Abstract: Embodiments of a channel hole plug structure of 3D memory devices and fabricating methods thereof are disclosed. The memory device includes an alternating layer stack disposed on a substrate, an insulating layer disposed on the alternating dielectric stack, a channel hole extending vertically through the alternating dielectric stack and the insulating layer, a channel structure including a channel layer in the channel hole, and a channel hole plug in the insulating layer and above the channel structure. The channel hole plug is electrically connected with the channel layer. A projection of the channel hole plug in a lateral plane covers a projection of the channel hole in the lateral plane.

Abstract: A service continuity implementation method, a related device, and a system, where a mobility management device may select a 5G gateway for a 5G user equipment handed over to a 4G network, and establish a session with the 5G gateway. The 5G gateway may send a 5G-related parameter to the user equipment in advance. Therefore, after the user equipment moves from the 4G network to a 5G network, service continuity is maintained, that is, a service in the 4G network continues to be maintained in the 5G network.

Abstract: This application provides a location measurement communication method and a communication apparatus. The method includes: sending a first message to an access and mobility management network element, where the first message includes first information associated with a terminal, and the first message indicates to perform location measurement on the terminal; and receiving a second message sent by the access and mobility management network element, where the second message includes second information associated with the terminal and location measurement information of the terminal.

Abstract: This disclosure discloses communication methods and apparatuses. One example method includes: obtaining slice information of a session, sending a first message to a network function repository function network element, and receiving identification information of an intermediate session management function network element from the network function repository function network element. The intermediate session management function network element is configured to manage an intermediate user plane function network element, and the intermediate user plane function network element is configured to forward service data between an access network device to which a terminal is connected and an anchor user plane function network element in response to the terminal moving out of a service area of the anchor user plane function network element and a service area of an anchor session management function network element.

Abstract: A positioning method, applied to a mobility management network element, includes when learning that a terminal device needs to be handed over from a first access network device to a second access network device, sending a first message to a location management network element, where the first message indicates to suspend positioning measurement on the terminal device, and when learning that the terminal device has been handed over to the second access network device, sending a second message to the location management network element, where the second message enables the location management network element to send a first positioning request, and the first positioning request requests to perform positioning measurement on the terminal device.

Abstract: A communication method is applied to a scenario in which a terminal moves from a first preset area of a first network to a second preset area of a second network. The method includes that a first core network device in the first network determines that Evolved Packet System (EPS) fallback of the terminal is triggered, and sends first information to a second core network device in the second network. The first information includes a first identifier or first indication information. The first identifier identifies a first dedicated bearer corresponding to the terminal. The first dedicated bearer includes a voice dedicated bearer or a video dedicated bearer. The first indication information indicates that the terminal falls back to the second network using an EPS fallback procedure.

Abstract: This application provides a communication method, apparatus, and system for a voice service. The method includes: A session management network element determines that a terminal device is to be handed over from a first network to a second network. The session management network element waits until a first moment to send a request message to a mobility management network element in the second network, where the request message is used to request to set up a first bearer for a voice service of the terminal device.

Abstract: A communication method and apparatus, where the method includes: A first mobility management network element in a first network obtains information about N intermediate session management network elements that are capable of serving a terminal in the first network, and determines that a combined intermediate session management network element (which is capable of providing session management in the first network and in a second network) in the N intermediate session management network elements is a first intermediate session management network element corresponding to a first session of the terminal in the first network, such that overall communication efficiency of the network is improved. For example, network address resources are reduced to simplify network planning and deployment complexity, a quantity of nodes in the network is reduced to simplify network operation and maintenance workload, and signaling between the nodes in the network is reduced to reduce network service load.

Abstract: In a method for performing access control on user equipment, a mobility management device receives from an access node device an access type parameter of the user equipment. The access type parameter indicates a radio access type of the user equipment or a type of the access node device. The mobility management device determines, based on the access type parameter, a connection type of the user equipment in accessing a core network, wherein the connection type is either single connectivity or dual connectivity. The mobility management device then performs access control on the user equipment based on the connection type of the user equipment.

Abstract: A service continuity implementation method, a related device, and a system, where when a user equipment is attached to a 2/3G network, a serving node device determines that the user equipment has a 5G capability or a user corresponding to the user equipment is a 5G user. Then, the serving node device selects a 5G gateway for the user equipment, and establishes a session with the 5G gateway. In this way, when the user equipment subsequently moves to a 5G network, the same 5G gateway serves the user equipment, and an address of the user may remain unchanged when the user equipment moves from the 2/3G network to the 5G network, thereby implementing service continuity of the user.

Abstract: A service continuity implementation method, a related device, and a system, where a mobility management device may select a 5G gateway for a 5G user equipment handed over to a 4G network, and establish a session with the 5G gateway. The 5G gateway may send a 5G-related parameter to the user equipment in advance. Therefore, after the user equipment moves from the 4G network to a 5G network, service continuity is maintained, that is, a service in the 4G network continues to be maintained in the 5G network.

Abstract: A bearer modification method and an access network device. The method includes determining, by an access network device, that a terminal device completes a complete registration procedure, or determining that the terminal device does not complete the complete registration procedure, and waiting for the terminal device to complete the complete registration procedure, and modifying, by the access network device, a radio access bearer of the terminal device.