CN117479341A

CN117479341A - Communication processing method, device, communication equipment and readable storage medium

Info

Publication number: CN117479341A
Application number: CN202210870136.2A
Authority: CN
Inventors: 崇卫微; 程思涵
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2024-01-30

Abstract

The application discloses a method, a device, a communication device and a readable storage medium for communication processing, wherein the method comprises the following steps: 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 to establish a first bearing for a terminal; the first core network device judges whether the first bearer parameter contained in the first message is matched with the bearer parameter supported by the roaming network; under the condition of no matching, the first core network equipment modifies the parameters of the first bearer according to the bearer parameters supported by the roaming area network; and the first core network equipment sends a second message, wherein the second message carries the modified parameters of the first bearer.

Description

Communication processing method, device, communication equipment and readable storage medium

Technical Field

The application belongs to the technical field of communication, and particularly relates to a communication processing method, a device, communication equipment and a readable storage medium.

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

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

the value 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 system (IP Multimedia Subsystem, IMS) session request according to the stored MNO C configuration, and establishes a voice bearer or a video call 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 or a video call bearer according to the negotiation result of the IMS layer, the MNO only supports the establishment of the voice bearer or the video call bearer of 64kbps, which results in that the network side refuses the request for establishing the voice bearer or the video call bearer, and thus results in failure in establishing the voice bearer or the video call bearer, and the user cannot use the voice service or the video call service in the roaming place.

Disclosure of Invention

The embodiment of the application provides a communication processing method, a device, communication equipment and a readable storage medium, which solve the problem of how to successfully establish a bearing for both communication parties.

In a first aspect, a method of communication processing is provided, 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 to establish a first bearing for a terminal;

the first core network device judges whether the first bearer parameter contained in the first message is matched with the bearer parameter supported by the roaming network;

under the condition of no matching, the first core network equipment modifies the parameters of the first bearer according to the bearer parameters supported by the roaming area network;

and the first core network equipment sends a second message, wherein the second message carries the modified parameters of the first bearer.

In a second aspect, an apparatus for communication processing is provided, which is applied to a first core network device, and includes:

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

a determining module, configured to determine whether a parameter of the first bearer included in the first message is matched with a bearer parameter supported by the roaming network;

a modifying module, configured to modify, under a mismatch condition, parameters of the first bearer according to bearer parameters supported by the roaming network;

The first sending module is used for sending a second message, and the second message carries the modified parameters of the first bearer.

In a third aspect, there is provided a communication device comprising: a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the method as described in the first aspect.

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

In a fifth aspect, there is provided a chip comprising a processor and a communication interface coupled to the processor for running a program or instructions implementing the steps of the method according to the first aspect.

In a sixth aspect, a computer program/program product is provided, the computer program/program product being stored in a non-transitory storage medium, the program/program product being executed by at least one processor to implement the steps of the method according to the first aspect.

In a seventh aspect, a communication system is provided, the communication system comprising a terminal and a core network device for performing the steps of the method according to the first aspect.

In the embodiment of the application, under the condition that the parameter for requesting the roaming network to establish the first bearer for the terminal is not matched with the bearer parameter supported by the network, the first core network device does not reject the establishment request of the first bearer, but can modify the parameter for requesting to establish the first bearer and establish the first bearer according to the adjusted parameter, so that two communication parties can communicate through the successfully established first bearer, and user experience is improved.

Drawings

FIG. 1 is a flow chart of a UE-1 and UE-2 setup of a voice bearer;

fig. 2 is a schematic diagram of a wireless communication system according to an embodiment of the present invention;

FIG. 3 is one of the flowcharts of a method of communication processing provided by an embodiment of the present application;

FIG. 4 is a flowchart of establishing a voice bearer between UE-1 and UE-2 according to an embodiment of the present application;

FIG. 5 is one of the schematic diagrams of the internal processing of UE-1 in the embodiment shown in FIG. 5;

FIG. 6 is a second schematic diagram of the internal processing of UE-1 in the embodiment shown in FIG. 5;

Fig. 7 is a schematic diagram of an apparatus for communication processing according to an embodiment of the present application;

fig. 8 is a schematic diagram of a core network device according to an embodiment of the present application;

fig. 9 is a schematic diagram of a communication 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 is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (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 (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.

Referring to fig. 1, a flow of establishing a voice bearer between UE-1 and UE-2 is illustrated, in which UE-1 makes a voice call with UE-2 in a public land mobile network (Visited Public Land Mobile Network, VPLMN) scenario moving to a roaming place, if VPLMN performs a voice service through an evolved packet system (Evolved Packet System, EPS) fallback (fallback) technique, and VPLMN can support parameters of the voice bearer of UE-1 and UE-2 after negotiation in an IMS layer, specific steps are as follows:

Step 1: UE-1 establishes a protocol data unit (Protocol Data Unit, PDU) session at the roaming network through the roaming session management function (Visiting Session Management Function, V-SMF).

Step 2: UE-1 initiates an IMS setup request, which is initiated by an Invite message, carrying the information of the voice media to be set up in the requested SDP, and by b=application server (Application Server, AS) 512 requests to set up a voice bearer with GBR of 512 kbps.

Step 3: the Proxy call session control function (Proxy-Call Session Control Function, P-CSCF) sends a hypertext transfer protocol (Hyper Text Transfer Protocol, HTTP) notification (POST) Request (Request) carrying media description information (media info) negotiated by SDP, obtained from an SDP answer message, containing information requiring the use of 512kbps, to the policy control function (Policy Control Function, PCF) serving UE-1 via (Serving Call Session Control Function, S-CSCF).

Step 4: the PCF initiates a request for establishing a voice bearer to a Home SMF (Home-Session Management Function, H-SMF) of the UE-1, wherein parameters of the voice bearer to be established are carried in the request, and the parameters comprise 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, and the PDU session Update Request carries 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, where the request message contains 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 establishment of a voice bearer (5G quality of service identifier (5G QoS Identifier,5QI) =1 QoS flow);

step 8: and if the gNB judges that the VPLMN does not support the new air interface carried voice (Voice over New Radio, voNR) and only supports the evolved packet system (Evolved Packet System, EPS) fallback (fallback), triggering voice service to fall back to a fourth generation mobile communication technology (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: triggering a switching or redirecting process by the gNB, and switching or redirecting the UE-1 to the VPLMN 4G cell;

step 10: after the H-SMF/PDN gateway control plane (PDN Gateway Control Plane Function, PGW-C) determines that the fallback procedure is finished (i.e., UE-1 accesses the 4G network), triggering to reestablish the voice bearer in the 4G network (QoS class identifier (QoS Class Identifier, QCI) =1 bearer), where the parameters of the voice bearer requested to be established are included;

Step 11: a Serving Gateway (SGW) sends a voice bearer (qci=1 bearer) establishment request to a mobility management entity (Mobility Management Entity, MME), wherein the voice bearer establishment request includes 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), wherein the voice bearer establishment request includes parameters of the voice bearer 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).

In the figure, both the P-CSCF and the S-CSCF are IMS network elements for providing services for the UE-1, and the IMS network elements for providing services for the 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.

In the flow shown in fig. 1, 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.

Fig. 2 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 21 and a network device 22.

The terminal 21 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.. In addition to the above terminal device, the terminal related to the present application may also be a Chip in the terminal, such as a Modem (Modem) Chip, a System on Chip (SoC). Note that, the specific type of the terminal 21 is not limited in the embodiment of the present application.

The network-side device 22 may comprise an access network device or a core network device, wherein the access network device 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 and 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.

The method, apparatus, communication device and 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, by using some embodiments and application scenarios of the embodiments.

Referring to fig. 3, an embodiment of the present application provides a method for communication processing, which is applied to a first core network device, where the first core network device includes, but is not limited to: at least one of a mobility management entity, a session management function, an access and a mobility management function, the specific steps include: step 301, step 302, step 303, step 304 and step 305.

Step 301: 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 to establish a first bearing for a terminal;

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

It should be noted that the first standard network and the second standard network are distinguished by different radio access technologies (Radio Access technology, RAT), and the RATs of the first standard network and the second standard network are different.

Optionally, the first system network and the second system network belong to roaming area networks, and the first system network and the second system network are networks with different RATs in the roaming area networks.

In one embodiment, the first core network device may be a mobility management entity, such as an MME in a 4G network, and the first core network device may receive the first message from a packet data network gateway (Packet Data Network Gateway, PGW) or SGW during a fallback of the terminal from the second standard network (such as a 5G network) to the first standard network (such as a 4G network), although not limited thereto.

In another embodiment, the first core network device is a session management function or an access and mobility management function, and the first core network device may receive the first message from the H-SMF.

The first message may be referred to as a PDU session update request message or a bearer establishment request message, where the first message may carry parameters of the first bearer.

Wherein the roaming destination network may also be referred to as a visited network.

Optionally, 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 service media plane bearer, and the corresponding qci=1 (4G) or 5qi=1 (5G).

Step 302: the first core network device judges whether the first bearer parameter contained in the first message is matched with the bearer parameter supported by the roaming network;

For example, the first core network judges whether the absolute value of the difference between the first bearer parameter and the bearer parameter supported by the network is greater than a preset value;

judging that the first bearer parameter and the network supported bearer parameter are not matched under the condition that the absolute value of the difference value of the first bearer parameter and the network supported bearer parameter is larger than or equal to a preset value; or, if the absolute value of the difference between the first bearer parameter and the bearer parameter supported by the network is smaller than a preset value, determining that the first bearer parameter and the bearer parameter are matched.

Optionally, the parameter of the first bearer includes at least one of a guaranteed bit rate and a maximum bit rate corresponding to the first bearer.

In this embodiment, the bearer parameters supported by the network may be bearer parameters supported by a network node on the radio side, or may also be bearer parameters supported by a network node on the core network side.

Step 303: under the condition of no matching, the first core network equipment modifies the parameters of the first bearer according to the bearer parameters supported by the roaming area network;

as a possible implementation manner, the first core network device matches the parameter of the first bearer according to the parameter of the bearer supported by the roaming area network, so that the parameter of the modified first bearer matches the parameter of the bearer supported by the roaming area network, for example, the parameter of the modified first bearer is consistent with the parameter of the bearer supported by the roaming area network or the absolute value of the difference between the parameter of the modified first bearer and the parameter of the bearer supported by the roaming area network is smaller than a preset value.

Optionally, before step 303, the first core network device may accept the first message, i.e. the first core network device accepts or allows the establishment of the first bearer.

Optionally, the first core network device may determine whether the first bearer is at least one of a voice bearer and a video bearer, and if the first core network device determines that the first bearer is at least one of a voice bearer and a video bearer, the first core network device modifies a parameter of the first bearer according to a bearer parameter supported by the roaming network.

Step 304: and the first core network equipment sends a second message, wherein the second message carries the modified parameters of the first bearer.

Optionally, step 305: and in case of matching, the first core network device accepts the first message.

In an embodiment, the roaming destination network may be a first standard network, and the first core network device belongs to the first standard network, for example, the first standard network may be a 4G network, which is not limited thereto.

Optionally, in step 304, the first core network device may send the second message to the terminal and/or the access network device of the first standard network, where the first core network device may be a mobility management entity, such as an MME in a 4G network.

In another embodiment, the roaming network may be a second standard network, and the first core network device belongs to the second standard network, for example, the second standard network may be a 5G network, which is not limited thereto.

It will be appreciated that the second-system network is a roaming network that serves the terminal. Specifically, in a scenario in which the terminal falls back from the second-system network to the first-system network, the second-system network is a network to which the terminal is connected before falling back. In the scenario that the terminal does not need to fall back, the second system network is the network to which the terminal is initially connected.

Optionally, in step 304, the first core network device may send the second message to an access network device of the second standard network and/or a second core network device of the second standard network, where the second core network device includes, but is not limited to, an AMF.

Referring to fig. 4, a specific example is provided, and the specific steps are as follows:

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

Step 2: 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 3: the P-CSCF sends an HTTP POST request to the H-PCF serving UE-1 via the S-CSCF, which carries the media description information negotiated through the SDP, which is derived from the SDP answer message, including information requiring 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 6: optionally, the V-SMF determines that the first message is used to request the roaming network to establish a voice bearer for the terminal, and in the case that the parameters of the voice bearer requested to be established are not matched with the parameters supported by the network, the V-SMF may accept the first message, so as to avoid the problem that in the case of mismatching, both parties of communication cannot successfully establish the voice bearer due to the fact that the V-SMF sends a rejection message.

Optionally, the parameters in the PDU session modification command (PDU session modification command) message sent to UE-1 by the V-SMF modification are network supported voice bearer parameters and/or the parameters of the voice bearer sent to the gNB by the V-SMF modification are network supported voice bearer parameters.

Optionally, the V-SMF sends a namf_communication_n1n2messagetransfer message to the AMF, carrying the parameters of the modified voice bearer.

Step 7: the AMF sends an N2message to the gNB requesting the establishment of a voice bearer (5q1=1 QoS flow);

step 8: and if the gNB judges that the VPLMN does not support VoNR and only supports EPS fallback, triggering the voice service to fall back to the 4G network flow.

step 10: after the H-SMF/PGW-C judges that the fallback procedure is finished (namely, the UE-1 is accessed to the 4G network), triggering the 4G network to reestablish the voice bearer, wherein the voice bearer carries the parameters of the voice bearer which is requested to be established;

step 11: the SGW sends a voice bearer (QCI=1 bearer) establishment request to the MME, wherein parameters for requesting to establish the voice bearer are carried;

step 12: the MME determines that the request sent in step 11 is for establishing a voice bearer, and if the parameters of the voice bearer established by the roaming network are not matched with the parameters of the voice bearer supported by the network, the MME accepts the voice bearer establishment request, that is, the MME does not reject the establishment of the voice bearer.

Optionally, the parameters of the voice bearer sent to UE-1 by MME modification are network-supported voice bearer parameters (e.g. 64 kbps), and/or the parameters of the voice bearer sent to eNB by MME modification are network-supported voice bearer parameters.

Optionally, the MME sends a voice bearer setup request (bearer setup request) message to the eNB, carrying the parameters of the modified voice bearer.

Step 13: the eNB sends an RRC connection reconfiguration message to the UE-1, and the UE-1 replies with an acknowledgement message.

Optionally, a non-Access Stratum (Non Access Stratum, NAS) message sent to UE-1 may be included in step 13, and/or an Access Stratum (AS) message sent to UE-1 may also be included.

Wherein the AS layer is configured to configure data radio bearers (Data Radio Bearer, DRB) between UE-1 and the gNB, and the DRB is configured to transmit data of UE-1 between UE-1 and the gNB.

Step 14: the eNB sends an acknowledgement message (i.e., a bearer setup response message) to the MME.

Step 15: the MME sends an acknowledgement message to the SGW.

Step 16: the SGW sends an acknowledgement message to the H-SMF/PGW-C.

Step 17: the H-SMF/PGW-C sends an acknowledgement message to the H-PCF.

Step 18: the H-PCF sends an acknowledgement message to the P-CSCF.

Step 19: the P-CSCF sends 183 a message to UE-1, which 183 contains SDP answer messages containing parameters of the IMS layer acknowledged by UE-2, e.g. bandwidth parameters.

Step 20-22: the UE-2 picks up the call and the P-CSCF sends a 200OK acknowledgement message to UE-1.

Step 23: the UE-1 determines whether the parameters of the voice bearer requested to be established match the IMS session parameters, and if not, performs step 24.

The UE-1 has two specific judging modes:

mode 1: a scenario applicable to parameters of a voice bearer received by the NAS layer of UE-1 from MME, specifically:

as shown in fig. 5, the NAS layer of the UE-1 receives the parameters of the MME for sending the voice bearer, the NAS layer of the UE-1 sends the parameters of the voice bearer to the IMS layer, the IMS layer of the UE-1 determines whether the parameters of the voice bearer are matched with the parameters of the IMS layer, if not, the UE-1 initiates an IMS session renegotiation request, and the session renegotiation request includes IMS parameters corresponding to the parameters of the voice bearer.

For example, when the IMS layer negotiates parameters 512kbps, and when the 4G NAS layer obtains parameters 64kbps, the NAS layer transmits 64kbps to the IMS layer, and then the IMS layer renegotiates with the UE-2 by using 64kbps, so that both communication parties use 64kbps for communication.

Mode 2: the method is suitable for the situation that the AS layer of the UE-1 receives the parameters of the voice bearer sent by the eNB, and specifically:

AS shown in fig. 6, the AS layer of UE-1 receives a message for establishing a voice bearer, e.g., a RRC reconfiguration message, in which AS layer parameters corresponding to the voice bearer, e.g., a priority bit rate (prioritised Bit Rate), are included.

The AS layer of the UE-1 sends AS layer parameters to the IMS layer, and the IMS layer judges whether the parameters of the voice bearing are matched with the parameters of the IMS layer according to the AS layer parameters; or,

the AS layer of the UE-1 sends AS layer parameters to an NAS layer, the NAS layer obtains parameters of voice bearing according to the AS layer parameters, the NAS layer sends the NAS layer parameters to an IMS layer, and the IMS layer judges whether the parameters of the voice bearing are matched with the parameters of the IMS layer according to the NAS layer parameters.

If the IMS layer judges that the bearing parameter is not matched with the IMS layer parameter, the UE-1 initiates an IMS session renegotiation request, and the session renegotiation request contains the IMS parameter corresponding to the voice bearing parameter.

Wherein the IMS session renegotiation request in step 24 may be a SIP re-Invite (re-Invite) request or a SIP update (update) request. Step 24 may be sent before step 22 or after step 22, if sent before step 22, the UE-1 renegotiates via a SIP update message, and if sent after step 22, via a SIP re-Invite message.

Wherein GBR or MBR parameters among bearer parameters and b of IMS layer: the parameters of the AS may not be uniform. The two may have a correspondence. For example, b: the AS is used to describe the rate used by the Real-time transport protocol (Real-time Transport Protocol, RTP) of the voice media, and the GBR or MBR parameters describe the sum of the RTP of the voice media and the rate used by the Real-time transport control protocol (Real-time Transport Control Protocol, RTCP), where the rate used by RTCP may be a fixed value.

The IMS layer of the UE-1 judges whether the parameters of the voice bearing are matched with the parameters of the IMS layer, and if the IMS layer judges that the absolute value of the difference value between the parameters of the voice bearing and the parameters of the IMS layer is larger than a preset value, the parameters of the voice bearing and the parameters of the IMS layer are not matched; if the IMS layer judges that the absolute value of the difference value between the voice bearing parameter and the IMS layer parameter is smaller than the preset value, the IMS layer judges that the voice bearing parameter and the IMS layer parameter are matched.

Step 24: the UE-1 initiates an IMS session renegotiation request, and the session renegotiation request contains IMS parameters corresponding to the parameters of the voice bearer.

Optionally, the IMS session renegotiation request in step 24 may be issued to the IMS network over the 4G network.

Step 25: and sending the session renegotiation request to the UE-2.

Steps 26-27: the UE-2 replies 200OK, carrying the result of the negotiation.

Referring to fig. 7, an embodiment of the present application provides an apparatus for communication processing, which is applied to a first core network device, and the apparatus 700 includes:

a first receiving module 701, configured to receive a first message, where the first message is used to request a roaming network to establish a first bearer for a terminal;

a determining module 702, configured to determine whether a parameter of the first bearer included in the first message matches a bearer parameter supported by the roaming network;

a modifying module 703, configured to modify, in case of mismatch, the parameters of the first bearer according to the bearer parameters supported by the roaming network;

A first sending module 704, configured to send a second message, where the second message carries the modified parameter of the first bearer.

In one embodiment of the present application, the apparatus further comprises:

and the determining module is used for determining that the first bearer is at least one of a voice bearer and a video bearer.

In an embodiment of the present application, the roaming destination network is a first standard network, and the first core network device belongs to the first standard network.

Optionally, the first sending module 704 is further configured to: and sending the second message to the terminal and/or the access network equipment of the first standard network.

Optionally, the first message is received by the first core network device during a process that the terminal falls back from the second system network to the first system network.

Optionally, the first core network device includes: a mobility management entity.

In another embodiment of the present application, the roaming destination network is a second standard network, and the first core network device belongs to the second standard network.

Optionally, the first sending module 704 is further configured to: and sending the second message to access network equipment of the second standard network and/or second core network equipment of the second standard network.

Optionally, the second core network device includes: access and mobility management functions.

Optionally, the first core network device includes: at least one of session management functions, access and mobility management functions.

In one embodiment of the present application, the apparatus 700 further comprises:

and the receiving module is used for receiving the first message.

In one embodiment of the present application, the parameter of the first bearer includes at least one of a guaranteed bit rate and a maximum bit rate corresponding to the first bearer.

The device provided in this embodiment of the present application can implement each process implemented by the method embodiment of fig. 3, and achieve the same technical effects, so that repetition is avoided, and details are not repeated here.

Referring to fig. 8, fig. 8 is a block diagram of a core network device to which an embodiment of the present invention is applied, and as shown in fig. 8, a communication device 800 includes: a processor 801, a transceiver 802, a memory 803, and a bus interface, wherein the processor 801 may be responsible for managing the bus architecture and general processing. The memory 803 may store data used by the processor 801 in performing operations.

In one embodiment of the present invention, the communication device 800 further comprises: a program stored in the memory 803 and executable on the processor 801, which when executed by the processor 801, performs the steps in the method shown in fig. 3 above.

Specifically, the transceiver 802 is configured to receive a first message, where the first message is used to request that a roaming network establish a first bearer for a terminal;

a processor 801, configured to determine whether a parameter of the first bearer included in the first message matches a bearer parameter supported by the roaming network; under the condition of no match, modifying the parameters of the first bearer according to the bearer parameters supported by the roaming network;

transceiver 802 is also configured to send a second message carrying the modified parameters of the first bearer.

Optionally, the processor 801 is further configured to determine that the first bearer is at least one of a voice bearer and a video bearer.

Optionally, the transceiver 802 is further configured to send the second message to the terminal and/or the access network device of the first standard network.

Optionally, the transceiver 802 is further configured to send the second message to an access network device of the second standard network and/or a second core network device of the second standard network.

Optionally, the processor 801 is further configured to accept the first message.

In fig. 8, a bus architecture may be comprised of any number of interconnected buses and bridges, and in particular, one or more processors represented by the processor 801 and various circuits of the memory represented by the memory 803. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 802 may be a number of elements, i.e., including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium.

Optionally, as shown in fig. 9, the embodiment of the present application further provides a communication device 900, including a processor 901 and a memory 902, where the memory 902 stores a program or an instruction that can be executed on the processor 901, for example, when the communication device 900 is a terminal, the program or the instruction is executed by the processor 901 to implement each step of the method embodiment of fig. 3, and when the communication device 900 is a core network device, the program or the instruction is executed by the processor 901 to implement each step of the method embodiment of fig. 3 and achieve the same technical effect, which is not repeated 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 method of fig. 3 and each process of each embodiment described above are implemented, and the same technical effects can be achieved, so that repetition is avoided, and no further description is provided herein.

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, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, to implement each process of each method embodiment shown in fig. 3 and described above, and to achieve the same technical effect, so that repetition is avoided, and no further description is given 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 stored in a storage medium, where the computer program/program product is executed by at least one processor to implement the respective processes of the respective method embodiments shown in fig. 3 and described above, and achieve the same technical effects, and are not repeated herein.

The embodiment of the present application further provides a communication system, where the communication system includes a terminal and a core network device, and the core network device is configured to execute each process of the embodiments of the method shown in fig. 3 and described above, and achieve the same technical effects, so that repetition is avoided, and no further description is given here.

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 method of communication processing, comprising:

2. The method of claim 1, wherein before the first core network device modifies the parameters of the first bearer according to the bearer parameters supported by the roaming network, the method further comprises:

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

3. A method according to claim 1 or 2, wherein the first message is received by the first core network device during a fallback of the terminal from the second-system network to the first-system network.

4. A method according to claim 3, wherein the roaming destination network is the first standard network, and the first core network device belongs to the first standard network.

5. The method of claim 4, wherein the first core network device sending the second message comprises:

and the first core network equipment sends the second message to the terminal and/or the access network equipment of the first standard network.

6. The method according to any of claims 3-5, wherein the first core network device comprises: a mobility management entity.

7. The method according to claim 1 or 2, wherein the roaming destination network is a second standard network, and the first core network device belongs to the second standard network.

8. The method of claim 7, wherein the first core network device sending the second message comprises:

And the first core network equipment sends the second message to the access network equipment of the second standard network and/or the second core network equipment of the second standard network.

9. The method of claim 8, wherein the second core network device comprises: access and mobility management functions.

10. The method according to any of claims 7-9, wherein the first core network device comprises: at least one of session management functions, access and mobility management functions.

11. The method according to any of claims 1 to 10, wherein before the first core network device modifies the parameters of the first bearer according to the bearer parameters supported by the roaming place network, the method further comprises:

the first core network device accepts the first message.

12. The method according to any of claims 1-11, wherein the parameters of the first bearer comprise at least one of a guaranteed bit rate, a maximum bit rate, corresponding to the first bearer.

13. An apparatus for communication processing, applied to a first core network device, comprising:

14. The apparatus of claim 13, wherein the apparatus further comprises:

15. The apparatus according to claim 13 or 14, wherein the first message is received by the first core network device during a fallback of the terminal from the second-system network to the first-system network.

16. The apparatus of claim 15, wherein the roaming destination network is the first standard network, and wherein the first core network device belongs to the first standard network.

17. The apparatus of claim 16, wherein the first transmission module is further configured to: and sending the second message to the terminal and/or the access network equipment of the first standard network.

18. The apparatus according to claim 13 or 14, wherein the roaming destination network is a second standard network, and the first core network device belongs to the second standard network.

19. The apparatus of claim 18, wherein the first transmission module is further configured to:

and sending the second message to access network equipment of the second standard network and/or second core network equipment of the second standard network.

20. The apparatus according to any one of claims 14-19, wherein the apparatus further comprises:

and the receiving module is used for receiving the first message.

21. A communication device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor implements the steps of the method of any one of claims 1 to 13.

22. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by a processor, implement the steps of the method according to any of claims 1 to 13.