CN117812651A

CN117812651A - Communication processing method and device, first core network equipment and third core network equipment

Info

Publication number: CN117812651A
Application number: CN202211230079.8A
Authority: CN
Inventors: 崇卫微; 金辉
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-09-26
Filing date: 2022-10-09
Publication date: 2024-04-02

Abstract

The application discloses a communication processing method, a device, a first core network device and a third core network device, which belong to the technical field of communication, and the communication processing method in the embodiment of the application comprises the following steps: the first core network equipment receives a first message; the first core network device judges whether the QoS parameters of the service quality included in the first message are matched with the QoS parameters supported by the roaming network; in the case that the QoS parameters included in the first message are not matched with the QoS parameters supported by the roaming network, the first core network device sends a second message, where the second message includes target parameters, and the target parameters include at least one of the following: qoS parameters supported by the first system network; the smaller value of QoS parameters supported by the first system network and the second system network; the first system network or the second system network is contained in the roaming area network, and the second system network is higher than or better than the first system network.

Description

Communication processing method and device, first core network equipment and third core network equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a communication processing method and device, a first core network device and a third core network device.

Background

The different operators support different cases for voice, for example, the guaranteed Bit Rate (Guaranteed Bit Rate, GBR) or the Maximum Bit Rate (Maximum Bit Rate, MBR) of voice supported by the operator A, B, C is 64kbps,156kbps,512kbps:

the GBR upper limit value used by the mobile network operator (mobile network operator, MNO) a is equal to 64kbps;

the upper limit of GBR used by MNO B is equal to 156kbps;

the upper limit of GBR used by MNO C is equal to 512kbps.

For example, when a terminal of MNO C (e.g., user Equipment (UE)) roams to MNO a, the terminal initiates an IP multimedia subsystem (IP Multimedia Subsystem, IMS) session request according to the stored MNO C configuration, and establishes a voice bearer with GBR of 512kbps. Specifically, session description information (Session Description Protocol, SDP) information is carried in a session initiation protocol (Session Initiation Protocol, SIP) invite (invite) message, and the SDP information includes information using 512kbps GBR parameters.

When the MNO establishes a voice bearer according to the negotiation result of the IMS layer, since the MNO only supports the voice bearer establishment with the GBR upper limit of 64kbps, the voice bearer establishment request is rejected by the core network mobility management entity (Mobility Management Entity, MME) of the fourth generation mobile communication technology (4th Generation Mobile Communication Technology,4G)/fifth generation mobile communication technology (5th Generation Mobile Communication Technology,5G) or the session management function (Visited Session Management Function, V-SMF) of the roaming network, which results in a voice bearer establishment failure, and the user cannot use voice service in the roaming area.

In the related art, if the V-SMF rejects the voice bearer establishment request and feeds back the roaming network public land mobile network (Visited Public Land Mobile Network, HPLMN) VPLMN 5G quality of service (Quality of Service, qoS) (e.g., 128 kbps) to the home network public land mobile network (Home Public Land Mobile Network, HPLMN), the Proxy call session control function (Proxy-Call Session Control Function, P-CSCF) feeds back the VPLMN 5G QoS to the terminal, which re-initiates the call based on the VPLMN 5G QoS. In this case, the call re-initiated by the terminal falls back to the VPLMN4G network according to the evolved packet system (Evolved Packet System, EPS) fallback (fallback) procedure, but if the VPLMN4G QoS is actually smaller than the VPLMN 5G QoS, for example, the 4G GBR upper limit is smaller than the 5G GBR upper limit, the MME rejects the call again, which may cause the call to fail, or cause the call to be re-negotiated with parameters again, so that the delay of the whole call procedure is too large and the service experience is poor.

Disclosure of Invention

The embodiment of the application provides a communication processing method, a device, a first core network device and a third core network device, which can solve the problem of how to establish a bearing for a user in a roaming place.

In a first aspect, a communication processing method is provided, the method including:

the method comprises the steps that first core network equipment receives a first message, wherein the first message is used for requesting a roaming network of a terminal to establish a first bearing;

the first core network device judges whether the QoS parameters of the quality of service (QoS) included in the first message are matched with the QoS parameters supported by the roaming area network;

in the case that the QoS parameters included in the first message do not match with the QoS parameters supported by the roaming network, the first core network device sends a second message, where the second message includes a target parameter, and the target parameter includes at least one of the following:

QoS parameters supported by the first system network;

the smaller value of QoS parameters supported by the first system network and the second system network;

the first system network or the second system network is contained in the roaming place network, and the second system network is higher than or better than the first system network.

In a second aspect, there is provided a communication processing apparatus comprising:

the first receiving module is used for receiving a first message, wherein the first message is used for requesting a roaming network of the terminal to establish a first bearing;

A judging module, configured to judge whether a QoS parameter of quality of service included in the first message matches a QoS parameter supported by the roaming network;

a first sending module, configured to send a second message, where the QoS parameter included in the first message does not match the QoS parameter supported by the roaming network, and the second message includes a target parameter, where the target parameter includes at least one of the following:

QoS parameters supported by the first system network;

In a third aspect, a communication processing method is provided, the method including:

the third core network equipment receives a fourth message, wherein the fourth message is used for requesting to initiate session establishment or modification for the terminal in the roaming network;

the third core network device sends a third message to the first core network device, the third message including the target parameter,

the target parameters include at least one of:

quality of service (QoS) parameters supported by the first system network;

In a fourth aspect, there is provided a communication processing apparatus comprising:

the second receiving module is used for receiving a fourth message, and the fourth message is used for requesting to initiate session establishment or modification for the terminal in the roaming network;

a second sending module, configured to send a third message to the first core network device, where the third message includes a target parameter,

the target parameters include at least one of:

quality of service (QoS) parameters supported by the first system network;

In a fifth aspect, there is provided a first core network device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the communication processing method according to the first aspect.

In a sixth aspect, a first core network device is provided, including a processor and a network interface, where: the network interface is configured to receive a first message, where the first message is used to request a roaming network of a terminal to establish a first bearer; the processor is configured to determine whether a QoS parameter included in the first message matches a QoS parameter supported by the roaming network, and send a second message when the QoS parameter included in the first message does not match the QoS parameter supported by the roaming network, where the second message includes a target parameter, and the target parameter includes at least one of the following: qoS parameters supported by the first system network; the smaller value of QoS parameters supported by the first system network and the second system network; the first system network or the second system network is contained in the roaming place network, and the second system network is higher than or better than the first system network.

In a seventh aspect, a third core network device is provided, the second core network device comprising a processor and a memory storing a program or instructions executable on the processor, which program or instructions when executed by the processor implement the steps of the communication processing method according to the third aspect.

An eighth aspect provides a third core network device, including a processor and a network interface, wherein: the network interface is configured to receive a fourth message, where the fourth message is used to request to initiate session establishment or modification for the terminal in the roaming network; transmitting a third message to the first core network device, wherein the third message comprises target parameters, and the target parameters comprise at least one of the following: quality of service (QoS) parameters supported by the first system network; the smaller value of QoS parameters supported by the first system network and the second system network; the first system network or the second system network is contained in the roaming place network, and the second system network is higher than or better than the first system network.

In a ninth aspect, there is provided a communication processing system comprising: a first core network device operable to perform the steps of the communication processing method according to the first aspect, and a third core network device operable to perform the steps of the communication processing method according to the third aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect, or performs the steps of the method according to the third aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being configured to execute a program or instructions, implement the communication processing method according to the first aspect, or implement the communication processing method according to the third aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the communication processing method as described in the first aspect, or to implement the communication processing method as described in the third aspect.

In the embodiment of the present application, when the QoS parameter included in the first message for requesting the roaming network to establish the first bearer for the terminal is not matched with the QoS parameter supported by the roaming network, the first core network device renegotiates the parameter by sending the QoS parameter including the target parameter, and in addition, because the target parameter includes the QoS parameter supported by the first standard network of the roaming network and/or a smaller value in the QoS parameter supported by the first standard network and the QoS parameter supported by the second standard network, the second standard network is higher than or better than the first standard network, so that the QoS parameter supported by the first standard network or the QoS parameter supported by the first standard network and the QoS parameter supported by the second standard network can be directly renegotiated into the QoS parameter supported by the first standard network or the QoS parameter supported by the first standard network and the QoS parameter supported by the second standard network, multiple renegotiations that may occur can be avoided, the call delay of the roaming user is shortened as much as possible, and the user experience is further successfully established for the user in roaming.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a schematic diagram of a prior art method for establishing a voice bearer between UE-1 and UE-2;

fig. 3 is a schematic flow chart of a communication processing method according to an embodiment of the present application;

FIG. 4 is a second flow chart of a communication processing method according to the embodiment of the present application;

fig. 5 is a schematic flow chart of establishing a voice bearer between UE-1 and UE-2 according to an embodiment of the present application;

FIG. 6 is a second flow chart of establishing a voice bearer between UE-1 and UE-2 according to the embodiment of the present application;

FIG. 7 is a third flow chart for establishing a voice bearer between UE-1 and UE-2 according to the embodiment of the present application;

fig. 8 is one of schematic structural diagrams of a communication processing apparatus according to an embodiment of the present application;

FIG. 9 is a second schematic diagram of a communication processing apparatus according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of a communication device provided in an embodiment of the present application;

fig. 11 is a schematic structural diagram of a core network device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (tdm)Address (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single-carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc..

Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

In order to facilitate a clearer understanding of the technical solutions provided in the embodiments of the present application, some relevant background knowledge is first described below.

Referring to fig. 2, fig. 2 is a schematic diagram of a prior art UE-1 and UE-2 establishing a voice bearer. In fig. 2, a flow of establishing a voice bearer between UE-1 and UE-2 is illustrated, where UE-1 and UE-2 make a voice call in a scenario of roaming to VPLMN, and if VPLMN performs voice service through EPS fallback technology, and VPLMN can support QoS parameters (such as requested GBR parameters or negotiated GBR parameters) of UE-1 and UE-2 after negotiation in IMS layer, specific steps are as follows:

step 1: UE-1 establishes a protocol data unit (Protocol Data Unit, PDU) session over V-SMF in a roaming network, e.g., MNO a.

Step 2: the UE-1 initiates an IMS establishment request, initiates the IMS establishment request through a SIP invite message, carries the information of the voice media to be established in the SDP of the IMS establishment request, and requests to establish the voice bearer with GBR of 512kbps through b=application server (Application Server, AS) 512.

Step 3: the P-CSCF sends a hypertext transfer protocol (Hyper Text Transfer Protocol, HTTP) notification (POST) Request (Request) to the PCF that serves UE-1, carrying media description information (media info) negotiated by SDP, derived from an SDP answer (answer) message, containing information that requires the use of 512 kbps.

Step 4: the PCF initiates a request to establish a voice bearer to a session management function (Home Session Management Function, H-SMF) of the home network of UE-1 (e.g., the PCF initiates SM policy association modification), and the request carries QoS parameters of the voice bearer to be established, which includes information that GBR is 512 kbps.

Step 5: the H-SMF sends a PDU session Update Request (e.g., nsmf_PDUSion_Update Request) to the V-SMF, where the PDU session Update Request contains the QoS parameters of the voice bearer to be established.

Step 6: the V-SMF sends a request message (e.g., namf communication N1N2message transfer message) to the AMF, the request message including QoS parameters of the voice bearer to be established.

Step 7: the AMF sends an N2 session message to the base station (the next Generation Node B, gNB) requesting the establishment of a voice bearer (5G QoS Identifier, 5 QI) =1 QoS flow (flow).

Step 8: and if the gNB judges that the VPLMN does not support the new air interface carrying voice (Voice over New Radio, voNR) and only supports EPS fallback, triggering voice service to fall back to the 4G network flow. Specifically, the gNB denies the establishment of the voice bearer (5q1=1 QoS flow), and indicates to the AMF that the reason for the denial is that the voice traffic fallback operation needs to be performed.

Step 9: the gNB triggers a handover or redirection procedure to handover or redirect the UE-1 to the VPLMN 4G cell.

Step 10: after the H-SMF/packet data network gateway control plane (PDN Gateway Control, PGW-C) determines that the fallback procedure is finished (i.e. UE-1 accesses the 4G network), it triggers to reestablish the voice bearer in the 4G network (QoS class identifier (QoS Class Identifier, QCI) =1 bearer), which includes QoS parameters of the voice bearer requested to be established.

Step 11: a Serving Gateway (SGW) sends a voice bearer (qci=1 bearer) establishment request to the MME, including QoS parameters of the voice bearer that is requested to be established.

Step 12: the MME sends a voice bearer (qci=1 bearer (bearer)) establishment request to a base station (evolved Node B, eNB), which contains parameters of the voice bearer that is requested to be established.

Step 13: the eNB sends a radio resource control (Radio Resource Control, RRC) connection reconfiguration message to the UE-1 for requesting establishment of a voice bearer.

Step 14-18: and each node sends a response message for establishing the bearing to the uplink node.

Step 19: the P-CSCF sends the invite message received in step 2 to the UE-2 through a service session control function (Serving Call Session Control Function, S-CSCF).

It should be noted that, both the P-CSCF and the S-CSCF in fig. 2 are IMS network elements that provide services for UE-1, and the IMS network elements that provide services for UE-2 are not embodied.

Step 20: UE-2 replies to the 183 message through the S-CSCF, including SDP answer in the 183 message.

Step 21-22: UE2 replies to UE1 with a 200OK message.

Thus, a voice call may be made between UE-1 and UE-2.

In the flow shown in fig. 2, when the UE-1 is in the roaming state, if the parameters of the voice bearers supported by the home network and the roaming network are inconsistent, the flow cannot be successfully completed, and the MME or the V-SMF may reject the voice bearer establishment request, thereby causing a voice bearer establishment failure, and causing that the user cannot use the voice service in the roaming place. If the V-SMF rejects the voice bearer setup request and feeds back the roaming network public land mobile network (Visited Public Land Mobile Network, HPLMN) VPLMN 5G quality of service (Quality of Service, qoS) (e.g., 128 kbps) to the home network public land mobile network (Home Public Land Mobile Network, HPLMN), the Proxy call session control function (Proxy-Call Session Control Function, P-CSCF) feeds back the VPLMN 5G QoS to the terminal, which re-initiates the call based on the VPLMN 5G QoS. In this case, the call re-initiated by the terminal falls back to the VPLMN 4G network according to the evolved packet system (Evolved Packet System, EPS) fallback (fallback) procedure, but if the VPLMN 4G QoS is actually smaller than the VPLMN 5G QoS, for example, the 4G GBR upper limit is smaller than the 5G GBR upper limit, the MME rejects the call again, which may cause the call to fail, or cause the call to be re-negotiated with parameters again, so that the delay of the whole call procedure is too large and the service experience is poor.

Therefore, how to set up bearers for users roaming is a problem to be solved.

The method, the device, the core network device and the readable storage medium for communication processing provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through some embodiments and application scenarios thereof.

Fig. 3 is one of flow diagrams of a communication processing method according to an embodiment of the present application, as shown in fig. 3, the method includes steps 301 to 203; wherein:

step 301: the first core network device receives a first message, where the first message is used to request a roaming network of the terminal to establish a first bearer.

Optionally, the first core network device may include at least one of: mobility management functions of the roaming destination network, such as V-MME; session management functions of the roaming network, such as V-SMF.

In case the first core network device comprises a V-MME/V-SMF, the first core network device may receive the first message from a session management function of the home network, such as H-SMF, or a packet data network gateway of the home network, such as H-PGW-C.

In another possible implementation manner of the embodiment of the present application, the first core network device includes at least one of the following: a) A session management function H-SMF of the home network; b) A packet data network gateway of the home network, such as a packet data network gateway control plane (Home Packet Data Network Gateway Control, H-PGW-C) of the home network.

In case the first core network device comprises an H-SMF/H-PGW-C, the first core network device may receive the first message from a policy control function (Home Policy Control Function, H-PCF) of the home network.

In yet another possible implementation of an embodiment of the present application, the first core network device includes a policy control function of the home network, such as an H-PCF.

In case the first core network device comprises an H-PCF, the first core network device may receive the first message from a proxy call session control function, e.g. a P-CSCF, or a serving call session control function, e.g. an S-CSCF.

It should be noted that, the first message may be referred to as a PDU session update request message, a bearer establishment request message, or an HTTP POST request message, where the message may carry a parameter of the first bearer; roaming networks may also be referred to as visited networks.

Optionally, the first core network device determines that the first bearer is at least one of a voice service bearer and a video service bearer. That is, the first bearer may include at least one of a voice bearer and a video bearer, for example, the first bearer may be a voice traffic media plane bearer, and the corresponding qci=1 (4G) or 5qi=1 (5G).

Step 302: the first core network device determines whether a quality of service QoS parameter included in the first message matches a QoS parameter supported by the roaming network.

In this embodiment, if the QoS parameter included in the first message matches the QoS parameter supported by the roaming network, it indicates that the roaming network accepts the first message, and establishes a first bearer for the terminal in the roaming network;

if the QoS parameters included in the first message do not match the QoS parameters supported by the roaming network, it indicates that the roaming network cannot meet the QoS parameters included in the first message, i.e. the roaming network rejects the first message.

Optionally, the QoS parameters include at least one of: GBR; MBR.

In case the QoS parameters comprise GBR in particular, the roaming network supported QoS parameters comprise GBR upper limit supported by the roaming network in particular.

Step 303: in the case that the QoS parameters included in the first message do not match with the QoS parameters supported by the roaming network, the first core network device sends a second message, where the second message includes a target parameter, and the target parameter includes at least one of the following: qoS parameters supported by the first system network; the smaller value of QoS parameters supported by the first system network and the second system network; the first system network or the second system network is contained in the roaming place network, and the second system network is higher than or better than the first system network.

It should be noted that, preferably, in the present application, the first core network device determines whether the QoS parameter included in the first message matches the QoS parameter supported by the roaming network or not is for the first bearer; preferably, the first core network device sends the target parameter also for the first bearer. In other words, the QoS parameters supported by the roaming network in the embodiments of the present application refer to QoS parameters supported by the roaming network for the first bearer (e.g., the voice service bearer).

In this embodiment, in the case that the QoS parameter included in the first message does not match the QoS parameter supported by the roaming network, it indicates that the roaming network rejects the first message; in this case, the first core network device sends a second message comprising the target parameters.

Optionally, the second message is used to refuse to establish the first bearer for the terminal in the roaming network.

It should be noted that, the first message may be received by the first core network device during the process that the terminal falls back from the second system network to the first system network.

The first and second networks are distinguished by different radio access technologies (Radio Access technology, RATs), the RATs of the first and second networks being different; and, the first system network or the second system network is included in the roaming place network, and the second system network (such as 5G network) is higher than or better than the first system network (such as 4G network).

The QoS parameters supported by the first standard network refer to 4G QoS parameters supported by a roaming network VPLMN; for example, 4G GBR and/or MBR, with the example that the 4G QoS parameter is GBR, VPLMN 4G GBR upper limit = 64Kbps.

The smaller value in the QoS parameters supported by the first standard network and the second standard network refers to the smaller value in the 4G QoS and the 5G QoS supported by the roaming network VPLMN; for example Min (4 g GBR,5g GBR), and/or Min (4 g MBR,5g MBR).

In the communication processing method provided by the embodiment of the present application, when the QoS parameter included in the first message for requesting the roaming network to establish the first bearer for the terminal is not matched with the QoS parameter supported by the roaming network, the first core network device renegotiates the parameter by sending the message including the target parameter, and in addition, because the target parameter includes the QoS parameter supported by the first standard network of the roaming network and/or a smaller value in the QoS parameter supported by the first standard network and the QoS parameter supported by the second standard network, the second standard network is higher than or better than the first standard network, which can directly feed back the QoS parameter supported by the first standard network or the smaller value in the QoS parameter supported by the first standard network and the QoS parameter supported by the second standard network, so that the call parameter can be renegotiated directly into the QoS parameter supported by the first standard network or the smaller value in the QoS parameter supported by the first standard network and the second standard network, multiple renegotiations that may occur can be avoided, the call delay of the roaming user is shortened as much as possible, and the bearer can be successfully established for the user in the roaming network, and the user experience is improved.

Optionally, the second message includes reject cause information, where the reject cause information indicates that the roaming network cannot meet the QoS parameters included in the first message.

Optionally, the first core network device determines whether the QoS parameters of the quality of service included in the first message match QoS parameters supported by the roaming network, which may be implemented by at least one of the following ways:

in mode 1, the first core network device determines whether the QoS parameters supported by the first standard network are matched with the QoS parameters included in the first message.

Specifically, if the QoS parameter supported by the first standard network (e.g., VPLMN 4G GBR upper limit=64 Kbps) is smaller than the QoS parameter included in the first message, it indicates that the QoS parameter supported by the first standard network does not match the QoS parameter included in the first message.

And 2, the first core network device judges whether a smaller value in QoS parameters supported by the first standard network and the second standard network is matched with the QoS parameters included in the first message.

Specifically, if a smaller value (for example, min (4 ggbr,5g GBR) =64 Kbps) of QoS parameters supported by the first standard network and the second standard network is smaller than the QoS parameters included in the first message, it indicates that the QoS parameters supported by the first standard network do not match the QoS parameters included in the first message.

In the above embodiment, through the QoS parameters supported by the first standard network or the smaller value of the QoS parameters supported by the first standard network and the second standard network, it may be determined whether the QoS parameters included in the first message are matched with the QoS parameters supported by the roaming network, and in the case of no match, the first core network device needs to send the second message including the target parameter.

Optionally, the first core network device sends the second message, and the following condition needs to be met:

the first core network device sends the second message in case the roaming network performs the voice service of the home subscriber and/or the roaming subscriber in a voice fallback manner, or in case the roaming network does not support the voice service of the home subscriber and/or the roaming subscriber in a new air interface carrying voice VONR manner.

It should be noted that, the voice fallback mode refers to a mechanism that the roaming network fallbacks the user residing in the second system network from the second system network to the first system network, and actually executes the voice service in the first system network.

Taking the first standard network as a 4G network and the second standard network element as a 5G network as an example, the corresponding voice fallback mode is called EPS fallback (EPS FB for short), which means that the network drops the user residing in the 5G network from the 5G network to the 4G network and initiates VoLTE voice service in the 4G network.

In practical application, taking the case that the first core network device is a V-SMF, the V-SMF determines, through network configuration information, that the roaming network VPLMN supports the voice service of the local user and/or the roaming user in the manner of EPS FB, or the V-SMF determines, through network configuration information, that the VPLMN does not support the VONR service, where the first core network device sends a second message including the target parameter.

Optionally, in one possible implementation manner of the embodiment of the present application, the first core network device sends the second message to a second core network device of a home network of the terminal.

Optionally, in case the first core network device comprises a mobility management function V-MME of the roaming network or a session management function V-SMF of the roaming network, the second core network device comprises at least one of:

a) A session management function H-SMF of the home network;

b) The packet data network gateway of the home network, e.g., the packet data network gateway control plane H-PGW-C of the home network.

Optionally, in case the first core network device comprises a session management function H-SMF of the home network or a packet data network gateway (e.g. H-PGW-C) of the home network, the second core network device comprises: the policy control function H-PCF of the home network.

Optionally, in case that the first core network device includes an H-SMF or a packet data network gateway of the home network, the first core network device further needs to receive a third message sent by a third core network device of the roaming network before sending the second message to the second core network device, where the third message includes the target parameter.

Optionally, the third core network device comprises a V-SMF.

Optionally, the third message is used to request to establish or modify a session for the terminal at the roaming location network.

It should be noted that, the third message is sent to the first core network device after the third core network device receives the session establishment or modification request message initiated by the terminal in the roaming network.

Optionally, in case the first core network device comprises an H-PCF, the second core network device comprises an IMS network device of the home network comprising proxy call session control functions, such as at least one of a P-CSCF, a serving call session control function, such as an S-CSCF, and a media service server.

Optionally, in case the first core network device includes an H-PCF, the first core network device further needs to receive a third message sent by a third core network device of the home network, before sending the second message to the second core network device, where the third message includes the target parameter.

It should be noted that, before the third core network device in the home location sends the third message to the first core network device, the target parameter in the third core network device in the home location may be obtained from a fourth core network device during the process of establishing or modifying the PDU session of the UE, where the fourth core network device includes a V-SMF.

Optionally, the third core network device of the home network comprises at least one of a session management function H-SMF of the home network and a packet data network gateway (e.g. H-PGW-C) of the home network.

FIG. 4 is a second flow chart of a communication processing method according to the embodiment of the present application, as shown in FIG. 4, the method includes steps 401-402; wherein:

step 401: the third core network device receives a fourth message for requesting initiation of session establishment or modification for the terminal at the roaming network.

In order for the user to use voice services roaming, in the embodiment of the present application, the third core network device first needs to receive a fourth message for requesting to initiate session establishment or modification for the terminal in the roaming network, where the fourth message may be referred to as a PDU session establishment request or modification message; roaming networks may also be referred to as visited networks.

Step 402: the third core network device sends a third message to the first core network device, wherein the third message comprises target parameters, and the target parameters comprise at least one of the following: quality of service (QoS) parameters supported by the first system network; the smaller value of QoS parameters supported by the first system network and the second system network; the first system network or the second system network is contained in the roaming place network, and the second system network is higher than or better than the first system network.

It should be noted that, preferably, the sending of the target parameter by the third core network device is also specific to the first bearer. In other words, the QoS parameters supported by the roaming network in the embodiments of the present application refer to QoS parameters supported by the roaming network for the first bearer (e.g., the voice service bearer).

In this embodiment, after the third core network device receives the fourth message, the third message including the target parameter is sent to the first core network device, so that the first core network device can establish the first bearer for the terminal based on the target parameter.

Optionally, the first core network device determines that the first bearer is at least one of a voice service bearer and a video service bearer; that is, the first bearer may include at least one of a voice bearer and a video bearer, for example, the first bearer may be a voice traffic media plane bearer, and the corresponding qci=1 (4G) or 5qi=1 (5G).

Optionally, in one possible implementation manner of the embodiment of the present application, the first core network device includes at least one of the following: session management functions of the home network, such as H-SMF; a packet data network gateway for a home network, such as H-PGW-C.

The third core network device includes session management functions, such as V-SMF, of the roaming network.

Optionally, in another possible implementation manner of the embodiment of the present application, the first core network device includes a policy control function of a home network of the terminal, such as an H-PCF; the third core network device comprises session management functions of a home network of the terminal, e.g. at least one of H-SMF and a packet data network gateway of the home network, e.g. H-PGW-C.

Optionally, in case that the third core network device includes at least one of a session management function of the home network and a packet data network gateway of the home network, the fourth core network device needs to receive the fourth message sent by the fourth core network device, where the fourth core network device includes the session management function of the roaming network, and the fourth message includes the target parameter.

It should be noted that, before the fourth core network device sends the fourth message to the third core network device, the fourth core network device needs to receive a fifth message from the terminal, where the fifth message is used to initiate session establishment or modification for the terminal in the roaming network.

Optionally, the QoS parameters include at least one of: GBR; MBR.

It should be noted that, the first system network and the second system network are distinguished by different radio access technologies RATs, and the RATs of the first system network and the second system network are different; and, the first system network or the second system network is included in the roaming place network, and the second system network (such as 5G network) is higher than or better than the first system network (such as 4G network).

In the communication processing method provided by the embodiment of the application, the third core network device receives the fourth message for requesting to initiate session establishment or modification for the terminal in the roaming network, and then sends the third message including the target parameter to the first core network device, so that the first core network device can renegotiate the parameter based on the third message.

Optionally, the third core network device needs to send a third message to the first core network device if a target condition is met, where the target condition includes at least one of:

a) The fourth message is for an IMS session;

in particular, the third core network device may determine that the fourth message is for an IMS session by means of the fourth message, i.e. the IMS data network identity (Data Network Name, DNN) in the PDU session establishment request or modification message.

b) The roaming place network executes the voice service of the local user and/or the roaming user in a voice fallback mode;

c) The roaming network does not support the execution of voice services for the home subscriber and/or the roaming subscriber in a VONR manner.

Optionally, the roaming network performs the voice service of the home subscriber and/or the roaming subscriber in a voice fallback manner, which is determined by at least one of the following manners:

in the mode 1, the third core network device determines, through network configuration information, that the roaming place network executes the voice service of the local user in a voice fallback mode;

mode 2, the third core network device determines that the roaming network executes the voice service of the roaming user in a voice fallback mode through network configuration information;

And 3, the third core network equipment determines that the roaming area network does not support the execution of the voice service of the local user and/or the roaming user in the VONR mode through the network configuration information.

Referring to fig. 5, fig. 5 is a schematic flow chart of establishing a voice bearer between UE-1 and UE-2 according to an embodiment of the present application. In FIG. 5, a flow of establishing a voice bearer between UE-1 and UE-2 is illustrated, and the voice call is performed by UE-1 and UE-2 in a roaming to VPLMN scenario, specifically comprising the following steps:

step 1: UE-1 establishes a PDU session over V-SMF in the roaming network.

Step 2: the UE-1 initiates an IMS voice service establishment request, initiates the request through Invite message, carries the information of the voice media to be established in the SDP of the request, and requests to establish the voice bearer with GBR of 512kbps through b=AS 512.

Step 3: the P-CSCF sends an HTTP POST request to the H-PCF that serves UE-1, carrying the media description information (media info) negotiated through SDP, derived from the SDP answer message, containing information that requires the use of 512 kbps.

Step 4: the H-PCF initiates a request for establishing a voice bearer to the H-SMF of the UE-1, wherein the request carries parameters of the voice bearer to be established, and the parameters comprise 512kbps GBR information.

Step 5: the H-SMF sends a PDU session Update Request (e.g., nsmf_PDUSion_Update Request) to the V-SMF, and the PDU session Update Request carries parameters of the voice bearer to be established.

Step 6: the V-SMF determines that the PDU session update request is used to establish a voice bearer, and determines that the VPLMN establishes a voice call through EPS FB (i.e., determines that EPS FB is about to be triggered).

Specifically, the method for determining that the VPLMN establishes the voice call through the EPS FB mode by the V-SMF comprises at least one of the following steps:

a) The V-SMF determines that the VPLMN supports voice service of the user in an EPS FB mode through network configuration information;

b) The V-SMF determines that the VPLMN supports voice service of the roaming network user in an EPS FB mode through network configuration information;

c) The V-SMF determines that the VPLMN does not support the VONR service through the network configuration information.

It should be noted that, in step 6, the V-SMF determines that the VPLMN is an optional determining step for establishing a voice call through the EPS FB mode, and in one implementation, step 7 is performed only if the determination is yes. In yet another implementation, step 7 may be performed directly without performing this determination step.

Step 7: in case that the parameters supported by the VPLMN are inconsistent with the parameters of the voice bearer to be established in the PDU session Update request, the V-SMF sends a voice bearer establishment Response message (specifically, nsmf_pdusion_update Response) to the H-SMF/PGW-C, where the QoS parameter information supported by the VPLMN (i.e. the above-mentioned target parameters) is carried, specifically at least one of the following:

a) VPLMN supported 4G QoS parameters, such as 4G GBR and/or MBR, with the 4G QoS parameters being GBR as an example, VPLMN 4G GBR upper limit = 64Kbps;

b) Smaller values of VPLMN supported 4G QoS and 5G QoS, such as Min (4G GBR upper limit, 5G GBR upper limit), and/or Min (4G MBR,5G MBR).

Wherein, the inconsistency between the parameters supported by the VPLMN and the parameters of the voice bearer to be established in the PDU session update request refers to at least one of the following cases:

a) The VPLMN supported 4G QoS parameters (e.g., VPLMN 4G GBR upper limit = 64 Kbps) are less than the PDU session update requested QoS parameters;

b) The smaller of the 4G QoS and 5G QoS supported by the VPLMN is less than the QoS parameters of the PDU session update request.

Step 8-9: the H-SMF/PGW-C delivers the parameter information supported by the VPLMN to the P-CSCF through the H-PCF.

Step 10: the P-CSCF sends a SIP 488 message to UE-1.

Specifically, the SIP 488 message carries receivable SDP information, where the SDP information includes the acquired parameter conditions supported by the VPLMN.

Step 11: the UE-1 modifies the IMS call setup request message and sends a SIP re-Invite request message or a SIP Update request message to the S-CSCF, wherein SDP information of the SIP request message contains the received VPLMN parameters.

For example, UE-1 sends a SIP re-invite message carrying the information of the voice media to be established in the requested SDP, requesting to establish a voice bearer with GBR of 64kbps by b=as: 64.

Step 12: the S-CSCF sends a SIP re-Invite (re-Invite) request message or a SIP Update (Update) request message to the UE-2.

Step 13: UE-2 replies to the 183 message through the S-CSCF, including SDP answer in the 183 message.

Step 14-15: UE2 replies to UE1 with a 200OK message.

Thus, a voice call may be made between UE-1 and UE-2.

Referring to fig. 6, fig. 6 is a second schematic flow chart of establishing a voice bearer between UE-1 and UE-2 according to an embodiment of the present application. In FIG. 6, a flow of establishing a voice bearer between UE-1 and UE-2 is illustrated, and the voice call is performed by UE-1 and UE-2 in a roaming to VPLMN scenario, specifically comprising the following steps:

step 1: UE-1 initiates a PDU session establishment request/modification message within the VPLMN, which is passed to the V-SMF.

Step 2: the V-SMF determines that the PDU session establishment request/modification message is for an IMS session and determines that the VPLMN is to establish a voice call through EPS FB mode.

Specifically, the V-SMF determines that the PDU session establishment request/modification message is for an IMS session, which may be implemented by: the V-SMF may determine that the PDU session setup/modification request message is for an IMS session through the IMS DNN in the PDU session setup/modification request message.

The method for determining that the VPLMN establishes the voice call through the EPS FB mode by the V-SMF comprises at least one of the following steps:

It should be noted that step 2 is an optional determining step, and in one implementation, step 3 is performed only if step 2 is determined to be "yes". In another implementation, step 3 may be directly performed without performing step 2.

Step 3: the V-SMF sends PDU session establishment/modification request message to the H-SMF/PGW-C, wherein the message contains parameter information supported by VPLMN, and specifically at least one of the following:

Step 4: UE-1 initiates an IMS setup request, initiates the request through Invite message, carries the information of the voice media to be set up in the SDP of the request, and requests to set up the voice bearer with GBR of 512kbps through b=AS:512.

Step 5: the P-CSCF sends an HTTP POST request to the H-PCF that serves UE-1, carrying the media description information (media info) negotiated through SDP, derived from the SDP answer message, containing information that requires the use of 512 kbps.

Step 6: the H-PCF initiates a request for establishing a voice bearer to the H-SMF of the UE-1, wherein the request carries parameters of the voice bearer to be established, and the parameters comprise 512kbps GBR information.

And under the condition that the parameters supported by the VPLMN are inconsistent with the parameters of the voice bearer to be established in the PDU session updating request, the H-SMF/PGW-C sends a voice bearer establishment response message to the P-CSCF through the H-PCF, wherein the voice bearer establishment response message comprises the parameter information supported by the VPLMN.

The method is realized by the steps 7-8:

step 7: the H-SMF/PGW-C initiates an SM policy association modification reject to the H-PCF (initiated SM policy association modification reject).

Step 8: PCF sends HTTP POST request to P-CSCF, carrying parameter information supported by VPLMN.

Step 9: the P-CSCF sends a SIP 488 message to UE-1.

Step 10: the UE-1 modifies the IMS call establishment request message and sends a SIP re-Invite (re-Invite) request message or a SIP Update (Update) request message, wherein SDP information of the SIP request message contains the received VPLMN parameters.

Step 11: the S-CSCF sends a SIP re-Invite (re-Invite) request message or a SIP Update (Update) request message to the UE-2.

Step 12: UE-2 replies to the 183 message through the S-CSCF, including SDP answer in the 183 message.

Step 13-14: UE2 replies to UE1 with a 200OK message.

Referring to fig. 7, fig. 7 is a third flow chart of establishing a voice bearer between UE-1 and UE-2 according to an embodiment of the present application. In FIG. 7, a flow of establishing a voice bearer between UE-1 and UE-2 is illustrated, and the voice call is performed by UE-1 and UE-2 in a roaming to VPLMN scenario, specifically comprising the following steps:

Step 3: V-SMF sends PDU session establishment/modification request message to H-SMF/PGW-C;

in the case of executing step 2, the PDU session establishment/modification request message includes parameter information supported by VPLMN, specifically at least one of the following:

Step 4: the H-SMF/PGW-C judges that the PDU session establishment request/modification message is for IMS session, and determines that the VPLMN establishes a voice call through EPS FB mode.

It should be noted that step 4 is an optional determining step, and in one implementation, step 5 is performed only if step 4 is determined to be "yes". In another implementation, step 5 may be directly performed without performing step 4.

Specifically, the H-SMF/PGW-C determines that the PDU session establishment request/modification message is for an IMS session, which may be implemented by: the H-SMF/PGW-C may determine, via the IMS DNN in the PDU session establishment/modification request message, that the PDU session establishment/modification request message is for an IMS session.

The method for determining that the VPLMN establishes the voice call through the EPS FB mode by the H-SMF/PGW-C comprises at least one of the following steps:

a) The H-SMF/PGW-C determines that the VPLMN supports voice service of the user in an EPS FB mode through network configuration information;

b) The H-SMF/PGW-C determines that the VPLMN supports the voice service of the roaming user in the EPS FB mode through the network configuration information;

c) The H-SMF/PGW-C determines that the VPLMN does not support the VONR service through the network configuration information.

Step 5: the H-SMF/PGW-C sends a session policy association setup request/modification message to the H-PCF serving the UE-1.

Step 6: UE-1 initiates an IMS setup request, initiates the request through Invite message, carries the information of the voice media to be set up in the SDP of the request, and requests to set up the voice bearer with GBR of 512kbps through b=AS:512.

Step 7: the P-CSCF sends an HTTP POST request to the H-PCF carrying the media description information (media info) negotiated through the SDP, derived from the SDP answer message, containing information that requires the use of 512 kbps.

Step 8: the H-PCF sends an HTTP POST request to the P-CSCF, and the HTTP POST request carries parameter information supported by the VPLMN.

Step 9: the P-CSCF sends a SIP 488 message to UE-1.

Step 13-14: UE2 replies to UE1 with a 200OK message.

According to the communication processing method provided by the embodiment of the application, the execution main body can be a communication processing device. In the embodiment of the present application, a communication processing apparatus provided in the embodiment of the present application will be described by taking an example of a communication processing method performed by the communication processing apparatus.

Fig. 8 is a schematic structural diagram of a communication processing apparatus according to an embodiment of the present application, and as shown in fig. 8, the communication processing apparatus 800 includes:

a first receiving module 800, configured to receive a first message, where the first message is used to request a roaming network of a terminal to establish a first bearer;

a determining module 801, configured to determine whether a quality of service QoS parameter included in the first message matches a QoS parameter supported by the roaming network;

a first sending module 802, configured to send a second message, where the QoS parameters included in the first message do not match the QoS parameters supported by the roaming network, and the second message includes a target parameter, where the target parameter includes at least one of the following:

QoS parameters supported by the first system network;

In the communication processing device provided in the embodiment of the present application, when the QoS parameter included in the first message for requesting the roaming network to establish the first bearer for the terminal is not matched with the QoS parameter supported by the roaming network, the target parameter is renegotiated by sending the QoS parameter including the target parameter, and in addition, because the target parameter includes the QoS parameter supported by the first standard network of the roaming network and/or a smaller value in the QoS parameter supported by the first standard network and the QoS parameter supported by the second standard network, the second standard network is higher than or better than the first standard network, so that the QoS parameter supported by the first standard network or the QoS parameter supported by the first standard network and the QoS parameter supported by the second standard network can be directly renegotiated to be the QoS parameter supported by the first standard network or the smaller value in the QoS parameter supported by the first standard network and the second standard network, multiple renegotiations that may occur can be avoided, the call delay of the roaming user is shortened as much as possible, and the user experience is further successfully established for the user in roaming.

Optionally, the QoS parameters include at least one of:

guaranteeing bit rate GBR;

maximum bit rate MBR.

Optionally, in the case that the QoS parameter includes the GBR, the QoS parameter supported by the roaming network includes a GBR upper limit value supported by the roaming network.

Optionally, the apparatus further comprises:

the first determining module is configured to determine that the first bearer is at least one of a voice service bearer and a video service bearer.

Optionally, the determining module 801 is further configured to:

judging whether the QoS parameters supported by the first standard network are matched with the QoS parameters included in the first message or not;

and judging whether a smaller value in QoS parameters supported by the first standard network and the second standard network is matched with the QoS parameters included in the first message.

Optionally, the first sending module 802 is further configured to:

And sending the second message under the condition that the roaming place network executes the voice service of the local user and/or the roaming user in a voice fallback mode or under the condition that the roaming place network does not support executing the voice service of the local user and/or the roaming user in a new air interface carrying voice VONR mode.

Optionally, the first sending module 802 is further configured to:

and sending the second message to second core network equipment of the home network of the terminal.

Optionally, the first core network device includes at least one of: a mobility management function of the roaming place network and a session management function of the roaming place network;

the second core network device comprises at least one of the following: a session management function of the home network and a packet data network gateway of the home network.

Optionally, the first core network device includes at least one of: a session management function of the home network and a packet data network gateway of the home network;

the second core network device includes a policy control function of the home network.

Optionally, the apparatus further comprises:

and a third receiving module, configured to receive a third message sent by a third core network device of the roaming network, where the third message includes the target parameter.

Optionally, the third core network device includes a session management function of the roaming destination network.

Optionally, the first core network device includes: a policy control function of the home network;

the second core network device comprises an IMS network device of the home network, the IMS network device comprising at least one of a proxy call session control function, a serving call session control function, and a media service server.

Optionally, the apparatus further comprises:

and a fourth receiving module, configured to receive a third message sent by a third core network device of the home network, where the third message includes the target parameter.

Optionally, the third core network device includes at least one of a session management function of the home network and a packet data network gateway of the home network

Optionally, the third message is used to request to establish or modify a session for the terminal at the roaming network.

Fig. 9 is a second schematic structural diagram of a communication processing apparatus according to an embodiment of the present application, and as shown in fig. 9, the communication processing apparatus 900 includes:

a second receiving module 901, configured to receive a fourth message, where the fourth message is used to request to initiate session establishment or modification for the terminal in the roaming network;

A second sending module 901, configured to send a third message to the first core network device, where the third message includes a target parameter,

the target parameters include at least one of:

quality of service (QoS) parameters supported by the first system network;

In the communication processing device provided in the embodiment of the present application, by receiving the fourth message for requesting to initiate session establishment or modification for the terminal in the roaming network, and then sending the third message including the target parameter to the first core network device, the first core network device may renegotiate the parameter based on the third message, in addition, since the target parameter includes the QoS parameter supported by the first standard network of the roaming network and/or the smaller value in the QoS parameter supported by the first standard network and the second standard network, the second standard network is higher than or better than the first standard network, which can implement direct feedback of the QoS parameter supported by the first standard network or the smaller value in the QoS parameter supported by the first standard network and the second standard network, so that the call parameter may be renegotiated directly into the QoS parameter supported by the first network or the smaller value in the QoS parameter supported by the first standard network and the second standard network, multiple renegotiations that may occur may be avoided, the call delay of the roaming user is shortened as much as possible, and the user experience is improved.

Optionally, the QoS parameters include at least one of:

guaranteeing bit rate GBR;

maximum bit rate MBR.

Optionally, the second sending module 901 is further configured to:

sending the third message to the first core network device when a target condition is met;

wherein the target condition includes at least one of:

the fourth message is for an IMS session;

the roaming place network executes the voice service of the local user and/or the roaming user in a voice fallback mode;

the roaming network does not support the execution of voice services for the local user and/or the roaming user in the new air interface carrying voice VONR manner.

Optionally, the apparatus further comprises:

the second determining module is used for determining that the roaming place network executes the voice service of the local user in a voice fallback mode through the network configuration information;

a third determining module, configured to determine, through network configuration information, that the roaming place network performs a voice service of the roaming user in a voice fallback manner;

And the fourth determining module is used for determining that the roaming place network does not support the voice service of the local user and/or the roaming user in the VONR mode through the network configuration information.

Optionally, the first core network device includes at least one of: a session management function of a home network of the terminal and a packet data network gateway of the home network;

the third core network device includes a session management function of the roaming place network.

Optionally, the first core network device includes: a policy control function of a home network of the terminal;

the third core network device comprises at least one of a session management function of a home network of the terminal and a packet data network gateway of the home network.

Optionally, the second receiving module 901 is further configured to:

and receiving the fourth message sent by fourth core network equipment, wherein the fourth core network equipment comprises a session management function of the roaming network, and the fourth message comprises the target parameter.

The communication processing apparatus in the embodiments of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The communication processing device provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 3 to fig. 7, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Optionally, fig. 10 is a schematic structural diagram of a communication device 1000 provided in the embodiment of the present application, including a processor 1001 and a memory 1002, where the memory 1002 stores a program or an instruction that can be executed on the processor 1001, for example, when the communication device 1000 is a first core network device, the program or the instruction is executed by the processor 1001 to implement the steps of the embodiment of the communication processing method shown in fig. 3, and achieve the same technical effects. When the communication device 1000 is a third core network device, the program or the instruction, when executed by the processor 1001, implements the steps of the embodiment of the communication processing method shown in fig. 4, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

Optionally, fig. 11 is a schematic structural diagram of a core network device provided in an embodiment of the present application. As shown in fig. 11, the core network device 1100 includes: a processor 1101, a network interface 1102, and a memory 1103. The network interface 1102 is, for example, a common public radio interface (common public radio interface, CPRI).

Specifically, the core network device 1100 of the embodiment of the present invention further includes: when the core network device 1100 is, for example, a first core network device, the processor 1101 invokes the instructions or programs stored in the memory 1103 to implement the steps of the embodiment of the communication processing method shown in fig. 3, and achieve the same technical effects. When the core network device 1100 is the third core network device, the processor 1101 invokes instructions or programs in the memory 1103 to implement the steps of the embodiment of the communication processing method shown in fig. 4, and the same technical effects can be achieved, so that repetition is avoided and no further description is provided herein.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the embodiment of the communication processing method, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used for running a program or an instruction, so as to implement each process of the embodiment of the communication processing method, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the embodiments of the communication processing method, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides a communication processing system, which comprises: a first core network device operable to perform the steps of the communication processing method as described in fig. 3, and a third core network device operable to perform the steps of the communication processing method as described in fig. 4.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A communication processing method, comprising:

QoS parameters supported by the first system network;

2. The communication processing method according to claim 1, wherein the QoS parameters include at least one of:

guaranteeing bit rate GBR;

maximum bit rate MBR.

3. The communication processing method according to claim 2, wherein in the case where the QoS parameter includes the GBR, the QoS parameter supported by the roaming network includes a GBR upper limit value supported by the roaming network.

4. A communication processing method according to any of claims 1 to 3, characterized in that the second message is used to refuse to establish the first bearer for the terminal in the roaming network.

5. The communication processing method according to claim 4, wherein reject cause information indicating that the roaming place network cannot satisfy QoS parameters included in the first message is included in the second message.

6. The communication processing method according to any one of claims 1 to 5, characterized in that the method further comprises:

The first core network device determines that the first bearer is at least one of a voice service bearer and a video service bearer.

7. The communication processing method according to any one of claims 1 to 6, wherein the first core network device determines whether or not a quality of service QoS parameter included in the first message matches a QoS parameter supported by the roaming network, including at least one of:

the first core network device judges whether the QoS parameters supported by the first standard network are matched with the QoS parameters included in the first message;

and the first core network device judges whether a smaller value in QoS parameters supported by the first standard network and the second standard network is matched with the QoS parameters included in the first message.

8. The communication processing method according to any one of claims 1 to 7, wherein the first core network device transmits a second message, comprising:

9. The communication processing method according to any one of claims 1 to 8, wherein the first core network device transmits a second message, comprising:

the first core network device sends the second message to a second core network device of a home network of the terminal.

10. The communication processing method according to claim 9, wherein the first core network device includes at least one of: a mobility management function of the roaming place network and a session management function of the roaming place network;

11. The communication processing method according to claim 9, wherein the first core network device includes at least one of: a session management function of the home network and a packet data network gateway of the home network;

12. The communication processing method according to claim 11, characterized in that the method further comprises:

and the first core network equipment receives a third message sent by third core network equipment of the roaming area network, wherein the third message comprises the target parameter.

13. The communication processing method according to claim 12, wherein the third core network device includes a session management function of the roaming destination network.

14. The communication processing method according to claim 9, wherein the first core network device includes a policy control function of the home network;

15. The communication processing method according to claim 14, characterized in that the method further comprises:

the first core network device receives a third message sent by a third core network device of the home network, wherein the third message comprises the target parameter.

16. The communication processing method according to claim 15, wherein the third core network device includes at least one of a session management function of the home network and a packet data network gateway of the home network.

17. A communication processing method according to any of claims 12 to 16, characterized in that the third message is used to request the establishment or modification of a session for the terminal in the roaming network.

18. A communication processing method, comprising:

the third core network device sends a third message to the first core network device, wherein the third message comprises target parameters, and the target parameters comprise at least one of the following:

quality of service (QoS) parameters supported by the first system network;

the minimum value in QoS parameters supported by the first system network and the second system network;

19. The communication processing method according to claim 18, wherein the QoS parameters include at least one of:

guaranteeing bit rate GBR;

maximum bit rate MBR.

20. The communication processing method according to claim 19, wherein in the case where the QoS parameter includes the GBR, the QoS parameter supported by the roaming network includes a GBR upper limit value supported by the roaming network.

21. The communication processing method according to any one of claims 18 to 20, wherein the third core network device sends a third message to the first core network device, comprising:

The third core network device sends the third message to the first core network device when the third core network device meets the target condition;

wherein the target condition includes at least one of:

the fourth message is for an IP multimedia subsystem, IMS, session;

22. The communication processing method according to claim 21, wherein the roaming destination network performs voice traffic of the home subscriber and/or the roaming subscriber in a voice fallback manner, as determined by at least one of:

the third core network equipment determines that the roaming place network executes the voice service of the local user in a voice fallback mode through network configuration information;

the third core network equipment determines that the roaming place network executes the voice service of the roaming user in a voice fallback mode through network configuration information;

and the third core network equipment determines that the roaming place network does not support the execution of voice service of the local user and/or the roaming user in a VONR mode through network configuration information.

23. The communication processing method according to any one of claims 18 to 22, wherein the first core network device includes at least one of: a session management function of a home network of the terminal and a packet data network gateway of the home network;

24. The communication processing method according to any one of claims 18 to 22, wherein the first core network device includes: a policy control function of a home network of the terminal;

25. The communication processing method according to claim 24, wherein the third core network device receives a fourth message, the method comprising:

the third core network device receives the fourth message sent by a fourth core network device, wherein the fourth core network device comprises a session management function of the roaming network, and the fourth message comprises the target parameter.

26. A communication processing apparatus, comprising:

QoS parameters supported by the first system network;

27. A communication processing apparatus, comprising:

The target parameters include at least one of:

quality of service (QoS) parameters supported by the first system network;

28. A first core network device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the communication processing method of any of claims 1 to 17.

29. A third core network device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the communication processing method of any of claims 18 to 25.

30. A readable storage medium, characterized in that the readable storage medium stores thereon a program or instructions, which when executed by a processor, implement the communication processing method according to any one of claims 1 to 17, or implement the steps of the communication processing method according to any one of claims 18 to 25.