WO2022022450A1 - Procédé de sélection de réseau, procédé d'accès au réseau et dispositif de noeud associé - Google Patents

Procédé de sélection de réseau, procédé d'accès au réseau et dispositif de noeud associé Download PDF

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Publication number
WO2022022450A1
WO2022022450A1 PCT/CN2021/108406 CN2021108406W WO2022022450A1 WO 2022022450 A1 WO2022022450 A1 WO 2022022450A1 CN 2021108406 W CN2021108406 W CN 2021108406W WO 2022022450 A1 WO2022022450 A1 WO 2022022450A1
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WIPO (PCT)
Prior art keywords
terminal
cell
message
information
network node
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PCT/CN2021/108406
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English (en)
Chinese (zh)
Inventor
柴丽
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中国移动通信有限公司研究院
中国移动通信集团有限公司
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Publication of WO2022022450A1 publication Critical patent/WO2022022450A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/11—Allocation or use of connection identifiers

Definitions

  • the present application relates to the field of wireless communication technologies, and in particular, to a network selection method, a network access method, and related node devices.
  • the wireless communication between people was mainly considered.
  • the 5G communication service consists of enhanced mobile broadband (eMBB, Enhanced Mobile Broadband), massive machine communication (mMTC, massive Machine Type Communication), high reliability and low Latency (uRLLC, Ultra-Reliable and Low-Latency Communication) consists of three categories.
  • eMBB enhanced mobile broadband
  • mMTC massive Machine Type Communication
  • uRLLC Ultra-Reliable and Low-Latency Communication
  • the connection includes interconnection and collaboration between physical entities, virtual-real interconnection and interaction between physical entities and virtual entities, two-way communication and closed-loop control between physical entities and data/services, virtual entities, data and services. integration and integration. These connections support a richer variety of digital twin services.
  • the 6G network will expand to a wider world, breaking the boundaries of the traditional eMBB and URLLC of the 5G network, and broadening the support for more diverse digital twin services, such as low-latency, high-reliability and 5G eMBB. high-speed services.
  • current 5G technology is only considered to support relatively small coverage areas, such as industrial factories, automated docks, etc.
  • applications that support digital twin technology will be introduced into large-scale sensor networks in wide areas, such as smart cities, which are mainly composed of massive sensors, high-computing devices and high-capacity storage devices. This large-scale sensor network will introduce large-scale low-latency and high-reliability services, and will integrate URLLC and mMTC services in the 5G tradition.
  • Embodiments of the present application provide a network selection method, a network access method, and related node devices.
  • an embodiment of the present application provides a network selection method, the method comprising:
  • the network node selects a cell for the terminal that matches the state attribute of the terminal; the cell has a unique service attribute, and/or the cell has a unique management state; the network node is a base station or the terminal.
  • the management state includes a connected state or an inactive state.
  • the management state includes a four-layer protocol stack, a three-layer protocol stack or a one-layer protocol stack for data plane layer two management;
  • the four-layer protocol stack includes a Service Data Adaptation Protocol (SDAP, Service Data Adaptation Protocol) layer, a Packet Data Convergence Protocol (PDCP, Packet Data Convergence Protocol) layer, and a Radio Link Control (RLC, Radio Link Control) layer and Medium Access Control (MAC, Medium Access Control) layer;
  • SDAP Service Data Adaptation Protocol
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • MAC Medium Access Control
  • the three-layer protocol stack includes a PDCP layer, an RLC layer and a MAC layer;
  • the one-layer protocol stack includes partial functions of at least one layer in the SDAP layer, the PDCP layer, the RLC layer, and the MAC layer.
  • the management state includes a layer-2 protocol stack or a layer-1 protocol stack for control layer management
  • the two-layer protocol stack includes a non-access stratum (NAS, Non-Access Stratum) and a radio resource control (RRC, Radio Resource Control) layer;
  • NAS Non-Access stratum
  • RRC Radio Resource Control
  • the one-layer protocol stack includes some functions of the NAS and/or RRC layers.
  • the state attribute of the terminal includes at least one of the following characteristics:
  • QoS Quality of Service
  • QoE Quality of Experience
  • the moving speed and/or moving direction and/or moving trajectory of the business are the moving speed and/or moving direction and/or moving trajectory of the business.
  • the state attribute of the terminal includes a data packet characteristic of the terminal;
  • the data packet characteristic includes a first data packet characteristic and/or a second data packet characteristic; satisfying the first data packet characteristic The length of the data packet with the second data packet characteristic is greater than the length of the data packet satisfying the first data packet characteristic;
  • the network node selects a cell matching the state attribute of the terminal for the terminal, including:
  • the network node selects, for the terminal, a unique inactive cell that matches the first data packet characteristic of the terminal;
  • the network node selects, for the terminal, a unique connected state cell that matches the second data packet characteristic of the terminal.
  • the state attribute of the terminal includes a service attribute of the terminal
  • the network node selects a cell matching the state attribute of the terminal for the terminal, including:
  • the network node selects a cell for the terminal, and the unique service attribute of the cell matches the service attribute of the terminal.
  • the network node when the network node is the terminal, the network node selects a cell matching the state attribute of the terminal for the terminal, including:
  • the terminal determines the service attribute and/or management state of each cell based on the identity of each cell, and selects a cell matching the state attribute of the terminal based on the service attribute and/or management state of each cell.
  • the method before the terminal determines the service attribute and/or management state of each cell based on the identity of each cell, the method further includes:
  • the terminal receives the first system message sent by the base station, where the first system message includes at least one of the following information:
  • the method further includes: when the state attribute of the terminal changes, the network node reselects and changes the state attribute of the terminal for the terminal matching cells.
  • the network node when the network node is a base station, the network node reselects a cell for the terminal that matches the changed state attribute of the terminal, including:
  • the base station determines the service attribute and/or management state of each cell based on the identifier of each cell, and selects a cell matching the updated state attribute of the terminal based on the service attribute and/or management state of each cell.
  • the method further includes: the base station sending the relevant information of the cell to the terminal.
  • an embodiment of the present application further provides a network access method, the method comprising:
  • the base station receives a first message sent by the terminal, where the first message is used to request to establish a connection;
  • the base station parses the first message, obtains content contained in the first message, and establishes a connection with a data network node based on the content;
  • the base station sends a second message to the terminal in response to the first message.
  • the first message further includes message content for random access, where the message content is the first message content in the two-step random access.
  • the method further includes: the base station sends a first system message to the terminal, where the first system message includes at least one of the following information:
  • the method further includes: the base station sends a second system message to the terminal, where the second system message includes indication information, where the indication information is used to indicate that no A random access procedure is performed.
  • the content included in the first message includes all or part of the AS and NAS information of the connection establishment;
  • NAS class information is explicitly defined
  • NAS class information includes at least one of the following:
  • the identifier of the terminal The identifier of the terminal, the capability information of the terminal, the network slice identifier, the address of the data network node, the service attribute information, and the cause value corresponding to the message.
  • the establishing a connection with the data network node based on the content includes: the base station obtains information of the terminal according to the identifier of the terminal, and the information of the terminal at least includes a subscription information;
  • the wireless parameter configuration information includes at least one of the following information: header compression parameters, security encryption parameters, and retransmission parameters.
  • the second message includes at least one of the following information: configuration information of radio resources used by the terminal for data transmission in the cell, the identifier of the terminal in the cell, the address information for communication between the terminal and the data network node.
  • the base station uses a user plane protocol layer to perform data processing
  • the user plane protocol layer includes at least one of the following functions: a header compression function, a security encryption function, and a scheduling function , multiplexing and concatenation functions, semi-static resource configuration, protocol error detection and retransmission functions.
  • an embodiment of the present application further provides a network access method, the method comprising:
  • the terminal sends a first message for requesting connection establishment to the base station; the content contained in the first message is used for establishing a connection between the base station and the data network node;
  • a second message is received in response to the first message.
  • the first message further includes message content for random access, where the message content is the first message content in the two-step random access.
  • the method further includes: receiving, by the terminal, a first system message sent by the base station, where the first system message includes at least one of the following information:
  • the method further includes: receiving, by the terminal, a second system message sent by the base station, where the second system message includes indication information, where the indication information is used to indicate that no A random access procedure needs to be performed.
  • the content included in the first message includes all or part of the AS and NAS information of the connection establishment;
  • NAS class information is explicitly defined
  • NAS class information includes at least one of the following:
  • the identifier of the terminal The identifier of the terminal, the capability information of the terminal, the network slice identifier, the address of the data network node, the service attribute information, and the cause value corresponding to the message.
  • the second message includes at least one of the following information: configuration information of radio resources used by the terminal for data transmission in the cell, the identifier of the terminal in the cell, the address information for communication between the terminal and the data network node.
  • an embodiment of the present application further provides a network node, the network node includes a selection unit configured to select a cell matching a state attribute of the terminal for a terminal; the cell has a unique service attribute, and /or, the cell has a unique management state; the network node is a base station or the terminal.
  • the management state includes a connected state or an inactive state.
  • the management state includes a four-layer protocol stack, a three-layer protocol stack or a one-layer protocol stack for data plane layer two management;
  • the four-layer protocol stack includes SDAP layer, PDCP layer, RLC layer and MAC layer;
  • the three-layer protocol stack includes a PDCP layer, an RLC layer and a MAC layer;
  • the one-layer protocol stack includes partial functions of at least one layer in SDAP, PDCP layer, RLC layer, and MAC layer.
  • the management state includes a layer-2 protocol stack or a layer-1 protocol stack for control layer management
  • the two-layer protocol stack includes a NAS layer and an RRC layer;
  • the one-layer protocol stack includes some functions of the NAS and/or RRC layers.
  • the state attribute of the terminal includes at least one of the following characteristics:
  • the moving speed and/or moving direction and/or moving trajectory of the business are the moving speed and/or moving direction and/or moving trajectory of the business.
  • the state attribute of the terminal includes a data packet characteristic of the terminal;
  • the data packet characteristic includes a first data packet characteristic and/or a second data packet characteristic; satisfying the first data packet characteristic The length of the data packet with the second data packet characteristic is greater than the length of the data packet satisfying the first data packet characteristic;
  • the selection unit is configured to select, for the terminal, the only non-identical data packet matching the first data packet characteristic of the terminal by the network node when the state attribute of the terminal is the first data packet characteristic.
  • a cell in an active state when the state attribute of the terminal is the second data packet characteristic, the network node selects for the terminal a unique connected state that matches the second data packet characteristic of the terminal community.
  • the state attribute of the terminal includes a service attribute of the terminal; the selection unit is configured to select a cell for the terminal, and the only service attribute of the cell is the same as the service attribute of the terminal. match the service attributes of the terminal.
  • the selection unit is configured to, when the network node is the terminal, determine the service attribute and/or management status of each cell based on the identifier of each cell, and based on each cell The service attribute and/or management state of the cell selects a cell that matches the state attribute of the terminal.
  • the network node further includes a first receiving unit, configured to receive the information sent by the base station before the selecting unit determines the service attribute and/or management state of each cell based on the identifier of each cell.
  • the first system message, the first system message includes at least one of the following information:
  • the selection unit is further configured to, when the state attribute of the terminal changes, the network node reselects the terminal for the terminal and the changed status of the terminal Cells whose state attributes match.
  • the network node further includes a second receiving unit, configured to receive a message sent by the terminal when the network node is a base station, where the message at least includes the The state attribute after the terminal is updated;
  • the selecting unit is configured to determine the service attribute and/or management state of each cell based on the identifier of each cell, and select a cell matching the updated state attribute of the terminal based on the service attribute and/or management state of each cell.
  • the network node further includes a first sending unit configured to send the relevant information of the cell to the terminal.
  • an embodiment of the present application further provides a base station, where the base station includes a third receiving unit, a first processing unit, and a second sending unit; wherein,
  • the third receiving unit is configured to receive a first message sent by the terminal, where the first message is used to request the establishment of a connection;
  • the first processing unit is configured to parse the first message, obtain the content contained in the first message, and establish a connection with the data network node based on the content;
  • the second sending unit is configured to send a second message for responding to the first message to the terminal.
  • the first message further includes message content for random access, where the message content is the first message content in the two-step random access.
  • the second sending unit is further configured to send a first system message to the terminal, where the first system message includes at least one of the following information:
  • the second sending unit is further configured to send a second system message to the terminal, where the second system message includes indication information, where the indication information is used to indicate that no A random access procedure needs to be performed.
  • the content included in the first message includes all or part of the AS and NAS information of the connection establishment;
  • NAS class information is explicitly defined
  • NAS class information includes at least one of the following:
  • the identifier of the terminal The identifier of the terminal, the capability information of the terminal, the network slice identifier, the address of the data network node, the service attribute information, and the cause value corresponding to the message.
  • the first processing unit is configured to obtain information of the terminal according to the identifier of the terminal, and the information of the terminal at least includes subscription information; the QoS information corresponding to the terminal, determine wireless parameter configuration information according to the QoS information, and establish a connection with the data network node based on the wireless parameter configuration information and the address of the data network node; wherein, the wireless parameter configuration information includes the following At least one of the information: a header compression parameter, a security encryption parameter, and a retransmission parameter.
  • the second message includes at least one of the following information: configuration information of radio resources used by the terminal for data transmission in the cell, the identifier of the terminal in the cell, the address information for communication between the terminal and the data network node.
  • the base station uses a user plane protocol layer to perform data processing
  • the user plane protocol layer includes at least one of the following functions: a header compression function, a security encryption function, and a scheduling function , multiplexing and concatenation functions, semi-static resource configuration, protocol error detection and retransmission functions.
  • an embodiment of the present application further provides a terminal, where the terminal includes: a third sending unit and a fourth receiving unit; wherein,
  • the third sending unit is configured to send a first message for requesting to establish a connection to the base station; the content contained in the first message is used for the base station to establish a connection with a data network node;
  • the fourth receiving unit is configured to receive a second message for responding to the first message.
  • the first message further includes message content for random access, where the message content is the first message content in the two-step random access.
  • the fourth receiving unit is further configured to receive a first system message sent by the base station, where the first system message includes at least one of the following information:
  • the fourth receiving unit is further configured to receive a second system message sent by the base station, where the second system message includes indication information, where the indication information is used to indicate No random access procedure needs to be performed.
  • the content included in the first message includes all or part of the AS and NAS information of the connection establishment;
  • NAS class information is explicitly defined
  • NAS class information includes at least one of the following:
  • the identifier of the terminal The identifier of the terminal, the capability information of the terminal, the network slice identifier, the address of the data network node, the service attribute information, and the cause value corresponding to the message.
  • the second message includes at least one of the following information: configuration information of radio resources used by the terminal for data transmission in the cell, the identifier of the terminal in the cell, the address information for communication between the terminal and the data network node.
  • an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the program is executed by a processor, implements the steps of the network selection method described in the first aspect of the embodiment of the present application; or , and when the program is executed by the processor, the steps of the network access method described in the second aspect or the third aspect of the embodiments of the present application are implemented.
  • an embodiment of the present application further provides a network node, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the implementation of the present application when executing the program Examples are the steps of the network selection method described in the first aspect.
  • an embodiment of the present application further provides a base station, including a memory, a processor, and a computer program stored in the memory and running on the processor, where the processor implements the embodiment of the present application when the processor executes the program The steps of the network access method in the second aspect.
  • an embodiment of the present application further provides a terminal, including a memory, a processor, and a computer program stored in the memory and running on the processor, and the processor implements the embodiment of the present application when the processor executes the program The steps of the network access method described in the third aspect.
  • the network selection method, network access method, and related node equipment provided by the embodiments of the present application include: a network node selects a cell for a terminal that matches a state attribute of the terminal; the cell has a unique service attribute, and /or, the cell has a unique management state; the network node is a base station or the terminal.
  • FIG. 1 is a schematic flowchart 1 of a network selection method according to an embodiment of the present application
  • FIG. 2 is a schematic flowchart 1 of a network access method according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a user plane protocol layer of one layer according to an embodiment of the application.
  • FIG. 4 is a schematic diagram of an interaction flow of a network access method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram 1 of the composition structure of a network node according to an embodiment of the present application.
  • FIG. 6 is a second schematic diagram of the composition and structure of a network node according to an embodiment of the present application.
  • FIG. 7 is a third schematic diagram of the composition structure of a network node according to an embodiment of the present application.
  • FIG. 8 is a schematic diagram of a composition structure of a base station according to an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a composition structure of a terminal according to an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a hardware composition of a communication device according to an embodiment of the present application.
  • Fig. 1 is a schematic flowchart 1 of a network selection method according to an embodiment of the application; as shown in Fig. 1 , the method includes:
  • Step 101 The network node selects a cell for the terminal that matches the state attribute of the terminal; the cell has a unique service attribute, and/or the cell has a unique management state; the network node is a base station or the terminal.
  • the state attribute of the terminal includes a data packet characteristic of the terminal; the data packet characteristic includes a first data packet characteristic and/or a second data packet characteristic; satisfying the first data packet characteristic
  • the length of the data packet with the second data packet characteristic (that is, the size of the data packet) is greater than the length of the data packet satisfying the first data packet characteristic;
  • the network node selects a cell matching the state attribute of the terminal for the terminal, including : in the case that the state attribute of the terminal is the first data packet characteristic, the network node selects, for the terminal, the only cell with an inactive state that matches the first data packet characteristic of the terminal; In the case where the state attribute of the terminal is the second data packet characteristic, the network node selects, for the terminal, a unique cell in the connected state that matches the second data packet characteristic of the terminal.
  • the data packet characteristics of the terminal may include large packet transmission or small packet transmission.
  • the "large packet” in the large packet transmission or the "small packet” in the small packet transmission is related to the data volume of the data to be transmitted. If the data volume meets certain conditions, it can be determined as a "large packet”; correspondingly, if the data does not meet the This condition, or the data satisfies another condition, can be determined as a "small packet”.
  • the large-packet transmission or small-packet transmission is related to the service type; if the service type satisfies a certain service type range, it can be determined to be a large-packet transmission; correspondingly, if the service type does not meet the service type range, or the service type satisfies Another service type range can be determined as small packet transmission.
  • the network node selects the corresponding cell according to the state attribute of the terminal, that is, selects the corresponding cell according to whether the data corresponding to the terminal is large packet transmission or small packet transmission. It can be understood that the selected cell has a single service attribute or a single management state, which can adapt to the state attribute of the terminal and provide services for it.
  • the management state includes a connected state or an inactive state.
  • the management state of the selected cell if the state attribute of the terminal is small packet transmission, the management state of the selected cell only has an inactive state; if the state attribute of the terminal is large packet transmission, the management state of the selected cell only has an active state.
  • the terminal may have two state attributes of large packet transmission and small packet transmission, and the network node may select a cell corresponding to the current state attribute for the terminal based on the current state attribute of the terminal, respectively. It can be understood that if the terminal switches from the state attribute of large packet transmission to the state attribute of small packet transmission, the network node needs to reselect a matching cell for the terminal.
  • the terminal may also have only one state attribute, for example, the terminal only has the state attribute of large packet transmission or small packet transmission, and the network node may select a matching cell for the terminal based on the state attribute only possessed by the terminal.
  • the state attribute of the terminal includes the service attribute of the terminal; and the network node selects a cell matching the state attribute of the terminal for the terminal, including: the network node is: The terminal selects a cell, and the unique service attribute of the cell matches the service attribute of the terminal.
  • the service attribute of the terminal may include a service type, and the selected cell has a single service attribute, which can adapt to the service attribute of the terminal and provide services for it.
  • the network node when the network node is the terminal, the network node selects a cell for the terminal that matches the state attribute of the terminal, including: the terminal is based on each cell
  • the identifier of each cell determines the service attribute and/or management state of each cell, and selects a cell matching the state attribute of the terminal based on the service attribute and/or management state of each cell.
  • the method before the terminal determines the service attribute and/or management state of each cell based on the identifier of each cell, the method further includes: the terminal receives the first system message sent by the base station, The first system message includes at least one of the following information:
  • the above-mentioned at least one kind of information may be identified by a reserved field in the first system message.
  • the terminal can directly identify the service attribute of the cell corresponding to the cell identifier according to the cell identifier (ID).
  • the system message in this embodiment is also more concise, and only the system message related to the function of the cell needs to be provided. If it is a dedicated cell, for example, a cell in a certain factory area, the area number (or identifier) customized by the factory area will be used to replace the Public Land Mobile Network (PLMN, Public Land Mobile Network) of the traditional network, or the slice number (or identifier) of the traditional network will be replaced. PLMN.
  • PLMN Public Land Mobile Network
  • the method further includes: when the state attribute of the terminal changes, the network node reselects a cell for the terminal that matches the changed state attribute of the terminal .
  • the network node when the network node is a base station, the network node reselects a cell for the terminal that matches the changed state attribute of the terminal, including: the The base station receives a message sent by the terminal, and the message includes at least the updated state attribute of the terminal; the base station determines the service attribute and/or management state of each cell based on the identification of each cell, and determines the service attribute and/or management state of each cell based on the service attribute of each cell. And/or the management state selects a cell matching the updated state attribute of the terminal.
  • the method further includes: the base station sending the relevant information of the cell to the terminal.
  • the management state includes a four-layer protocol stack, a three-layer protocol stack or a one-layer protocol stack for data plane layer two management;
  • the four-layer protocol stack includes SDAP layer, PDCP layer, RLC layer and MAC layer;
  • the three-layer protocol stack includes a PDCP layer, an RLC layer and a MAC layer;
  • the one-layer protocol stack includes partial functions of at least one layer in the SDAP layer, the PDCP layer, the RLC layer, and the MAC layer.
  • the management state includes a layer-2 protocol stack or a layer-1 protocol stack for control layer management
  • the two-layer protocol stack includes NAS and RRC layers
  • the one-layer protocol stack includes some functions of the NAS and/or RRC layers.
  • the state attribute of the terminal includes at least one of the following characteristics:
  • the moving speed and/or moving direction and/or moving trajectory of the business are the moving speed and/or moving direction and/or moving trajectory of the business.
  • the network node may also determine the classification of the terminal based on the state attribute of the terminal, and select a matching cell based on the classification of the terminal.
  • different multi-dimensional feature combinations may be selected to classify terminals.
  • the user transmission priority can be sorted according to the service type and the buffer length of the service data; the terminal can be allocated an appropriate cell access and camping policy according to the service type and the moving speed of the service (such as the moving speed of the terminal); or , which can also be based on features such as trajectory pattern, speed of movement, and direction of movement.
  • FIG. 2 is a schematic flowchart 1 of a network access method according to an embodiment of the present application; as shown in FIG. 2 , the method includes:
  • Step 201 the base station receives a first message sent by the terminal, where the first message is used to request the establishment of a connection;
  • Step 202 the base station parses the first message, obtains the content contained in the first message, and establishes a connection with a data network (DN, Data Network) node based on the content;
  • DN Data Network
  • Step 203 The base station sends a second message for responding to the first message to the terminal.
  • the network access method may include: the terminal sends a first message for requesting connection establishment to the base station; the content contained in the first message is used for establishing the connection between the base station and the data network node; in a second message in response to the first message.
  • the first message further includes message content for random access, where the message content is the first message content in the two-step random access.
  • the method further includes: the base station sends a first system message to the terminal, where the first system message includes at least one of the following information:
  • the terminal receives the above-mentioned first system message.
  • the method further includes: the base station sends a second system message to the terminal, where the second system message includes indication information, where the indication information is used to indicate that no A random access procedure is performed.
  • the terminal receives the above-mentioned second system message.
  • the content included in the first message includes all or part of the AS and NAS information of the connection establishment;
  • the NAS class information adopts the explicit definition to replace the definition of the octet string (OCTET STRING);
  • NAS class information includes at least one of the following:
  • the identifier of the terminal The identifier of the terminal, the capability information of the terminal, the network slice identifier, the address of the data network node, the service attribute information, and the cause value corresponding to the message.
  • the first message (ie, the connection establishment request message) is no longer divided into RRC and NAS layers.
  • the establishing a connection with the data network node based on the content includes: the base station obtains information of the terminal according to the identifier of the terminal, and the information of the terminal at least includes a subscription information; determine the QoS information corresponding to the terminal according to the information of the terminal, determine the wireless parameter configuration information according to the QoS information, and establish a connection with the data network node based on the wireless parameter configuration information and the address of the data network node;
  • the wireless parameter configuration information includes at least one of the following information: header compression parameters, security encryption parameters, and retransmission parameters.
  • the second message includes at least one of the following information: configuration information of radio resources used by the terminal for data transmission in the cell, the identifier of the terminal in the cell, the address information for communication between the terminal and the data network node.
  • the base station uses a user plane protocol layer to perform data processing
  • the user plane protocol layer includes at least one of the following functions: a header compression function, a security encryption function, and a scheduling function , multiplexing and concatenation functions, semi-static resource configuration, protocol error detection and retransmission functions.
  • a user plane protocol layer may include: a header compression (ROHO, Robust Header Compression) function, a security (Security) function, a hybrid automatic repeat request (HARQ, Hybrid Automatic Repeat reQuest) function, scheduling (Scheduling)/priority handling (priority handling) function and so on.
  • a header compression (ROHO, Robust Header Compression) function
  • a security (Security) function
  • HARQ Hybrid Automatic Repeat reQuest
  • scheduling scheduling/priority handling (priority handling) function and so on.
  • DRB Data Radio Bearer
  • PBR policy routing
  • the embodiments of the present application can also optimize the protocol architecture, specifically by merging the protocol architecture of the user plane, for example, simplifying the four-layer protocol layer to one protocol layer. It can greatly shorten the data processing delay.
  • the present application can be based on the cell of the user group with the same service characteristics, or even based on the processing of data of the user's cell, and the terminal can directly identify the service attribute of the cell and so on according to the cell identifier.
  • FIG. 4 is a schematic diagram of an interaction flow of a network selection method according to an embodiment of the present application; in this example, the network node is taken as an example for description. As shown in Figure 4, the method includes:
  • Step 301 The base station selects a cell for the terminal that matches the state attribute of the terminal, the cell has a unique service attribute, and/or the cell has a unique management state.
  • Step 302 The terminal sends a first message for requesting connection establishment to the base station corresponding to the selected cell.
  • the first message further includes a message for random access, and the message is the first message in the two-step random access.
  • the first message for requesting connection establishment may be combined with the first message in the two-step random access process.
  • Step 303 The base station parses the first message, obtains the content contained in the first message, and establishes a connection with the data network node based on the content.
  • the first message is no longer divided into two layers: RRC and NAS, and the base station can parse all the contents of the first message, for example, it may include: the identifier of the terminal, the capability of the terminal, the slice identifier, the characteristics of the service, the address of the DN, The reason for initiation, etc.
  • Step 304 The base station sends a second message for responding to the first message to the terminal; the second message may include the identity of the cell where the terminal is located, and the radio resource configuration used by the terminal for data transmission in the cell information, address information of the terminal communicating with the data network node.
  • FIG. 5 is a schematic diagram 1 of the composition structure of a network node according to an embodiment of the application; as shown in FIG. 5 , the network node includes a selection unit 31 configured to select a cell matching the state attribute of the terminal for the terminal; the cell has a unique service attribute, and/or the cell has a unique management state; the network node is a base station or the terminal.
  • the management state includes a connected state or an inactive state.
  • the management state includes a four-layer protocol stack, a three-layer protocol stack or a one-layer protocol stack for data plane layer two management;
  • the four-layer protocol stack includes SDAP layer, PDCP layer, RLC layer and MAC layer;
  • the three-layer protocol stack includes a PDCP layer, an RLC layer and a MAC layer;
  • the one-layer protocol stack includes partial functions of at least one layer of SDAP, PDCP layer, RLC layer, and MAC layer.
  • the management state includes a layer-2 protocol stack or a layer-1 protocol stack for control layer management
  • the two-layer protocol stack includes a NAS layer and an RRC layer;
  • the one-layer protocol stack includes some functions of the NAS and/or RRC layers.
  • the state attribute of the terminal includes at least one of the following characteristics:
  • the moving speed and/or moving direction and/or moving trajectory of the business are the moving speed and/or moving direction and/or moving trajectory of the business.
  • the state attribute of the terminal includes a data packet characteristic of the terminal;
  • the data packet characteristic includes a first data packet characteristic and/or a second data packet characteristic; satisfying the first data packet characteristic The length of the data packet with the second data packet characteristic is greater than the length of the data packet satisfying the first data packet characteristic;
  • the selection unit 31 is configured to select, for the terminal, the only one with the first data packet characteristic that matches the first data packet characteristic of the terminal when the state attribute of the terminal is the first data packet characteristic.
  • the state attribute of the terminal includes the service attribute of the terminal; the selection unit 31 is configured to select a cell for the terminal, and the only service attribute of the cell is the same as that of the terminal. The service attributes of the terminals are matched.
  • the selection unit 31 is configured to, when the network node is the terminal, determine the service attribute and/or management state of each cell based on the identifier of each cell, and based on the The service attribute and/or management state of each cell selects a cell that matches the state attribute of the terminal.
  • the network node further includes a first receiving unit 33, configured for the selecting unit 31 to determine the service attribute and/or the service attribute of each cell based on the identifier of each cell Before the management state, a first system message sent by the base station is received, where the first system message includes at least one of the following information:
  • the selection unit 31 is further configured to, when the state attribute of the terminal changes, the network node reselects and changes the terminal for the terminal The state attribute of the matching cell.
  • the network node further includes a second receiving unit 34, configured to receive a message sent by the terminal when the network node is a base station, The message includes at least the updated state attribute of the terminal;
  • the selecting unit 31 is configured to determine the service attribute and/or management state of each cell based on the identifier of each cell, and select a cell matching the updated state attribute of the terminal based on the service attribute and/or management state of each cell.
  • the network node further includes a first sending unit 32, configured to send the relevant information of the cell to the terminal.
  • the selection unit 31 in the network node can be, in practical applications, a central processing unit (CPU, Central Processing Unit), a digital signal processor (DSP, Digital Signal Processor), Microcontroller Unit (MCU, Microcontroller Unit) or Programmable Gate Array (FPGA, Field-Programmable Gate Array) is implemented; the first receiving unit 33, the second receiving unit 34 and the first sending unit 32 in the network node are In practical applications, it can be realized by communication modules (including basic communication suites, operating systems, communication modules, standardized interfaces and protocols, etc.) and transceiver antennas.
  • communication modules including basic communication suites, operating systems, communication modules, standardized interfaces and protocols, etc.
  • the network nodes provided in the above-mentioned embodiments perform network selection, only the division of the above-mentioned program modules is used as an example.
  • the internal structure of the network node is divided into different program modules to complete all or part of the processing described above.
  • the network nodes provided in the above embodiments belong to the same concept as the network selection method embodiments, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.
  • FIG. 8 is a schematic diagram of the composition and structure of a base station according to an embodiment of the application; as shown in FIG. 8 , the base station includes a third receiving unit 41, a first processing unit 42 and a second sending unit 43; wherein,
  • the third receiving unit 41 is configured to receive a first message sent by the terminal, where the first message is used to request the establishment of a connection;
  • the first processing unit 42 is configured to parse the first message, obtain the content contained in the first message, and establish a connection with the data network node based on the content;
  • the second sending unit 43 is configured to send a second message for responding to the first message to the terminal.
  • the first message further includes message content for random access, where the message content is the first message content in the two-step random access.
  • the second sending unit 43 is further configured to send a first system message to the terminal, where the first system message includes at least one of the following information:
  • the second sending unit 43 is further configured to send a second system message to the terminal, where the second system message includes indication information, and the indication information is used to indicate No random access procedure needs to be performed.
  • the content included in the first message includes all or part of the AS and NAS information of the connection establishment;
  • NAS class information is explicitly defined
  • NAS class information includes at least one of the following:
  • the identifier of the terminal The identifier of the terminal, the capability information of the terminal, the network slice identifier, the address of the data network node, the service attribute information, and the cause value corresponding to the message.
  • the first processing unit 42 is configured to obtain the information of the terminal according to the identifier of the terminal, and the information of the terminal at least includes subscription information; determine according to the information of the terminal the QoS information corresponding to the terminal, determine wireless parameter configuration information according to the QoS information, and establish a connection with the data network node based on the wireless parameter configuration information and the address of the data network node; wherein, the wireless parameter configuration information includes At least one of the following information: header compression parameters, security encryption parameters, and retransmission parameters.
  • the second message includes at least one of the following information: configuration information of radio resources used by the terminal for data transmission in the cell, the identifier of the terminal in the cell, the address information for communication between the terminal and the data network node.
  • the base station uses a user plane protocol layer to perform data processing
  • the user plane protocol layer includes at least one of the following functions: a header compression function, a security encryption function, and a scheduling function , multiplexing and concatenation functions, semi-static resource configuration, protocol error detection and retransmission functions.
  • the first processing unit 42 in the base station can be implemented by a CPU, DSP, MCU or FPGA in the base station in practical applications; the third receiving unit 41 in the base station and the second sending unit 41 in the base station
  • the unit 43 can be implemented by a communication module (including: a basic communication suite, an operating system, a communication module, standardized interfaces and protocols, etc.) and a transceiver antenna in practical applications.
  • the base station provided in the above-mentioned embodiment performs network access
  • only the division of the above-mentioned program modules is used as an example.
  • the internal structure of the base station is divided into different program modules to complete all or part of the processing described above.
  • the base station and the network access method embodiments provided by the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, which will not be repeated here.
  • FIG. 9 is a schematic diagram of the composition and structure of a terminal according to an embodiment of the present application; as shown in FIG. 9 , the terminal includes: a third sending unit 51 and a fourth receiving unit 52; wherein,
  • the third sending unit 51 is configured to send a first message for requesting connection establishment to the base station; the content contained in the first message is used for the base station to establish a connection with a data network node;
  • the fourth receiving unit 52 is configured to receive a second message for responding to the first message.
  • the first message further includes message content for random access, where the message content is the first message content in the two-step random access.
  • the fourth receiving unit 52 is further configured to receive a first system message sent by the base station, where the first system message includes at least one of the following information:
  • the fourth receiving unit 52 is further configured to receive a second system message sent by the base station, where the second system message includes indication information, and the indication information is used for Indicates that no random access procedure needs to be performed.
  • the content included in the first message includes all or part of the AS and NAS information of the connection establishment;
  • NAS class information is explicitly defined
  • NAS class information includes at least one of the following:
  • the identifier of the terminal The identifier of the terminal, the capability information of the terminal, the network slice identifier, the address of the data network node, the service attribute information, and the cause value corresponding to the message.
  • the second message includes at least one of the following information: configuration information of radio resources used by the terminal for data transmission in the cell, the identifier of the terminal in the cell, the address information for communication between the terminal and the data network node.
  • the third sending unit 51 and the fourth receiving unit 52 in the terminal can pass through a communication module (including: basic communication suite, operating system, communication module, standardized interface and protocol, etc. ) and the transceiver antenna implementation.
  • a communication module including: basic communication suite, operating system, communication module, standardized interface and protocol, etc.
  • FIG. 10 is a schematic diagram of a hardware structure of a communication device according to an embodiment of the application; as shown in FIG. 10 , the communication device includes a memory 62 , a processor 61 and a computer program stored in the memory 62 and running on the processor 61 , the processor 61 implements the steps of the network selection method applied to a network node or base station described in the embodiments of the present application when executing the program.
  • a network interface 63 may also be included in the communication device.
  • the various components in the communication device are coupled together by a bus system 64 .
  • the bus system 64 is used to implement the connection communication between these components.
  • the bus system 64 also includes a power bus, a control bus and a status signal bus.
  • the various buses are designated as bus system 64 in FIG. 10 .
  • memory 62 may be either volatile memory or non-volatile memory, and may include both volatile and non-volatile memory.
  • the non-volatile memory can be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-only memory) Only Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic random access memory), Flash Memory (Flash Memory), Magnetic Surface Memory , CD-ROM, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface memory can be disk memory or tape memory.
  • RAM Random Access Memory
  • SRAM Static Random Access Memory
  • SSRAM Synchronous Static Random Access Memory
  • DRAM Dynamic Random Access Memory
  • SDRAM Synchronous Dynamic Random Access Memory
  • DDRSDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Double Data Rate Synchronous Dynamic Random Access Memory
  • ESDRAM Enhanced Type Synchronous Dynamic Random Access Memory
  • SLDRAM Synchronous Link Dynamic Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • DRRAM Direct Rambus Random Access Memory
  • the memory 62 described in the embodiments of the present application is intended to include, but not be limited to, these and any other suitable types of memory.
  • the methods disclosed in the above embodiments of the present application may be applied to the processor 61 or implemented by the processor 61 .
  • the processor 61 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method can be completed by a hardware integrated logic circuit in the processor 61 or an instruction in the form of software.
  • the above-mentioned processor 61 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like.
  • the processor 61 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of this application.
  • a general purpose processor may be a microprocessor or any conventional processor or the like.
  • the steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a storage medium, and the storage medium is located in the memory 62, and the processor 61 reads the information in the memory 62, and completes the steps of the foregoing method in combination with its hardware.
  • the communication device may be implemented by one or more Application Specific Integrated Circuit (ASIC, Application Specific Integrated Circuit), DSP, Programmable Logic Device (PLD, Programmable Logic Device), Complex Programmable Logic Device (CPLD, Complex Programmable Logic Device), FPGA, general-purpose processor, controller, MCU, Microprocessor (Microprocessor), or other electronic components implemented for performing the aforementioned method.
  • ASIC Application Specific Integrated Circuit
  • DSP Digital Signal processor
  • PLD Programmable Logic Device
  • CPLD Complex Programmable Logic Device
  • FPGA general-purpose processor
  • controller MCU
  • Microprocessor Microprocessor
  • the embodiment of the present application further provides a computer-readable storage medium, such as a memory 62 including a computer program, and the computer program can be executed by the processor 61 of the communication device to complete the steps of the foregoing method.
  • the computer-readable storage medium can be memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disk, or CD-ROM; it can also be various devices including one or any combination of the above memories.
  • the computer-readable storage medium provided by the embodiment of the present application further stores a computer program thereon, and when the program is executed by the processor, implements the steps of the network selection method applied to the network node or the base station described in the embodiment of the present application.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined, or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the coupling, or direct coupling, or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms. of.
  • the unit described above as a separate component may or may not be physically separated, and the component displayed as a unit may or may not be a physical unit, that is, it may be located in one place or distributed to multiple network units; Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may all be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above integration
  • the unit can be implemented either in the form of hardware or in the form of hardware plus software functional units.
  • the aforementioned program may be stored in a computer-readable storage medium, and when the program is executed, execute It includes the steps of the above method embodiments; and the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic disk or an optical disk and other media that can store program codes.
  • the above-mentioned integrated units of the present application are implemented in the form of software function modules and sold or used as independent products, they may also be stored in a computer-readable storage medium.
  • the computer software products are stored in a storage medium and include several instructions for A computer device (which may be a personal computer, a server, or a network device, etc.) is caused to execute all or part of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: a removable storage device, a ROM, a RAM, a magnetic disk or an optical disk and other mediums that can store program codes.

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  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé de sélection de réseau, un procédé d'accès au réseau et un dispositif de noeud associé. Selon le procédé : un noeud de réseau sélectionne, pour un terminal, une cellule qui correspond à un attribut d'état du terminal, la cellule ayant un attribut de service unique et/ou, la cellule ayant un état de gestion unique; et le noeud de réseau est une station de base ou le terminal.
PCT/CN2021/108406 2020-07-27 2021-07-26 Procédé de sélection de réseau, procédé d'accès au réseau et dispositif de noeud associé WO2022022450A1 (fr)

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