CN116615920A - Communication method, device and storage medium - Google Patents

Communication method, device and storage medium Download PDF

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Publication number
CN116615920A
CN116615920A CN202180079837.8A CN202180079837A CN116615920A CN 116615920 A CN116615920 A CN 116615920A CN 202180079837 A CN202180079837 A CN 202180079837A CN 116615920 A CN116615920 A CN 116615920A
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China
Prior art keywords
information
network
identification information
bits
node
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CN202180079837.8A
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Chinese (zh)
Inventor
卢飞
王淑坤
郭雅莉
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • 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
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

The embodiment of the application provides a communication method, equipment and a storage medium, wherein the method comprises the following steps: the terminal equipment receives first information, wherein the first information is used for indicating the length of first identification information, and the first identification information is used for the terminal equipment to request a multimedia broadcast multicast service; the terminal device determines at least one bit in the temporary mobile group identification information included in the first identification information and/or at least one bit in the identification information of the first network included, the first network being a network serving the terminal device, according to the first information. In order to improve the flexibility of configuration and resource utilization.

Description

Communication method, device and storage medium Technical Field
Embodiments of the present application relate to communications technologies, and in particular, to a communications method, device, and storage medium.
Background
Fifth generation (5) th The generation, 5G) wireless communication system can provide a dedicated access network for the vertical industry in addition to meeting the mobile broadband internet service requirement of the common user, and the third generation partnership project (3rd generation partnership project,3GPP) adds non-public network (NPN) scene requirement, function research and standardization work in the 5G Rel-16 standard. NPN can be well integrated with the industrial Internet, end-to-end resource isolation is realized, a dedicated access network is provided for the vertical industry, terminal equipment in the non-vertical industry is limited to access to the dedicated network or the frequency band, and independent sharing of client resources in the vertical industry is ensured.
The multimedia broadcast multicast service (multimedia broadcast multicast service, MBMS) is a point-to-multipoint transmission type service for a plurality of terminal equipments, such as a live broadcast service, a partial public safety service, a bulk software update service, etc. The network resource sharing is realized, and the utilization rate of the network resource, especially the air interface resource, is improved.
However, how to apply the point-to-multipoint transmission mechanism to NPN to increase the network resource utilization becomes a problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the application provides a communication method, a device and a storage medium, so as to improve the flexibility of configuration and the resource utilization rate.
In a first aspect, an embodiment of the present application may provide a communication method, applied to a terminal device, where the method includes:
the terminal equipment receives first information, wherein the first information is used for indicating the length of first identification information, and the first identification information is used for the terminal equipment to request a multimedia broadcast multicast service;
the terminal device determines at least one bit in the temporary mobile group identification information included in the first identification information and/or at least one bit in the identification information of the first network included, the first network being a network serving the terminal device, according to the first information.
In a second aspect, an embodiment of the present application may further provide a communication method, applied to a network device, where the method includes:
the first network node determining a length of first identification information for the terminal device to request the multimedia broadcast multicast service, the first identification information including at least one bit in temporary mobile group identification information and/or at least one bit in identification information of a first network, the first network being a network serving the terminal device;
the first network node sends first information to the terminal device, the first information being used to indicate the length of the first identification information.
In a third aspect, an embodiment of the present application may further provide a terminal device, including:
a transceiver unit, configured to receive first information, where the first information is used to indicate a length of first identification information, and the first identification information is used for the terminal device to request a multimedia broadcast multicast service;
and the processing unit is used for determining at least one bit in the temporary mobile group identification information included in the first identification information and/or at least one bit in the identification information of the first network, wherein the first network is a network for providing service for the terminal equipment.
In a fourth aspect, an embodiment of the present application may further provide a network device, including:
a processing unit, configured to determine a length of first identification information, where the first identification information is used for a terminal device to request a multimedia broadcast multicast service, the first identification information includes at least one bit in temporary mobile group identification information and/or at least one bit in identification information of a first network, and the first network is a network that provides services for the terminal device;
and the receiving and transmitting unit is used for transmitting first information to the terminal equipment, wherein the first information is used for indicating the length of the first identification information.
In a fifth aspect, an embodiment of the present application may further provide a terminal device, including:
a processor, a memory, an interface to communicate with a network device;
the memory stores computer-executable instructions;
the processor executing computer-executable instructions stored in the memory causes the processor to perform the communication method as provided in any one of the first aspects.
In a sixth aspect, an embodiment of the present application may further provide a network device, including:
the device comprises a processor, a memory and an interface for communicating with the terminal equipment;
the memory stores computer-executable instructions;
The processor executing computer-executable instructions stored in the memory causes the processor to perform the communication method as provided in any of the second aspects.
In a seventh aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the communication method according to any of the first aspects when the computer-executable instructions are executed by a processor.
In an eighth aspect, embodiments of the present application provide a computer-readable storage medium having stored therein computer-executable instructions for implementing the communication method according to any of the second aspects when the computer-executable instructions are executed by a processor.
In a ninth aspect, an embodiment of the present application provides a program for executing the communication method according to any one of the first aspect above, when the program is executed by a processor.
In a tenth aspect, embodiments of the present application also provide a program for executing the communication method according to any one of the above second aspects, when the program is executed by a processor.
Alternatively, the processor may be a chip.
In an eleventh aspect, an embodiment of the present application provides a computer program product comprising program instructions for implementing the communication method according to any one of the first aspects.
In a twelfth aspect, embodiments of the present application provide a computer program product comprising program instructions for implementing the communication method of any one of the second aspects.
In a thirteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module being capable of performing the communication method of any of the first aspects.
Further, the chip further comprises a memory module (e.g. a memory) for storing instructions, the processing module for executing the instructions stored in the memory module, and execution of the instructions stored in the memory module causes the processing module to perform the communication method of any one of the first aspects.
In a fourteenth aspect, an embodiment of the present application provides a chip, including: a processing module and a communication interface, the processing module being capable of performing the method of any of the second aspects.
Further, the chip further comprises a memory module (e.g. a memory) for storing instructions, the processing module for executing the instructions stored in the memory module, and execution of the instructions stored in the memory module causes the processing module to perform the communication method of any one of the second aspects.
Drawings
FIG. 1 is a schematic diagram of a communication system according to the present application;
FIG. 2 is a schematic diagram of a point-to-multipoint network architecture according to the present application;
fig. 3 is a schematic flow chart of an MBMS service setup procedure;
FIG. 4 is a diagram showing an example of the constituent structure of the TMGI;
FIG. 5 is an exemplary diagram of the constituent structure of a NID;
FIG. 6 is a schematic flow chart of a communication method provided by the present application;
fig. 7 is an exemplary diagram of a structure of first identification information provided by the present application;
FIG. 8 is a schematic flow chart diagram of a first embodiment of a communication method provided by the present application;
fig. 9 is a schematic flow chart of a second embodiment of a communication method provided by the present application;
FIG. 10 is a schematic flow chart diagram of a third embodiment of a communication method provided by the present application;
FIG. 11 is a schematic block diagram of an example of a communication device of the present application;
fig. 12 is a schematic structural view of an example of the terminal device of the present application;
fig. 13 is a schematic configuration diagram of an example of a network device of the present application.
Detailed Description
The technical scheme of the embodiment of the application can be applied to various communication systems, such as: long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), universal mobile telecommunications system (universal mobile telecommunications system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) telecommunications systems, fifth generation (5th generation,5G) systems or New Radio (NR), and the like.
Fig. 1 is a schematic diagram of a communication system 100 suitable for use in embodiments of the present application.
As shown in fig. 1, the communication system 100 may include at least one network device, such as network device 110 in fig. 1; the communication system 100 may also include at least one terminal device, such as terminal device 120 in fig. 1. Wherein the terminal device 120 may be mobile or stationary. Network device 110 and terminal device 120 communicate via a wireless link. The network device 110 may be an access network node in a NPN that provides network services to the terminal device 120 through the network device 110.
The terminal device in the embodiments of the present application may be a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a terminal device, a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular telephone, a cordless telephone, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, a personal digital assistant (personal digital assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a 5G network or a terminal device in a future evolved public land mobile network (public land mobile network, PLMN), etc., as embodiments of the present application are not limited in this respect.
By way of example, and not limitation, in embodiments of the present application, the terminal device may also be a wearable device. The wearable device can also be called as a wearable intelligent device, and is a generic name for intelligently designing daily wear by applying wearable technology and developing wearable devices, such as glasses, gloves, watches, clothes, shoes and the like. The wearable device is a portable device that is worn directly on the body or integrated into the clothing or accessories of the user. The wearable device is not only a hardware device, but also can realize a powerful function through software support, data interaction and cloud interaction. The generalized wearable intelligent device includes full functionality, large size, and may not rely on the smart phone to implement complete or partial functionality, such as: smart watches or smart glasses, etc., and focus on only certain types of application functions, and need to be used in combination with other devices, such as smart phones, for example, various smart bracelets, smart jewelry, etc. for physical sign monitoring.
In addition, in the embodiment of the application, the terminal equipment can also be terminal equipment in an internet of things (internet of things, ioT) system, and the IoT is an important component of the development of future information technology, and the main technical characteristics are that the object is connected with the network through a communication technology, so that the man-machine interconnection and the intelligent network of the internet of things are realized.
The network device in the embodiment of the present application may be a device for communicating with a terminal device, where the network device may be an evolved base station (evolutional nodeB, eNB or eNodeB) in an LTE system, or may be a wireless controller in a cloud radio access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, a vehicle device, a network device in a 5G network, or a network device in a PLMN network that is evolved in the future, or the like, where the embodiment of the present application is not limited.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
The terms first, second and the like in the description of embodiments of the application, in the claims and in the above-described figures, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The following description is made of related art and terms related to the present application.
1. 5G point-to-multipoint network architecture
In a 5G system, a point-to-multipoint transmission mechanism will be introduced. The network architecture of such a transport mechanism may be as shown in fig. 2. Wherein, the service layer and/or the application layer comprises application function (application function, AF)/application server (application server, AS) nodes, multimedia broadcast service function (multimedia broadcast service function, MBSF) -Control Plane (CP) nodes, namely MBSF-C, MBSF-User Plane (UP) nodes, namely MBSF-U, network opening function (network exposure function, NEF) nodes. Wherein, the AF/AS and the MBSF-C, MBSF-U, NEF are communicated through xMB-U/MB2-U, xMB-C/MB2-C, N33 interfaces respectively. And the AF/AS communicates with transport layer multimedia broadcast (multimedia broadcast, MB) -user plane (user plane function, UPF) nodes (i.e., MB-UPF) via the N6/MB2-U interface. Communication is carried out between the MBSF-C and NEF and between the MBSF-U through xMB-C/MB2-C, nmbsu interfaces respectively, and communication is carried out between the MBSF-C and policy control function (policy control function, PCF) nodes of a transmission layer and MB-session management function (session management function, SMF) nodes (namely MB-SMF) through the Npcf and Nmbsmf interfaces respectively. Communication is performed between the MBSF-U and the MB-UPF nodes of the transport layer via an N6 interface. And communication is carried out between the NEF and PCF nodes and between the NEF and MB-SMF nodes of the transmission layer through the Npcf interfaces and the Nmbsmf interfaces respectively.
In the network architecture of the point-to-multipoint transport mechanism shown in fig. 2, the transport layer includes PCF nodes, MB-SMF nodes, MB-UPF nodes, access and mobility function (access and mobility management function, AMF) nodes, SMF nodes, UPF nodes, and radio access network (radio access network, RAN) nodes. The PCF is communicated with the MB-SMF and the AMF through N7 and N15 interfaces respectively, the MB-SMF is communicated with the MB-UPF, SMF, AMF through N4, N16a and N11 interfaces respectively, the MB-UPF is communicated with the RAN through an MB-N3 interface, the SMF is communicated with the AMF and the UPF through N11 and N4 interfaces respectively, and the AMF is communicated with the RAN through an N2 interface. In the network architecture shown in fig. 2, terminal devices (e.g., UE1, UE2, and UE 3) may communicate with the network after establishing a wireless connection with the RAN node.
The 5G core network (5G core,5 GC) supports protocol data unit (protocol data unit, PDU) connection service, namely, the service of exchanging PDU data packets between UE and Data Network (DN); the PDU connection service is implemented by the UE initiating the establishment of a PDU session. After a PDU session is established, a data transmission channel between the UE and the DN is established.
Subscription information for each single network slice selection assistance information (single-network slice selection assistance information, S-nsai) may include a default DN name (DN name, DNN) and multiple DNNs, no DNN providing S-nsai when the UE initiates a PDU session establishment request (PDU session establishment request), the serving AMF will select the default DNN for its S-nsai; if there is no default DNN, the service AMF will select a locally configured DNN for the S-NSSAI. If the UE does not support the DNN carried in the PDU session establishment request message and the AMF fails to select an appropriate SMF by querying the network element data warehouse function (NF repository function, NRF) node, the AMF denies the PDU connection request, carrying the cause value "DNN is not supported (DNN is not supported)".
Each PDU session supports one PDU session type, namely one of network protocol (internet protocol, IP) version 4 (i.e., IPv 4), IP version 6 (i.e., IPv 6), IPv4v6, ethernet (Ethernet), unstructured (Unstructured).
In the multicast data transmission process, when the terminal establishes a PDU session, a PDU session is established for the same service, and in the session, both unicast data transmission of the service and multicast data transmission of the data can be supported.
In the data interface N3 interface between the core network and the RAN, a UE-specific N3 channel may be used, where both unicast data and multicast data for the UE are transmitted in this specific channel. A shared transmission channel may also be used, where the transmission channel is shared by multiple terminals for data transmission, where the multiple terminals may belong to the same group.
2. MBMS service establishment procedure
Fig. 3 is a schematic flow chart of an MBMS service setup procedure including, but not limited to, the steps of:
step 1, unified data warehouse (unified data repository, UDR), MB-SMF, MB-UPF and MBSF multicast configuration, which can refer to fig. 8.2.3-2 in 3GPP technical report TR 23.757;
step 2, the UE carries out a registration process and carries out a PDU session establishment process according to DNN, S-NSSAI; in the UE registration process, the UE needs to provide the AMF with the multicast capability of the UE, and in the PDU session establishment process, the AMF needs to select the SMF with the multicast capability;
step 3, the content provider performs service announcement, and the announcement message can include temporary mobile group identification (temporary mobile group identity, TMGI). An IP multicast address (IP multicast address) may also be provided where the UE is able to join the service.
Step 4, in order to join the multicast service, the UE initiates a PDU session modification process, and the UE carries a multicast address or TMGI in a PDU session modification request message;
step 5, the amf sends an nsmf_pdu session update SM context message, that is, an nsmf_pdustion_updatsmcontext message, to the SMF, where the nsmf_pdustion_updatsmcontext message carries an SM context ID and the PDU session modification request message sent by the UE in step 4.
Step 6, the SMF needs to check whether the UE can use the multicast service or not from the UDR, and acquire MB-SMF identification, namely MB-SMF ID;
step 7, the UDR returns MB-SMF ID to the SMF;
step 8, after the SMF acquires the MB-SMF ID, the SMF sends a multicast service quality (quality of service, qoS) request message to the MB-SMF;
step 9, the MB-SMF returns a multicast QoS response message to the SMF, wherein the message comprises a QoS message corresponding to a multicast QoS flow (QoS flow);
step 10, the SMF sends a namf_communication_n1n2message forwarding message, that is, a namf_communication_n1n2message transfer message, which carries N2SM information, and an N1SM container, that is, an N1SM container, where the N2SM information further includes a PDU Session identifier (PDU Session ID), a multicast context identifier (Multicast Context ID), a multicast group ID (TMGI, multicast IP address), an MB-SMF ID, multicast QoS flow information (QoS flow ID and corresponding QoS information), and the N1SM container further includes a PDU Session modification instruction (PDU Session Modification Command) message, and the PDU Session Modification Command message includes a PDU Session ID, multicast information, where the multicast information includes details of Multicast Context ID, multicast QoS flow information, and a multicast address;
If the SMF is configured to support a unicast rollback mechanism, the SMF also needs to provide a corresponding relation between unicast QoS flow and multicast QoS flow in the N2SM information and the N1SM container;
step 11, the AMF sends an N2 session modification request message to the RAN, wherein the message carries the content in the N2SM information in step 10; the RAN decides whether group resources have been allocated based on the multicast group ID; if not, the RAN also needs to allocate the group resources;
step 12, RAN carries out RRC resource reconfiguration and forwards N1SM container to UE;
step 13, RAN allocates group resources; the RAN sends a multicast transmission request message to the AMF, wherein the message carries MB-SMF ID information and multicast group ID; if the RAN uses unicast to receive the multicast service, the RAN distributes a downlink GTP-U TEID and a downlink IP address and carries the downlink GTP-U TEID and the downlink IP address to the AMF in a multicast transmission request message;
step 14, AMF selects MB-SMF according to MB-SMF ID, and sends multicast sending request message to selected MB-SMF, wherein the message carries multicast group ID, downlink GTP-U TEID and downlink IP address distributed in step 13;
step 15, if the downlink GTP-U TEID and the downlink IP address are carried in step 13 and step 14, the MB-SMF needs to send an N4 session modification request message to the MB-UPF; the message carries a downlink GTP-U TEID and a downlink IP address;
Step 16, the MB-UPF sends an N4 session modification response message to the MB-SMF;
step 17, the MB-SMF returns a multicast transmission response message to the AMF;
step 18, AMF returns multicast sending response message to RAN;
step 19, the RAN returns an N2 response message to the AMF; the N2 response message does not carry downlink tunnel information;
step 20, the amf sends an N2 response message to the SMF, which decides to use the shared tunnel to transmit the multicast traffic, so that no interaction with the UPF is required;
step 21, the MB-UPF receives multicast data from a content provider or MBF-U; the MB-UPF transmits multicast data to the RAN;
in step 22, the ran decides whether to use a point-to-point (PTP) transmission mode or a point-to-multipoint (PTM) transmission mode to send multicast data to the UE.
In order for the UE to request to join the multicast service, the UE sends a PDU session modification request message in step 4 above, where the PDU session modification request message carries a TMGI, and the format of the TMGI is shown in fig. 4, and includes an MBMS service ID with a number of 6 digits 16, a mobile country code (mobile country code, MCC) with a number of 3 digits, and a mobile network code (mobile network code, MNC) with a number of 2 or 3 digits. The MCC and MNC are able to identify a public land mobile network (public land mobile network, PLMN), i.e. an MCC and an MNC constitute a PLMN ID. One TMGI may uniquely identify one MBMS bearer entity (MBMS bear instance).
Of the NPNs, a separate NPN (stand-alone NPN, SNPN) may be identified by a PLMN ID and a network identification (network identifier, NID). Wherein the NID contains 11 hexadecimal digits in the format shown in fig. 5, the NID includes an assignment pattern of 1 hexadecimal digits and a NID value of 10 hexadecimal digits.
If the MBMS service is supported in the NPN, the terminal device in the NPN needs to include the NID of the NPN in the TMGI sent when the terminal device requests to join the multicast service, so that the NPN can be identified, however, the NID includes 11 hexadecimal numbers altogether, and signaling overhead of the terminal device sending the MBMS service ID and the network identifier (including the PMLN ID and the NID) for requesting the MBMS service is relatively large. Considering that NPN network IDs are not exhausted in some operator networks and/or that the MBMS service provided is of a smaller variety, there may be an unused number of bits, such as NID and/or MBMS service ID. Therefore, the application proposes that the network provides the length information of the first identification information (the first identification information is used for requesting the MBMS service) for the terminal equipment, so that the terminal equipment can determine the length of the first identification information according to the length information, thereby improving the resource utilization rate and increasing the flexibility of network configuration.
The following describes the scheme of the present application with reference to the drawings.
Fig. 6 is a schematic flow chart of a communication method provided by the present application.
S610, the network node determines the length of the first identification information.
The first identification information is used for the terminal equipment to request the MBMS service. The network node is a node in a first network. The first network provides network services for the terminal device.
In an embodiment, the network node determines the number of N bits in the TMGI included in the first identification information, where the TMGI includes the number of K bits, N is less than or equal to K.
For example, the network node may determine the number of MBMS service IDs according to the number of MBMS services, one MBMS service ID identifying each MBMS service. For example, the number of MBMS services may indicate different MBMS service IDs by only 4-bit hexadecimal numbers, and then the 6-bit MBMS service ID includes 2 unused bits. Therefore, the network node may determine that the first identification information includes 4 bits in the MBMS service ID. That is, the number of bits of the MBMS service ID in the TMGI identification included in the first identification information is 4, but the present application is not limited thereto.
In a second embodiment, the network node determines a number of M bits in the NID included in the first identification information, where the NID includes a number of L bits, m+.l.
Optionally, the first network is an NPN.
For example, the network node may determine the number of NIDs based on the number of existing NPN, and one NID may represent one NPN. For example, the number of the existing NPNs only needs 7-bit hexadecimal numbers to indicate different NPNs, and the 11-bit NID contains 4 unused bits. Thus, the network node may determine that the first identification information includes a 7-bit hexadecimal number in the NID. But the present application is not limited thereto.
In the third embodiment, the first and second embodiments may be combined, and the network device may determine the N number of bits in the TMGI included in the first identification information, and determine the M number of bits in the NID included in the first identification information.
S620, the network node sends first information to the terminal device, where the first information is used to indicate the length of the first identification information.
Accordingly, the terminal device receives the first information from the network node. After determining the length of the first identification information in S610, the network node informs the terminal device of the first information in S620 so that the terminal device determines the first identification information.
In the case of the first embodiment in S610, the first information includes first indication information, where the first indication information is used to indicate that the first identification information includes the number of N bits in the TMGI.
Optionally, the N-bit number is a consecutive N-bit number starting with the nth bit in the TMGI. Wherein n is protocol-specified, network-preconfigured or indicated by first information, 0 < n.ltoreq.K, and n is an integer.
For example, the first indication information indicates N, where the protocol specifies that N is the N number of the TMGI from the lowest order to the highest order, and the terminal device may determine that the first identification information includes the lower N number of the TMGI after receiving the first indication information. Or the protocol may specify that the start bit of the N number of bits is the most significant bit and the N number of bits is the most significant to the least significant bit. Still alternatively, the protocol may specify n as other bits than the least significant bit and the most significant bit. The application is not limited in this regard.
As another example, the network device may configure the value of n for the terminal device via configuration information (e.g., a radio resource control (radio resource control, RRC) message, etc.) prior to transmitting the first information. But the present application is not limited thereto.
For another example, the first indication information indicates an identification N of a start bit and a number N of consecutive bits. After receiving the first indication information, the terminal equipment can determine the number of N bits in the TMGI. For example, the TMGI includes 11 hexadecimal numbers, the lowest mark in the TMGI is 0, and the marks sequentially increase from the lower order to the higher order, and the mark of the highest order is 10. The first indication information indicates that the start bit is identified as n=8, and n=5, and the terminal device may determine, according to the first indication information, that the first identification information includes a consecutive number of 5 bits from high to low in the TMGI, where the number of bits identified as 8 is the start bit. But the present application is not limited thereto.
In the case of the second embodiment in S610, the first information includes second indication information for indicating that the first identification information includes the number of M bits in the NID.
Optionally, the M number of bits is a consecutive M number of bits starting with the mth bit of the NID. Wherein m is protocol-specified, network-preconfigured or indicated by first information, 0 < m.ltoreq.L, and m is an integer.
The specific embodiment is similar to the above determination of the number of N bits in the TMGI, and the number of M bits in the NID may be determined with reference to the above description, and for brevity, will not be described again.
In the case of the third embodiment in S610, the first information includes the first instruction information and the second instruction information.
The number of N bits may be referred to as a truncated length of TMGI, and the number of M bits may be referred to as a truncated length of NID, but the present application is not limited thereto.
As an example and not by way of limitation, the number of bits indicated by the first indication information and/or the second indication information may be the number of binary bits, the number of decimal bits, or the number of hexadecimal bits.
One binary bit is 1 bit, the value can be 0 or 1, the first indication information can indicate N bits, and the second indication information indicates M bits; one decimal bit takes one value from 0 to 9, the first indicating information can indicate N decimal bits, and the second indicating information indicates M decimal bits; one hexadecimal bit takes one value from 0 to F, the first indicating information may indicate N hexadecimal bits, and the second indicating information indicates M hexadecimal bits.
S630, the terminal equipment determines first identification information according to the first information.
The terminal device determines at least one bit in the temporary mobile group identification information included in the first identification information and/or at least one bit in the identification information of the first network included, according to the first information, the first network being a network providing service for the terminal device.
In the case that the first information includes the first indication information, the terminal device may determine that the first identification information includes a consecutive N-bit number with an nth bit in the TMGI as a start bit according to the first indication information.
In the case that the first information includes the second indication information, the terminal device may determine that the first identification information includes a consecutive M-bit number with an mth bit in the NID as a start bit, based on the second indication information.
For example, the first information includes first indication information indicating that n=7, the terminal device may determine that the first identification information includes the lower 7 digits of the TMGI according to the first indication information, and the terminal device may determine that the first identification information includes the lower 7 digits of the TMGI. Alternatively, the terminal device may default that the first identification information includes all bits of NID, and the first identification information includes 18 bits in total, including the lower 7 bits of TMGI and all bits of NID. But the present application is not limited thereto.
For another example, the first information includes first indication information indicating n=8 and second indication information indicating m=6, and the terminal device may determine that the first identification information includes the lower 8 digits of the TMGI according to the first indication information and determine that the first identification information includes the lower 6 digits of the NID according to the second indication information. Thus, the first identification information may include a total of 14 digits including the lower 8 digits of the TMGI and the lower 6 digits of the NID. The format of the first identification information may be as shown in fig. 7, but the present application is not limited thereto.
S640, the terminal device sends an MBMS service request message, where the MBMS service request message includes the first identification information.
After determining the first identification information in S630, the terminal device may request the MBMS service by transmitting an MBMS service request message to the network. The MBMS service request message includes the first identification information. After receiving the MBMS request message, the node in the network can determine the MBMS requested by the terminal equipment according to the first identification information.
The MBMS service request message is, by way of example and not limitation, a PDU session modification request message.
It should be noted that the communication method provided in the embodiment shown in fig. 6 may be applied to NPN, PLMN or other networks, and the present application is not limited thereto.
According to the scheme, the network can determine the length of the first identification information according to the network condition and inform the terminal equipment through the first information, so that the terminal equipment can determine the length of the first identification information according to the first information. The flexibility of network configuration can be improved. The length of the first identification information is shortened according to the actual condition of the network, so that signaling overhead can be reduced, and the resource utilization rate is improved.
Example 1
The network node in the communication method shown in fig. 6 may be a RAN node. Fig. 8 is a schematic flow chart of a first embodiment of the present application.
S810, the RAN node determines a length of the first identification information.
Alternatively, the RAN node may be a next generation RAN (NG-RAN) in a 5G system.
The specific embodiment may refer to the description in S610 in fig. 6, and for brevity, will not be described herein.
S820, the RAN node sends a first message to the terminal device, where the first message includes first information.
Accordingly, the terminal device receives the first message from the RAN node.
In one embodiment, the first message is a system message sent by the RAN node.
For example, after the RAN node determines the length of the first identification information in S810, the RAN node may include the first information in a broadcasted system message block (system information block, SIB). But the application is not limited thereto.
In another embodiment, the first message is an RRC release message or an RRC reconfiguration message sent by the RAN node.
For example, before S820, an RRC connection is established between the terminal device and the RAN node, and an access stratum security connection is established, for example, the RAN node sends a security mode command (security mode command) to the terminal device, and the terminal device sends a security mode complete message to the network device to complete the access stratum security connection establishment. And then, the RAN node sends an RRC release message to the terminal equipment, wherein the RRC release message comprises the first information, or the RAN node sends an RRC reconfiguration message to the terminal equipment, and the RRC reconfiguration message comprises the first information. But the present application is not limited thereto.
S830, the terminal equipment determines first identification information according to the first information.
The specific embodiment may refer to the description in S630, and for brevity, will not be described in detail herein.
After determining the first identification information, the terminal device may send an MBMS service request message containing the first identification information to the network to request the MBMS service.
According to the scheme, the RAN node can bear the first information through the SIB, the RRC release message or the RRC reconfiguration message, so that the terminal equipment can determine the length of the first identification information according to the first information. The flexibility of network configuration can be improved. The length of the first identification information is shortened according to the actual condition of the network, so that signaling overhead can be reduced, and the resource utilization rate is improved.
Example two
The network node in the communication method shown in fig. 6 may be an AMF node. Fig. 9 is a schematic flow chart of a second embodiment of the present application.
S910, the terminal equipment sends a registration request message to the AMF node.
Correspondingly, the AMF node receives the registration request message, and determines that the terminal device requests to register to a first network, where the first network is the network where the AMF node is located.
S920, an authentication process is performed between the terminal equipment and the network.
S930, the AMF node sends a security mode command message to the terminal device.
Accordingly, the terminal device receives the security mode command message from the AMF node to establish a non-access stratum (NAS) security connection.
S940, the terminal device sends a security mode completion message to the AMF node
Accordingly, the AMF node receives the security mode complete message from the terminal device, thereby completing the NAS security connection.
S950, the AMF node sends a registration accept message to the terminal device, where the registration accept message includes the first information.
Accordingly, the terminal device receives the registration acceptance message from the AMF node. After the NAS secure connection between the terminal device and the network is established, the AMF node sends the first information to the terminal device in a registration accept message, so that the security of the first information can be ensured. After receiving the first information, the terminal equipment can determine the first identification information, so that the terminal equipment can request the MBMS service according to the first identification information.
S960, the terminal equipment sends a registration completion message to the AMF node.
Accordingly, the AMF node receives the registration complete message from the terminal device. Thereby completing registration of the terminal device with the first network.
According to the scheme, the AMF node can bear the first information through the registration acceptance message, so that the terminal equipment can determine the length of the first identification information according to the first information. The flexibility of network configuration can be improved. The length of the first identification information is shortened according to the actual condition of the network, so that signaling overhead can be reduced, and the resource utilization rate is improved.
Example III
The network node in the communication method shown in fig. 6 may be an SMF node. Fig. 10 is a schematic flow chart of a third embodiment of the present application.
S1010, an authentication process is carried out between the terminal equipment and the network.
And the terminal equipment performs information interaction with the AMF node to complete an authentication process between the terminal equipment and the network.
S1020, the terminal equipment sends a PDU session establishment request message to the SMF node.
Accordingly, the SMF node receives the PDU session request message from the middle terminal device. SMF node determines that terminal equipment requests to establish PDU session
S1030, the SMF node sends a PDU session establishment accept message to the terminal device, the session establishment accept message including the first information.
Accordingly, the terminal device receives the PDU session establishment acceptance message from the SMF node. The terminal device may determine the first identification information based on the first information in the PDU session establishment message. So that the terminal device can request the MBMS service according to the first identification information.
According to the scheme, the SMF node can bear the first information through the PDU session acceptance message, so that the terminal equipment can determine the length of the first identification information according to the first information. The flexibility of network configuration can be improved. The length of the first identification information is shortened according to the actual condition of the network, so that signaling overhead can be reduced, and the resource utilization rate is improved.
The method provided by the embodiment of the application is described in detail above with reference to fig. 2 to 10. The following describes in detail the apparatus provided in the embodiment of the present application with reference to fig. 11 to 13.
Fig. 11 is a schematic block diagram of a communication device provided by an embodiment of the present application. As shown in fig. 11, the communication apparatus 1100 may include a processing unit 1110 and a transceiving unit 1120.
In one possible design, the communication apparatus 1100 may correspond to a terminal device, i.e., a UE, or a chip configured in (or for) the terminal device in the above method embodiments.
It should be understood that the communication apparatus 1100 may correspond to a terminal device in the communication method provided according to the embodiment of the present application, and the communication apparatus 1100 may include units for performing a method performed by the terminal device in the methods illustrated in fig. 6, 8, 9, and 10. Each unit in the communication device 1100 and the other operations and/or functions described above are respectively for realizing the respective flows of the communication methods shown in fig. 6, 8, 9, and 10.
It should also be understood that when the communication apparatus 1100 is a chip configured (or used) in a terminal device, the transceiver unit 1120 in the communication apparatus 1100 may be an input/output interface or a circuit of the chip, and the processing unit 1110 in the communication apparatus 1100 may be a processor in the chip.
Optionally, the communication device 1100 may further comprise a processing unit 1110, which processing unit 1110 may be adapted to process instructions or data to achieve corresponding operations.
Optionally, the communication apparatus 1100 may further include a storage unit 1130, where the storage unit 1130 may be used to store instructions or data, and the processing unit 1110 may execute the instructions or data stored in the storage unit, so as to enable the communication apparatus to implement a corresponding operation, where the transceiver unit 1120 in the communication apparatus 1100 may correspond to the transceiver 1210 in the terminal device 1200 shown in fig. 12, and the storage unit 1130 may correspond to the memory in the terminal device 1200 shown in fig. 12.
It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.
It should be further understood that, when the communication apparatus 1100 is a terminal device, the transceiver unit 1120 in the communication apparatus 1100 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 1210 in the terminal device 1200 shown in fig. 12, the processing unit 1110 in the communication apparatus 1100 may be implemented through at least one processor, for example, may correspond to the processor 1220 in the terminal device 1200 shown in fig. 12, and the processing unit 1110 in the communication apparatus 1100 may be implemented through at least one logic circuit.
In another possible design, the communication device 1100 may correspond to a network node in the above method embodiments, e.g., or a chip configured in (or for) the network node.
It is to be understood that the communication device 1100 may correspond to a network node in a communication method according to an embodiment of the present application, and the communication device 1100 may include means for performing the method performed by the network node in the methods shown in fig. 6, 8, 9, 10. Each unit in the communication device 1100 and the other operations and/or functions described above are respectively for implementing the respective flows of the methods shown in fig. 6, 8, 9, and 10.
It should also be understood that when the communication device 1100 is a chip configured (or used) in a network node, the transceiver unit in the communication device 1100 is an input/output interface or circuit in the chip, and the processing unit 1110 in the communication device 1100 may be a processor in the chip.
Optionally, the communication device 1100 may further comprise a processing unit 1110, which processing unit 1110 may be adapted to process instructions or data to achieve corresponding operations.
Optionally, the communication device 1100 may further include a storage unit 1130, which may be used to store instructions or data, and the processing unit may execute the instructions or data stored in the storage unit 1130, so as to enable the communication device to perform corresponding operations. The storage unit 1130 in the communication apparatus 1100 is a memory that can correspond to the network node 1300 shown in fig. 13.
It should be understood that the specific process of each unit performing the corresponding steps has been described in detail in the above method embodiments, and is not described herein for brevity.
It should also be appreciated that when the communication apparatus 1100 is a network node, the transceiver unit 1120 in the communication apparatus 1100 may be implemented through a communication interface (such as a transceiver or an input/output interface), for example, may correspond to the transceiver 1310 in the network node 1300 shown in fig. 13, the processing unit 1110 in the communication apparatus 1100 may be implemented through at least one processor, for example, may correspond to the processor 1320 in the network device 1300 shown in fig. 13, and the processing unit 1110 in the communication apparatus 1100 may be implemented through at least one logic circuit.
Fig. 12 is a schematic structural diagram of a terminal device 1200 according to an embodiment of the present application. The terminal device 1200 may be applied to the system shown in fig. 1, and perform the functions of the terminal device in the above-described method embodiment. As shown, the terminal device 1200 includes a processor 1220 and a transceiver 1210. Optionally, the terminal device 1200 further comprises a memory. Wherein the processor 1220, the transceiver 1210 and the memory can communicate with each other through an internal connection path to transfer control and/or data signals, the memory is used for storing a computer program, and the processor 1220 is used for executing the computer program in the memory to control the transceiver 1210 to transmit and receive signals.
The processor 1220 and the memory may be combined into one processing device, and the processor 1220 is configured to execute the program codes stored in the memory to implement the functions. In particular, the memory may also be integrated within processor 1220 or separate from processor 1220. The processor 1220 may correspond to the processing unit in fig. 11.
The transceiver 1210 may correspond to the transceiver unit in fig. 11. The transceiver 1210 may include a receiver (or receiver, receiving circuitry) and a transmitter (or transmitter, transmitting circuitry). Wherein the receiver is for receiving signals and the transmitter is for transmitting signals.
It should be understood that the terminal device 1200 shown in fig. 12 is capable of implementing the respective procedures of the terminal device involved in the methods shown in fig. 6, 8, 9, and 10. The operations and/or functions of the respective modules in the terminal device 1200 are respectively for implementing the corresponding flows in the above-described method embodiment. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.
The above-described processor 1220 may be used to perform the actions described in the previous method embodiments as being performed internally by the terminal device, while the transceiver 1210 may be used to perform the actions described in the previous method embodiments as being transmitted to or received from the network node by the terminal device. Please refer to the description of the foregoing method embodiments, and details are not repeated herein.
Optionally, the terminal device 1200 may further include a power source for providing power to various devices or circuits in the terminal device.
In addition, in order to make the functions of the terminal device more complete, the terminal device 1200 may further include one or more of an input unit, a display unit, an audio circuit, a camera, a sensor, and the like, and the audio circuit may further include a speaker, a microphone, and the like.
Fig. 13 is a schematic structural diagram of a network device according to an embodiment of the present application, where the network device 1300 may be applied to the system shown in fig. 1 to perform the functions of the network device in the foregoing method embodiment. As shown, the network device 1300 includes a processor 1320 and a transceiver 1310. Optionally, the network device 1300 also includes a memory. Wherein the processor 1320, the transceiver 1310 and the memory can communicate with each other via an internal connection path to transfer control and/or data signals, the memory is used for storing a computer program, and the processor 1320 is used for executing the computer program in the memory to control the transceiver 1310 to transmit and receive signals.
It should be appreciated that the network device 1300 shown in fig. 13 is capable of implementing the methods shown in fig. 6, 8, 9, and 10 in relation to the various processes of the network device. The operations and/or functions of the respective modules in the network device 1300 are respectively for implementing the corresponding flows in the above-described method embodiments. Reference is specifically made to the description in the above method embodiments, and detailed descriptions are omitted here as appropriate to avoid repetition.
It should be understood that the network device 1300 shown in fig. 13 is only one possible architecture of a network device, and should not be construed as limiting the application in any way. The method provided by the application can be applied to network equipment with other architectures. For example, network devices including CUs, DUs, and AAUs, etc. The application is not limited to the specific architecture of the network device.
The embodiment of the application also provides a processing device, which comprises a processor and an interface; the processor is configured to perform the method of any of the method embodiments described above.
It should be understood that the processing means described above may be one or more chips. For example, the processing device may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.
In implementation, the steps of the above method may be performed by integrated logic circuits of hardware in a processor or by instructions in the form of software. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in the processor for execution. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.
It should be noted that the processor in the embodiments of the present application may be an integrated circuit chip with signal processing capability. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may be a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete gate or transistor logic, or discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present application may be embodied directly in the execution of a hardware decoding processor, or in the execution of a combination of hardware and software modules in a decoding processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.
It will be appreciated that the memory in embodiments of the application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.
The method provided by the embodiment of the application further provides a computer program product, which comprises: computer program code which, when executed by one or more processors, causes an apparatus comprising the processor to perform the method in the above-described embodiments.
According to the method provided by the embodiment of the application, the application further provides a computer readable storage medium, wherein the computer readable storage medium stores program code, and when the program code is executed by one or more processors, the program code causes an apparatus comprising the processor to execute the method in the embodiment.
According to the method provided by the embodiment of the application, the application further provides a system which comprises one or more network devices. The system may further comprise one or more of the terminal devices described above.
In the several embodiments provided by the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules is merely a logical function division, and there may be additional divisions of actual implementation, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not implemented. Alternatively, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, indirect coupling or communication connection of modules, electrical, mechanical, or other forms.
In the specific implementation of the terminal device and the network device, it should be understood that the processor may be a central processing unit (in english: central Processing Unit, abbreviated as CPU), or may be other general purpose processors, digital signal processors (in english: digital Signal Processor, abbreviated as DSP), application specific integrated circuits (in english: application Specific Integrated Circuit, abbreviated as ASIC), or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution.
All or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a readable memory. The program, when executed, performs steps including the method embodiments described above; and the aforementioned memory (storage medium) includes: read-only memory (ROM), RAM, flash memory, hard disk, solid state disk, magnetic tape, floppy disk, optical disk, and any combination thereof.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (64)

  1. A method of communication, the method comprising:
    the method comprises the steps that a terminal device receives first information, wherein the first information is used for indicating the length of first identification information, and the first identification information is used for requesting a multimedia broadcast multicast service by the terminal device;
    the terminal equipment determines at least one bit in the temporary mobile group identification information included in the first identification information and/or at least one bit in the identification information of the first network included, according to the first information, wherein the first network is a network for providing service for the terminal equipment.
  2. The method of claim 1, wherein the first information includes first indication information, the first indication information is used to indicate that the first identification information includes N digits in the temporary mobile group identification information, wherein the temporary mobile group identification includes K digits, N, K is a positive integer, and N is less than or equal to K.
  3. The method of claim 2, wherein the N-bit number is a consecutive N-bit number with an nth bit in the temporary mobile identity information as a start bit,
    wherein n is protocol specified, preconfigured or indicated by the first information, 0 < n.ltoreq.K, and n is an integer.
  4. A method according to any one of claims 1 to 3, wherein the first information comprises second indication information indicating the number of M bits in the first identification information comprising the identification information of the first network, wherein the identification information of the first network comprises the number of L bits, M, L is a positive integer, and M is L.
  5. The method of claim 4, wherein the M bits are consecutive M bits with an mth bit in the identification information of the first network as a start bit,
    wherein m is protocol-specified, preconfigured or indicated by the first information, 0 < m.ltoreq.L, and m is an integer.
  6. The method according to any one of claims 1 to 5, wherein the number of bits is the number of binary bits, the number of decimal bits or the number of hexadecimal bits.
  7. The method according to any of claims 1 to 6, wherein the first information is from an access network node.
  8. The method of claim 7, wherein the first information is carried in one or more of the following messages from the access network node:
    system messages, RRC release messages, and RRC reconfiguration messages.
  9. The method according to claim 7 or 8, wherein the terminal device receives the first information, comprising:
    and after the terminal equipment establishes the secure connection with the access network node, the first information is received.
  10. The method according to any of claims 1 to 6, wherein the first information is from an access and mobility management function, AMF, node.
  11. The method of claim 10, wherein the first information is carried in a registration accept message from the AMF node.
  12. The method according to claim 10 or 11, wherein the terminal device receives the first information, comprising:
    and after the terminal equipment establishes secure connection with the AMF node, the first information is received.
  13. A method according to any of claims 1 to 6, characterized in that the first information is from a session management function, SMF, node.
  14. The method of claim 13 wherein the first information is carried in a protocol data unit, PDU, session establishment accept message from the SMF node.
  15. The method according to any one of claims 1 to 14, wherein the first network is a non-public network.
  16. A communication method, applied to a terminal device, the method comprising:
    a first network node determines the length of first identification information, wherein the first identification information is used for a terminal device to request a multimedia broadcast multicast service, the first identification information comprises at least one bit in temporary mobile group identification information and/or at least one bit in identification information of a first network, and the first network is a network for providing service for the terminal device;
    and the first network node sends first information to the terminal equipment, wherein the first information is used for indicating the length of the first identification information.
  17. The method of claim 16, wherein the first information includes first indication information, the first indication information is used to indicate that the first identification information includes N digits in the temporary mobile group identification information, wherein the temporary mobile group identification includes K digits, N, K is a positive integer, and N is less than or equal to K.
  18. The method of claim 17, wherein the N-bit number is a consecutive N-bit number with an nth bit in the temporary mobile identity information as a start bit,
    Wherein n is protocol specified, preconfigured or indicated by the first information, 0 < n.ltoreq.K, and n is an integer.
  19. The method according to any one of claims 16 to 18, wherein the first information includes second indication information indicating a number of M bits in the first identification information included in the identification information of the first network, wherein the identification information of the first network includes a number of L bits, M, L is a positive integer, and M is L.
  20. The method of claim 19, wherein the M bits are consecutive M bits with an mth bit in the identification information of the first network as a start bit,
    wherein m is protocol-specified, preconfigured or indicated by the first information, 0 < m.ltoreq.L, and m is an integer.
  21. The method according to any one of claims 16 to 20, wherein the number of bits is the number of binary bits, the number of decimal bits or the number of hexadecimal bits.
  22. The method according to any of claims 16 to 21, wherein the first network node is an access network node of the first network.
  23. The method of claim 22, wherein the first information is carried in one or more of the following messages sent by the access network node:
    System messages, RRC release messages, and RRC reconfiguration messages.
  24. The method according to claim 22 or 23, wherein the first network node sends first information to the terminal device, comprising:
    and after the access network node establishes a secure connection with the terminal equipment, the first information is sent to the terminal equipment.
  25. The method according to any of claims 16 to 21, wherein the first network node is an access and mobility management function, AMF, node.
  26. The method of claim 25, wherein the first information is carried in a registration accept message sent by the AMF node.
  27. The method according to claim 25 or 26, wherein the first network node sending first information to the terminal device, comprising:
    and after the AMF node establishes secure connection with the terminal equipment, the first information is sent to the terminal equipment.
  28. The method according to any of the claims 16 to 21, wherein the first network node is a session management function, SMF, node.
  29. The method of claim 28 wherein the first information is carried in a protocol data unit, PDU, session establishment accept message sent by the SMF node.
  30. The method of any one of claims 16 to 29, wherein the first network is a non-public network.
  31. A communication apparatus for use in a terminal device, the apparatus comprising:
    the receiving and transmitting unit is used for receiving first information, wherein the first information is used for indicating the length of first identification information, and the first identification information is used for requesting multimedia broadcast multicast service by the terminal equipment;
    and the processing unit is used for determining at least one bit in the temporary mobile group identification information included in the first identification information and/or at least one bit in the identification information of the first network, wherein the first network is a network for providing service for the terminal equipment.
  32. The apparatus of claim 31, wherein the first information comprises first indication information, the first indication information is used to indicate that the first identification information comprises a number of N bits in the temporary mobile group identification information, wherein the temporary mobile group identification comprises a number of K bits, N, K is a positive integer, and N is less than or equal to K.
  33. The apparatus of claim 32, wherein the N-bit number is a consecutive N-bit number with an nth bit in the temporary Mobile identity information as a start bit,
    Wherein n is protocol specified, preconfigured or indicated by the first information, 0 < n.ltoreq.K, and n is an integer.
  34. The apparatus of any one of claims 31 to 33, wherein the first information includes second indication information, the second indication information is used to indicate an M number of bits in the first identification information included in the identification information of the first network, wherein the identification information of the first network includes an L number of bits, M, L is a positive integer, and M is L.
  35. The apparatus of claim 34, wherein the M bits are consecutive M bits with an mth bit in the identification information of the first network as a start bit,
    wherein m is protocol-specified, preconfigured or indicated by the first information, 0 < m.ltoreq.L, and m is an integer.
  36. The apparatus of any one of claims 31 to 35, wherein the number of bits is a number of binary bits, a number of decimal bits, or a number of hexadecimal bits.
  37. The apparatus according to any of claims 31 to 36, wherein the first information is from an access network node.
  38. The apparatus of claim 37, wherein the first information is carried in one or more of the following messages from the access network node:
    System messages, RRC release messages, and RRC reconfiguration messages.
  39. The apparatus of claim 37 or 38, wherein the device comprises a plurality of sensors,
    the transceiver unit is specifically configured to receive the first information after the terminal device establishes a secure connection with the access network node.
  40. The apparatus according to any of claims 31 to 36, wherein the first information is from an access and mobility management function, AMF, node.
  41. The apparatus of claim 37, wherein the first information is carried in a registration accept message from the AMF node.
  42. The apparatus of claim 40 or 41, wherein the device comprises,
    the transceiver unit is specifically configured to receive the first information after the terminal device establishes a secure connection with the AMF node.
  43. The apparatus according to any of claims 31 to 36, wherein the first information is from a session management function, SMF, node.
  44. The apparatus of claim 43, wherein the first information is carried in a protocol data unit, PDU, session establishment accept message from the SMF node.
  45. The apparatus of any one of claims 31 to 44, wherein the first network is a non-public network.
  46. A communication device, comprising:
    a processing unit, configured to determine a length of first identification information, where the first identification information is used for a terminal device to request a multimedia broadcast multicast service, the first identification information includes at least one bit in temporary mobile group identification information and/or at least one bit in identification information of a first network, and the first network is a network that provides services for the terminal device;
    and the receiving and transmitting unit is used for transmitting first information to the terminal equipment, wherein the first information is used for indicating the length of the first identification information.
  47. The apparatus of claim 46, wherein the first information comprises first indication information indicating a number of N bits in the first identification information included in the temporary mobile group identification information, wherein the temporary mobile group identification includes a number of K bits, N, K is a positive integer, and N is less than or equal to K.
  48. The apparatus of claim 47, wherein the N-bit number is a consecutive N-bit number with an nth bit in the temporary Mobile identity information as a start bit,
    wherein n is protocol specified, preconfigured or indicated by the first information, 0 < n.ltoreq.K, and n is an integer.
  49. The apparatus of any one of claims 46 to 48, wherein the first information includes second indication information indicating a number of M bits in the first identification information included in the identification information of the first network, wherein the identification information of the first network includes a number of L bits, M, L is a positive integer, and M is L.
  50. The apparatus of claim 49, wherein the M bits are consecutive M bits with an mth bit in the identification information of the first network as a start bit,
    wherein m is protocol-specified, preconfigured or indicated by the first information, 0 < m.ltoreq.L, and m is an integer.
  51. The apparatus of any one of claims 46 to 50, wherein the number of bits is a number of binary bits, a number of decimal bits, or a number of hexadecimal bits.
  52. The apparatus according to any one of claims 46 to 51, wherein the first network node is an access network node of the first network.
  53. The apparatus of claim 52, wherein the first information is carried in one or more of the following messages sent by the access network node:
    System messages, RRC release messages, and RRC reconfiguration messages.
  54. The apparatus of claim 52 or 53, wherein the device comprises,
    the transceiver unit is specifically configured to send the first information to the terminal device after the access network node establishes a secure connection with the terminal device.
  55. The apparatus according to any of claims 46 to 51, wherein the first network node is an access and mobility management function, AMF, node.
  56. The apparatus of claim 55, wherein the first information is carried in a registration accept message sent by the AMF node.
  57. The apparatus of claim 55 or 56, wherein the device comprises,
    the transceiver unit is specifically configured to send the first information to the terminal device after the AMF node establishes a secure connection with the terminal device.
  58. The apparatus according to any of claims 46 to 51, wherein the first network node is a session management function, SMF, node.
  59. The apparatus of claim 58 wherein the first information is carried in a protocol data unit, PDU, session establishment accept message sent by the SMF node.
  60. The apparatus of any one of claims 46 to 59, wherein the first network is a non-public network.
  61. A communication device, comprising:
    the device comprises a processor, a memory and an interface for communicating with the terminal equipment;
    the memory stores computer-executable instructions;
    the processor executing computer-executable instructions stored in the memory causing the processor to perform the communication method of any one of claims 1 to 30.
  62. A computer-readable storage medium comprising a computer program which, when executed by one or more processors, causes an apparatus comprising the processor to perform the method of any of claims 1 to 30.
  63. A computer program product, the computer program product comprising: computer program which, when executed, causes a computer to perform the method of any one of claims 1 to 30.
  64. A chip comprising at least one processor and a communication interface;
    the communication interface is for receiving signals input to or output from the chip, and the processor is in communication with the communication interface and is configured to implement the method of any one of claims 1 to 30 by logic circuitry or execution of code instructions.
CN202180079837.8A 2021-01-19 2021-01-19 Communication method, device and storage medium Pending CN116615920A (en)

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US20210219355A1 (en) * 2018-05-10 2021-07-15 Telefonaktiebolaget Lm Ericsson (Publ) Managing Extended 5G-S-TMSI in LTE Connected to 5GC
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