EP2412147A1 - System for providing a service, such as a communication service - Google Patents

System for providing a service, such as a communication service

Info

Publication number
EP2412147A1
EP2412147A1 EP20100716572 EP10716572A EP2412147A1 EP 2412147 A1 EP2412147 A1 EP 2412147A1 EP 20100716572 EP20100716572 EP 20100716572 EP 10716572 A EP10716572 A EP 10716572A EP 2412147 A1 EP2412147 A1 EP 2412147A1
Authority
EP
Grant status
Application
Patent type
Prior art keywords
connection
service
terminal device
means
communication network
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20100716572
Other languages
German (de)
French (fr)
Inventor
Paul Renac
Jean-Louis Le Roux
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Orange SA
Original Assignee
Orange SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/02Network-specific arrangements or communication protocols supporting networked applications involving the use of web-based technology, e.g. hyper text transfer protocol [HTTP]
    • H04L67/025Network-specific arrangements or communication protocols supporting networked applications involving the use of web-based technology, e.g. hyper text transfer protocol [HTTP] for remote control or remote monitoring of the application
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/66Arrangements for connecting between networks having differing types of switching systems, e.g. gateways
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/12Network-specific arrangements or communication protocols supporting networked applications adapted for proprietary or special purpose networking environments, e.g. medical networks, sensor networks, networks in a car or remote metering networks
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/14Network-specific arrangements or communication protocols supporting networked applications for session management
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/16Service discovery or service management, e.g. service location protocol [SLP] or Web services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network-specific arrangements or communication protocols supporting networked applications
    • H04L67/42Protocols for client-server architectures
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00Television systems
    • H04N7/18Closed circuit television systems, i.e. systems in which the signal is not broadcast
    • H04N7/181Closed circuit television systems, i.e. systems in which the signal is not broadcast for receiving images from a plurality of remote sources

Abstract

The invention relates to a system for providing a service. In particular, the invention relates to a remote monitoring system, particularly via the Internet. An aim of the invention is to provide a terminal device 1 for a communication network 3, comprising: a means for establishing a connection 11 with a service-providing device 2 via at least said communication network 3; and an application-serving means 12 capable of receiving a request for service req2 from said service-providing device 2 over said connection 31. Thus, the terminal device may become accessible from a service-providing device as soon as it is implemented. Further, the fact that the terminal device is initiated by the connection for said secured service secures the access to the data of the terminal device relating to said service.

Description

Delivery system service such as a communication service

A system of service delivery, such as a communication service. In particular, the invention relates to a remote monitoring system, particularly via the Internet.

Communications networks supporting today more and more services including using the Internet and based in particular on a client-server architecture called.

This client-server architecture refers to a mode of communication between different nodes of a communication network that distinguishes one or more terminal nodes (computers, IP phones, IP cameras, IP sensors, etc.) from one server node (service platform , content server, etc.). This architecture is based on the fact that each leaf node includes means customers to send requests to a server and the server is initially passive listening nodes client terminals. The server is possibly following specialized applications in the application server, files, terminals, electronic mail, video surveillance platform.

In this case, the client sends requests to a server, which can be a web server or http server name of the communication protocol used at the application layer network. The server role is to ensure the processing of the request and return the response to this request. The dialogue between client and server is often carried by a transport network layer, such as the TCP layer of the name of a communication protocol TCP. TCP is a reliable transport protocol according to RFC 793.

Thus, the respective operation modes Client and Server Nodes apply to all transport network and application layers, which correspond, for example, respective protocols TCP and HTTP: the client of a service is the customer After connection, the server of a service is the server in terms of connection (Client transport layers and the server need to be connected to allow the service).

In the case of a TCP connection in a network architecture, the server is in passive opening, that is to say that an access to a TCP connection point is open, ie it is made available to a TPC connection, and the server goes into passive waiting for connection requests. The client, in turn, performs an active aperture i.e. it establishes a connection with the server by sending a connection request to the server with the client initial sequence number, the server replies with an acknowledgment of the request client with the server initial sequence number and the client initial sequence number incremented and the customer acknowledges receipt with numbers incremented sequences server and client incremented again.

More and more terminals are installed in private communications networks for LAN or Local Area Network in English. These private networks are connected to the public communication network that usually belong servers or public network providing the linkage between the LAN and the network environment hosting the servers via access device also called access gateway . The access gateway enables the accessibility of communication terminals private networks of private remote communication through a public communication network such as an open network and / or shared, such as the Internet. For this, the access gateway provides interconnection between the private network hosting these terminals and the public communication network. In particular, the gateway implements network address translation functions and filter functions for incoming communications in the private communication network.

The functions of network address translation (network address translation in English or NAT or NAT / PAT for network address to the port address translation) helped to limit the number of public IP address required to join the unitary different terminals connected to this network by mapping between network addresses and port addresses. Thus, when such address translation functions are implemented, a terminal of a private communication network behind the access gateway is not accessible to the public communication network as the translation functions are not configured in the access gateway for the terminal.

In some services, such as remote monitoring service or video surveillance, it may be useful that the server can order at any time a rise of video streams or the movement of a camera. And if that camera address translation functions are not configured in the access gateway in front of the camera, the remote server can not do anything.

In addition, the filter functions implemented at the gateways to secure the vis-a-vis private network communication of public communication network are also there to restrict incoming external access to the private communications network . So if these filtering functions are not configured, the monitoring server does not have access to the cameras allowing it to operate surveillance.

However, the methods for setting the address translations and filtering functions remain to this day dependent implementations different gateway providers: they are thus PLC or process implemented as a computer program to owner. This results in difficulties or even impossibilities to the service provider server to configure heterogeneous home gateways. The gateway configuration can also be done manually. However the issue of changing the configuration of these gateways is not so far resolved.

Furthermore, connections between network addresses and the addresses ports and filtering are activated only temporarily in most cases, the flow of traffic resetting the temporary activation timer, also called timer. This temporary activation is incompatible with certain services, including monitoring, which require the server to pick several times (any time, at any time, periodically, etc.) elements from terminals located behind such gateways of access after long period of traffic inactivity that generated disabling connections.

Mechanisms such as the heart beat mechanism (or keepalive English) help keep the crossing NAT and therefore the connection between the server and the client. These mechanisms are based on periodic messages exchanged between the server and the client on the initiative of the server when the service requires a persistent connection. These mechanisms pose scale passages problems (or scalabilty English), that is to say, sizing issues when dialogue server for this service with a large number of clients since the server must manage monitoring and maintain as many connections as clients.

The service provider may be legally or contractually prohibit the right to configure the translation and filtering functions of an access gateway, especially when the service provider is not the owner and / or operator of the gateway access. This limits the supply of certain services only to customers of the same ISP.

One of the purposes of the present invention is to overcome the disadvantages of the prior art.

An object of the invention is a terminal device of a communication network comprising: • means for establishing a connection with a service provider device through at least said communication network, and

• application servers means for receiving a service request from said service provider device over said connection. Thus, the terminal device can make accessible a service provider device when it is commissioned. Furthermore, the fact that the terminal device either connecting Initiative for Service secures access to the data of the terminal device for this service.

Advantageously, said communication network is a private communication network comprising an access device allowing means for establishing a connection to establish said connection between said terminal device and said service providing apparatus through private communication networks and public.

Thus, the connection being an outbound connection, it is not filtered by the access device and the terminal device is always accessible by the service provider device in response to a service request. And the access device continues to play its role of securing the private communication network.

In addition, this connection advantageously permits bi-directional traffic between the terminal device and the service provider device.

The invention also relates to a service provider device of a communication network comprising:

• to enable a terminal device connecting means to connect with said service provider device through at least said communication network, and

• means for transmitting a service request over said connection to application servers means of the terminal device.

The invention also relates to an application server means commissioning process of a terminal device of a communication network comprising establishing a connection from said terminal device with said service provider through said network device communication, said connection allowing said service provider device to transmit to said application server means said terminal device a service request. Advantageously, the connection establishment is renewed after each breaking said connection between said terminal device and said service providing apparatus.

Thus, the service provider device can always access the same terminal device after a reset of the terminal device, a power failure ...

Advantageously, said connection is a permanent mode connection.

Thus, if the service requires exchanges interspersed period of significant silently causing a connection failure in the case of standard connection, the terminal device restores less frequently connect to the service provider device.

Advantageously, said connection is an encrypted connection.

Thus, the data exchanged over the connection can only be read from the terminal device and the service provider device.

Another object of the invention is a computer program comprising program code instructions for executing the steps of the application server means commissioning process of a terminal device when said program is executed by a processor.

The invention also relates to a system for providing a service in a communication network comprising at least the terminal device and the service provider device.

The invention also relates to a remote monitoring system comprising at least one video camera having this terminal device and a video service platform having the service provider device. The characteristics and advantages of the invention appear more clearly on reading the description, given by way of example, and from the appended figures, of which: - Figure 1, a block diagram of a terminal device according to the invention,

- Figure 2, a block diagram a service platform according to the invention,

- Figure 3, an architectural diagram of a system for providing service in a public communication network of the invention,

- Figure 4, an architectural diagram of a service providing system with at least one terminal device located behind an access device according to the invention,

- Figure 5 is a diagram of exchanges in particular during the commissioning of the application server means of a terminal device according to the invention.

The invention will be more particularly described in the context of a video surveillance application. In general, it applies in every application area where a terminal operates by exchanging data with a remote device on a service. Other applications such as remote home automation services, security services, etc. can also use the invention.

The invention proposes to provide a new structure of the devices view of client-server architectures in terms of connectivity and application.

Figure 1 shows an example of the terminal device 1, including an IP terminal (Internet Protocol abbreviation in English or protocol

Internet). The terminal device operates in "server mode" at the application level using the application server means 12. Thus, it is possible to send to the terminal device 1, in particular its means application server 12 a request service. Application servers means 12 of the terminal 1, when mated, respond to the service request received. To provide joining these application server means 12 remotely at any time embodying the server role of the application server means 12, the terminal device 1 establishes a connection 31 through the means of "establishing a connection 11 with a device supplier remote Service (not shown in Figure 1).

To establish this connection, the terminal device 1 knows, prior to the establishment of the connection 31, the service providing apparatus 2 with which it wishes to establish this connection, e.g., having previously identified by its address. In the case of a video surveillance application, the terminal device 1 may either receive this identification by manual entry or by direct transmission or via a network when registering to the video service, etc.

The terminal device 1 then mixes the roles of "client" and "server" according to the application level of an application service point of view (at least protocols and services, including http service), the terminal device 1 is "server" mode. It includes application servers means 12 and 17, such that at least one Web server or http 12 and, where appropriate, a stream streaming server 17 or other type of Internet application service such as an FTP server ( not shown).

On the connectivity perspective, including TCP connectivity, the terminal device 1 is positioned "client" mode. For this, the terminal device 1 comprises means for establishing a connection 11 coupled to the input / output means 13. In this case, the means for establishing a connection 11 of the terminal device 1 are in the initiative of the connection terminal 31 of the device 1.

As part of the video surveillance application, the terminal apparatus 1 is a camera having capturing means 16, optionally of the storage means 15 of the captured images and moving means 14. Thus the mean application server 12 may receive requests services such as video stream transmission requests the camera movement commands, in particular for PTZ type cameras, queries of a previously recorded video file - etc.

In the case of a video stream transmission request, the application server means 12 may, in particular, be arrange to transmit themselves the video stream from capture means 16 via the input / output means 13 and the connection 31, or to control streaming server means 17 to perform the transmission of the video stream from the capture means 16 via the input / output means 13 and connection 31.

In the case of a camera movement control, application server means 12 may, in particular, transmitting a command cmd to the moving means 14 to rotate the camera 1 with respect to the object to be filmed. Thus, the camera can continuously be controlled remotely by the invention.

In the case of a request from a video file, the server applicatifs12 means can, in particular, search the database 15 or images into a video file for example corresponding to a time slot or a stored video file to transmit via the connection 31.

Figure 2 illustrates a service providing apparatus 2, constituting for example, the service provider device with which the terminal device of FIG 1 dialogue via a connection 31.

The service providing apparatus 2 comprises connection means 21 connected to the input / output means 23 adapted to receive a connection establishment request and permit the establishment of the connection 31. The service provider device 2 further comprises means for transmitting a service request 22 through the input / output means 23 via a connection 31 to a terminal device.

In the case where the service providing apparatus 2 is a video service, the transmitting means 22 are adapted to transmit service requests such as video stream transmission requests camera movement commands, in particular for cameras PTZ type, queries of a previously recorded video file etc.

Optionally, the motion transmitting means 22 also provides service response receiving means to said service requests.

For example, in the case of a video stream transmission request, the request transmitting means of the service 22 are able to receive the requested video stream issued by the application server means 13 or 17 of the terminal device 1 via the connection 31.

Where appropriate, the service providing apparatus further comprises processing means connected to the motion transmission means 22 serve to receive data to be processed based on the responses to said service requests. The processing means 28 using resources of the cameras and may include image processing means, means for searching in specific data image, archiving resources, etc.

Figure 3 illustrates an architecture of a system for providing service in a public communication network 3.

The service provider architecture comprises: a terminal device 1 consisting of different layers: a physical layer 19- t, a network layer level 2192, a level network layer 3 19 3, a mode connection layer "client" comprising setting means of a connection 11, an application layer in "server" mode with at least one of application servers means 12. in the context of the application of video surveillance, the terminal device 1 comprises sensor means 16.

A service provider device 2 constituted by a public network equipment 3 (or shared network) in the remote network terminal device 1 and constituting a service platform. This service 2 providing apparatus is also constituted by different layers: a physical layer 29i, a level network layer 2292, a level network layer 3 29 3, a "server" mode connection layer having connecting means 21, an application layer in "client" mode with at least one of means for transmitting a service request 22.

The means for establishing a connection 11 of the connection layer, in particular TCP client, the terminal apparatus 1 transmit a connection request REQI to the connection means 21 of the connection layer, in particular TCP server, the service provider device 2 (previously identified). This query REQI initiates the establishment of the connection 31, in particular permanent TCP connection, the terminal apparatus 1 with the service provider device 2 through the network 3.

A permanent TCP implements such a mechanism as the "keepalive" mechanism to allow permanent access from the remote device service provider 2.

The permanence of the connection is initiated application servers means 12 for services that require such a connection. Thus, it is the connection establishment means 11 of the terminal device that implement the mechanisms such as "keepalive" by monitoring the connection and exchanging regularly or periodically messages with the connection means 21 of the feeding device 2. the service mechanism constantly being charged to the terminal device 1, it does not pose a dimensioning problem.

Via the connection 31, the service providing apparatus 2 is then able to contact the terminal device 1 at any time for a service request req 2 emitted by its motion transmitting means 22 to the service application server means 12 of the terminal device. 31 The connection is bidirectional, it allows application servers means 12 to respond to the service request req 2.

4 illustrates an architecture of a service providing system with at least one terminal device located behind an access device.

The service provider architecture has again:

A terminal device 1 consisting of different layers: a physical layer 19i, a network layer level February 19 2, a network layer Level 3 19 3, a "client" mode connection layer comprising means for establishing a connection 11 , an application layer in "server" mode with at least one of application servers means 12. in the context of the application of video surveillance, the terminal device 1 comprises sensor means 16.

A service provider device 2 constituted by a public network equipment 3 (or shared network) in the remote network terminal device 1 and constituting a service platform. This service 2 providing apparatus is also constituted by different layers: a physical layer 29-ι, network layer level 2 29 2, a network layer Level 3 29 3, a mode connection layer "server" comprising means for connection 21, an application layer in "client" mode with at least one of means for transmitting a service request 22.

The means for establishing a connection 11 of the connection layer, in particular TCP client 1 of the terminal apparatus 1 transmit a connection request REQI to the connection means 21 of the connection layer, in particular TCP server, the service provider device 2 (previously identified) via an access device such as a gateway (including ADSL gateway such as a Box) 5 that filters incoming information in the 4 or private LAN or LAN (local access network for English) . This query REQI initiates the establishment of the connection 31, in particular permanent TCP connection, the terminal apparatus 1 with the service provider device 2 through the network 3. The request REQI being an outbound request, it is not filtered by the access device, enabling the systematic establishment of the connection 31, which would not be the case if the connection setup request came from the service provider device 2.

Via the connection 31, the service providing apparatus 2 is then able to contact the terminal device 1 at any time for a service request req 2 emitted by its motion transmitting means 22 to the service application server means 12 of the terminal device. Indeed, the connection 31 with the service provider device 2 is established, the incoming requests from the service providing apparatus 2 via the connection 31 are automatically allowed to enter the LAN 4 by the access device 5.

The use of an access device 5 allows global filtering, NAT, for example, incoming requests in the private communication network 4and limit the risk of intrusion, particularly with a device vendor identification process remote Service 2 (process prior to the establishment of a connection 31 as provided in the literature for crossing NAT when establishing TCP connection).

Establishing the connection 31 at the initiative of the terminal device 1 to configure a lookup table or IP address mapping in accordance with general principles of operation of NAT in the access device 5. This mapping keeps interest to use a single IP address, the public IP address of the access device 5, to reach the terminal. Thus, as part of our application, addressing the camera is conditioned by the use of a single public IP address, namely that of access device 5: the ADSL gateway. The solution is compatible regardless of the access device.

Using a secure connection by 31 encryption, including SSL encrypted TCP connection and associated protocols (TLS, DTLS), strengthens the security of the transmission, in particular to ensure the confidentiality of video, while using the same principle the client server inverting invention between the connecting layer (11 of the side terminal device 21 and the side service provider device) and the application layer (12 of the side terminal device 22 and the side service provider device).

5 illustrates exchanges, in particular during the commissioning of the application servers means 12 of a terminal device 1. At the startup of the application servers means 12 which takes place, for example, during commissioning the terminal device 1, when resetting the terminal device 1, after a power failure, etc., the means for establishing a connection of the terminal device 11 transmits via the access device 5 on the network 3 to a device service provider 2 previously identified a connection establishment request REQI c. The connection means 21 of the service provider device 21 being passive opening O, they are listening to such a request and respond acki s. Following the response acki c of the connection establishment means 11 of the terminal device to the response from the service providing apparatus 2, the connection is shown in the figure by the tunnel between the connection layers 11 of the terminal device 1 and 21 the service providing apparatus 2.

By this connection, the service provider device 2 by its request transmitting means service 22 may transmit to the application servers means 12 of the terminal device 1 of service requests such as camera movement commands constituting the terminal device 1 req 2 cmd (14, R30 °) (here, translation control 14 units and clockwise rotation of 30 °) at which the application server means 12 can, for example, by transmitting the camera flow moved f / cmd; requests of a previously recorded video file fic req 2 (dh) on which the application server means 12 respond by transmitting the requested file fic (d, h); the video stream transmission requests req f 2 at which the application server means 12 respond by transmitting the requested flow f2 (an end of stream request req2 stop f 22 Service request transmitting means to terminate transmission of streams); - etc.

The principle used by the invention to establish the connection by the terminal device and then receiving service requests from a service provider device can be established for this service providing apparatus identified a permanent and secure access to the terminal device via including an open network (internet) or shared. In addition, the proposed solution is independent of gateways and transparent to it and scalable.

In the case of terminal devices belonging to private communications networks and placed behind access devices, the invention provides, in the context of service delivery using such terminals, a universal answer to the problem of crossing NAT.

Claims

1. A terminal device of a communication network comprising:
• means for establishing a connection (11) with a service providing apparatus (2) through at least said communication network (3,4), and
• means application servers (12) capable of receiving a service request (Req 2) of said service providing apparatus (2) over said connection (31).
2. A terminal device according to the preceding claim characterized in that said communication network is a private communication network (4) comprising an access device (5) allowing for the establishment of a connection means (11) to establish said connection (31) between said terminal device (1) and said service providing apparatus (2) through the private communication network (4) and a public communication network (3).
3. Device service provider of a communication network (3) comprising:
• connection means (21) for allowing a terminal device (1) to establish a connection (31) with said service providing apparatus (2) through at least said communication network (3,4), and • means for transmitting a service request (22) over said connection (31) to the application server means (12) of the terminal device (1).
4. A method of application server service means (12) of a terminal device (1) of a communication network (3,4) having the property (REQI, reqic) a connection (31) said terminal device (1) with said service providing apparatus (2) through said communication network (3,4), said connection (31) allowing said service providing apparatus (2) transmitting to said application server means ( 12) of said terminal device (1) a service request (Req 2).
5. A method for commissioning according to the preceding claim, characterized in that the connection establishment is renewed after each breaking said connection (31) between said terminal device (1) and said service providing apparatus (2).
6. A method for commissioning according to any one of claims 4 or 5, characterized in that said connection (31) is a permanent mode connection.
7. A method for commissioning according to any one of claims 4 or 5, characterized in that said connection (31) is an encrypted connection.
8. A computer program comprising program code instructions for executing the steps of the application server means commissioning process of a terminal device according to any one of claims 4 to 7 when said program is executed by a processor 9. a system for providing a service in a communication network comprising at least one terminal device (1) according to claim 1 and a service providing apparatus (2) according to claim 3. 10. a remote monitoring system comprising at least one video camera having catch means (16) and a terminal device (1) according to claim 1 and a video service platform including a service providing apparatus (2) according to claim 3.
EP20100716572 2009-03-23 2010-03-23 System for providing a service, such as a communication service Pending EP2412147A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0951839 2009-03-23
PCT/FR2010/050522 WO2010109128A1 (en) 2009-03-23 2010-03-23 System for providing a service, such as a communication service

Publications (1)

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EP2412147A1 true true EP2412147A1 (en) 2012-02-01

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EP (1) EP2412147A1 (en)
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Publication number Publication date Type
US9900373B2 (en) 2018-02-20 grant
WO2010109128A1 (en) 2010-09-30 application
US20120086805A1 (en) 2012-04-12 application

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