CN113316098B - Method for establishing service channel and public network talkback equipment - Google Patents
Method for establishing service channel and public network talkback equipment Download PDFInfo
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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
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
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- H—ELECTRICITY
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- H—ELECTRICITY
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- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/15—Setup of multiple wireless link connections
Abstract
The present specification provides a method for establishing a service channel, a method for public network talkback and a public network talkback device, wherein the method for establishing the service channel comprises the following steps: receiving a service request initiated by user equipment, and sending a first request message to the 5G core network control plane equipment according to the service request, where the first request message includes identification information of the user equipment, a QoS requirement, and a data flow filter, so that the 5G core network control plane equipment establishes a service channel among the UPF, a target tenant, and a base station according to the first request message. By the method, a service channel can be established in the park area to transmit the talkback data without crossing a mobile return network and the Internet, so that the data stream transmission time delay of the public network talkback service is reduced.
Description
Technical Field
The present disclosure relates to the field of communications technologies, and in particular, to a method for establishing a service channel and a public network intercom device.
Background
Public network talkback (PoC) is a technology for realizing talkback based on a public mobile network by adopting a VoIP mode, and a public network interphone realizes voice call by using mobile network traffic, which can be analogized to calling by using a wechat. The public network talkback service has been developed for many years, and from the beginning of the trunking voice call, the public network talkback service has been developed into a command and dispatch system supporting the trunking voice call, the audio and video conference, the real-time video transmission and distribution, the picture and video shooting transmission, the location service, the mobile video monitoring and other multimedia forms.
Compared with a wired network, a mobile network transmits data by using radio, and because wireless bandwidth resources are limited, and interference and fading of wireless signals also exist, the mobile network has the characteristics of limited bandwidth, high packet loss (/ packet error) rate and large delay jitter. In reality, different services have different QoS requirements, for example, if a WWW service is accessed, packet loss cannot be caused but a certain delay can be tolerated when a webpage is opened, a voice call needs to ensure real-time performance but can accept a certain packet loss, and a real-time video needs to have higher bandwidth and real-time performance. Therefore, the QoS guarantee of the service is very critical by using the wireless network to carry the service. Based on the defects of the mobile network in the aspects of bandwidth, packet loss rate, delay variation and the like and the different QoS requirements of different services, the mobile network defines a set of complex control protocol and forwarding mechanism to ensure the QoS of the services.
The following QoS features are defined in a 5G network: the method comprises the steps of resource type, priority, packet forwarding delay and packet error rate, wherein the resource type defines a guaranteed rate and a non-guaranteed rate, the guaranteed rate is the transmission rate which is required by a mobile network to be guaranteed preferentially as the name implies, the non-guaranteed rate does not define the best effort transmission of a rate information network, the priority defines the resource allocation priority (the priority of wireless resource scheduling) of a specific service in a 5G base station, and the packet forwarding delay and the packet error rate define the minimum threshold requirement required by the service experience guarantee. The QoS characteristics are associated by the 5G QoS identification, the 5G core network control plane equipment transmits the 5G QoS identification and the rate information to the 5G base station, and the 5G base station can control the scheduling of the wireless resources by using the QoS characteristics associated with the 5G QoS identification, so that the QoS requirement of the service on a wireless layer is guaranteed.
Disclosure of Invention
The utility model provides a method for establishing service channel and public network talkback and a public network talkback device, through the method, the service channel among UPF, target tenant and base station can be established in the garden area.
The embodiment of the present disclosure provides a method for establishing a service channel, where the method is applied to a target tenant, the target tenant is deployed in a campus area, the campus area is also deployed with a 5G core network user plane function device UPF, and the UPF is connected to a 5G core network control plane device, and the method includes:
receiving a service request initiated by user equipment;
and sending a first request message to the 5G core network control plane device according to the service request, wherein the first request message comprises identification information of the user equipment, qoS (quality of service) requirements and a data flow filter, so that the 5G core network control plane device establishes a service channel among the UPF, the target tenant and the base station according to the first request message.
It can be seen from the above embodiments that the present disclosure provides a method for establishing a service channel by using devices in a campus area.
Optionally, before sending the first request packet to the 5G core network control plane device according to the service request, the method further includes:
sending a subscription authentication application to the 5G core network control plane equipment;
and after receiving a notification that the subscription authentication fed back by the 5G core network control plane device passes, sending a first request message to the 5G core network control plane device.
Optionally, the causing the 5G core network control plane device to establish the service channel between the UPF, the target tenant, and the base station according to the first request packet specifically includes:
and the 5G core network control plane equipment establishes a service channel among the UPF, the target tenant and the base station to which the user equipment belongs according to the first request message.
Optionally, the data stream filter includes: quintuple information of the service data.
The embodiment of the disclosure also provides a public network talkback method, which is applied to a PTT server, wherein the PTT server is connected with a 5G core network control surface device in a 5G core network, and the PTT server is connected with a 5G core network user surface function device UPF in the area of the park;
the PTT server acquires first user routing information for sending public network talkback data and second user routing information for receiving the public network talkback data;
transmitting the public network talkback data through the PTT server, a service channel between the 5G core network user plane function device UPF and the base station, and the first user routing information and the second user routing information;
and the service channel is established among the UPF, the PTT server and the base station after the subscription authentication of the PTT server is passed by the 5G core network control plane equipment.
Optionally, the method for the PTT server to obtain the first user routing information for sending the public network talkback data and obtain the second user routing information for receiving the public network talkback data includes:
the PTT server receives a service request sent by a first user, the PTT server distributes PTT server address information and PTT server port information aiming at the service request, and acquires the first user routing information according to the service request, wherein the first user routing information comprises: the first user identification, the first user address information and the first user port information;
the PTT server sends a notice to other users except the first user, the notice carries the address information of the PTT server and the port information of the PTT server which are distributed by the PTT server aiming at the service request, and receives the response information of the second user;
the PTT server acquires the routing information of the second user according to the response information, wherein the second routing information comprises: the second user identification, the second user address information and the second user port information.
The embodiment of the present disclosure further provides a public network intercom device, where the public network intercom device is connected to a 5G core network control plane device in a 5G core network, and the public network intercom device includes:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring first user routing information for sending public network talkback data and acquiring second user routing information for receiving the public network talkback data;
the processing module is used for transmitting the public network talkback data through the PTT server, a service channel between the 5G core network user plane function equipment UPF and the base station, and the first user routing information and the second user routing information;
and the service channel is established among the UPF, the PTT server and the base station after the subscription authentication of the PTT server is passed by the 5G core network control plane equipment.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present specification and together with the description, serve to explain the principles of the specification.
Fig. 1 is a schematic flowchart of a method for establishing a service channel according to an embodiment of the present disclosure.
Fig. 2 is a schematic flow chart of a method for public network intercom provided in the embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the specification, as detailed in the appended claims.
The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the description. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It should be understood that although the terms first, second, third, etc. may be used herein to describe various information, these information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, the first information may also be referred to as second information, and similarly, the second information may also be referred to as first information, without departing from the scope of the present specification. The word "if," as used herein, may be interpreted as "at … …" or "at … …" or "in response to a determination," depending on the context.
At present, there is no control interface between a trunking voice call (PTT) and a 5G core network, which results in that services in a public network intercom system can only be carried on a QoS stream (default QoS stream for short) corresponding to a default service established when a public network intercom is accessed as a mobile phone, as shown in table 1, table 1 provides characteristics of a 5G network voice call, a real-time video and a default service QoS.
As shown in table 1, comparing the QoS flow with the 5G QoS flag of 6, 8, or 9 with the QoS characteristic with the 5G QoS flag of 1, it can be known that when a trunking voice call service is established, the default QoS flow cannot well meet the QoS requirement of the voice call, and the voice call experience is difficult to guarantee, which is mainly expressed as that when mobile network resources are in short supply (for example, when a network has a large number of download services and occupies a large amount of wireless bandwidth resources), the voice call delay is large, the voice packet loss rate is high, and the user experience of the real-time video service with higher transmission bandwidth requirement will be worse (the transmission rate cannot be guaranteed) when the mobile network resources are in short supply.
Meanwhile, the 5G core network is usually deployed in a regional data center (provincial level) of a telecom operator, public network talkback services, such as trunking voice communication, need to be exchanged through a PTT server, even if talkback public network interphones are in the same park, geographic positions are nearby, voice data streams still need to be exchanged through a mobile return network and the Internet and then to the PTT server, and the quality of voice communication (such as time delay, jitter and packet loss) cannot be guaranteed due to the transmission quality of an intermediate network (especially when the intermediate network passes through the Internet and is not deployed with a dedicated line).
In order to solve the foregoing technical problem, an embodiment of the present disclosure provides a method for establishing a service channel, which can establish a service channel in a campus area, so that data transceiving is implemented between a tenant device and a UPF and a base station through the service channel. The tenant device may be a PTT (Push-to-Talk) device, a management device, or a terminal device; the user device may be a user interphone.
As shown in fig. 1, a method for establishing a service channel is applied to a target tenant, where the target tenant is deployed in a campus area, the campus area is further deployed with a 5G core network user plane function device UPF, and the UPF is connected to a 5G core network control plane device, where the method includes:
s101, receiving a service request initiated by user equipment;
s102, sending a first request message to the 5G core network control plane device according to the service request, wherein the first request message comprises identification information of user equipment, qoS (quality of service) requirements and a data flow filter, so that the 5G core network control plane device establishes a service channel among the UPF, a target tenant and a base station according to the first request message;
in this embodiment, a target tenant needs to be connected to a Network capability Exposure Function (NEF) in the 5G Network, and in this embodiment, a campus area deploys a UPF, that is, the UPF sinks to the campus.
In step S101, the target tenant may be a PTT server.
In this embodiment, the administrator may configure the subscription information in the 5G core network control plane device, so as to perform subscription authentication on the target tenant first using the subscription information.
For example, the target tenant sends a subscription authentication application to the 5G core network control plane device, where the subscription authentication application carries static attribute information of the target tenant (e.g., address information, key information, and the like of the target tenant), and after the 5G core network control plane device passes the subscription authentication of the target tenant, the target tenant then executes step S102.
In this embodiment, a user equipment initiates a service request (the user equipment initiating the service request includes equipment sending the service request and receiving the service request), and a target tenant acquires the service request, and acquires, according to the service request, identification information, qoS requirements, and a data flow filter of the user equipment sending the service request (responding to receive the service request). The QoS requirement may be a bandwidth requirement, a delay requirement, and the like, and the data stream filter may include quintuple information.
In this embodiment, after the 5G core network control plane device receives the first request message, the 5G core network control plane device may screen information in the first request message, and determine whether to establish the service channel according to a screening result, specifically, a target screening list is set in the 5G core network control plane device, where the screening list includes: one or more combinations of target identification information, target QoS requirements, target data stream filters. And the 5G core network control plane equipment matches the information carried in the first request message with the information in the screening list, and if a matching item exists, the service channel is established. If no matching item exists, the subsequent flow is terminated.
In this embodiment, after the target tenant sends the first request message to the 5G core network control plane device, the 5G core network control plane device may determine, according to the user identifier in the first request message, a base station to which the user device belongs, so as to control a service channel between the UPF, the target tenant, and the base station to which the user device belongs.
By the embodiment, the service channel can be established for the base station, the tenant and the UPF in the park for the public network talkback service transmission, so that the public network talkback is realized locally, and the purpose that the public network talkback data flow does not go out of the park is achieved.
An embodiment of the present specification further provides a method for public network intercom, and as shown in fig. 2, the method is applied to a PTT server, where the PTT server is connected to a control plane device of a 5G core network in a 5G core network, and the PTT server is connected to a user plane function device UPF of the 5G core network in the campus area;
s201, the PTT server acquires first user routing information for sending public network talkback data and acquires second user routing information for receiving the public network talkback data;
s202, the public network talkback data is transmitted through the PTT server, a service channel between the 5G core network user plane function device UPF and the base station, and the first user routing information and the second user routing information.
And the service channel is established among the UPF, the PTT server and the base station after the subscription authentication of the PTT server is passed by the 5G core network control plane equipment.
In step S201, a PTT server receives a service request sent by a first user, the PTT server allocates PTT server address information and PTT server port information to the service request, and acquires routing information of the first user according to the service request, where the routing information of the first user includes: the first user identification, the first user address information and the first user port information;
the PTT server sends a notice to other users except the first user, the notice carries PTT server address information and PTT server port information which are distributed by the PTT server aiming at the service request, and receives response information of a second user;
the PTT server acquires the routing information of the second user according to the response information, wherein the second routing information comprises: the second user identification, the second user address information and the second user port information.
To explain the present solution in detail, an embodiment of the present disclosure further provides an example, including:
users access the network through the interphone 1, initiate a group voice call in the group (the interphone 1 is used as a calling party), send a first SIP INVITE message to the PTT server, meanwhile, the first SIP INVITE message carries the address information, the port number and the media information (such as voice coding and decoding type and speed) of the interphone 1, and the PTT server distributes the address information and the port information of the PTT server for the talkback session
The PTT server sends a second SIP INVITE message for the other walkie-talkies online in the group (i.e., other walkie-talkies except walkie-talkie 1), and at the same time, the second SIP INVITE message carries the PTT server address information, PTT server port information, and media information (e.g., voice codec type, rate) assigned by the PTT for the present talk session.
The PTT server receives the response information sent by the other intercom (here, intercom 2), which carries the address information, port number and negotiated media information (e.g., voice codec type, rate) of intercom 2.
The PTT server sends a data flow grooming creation request to a 5G core network control plane device (e.g., network capability openness device NEF), where the creation request includes one or more combinations of identification information of the intercom 1, qoS requirements, and a data flow filter. The 5G core network control plane equipment receives the creation request and performs subscription authentication, and after the authentication is passed, the NEF requests PCF (equipment in the 5G core network control plane equipment) to trigger the establishment of the special QoS flow and activate the UL CL function in the UPF.
The PCF makes QoS policy decisions according to subscription information, matches with part or all of the information in the application identifier or data flow filter to obtain service QoS and routing information, then requests the SMF to send an IP quintuple as a data flow filter to the edge UPF and the interphone 1, informs the UPF, the 5G base station and the interphone to establish a dedicated QoS flow according to the matched service QoS, and activates the UL CL function for the data flow filter at the edge UPF, i.e., binds the routing information with the data flow filter, and subsequently forwards the data traffic meeting the requirement of the data flow filter according to the routing information, which is the local network address where the PTT server is located in this example. After PCF completes the activation of UL CL function in special QoS flow and UPF, it replies response message to NEF, which replies PTT server data flow sparse creating response.
The above process of establishing the service channel for the intercom 1 and the process of establishing the service pass for the intercom 2 are the same as those of the intercom 1, and therefore are not described in detail.
By the embodiment, the service channel established among the PTT server, the UPF and the base station in the park can enable the public network talkback data to be forwarded in the park without spanning a mobile return network and the Internet, and the data stream transmission delay of the public network talkback service is reduced.
Based on the same concept as the above method, an embodiment of the present disclosure further provides a public network intercom device, where the device is connected to a 5G core network control plane device in a 5G core network, and the device includes:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring first user routing information for sending public network talkback data and acquiring second user routing information for receiving the public network talkback data;
the processing module is used for transmitting the public network talkback data through a service channel between the PTT server, the user plane function equipment UPF and the base station, and the first user routing information and the second user routing information;
the service channel is a service channel among a UPF (unified power Filter), a PTT (push-to-talk) server and a base station, which is established after the PTT server is signed and authenticated by the 5G core network control plane equipment.
The foregoing description has been directed to specific embodiments of this disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims can be performed in a different order than in the embodiments and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing may also be possible or may be advantageous.
Other embodiments of the present description will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This specification is intended to cover any variations, uses, or adaptations of the specification following, in general, the principles of the specification and including such departures from the present disclosure as come within known or customary practice within the art to which the specification pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the specification being indicated by the following claims.
It will be understood that the present description is not limited to the precise arrangements described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present description is limited only by the appended claims.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (8)
1. A method for establishing a service channel is characterized in that the method is applied to a target tenant, the target tenant is deployed in a campus area, a 5G core network user plane function device UPF is also deployed in the campus area, and the UPF is connected with a 5G core network control plane device, and the method comprises the following steps:
receiving a service request initiated by user equipment;
sending a first request message to the 5G core network control plane device according to the service request, wherein the first request message comprises identification information of user equipment, qoS (quality of service) requirements and a data flow filter, so that the 5G core network control plane device establishes a service channel among the UPF, a target tenant and a base station according to the first request message;
the target tenant comprises a PTT server.
2. The method according to claim 1, wherein before the sending the first request packet to the 5G core network control plane device according to the service request, the method further comprises:
sending a subscription authentication application to the 5G core network control plane equipment;
and after receiving a notification that the subscription authentication fed back by the 5G core network control plane device passes, sending a first request message to the 5G core network control plane device.
3. The method according to claim 1, wherein the causing the 5G core network control plane device to establish the service channel between the UPF, the target tenant, and the base station according to the first request packet includes:
so that the 5G core network control plane device invokes a target screening list, where the target screening list includes: one or more combinations of target identification information, target QoS requirements, target data stream filters;
and matching the service request by the 5G core network control plane equipment according to the target screening list, and if the service request passes the matching, establishing the service channel.
4. The method according to claim 1, wherein the causing the 5G core network control plane device to establish the service channel between the UPF, the target tenant, and the base station according to the first request packet specifically includes:
and the 5G core network control plane equipment establishes a service channel among the UPF, the target tenant and the base station to which the user equipment belongs according to the first request message.
5. The method of claim 1, wherein the data stream filter comprises: quintuple information of the service data.
6. A public network talkback method is characterized in that the method is applied to a PTT server, the PTT server is connected with a 5G core network control surface device in a 5G core network, and the PTT server is connected with a 5G core network user surface function device UPF in a region of a park;
the PTT server acquires first user routing information for sending public network talkback data and acquires second user routing information for receiving the public network talkback data;
transmitting the public network talkback data through the PTT server, a service channel between the 5G core network user plane function device UPF and the base station, and the first user routing information and the second user routing information;
the service channel is established among a UPF (unified power Filter), a PTT (push to talk) server and a base station after the PTT server is signed and authenticated by 5G core network control plane equipment;
wherein the PTT server is deployed in a campus area.
7. The method of claim 6, wherein the method for the PTT server to obtain the first user routing information for sending the public network talk-back data and obtain the second user routing information for receiving the public network talk-back data comprises:
the PTT server receives a service request sent by a first user, the PTT server distributes PTT server address information and PTT server port information aiming at the service request, and acquires the first user routing information according to the service request, wherein the first user routing information comprises: the first user identification, the first user address information and the first user port information;
the PTT server sends a notice to other users except the first user, the notice carries the address information of the PTT server and the port information of the PTT server which are distributed by the PTT server aiming at the service request, and receives the response information of the second user;
the PTT server acquires the routing information of the second user according to the response information, wherein the routing information of the second user comprises: the second user identification, the second user address information and the second user port information.
8. The public network intercom device is characterized in that the public network intercom device is connected with a 5G core network control plane device in a 5G core network, and the public network intercom device comprises:
the system comprises an acquisition module, a processing module and a processing module, wherein the acquisition module is used for acquiring first user routing information for sending public network talkback data and acquiring second user routing information for receiving the public network talkback data;
the processing module is used for transmitting the public network talkback data through a PTT server, a service channel between a 5G core network user plane function device UPF and a base station, and first user routing information and second user routing information;
the service channel is a service channel among a UPF (unified power Filter), a PTT (push-to-talk) server and a base station, which is established after the PTT server is signed and authenticated by 5G core network control plane equipment;
wherein the PTT server and UPF are deployed in a campus area.
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