WO2022233197A1 - 通信方法及通信装置 - Google Patents
通信方法及通信装置 Download PDFInfo
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- WO2022233197A1 WO2022233197A1 PCT/CN2022/082880 CN2022082880W WO2022233197A1 WO 2022233197 A1 WO2022233197 A1 WO 2022233197A1 CN 2022082880 W CN2022082880 W CN 2022082880W WO 2022233197 A1 WO2022233197 A1 WO 2022233197A1
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- system information
- information block
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- 238000000034 method Methods 0.000 title claims abstract description 97
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- 230000007774 longterm Effects 0.000 description 2
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- 101150039363 SIB2 gene Proteins 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
- H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/06—Authentication
- H04W12/069—Authentication using certificates or pre-shared keys
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/08—Access security
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W48/00—Access restriction; Network selection; Access point selection
- H04W48/16—Discovering, processing access restriction or access information
Definitions
- the present application relates to the field of communication technologies, and in particular, to a communication method and a communication device.
- 5G 5th generation mobile networks
- MOCN operator core network
- 5G base station and frequency resource sharing For example, China Unicom and China Telecom jointly build a shared 5G network, that is, a base station/cell supports both China Unicom's network and China Telecom's network.
- a sharing method in which a base station/cell is shared by multiple networks can be called access network (Radio Access Network, RAN) sharing.
- RAN Radio Access Network
- the system information block 1 of the cell can usually include each SNPN that supports external authentication.
- the identifiers of the overlapping groups will appear repeatedly in the broadcast message (ie, system information block 1) of the cell. Since the group identifier occupies a large number of bits (for example, 68 bits), repeatedly including the group identifier will cause the broadcast message of the cell to contain a large amount of redundant information. Therefore, how to reduce the data amount of the cell broadcast system information has become one of the problems to be solved urgently at present.
- the present application provides a communication method and a communication device, which reduce the data amount of cell broadcast system information.
- the present application provides a communication method, the method includes: an access network device determines a first system information block of a cell, where the first system information block includes information of n networks, wherein the information of one network includes The identifier of the network and the first indication information corresponding to the network, where the first indication information is used to instruct the network to support the terminal device to use the certificate of the certificate holder to access.
- the access network device determines a second system information block of the cell, where the second system information block includes identifications of m certificate holder groups and n bitmaps, and the n bitmaps are the same as the
- the identifiers of the n networks included in the first system information block are in one-to-one correspondence, and each bitmap is used to indicate a certificate holder group supported by the corresponding network, and each bitmap includes m bits, the m bits are in one-to-one correspondence with the identifiers of the m certificate holder groups, and each bit is used to indicate whether the corresponding network supports the certificate holding corresponding to the bit. group, m and n are integers greater than 0.
- the access network device sends the first system information block and the second system information block to the terminal device.
- the first system information block includes the identifiers of all networks (such as SNPNs) supported by the cell
- the second system information block includes identifiers (each group) supported by all the SNPNs supported by the cell.
- the identifier of the SNPN is included only once), and includes several bitmaps, each bitmap is used to indicate a group supported by an SNPN that supports external authentication.
- several bitmaps included in the second system information block correspond one-to-one with the identifiers of the SNPNs supporting external authentication included in the first system information block, and the bits included in each bitmap correspond to the first system information block.
- the SNPN and group information can be implicitly associated, so as to avoid adding extra bits in the system information block (such as the first system information block or the second system information block) to indicate the Correspondence between each bitmap and each SNPN in the first system information block that supports external authentication, and avoid adding extra bits in the system information block (such as the first system information block or the second system information block) to indicate
- the correspondence between each bit in the bitmap and each group identifier reduces the data amount of the cell broadcast system information and saves transmission resources.
- the first system information block is system information block 1 .
- the second system information block is another system information block except the system information block 1 .
- the second system information block when the second system information block is other than the system information block 1, the second system information block can be broadcast on demand or sent by unicast, so the amount of cell broadcast can be reduced, saving transfer resources.
- the second system information block further includes second indication information; the second indication information is used to indicate whether to use a bitmap to instruct the terminal device to use the certificate holder's The certificate holder group supported by the network to which the certificate is accessed;
- the second system information block includes identifications of m certificate holder groups and n bitmaps, specifically:
- the second system information block includes: The identifications of the m certificate holder groups and the n bitmaps.
- the groups supported by different SNPNs have many overlaps
- the groups supported by each network are indicated by a bitmap, which can reduce the amount of data broadcast by the cell, and by adding the second indication information, This enables the UE to identify which method is used by the cell to indicate the group supported by the network supporting external authentication, so that the content of the broadcast message can be correctly parsed, and the reliability of communication is improved.
- the second system information block includes the identification of the certificate holder group supported by each of the n networks.
- the groups supported by each network can be indicated by directly indicating the identifiers of the groups supported by each network, which can reduce cell broadcast. and by adding the second indication information, the UE can identify which method is used by the cell to indicate the group supported by the network that supports external authentication, so that the content of the broadcast message can be correctly parsed, and the reliability of the communication is improved. sex.
- the network is an independent non-public network SNPN.
- the present application provides a communication method, the method comprising: a terminal device receiving a first system information block and a second system information block from an access network device, where the first system information block includes n network information, wherein the information of one network includes the identifier of the network and the first indication information corresponding to the network, and the first indication information is used to instruct the network to support the terminal device to use the certificate holder's certificate to access,
- the second system information block includes identifications of m certificate holder groups and n bitmaps, and the n bitmaps are the same as those of the n networks included in the first system information block.
- the identifiers are in one-to-one correspondence, and each bitmap is used to indicate the certificate holder group supported by the corresponding network, and each bitmap includes m bits, and the m bits are the same as the m bits.
- the identifiers of the certificate holder groups are in one-to-one correspondence, each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the bit, and m and n are integers greater than 0.
- the terminal device performs network selection according to the first system information block and the second system information block.
- the first system information block is system information block 1 .
- the second system information block is another system information block except the system information block 1 .
- the second system information block further includes second indication information; the second indication information is used to indicate whether to use a bitmap to instruct the terminal device to use the certificate holder's The certificate holder group supported by the network to which the certificate is accessed;
- the second system information block includes identifications of m certificate holder groups and n bitmaps, specifically:
- the second system information block includes: The identifications of the m certificate holder groups and the n bitmaps.
- the second system information block includes the identification of the certificate holder group supported by each of the n networks.
- the network is an independent non-public network SNPN.
- the present application provides a communication method, the method includes: an access network device determines a system information block of a cell, where the system information block includes information of n networks and identifiers of m certificate holder groups and k bitmaps, wherein the information of one network includes the identifier of the network and the first indication information corresponding to the network, and the first indication information is used to instruct the network to support the terminal device to use the certificate holder's
- the certificate is accessed, and a bitmap is used to indicate the certificate holder group supported by a corresponding network, and each bitmap includes m bits, and the m bits are associated with the m certificates.
- the identifiers of the owner groups are in one-to-one correspondence, each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the bit, m and n are integers greater than 0, and k is less than or An integer equal to n.
- the access network device sends the system information block to the terminal device.
- the first system information block of a cell includes the identifiers of the groups supported by all networks (eg SNPN) in the cell (the identifier of each group is only included once), and also includes several bitmaps for to indicate the groups supported by each SNPN that supports external authentication.
- the bits included in each bitmap are in one-to-one correspondence with the identifiers of each group included in the first system information block. Due to the large number of digits in the group identifier, the group supported by the SNPN supporting external authentication can be indicated by means of a bitmap, which can avoid the repeated appearance of the same group identifier in the first system information block, thus reducing the number of cell broadcasts.
- the data amount of system information ie, the size of the first system information block is reduced.
- the bitmap can be implicitly associated with the group ID, so as to avoid adding extra bits in the system information block to indicate that each bit in the bitmap is related to the group ID.
- the correspondence between each group identifier reduces the data amount of the cell broadcast system information and saves transmission resources.
- system information block is system information block 1 .
- the network is an independent non-public network SNPN.
- the present application provides a communication method, the method comprising: a terminal device receiving a system information block from an access network device, where the system information block includes information of n networks and m certificate holder groups and k bitmaps, wherein the information of one network includes the identity of the network and the first indication information corresponding to the network, and the first indication information is used to instruct the network to support the terminal device using the certificate holding
- a bitmap is used to indicate the certificate holder group supported by a corresponding network, and each bitmap includes m bits, and the m bits are the same as the m bits.
- the identifiers of the certificate holder groups are in one-to-one correspondence, each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the bit, m and n are integers greater than 0, and k is An integer less than or equal to n.
- the terminal device performs network selection according to the system information block.
- system information block is system information block 1 .
- the network is an independent non-public network SNPN.
- the present application provides a communication apparatus, the communication apparatus is an access network device, and the apparatus includes: a processing unit configured to determine a first system information block of a cell, where the first system information block includes n information of two networks, wherein the information of one network includes the identifier of the network and the first indication information corresponding to the network, and the first indication information is used to instruct the network to support the terminal device using the certificate of the certificate holder to perform access.
- a processing unit configured to determine a first system information block of a cell, where the first system information block includes n information of two networks, wherein the information of one network includes the identifier of the network and the first indication information corresponding to the network, and the first indication information is used to instruct the network to support the terminal device using the certificate of the certificate holder to perform access.
- the processing unit is configured to determine a second system information block of the cell, where the second system information block includes identifications of m certificate holder groups and n bitmaps, the n bitmaps One-to-one correspondence with the identifiers of the n networks included in the first system information block, each bitmap is used to indicate the certificate holder group supported by the corresponding network, and each bitmap is used to indicate the certificate holder group supported by the corresponding network.
- the bitmap includes m bits, and the m bits are in one-to-one correspondence with the identifiers of the m certificate holder groups, and each bit is used to indicate whether the corresponding network supports the corresponding Certificate holder group, m and n are integers greater than 0.
- a transceiver unit configured to send the first system information block and the second system information block to a terminal device.
- the first system information block is system information block 1 .
- the second system information block is another system information block except the system information block 1 .
- the second system information block further includes second indication information; the second indication information is used to indicate whether to use a bitmap to instruct the terminal device to use the certificate holder's The certificate holder group supported by the network to which the certificate is accessed;
- the second system information block includes identifications of m certificate holder groups and n bitmaps, specifically:
- the second system information block includes: The identifications of the m certificate holder groups and the n bitmaps.
- the second system information block includes the identification of the certificate holder group supported by each of the n networks.
- the network is an independent non-public network SNPN.
- the present application provides a communication device, the communication device is a terminal device, the device includes: a transceiver unit, configured to receive a first system information block and a second system information block from an access network device, the The first system information block includes information of n networks, wherein the information of one network includes the identification of the network and the first indication information corresponding to the network, and the first indication information is used to indicate that the network supports the terminal device.
- the second system information block includes the identification of m certificate holder groups and n bitmaps, the n bitmaps and the first system information
- the identifiers of the n networks included in the block are in one-to-one correspondence, each bitmap is used to indicate the certificate holder group supported by the corresponding network, and each bitmap includes m bits , the m bits are in one-to-one correspondence with the identifiers of the m certificate holder groups, and each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the bit, m and n are integers greater than 0.
- the processing unit is configured to perform network selection according to the first system information block and the second system information block.
- the first system information block is system information block 1 .
- the second system information block is another system information block except the system information block 1 .
- the second system information block further includes second indication information; the second indication information is used to indicate whether to use a bitmap to instruct the terminal device to use the certificate holder's The certificate holder group supported by the network to which the certificate is accessed;
- the second system information block includes identifications of m certificate holder groups and n bitmaps, specifically:
- the second system information block includes: The identifications of the m certificate holder groups and the n bitmaps.
- the second system information block includes the identification of the certificate holder group supported by each of the n networks.
- the network is an independent non-public network SNPN.
- the present application provides a communication apparatus, the communication apparatus is an access network device, and the apparatus includes: a processing unit configured to determine a system information block of a cell, where the system information block includes information of n networks , identifications of m certificate holder groups and k bitmaps, wherein the information of one network includes the identification of the network and the first indication information corresponding to the network, and the first indication information is used to indicate the
- the network supports terminal equipment to access using the certificate of the certificate holder, a bitmap is used to indicate the certificate holder group supported by a corresponding network, and each bitmap includes m bits, the The m bits are in one-to-one correspondence with the identifiers of the m certificate holder groups, each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the bit, m and n is an integer greater than 0, and k is an integer less than or equal to n.
- the transceiver unit is used for sending the system information block to the terminal device.
- system information block is system information block 1 .
- the network is an independent non-public network SNPN.
- the present application provides a communication apparatus, the communication apparatus is a terminal device, and the apparatus includes: a transceiver unit configured to receive a system information block from an access network device, where the system information block includes n networks information, the identifiers of m certificate holder groups, and k bitmaps, where the information of one network includes the identifier of the network and the first indication information corresponding to the network, and the first indication information is used for Instructing the network to support the terminal device to use the certificate of the certificate holder to access, a bitmap is used to indicate the certificate holder group supported by a corresponding network, and each bitmap includes m bits, The m bits are in one-to-one correspondence with the identifiers of the m certificate holder groups, and each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the bit, m and n is an integer greater than 0, and k is an integer less than or equal to n.
- the processing unit is configured to perform network selection according to the system information
- system information block is system information block 1 .
- the network is an independent non-public network SNPN.
- the present application provides a communication device, and the device may be an access network device, a device in an access network device, or a device that can be matched and used with the access network device.
- the communication device may also be a chip system.
- the communication device may perform the method described in the first aspect or the third aspect.
- the functions of the communication device may be implemented by hardware, or by executing corresponding software by hardware.
- the hardware or software includes one or more units or modules corresponding to the above functions.
- the unit or module may be software and/or hardware.
- the present application provides a communication apparatus, and the apparatus may be a terminal device, a device in a terminal device, or a device that can be matched and used with the terminal device.
- the communication device may also be a chip system.
- the communication device may perform the method of the second aspect or the fourth aspect.
- the functions of the communication device may be implemented by hardware, or by executing corresponding software by hardware.
- the hardware or software includes one or more units or modules corresponding to the above functions.
- the unit or module may be software and/or hardware.
- the present application provides a communication device, the communication device includes a processor and a transceiver, the processor and the transceiver are configured to execute computer programs or instructions stored in at least one memory, so that all The apparatus implements the method according to any one of the first to fourth aspects.
- the present application provides a communication device, the communication device includes a processor, a transceiver, and a memory, and the processor, the transceiver, and the memory are coupled; the processor and the transceiver are used to implement the first to fourth aspects. any method.
- the present application provides a computer-readable storage medium, in which a computer program or instruction is stored, and when the computer program or instruction is executed by a computer, any one of the first to fourth aspects is implemented. Methods.
- the present application provides a computer program product including instructions, the computer program product includes computer program code, and when the computer program code is run on a computer, to implement any one of the first to fourth aspects item method.
- FIG. 1 is a schematic diagram of the architecture of a communication system
- Fig. 2 is a schematic diagram of the system information block 1 of the cell
- Fig. 3 is another schematic diagram of the system information block 1 of the cell
- FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application.
- FIG. 5 is a schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- FIG. 6 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- FIG. 7 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- FIG. 8 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- FIG. 9 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- FIG. 10 is a schematic flowchart of network selection performed by a terminal device according to an embodiment of the present application.
- FIG. 11 is another schematic flowchart of a communication method provided by an embodiment of the present application.
- FIG. 12 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- FIG. 13 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- FIG. 14 is another schematic flowchart of network selection performed by a terminal device according to an embodiment of the present application.
- FIG. 15 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
- FIG. 16 is a schematic structural diagram of another communication device provided by an embodiment of the present application.
- FIG. 17 is another schematic flowchart of a communication method provided by an embodiment of the present application.
- GSM global system of mobile communication
- CDMA code division multiple access
- WCDMA wideband code division multiple access
- general packet radio service general packet radio service
- GPRS general packet radio service
- long term evolution long term evolution
- LTE long term evolution
- LTE frequency division duplex frequency division duplex
- TDD time division duplex
- UMTS universal mobile telecommunication system
- WiMAX worldwide interoperability for microwave access
- 5G 5th generation
- NR new radio
- the communication system 100 mainly includes terminal equipment (user equipment, UE) 101, access network (access network, AN) equipment 102, access and mobility management function (access and mobility management function, AMF) Entity 103, session management function (session management function, SMF) entity 104, user plane function (user plane function, UPF) entity 105, SNPN policy control function (policy control function, vPCF) entity 106, unified data management (unified data) management, UDM) entity 107, data network (DN) 108, application function (application function, AF) entity 109, authentication server function (authentication server function, AUSF) entity 110, network slice selection function (network slice selection) function, NSSF) entity 111, policy control function (policy control function, hPCF) entity 112 of the certificate holder.
- terminal equipment user equipment
- UE access network
- AN access network
- AMF access and mobility management function
- AMF access and mobility management function
- AMF session management function
- SMF session management function
- user plane function
- the UDM entity 107 is the subscription database in the core network, stores the subscription data of the user in the 5G network, and is responsible for the user's authentication and authentication related functions, specifically: authentication credential processing, user identity processing, subscription Information management, access authorization, etc.
- the AMF entity 103 provides mobility management functions in the core network and is mainly responsible for access and mobility control, including registration management (RM) and connection management (CM), access authentication and access authorization, Reachability management and mobility management, etc.
- the SMF entity 104 is a session management function in the core network, and the AMF entity 103 is responsible for forwarding the relevant messages from the session management between the UE 101 and the SMF entity 104 in addition to the mobility management for the UE 101.
- the PCF entity 106 is a policy management function in the core network, and is responsible for formulating policies related to mobility management, session management, and charging of the UE 101.
- the UPF entity 105 is the user plane function in the core network. It performs data transmission with the external data network through the N6 interface, and performs data transmission with the AN device 102 through the N3 interface. It mainly provides user plane support, including PDU sessions and data network connection points, Packet routing and forwarding, packet inspection and user plane policy enforcement, handling of QoS for the user plane, downlink packet buffering and triggering of downlink data notifications, etc.
- the UE 101 After the UE 101 accesses the 5G network through the Uu port, under the control of the SMF entity 104, it records the protocol data unit (protocol data unit, PDU) session data connection between the UE 101 and the UPF entity 105, so as to perform data transmission.
- the AMF entity 103 and the SMF entity 104 obtain user subscription data from the UDM entity 107 through the N8 and N10 interfaces, respectively, and obtain policy data from the PCF entity 106 through the N15 and N7 interfaces.
- AUSF110 is mainly responsible for providing security-related functions, such as: authentication, authentication, etc.
- the UE 101 performs an access stratum connection with the AN device 102 through the Uu interface to exchange access stratum messages and wireless data transmission, and the UE 101 communicates with the AMF entity 103 through the N1 interface for non-access stratum (non-access stratum) stratum, NAS) to exchange NAS messages;
- the AN device 102 is connected to the AMF entity 103 through the N2 interface, and the AN device 102 is connected to the UPF entity 105 through the N3 interface; multiple UPF entities 105 are connected through the N9 interface, and the UPF entity 105 is connected with DN 108 through N6 interface, and at the same time, UPF entity 105 is connected with SMF entity 104 through N4 interface;
- SMF entity 104 is connected with PCF entity 106 through N7 interface, SMF entity 104 is connected with UDM entity 107 through N10 interface, SMF entity 104
- the UPF entity 105 is controlled through the N4 interface, and at the same time, the SMF entity 104 is connected
- the N12 interface is connected to the AUSF entity 110, the AMF entity 103 is connected to the NSSF entity 111 through the N22 interface, and at the same time, the AMF entity 103 is connected to the PCF entity 106 through the N15 interface; the PCF entity 106 is connected to the AF entity 109 through the N5 interface;
- the N13 interface is connected to the UDM entity 107; the policy control function (vPCF) entity 106 of the SNPN is connected to the policy control function (hPCF) entity 112 of the certificate holder through the N24 interface, wherein the access network (access network, AN) device 102, AMF entity 103, SMF entity 104, UPF entity 105, vPCF 106, DN108, AF entity 109, NSSF entity 111 are the network elements of the SNPN accessed by the terminal device UE101, and the SNPN is the SNPN network ;
- NEF network exposure function
- FIG. 1 is only an exemplary architecture diagram, in addition to the functional units shown in FIG. 1 , the network architecture may further include other functional units or functional network elements, which are not limited in this embodiment of the present application.
- the above-mentioned functional units of the core network can work independently, or can be combined together to implement some control functions, such as: AMF, SMF and PCF can be combined together as a management device for completing the access authentication of the terminal device. , security encryption, location registration and other access control and mobility management functions, as well as session management functions such as recording, releasing, and changing user plane transmission paths, as well as analyzing some slice-related data (such as congestion), terminal device-related data
- UPF mainly completes functions such as routing and forwarding of user plane data, such as: responsible for data packet filtering, data transmission/forwarding, rate control, and generation of billing information for terminal devices.
- the MOCN sharing cooperation method is adopted between different operators, that is, each operator independently builds its own core network, 5G base station and frequency resource sharing.
- China Unicom and China Telecom jointly build a shared 5G network, that is, a base station supports both China Unicom's network and China Telecom's network.
- RAN sharing a sharing manner in which one access network device/cell is shared by multiple networks (or in other words, one access network device/cell supports multiple networks) can be called RAN sharing.
- a base station/cell is shared by PLMN1, PLMN2, PLMN3, SNPN1, SNPN2 (or, the base station/cell supports PLMN1, PLMN2, PLMN3, SNPN1, SNPN2).
- non-public network may also be referred to as a private network, which is a network corresponding to a PLMN (also referred to as a public network).
- NPN can be used for non-public purposes. For example, internal networks built in factories, schools, and commercial areas are all private networks.
- NPN can be divided into two types: independent NPN (ie SNPN) and public network integrated NPN (public network integrated NPN, PNI-NPN).
- independent NPN ie SNPN
- PNI-NPN public network integrated NPN
- SNPN does not depend on the function of the public network
- PNI-NPN needs to depend on the function of the public network.
- SNPN ID network identifier
- the PLMN ID can be a private network dedicated PLMN ID (for example, some PLMN IDs are reserved by the ITU for private network use), or it can be a PLMN ID owned by the operator (for example, the SNPN that the operator helps the enterprise build, its
- the PLMN ID can be set to the PLMN ID owned by the operator).
- NID is used to identify different SNPNs under one PLMN ID.
- the system information block 1 (system information block 1, SIB1) broadcast by the base station may include identifiers of all networks supported by the base station/cell.
- FIG. 2 is a schematic diagram of a system information block 1 of a cell.
- the SIB1 of the base station/cell may include the identifiers of these five networks, that is, the identifier of SNPN1, the identifier of SNPN2, the identifier of SNPN3, the identifier of SNPN4 and the The identity of the SNPN5.
- the SNPN may perform authentication (authentication) of the UE, or called identity verification.
- authentication authentication
- the UE has the credential of the network to which it is accessed, so the UE can use the SNPN's credential to authenticate on the SNPN.
- the external authentication means that the UE uses the certificate of the credentials holder (CH) to authenticate on the certificate holder.
- CH credentials holder
- the certificate holder involved in this application may be another network other than the SNPN, or may be an independent authentication server.
- certificate holders can form a certificate holder group (credentials holder group), each certificate holder group (for the convenience of description, abbreviated as group) of credentials holder group) (or group id for network selection (GIN)).
- group for the convenience of description, abbreviated as group
- GIN group id for network selection
- the "identity of the certificate holder group” may be referred to as the group ID of the group.
- a cell supports an SNPN and the SNPN supports external authentication
- its broadcast message will include: (1) indication information (for ease of understanding, the following embodiments of the present application are described as the first indication information), It is used to indicate that the SNPN supports the UE using the certificate holder's certificate access; (2) [Optional] The identifiers of several certificate holder groups are used to indicate the certificate holder groups supported by the SNPN. The UE selects an appropriate cell to access and performs external authentication according to the information broadcast by the cell and the certificate holder group corresponding to the certificate used by the UE.
- the UE can independently decide whether to attempt to access the SNPN for external authentication (for example, the broadcast message of a cell does not include the identity of the group) , but the cell actually supports group A.
- both UEs using the certificate of group A and UEs using the certificates of other groups can try to access the cell, but only the UEs using the certificate of group A It can be authenticated by the network.
- the information of each SNPN that supports external authentication in its broadcast message may include the first SNPN.
- An indication and [optional] the identity of the certificate holder group please refer to FIG. 3 , which is another schematic diagram of system information block 1 of a cell.
- the cell supports SNPN1-SNPN5 (or the cell is shared by SNPN1-SNPN5), wherein SIB1 includes information of SNPN1, information of SNPN2, information of SNPN3, information of SNPN4 and information of SNPN5.
- the information of SNPN1 includes the identification of SNPN1, the information of SNPN2 includes the identification of SNPN2 and the first indication information, the information of SNPN3 includes the identification of SNPN3, the first indication information and the identification of groups A, B and C, and the information of SNPN4 includes The identity of the SNPN4, the first indication information, and the identity of the groups A and B, and the information of the SNPN5 includes the identity of the SNPN5, the first indication information, and the identity of the groups B and C.
- SNPN1 does not support external authentication.
- SNPN2 supports external authentication, but does not specify which groups are supported.
- SNPN3 supports external authentication, and supports groups A, B, and C (ie, supports UE access using the credentials of group A or group B or group C).
- SNPN4 supports external authentication, and supports groups A and B (ie, supports UE access using the certificate of group A or group B).
- SNPN5 supports external authentication, and supports groups B and C (ie, supports UE access using the certificate of group B or group C).
- a UE can be divided into a non-access stratum (NAS, NAS) and an access stratum (access stratum, AS).
- NAS non-access stratum
- AS access stratum
- UE NAS is responsible for network selection
- UE AS is responsible for cell selection and reselection.
- the process for UE to select a network and a cell is as follows: Step 1, UE NAS selects a network and informs UE AS of the selected network. Step 2.
- the UE AS selects an appropriate cell in the network and initiates access in the cell.
- the system information block broadcast by the cell usually includes the first SNPN corresponding to each SNPN.
- the identifiers of the overlapping groups will appear repeatedly in the cell broadcast message. For example, in the broadcast message shown in FIG. 3 , the identification of group A appears twice, the identification of group B three times, and the identification of group C twice. Since the group identifier occupies a large number of bits (usually 68 bits), repeatedly including the group identifier will cause the cell broadcast message to include a large amount of redundant information. Therefore, how to avoid repeatedly including the group identifier in the cell broadcast message so as to reduce the amount of cell broadcast is referred to as an urgent problem to be solved at present.
- the present application proposes a communication method, which can avoid repeated appearance of the same group identifier in broadcast messages and reduce the amount of data broadcast by cells.
- FIG. 4 is a schematic flowchart of a communication method provided by an embodiment of the present application. As shown in Figure 4, the method includes the following steps S401 to S404:
- An access network device determines a first system information block of a cell.
- the access network device determines the first system information block of the cell.
- the first system information block includes information of n networks, wherein the information of each network in the n networks includes an identifier of the network and first indication information corresponding to the network, wherein the first indication information is used to indicate the network.
- the network supports access by terminal devices using the certificate holder's certificate (ie, the network supports external authentication). where n is an integer greater than 0.
- the first system information block may also include information about h networks that do not support external authentication, where the information about the h networks that do not support external authentication can be understood as:
- the information includes the identifier of the network and does not include the first indication information.
- the first system information block of a cell may include information of all networks supported by the cell (that is, information of n+h networks), wherein, all networks supported by the cell may include support for the UE to use the certificate holder.
- n networks that is, networks that support external authentication
- h networks that is, networks that do not support external authentication
- the information of a certain network includes the first indication information, it means that the network supports the UE to access using the certificate of the certificate holder (ie, supports external authentication). If the information of a certain network does not include the first indication information, it means that the network does not support access by the UE using the certificate of the certificate holder (ie, does not support external authentication).
- h is an integer greater than or equal to 0.
- the first system information block involved in the embodiments of the present application may be system information block 1 (ie SIB1), or may also be other system information blocks, which is not limited herein.
- SIB1 system information block 1
- the following embodiments of the present application all take that the first system information block is SIB1 as an example for illustrative description.
- the network involved in this application may be an SNPN, or may also be other networks (eg, PLMN), etc., which is not limited herein.
- the following embodiments of the present application all take the SNPN as an example for illustrative description.
- the identification of SNPN consists of PLMN ID and NID.
- the access network device determines the second system information block of the cell.
- the access network device determines the second system information block of the cell.
- the second system information block includes the identifications of m certificate holder groups and n bitmaps (bitmap for short), and the n bitmaps are related to the information of the n networks included in the first system information block.
- the identifiers are in one-to-one correspondence, and each bitmap is used to indicate the certificate holder group supported by the corresponding network, and each bitmap includes m bits, m bits and m certificate holder groups
- the identifiers of the groups are in one-to-one correspondence, and each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the bit, and both m and n are integers greater than 0.
- the second system information block of the cell includes the identities of the groups supported by all the SNPNs supporting external authentication in the cell (the identity of each group is only included once) and the bits corresponding to each SNPN supporting external authentication.
- Bitmap wherein, the order of the bitmap corresponding to the SNPN supporting external authentication in the second system information block (or called the order of appearance) is in turn with the order of the SNPN with the first indication information in the first system information block.
- One-to-one correspondence (so the number of bitmaps is the same as the number of SNPNs with indication information in SIB1), each bitmap is used to indicate the group supported by its corresponding SNPN, where the bitmap can be empty , or the bitmap may also include m bits.
- bitmap corresponding to a SNPN that supports external authentication when the bitmap corresponding to a SNPN that supports external authentication is empty, it means that the group supported by the SNPN is not specified.
- a bitmap corresponding to an SNPN that supports external authentication includes m bits, the m bits are in one-to-one correspondence with the group identifiers included in the second system information block (so the number of bitmaps It is the same as the number of SNPNs with the first indication information in SIB1). Each bit indicates whether the SNPN supports the group corresponding to the bit.
- the value of a bit can be set to 0 or can also be set to 1, wherein, when the value can be defined as 1, it means that the SNPN supports the group corresponding to the bit, and when the value is 0, Indicates that the SNPN does not support the group corresponding to this bit.
- it can also be defined that when the value is 1, it means that the SNPN does not support the group corresponding to the bit, and when the value is 0, it means that the SNPN supports the group corresponding to the bit, which is not done here. limit.
- the following embodiments of the present application all take a value of 1 to indicate that the SNPN supports the group corresponding to the bit, and a value of 0 to indicate that the SNPN does not support the group corresponding to the bit. illustrate.
- the second system information block involved in the embodiment of the present application is other system information block except system information block 1 (ie, SIB1), which is not limited herein.
- the second system information block may be system information block 10 (ie SIB10), or the second system information block may also be system information block 2 (ie SIB2), etc., which is not limited here.
- SIB1 system information block 1
- SIB2 system information block 2
- the following embodiments of the present application all take that the second system information block is an SIBx as an example for illustrative description. where x is not equal to 1.
- FIG. 5 is a schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- the cell is shared by SNPN1 to SNPN4.
- SIB1 ie, the first system information block
- SNPN 1, SNPN 3, and SNPN 4 carry first indication information, indicating that these SNPNs support UE access using the certificate holder's certificate
- SNPN 2 does not carry the first indication information, indicating that the SNPN2 does not support UE access using the certificate holder's certificate.
- SIBx (that is, the second system information block) includes 3 bitmaps, and these 3 bitmaps correspond to the SNPNs with indication information in SIB1 in turn, namely SNPN 1, SNPN 3, and SNPN 4.
- the first bitmap is 111, indicating that SNPN 1 supports groups A, B, and C; the second bitmap is empty, indicating that no groups are specified for SNPN 3; the third bitmap is 011, indicating that SNPN 4 supports Groups B and C.
- FIG. 6 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- the cell is shared by SNPN1 to SNPN5, wherein, in SIB1, SNPN 2, SNPN 3, SNPN 4 and SNPN 5 carry first indication information, indicating that these SNPNs support the UE to use the certificate of the certificate holder access.
- SNPN 1 does not carry the first indication information, indicating that the SNPN does not support UE access using the certificate holder's certificate.
- SIBx contains 4 bitmaps, and these 4 bitmaps correspond to SNPN 2, SNPN 3, SNPN 4 and SNPN 5 with the first indication information in SIB1 in turn.
- the first bitmap is empty, indicating which groups are not specified by SNPN 2
- the second bitmap is 111, indicating that SNPN 3 supports groups A, B, and C
- the third bitmap is 110, indicating that SNPN 4 supports groups A and B
- the fourth bitmap is 011, indicating that SNPN 5 supports groups B and C.
- the SIBx (that is, the second system information block)
- a bitmap (referred to as Scheme 1) to indicate the network supporting external authentication (that is, supporting the use of terminal equipment)
- Scheme 2 the method of directly indicating the identity of the certificate holder group supported by the network supporting external authentication
- n group identification lists may be included in SIBx, and the n group identification lists are in one-to-one correspondence with the order of the SNPNs with the first indication information in SIB1 (so the The number is the same as the number of SNPNs with the first indication information in SIB1).
- Each group identification list includes identifications of groups supported by its corresponding SNPN. If a list is empty, it means that the groups supported by the SNPN are not specified.
- FIG. 7 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- the cell is shared by SNPN1 to SNPN4.
- SIB1 ie, the first system information block
- SNPN 1, SNPN 3, and SNPN 4 carry first indication information, indicating that these SNPNs support UE access using the certificate holder's certificate
- SNPN 2 does not carry the first indication information, indicating that the SNPN2 does not support UE access using the certificate holder's certificate.
- SIBx (that is, the second system information block) includes three group identification lists, and these three group identification lists correspond to SNPN 1, SNPN 3, and SNPN 4 with the first indication information in SIB1 in turn.
- the first group identification list includes the identifications of groups A, B, and C, indicating that SNPN 1 supports groups A, B, and C; the second group identification list is empty, indicating which groups are not specified by SNPN 3;
- the third group identification list includes the identifications of groups B and C, indicating that SNPN 4 supports groups B and C.
- scenarios 1 and 2 are applicable to different scenarios.
- the method of indicating the certificate holder groups supported by the network supporting external authentication through scheme 1 requires fewer bits.
- the method of indicating the certificate holder group supported by the network supporting external authentication through scheme 2 requires fewer bits. Therefore, the cell can choose to use one of the two schemes (ie scheme 1 and scheme 2) according to different scenarios.
- an indication information (that is, the second indication information) may be added to the SIBx (that is, the second system information block) to indicate the scheme used (that is, by adding the first).
- the second indication information enables the UE to identify which scheme is used by the cell, so that the content of the broadcast message can be correctly parsed, thereby improving the reliability of communication).
- the second system information block may further include second indication information.
- the second indication information is used to indicate whether a bitmap is used to indicate the certificate holder group supported by the network that supports the terminal device to use the certificate of the certificate holder to access.
- the second system information block includes m certificate holder group identifiers and n bitmaps: if the second indication information indicates that a bitmap is used to instruct the terminal device to use the certificate holder the certificate holder group supported by the network (that is, the network that supports external authentication) for accessing the certificate, the second system information block includes the identifiers of m certificate holder groups and n bitmaps (that is, plan 1). Correspondingly, if the second indication information indicates that a bitmap is not used to indicate the certificate holder group supported by the network that supports the terminal device using the certificate holder's certificate to access, the second system information block includes: Identification of the group of certificate holders supported by each of the n networks (ie scheme 2).
- the second indication information may be of Boolean type, and the two values thereof correspond to the two schemes respectively.
- a value of 0 means using scheme 1
- a value of 1 means using scheme 2.
- the second indication information may also be an enumeration type, and different enumeration values correspond to two schemes respectively.
- a value of "scheme 1" means using scheme 1
- a value of "scheme 2” means using scheme 2.
- the second indication information may also be of a choice (Choice) type, and the two option branches correspond to two schemes respectively, etc., which is not limited herein.
- the following embodiments of the present application all take the second indication information as a Boolean type, and a value of 0 indicates that scheme 1 is used, and a value of 1 indicates that scheme 2 is used as an example for schematic illustration.
- FIG. 8 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- the cell is shared by SNPN1 to SNPN4.
- SIB1 ie, the first system information block
- SNPN 1, SNPN 3, and SNPN 4 carry first indication information, indicating that these SNPNs support UE access using the certificate holder's certificate
- SNPN 2 does not carry the first indication information, indicating that the SNPN2 does not support UE access using the certificate holder's certificate.
- SIBx (that is, the second system information block) includes second indication information, and the value of the second indication information is 0 (that is, using scheme 1), and includes 3 bitmaps, and these 3 bitmaps correspond to the SIB1 in turn.
- the first bitmap is 111, indicating that SNPN 1 supports groups A, B, and C; the second bitmap is empty, indicating that no groups are specified for SNPN 3; the third bitmap is 011, indicating that SNPN 4 supports Groups B and C.
- FIG. 9 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- the cell is shared by SNPN1 to SNPN4.
- SIB1 ie, the first system information block
- SNPN 1, SNPN 3, and SNPN 4 carry first indication information, indicating that these SNPNs support UE access using the certificate holder's certificate
- SNPN 2 does not carry the first indication information, indicating that the SNPN2 does not support UE access using the certificate holder's certificate.
- SIBx (ie, the second system information block) includes second indication information, and the value of the second indication information is 1 (ie, scheme 2 is adopted), and includes three group identification lists, and the three group identification lists are in sequence Corresponding to SNPN 1, SNPN 3, and SNPN 4 with the first indication information in SIB1.
- the first group identification list includes the identifications of groups A, B, and C, indicating that SNPN 1 supports groups A, B, and C; the second group identification list is empty, indicating which groups are not specified by SNPN 3;
- the third group identification list includes the identifications of groups B and C, indicating that SNPN 4 supports groups B and C.
- the access network device sends the first system information block and the second system information block to the terminal device.
- the access network device may send the first system information block and the second system information block to the terminal device.
- the access network equipment can send SIB1 (that is, the first system information block) to the terminal equipment in a broadcast manner, and send SIBx to the terminal equipment in an on-demand broadcast or unicast manner, where x ⁇ 1 (that is, the second system information block), which is not limited here. Therefore, the terminal device can perform network selection according to the received first system information block and the second system information block.
- the terminal device performs network selection according to the first system information block and the second system information block.
- the terminal device can perform network selection according to the first system information block and the second system information block .
- FIG. 10 is a schematic flowchart of a network selection performed by a terminal device according to an embodiment of the present application.
- the UE is divided into two layers: UE NAS and UE AS.
- the UE NAS is responsible for network selection
- the UE AS is responsible for cell selection and reselection.
- the process for the UE to select a network according to the cell system information is as follows:
- Step 1 The base station sends the first system information block and the second system information block to the UE AS.
- the first system information block includes information of several SNPNs.
- the second system information block includes information such as identifiers of several certificate holder groups and several bitmaps.
- the second system information block includes information such as second indication information, identifiers of several certificate holder groups, and several bitmaps.
- the second system information block includes second indication information, several group identification lists, and other information, which is not limited herein.
- the second system information block includes information such as identifiers of several certificate holder groups and several bitmaps as an example for illustrative description.
- Step 2 The UE AS in the UE sends information such as bitmap and SNPN information to the UE NAS.
- the UE AS in the UE receives the first system information block and the second system information block from the base station, it can parse the first system information block and the second system information block to obtain the first system information block and various information included in the second system information block. Further, part of the content (information such as bitmap and SNPN information) in the first system information block and the second system information block is sent to the UE NAS.
- Step 3 UE NAS selects the target SNPN according to information such as bitmap and SNPN information. Specifically, the UE NAS can determine which groups each SNPN supports according to the bitmap and SNPN information received from the UE NAS (that is, according to the value of each bit in the bitmap of each SNPN and the value of each bit in each bit). The corresponding group, deduce which groups the SNPN supports), and select a target SNPN according to its own preconfigured group, and the selected target SNPN supports the UE preconfigured group (that is, the UE preconfigured several groups) , if the UE AS finds that the group supported by a certain SNPN contains its own preconfigured group, the UE can select the SNPN. If the UE finds that the groups supported by multiple SNPNs contain its own preconfigured group group, the UE can select one SNPN among these SNPNs (randomly or in sequence according to a preconfigured priority)).
- Step 4 UE NAS sends information such as target SNPN and third indication information to UE AS. That is, the UE NAS may inform the UE AS of the selected target SNPN, wherein the third indication information is used to indicate that the UE AS has selected a network that supports external authentication.
- Step 5 UE AS selects a cell and initiates access. That is to say, the UE AS can select the cell of the target SNPN (that is, if the UE AS searches for a cell in one or more frequency bands, if it searches for a cell whose system information contains the identity of the target SNPN, and the signal quality of the cell is greater than a certain threshold value (the threshold value is included in the SIB1 of the cell), the UE AS selects the cell) and initiates random access in the cell.
- the threshold value is included in the SIB1 of the cell
- the SIB1 of the cell (ie the first system information block) includes the identifiers of all SNPNs in the cell
- the SIBx of the cell, x ⁇ 1 (ie the second system information block) includes the groups supported by all the SNPNs of the cell
- the identification of the group (the identification of each group is only included once), and contains several bitmaps at the same time, each bitmap is used to indicate a group supported by an SNPN.
- the SNPNs supporting external authentication are in one-to-one correspondence, and the bits included in each bitmap are in one-to-one correspondence with the identifiers of each group included in the SIB1.
- the group information (identity and bitmap of the group) is included in SIBx instead of SIB1, which can reduce the amount of cell broadcast (because the cell's SIB1 has to be broadcast all the time, and SIBx can be broadcast on demand.
- the information is included in the SIBx, and the cell can broadcast only when the UE needs to know the group information, instead of broadcasting all the time).
- the use of a bitmap to indicate the groups supported by the SNPN can reduce the number of bits required to indicate the groups supported by the SNPN in the SIBx.
- the SNPN and group information can be implicitly associated, so as to avoid adding extra bits in the system information block (such as the first system information block or the second system information block) to Indicate the correspondence between each bitmap in SIBx and each SNPN in SIB1 that supports external authentication, and avoid adding extra bits in the system information block (such as the first system information block or the second system information block) to indicate
- the correspondence between each bit in the bitmap and each group identifier further reduces the data amount of the cell broadcast system information.
- FIG. 11 is another schematic flowchart of a communication method provided by an embodiment of the present application. As shown in Figure 11, the method includes the following steps S1101 to S1103:
- An access network device determines a system information block of a cell.
- the access network device determines the system information block of the cell.
- the system information block includes information of n networks, identifications of m certificate holder groups, and k bitmaps, wherein the information of one network includes the identification of the network and the first indication information corresponding to the network.
- An indication message is used to indicate that the network supports the terminal device to use the certificate holder's certificate to access
- a bitmap is used to indicate a corresponding group of certificate holders supported by the network
- each bitmap includes m Bits
- m bits are in one-to-one correspondence with the identifiers of m certificate holder groups
- each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the bit
- m and n are An integer greater than 0, and k is an integer less than or equal to n. That is to say, the system information block of the cell includes: 1. Group IDs of several groups (the ID of each group is only included once); 2. Information of several SNPNs.
- the information of each SNPN includes: 1 the identification of the SNPN (that is, the SNPN ID); 2 the first indication information, which is used to indicate that the SNPN supports the UE to use the certificate holder's certificate to access; 3 the bitmap, which is used to indicate the SNPN Supported groups.
- the bitmap consists of several bits, which correspond to the groups contained in SIB1 one-to-one in turn (so the number of bits in the bitmap is the same as the number of group identifiers contained in SIB1 ), each bit is used to indicate whether the SNPN supports the group corresponding to the bit.
- the value of a bit may be 0 or 1, the value of 1 indicates that the SNPN supports the group corresponding to the bit, and the value of 0 indicates that it does not support.
- the first system information block may also include information about h networks that do not support external authentication, where the information about the h networks that do not support external authentication can be understood as:
- the information includes the identifier of the network and does not include the first indication information.
- the first system information block of a cell may include information of all networks supported by the cell (that is, information of n+h networks), wherein, all networks supported by the cell may include support for the UE to use the certificate holder.
- n networks that is, networks that support external authentication
- h networks that is, networks that do not support external authentication
- the information of a certain network includes the first indication information, it means that the network supports the UE to access using the certificate of the certificate holder (ie, supports external authentication). If the information of a certain network does not include the first indication information, it means that the network does not support access by the UE using the certificate of the certificate holder (ie, does not support external authentication).
- h is an integer greater than or equal to 0.
- the system information block involved in the embodiments of the present application may be system information block 1 (ie, SIB1 ), or may also be other system information blocks, which are not limited herein.
- SIB1 system information block 1
- the following embodiments of the present application all take that the system information block is SIB1 as an example for illustrative description.
- the network involved in this application may be an SNPN, or may also be other networks (eg, PLMN), etc., which is not limited herein.
- the following embodiments of the present application all take the SNPN as an example for illustrative description.
- the identification of SNPN consists of PLMN ID and NID.
- FIG. 12 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- the cell is shared by SNPN1 and SNPN2.
- the SIB1 contains the identifiers of groups A, B, and C and the information of SNPN1 and SNPN2.
- the information of SNPN1 includes the identification of SNPN1, the first indication information and the bitmap (111), the information of SNPN2 includes the identification of SNPN2, the first indication information and the bitmap (011), wherein the bitmap (111) indicates that SNPN1 supports Groups A, B, C, bitmap (011) indicates that SNPN2 supports groups B, C.
- FIG. 13 is another schematic diagram of a system information block of a cell provided by an embodiment of the present application.
- SIB1 includes the information of SNPN1, the information of SNPN2, the information of SNPN3, the information of SNPN4 and the information of SNPN5.
- the information of SNPN1 includes the identification of SNPN1
- the information of SNPN2 includes the identification of SNPN2 and the first indication information
- the information of SNPN3 includes the identification of SNPN3, the first indication information and the bitmap (111)
- the information of SNPN4 includes the identification of SNPN4, the first indication information and the bitmap (111).
- the first indication information and bitmap (110), the information of SNPN5 includes the identifier of SNPN5, the first indication information and the bitmap (011).
- the SNPN1 does not support external authentication (because the information of the SNPN1 does not include the first indication information).
- SNPN2 supports external authentication, but does not specify which groups are supported.
- SNPN2 supports external authentication, and the bitmap corresponding to SNPN3 (111) indicates that SNPN3 supports groups A, B, and C, and the bitmap corresponding to SNPN4 (110) indicates that SNPN4 supports groups B, C, and the bitmap corresponding to SNPN5 (011) Indicates that SNPN5 supports groups B and C.
- the access network device sends a system information block to the terminal device.
- the access network device may send the system information block to the terminal device.
- the first system information block is SIB1, therefore, the access network device may send the SIB1 to the terminal device in a broadcast manner.
- the terminal device selects the network according to the system information block.
- the terminal device can perform network selection according to the first system information block and the second system information block .
- FIG. 14 is another schematic flowchart of network selection by a terminal device according to an embodiment of the present application.
- the UE is divided into two layers: UE NAS and UE AS.
- the UE NAS is responsible for network selection
- the UE AS is responsible for cell selection and reselection.
- the process for the UE to select a network according to the cell system information is as follows:
- Step 1 The base station sends a system information block to the UE AS.
- the system information block includes information of several SNPNs, identifiers of several certificate holder groups, and several bitmaps and other information.
- Step 2 The UE AS in the UE sends information such as bitmap and SNPN information to the UE NAS.
- information such as bitmap and SNPN information
- the UE AS in the UE After the UE AS in the UE receives the system information block from the base station, it can parse the system information block to obtain various information included in the system information block. Then, part of the content in the system information block (information such as bitmap and SNPN information) is sent to the UE NAS.
- Step 3 UE NAS selects the target SNPN according to information such as bitmap and SNPN information. Specifically, the UE NAS can determine which groups each SNPN supports according to the bitmap and SNPN information received from the UE NAS (that is, according to the value of each bit in the bitmap of each SNPN and the value of each bit in each bit). The corresponding group, deduce which groups the SNPN supports), and select a target SNPN according to its own preconfigured group, and the selected target SNPN supports the UE preconfigured group (that is, the UE preconfigured several groups) , if the UE AS finds that the group supported by a certain SNPN contains its own preconfigured group, the UE can select the SNPN. If the UE finds that the groups supported by multiple SNPNs contain its own preconfigured group group, the UE can select one SNPN among these SNPNs (randomly or in sequence according to a preconfigured priority)).
- Step 4 UE NAS sends information such as target SNPN and third indication information to UE AS. That is to say, the UE NAS may inform the UE AS of the selected target SNPN, wherein the third indication information is used to indicate that the UE AS has selected a network that supports external authentication.
- Step 5 UE AS selects a cell and initiates access. That is to say, the UE AS can select the cell of the target SNPN (that is, if the UE AS searches for a cell in one or more frequency bands, if it searches for a cell whose system information contains the identity of the target SNPN, and the signal quality of the cell is greater than a certain threshold value (the threshold value is included in the SIB1 of the cell), the UE AS selects the cell) and initiates random access in the cell.
- the threshold value is included in the SIB1 of the cell
- the SIB1 (ie, the first system information block) of the cell includes the identifiers of the groups supported by all SNPNs of the cell (the identifier of each group is only included once), and also includes several bitmaps (bitmaps). ) is used to indicate the groups supported by each SNPN that supports external authentication.
- bitmaps bitmaps
- the bits included in each bitmap are in one-to-one correspondence with the identifiers of each group included in the system information block. Due to the large number of bits in the group identifier, the group supported by the SNPN is indicated by a bitmap, which can avoid repeated occurrence of the same group identifier in the SIB1, thereby reducing the number of bits included in the SIB1.
- the bitmap can be implicitly associated with the group ID, so as to avoid adding extra bits in the system information block to indicate that each bit in the bitmap is related to the group ID.
- the correspondence between each group identifier further reduces the data amount of the cell broadcast system information and saves transmission resources.
- the communication device provided by the present application will be described in detail below with reference to FIGS. 15 to 16 .
- FIG. 15 is a schematic structural diagram of a communication apparatus provided by an embodiment of the present application.
- the communication apparatus shown in FIG. 15 may be used to execute part or all of the functions of the access network device in the method embodiments described in the foregoing FIG. 4 to FIG. 14 .
- the device may be an access network device, or a device in the access network device, or a device that can be matched and used with the access network device.
- the communication device may also be a chip system.
- the communication apparatus shown in FIG. 15 may include a transceiver unit 1501 and a processing unit 1502 . Among them, the processing unit 1502 is used for data processing.
- the transceiver unit 1501 integrates a receiving unit and a transmitting unit.
- the transceiver unit 1501 may also be referred to as a communication unit. Alternatively, the transceiver unit 1501 can also be divided into a receiving unit and a sending unit.
- the processing unit 1502 and the transceiver unit 1501 below are the same, and will not be repeated below. in:
- the processing unit 1502 is configured to determine a first system information block of the cell, where the first system information block includes information of n networks, wherein the information of one network includes the identifier of the network and the corresponding information of the network.
- the first indication information where the above-mentioned first indication information is used to instruct the above-mentioned network to support the terminal device to access by using the certificate of the certificate holder.
- the above-mentioned processing unit 1502 is used to determine the second system information block of the above-mentioned cell, where the above-mentioned second system information block includes the identification of m certificate holder groups and n bitmaps, and the above-mentioned n bitmaps are the same as the above-mentioned No.
- the identifiers of the n networks included in a system information block are in one-to-one correspondence, each bitmap is used to indicate the certificate holder group supported by the corresponding network, and each bitmap includes m bits Bit, the above m bits are in one-to-one correspondence with the identifiers of the above m certificate holder groups, each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the above bits, m and n is an integer greater than 0.
- the transceiver unit 1501 is configured to send the above-mentioned first system information block and the above-mentioned second system information block to the terminal device.
- the processing unit 1502 is configured to determine a system information block of the cell, where the system information block includes information of n networks, identifiers of m certificate holder groups, and k bitmaps, one of which is
- the information of the network includes the identifier of the above-mentioned network and the first indication information corresponding to the above-mentioned network
- the above-mentioned first indication information is used to indicate that the above-mentioned network supports the terminal device to use the certificate of the certificate holder to access
- a bitmap is used to indicate the corresponding A group of certificate holders supported by a network of It is used to indicate whether the corresponding network supports the certificate holder group corresponding to the above bit
- m and n are integers greater than 0, and k is an integer less than or equal to n.
- the transceiver unit 1501 is configured to send the above-mentioned system information block to the terminal device.
- FIG. 15 shows a schematic structural diagram of a communication device according to an embodiment of the present application.
- the communication apparatus shown in FIG. 15 may be used to execute part or all of the functions of the terminal device in the method embodiments described in the foregoing FIG. 4 to FIG. 14 .
- the device may be a terminal device, or a device in the terminal device, or a device that can be used in combination with the terminal device.
- the communication device may also be a chip system.
- the communication apparatus shown in FIG. 15 may include a transceiver unit 1501 and a processing unit 1502 . in:
- the transceiver unit 1501 is configured to receive a first system information block and a second system information block from an access network device, where the first system information block includes information of n networks, wherein information of one network is It includes the identifier of the above-mentioned network and the first indication information corresponding to the above-mentioned network, the above-mentioned first indication information is used to instruct the above-mentioned network to support the terminal equipment to use the certificate of the certificate holder to access, and the above-mentioned second system information block includes m certificate holders.
- the above-mentioned n bitmaps are in one-to-one correspondence with the identifiers of the above-mentioned n networks included in the above-mentioned first system information block, and each bitmap is used to indicate the corresponding The certificate holder group supported by the network of It is used to indicate whether the corresponding network supports the certificate holder group corresponding to the above bits, and m and n are integers greater than 0.
- the processing unit 1502 is configured to perform network selection according to the first system information block and the second system information block.
- the transceiver unit 1501 is configured to receive a system information block from an access network device, where the system information block includes information of n networks, identifiers of m certificate holder groups, and k bits
- the information of one network includes the identifier of the network and the first indication information corresponding to the network.
- the first indication information is used to instruct the network to support the terminal device to use the certificate of the certificate holder to access.
- a bitmap It is used to indicate a certificate holder group supported by a corresponding network, each bitmap includes m bits, and the m bits are in one-to-one correspondence with the identifiers of the m certificate holder groups. Each bit is used to indicate whether the corresponding network supports the certificate holder group corresponding to the above bit, m and n are integers greater than 0, and k is an integer less than or equal to n.
- the processing unit 1502 is configured to perform network selection according to the above-mentioned system information block.
- FIG. 16 is a schematic structural diagram of another communication apparatus provided by an embodiment of the present application.
- a communication apparatus 160 provided by an embodiment of the present application is used to implement the functions of the access network equipment in the foregoing FIG. 4 to FIG. 14 .
- the apparatus may be an access network device or an apparatus for an access network device.
- the means for the access network device may be a chip system or chip in the access network device. Wherein, the chip system may be composed of chips, and may also include chips and other discrete devices.
- the communication apparatus 160 is configured to implement the functions of the terminal equipment in the above-mentioned FIG. 4 to FIG. 14 .
- the apparatus may be a terminal device or an apparatus for a terminal device.
- the means for the terminal device may be a system-on-a-chip or a chip within the terminal device. Wherein, the chip system may be composed of chips, and may also include chips and other discrete devices.
- the communication apparatus 160 includes at least one processor 1620, configured to implement the data processing function of the access network device or the terminal device in the method provided in the embodiment of the present application.
- the apparatus 160 may further include a communication interface 1610, configured to implement the sending and receiving operations of the access network device or the terminal device in the method provided in the embodiment of the present application.
- the communication interface may be a transceiver, a circuit, a bus, a module or other types of communication interfaces, which are used to communicate with other devices through a transmission medium.
- the communication interface 1610 is used by the apparatus in the apparatus 160 to communicate with other devices.
- the processor 1620 uses the communication interface 1610 to send and receive data, and is used to implement the methods described above in the above method embodiments in FIGS. 4 to 14 .
- Apparatus 160 may also include at least one memory 1630 for storing program instructions and/or data.
- Memory 1630 and processor 1620 are coupled.
- the coupling in the embodiments of the present application is an indirect coupling or communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules.
- Processor 1620 may cooperate with memory 1630.
- Processor 1620 may execute program instructions stored in memory 1630 . At least one of the at least one memory described above may be included in the processor.
- the processor 1620 can read the software program in the memory 1630, interpret and execute the instructions of the software program, and process the data of the software program.
- the processor 1620 performs baseband processing on the data to be sent, and outputs a baseband signal to a radio frequency circuit (not shown in the figure).
- the radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through the antenna in the form of electromagnetic waves Send out.
- the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1620, and the processor 1620 converts the baseband signal into data and processes the data. deal with.
- the above-mentioned radio frequency circuits and antennas may be provided independently of the processor 1620 that performs baseband processing.
- the radio frequency circuits and antennas may be arranged remotely from the communication device. .
- connection medium between the communication interface 1610, the processor 1620, and the memory 1630 is not limited in the embodiments of the present application.
- the memory 1630, the processor 1620, and the communication interface 1610 are connected through a bus 1640 in FIG. 16.
- the bus is represented by a thick line in FIG. 16, and the connection mode between other components is only for schematic illustration. , is not limited.
- the above-mentioned bus can be divided into an address bus, a data bus, a control bus, and the like. For ease of presentation, only one thick line is shown in FIG. 16, but it does not mean that there is only one bus or one type of bus.
- the communication interface 1610 may output or receive baseband signals.
- the output or reception of the communication interface 1610 may be a radio frequency signal.
- the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, which can implement or The methods, operations, and logic block diagrams disclosed in the embodiments of the present application are executed.
- a general purpose processor may be a microprocessor or any conventional processor or the like.
- the operations of the methods disclosed in combination with the embodiments of the present application may be directly embodied as being executed by a hardware processor, or executed by a combination of hardware and software modules in the processor.
- Embodiments of the present application further provide a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is executed on a processor, the method flow of the above method embodiments in FIG. 4 to FIG. 14 is implemented.
- An embodiment of the present application further provides a computer program product, when the computer program product is executed on a processor, the method flow of FIGS. 4 to 14 in the foregoing method embodiment is realized.
- FIG. 17 is another schematic flowchart of the communication method provided by the embodiment of the present application. As shown in Figure 17, the process of UE accessing the network is as follows:
- Step 1 The UE sends an RRC Setup Complete (RRC Setup Complete) message to the base station.
- RRC Setup Complete RRC Setup Complete
- the RRC establishment complete message includes third indication information, where the third indication information is used to indicate that the current access is used for an online subscription (onboarding) service.
- the base station sends an Initial UE Message to the AMF.
- the initial UE message includes fourth indication information, where the fourth indication information is used to indicate that the cell accessed by the UE supports the online subscription service.
- the fourth indication information may occupy 1 bit. Specifically, when the above-mentioned initial UE message includes the fourth indication information, it indicates that the cell accessed by the UE supports the online subscription service. When the above-mentioned initial UE message does not include the fourth indication information, it means that the cell accessed by the UE does not support the online subscription service.
- the AMF decides whether to allow the UE to access. Specifically, the AMF may decide whether to allow the UE to access according to the fourth indication information in the initial UE message. Exemplarily, when the UE is registered as an online subscription type or the UE requests an online subscription service, if the above-mentioned initial UE message includes the fourth indication information, the AMF allows the UE to access; if the above-mentioned initial UE message does not include the fourth indication information , then AMF does not allow UE access.
- Step 4a The AMF sends an Initial Context Setup Request message to the base station. Generally speaking, if the AMF allows UE access, the AMF sends an initial context establishment request message to the base station.
- Step 4b The AMF sends a UE context release command (UE Context Release Command) message to the base station. Generally speaking, if the AMF does not allow UE access, the AMF sends a UE context release command message to the base station.
- UE Context Release Command UE Context Release Command
- the base station can make the AMF know whether the cell accessed by the UE supports the online subscription service, so as to decide whether to allow the UE to access.
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Abstract
Description
Claims (25)
- 一种通信方法,其特征在于,包括:接入网设备确定小区的第一系统信息块,所述第一系统信息块包括n个网络的信息,其中一个网络的信息包括所述网络的标识和所述网络对应的第一指示信息,所述第一指示信息用于指示所述网络支持终端设备使用证书持有者的证书进行接入;接入网设备确定所述小区的第二系统信息块,所述第二系统信息块包括m个证书持有者群组的标识和n个比特位图,所述n个比特位图与所述第一系统信息块中所包括的所述n个网络的标识依次一一对应,每个比特位图用于指示对应的网络所支持的证书持有者群组,所述每个比特位图包括m个比特位,所述m个比特位与所述m个证书持有者群组的标识依次一一对应,每个比特位用于指示对应的网络是否支持所述比特位对应的证书持有者群组,m和n为大于0的整数;所述接入网设备向终端设备发送所述第一系统信息块和所述第二系统信息块。
- 根据权利要求1所述的方法,其特征在于,所述第一系统信息块为系统信息块1。
- 根据权利要求1或2所述的方法,其特征在于,所述第二系统信息块为除系统信息块1之外的其他系统信息块。
- 根据权利要求1-3任一项所述的方法,其特征在于,所述第二系统信息块中还包括第二指示信息;所述第二指示信息用于指示是否采用比特位图的方式来指示支持终端设备使用证书持有者的证书进行接入的网络所支持的证书持有者群组;所述第二系统信息块包括m个证书持有者群组的标识和n个比特位图具体为:若所述第二指示信息指示采用比特位图的方式来指示支持终端设备使用证书持有者的证书进行接入的网络所支持的证书持有者群组,则所述第二系统信息块包括所述m个证书持有者群组的标识和所述n个比特位图。
- 根据权利要求4所述的方法,其特征在于,若所述第二指示信息指示不采用比特位图的方式来指示支持终端设备使用证书持有者的证书进行接入的网络所支持的证书持有者群组,则所述第二系统信息块包括所述n个网络中每个网络所支持的证书持有者群组的标识。
- 根据权利要求1-5任一项所述的方法,其特征在于,所述网络为独立的非公共网络SNPN。
- 一种通信方法,其特征在于,包括:终端设备接收来自接入网设备的第一系统信息块和第二系统信息块,所述第一系统信息块包括n个网络的信息,其中一个网络的信息包括所述网络的标识和所述网络对应的第一指示信息,所述第一指示信息用于指示所述网络支持终端设备使用证书持有者的证书进行接入,所述第二系统信息块包括m个证书持有者群组的标识和n个比特位图,所述n个比特位图与所述第一系统信息块中所包括的所述n个网络的标识依次一一对应,每个比特位图用于指示对应的网络所支持的证书持有者群组,所述每个比特位图包括m个比特位,所述m个比特位与所述m个证书持有者群组的标识依次一一对应,每个比特位用于指示对应的网络是否支持所述比特位对应的证书持有者群组,m和n为大于0的整数;所述终端设备根据所述第一系统信息块和所述第二系统信息块进行网络选择。
- 根据权利要求7所述的方法,其特征在于,所述第一系统信息块为系统信息块1。
- 根据权利要求7或8所述的方法,其特征在于,所述第二系统信息块为除系统信息块1之外的其他系统信息块。
- 根据权利要求7-8任一项所述的方法,其特征在于,所述第二系统信息块中还包括第二指示信息;所述第二指示信息用于指示是否采用比特位图的方式来指示支持终端设备使用证书持有者的证书进行接入的网络所支持的证书持有者群组;所述第二系统信息块包括m个证书持有者群组的标识和n个比特位图具体为:若所述第二指示信息指示采用比特位图的方式来指示支持终端设备使用证书持有者的证书进行接入的网络所支持的证书持有者群组,则所述第二系统信息块包括所述m个证书持有者群组的标识和所述n个比特位图。
- 根据权利要求10所述的方法,其特征在于,若所述第二指示信息指示不采用比特位图的方式来指示支持终端设备使用证书持有者的证书进行接入的网络所支持的证书持有者群组,则所述第二系统信息块包括所述n个网络中每个网络所支持的证书持有者群组的标识。
- 根据权利要求7-11任一项所述的方法,其特征在于,所述网络为独立的非公共网络SNPN。
- 一种通信方法,其特征在于,包括:接入网设备确定小区的系统信息块,所述系统信息块包括n个网络的信息、m个证书持有者群组的标识和k个比特位图,其中一个网络的信息包括所述网络的标识和所述网络对应的第一指示信息,所述第一指示信息用于指示所述网络支持终端设备使用证书持有者的证书进行接入,一个比特位图用于指示对应的一个网络所支持的证书持有者群组,每个比特位图包括m个比特位,所述m个比特位与所述m个证书持有者群组的标识依次一一对应,每个比特位用于指示对应的网络是否支持所述比特位对应的证书持有者群组,m和n为大于0的整数,且k为小于或者等于n的整数;所述接入网设备向终端设备发送所述系统信息块。
- 根据权利要求13所述的方法,其特征在于,所述系统信息块为系统信息块1。
- 根据权利要求13或14所述的方法,其特征在于,所述网络为独立的非公共网络SNPN。
- 一种通信方法,其特征在于,包括:终端设备接收来自接入网设备的系统信息块,所述系统信息块包括n个网络的信息、m个证书持有者群组的标识和k个比特位图,其中一个网络的信息包括所述网络的标识和所述网络对应的第一指示信息,所述第一指示信息用于指示所述网络支持终端设备使用证书持有者的证书进行接入,一个比特位图用于指示对应的一个网络所支持的证书持有者群组,每个 比特位图包括m个比特位,所述m个比特位与所述m个证书持有者群组的标识依次一一对应,每个比特位用于指示对应的网络是否支持所述比特位对应的证书持有者群组,m和n为大于0的整数,且k为小于或者等于n的整数;所述终端设备根据所述系统信息块进行网络选择。
- 根据权利要求16所述的方法,其特征在于,所述系统信息块为系统信息块1。
- 根据权利要求16或17所述的方法,其特征在于,所述网络为独立的非公共网络SNPN。
- 一种通信装置,其特征在于,所述通信装置为接入网设备,包括:处理单元,用于确定小区的第一系统信息块,所述第一系统信息块包括n个网络的信息,其中一个网络的信息包括所述网络的标识和所述网络对应的第一指示信息,所述第一指示信息用于指示所述网络支持终端设备使用证书持有者的证书进行接入;所述处理单元,用于确定所述小区的第二系统信息块,所述第二系统信息块包括m个证书持有者群组的标识和n个比特位图,所述n个比特位图与所述第一系统信息块中所包括的所述n个网络的标识依次一一对应,每个比特位图用于指示对应的网络所支持的证书持有者群组,所述每个比特位图包括m个比特位,所述m个比特位与所述m个证书持有者群组的标识依次一一对应,每个比特位用于指示对应的网络是否支持所述比特位对应的证书持有者群组,m和n为大于0的整数;收发单元,用于向终端设备发送所述第一系统信息块和所述第二系统信息块。
- 一种通信装置,其特征在于,所述通信装置为终端设备,包括:收发单元,用于接收来自接入网设备的第一系统信息块和第二系统信息块,所述第一系统信息块包括n个网络的信息,其中一个网络的信息包括所述网络的标识和所述网络对应的第一指示信息,所述第一指示信息用于指示所述网络支持终端设备使用证书持有者的证书进行接入,所述第二系统信息块包括m个证书持有者群组的标识和n个比特位图,所述n个比特位图与所述第一系统信息块中所包括的所述n个网络的标识依次一一对应,每个比特位图用于指示对应的网络所支持的证书持有者群组,所述每个比特位图包括m个比特位,所述m个比特位与所述m个证书持有者群组的标识依次一一对应,每个比特位用于指示对应的网络是否支持所述比特位对应的证书持有者群组,m和n为大于0的整数;处理单元,用于根据所述第一系统信息块和所述第二系统信息块进行网络选择。
- 一种通信装置,其特征在于,所述通信装置为接入网设备,包括:处理单元,用于确定小区的系统信息块,所述系统信息块包括n个网络的信息、m个证书持有者群组的标识和k个比特位图,其中一个网络的信息包括所述网络的标识和所述网络对应的第一指示信息,所述第一指示信息用于指示所述网络支持终端设备使用证书持有者的证书进行接入,一个比特位图用于指示对应的一个网络所支持的证书持有者群组,每个比特位图包括m个比特位,所述m个比特位与所述m个证书持有者群组的标识依次一一对应,每个比特位用于指示对应的网络是否支持所述比特位对应的证书持有者群组,m和n为大于0的整数,且k为小于或者等于n的整数;收发单元,用于向终端设备发送所述系统信息块。
- 一种通信装置,其特征在于,所述通信装置为终端设备,包括:收发单元,用于接收来自接入网设备的系统信息块,所述系统信息块包括n个网络的信息、m个证书持有者群组的标识和k个比特位图,其中一个网络的信息包括所述网络的标识和所述网络对应的第一指示信息,所述第一指示信息用于指示所述网络支持终端设备使用证书持有者的证书进行接入,一个比特位图用于指示对应的一个网络所支持的证书持有者群组,每个比特位图包括m个比特位,所述m个比特位与所述m个证书持有者群组的标识依次一一对应,每个比特位用于指示对应的网络是否支持所述比特位对应的证书持有者群组,m和n为大于0的整数,且k为小于或者等于n的整数;处理单元,用于根据所述系统信息块进行网络选择。
- 一种通信装置,其特征在于,包括处理器和收发器,所述处理器和所述收发器用于执行至少一个存储器中存储的计算机程序或指令,以使得所述装置实现如权利要求1~6中任一项所述的方法,或,实现如权利要求7~12中任一项所述的方法,或,实现如权利要求13~15中任一项所述的方法,或,实现如权利要求16~18中任一项所述的方法。
- 一种计算机可读存储介质,其特征在于,所述存储介质中存储有计算机程序或指令,当所述计算机程序或指令被计算机执行时,实现如权利要求1~6中任一项所述的方法,或,实现如权利要求7~12中任一项所述的方法,或,实现如权利要求13~15中任一项所述的方法,或,实现如权利要求16~18中任一项所述的方法。
- 一种计算机程序产品,其特征在于,所述计算机程序产品中包括计算机程序代码,当所述计算机程序代码在计算机上运行时,以实现权利要求1~6中任一项所述的方法,或以实现如权利要求7~12中任一项所述的方法,或以实现如权利要求13~15中任一项所述的方法,或以实现如权利要求16~18中任一项所述的方法。
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