Method, terminal device, and network side device for accessing network side device

An apparatus applied for a terminal device and for a communications network including network slices, the apparatus comprising:

• at least one processor;
• and
• a memory storing instructions, wherein the instructions instruct the at least one processor to perform operations comprising:
• accessing at least one target radio access network (RAN) sub-network based on a service requirement of the terminal device, wherein when accessing the at least one target RAN sub-network, the terminal device first accesses a public RAN sub-network, and then redirects to the at least one target RAN sub-network from the public RAN sub-network;
• and
• communicating with a network device by using the at least one target RAN sub-network, wherein a plurality of RAN sub-networks accessed by the terminal device comprise the at least one target RAN sub-network, wherein a plurality of radio bearers established for the terminal device are mapped to the plurality of RAN sub-networks respectively, wherein the at least one target RAN sub-network corresponds to a core-net (CN) sub-network, wherein the at least one target RAN sub-network and the CN sub-network form a network slice that satisfies the service requirement, wherein the plurality of RAN sub-networks correspond to a plurality of CN sub-networks respectively, wherein the plurality of RAN sub-networks and the plurality of CN sub-networks form a plurality of network slices respectively, wherein the plurality of network slices use a uniform mobility management manner for the terminal device, wherein the uniform mobility management manner comprises a uniform mobility management function for a plurality of terminal devices, wherein the at least one target RAN sub-network comprises at least one of the following:
• a physical layer protocol layer, a media access control protocol layer, a radio link control protocol layer, or a packet data convergence protocol layer, and wherein the at least one target RAN sub-network shares one or more of the following functions with other RAN sub-network:
• a scheduling function of a MAC layer protocol, a function of multiplexing, a function of demultiplexing, a function of random access, a function of HARQ control, or a function of logical channel prioritization;
• wherein the accessing at least one target RAN sub-network based on a service requirement of the terminal device includes:
• determining, by the terminal device, the at least one target RAN sub-network based on the service requirement;
• detecting, by the terminal device, a synchronization signal of the at least one target RAN sub-network;
• and
• accessing, by the terminal device, the at least one target RAN sub-network based on the synchronization signal.

A communication method for a communications network including network slices, the method comprising:

• providing access, by a network device, at least one target radio access network (RAN) sub-network based on a service requirement of a terminal device, to the terminal device;
• wherein the at least one target RAN sub-network is determined based on the service requirement, and the at least one target RAN sub-network is accessed based on a synchronization signal of the at least one target RAN sub-network, and wherein when accessing the at least one target RAN sub-network, the terminal device first accesses a public RAN sub-network, and then redirects to the at least one target RAN sub-network from the public RAN sub-network;
• and
• communicating, by the network device, with the terminal device by using the at least one target RAN sub-network, wherein a plurality of RAN sub-networks accessed by the terminal device comprise the at least one target RAN sub-network, wherein a plurality of radio bearers established for the terminal device are mapped to the plurality of RAN sub-networks respectively, wherein the at least one target RAN sub-network corresponds to a core-net (CN) sub-network, wherein the at least one target RAN sub-network and the CN sub-network form a network slice that satisfies the service requirement, wherein the plurality of RAN sub-networks correspond to a plurality of CN sub-networks respectively, wherein the plurality of RAN sub-networks and the plurality of CN sub-networks form a plurality of network slices respectively, wherein the plurality of network slices use a uniform mobility management manner for the terminal device, wherein the uniform mobility management manner comprises a uniform mobility management function for a plurality of terminal devices, wherein the at least one target RAN sub-network comprises at least one of the following:
• a physical layer protocol layer, a media access control protocol layer, a radio link control protocol layer, or a packet data convergence protocol layer, and wherein the at least one target RAN sub-network shares one or more of the following functions with other RAN sub-network:
• a scheduling function of a MAC layer protocol, a function of multiplexing, a function of demultiplexing, a function of random access, a function of HARQ control, or a function of logical channel prioritization.

An apparatus applied for a network device and for a communications network including network slices, the apparatus comprising:

• at least one processor;
• and
• a memory storing instructions, wherein the instructions instruct the at least one processor to perform operations comprising:
• providing access, at least one target radio access network (RAN) sub-network based on a service requirement of a terminal device, to the terminal device;
• wherein the at least one target RAN sub-network is determined based on the service requirement, and the at least one target RAN sub-network is accessed based on a synchronization signal of the at least one target RAN sub-network, and wherein when accessing the at least one target RAN sub-network, the terminal device first accesses a public RAN sub-network, and then redirects to the at least one target RAN sub-network from the public RAN sub-network;
• and
• communicating, with the terminal device by using the at least one target RAN sub-network, wherein a plurality of RAN sub-networks accessed by the terminal device comprise the at least one target RAN sub-network, wherein a plurality of radio bearers established for the terminal device are mapped to the plurality of RAN sub-networks respectively, wherein the at least one target RAN sub-network corresponds to a core-net (CN) sub-network, wherein the at least one target RAN sub-network and the CN sub-network form a network slice that satisfies the service requirement, wherein the plurality of RAN sub-networks correspond to a plurality of CN sub-networks respectively, wherein the plurality of RAN sub-networks and the plurality of CN sub-networks form a plurality of network slices respectively, wherein the plurality of network slices use a uniform mobility management manner for the terminal device, wherein the uniform mobility management manner comprises a uniform mobility management function for a plurality of terminal devices, wherein the at least one target RAN sub-network comprises at least one of the following:
• a physical layer protocol layer, a media access control protocol layer, a radio link control protocol layer, or a packet data convergence protocol layer, and wherein the at least one target RAN sub-network shares one or more of the following functions with other RAN sub-network:
• a scheduling function of a MAC layer protocol, a function of multiplexing, a function of demultiplexing, a function of random access, a function of HARQ control, or a function of logical channel prioritization.