WO2012022252A1

WO2012022252A1 - System and method for video monitoring based on ims

Info

Publication number: WO2012022252A1
Application number: PCT/CN2011/078465
Authority: WO
Inventors: 叶小阳
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-08-20
Filing date: 2011-08-16
Publication date: 2012-02-23
Also published as: CN102377987A; CN102377987B

Abstract

Disclosed is a system for video monitoring based on an IP multimedia subsystem (IMS), which system comprises: a client end subsystem for monitoring, an IMS core control part, an application server subsystem and a front end subsystem for monitoring; wherein during the service logic processing thereof, the IMS core control part is responsible for routing and forwarding of an SIP signalling between the client end subsystem for monitoring, the application server subsystem and the front end subsystem for monitoring, and for establishing/removing a corresponding session. Accordingly, also disclosed is a method for video monitoring based on IMS. The present invention can realize a system and service for video monitoring based on IMS by providing the relationships and interfaces between the architecture, the division of functional entities, the functions of the functional entities and the functional entities in the system for video monitoring based on IMS, so that it is capable of embodying such technical advantages as IMS unified access control, convergence of various multimedia services, reliability in the multimedia service quality, etc.

Description

IMS-based video monitoring system and method

The present invention relates to video surveillance technologies, and in particular, to a video surveillance system and method based on an IP Multimedia Subsystem (IMS). Background technique

In recent years, with the rapid development of computers, networks, and image processing and transmission technologies, video surveillance technology has also made considerable progress. The new generation of video surveillance system enables media transmission through the network for remote video surveillance. No matter where the user is, they can use the client, such as a computer, to log on to the Internet, connect to the network video surveillance system, and acquire images and sounds. Video surveillance is widely used in many places, such as banks, schools, hospitals, small areas, and road traffic, because of its intuitive convenience and rich information.

On the other hand, the current development of all-IP has accelerated the convergence of telecommunications and the Internet, and end-to-end IP is the trend of network development. IMS has the following characteristics:

Independent of access, it is theoretically possible to use the home location service regardless of the device used by the user and where to access the IMS network;

A unified service trigger mechanism, the IMS core control part does not implement specific services, and all services include the traditional 4 supplementary services that are implemented by the service application platform;

A unified routing mechanism, and user-related data information is only stored in the user's home location, and all user-related services must also pass through the user's home location;

The unified user database shields the difference between the fixed and mobile users in the service attributes; fully considers the actual operation requirements of the operators, and has established relevant specifications in terms of network framework, QoS, security, billing, and interworking with other networks.

IMS unified access control, convergence of various multimedia services, and reliable multimedia service quality Technical characteristics and advantages such as sex are being recognized by telecom operators, and telecom operators are stepping up deployment

The IMS core network, and gradually migrated various services to the IMS core network.

IMS is defined by the 3GPP, 3rd Generation Partnership Project (3GPP), and is a general term for the network core layer logical functional entities that control IP multimedia services. The IMS uses the IP packet domain as its control signaling and media transmission bearer channel, and uses the SIP protocol as the call control signaling, which realizes the separation of service management, session control and bearer access, and its advantages in network convergence. More and more attention has been paid. For example, ITU-T, ETSI, etc. also use IMS as their core network for defining next-generation networks.

However, the current video surveillance architecture is not based on IMS design, so the current video surveillance system can not achieve operational and manageable carrier-grade video surveillance. Summary of the invention

In view of the above, the main purpose of the present invention is to provide an IMS-based video surveillance system and method, which can implement IMS unified access control, convergence of various multimedia services, and improve multimedia service quality reliability.

In order to achieve the above object, the technical solution of the present invention is achieved as follows:

A video surveillance system based on an IP multimedia subsystem IMS, comprising: a monitoring client terminal system, an IMS core control part, an application server subsystem, and a monitoring front end subsystem; wherein the monitoring client terminal system is set to generate according to a user operation Corresponding SIP signaling, and sending the SIP signaling to the application server subsystem through the IMS core control part; and displaying corresponding information to the user according to SIP signaling from the IMS core control part;

The application server subsystem is configured to perform corresponding service logic processing according to the SIP signaling from the IMS core control part;

The IMS core control part is configured to perform SIP signaling routing and forwarding between the monitoring client terminal system, the application server subsystem, and the monitoring front-end subsystem, and the establishment/removal of the corresponding session in the business logic processing process; The monitoring front-end subsystem is configured to collect, encode, and transmit monitoring information; and process SIP signaling from the IMS core control portion and reply.

The system also includes a media control and storage subsystem configured to forward, distribute, transcode, store, or unicast the media from the monitoring front end subsystem according to notifications from the application server subsystem; and provide streaming services ; and forward media data from the monitoring client terminal system.

The monitoring client terminal system is further configured to present media from the media control and storage subsystem to the user; and to transmit media to the media control and storage subsystem in accordance with user operations.

The IMS core control part is further configured to perform access authentication on the monitoring client terminal system when the monitoring client terminal system is accessed.

The application server subsystem is further configured to directly configure and manage the monitoring client terminal system and/or the monitoring front end subsystem.

The monitoring front-end subsystem is further configured to directly perform signaling interaction and code stream transmission with the monitoring client terminal system.

An IMS-based video surveillance method, including:

The monitoring client terminal system generates corresponding SIP signaling according to the user operation, and sends the SIP signaling to the application server subsystem through the IMS core control part;

The application server subsystem performs corresponding service logic processing according to the SIP signaling from the IMS core control part. In the service logic processing process, the IMS core control part is responsible for monitoring the client terminal system, the application server subsystem, and monitoring Routing and forwarding of SIP signaling between terminal systems, and establishment/removal of corresponding sessions;

The monitoring client terminal system presents the corresponding information to the user based on SIP signaling from the IMS core control portion.

The application server subsystem performs corresponding service logic processing according to the SIP signaling from the IMS core control part to: the application server subsystem notifies the media control and storage subsystem Forward, distribute, transcode, store, or unicast-to-multicast media from the monitoring front-end subsystem, and provide streaming services.

The method also includes: monitoring the client terminal system to present the media from the media control and storage subsystem to the user.

The method further includes: when monitoring the access of the client terminal system, the IMS core control portion performs access authentication on the monitoring client terminal system.

The method further includes: the application server subsystem directly configuring and managing the monitoring client terminal system and/or the monitoring front end subsystem.

The method further includes: monitoring the front-end subsystem to directly perform signaling interaction and code stream transmission with the monitoring client terminal system.

The IMS-based video monitoring system and method, the video monitoring system comprises: a monitoring client terminal system, an IMS core control part, an application server subsystem, a media control and storage subsystem, and a monitoring front-end subsystem, wherein the IMS core control part is set In the process of business logic processing, SIP signaling routing and forwarding, and establishment/removal of corresponding sessions are performed between the monitoring client terminal system, the application server subsystem, and the monitoring front-end subsystem. The present invention can implement an IMS-based video surveillance system and service by providing an IMS-based video surveillance system architecture, functional entity partitioning, functional entity functions, and functional entity relationships and interfaces, thereby enabling IMS unified access control. , the convergence of various multimedia services and the technical advantages of multimedia service quality and reliability. DRAWINGS

1 is a schematic structural diagram of an IMS-based video surveillance system according to the present invention;

2 is a schematic structural diagram of an application server subsystem according to the present invention;

FIG. 3 is a schematic flowchart of a IMS-based video monitoring method according to the present invention. detailed description

The basic idea of the present invention is: The video monitoring system comprises: a monitoring client terminal system, an IMS core control part, an application server subsystem, a media control and storage subsystem, and a monitoring front end subsystem, the IMS core control part being set to be in the business logic During the processing, SIP signaling routing and forwarding, and establishment/removal of corresponding sessions are performed between the monitoring client terminal system, the application server subsystem, and the monitoring front-end subsystem.

1 is a schematic structural diagram of an IMS-based video surveillance system according to the present invention. As shown in FIG. 1, the system includes: a monitoring client terminal system (CU) 11. an IMS core control part (Core IMS) 12. an application server subsystem (AS) 13. Monitoring front-end subsystem (PU) 14. Media Control and Storage Subsystem (MCSU) 15; wherein

The monitoring client terminal system 11 is configured to generate corresponding SIP signaling according to user operations, and send the SIP signaling to the application server subsystem 13 through the IMS core control portion 12; and according to the SIP message from the IMS core control portion 12 And presenting the corresponding information to the user; and presenting the media from the media control and storage subsystem 15 to the user; and transmitting the media to the media control and storage subsystem in accordance with user operations.

The monitoring client terminal system 11 can be a professional monitoring center, a set top box, a mobile phone, a WEB client, etc., and at least includes a media decoding function, a media playing and display function, a user control interface function, such as a monitoring list view, a real-time video viewing, a video search. And viewing, alarm handling, etc.

The IMS core control section 12 is configured to perform routing and forwarding of SIP signaling between the monitoring client terminal system 11, the application server subsystem 13, and the monitoring front end subsystem 14 during the business logic processing, and the establishment of the corresponding session/ Demolition; and when the monitoring client terminal system 11 is accessed, performing access authentication on the monitoring client terminal system 11;

The application server subsystem 13 is configured to perform corresponding business logic processing according to SIP signaling from the IMS core control portion 12, and implement management functions; and directly configure the monitoring client terminal system 11 and/or the monitoring front end subsystem 14 and management. The application server subsystem 13 can implement various management functions, including user management, device management, device placement, rights management and system management, system operation and maintenance, etc.; application server subsystem for business logic processing involves PU/CU access and control Signaling processing, recording plan delivery, alarm processing, PU status change notification, etc.

2 is a schematic structural diagram of an application server subsystem 13 of the present invention. As shown in FIG. 2, the application server subsystem 13 further includes: a service discovery function entity (SDF) 131, a service selection function entity (SSF) 132, and a service control function entity. (SCF) 133; where

The Service Discovery Function Entity (SDF) 131 is configured to notify the terminals (UEs) that access the Core IMS to discover the network video surveillance service. After the UE successfully registers with the Core IMS, subscribe to the network video surveillance service to the SDF, and the SDF receives the subscription. After the request, the Service Selection Function Entity (SSF) information is returned to the UE through the notification message.

The service selection function entity (SSF) 132 is configured to provide various specific network video monitoring services for the user to select, such as the user viewing and browsing the monitoring point list information, the alarm information, and the query video file.

The Service Control Function Entity (SCF) is set to implement various business logic control functions for network video surveillance. For example, the user's PTZ control request is authenticated and controlled.

The monitoring front end subsystem 14 is configured to collect, encode, and transmit monitoring information (such as audio, video, captured images, or alarm information); and process and respond to SIP signaling from the IMS core control portion; and alarm signal output And direct signaling interaction with the monitoring client terminal system 11 and code stream transfer.

The media control and storage subsystem 15 is configured to perform media forwarding, distribution, transcoding, storage, unicast to multicast, and the like; and provide streaming media services, such as streaming media uploading, downloading, real-time playing, etc.; and providing retrieval; And forwarding media data from the monitoring client terminal system.

The following describes the interface in Figure 1:

A1: The interface between the Core IMS 12 and the monitoring client terminal system 11, for processing registration, Call control, status notification, alarm subscription notification, parameter query and configuration, cloud mirror control, routing of these signaling between Core IMS 12 and CU;

A2: an interface between the Core IMS 12 and the monitoring front end, configured to process the route of the PU-initiated session, and route the signaling sent from the other functional entity to the PU to the PU;

A3: An interface between the Core IMS 12 and the application service subsystem, which is used to process an interactive signaling interface for business logic processing between the two, and the service request is directed to a specific AS through the Core IMS 12 to complete the final processing of the business logic. At the same time, the processing result of the AS on the service is also returned to the requesting end by the Core IMS 12.

A4: an interface between the monitoring front-end subsystem 14 and the monitoring client terminal system 11, for the interface between the direct-connected signaling and the direct-connected code stream between the two;

A5: an interface between the application server subsystem 13 and the monitoring client terminal system 11, an interface for the AS to configure and manage the CU; the CU acquires service related data, an interface for monitoring point list acquisition, and data query;

A6: an interface between the application server subsystem 13 and the monitoring front-end subsystem 14 for an AS-to-PU configuration and management interface;

A7: an interface between the media control and storage subsystem and the monitoring client terminal system 11, for requesting an interface for code stream, code stream delivery, and media playback control;

A8: an interface between the media control and storage subsystem and the monitoring front end subsystem 14, an interface for media stream request, media code stream transmission and control;

A9: an interface between the media control and storage subsystem and the application server subsystem 13, for requesting a media service address, an interface of the application server subsystem 13 for scheduling management of the media distribution portion of the media control and storage subsystem;

In practical applications, an IMS-based video surveillance system can be constructed according to the following principles: Deploying or utilizing an existing IMS network, the Core IMS core network can provide services for network video surveillance services; An application server subsystem for establishing a network video surveillance service includes at least a service discovery function entity (SDF), a service selection function entity (SSF), and a service control function entity (SCF).

The interface between the SDF and the SCF and the Core IMS uses the ISC interface defined by the IMS standard, and the interface protocol includes SIP/SDP;

Establish a media control and storage subsystem for video surveillance, including at least media storage functions, media distribution functions, media management and retrieval functions, and streaming service delivery functions. The aforementioned application server subsystem can schedule the media control and storage subsystem to request and obtain a media service address. The SIP control interface is used between the media control and storage subsystem and the application service subsystem; the video surveillance front-end subsystem is established, and at least includes an audio and video collection function, an audio and video coding function, a media transmission function, an alarm information collection function, and an alarm. Event processing function. The PU subsystem may register with the AS subsystem through the Core IMS and obtain a service from the AS system; the PU subsystem may perform media stream request, play control, and acquisition to the MCSU subsystem. Code stream

A video monitoring client terminal system is established to provide a user interface for the video monitoring service, and the CU subsystem can perform media stream request, playback control, and acquisition of the code stream to the MCSU subsystem. It and the Core IMS follow the Gm interface in IMS, and the interface protocol includes SIP/SDP. The CU subsystem can register with the AS subsystem through the Core IMS and obtain a service from the AS system; after the monitoring client (CU) successfully registers with the Core IMS, subscribe to the video surveillance service to the SDF through the SIP message. The SDF returns specific service selection function entity (SSF) information through the SIP message;

The monitoring client (CU) and the monitoring front end (PU) are both user equipments (UEs) in the Core IMS, and select specific video monitoring services, CUs, PUs, and service selection functional entities through the Service Selection Function Entity (SSF) of the AS. The interface between (SFF) uses the HTTP interface protocol.

The SIP/RTSP/RTP interface protocol is used between the CU and the PU and the Media Control and Storage Subsystem (MCSU). 3 is a schematic flowchart of a IMS-based video monitoring method according to the present invention. As shown in FIG. 3, the method includes:

Step 301: The monitoring client terminal system generates corresponding SIP signaling according to the user operation, and sends the SIP signaling to the application server subsystem through the IMS core control part 12.

Step 302: The application server subsystem performs corresponding service logic processing according to the received SIP signaling. In the process of the service logic, the IMS core control part 12 is responsible for monitoring the client terminal system, the application server subsystem, and monitoring. Routing and forwarding of SIP signaling between the terminal systems, and establishment/removal of corresponding sessions.

The application server subsystem performs corresponding service logic processing according to the SIP signaling from the IMS core control portion 12, which may be: the application server subsystem notifies the media control and storage subsystem to forward, distribute, and Transcoding, storage or unicast to multicast, and providing streaming services, correspondingly, the monitoring client terminal system presents the media from the media control and storage subsystem to the user.

Step 303: The monitoring client terminal system presents the corresponding information to the user according to the SIP signaling from the IMS core control section 12.

Preferably, the method further comprises: when monitoring the access of the client terminal system, the IMS core control part performs access authentication on the monitoring client terminal system.

Preferably, the method further comprises: the application server subsystem directly configuring and managing the monitoring client terminal system and/or the monitoring front end subsystem.

Preferably, the method further comprises: monitoring the front-end subsystem to directly perform signaling interaction and code stream transmission with the monitoring client terminal system.

The above is only the preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

Claims

Claim

A video surveillance system based on an IP multimedia subsystem IMS, wherein the system comprises: a monitoring client terminal system, an IMS core control part, an application server subsystem, and a monitoring front terminal system;

The monitoring client terminal system is configured to generate corresponding SIP signaling according to a user operation, and send the SIP signaling to the application server subsystem through the IMS core control part; and according to SIP signaling from the IMS core control part, Display the corresponding information to the user;

The IMS core control part is configured to perform SIP signaling routing and forwarding between the monitoring client terminal system, the application server subsystem, and the monitoring front-end subsystem, and the establishment/removal of the corresponding session in the business logic processing process;

The monitoring front-end subsystem is configured to collect, encode, and transmit monitoring information; and process and respond to SIP signaling from the IMS core control portion.

2. The system of claim 1, wherein the system further comprises a media control and storage subsystem configured to forward, distribute, transcode, and/or forward media from the monitoring front end subsystem based on notifications from the application server subsystem, Store or unicast to multicast; and provide streaming services; and forward media data from the monitoring client terminal system,

3. The system according to claim 1 or 2, wherein

4. The system according to claim 1 or 2, wherein

The application server subsystem is also configured to directly monitor the client terminal system and/or monitor The front-end subsystem is configured and managed.

5. The system according to claim 1 or 2, wherein

6. An IMS-based video monitoring method, wherein the method comprises:

7. The method according to claim 6, wherein

The application server subsystem performs corresponding service logic processing according to the SIP signaling from the IMS core control part as: the application server subsystem notifies the media control and storage subsystem to forward, distribute, and Transcoding, storage or unicast to multicast, and streaming services,

8. The method according to claim 6 or 7, wherein

9. The method according to claim 6 or 7, wherein

The method also includes: an application server subsystem directly monitoring the client terminal system and/or monitoring The front-end subsystem is configured and managed.

10. The method according to claim 6 or 7, wherein