CN117580183A

CN117580183A - Network priority negotiation method and related equipment

Info

Publication number: CN117580183A
Application number: CN202410061777.2A
Authority: CN
Inventors: 魏珍荣; 薛子涛
Original assignee: Honor Device Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2024-01-16
Filing date: 2024-01-16
Publication date: 2024-02-20
Anticipated expiration: 2044-01-16
Also published as: CN117580183B

Abstract

The application provides a network priority negotiation method, which is applied to the field of communication. The negotiating party of the network priority comprises the following steps: the access network device receives a first message from a first terminal device. The first message includes a category identification of the first terminal device. The access network equipment generates a second message according to the category identification of the first terminal equipment. The access network device sends a second message to the first terminal device through the first network. The second message includes instructions to decrease network priority. The instruction for reducing the priority of the network is used for instructing the first terminal device to reduce the priority of the first network. In the technical scheme provided by the application, the access network equipment can determine whether to reduce the network priority of the terminal equipment through the category identification of the terminal equipment, so that the user experience is improved.

Description

Network priority negotiation method and related equipment

Technical Field

The present disclosure relates to the field of communications, and in particular, to a method and related device for negotiating network priority.

Background

In the field of communications, networks introduce signaling over protocols that reduces radio access technology (radio access technology, RAT) priority based on congestion and overload considerations. The access network device sends an instruction to reduce the network priority to a User Equipment (UE). The User Equipment (UE) decreases the current RAT priority according to the instruction to decrease the network priority. For example, the UE drops back from the 5G network to the 4G network according to an instruction to decrease the network priority. Thus, the UE may not be able to return to the 5G network for a period of time, thereby degrading the user experience.

Disclosure of Invention

The application provides a negotiation method of network priority and related equipment, wherein access network equipment can determine whether to reduce the network priority of terminal equipment through category identification of the terminal equipment, so that user experience is improved.

The first aspect of the present application provides a method for negotiating network priority. The negotiation method of the network priority can be applied to the access network equipment, the access network device or the processing chip. The following describes a network priority negotiation method by taking an example that the network priority negotiation method is applied to access network equipment. The negotiation method of the network priority comprises the following steps: the access network device receives a first message from a first terminal device. The first message includes a category identification of the first terminal device. The access network equipment generates a second message according to the category identification of the first terminal equipment. The access network device sends a second message to the first terminal device through the first network. The second message includes instructions to decrease network priority. The instruction for reducing the priority of the network is used for instructing the first terminal device to reduce the priority of the first network.

In the present application, when the access network device needs to reduce the network priority of a part of the terminal devices, the access network device may preferentially reduce the network priority of the terminal devices of the first category, so as not to reduce the network priority of the terminal devices of the second category. Therefore, the method and the device can avoid the terminal equipment of the second category from falling back from the first network to the second network, and therefore user experience is improved. The transmission rate of the first network is higher than the transmission rate of the second network. For example, the first network is a 5G network and the second network is a 4G network.

In an alternative form of the first aspect, the category identification of the first terminal device indicates that the first terminal device belongs to the first category. The terminal devices of the first category do not include a display screen and the terminal devices of the second category include a display screen. Terminal devices that include a display screen generally have a high demand for transmission rate and a user's perception of changes in transmission rate is high. Therefore, the user experience can be improved by classifying the terminal equipment by whether the display screen is included or not.

In an alternative form of the first aspect, the first message is a registration request message. By carrying the category identifier of the terminal device in the registration request message, the access network device can acquire the category identifier of the terminal device in advance. Therefore, when the network priority needs to be reduced, the access network equipment can directly reduce the network priority of the terminal equipment according to the category identification acquired in advance. Therefore, the method and the device can reduce the signaling transmission times between the access network equipment and the terminal equipment and save transmission resources.

In an alternative form of the first aspect, the class identification of the first terminal device is located in a first level information element (information element, IE) in the registration request message.

In an alternative form of the first aspect, the second message further comprises information indicating the extent of the first area. The instruction for reducing the priority of the network is used for instructing the first terminal device to reduce the priority of the first network, and comprises the following steps: the instruction to decrease the priority of the network and the information of the first area range are used for indicating that the priority of the first network is decreased when the first terminal equipment is in the first area range. The information of the first area range is further used for indicating that the first terminal equipment is not used for reducing the priority of the first network according to the instruction for reducing the priority of the network when the first terminal equipment is out of the first area range. By adding the information of the first area range, the network priority of the terminal equipment can be controlled more flexibly. Therefore, the user experience can be improved.

In an alternative form of the first aspect, the information of the first area range is a tracking area identity (tracking area identity, TAI). In practical applications, the information of the first area range may also be a Physical Cell ID (PCI). In practical applications, multiple PCIs may correspond to the same TAI. At this time, the data size of the plurality of PCIs is larger than the data size of the TAI. Therefore, the method and the device can save transmission resources.

In an alternative form of the first aspect, the second message is a radio resource control (radio resource control, RRC) release message.

The second aspect of the present application provides a method for negotiating network priority. The negotiation method of the network priority comprises the following steps: the first terminal device sends a first message to the access network device. The first message includes a category identification of the first terminal device. The first terminal device receives a second message from the access network device over the first network. The second message includes instructions to decrease network priority. The instruction for lowering the network priority is obtained according to the category identification of the first terminal device. If the first condition is satisfied, the first terminal device reduces the priority of the first network. The first condition includes: the first terminal device receives an instruction for reducing the network priority.

In an alternative form of the second aspect, the category identification of the first terminal device indicates that the first terminal device belongs to the first category. The terminal devices of the first category do not include a display screen and the terminal devices of the second category include a display screen.

In an alternative form of the second aspect, the first message is a registration request message.

In an alternative form of the second aspect, the class identification of the first terminal device is located in a first level information element in the registration request message.

In an alternative form of the second aspect, the second message further includes information indicating the range of the first area, and the method of negotiating the network priority further includes the steps of: the first terminal device does not decrease the priority of the first network when the first terminal device is out of the first area range according to the information of the first area range. The first condition further includes: the first terminal device is within the first area.

In an alternative form of the second aspect, the information of the first area range is TAI.

In an alternative form of the second aspect, the second message is an RRC release message.

In an alternative form of the second aspect, the first condition further includes: the first terminal equipment is not connected with a power supply; or the electric quantity of the first terminal equipment is smaller than a threshold value; or, the first terminal device is in a power saving mode.

A third aspect of the present application provides an access network device. The access network device comprises a receiving unit, a processing unit and a sending unit. The receiving unit is used for receiving the first message from the first terminal device. The first message includes a category identification of the first terminal device. The processing unit is used for generating a second message according to the category identification of the first terminal equipment. The sending unit is used for sending the second message to the first terminal equipment through the first network. The second message includes instructions to decrease network priority. The instruction for reducing the priority of the network is used for instructing the first terminal device to reduce the priority of the first network.

In an alternative form of the third aspect, the terminal devices of the first category do not comprise a display screen, and the terminal devices of the second category comprise a display screen.

In an alternative form of the third aspect, the first message is a registration request message.

In an alternative form of the third aspect, the class identification of the first terminal device is located in a first level information element in the registration request message.

In an alternative form of the third aspect, the second message further comprises information indicating the extent of the first area. The instruction for reducing the priority of the network is used for instructing the first terminal device to reduce the priority of the first network, and comprises the following steps: the instruction to decrease the priority of the network and the information of the first area range are used for indicating that the priority of the first network is decreased when the first terminal equipment is in the first area range. The information of the first area coverage is further used for indicating that the priority of the first network is not reduced when the first terminal device is out of the first area coverage.

In an alternative form of the third aspect, the information of the first area range is TAI.

In an alternative form of the third aspect, the second message is an RRC release message.

A fourth aspect of the present application provides a first terminal device. The first terminal device comprises a receiving unit, a sending unit and a processing unit. The sending unit is used for sending the first message to the access network equipment. The first message comprises a category identification of said first terminal device. The receiving unit is configured to receive a second message from the access network device via the first network. The second message includes instructions to decrease network priority. The instruction for lowering the network priority is obtained according to the category identification of the first terminal device. The processing unit is configured to reduce the priority of the first network if the first condition is satisfied. The first condition includes: the first terminal device receives an instruction for reducing the network priority.

In an alternative form of the fourth aspect, the category identification of the first terminal device indicates that the first terminal device belongs to the first category. The terminal devices of the first category do not include a display screen and the terminal devices of the second category include a display screen.

In an alternative form of the fourth aspect, the first message is a registration request message.

In an alternative form of the fourth aspect, the class identification of the first terminal device is located in a first level information element in the registration request message.

In an alternative form of the fourth aspect, the second message further includes information indicating a range of the first area, and the negotiation method of the network priority further includes the steps of: the first terminal device does not decrease the priority of the first network when the first terminal device is out of the first area range according to the information of the first area range. The first condition further includes: the first terminal device is within the first area.

In an alternative form of the fourth aspect, the information of the first area range is TAI.

In an alternative form of the fourth aspect, the second message is an RRC release message.

In an alternative form of the fourth aspect, the first condition further includes: the first terminal equipment is not connected with a power supply; or the electric quantity of the first terminal equipment is smaller than a threshold value; or, the first terminal device is in a power saving mode.

An access network device in a fifth aspect. The access network device includes a transceiver and a processor. The transceiver is configured to receive a first message from a first terminal device. The first message includes a category identification of the first terminal device. The processor is used for generating a second message according to the category identification of the first terminal equipment. The transceiver is configured to send a second message to the first terminal device according to the class identifier of the first terminal device. The second message includes instructions to decrease network priority. The instruction for reducing the priority of the network is used for instructing the first terminal device to reduce the priority of the first network.

A first terminal device in the sixth aspect. The first terminal device includes a transceiver and a processor. The transceiver is configured to send a first message to an access network device. The first message includes a category identification of the first terminal device. The transceiver is also configured to receive a second message from the access network device over the first network. The second message includes instructions to decrease network priority. The instruction for lowering the network priority is obtained according to the category identification of the first terminal device. The processor is configured to decrease the priority of the first network if the first condition is satisfied. The first condition includes: the first terminal device receives an instruction for reducing the network priority.

It will be appreciated that there is similarity in relation to the access network device described in the fifth aspect and the method of negotiating network priorities described in the first aspect or any of the alternatives thereof. Thus, with respect to the access network device described in the fifth aspect, reference can be made to the foregoing first aspect or the method of negotiating network priorities described in any of the alternatives of the first aspect. Similarly, there is a similarity in relation to the terminal device described in the sixth aspect and the method of negotiating network priorities described in the foregoing second aspect or any of the optional manners of the second aspect. Thus, regarding the terminal device described in the sixth aspect, reference can be made to the method of negotiating network priorities described in the foregoing second aspect or any of the optional manners of the second aspect.

A seventh aspect of the present application provides a communication system. The communication system comprises the access network device described in the fifth aspect and the terminal device described in the sixth aspect.

An eighth aspect of the present application provides a processing chip. The processing chip comprises processing circuitry for performing the method of negotiating network priorities as described in the first aspect, any of the alternatives of the first aspect, the second aspect or any of the alternatives of the second aspect.

A ninth aspect of the present application provides a computer readable storage medium storing instructions that, when executed by a computer, implement a method of negotiating a network priority as described in the first aspect, any one of the alternatives of the first aspect, the second aspect or any one of the alternatives of the second aspect.

A tenth aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of negotiating network priorities as described in the first aspect, any of the alternatives of the first aspect, the second aspect or any of the alternatives of the second aspect.

The technical effects of any one of the second aspect to the tenth aspect may be referred to the technical effects of the first aspect and the different alternatives of the first aspect, and are not described herein.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system;

fig. 2 is a schematic structural diagram of a radio access network device;

fig. 3 is a first flowchart of a method for negotiating network priority according to an embodiment of the present application;

fig. 4 is a second flowchart of a method for negotiating network priority according to an embodiment of the present application;

Fig. 5 is a third flowchart of a method for negotiating network priority according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of an RRC release message provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of an access network device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a first terminal device provided in an embodiment of the present application;

fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication system provided in the present application.

Description of the embodiments

The technical solutions in the present application will be described below with reference to the drawings in the present application. All other solutions obtained by a person skilled in the art without making any inventive effort on the basis of the present application are within the scope of protection of the present application.

First, some terms in this application are explained for easy understanding by those skilled in the art.

(1) Terminal equipment: may be a wireless terminal device capable of receiving network device scheduling and indication information. The wireless terminal device may be a device that provides voice and/or data connectivity to a user, or a handheld device with wireless connectivity, or other processing device connected to a wireless modem.

The terminal device may communicate with one or more core networks or the internet via a radio access network (radio access network, RAN). The terminal device may also be referred to as a terminal, user Equipment (UE), mobile station, mobile terminal, etc. The terminal device may be widely used in various scenarios, such as device-to-device (D2D), vehicle-to-device (vehicle to everything, V2X) communication, machine-type communication (MTC), internet of things (internet of things, IOT), ultra-low-latency communication (URLLC), virtual reality, augmented reality, industrial control, autopilot, telemedicine, smart grid, smart furniture, smart office, smart wear, smart transportation, smart city, or satellite communication. The terminal can be a mobile phone, a tablet personal computer, a computer with a wireless receiving and transmitting function, a wearable device, a vehicle, an unmanned aerial vehicle, a helicopter, an airplane, a hot air balloon, a ship, a robot, a mechanical arm, or intelligent household equipment and the like. The embodiment of the application does not limit the form of the terminal equipment.

In the present application, the means for implementing the function of the terminal device may be the terminal device, or may be a means capable of supporting the terminal device to implement the function, for example, a processor, a circuit, a chip system, or the like, and the means may be installed in the terminal device or used in connection with the terminal device. In the technical solution provided in the present application, the device for implementing the function of the terminal device is an example of the terminal device, and the technical solution provided in the present application is described.

(2) Network equipment: may be a device in a wireless network. For example, the network device is a radio access network (radio access network, RAN) node (or device) that accesses the terminal device to the wireless network. Optionally, the network device may also comprise a core network device, which for example comprises an access and mobility management function (access and mobility management function, AMF), a user plane function (user plane function, UPF) or a session management function (session management function, SMF), etc.

In this application, the means for implementing the function of the network device may be the network device, or may be a means capable of supporting the network device to implement the function, for example, a processor, a circuit, a chip, or a chip system, and the apparatus may be installed in the network device or used in connection with the network device. In the technical solution provided in the present application, an example in which a device for implementing a function of a network device is described in the present application.

(3) The terms "system" and "network" in this application may be used interchangeably. "at least one" means one or more, and "a plurality" means two or more. "and/or", describes an association relationship of an association object, and indicates that there may be three relationships, for example, a and/or B, and may indicate: cases where A alone, both A and B together, and B alone, where A and B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship. "at least one item(s)" below refers to any combination of these items, including any combination of single item(s) or plural items(s). For example, "at least one of A, B, and C" includes A, B, C, AB, AC, BC, or ABC. And, unless otherwise specified, references to "first," "second," etc. in this application are for distinguishing between multiple objects and not for defining the order, timing, priority, or importance of the multiple objects.

The present application may be applied to a variety of possible communication systems. For example, the present application may be applied to long term evolution (long term evolution, LTE) systems, new Radio (NR) systems, open RAN, O-RAN or ora, cloud radio access network (cloud radio access network, CRAN), or new wireless internet of vehicles (NR vehicle to everything, NR V2X) systems. Alternatively, the present application may be applied in systems of hybrid networking of multiple access technologies (e.g., LTE and 5G). Alternatively, the present application may be applied to a device-to-device (D2D) communication system, a machine-to-machine (machine to machine, M2M) communication system, an internet of things (Internet of Things, ioT), or an unmanned aerial vehicle communication system.

Fig. 1 is a schematic diagram of a wireless communication system. As shown in fig. 1, fig. 1 is a schematic diagram of one possible, non-limiting application scenario provided in the present application. The scheme provided in the present application may be applied to the wireless communication system 1000 shown in fig. 1. As shown in fig. 1, the wireless communication system 1000 includes a radio access network (radio access network, RAN) 100 and a core network 200. The radio access network 100 may include at least one radio access network device (e.g., 110a and 110b in fig. 1, collectively 110). The radio access network 100 may also include at least one terminal (e.g., 120a-120j, collectively 120 in fig. 1). Terminals 120a-120j are wirelessly connected to radio access network device 110. Other radio access network devices may also be included in the radio access network 100, such as wireless relay devices and/or wireless backhaul devices (not shown in fig. 1), and the like. The radio access network device 110 is connected to the core network 200 by wireless or wired means. The core network device in the core network and the radio access network device in the radio access network may be different physical devices, or may be the same physical device integrating the core network logic function and the radio access network logic function, which is not limited. The terminals can be connected with each other in a wireless manner. The radio access network device and the radio access network device may be connected to each other by a wired or wireless connection.

Illustratively, in fig. 1, the radio access network 100 may be configured as a third generation partnership project (3rd generation partnership project,3GPP) related cellular system. For example, the radio access network 100 may be configured as a fourth generation (4th generation,4G) mobile communication system, a fifth generation (5th generation,5G) mobile communication system, or a future-oriented evolution system (e.g., a 6G mobile communication system). Alternatively, the radio access network 100 may also be an open RAN, O-RAN or an, cloud radio access network (cloud radio access network, CRAN). The radio access network 100 may also be a communication system in which two or more systems are combined.

The radio access network device 110, which may also be referred to as a radio access network node, an access network device, a radio access network entity, an access node, etc., forms part of a communication system for assisting a terminal in achieving radio access. The plurality of radio access network devices 110 in the communication system 1000 may be the same type of node or different types of nodes. In some scenarios, the roles of radio access network device 110 and terminal 120 are relative, e.g., network element 120i in fig. 1 may be a helicopter or drone, which may be configured as a mobile base station, network element 120i being a base station for those terminals 120j that access radio access network 100 through network element 120 i; but for base station 110a network element 120i is a terminal. The radio access network node 110 and the terminal 120 are sometimes both referred to as communication devices, e.g. in fig. 1 the network elements 110a and 110b may be understood as communication devices with base station functionality and the network elements 120a-120j may be understood as communication devices with terminal functionality.

The radio access network device may be a base station (base station), an evolved NodeB (eNodeB), a transmission and reception point (transmission reception point, TRP), a next generation NodeB (gNB) in a 5G mobile communication system, a next generation base station in a sixth generation (6th generation,6G) mobile communication system, or an access node in a base station in a future mobile communication system, or the like. The radio access network device may be a macro base station (e.g., 110a in fig. 1), a micro base station or an indoor station (e.g., 110b in fig. 1), a relay node or a donor node, or a radio controller in a CRAN scenario. Optionally, the radio access network device may also be a server, a wearable device, or an in-vehicle device, etc. For example, the radio access network device in the vehicle extrapolating (vehicle to everything, V2X) technology may be a Road Side Unit (RSU). The plurality of radio access network devices in the communication system may be the same type of base station or different types of base stations. The base station may communicate with the terminal or may communicate with the terminal through a relay station.

In practical application, a plurality of wireless access network devices can cooperate to assist the terminal to realize wireless access, and different wireless access network devices respectively realize part of functions of the base station. For example, the radio access network device may be a Centralized Unit (CU), a Distributed Unit (DU), a CU-Control Plane (CP), a CU-User Plane (UP), or a Radio Unit (RU), etc. The CUs and DUs may be provided separately or may be included in the same network element, e.g. in a baseband unit (BBU). The RU may be included in a radio frequency device or unit, such as in a remote radio unit (remote radio unit, RRU), an active antenna processing unit (active antenna unit, AAU), or a remote radio head (remote radio head, RRH).

In different systems, CUs (or CU-CP and CU-UP), DUs or RUs may also have different names, but the meaning will be understood by those skilled in the art. For example, in an ORAN system, a CU may also be referred to as an O-CU (open CU), a DU may also be referred to as an O-DU, a CU-CP may also be referred to as an O-CU-CP, a CU-UP may also be referred to as an O-CU-UP, and a RU may also be referred to as an O-RU. Any unit of CU (or CU-CP, CU-UP), DU and RU in the present application may be implemented by a software module, a hardware module, or a combination of software and hardware modules. The CU (or CU-CP and CU-UP), DU and RU can implement different protocol layer functions.

The communication between the radio access network device and the terminal device may follow a certain protocol layer structure. The protocol layers may include a control plane protocol layer and a user plane protocol layer. The control plane protocol layer may include at least one of: a radio resource control (radio resource control, RRC) layer, a packet data convergence layer protocol (packet data convergence protocol, PDCP) layer, a radio link control (radio link control, RLC) layer, a medium access control (media access control, MAC) layer, or a Physical (PHY) layer, etc. The user plane protocol layer may include at least one of: a service data adaptation protocol (service data adaptation protocol, SDAP) layer, PDCP layer, RLC layer, MAC layer, or physical layer, etc.

Fig. 2 is a schematic diagram of the structure of a radio access network device. As an example of implementation, as shown in fig. 2, a radio access network device may include at least one CU and at least one DU. This design may be referred to as CU and DU separation. A CU may be connected to one or more DUs. CUs and DUs may be divided according to the protocol layers of the wireless network: for example, the PDCP layer and functions of the above protocol layers (e.g., RRC layer, SDAP layer, etc.) are set at the CU, and the PDCP layer and functions of the below protocol layers (e.g., RLC layer, MAC layer, PHY layer, etc.) are set at the DU; for another example, the functions of the PDCP layer and the protocol layers above are provided in the CU, and the functions of the PDCP layer and the protocol layers below are provided in the DU, without limitation. When a CU includes a CU-CP for implementing the control plane functions of the CU and a CU-UP for implementing the user plane functions of the CU. For example, when the CU is configured to implement functions of the PDCP layer, the RRC layer, and the SDAP layer, the CU-CP is used to implement functions of the RRC layer and control plane functions of the PDCP layer, and the CU-UP is used to implement functions of the SDAP layer and user plane functions of the PDCP layer. The names of CUs and DUs are not limited in this application.

The above-described partitioning of CU and DU processing functions by protocol layers is only an example, and may be partitioned in other ways. For example, a CU or a DU may be divided into functions having more protocol layers, or a CU or a DU may be divided into partial processing functions having protocol layers. For example, a part of functions of the RLC layer and functions of protocol layers above the RLC layer are set at CU, and the remaining functions of the RLC layer and functions of protocol layers below the RLC layer are set at DU. For another example, the functions of the CU or the DU may be divided according to the service type or other system requirements, for example, the functions that require processing time to meet the smaller latency requirement may be set in the DU, and the functions that do not require processing time to meet the latency requirement may be set in the CU.

The CUs may be connected to a core network. Alternatively, the CU may have part of the functionality of the core network.

Further, part of the functions of the DU may be separately set. As shown in fig. 2, this portion of the functionality may be implemented by a Radio Unit (RU). The RU may have radio frequency functions. The name of RU is not limited in this application. The DUs and RUs may be split or separated at the PHY layer. For example, a DU may implement higher layer functions in the PHY layer, and an RU may implement lower layer functions in the PHY layer or implement the lower layer functions and radio frequency functions. Higher layer functions in the PHY layer include functions closer to the MAC layer, and lower layer functions in the PHY layer include functions closer to the radio frequency. For example, the higher layer functions of the PHY layer include one or more of the following: feedforward error correction (forward error correction, FEC) encoding/decoding, scrambling, or modulation/demodulation. The low-level functions of the PHY layer include one or more of the following: fast fourier transform (fast Fourier transform, FFT)/inverse fast fourier transform (inverse fast Fourier transformation, IFFT), beamforming, or extraction and filtering of physical random access channels (physical random access channel, PRACH), etc. The RU may communicate radio frequency signals with the terminal devices over an air interface. The precoding function of the PHY layer code may be located in the DU or in the RU. The manner of splitting between DU and RU may be in various possible ways, without limitation. There is an interface between the DU and the RU. For example, depending on the manner of splitting, the interface between the DU and RU may be a common public radio interface (common public radio interface, CPRI) interface, or an enhanced common radio interface (enhanced common public radio interface, eCPRI) interface.

The network may send instructions to the UE to decrease network priority based on congestion and overload considerations. The UE reduces the current RAT priority according to the instruction to reduce the network priority. For example, the UE drops back from the 5G network to the 4G network according to an instruction to decrease the network priority. Thus, the UE may not be able to return to the 5G network for a period of time, thereby degrading the user experience.

For this purpose, the present application provides a method for negotiating network priorities. The negotiation method of the network priority can be applied to the access network equipment, the access network device or the processing chip. The following describes a network priority negotiation method by taking an example that the network priority negotiation method is applied to access network equipment. Fig. 3 is a first flowchart of a method for negotiating network priority according to an embodiment of the present application. As shown in fig. 3, the negotiation method of the network priority includes the following steps.

In step 301, a first terminal device sends a first message to an access network device, comprising a class identification of the first terminal device.

The first terminal device may send the first message to the access network device without establishing a communication link with the access network device. For example, the first terminal device sends a first message to the access network device over the common channel. The first message may be a registration request message. The first terminal device may also send a first message to the access network device after establishing the communication link with the access network device. The first message includes a category identification of the first terminal device. The class identification of the first terminal device indicates that the first terminal device belongs to the first class. In practical applications, there is also a second category of terminal equipment. For example, a first category of terminal devices refers to terminal devices that do not include a display screen, and a second category of terminal devices refers to terminal devices that include a display screen. As another example, the second class of terminal devices refers to terminal devices sensitive to 5G networks, such as cell phones or tablet computers. The first class of terminal devices refers to terminal devices that are insensitive to 5G networks, such as watches or internet of things (internet of things, ioT) devices. As another example, a first class of terminal devices refers to a processor having a processing power greater than or equal to a threshold, and a second class of terminal devices refers to a processor having a processing power less than the threshold. The processing power of a processor may refer to the size of data processed by the processor over a period of time or other measure of the capability of the processor.

It will be appreciated that in practical applications there may be more classes of terminal devices. For example, a third class of terminal devices refers to terminal devices that are between the first class and the second class. In one example, the first terminal device refers to a terminal device that does not include a display screen, the third category of terminal devices refers to a terminal device that includes a black and white display screen, and the second category of terminal devices refers to a terminal device that includes a color display screen. In another example, the first class of terminal devices refers to a processor having a processing power greater than or equal to a first threshold, the third class of terminal devices refers to a processor having a processing power less than the first threshold, and greater than or equal to a second threshold, and the second class of terminal devices refers to a processor having a processing power less than the second threshold.

In step 302, the access network device generates a second message according to the class identification of the first terminal device, where the second message includes an instruction to decrease the network priority.

After the first terminal device and the access network device establish a communication link, the access network device may need to reduce radio access technology (radio access technology, RAT) priority of portions of the terminal devices based on congestion and overload considerations. At this time, the access network device determines whether to reduce the RAT priority of the first terminal device according to the class identifier of the first terminal device. If the access network equipment determines to reduce the RAT priority of the first terminal equipment, the access network equipment generates a second message. The second message includes instructions to decrease network priority. The destination address of the second message is the MAC address of the first terminal device. If the access network device determines that the RAT priority of the first terminal device is not reduced, the access network device may not need to generate the second message or carry an instruction for reducing the network priority in the second message.

In step 303, the access network device sends a second message to the first terminal device.

In step 304, the first terminal device decreases the priority of the first network according to the second message.

The first terminal device and the access network device establish a communication link of the first network. For example, the first terminal device and the access network device establish a communication link of the 5G network. After receiving the second message, the first terminal device reduces the priority of the first network according to the second message. For example, the first terminal device sets the configured NR frequency points or all NR frequency points as low priority frequency points according to the second message. The first terminal device may fall back to the second network by lowering the priority of the first network. For example, after the priority of the first network is lowered, the priority of the second network is higher than the priority of the first network. The first terminal device searches for a frequency point consistent with the frequency point of the second network. After sweep frequency and pilot frequency processing, the first terminal equipment establishes a synchronous channel with a target cell corresponding to a frequency point of the second network. After the synchronization channel is established, the first terminal device acquires the network identifier and the system identifier of the target cell, and determines whether the target cell needs to reside according to the network identifier and the system identifier. If the first terminal equipment needs to reside in the target cell, the first terminal equipment establishes a common channel with the target cell. The first terminal equipment obtains the related information of the target cell through the public channel, and is connected to the target cell according to the related information of the target cell. The transmission rate of the first network is higher than the transmission rate of the second network. For example, the first network is a 5G network and the second network is a 4G network. As another example, the first network is a 6G network and the second network is a 5G network or a 4G network.

It should be appreciated that in practical applications, the access network device may integrate functionality for accessing the second network and the first network. For example, the access network device has both eNodeB and gNB structures for providing access functions for 4G networks and 5G networks. At this time, the first terminal device may be connected to the same access network device before and after falling back from the first network to the second network. Access functions for different networks may also be provided in the communication system by different access network devices. For example, a first access network device is used to provide access functionality for a 5G network and a second access network device is used to provide access functionality for a 4G network. At this time, the first terminal device and the first access network device establish a communication link of the 5G network before falling back from the first network to the second network. After falling back from the first network to the second network, the first terminal device and the second access network device establish a communication link of the 4G network.

Fig. 4 is a second flowchart of a method for negotiating network priority according to an embodiment of the present application. As shown in fig. 4, the negotiation method of the network priority includes the following steps.

In step 401, the first terminal device sends a first message to the access network device, including a class identification of the first terminal device.

The description of step 401 is similar to that of step 301 of fig. 3 described above. Thus, the description of step 401 can refer to the description of step 301 previously described.

In step 402, the second terminal device sends a third message to the access network device, including the category identification of the first terminal device.

The second terminal device may send a third message to the access network device without establishing a communication link with the access network device. For example, the second terminal device sends a third message to the access network device over the common channel. The second terminal device may also send a third message to the access network device after establishing the communication link with the access network device. The third message comprises a category identification of the second terminal device. The class identification of the second terminal device indicates that the second terminal device belongs to the second class. For a description of the first category and the second category, reference may be made to the description of step 301 in fig. 3, previously described.

In step 403, the access network device generates a second message according to the class identifications of the two terminal devices, the second message comprising an instruction to decrease the network priority.

After the first terminal device and the access network device, the second terminal device and the access network device establish a communication link, the access network device may need to reduce the RAT priority of a portion of the terminal devices based on congestion and overload considerations. At this time, the access network device determines whether to reduce the RAT priority of the first terminal device according to the category identifiers of the plurality of terminal devices. The plurality of terminal devices includes a first terminal device and a second terminal device. For example, the access network device reduces the RAT priority of the terminal device of the first class. The access network device does not decrease the RAT priority of the terminal device of the second class. If the access network equipment determines to reduce the RAT priority of the first terminal equipment, the access network equipment generates a second message. The second message includes instructions to decrease network priority. The destination address of the second message is the MAC address of the first terminal device.

It should be appreciated that in practical applications, the access network device may also need to determine whether to reduce the RAT priority of the terminal device by other information and the class identification of the terminal device. For example, the other information is the target number of access network devices that need to decrease RAT priority. When the number of terminal devices of the first category connected by the access network device is greater than the target number, the access network device may only decrease the RAT priority of the target number of terminal devices in the terminal devices of the first category. As another example, the other information is priority information of the service being transmitted by the terminal device.

In step 404, the access network device sends a second message to the first terminal device.

In step 405, the first terminal device reduces the priority of the first network according to the second message.

The description of step 405 is similar to that of step 303 of fig. 3, described above. Thus, reference can be made to the description of step 303 above for a description of step 405.

In the example of fig. 4, the second terminal device would send the category identification of the second terminal device to the access network device. After the second terminal device sends the class identifier to the access network device, the access network device may still send a command for lowering the priority to the second terminal device, for example, the target number of lowering the priority needs to be larger than the number of terminal devices in the first class. After receiving the instruction for lowering the priority, the second terminal device can determine whether to execute the instruction for lowering the priority, namely, determine whether to set the configured NR frequency points or all the NR frequency points as low-priority frequency points according to the state of the second terminal device and the required scene. For example, if the second terminal device is a terminal sensitive to power consumption and having a terminal interface that is not perceived as strong, such as a wristwatch or a part of IOT terminals, the second terminal device performs the operation of lowering priority according to the network configuration. If the second terminal device is a terminal with low sensitivity to power consumption and a user interface perceives stronger, such as a strong-performance mobile phone, the second terminal device may not immediately execute the action of lowering the priority, but continue to reside on the NR to perform reselection evaluation according to the normal priority.

Fig. 5 is a third flowchart of a method for negotiating network priority according to an embodiment of the present application. As shown in fig. 5, the negotiation method of the network priority includes the following steps.

In step 501, a first terminal device sends a first message to an access network device, including a class identification of the first terminal device.

The description of step 501 is similar to that of step 301 of fig. 3 described above. Thus, the description of step 501 can refer to the description of step 301 previously described.

In step 502, the access network device generates a second message according to the class identifier of the first terminal device, where the second message includes an instruction to reduce the network priority and information of the first area range.

After the first terminal device and the access network device establish a communication link, the access network device may need to reduce RAT priority of a portion of the terminal devices based on congestion and overload considerations. At this time, the access network device determines whether to reduce the RAT priority of the first terminal device according to the class identifier of the first terminal device. If the access network equipment determines to reduce the RAT priority of the first terminal equipment, the access network equipment generates a second message. The second message includes instructions to decrease network priority and information of the first area coverage. The destination address of the second message is the MAC address of the first terminal device. The information of the first area range may be a tracking area identification (tracking area identity, TAI) or Physical Cell Identification (PCI), etc. The second message may be an RRC release message. Fig. 6 is a schematic structural diagram of an RRC release message provided in an embodiment of the present application. As shown in fig. 6, the instruction to decrease the network priority may be located in an element "reprioritization req" of the RRC release message. The RRC release message in fig. 6 includes 4 first-level information elements. The 4 first level information elements are "redirect writecarrier info", "cellReselection carriers", "sustendConfig" and "reprioritization req", respectively. In the example of fig. 6, the information of the first area range is TAI. The information of the first area range is located in "TAI List" of the element "reprioritization req". "TAI List" is the next level information element in "reprioritization req". Thus, "TAI List" belongs to the second level information element of the RRC release message. "TAI List" may carry one or more TAIs. As can be seen from the foregoing description of fig. 3, the first message may be a registration request message. When the first message is a registration request message, the class identification of the first terminal device can be located in a first level information element of the registration request message.

It should be appreciated that the description of step 502 is similar to that described above for step 302 in FIG. 3 and step 403 in FIG. 4. Thus, reference can be made to the description of step 302 in FIG. 3 and step 403 in FIG. 4, previously described, for a description of step 504.

In step 503, the access network device sends a second message to the first terminal device.

In step 504, the first terminal device reduces the priority of the first network according to the second message when within the first area.

When the first terminal device is within the first area, the first terminal device reduces the priority of the first network according to the second message. For example, the first terminal device obtains the TAI List in the second message. When the first terminal device is within the TAI range in the TAI List, the first terminal device reduces the priority of the first network according to the instruction for reducing the priority of the network, and falls back from the first network to the second network. When the first terminal device is not within the first area, the first terminal device does not fall back from the first network to the second network according to the second message. For example, when the first terminal device is not within the first area, the first terminal device does not lower the priority of the first network according to the instruction to lower the priority of the network. At this time, the priority of the first network is still higher than the priority of the second network. The first terminal device does not need to fall back from the first network to the second network. It should be appreciated that the description of step 504 is similar to that of step 303 of fig. 3, described above. Thus, reference can be made to the description of step 303 above for a description of step 504.

Fig. 7 is a schematic structural diagram of an access network device according to an embodiment of the present application. As shown in fig. 7, the access network device 700 includes a receiving unit 701, a processing unit 702, and a transmitting unit 703. The receiving unit 701 is configured to receive a first message from a first terminal device. The first message includes a category identification of the first terminal device. The processing unit 702 is configured to generate the second message according to the category identification of the first terminal device. The sending unit 703 is configured to send a second message to the first terminal device according to the class identifier of the first terminal device. The second message includes instructions to decrease network priority. The instructions to decrease the priority of the network are for instructing the first terminal device to decrease the priority of the first network.

It should be appreciated that there are similarities to the description of the access network device 700 and the description of the method of negotiating network priorities in any of the preceding figures 3 to 5. Thus, the description of the access network device 700 can refer to the description of the negotiation method of network priority in any of the foregoing figures 3-5. The description of the access network device 700 can refer to the description of the access network device in any of the foregoing figures 3 to 5. For example, the first category of terminal devices does not include a display screen and the second category of terminal devices includes a display screen. As another example, the first message is a registration request message. As another example, the second message also includes information indicating the extent of the first region.

Fig. 8 is a schematic structural diagram of a first terminal device according to an embodiment of the present application. As shown in fig. 8, the first terminal device 800 includes a transmission unit 801, a reception unit 802, and a processing unit 803. The sending unit 801 is configured to send a first message to an access network device. The first message comprises a category identification of said first terminal device. The receiving unit 802 is configured to receive a second message from the access network device via the first network. The second message includes instructions to decrease network priority. The instruction for lowering the network priority is obtained according to the category identification of the first terminal device. If the first condition is met, the processing unit 803 is configured to decrease the priority of the first network. The first condition includes: the first terminal device receives an instruction for reducing the network priority.

It should be appreciated that there are similarities in the description of the first terminal device 800 and the description of the method of negotiating network priorities in any of the preceding figures 3 to 5. Therefore, the description of the first terminal device 800 can refer to the description of the negotiation method of the network priority in any of the foregoing fig. 3 to 5. The description of the first terminal device 800 can refer to the description of the first terminal device in any of the foregoing fig. 3 to 5. For example, the first category of terminal devices does not include a display screen and the second category of terminal devices includes a display screen. As another example, the first message is a registration request message. As another example, the second message also includes information indicating the extent of the first region.

Fig. 9 is a schematic structural diagram of a communication device according to an embodiment of the present application. The communication means may in particular be a terminal device or an access network device as in the examples above. As shown in fig. 9, the communication device includes at least one processor 902 and at least one network interface 905.

Further optionally, the communication device further comprises at least one memory 903, at least one transceiver 904 and one or more antennas 901. The processor 902, memory 903, transceiver 904, and network interface 905 are connected, for example, by a bus, which in this application may include various interfaces, transmission lines, buses, or the like, as not limited in this application. The antenna 901 is connected to a transceiver 904. The network interface 905 is used to enable the communication device to communicate with other communication apparatuses through a communication link. For example, the network interface 905 may comprise a network interface between the communication device and the core network apparatus, such as an S1 interface, and the network interface may comprise a network interface between the communication device and other communication devices (such as other network apparatuses or core network apparatuses), such as an X2 or Xn interface.

The processor 902 may be one or more field-programmable gate arrays (FPGAs), application-specific integrated chips (application specific integrated circuit, ASICs), system-on-chips (socs), central processing units (central processor unit, CPUs), network processors (network processor, NPs), digital signal processing circuits (digital signal processor, DSPs), microcontrollers (micro controller unit, MCUs), programmable controllers (programmable logic device, PLDs) or other integrated chips, or any combination of the above chips or processors, or the like.

The processor 902 is mainly configured to process the communication protocol and the communication data, and control the entire communication device, execute a software program, and process the data of the software program, for example, to support the communication device to perform the actions described in the foregoing implementation procedure. The communication device may include a baseband processor, which is mainly used for processing the communication protocol and the communication data, and a central processor, which is mainly used for controlling the whole terminal device, executing the software program, and processing the data of the software program. The processor 902 in fig. 9 may integrate the functions of a baseband processor and a central processor, and those skilled in the art will appreciate that the baseband processor and the central processor may also be separate processors, interconnected by bus technology, etc. Those skilled in the art will appreciate that the network device may include multiple baseband processors to accommodate different network formats, and that the network device may include multiple central processors to enhance its processing capabilities, and that the various components of the network device may be connected by various buses. The baseband processor may also be referred to as a baseband processing circuit or baseband processing chip. The central processing unit may also be expressed as a central processing circuit or a central processing chip. The function of processing the communication protocol and the communication data may be built in the processor, or may be stored in a memory in the form of a software program, which is executed by the processor to realize the baseband processing function.

The memory is mainly used for storing software programs and data. The memory 903 may be separate and coupled to the processor 902. Alternatively, the memory 903 may be integrated with the processor 902, e.g., integrated within a chip. The memory 903 can store program codes for executing the technical solutions of the present application, and the processor 902 controls the execution of the program codes, and various executed computer program codes can be regarded as a driver of the processor 902.

Fig. 9 shows only one memory and one processor. In an actual network device, there may be multiple processors and multiple memories. The memory may also be referred to as a storage medium or storage device, etc. The memory may be a memory element on the same chip as the processor, i.e., an on-chip memory element, or a separate memory element, as not limited in this application.

A transceiver 904 may be used to support the reception or transmission of radio frequency signals between the communication device and the terminal, and the transceiver 904 may be connected to an antenna 901. The transceiver 904 includes a transmitter Tx and a receiver Rx. Specifically, one or more antennas 901 may receive a radio frequency signal, and a receiver Rx of the transceiver 904 is configured to receive the radio frequency signal from the antenna, convert the radio frequency signal into a digital baseband signal or a digital intermediate frequency signal, and provide the digital baseband signal or the digital intermediate frequency signal to the processor 902, so that the processor 902 performs further processing, such as demodulation processing and decoding processing, on the digital baseband signal or the digital intermediate frequency signal. The transmitter Tx in the transceiver 904 is also operative to receive and convert modulated digital baseband signals or digital intermediate frequency signals from the processor 902 to radio frequency signals and transmit the radio frequency signals via the one or more antennas 901. In particular, the receiver Rx may selectively perform one or more steps of down-mixing and analog-to-digital conversion on the radio frequency signal to obtain a digital baseband signal or a digital intermediate frequency signal, where the order of the down-mixing and analog-to-digital conversion is adjustable. The transmitter Tx may selectively perform one or more stages of up-mixing processing and digital-to-analog conversion processing on the modulated digital baseband signal or the digital intermediate frequency signal to obtain a radio frequency signal, and the sequence of the up-mixing processing and the digital-to-analog conversion processing may be adjustable. The digital baseband signal and the digital intermediate frequency signal may be collectively referred to as a digital signal.

The transceiver 904 may also be referred to as a transceiver module, transceiver device, etc. Alternatively, the device for implementing the receiving function in the transceiver module may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver module may be regarded as a transmitting unit, that is, the transceiver module includes a receiving unit and a transmitting unit, where the receiving unit may also be referred to as a receiver, an input port, a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, or a transmitting circuit, etc.

It should be noted that, the communication apparatus shown in fig. 9 may be specifically used to implement steps implemented by the terminal device, the first access network device, or the second access network device in the foregoing method, and implement technical effects corresponding to the terminal device, the first access network device, or the second access network device, and the specific implementation manner of the communication apparatus shown in fig. 9 may refer to descriptions in the foregoing method, which are not repeated herein.

Fig. 10 is a schematic structural diagram of a communication system provided in the present application. As shown in fig. 10, the communication system 1000 includes an access network device 1001 and a first terminal device 1002. The first terminal device 1002 can be the first terminal device 800 in fig. 8 or the communication apparatus in fig. 10. The access network device 1001 can be the access network device 700 in fig. 7 or the communication apparatus in fig. 10.

The division of the modules in the present application is illustrative, and is merely a logic function division, and there may be another division manner in actual implementation. In addition, each functional module in the present application may be integrated into one processor, or may exist alone physically, or two or more modules may be integrated into one module. The integrated modules may be implemented in hardware or in software functional modules.

The technical solution provided in the present application may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, a network device, a terminal device, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital video disc (digital video disc, DVD)), or a semiconductor medium, etc.

In this application, where there is no logical conflict, examples may be referred to each other, for example, methods and/or terms between method examples may be referred to each other, for example, functions and/or terms between apparatus examples and method examples may be referred to each other.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims

1. A method for negotiating network priorities, comprising:

receiving a first message from a first terminal device, the first message comprising a category identification of the first terminal device;

generating a second message according to the category identification of the first terminal equipment;

and sending a second message to the first terminal equipment through the first network, wherein the second message comprises an instruction for reducing the network priority, and the instruction for reducing the network priority is used for instructing the first terminal equipment to reduce the priority of the first network.

2. The network priority negotiation method according to claim 1, wherein the class identification of the first terminal device indicates that the first terminal device belongs to a first class, the terminal device of the first class not comprising a display screen, and the terminal device of the second class comprising a display screen.

3. The negotiation method according to claim 1 or 2, wherein the first message is a registration request message.

4. A network priority negotiation method according to claim 3, wherein the class identification of the first terminal device is located in a first level information element in the registration request message.

5. The network priority negotiation method according to claim 1 or 2, wherein the second message further comprises information indicating a first area coverage;

the instruction for reducing the priority of the network is used for instructing the first terminal device to reduce the priority of the first network, and comprises the following steps: the instruction for reducing the priority of the network and the information of the first area range are used for indicating that the priority of the first network is reduced when the first terminal equipment is in the first area range;

the information of the first area range is further used for indicating that the priority of the first network is not reduced according to the instruction for reducing the priority of the network when the first terminal equipment is out of the first area range.

6. The network priority negotiation method according to claim 5, wherein the information of the first zone range is tracking area identity TAI.

7. The method of negotiating network priorities according to claim 1 or 2, characterized in that said second message is a radio resource control, RRC, release message.

8. A method for negotiating network priorities, comprising:

the method comprises the steps that a first terminal device sends a first message to an access network device, wherein the first message comprises a category identifier of the first terminal device;

the first terminal equipment receives a second message from the access network equipment through a first network, wherein the second message comprises an instruction for reducing network priority, and the instruction for reducing the network priority is obtained according to the category identification of the first terminal equipment;

if the first condition is met, the first terminal device reducing the priority of the first network includes: and the first terminal equipment receives the instruction for reducing the network priority.

9. The network priority negotiation method according to claim 8, wherein the class identification of the first terminal device indicates that the first terminal device belongs to a first class, the terminal device of the first class not comprising a display screen, and the terminal device of the second class comprising a display screen.

10. The network priority negotiation method according to claim 8 or 9, wherein the first message is a registration request message.

11. The network priority negotiation method according to claim 10, wherein the class identification of the first terminal device is located in a first level information element in the registration request message.

12. The network priority negotiation method of claim 8 or 9, wherein the second message further comprises information indicating a first zone range, the method further comprising:

the first terminal equipment does not reduce the priority of the first network when the first terminal equipment is out of the first area range according to the information of the first area range;

the first condition further includes: the first terminal device is in the first area range.

13. The network priority negotiation method of claim 12, wherein the first zone range information is tracking area identification TAI.

14. The negotiation method according to claim 8 or 9, wherein the second message is a radio resource control, RRC, release message.

15. The method of negotiating network priorities according to claim 8 or 9, characterized in that said first condition further comprises:

The first terminal equipment is not connected with a power supply; or alternatively, the first and second heat exchangers may be,

the electric quantity of the first terminal equipment is smaller than a threshold value; or alternatively, the first and second heat exchangers may be,

the first terminal device is in a power saving mode.

16. An access network device, comprising a receiving unit, a processing unit, and a sending unit, wherein:

the receiving unit is used for receiving a first message from a first terminal device, wherein the first message comprises a category identifier of the first terminal device;

the processing unit is used for generating a second message according to the category identification of the first terminal equipment;

the sending unit is configured to send a second message to the first terminal device through a first network, where the second message includes an instruction for reducing a network priority, and the instruction for reducing the network priority is configured to instruct the first terminal device to reduce the priority of the first network.

17. A first terminal device, comprising a receiving unit, a transmitting unit and a processing unit, wherein:

the sending unit is used for sending a first message to access network equipment, wherein the first message comprises a category identifier of the first terminal equipment;

the receiving unit is configured to receive, through a first network, a second message from the access network device, where the second message includes an instruction for reducing a network priority, where the instruction for reducing the network priority is obtained according to a class identifier of the first terminal device;

The processing unit is configured to reduce the priority of the first network if a first condition is satisfied, where the first condition includes: and the first terminal equipment receives the instruction for reducing the network priority.

18. An access network device comprising a transceiver and a processor, wherein:

the transceiver is configured to receive a first message from a first terminal device, where the first message includes a category identification of the first terminal device;

the processor is used for generating a second message according to the category identification of the first terminal equipment;

the transceiver is further configured to send a second message to the first terminal device over the first network, the second message including an instruction to decrease the network priority, the instruction to decrease the network priority being configured to instruct the first terminal device to decrease the priority of the first network.

19. A first terminal device comprising a transceiver and a processor, wherein:

the transceiver is configured to send a first message to an access network device, where the first message includes a class identifier of the first terminal device;

the transceiver is further configured to receive a second message from the access network device through the first network, where the second message includes an instruction to decrease the network priority, where the instruction to decrease the network priority is obtained according to a class identifier of the first terminal device;

The processor is configured to reduce the priority of the first network if a first condition is satisfied, where the first condition includes: and the first terminal equipment receives the instruction for reducing the network priority.