Bearer establishment method and device, terminal, network equipment and readable storage medium

Abstract

The invention discloses a bearer establishment method and device, a terminal, network equipment and a readable storage medium, and belongs to the technical field of communication, and the bearer establishment method comprises the steps that first network equipment receives a first message from second network equipment, and the first message is used for establishing a bearer used for transmitting service data of a first service; the first network device sends first configuration information to the terminal according to the first message, the first configuration information being used for at least one of the following items: releasing a first DRB between the terminal and the first network device, and establishing a second DRB between the terminal and the first network device; modifying a configuration parameter corresponding to a first DRB between the terminal and the first network device; wherein the first DRB is used for transmitting service data of a second service, the second DRB is used for transmitting service data of a first service, and the first DRB after the configuration parameters are modified can be used for transmitting the service data of the first service.

Description

Technical Field

[0001] The present application belongs to the field of communication technology, and specifically relates to a bearer establishment method, apparatus, terminal, network equipment and readable storage medium. Background Art

[0002] At present, when a terminal conducts communication services with other devices, the terminal can first establish a connection channel for transmitting the service data of the communication service. The connection channel includes a data radio bearer (DRB) between the terminal and the access network device, and a bearer between the access network device and the core network. The service data of the communication service is then transmitted to the other device through the DRB and the bearer to communicate with the other device.

[0003] However, since the number of DRBs that can be established between the terminal and the access network device is limited, the number of DRBs that have been established between the terminal and the access network device may reach the upper limit, resulting in the terminal being unable to establish a certain DRB mentioned above, which may cause the terminal to be unable to communicate with other devices; or, since the resources between the access network device and the core network are limited, the rate of business data transmitted through the above-mentioned bearer with other devices may be low due to insufficient resources, which may cause the terminal to communicate with other devices in a low efficiency. In this way, the quality of communication between the terminal and other devices is poor. Summary of the invention

[0004] The embodiments of the present application provide a bearer establishment method, apparatus, terminal, network device and readable storage medium, which can solve the problem of poor quality of communication between the terminal and other devices.

[0005] In a first aspect, a bearer establishment method is provided, which is executed by a first network device, and the method includes: the first network device receives a first message from a second network device, and the first message is used to establish a bearer for transmitting business data of a first business; the first network device sends first configuration information to a terminal according to the first message, and the first configuration information is used for at least one of the following: releasing a first DRB between the terminal and the first network device, and establishing a second DRB between the terminal and the first network device; modifying configuration parameters corresponding to the first DRB between the terminal and the first network device; wherein the above-mentioned first DRB is used to transmit the business data of the second business, and the above-mentioned second DRB is used to transmit the business data of the first business, and the first DRB after the configuration parameters are modified can be used to transmit the business data of the first business.

[0006] In a second aspect, a bearer establishment method is provided, which is executed by a second network device, and the method includes: the second network device sends a first message to the first network device, and the first message is used to establish a bearer for transmitting business data of a first business; the second network device sends an eighth message to the third network device, or the second network device sends a ninth message to the fourth network device; wherein the eighth message is used for any one of the following: releasing resources corresponding to the first connection channel; deleting the first connection channel; the first connection channel is used to transmit business data of the second business; the ninth message is used to indicate that the first connection channel cannot transmit business data of the second business, and the first connection channel is used to transmit business data of the second business.

[0007] According to a third aspect, a bearer establishment method is provided, which is executed by a terminal, and the method includes: the terminal receives first configuration information from a first network device; the terminal executes at least one of the following according to the first configuration information: releases the first DRB between the terminal and the first network device, and establishes a second DRB between the terminal and the first network device; modifies the configuration parameters corresponding to the first DRB between the terminal and the first network device; wherein the first DRB is used to transmit the service data of the second service, the second DRB is used to transmit the service data of the first service, and the first DRB after the configuration parameters are modified can be used to transmit the service data of the first service.

[0008] In a fourth aspect, a bearer establishment device is provided, which is a first bearer establishment device, and the first bearer establishment device includes: a receiving module and a sending module. The receiving module is used to receive a first message from a second bearer establishment device, and the first message is used to establish a bearer for transmitting business data of a first business. The sending module is used to send first configuration information to a fourth bearer establishment device according to the first message received by the receiving module, and the first configuration information is used for at least one of the following: releasing the first DRB between the first bearer establishment device and the fourth bearer establishment device, and establishing a second DRB between the first bearer establishment device and the fourth bearer establishment device; modifying the configuration parameters corresponding to the first DRB between the first bearer establishment device and the fourth bearer establishment device; wherein the above-mentioned first DRB is used to transmit the business data of the second business, and the above-mentioned second DRB is used to transmit the business data of the first business, and the first DRB after the configuration parameters are modified can be used to transmit the business data of the first business.

[0009] In a fifth aspect, a bearer establishment device is provided, which is a second bearer establishment device, and the second bearer establishment device includes: a sending module. The sending module is used to send a first message to the first bearer establishment device, and the first message is used to establish a bearer for transmitting business data of the first business; and send an eighth message to the third bearer establishment device, or send a ninth message to the fifth bearer establishment device; wherein the eighth message is used for any of the following: releasing resources corresponding to the first connection channel; deleting the first connection channel; the first connection channel is used to transmit business data of the second business; the ninth message is used to indicate that the first connection channel cannot transmit business data of the second business, and the first connection channel is used to transmit business data of the second business.

[0010] In a sixth aspect, a bearer establishment device is provided, which is a fourth bearer establishment device, and the fourth bearer establishment device includes: a receiving module and an execution module. The receiving module is used to receive first configuration information from the first bearer establishment device. The execution module is used to execute at least one of the following according to the first configuration information received by the receiving module: releasing the first DRB between the first bearer establishment device and the fourth bearer establishment device, and establishing a second DRB between the first bearer establishment device and the fourth bearer establishment device; modifying the configuration parameters corresponding to the first DRB between the first bearer establishment device and the fourth bearer establishment device; wherein the above-mentioned first DRB is used to transmit the service data of the second service, the above-mentioned second DRB is used to transmit the service data of the first service, and the first DRB after the configuration parameters are modified can be used to transmit the service data of the first service.

[0011] In the seventh aspect, a network device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0012] In an eighth aspect, a network device is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive a first message from a second network device, the first message being used to establish a bearer for transmitting business data of a first business; and according to the first message, send first configuration information to a terminal, the first configuration information being used for at least one of the following: releasing a first DRB between the terminal and the first network device, and establishing a second DRB between the terminal and the first network device; modifying configuration parameters corresponding to the first DRB between the terminal and the first network device; wherein the above-mentioned first DRB is used to transmit business data of the second business, the above-mentioned second DRB is used to transmit business data of the first business, and the first DRB after modifying the configuration parameters can be used to transmit business data of the first business; or the communication interface is used to send a first message to the first network device, the first message being used to establish a bearer for transmitting business data of the first business; and send an eighth message to a third network device, or send a ninth message to a fourth network device; wherein the above-mentioned eighth message is used for any one of the following: releasing resources corresponding to a first connection channel; deleting a first connection channel; the first connection channel being used to transmit business data of a second business; the ninth message being used to indicate that the first connection channel cannot transmit business data of the second business, and the first connection channel is used to transmit business data of the second business.

[0013] In a ninth aspect, a terminal is provided, comprising a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the third aspect are implemented.

[0014] In the tenth aspect, a terminal is provided, comprising a processor and a communication interface, wherein the communication interface is used to receive first configuration information from a first network device; the processor is used to execute at least one of the following according to the first configuration information: releasing a first DRB between the terminal and the first network device, and establishing a second DRB between the terminal and the first network device; modifying configuration parameters corresponding to the first DRB between the terminal and the first network device; wherein the first DRB is used to transmit business data of a second business, the second DRB is used to transmit business data of a first business, and the first DRB after modifying the configuration parameters can be used to transmit business data of the first business.

[0015] In the eleventh aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented, or the steps of the method described in the third aspect are implemented.

[0016] In the twelfth aspect, a wireless communication system is provided, including: a terminal and a network device, wherein the terminal can be used to execute the steps of the method described in the third aspect; the network device can be used to execute the steps of the method described in the first aspect, or execute the steps of the method described in the second aspect.

[0017] In the thirteenth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instructions to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0018] In the fourteenth aspect, a computer program / program product is provided, wherein the computer program / program product is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect.

[0019] In an embodiment of the present application, when the second network device instructs the first network device to establish a bearer for transmitting the service data of the first service, the first network device can send the first configuration information to the terminal so that the terminal can release the first DRB established between the terminal and the first network device and establish a second DRB, that is, the terminal can first reduce the number of DRBs established between the terminal and the first network device, and then establish the second DRB, that is, the terminal can establish the second DRB while ensuring that the number of DRBs established between the terminal and the first network device has not reached the upper limit, instead of directly establishing a new DRB for transmitting the service data of the first service. Therefore, it can be avoided that the terminal is unable to establish the second DRB because the number of DRBs established between the terminal and the first network device has reached the upper limit. B; and / or, because the terminal can modify the configuration parameters corresponding to the first DRB established between the terminal and the first network device after receiving the first configuration information, so as to obtain the DRB for transmitting the business data of the first business, that is, the terminal can modify the DRB for transmitting the business data of the first business without increasing the number of DRBs established between the terminal and the first network device, instead of directly establishing a new DRB for transmitting the business data of the first business. Therefore, it can avoid the situation where the terminal cannot establish the second DRB because the number of DRBs established between the terminal and the first network device reaches the upper limit, thereby reducing the probability of the terminal being unable to communicate with other devices. In this way, the quality of communication between the terminal and other devices can be improved.

[0020] In an embodiment of the present application, since the second network device instructs the first network device to establish a bearer for transmitting business data of the first business, it may cause the first connection channel to be unable to transmit business data of the second business. At this time, the second network device can notify the third network device to release the resources corresponding to the first connection channel or delete the first connection channel to avoid other network devices using resources to transmit information through the first connection channel. Therefore, the resources occupied by transmitting information through the first connection channel can be saved to reduce the probability of a low rate of transmitting business data of the first business with other devices due to insufficient resources; or, the second network device can notify the fourth network device that the first connection channel cannot transmit business data of the second business. Therefore, the fourth network device may not use resources to transmit information through the first connection channel. Therefore, the resources occupied by transmitting information through the first connection channel can be saved to reduce the probability of a low rate of transmitting business data of the first business with other devices due to insufficient resources; thereby, the efficiency of the terminal performing the first business with other devices can be improved, and thus, the quality of communication between the terminal and other devices can be improved.

[0021] In an embodiment of the present application, since the terminal can release the first DRB established between the terminal and the first network device and establish a second DRB when receiving the first configuration information, that is, the terminal can first reduce the number of DRBs established between the terminal and the first network device, and then establish the second DRB, that is, the terminal can establish the second DRB while ensuring that the number of DRBs established between the terminal and the first network device has not reached the upper limit, instead of directly establishing a new DRB for transmitting the business data of the first business. Therefore, it can avoid the situation where the terminal cannot establish the second DRB because the number of DRBs established between the terminal and the first network device has reached the upper limit; and / or, since the terminal receives the first configuration information In the case of information, the configuration parameters corresponding to the first DRB established between the terminal and the first network device can be modified to obtain a DRB for transmitting the business data of the first business. That is, the terminal can modify the DRB for transmitting the business data of the first business without increasing the number of DRBs established between the terminal and the first network device, instead of directly establishing a new DRB for transmitting the business data of the first business. Therefore, it can avoid the situation where the terminal cannot establish a second DRB because the number of DRBs established between the terminal and the first network device reaches the upper limit; thereby, the probability of the terminal being unable to communicate with other devices can be reduced. In this way, the quality of communication between the terminal and other devices can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of a terminal initiating a voice call to another device in the related art;

[0023] Figure 2 It is a schematic diagram of components of EPS bearer in the related art;

[0024] Figure 3 is a block diagram of a wireless communication system provided by an embodiment of the present application;

[0025] Figure 4 This is one of the flowcharts of the bearer establishment method provided in the embodiment of the present application;

[0026] Figure 5 This is the second flow chart of the bearer establishment method provided in the embodiment of the present application;

[0027] Figure 6 This is the third flowchart of the bearer establishment method provided in the embodiment of the present application;

[0028] Figure 7 This is a fourth flowchart of the bearer establishment method provided in an embodiment of the present application;

[0029] Figure 8 This is the fifth flow chart of the bearer establishment method provided in the embodiment of the present application;

[0030] Fig. 9 This is the sixth flowchart of the bearer establishment method provided in the embodiment of the present application;

[0031] Fig.10 This is the seventh flowchart of the bearer establishment method provided in the embodiment of the present application;

[0032] Fig.11 This is one of the flow diagrams of a terminal initiating a voice call to another device in the bearer establishment method provided in an embodiment of the present application;

[0033] Fig.12 This is the second flow chart of the terminal initiating a voice call to another device in the bearer establishment method provided in the embodiment of the present application;

[0034] Fig.13 This is the third flow chart of the terminal initiating a voice call to another device in the bearer establishment method provided in the embodiment of the present application;

[0035] Fig.14 This is a fourth flow chart of a terminal initiating a voice call to another device in the bearer establishment method provided in an embodiment of the present application;

[0036] Fig.15 is a structural diagram of a first bearer establishment device provided in an embodiment of the present application;

[0037] Fig.16 is a structural diagram of a second bearer establishment device provided in an embodiment of the present application;

[0038] Fig.17 is a structural diagram of a fourth bearer establishment device provided in an embodiment of the present application;

[0039] Fig.18 It is a schematic diagram of the hardware structure of the communication device provided in the embodiment of the present application;

[0040] Fig.19 It is a hardware receiving schematic diagram of a terminal provided in an embodiment of the present application;

[0041] Fig. 20 This is one of the hardware structure diagrams of the network device provided in the embodiment of the present application;

[0042] Fig.21 This is the second hardware structure diagram of the network device provided in the embodiment of the present application. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0044] The terms involved in the embodiments of the present application are explained below.

[0045] 1. The terminal executes the voice call process

[0046] Typically, a terminal can initiate a voice call to another device via a wireless network. Taking the wireless network as a fourth-generation mobile communication technology (4th-Generation, 4G) network as an example, the specific process is as follows: Figure 1 As shown:

[0047] 1) A terminal (eg, user equipment (UE)-1) may first register with a 4G network and establish a packet data network (PDN) connection-1 for transmitting data services.

[0048] 2) Then, a PDN connection-2 for transmitting voice services is established, so that UE-1 can communicate with other devices (eg, UE-2) through PDN connection-1 and / or PDN connection-2.

[0049] 3) When UE-1 initiates a voice call to UE-2, UE-1 can send an Invite message to the Proxy-Call Session Control Function (P-CSCF) network element through an Invite message to initiate a call request with UE-2, and the Session Description Protocol (SDP) request offer in the Invite message carries information about the voice media to be established.

[0050] 4) After receiving the Invite message, the P-CSCF network element sends the Invite message to the Serving Call Session Control Function (S-CSCF) network element.

[0051] 5) The S-CSCF network element may send an Invite message to UE-2.

[0052] 6) UE-2 may reply a response message to the S-CSCF network element. The response message carries an SDP answer, and the SDP answer is used to negotiate the information of the voice media to be established.

[0053] 7) The S-CSCF network element may send the response message to the P-CSCF network element.

[0054] 8) The P-CSCF network element may send the negotiated voice media information carried in the above SDP answer to the Policy and Charging Rules Function (PCRF) network element, where the negotiated voice media information is obtained based on the SDP answer.

[0055] 9) The PCRF network element may send a determined Quality of Service (QoS) policy to a Packet Data Network Gateway (PGW).

[0056] 10) The PGW may send an Update Bearer request message to the Serving GateWay (SGW), where the Update Bearer request message is used to establish a voice-dedicated bearer.

[0057] 11) The SGW may send an update bearer request message to a Mobility Management Entity (MME) network element to establish a dedicated voice bearer.

[0058] 12) The MME network element may send a Bearer Modify request message to the base station. The Bearer Modify request message includes the QoS parameters corresponding to the voice dedicated bearer and an Evolved Packet System Bearer ID (Evolved Packet System Bearer ID, EBI).

[0059] 13) The base station may send an RRC connection reconfiguration message to UE-1. The RRC connection reconfiguration message includes SRB-ToAddMod information, and the SRB-ToAddMod information is used to establish a DRB corresponding to a dedicated voice bearer.

[0060] 14) UE-1 may establish a DRB between UE-1 and the base station, and reply with an RRC connection reconfiguration response message.

[0061] 15) The base station may send a bearer modification response message to the MME network element.

[0062] 16) The MME network element may send an update bearer response message to the SGW.

[0063] 17) SGW may send an update bearer response message to PGW.

[0064] 18) The PGW may send a response message to the PCRF network element to notify the PCRF network element that the policy sent by the PCRF network element has been executed.

[0065] 19) The PCRF network element may send a response message to the P-CSCF network element to notify whether the voice dedicated bearer is successfully established.

[0066] 20) If the dedicated voice bearer is established successfully, the P-CSCF network element can send a 183 response message to UE-1. Otherwise, the P-CSCF network element can send a Cancel message to UE-2 to end the call.

[0067] 21) When the user of UE-2 answers the incoming call, UE-2 may send a 200OK message to the S-CSCF network element.

[0068] 22) The 200OK message is routed to UE-1. UE-1 determines from the 200OK message that the user of UE-2 has answered the call and starts the call.

[0069] 2. PDN connection

[0070] Typically, a PDN connection refers to an Internet Protocol (IP) connection between a terminal and a 4G network. Each PDN connection has at least one default Evolved Packet System (EPS) bearer. Optionally, each PDN connection can also have a dedicated EPS bearer.

[0071] Each EPS bearer consists of two parts: Figure 2 As shown, first, the DRB between the terminal (such as UE) and the base station; second, the connection between the base station and the core network, including: the S1 bearer between the base station and the SGW, and the S5 / S8 bearer between the SGW and the PGW.

[0072] 3. Protocol Data Unit (PDU) Session

[0073] Generally, a PDU session is an IP connection between a terminal and a 5th-generation (5G) network. A PDU session is the concept corresponding to a PDN connection in 5G. A QoS flow is the concept corresponding to an EPS bearer in 5G.

[0074] Each QoS flow consists of two parts: first, the DRB between the terminal and the base station; second, the connection between the base station and the core network, including: the N2 connection between the base station and the user plane function (UPF) network element.

[0075] 4. The number of connection channels that can be established between the terminal and the network device

[0076] Generally, the number of connection channels that can be established between a terminal and a network device (eg, an access network device (base station)) is limited.

[0077] Among them, in the 4G network, in the Narrow Band Internet of Things (NB-IOT) scenario, the number of connection channels that can be established between the terminal and the base station is usually 2, that is, the number of DRBs that can be established between the terminal and the base station is 2, and the number of S1 bearers and S5 / S8 bearers between the base station and the core network is 2. In the non-NB-IOT scenario, the number of connection channels that can be established between the terminal and the base station is usually 8, that is, the number of DRBs that can be established between the terminal and the base station is 8, and the number of S1 bearers and S5 / S8 bearers between the base station and the core network is 8.

[0078] 5. Other terms

[0079] The terms "first", "second", etc. of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of one type, and the number of objects is not limited, for example, the first object can be one or more. In addition, "or" in the present application represents at least one of the connected objects. For example, "A or B" covers three schemes, namely, Scheme 1: including A but not including B; Scheme 2: including B but not including A; Scheme 3: including both A and B. The character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0080] The term "indication" in this application can be a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, operations to be performed, or request results in the sent indication; an indirect indication can be understood as the receiver determining the corresponding information according to the indication sent by the sender, or making a judgment and determining the operation to be performed or the request result according to the judgment result.

[0081] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA) or other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described technology can be used for the systems and radio technologies mentioned above as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6 th Generation, 6G) communication system.

[0082] Figure 3A block diagram of a wireless communication system applicable to an embodiment of the present application is shown. The wireless communication system includes a terminal 11 and a network device 12. Among them, the terminal 11 can be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a handheld computer, a netbook, an ultra-mobile personal computer (Ultra-mobile Personal Computer, UMPC), a mobile Internet device (Mobile Internet Device, MID), an augmented reality (Augmented Reality, AR), a virtual reality (Virtual Reality, VR) device, a robot, a wearable device (Wearable Device), an aircraft (flight vehicle), a vehicle-mounted device (Vehicle User Equipment, VUE), a ship-mounted device, a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (home appliances with wireless communication functions, such as refrigerators, televisions, washing machines or furniture, etc.), a game console, a personal computer (Personal computer, PC), a teller machine or a self-service machine and other terminal side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. In addition to the above-mentioned terminal devices, it can also be a chip in the terminal, such as a modem chip, a system-on-chip (System on Chip, SoC), etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network device 12 may include an access network device or a core network device, wherein the access network device may also be referred to as a radio access network (Radio Access Network, RAN) device, a radio access network function or a radio access network unit. The access network device may include a base station, a wireless local area network (Wireless Local Area Network, WLAN) access point (Access Point, AS) or a wireless fidelity (Wireless Fidelity, WiFi) node, etc.Among them, the base station may be referred to as a Node B (NB), an evolved Node B (eNB), a next generation Node B (gNB), a New Radio Node B (NR Node B), an access point, a Relay Base Station (RBS), a Serving Base Station (SBS), a Base Transceiver Station (BTS), a radio base station, a radio transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a Home Node B (HNB), a Home Evolved Node B (home evolved NodeB), a Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiments of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0083] The core network equipment may include but is not limited to at least one of the following: core network node, core network function, mobility management entity (Mobility Management Entity, MME), access mobility management function (Access and Mobility Management Function, AMF), session management function (Session Management Function, SMF), user plane function (User Plane Function, UPF), policy control function (Policy Control Function, PCF), policy and charging rules function unit (Policy and Charging Rules Function, PCRF), edge application service discovery function (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Manaffement, UDM), unified data storage (Unified Data Repository, UDR), home user server (Home Subscriber Server, HSS), centralized network configuration (CNC), network storage function (Network Repository Function, NRF), network exposure function (Network Exposure Function, NEF), local NEF (Local NEF, or L-NEF), binding support function (Binding Support Function, BSF), application function (Application Function, AF), etc. It should be noted that in the embodiment of the present application, only the core network device in the NR system is introduced as an example, and the specific type of the core network device is not limited.

[0084] The following, in combination with the accompanying drawings, describes in detail the bearer establishment method, apparatus, terminal, network device and readable storage medium provided in the embodiments of the present application through some embodiments and their application scenarios.

[0085] The bearer establishment method provided in the embodiment of the present application can be executed by a first bearer establishment device, or a first network device, or a functional module or entity in the first network device. The bearer establishment method provided in the embodiment of the present application is described by taking the first network device executing the bearer establishment method as an example.

[0086] Figure 4FIG. 1 is a flow chart showing a method for establishing a bearer according to an embodiment of the present application. Figure 4 As shown, the bearer establishment method provided in the embodiment of the present application may include the following steps 101 and 102.

[0087] Step 101: A first network device receives a first message from a second network device.

[0088] In some embodiments of the present application, the first network device is an access network device, and the second network device is a core network element such as an MME network element or an AMF network element.

[0089] Among them, when the second network device is a network device in a 4G network, the second network device can specifically be an MME network element; or, when the second network device is a network device in a 5G network, the second network device can specifically be an AMF network element; or, when the second network device is a network device in a sixth-generation mobile communication technology (6th-Generation, 6G) 6G network, the second network device is a network element that communicates with a base station.

[0090] In the embodiment of the present application, the above-mentioned first message is used to establish a bearer for transmitting business data of the first business.

[0091] In an embodiment of the present application, the above-mentioned first message can trigger the first network device to send first configuration information to the terminal.

[0092] In some embodiments of the present application, when a terminal is connected to a first network device, when the terminal initiates a voice call to another terminal, the terminal can send an Invite message to a P-CSCF network element and trigger a voice call process, so that the first network device can receive a first message from the second network device.

[0093] Optionally, when the terminal is connected to the first network device, when the terminal receives a voice call initiated by another terminal, the terminal may send a response message to the P-CSCF network element, so that the first network device may receive the first message from the second network device.

[0094] Optionally, the first message may be a bearer modification request message, wherein the bearer modification request message may include QoS parameters and EBI corresponding to the voice dedicated bearer.

[0095] It can be understood that after the terminal can send an Invite message to the P-CSCF network element, it can execute Figure 1 Steps 4 to 12 in the embodiment of the present invention are performed, so that the first network device can receive a bearer modification request message, that is, a first message, from the second network device.

[0096] Step 102: The first network device sends first configuration information to the terminal according to the first message.

[0097] It should be noted that the above-mentioned "the first network device sends the first configuration information to the terminal according to the first message" can be understood as: the first network device first receives the first message and then sends the first configuration information to the terminal, or the first network device can send the first configuration information to the terminal according to the information in the first message.

[0098] In the embodiment of the present application, the first configuration information is used for at least one of the following:

[0099] Release a first DRB between the terminal and the first network device, and establish a second DRB between the terminal and the first network device;

[0100] Modify the configuration parameters corresponding to the first DRB between the terminal and the first network device.

[0101] In an embodiment of the present application, the first DRB is used to transmit the service data of the second service, and the second DRB is used to transmit the service data of the first service.

[0102] In some embodiments of the present application, the first DRB may specifically be a dedicated DRB for transmitting data for voice services.

[0103] In some embodiments of the present application, the first service may be the same as or different from the second service.

[0104] For example, assuming that the first service is a voice service, the second service may be a voice service, that is, the first service and the second service are the same, or the second service may be a data service, that is, the first service and the second service are different.

[0105] Optionally, the first service is a voice service, and the second service is a data service.

[0106] In some embodiments of the present application, the above-mentioned first configuration information may include a first EBI and a first QoS parameter. The first EBI is used by the terminal to determine or identify a first DRB, and the first QoS parameter is used by the terminal to establish a second DRB, so that the terminal can determine the first DRB based on the first EBI and release the first DRB, and establish a second DRB based on the first QoS parameter.

[0107] It should be noted that, for the content of the first QoS parameter, reference may be made to the specific description in the relevant technology, and the embodiments of the present application will not be elaborated here.

[0108] In an embodiment of the present application, the first DRB after the configuration parameters are modified can be used to transmit business data of the first business.

[0109] In some embodiments of the present application, the configuration parameters corresponding to the above-mentioned first DRB may specifically be QoS parameters. The above-mentioned first configuration information may include a first EBI and a first QoS parameter. The first EBI is used by the terminal to determine or identify the first DRB. The first QoS parameter is used to modify the QoS parameters corresponding to the first DRB, so that the terminal can modify the QoS parameters corresponding to the first DRB to the first QoS parameters. In this way, the first DRB after the configuration parameters are modified can be used to transmit business data of the first business.

[0110] In some embodiments of the present application, the first network device may send an RRC connection reconfiguration message to the terminal, where the RRC connection reconfiguration message carries the first configuration information.

[0111] An embodiment of the present application provides a bearer establishment method, in which a first network device can receive a first message from a second network device for establishing a bearer for transmitting business data of a first business, and send first configuration information to a terminal based on the first message, wherein the first configuration information is used for at least one of the following: releasing a first DRB between the terminal and the first network device, and establishing a second DRB between the terminal and the first network device; modifying configuration parameters corresponding to the first DRB between the terminal and the first network device; wherein the first DRB is used to transmit business data of the second business, and the second DRB is used to transmit business data of the first business, and the first DRB after the configuration parameters are modified can be used to transmit business data of the first business. Because when the second network device instructs the first network device to establish a bearer for transmitting the service data of the first service, the first network device can send the first configuration information to the terminal so that the terminal can release the first DRB established between the terminal and the first network device and establish the second DRB, that is, the terminal can first reduce the number of DRBs established between the terminal and the first network device, and then establish the second DRB, that is, the terminal can establish the second DRB while ensuring that the number of DRBs established between the terminal and the first network device has not reached the upper limit, instead of directly establishing a new DRB for transmitting the service data of the first service. Therefore, it can avoid the situation where the terminal cannot establish the second DRB because the number of DRBs established between the terminal and the first network device has reached the upper limit. ; and / or, because the terminal can modify the configuration parameters corresponding to the first DRB established between the terminal and the first network device when receiving the first configuration information, so as to obtain the DRB for transmitting the service data of the first service, that is, the terminal can modify the DRB for transmitting the service data of the first service without increasing the number of DRBs established between the terminal and the first network device, instead of directly establishing a new DRB for transmitting the service data of the first service. Therefore, it can avoid the situation where the terminal cannot establish the second DRB because the number of DRBs established between the terminal and the first network device reaches the upper limit, thereby reducing the probability of the terminal being unable to communicate with other devices. In this way, the quality of communication between the terminal and other devices can be improved.

[0112] Of course, the first network device sending the first configuration information to the terminal will cause the first DRB to be unable to transmit the service data of the second service. However, at this time, other network devices can still send information to the terminal through the connection channel corresponding to the first DRB before modifying the configuration parameters (for example, the first connection channel in the following embodiment). Therefore, in order to save resources, the first network device can also make the connection channel corresponding to the first DRB unable to transmit the service data of the second service, so as to avoid other network devices sending information to the terminal through the connection channel corresponding to the first DRB, thereby improving the efficiency of transmitting service data through the connection channel corresponding to the second DRB (for example, the second connection channel in the following embodiment).

[0113] It should be noted that the above-mentioned "connection channel corresponding to the first DRB" can be understood as: the connection channel to which the first DRB belongs before the configuration parameters are modified; or, a connection channel connected to the first DRB and transmitting service data of the same service. For example, the PDN connection to which the first DRB belongs before the configuration parameters are modified, or the PDU session to which the first DRB belongs before the configuration parameters are modified. The above-mentioned "connection channel corresponding to the second DRB" can be understood as: the connection channel to which the second DRB belongs; or, a connection channel connected to the second DRB and transmitting service data of the same service.

[0114] It should be noted that the embodiments of the present application are introduced using network elements and messages of a 4G network as an example, and the embodiments of the present application are also applicable to 5G networks and 6G networks.

[0115] The following will illustrate with different examples.

[0116] Example 1: Not maintaining the connection between the first network device and the core network

[0117] In this example, combined with Figure 4 ,like Figure 5 As shown, after the above step 102, the bearer establishment method provided in the embodiment of the present application may further include the following step 103.

[0118] Step 103: The first network device sends a second message to the second network device.

[0119] In some embodiments of the present application, after the first network device sends the first configuration information to the terminal, the terminal may send an RRC connection reconfiguration completion message to the first network device after releasing the first DRB and establishing a second DRB, and / or modifying the configuration parameters corresponding to the first DRB, so that the first network device can send a second message to the second network device.

[0120] In the embodiment of the present application, the second message is used for any of the following:

[0121] Release the resources corresponding to the first connection channel;

[0122] Delete the first connection channel.

[0123] The first connection channel is used to transmit the service data of the second service.

[0124] In some embodiments of the present application, the above-mentioned first connection channel can be any one of the following: PDN connection, EPS bearer, the part between the first network device of EPS bearer and the core network (such as SGW), PDU session, QoS flow, the part between the first network device of QoS flow and the core network (such as UPF).

[0125] It can be understood that when the second network device is an MME network element, the first connection channel can be any one of the following: PDN connection, EPS bearer, and the part between the first network device of the EPS bearer and the core network (such as SGW). When the second network device is an AMF network element, the first connection channel can be any one of the following: PDU session, QoS flow, and the part between the first network device of the QoS flow and the core network (such as UPF).

[0126] In some embodiments of the present application, when the second network device is an MME network element, the second message may be a S1 UE context release request message. The S1 UE context release request message may include at least one of the following: EBI, Linked EPS Bearer ID (LBI), so that the second network device may determine the first connection channel according to the EBI and / or LBI.

[0127] In some embodiments of the present application, when the second network device is an AMF network element, the above-mentioned second message can be specifically an N2 UE context release request message. The N2 UE context release request message may include: the PDU session ID of the PDU session corresponding to the first DRB before the configuration parameters are modified, so that the second network device can determine the first connection channel according to the PDU session ID.

[0128] In some embodiments of the present application, after the first network device sends the second message to the second network device, the second network device may release the resources corresponding to the first connection channel, and the context information of the first connection channel still exists; or, the second network device may delete the first connection channel, and the context information of the first connection channel will also be deleted, that is, the uplink text information of the first connection channel does not exist.

[0129] Therefore, since the first network device can instruct the second network device to release the resources corresponding to the first connection channel or delete the first connection channel, it can avoid the situation where other devices send information to the terminal through the first connection channel, thereby saving network device resources.

[0130] In this example, combined with Figure 4 ,like Figure 6 As shown, after the above step 102, the bearer establishment method provided in the embodiment of the present application may further include the following step 104.

[0131] Step 104: The first network device sends a third message to the terminal.

[0132] In the embodiment of the present application, the third message is used to release the radio resource control (RRC) connection between the terminal and the first network device.

[0133] In some embodiments of the present application, after the first network device sends the first configuration information to the terminal, Figure 1 Steps 13 to 22 in the process of establishing a session are performed, so that the terminal can make a voice call with other devices. In this way, when the voice call between the terminal and the other device ends, the first network device can send a third message to the terminal.

[0134] In some embodiments of the present application, after the first network device sends the third message to the terminal, the terminal may release the RRC connection between the terminal and the first network device and enter an idle state, and re-establish the RRC connection between the terminal and the first network device to enter a connected state.

[0135] It can be seen that since the core network may delete the first connection channel used to transmit the service data of the second service, the first network device can instruct the terminal to release the RRC connection between the terminal and the first network device, so that the terminal can re-establish the first connection channel in the subsequent process of re-establishing the RRC connection between the terminal and the first network device, so that the terminal can continue to conduct the second service with other devices through the first connection channel. Therefore, it can avoid the situation where the terminal cannot continue to conduct the second service with other devices through the first connection channel.

[0136] In some embodiments of the present application, before the above step 104, the bearer establishment method provided in the embodiment of the present application may further include the following step 1031, and the above step 104 may be specifically implemented by the following step 104a.

[0137] Step 1031: The first network device receives a fourth message from the second network device.

[0138] In this embodiment of the present application, the fourth message is used to indicate any of the following:

[0139] releasing the connection between the first network device and the second network device;

[0140] Release the second connection channel.

[0141] The second connection channel is used to transmit the service data of the first service.

[0142] In some embodiments of the present application, when a voice call between a terminal and another device ends, the terminal can send a Bye message to the other terminal, so that the other terminal can reply with a 200OK message to the terminal, so that the P-CSCF network element can send call end information to the PCRF network element, so that the PGW can send a delete bearer (Delete Bearer) request message to the SGW, and the delete bearer request message is used to delete the second connection channel, and the second connection channel is used to transmit business data of the first business, so that the SGW can send a delete bearer request message to the second network device, and the delete bearer request message is used to delete the second connection channel, so that the second network device can send the fourth message to the first network device, and the fourth message is a deactivate bearer (Deactivate Modify) request message.

[0143] Step 104a: The first network device sends a third message to the terminal according to the fourth message.

[0144] It should be noted that the above-mentioned "the first network device sends the third message to the terminal according to the fourth message" can be understood as: the first network device first receives the fourth message and then sends the third message to the terminal, or the first network device can send the third message to the terminal according to the information in the fourth message.

[0145] It can be seen that the first network device can also accurately instruct the terminal to release the RRC connection between the terminal and the first network device according to the instruction of the second network device. Therefore, it can avoid the situation where the first network device instructs the terminal to release the RRC connection between the terminal and the first network device at an inaccurate time, which leads to a decrease in the quality of communication between the terminal and other devices.

[0146] Example 2: Maintaining the connection between the first network device and the core network

[0147] In one possible implementation of this example, Figure 4 ,like Figure 7 As shown, after the above step 102, the bearer establishment method provided in the embodiment of the present application may further include the following step 105.

[0148] Step 105: When the first network device receives service data through the first connection channel, the first network device discards the received service data.

[0149] In the embodiment of the present application, the first connection channel is used to transmit business data of the second business.

[0150] In an embodiment of the present application, after the first network device sends the first configuration information to the terminal, the terminal may have released the first DRB and / or modified the configuration parameters corresponding to the first DRB, which will result in the inability to transmit service data through the first connection channel. Therefore, the first network device may directly discard the received service data when receiving the service data through the first connection channel.

[0151] It can be seen that since the first network device can directly discard the service data received through the first connection channel instead of sending the service data to the terminal through the first connection channel, it can avoid the situation where the first DRB cannot transmit the service data of the second service, resulting in failure to send the service data, thereby saving the resources required to send the service data.

[0152] In some embodiments of the present application, before the above step 105, the bearer establishment method provided by the embodiment of the present application may also include the following step 1041.

[0153] Step 1041: The first network device marks the state of the first connection channel as a first state.

[0154] In the embodiment of the present application, the first state is used to indicate that the first connection channel cannot transmit the service data of the second service.

[0155] In some embodiments of the present application, the first state may specifically be: an unavailable state, or a deactivated (eg, inactive or deactive) state.

[0156] In some embodiments of the present application, after the first network device sends the first configuration information to the terminal, the terminal may send an RRC connection reconfiguration completion message to the first network device after releasing the first DRB and establishing a second DRB, and / or modifying the configuration parameters corresponding to the first DRB, so that the first network device can mark the state of the first connection channel as the first state.

[0157] Thus, it can be seen that since the first network device can mark the state of the first connection channel as the first state, when the business data is received again in the subsequent time, the first network device can directly determine that the first connection channel cannot transmit the business data of the second business according to the first state, without spending time to determine whether the first connection channel can transmit the business data of the second business. Therefore, the time spent by the first network device in processing the business data can be reduced.

[0158] In some embodiments of the present application, after the above step 105, the bearer establishment method provided by the embodiment of the present application may further include the following steps 106 and 107.

[0159] Step 106: The first network device receives a seventh message from the second network device.

[0160] In the embodiment of the present application, the seventh message is used to instruct deletion of a second connection channel, where the second connection channel is used to transmit service data of a second service.

[0161] In some embodiments of the present application, when a voice call between a terminal and another device ends, the terminal can send a Bye message to the other terminal, so that the other terminal can reply with a 200OK message to the terminal, so that the P-CSCF network element can send call end information to the PCRF network element, so that the PGW can send a delete bearer (Delete Bearer) request message to the SGW, and the delete bearer request message is used to delete the second connection channel, and the second connection channel is used to transmit business data of the first business, so that the SGW can send a delete bearer request message to the second network device, and the delete bearer request message is used to delete the second connection channel, so that the second network device can send a seventh message to the first network device, and the seventh message can specifically be a deactivate bearer (Deactivate Modify) request message.

[0162] Step 107: The first network device sends second configuration information to the terminal according to the seventh message.

[0163] The second configuration information is used for at least one of the following:

[0164] Release the second DRB and establish the first DRB;

[0165] Modify the configuration parameters corresponding to the first DRB.

[0166] In some embodiments of the present application, the first network device can obtain the second EBI and the second QoS parameter based on the seventh message, the second EBI is used for the terminal to determine the second DRB, and the second QoS parameter is used for the terminal to establish the first DRB, and generate the seventh message based on the second EBI and the second QoS parameters, so that the terminal can determine the second DRB based on the second EBI and release the second DRB, and establish the first DRB based on the second QoS parameters.

[0167] In an embodiment of the present application, the first DRB after the configuration parameters are modified can be used to transmit business data of the second business.

[0168] It can be understood that the terminal can modify the configuration parameters corresponding to the first DRB again.

[0169] In some embodiments of the present application, the configuration parameters corresponding to the above-mentioned first DRB may specifically be QoS parameters, and the above-mentioned second configuration information may include a first EBI and a second QoS parameter. The first EBI is used by the terminal to determine or identify the first DRB, and the second QoS parameter is used to modify the QoS parameters corresponding to the first DRB again, so that the terminal can modify the QoS parameters corresponding to the first DRB to the second QoS parameters, so that the first DRB after the configuration parameters are modified can be used to transmit business data of the second business.

[0170] It can be seen that since the first network device can also send the second configuration information to the terminal according to the instruction of the second network device, so that the terminal can release the second DRB and establish the first DRB, and / or modify the configuration parameters corresponding to the first DRB, the business data of the second service can continue to be transmitted through the first DRB and / or the first DRB after the configuration parameters are modified. Therefore, the situation where the terminal is unable to continue the second service with other devices can be avoided.

[0171] In some embodiments of the present application, after the above step 1041, the bearer establishment method provided by the embodiment of the present application may further include the following step 1042.

[0172] Step 1042: The first network device marks the state of the first connection channel as the second state.

[0173] In the embodiment of the present application, the second state is used to indicate that the first connection channel can transmit service data of the second service.

[0174] In some embodiments of the present application, the second state may be: an available state or a normal state.

[0175] In some embodiments of the present application, when the first network device sends the second configuration information to the terminal, the first network device may mark the state of the first connection channel as the second state.

[0176] Thus, it can be seen that since the first network device can mark the state of the first connection channel as the second state, when the service data is received again in the subsequent time, the first network device can directly determine that the first connection channel can transmit the service data of the second service according to the second state, without spending time to determine whether the first connection channel can transmit the service data of the second service. Therefore, the time consumed in transmitting the service data of the second service can be reduced.

[0177] In another possible implementation of this example, combining Figure 4 ,like Figure 8 As shown, after the above step 102, the bearer establishment method provided in the embodiment of the present application may further include the following step 108.

[0178] Step 108: The first network device sends a fifth message to the second network device.

[0179] In the embodiment of the present application, the fifth message is used to indicate that the first connection channel cannot transmit the service data of the second service, and the first connection channel is used to transmit the service data of the second service.

[0180] In some embodiments of the present application, the fifth message also carries an EBI or LBI corresponding to the first connection channel, so that the second network device can determine the first connection channel based on the EBI or LBI.

[0181] In some embodiments of the present application, when the second network device is an AMF network element, the fifth message may specifically be an Nsmf_PDSession_UpdateSMContext Request message.

[0182] In some embodiments of the present application, the fifth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit service data of the second service.

[0183] Optionally, the third state may specifically be: an unavailable state or a deactivated (inactive or deactive) state.

[0184] In some embodiments of the present application, after the first network device sends the first configuration information to the terminal, the terminal may send an RRC connection reconfiguration completion message to the first network device after releasing the first DRB and establishing the second DRB, and / or modifying the configuration parameters corresponding to the first DRB, so that the first network device can send a fifth message to the second network device.

[0185] In this way, it can be seen that since the first network device can instruct the second network device that the first connection channel cannot transmit the service data of the second service, the second network device can notify other core network devices that they can directly discard the service data received through the first connection channel instead of sending the service data to the terminal through the first connection channel. Therefore, the resources required to transmit the service data can be saved.

[0186] In some embodiments of the present application, after the above step 108, the first network device may further execute the above steps 106 and 107 to send the second configuration information to the terminal.

[0187] It should be noted that, for the description of the first network device executing the above steps 106 and 107, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0188] In some embodiments of the present application, after the above step 108, the bearer establishment method provided by the embodiment of the present application may further include the following step 109.

[0189] Step 109: The first network device sends a sixth message to the second network device.

[0190] In the embodiment of the present application, the sixth message is used to indicate that the first connection channel can transmit the service data of the second service.

[0191] In some embodiments of the present application, the sixth message also carries an EBI or LBI corresponding to the first connection channel, so that the second network device can determine the first connection channel based on the EBI or LBI.

[0192] In some embodiments of the present application, the sixth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit service data of the second service.

[0193] Optionally, the fourth state may specifically be: an available state or a normal state.

[0194] In some embodiments of the present application, when the first network device sends the second configuration information to the terminal, the first network device may send a sixth message to the second network device.

[0195] In this way, it can be seen that since the first network device can instruct the second network device that the first connection channel can transmit the service data of the second service, the second network device can notify other core network devices that they can continue to transmit the service data received through the first connection channel instead of discarding the service data. Therefore, the situation where the terminal cannot continue to conduct the second service with other devices can be avoided.

[0196] The bearer establishment method provided in the embodiment of the present application can be executed by a second bearer establishment device, or a second network device, or a functional module or entity in the second network device. The bearer establishment method provided in the embodiment of the present application is described by taking the second network device executing the bearer establishment method as an example.

[0197] Fig. 9 FIG. 1 is a flow chart showing a method for establishing a bearer according to an embodiment of the present application. Fig. 9 As shown, the bearer establishment method provided in the embodiment of the present application may include the following steps 201 and 202.

[0198] Step 201: A second network device sends a first message to a first network device.

[0199] In some embodiments of the present application, the first network device is an access network device, and the second network device is a core network element such as an MME network element or an AMF network element.

[0200] In the embodiment of the present application, the above-mentioned first message is used to establish a bearer for transmitting business data of the first business.

[0201] In the embodiment of the present application, the above-mentioned first message is used to trigger the first network device to send first configuration information to the terminal.

[0202] It should be noted that, for the description of the second network device sending the first message to the first network device, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0203] Step 202: The second network device sends an eighth message to the third network device, or the second network device sends a ninth message to the fourth network device.

[0204] In some embodiments of the present application, the third network device may specifically be an SGW.

[0205] In the embodiment of the present application, the eighth message is used for any of the following:

[0206] Release the resources corresponding to the first connection channel;

[0207] Delete the first connection channel.

[0208] The first connection channel is used to transmit the service data of the second service.

[0209] Optionally, the eighth message is used to trigger the third network device to release resources corresponding to the first connection channel, or delete the first connection channel.

[0210] In some embodiments of the present application, the first service is a voice service, and the second service is a data service.

[0211] In some embodiments of the present application, when the eighth message is used to release resources corresponding to the first connection channel, if the second network device is an MME network element, the eighth message may specifically be a ReleaseAccess BearerRequest message, or, if the second network device is an AMF network element, the eighth message may specifically be a Nsmf_PDUSession_UpdateSMContext Request message.

[0212] In some embodiments of the present application, when the eighth message is used to delete the first connection channel, if the second network device is an MME network element, the eighth message may specifically be a Delete Session Request message, or, if the second network device is an AMF network element, the eighth message may specifically be a Nsmf_PDUSession_ReleaseSMContext message.

[0213] In the embodiment of the present application, the ninth message is used to indicate that the first connection channel cannot transmit the service data of the second service, and the first connection channel is used to transmit the service data of the second service.

[0214] In some embodiments of the present application, the fourth network device may specifically be a PGW.

[0215] In some embodiments of the present application, the ninth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit service data of the second service.

[0216] Optionally, the ninth message is used to trigger the fourth network device to mark the state of the first connection channel as a third state.

[0217] In some embodiments of the present application, the second network device may send the ninth message to the fourth network device through the third network device.

[0218] In some embodiments of the present application, after the second network device sends the ninth message to the fourth network device, the fourth network device may mark the state of the first connection channel as the third state, and directly discard the received business data when business data is received through the first connection channel.

[0219] It can be understood that the scheme in which the second network device sends the eighth message to the third network device corresponds to Example 1 in the above embodiment, that is, the scheme in which the connection between the first network device and the core network is not maintained. The scheme in which the second network device sends the ninth message to the fourth network device corresponds to Example 2 in the above embodiment, that is, the scheme in which the connection between the first network device and the core network is maintained.

[0220] An embodiment of the present application provides a bearer establishment method, where a second network device may send a first message to a first network device for establishing a bearer for transmitting business data of a first business, and send an eighth message to a third network device, or send a ninth message to a fourth network device; wherein the eighth message is used for any one of the following: releasing resources corresponding to a first connection channel; deleting the first connection channel; the first connection channel is used to transmit business data of a second business; the ninth message is used to indicate that the first connection channel cannot transmit business data of the second business, and the first connection channel is used to transmit business data of the second business. Since the second network device instructs the first network device to establish a bearer for transmitting the service data of the first service, it may result in the first connection channel being unable to transmit the service data of the second service. At this time, the second network device may notify the third network device to release the resources corresponding to the first connection channel and delete the first connection channel to avoid other network devices using resources to transmit information through the first connection channel. Therefore, the resources occupied by transmitting information through the first connection channel can be saved to reduce the probability of a low rate of transmitting the service data of the first service with other devices due to insufficient resources; or, the second network device may notify the fourth network device that the first connection channel cannot transmit the service data of the second service. Therefore, the fourth network device may not use resources to transmit information through the first connection channel. Therefore, the resources occupied by transmitting information through the first connection channel can be saved to reduce the probability of a low rate of transmitting the service data of the first service with other devices due to insufficient resources; thereby, the efficiency of the terminal performing the first service with other devices can be improved, and thus, the quality of communication between the terminal and other devices can be improved.

[0221] The following will illustrate with different examples.

[0222] Example 1: Not maintaining the connection between the first network device and the core network

[0223] In this example, "the second network device sends the eighth message to the third network device" in the above step 202 can be specifically implemented by any one of the following steps 202a and 202b.

[0224] Step 202a: When receiving the second message from the first network device, the second network device sends an eighth message to the third network device according to the second message.

[0225] In the embodiment of the present application, the second message is used for any of the following:

[0226] Release the resources corresponding to the first connection channel;

[0227] Delete the first connection channel.

[0228] It should be noted that, for the description of the first network device sending the second message, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0229] In this way, it can be seen that since the first network device can instruct the second network device to release the resources corresponding to the first connection channel, or delete the first connection channel, so that the second network device can instruct the third network device to release the resources corresponding to the first connection channel, or delete the first connection channel, it can be avoided that other devices send information to the terminal through the first connection channel, thereby saving the resources of the network devices.

[0230] Step 202b: When the tenth message is received from the fourth network device, the second network device sends an eighth message to the third network device according to the tenth message.

[0231] In the embodiment of the present application, the tenth message is used to establish a bearer for transmitting service data of the first service.

[0232] In some embodiments of the present application, after the terminal sends an Invite message to the P-CSCF network element, the following operations may be performed: Figure 1 Steps 4 to 9 in the process, so that the fourth network device (e.g., PGW) can send the tenth message to the second network device through the third network device (e.g., SGW), and the tenth message can specifically be an update bearer request message, so that the second network device can determine to send the eighth message to the third network device.

[0233] In this way, it can be seen that since the fourth network device can instruct the second network device to release the resources corresponding to the first connection channel, or delete the first connection channel, so that the second network device can instruct the third network device to release the resources corresponding to the first connection channel, or delete the first connection channel, it can be avoided that other devices send information to the terminal through the first connection channel, thereby saving the resources of the network device.

[0234] In this example, after the above step 201, the bearer establishment method provided by the embodiment of the present application may further include the following step 203.

[0235] Step 203: The second network device sends a fourth message to the first network device.

[0236] It should be noted that the embodiment of the present application does not limit the execution order of step 203 and step 202. In one example, the second network device may first execute step 203 and then execute step 202; in another example, the second network device may first execute step 202 and then execute step 203; in another example, the second network device may execute step 202 while executing step 203.

[0237] In this embodiment of the present application, the fourth message is used to indicate any of the following:

[0238] releasing the connection between the first network device and the second network device;

[0239] Release the second connection channel.

[0240] In the embodiment of the present application, the second connection channel is used to transmit business data of the first business.

[0241] It should be noted that, for the description of the second network device sending the fourth message to the first network device, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0242] In this way, it can be seen that since the second network device can also instruct the first network device to release the connection between the first network device and the second network device or release the second connection channel, the first network device can accurately instruct the terminal to release the RRC connection between the terminal and the first network device according to the instruction. Therefore, it can be avoided that the first network device instructs the terminal to release the RRC connection between the terminal and the first network device at an inaccurate timing, which leads to a decrease in the quality of communication between the terminal and other devices.

[0243] In this example, the fourth message is used to indicate the release of the connection between the first network device and the second network device. Before the above step 203, the bearer establishment method provided in the embodiment of the present application may further include the following step 2021, and the above step 203 may be specifically implemented by the following step 203a.

[0244] Step 2021: The second network device receives an eleventh message from the third network device.

[0245] In the embodiment of the present application, the eleventh message is used to delete the second connection channel.

[0246] In some embodiments of the present application, when a voice call between a terminal and another device ends, the terminal can send a Bye message to the other terminal, so that the other terminal can reply with a 200OK message to the terminal, so that the P-CSCF network element can send call end information to the PCRF network element, so that the fourth network device can send a delete bearer (Delete Bearer) request message to the third network device, and the delete bearer request message is used to delete the second connection channel, and the second connection channel is used to transmit the service data of the first service, so that the third network device can send an eleventh message to the second network device, and the eleventh message can specifically be a delete bearer request message.

[0247] Step 203a: The second network device sends a fourth message to the first network device according to the eleventh message.

[0248] In this way, it can be seen that the second network device can accurately execute the terminal to release the RRC connection between the terminal and the first network device through the first network device according to the instruction of the third network device. Therefore, it can avoid the situation where the first network device instructs the terminal to release the RRC connection between the terminal and the first network device at an inaccurate timing, which leads to a decrease in the quality of communication between the terminal and other devices.

[0249] Example 2: Maintaining the connection between the first network device and the core network

[0250] In this example, "the second network device sends a ninth message to the fourth network device" in the above step 202 can be specifically implemented by any one of the following steps 202c to 202e.

[0251] Step 202c: When the fifth message is received from the first network device, the second network device sends a ninth message to the fourth network device according to the fifth message.

[0252] In the embodiment of the present application, the fifth message is used to indicate that the first connection channel cannot transmit the service data of the second service.

[0253] In some embodiments of the present application, the fifth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit service data of the second service.

[0254] It should be noted that, for the description of the second network device sending the ninth message to the fourth network device according to the fifth message, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0255] Thus, it can be seen that the second network device can, according to the instruction of the first network device, accurately indicate to the fourth network device that the first connection channel cannot transmit the service data of the second service, so that the fourth network device can directly discard the service data of the second service, thereby saving the resources required to transmit the service data of the second service.

[0256] Step 202d: When the tenth message is received from the fourth network device, the second network device sends a ninth message to the fourth network device according to the tenth message.

[0257] In the embodiment of the present application, the tenth message is used to establish a bearer for transmitting service data of the first service.

[0258] In some embodiments of the present application, after the terminal sends an Invite message to the P-CSCF network element, the following operations may be performed: Figure 1 Steps 4 to 9 in the process, so that the fourth network device (e.g., PGW) can send the tenth message to the second network device through the third network device (e.g., SGW), and the tenth message can specifically be an update bearer request message, so that the second network device can determine to send the ninth message to the fourth network device.

[0259] In this way, it can be seen that the second network device can accurately execute the terminal to release the RRC connection between the terminal and the first network device through the first network device according to the instruction of the fourth network device. Therefore, it can avoid the situation where the first network device instructs the terminal to release the RRC connection between the terminal and the first network device at an inaccurate timing, which leads to a decrease in the quality of communication between the terminal and other devices.

[0260] Step 202e: When the twelfth message is received from the terminal, the second network device sends a ninth message to the fourth network device according to the twelfth message.

[0261] In the embodiment of the present application, the twelfth message is used to indicate that the first connection channel cannot transmit the service data of the second service.

[0262] In some embodiments of the present application, the twelfth message is used to indicate that the state of the first connection channel is the third state.

[0263] In some embodiments of the present application, the twelfth message may specifically be: a protocol configuration option (Protocol Configuration Option, PCO) message.

[0264] In some embodiments of the present application, after the first network device sends the first configuration information to the terminal, the terminal can send an RRC connection reconfiguration completion message to the first network device after releasing the first DRB and establishing a second DRB, and / or modifying the configuration parameters corresponding to the first DRB, so that the terminal can send the twelfth message to the second network device.

[0265] It can be seen that the second network device can accurately indicate to the fourth network device according to the instruction of the terminal that the first connection channel cannot transmit the service data of the second service, so that the fourth network device can directly discard the service data of the second service, thereby saving the resources required to transmit the service data of the second service.

[0266] In some embodiments of the present application, after the above step 202, the bearer establishment method provided by the embodiment of the present application may further include the following step 204.

[0267] Step 204: The second network device sends a seventh message to the first network device.

[0268] In the embodiment of the present application, the seventh message is used to instruct deletion of a second connection channel, where the second connection channel is used to transmit service data of a second service.

[0269] The seventh message is used to trigger sending second configuration information to the terminal, and the second configuration information is used for at least one of the following:

[0270] Release the second DRB and establish the first DRB;

[0271] Modify the configuration parameters corresponding to the first DRB.

[0272] Here, the first DRB after the configuration parameters are modified can be used to transmit the service data of the second service.

[0273] In some embodiments of the present application, when a voice call between a terminal and another device ends, the terminal can send a Bye message to the other terminal, so that the other terminal can reply with a 200OK message to the terminal, so that the P-CSCF network element can send call end information to the PCRF network element, so that the PGW can send a Delete Bearer request message to the SGW, and the Delete Bearer request message is used to delete the second connection channel, and the second connection channel is used to transmit the service data of the first service, so that the SGW can send a Delete Bearer request message to the second network device, and the Delete Bearer request message is used to delete the second connection channel, so that the second network device can send the seventh message to the first network device.

[0274] It can be seen that since the second network device can also instruct the first network device to send the second configuration information to the terminal so that the terminal can release the second DRB and establish the first DRB, and / or modify the configuration parameters corresponding to the first DRB, the business data of the second service can continue to be transmitted through the first DRB and / or the first DRB after modifying the configuration parameters. Therefore, it can avoid the situation where the terminal is unable to continue the second service with other devices.

[0275] It should be noted that the release of the second DRB and the establishment of the first DRB can be sent through one RRC connection reconfiguration message or through two RRC connection reconfiguration messages. In the case of sending through two RRC connection reconfiguration messages, the content of releasing the second DRB is sent first, and then the content of establishing the first DRB is sent.

[0276] In some embodiments of the present application, after "the second network device sends a ninth message to the fourth network device" in the above step 202, the bearer establishment method provided by the embodiment of the present application may further include the following step 205.

[0277] Step 205: The second network device sends a thirteenth message to the fourth network device.

[0278] In the embodiment of the present application, the thirteenth message is used to indicate that the first connection channel can transmit the service data of the second service.

[0279] In some embodiments of the present application, the thirteenth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit service data of the second service.

[0280] It can be seen that since the second network device can indicate to the fourth network device that the first connection channel can transmit the service data of the second service, the fourth network device can continue to transmit the service data received through the first connection channel instead of discarding the service data. Therefore, the situation where the terminal cannot continue to conduct the second service with other devices can be avoided.

[0281] In some embodiments of the present application, the above step 205 can be specifically implemented by any one of the following steps 205a to 205c.

[0282] Step 205a: When receiving the sixth message from the first network device, the second network device sends a thirteenth message to the fourth network device according to the sixth message.

[0283] In the embodiment of the present application, the sixth message is used to indicate that the first connection channel can transmit the service data of the second service.

[0284] In some embodiments of the present application, when the first network device sends the second configuration information to the terminal, the first network device may send the sixth message to the second network device, so that the second network device may send the thirteenth message to the fourth network device.

[0285] In some embodiments of the present application, the sixth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit service data of the second service.

[0286] In this way, it can be seen that since the first network device can instruct the second network device that the first connection channel can transmit the service data of the second service, the second network device can notify the fourth network device that it can continue to transmit the service data received through the first connection channel instead of discarding the service data. Therefore, the situation where the terminal cannot continue to conduct the second service with other devices can be avoided.

[0287] Step 205b: When the fourteenth message is received from the fourth network device, the second network device sends the thirteenth message to the fourth network device according to the fourteenth message.

[0288] In the embodiment of the present application, the fourteenth message is used to delete the second connection channel, where the second connection channel is used to transmit business data of the second business.

[0289] In some embodiments of the present application, when a voice call between a terminal and another device ends, the terminal can send a Bye message to the other terminal, so that the other terminal can reply with a 200OK message to the terminal, so that the P-CSCF network element can send call end information to the PCRF network element, so that the fourth network device can send a delete bearer request message to the second network device through the third network device, that is, the fourteenth message can specifically be a delete bearer request message. Thus, the second network device can determine to send the thirteenth message to the fourth network device.

[0290] It can be seen that since the fourth network device can instruct the second network device to delete the second connection channel, that is, the subsequent first candidate channel can continue to transmit business data, the second network device can directly notify the fourth network device that it can continue to transmit the business data received through the first connection channel, instead of discarding the business data. Therefore, it can avoid the situation where the terminal cannot continue to conduct the second business with other devices.

[0291] Step 205c: When the fifteenth message is received from the terminal, the second network device sends the thirteenth message to the fourth network device according to the fifteenth message.

[0292] In the embodiment of the present application, the fifteenth message is used to indicate that the first connection channel can transmit the service data of the second service.

[0293] In some embodiments of the present application, the fifteenth message is used to indicate that the state of the first connection channel is the fourth state.

[0294] In some embodiments of the present application, when the terminal releases the second DRB and establishes the first DRB according to the second configuration information, and / or modifies the configuration parameters corresponding to the first DRB, that is, when the service data of the second service can continue to be transmitted through the first DRB and / or the first DRB after modifying the configuration parameters, the terminal can send the fifteenth message to the second network device, so that the second network device can determine to send the thirteenth message to the fourth network device.

[0295] It can be seen that since the terminal can also indicate to the second network device that the first connection channel can transmit the service data of the second service, the second network device can directly notify the fourth network device to continue transmitting the service data received through the first connection channel instead of discarding the service data. Therefore, the situation where the terminal cannot continue to conduct the second service with other devices can be avoided.

[0296] The bearer establishment method provided in the embodiment of the present application can be executed by a fourth bearer establishment device, or a terminal, or a functional module or entity in the terminal. The bearer establishment method provided in the embodiment of the present application is described by taking the terminal executing the bearer establishment method as an example.

[0297] Fig.10 FIG. 1 is a flow chart showing a method for establishing a bearer according to an embodiment of the present application. Fig.10 As shown, the bearer establishment method provided in the embodiment of the present application may include the following steps 301 and 302.

[0298] Step 301: A terminal receives first configuration information from a first network device.

[0299] In some embodiments of the present application, when the terminal is connected to the first network device, when the terminal initiates a voice call to another terminal, the terminal can send an Invite message to the P-CSCF network element and trigger the voice call process, so that the Figure 1 Steps 4 to 12 in the embodiment, so that the first network device can receive a bearer modification request message, that is, a first message, from the second network device, and send first configuration information to the terminal according to the first message, so that the terminal can receive the first configuration information.

[0300] Step 302: The terminal performs at least one of the following according to the first configuration information:

[0301] Release a first DRB between the terminal and the first network device, and establish a second DRB between the terminal and the first network device;

[0302] Modify the configuration parameters corresponding to the first DRB between the terminal and the first network device.

[0303] In an embodiment of the present application, the above-mentioned first DRB is used to transmit business data of the second business, and the above-mentioned second DRB is used to transmit business data of the first business. The first DRB after modifying the configuration parameters can be used to transmit business data of the first business.

[0304] In some embodiments of the present application, the first service is a voice service, and the second service is a data service.

[0305] The embodiment of the present application provides a bearer establishment method, in which a terminal can receive first configuration information from a first network device, and according to the first configuration information, release a first DRB between the terminal and the first network device, and establish a second DRB between the terminal and the first network device, and / or modify the configuration parameters corresponding to the first DRB between the terminal and the first network device; wherein the first DRB is used to transmit the service data of the second service, and the second DRB is used to transmit the service data of the first service, and the first DRB after the configuration parameters are modified can be used to transmit the service data of the first service. Since the terminal can release the first DRB established between the terminal and the first network device and establish the second DRB when receiving the first configuration information, that is, the terminal can first reduce the number of DRBs established between the terminal and the first network device, and then establish the second DRB, that is, the terminal can establish the second DRB while ensuring that the number of DRBs established between the terminal and the first network device does not reach the upper limit, instead of directly establishing a new DRB for transmitting the service data of the first service. Therefore, it can avoid the situation where the terminal cannot establish the second DRB because the number of DRBs established between the terminal and the first network device reaches the upper limit; and / or, since the terminal receives the first configuration information, , the configuration parameters corresponding to the first DRB established between the terminal and the first network device can be modified to obtain a DRB for transmitting the business data of the first business, that is, the terminal can modify the DRB for transmitting the business data of the first business without increasing the number of DRBs established between the terminal and the first network device, instead of directly establishing a new DRB for transmitting the business data of the first business. Therefore, it can avoid the situation where the terminal cannot establish a second DRB because the number of DRBs established between the terminal and the first network device reaches the upper limit; thereby, the probability of the terminal being unable to communicate with other devices can be reduced, and thus the quality of communication between the terminal and other devices can be improved.

[0306] The following will illustrate with different examples.

[0307] Example 1: Not maintaining the connection between the first network device and the core network

[0308] In this example, after the above step 302, the bearer establishment method provided in the embodiment of the present application may further include the following steps 303 and 304.

[0309] Step 303: The terminal receives a third message from the first network device.

[0310] It should be noted that, for the description of the terminal receiving the third message, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0311] Step 304: The terminal releases the RRC connection between the terminal and the first network device according to the third message.

[0312] In this way, it can be seen that since the terminal can release the RRC connection between the terminal and the first network device according to the instruction of the first network device, so that the terminal can enter the idle state, in the subsequent steps, the terminal can establish the first connection channel again during the process of establishing the RRC connection between the terminal and the first network device, so that the terminal can communicate with other devices through the first connection channel. Therefore, the situation where the terminal cannot communicate with other devices through the first connection channel can be avoided.

[0313] In some embodiments of the present application, after the above step 304, the bearer establishment method provided by the embodiment of the present application may further include the following step 305.

[0314] Step 305: When the RRC connection between the terminal and the first network device is released, the terminal establishes an RRC connection between the terminal and the first network device according to the sixteenth message.

[0315] In an embodiment of the present application, the above-mentioned sixteenth message includes at least one of the following: a service request message, a location update message, and a registration message.

[0316] It should be noted that, for the description of the terminal obtaining the sixteenth message, reference may be made to the specific description in the relevant technology, and the embodiments of the present application will not be elaborated here.

[0317] In some embodiments of the present application, when the first connection channel has been deleted, upon completing the release of the RRC connection between the terminal and the first network device, the terminal may establish the RRC connection between the terminal and the first network device according to the sixteenth message.

[0318] In some embodiments of the present application, when the terminal completes establishing the RRC connection between the terminal and the first network device, the terminal may also initiate a process of establishing the first connection channel.

[0319] It can be seen that when the RRC connection between the terminal and the first network device is released, the terminal can directly establish the RRC connection between the terminal and the first network device according to the sixteenth message without waiting until the terminal needs to transmit business data. Therefore, the terminal can directly transmit the business data that needs to be transmitted without waiting for the terminal to establish the RRC connection between the terminal and the first network device. In this way, the time consumed in transmitting business data can be reduced.

[0320] Example 2: Not maintaining the connection between the first network device and the core network

[0321] In this example, after the above step 302, the bearer establishment method provided by the embodiment of the present application may further include the following step 306.

[0322] Step 306: The terminal sends a twelfth message to the second network device.

[0323] In some embodiments of the present application, the first network device is an access network device, and the second network device is a core network element such as an MME network element or an AMF network element.

[0324] In the embodiment of the present application, the twelfth message is used to indicate that the first connection channel cannot transmit the service data of the second service.

[0325] In some embodiments of the present application, the twelfth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit service data of the second service.

[0326] It should be noted that, for the description of the terminal sending the twelfth message to the second network device, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0327] It can be seen that the terminal can indicate to the second network device that the first connection channel cannot transmit the service data of the second service, so that the second network device can notify other core network devices to directly discard the service data received through the first connection channel instead of sending the service data to the terminal through the first connection channel. Therefore, the resources required to transmit the service data can be saved.

[0328] In this example, after the above step 302, the bearer establishment method provided in the embodiment of the present application may further include the following steps 307 and 308.

[0329] Step 307: The terminal receives second configuration information from the first network device.

[0330] It should be noted that, for the description of the terminal receiving the second configuration information from the first network device, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0331] Step 308: The terminal performs at least one of the following according to the second configuration information:

[0332] Release the second DRB and establish the first DRB;

[0333] Modify the configuration parameters corresponding to the first DRB.

[0334] In an embodiment of the present application, the first DRB after the configuration parameters are modified can be used to transmit business data of the second business.

[0335] It can be seen that since the terminal can receive the second configuration information from the first network device, the terminal can release the second DRB and establish the first DRB, and / or modify the configuration parameters corresponding to the first DRB, so as to continue to transmit the business data of the second service through the first DRB and / or the first DRB after modifying the configuration parameters. Therefore, it can avoid the situation where the terminal cannot continue to conduct the second service with other devices.

[0336] In some embodiments of the present application, after the above step 308, the bearer establishment method provided by the embodiment of the present application may further include the following step 309.

[0337] Step 309: The terminal sends a fifteenth message to the second network device.

[0338] In the embodiment of the present application, the fifteenth message is used to indicate that the first connection channel can transmit the service data of the second service.

[0339] It should be noted that, for the description of the terminal sending the fifteenth message to the second network device, reference may be made to the specific description in the above embodiment, and the embodiments of the present application will not be repeated here.

[0340] In some embodiments of the present application, the fifteenth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit service data of the second service.

[0341] In this way, it can be seen that since the terminal can also indicate to the second network device that the first connection channel can transmit the service data of the second service, the second network device can directly notify other core network devices to continue transmitting the service data received through the first connection channel instead of discarding the service data. Therefore, it can avoid the situation where the terminal cannot continue to conduct the second service with other devices.

[0342] The following will use specific examples to illustrate the complete process of the bearer establishment method provided in the embodiment of the present application.

[0343] Assume that the first network device is an access network device (such as an eNB), the second network device is an MME network element, the third network device is an SGW, and the fourth network device is a PGW.

[0344] In a possible embodiment, the connection between the first network device and the core network may be maintained, such as Fig.11 As shown, the specific steps include:

[0345] 1) You can execute Figure 1 Steps 1 to 11 in the embodiment, whereby the MME may send a bearer modification (BearerModify) request message (i.e., the first message in the above embodiment) to the eNB, where the bearer modification request message includes the QoS parameters and EBI corresponding to the voice dedicated bearer;

[0346] 2) The eNB may send an RRC connection reconfiguration message to the terminal (e.g., UE-1), where the RRC connection reconfiguration message includes first configuration information, where the first configuration information may include at least one of the following: information on releasing the DRB (i.e., the first DRB) corresponding to the data PDN connection (i.e., the PDN connection used to transmit the service data of the first service), creating a new DRB (i.e., the second DRB) corresponding to the voice bearer, and modifying the DRB (i.e., the first DRB) corresponding to the data PDN connection (i.e., the PDN connection used to transmit the service data of the first service) to the DRB (i.e., the second DRB) corresponding to the voice bearer;

[0347] 3) UE-1 sends an RRC connection reconfiguration complete message to the eNB;

[0348] 4) Optionally, the eNB may send an S1 UE context release request message (i.e., the second message in the above embodiment) to the MME, where the S1 UE context release request message includes EBI information corresponding to the data PDN connection, and the EBI may also be an LBI;

[0349] 5) If Fig.11 In 5a, the MME network element sends a request message to the SGW to release the data PDN connection of UE-1 through a Release Access Bearer Request message, and the request message includes EBi or LBI; or Fig.11In 5b, the MME network element initiates a request to delete the data PDN connection of UE-1 to the SGW through the Delete Session Request message, and the request includes EBI or LBI information; wherein the Release Access Bearer Request message and the DeleteSession Request message can be understood as the eighth message in the above embodiment; it should be noted here that the MME network element can send the eighth message according to step 4) of this example; or, the MME network element can also determine to send the eighth message by itself, for example, the MME network element can determine to release the PDN connection corresponding to the data service according to the message sent by the PGW to establish a dedicated voice bearer for UE-1, so as to determine to send the eighth message;

[0350] 6) SGW replies a confirmation message to the MME network element;

[0351] 7) Execute as Figure 1 Steps 13 to 22 in the above steps are performed to complete the process of establishing the session;

[0352] 8) If UE-1 hangs up the call, UE-1 sends a Bye message to UE-2 (i.e., other devices in the above embodiment);

[0353] 9) UE-2 sends a 200 OK reply to UE-1 to confirm the message;

[0354] 10) The P-CSCF network element sends a call end message to the PCRF network element;

[0355] 11) PGW sends a Delete Bearer request message to SGW to delete the voice dedicated bearer;

[0356] 12) The SGW sends a delete bearer request message (i.e., the eleventh message in the above embodiment) to the MME network element to delete the voice dedicated bearer;

[0357] 13) The MME network element sends a Deactivate Modify request message to the eNB;

[0358] 14) The eNB sends an RRC connection reconfiguration message to UE-1, in which the DRB corresponding to the dedicated voice bearer is deleted;

[0359] 15) UE-1 replies with an RRC connection reconfiguration response message;

[0360] 16) The eNB sends a response message to the MME network element;

[0361] 17) The MME network element sends a response message to the SGW;

[0362] 18) SGW sends a response message to PGW;

[0363] 19) PGW sends a response message to the PCRF network element;

[0364] 20) The PCRF network element sends a response message to the P-CSCF network element;

[0365] 21) Optionally, the MME network element sends a message (i.e., the fourth message in the above embodiment) to the eNB, for releasing UE-1 to the idle state; wherein the MME network element may send the message to the eNB according to the release of the voice dedicated bearer (step 12);

[0366] 22) the eNB sends an RRC connection release message (i.e., the third message in the above embodiment) to UE-1; wherein, the eNB may send a release message to UE-1 according to the message in step 21; or, the eNB may send the message in step 22 (i.e., the third message in the above embodiment) to UE-1 according to the release of the voice dedicated bearer (step 13), in which case step 21 may not be performed;

[0367] 23) After entering the idle state, UE-1 immediately enters the connected state again through the above-mentioned sixteenth message; the sixteenth message includes at least one of the following: a service request message, a location update message, and a registration message; wherein UE-1 may determine to enter the connected state again after the call ends based on the fact that the DRB (i.e., the first DRB) corresponding to the data PDN connection is deleted during the call;

[0368] 24) Optionally, UE-1 may initiate a PDN connection establishment request.

[0369] In another possible embodiment, the connection between the first network device and the core network may not be maintained, which specifically includes the following three solutions:

[0370] Solution 1: The eNB marks the data PDN as unavailable or inactive and discards the received data.

[0371] Combination Fig.11 ,like Fig.12 As shown, steps 1-3 are Fig.11 Same as steps 1-3 in;

[0372] 4) The eNB records that the data PDN connection (i.e., the first connection channel) is in an unavailable state or a deactivated state, i.e., the first state in the above embodiment; when the eNB receives data sent by the network to UE-1, the eNB directly discards the received data

[0373] 5) Same Fig.11 Steps 7-13

[0374] 6) eNB sends an RRC connection reconfiguration message to UE-1, and the RRC connection reconfiguration message includes second configuration information, and the second configuration information includes any one of the following items: releasing (releasing) the DRB corresponding to the voice bearer and creating a new DRB corresponding to the data PDN connection; releasing (releasing) the DRB corresponding to the voice bearer and creating a new DRB corresponding to the data PDN connection.

[0375] 7) UE-1 sends an RRC connection reconfiguration complete message to the eNB; it should be noted that the above steps 6 and 7 are performed according to the information recorded in step 4;

[0376] 8) The eNB marks the data PDN connection (ie, the first connection channel) as a normal state, ie, the second state.

[0377] 9) Execution Fig.11 Steps 16-20

[0378] Solution 2: The eNB notifies the MME network element, and the MME network element notifies the PGW not to send downlink data through the data PDN connection.

[0379] Combination Fig.11 and Fig.12 ,like Fig.13 As shown, steps 1-3 are Fig.11 Same as steps 1-3 in;

[0380] 4) The eNB notifies the MME network element, for example, by sending a fifth message to the MME network element that the data PDN connection (i.e., the first connection channel) is unavailable or in a deactivated state, i.e., the third state; the fifth message may carry an EBI corresponding to the data PDN connection, and the EBI may also be an LBI;

[0381] 5) The MME network element sends a first indication (i.e., the ninth message in the above embodiment) to the SGW, indicating that the data PDN connection is unavailable or in a deactivated state; it should be noted that the MME network element may determine to initiate the first indication according to the message sent by the eNB in ​​step 4; or, the MME network element may determine to send the first indication by itself (in this case, step 4 is not required), and the MME network element specifically determines to send the first indication according to a message (i.e., the tenth message) sent by the PGW to establish a dedicated voice bearer for UE-1;

[0382] 6) The SGW sends a first instruction to the PGW;

[0383] 7) The PGW records that the data PDN connection is in an unavailable state or a deactivated (inactive or deactive) state, i.e., the third state; when the PGW receives data sent to UE-1, the PGW directly discards the received data;

[0384] 8) Same Fig.12 Steps 5-7;

[0385] 9) The eNB notifies the MME network element, for example, through the sixth message, that the data PDN connection is available or in a normal state, that is, in the fourth state; the eNB sends the EBI information corresponding to the data PDN connection to the MME network element. The EBI may also be an LBI;

[0386] 10) The MME network element sends a third indication (i.e., the thirteenth message) to the SGW, where the third indication is used to indicate that the data PDN connection is available or in a normal state; wherein the MME network element may determine to send the third indication according to step 9; or, the MME network element may determine to send the third indication by itself (step 9 is not required in this case), and the MME network element specifically determines to send the third indication based on a message (i.e., the fourteenth message) sent by the PGW to delete the dedicated voice bearer.

[0387] 11. SGW sends the third instruction to PGW

[0388] 12. The PGW records that the data PDN connection is in an available state or in a normal state, that is, in the fourth state; when the PGW receives data sent to UE-1, the PGW sends the data to UE-1 normally.

[0389] Solution 3: UE-1 notifies PGW not to send downlink data through the data PDN connection.

[0390] Combination Fig.11 and Fig.12 ,like Fig.14 As shown, steps 1-3 are Fig.11 Same as steps 1-3 in;

[0391] 4) UE-1 sends a bearer resource modification request message (i.e., the twelfth message), and carries first indication information in a PCO (Protocol Configuration Option) of the request message, where the first indication is used to indicate that the data PDN connection is unavailable or in a deactivated state, i.e., in the third state;

[0392] 5) The MME network element sends the PCO to the SGW;

[0393] 6) The SGW network element sends the PCO to the PGW;

[0394] 7) The PGW records that the data PDN connection (i.e., the first connection channel) is in an unavailable state or a deactivated state according to the first indication information contained in the PCO; when the PGW receives data sent to UE-1, the PGW directly discards the received data;

[0395] 8) Same Fig.12 Steps 5-7;

[0396] 9) The UE sends a bearer resource modification request (i.e., the fifteenth message), and carries second indication information in the PCO of the request message, where the second indication is used to indicate that the data PDN connection is available or in a normal state, i.e., in the fourth state;

[0397] 10) The MME network element sends the PCO to the SGW;

[0398] 11) SGW sends the PCO to PGW;

[0399] 12) PGW records the data PDN connection as being in an available state or a normal state, that is, the fourth state, according to the first indication information contained in the PCO; when PGW receives data to be sent to UE-1, PGW sends data to UE-1 normally.

[0400] The bearer establishment method provided in the embodiment of the present application may be executed by a first bearer establishment device. In the embodiment of the present application, the bearer establishment method executed by the first bearer establishment device is taken as an example to illustrate the first bearer establishment device provided in the embodiment of the present application.

[0401] Fig.15 A possible structural diagram of a bearer establishment device involved in an embodiment of the present application is shown, and the bearer establishment device is a first bearer establishment device. Fig.15 As shown, the first bearer establishing device 40 may include: a receiving module 41 and a sending module 42.

[0402] Among them, the receiving module 41 is used to receive a first message from the second bearer establishment device, and the first message is used to establish a bearer for transmitting the service data of the first service. The sending module 42 is used to send first configuration information to the fourth bearer establishment device according to the first message received by the receiving module 41, and the first configuration information is used for at least one of the following: releasing the first DRB between the first bearer establishment device and the fourth bearer establishment device, and establishing the second DRB between the first bearer establishment device 40 and the fourth bearer establishment device; modifying the configuration parameters corresponding to the first DRB between the first bearer establishment device 40 and the fourth bearer establishment device. Among them, the above-mentioned first DRB is used to transmit the service data of the second service, and the above-mentioned second DRB is used to transmit the service data of the first service. The first DRB after modifying the configuration parameters can be used to transmit the service data of the first service.

[0403] An embodiment of the present application provides a bearer establishment device, which is a first bearer establishment device. When the second bearer establishment device instructs the first bearer establishment device to establish a bearer for transmitting business data of a first business, the first bearer establishment device can send first configuration information to the fourth bearer establishment device, so that the fourth bearer establishment device can release the first DRB established between the fourth bearer establishment device and the first bearer establishment device, and establish a second DRB, that is, the fourth bearer establishment device can first reduce the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device, and then establish the second DRB, that is, the fourth bearer establishment device can establish the second DRB while ensuring that the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device has not reached the upper limit, instead of directly establishing a new DRB for transmitting the business data of the first business. Therefore, it can be avoided that the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device reaches the upper limit. This results in the fourth bearer establishment device being unable to establish the second DRB; and / or, because the fourth bearer establishment device can modify the configuration parameters corresponding to the first DRB established between the fourth bearer establishment device and the first bearer establishment device when receiving the first configuration information, so as to obtain the DRB for transmitting the service data of the first service, that is, the fourth bearer establishment device can modify the DRB for transmitting the service data of the first service without increasing the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device, instead of directly establishing a new DRB for transmitting the service data of the first service. Therefore, it can avoid the situation where the fourth bearer establishment device is unable to establish the second DRB due to the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device reaching the upper limit, thereby reducing the probability of the fourth bearer establishment device being unable to communicate with other devices. In this way, the quality of communication between the fourth bearer establishment device and other devices can be improved.

[0404] In a possible implementation, the sending module 42 is further configured to send a second message to the second bearer establishment device, the second message being used for any of the following: releasing resources corresponding to the first connection channel; deleting the first connection channel, wherein the first connection channel is used to transmit service data of the second service.

[0405] In a possible implementation, the sending module 42 is further configured to send a third message to the first bearer establishing device 40 , where the third message is used to release the RRC connection between the fourth bearer establishing device and the first bearer establishing device 40 .

[0406] In a possible implementation, the receiving module 41 is further configured to receive a fourth message from the second bearer establishment device. The sending module 42 is specifically configured to send a third message to the fourth bearer establishment device according to the fourth message received by the receiving module 41. The fourth message is used to indicate any one of the following: releasing the RRC connection between the first bearer establishment device 40 and the second bearer establishment device; releasing the second connection channel; the second connection channel is used to transmit the service data of the first service.

[0407] In a possible implementation, the first bearer establishment device 40 provided in the embodiment of the present application further includes: a processing module. The processing module is further configured to discard the received service data when the first bearer establishment device 40 receives service data through the first connection channel, and the first connection channel is used to transmit the service data of the second service.

[0408] In a possible implementation manner, the processing module is further configured to mark the state of the first connection channel as a first state, where the first state is used to indicate that the first connection channel cannot transmit service data of the second service.

[0409] In a possible implementation, the processing module is further configured to mark the state of the first connection channel as a second state after marking the state of the first connection channel as the first state, wherein the second state is used to indicate that the first connection channel can transmit service data of a second service.

[0410] In a possible implementation, the sending module 42 is further configured to send a fifth message to the second bearer establishing device, the fifth message being used to indicate that the first connection channel cannot transmit service data of the second service. The first connection channel is used to transmit service data of the second service.

[0411] In a possible implementation manner, the fifth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit service data of the second service.

[0412] In a possible implementation, the sending module 42 is further configured to send a sixth message to the second bearer establishing device after sending the fifth message to the second bearer establishing device, where the sixth message is used to indicate that the first connection channel can transmit service data of the second service.

[0413] In a possible implementation manner, the sixth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit service data of the second service.

[0414] In a possible implementation, the receiving module 41 is further used to receive a seventh message from the second bearer establishment device, the seventh message being used to indicate the deletion of the second connection channel, the second connection channel being used to transmit the service data of the second service. The sending module 42 is further used to send second configuration information to the terminal according to the seventh message received by the receiving module 41, the second configuration information being used for at least one of the following: releasing the second DRB and establishing the first DRB; modifying the configuration parameters corresponding to the first DRB; wherein the first DRB after the configuration parameters are modified can be used to transmit the service data of the second service.

[0415] In a possible implementation, the first bearer establishment device is an access network device, and the second bearer establishment device is an MME network element or an AMF network element.

[0416] In a possible implementation manner, the first service is a voice service, and the second service is a data service.

[0417] The first bearer establishment device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of network devices 12 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0418] The first bearer establishment device provided in the embodiment of the present application can achieve Figures 4 to 8 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0419] The bearer establishment method provided in the embodiment of the present application may be executed by a second bearer establishment device. In the embodiment of the present application, the bearer establishment method executed by the second bearer establishment device is taken as an example to illustrate the second bearer establishment device provided in the embodiment of the present application.

[0420] Fig.16 FIG. 2 shows a possible structural diagram of a bearer establishment device involved in an embodiment of the present application, where the bearer establishment device is a second bearer establishment device. Fig.16 As shown, the second bearer establishing device 50 may include: a sending module 51.

[0421] The sending module 51 is used to send a first message to the first bearer establishment device, the first message is used to establish a bearer for transmitting the service data of the first service; and send an eighth message to the third bearer establishment device, or send a ninth message to the fifth bearer establishment device. The eighth message is used for any of the following: releasing resources corresponding to the first connection channel; deleting the first connection channel; the first connection channel is used to transmit the service data of the second service; the ninth message is used to indicate that the first connection channel cannot transmit the service data of the second service, and the first connection channel is used to transmit the service data of the second service.

[0422] An embodiment of the present application provides a bearer establishment device, which is a second bearer establishment device. Since the second bearer establishment device instructs the first bearer establishment device to establish a bearer for transmitting business data of the first business, it may cause the first connection channel to be unable to transmit business data of the second business. At this time, the second bearer establishment device can notify the third bearer establishment device to release the resources corresponding to the first connection channel and / or delete the first connection channel to avoid other bearer establishment devices using resources to transmit information through the first connection channel. Therefore, the resources occupied by transmitting information through the first connection channel can be saved to reduce the probability of a low rate of transmitting business data of the first business with other devices due to insufficient resources; or, the second bearer establishment device can notify the fifth bearer establishment device that the first connection channel cannot transmit business data of the second business. Therefore, the fifth bearer establishment device may not use resources to transmit information through the first connection channel. Therefore, the resources occupied by transmitting information through the first connection channel can be saved to reduce the probability of a low rate of transmitting business data of the first business with other devices due to insufficient resources; thereby, the efficiency of the fourth bearer establishment device in performing the first business with other devices can be improved, so as to improve the quality of communication between the fourth bearer establishment device and other devices.

[0423] In a possible implementation, the sending module 51 is specifically used for any of the following: when receiving the second message from the first bearer establishment device, sending the eighth message to the third bearer establishment device according to the second message; when receiving the tenth message from the fifth bearer establishment device, sending the eighth message to the third bearer establishment device according to the tenth message. The second message is used for any of the following: releasing resources corresponding to the first connection channel; deleting the first connection channel; and the tenth message is used to establish a bearer for transmitting service data of the first service.

[0424] In a possible implementation, the sending module 51 is also used to send a fourth message to the first bearer establishment device, and the fourth message is used to indicate any one of the following: releasing the connection between the first bearer establishment device and the second bearer establishment device 50; releasing the second connection channel; wherein the second connection channel is used to transmit business data of the first business.

[0425] In a possible implementation, the fourth message is used to indicate the release of the connection between the first bearer establishment device and the second bearer establishment device 50; the second bearer establishment device 50 provided in the embodiment of the present application further includes: a receiving module. The receiving module is used to receive an eleventh message from the third bearer establishment device, and the eleventh message is used to delete the second connection channel. The sending module 51 is specifically used to send the fourth message to the first bearer establishment device according to the eleventh message received by the receiving module.

[0426] In a possible implementation manner, the ninth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit service data of the second service.

[0427] In a possible implementation, the sending module 51 is specifically used for any of the following: in case of receiving a fifth message from a first bearer establishment device, sending a ninth message to a fifth bearer establishment device according to the fifth message; in case of receiving a tenth message from the fifth bearer establishment device, sending a ninth message to the fifth bearer establishment device according to the tenth message; in case of receiving a twelfth message from a fourth bearer establishment device, sending a ninth message to the fifth bearer establishment device according to the twelfth message; wherein the fifth message is used to indicate that the first connection channel cannot transmit service data of the second service; the tenth message is used to establish a bearer for transmitting service data of the first service; and the twelfth message is used to indicate that the first connection channel cannot transmit service data of the second service.

[0428] In a possible implementation, the fifth message is used to indicate that the state of the first connection channel is the third state, and the third state is used to characterize that the first connection channel cannot transmit business data of the second business; the twelfth message is used to indicate that the state of the first connection channel is the third state.

[0429] In a possible implementation, the sending module 51 is further configured to send a thirteenth message to the fifth bearer establishment device after sending the ninth message to the fifth bearer establishment device, where the thirteenth message is used to indicate that the first connection channel can transmit service data of the second service.

[0430] In a possible implementation manner, the thirteenth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit service data of the second service.

[0431] In a possible implementation, the sending module 51 is specifically used for any of the following: in a case where a sixth message is received from a first bearer establishment device, a thirteenth message is sent to a fifth bearer establishment device according to the sixth message; in a case where a fourteenth message is received from the fifth bearer establishment device, a thirteenth message is sent to the fifth bearer establishment device according to the fourteenth message; in a case where a fifteenth message is received from a fourth bearer establishment device, a thirteenth message is sent to the fifth bearer establishment device according to the fifteenth message; wherein the sixth message is used to indicate that the first connection channel can transmit service data of the second service; the fourteenth message is used to delete the second connection channel, which is used to transmit service data of the second service; and the fifteenth message is used to indicate that the first connection channel can transmit service data of the second service.

[0432] In a possible implementation, the sixth message is used to indicate that the state of the first connection channel is the fourth state, and the fourth state is used to characterize that the first connection channel can transmit business data of the second business; the fifteenth message is used to indicate that the state of the first connection channel is the fourth state.

[0433] In a possible implementation, the sending module 51 is further used to send a seventh message to the first bearer establishment device, the seventh message is used to indicate the deletion of the second connection channel, the second connection channel is used to transmit the service data of the second service. The seventh message is used to trigger the sending of second configuration information to the fourth bearer establishment device, the second configuration information is used for at least one of the following: releasing the second DRB and establishing the first DRB; modifying the configuration parameters corresponding to the first DRB; the first DRB after the configuration parameters are modified can be used to transmit the service data of the second service.

[0434] In a possible implementation, the first bearer establishing device is an access network device, and the second bearer establishing device 50 is an MME network element or an AMF network element.

[0435] In a possible implementation manner, the first service is a voice service, and the second service is a data service.

[0436] The second bearer establishment device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. For example, the terminal may include but is not limited to the types of network devices 12 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0437] The second bearer establishment device provided in the embodiment of the present application can achieve Fig. 9 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0438] The bearer establishment method provided in the embodiment of the present application may be executed by a fourth bearer establishment device. In the embodiment of the present application, the bearer establishment method executed by the fourth bearer establishment device is taken as an example to illustrate the fourth bearer establishment device provided in the embodiment of the present application.

[0439] Fig.17 A possible structural diagram of a bearer establishment device involved in an embodiment of the present application is shown, and the bearer establishment device is a fourth bearer establishment device. Fig.17 As shown, the fourth bearer establishing device 60 may include: a receiving module 61 and an executing module 62 .

[0440] The receiving module 61 is used to receive the first configuration information from the first bearer establishment device. The execution module 62 is used to execute at least one of the following according to the first configuration information received by the receiving module 61: release the first DRB between the first bearer establishment device and the fourth bearer establishment device 60, and establish the second DRB between the first bearer establishment device and the fourth bearer establishment device 60; modify the configuration parameters corresponding to the first DRB between the first bearer establishment device and the fourth bearer establishment device 60. The above-mentioned first DRB is used to transmit the service data of the second service, and the above-mentioned second DRB is used to transmit the service data of the first service. The first DRB after the configuration parameters are modified can be used to transmit the service data of the first service.

[0441] An embodiment of the present application provides a bearer establishment device, which is a fourth bearer establishment device. When the fourth bearer establishment device receives the first configuration information, it can release the first DRB established between the fourth bearer establishment device and the first bearer establishment device, and establish a second DRB. That is, the fourth bearer establishment device can first reduce the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device, and then establish the second DRB. That is, the fourth bearer establishment device can establish the second DRB while ensuring that the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device has not reached an upper limit, instead of directly establishing a new DRB for transmitting business data of the first business. Therefore, it can avoid the situation where the fourth bearer establishment device cannot establish the second DRB because the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device has reached an upper limit; and / or Because the fourth bearer establishment device can modify the configuration parameters corresponding to the first DRB established between the fourth bearer establishment device and the first bearer establishment device when receiving the first configuration information, so as to obtain the DRB for transmitting the service data of the first service, that is, the fourth bearer establishment device can modify the DRB for transmitting the service data of the first service without increasing the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device, instead of directly establishing a new DRB for transmitting the service data of the first service. Therefore, it can avoid the situation where the fourth bearer establishment device cannot establish the second DRB because the number of DRBs established between the fourth bearer establishment device and the first bearer establishment device reaches the upper limit; thereby, the probability of the fourth bearer establishment device being unable to communicate with other devices can be reduced. In this way, the quality of communication between the fourth bearer establishment device and other devices can be improved.

[0442] In a possible implementation, the receiving module 61 is further configured to receive a third message from the first bearer establishment device. The executing module 62 is further configured to release the RRC connection between the fourth bearer establishment device 60 and the first bearer establishment device according to the third message received by the receiving module 61.

[0443] In a possible implementation, the execution module 62 is further configured to establish an RRC connection between the fourth bearer establishment device 60 and the first bearer establishment device according to a sixteenth message when the RRC connection between the fourth bearer establishment device 60 and the first bearer establishment device is released. The sixteenth message includes at least one of the following: a service request message, a location update message, and a registration message.

[0444] In a possible implementation, the fourth bearer establishment device 60 provided in the embodiment of the present application may further include: a sending module, wherein the sending module is configured to send a twelfth message to the second bearer establishment device, the twelfth message being used to indicate that the first connection channel cannot transmit service data of the second service.

[0445] In a possible implementation manner, the twelfth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit service data of the second service.

[0446] In a possible implementation, the receiving module 61 is further used to receive second configuration information from the first bearer establishment device. The execution module 61 is further used to perform at least one of the following according to the second configuration information received by the receiving module 61: releasing the second DRB and establishing the first DRB; modifying the configuration parameters corresponding to the first DRB; wherein the first DRB after the configuration parameters are modified can be used to transmit the service data of the second service.

[0447] In a possible implementation, the fourth bearer establishment device 60 provided in the embodiment of the present application may further include: a sending module. The sending module is configured to send a fifteenth message to the second bearer establishment device after the receiving module 61 receives the second configuration information from the first bearer establishment device, the fifteenth message being used to indicate that the first connection channel can transmit service data of the second service.

[0448] In a possible implementation manner, the fifteenth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit service data of the second service.

[0449] In a possible implementation, the first network device is an access network device, and the second network device is an MME network element or an AMF network element.

[0450] In a possible implementation manner, the first service is a voice service, and the second service is a data service.

[0451] The fourth bearer establishment device in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices other than a terminal. Exemplarily, the terminal may include but is not limited to the types of the terminal 11 listed above, and other devices may be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiment of the present application.

[0452] The fourth bearer establishment device provided in the embodiment of the present application can achieve Fig.10 The various processes implemented by the method embodiment and achieving the same technical effect are not described here to avoid repetition.

[0453] like Fig.18 As shown, the embodiment of the present application further provides a communication device 80, including a processor 81 and a memory 82, and the memory 82 stores a program or instruction that can be run on the processor 81. For example, when the communication device 80 is a terminal, the program or instruction is executed by the processor 81 to implement the various steps of the bearer establishment method embodiment corresponding to the terminal side, and can achieve the same technical effect. When the communication device 80 is a network device, the program or instruction is executed by the processor 81 to implement the various steps of the method embodiment corresponding to the first network device side or the second network device side, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0454] The embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Fig.10 The steps in the method embodiment shown. This terminal embodiment corresponds to the above-mentioned terminal side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Fig.19 A schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present application.

[0455] The terminal 100 includes but is not limited to: a radio frequency unit 101, a network module 102, an audio output unit 103, an input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109 and at least some of the components of a processor 110.

[0456] Those skilled in the art will appreciate that the terminal 100 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 110 through a power management system, thereby implementing functions such as managing charging, discharging, and power consumption management through the power management system. Fig.19 The terminal structure shown in the figure does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange the components differently, which will not be described in detail here.

[0457] It should be understood that in the embodiment of the present application, the input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042, and the graphics processor 1041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 106 may include a display panel 1061, and the display panel 1061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 107 includes a touch panel 1071 and at least one of other input devices 1072. The touch panel 1071 is also called a touch screen. The touch panel 1071 may include two parts: a touch detection device and a touch controller. Other input devices 1072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control button, a switch button, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.

[0458] In the embodiment of the present application, after receiving downlink data from the network device, the RF unit 101 can transmit the data to the processor 110 for processing; in addition, the RF unit 101 can send uplink data to the network device. Generally, the RF unit 101 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0459] The memory 109 can be used to store software programs or instructions and various data. The memory 109 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc. In addition, the memory 109 may include a volatile memory or a non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM). The memory 109 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0460] The processor 110 may include one or more processing units; optionally, the processor 110 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 110.

[0461] The radio frequency unit 101 is used to receive first configuration information from a first network device.

[0462] The processor 110 is configured to perform at least one of the following according to the first configuration information:

[0463] Release a first DRB between the terminal and the first network device, and establish a second DRB between the terminal and the first network device;

[0464] Modify the configuration parameters corresponding to the first DRB between the terminal and the first network device.

[0465] Among them, the above-mentioned first DRB is used to transmit the business data of the second business, the above-mentioned second DRB is used to transmit the business data of the first business, and the first DRB after modifying the configuration parameters can be used to transmit the business data of the first business.

[0466] An embodiment of the present application provides a terminal. When the terminal receives the first configuration information, it can release the first DRB established between the terminal and the first network device and establish a second DRB. That is, the terminal can first reduce the number of DRBs established between the terminal and the first network device, and then establish the second DRB. That is, the terminal can establish the second DRB while ensuring that the number of DRBs established between the terminal and the first network device has not reached the upper limit, instead of directly establishing a new DRB for transmitting the business data of the first business. Therefore, it can avoid the situation where the terminal cannot establish the second DRB because the number of DRBs established between the terminal and the first network device has reached the upper limit; and / or, because the terminal receives the first configuration information, In the case of setting information, the configuration parameters corresponding to the first DRB established between the terminal and the first network device can be modified to obtain a DRB for transmitting the business data of the first business. That is, the terminal can modify the DRB for transmitting the business data of the first business without increasing the number of DRBs established between the terminal and the first network device, instead of directly establishing a new DRB for transmitting the business data of the first business. Therefore, it can avoid the situation where the terminal cannot establish a second DRB because the number of DRBs established between the terminal and the first network device reaches the upper limit; thereby, the probability of the terminal being unable to communicate with other devices can be reduced. In this way, the quality of communication between the terminal and other devices can be improved.

[0467] In some embodiments of the present application, the radio frequency unit 101 is further configured to receive a third message from the first network device.

[0468] The processor 110 is further configured to release the RRC connection between the terminal and the first network device according to the third message.

[0469] In some embodiments of the present application, the processor 110 is further configured to establish an RRC connection between the terminal and the first network device according to the sixteenth message when the RRC connection between the terminal and the first network device is released.

[0470] Among them, the above-mentioned sixteenth message includes at least one of the following: a service request message, a location update message, and a registration message.

[0471] In some embodiments of the present application, the radio frequency unit 101 is further used to send a twelfth message to the second network device, where the twelfth message is used to indicate that the first connection channel cannot transmit service data of the second service.

[0472] In some embodiments of the present application, the radio frequency unit 101 is further configured to receive second configuration information from the first network device.

[0473] The processor 110 is further configured to perform at least one of the following according to the second configuration information:

[0474] Release the second DRB and establish the first DRB;

[0475] Modify the configuration parameters corresponding to the first DRB.

[0476] Among them, the first DRB after the configuration parameters are modified can be used to transmit the business data of the second business.

[0477] In some embodiments of the present application, the radio frequency unit 101 is further used to send a fifteenth message to the second network device, where the fifteenth message is used to indicate that the first connection channel can transmit service data of the second service.

[0478] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the corresponding bearer establishment method on the terminal side in the method embodiment, and achieve the same or corresponding technical effect. To avoid repetition, it will not be repeated here.

[0479] The embodiment of the present application also provides a network device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the following Fig. 9 or Fig.10 The steps of the method embodiment shown. This network device embodiment corresponds to the above network device method embodiment, and each implementation process and implementation mode of the above method embodiment can be applied to this network device embodiment and can achieve the same technical effect.

[0480] Specifically, the embodiment of the present application also provides a network device. Fig. 20 As shown, the network device 200 includes: an antenna 201, a radio frequency device 202, a baseband device 203, a processor 204 and a memory 205. The antenna 201 is connected to the radio frequency device 202. In the uplink direction, the radio frequency device 202 receives information through the antenna 201 and sends the received information to the baseband device 203 for processing. In the downlink direction, the baseband device 203 processes the information to be sent and sends it to the radio frequency device 202, and the radio frequency device 202 processes the received information and sends it out through the antenna 201.

[0481] The method executed by the network device in the above embodiment may be implemented in the baseband device 203, which includes a baseband processor.

[0482] The baseband device 203 may include, for example, at least one baseband board on which a plurality of chips are arranged. Fig. 20 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 205 through a bus interface to call the program in the memory 205 to execute the network device operations shown in the above method embodiment.

[0483] The network device may further include a network interface 206, which is, for example, a Common Public Radio Interface (CPRI).

[0484] Specifically, the network device 200 of the embodiment of the present invention further includes: instructions or programs stored in the memory 205 and executable on the processor 204, and the processor 204 calls the instructions or programs in the memory 205 to execute. Fig.15 or Fig.16 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0485] Specifically, the embodiment of the present application also provides a network device. Fig.21 As shown, the network device 300 includes: a processor 301, a network interface 302 and a memory 303. The network interface 302 is, for example, a common public radio interface (CPRI).

[0486] Specifically, the network device 300 of the embodiment of the present invention further includes: an instruction or program stored in the memory 303 and executable on the processor 301, and the processor 301 calls the instruction or program in the memory 303 to execute. Fig.15 or Fig.16 The methods executed by the modules shown achieve the same technical effects, and therefore will not be described here in detail to avoid repetition.

[0487] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned bearer establishment method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0488] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0489] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned bearer establishment method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0490] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0491] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned bearer establishment method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0492] An embodiment of the present application also provides a wireless communication system, including: a terminal and a network device, wherein the terminal can be used to execute the steps of the bearer establishment method corresponding to the terminal side as described above, and the network device can be used to execute the steps of the bearer establishment method corresponding to the first network device side or the second network device side as described above.

[0493] It should be noted that, in this article, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0494] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, disk, CD, etc.), including several instructions to enable a terminal or network device to execute the methods described in each embodiment of the present application.

[0495] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of the present application and the scope of protection of the claims, and these implementation methods are all within the protection of the present application.

Claims

1. A bearer establishment method, characterized in that: include: The first network device receives a first message from the second network device, where the first message is used to establish a bearer for transmitting service data of the first service; The first network device sends first configuration information to the terminal according to the first message, where the first configuration information is used for at least one of the following: Release a first DRB between the terminal and the first network device, and establish a second DRB between the terminal and the first network device; Modify the configuration parameters corresponding to the first DRB between the terminal and the first network device; Among them, the first DRB is used to transmit the business data of the second business, the second DRB is used to transmit the business data of the first business, and the first DRB after modifying the configuration parameters can be used to transmit the business data of the first business.

2. The method according to claim 1, characterized in that The method further comprises: The first network device sends a second message to the second network device, where the second message is used for any of the following: Release the resources corresponding to the first connection channel; Deleting the first connection channel; The first connection channel is used to transmit the service data of the second service.

3. The method according to claim 1, characterized in that The method further comprises: The first network device sends a third message to the terminal, where the third message is used to release a radio resource control RRC connection between the terminal and the first network device.

4. The method according to claim 3, characterized in that The method further comprises: The first network device receives a fourth message from the second network device; The first network device sending a third message to the terminal includes: The first network device sends the third message to the terminal according to the fourth message; The fourth message is used to indicate any of the following: releasing the connection between the first network device and the second network device; releasing the second connection channel; The second connection channel is used to transmit the service data of the first service.

5. The method according to claim 1, characterized in that The method further comprises: In the case where the first network device receives service data through the first connection channel, the first network device discards the received service data, and the first connection channel is used to transmit the service data of the second service.

6. The method according to claim 5, characterized in that The method further comprises: The first network device marks the state of the first connection channel as a first state, where the first state is used to indicate that the first connection channel cannot transmit service data of the second service.

7. The method according to claim 6, characterized in that After the first network device marks the state of the first connection channel as a first state, the method further includes: The first network device marks the state of the first connection channel as a second state, where the second state is used to indicate that the first connection channel can transmit service data of the second service.

8. The method according to claim 1, characterized in that The method further comprises: The first network device sends a fifth message to the second network device, where the fifth message is used to indicate that the first connection channel cannot transmit service data of the second service; The first connection channel is used to transmit the service data of the second service.

9. The method according to claim 8, characterized in that The fifth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit the service data of the second service.

10. The method according to claim 8, characterized in that After the first network device sends the fifth message to the second network device, the method further includes: The first network device sends a sixth message to the second network device, where the sixth message is used to indicate that the first connection channel can transmit service data of the second service.

11. The method according to claim 10, characterized in that The sixth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit the service data of the second service.

12. The method according to any one of claims 5 to 11, characterized in that The method further comprises: The first network device receives a seventh message from the second network device, where the seventh message is used to instruct deletion of a second connection channel, where the second connection channel is used to transmit service data of the second service; The first network device sends second configuration information to the terminal according to the seventh message, where the second configuration information is used for at least one of the following: Release the second DRB and establish the first DRB; Modify the configuration parameters corresponding to the first DRB; Among them, the first DRB after modifying the configuration parameters can be used to transmit the business data of the second business.

13. The method according to any one of claims 1 to 12, characterized in that The first network device is an access network device, and the second network device is a mobility management entity MME network element or an access and mobility management function AMF network element.

14. The method according to any one of claims 1 to 13, characterized in that The first service is a voice service, and the second service is a data service.

15. A bearer establishment method, characterized in that: include: The second network device sends a first message to the first network device, where the first message is used to establish a bearer for transmitting service data of the first service; The second network device sends an eighth message to the third network device, or the second network device sends a ninth message to the fourth network device; The eighth message is used for any of the following: Release the resources corresponding to the first connection channel; Deleting the first connection channel; The first connection channel is used to transmit service data of the second service; The ninth message is used to indicate that the first connection channel cannot transmit the service data of the second service, and the first connection channel is used to transmit the service data of the second service.

16. The method according to claim 15, characterized in that The second network device sends an eighth message to the third network device, including any one of the following: In case of receiving the second message from the first network device, the second network device sends the eighth message to the third network device according to the second message; In case of receiving the tenth message from the fourth network device, the second network device sends the eighth message to the third network device according to the tenth message; The second message is used for any of the following: releasing resources corresponding to the first connection channel; Deleting the first connection channel; The tenth message is used to establish a bearer for transmitting service data of the first service.

17. The method according to claim 15, characterized in that The method further comprises: The second network device sends a fourth message to the first network device, where the fourth message is used to indicate any one of the following: releasing the connection between the first network device and the second network device; releasing the second connection channel; The second connection channel is used to transmit the service data of the first service.

18. The method according to claim 17, characterized in that The fourth message is used to instruct to release the connection between the first network device and the second network device; the method further includes: The second network device receives an eleventh message from the third network device, where the eleventh message is used to delete the second connection channel; The second network device sending a fourth message to the first network device includes: The second network device sends the fourth message to the first network device according to the eleventh message.

19. The method according to claim 15, characterized in that The ninth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit the service data of the second service.

20. The method according to claim 15, characterized in that The second network device sends a ninth message to the fourth network device, including any one of the following: In case of receiving the fifth message from the first network device, the second network device sends the ninth message to the fourth network device according to the fifth message; In case of receiving the tenth message from the fourth network device, the second network device sends the ninth message to the fourth network device according to the tenth message; In case the twelfth message is received from the terminal, the second network device sends the ninth message to the fourth network device according to the twelfth message; Among them, the fifth message is used to indicate that the first connection channel cannot transmit the service data of the second service; the tenth message is used to establish a bearer for transmitting the service data of the first service; and the twelfth message is used to indicate that the first connection channel cannot transmit the service data of the second service.

21. The method according to claim 20, characterized in that The fifth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit the service data of the second service; The twelfth message is used to indicate that the state of the first connection channel is the third state.

22. The method according to claim 15, characterized in that After the second network device sends the ninth message to the fourth network device, the method further includes: The second network device sends a thirteenth message to the fourth network device, where the thirteenth message is used to indicate that the first connection channel can transmit service data of the second service.

23. The method according to claim 22, characterized in that The thirteenth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit the service data of the second service.

24. The method according to claim 22, characterized in that The second network device sends a thirteenth message to the fourth network device, including any one of the following: In case of receiving the sixth message from the first network device, the second network device sends the thirteenth message to the fourth network device according to the sixth message; In case that the fourteenth message is received from the fourth network device, the second network device sends the thirteenth message to the fourth network device according to the fourteenth message; In case the fifteenth message is received from the terminal, the second network device sends the thirteenth message to the fourth network device according to the fifteenth message; Among them, the sixth message is used to indicate that the first connection channel can transmit the business data of the second business; the fourteenth message is used to delete the second connection channel, and the second connection channel is used to transmit the business data of the second business; the fifteenth message is used to indicate that the first connection channel can transmit the business data of the second business.

25. The method according to claim 24, characterized in that The sixth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit the service data of the second service; The fifteenth message is used to indicate that the state of the first connection channel is the fourth state.

26. The method according to any one of claims 15 to 25, characterized in that The method further comprises: The second network device sends a seventh message to the first network device, where the seventh message is used to instruct deletion of a second connection channel, where the second connection channel is used to transmit service data of the second service; The seventh message is used to trigger sending second configuration information to the terminal, and the second configuration information is used for at least one of the following: Release the second DRB and establish the first DRB; Modify the configuration parameters corresponding to the first DRB; The first DRB after modifying the configuration parameters can be used to transmit the service data of the second service.

27. The method according to any one of claims 15 to 26, characterized in that The first network device is an access network device, and the second network device is an MME network element or an AMF network element.

28. The method according to any one of claims 15 to 27, characterized in that The first service is a voice service, and the second service is a data service.

29. A bearer establishment method, characterized in that: include: The terminal receives first configuration information from the first network device; The terminal performs at least one of the following according to the first configuration information: Release a first DRB between the terminal and the first network device, and establish a second DRB between the terminal and the first network device; Modify the configuration parameters corresponding to the first DRB between the terminal and the first network device; Among them, the first DRB is used to transmit the business data of the second business, the second DRB is used to transmit the business data of the first business, and the first DRB after modifying the configuration parameters can be used to transmit the business data of the first business.

30. The method according to claim 29, characterized in that The method further comprises: The terminal receives a third message from the first network device; The terminal releases the RRC connection between the terminal and the first network device according to the third message.

31. The method according to claim 29, characterized in that The method further comprises: When the RRC connection between the terminal and the first network device is released, the terminal establishes the RRC connection between the terminal and the first network device according to the sixteenth message; The sixteenth message includes at least one of the following: a service request message, a location update message, and a registration message.

32. The method according to claim 29, characterized in that The method further comprises: The terminal sends a twelfth message to the second network device, where the twelfth message is used to indicate that the first connection channel cannot transmit service data of the second service.

33. The method according to claim 32, characterized in that The twelfth message is used to indicate that the state of the first connection channel is a third state, and the third state is used to represent that the first connection channel cannot transmit the service data of the second service.

34. The method according to claim 29, characterized in that The method further comprises: The terminal receives second configuration information from the first network device; The terminal performs at least one of the following according to the second configuration information: Release the second DRB and establish the first DRB; Modify the configuration parameters corresponding to the first DRB; Among them, the first DRB after modifying the configuration parameters can be used to transmit the business data of the second business.

35. The method according to claim 34, characterized in that After the terminal receives second configuration information from the first network device, the method further includes: The terminal sends a fifteenth message to the second network device, where the fifteenth message is used to indicate that the first connection channel can transmit service data of the second service.

36. The method according to claim 35, characterized in that The fifteenth message is used to indicate that the state of the first connection channel is a fourth state, and the fourth state is used to represent that the first connection channel can transmit the service data of the second service.

37. The method according to claim 32 or 35, characterized in that The first network device is an access network device, and the second network device is an MME network element or an AMF network element.

38. The method according to any one of claims 29 to 37, characterized in that The first service is a voice service, and the second service is a data service.

39. A bearer establishment device, the bearer establishment device being a first bearer establishment device, characterized in that: The first bearer establishment device includes: a receiving module and a sending module; The receiving module is used to receive a first message from the second bearer establishment device, where the first message is used to establish a bearer for transmitting service data of the first service; The sending module is configured to send first configuration information to the fourth bearer establishment device according to the first message received by the receiving module, where the first configuration information is used for at least one of the following: releasing a first DRB between the first bearer establishing device and the fourth bearer establishing device, and establishing a second DRB between the first bearer establishing device and the fourth bearer establishing device; Modify configuration parameters corresponding to the first DRB between the first bearer establishment device and the fourth bearer establishment device; Among them, the first DRB is used to transmit the business data of the second business, the second DRB is used to transmit the business data of the first business, and the first DRB after modifying the configuration parameters can be used to transmit the business data of the first business.

40. A bearer establishment device, the bearer establishment device being a second bearer establishment device, characterized in that: The second bearer establishing device comprises: a sending module; The sending module is used to send a first message to the first bearer establishment device, where the first message is used to establish a bearer for transmitting service data of the first service; and send an eighth message to the third bearer establishment device, or send a ninth message to the fifth bearer establishment device; The eighth message is used for any of the following: Release the resources corresponding to the first connection channel; Deleting the first connection channel; The first connection channel is used to transmit service data of the second service; The ninth message is used to indicate that the first connection channel cannot transmit the service data of the second service, and the first connection channel is used to transmit the service data of the second service.

41. A bearer establishment device, the bearer establishment device being a fourth bearer establishment device, characterized in that: The fourth bearer establishment device includes: a receiving module and an execution module; The receiving module is used to receive first configuration information from a first bearer establishment device; The execution module is configured to execute at least one of the following according to the first configuration information received by the receiving module: releasing a first DRB between the first bearer establishing device and the fourth bearer establishing device, and establishing a second DRB between the first bearer establishing device and the fourth bearer establishing device; Modify configuration parameters corresponding to the first DRB between the first bearer establishment device and the fourth bearer establishment device; Among them, the first DRB is used to transmit the business data of the second business, the second DRB is used to transmit the business data of the first business, and the first DRB after modifying the configuration parameters can be used to transmit the business data of the first business.

42. A network device, characterized in that: It includes a processor and a memory, the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the bearer establishment method as described in any one of claims 1 to 28 are implemented.

43. A terminal, characterized in that: The method comprises a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the bearer establishment method as described in any one of claims 29 to 38 are implemented.

44. A readable storage medium, characterized in that The readable storage medium stores a program or instruction, and when the program or instruction is executed by the processor, it implements the bearer establishment method as described in any one of claims 1 to 28, or implements the steps of the bearer establishment method as described in any one of claims 29 to 38.

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