CN113225723B - Method, system and medium for accelerating establishment of emergency service of 5G terminal - Google Patents

Method, system and medium for accelerating establishment of emergency service of 5G terminal Download PDF

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CN113225723B
CN113225723B CN202110365186.0A CN202110365186A CN113225723B CN 113225723 B CN113225723 B CN 113225723B CN 202110365186 A CN202110365186 A CN 202110365186A CN 113225723 B CN113225723 B CN 113225723B
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emergency
service
connection
emergency service
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CN113225723A (en
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薛婧
王良
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Shanghai Institute of Microwave Technology CETC 50 Research Institute
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Shanghai Institute of Microwave Technology CETC 50 Research Institute
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/90—Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/30—Connection release
    • H04W76/34—Selective release of ongoing connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/50—Connection management for emergency connections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Management (AREA)
  • Environmental & Geological Engineering (AREA)
  • Public Health (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method, a system and a medium for accelerating the establishment of an emergency service of a 5G terminal, which comprise the following steps: step S1: when the terminal is carrying out the non-emergency service process, the user initiates an emergency service request, the terminal terminates the current non-emergency service process, releases the connection with the current non-emergency service process, establishes the connection with the current emergency service process and starts to execute the emergency service process; step S2: and when the execution of the current emergency service is finished, releasing the connection of the current emergency service, recovering the connection with the previously terminated normal service flow, and continuously executing the non-emergency service flow. The invention ensures the timeliness and the establishment rapidity of the emergency service; the invention can quickly initiate the emergency service when the user needs the emergency service, thereby ensuring the timeliness and rapidity of the emergency service.

Description

Method, system and medium for accelerating establishment of emergency service of 5G terminal
Technical Field
The invention relates to the technical field of mobile communication, in particular to a method, a system and a medium for accelerating the establishment of emergency services of a 5G terminal.
Background
In cellular mobile communication, emergency service (emergency service) refers to allowing a terminal to connect an emergency call such as a fire alarm, an accident, a medical emergency, a call for help in water, etc. to a nearby emergency service center in time through a simple dialing method (such as 119, 122, 120, 12395, etc.). Emergency services have the highest service priority and in any state (e.g. the terminal is not plugged in a subscriber identity card), as long as the terminal has cellular radio coverage, the emergency service centre should be switched on to get emergency services as soon as possible, whether or not non-emergency services are ongoing.
According to the 3GPP-TS24.501 standard, before a terminal communicates with a core network, a NAS signaling connection must be established (through a Registration process or a Service Request process), during the establishment of the NAS signaling connection for non-emergency services, the core network usually performs an identity authentication process on the terminal and activates security protection (encryption and integrity protection), the establishment of the entire NAS signaling connection lasts for about 6s (including processes of random access, access control, authentication, NAS SMC, AS SMC, and the like), and the specific flow is AS shown in fig. 1. However, the real network environment is usually not perfect, such as the following scenario is encountered in the NAS signaling connection establishment process, which will prolong the establishment time of the entire NAS signaling connection:
1. under the condition of network congestion, the network may open congestion control mechanisms such as random access backoff, RRC connection rejection, UAC access control, etc., which will further prolong the time of establishing NAS signaling connection. (take the RRC connection rejection scenario as an example, fig. 2).
2. When the terminal roams, phenomena such as authentication failure and registration rejection may occur, and the time for establishing the NAS signaling connection may also be prolonged (for example, in a registration rejection scenario, see fig. 3).
Different from a non-emergency service flow, in the process of establishing the NAS signaling connection triggered by the emergency service, the terminal notifies the base station and the core network that the emergency service is currently initiated through the following ways, so that the network can respond to the emergency service request initiated by the terminal with high priority:
(1) Notifying the core network of the emergency type indicated in a REGISTRATION REQUEST MESSAGE (REGISTRATION REQUEST MESSAGE) and a SERVICE REQUEST MESSAGE (SERVICE REQUEST MESSAGE);
(2) Informing a base station of an emergency establishment reason through a connection establishment reason indication of an AS layer;
and according to the 3GPP-TS33.501 standard, aiming at the emergency service process, the network can simplify the safety process, does not need to access the authentication process, adopts the null algorithm for encryption and integrity protection, and ensures that the emergency service request can be responded in time.
According to the 3GPP-TS24.501 standard, the registration process and the service process of the terminal cannot be performed simultaneously, but the processing mode of initiating the emergency service when the terminal is performing the non-emergency service process is not specified. If the non-emergency service flow needs to be completed before the emergency service can be established, the NAS signaling flow establishing process of the non-emergency service flow may need to go through a lengthy bottom link establishing process (contention resolution, congestion control, etc.), a bidirectional security confirmation between the terminal and the network, and the like, which may prolong the NAS signaling connection establishing time of the emergency service, affect the user experience of the emergency service, and even cause serious consequences.
For example, in a location with dense personnel, if an emergency situation occurs, the user needs to initiate an emergency service, and the terminal is performing a periodic location updating procedure. Meanwhile, as people are all making calls, surfing the internet, having high traffic and high network load, unpredictable abnormalities such as access failure are caused, so that the whole location updating process lasts for a long time, and emergency service requests can not be served in time all the time.
The invention provides a method for accelerating the establishment of an emergency service of a 5G terminal, aiming at the problem that the emergency service initiated by the 5G terminal is not timely in the non-emergency service process. In the invention, when a user initiates an emergency service, if a terminal is carrying out a non-emergency service process, the current non-emergency service process is immediately terminated, the emergency service is preferentially established, and the terminated non-emergency service process is recovered after the emergency service is released. The invention realizes the priority and quick establishment of the emergency service and simultaneously ensures the recovery of the non-emergency service.
Patent document CN110881183A (application number: 201811031745.9) discloses an emergency service processing method and apparatus, wherein the emergency service processing method is applied to an access network device to connect a first core network device and a second core network device, and the emergency service processing method may include the following steps: the user terminal determines target core network equipment from the first core network equipment and the second core network equipment, wherein the target core network equipment supports emergency services; and the user terminal initiates emergency service registration to the target core network equipment through the access network equipment. By adopting the embodiment of the application, under the scene that the access network equipment can be connected with a plurality of core network equipment, the frequency of trying to access the core network equipment by the user terminal can be reduced under the condition that the user terminal initiates the emergency service, the time delay of the emergency service is shortened, and the success rate of the emergency service is ensured.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method, a system and a medium for accelerating the establishment of the emergency service of a 5G terminal.
The method for accelerating the establishment of the emergency service of the 5G terminal provided by the invention comprises the following steps:
step S1: when the terminal is carrying out the non-emergency service process, the user initiates an emergency service request, the terminal terminates the current non-emergency service process, releases the connection with the current non-emergency service process, establishes the connection with the current emergency service process and starts to execute the emergency service process;
step S2: and when the execution of the current emergency service is finished, releasing the connection of the current emergency service, recovering the connection with the previously terminated normal service flow, and continuously executing the non-emergency service flow.
Preferably, the terminal includes: NAS business module and AS business module;
the NAS service module comprises a session management module and a mobility management module;
the AS service module comprises an RRC Layer, a Layer2 and a physical Layer.
Preferably, the step S1 includes:
step S1.1: when the terminal is carrying out a non-emergency service process, a user initiates an emergency service request; the NAS business module receives an emergency business processing request, terminates the current non-emergency business process and requests the AS business module to release connection;
step S1.2: the AS service module receives the connection releasing request, releases the connection, switches from a non-idle state to an idle state, and sends connection releasing completion to the NAS service module;
step S1.3: the NAS business module starts to initiate an emergency business process, the AS business module establishes connection and is converted into a non-idle state;
step S1.4: the NAS business module confirms the urgent register is initiated, initiate the urgent business successfully;
and the step of confirming the initiation of the emergency registration comprises the step of interacting the terminal with an air interface message of a network, and when the current interaction process is finished, confirming the initiation of the emergency registration.
Preferably, the step S2 includes:
step S2.1: after the emergency service processing is finished, the NAS service module initiates a registration-removing process, the AS service module releases the connection and switches from a non-idle state to an idle state;
step S2.2: the NAS business module recovers the non-emergency business flow terminated before and requests the AS business module to reestablish connection;
step S2.3: and the AS service module is connected and established, the connection is switched into a non-idle state, a connection establishment confirmation is replied to the NAS service module, and the non-emergency service flow is recovered.
The system for accelerating the establishment of the emergency service of the 5G terminal provided by the invention comprises the following steps:
a module M1: when the terminal is carrying out the non-emergency service process, the user initiates an emergency service request, the terminal terminates the current non-emergency service process, releases the connection with the current non-emergency service process, establishes the connection with the current emergency service process and starts to execute the emergency service process;
a module M2: and when the execution of the current emergency service is finished, releasing the connection of the current emergency service, recovering the connection with the previously terminated normal service flow, and continuously executing the non-emergency service flow.
Preferably, the terminal includes: NAS business module and AS business module;
the NAS business module comprises a session management module and a mobility management module;
the AS service module comprises an RRC Layer, a Layer2 and a physical Layer.
Preferably, said module M1 comprises:
module M1.1: when the terminal is performing a non-emergency service process, a user initiates an emergency service request; the NAS business module receives an emergency business processing request, terminates the current non-emergency business process and requests the AS business module to release connection;
module M1.2: the AS service module receives the connection releasing request, releases the connection, switches from a non-idle state to an idle state, and sends connection releasing completion to the NAS service module;
module M1.3: the NAS business module starts to initiate an emergency business process, the AS business module establishes connection and is converted into a non-idle state;
module M1.4: the NAS business module confirms the initiation of the emergency registration, and then the emergency business is successfully initiated;
and the step of confirming the initiation of the emergency registration comprises the step of interacting the terminal with an air interface message of a network, and when the current interaction process is finished, confirming the initiation of the emergency registration.
Preferably, said module M2 comprises:
module M2.1: after the emergency service processing is finished, the NAS service module initiates a de-registration process, the AS service module releases the connection and switches from a non-idle state to an idle state;
module M2.2: the NAS business module recovers the non-emergency business flow terminated before and requests the AS business module to reestablish connection;
module M2.3: and the AS service module is connected and established, the connection is switched into a non-idle state, a connection establishment confirmation is replied to the NAS service module, and the non-emergency service flow is recovered.
According to the present invention, a computer-readable storage medium is provided, in which a computer program is stored, which, when being executed by a processor, carries out the steps of the method as described above.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention ensures the timeliness and the establishment rapidity of the emergency service; the invention can quickly initiate the emergency service when the user needs, thereby ensuring the timeliness and rapidity of the emergency service;
2. the invention ensures the sustainability of non-emergency services, preferentially responds to emergency services when the non-emergency services and the emergency services conflict, ensures the recovery of the non-emergency services after the emergency services are finished, and ensures the sustainability of the service flow.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a flow chart of non-emergency service NAS signaling establishment;
fig. 2 is a flow chart of RRC connection establishment refused in a process of initiating a registration request by a non-emergency service;
fig. 3 is a flow chart of rejection of a registration request initiated by a non-emergency service by a network;
fig. 4 is a flow chart of emergency service establishment;
fig. 5 is a flowchart of emergency service release.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the invention.
Aiming at the problem that a 3GPP standard 5G terminal needs to consume a long time in a non-emergency service process, the method for accelerating the establishment of the emergency service in the non-emergency service process is innovatively provided. The method and the device achieve the effects of improving the establishment speed of the emergency service, timely recovering the non-emergency service and improving the user experience. The principle followed by the present invention is: when the non-emergency service process is carried out, the access layer is in a non-idle state. And after the emergency service is finished, the NAS service module controls the access layer to return to the idle state from the non-idle state.
Example 1
As shown in fig. 1 to fig. 5, the method for accelerating establishment of an emergency service of a 5G terminal according to the present invention includes:
step S1: when the terminal is carrying out the non-emergency service process, the user initiates an emergency service request, the terminal terminates the current non-emergency service process, releases the connection with the current non-emergency service process, establishes the connection with the current emergency service process and starts to execute the emergency service process;
step S2: and when the execution of the current emergency service is finished, releasing the connection of the current emergency service, recovering the connection with the previously terminated normal service flow, and continuously executing the non-emergency service flow.
Specifically, the terminal includes: according to the 3gpp ts24.501 standard, a Non-Access-Stratum (NAS) includes a Session Management module (Session Management) and a Mobility Management module (Mobility Management), which are collectively referred to as NAS service modules in the method; according to the 3gpp TS 38.300 standard, an Access-Stratum (AS) includes an RRC Layer, a Layer2 (including an SDAP, PDCP, RLC, MAC) and a physical Layer, which are collectively referred to AS an AS service module in the method.
Specifically, the step S1 includes:
step S1.1: when the terminal is carrying out a non-emergency service process, a user initiates an emergency service request; the NAS business module receives an emergency business processing request, terminates the current non-emergency business process and requests the AS business module to release connection;
step S1.2: the AS service module receives the connection release request, releases the connection, switches from a non-idle state to an idle state, and sends connection release completion to the NAS service module;
step S1.3: the NAS business module starts to initiate an emergency business process, the AS business module establishes connection and is converted into a non-idle state;
step S1.4: the NAS business module confirms the initiation of emergency registration and replies 'emergency business initiation confirmation', and then the emergency business is initiated successfully;
the step of confirming the initiation of the emergency registration comprises the step of a series of air interface message interaction processes between the terminal and the network, and when the current interaction process is completed, namely the NAS service module can confirm the success of the initiation of the emergency service, the step of confirming the initiation of the emergency registration is carried out.
Specifically, the step S2 includes:
step S2.1: after the emergency service processing is finished, the NAS service module initiates a de-registration process, the AS service module releases the connection and switches from a non-idle state to an idle state;
step S2.2: the NAS business module recovers the non-emergency business flow terminated before and requests the AS business module to reestablish connection;
step S2.3: and the AS service module completes the connection establishment, switches into a non-idle state, replies a connection establishment confirmation to the NAS service module, and recovers the non-emergency service flow.
The system for accelerating the establishment of the emergency service of the 5G terminal provided by the invention comprises the following steps:
a module M1: when the terminal is carrying out the non-emergency service process, the user initiates an emergency service request, the terminal terminates the current non-emergency service process, releases the connection with the current non-emergency service process, establishes the connection with the current emergency service process and starts to execute the emergency service process;
a module M2: and when the execution of the current emergency service is finished, releasing the connection of the current emergency service, recovering the connection with the previously terminated normal service flow, and continuously executing the non-emergency service flow.
Specifically, the terminal includes: according to the 3gpp ts24.501 standard, a Non-Access-Stratum (NAS) includes a Session Management module (Session Management) and a Mobility Management module (Mobility Management), which are collectively referred to as NAS service modules in the method; according to the 3gpp TS 38.300 standard, the Access-Stratum (AS) includes RRC Layer, layer2 (including SDAP, PDCP, RLC, MAC) and physical Layer, which is referred to AS service module in this method.
Specifically, the module M1 comprises:
module M1.1: when the terminal is carrying out a non-emergency service process, a user initiates an emergency service request; the NAS business module receives an emergency business processing request, terminates the current non-emergency business process and requests the AS business module to release connection;
module M1.2: the AS service module receives the connection releasing request, releases the connection, switches from a non-idle state to an idle state, and sends connection releasing completion to the NAS service module;
module M1.3: the NAS business module starts to initiate an emergency business process, the AS business module establishes connection and is converted into a non-idle state;
module M1.4: the NAS business module confirms the initiation of the emergency registration and replies 'emergency business initiation confirmation', and then the emergency business is initiated successfully;
the step of confirming the initiation of the emergency registration comprises a series of air interface message interaction processes between the terminal and the network, and when the current interaction process is completed, namely the NAS service module can confirm the success of the initiation of the emergency service, the initiation of the emergency registration is confirmed.
In particular, the module M2 comprises:
module M2.1: after the emergency service processing is finished, the NAS service module initiates a de-registration process, the AS service module releases the connection and switches from a non-idle state to an idle state;
module M2.2: the NAS business module recovers the non-emergency business flow terminated before and requests the AS business module to reestablish connection;
module M2.3: and the AS service module is connected and established, the connection is switched into a non-idle state, a connection establishment confirmation is replied to the NAS service module, and the non-emergency service flow is recovered.
According to the present invention, a computer-readable storage medium is provided, in which a computer program is stored, which computer program, when being executed by a processor, carries out the steps of the method as described above.
Those skilled in the art will appreciate that, in addition to implementing the systems, apparatus, and various modules thereof provided by the present invention in purely computer readable program code, the same procedures can be implemented entirely by logically programming method steps such that the systems, apparatus, and various modules thereof are provided in the form of logic gates, switches, application specific integrated circuits, programmable logic controllers, embedded microcontrollers and the like. Therefore, the system, the device and the modules thereof provided by the present invention can be considered as a hardware component, and the modules included in the system, the device and the modules thereof for implementing various programs can also be considered as structures in the hardware component; modules for performing various functions may also be considered to be both software programs for performing the methods and structures within hardware components.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.

Claims (3)

1. A method for accelerating the establishment of 5G terminal emergency services is characterized by comprising the following steps:
step S1: when the terminal is carrying out the non-emergency service process, the user initiates an emergency service request, the terminal terminates the current non-emergency service process, releases the connection with the current non-emergency service process, establishes the connection with the current emergency service process and starts to execute the emergency service process;
step S2: when the execution of the current emergency service is finished, releasing the connection of the current emergency service, recovering the connection with the previously terminated normal service flow, and continuing to execute the non-emergency service flow;
the terminal includes: NAS business module and AS business module;
the NAS service module comprises a session management module and a mobility management module;
the AS service module comprises an RRC Layer, a Layer2 and a physical Layer;
the step S1 includes:
step S1.1: when the terminal is carrying out a non-emergency service process, a user initiates an emergency service request; the NAS business module receives an emergency business processing request, terminates the current non-emergency business process and requests the AS business module to release connection;
step S1.2: the AS service module receives the connection release request, releases the connection, switches from a non-idle state to an idle state, and sends connection release completion to the NAS service module;
step S1.3: the NAS business module starts to initiate an emergency business process, the AS business module establishes connection and is converted into a non-idle state;
step S1.4: the NAS business module confirms the urgent register is initiated, initiate the urgent business successfully;
the step of confirming the initiation of the emergency registration comprises the step of interacting the terminal with an air interface message of a network, and when the current interaction process is completed, confirming the initiation of the emergency registration;
the step S2 includes:
step S2.1: after the emergency service processing is finished, the NAS service module initiates a registration-removing process, the AS service module releases the connection and switches from a non-idle state to an idle state;
step S2.2: the NAS business module recovers the non-emergency business flow terminated before and requests the AS business module to reestablish connection;
step S2.3: and the AS service module is connected and established, the connection is switched into a non-idle state, a connection establishment confirmation is replied to the NAS service module, and the non-emergency service flow is recovered.
2. A system for accelerating the establishment of 5G terminal emergency services is characterized by comprising the following steps:
a module M1: when the terminal is carrying out the non-emergency service process, the user initiates an emergency service request, the terminal terminates the current non-emergency service process, releases the connection with the current non-emergency service process, establishes the connection with the current emergency service process and starts to execute the emergency service process;
a module M2: when the execution of the current emergency service is finished, releasing the connection of the current emergency service, recovering the connection with the previously terminated normal service flow, and continuing to execute the non-emergency service flow;
the terminal includes: NAS business module and AS business module;
the NAS service module comprises a session management module and a mobility management module;
the AS service module comprises an RRC Layer, a Layer2 and a physical Layer;
the module M1 comprises:
module M1.1: when the terminal is performing a non-emergency service process, a user initiates an emergency service request; the NAS business module receives an emergency business processing request, terminates the current non-emergency business process and requests the AS business module to release connection;
module M1.2: the AS service module receives the connection releasing request, releases the connection, switches from a non-idle state to an idle state, and sends connection releasing completion to the NAS service module;
module M1.3: the NAS business module starts to initiate an emergency business process, the AS business module establishes connection and is converted into a non-idle state;
module M1.4: the NAS business module confirms the initiation of the emergency registration, and then the emergency business is successfully initiated;
the step of confirming the initiation of the emergency registration comprises the step of interacting air interface information of a terminal and a network, and when the current interaction process is finished, confirming the initiation of the emergency registration;
the module M2 comprises:
module M2.1: after the emergency service processing is finished, the NAS service module initiates a de-registration process, the AS service module releases the connection and switches from a non-idle state to an idle state;
module M2.2: the NAS business module recovers the non-emergency business flow terminated before and requests the AS business module to reestablish connection;
module M2.3: and the AS service module is connected and established, the connection is switched into a non-idle state, a connection establishment confirmation is replied to the NAS service module, and the non-emergency service flow is recovered.
3. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the steps of the method as claimed in claim 1.
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