CN115515087A

CN115515087A - Session establishment method, device, apparatus and storage medium

Info

Publication number: CN115515087A
Application number: CN202110700105.8A
Authority: CN
Inventors: 朱淑真; 应晖
Original assignee: Datang Mobile Communications Equipment Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2021-06-23
Filing date: 2021-06-23
Publication date: 2022-12-23

Abstract

The embodiment of the application provides a session establishment method, equipment, a device and a storage medium, the method is used for access network equipment, the access network equipment provides network service for a first terminal, the first terminal comprises a calling terminal and/or a called terminal in session establishment, and the method comprises the following steps: determining that a first bearer is established between a first terminal and access network equipment, wherein the first bearer is a radio bearer for transmitting Session Initiation Protocol (SIP) signaling; determining that a second bearer needs to be established between the first terminal and the access network equipment, wherein the second bearer is a radio bearer for transmitting a voice call or a video call; setting a priority identifier for the first terminal, wherein the priority identifier is used for representing that the priority for establishing the second bearer is the highest; and establishing a second bearer according to the priority identifier. Therefore, the method and the device reduce the connection delay of the voice call or the video call and also improve the user experience of the voice call or the video call.

Description

Session establishing method, device, apparatus and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a session establishment method, device, and apparatus, and storage medium.

Background

In a New Radio (NR) system, voice call and video call services may be provided based on an Internet Protocol Multimedia system (IMS).

However, in an independent networking (SA) scenario of the NR system, when a calling terminal initiates a voice call or a video call, a session establishment procedure may be covered by a handover procedure or other service concurrent flows, so that a connection delay of the voice call or the video call is affected.

Disclosure of Invention

Embodiments of the present application provide a session establishment method, device, apparatus, and storage medium, so as to solve a defect that a session establishment process may be covered by a handover process or other service concurrent processes in the prior art, thereby affecting a connection delay of a voice call or a video call, and reduce the connection delay of the voice call or the video call, thereby improving user experience of the voice call or the video call.

In a first aspect, an embodiment of the present application provides a session establishment method, where the method is used for an access network device, where the access network device provides a network service for a first terminal, and the first terminal includes a calling terminal and/or a called terminal during session establishment, and the method includes:

determining that a first bearer has been established between the first terminal and the access network device, wherein the first bearer is a radio bearer for transmitting Session Initiation Protocol (SIP) signaling;

determining that a second bearer needs to be established between the first terminal and the access network device, wherein the second bearer is a radio bearer used for transmitting a voice call or a video call;

setting a priority identifier for the first terminal, wherein the priority identifier is used for representing that the priority for establishing the second bearer within set time is the highest;

and establishing the second bearer according to the priority identifier.

Optionally, the session establishing method according to an embodiment of the present application further includes:

starting a timer, wherein the duration of the timer is the set time;

and if the timer is not overtime and receives the measurement report sent by the first terminal, caching the measurement report according to the priority identification.

Optionally, according to the session establishing method in an embodiment of the present application, the determining that the first bearer is established between the first terminal and the access network device includes:

and if receiving a Protocol Data Unit (PDU) session resource setting request message sent by core network equipment, determining that the first bearer is established between the first terminal and the access network equipment according to the PDU session resource setting request message.

and if the PDU session resource setting request message sent by the core network equipment is not received, determining that the first bearer is not established between the first terminal and the access network equipment.

Optionally, according to the session establishment method of an embodiment of the present application, the determining that a second bearer needs to be established between the first terminal and the access network device includes:

acquiring SIP signaling loaded on the first load;

determining the length of uplink data and the length of downlink data of the first bearer according to the SIP signaling;

and if at least one of the uplink data length and the downlink data length is greater than or equal to a set threshold, determining that the second bearer needs to be established between the first terminal and the access network equipment.

Optionally, according to the session establishment method in an embodiment of the present application, the SIP signaling carried on the first bearer includes a first SIP signaling sent by the first terminal through the access network device and a second SIP signaling received by the first terminal through the access network device;

the determining the uplink data length and the downlink data length of the first bearer according to the SIP signaling includes:

determining the uplink data length of the first bearer according to the first SIP signaling;

and determining the downlink data length of the first bearer according to the second SIP signaling.

and if the uplink data length and the downlink data length are both smaller than the set threshold, determining that the second bearer does not need to be established between the first terminal and the access network equipment.

In a second aspect, an embodiment of the present application further provides an access network device, where the access network device provides a network service for a first terminal, where the first terminal includes a calling terminal and/or a called terminal during session establishment, and the access network device includes a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and implementing the steps of the session establishment method according to the first aspect as described above.

In a third aspect, an embodiment of the present application provides a session establishment apparatus, where the apparatus is used for an access network device, where the access network device provides a network service for a first terminal, and the first terminal includes a calling terminal and/or a called terminal in session establishment, and the session establishment apparatus includes:

a first determining unit, configured to determine that a first bearer has been established between the calling terminal and the called terminal, where the first bearer is a radio bearer used for transmitting session initiation protocol SIP signaling;

a second determining unit, configured to determine that a second bearer needs to be established between the calling terminal and the called terminal, where the second bearer is a radio bearer used for transmitting a voice call or a video call;

a setting unit, configured to set a priority identifier for the first terminal, where the priority identifier is used to indicate that the priority for establishing the second bearer within a set time is the highest;

and the establishing unit is used for establishing the second bearer according to the priority identifier.

In a fourth aspect, embodiments of the present application provide a processor-readable storage medium storing a computer program, which is configured to cause a processor to execute the steps of the session establishment method according to the first aspect.

According to the session establishing method, the session establishing equipment, the session establishing device and the storage medium, when a first bearer is established between a first terminal and access network equipment and a second bearer needs to be established, a priority identification can be set for the first terminal, the priority identification is used for representing that the priority for establishing the second bearer is the highest, and the second bearer is established according to the priority identification.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following descriptions are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is one of the flow diagrams of a calling terminal voice call completion process;

FIG. 2 is a second flowchart illustrating a voice call completion procedure of the calling terminal;

fig. 3 is a flowchart illustrating a voice call completion procedure of a called terminal;

FIG. 4 is a second flowchart of a voice call completing process of the called terminal;

fig. 5 is a flowchart illustrating a session establishment method according to an embodiment of the present application;

fig. 6 is a second flowchart illustrating a session establishment method according to an embodiment of the present application;

fig. 7 is a third schematic flowchart of a session establishment method according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a session establishing apparatus according to an embodiment of the present application;

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

Detailed Description

In the embodiment of the present application, the term "and/or" describes an association relationship of associated objects, and means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.

In the embodiments of the present application, the term "plurality" means two or more, and other terms are similar thereto.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In an independent networking (SA) scenario of an NR system, when a calling terminal initiates a voice call or a video call, the calling terminal first constructs a Session Initiation Protocol (SIP) request message (carrying a number of the calling and called terminals, a media type and a code supported by the calling terminal, etc.); after the calling terminal enters the connected state, the calling terminal sends the SIP request message to the called terminal on a bearer of 5QI (Quality of service identifier) = 5. After receiving the SIP request message, the called terminal sends a provisional response message (i.e., SIP Trying 100) to the calling terminal, where the provisional response message (i.e., SIP Trying 100) is used to stop the calling terminal from retransmitting the SIP request message. After receiving the temporary response message (i.e., SIP Trying 100), the calling terminal starts to establish a flow (flow) of 5qi =1 (i.e., voice call setup procedure) or 5qi =2 (i.e., video call setup procedure) with the wireless side. If the switching process occurs in the calling terminal before the flow (flow) of the 5qi =1 or 5qi =2 is established, the establishment of the 5qi =1 or 5qi =2 of the calling terminal is influenced, and therefore the voice call connection delay is influenced.

Such as: the process of calling terminal voice call completion as shown in fig. 1 specifically includes:

1. radio Resource Control (RRC) connection establishment

1. The calling terminal sends a Radio Resource Control (RRC) setting Request, i.e., an RRC Setup Request, to the access network device.

2. The access network device sends an RRC Setup, i.e. an RRC Setup, to the calling terminal.

3. The calling terminal sends RRC Setup Complete, namely RRC Setup Complete, to the access network equipment.

4. The access network equipment sends an Initial UE Message (Service Request) to the core network equipment

2. Non Access Stratum (NAS) signaling interaction

5. The core network device sends a Downlink NAS Transport (Authentication/security) message, i.e., downlink NAS Transport (Authentication/security), to the access network device.

6. The access network equipment sends downlink information transmission to the calling terminal, i.e.

DownlinkInformationTransfer。

7. The calling terminal sends uplink information transfer to the access network equipment, i.e.

Uplink InformationTransfer。

8. The access network device sends an Uplink NAS Transport (Authentication/security), i.e., uplink NAS Transport, to the core network device.

3. UE context establishment

9. The core network device sends an Initial Context Setup Request (Service Accept), i.e., an Initial Context Setup Request (Service Accept), to the access network device.

10. And the access network equipment sends the UE Capability requirement, namely UE Capability Enquriy, to the calling terminal.

11. The calling terminal sends UE Capability Information, namely UE Capability Information, to the access network equipment.

12. And the access network equipment sends UE Capability Information, namely UE Capability Information, to the core network equipment.

13. The access network equipment sends an RRC Security Mode Command, namely an RRC Security Mode Command to the calling terminal.

14. The calling terminal sends RRC Security Mode completion, namely RRC Security Mode Complete, to the access network equipment.

15. The access network device sends an RRC Reconfiguration, i.e. an RRC Reconfiguration, to the calling terminal.

16. The calling terminal sends RRC Reconfiguration Complete, i.e., RRC Reconfiguration Complete, to the access network device.

17. The access network equipment sends an Initial context setting Response, namely Initial Contex Setup Response, to the core network equipment.

4. Service establishment

18. The core network device sends a Protocol Data Unit (PDU) Session Resource setting request, i.e., PDU Session Resource Setup Req (5qi = 5), to the access network device.

19. The access network device sends an RRC Reconfiguration, i.e. an RRC Reconfiguration, to the calling terminal.

20. The calling terminal sends RRC Reconfiguration Complete, i.e., RRC Reconfiguration Complete, to the access network device.

21. The access network equipment sends a PDU Session Resource Setup Response, namely PDU Session Resource Setup Response, to the core network equipment.

22. The calling terminal sends a SIP Invite Request, i.e. a SIP Invite Request, to the IMS.

23. The IMS sends a SIP Invite response 100, i.e., a SIP Invite Trying100, to the calling terminal.

24. The core network device sends a PDU Session Resource modification Request, i.e. PDU Session Resource modification Request (5qi = 1), to the access network device.

25. The access network device sends an RRC Reconfiguration, i.e. an RRC Reconfiguration, to the calling terminal.

26. The calling terminal sends RRC Reconfiguration Complete, i.e., RRC Reconfiguration Complete, to the access network device.

27. The access network equipment sends a PDU Session Resource modification Response, namely PDU Session Resource modification Response, to the core network equipment.

As can be seen, after the calling terminal receives the SIP Invite response 100 (i.e., the SIP Invite Trying 100), after the access network device (e.g., the base station) receives a PDU Session Resource modification Request (i.e., a PDU Session Resource modification Request (5qi = 1)) sent by the core network device, a flow (flow) of 5qi =1, that is, a voice call setup procedure, starts to be established between the calling terminal and the access network device (e.g., the base station).

Another example is as follows: as shown in fig. 2, after the calling terminal receives the SIP Invite response 100 (i.e., SIP Invite Trying 100), if the calling terminal reports a measurement report to the access network device (e.g., a base station) at this time, but the access network device (e.g., the base station) has not received a PDU Session Resource modification Request message (i.e., PDU Session Resource modification Request (5 qi =) sent by the core network device), the access network device (e.g., the base station) starts to process a handover procedure according to a first-come-first-process principle, actually, the calling terminal waits for a voice call setup procedure, i.e., the setup of the 5qi =1, and is interrupted by the handover procedure, so that there is no PDU Session Resource modification Request message behind the access network device or the call procedure is ended early, thereby affecting a voice call connection delay.

Similarly, for the called terminal, before the called terminal establishes a flow (flow) of 5qi =1 or 5qi =2, if a handover process occurs, the establishment of the 5qi =1 or 5qi =2 of the called terminal is affected, and thus the voice call or video call connection delay is affected.

Such as: as shown in fig. 3, after the called terminal sends the SIP Invite response 183 (i.e. SIP Invite 183), the access network device (e.g. the base station) starts to establish a flow (flow) of 5qi =1, i.e. a voice call establishment procedure, between the called terminal and the access network device (e.g. the base station) after receiving the PDU Session Resource modification Request message (i.e. PDU Session Resource modification Request (5 qi = 1)) sent by the core network device.

For another example: as shown in fig. 4, after the called terminal sends another SIP Invite response message (i.e., SIP Invite 183), if the called terminal reports a measurement report to the access network device (e.g., a base station) but the access network device (e.g., the base station) does not receive a PDU Session Resource modification Request (i.e., PDU Session Resource modification Request (5 qi = 1)) sent by the core network device, the access network device (e.g., the base station) starts to process a handover procedure according to a first-come-first-handle principle, and actually the called terminal waits for a voice call setup procedure, i.e., the setup of the 5qi = =1, and is interrupted by the handover procedure, so that there is no PDU Session Resource modification Request message behind the access network device or the call procedure is ended early, thereby affecting a voice call connection delay.

Therefore, the embodiment of the application provides a session establishment method, device, apparatus and storage medium, by setting a priority identifier for a calling terminal and/or a called terminal, that is, by preferentially executing a voice call establishment procedure or a video call establishment procedure, a voice call or video call connection delay is reduced, and a voice user experience or a video call user experience is improved.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

The technical scheme provided by the embodiment of the application can be suitable for various systems, especially 5G systems. For example, suitable systems may be global system for mobile communications (GSM) systems, code Division Multiple Access (CDMA) systems, wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) systems, long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, long term evolution (long term evolution) systems, LTE-a systems, universal mobile systems (universal mobile telecommunications systems, UMTS), universal internet Access (world interoperability for microwave Access (WiMAX) systems, new Radio interface (NR) systems, etc. These various systems include terminal devices and network devices. The System may further include a core network portion, such as an Evolved Packet System (EPS), a 5G System (5 GS), and the like.

The access network device according to the embodiment of the present application may be a base station, and the base station may include a plurality of cells for providing services to a terminal. A base station may also be called an access point, or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or by other names, depending on the particular application. The network device may be configured to exchange received air frames and Internet Protocol (IP) packets with one another as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communications network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a Base Transceiver Station (BTS) in a Global System for Mobile communications (GSM) or a Code Division Multiple Access (CDMA), a network device (NodeB) in a Wideband Code Division Multiple Access (WCDMA), an evolved Node B (eNB) or an e-NodeB) in a Long Term Evolution (LTE) System, a 5G Base Station (gNB) in a 5G network architecture (next generation System), a Home evolved Node B (HeNB), a relay Node (relay Node), a Home Base Station (femto), a pico Base Station (pico), and the like, which are not limited in the embodiments of the present application. In some network configurations, a network device may include Centralized Unit (CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

The terminal device referred to in the embodiments of the present application may refer to a device providing voice and/or data connectivity to a user, a handheld device having a wireless connection function, or another processing device connected to a wireless modem. In different systems, the names of the terminal devices may be different, for example, in a 5G system, the terminal device may be referred to as a User Equipment (UE). A wireless terminal device, which may be a mobile terminal device such as a mobile phone (or called a "cellular" phone) and a computer having a mobile terminal device, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device, may communicate with one or more Core Networks (CNs) via a Radio Access Network (RAN), and may exchange languages and/or data with the RAN. Examples of such devices include Personal Communication Service (PCS) phones, cordless phones, session Initiation Protocol (SIP) phones, wireless Local Loop (WLL) stations, personal Digital Assistants (PDAs), and the like. The wireless terminal device may also be referred to as a system, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile), a remote station (remote station), an access point (access point), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device), which are not limited in this embodiment of the present application.

Fig. 5 is a flowchart of a session establishment method provided in an embodiment of the present application, where the session establishment method may be used for an access network device, for example: and a base station. The access network equipment provides network service for a first terminal, and the first terminal comprises a calling terminal and/or a called terminal in session establishment. As shown in fig. 5, the session establishment method may include the following steps:

step 501, determining that a first bearer is established between the first terminal and the access network device, where the first bearer is a radio bearer for transmitting SIP signaling.

Specifically, if the first terminal is a calling terminal, before the calling and called terminals initiate a voice call or video call setup procedure, the calling terminal and the access network device may establish a radio bearer for transmitting SIP signaling, that is, the establishment of 5qi = 5.

If the first terminal is a called terminal, before the calling and called terminals initiate a voice call or video call establishment procedure, the called terminal also establishes a radio bearer for transmitting SIP signaling with the access network device, that is, the establishment of 5qi = 5.

If the first terminals are the calling terminal and the called terminal, before the calling terminal and the called terminal initiate a voice call or video call establishment procedure, both the calling terminal and the called terminal establish a radio bearer for transmitting SIP signaling with the access network device, that is, the establishment of 5qi = 5.

The SIP signaling transmitted on the first bearer may include the SIP signaling in fig. 1 to fig. 4, such as: SIP Invite Request (i.e., SIP Invite Request), SIP Invite response 100 (i.e., SIP Trying 100), SIP Invite response 183 (i.e., SIP Invite 183), and the like.

Step 502, it is determined that a second bearer needs to be established between the first terminal and the access network device, where the second bearer is used for transmitting a radio bearer for a voice call or a video call.

Specifically, a second bearer is established between the first terminal and the access network device, which refers to the establishment of a radio bearer for a voice call, that is, the establishment of 5qi = 1; or to set up a radio bearer for a video call, i.e. the set-up of 5qi = 2.

The determination of whether the second bearer needs to be established between the first terminal and the access network device may be based on SIP signaling transmitted over the first bearer.

Step 503, setting a priority identifier for the first terminal, where the priority identifier is used to indicate that the priority for establishing the second bearer is the highest within the set time.

Specifically, the set time may be a preset time value, such as: the set time is a time value preset by the access network equipment. For another example: the value range of the set time is 1ms to 10000ms.

In order to ensure that the calling and called terminals initiate voice calls or the video call establishment process is not interrupted by other processes, a priority identifier is set for the terminal needing to establish the second bearer, so that the establishment process of the second bearer is not covered by other switching processes or other service concurrent processes before the second bearer is established.

And step 504, establishing a second bearer according to the priority identifier.

Specifically, for the first terminal with the priority identifier set, only the second bearer may be preferentially established within a certain time, without processing other handover procedures or other service concurrent flows.

As can be seen from the above embodiments, when a first bearer is established between a first terminal and an access network device and a second bearer needs to be established, a priority identifier may be set for the first terminal, where the priority identifier is used to indicate that the priority for establishing the second bearer is the highest, and the second bearer is established according to the priority identifier, so that in the process of establishing the second bearer, the second bearer is not interrupted by other flows, thereby avoiding the influence of other flows on establishing the second bearer, reducing the connection delay of a voice call or a video call, and further improving the user experience of the voice user or the video call.

Optionally, the session establishment method may further include the following steps:

starting a timer, wherein the duration of the timer is the set time;

if the timer is not overtime and receives the measurement report sent by the first terminal, caching the measurement report according to the priority mark.

Specifically, after the priority identifier is set for the first terminal, the timer may be started, and before the timer expires, regardless of the process that needs to be executed according to any other principle, the process is not processed any more, and the establishment of the second bearer is preferentially executed.

However, if the timer has timed out and the measurement report sent by the first terminal is received, the measurement report may be processed and a subsequent handover procedure may be performed.

As can be seen from the above embodiments, the timer may be started, so that the establishment process of the second bearer is not interrupted by other procedures within the set time, thereby improving the reliability of session establishment.

Optionally, the determining that the first bearer is established between the first terminal and the access network device includes:

Specifically, as shown in fig. 1 to 4, the access network device receives the PDU session resource setting request message sent by the core network device, that is, the access network device detects the establishment procedure of 5qi = 5.

It can be seen from the foregoing embodiments that the first bearer can be determined to have been established between the first terminal and the access network device through the PDU session resource setup request message sent by the core network device, thereby improving the efficiency of determining the first bearer.

Specifically, if the access network device does not receive the PDU session resource setting request message sent by the core network device, it indicates that the access network device does not detect the establishment procedure of 5qi = 5.

It can be seen from the foregoing embodiments that, it may be determined whether the first bearer is established between the first terminal and the access network device through the PDU session resource setting request message sent by the core network device, so that flexibility of determining the first bearer is improved.

Optionally, the determining that a second bearer needs to be established between the first terminal and the access network device includes:

acquiring SIP signaling loaded on the first load;

Specifically, between the first bearer and the second bearer, the calling terminal and the called terminal may transmit SIP signaling for session establishment through the first bearer. Such as: the SIP Invite Request (i.e., SIP Invite Request), the SIP Invite response 100 (i.e., SIP Trying 100), the SIP Invite response 183 (i.e., SIP Invite 183), etc. in fig. 1 to 4 are signaled.

In order to accurately determine whether the second bearer needs to be established between the first terminal and the access network device, the uplink data length and the downlink data length of the first bearer may be determined according to the SIP signaling, and it is finally determined whether the second bearer needs to be established according to a size relationship between the uplink data length and the downlink data length of the first bearer.

Such as: and if the length of the uplink data is greater than or equal to the set threshold, determining that a second bearer needs to be established.

For another example: and if the uplink data length and the downlink data length are both greater than or equal to the set threshold, determining that a second bearer needs to be established.

Another example is as follows: and if the length of the downlink data is greater than or equal to the set threshold, determining that a second bearer needs to be established.

As can be seen from the above embodiments, the uplink data length and the downlink data length of the first bearer may be determined through SIP signaling, and whether the second bearer needs to be established is finally determined through the size relationship between the uplink data length and the downlink data length of the first bearer, so that the accuracy of determining the second bearer is improved.

Optionally, the SIP signaling carried on the first bearer includes a first SIP signaling sent by the first terminal through the access network device and a second SIP signaling received by the first terminal through the access network device;

Specifically, the first SIP signaling may be a SIP Invite Request (i.e., SIP Invite Request), and the second SIP signaling may be a SIP Invite response 100 (i.e., SIP Invite Trying 100).

Such as: the first terminal is a calling terminal, the calling terminal sends an SIP Invite Request (i.e., SIP Invite Request) to the core network device, and the SIP Invite Request is transmitted through an access network device (e.g., a base station), and at this time, when the access network device (e.g., the base station) receives an SIP Invite Request (i.e., SIP Invite Request) message, the length of uplink data of the first bearer is, that is, the length of uplink data of 5qi =5.

For another example: the first terminal is a calling terminal, and the calling terminal receives the SIP Invite response 100 (i.e., SIP Invite Trying 100) and transmits the SIP Invite response 100 through an access network device (e.g., a base station), where at this time, the access network device (e.g., the base station) receives a SIP Invite response 100 (i.e., SIP Invite Trying 100) message, which is the downlink data length of the first bearer, that is, the downlink data length of 5qi = 5.

As can be seen from the foregoing embodiments, the uplink data length and the downlink data length of the first bearer may be determined through different SIP signaling, so that flexibility in determining the uplink data length and the downlink data length of the first bearer is improved.

Optionally, the method further comprises:

As can be seen from the foregoing embodiments, whether the second bearer needs to be established may be finally determined through the size relationship between the uplink data length and the downlink data length of the first bearer, so that the accuracy of determining the second bearer is improved.

The above session establishment procedure is specifically described below by two embodiments:

in the first embodiment, as shown in fig. 6:

the access network device (e.g., base station) may determine whether there is an establishment of 5qi = 5. If so, the length of uplink and downlink data of 5qi =5 can be detected. The access network equipment judges whether the lengths of the uplink and downlink data of 5QI =5 are both smaller than a set threshold value, and if not, the access network equipment can set a priority identifier for the calling UE and/or the called UE.

Example two, as shown in fig. 7:

after the access network equipment sets the priority identification, a timer can be started, if the timer is not overtime, a UE measurement report is received at the moment, and the UE measurement report is cached; if the timer is over time and a UE measurement report is received at this time, the UE measurement report may be processed.

As can be seen from the above embodiments, after the calling and called UEs establish the 5qi =5, protective measures are taken in a time range with respect to the calling and called UEs, so as to prevent the establishment process of the 5qi =1or the 5qi =2 from being covered by a handover process or other service concurrency processes, reduce the connection delay of the calling and called UEs, and thereby improve the experience perception of Voice over NR (VoNR) users based on NR.

Fig. 8 is a schematic structural diagram of a session establishing apparatus according to an embodiment of the present application, where the session establishing apparatus may be used in the session establishing method shown in fig. 5, fig. 6, or fig. 7; as shown in fig. 8, the session establishing means may include:

a first determining unit 81, configured to determine that a first bearer is established between the calling terminal and the called terminal, where the first bearer is a radio bearer for transmitting session initiation protocol SIP signaling;

a second determining unit 82, configured to determine that a second bearer needs to be established between the calling terminal and the called terminal, where the second bearer is a radio bearer used for transmitting a voice call or a video call;

a setting unit 83, configured to set a priority identifier for the first terminal, where the priority identifier is used to indicate that the priority for establishing the second bearer is the highest within a set time;

an establishing unit 84, configured to establish the second bearer according to the priority identifier.

Further, on the basis of the above device, the method further includes:

the starting unit is used for starting a timer, and the duration of the timer is the set time;

and the caching unit is used for caching the measurement report according to the priority mark if the timer is not overtime and the measurement report sent by the first terminal is received.

Further, based on the foregoing apparatus, the first determining unit 81 is specifically configured to:

Further, based on the above device, the method further comprises:

a third determining unit, configured to determine that the first bearer is not established between the first terminal and the access network device if the PDU session resource setup request message sent by the core network device is not received.

Further, based on the above device, the second determining unit 82 includes:

an obtaining subunit, configured to obtain an SIP signaling carried on the first bearer;

a first determining subunit, configured to determine, according to the SIP signaling, an uplink data length and a downlink data length of the first bearer;

a second determining subunit, configured to determine that the second bearer needs to be established between the first terminal and the access network device if at least one of the uplink data length and the downlink data length is greater than or equal to a set threshold.

Further, based on the foregoing apparatus, the SIP signaling carried on the first bearer includes a first SIP signaling sent by the first terminal through the access network device, and a second SIP signaling received by the first terminal through the access network device;

the first determining subunit is specifically configured to:

determining the length of uplink data of the first bearer according to the first SIP signaling;

Further, on the basis of the above device, the method further includes:

a third determining subunit, configured to determine that the second bearer does not need to be established between the first terminal and the access network device if both the uplink data length and the downlink data length are smaller than the set threshold.

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented as a software functional unit and sold or used as a stand-alone product, may be stored in a processor readable storage medium. Based on such understanding, the technical solutions of the present application, which are essential or contributing to the prior art, or all or part of the technical solutions may be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

It should be noted that the apparatus provided in this embodiment of the present application can implement all the method steps implemented by the method embodiment on the network device side, and can achieve the same technical effect, and details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein again.

Fig. 9 is a schematic structural diagram of an access network device according to an embodiment of the present application; the access network device may be configured to perform the session establishment methods illustrated in fig. 5 or fig. 6 or fig. 7. As shown in fig. 9, a transceiver 900 is used for receiving and transmitting data under the control of a processor 910.

Wherein in fig. 9 the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by the processor 910, and various circuits, represented by the memory 920, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 900 may be a number of elements including a transmitter and receiver that provide a means for communicating with various other apparatus over a transmission medium including wireless channels, wired channels, fiber optic cables, and the like. The processor 910 is responsible for managing the bus architecture and general processing, and the memory 920 may store data used by the processor 910 in performing operations.

The processor 910 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a complex 6Programmable Logic Device (CPLD), and may also have a multi-core architecture.

On the other hand, an embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, where the computer program is configured to enable the processor to execute the method provided by each of the foregoing embodiments, and the method includes:

determining that a first bearer is established between a first terminal and access network equipment, wherein the first bearer is a radio bearer for transmitting Session Initiation Protocol (SIP) signaling;

and establishing the second bearer according to the priority identifier.

The processor-readable storage medium can be any available medium or data storage device that can be accessed by a processor, including, but not limited to, magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memories (NAND FLASH), solid State Disks (SSDs)), etc.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. A session establishment method, for an access network device, where the access network device provides a network service for a first terminal, where the first terminal includes a calling terminal and/or a called terminal in the session establishment, and the method includes:

and establishing the second bearer according to the priority identifier.

2. The session establishment method according to claim 1, further comprising:

starting a timer, wherein the duration of the timer is the set time;

3. The session establishment method according to claim 1 or 2, wherein the determining that the first bearer is established between the first terminal and the access network device comprises:

and if a Protocol Data Unit (PDU) session resource setting request message sent by core network equipment is received, determining that the first bearer is established between the first terminal and the access network equipment according to the PDU session resource setting request message.

4. The session establishment method according to claim 3, further comprising:

5. The session establishment method according to claim 1 or 2, wherein the determining that the second bearer needs to be established between the first terminal and the access network device comprises:

acquiring SIP signaling loaded on the first load;

6. The session establishing method according to claim 5, wherein the SIP signaling carried on the first bearer comprises first SIP signaling sent by the first terminal through the access network device and second SIP signaling received by the first terminal through the access network device;

7. The session establishment method according to claim 5, further comprising:

8. An access network device, wherein the access network device provides network services for a first terminal, wherein the first terminal comprises a calling terminal and/or a called terminal in session establishment, and wherein the access network device comprises a memory, a transceiver, and a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

determining that a first bearer is established between the calling terminal and the called terminal, wherein the first bearer is a wireless bearer for transmitting Session Initiation Protocol (SIP) signaling;

determining that a second bearer needs to be established between the calling terminal and the called terminal, wherein the second bearer is a wireless bearer for transmitting voice calls or video calls;

setting a priority identifier for the first terminal, wherein the priority identifier is used for representing that the priority for establishing the second bearer is the highest within set time;

and establishing the second bearer according to the priority identifier.

9. The access network device of claim 8, further comprising the operations of:

starting a timer, wherein the duration of the timer is the set time;

10. The access network device of claim 8 or 9, wherein the determining that the first bearer is established between the first terminal and the access network device comprises:

11. The access network device of claim 10, further comprising the operations of:

12. The access network device according to claim 8 or 9, wherein the determining that the second bearer needs to be established between the first terminal and the access network device comprises:

acquiring SIP signaling loaded on the first load;

13. The access network device of claim 12, wherein the SIP signaling carried on the first bearer comprises first SIP signaling sent by the first terminal through the access network device and second SIP signaling received by the first terminal through the access network device;

14. The access network apparatus of claim 12, further comprising operations of:

15. A session establishing apparatus, where the apparatus is used in an access network device, where the access network device provides a network service for a first terminal, where the first terminal includes a calling terminal and/or a called terminal in the session establishment, and the apparatus includes:

a first determining unit, configured to determine that a first bearer is established between the calling terminal and the called terminal, where the first bearer is a radio bearer used for transmitting session initiation protocol SIP signaling;

16. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 7.