CN101815210A - Digital home remote video monitoring system based on next-generation network - Google Patents
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Abstract
The invention discloses a digital home remote video monitoring system based on a next-generation network, which comprises a video capture device, a video data encoding module, a self-adaptive encoding module, a service quality request module, a home gateway and an intelligent home service platform module. The intelligent home service platform module comprises a terminal display module, a monitoring center module and a video data storage device. Based on the next-generation network (NGN), the invention can realize the remote video monitoring with low cost, and promptly reflect the real-time situation of the monitored object. Moreover, the invention has the advantages of good universality, easy transformation of the achievements, no need for additional equipment and simple system requirements, and avoids the coorperation problem.
Description
Technical Field
The invention relates to the technical field of video monitoring, in particular to a digital home remote video monitoring system based on a next generation network.
Background
The current wired or wireless network environment has the following characteristics: channel resources are relatively limited, and effective bandwidth resources are very limited due to the harsh wireless channel environment. The transmission of video signals with large data volumes is thus achieved, and the resources of the channel are particularly strained, especially in the case of mass-oriented visual applications. In addition, the network is a time-varying network, and since channel reservation of channel resources is not established, the network gradually becomes relatively poor as the use of users increases.
Next Generation network (ngn) is a next Generation network based on a current network. It takes soft switch as core, based on SIP protocol, and can provide comprehensive open network architecture based on packet technology including voice, data, video and multimedia services. Characteristics of NGNs include: packet transfer, separation of control functions from bearers, calls/sessions, applications/services, separation of service provisioning from the network, provision of open interfaces, utilization of basic service composition modules, provision of a wide range of services and applications, end-to-end QoS and transparent transport capabilities, interworking with legacy networks through open interface specifications, universal mobility, allowing users to freely access different service providers, support diverse infrastructure, convergence of fixed and mobile services, etc. NGN is the product of the integration of PSTN voice network based on TDM and packet network based on IP/ATM, it makes the comprehensive business of voice, video, data, etc. become possible on the new generation network, can provide the comprehensive, fully open wide-band network platform system of many kinds of business such as voice, data, multimedia, etc. at the same time, can realize the gigabit fiber to the home at least. The NGN can provide various services including voice, data, multimedia and the like on the basis of the current network, and is expected to greatly reduce the cost and price of local call charge.
Remote monitoring systems based on the general current wired or wireless network environment already exist in the prior art, but no specific implementation scheme is available in the next generation network.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a digital home remote video monitoring system based on the next generation network, which can realize remote video monitoring at low cost and reflect the real-time condition of a monitored object in time.
In order to achieve the purpose, the invention adopts the technical scheme that:
the invention provides a digital home remote video monitoring system based on a next generation network, which comprises a video collector, a video data coding module, a self-adaptive coding module, a service quality request module, a home gateway and an intelligent home service platform module, wherein the intelligent home service platform module comprises a terminal display module, a monitoring center module and a video data storage device; wherein,
the video collector is used for collecting video data, is one or more of a camera cloud mirror system or a fisheye camera used for collecting video information and a sound recording system, and obtains a real-time video data source through the equipment;
the video data coding module is used for realizing a video coding layer, is used for coding the video data collected by the video collector according to coding parameters, and comprises a control data module, a video data storage device for storing digital video data, and a video collector which is arranged in a terminal display module and is used for setting the number of video pictures which can be displayed by each display and corresponding to the displayed video pictures;
the self-adaptive coding module is used for setting the rate of sending the video data according to the received network condition information and the resource channel reservation condition information, adjusting the coding parameters of the video data coding module and generating a specific video code stream;
the service quality request module is used for requesting a transmission service of specified service quality to the network based on a resource reservation protocol, establishing a feedback channel between the sending end and the receiving end of the monitoring center, and facilitating the receiving end to feed back the current state of the network and the reservation condition of the resource channel to the self-adaptive coding module;
the home gateway is a network connection center and a control center in a home and is used for connecting and controlling all devices which can be networked in the home, and storing and distributing video data of a home internal network, which is collected by a video collector;
the intelligent home service platform module comprises a terminal display module, a monitoring center module and a video data storage device, and supports various network access modes in the aspect of network access, and provides a standardized interface to enable data transmission to be simple and direct; providing management functions of terminal and application system access, data routing, monitoring, user authentication, charging and the like for a video monitoring system; providing perfect related application service, equipment access and management functions;
and the terminal display module is used for displaying the processed video data.
The digital home remote video monitoring system is realized on an intelligent home service platform module based on a next generation network, a video monitoring session request is established through SIP, and one-to-many video monitoring is established, wherein the SIP is used for establishing different types of conversations between a video collector and a monitoring center module.
The video collector is one or more of a camera cloud mirror system or a fisheye camera used for collecting video information and a sound recording system, a real-time video data source is obtained through the equipment, and video attribute information is determined, wherein the attribute information mainly comprises the current physical position of a terminal display module and video content description information.
The video data is based on the video data transmitted by the next generation network, and can be divided into a video coding layer and a network adaptation layer in syntax.
The video coding layer has the function of completing the high-efficiency compression of video sequences and is the actual data partial content of the video data transmission.
A digital home remote video monitoring system based on next generation network utilizes the application layer control protocol SIP for multimedia communication on the next generation network, adopts the own application layer reliability mechanism to ensure the reliable transmission of messages, and establishes one-to-many asynchronous session for real-time video monitoring.
The video data coding module is used for realizing a video coding layer and comprises a control data module; and the control data module is connected with the video coding layer and the network adaptation layer.
The self-adaptive coding module feeds back the current state of the network and the reservation condition of the resource channel to the self-adaptive coding module through a feedback channel established between the sending end and the receiving end of the monitoring center by the service quality request module, the self-adaptive coding module estimates or automatically sets the proper sending video data rate according to the channel information, and adjusts the coding parameters of the video coder to generate a specific video code stream.
The service quality request module is mainly based on a resource reservation protocol and has the function of requesting a transmission service with specified service quality for a data flow transmitted by a specific video data flow to a network, so that the video monitoring quality meeting the requirements of a specific user is provided.
The home gateway is connected with and controls all devices which can be networked in a home to form a network connection center and a control center in the home; the built-in 2-layer switch function and DHCP function, wherein the user side interface type includes: LAN/POS (common telephone interface)/Wi-Fi (wireless local area network interface)/IrDA (infrared data interface) and the like, so as to realize the storage and distribution of the real-time video data source content collected by the video collector of the home internal network, and become a multimedia center in the home.
The intelligent home service platform module enables a mobile information terminal developed based on the platform to have powerful functions of video telephone, mobile entertainment, fast internet access and the like through technologies such as high-speed communication, mobile video and streaming media transmission and the like among a multi-processor framework and a plurality of processors, has the advantages of perfecting the protocol standard of streaming media transmission of a content providing end and an equipment end, improving the efficiency of streaming media transmission, improving the display effect, solving the transcoding technology of various media formats, realizing a self-adaptive streaming media transmission mechanism such as a transcoder architecture, bit rate self-adaption and motion vector mapping to improve the transcoding speed and the like.
The monitoring center module has the functions that: it specifies the transmission service that monitors the quality of the demand at a certain time. Firstly, sending an IGMP adding message to a routing server connected with the IGMP adding message, and then establishing a passage between the router and a router connected with a service quality request module; then the route server connected with the monitoring center sends a resource reservation message to the service quality request module to indicate the video data service quality which the monitoring center wants to achieve, and the resource reservation message is received by the service quality request module and is processed correspondingly; thus, in each node on the data network transmission path, the required channel quantity resource is reserved for the video data network transmission to be performed; the service quality request module transmits under the network transmission service quality reserved in advance.
The technical scheme can show that the invention has the beneficial effects that:
compared with the prior art, the digital home remote video monitoring system based on the Next Generation Network (NGN) utilizes an application layer control protocol SIP for multimedia communication on the next generation network, adopts a self application layer reliability mechanism to ensure reliable transmission of messages, establishes one-to-many asynchronous sessions to carry out real-time video monitoring, can realize synchronous storage of video data storage equipment in a video collector and an intelligent home service platform module, has extremely little time delay, can ensure that video data is not lost under the condition of good network communication, and can ensure that video data is lost to the minimum under the condition of poor network communication, thereby ensuring that the system has high safety and high reliability no matter used for monitoring and alarming or used for obtaining evidence afterwards. Meanwhile, the system can realize remote video monitoring at low cost, timely reflects the real-time condition of the monitored object, has good universality, easy realization of result conversion, no need of additional equipment and simple system requirement, and can well avoid the matching problem because each module of the system has small coupling and larger cohesion of functional modules.
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The invention will now be described in further detail with reference to the following examples and the accompanying drawings:
FIG. 1 is a block diagram of the structural components of the system of the present invention;
FIG. 2 is a video monitoring topology structure diagram based on the next generation network according to the embodiment of the present invention;
FIG. 3 is a diagram of an implementation process of utilizing a resource reservation protocol in an embodiment of the present invention;
fig. 4 is a functional block diagram of a video coding layer.
Detailed Description
The invention provides a digital home remote video monitoring system based on a next generation network, which can realize remote video monitoring at low cost and reflect the real-time condition of a monitored object in time.
The invention discloses a digital home remote video monitoring system based on a next generation network, which comprises a video collector, a video data coding module, a self-adaptive coding module, a service quality request module, a home gateway and an intelligent home service platform module, wherein the intelligent home service platform module comprises a terminal display module, a monitoring center module and a video data storage device; wherein,
the video collector is used for collecting video data, is one or more of a camera cloud mirror system or a fisheye camera used for collecting video information and a sound recording system, and obtains a real-time video data source through the equipment;
the video data coding module is used for realizing a video coding layer, is used for coding the video data collected by the video collector according to coding parameters, and comprises a control data module, a video data storage device for storing digital video data, and a video collector for setting the number of video pictures which can be displayed by each display in the terminal display module and the video pictures corresponding to the displayed video pictures;
the self-adaptive coding module is used for setting the rate of sending the video data according to the received network condition information and the resource channel reservation condition information, adjusting the coding parameters of the video data coding module and generating a specific video code stream;
the service quality request module is used for requesting a transmission service of specified service quality to the network based on a resource reservation protocol, establishing a feedback channel between the sending end and the receiving end of the monitoring center, and facilitating the receiving end to feed back the current state of the network and the reservation condition of the resource channel to the self-adaptive coding module;
the home gateway is a network connection center and a control center in a home and is used for connecting and controlling all devices which can be networked in the home, and storing and distributing video data of a home internal network, which is collected by a video collector;
the intelligent home service platform module comprises a terminal display module, a monitoring center module and video data storage equipment. The intelligent home service platform module supports various network access modes in the aspect of network access, and provides a standardized interface to enable data transmission to be simple and direct; providing management functions of terminal and application system access, data routing, monitoring, user authentication, charging and the like for a video monitoring system; providing perfect related application service, equipment access and management functions;
and the terminal display module is used for displaying the processed video data.
The digital home remote video monitoring system is realized on an intelligent home service platform module based on a next generation network, a video monitoring session request is established through SIP, and one-to-many video monitoring is established, wherein the SIP is used for establishing different types of conversations between a video collector and a monitoring center module.
The video collector is one or more of a camera cloud mirror system or a fisheye camera used for collecting video information and a sound recording system, a real-time video data source is obtained through the equipment, and video attribute information is determined, wherein the attribute information mainly comprises the current physical position of a terminal display module and video content description information;
the video data is based on the video data transmitted by the next generation network, and can be divided into a video coding layer and a network adaptation layer in syntax.
The video coding layer has the function of completing the high-efficiency compression of video sequences and is the actual data partial content of the video data transmission.
The invention relates to a digital home remote video monitoring system based on a next generation network, which utilizes an application layer control protocol SIP for carrying out multimedia communication on the next generation network, adopts a self application layer reliability mechanism to ensure the reliable transmission of messages, and establishes a one-to-many asynchronous session to carry out real-time video monitoring.
The video data coding module is used for realizing a video coding layer and comprises a control data module; and the control data module is connected with the video coding layer and the network adaptation layer.
The self-adaptive coding module feeds back the current state of the network and the reservation condition of the resource channel to the self-adaptive coding module through a feedback channel established between the sending end and the receiving end of the monitoring center by the service quality request module, the self-adaptive coding module estimates or automatically sets the proper sending video data rate according to the channel information, and adjusts the coding parameters of the video coder to generate a specific video code stream.
The service quality request module is mainly based on a resource reservation protocol and has the function of requesting a transmission service with specified service quality for a data flow transmitted by a specific video data flow to a network, so that the video monitoring quality meeting the requirements of a specific user is provided.
The home gateway is connected with and controls all devices which can be networked in a home to form a network connection center and a control center in the home; the built-in 2-layer switch function and DHCP function, wherein the user side interface type includes: LAN/POS (common telephone interface)/Wi-Fi (wireless local area network interface)/IrDA (infrared data interface) and the like, so as to realize the storage and distribution of the real-time video data source content collected by the video collector of the home internal network, and become a multimedia center in the home.
The intelligent home service platform module enables a mobile information terminal developed based on the platform to have powerful functions of video telephone, mobile entertainment, fast internet access and the like through technologies such as high-speed communication, mobile video and streaming media transmission and the like among a multi-processor framework and a plurality of processors, has the advantages of perfecting the protocol standard of streaming media transmission of a content providing end and an equipment end, improving the efficiency of streaming media transmission, improving the display effect, solving the transcoding technology of various media formats, realizing a self-adaptive streaming media transmission mechanism such as a transcoder architecture, bit rate self-adaption and motion vector mapping to improve the transcoding speed and the like.
The monitoring center module has the functions that: it specifies the transmission service that monitors the quality of the demand at a certain time. Firstly, sending an IGMP adding message to a routing server connected with the IGMP adding message, and then establishing a passage between the router and a router connected with a service quality request module; then the route server connected with the monitoring center sends a resource reservation message to the service quality request module to indicate the video data service quality which the monitoring center wants to achieve, and the resource reservation message is received by the service quality request module and is processed correspondingly; thus, in each node on the data network transmission path, the required channel quantity resource is reserved for the video data network transmission to be performed; the service quality request module transmits under the network transmission service quality reserved in advance.
The treatment process of the technical scheme of the invention is described in more detail below.
The method comprises the following steps:
(1) as shown in fig. 1, fig. 1 is a block diagram of the structure of the system of the present invention, and the system includes a video collector (specifically, a pan-tilt-zoom decoder in the figure), a video data encoding module, an adaptive encoding module, a service quality request module, a home gateway, and an intelligent home service platform module, wherein the intelligent home service platform module includes a terminal display module, a monitoring center module, and a video data storage device,
the video collector is one or more of a camera cloud mirror system or a fisheye camera for collecting video information and a sound recording system, and a real-time video data source is obtained through the equipment.
(2) As shown in fig. 4, fig. 4 is a functional block diagram of a video coding layer, and the video data obtained in (1) is based on video data transmitted by a next-generation network, and can be divided into a video coding layer and a network adaptation layer in syntax.
The video coding layer has the function of completing the high-efficiency compression of a video sequence and is the actual data partial content of video data transmission;
the video network adaptation layer uses the application layer control protocol SIP for multimedia communication on the next generation network, and adopts the own application layer reliability mechanism to ensure the reliable transmission of the message.
(3) As shown in fig. 2, fig. 2 is a video monitoring topology structure diagram based on the next generation network according to the embodiment of the present invention, and the system is that the SIP proxy server establishes a video monitoring session request by using SIP, and one-to-many video monitors which are independent of each other are established through a series of steps specified in the SIP protocol.
(4) As shown in fig. 3, fig. 3 is a diagram of an implementation process of utilizing a resource reservation protocol in an embodiment of the present invention, where a qos request module is mainly based on the resource reservation protocol and functions to request a network for a transmission service with specified qos for transmission of a specific video data stream, so as to provide video monitoring quality meeting requirements of a specific user.
(5) As shown in fig. 1, the monitoring center module first sends an IGMP join packet to the routing server connected to the monitoring center module, and then the router establishes a path with the router connected to the qos request module. And then the routing server connected with the monitoring center module sends a resource reservation message to the service quality request module to indicate the video data service quality which the monitoring center module wants to achieve. The resource reservation message is received by the service quality request module and processed correspondingly. In this way, in each node on the data network transmission path, the required channel amount resources are reserved for the video data network transmission to be performed. The QoS request module can transmit the data under the network transmission QoS reserved in advance.
(6) As shown in fig. 1, the adaptive coding module receives resource channel reservation on a feedback channel established between the sending end and the receiving end of the monitoring center through the service quality request module, the receiving end feeds back the current status of the network and the resource channel reservation to the adaptive coding module, the adaptive coding module estimates or automatically sets a proper sending video data rate according to the channel information, and adjusts the coding parameters of the video data coding module to generate a specific video code stream.
(7) As shown in fig. 1, the smart home service platform module includes a terminal display module, a monitoring center module and a video data storage device, and supports multiple network access modes in terms of network access, and provides a standardized interface to enable data transmission to be simple and direct; providing management functions of terminal and application system access, data routing, monitoring, user authentication, charging and the like for a video monitoring system; providing perfect related application service, equipment access and management functions; therefore, the intelligent home service platform module comprises a home gateway which is connected with and controls all devices which can be networked in a home, realizes the storage and distribution of the real-time video data source content collected by the network video collector in the home, has a protocol standard which perfects the transmission of the streaming media of the content providing end and the device end, transmits the streaming media and completes the format of the transcoded video data so as to be suitable for the terminal display of the monitoring center host.
The technical scheme can show that the invention has the following effects:
compared with the prior art, the digital home remote video monitoring system based on the Next Generation Network (NGN) utilizes an application layer control protocol SIP for multimedia communication on the next generation network, adopts a self application layer reliability mechanism to ensure reliable transmission of messages, establishes one-to-many asynchronous sessions to carry out real-time video monitoring, can realize synchronous storage of video data storage equipment in a video collector and an intelligent home service platform module, has extremely little time delay, can ensure that video data is not lost under the condition of good network communication, and can ensure that video data is lost to the minimum under the condition of poor network communication, thereby ensuring that the system has high safety and high reliability no matter used for monitoring and alarming or used for obtaining evidence afterwards. Meanwhile, the system can realize remote video monitoring at low cost, timely reflects the real-time condition of the monitored object, has good universality, easy realization of result conversion, no need of additional equipment and simple system requirement, and can well avoid the matching problem because each module of the system has small coupling and larger cohesion of functional modules.
Claims (8)
1. A digital home remote video monitoring system based on next generation network is characterized in that:
the system comprises a video collector, a video data coding module, a self-adaptive coding module, a service quality request module, a home gateway and an intelligent home service platform module; wherein,
the video collector is used for collecting video data and obtaining a real-time video data source;
the video data coding module is used for coding the video data collected by the video collector according to the coding parameters;
the self-adaptive coding module is used for setting the rate of sending the video data according to the received network condition information and the resource channel reservation condition information, adjusting the coding parameters of the video data coding module and generating a specific video code stream;
the service quality request module is used for requesting a transmission service of specified service quality to the network based on a resource reservation protocol, establishing a feedback channel between the sending end and the receiving end of the monitoring center, and facilitating the receiving end to feed back the current state of the network and the reservation condition of the resource channel to the self-adaptive coding module;
the home gateway is used for connecting and controlling all devices which can be networked in a home, and storing and distributing video data of a home internal network, which is collected by the video collector;
the intelligent home service platform module is used for supporting various network access modes in the aspect of network access and providing a standardized interface; providing management functions of terminal and application system access, data routing, monitoring, user authentication and charging for a video monitoring system; and displaying the processed video data.
2. The digital home remote video monitoring system based on the next generation network as claimed in claim 1, wherein:
the intelligent home service platform module comprises a terminal display module, a monitoring center module and video data storage equipment;
the digital home remote video monitoring system is realized on an intelligent home service platform module based on a next generation network, a video monitoring session request is established through SIP, and one-to-many video monitoring is established, wherein the SIP is used for establishing different types of conversations between a video collector and a monitoring center module.
3. The digital home remote video monitoring system based on the next generation network according to claim 1 or 2, characterized in that:
the video collector is a camera cloud mirror system or a fisheye camera for collecting video information, a real-time video data source is obtained through the video collector, and video attribute information is determined, wherein the attribute information comprises the current physical position of a terminal display module and video content description information.
4. The digital home remote video monitoring system based on the next generation network according to claim 3, wherein:
the video data is based on the video data transmitted by the next generation network and is divided into a video coding layer and a network adaptation layer in syntax; the function of the video coding layer is to complete the efficient compression of video sequences, and is the actual data partial content of the video data transmission.
5. The digital home remote video monitoring system based on the next generation network according to claim 3, wherein:
the system utilizes an application layer control protocol SIP for multimedia communication on a next generation network, and adopts an application layer reliability mechanism to ensure the reliable transmission of messages, and establishes a one-to-many asynchronous session for real-time video monitoring.
6. The digital home remote video monitoring system based on the next generation network according to claim 1 or 2, characterized in that:
the self-adaptive coding module establishes a feedback channel between a sending end and a monitoring center receiving end through a service quality request module, the receiving end feeds back the current state of a network and the resource channel reservation condition to the self-adaptive coding module, the self-adaptive coding module estimates or automatically sets the sending video data rate according to the channel information, and adjusts the coding parameters of a video coder to generate a specific video code stream.
7. The digital home remote video monitoring system based on the next generation network according to claim 1 or 2, characterized in that: the service quality request module requests a network for a transmission service of a specified service quality for the transmission of a specific video data stream based on a resource reservation protocol.
8. The digital home remote video monitoring system based on the next generation network according to claim 1 or 2, characterized in that:
the home gateway is connected with and controls all devices which can be networked in a home to form a network connection center and a control center in the home; which has built-in layer 2 switch functionality and DHCP functionality.
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| > 20090630 田玲; 李劲; 孙洪; 基于中国电信普及版视频监控系统的智能家庭方案探讨 56-59 , 第6期 * |
| > 20090630 田玲; 李劲; 孙洪; 基于中国电信普及版视频监控系统的智能家庭方案探讨 56-59 , 第6期 2 * |
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| CN103957450B (en) * | 2014-04-14 | 2017-03-15 | 烽火通信科技股份有限公司 | The method and device for being realized with a low cost video record based on home gateway |
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