系统可以为第三代合作伙伴计划(third generation partnership project，3GPP)通信系统，例如，NR系统，长期演进(long term evolution，LTE)系统，车联网(vehicle to everything，V2X)系统，LTE和5G混合组网的系统，设备到设备(device-to-device，D2D)通信系统、机器到机器(machine to machine，M2M)通信系统、物联网(Internet of Things，IoT)，或其他下一代通信系统。或者该通信系统也可以为非3GPP通信系统，不予限制。
本申请实施例的技术方案可以应用于各种通信场景，例如可以应用于以下通信场景中的一种或多种：增强移动宽带(enhanced mobile broadband，eMBB)、超可靠低时延通信(ultra reliable low latency communication，URLLC)、机器类型通信(machine type communication，MTC)、大规模机器类型通信(massive machine type communications，mMTC)、D2D、V2X、M2M、或IoT等通信场景。
其中，上述适用本申请的通信系统和通信场景仅是举例说明，适用本申请的通信系统和通信场景不限于此，在此统一说明，以下不再赘述。
参见图3，为本申请实施例提供的一种通信系统。该通信系统包括核心网设备301、接入网设备302、窄带终端303、宽带终端304。
可以理解的，本申请对窄带终端和宽带终端的数量不作具体限定，系统中包括至少两个窄带终端和至少两个宽带终端。
可选的，核心网设备301可以是负责移动网络中的移动性管理的设备，例如NR中的接入和移动管理功能(access and mobility management function，AMF)网元。或者，核心网设备301可以是负责移动网络中的会话管理的设备，例如NR中的会话管理功能(session management function，SMF)网元。
可选的，接入网设备302是一种将终端接入到无线网络的设备。所述接入网设备302可以为无线接入网中的节点，又可以称为基站，还可以称为无线接入网(radio access network，RAN)节点(或设备)。示例性的，接入网设备可以为5G系统中的下一代节点B(next generation node B，gNB)，传输接收点(transmission reception point，TRP)、家庭基站(例如，home evolved NodeB，或home Node B，HNB)，基带单元(base band unit，BBU)，基带池BBU pool，或WiFi接入点(access point，AP)等。或者接入网设备可以为云接入网(cloud radio access network，CloudRAN)系统中的集中式单元(centralized unit，CU)和/或分布式单元(distributed unit，DU)。又或者可以为非陆地网络(non-terrestrial network，NTN)中实现基站功能的设备。再或者，可以为IoT中实现基站功能的设备，V2X、D2D、或者M2M中实现基站功能的设备，本申请实施例并不限定。
可选的，窄带终端303可以是带宽能力较小的，用于实现无线通信功能的设备。示例性的，窄带终端可以是可穿戴设备，工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等。或者，窄带终端可以是IoT中的终端，D2D通信中的终端、或者M2M通信中的终端等。
可选的，宽带终端304可以是带宽能力较大的，用于实现无线通信功能的设备。示例性的，宽带终端可以是蜂窝电话、无绳电话、会话启动协议(session initiation protocol，SIP)电话、无线本地环路(wireless local loop，WLL)站、个人数字处理(personal digital assistant，PDA)、具有无线通信功能的手持设备(例如智能手机)、计算设备或连接到无线调制解调器的其它处理设备、车载设备、虚拟现实(virtual reality，VR)终端设备、增强现实(augmented reality，AR)终端设备、远程医疗(remote medical)中的无线终端等。
本申请涉及的终端、接入网设备、核心网设备的相关功能可以由一个设备实现，也可以由多个设备共同实现，还可以是由一个设备内的一个或多个功能模块实现，或者可以为一个或多个芯片，也可以为片上系统(system on chip，SOC)或芯片系统，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，本申请实施例对此不作具体限定。
可以理解的是，上述功能既可以是硬件设备中的网络元件，也可以是在专用硬件上运行的软件功能，或者是硬件与软件的结合，或者是平台(例如，云平台)上实例化的虚拟化功能。
例如，本申请涉及的终端、接入网设备、核心网设备的相关功能可以通过图4中的通信设备400来实现。图4所示为本申请实施例提供的通信设备400的结构示意图。该通信设备400包括一个或多个处理器401以及至少一个通信接口(图4中仅是示例性的以包括通信接口404，以及一个处理器401为例进行说明)，可选的还可以包括通信线路402和存储器403。
处理器401可以是一个通用中央处理器(central processing unit，CPU)，微处理器，特定应用集成电路(application-specific integrated circuit，ASIC)，数字信号处理器(DSP)，微控制器(microcontroller unit，MCU)，或人工智能处理器等用于控制本申请方案程序执行的集成电路。
在具体实现中，作为一种实施例，处理器401可以包括一个或多个CPU，例如图4中的CPU0和CPU1。
通信接口404，用于与其他设备或通信网络通信。所述通信接口404可以是收发器、收发机一类的装置。或者，所述通信接口404也可以是位于处理器401内的收发电路，用以实现处理器的信号输入和信号输出。
通信线路402用于通信装置400包括的不同组件之间的通信。
存储器403可以是具有存储功能的装置。例如可以是只读存储器(read-only memory，ROM)或可存储静态信息和指令的其他类型的静态存储设备，随机存取存储器(random access memory，RAM)或者可存储信息和指令的其他类型的动态存储设备，也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory，EEPROM)、只读光盘(compact disc read-only memory，CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质，但不限于此。存储器可以是独立存在，通过通信线路402与处理器相连接。存储器也可以和处理器集成在一起。
可选的，存储器403用于存储执行本申请方案的计算机执行指令，并由处理器401来控制执行。处理器401用于执行存储器403中存储的计算机执行指令，从而实现本申请实施例中提供的方法。
可选的，本申请实施例中的计算机执行指令也可以称之为应用程序代码，本申请实施例对此不作具体限定。
在具体实现中，作为一种实施例，通信设备400还可以包括输出设备405和输入设备406。 输出设备405和处理器401通信，可以以多种方式来显示信息。例如，输出设备405可以是液晶显示器(liquid crystal display，LCD)，发光二极管(light emitting diode，LED)显示设备，阴极射线管(cathode ray tube，CRT)显示设备，或投影仪(projector)等。输入设备406和处理器401通信，可以以多种方式接收用户的输入。例如，输入设备406可以是鼠标、键盘、触摸屏设备或传感设备等。
需要说明的是，图4中示出的组成结构并不构成对该通信装置的限定，除图4所示部件之外，该通信装置可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件布置。
下面结合图3所示通信系统，对本申请实施例提供的广播多播业务的发送方法进行详细描述。
需要说明的是，本申请下述实施例中，各个设备之间的消息名称、各参数的名称、或各信息的名称等只是一个示例，在其他的实施例中也可以是其他的名称，本申请所提供的方法对此不作具体限定。
可以理解的，本申请实施例中，各个设备可以执行本申请实施例中的部分或全部步骤，这些步骤或操作仅是示例，本申请实施例还可以执行其它操作或者各种操作的变形。此外，各个步骤可以按照本申请实施例呈现的不同的顺序来执行，并且有可能并非要执行本申请实施例中的全部操作。
如图5所示，为本申请提供的一种广播多播业务的发送方法，该方法可以应用于图3所示的通信系统，该方法包括如下步骤：
S501、核心网设备生成指示信息。
其中，指示信息指示广播多播业务的接收方是否包括窄带终端和宽带终端。或者说，指示信息指示广播多播业务的接收方的类型。接收方的类型可以包括：窄带终端、宽带终端、窄带终端和宽带终端。本申请以指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端为例进行说明。
S502、核心网设备向接入网设备发送指示信息。相应的，接入网设备接收来自核心网设备的指示信息。
可选的，核心网设备可以在包括广播多播业务的信令中向接入网设备发送指示信息。示例性的，核心网设备向接入网设备发送广播多播业务时可以采用如下两种业务发送模式。模式1：如表1所示，一个信令包含单个广播多播业务。模式2：如表2所示，一个信令包括多个广播多播业务。
表1
广播多播业务的标识(如TMGI)
其他信息(other information)
表2
广播多播业务的标识列表(如TMGI list)
其他信息(other information)
其中，广播多播业务的标识用于标识广播多播业务，一个广播多播业务对应一个标识，不同广播多播业务的标识不同。
可选的，指示信息可以包括至少一个指示符。至少一个指示符和至少一个广播多播业务的标识存在对应关系。至少一个广播多播业务包括目标广播多播业务。
可选的，指示符的不同取值表示指示符对应的广播多播业务的接收方的不同情况。例如， 指示符的取值为第一数值时，表示其对应的广播多播业务的接收方包括窄带终端和宽带终端；指示符的取值为第二数值时，表示其对应的广播多播业务的接收方为窄带终端；指示符的取值为第三数值时，表示其对应的广播多播业务的接收方为宽带终端。
或者，指示符的取值为第一数值时，表示其对应的广播多播业务的接收方包括窄带终端和宽带终端；指示符的取值为第二数值时，表示其对应的广播多播业务的接收方为窄带终端或宽带终端。本申请对此不作具体限定。
作为一种可能的实现，指示信息包括一个指示符，该指示符对应特定的一个目标广播多播业务，指示该目标广播多播业务的接收方包括窄带终端和宽带终端。示例性的，如表3所示，指示符可以携带在核心网设备向接入网设备发送的包括该特定的目标广播多播业务的信令中。
表3
目标广播多播业务的标识(如TMGI)
其他信息(other information)
指示符(indicator)
作为另一种可能的实现，指示信息包括多个指示符，多个指示符和多个广播多播业务的标识存在对应关系。多个广播多播业务包括目标广播多播业务。多个指示符中包括与目标广播多播业务对应的指示符。示例性的，如表4所示，多个指示符可以携带在核心网设备向接入网设备发送的包括目标广播多播业务的信令中。
表4
广播多播业务的标识列表
其他信息
指示符列表
作为一种可能的示例，多个指示符和多个广播多播业务的标识的对应关系可以为一一对应。即一个指示符对应一个广播多播业务的标识，不同指示符对应的广播多播业务的标识不同。某个指示符用于指示其对应的广播多播业务的接收方是否包括窄带终端和宽带终端。
例如，表4中的广播多播业务的标识列表可以包括K个标识，指示符列表可以包括K个指示符。该K个广播多播业务中可以包括一个或多个目标广播多播业务。K为大于1的正整数。
示例性的，指示符和广播多播业务的标识的对应关系可以是交叉对应，例如，第一个指示符对应最后一个广播多播业务的标识，第二个指示符对应倒数第二个广播多播业务的标识等。或者，指示符和广播多播业务的标识的对应关系是按顺序对应，例如，第k个指示符对应第k个广播多播业务的标识，k为2至K的正整数。
例如，以K等于4，广播多播业务的标识为TMGI为例，假设广播多播业务的标识列表为{TMGI#1、TMGI#2、TMGI#3、TMGI#4}，相应的指示符列表可以为{指示符1、指示符2、指示符3、指示符4}。标识和指示符的对应关系可以为：指示符1对应TMGI#1，指示TMGI#1标识的广播多播业务的接收方的类型；指示符2对应TMGI#2，指示TMGI#2标识的广播多播业务的接收方的类型；指示符3对应TMGI#3，指示TMGI#3标识的广播多播业务的接收方的类型；指示符4对应TMGI#4，指示TMGI#4标识的广播多播业务的接收方的类型。
作为另一种可能的示例，多个指示符对应多个广播多播业务的标识中的部分标识。例如，表4中的广播多播业务的标识列表可以包括K个标识，指示符列表可以包括J个指示符，J小于K。该J个指示符与K个标识中的J个标识对应，例如对应前J个标识、或后J个标识、 或中间J个标识，不予限制。未对应指示符的标识所标识的广播多播业务的接收方可以默认为宽带终端或窄带终端。
基于上述方案，采用以业务为粒度的指示信息，能够更灵活的指示各个业务各自对应的接收方的类型，实现不同业务对应不同接收方类型的指示。
作为又一种可能的实现，指示信息包括一个指示符，一个指示符和多个广播多播业务的标识存在对应关系。多个广播多播业务中的每个广播多播业务均为目标广播多播业务。
示例性的，如表5所示，指示符可以携带在核心网设备向接入网设备发送的包括目标广播多播业务的信令中。广播多播业务的标识列表可以包括X个标识。指示符指示该X个标识所标识的X个广播多播业务的接收方包括窄带终端和宽带终端。
表5
广播多播业务的标识列表
其他信息
指示符
可选的，该X个广播多播业务可以是单个小区的多个广播多播业务。或者可以是上述接入网设备管理的多个小区的广播多播业务。或者可以是核心网设备关联的多个接入网设备管理的多个小区的广播多播业务，本申请对此不作具体限定。
基于该方案，用一个指示符指示多个广播多播业务的接收方的类型，可以节省指示信息的信令开销。
S503、接入网设备向窄带终端和宽带终端发送MCCH。相应的，窄带终端和宽带终端接收来自接入网设备的该MCCH。
其中，该MCCH用于承载目标广播多播业务的MTCH的配置信息。指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端时，MCCH满足以下一种或多种限制：
1)MCCH对应的第一频域资源不超过窄带终端的最大带宽能力。
可选的，MCCH对应的第一频域资源可以为MCCH能够占用的最大带宽。示例性的，第一频域资源可以为CFR，MCCH对应的第一频域资源即为MCCH的CFR。MCCH的CFR可以理解为MCCH能够占用的最大带宽。
2)MCCH占用的调度带宽不超过窄带终端的最大带宽能力。
其中，MCCH占用的调度带宽为MCCH实际占用的带宽。MCCH占用的调度带宽为MCCH的CFR的部分或全部带宽。MCCH占用的调度带宽为MCCH的CFR的部分带宽时，MCCH的CFR可以超过窄带终端的最大带宽能力。
可选的，在该步骤S503之前，该方法还可以包括：接入网设备确定上述MCCH。
基于该方案，由于本申请限制MCCH对应的第一频域资源或占用的调度带宽不超过窄带终端的最大带宽能力，因此窄带终端有能力接收该MCCH。从而，在该限制下，接入网设备可以发送一次MCCH，窄带终端和宽带终端均能收到该MCCH。相比于接入网设备分别针对窄带终端和宽带终端单独发送SIBX、MCCH、和MTCH，降低了资源开销。
此外，由于接入网设备向窄带终端和宽带终端发送一次MCCH，从而可以使用一个RNTI对该MCCH进行加扰，即窄带终端和宽带终端可以共用一个RNTI，节省了RNTI的开销。
可选的，MCCH可以承载多个MTCH的配置信息。假设接收方包括窄带终端，不包括宽带中的广播多播业务记为第一类业务；将接收方包括宽带终端，且不包括窄带终端的广播多播业务为第二类业务；将接收方包括窄带终端和宽带终端的广播多播业务记为第三类业务。此时，如图6所示，该多个MTCH可以存在如下四种情况：
1)、多个MTCH包括第二类业务的MTCH和第三类业务的MTCH。
2)、多个MTCH包括第一类业务的MTCH和第三类业务的MTCH。
3)、多个MTCH包括第一类业务的MTCH、第二类业务的MTCH、和第三类业务的MTCH。
4)、多个MTCH包括第三类业务的MTCH。
可选的，MCCH承载的MTCH的配置信息满足上述四种情况的任意一种情况时，MTCH的配置信息的总数不超过阈值，该阈值为MCCH承载宽带终端或窄带终端的MTCH的配置数目上限。也就是说，若MCCH仅承载第一类业务的MTCH的配置信息或仅承载第二类业务的MTCH的配置信息时的配置数目上限为X，那么MCCH承载的MTCH的配置信息满足上述四种情况中的一种时，配置数据上限同样为X。
可选的，该阈值可以由MCCH的传输块大小(transport blocks size，TBS)和MCCH承载的MTCH的配置信息的数据包大小确定。
由于MCCH的TBS有限，其承载的MTCH的配置信息的数目不能无限增加，基于该方案，限制了MTCH的配置信息的数目，满足MCCH的TBS限制。
可以理解的是，图6中的MTCH的配置信息仅用于广播多播业务的接收方的类型示意，并不限制MTCH的配置信息的数目为3。
可选的，MCCH的CFR和MTCH的CFR可以相同，也可以不同，本申请对此不作具体限定。如图7所示，MCCH的CFR和MTCH#2的CFR相同，和MTCH#1、MTCH#3的CFR不同。在MCCH的CFR和MTCH的CFR相同的情况下，可以减少终端的射频(radio frequency，RF)重调(retuning)。
S504、接入网设备在MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务。相应的，窄带终端和宽带终端在该MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。
可以理解的，该MTCH为上述步骤S503中所述的目标广播多播业务的MTCH。MTCH映射在PDSCH上传输，MTCH对应的频域资源为PDSCH上的频域资源。
可选的，窄带终端和宽带终端在接收到MCCH后，可以获取MCCH中承载的目标广播多播业务的MTCH的配置信息，从而可以根据该配置信息，在MTCH对应的频域资源上接收目标广播多播业务。
可选的，接入网设备在MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务，可以包括：接入网设备在N个MTCH对应的频域资源上向窄带终端和宽带终端发送M个目标广播多播业务，N和M为正整数。
作为一种可能的实现，N和M的取值可以等于1。该场景下，MCCH可以承载目标广播多播业务的MTCH的一个配置信息，该配置信息配置的MTCH对应的频域资源的带宽不超过窄带终端的最大带宽能力。基于此，接入网设备在MTCH对应的频域资源上发送目标广播多播业务时，窄带终端和宽带终端均可以接收。也就是说，该可能的实现中，接收方包括窄带终端和宽带终端的广播多播业务可以只发送一次，进一步降低了资源开销。
作为另一种可能的实现，N和M的取值可以等于2。该场景下，MCCH可以承载目标广播多播业务的MTCH的两个配置信息，记为MTCH的配置信息A和MTCH的配置信息B。
其中，配置信息A配置的MTCH对应的频域资源记为频域资源A，该频域资源A不超过窄带终端的最大带宽能力。配置信息B配置的MTCH对应的频域资源记为频域资源B，该频域资源B不超过宽带终端的最大带宽能力。
相应的，接入网设备在频域资源A上向窄带终端发送目标广播多播业务，窄带终端在该频域资源A上接收来自接入网设备的目标广播多播业务。以及，接入网设备在频域资源B上向宽带终端发送目标广播多播业务，宽带终端在该频域资源B上接收来自接入网设备的目标广播多播业务。
也就是说，该可能的实现中，可以分别向窄带终端和宽带终端发送广播多播业务，提高广播多播业务发送的灵活性。
作为又一种可能的实现，N和M的取值可以不相等。例如，N的取值小于M的取值，如N等于1，M等于2，即接入网设备可以在一个MTCH对应的频域资源上发送2个目标广播多播业务。或者，N的取值可以大于M的取值，本申请对N和M的大小关系不作具体限定。
以上方案通过对MCCH进行限定使得MCCH可以发送一次，从而节省资源开销。此外，本申请还提供另一种广播多播业务的发送方法，通过限定MTCH发送一次来节省资源开销。
如图8所示，为本申请提供的另一种广播多播业务的发送方法，该方法可以应用于图3所示的通信系统，该方法包括如下步骤：
S801、核心网设备生成指示信息。
S802、核心网设备向接入网设备发送指示信息。相应的，接入网设备接收来自核心网设备的指示信息。
其中，步骤S801和步骤S802的详细说明可参考上述步骤S501和步骤S502中的相关描述，在此不再赘述。
S803、接入网设备向窄带终端发送第一MCCH。相应的，窄带终端接收来自接入网设备的第一MCCH。
其中，第一MCCH用于承载目标广播多播业务的MTCH的第一配置信息。第一配置信息配置的该MTCH对应的频域资源和第二配置信息配置的该MTCH对应的频域资源相同。第二配置信息为用于宽带终端的目标广播多播业务的MTCH的配置信息。
示例性的，第一配置信息和第二配置信息可以为目标广播多播业务的MTCH配置相同的载波，从而实现二者配置的MTCH对应的频域资源相同。
可以理解的，第一MCCH的CFR或调度带宽不超过窄带终端的最大带宽能力。
S804、接入网设备向宽带终端发送第二MCCH。相应的，宽带终端接收来自接入网设备的第二MCCH。
其中，第二MCCH用于承载目标广播多播业务的MTCH的第二配置信息。第二配置信息配置的该MTCH对应的频域资源和第一配置信息配置的该MTCH对应的频域资源相同。第一配置信息为用于窄带终端的目标广播多播业务的MTCH的配置信息。
可以理解的，第二MCCH的CFR或调度带宽不超过宽带终端的最大带宽能力。第二MCCH的CFR与窄带终端的最大带宽能力的关系不作限定。
可选的，目标广播多播业务的MTCH对应的频域资源可以包括用于窄带终端的MTCH的CFR和用于宽带终端的MTCH的CFR的部分或全部重叠资源。
可选的，如图9所示，第一MCCH和第二MCCH占用的频域资源可以存在重叠部分。第一MCCH中的该重叠部分可以承载目标广播多播业务的MTCH的第一配置信息(图9中以配置信息A表示)，第二MCCH中的该重叠部分可以承载目标广播多播业务的MTCH的第二配置信息(图9以配置信息B表示)。此外，第一MCCH中的非重叠部分可以承载第一类业务的MTCH的配置信息(图9中以配置信息C表示)，第二MCCH中的非重叠部分可以承 载第二类业务的MTCH的配置信息(图9中以配置信息D表示)。第一类业务和第二类业务可参考上述步骤S503中的相关描述，在此不再赘述。
需要说明的是，本申请不限定上述步骤S803和步骤S804的执行顺序。例如，可以先执行步骤S803，再执行步骤S804；或者，可以先执行步骤S804，再执行步骤S803；或者，可以同时执行步骤S803和步骤S804，不予限制。
S805、接入网设备在目标广播多播业务的MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务。相应的，窄带终端和宽带终端在该MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。
可选的，窄带终端在接收到第一MCCH后，可以获取第一MCCH中承载的目标广播多播业务的MTCH的第一配置信息，从而可以根据该第一配置信息，在MTCH对应的频域资源上接收目标广播多播业务。宽带终端可以获取第二MCCH中承载的目标广播多播业务的第二配置信息，从而可以根据该第二配置信息，在MTCH对应的频域资源上接收目标广播多播业务。
基于该方案，发送至窄带终端的MTCH的配置信息和发送至宽带终端的MTCH的配置信息配置的该MTCH对应的频域资源相同，使得窄带终端和宽带终端均可以收到接入网设备在该频域资源上发送的广播多播业务，从而对于接收方包括窄带终端和宽带终端的广播多播业务，接入网设备可以发送一次，相比于接入网设备分别针对窄带终端和宽带终端单独发送SIBX、MCCH、和MTCH的方案，能够降低资源开销。
可选的，第一配置信息包括第一G-RNTI，第二配置信息包括第二G-RNTI。第一G-RNTI和第二G-RNTI用于加扰目标广播多播业务。第一G-RNTI和第二G-RNTI可以相同。
基于该方案，在同一频域资源上向窄带终端和宽带终端发送同一广播多播业务时，使得窄带终端和宽带终端共用一个G-RNTI，可以节省可用的G-RNTI资源。
可选的，第一配置信息可以包括与第一G-RNRI对应的目标广播多播业务的第一标识，第二配置信息可以包括与第二G-RNTI对应的目标广播多播业务的第二标识。第一标识和第二标识可以相同。
可选的，目标广播多播业务的MTCH对应的频域资源由PDCCH承载的下行控制信息(downlink control information，DCI)调度。示例性的，由第一DCI为窄带终端调度目标广播多播业务的MTCH对应的频域资源，由第二DCI为宽带终端调度目标广播多播业务的MTCH对应的频域资源。其中，第一DCI由第一PDCCH承载，即第一PDCCH用于承载第一DCI。第二DCI由第二PDCCH承载，即第二PDCCH用于承载第二PDCCH。
可选的，第一PDCCH的候选频域位置和第二PDCCH的候选频域位置部分或全部重叠。示例性的，第二PDCCH的多个候选频域位置中可以包括第一PDCCH的至少一个候选频域位置。
可选的，第一PDCCH和第二PDCCH的候选频域位置用控制信道元素(control channel element，CCE)表示时，第一PDCCH和第二PDCCH对应的CCE到资源单元组(resource element group，REG)的映射方式可以均为非交织方式。该非交织方式可以是通过控制资源集合(control resource set，CORESET)中的参数配置的。
基于该方案，第二PDCCH的候选频域位置和第一PDCCH的候选频域位置部分或全部重叠时，第一DCI和第二DCI可以占用重叠的候选频域位置，即为窄带终端调度目标广播多播业务的MTCH对应的频域资源的DCI，和为宽带终端调度目标广播多播业务的MTCH对应的频域资源的DCI占用的频域位置可以相同，从而可以节省频域资源开销。
可选的，第一PDCCH的候选时域位置和第二PDCCH的候选时域位置部分或全部重叠。进一步的，第一PDCCH的候选时域位置和第二PDCCH的候选时域位置的重叠部分包括一个时隙内的至少两个连续的符号。
示例性的，可以通过搜索空间(search space)的监听周期、持续时间和偏移量参数配置监听时隙，使得第一PDCCH的监听时隙和第二PDCCH的监听时隙(slot)中存在至少一个重叠的时隙。如图10所示，第一PDCCH的监听时隙包括时隙0、时隙1、时隙3、时隙4、时隙6、时隙7和时隙9。第二PDCCH的监听时隙包括时隙1、时隙2、时隙5、时隙6、和时隙9。重叠时隙包括时隙1、时隙6、和时隙9。
进一步的，可以通过搜索空间的时隙内符号监听模式和CORESET的持续时间配置单个时隙内的监听模式，使得重叠时隙内存在至少两个连续的符号重叠。如图11所示，以时隙1中的符号为例，时隙1内第一PDCCH的监听符号包括符号0、符号1、符号4、符号5、符号8、符号9、符号12、和符号13。时隙1内第二PDCCH的监听符号包括符号0、符号1、符号2、符号5、符号6、符号7、符号10、符号11、和符号12。两个连续的重叠符号为符号0和符号1。
基于该方案，第二PDCCH的候选时域位置和第一PDCCH的候选时域位置部分或全部重叠时，第一DCI和第二DCI可以占用重叠的候选时域位置，即为窄带终端调度目标广播多播业务的MTCH对应的频域资源的DCI，和为宽带终端调度目标广播多播业务的MTCH对应的频域资源的DCI占用的时域位置可以相同，从而可以节省时域资源开销。
可选的，第一DCI和第二DCI分别为窄带终端和宽带终端调度同一频域资源，从而第一DCI和第二DCI可以相同。该场景下，接入网设备可以在第一时频资源上向窄带终端和宽带终端发送第一DCI(或第二DCI)。相应的，窄带终端和宽带终端在第一时频资源上接收来自接入网设备的第一DCI(或第二DCI)。
其中，第一时频资源的频域位置位于第一PDCCH的候选频域位置和第二PDCCH的候选频域位置的重叠部分。第一时频资源的时域位置位于第一PDCCH的候选时域位置和第二PDCCH的候选时域位置的重叠部分。
基于该方案，接入网设备可以在相同的时频资源上向窄带终端和宽带终端发送一个调度MTCH对应的频域资源的DCI，即为窄带终端和为宽带终端调度MTCH对应的频域资源的DCI为同一DCI，无需在不同的时频资源上分别为窄带终端和宽带终端发送不同的DCI，从而可以降低调度资源的开销。
可以理解的是，以上各个实施例中，由核心网设备实现的方法和/或步骤，也可以由可用于该核心网设备的部件(例如处理器、芯片、芯片系统、电路、逻辑模块、或软件)实现；由接入网设备实现的方法和/或步骤，也可以由可用于该接入网设备的部件(例如处理器、芯片、芯片系统、电路、逻辑模块、或软件)实现；由终端实现的方法和/或步骤，也可以有可用于该终端的部件(例如处理器、芯片、芯片系统、电路、逻辑模块、或软件)实现。
上述主要从各个设备之间交互的角度对本申请提供的方案进行了介绍。相应的，本申请还提供了通信装置，该通信装置用于实现上述各种方法。该通信装置可以为上述方法实施例中的接入网设备，或者为可用于接入网设备的部件；或者，该通信装置可以为上述方法实施例中的终端(窄带终端或宽带终端)，或者为可用于终端的部件；或者，该通信装置可以为上述方法实施例中的核心网设备，或者为可用于核心网设备的部件。
可以理解的是，该通信装置为了实现上述功能，其包含了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到，结合本文中所公开的实施例描述的各示 例的单元及算法步骤，本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法实施例对通信装置进行功能模块的划分，例如，可以对应各个功能划分各个功能模块，也可以将两个或两个以上的功能集成在一个处理模块中。上述集成的模块既可以采用硬件的形式实现，也可以采用软件功能模块的形式实现。需要说明的是，本申请实施例中对模块的划分是示意性的，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式。
在一种实施场景下，以通信装置为上述方法实施例中的接入网设备为例，图12示出了一种接入网设备120的结构示意图。该接入网设备120包括接收模块1201和发送模块1202。
在一些实施例中，该接入网设备120还可以包括处理模块1203。进一步的，还可以包括存储模块(图12中未示出)，用于存储程序指令和数据。
在一些实施例中，接收模块1201和发送模块1202可以统称为收发模块。接收模块1201可以由接收电路、接收机、接收器、或者输入接口构成。发送模块1202，可以由发送电路、发送机、发送器、或者输出接口构成。
在一些实施例中，接收模块1201和发送模块1202，可以分别用于执行上述方法实施例中由接入网设备执行的接收和发送类的步骤，和/或用于支持本文所描述的技术的其它过程；处理模块1203，可以用于执行上述方法实施例中由接入网设备执行的处理类(例如确定等)的步骤，和/或用于支持本文所描述的技术的其它过程。
作为一种可能的实现：
接收模块1201，用于接收来自核心网设备的指示信息，指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端；发送模块1202，用于向窄带终端和宽带终端发送MCCH，MCCH用于承载目标广播多播业务的MTCH的配置信息，MCCH对应的第一频域资源或占用的调度带宽不超过窄带终端的最大带宽能力；发送模块1202，还用于在MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务。
可选的，发送模块1202，用于在MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务，包括：发送模块1202，用于在N个MTCH对应的频域资源上向窄带终端和宽带终端发送M个目标广播多播业务，N和M为正整数。
可选的，处理模块1203，用于生成该MCCH。
作为另一种可能的实现：
接收模块1201，用于接收来自核心网设备的指示信息，指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端；发送模块1202，用于向窄带终端发送第一MCCH，以及向宽带终端发送第二MCCH，第一MCCH用于承载目标广播多播业务的MTCH的第一配置信息，第二MCCH用于承载MTCH的第二配置信息；第一配置信息配置的MTCH对应的频域资源和第二配置信息配置的MTCH对应的频域资源相同；发送模块1202，还用于在MTCH对应的频域资源上向窄带终端和宽带终端发送目标广播多播业务。
可选的，发送模块1202，还用于在第一时频资源上向窄带终端和宽带终端发送第一DCI，第一时频资源的频域位置位于第一PDCCH的候选频域位置和第二PDCCH的候选频域位置的重叠部分，第一时频资源的时域位置位于第一PDCCH的候选时域位置和第二PDCCH的候选时域位置的重叠部分。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本申请中，该接入网设备120以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定专用集成电路(application-specific integrated circuit，ASIC)，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
在一些实施例中，在硬件实现上，本领域的技术人员可以想到该接入网设备120可以采用图4所示的通信装置400的形式。
作为一种示例，图12中的处理模块1203的功能/实现过程可以通过图4所示的通信装置400中的处理器401调用存储器403中存储的计算机执行指令来实现，图12中的接收模块1201和发送模块1202的功能/实现过程可以通过图4所示的通信装置400中的通信接口404来实现。
在一些实施例中，当图12中的接入网设备120是芯片或芯片系统时，接收模块1201和发送模块1202的功能/实现过程可以通过芯片或芯片系统的输入输出接口(或通信接口)实现，处理模块1203的功能/实现过程可以通过芯片或芯片系统的处理器(或者处理电路)实现。
由于本实施例提供的接入网设备120可执行上述方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
在一种实施场景下，以通信装置为上述方法实施例中的窄带终端为例，图13示出了一种窄带终端130的结构示意图。该窄带终端130包括接收模块1301。
在一些实施例中，该窄带终端130还可以包括处理模块1302。进一步的，还可以包括存储模块和发送模块(图13中未示出)，存储模块用于存储程序指令和数据，发送模块用于实现发送类的步骤。
在一些实施例中，接收模块1301可以由接收电路、接收机、接收器、或者输入接口构成。
在一些实施例中，接收模块1301，可以用于执行上述方法实施例中由窄带终端执行的接收类的步骤，和/或用于支持本文所描述的技术的其它过程；处理模块1302，可以用于执行上述方法实施例中由窄带终端执行的处理类(例如确定等)的步骤，和/或用于支持本文所描述的技术的其它过程。
作为一种可能的实现：
接收模块1301，用于接收来自接入网设备的MCCH，MCCH用于承载目标广播多播业务的MTCH的配置信息，MCCH对应的第一频域资源或占用的调度带宽不超过窄带终端的最大带宽能力；接收模块1301，还用于在MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。
作为另一种可能的实现：
接收模块1301，用于接收来自接入网设备的第一MCCH，第一MCCH用于承载目标广播多播业务的MTCH的第一配置信息；第一配置信息配置的MTCH对应的频域资源和第二配置信息配置的MTCH对应的频域资源相同，第二配置信息为用于宽带终端的MTCH的配置信息；接收模块1301，还用于在MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。
可选的，接收模块1301，还用于在第一时频资源上接收来自接入网设备的第一DCI，第一时频资源的频域位置位于第一PDCCH的候选频域位置和第二PDCCH的候选频域位置的 重叠部分，第一时频资源的时域位置位于第一PDCCH的候选时域位置和第二PDCCH的候选时域位置的重叠部分。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本申请中，该窄带终端130以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定专用集成电路(application-specific integrated circuit，ASIC)，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
在一些实施例中，在硬件实现上，本领域的技术人员可以想到该窄带终端130可以采用图4所示的通信装置400的形式。
作为一种示例，图13中的处理模块1302的功能/实现过程可以通过图4所示的通信装置400中的处理器401调用存储器403中存储的计算机执行指令来实现，图13中的接收模块1301和发送模块的功能/实现过程可以通过图4所示的通信装置400中的通信接口404来实现。
在一些实施例中，当图13中的窄带终端130是芯片或芯片系统时，接收模块1301和发送模块的功能/实现过程可以通过芯片或芯片系统的输入输出接口(或通信接口)实现，处理模块1302的功能/实现过程可以通过芯片或芯片系统的处理器(或者处理电路)实现。
由于本实施例提供的窄带终端130可执行上述方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
在一种实施场景下，以通信装置为上述方法实施例中的宽带终端为例，图14示出了一种宽带终端140的结构示意图。该宽带终端140包括接收模块1401。
在一些实施例中，该宽带终端140还可以包括处理模块1402。进一步的，还可以包括存储模块和发送模块(图14中未示出)，存储模块用于存储程序指令和数据，发送模块用于实现发送类的步骤。
在一些实施例中，接收模块1401可以由接收电路、接收机、接收器、或者输入接口构成。
在一些实施例中，接收模块1401，可以用于执行上述方法实施例中由宽带终端执行的接收类的步骤，和/或用于支持本文所描述的技术的其它过程；处理模块1402，可以用于执行上述方法实施例中由宽带终端执行的处理类(例如确定等)的步骤，和/或用于支持本文所描述的技术的其它过程。
作为一种可能的实现：
接收模块1401，用于接收来自接入网设备的MCCH，MCCH用于承载目标广播多播业务的MTCH的配置信息，MCCH对应的第一频域资源或占用的调度带宽不超过宽带终端的最大带宽能力；接收模块1401，还用于在MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。
作为另一种可能的实现：
接收模块1401，用于接收来自接入网设备的第二MCCH，第二MCCH用于承载目标广播多播业务的MTCH的第二配置信息；第二配置信息配置的MTCH对应的频域资源和第一配置信息配置的MTCH对应的频域资源相同，第一配置信息为用于窄带终端的MTCH的配置信息；接收模块1401，还用于在MTCH对应的频域资源上接收来自接入网设备的目标广播多播业务。
可选的，接收模块1401，还用于在第一时频资源上接收来自接入网设备的第一DCI，第一时频资源的频域位置位于第一PDCCH的候选频域位置和第二PDCCH的候选频域位置的 重叠部分，第一时频资源的时域位置位于第一PDCCH的候选时域位置和第二PDCCH的候选时域位置的重叠部分。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在本申请中，该宽带终端140以采用集成的方式划分各个功能模块的形式来呈现。这里的“模块”可以指特定专用集成电路(application-specific integrated circuit，ASIC)，电路，执行一个或多个软件或固件程序的处理器和存储器，集成逻辑电路，和/或其他可以提供上述功能的器件。
在一些实施例中，在硬件实现上，本领域的技术人员可以想到该宽带终端140可以采用图4所示的通信装置400的形式。
作为一种示例，图14中的处理模块1402的功能/实现过程可以通过图4所示的通信装置400中的处理器401调用存储器403中存储的计算机执行指令来实现，图14中的接收模块1401和发送模块的功能/实现过程可以通过图4所示的通信装置400中的通信接口404来实现。
在一些实施例中，当图14中的宽带终端140是芯片或芯片系统时，接收模块1401和发送模块的功能/实现过程可以通过芯片或芯片系统的输入输出接口(或通信接口)实现，处理模块1402的功能/实现过程可以通过芯片或芯片系统的处理器(或者处理电路)实现。
由于本实施例提供的宽带终端140可执行上述方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
在一种实施场景下，以通信装置为上述方法实施例中的核心网设备为例，图15示出了一种核心网设备150的结构示意图。该核心网设备150包括处理模块1501和收发模块1502。
在一些实施例中，该核心网设备150还可以包括存储模块(图15中未示出)，用于存储程序指令和数据。
在一些实施例中，收发模块1502也可以称为收发单元。可以由收发电路、收发机、收发器、或者通信接口构成。
在一些实施例中，收发模块1502，可以包括接收模块和发送模块，可以分别用于执行上述方法实施例中由核心网设备执行的接收和发送类的步骤，和/或用于支持本文所描述的技术的其它过程；处理模块1501，可以用于执行上述方法实施例中由核心网设备执行的处理类(例如生成等)的步骤，和/或用于支持本文所描述的技术的其它过程。
作为一种可能的实现：
处理模块1501，用于生成指示信息，该指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端。收发模块1502，用于向接入网设备发送该指示信息。
其中，上述方法实施例涉及的各步骤的所有相关内容均可以援引到对应功能模块的功能描述，在此不再赘述。
在一些实施例中，在硬件实现上，本领域的技术人员可以想到核心网设备150可以采用图4所示的通信装置400的形式。
作为一种示例，图15中的处理模块1501的功能/实现过程可以通过图4所示的通信装置400中的处理器401调用存储器403中存储的计算机执行指令来实现，图15中的收发模块1502的功能/实现过程可以通过图4所示的通信装置400中的通信接口404来实现。
在一些实施例中，当图15中的核心网设备150是芯片或芯片系统时，收发模块1502的功能/实现过程可以通过芯片或芯片系统的输入输出接口(或通信接口)实现，处理模块1501的功能/实现过程可以通过芯片或芯片系统的处理器(或者处理电路)实现。
由于本实施例提供的核心网设备150可执行上述方法，因此其所能获得的技术效果可参考上述方法实施例，在此不再赘述。
在一些实施例中，本申请实施例还提供一种通信装置，该通信装置包括处理器，用于实现上述任一方法实施例中的方法。
作为一种可能的实现方式，该通信装置还包括存储器。该存储器，用于保存必要的程序指令和数据，处理器可以调用存储器中存储的程序代码以指令该通信装置执行上述任一方法实施例中的方法。当然，存储器也可以不在该通信装置中。
作为另一种可能的实现方式，该通信装置还包括接口电路，该接口电路为代码/数据读写接口电路，该接口电路用于接收计算机执行指令(计算机执行指令存储在存储器中，可能直接从存储器读取，或可能经过其他器件)并传输至该处理器。
作为又一种可能的实现方式，该通信装置还包括通信接口，该通信接口用于与该通信装置之外的模块通信。
可以理解的是，该通信装置可以是芯片或芯片系统，该通信装置是芯片系统时，可以由芯片构成，也可以包含芯片和其他分立器件，本申请实施例对此不作具体限定。
本申请还提供了一种计算机可读存储介质，其上存储有计算机程序或指令，该计算机程序或指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供了一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
本领域普通技术人员可以理解，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
可以理解，本申请中描述的系统、装置和方法也可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，即可以位于一个地方，或者也可以分布到多个网络单元上。作为单元显示的部件可以是或者也可以不是物理单元。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件程序实现时，可以全部或部分地以计算机程序产品的形式来实现。该计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行计算机程序指令时，全部或部分地产生按照本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或者数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可以用介质集成的服务器、数据中心等数据存储设备。所 述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)，光介质(例如，DVD)、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。本申请实施例中,计算机可以包括前面所述的装置。
尽管在此结合各实施例对本申请进行了描述，然而，在实施所要求保护的本申请过程中，本领域技术人员通过查看所述附图、公开内容、以及所附权利要求书，可理解并实现所述公开实施例的其他变化。在权利要求中，“包括”(comprising)一词不排除其他组成部分或步骤，“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施，但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述，显而易见的，在不脱离本申请的精神和范围的情况下，可对其进行各种修改和组合。相应地，本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明，且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然，本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样，倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内，则本申请也意图包含这些改动和变型在内。

Claims (24)

  1. 一种广播多播业务的发送方法，其特征在于，所述方法包括：
    接收来自核心网设备的指示信息，所述指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端；
    向所述窄带终端和所述宽带终端发送组播控制逻辑信道MCCH，所述MCCH用于承载所述目标广播多播业务的广播业务逻辑信道MTCH的配置信息，所述MCCH对应的第一频域资源或占用的调度带宽不超过所述窄带终端的最大带宽能力；
    在所述MTCH对应的频域资源上向所述窄带终端和所述宽带终端发送所述目标广播多播业务。
  2. 根据权利要求1所述的方法，其特征在于，所述指示信息包括至少一个指示符，所述至少一个指示符和至少一个广播多播业务的标识存在对应关系，所述至少一个广播多播业务包括所述目标广播多播业务。
  3. 根据权利要求1或2所述的方法，其特征在于，所述MCCH承载的MTCH的配置信息的总数不超过阈值，所述阈值为MCCH承载宽带终端或窄带终端的MTCH的配置数目上限。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，在所述MTCH对应的频域资源上向所述窄带终端和所述宽带终端发送所述目标广播多播业务，包括：
    在N个MTCH对应的频域资源上向所述窄带终端和所述宽带终端发送M个目标广播多播业务，N和M为正整数。
  5. 根据权利要求1-4任一项所述的方法，其特征在于，所述MCCH对应的第一频域资源为所述MCCH能够占用的最大带宽。
  6. 一种广播多播业务的发送方法，其特征在于，所述方法包括：
    接收来自核心网设备的指示信息，所述指示信息指示目标广播多播业务的接收方包括窄带终端和宽带终端；
    向所述窄带终端发送第一组播控制逻辑信道MCCH，以及向所述宽带终端发送第二MCCH，所述第一MCCH用于承载所述目标广播多播业务的广播业务逻辑信道MTCH的第一配置信息，所述第二MCCH用于承载所述MTCH的第二配置信息；所述第一配置信息配置的所述MTCH对应的频域资源和所述第二配置信息配置的所述MTCH对应的频域资源相同；
    在所述MTCH对应的频域资源上向所述窄带终端和所述宽带终端发送所述目标广播多播业务。
  7. 根据权利要求6所述的方法，其特征在于，所述指示信息包括至少一个指示符，所述至少一个指示符和至少一个广播多播业务的标识存在对应关系，所述至少一个广播多播业务包括所述目标广播多播业务。
  8. 根据权利要求6或7所述的方法，其特征在于，所述第一配置信息包括第一组无线网络临时标识G-RNTI，所述第二配置信息包括第二G-RNTI，所述第一G-RNTI和所述第二G-RNTI相同，所述第一G-RNTI和所述第二G-RNTI用于加扰所述目标广播多播业务。
  9. 根据权利要求6-8任一项所述的方法，其特征在于，第一物理下行控制信道PDCCH的候选频域位置和第二PDCCH的候选频域位置部分或全部重叠；
    所述第一PDCCH用于承载第一下行控制信息DCI，所述第一DCI用于为所述窄带终端调度所述MTCH对应的频域资源；所述第二PDCCH用于承载第二DCI，所述第二DCI用于 为所述宽带终端调度所述MTCH对应的频域资源。
  10. 根据权利要求9所述的方法，其特征在于，所述第一PDCCH的候选时域位置和所述第二PDCCH的候选时域位置部分或全部重叠。
  11. 根据权利要求10所述的方法，其特征在于，所述第一DCI和所述第二DCI相同；所述方法还包括：
    在第一时频资源上向所述窄带终端和所述宽带终端发送所述第一DCI，所述第一时频资源的频域位置位于所述第一PDCCH的候选频域位置和所述第二PDCCH的候选频域位置的重叠部分，所述第一时频资源的时域位置位于所述第一PDCCH的候选时域位置和所述第二PDCCH的候选时域位置的重叠部分。
  12. 一种广播多播业务的接收方法，其特征在于，所述方法包括：
    接收来自接入网设备的组播控制逻辑信道MCCH，所述MCCH用于承载目标广播多播业务的广播业务逻辑信道MTCH的配置信息，所述MCCH对应的第一频域资源或占用的调度带宽不超过窄带终端的最大带宽能力；
    在所述MTCH对应的频域资源上接收来自所述接入网设备的所述目标广播多播业务。
  13. 根据权利要求12所述的方法，其特征在于，所述MCCH承载的MTCH的配置信息的总数不超过阈值，所述阈值为MCCH承载用于宽带终端或窄带终端的MTCH的配置时，所述用于宽带终端或窄带终端的MTCH的配置数目上限。
  14. 一种广播多播业务的接收方法，其特征在于，所述方法应用于窄带终端，所述方法包括：
    接收来自接入网设备的第一组播控制逻辑信道MCCH，所述第一MCCH用于承载所述目标广播多播业务的广播业务逻辑信道MTCH的第一配置信息；所述第一配置信息配置的所述MTCH对应的频域资源和第二配置信息配置的所述MTCH对应的频域资源相同，所述第二配置信息为用于宽带终端的所述MTCH的配置信息；
    在所述MTCH对应的频域资源上接收来自所述接入网设备的所述目标广播多播业务。
  15. 一种广播多播业务的接收方法，其特征在于，所述方法应用于宽带终端，所述方法包括：
    接收来自接入网设备的第二组播控制逻辑信道MCCH，所述第二MCCH用于承载所述目标广播多播业务的广播业务逻辑信道MTCH的第二配置信息；所述第二配置信息配置的所述MTCH对应的频域资源和第一配置信息配置的所述MTCH对应的频域资源相同，所述第一配置信息为用于窄带终端的所述MTCH的配置信息；
    在所述MTCH对应的频域资源上接收来自所述接入网设备的所述目标广播多播业务。
  16. 根据权利要求14或15的方法，其特征在于，所述第一配置信息包括第一组无线网络临时标识G-RNTI，所述第二配置信息包括第二G-RNTI，所述第一G-RNTI和所述第二G-RNTI相同，所述第一G-RNTI和所述第二G-RNTI用于加扰所述目标广播多播业务。
  17. 根据权利要求14-16任一项所述的方法，其特征在于，第一物理下行控制信道PDCCH的候选频域位置和第二PDCCH的候选频域位置部分或全部重叠；
    所述第一PDCCH用于承载第一下行控制信息DCI，所述第一DCI用于为窄带终端调度所述MTCH对应的频域资源；所述第二PDCCH用于承载第二DCI，所述第二DCI用于为宽带终端调度所述MTCH对应的频域资源。
  18. 根据权利要求17所述的方法，其特征在于，所述第一PDCCH的候选时域位置和所述第二PDCCH的候选时域位置部分或全部重叠。
  19. 根据权利要求18所述的方法，其特征在于，所述第一DCI和所述第二DCI相同；所述方法还包括：
    在第一时频资源上向接收来自所述接入网设备的第一DCI，所述第一时频资源的频域位置位于所述第一PDCCH的候选频域位置和所述第二PDCCH的候选频域位置的重叠部分，所述第一时频资源的时域位置位于所述第一PDCCH的候选时域位置和所述第二PDCCH的候选时域位置的重叠部分。
  20. 一种通信装置，其特征在于，所述通信装置包括用于执行如权利要求1-11中任一项所述方法的模块，或者，包括用于执行如权利要求12-19中任一项所述方法的模块。
  21. 一种通信装置，其特征在于，所述通信装置包括：至少一个处理器；
    所述处理器，用于执行计算机程序或指令，以实现如权利要求1-11中任一项所述的方法，或者，以实现如权利要求12-19中任一项所述的方法。
  22. 一种计算机可读存储介质，其特征在于，包括指令，当所述指令在通信装置上运行时，以使如权利要求1-11中任一项所述的方法被执行，或者，以使如权利要求12-19中任一项所述的方法被执行。
  23. 一种通信系统，其特征在于，所述通信系统包括：用于执行如权利要求1-11中任一项所述方法的接入网设备，和，用于执行如权利要求12-19中任一项所述方法的终端。
  24. 一种计算机程序产品，其特征在于，所述计算机程序产品包括计算机指令；当部分或全部所述计算机指令在计算机上运行时，使得如权利要求1-11中任一项所述的方法被执行，或者，使得如权利要求12-19中任一项所述的方法被执行。
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