JP2021073764A - Communication method, device, and system - Google Patents

Abstract

To provide a communication method, a device, and a system that allow a terminal to perform appropriate subsequent processing even when signaling of a core network device is not received.SOLUTION: A communication method includes the steps of: receiving, from a core network device by a first access network device, signaling destined to a terminal; transmitting, by the first access network device, a paging message to a second access network device; and receiving, from the second access network device, first instruction information indicating that the terminal is connected to the second access network device.SELECTED DRAWING: Figure 3

Description

The present invention relates to the field of communication technology and, in particular, to communication methods, devices and systems.

In a wireless communication system, a terminal may be connected to a core network (Core Network, CN) by using a radio access network (RAN). For example, the terminal may connect to the core network device in CN by using the access network device in RAN. By using an access network device, the core network device may send signaling to the terminal and receive the corresponding response. However, when the terminal moves out of the coverage of the access network device, the terminal does not receive the signaling of the core network device and therefore cannot perform appropriate subsequent processing.

Embodiments of the present invention describe a communication method that solves the problem that the terminal cannot perform appropriate subsequent processing when the signaling of the core network device is not received.

According to one embodiment, an embodiment of the present invention provides a communication method, the method is applied to a communication system, the communication system includes a paging area, which includes at least a first access network device and a second access network device. There is an access network device, there is a link between the first access network device and the core network device, and the method is: directed to the terminal by the first access network device. The step of receiving signaling from the core network device; the step of sending the first paging message to the second access network device by the first access network device, where the first paging message sends the terminal. Steps used to call; step of sending a second paging message to the terminal by the second access network device; step of receiving a paging response from the terminal by the second access network device; and The step of transmitting the first instruction information to the first access network device by the second access network device, and the first instruction information indicates that the terminal is connected to the second access network device. Includes steps used to indicate. In this embodiment of the invention, after receiving the signaling directed to the terminal transmitted by the core network device, the first access network device sends the first paging message to the second access network device. If you send to and receive the first instruction message sent by the second access network device, you can know that the terminal is connected to the second access network device, and therefore. Perform the appropriate subsequent processing.

At least a first access network device and a second access network device exist in the paging area: A first access network device and a second access network device exist in the paging area. That is, or there may be another access network device in the paging area in addition to the first access network device and the second access network device. The presence of a first access network device and a second access network device in the paging area means that all or some of the cells of the first access network device and all of the second access network devices. Or it means that some cells belong to the paging area.

The signaling may include at least one of the following: non-access stratum NAS signaling, radio bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting signaling, tracking signaling, or location service LCS. Signaling. For example, the first access network device receives a context modification command from the core network device and sends an RRC reconfiguration command to the terminal based on the context modification command to modify the terminal's context. You may. In another embodiment, the first access network device may receive the NAS signaling from the core network device and subsequently transfer the NAS signaling to the terminal.

In a possible design, the first access network device may send a first paging message to a second access network device if no paging response is received from the terminal. In a possible design, the first access network device may receive the terminal information instruction message from the second access network device, which carries the first instruction information; or the first access. The network device may receive the terminal context request message from the second access network device, and the terminal context request message carries the first instruction information.

In a possible design, the first access network device may further transmit the second instruction information to the core network device, which causes the terminal to go out of coverage of the first access network device. Used to indicate that it has moved. For example, the first access network device may send a response message to the signaling to the core network device, which carries the second instruction information. In another embodiment, the first access network device may send a signaling failure message to the core network device, the signaling failure message carries the second instruction information, and the signaling is successfully transmitted. Used to indicate that it is not.

The second instruction information may include one or all of the information about the second access network device and the status information of the terminal, and the status information is used to indicate the status of the terminal. For example, the status of the terminal may be: When the terminal moves within the paging area, the interface between the terminal and the core network device remains on the first access network device. In another embodiment, the status of the terminal may be: the terminal is able to maintain a connection context and perform cell reselection based on mobility. For another embodiment, the status of the terminal may be a lightly connected mode, which is an inactive mode, a deactivated mode, a low active mode, a low overhead mode. And so on.

In a possible implementation, after sending the first instruction information to the first access network device, the second access network device may further receive signaling directed to the terminal from the core network device. Good. Optionally, the second access network device may further send a path switching request to the core network device before receiving the signaling.

In a possible design, the first access network device may instead send signaling to the second access network device. For example, the first access network device may send a context transfer message to the second access network device, which carries the signaling.

In a possible implementation, the first access network device may further receive the first signaling processing instruction from the second access network device, and the first signaling processing instruction is successfully signaled. Or used to indicate failure. For example, the first access network device may receive a context transfer acquisition message from the second access network device, which carries the first signaling processing instruction. Further, the first access network device may send the second signaling processing instruction to the core network device, and the second signaling processing instruction indicates that the signaling processing is successful or unsuccessful. Used to indicate.

In a possible design, the second access network device may instead send signaling to the terminal.

According to another embodiment, an embodiment of the present invention provides a communication method, the method is applied to a communication system, the communication system includes a paging area, which includes at least a first access network device and a first access network device. 2 There is an access network device, there is a link between the first access network device and the core network device, and the method is: Signaling directed to the terminal by the core network device. To the first access network device; the step of receiving the second instruction information from the first access network device by the core network device, and the second instruction information is the first access by the terminal. • Includes a step used to indicate that the network device has moved out of coverage; and a step of transmitting signaling to the second access network device by the core network device. In this embodiment of the invention, after transmitting the signaling to the first access network device, the core network device can receive the second instruction information from the first access network device. And therefore it is possible to know that the terminal has moved out of the coverage of the first access network device and to send signaling to the second access network device for appropriate subsequent processing.

At least a first access network device and a second access network device exist in the paging area: A first access network device and a second access network device exist in the paging area. That is, or there may be another access network device in the paging area in addition to the first access network device and the second access network device. The presence of a first access network device and a second access network device in the paging area means that all or some of the cells of the first access network device and all of the second access network devices. Or it means that some cells belong to the paging area.

The signaling may include at least one of the following: non-access stratum NAS signaling, radio bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting signaling, tracking signaling, or location service LCS. Signaling.

In a possible design, the core network device may receive a response message to the signaling from the first access network device, the response message containing the second instruction information; or the core network device , The signaling failure message may be received from the first access network device, and the signaling failure message is used to carry the second instruction information and to indicate that the signaling has not been successfully transmitted.

The second instruction information may include one or all of the information about the second access network device and the status information of the terminal, and the status information is used to indicate the status of the terminal. For example, the status of the terminal may be: When the terminal moves within the paging area, the interface between the terminal and the core network device remains on the first access network device. In another embodiment, the status of the terminal may be: the terminal is able to maintain a connection context and perform cell reselection based on mobility. For another embodiment, the status of the terminal may be in a mildly connected mode.

In a possible design, after receiving the second instruction information from the first access network device, the core network device may further transmit signaling to the second access network device. For example, the core network device may send signaling to the second access network device based on information about the second access network device. In another embodiment, the core network device may send signaling to the second access network device after receiving the path switching request sent by the second access network device.

According to yet another embodiment, an embodiment of the present invention provides a first access network device, which implements the actions of the first access network device in the above method example. Has the function of The functionality may be implemented in hardware or by running the corresponding software by using the hardware. Hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the first access network device includes a processor, which is configured to allow the first access network device to perform the corresponding function in the above manner. In addition, the first access network device may further include a communication interface, which supports communication between the first access network device and the second access network device or core network device. It is configured to do. In addition, the first access network device may further include memory, the memory is configured to be coupled to a processor, and the memory stores program instructions and data required by the first access network device.

According to yet another embodiment, the embodiment of the present invention provides a second access network device, which implements the actions of the second access network device in the above method example. Has a function. The functionality may be implemented in hardware or by running the corresponding software by using the hardware. Hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the second access network device includes a processor, which is configured to allow the second access network device to perform the corresponding function in the above manner. Further, the second access network device may further include a communication interface, a transmitter, and a receiver, and the communication interface may further include a second access network device and a first access network device or a core network. • It is configured to support communication with the device, and the transmitter and receiver are configured to support communication between the second access network device and the terminal. In addition, the second access network device may further include memory, the memory is configured to be coupled to a processor, and the memory stores program instructions and data required by the second access network device.

According to yet another embodiment of the present invention, the embodiment provides a core network device, which has the function of implementing the actions of the core network device in the above method example. .. The functionality may be implemented in hardware or by running the corresponding software by using the hardware. Hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the core network device includes a processor, which is configured to allow the core network device to perform the corresponding function in the above manner. In addition, the core network device may further include a communication interface so that the communication interface supports communication between the core network device and the first access network device or the second access network device. It is composed of. In addition, the core network device may further include memory, the memory is configured to be coupled to a processor, and the memory stores program instructions and data required by the core network device.

According to another embodiment, the embodiment of the present invention provides a communication system, the system includes a first access network device and a second access network device in the above embodiment, or the system is the above embodiment. Includes a first access network device, a second access network device, and a core network device in.

According to yet another embodiment, embodiments of the present invention provide a computer storage medium configured to store computer software instructions used by the first access network device described above. Software instructions include programs designed to perform the above forms.

According to yet another embodiment, embodiments of the present invention provide a computer storage medium configured to store computer software instructions used by the second access network device described above. Software instructions include programs designed to perform the above forms.

According to yet yet another embodiment, an embodiment of the present invention provides a computer storage medium configured to store computer software instructions used by the core network devices described above. Software instructions include programs designed to perform the above forms.

Compared to the prior art, in the solution in the embodiments of the present invention, the first access network device sends a first paging message after receiving the signaling directed to the terminal transmitted by the core network device. Know that the terminal is connected to the second access network device when it sends to the second access network device and receives the first instruction message sent by the second access network device. It is possible, and therefore perform appropriate subsequent processing.

In order to more clearly explain the technical solution in the embodiment or the prior art of the present invention, the accompanying drawings required to explain the embodiment or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description show some embodiments of the present invention, and one of ordinary skill in the art may further derive other drawings from these attached drawings without any creative effort.

FIG. 1 is a schematic representation of possible application scenarios according to embodiments of the present invention;

FIG. 2 is a schematic diagram of a possible network architecture according to an embodiment of the present invention;

FIG. 3 is a schematic communication diagram of a communication method according to an embodiment of the present invention;

FIG. 4 is a schematic communication diagram of another communication method according to the embodiment of the present invention;

FIG. 5 is a schematic communication diagram of still another communication method according to the embodiment of the present invention;

FIG. 6 is a schematic communication diagram of still another communication method according to the embodiment of the present invention;

FIG. 7 is a schematic block diagram of a first access network device according to an embodiment of the present invention;

FIG. 8 is a schematic block diagram of a second access network device according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an access network device according to an embodiment of the present invention;

FIG. 10 is a schematic block diagram of a core network device according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a core network device according to an embodiment of the present invention;

FIG. 12 is a schematic block diagram of a terminal according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

In order to further clarify the purpose, technical solution, and advantage of the embodiment of the present invention, the technical solution in the embodiment of the present invention related to the accompanying drawings in the embodiment of the present invention will be described below.

The network architecture and service scenarios described in the embodiments of the present invention are intended to more clearly describe the technical solutions in the embodiments of the present invention, and are provided in the embodiments of the present invention. It does not constitute any limitation on any technical solution. Those skilled in the art will appreciate that with the development of network architectures and the emergence of new service scenarios, the technical solutions provided in embodiments of the present invention will also be applicable to similar technical problems. Is possible.

Hereinafter, some possible application scenarios and network architectures to which the embodiments of the present invention are applicable will be described first with reference to FIGS. 1 and 2.

FIG. 1 shows one possible applicable application scenario according to an embodiment of the present invention. By using a wireless access network and a core network, as shown in Figure 1, the terminal can be an IP Multimedia System (IMS) network or a Packet Switched Streaming Service, Connects to an operator's Internet Protocol (IP) service network, such as a PSS (abbreviated PSS) network. The technical solutions described in the present invention are Long Term Evolution (LTE) systems, or other wireless communication systems that use various wireless access technologies, such as Code Division Multiple. Access, CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), and Single Carrier It may be applicable to systems that use access technologies such as Single Carrier Frequency Division Multiple Access (SC-FDMA). Further, the technical solution may be applicable to successor development systems of LTE systems such as 5th Generation (5G) systems. For clarity, only LTE systems are used as an example for illustration here. In LTE systems, the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) is used as the radio access network, and the Evolved Packet Core (EPC) is the core network. Used as. The terminal connects to the IMS network by using E-UTRAN and EPC. It should be noted that the names of base stations and terminals may change if the solutions in the embodiments of the present invention are applied to 5G systems or other systems that may emerge in the future. However, that does not affect the implementation of the solutions in the embodiments of the present invention.

Based on the application scenario described above, FIG. 2 shows a possible network architecture according to an embodiment of the present invention. As shown in Figure 2, the network architecture includes core network devices, terminals, and multiple access network devices. The access network device 101 and the access network device 102 are in the same paging area, for example, the first paging area. The access network device 103 is in another paging area, such as a second paging area. Access network device 101 may be referred to as an anchor access network device in the first paging area. Anchor access network devices are access network devices that store contextual information about the terminal device and maintain a connection between the terminal and the core network device, and the core network device and the first. 1 Connect to any other access network device in the paging area. In FIG. 2, terminal 201 is in a lightly connected mode. The terminal is in a mildly connected mode: if the interface between the terminal and the core network device remains on the anchor access network device, and the terminal moves within a particular area. Means that it is not necessary to notify the anchor access network device, but it is necessary to notify the anchor access network device when moving out of the service area of a specific area. For example, terminal 201 may maintain an interface between terminal 201 and the core network device by using access network device 101 in the first paging area, and terminal 201 may use first paging. -It is not necessary to notify the access network device 101 when moving within the area, and the terminal 201 notifies the access network device 101 only when moving outside the service area of the first paging area. To do.

In the embodiments of the present invention, the lightly connected mode may be a sub-mode of Radio Resource Control (RRC) connected mode, an enhanced mode of idle mode, or an independent mode. Good. Lightly connected modes may have different names. For example, mildly connected modes may be referred to as inactive mode, deactivated mode, low active mode, low overhead mode, and the like. The name or form of the lightly connected mode is not limited in the embodiments of the present invention. For the sake of brevity, the first mode may be used below to describe the mildly connected mode.

The paging area in the embodiments of the present invention may be referred to as a cell set, and the cell set is managed by an access network device. When moving within a cell set, the terminal does not need to notify the access network device that sets the paging area for that terminal; when moving out of the cell set, the terminal does not need to notify the access network. -You need to notify the device. If the access network device in the cell set needs to communicate with the terminal device, the access network device needs to call the terminal in every cell contained in the cell set. The paging area is referred to as a terminal registration area, a terminal light connection area, a terminal management area, a terminal access network registration area, a terminal tracking area, a terminal access network tracking area, etc. It should be noted that it is also good. This is not limited to the embodiments of the present invention.

In embodiments of the present invention, the terms "network" and "system" are usually used alternatives, but those skilled in the art can understand their meaning. The terminal according to the embodiment of the present invention is a device having a wireless communication function such as a mobile device, an in-vehicle device, a wearable device, a computing device, or another processing device connected to a wireless modem, and a user device (User). It may include various formats such as Equipment, UE), Mobile Station (MS), terminal device (terminal device), and the like. For the sake of brevity, the above devices are collectively referred to as terminals. An access network device according to an embodiment of the present invention is a device that is deployed in a radio access network and is configured to provide wireless communication functionality to a terminal. For example, the access network device may be a base station (BS), which may include various forms such as macro base stations, micro base stations, relay stations, access points, and the like. In systems that use different wireless access technologies, devices that function as base stations may have different names. For example, the device is referred to as evolved NodeB (evolved NodeB, eNB or eNodeB) in Long Term Evolution (LTE) systems, or Node B (NodeB) in third generation (3G) communication systems. ). For the sake of brevity, all devices that provide wireless communication capabilities to terminals are collectively referred to as access network devices in embodiments of the present invention. The core network device in the embodiment of the present invention may include different devices in different systems. For example, in an LTE system, the core network device may include a Mobility Management Entity (MME) or a Serving Gateway (SGW); in a 3G communication system, the core network device may include. , Serving GPRS Support Node (SGSN) or Gateway GPRS support Node (GGSN). GPRS is an abbreviation for General Packet Radio System. Core network devices in embodiments of the present invention may include core network devices in 5G systems or other systems that may emerge in the future.

Hereinafter, embodiments of the present invention based on the above general features of the embodiments of the present invention will be described in more detail.

The existing solution is when the terminal is connected to the core network device by using the access network device and the terminal moves out of the coverage of the access network device (eg, handover. When the terminal is not connected to the destination access network device in the process, or when the terminal moves into the coverage of another access network device in the same paging area in a mildly connected mode. ), The terminal does not receive the core network device signaling and therefore cannot perform appropriate subsequent processing.

In view of this point, embodiments of the present invention provide communication methods and devices and systems based on the methods. The method applies to communication systems, which include a paging area, where at least a first access network device and a second access network device exist, with the first access network device. There is a link to and from the core network device, and the method is: The step of receiving the signaling directed to the terminal from the core network device by the first access network device; the first access network device. The step of sending the first paging message by the device to the second access network device, the first paging message is used to call the terminal, step; by the second access network device. The step of sending the second paging message to the terminal; the step of receiving the paging response from the terminal by the second access network device; and the first access of the first instruction information by the second access network device. A step of transmitting to a network device, wherein the first instructional information includes a step used to indicate that the terminal is connected to a second access network device. In an embodiment of the invention, after receiving the signaling directed to the terminal transmitted by the core network device, the first access network device sends the first paging message to the second access network device. If you send and receive the first instruction message sent by the second access network device, it is possible and therefore appropriate to know that the terminal is connected to the second access network device. The subsequent processing is executed.

It should be noted that the second access network device may be any access network device within the paging area other than the first access network device.

As you can see, there are at least a first access network device and a second access network device in the paging area: a first access network device and a second access network device in the paging area. The device may be present, or another access network device may be present in the paging area in addition to the first access network device and the second access network device. The presence of a first access network device and a second access network device in the paging area means that all or some of the cells of the first access network device and all of the second access network devices. Or it means that some cells belong to the paging area.

Hereinafter, the solutions provided in the embodiments of the present invention will be described in connection with FIG. The method in Figure 3 applies to communication systems. The communication system includes a paging area, in which at least a first access network device and a second access network device exist, and between the first access network device and the core network device. There is a link in. The method comprises parts 301-305.

Part 301. The core network device sends the signaling to the first access network device.

Signaling is signaling directed to a terminal.

In a specific example, the signaling may include at least one of the following: Non-Access Stratum (NAS) signaling, wireless bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting. Signaling, tracking signaling, or location service (LCS) signaling. The radio bearer management signaling may include at least one of radio bearer establishment signaling, radio bearer modification signaling, or radio bearer deletion signaling.

It is possible to understand that after receiving the signaling directed to the terminal from the core network device, the first access network device needs to send the signaling to the terminal. For example, after receiving a context modification command from a core network device, the first access network device sends an RRC reconfiguration command to the terminal based on the context modification command to modify the terminal's context. You may. In another embodiment, the first access network device may transfer the NAS signaling to the terminal after receiving the NAS signaling from the core network device. However, the first access network device only knows that the terminal is in the paging area before the first access network device sends the signaling to the terminal. Therefore, the first access network device needs to start paging to the terminal in the paging area so that the terminal connects to the network. For example, the first access network device may initiate paging directly to the terminal, or it may cause the second access network device to initiate paging to the terminal.

Part 302. The first access network device sends the first paging message to the second access network device, and the first paging message is used to call the terminal.

In a specific example, the first access network device may send a first paging message to a second access network device if no paging response is received from the terminal. For example, after receiving signaling from the core network device, the first access network device may first send a third paging message to the terminal, and no paging response is received from the terminal within a certain period of time. In some cases, the first paging message may be sent to the second access network device. Optionally, the terminal may further receive the configuration information sent by the first access network device before receiving the third paging message sent by the first access network device. The configuration information is used to instruct the terminal to enter the first mode. The implementation of selective parts is similar to that in Part 701 of FIG. 7, and a detailed description of Part 701 may be referred to. Details are not described here.

Part 303. The second access network device sends a second paging message to the terminal.

In a specific example, the terminal may further receive the configuration information transmitted by the first access network device before receiving the second paging message transmitted by the second access network device. The configuration information is used to instruct the terminal to enter the first mode. The implementation of this embodiment is similar to that in Part 701 of FIG. 7, and a detailed description of Part 701 may be referenced. Details are not described here.

Part 304. The second access network device receives the paging response from the terminal.

In a specific example, the second access network device may receive a location update message, an RRC connection restore request message, an RRC connection reestablishment message, or an RRC connection resume message from a terminal, and may receive a location update message. A message, an RRC connection restore request message, an RRC connection reestablishment message, or an RRC connection resume message carries a paging response. After receiving the paging response sent by the terminal, the second access network device may determine based on the paging response that the terminal is currently in the coverage of the second access network device. ..

Part 305. The second access network device sends the first instruction information to the first access network device, and the first instruction information is used to indicate that the terminal is connected to the second access network device. Will be done. For example, the second access network device may send the first instruction information to the first access network device based on the paging response sent by the terminal.

In a specific example, the first instruction information may include a terminal identifier.

In a specific example, the second access network device may send a terminal information instruction message to the first access network device, which carries the first instruction information; or the second access network device. The network device may send a terminal context request message to the first access network device, which carries the first instruction information. In this case, the first access network device may determine that the terminal is currently within the coverage of the second access network device based on the terminal information instruction message or the terminal context request message. ..

In a specific example, a terminal information instruction message or a terminal context request message may further carry a terminal data instruction, and the data instruction is used to indicate whether the terminal has data to be transmitted. ..

Optionally, the method in FIG. 3 may further include parts 306 and 307, or the method in FIG. 3 may further include part 308.

Part 306. The first access network device sends the second instruction information to the core network device, and the second instruction information is used to indicate that the terminal has moved out of the coverage of the first access network device. To.

In a specific example, the first access network device may send a response message to the signaling to the core network device, which carries the second instruction information; or the first access network device. May send a signaling failure message to the core network device, which is used to carry the second instruction information and to indicate that the signaling has not been successfully transmitted.

In a specific example, the second instruction information may include information about the second access network device or terminal status information, and the terminal status information is used to indicate the terminal status. For example, the status of the terminal: If the terminal moves within the paging area, the interface between the terminal and the core network device may remain on the first access network device. .. In another embodiment, the terminal status may be: the terminal maintains a connection context and performs cell reselection based on mobility. For another embodiment, the status of the terminal may be in a mildly connected mode.

Part 307. The core network device sends the signaling to the second access network device.

In a specific example, the second access network device further sends a path switching request to the core network device before the core network device sends the signaling to the second access network device. You may.

In a specific example, if the second instruction information includes information about the second access network device, the core network device signals the second access network device based on the information about the second access network device. It may be sent to the device. In this case, the core network device may determine that the terminal has moved into the coverage of the second access network device based on the information about the second access network device, and therefore signaling. May be sent directly to the second access network device.

In a specific example, if the second instruction information includes terminal status information, the core network device makes a path switching request to the second access network before sending the signaling to the second access network device. -You may receive more from the device. In this case, the core network device determines the status of the terminal based on the status information of the terminal and signals after receiving the path switching request sent by the second access network device. 2 May be sent to an access network device.

In a specific example, the second access network device may further transmit signaling to the terminal.

When the first access network device sends the second instruction information to the core network device, the core network device learns that the terminal has moved out of the coverage of the first access network device. And the signaling directed to the terminal can be sent to the second access network device so that the signaling of the core network device is successfully transmitted and appropriate subsequent processing is performed. Can be known from the above.

Part 308. The first access network device sends signaling to the second access network device.

In a specific example, the first access network device may send a context transfer message to the second access network device, the context transfer message carrying signaling.

In a specific example, the first access network device may further receive the first signaling processing instruction from the second access network device, and the first signaling processing instruction may be successful in signaling. Used to indicate failure. Further, the first access network device may send the second signaling processing instruction to the core network device, and the second signaling processing instruction indicates that the signaling processing is successful or unsuccessful. Used to indicate.

In a possible implementation, the first access network device may receive the context transfer acknowledgement message from the second access network device, which carries the first signaling processing instruction.

In a specific example, the second access network device may further transmit signaling to the terminal.

If the terminal moves from the first access network device to the second access network device, the first access network device may send signaling to the second access network device, thereby the first. 2 It is possible to know from the above that the access network device sends signaling to the terminal. In this way, the signaling of the core network device can be successfully transmitted and appropriate subsequent processing can be performed.

Based on the method in FIG. 3, the solutions provided in the embodiments of the present invention related to FIG. 4 will be further described below. For the same or similar contents of the method in FIG. 4 as in the method in FIG. 3, refer to the detailed explanation in FIG. Details will not be explained here again.

Part 401. The core network device sends the signaling to the first access network device.

Signaling is signaling directed to a terminal.

See the detailed description of Part 301 in Figure 3 for the relevant content of signaling. Details will not be explained here again.

Part 402. The first access network device sends a third paging message to the terminal.

In a specific example, the terminal may further receive the configuration information transmitted by the first access network device before receiving the third paging message transmitted by the first access network device. , The configuration information is used to instruct the terminal to enter the first mode. The implementation of this embodiment is similar to that in Part 701 of FIG. 7, and a detailed description of Part 701 may be referenced. Details are not described here.

Part 403. The terminal sends a second paging response to the first access network device.

Part 404. The first access network device sends a signaling success message to the core network device.

After receiving the second paging response from the terminal, the first access network device may further initiate a reconfiguration procedure for the terminal based on the signaling.

It should be noted that Part 403 and Part 404 are selective parts. If parts 403 and 404 are executed, the method in FIG. 4 ends and parts 405 to 411 are no longer executed. It can be understood that if Part 405 and Part 406 are executed before Part 403 is executed, then Part 407-411 will no longer be executed after Part 403 and Part 404 are executed. is there. The reason for this is that the terminal sends the second paging response to the first access network device in part 403, and usually does not send the first paging response to the second access network device. ..

If part 403 and part 404 are not executed, part 405 is executed next.

Part 405. The first access network device sends the first paging message to the second access network device, and the first paging message is used to call the terminal.

Part 406. The second access network device sends a second paging message to the terminal.

In a specific example, the terminal may further receive the configuration information transmitted by the first access network device before receiving the second paging message transmitted by the second access network device. , The configuration information is used to instruct the terminal to enter the first mode. The implementation of this embodiment is similar to that in Part 701 of FIG. 7, and a detailed description of Part 701 may be referenced. Details are not described here.

Part 407. The terminal sends the first paging response to the second access network device.

Parts 408 and 409 are similar to parts 305 and 306 in FIG. 3, respectively, and a detailed description of parts 305 and 306 may be referenced. Details will not be explained here again.

Part 410. The second access network device sends a path switching request to the core network device.

It should be noted that part 410 is an optional part. Part 410 may or may not be performed if the second instruction information includes information about the access network. Part 410 is executed if the second instruction information includes terminal status information.

Part 411 is similar to Part 307 in FIG. 3, and a detailed description of Part 307 may be referenced. Details will not be explained here again.

In this embodiment of the invention, after receiving signaling directed to the terminal from the core network device, the first access network device sends the paging message to the terminal and the second access network device separately. Send. When the paging response is received from the terminal, the first access network device sends a signaling success message to the core network device. When the first instruction information is received from the second access network device, the first access network device sends the second instruction information to the core network device. After receiving the second instruction information, the core network device can know that the terminal has moved out of the coverage of the first access network device, and therefore signals the second access network device. Send to device. In either case, the core network device signaling can be successfully transmitted, thereby performing appropriate subsequent processing.

Based on the method in FIG. 3, the solutions provided in the embodiments of the present invention related to FIG. 5 will be further described below. For the same or similar content in the method of FIG. 5 as in the method of FIG. 3 or 4, refer to the detailed description of FIG. 3 or 4. Details will not be explained here again.

Parts 501-507 are similar to parts 401-407 in FIG. 4, respectively, and a detailed description of parts 401-407 may be referenced. Details will not be explained here again.

Parts 508 and 509 are similar to parts 305 and 308 in FIG. 3, respectively, and a detailed description of parts 305 and 308 may be referenced. Details will not be explained here again.

In this embodiment of the invention, after receiving signaling directed to the terminal from the core network device, the first access network device sends the paging message to the terminal and the second access network device separately. Send. When the paging response is received from the terminal, the first access network device sends a signaling success message to the core network device. When the instruction information is received from the second access network device, the first access network device sends signaling to the second access network device. In either case, the core network device signaling can be successfully transmitted, thereby performing appropriate subsequent processing.

Embodiments of the present invention further provide communication methods, as well as devices and systems based on the methods. Methods: The terminal receives configuration information from the first access network device; the terminal enters the first mode based on the configuration information; the terminal sends a message to the second access network device. The step of transmitting to, the message carries the first terminal identifier; the step of transmitting the first terminal identifier to the first access network device by the second access network device; and the first access network device. The network device comprises sending a terminal context or terminal hold instruction to the second access network device based on the first terminal identifier. In this embodiment of the invention, after moving from the first access network device to the second access network device, the terminal can transmit the terminal identifier to the second access network device. , Thereby, the second access network device receives the terminal context or terminal hold instruction from the first access network device.

Hereinafter, the solutions provided in the embodiment of the present invention related to FIG. 6 will be described.

Part 601. The terminal receives the configuration information from the primary access network device.

In a specific example, the configuration information includes status instruction information. The terminal may enter the first mode based on the status instruction information.

In a particular example, the configuration information may include one or both of the paging area identifier and the paging area parameter. The terminal may enter the first mode based on one or both of the paging area identifier and the paging area parameter. Hereinafter, the paging area identifier and the paging area parameter will be briefly described.

The paging area identifier is used to identify the serving cell of the terminal in the coverage of the first access network device. The terminal may determine the paging area for the terminal in the first mode based on the paging area identifier. For example, if the terminal paging area identifier in the current serving cell of the first access network device is 1, then the paging area for the terminal in the first mode is paging area 1; the first access network device. If the terminal paging area identifier in the current serving cell of the network device is 2, then the paging area for the terminal in the first mode is paging area 2, and so on. Indeed, there may be other implementations of the specific form of the paging area identifier. This is not limited to this embodiment of the invention.

The paging area parameter is used to determine the paging area information for the terminal in the first mode. For example, the paging area parameter may include a paging area cell list, the paging area cell list contains at least one cell, and the terminal terminals the cells in the paging area cell list. May be used as a paging area for. For another embodiment, the paging area parameter includes a paging area identifier list, the paging area identifier list contains at least one paging area identifier, and the terminal is included in the paging area identifier list. The cell corresponding to the area identifier may be used as the paging area of the terminal.

In a specific example, the configuration information may further include a first terminal identifier, which may be an identifier used by the terminal in the network in which the terminal is currently located. The terminal may store the first terminal identifier.

In a specific example, the configuration information may further include a first terminal identifier and a second terminal identifier. In this case, the first terminal identifier is the identifier used by the terminal in the first standard network, and the second terminal identifier is the identifier used by the terminal in the second standard network. For example, if the terminal is in a first standard network, the terminal may perform paging listening in the paging area of the first standard network by using the first terminal identifier. For another embodiment, if the terminal is in a second standard network, the terminal may perform paging listening in the paging area of the second standard network by using the second terminal identifier. Use a different wireless access technology than the 1st and 2nd standard networks. For example, a first standard network uses first access technology, and a second standard network uses second access technology. Where possible, the first standard network may be an LTE network or a 5G network, and the second standard network may be a network of any standard different from the first standard network.

In this embodiment, the paging area cell list may contain cells of at least two networks of different standards, or the paging area identifier list may contain at least two paging area identifiers, and two paging. -Area identifiers correspond to network cells of different standards.

Part 602. The terminal enters the first mode.

Specifically, after the terminal enters the first mode, the interface between the terminal and the core network device in the first mode remains in the first access network device, and the terminal remains in the paging area. It is not necessary to notify the first access network device when moving, but notify the first access network device when moving out of the paging area.

In a specific example, the terminal may optionally determine the paging area information for the terminal in the first mode based on the paging parameters.

Part 603. The terminal sends a message carrying the first terminal identifier to the second access network device.
For the sake of brevity, the message carrying the first terminal identifier will be referred to hereafter as the first message.

The first message may be used to instruct the second access network device to use the terminal's first terminal identifier. Optionally, the first message may be an RRC connection restore request message, an RRC connection reestablishment message, a location update message, or an RRC connection resume message.

In a specific example, the terminal may send a first message to the second access device when entering the coverage of the second access network device.

In another embodiment, the terminal may send the first message to the second access device when it receives the paging sent by the second access network device. For example, the second access network device is in the paging area of the terminal, and the terminal listens for paging messages sent by the cells of the second access network device. When the terminal receives a paging message to the terminal, the terminal sends the first message to the second access network device. In this embodiment, the first message may carry the paging response of the terminal.

In a possible implementation, the terminal may use the first terminal identifier to listen to the paging message. If the paging message carries the first terminal identifier, the terminal determines that the terminal is called by the second access network device.

In another possible implementation, the configuration information further includes a second terminal identifier. In this case, as described in the specific example in Part 601, the first terminal identifier and the second terminal identifier are identifiers used by the terminals in the first standard network and the second standard network, respectively. Optionally, the first access network device and the second access network device may use the same access technology or different access technologies. For example, the first access network device may use the first access technology, and the second access network device may use the first access technology or the second access technology. In some cases, if the second access network device uses the first access technology, the first access network device sends the first terminal identifier to the second access network device. Accordingly, the terminal currently camping on the second access network device listens for the paging message by using the first terminal identifier. If listening detects that the paging message is carrying the first terminal identifier, the terminal determines that the terminal is called by the second access network device. In another case, if the second access network device uses the second access technology, the first access network device sends the second terminal identifier to the second access network device. Accordingly, the terminal currently camping on the second access network device listens for the paging message by using the second terminal identifier. If listening detects that the paging message is carrying a second terminal identifier, the terminal determines that the terminal is called by the second access network device.

In a specific example, the first message may also carry access technology type information. The access technology type information is used to notify the second access network device that the wireless access technology used by the first access network device that assigns the first terminal identifier to the terminal is the first access technology. used. Alternatively, the technology type information is that the wireless access technology used by the first access network device that assigns the first terminal identifier to the terminal is different from the wireless access technology used by the second access network device. It is used to notify the second access network device.

In a specific example, the first message may also carry information indicating that the terminal is in the first mode. The second access network device may informedly determine the status of the terminal.

In a specific example, the first message may also carry a transmission instruction. Transmission instructions are used to indicate whether the terminal has data and / or signaling to be transmitted. The second access network device may determine whether the terminal has data and / or signaling to be transmitted according to the transmission instructions.

In a specific example, the first message may also carry a paging area update instruction. The second access network device may determine that the terminal has moved out of the paging area area according to the paging area update instruction. For example, in one scenario, the second access network device manages multiple cells, some of the cells belong to the paging area, and the other cells do not belong to the paging area. .. If the terminal moves to a cell that does not belong to the paging area, the terminal may send a paging area update instruction to the second access network device by using the first message. The second access network device may determine that the terminal has moved out of the paging area area according to the paging area update instruction.

In a specific example, after transmitting the first message to the second access network device, the terminal may further receive the connection establishment instruction transmitted by the second access network device. The terminal may send a tracking area update command to the core network device according to the connection establishment instruction. Specifically, after receiving the first message, the second access network device determines that there is no interface between the second access network device and the first access network device. And a connection establishment instruction may be sent to the terminal to instruct the terminal to establish a new connection. The terminal issues a tracking area update command to the core network by deleting the saved connection context, establishing a new connection according to the connection establishment instructions, and then using the new connection established. • May be sent to the device, which causes the core network device to open the connection between the first access network device and the core network device based on the tracking area update command. ..

Part 604. The second access network device sends the first terminal identifier to the first access network device.

Specifically, the second access network device may determine that the terminal has moved from the first access network device to the second access network device based on the first message. Sends the first terminal identifier to the first access network device to get the terminal context.

In a specific example, the first terminal identifier includes a terminal ID (identification) and an access network device ID. If the first message carries access technology type information, the second access network device will have the terminal access second access based on the first terminal identifier and access technology type information in order to obtain the terminal context. It may be determined that the access network device serving the terminal before moving into the coverage of the network device is the first access network device. Specifically, the second access network device first determines the wireless access technology used by the access network device that is responding to the terminal before the terminal moves, based on the access technology type information. After that, in a network using wireless access technology and by using the access network device ID, the access network device that is responding to the terminal before the terminal moves is the first access. Determine that it is a network device and finally get the terminal context from the first access network device by using the terminal ID.

In a specific example, the second access network device may send the first terminal identifier to the first access network device by using a message. For the sake of brevity, the message is referred to as the second message. For example, the second message may be a terminal information instruction message, a terminal location update message, or a context request message. In a possible implementation, the second access network device uses the first terminal identifier as the first access network, depending on whether the first message carries information indicating that the terminal is in the first mode. You may decide which message will be used to send to the device. For example, if the first message carries information indicating that the terminal is in the first mode, the second access network may use the terminal information instruction message or the terminal location update message to carry the first terminal. Send the identifier to the first access network device. Alternatively, if the first message does not carry information indicating that the terminal is in the first mode, the second access network uses the context request message to set the first terminal identifier to the first. Send to an access network device.

In a specific example, if the first message carries information indicating that the terminal is in the first mode, the second access network device will carry information indicating that the terminal is in the first mode in the second message. It may be added to the first access network device, which informally determines the current mode of the terminal.

In a specific example, if the first message carries a send instruction, the second access network device may add more send instructions to the second message, thereby causing the first access network device. , Determines whether the terminal currently has data and / or signaling to be transmitted, in response to transmission instructions.

In a specific example, if the first message carries a paging area update instruction, the second access network device may add more paging area update instructions to the second message, thereby. The first access network device determines whether or not the terminal has moved out of the paging area area in response to the paging area update instruction.

Part 605. The first access network device sends a terminal context or terminal hold instruction to the second access network device based on the first terminal identifier.

In a specific example, the first access network device may send a context transfer message to the second access network device, and the context transfer message carries the terminal context. The context transfer message may be referred to as a context move message. For example, the context move message may be a handover message or a context response message.

In a specific example, the first access network device may send a terminal hold instruction to the second access network device when deciding to switch the terminal to hold mode. Hold mode means that the interface between the terminal and the core network device remains on the first access network device, but the interface is deactivated. After receiving the terminal hold instruction, the second access network device may send a hold command to the terminal in response to the terminal hold instruction.

In a specific example, the first access network device may determine the status of the terminal based on the type of second message. For example, if the second message is a terminal information instruction message or a terminal location update message, the first access network device may determine that the terminal is in the first mode. Further, if the first access network device determines that the terminal is in the first mode, the first access network device performs a context move procedure or a hold procedure, and the terminal context or terminal. Hold instructions may be sent to the second access network.

In a possible implementation, the first access network device decides whether to perform a context move procedure or a hold procedure, depending on whether the second message carries a send or paging area update instruction. You may decide. For example, if the second message carries a send instruction, the first access network device executes the context move procedure. For another embodiment, if the second message does not carry a send instruction, the first access network device performs a hold procedure. For another embodiment, if the second message carries a paging area update instruction, the first access network device performs a pending procedure.

In a specific example, the first access network device may determine the status of the terminal depending on whether the second message carries information indicating that the terminal is in the first mode. For example, the first access network device may determine that the terminal is in the first mode if the second message carries information indicating that the terminal is in the first mode. In addition, if the first access network device determines that the terminal is in the first mode, the first access network device executes a context move procedure or hold procedure, and the terminal context or terminal hold instructions. May be sent to the second access network. The specific implementation of executing a context move or hold procedure by the first access network device is similar to the process of implementing a context move or hold procedure in the example above. For details, refer to the detailed description of the above specific example. Details will not be explained here again.

The solutions provided in embodiments of the present invention are primarily described above in terms of interaction between various network elements. To implement the above functionality, the first access network device, the second access network device, the core network device, and the terminal shall have the corresponding hardware structure and / or software to perform the function. -It can be understood to include modules. The units and algorithm steps in the embodiments described in connection with the embodiments disclosed in the present invention may be implemented in the embodiments of the present invention by hardware or a combination of hardware and computer software. .. Whether a function is performed by the hardware or the computer software that drives the hardware depends on the design constraints of the particular application and technical solution. For each particular application, one of ordinary skill in the art may use different methods to implement the described functionality, but the implementation should be considered beyond the scope of the technical solutions in the embodiments of the present invention. is not it.

In the embodiment of the present invention, even if the division of the functional unit is performed with respect to the first access network device, the second access network device, the core network device, the terminal, etc., based on the above method example. Good. For example, the division of functional units may be based on various functions, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware or in the form of software functional units. It should be noted that the unit divisions in the embodiments of the present invention are specific examples and merely logical functional divisions, and may be other divisions in actual implementation.

FIG. 7 is a schematic block diagram of the first access network device, in which the units of the first access network device are integrated according to embodiments of the present invention. The first access network device 700 includes a processing unit 702 and a communication unit 703. The processing unit 702 is configured to control and manage the actions of the first access network device 700. For example, the processing unit 702 includes processes 302, 306, and 308 in FIG. 3, processes 402, 404, 405, and 409 in FIG. 4, processes 502, 504, 505, and 509 in FIG. 5, and processes 601 and 509 in FIG. The first access network device 700 is configured to perform 605 and / or other processes used in the techniques described herein. The communication unit 703 is configured to allow the first access network device to communicate with other network elements (eg, the second access network device or the core network device). The first access network device 700 may further include a storage unit 701 configured to store the program code and data of the first access network device 700.

The processing unit 702 may be a processor or a controller. The communication unit 703 may be a communication interface, a transceiver, a transceiver circuit, or the like. The communication interface is a set name. In a specific implementation, the communication interface includes multiple interfaces, such as an interface between access network devices, an interface between an access network device and a core network device, and / or other interfaces. It may be. The storage unit 701 may be a memory.

FIG. 8 is a schematic block diagram of the second access network device, in which the units of the second access network device are integrated according to embodiments of the present invention. The second access network device 800 includes a processing unit 802, a first communication unit 803, and a second communication unit 804. The processing unit 802 is configured to control and manage the actions of the second access network device 800. For example, processing unit 802 is described herein by processes 303 and 305 in FIG. 3, processes 406, 408, and 410 in FIG. 4, processes 506 and 508 in FIG. 5, process 604 in FIG. 6, and / or this specification. The second access network device 800 is configured to perform other processes used in the technology. The first communication unit 803 is configured so that the second access network device 800 can communicate with other access network devices or core network devices. The second communication unit is configured so that the second access network device 800 can communicate with the terminal. The second access network device 800 may further include a storage unit 801 configured to store the program code and data of the second access network device 800.

The processing unit 802 may be a processor or a controller. The first communication unit 803 may be a communication interface. The communication interface is a set name. In a specific implementation, the communication interface includes multiple interfaces, such as an interface between access network devices, an interface between an access network device and a core network device, and / or other interfaces. It may be. The second communication unit may be a transceiver, a transceiver circuit, or the like. The storage unit 801 may be a memory.

When the processing unit 702 is a processor, the communication unit 703 is a communication interface, and the storage unit 701 is a memory, the structure of the first access network device in this embodiment of the present invention is shown in FIG. It may be an access network device structure. This embodiment of the present invention when the processing unit 802 is a processor, the first communication unit 803 is a communication interface, the second communication unit 804 is a transmitter / receiver, and the storage unit 801 is a memory. The structure of the second access network device in the above may also be the access network device structure shown in FIG.

FIG. 9 is a possible schematic structure diagram of an access network device according to an embodiment of the present invention.

The access network device 900 includes a processor 902 and a communication interface 904. Processor 902 may also be a controller and is represented in FIG. 9 as "controller / processor 902". Communication interface 904 is configured to allow access network devices to communicate with other network elements (eg, other access network devices or core network devices). In addition, the access network device 900 may further include a transmitter / receiver 901. The transmitter / receiver 901 will support the transmission and reception of information between the access network device and the terminal in the above embodiments, and will support wireless communication between the terminal and other terminals. It is composed. Processor 902 performs various functions for communicating with the terminal. In the uplink, the uplink signal from the terminal is received by the antenna, demodulated by the receiver 901 (eg, the high frequency signal is demodulated to the baseband signal), and the service data and signaling information transmitted by the terminal. Further processed by processor 902 to restore. In the downlink, service data and signaling messages are processed by processor 902 and modulated by transmitter 901 to generate downlink signals (eg, baseband signals are modulated to high frequency signals) and down. The link signal is transmitted to the terminal by using the antenna. It should be noted that the demodulation or modulation function described above may be performed by processor 902 instead.

For example, if the access network device 900 is the first access network device, the processor 902 is described in the processing process of the first access network device in the methods of FIGS. 3 to 6 and / or the present application. Further configured to perform other processes in the technical solutions. Alternatively, if the access network device 900 is the second access network device, the processor 902 is the processing process of the second access network device in the method of FIGS. 3-6, and / or in the present application. It is further configured to perform other processes in the technical solutions described.

Further, the access network device 900 may further include memory 903. The memory 903 is configured to store the program code and data of the access network device 900.

It can be understood that Figure 9 simply illustrates the simplified design of the Access Network Device 900. In a real application, the access network device 900 may include any number of transmitters, receivers, processors, controllers, memories, communication units and the like. All access network devices to which the embodiments of the present invention can be implemented shall fall within the scope of protection of the embodiments of the present invention.

FIG. 10 is a schematic block diagram of the core network device, in which the units of the core network device are integrated according to embodiments of the present invention. The core network device 1000 includes a processing unit 1002 and a communication unit 1003. Processing unit 1002 is configured to control and manage the actions of core network devices. For example, processing unit 1002 cores processes 301 and 307 in FIG. 3, processes 401 and 410 in FIG. 4, process 501 in FIG. 5, and / or other processes used in the techniques described herein. • Configured to run network devices. Communication unit 1003 is configured to allow core network devices to communicate with other network entities. The core network device may further include a storage unit 1001 configured to store the program code and data of the core network device.

The processing unit 1002 includes, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and a field programmable. It may be a processor or controller such as a Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or a combination thereof. The processing unit 1002 may implement or execute various specific examples of logic blocks, modules, and circuits described in connection with the contents disclosed in the present invention. Alternatively, the processor may be a combination of processors that implement computing functions, such as a combination of one or more microprocessors, or a combination of DSPs and microprocessors. The communication unit 1003 may be a communication interface, a transceiver, a transceiver circuit, or the like. The communication interface is a set name. In a specific implementation, the communication interface may include multiple interfaces, such as an interface between a core network device and an access network device, and / or other interfaces. Storage unit 1001 may be memory.

When the processing unit 1002 is a processor, the communication unit 1003 is a communication interface, and the storage unit 1001 is a memory, the core network device in this embodiment of the present invention is the core network shown in FIG. -It may be a device.

Referring to FIG. 11, core network device 1100 includes processor 1102, communication interface 1103, and memory 1101. Optionally, the core network device 1100 may further include a bus 1104. The communication interface 1103, the processor 1102, and the memory 1101 may be connected to each other by using the bus 1104. The bus 1104 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. Bus 1104 may be classified into an address bus, a data bus, a control bus, and the like. For the sake of brevity, only one thick line is used to represent a bus in Figure 11, but this does not mean that there is only one bus or only one type of bus.

FIG. 12 is a schematic block diagram of the terminal, in which the terminal units are integrated according to embodiments of the present invention. The terminal 1200 includes a processing unit 1202 and a communication unit 1203. The processing unit 1202 is configured to control and manage the actions of the terminal 1200. For example, processing unit 1202 is used in processes 304 in FIG. 3, processes 403 and 407 in FIG. 4, processes 503 and 507 in FIG. 5, processes 602 and 603 in FIG. 6, and / or the techniques described herein. The terminal 1200 is configured to execute other processes. Communication unit 1203 is configured to allow terminals to communicate with other network elements. The terminal 1200 may further include a storage unit 1201 configured to store the program code and data of the terminal 1200.

If the processing unit 1202 is a processor, the communication unit 1203 is a communication interface, and the storage unit 1201 is a memory, the terminal in this embodiment of the present invention may be the terminal shown in FIG.

FIG. 13 is a simplified schematic diagram of a possible design structure of a terminal according to an embodiment of the present invention. The terminal 1300 includes a transmitter 1301, a receiver 1302, and a processor 1303. Processor 1303 may also be a controller and is referred to as "controller / processor 1303" in FIG. Optionally, the terminal 1300 may further include a modem processor 1305. The modem processor 1305 may include an encoder 1307, a modulator 1307, a decoder 1308, and a demodulator 1309.

In a specific example, transmitter 1301 tunes the output sample (eg, digital-to-analog conversion, filtering, amplifying, and up-converting) and produces an uplink signal. The uplink signal is transmitted to the base station in the above embodiment by using an antenna. In the downlink, the antenna receives the downlink signal transmitted by the base station in the above embodiment. Receiver 1302 regulates the signal received from the antenna (eg, filters, amplifies, down-converts, and digitizes) and provides input samples. In the modem processor 1305, the encoder 1307 receives service data and signaling messages to be transmitted on the uplink and processes service data and signaling messages (eg, format, encode, and). And interleave). Modulator 1307 further processes the encoded service data and signaling messages (eg, performs symbol mapping and modulates), and provides output samples. Demodulator 1309 processes the input sample (eg, demodulates) and provides symbol estimation. Decoder 1308 processes symbol estimation (eg, deinterleaves and decodes) and provides decoded data and signaling messages to be sent to terminal 1300. The encoder 1307, modulator 1307, demodulator 1309, and decoder 1308 may be implemented by the combined modem processor 1305. These units perform processing based on the radio access technology used by the radio access network (eg, the access technology used by LTE systems and other evolved systems). It should be noted that if the terminal 1300 does not include a modem processor 1305, the above functions of the modem processor 1305 may be performed by processor 1303.

Processor 1303 is configured to control and manage the actions of terminal 1300 and to perform the processing processes implemented by terminal 1300 in the above embodiments of the present invention. For example, processor 1303 is further configured to perform the terminal processing process in the methods of FIGS. 3 to 6 and / or other processes in the technical solutions described herein.

Further, the terminal 1300 may further include memory 1304. The memory 1304 is configured to store the program code and data of the terminal 1300.

The methods and algorithm steps described in connection with the contents disclosed in the embodiments of the present invention may be implemented by hardware or by a processor by executing software instructions. Software instructions may include the corresponding software module. Software modules include Random Access Memory (RAM), Flash Memory, Read Only Memory (ROM), and Erasable Programmable ROM. , EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), registers, hard disks, removable hard disks, compact disk read-only memory (CD-ROM) ), Or may be stored in any other form of storage medium well known in the art. For example, the storage medium is coupled to the processor, which allows the processor to read information from the storage medium and write the information to the storage medium. Indeed, the storage medium may be a component of the processor. The processor and storage medium may be located in the ASIC. In addition, the ASIC may be located at a base station or terminal. Indeed, the processor and storage medium may be present as separate elements in the base station or terminal.

Those skilled in the art should be aware that in one or more of the above embodiments, the functionality described in embodiments of the present invention may be implemented by hardware, software, firmware, or any combination thereof. .. If the features are implemented in software, these features may be stored on a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media and communication media. Communication media include any medium that allows a computer program to be transmitted from one location to another. The storage medium may be any available medium accessible for general purpose or dedicated computers.

In the above specific implementation, the objectives, technical solutions, and advantageous effects of embodiments of the present invention will be described in more detail. It should be understood that the above description is merely a specific implementation of the embodiments of the invention and is not intended to limit the scope of protection of the embodiments of the invention. Any modifications, equal substitutions, or improvements made based on the technical solutions in the embodiments of the invention shall fall within the scope of protection of the embodiments of the invention.

The present invention relates to the field of communication technology and, in particular, to communication methods, devices and systems.

In a wireless communication system, a terminal may be connected to a core network (Core Network, CN) by using a radio access network (RAN). For example, the terminal may connect to the core network device in CN by using the access network device in RAN. By using an access network device, the core network device may send signaling to the terminal and receive the corresponding response. However, when the terminal moves out of the coverage of the access network device, the terminal does not receive the signaling of the core network device and therefore cannot perform appropriate subsequent processing.

Embodiments of the present invention describe a communication method that solves the problem that the terminal cannot perform appropriate subsequent processing when the signaling of the core network device is not received.

According to one embodiment, an embodiment of the present invention provides a communication method, the method is applied to a communication system, the communication system includes a paging area, which includes at least a first access network device and a second access network device. There is an access network device, there is a communication link between the first access network device and the core network device, and the method is: directed by the first access network device to the terminal. The step of receiving the signaling from the core network device; the step of sending the first paging message to the second access network device by the first access network device, where the first paging message is the terminal. Steps used to call; Send a second paging message to the terminal by the second access network device; Receive a paging response from the terminal by the second access network device; And the step of transmitting the first instruction information to the first access network device by the second access network device, and the first instruction information is that the terminal is connected to the second access network device. Includes steps used to indicate. In this embodiment of the invention, after receiving the signaling directed to the terminal transmitted by the core network device, the first access network device sends the first paging message to the second access network device. If you send to and receive the first instruction message sent by the second access network device, you can know that the terminal is connected to the second access network device, and therefore. Perform the appropriate subsequent processing.

At least a first access network device and a second access network device exist in the paging area: A first access network device and a second access network device exist in the paging area. That is, or there may be another access network device in the paging area in addition to the first access network device and the second access network device. The presence of a first access network device and a second access network device in the paging area means that all or some of the cells of the first access network device and all of the second access network devices. Or it means that some cells belong to the paging area.

The signaling may include at least one of the following: non-access stratum NAS signaling, radio bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting signaling, tracking signaling, or location service LCS. Signaling. For example, the first access network device receives a context modification command from the core network device and sends an RRC reconfiguration command to the terminal based on the context modification command to modify the terminal's context. You may. In another embodiment, the first access network device may receive the NAS signaling from the core network device and subsequently transfer the NAS signaling to the terminal.

In a possible design, the first access network device may send a first paging message to a second access network device if no paging response is received from the terminal. In a possible design, the first access network device may receive the terminal information instruction message from the second access network device, which carries the first instruction information; or the first access. The network device may receive the terminal context request message from the second access network device, and the terminal context request message carries the first instruction information.

In a possible design, the first access network device may further transmit the second instruction information to the core network device, which causes the terminal to go out of coverage of the first access network device. Used to indicate that it has moved. For example, the first access network device may send a response message to the signaling to the core network device, which carries the second instruction information. In another embodiment, the first access network device may send a signaling failure message to the core network device, the signaling failure message carries the second instruction information, and the signaling is successfully transmitted. Used to indicate that it is not.

The second instruction information may include one or all of the information about the second access network device and the status information of the terminal, and the status information is used to indicate the status of the terminal. For example, the status of the terminal may be: When the terminal moves within the paging area, the interface between the terminal and the core network device remains on the first access network device. In another embodiment, the status of the terminal may be: the terminal is able to maintain a connection context and perform cell reselection based on mobility. For another embodiment, the status of the terminal may be a lightly connected mode, which is an inactive mode, a deactivated mode, a low active mode, a low overhead mode. And so on.

In a possible implementation, after sending the first instruction information to the first access network device, the second access network device may further receive signaling directed to the terminal from the core network device. Good. Optionally, the second access network device may further send a path switching request to the core network device before receiving the signaling.

In a possible design, the first access network device may instead send signaling to the second access network device. For example, the first access network device may send a context transfer message to the second access network device, which carries the signaling.

In a possible implementation, the first access network device may further receive the first signaling processing instruction from the second access network device, and the first signaling processing instruction is successfully signaled. Or used to indicate failure. For example, the first access network device may receive a context transfer acquisition message from the second access network device, which carries the first signaling processing instruction. Further, the first access network device may send the second signaling processing instruction to the core network device, and the second signaling processing instruction indicates that the signaling processing is successful or unsuccessful. Used to indicate.

In a possible design, the second access network device may instead send signaling to the terminal.

According to another embodiment, an embodiment of the present invention provides a communication method, the method is applied to a communication system, the communication system has a paging area, and the paging area is associated with at least a first access network device. There is a second access network device, there is a communication link between the first access network device and the core network device, and the method is: directed by the core network device to the terminal. The step of transmitting the signaling to the first access network device; the step of receiving the second instruction information from the first access network device by the core network device, and the second instruction information is the second instruction information by the terminal. 1 Used to indicate that the access network device has moved out of coverage; and includes the step of transmitting signaling to the second access network device by the core network device. In this embodiment of the invention, after transmitting the signaling to the first access network device, the core network device can receive the second instruction information from the first access network device. And therefore it is possible to know that the terminal has moved out of the coverage of the first access network device and to send signaling to the second access network device for appropriate subsequent processing.

At least a first access network device and a second access network device exist in the paging area: A first access network device and a second access network device exist in the paging area. That is, or there may be another access network device in the paging area in addition to the first access network device and the second access network device. The presence of a first access network device and a second access network device in the paging area means that all or some of the cells of the first access network device and all of the second access network devices. Or it means that some cells belong to the paging area.

The signaling may include at least one of the following: non-access stratum NAS signaling, radio bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting signaling, tracking signaling, or location service LCS. Signaling.

In a possible design, the core network device may receive a response message to the signaling from the first access network device, the response message containing the second instruction information; or the core network device , The signaling failure message may be received from the first access network device, and the signaling failure message is used to carry the second instruction information and to indicate that the signaling has not been successfully transmitted.

The second instruction information may include one or all of the information about the second access network device and the status information of the terminal, and the status information is used to indicate the status of the terminal. For example, the status of the terminal may be: When the terminal moves within the paging area, the interface between the terminal and the core network device remains on the first access network device. In another embodiment, the status of the terminal may be: the terminal is able to maintain a connection context and perform cell reselection based on mobility. For another embodiment, the status of the terminal may be in a mildly connected mode.

In a possible design, after receiving the second instruction information from the first access network device, the core network device may further transmit signaling to the second access network device. For example, the core network device may send signaling to the second access network device based on information about the second access network device. In another embodiment, the core network device may send signaling to the second access network device after receiving the path switching request sent by the second access network device.

According to yet another embodiment, an embodiment of the present invention provides a first access network device, which implements the actions of the first access network device in the above method example. Has the function of The functionality may be implemented in hardware or by running the corresponding software by using the hardware. Hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the first access network device includes a processor, which is configured to allow the first access network device to perform the corresponding function in the above manner. In addition, the first access network device may further include a communication interface, which supports communication between the first access network device and the second access network device or core network device. It is configured to do. In addition, the first access network device may further include memory, the memory is configured to be coupled to a processor, and the memory stores program instructions and data required by the first access network device.

According to yet another embodiment, the embodiment of the present invention provides a second access network device, which implements the actions of the second access network device in the above method example. Has a function. The functionality may be implemented in hardware or by running the corresponding software by using the hardware. Hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the second access network device includes a processor, which is configured to allow the second access network device to perform the corresponding function in the above manner. Further, the second access network device may further include a communication interface, a transmitter, and a receiver, and the communication interface may further include a second access network device and a first access network device or a core network. • It is configured to support communication with the device, and the transmitter and receiver are configured to support communication between the second access network device and the terminal. In addition, the second access network device may further include memory, the memory is configured to be coupled to a processor, and the memory stores program instructions and data required by the second access network device.

According to yet another embodiment of the present invention, the embodiment provides a core network device, which has the function of implementing the actions of the core network device in the above method example. .. The functionality may be implemented in hardware or by running the corresponding software by using the hardware. Hardware or software includes one or more modules corresponding to the above functions.

In a possible design, the core network device includes a processor, which is configured to allow the core network device to perform the corresponding function in the above manner. In addition, the core network device may further include a communication interface so that the communication interface supports communication between the core network device and the first access network device or the second access network device. It is composed of. In addition, the core network device may further include memory, the memory is configured to be coupled to a processor, and the memory stores program instructions and data required by the core network device.

According to another embodiment, the embodiment of the present invention provides a communication system, the system includes a first access network device and a second access network device in the above embodiment, or the system is the above embodiment. Includes a first access network device, a second access network device, and a core network device in.

According to yet another embodiment, embodiments of the present invention provide a computer storage medium configured to store computer software instructions used by the first access network device described above. Software instructions include programs designed to perform the above forms.

According to yet another embodiment, embodiments of the present invention provide a computer storage medium configured to store computer software instructions used by the second access network device described above. Software instructions include programs designed to perform the above forms.

According to yet yet another embodiment, an embodiment of the present invention provides a computer storage medium configured to store computer software instructions used by the core network devices described above. Software instructions include programs designed to perform the above forms.

Compared to the prior art, in the solution in the embodiments of the present invention, the first access network device sends a first paging message after receiving the signaling directed to the terminal transmitted by the core network device. Know that the terminal is connected to the second access network device when it sends to the second access network device and receives the first instruction message sent by the second access network device. It is possible, and therefore perform appropriate subsequent processing.

In order to more clearly explain the technical solution in the embodiment or the prior art of the present invention, the accompanying drawings required to explain the embodiment or the prior art will be briefly introduced below. Obviously, the accompanying drawings in the following description show some embodiments of the present invention, and one of ordinary skill in the art may further derive other drawings from these attached drawings without any creative effort.

FIG. 1 is a schematic representation of possible application scenarios according to embodiments of the present invention;

FIG. 2 is a schematic diagram of a possible network architecture according to an embodiment of the present invention;

FIG. 3 is a schematic communication diagram of a communication method according to an embodiment of the present invention;

FIG. 4 is a schematic communication diagram of another communication method according to the embodiment of the present invention;

FIG. 5 is a schematic communication diagram of still another communication method according to the embodiment of the present invention;

FIG. 6 is a schematic communication diagram of still another communication method according to the embodiment of the present invention;

FIG. 7 is a schematic block diagram of a first access network device according to an embodiment of the present invention;

FIG. 8 is a schematic block diagram of a second access network device according to an embodiment of the present invention;

FIG. 9 is a schematic structural diagram of an access network device according to an embodiment of the present invention;

FIG. 10 is a schematic block diagram of a core network device according to an embodiment of the present invention;

FIG. 11 is a schematic structural diagram of a core network device according to an embodiment of the present invention;

FIG. 12 is a schematic block diagram of a terminal according to an embodiment of the present invention;

FIG. 13 is a schematic structural diagram of a terminal according to an embodiment of the present invention.

In order to further clarify the purpose, technical solution, and advantage of the embodiment of the present invention, the technical solution in the embodiment of the present invention related to the accompanying drawings in the embodiment of the present invention will be described below.

The network architecture and service scenarios described in the embodiments of the present invention are intended to more clearly describe the technical solutions in the embodiments of the present invention, and are provided in the embodiments of the present invention. It does not constitute any limitation on any technical solution. Those skilled in the art will appreciate that with the development of network architectures and the emergence of new service scenarios, the technical solutions provided in embodiments of the present invention will also be applicable to similar technical problems. Is possible.

Hereinafter, some possible application scenarios and network architectures to which the embodiments of the present invention are applicable will be described first with reference to FIGS. 1 and 2.

FIG. 1 shows one possible applicable application scenario according to an embodiment of the present invention. As shown in FIG. 1, by using a radio access network and a core network, the terminal, IP multimedia subsystem (IP Multimedia subs ystem, IMS) network or a packet switched streaming service (Packet Switched Streaming Connect to an operator's Internet Protocol (IP) service network, such as a Service (PSS) network. The technical solutions described in the present invention are Long Term Evolution (LTE) systems, or other wireless communication systems that use various wireless access technologies, such as Code Division Multiple. Access, CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Orthogonal Frequency Division Multiple Access (OFDMA), and Single Carrier It may be applicable to systems that use access technologies such as Single Carrier Frequency Division Multiple Access (SC-FDMA). Further, the technical solution may be applicable to successor development systems of LTE systems such as 5th Generation (5G) systems. For clarity, only LTE systems are used as an example for illustration here. In LTE systems, the Evolved Universal Terrestrial Radio Access Network (E-UTRAN) is used as the radio access network, and the Evolved Packet Core (EPC) is the core network. Used as. The terminal connects to the IMS network by using E-UTRAN and EPC. It should be noted that the names of base stations and terminals may change if the solutions in the embodiments of the present invention are applied to 5G systems or other systems that may emerge in the future. However, that does not affect the implementation of the solutions in the embodiments of the present invention.

Based on the application scenario described above, FIG. 2 shows a possible network architecture according to an embodiment of the present invention. As shown in Figure 2, the network architecture includes core network devices, terminals, and multiple access network devices. The access network device 101 and the access network device 102 are in the same paging area, for example, the first paging area. The access network device 103 is in another paging area, such as a second paging area. Access network device 101 may be referred to as an anchor access network device in the first paging area. Anchor access network devices are access network devices that store contextual information about the terminal device and maintain a connection between the terminal and the core network device, and the core network device and the first. 1 Connect to any other access network device in the paging area. In FIG. 2, terminal 201 is in a lightly connected mode. The terminal is in a mildly connected mode: if the interface between the terminal and the core network device remains on the anchor access network device, and the terminal moves within a particular area. Means that it is not necessary to notify the anchor access network device, but it is necessary to notify the anchor access network device when moving out of the service area of a specific area. For example, terminal 201 may maintain an interface between terminal 201 and the core network device by using access network device 101 in the first paging area, and terminal 201 may use first paging. -It is not necessary to notify the access network device 101 when moving within the area, and the terminal 201 notifies the access network device 101 only when moving outside the service area of the first paging area. To do.

In the embodiments of the present invention, the lightly connected mode may be a sub-mode of Radio Resource Control (RRC) connected mode, an enhanced mode of idle mode, or an independent mode. Good. Lightly connected modes may have different names. For example, mildly connected modes may be referred to as inactive mode, deactivated mode, low active mode, low overhead mode, and the like. The name or form of the lightly connected mode is not limited in the embodiments of the present invention. For the sake of brevity, the first mode may be used below to describe the mildly connected mode.

The paging area in the embodiments of the present invention may be referred to as a cell set, and the cell set is managed by an access network device. When moving within a cell set, the terminal does not need to notify the access network device that sets the paging area for that terminal; when moving out of the cell set, the terminal does not need to notify the access network. -You need to notify the device. If the access network device in the cell set needs to communicate with the terminal device, the access network device needs to call the terminal in every cell contained in the cell set. The paging area is referred to as a terminal registration area, a terminal light connection area, a terminal management area, a terminal access network registration area, a terminal tracking area, a terminal access network tracking area, etc. It should be noted that it is also good. This is not limited to the embodiments of the present invention.

In embodiments of the present invention, the terms "network" and "system" are usually used alternatives, but those skilled in the art can understand their meaning. The terminal according to the embodiment of the present invention is a device having a wireless communication function such as a mobile device, an in-vehicle device, a wearable device, a computing device, or another processing device connected to a wireless modem, and a user device (User). It may include various formats such as Equipment, UE), Mobile Station (MS), terminal device (terminal device), and the like. For the sake of brevity, the above devices are collectively referred to as terminals. An access network device according to an embodiment of the present invention is a device that is deployed in a radio access network and is configured to provide wireless communication functionality to a terminal. For example, the access network device may be a base station (BS), which may include various forms such as macro base stations, micro base stations, relay stations, access points, and the like. In systems that use different wireless access technologies, devices that function as base stations may have different names. For example, the device is referred to as evolved NodeB (evolved NodeB, eNB or eNodeB) in Long Term Evolution (LTE) systems, or Node B (NodeB) in third generation (3G) communication systems. ). For the sake of brevity, all devices that provide wireless communication capabilities to terminals are collectively referred to as access network devices in embodiments of the present invention. The core network device in the embodiment of the present invention may include different devices in different systems. For example, in an LTE system, the core network device may include a Mobility Management Entity (MME) or a Serving Gateway (SGW); in a 3G communication system, the core network device may include. , Serving GPRS Support Node (SGSN) or Gateway GPRS support Node (GGSN). GPRS is an abbreviation for General Packet Radio System. Core network devices in embodiments of the present invention may include core network devices in 5G systems or other systems that may emerge in the future.

Hereinafter, embodiments of the present invention based on the above general features of the embodiments of the present invention will be described in more detail.

The existing solution is when the terminal is connected to the core network device by using the access network device and the terminal moves out of the coverage of the access network device (eg, handover. When the terminal is not connected to the destination access network device in the process, or when the terminal moves into the coverage of another access network device in the same paging area in a mildly connected mode. ), The terminal does not receive the core network device signaling and therefore cannot perform appropriate subsequent processing.

In view of this point, embodiments of the present invention provide communication methods and devices and systems based on the methods. The method applies to communication systems, which include a paging area, where at least a first access network device and a second access network device exist, with the first access network device. There is a communication link to and from the core network device, and the method is: The step of receiving the signaling directed to the terminal from the core network device by the first access network device; the first access network The device sends the first paging message to the second access network device, which is used to call the terminal, step; by the second access network device. , The step of sending the second paging message to the terminal; the step of receiving the paging response from the terminal by the second access network device; and the first access of the first instruction information by the second access network device. • A step of transmitting to a network device, the first instructional information containing a step used to indicate that the terminal is connected to a second access network device. In an embodiment of the invention, after receiving the signaling directed to the terminal transmitted by the core network device, the first access network device sends the first paging message to the second access network device. If you send and receive the first instruction message sent by the second access network device, it is possible and therefore appropriate to know that the terminal is connected to the second access network device. The subsequent processing is executed.

It should be noted that the second access network device may be any access network device within the paging area other than the first access network device.

As you can see, there are at least a first access network device and a second access network device in the paging area: a first access network device and a second access network device in the paging area. The device may be present, or another access network device may be present in the paging area in addition to the first access network device and the second access network device. The presence of a first access network device and a second access network device in the paging area means that all or some of the cells of the first access network device and all of the second access network devices. Or it means that some cells belong to the paging area.

Hereinafter, the solutions provided in the embodiments of the present invention will be described in connection with FIG. The method in Figure 3 applies to communication systems. The communication system includes a paging area, in which at least a first access network device and a second access network device exist, and between the first access network device and the core network device. There is a communication link in. The method comprises steps 301-305.

Step 301. The core network device sends the signaling to the first access network device.

Signaling is signaling directed to a terminal.

In a specific example, the signaling may include at least one of the following: Non-Access Stratum (NAS) signaling, wireless bearer management signaling, terminal context modification signaling, terminal context deletion signaling, location reporting. Signaling, tracking signaling, or location service (LCS) signaling. The radio bearer management signaling may include at least one of radio bearer establishment signaling, radio bearer modification signaling, or radio bearer deletion signaling.

It is possible to understand that after receiving the signaling directed to the terminal from the core network device, the first access network device needs to send the signaling to the terminal. For example, after receiving a context modification command from a core network device, the first access network device sends an RRC reconfiguration command to the terminal based on the context modification command to modify the terminal's context. You may. In another embodiment, the first access network device may transfer the NAS signaling to the terminal after receiving the NAS signaling from the core network device. However, the first access network device only knows that the terminal is in the paging area before the first access network device sends the signaling to the terminal. Therefore, the first access network device needs to start paging to the terminal in the paging area so that the terminal connects to the network. For example, the first access network device may initiate paging directly to the terminal, or it may cause the second access network device to initiate paging to the terminal.

Step 302. The first access network device sends the first paging message to the second access network device, and the first paging message is used to call the terminal.

In a specific example, the first access network device may send a first paging message to a second access network device if no paging response is received from the terminal. For example, after receiving signaling from the core network device, the first access network device may first send a third paging message to the terminal, and no paging response is received from the terminal within a certain period of time. In some cases, the first paging message may be sent to the second access network device. Optionally, the terminal may further receive the configuration information sent by the first access network device before receiving the third paging message sent by the first access network device. The configuration information is used to instruct the terminal to enter the first mode. The implementation of selective steps is similar to that in step 701 of FIG. 7, and a detailed description of step 701 may be referred to. Details are not described here.

Step 303. The second access network device sends a second paging message to the terminal.

In a specific example, the terminal may further receive the configuration information transmitted by the first access network device before receiving the second paging message transmitted by the second access network device. The configuration information is used to instruct the terminal to enter the first mode. The implementation of this embodiment is similar to that in step 701 of FIG. 7, and a detailed description of step 701 may be referred to. Details are not described here.

Step 304. The second access network device receives the paging response from the terminal.

In a specific example, the second access network device may receive a location update message, an RRC connection restore request message, an RRC connection reestablishment message, or an RRC connection resume message from a terminal, and may receive a location update message. A message, an RRC connection restore request message, an RRC connection reestablishment message, or an RRC connection resume message carries a paging response. After receiving the paging response sent by the terminal, the second access network device may determine based on the paging response that the terminal is currently in the coverage of the second access network device. ..

Step 305. The second access network device sends the first instruction information to the first access network device, and the first instruction information is used to indicate that the terminal is connected to the second access network device. Will be done. For example, the second access network device may send the first instruction information to the first access network device based on the paging response sent by the terminal.

In a specific example, the first instruction information may include a terminal identifier.

In a specific example, the second access network device may send a terminal information instruction message to the first access network device, which carries the first instruction information; or the second access network device. The network device may send a terminal context request message to the first access network device, which carries the first instruction information. In this case, the first access network device may determine that the terminal is currently within the coverage of the first access network device based on the terminal information instruction message or the terminal context request message. ..

In a specific example, a terminal information instruction message or a terminal context request message may further carry a terminal data instruction, and the data instruction is used to indicate whether the terminal has data to be transmitted. ..

Optionally, the method of FIG. 3 may further comprise the step 306 and step 307, or the method in Figure 3 may further include a step 308.

Step 306. The first access network device sends the second instruction information to the core network device, and the second instruction information is used to indicate that the terminal has moved out of the coverage of the first access network device. To.

In a specific example, the first access network device may send a response message to the signaling to the core network device, which carries the second instruction information; or the first access network device. May send a signaling failure message to the core network device, which is used to carry the second instruction information and to indicate that the signaling has not been successfully transmitted.

In a specific example, the second instruction information may include information about the second access network device or terminal status information, and the terminal status information is used to indicate the terminal status. For example, the status of the terminal: If the terminal moves within the paging area, the interface between the terminal and the core network device may remain on the first access network device. .. In another embodiment, the terminal status may be: the terminal maintains a connection context and performs cell reselection based on mobility. For another embodiment, the status of the terminal may be in a mildly connected mode.

Step 307. The core network device sends the signaling to the second access network device.

In a specific embodiment, before sending a the signaling to the second access network device, a core network device may further receive a path switching request from the second access network device.

In a specific example, if the second instruction information includes information about the second access network device, the core network device signals the second access network device based on the information about the second access network device. It may be sent to the device. In this case, the core network device may determine that the terminal has moved into the coverage of the second access network device based on the information about the second access network device, and therefore signaling. May be sent directly to the second access network device.

In a specific example, if the second instruction information includes terminal status information, the core network device makes a path switching request to the second access network before sending the signaling to the second access network device. -You may receive more from the device. In this case, the core network device determines the status of the terminal based on the status information of the terminal and signals after receiving the path switching request sent by the second access network device. 2 May be sent to an access network device.

In a specific example, the second access network device may further transmit signaling to the terminal.

When the first access network device sends the second instruction information to the core network device, the core network device learns that the terminal has moved out of the coverage of the first access network device. And the signaling directed to the terminal can be sent to the second access network device so that the signaling of the core network device is successfully transmitted and appropriate subsequent processing is performed. Can be known from the above.

Step 308. The first access network device sends signaling to the second access network device.

In a specific example, the first access network device may send a context transfer message to the second access network device, the context transfer message carrying signaling.

In a specific example, the first access network device may further receive the first signaling processing instruction from the second access network device, and the first signaling processing instruction may be successful in signaling. Used to indicate failure. Further, the first access network device may send the second signaling processing instruction to the core network device, and the second signaling processing instruction indicates that the signaling processing is successful or unsuccessful. Used to indicate.

In a possible implementation, the first access network device may receive the context transfer acknowledgement message from the second access network device, which carries the first signaling processing instruction.

In a specific example, the second access network device may further transmit signaling to the terminal.

If the terminal moves from the first access network device to the second access network device, the first access network device may send signaling to the second access network device, thereby the first. 2 It is possible to know from the above that the access network device sends signaling to the terminal. In this way, the signaling of the core network device can be successfully transmitted and appropriate subsequent processing can be performed.

Based on the method in FIG. 3, the solutions provided in the embodiments of the present invention related to FIG. 4 will be further described below. For the same or similar contents of the method in FIG. 4 as in the method in FIG. 3, refer to the detailed explanation in FIG. Details will not be explained here again.

Step 401. The core network device sends the signaling to the first access network device.

Signaling is signaling directed to a terminal.

See the detailed description of step 301 in FIG. 3 for the relevant content of signaling. Details will not be explained here again.

Step 402. The first access network device sends a third paging message to the terminal.

In a specific example, the terminal may further receive the configuration information transmitted by the first access network device before receiving the third paging message transmitted by the first access network device. , The configuration information is used to instruct the terminal to enter the first mode. The implementation of this embodiment is similar to that in step 701 of FIG. 7, and a detailed description of step 701 may be referred to. Details are not described here.

Step 403. The terminal sends a second paging response to the first access network device.

Step 404. The first access network device sends a signaling success message to the core network device.

After receiving the second paging response from the terminal, the first access network device may further initiate a reconfiguration procedure for the terminal based on the signaling.

Step 403 and step 404 it should be noted that it is optional step. If step 403 and step 404 are performed, the method ends in FIG. 4, to not step 405 411 is no longer running. Before step 403 is executed, if step 405 and step 406 is executed, after the step 403 and step 404 is executed, to not step 407 411 longer not be performed, can be understood is there. The reason for this is that the terminal sends the second paging response to the first access network device in step 403, and usually does not send the first paging response to the second access network device. ..

If step 403 and step 404 are not executed, step 405 is executed next.

Step 405. The first access network device sends the first paging message to the second access network device, and the first paging message is used to call the terminal.

Step 406. The second access network device sends a second paging message to the terminal.

In a specific example, the terminal may further receive the configuration information transmitted by the first access network device before receiving the second paging message transmitted by the second access network device. , The configuration information is used to instruct the terminal to enter the first mode. The implementation of this embodiment is similar to that in step 701 of FIG. 7, and a detailed description of step 701 may be referred to. Details are not described here.

Step 407. The terminal sends the first paging response to the second access network device.

Steps 408 and 409 are similar to steps 305 and 306 in FIG. 3, respectively , and a detailed description of steps 305 and 306 may be referenced. Details will not be explained here again.

Step 410. The second access network device sends a path switching request to the core network device.

It should be noted that step 410 is an optional step. If the second instruction information includes information about the second access network, step 410 may or may not be performed. If the second instruction information includes terminal status information, step 410 is executed.

Step 411 is similar to step 307 in FIG. 3 , and a detailed description of step 307 may be referenced. Details will not be explained here again.

In this embodiment of the invention, after receiving signaling directed to the terminal from the core network device, the first access network device sends the paging message to the terminal and the second access network device separately. Send. When the paging response is received from the terminal, the first access network device sends a signaling success message to the core network device. When the first instruction information is received from the second access network device, the first access network device sends the second instruction information to the core network device. After receiving the second instruction information, the core network device can know that the terminal has moved out of the coverage of the first access network device, and therefore signals the second access network device. Send to device. In either case, the core network device signaling can be successfully transmitted, thereby performing appropriate subsequent processing.

Based on the method in FIG. 3, the solutions provided in the embodiments of the present invention related to FIG. 5 will be further described below. For the same or similar content in the method of FIG. 5 as in the method of FIG. 3 or 4, refer to the detailed description of FIG. 3 or 4. Details will not be explained here again.

Steps 501-507 are similar to steps 401-407 in FIG. 4, respectively , and a detailed description of steps 401-407 may be referenced. Details will not be explained here again.

Steps 508 and 509 are similar to steps 305 and 308 in FIG. 3, respectively , and a detailed description of steps 305 and 308 may be referenced. Details will not be explained here again.

In this embodiment of the invention, after receiving signaling directed to the terminal from the core network device, the first access network device sends the paging message to the terminal and the second access network device separately. Send. When the paging response is received from the terminal, the first access network device sends a signaling success message to the core network device. When the first instruction information is received from the second access network device, the first access network device sends signaling to the second access network device. In either case, the core network device signaling can be successfully transmitted, thereby performing appropriate subsequent processing.

Embodiments of the present invention further provide communication methods, as well as devices and systems based on the methods. Methods: The terminal receives configuration information from the first access network device; the terminal enters the first mode based on the configuration information; the terminal sends a message to the second access network device. The step of transmitting to, the message carries the first terminal identifier; the step of transmitting the first terminal identifier to the first access network device by the second access network device; and the first access network device. The network device comprises sending a terminal context or terminal hold instruction to the second access network device based on the first terminal identifier. In this embodiment of the invention, after moving from the first access network device to the second access network device, the terminal can transmit the terminal identifier to the second access network device. , Thereby, the second access network device receives the terminal context or terminal hold instruction from the first access network device.

Hereinafter, the solutions provided in the embodiment of the present invention related to FIG. 6 will be described.

Step 601. The terminal receives the configuration information from the primary access network device.

In a specific example, the configuration information includes status instruction information. The terminal may enter the first mode based on the status instruction information.

In a particular example, the configuration information may include one or both of the paging area identifier and the paging area parameter. The terminal may enter the first mode based on one or both of the paging area identifier and the paging area parameter. Hereinafter, the paging area identifier and the paging area parameter will be briefly described.

The paging area identifier is used to identify the serving cell of the terminal in the coverage of the first access network device. The terminal may determine the paging area for the terminal in the first mode based on the paging area identifier. For example, if the terminal paging area identifier in the current serving cell of the first access network device is 1, then the paging area for the terminal in the first mode is paging area 1; the first access network device. If the terminal paging area identifier in the current serving cell of the network device is 2, then the paging area for the terminal in the first mode is paging area 2, and so on. Indeed, there may be other implementations of the specific form of the paging area identifier. This is not limited to this embodiment of the invention.

The paging area parameter is used to determine the paging area information for the terminal in the first mode. For example, the paging area parameter may include a paging area cell list, the paging area cell list contains at least one cell, and the terminal terminals the cells in the paging area cell list. May be used as a paging area for. For another embodiment, the paging area parameter includes a paging area identifier list, the paging area identifier list contains at least one paging area identifier, and the terminal is included in the paging area identifier list. The cell corresponding to the area identifier may be used as the paging area of the terminal.

In a specific example, the configuration information may further include a first terminal identifier, which may be an identifier used by the terminal in the network in which the terminal is currently located. The terminal may store the first terminal identifier.

In a specific example, the configuration information may further include a first terminal identifier and a second terminal identifier. In this case, the first terminal identifier is the identifier used by the terminal in the first standard network, and the second terminal identifier is the identifier used by the terminal in the second standard network. For example, if the terminal is in a first standard network, the terminal may perform paging listening in the paging area of the first standard network by using the first terminal identifier. For another embodiment, if the terminal is in a second standard network, the terminal may perform paging listening in the paging area of the second standard network by using the second terminal identifier. Use a different wireless access technology than the 1st and 2nd standard networks. For example, a first standard network uses first access technology, and a second standard network uses second access technology. Where possible, the first standard network may be an LTE network or a 5G network, and the second standard network may be a network of any standard different from the first standard network.

In this embodiment, the paging area cell list may contain cells of at least two networks of different standards, or the paging area identifier list may contain at least two paging area identifiers, and two paging. -Area identifiers correspond to network cells of different standards.

Step 602. The terminal enters the first mode.

Specifically, after the terminal enters the first mode, the interface between the terminal and the core network device in the first mode remains in the first access network device, and the terminal remains in the paging area. It is not necessary to notify the first access network device when moving, but notify the first access network device when moving out of the paging area.

In a specific example, the terminal may optionally determine the paging area information for the terminal in the first mode based on the paging area parameters.

Step 603. The terminal sends a message carrying the first terminal identifier to the second access network device.
For the sake of brevity, the message carrying the first terminal identifier will be referred to hereafter as the first message.

The first message may be used to instruct the second access network device to use the terminal's first terminal identifier. Optionally, the first message may be an RRC connection restore request message, an RRC connection reestablishment message, a location update message, or an RRC connection resume message.

In a specific example, the terminal may send a first message to the second access device when entering the coverage of the second access network device.

In another embodiment, the terminal may send the first message to the second access device when it receives the paging message sent by the second access network device. For example, the second access network device is within the paging area of the terminal, and the terminal listens for paging messages sent by the cells of the second access network device. When the terminal receives a paging message to the terminal, the terminal sends the first message to the second access network device. In this embodiment, the first message may carry the paging response of the terminal.

In a possible implementation, the terminal may use the first terminal identifier to listen to the paging message. If the paging message carries the first terminal identifier, the terminal determines that the terminal is called by the second access network device.

In another possible implementation, the configuration information further includes a second terminal identifier. In this case, as described in the specific example in step 601, the first terminal identifier and the second terminal identifier are identifiers used by the terminals in the first standard network and the second standard network, respectively. Optionally, the first access network device and the second access network device may use the same access technology or different access technologies. For example, the first access network device may use the first access technology, and the second access network device may use the first access technology or the second access technology. In some cases, if the second access network device uses the first access technology, the first access network device sends the first terminal identifier to the second access network device. Accordingly, the terminal currently camping on the second access network device listens for the paging message by using the first terminal identifier. If listening detects that the paging message is carrying the first terminal identifier, the terminal determines that the terminal is called by the second access network device. In another case, if the second access network device uses the second access technology, the first access network device sends the second terminal identifier to the second access network device. Accordingly, the terminal currently camping on the second access network device listens for the paging message by using the second terminal identifier. If listening detects that the paging message is carrying a second terminal identifier, the terminal determines that the terminal is called by the second access network device.

In a specific example, the first message may also carry access technology type information. The access technology type information is used to notify the second access network device that the wireless access technology used by the first access network device that assigns the first terminal identifier to the terminal is the first access technology. used. Alternatively, the access technology type information is that the wireless access technology used by the first access network device that assigns the first terminal identifier to the terminal is the wireless access technology used by the second access network device. Used to notify the second access network device of the difference.

In a specific example, the first message may also carry information indicating that the terminal is in the first mode. The second access network device may informedly determine the status of the terminal.

In a specific example, the first message may also carry a transmission instruction. Transmission instructions are used to indicate whether the terminal has data and / or signaling to be transmitted. The second access network device may determine whether the terminal has data and / or signaling to be transmitted according to the transmission instructions.

In a specific example, the first message may also carry a paging area update instruction. The second access network device may determine that the terminal has moved out of the paging area area according to the paging area update instruction. For example, in one scenario, the second access network device manages multiple cells, some of the cells belong to the paging area, and the other cells do not belong to the paging area. .. If the terminal moves to a cell that does not belong to the paging area, the terminal may send a paging area update instruction to the second access network device by using the first message. The second access network device may determine that the terminal has moved out of the paging area area according to the paging area update instruction.

In a specific example, after transmitting the first message to the second access network device, the terminal may further receive the connection establishment instruction transmitted by the second access network device. The terminal may send a tracking area update command to the core network device according to the connection establishment instruction. Specifically, after receiving the first message, the second access network device determines that there is no interface between the second access network device and the first access network device. And a connection establishment instruction may be sent to the terminal to instruct the terminal to establish a new connection. The terminal issues a tracking area update command to the core network by deleting the saved connection context, establishing a new connection according to the connection establishment instructions, and then using the new connection established. • May be sent to the device, which causes the core network device to open the connection between the first access network device and the core network device based on the tracking area update command. ..

Step 604. The second access network device sends the first terminal identifier to the first access network device.

Specifically, the second access network device may determine that the terminal has moved from the first access network device to the second access network device based on the first message. Sends the first terminal identifier to the first access network device to get the terminal context.

In a specific example, the first terminal identifier includes a terminal ID (identification) and an access network device ID. If the first message carries access technology type information, the second access network device will have the terminal access second access based on the first terminal identifier and access technology type information in order to obtain the terminal context. It may be determined that the access network device serving the terminal before moving into the coverage of the network device is the first access network device. Specifically, the second access network device first determines the wireless access technology used by the access network device that is responding to the terminal before the terminal moves, based on the access technology type information. After that, in a network using wireless access technology and by using the access network device ID, the access network device that is responding to the terminal before the terminal moves is the first access. Determine that it is a network device and finally get the terminal context from the first access network device by using the terminal ID.

In a specific example, the second access network device may send the first terminal identifier to the first access network device by using a message. For the sake of brevity, the message is referred to as the second message. For example, the second message may be a terminal information instruction message, a terminal location update message, or a context request message. In a possible implementation, the second access network device uses the first terminal identifier as the first access network, depending on whether the first message carries information indicating that the terminal is in the first mode. You may decide which message will be used to send to the device. For example, if the first message carries information indicating that the terminal is in the first mode, the second access network device may use the terminal information instruction message or the terminal location update message to perform the first message. 1 Send the terminal identifier to the first access network device. Alternatively, if the first message does not carry information indicating that the terminal is in the first mode, the second access network device uses the context request message to obtain the first terminal identifier. Send to the first access network device.

In a specific example, if the first message carries information indicating that the terminal is in the first mode, the second access network device will carry information indicating that the terminal is in the first mode in the second message. It may be added to the first access network device, which informally determines the current mode of the terminal.

In a specific example, if the first message carries a send instruction, the second access network device may add more send instructions to the second message, thereby causing the first access network device. , Determines whether the terminal currently has data and / or signaling to be transmitted, in response to transmission instructions.

In a specific example, if the first message carries a paging area update instruction, the second access network device may add more paging area update instructions to the second message, thereby. The first access network device determines whether or not the terminal has moved out of the paging area area in response to the paging area update instruction.

Step 605. The first access network device sends a terminal context or terminal hold instruction to the second access network device based on the first terminal identifier.

In a specific example, the first access network device may send a context transfer message to the second access network device, and the context transfer message carries the terminal context. The context transfer message may be referred to as a context move message. For example, the context move message may be a handover message or a context response message.

In a specific example, the first access network device may send a terminal hold instruction to the second access network device when deciding to switch the terminal to hold mode. Hold mode means that the interface between the terminal and the core network device remains on the first access network device, but the interface is deactivated. After receiving the terminal hold instruction, the second access network device may send a hold command to the terminal in response to the terminal hold instruction.

In a specific example, the first access network device may determine the status of the terminal based on the type of second message. For example, if the second message is a terminal information instruction message or a terminal location update message, the first access network device may determine that the terminal is in the first mode. Further, if the first access network device determines that the terminal is in the first mode, the first access network device performs a context move procedure or a hold procedure, and the terminal context or terminal. The hold instruction may be sent to the second access network device.

In a possible implementation, the first access network device decides whether to perform a context move procedure or a hold procedure, depending on whether the second message carries a send or paging area update instruction. You may decide. For example, if the second message carries a send instruction, the first access network device executes the context move procedure. For another embodiment, if the second message does not carry a send instruction, the first access network device performs a hold procedure. For another embodiment, if the second message carries a paging area update instruction, the first access network device performs a pending procedure.

In a specific example, the first access network device may determine the status of the terminal depending on whether the second message carries information indicating that the terminal is in the first mode. For example, the first access network device may determine that the terminal is in the first mode if the second message carries information indicating that the terminal is in the first mode. In addition, if the first access network device determines that the terminal is in the first mode, the first access network device executes a context move procedure or hold procedure, and the terminal context or terminal hold instructions. May be sent to a second access network device. The specific implementation of executing a context move or hold procedure by the first access network device is similar to the process of implementing a context move or hold procedure in the example above. For details, refer to the detailed description of the above specific example. Details will not be explained here again.

The solutions provided in embodiments of the present invention are primarily described above in terms of interaction between various network elements. To implement the above functionality, the first access network device, the second access network device, the core network device, and the terminal shall have the corresponding hardware structure and / or software to perform the function. -It can be understood to include modules. The units and algorithm steps in the embodiments described in connection with the embodiments disclosed in the present invention may be implemented in the embodiments of the present invention by hardware or a combination of hardware and computer software. .. Whether a function is performed by the hardware or the computer software that drives the hardware depends on the design constraints of the particular application and technical solution. For each particular application, one of ordinary skill in the art may use different methods to implement the described functionality, but the implementation should be considered beyond the scope of the technical solutions in the embodiments of the present invention. is not it.

In the embodiment of the present invention, even if the division of the functional unit is performed with respect to the first access network device, the second access network device, the core network device, the terminal, etc., based on the above method example. Good. For example, the division of functional units may be based on various functions, or two or more functions may be integrated into one processing unit. The integrated unit may be implemented in the form of hardware or in the form of software functional units. It should be noted that the unit divisions in the embodiments of the present invention are specific examples and merely logical functional divisions, and may be other divisions in actual implementation.

FIG. 7 is a schematic block diagram of the first access network device, in which the units of the first access network device are integrated according to embodiments of the present invention. The first access network device 700 includes a processing unit 702 and a communication unit 703. The processing unit 702 is configured to control and manage the actions of the first access network device 700. For example, the processing unit 702 includes steps 302, 306, and 308 in FIG. 3, steps 402, 404, 405, and 409 in FIG . 4, steps 502, 504, 505, and 509 in FIG . 5, and steps 601 and 509 in FIG. The first access network device 700 is configured to perform 605 and / or other processes used in the techniques described herein. The communication unit 703 is configured to allow the first access network device to communicate with other network elements (eg, the second access network device or the core network device). The first access network device 700 may further include a storage unit 701 configured to store the program code and data of the first access network device 700.

The processing unit 702 may be a processor or a controller. The communication unit 703 may be a communication interface, a transceiver, a transceiver circuit, or the like. The communication interface is a set name. In a specific implementation, the communication interface includes multiple interfaces, such as an interface between access network devices, an interface between an access network device and a core network device, and / or other interfaces. It may be. The storage unit 701 may be a memory.

FIG. 8 is a schematic block diagram of the second access network device, in which the units of the second access network device are integrated according to embodiments of the present invention. The second access network device 800 includes a processing unit 802, a first communication unit 803, and a second communication unit 804. The processing unit 802 is configured to control and manage the actions of the second access network device 800. For example, the processing unit 802 is described herein in steps 303 and 305 in FIG. 3, steps 406, 408, and 410 in FIG . 4, steps 506 and 508 in FIG . 5, steps 604 in FIG. 6, and / or this specification. The second access network device 800 is configured to perform other processes used in the technology. The first communication unit 803 is configured so that the second access network device 800 can communicate with other access network devices or core network devices. The second communication unit 804 is configured so that the second access network device 800 can communicate with the terminal. The second access network device 800 may further include a storage unit 801 configured to store the program code and data of the second access network device 800.

The processing unit 802 may be a processor or a controller. The first communication unit 803 may be a communication interface. The communication interface is a set name. In a specific implementation, the communication interface includes multiple interfaces, such as an interface between access network devices, an interface between an access network device and a core network device, and / or other interfaces. It may be. The second communication unit may be a transceiver, a transceiver circuit, or the like. The storage unit 801 may be a memory.

When the processing unit 702 is a processor, the communication unit 703 is a communication interface, and the storage unit 701 is a memory, the structure of the first access network device in this embodiment of the present invention is shown in FIG. It may be an access network device structure. This embodiment of the present invention when the processing unit 802 is a processor, the first communication unit 803 is a communication interface, the second communication unit 804 is a transmitter / receiver, and the storage unit 801 is a memory. The structure of the second access network device in the above may also be the access network device structure shown in FIG.

FIG. 9 is a possible schematic structure diagram of an access network device according to an embodiment of the present invention.

The access network device 900 includes a processor 902 and a communication interface 904. Processor 902 may also be a controller and is represented in FIG. 9 as "controller / processor 902". Communication interface 904 is configured to allow access network devices to communicate with other network elements (eg, other access network devices or core network devices). In addition, the access network device 900 may further include a transmitter / receiver 901. The transmitter / receiver 901 will support the transmission and reception of information between the access network device and the terminal in the above embodiments, and will support wireless communication between the terminal and other terminals. It is composed. Processor 902 performs various functions for communicating with the terminal. In the uplink, the uplink signal from the terminal is received by the antenna, demodulated by the receiver 901 (eg, the high frequency signal is demodulated to the baseband signal), and the service data and signaling information transmitted by the terminal. Further processed by processor 902 to restore. In the downlink, service data and signaling messages are processed by processor 902 and modulated by transmitter 901 to generate downlink signals (eg, baseband signals are modulated to high frequency signals) and down. The link signal is transmitted to the terminal by using the antenna. It should be noted that the demodulation or modulation function described above may be performed by processor 902 instead.

For example, if the access network device 900 is the first access network device, the processor 902 is described in the processing process of the first access network device in the methods of FIGS. 3 to 6 and / or the present application. Further configured to perform other processes in the technical solutions. Alternatively, if the access network device 900 is the second access network device, the processor 902 is the processing process of the second access network device in the method of FIGS. 3-6, and / or in the present application. It is further configured to perform other processes in the technical solutions described.

Further, the access network device 900 may further include memory 903. The memory 903 is configured to store the program code and data of the access network device 900.

It can be understood that Figure 9 simply illustrates the simplified design of the Access Network Device 900. In a real application, the access network device 900 may include any number of transmitters, receivers, processors, controllers, memories, communication units and the like. All access network devices to which the embodiments of the present invention can be implemented shall fall within the scope of protection of the embodiments of the present invention.

FIG. 10 is a schematic block diagram of the core network device, in which the units of the core network device are integrated according to embodiments of the present invention. The core network device 1000 includes a processing unit 1002 and a communication unit 1003. Processing unit 1002 is configured to control and manage the actions of core network devices. For example, processing unit 1002 cores steps 301 and 307 in FIG. 3, steps 401 and 410 in FIG . 4, step 501 in FIG. 5, and / or other processes used in the techniques described herein. • Configured to run network devices. Communication unit 1003 is configured to allow core network devices to communicate with other network entities. The core network device may further include a storage unit 1001 configured to store the program code and data of the core network device.

The processing unit 1002 includes, for example, a central processing unit (CPU), a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), and a field programmable. It may be a processor or controller such as a Field Programmable Gate Array (FPGA) or other programmable logic device, transistor logic device, hardware component, or a combination thereof. The processing unit 1002 may implement or execute various specific examples of logic blocks, modules, and circuits described in connection with the contents disclosed in the present invention. Alternatively, the processing unit 1002 may be a combination of processors that implement computing functions, such as a combination of one or more microprocessors, or a combination of DSPs and microprocessors. The communication unit 1003 may be a communication interface, a transceiver, a transceiver circuit, or the like. The communication interface is a set name. In a specific implementation, the communication interface may include multiple interfaces, such as an interface between a core network device and an access network device, and / or other interfaces. Storage unit 1001 may be memory.

When the processing unit 1002 is a processor, the communication unit 1003 is a communication interface, and the storage unit 1001 is a memory, the core network device in this embodiment of the present invention is the core network shown in FIG. -It may be device 1100.

Referring to FIG. 11, core network device 1100 includes processor 1102, communication interface 1103, and memory 1101. Optionally, the core network device 1100 may further include a bus 1104. The communication interface 1103, the processor 1102, and the memory 1101 may be connected to each other by using the bus 1104. The bus 1104 may be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. Bus 1104 may be classified into an address bus, a data bus, a control bus, and the like. For the sake of brevity, only one thick line is used to represent a bus in Figure 11, but this does not mean that there is only one bus or only one type of bus.

FIG. 12 is a schematic block diagram of the terminal, in which the terminal units are integrated according to embodiments of the present invention. The terminal 1200 includes a processing unit 1202 and a communication unit 1203. The processing unit 1202 is configured to control and manage the actions of the terminal 1200. For example, processing unit 1202 is used in steps 304 in FIG . 3, steps 403 and 407 in FIG . 4, steps 503 and 507 in FIG . 5, steps 602 and 603 in FIG. 6, and / or the techniques described herein. The terminal 1200 is configured to execute other processes. Communication unit 1203 is configured to allow terminals to communicate with other network elements. The terminal 1200 may further include a storage unit 1201 configured to store the program code and data of the terminal 1200.

If the processing unit 1202 is a processor, the communication unit 1203 is a communication interface, and the storage unit 1201 is a memory, the terminal in this embodiment of the present invention may be the terminal shown in FIG.

FIG. 13 is a simplified schematic diagram of a possible design structure of a terminal according to an embodiment of the present invention. The terminal 1300 includes a transmitter 1301, a receiver 1302, and a processor 1303. Processor 1303 may also be a controller and is referred to as "controller / processor 1303" in FIG. Optionally, the terminal 1300 may further include a modem processor 1305. The modem processor 1305 may include an encoder 130 6 , a modulator 1307, a decoder 1308, and a demodulator 1309.

In a specific example, transmitter 1301 tunes the output sample (eg, digital-to-analog conversion, filtering, amplifying, and up-converting) and produces an uplink signal. The uplink signal is transmitted to the base station in the above embodiment by using an antenna. In the downlink, the antenna receives the downlink signal transmitted by the base station in the above embodiment. Receiver 1302 regulates the signal received from the antenna (eg, filters, amplifies, down-converts, and digitizes) and provides input samples. In modem processor 1305, encoder 130 6 receives service data and signaling messages to be transmitted on the uplink and processes service data and signaling messages (eg, formats and encodes). , And interleave). Modulator 1307 further processes the encoded service data and signaling messages (eg, performs symbol mapping and modulates), and provides output samples. Demodulator 1309 processes the input sample (eg, demodulates) and provides symbol estimation. Decoder 1308 processes symbol estimation (eg, deinterleaves and decodes) and provides decoded data and signaling messages to be sent to terminal 1300. The encoder 130 6 , the modulator 1307, the demodulator 1309, and the decoder 1308 may be implemented by the combined modem processor 1305. These units perform processing based on the radio access technology used by the radio access network (eg, the access technology used by LTE systems and other evolved systems). It should be noted that if the terminal 1300 does not include a modem processor 1305, the above functions of the modem processor 1305 may be performed by processor 1303.

Processor 1303 controls and manages the actions of the terminal 1300, and configured to perform the treatment process more implemented in end end in the above embodiment of the present invention. For example, processor 1303 is further configured to perform the terminal processing process in the methods of FIGS. 3 to 6 and / or other processes in the technical solutions described herein.

Further, the terminal 1300 may further include memory 1304. The memory 1304 is configured to store the program code and data of the terminal 1300.

The methods and algorithm steps described in connection with the contents disclosed in the embodiments of the present invention may be implemented by hardware or by a processor by executing software instructions. Software instructions may include the corresponding software module. Software modules include Random Access Memory (RAM), flash memory, Read - Only Memory (ROM), and erasable programmable read-only memory (Erasable Programmable). ROM, EPROM), electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), registers, hard disks, removable hard disks, compact disk read-only memory (CD- It may be stored in ROM) or any other form of storage medium well known in the art. For example, the storage medium is coupled to the processor, which allows the processor to read information from the storage medium and write the information to the storage medium. Indeed, the storage medium may be a component of the processor. The processor and storage medium may be located in the ASIC. In addition, the ASIC may be located at a base station or terminal. Indeed, the processor and storage medium may be present as separate elements in the base station or terminal.

Those skilled in the art should be aware that in one or more of the above embodiments, the functionality described in embodiments of the present invention may be implemented by hardware, software, firmware, or any combination thereof. .. If the features are implemented in software, these features may be stored on a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. Computer-readable media include storage media and communication media. Communication media include any medium that allows a computer program to be transmitted from one location to another. The storage medium may be any available medium accessible for general purpose or dedicated computers.

In the above specific implementation, the objectives, technical solutions, and advantageous effects of embodiments of the present invention will be described in more detail. It should be understood that the above description is merely a specific implementation of the embodiments of the invention and is not intended to limit the scope of protection of the embodiments of the invention. Any modifications, equal substitutions, or improvements made based on the technical solutions in the embodiments of the invention shall fall within the scope of protection of the embodiments of the invention.

Claims (30)

A communication method applied to a communication system, wherein the communication system has a paging area, and at least a first access network device and a second access network device are present in the paging area. There is a link between the first access network device and the core network device, and the method is:
The step of receiving signaling directed to a terminal from the core network device by the first access network device;
The step of transmitting a paging message to the second access network device by the first access network device, wherein the paging message is used to call the terminal; and the first. It is a step of receiving the first instruction information from the second access network device by the one access network device, and the first instruction information is obtained by the terminal connecting to the second access network device. Steps used to indicate that
Method to have. The method according to claim 1:
The step of transmitting the second instruction information to the core network device by the first access network device, and the second instruction information is such that the terminal goes out of the coverage area of the first access network device. A method with additional steps used to indicate that it has moved. The step of transmitting the second instruction information to the core network device by the first access network device according to the method of claim 2.
A step of transmitting a response message to the signaling to the core network device by the first access network device, wherein the response message carries the second instruction information; or the first. The step of transmitting a signaling failure message to the core network device by the access network device, wherein the signaling failure message carries the second instruction information, and the signaling has not been successfully transmitted. A method with steps used to indicate. The method according to claim 2 or 3, wherein the second instruction information has one or all of the information about the second access network device and the status information of the terminal, and the status information. Is a method used to indicate the status of the terminal. The method according to claim 1:
A method further comprising the step of transmitting the signaling to the second access network device by the first access network device. The step of transmitting the signaling to the second access network device by the first access network device according to the method of claim 5.
A method having a step of transmitting a context transfer message to the second access network device by the first access network device, wherein the context transfer message carries the signaling. The method according to claim 5 or 6.
The step of receiving the first signaling processing instruction from the second access network device by the first access network device, and the first signaling processing instruction is that the signaling processing is successful or A step used to indicate failure; and a step of transmitting a second signaling processing instruction to the core network device by the first access network device, the second signaling. The processing instruction is used to indicate that the processing of the signaling is successful or unsuccessful, step;
A method of further having. The step of receiving the first signaling processing instruction from the second access network device by the first access network device according to the method of claim 7.
A step of receiving a context transfer achievement message from the second access network device by the first access network device, wherein the context transfer achievement message carries the first signaling processing instruction. A method with steps. A communication method applied to a communication system, wherein the communication system has a paging area, and at least a first access network device and a second access network device are present in the paging area. There is a link between the first access network device and the core network device, and the method is:
A step of receiving a first paging message from the first access network device by the second access network device, wherein the first paging message is used to call a terminal;
The step of transmitting a second paging message to the terminal by the second access network device;
A step of receiving a paging response from the terminal by the second access network device; and a step of transmitting instruction information to the first access network device by the second access network device. , The instruction information is used to indicate that the terminal is connected to the second access network device, step;
Method to have. The method according to claim 9:
A method further comprising the step of receiving signaling directed to the terminal from the core network device by the second access network device. The method according to claim 9:
A method further comprising the step of receiving signaling directed to the terminal from the first access network device by the second access network device. The method of claim 11:
The step of receiving signaling directed to the terminal by the second access network device from the first access network device is:
A method having a step of receiving a context transfer message from the first access network device by the second access network device, wherein the context transfer message carries the signaling. The method according to claim 11 or 12.
The step of transmitting a signaling processing instruction to the first access network device by the second access network device, wherein the signaling processing instruction has succeeded or failed in the processing of the signaling. A method having additional steps, used to indicate that. The step of transmitting a signaling processing instruction to the first access network device by the second access network device according to the method of claim 13.
A step of transmitting a context transfer achievement message to the first access network device by the second access network device, wherein the context transfer achievement message carries the signaling processing instruction. How to have. The step according to any one of claims 9 to 14, wherein the instruction information is transmitted to the first access network device by the second access network device.
A step of transmitting a terminal information instruction message to the first access network device by the second access network device, wherein the terminal information instruction message carries the instruction information; or the second. A method having a step of transmitting a terminal context request message to the first access network device by an access network device, wherein the terminal context request message carries the instruction information. An access network device, the access network device being a first access network device and applied to a communication system, the communication system having a paging area and in the paging area. There is at least the first access network device and the second access network device, there is a link between the first access network device and the core network device, and the first access. -The network device has a processing unit and a communication unit.
The processing unit receives signaling directed to the terminal from the core network device by using the communication unit; by using the communication unit, the paging message is sent to the second access. Sending to a network device, the paging message is used to call the terminal; and by using the communication unit, the first instructional information is transmitted to the second access network. Receiving from the device, the first instruction information is used to indicate that the terminal is connected to the second access network device;
An access network device that is configured to do so. The access network device according to claim 16, wherein the processing unit is further configured to transmit second instruction information to the core network device by using the communication unit. The second instruction information is an access network device used to indicate that the terminal has moved out of the coverage of the first access network device. The access network device according to claim 17, wherein the processing unit specifically transmits a response message to the signaling to the core network device by using the communication unit. The response message carries the second instruction information; or the processing unit specifically sends a signaling failure message to the core network device by using the communication unit. An access network device that is configured to carry the signaling failure message and is used to indicate that the signaling has not been successfully transmitted. The access network device according to claim 17 or 18, wherein the second instruction information has one or all of information about the second access network device and status information of the terminal. And the status information is an access network device used to indicate the status of the terminal. The access network device of claim 16, wherein the processing unit is further configured to transmit the signaling to the second access network device by using the communication unit. Access network device. The access network device according to claim 20, wherein the processing unit specifically transmits a context transfer message to the second access network device by using the communication unit. The access network device is configured to carry the signaling in the context transfer message. The access network device according to claim 20 or 21, wherein the processing unit receives a first signaling processing instruction from the second access network device by using the communication unit. Therefore, the first signaling processing instruction is used to indicate that the processing of the signaling is successful or unsuccessful; and by using the communication unit, the second signaling processing is performed. Sending an instruction to the core network device, the second signaling processing instruction is used to indicate that the processing of the signaling is successful or unsuccessful; An access network device that is further configured. The access network device according to claim 22, wherein the processing unit specifically uses the communication unit to send a context transfer acknowledgement message from the second access network device. An access network device that is configured to receive and that the context transfer acknowledgement message carries the first signaling processing instruction. An access network device, the access network device being a second access network device, and applied to a communication system, the communication system having a paging area, in the paging area. There is at least a first access network device and a second access network device, there is a link between the first access network device and the core network device, and the second access network device. The network device has a processing unit, a first communication unit, and a second communication unit.
The processing unit uses the first communication unit to receive a first paging message from the first access network device, the first paging message for calling a terminal. To be used; to send a second paging message to the terminal by using the second communication unit; to receive a paging response from the terminal by using the second communication unit. That; and by using the first communication unit, the instruction information is transmitted to the first access network device, and the instruction information is connected to the second access network device by the terminal. An access network device that is configured to do what is used to indicate that it is doing. The access network device according to claim 24, wherein the processing unit uses the first communication unit to receive signaling directed to the terminal from the core network device. Further configured access network device. The access network device according to claim 24, wherein the processing unit receives signaling directed to the terminal from the first access network device by using the first communication unit. An access network device that is further configured. The access network device according to claim 26, wherein the processing unit specifically receives a context transfer message from the first access network device by using the first communication unit. An access network device that is configured to carry the signaling. The access network device according to claim 26 or 27, wherein the processing unit uses the first communication unit to transmit a signaling processing instruction to the first access network device. An access network device that is further configured and the signaling processing instructions are used to indicate that the signaling processing is successful or unsuccessful. 28. The access network device of claim 28, wherein the processing unit specifically uses the first communication unit to send a context transfer acknowledgement message to the first access network. An access network device that is configured to send to the device and that the contextual forwarding accreditation message carries the signaling processing instructions. The access network device according to any one of claims 24 to 29, wherein the processing unit specifically uses the first communication unit to send a terminal information instruction message. The terminal information instruction message is configured to transmit to a first access network device; or the processing unit specifically by using the first communication unit. An access network device that is configured to send a terminal context request message to the first access network device, which carries the instructional information.

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