JP2003309832A - Video conference reservation system, conference reservation server used for the system, and network management server - Google Patents

Video conference reservation system, conference reservation server used for the system, and network management server

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Publication number
JP2003309832A
JP2003309832A JP2002113465A JP2002113465A JP2003309832A JP 2003309832 A JP2003309832 A JP 2003309832A JP 2002113465 A JP2002113465 A JP 2002113465A JP 2002113465 A JP2002113465 A JP 2002113465A JP 2003309832 A JP2003309832 A JP 2003309832A
Authority
JP
Japan
Prior art keywords
reservation
video conference
resource reservation
conference
resource
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
JP2002113465A
Other languages
Japanese (ja)
Inventor
Toshihiro Oshima
利浩 大島
Original Assignee
Mitsubishi Electric Corp
三菱電機株式会社
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
Application filed by Mitsubishi Electric Corp, 三菱電機株式会社 filed Critical Mitsubishi Electric Corp
Priority to JP2002113465A priority Critical patent/JP2003309832A/en
Publication of JP2003309832A publication Critical patent/JP2003309832A/en
Application status is Pending legal-status Critical

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a video conference reservation system wherein user terminals taking part in a video conference held on an IP network can assure the communication quality. <P>SOLUTION: The video conference reservation system wherein a plurality of terminals 1-1 to 1-6 each having a function of transmission/reception of video and voice in real time hold a video conference via an IP network 5, is provided with: a conference reservation server 2 for receiving reservation of the video conference from the terminals 1-1 to 1-6 and generating a network resource reservation request of the video conference to transmit the request to a network management server 3; and the network management server 3 including a resource reservation means for determining a communication path satisfying a network resource reservation request to make a resource reservation for holding the video conference, and a resource reservation execution means for setting a QoS control command on the basis of the resource reservation to communication controllers 4-1 to 4-4 on a communication path to assure the communication quality required for the video conference. <P>COPYRIGHT: (C)2004,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an SOHO (Smal
l Office / Home Office)
Text that is performed over an IP network in a dispersed work environment
In the Levi conference reservation system, the
Communication quality is guaranteed by reserving communication line resources.
Video conference that can provide the user with a video conference
Conference reservation system and its video conference reservation system.
Conference reservation server and network management server
Things. 2. Description of the Related Art Persons who are distantly located from each other can communicate with each other.
As a conventional technology to hold a conference with video and audio using a stage,
There is a video conference system. Of this video conferencing system
FIG. 14 shows a typical configuration example. Video conference system
Is an audio microphone, video camera, speaker and TV
Terminal devices 101-1 to 101-3 having a monitor and the like;
Connected to the terminal devices 101-1 to 101-3,
Multipoint conference control unit that controls communication between terminals
Below, it is called MCU. Multipoint Control Unit) 1
06. Also, the MCU 106 includes a device.
A conference reservation server 102 for making use reservation is connected,
In the conference reservation server 102, the user further reserves the conference.
Reservation registration terminal 107 for making a reservation in server 102
Is connected. With terminal devices 101-1 to 101-3
Communication means 108-1 to 108-3 with MCU 106
Is a high-speed digital line and ISDN (Integrated Service)
s Digital Network), and circuit-switched networks such as the telephone network
is there. Therefore, the television shown in FIG.
In the case of a conference system, assign a communication line for each user
Communication quality is assured. [0003] In addition, such a video conference system has
And cooperates with the schedule adjustment function for video conference reservations.
Of the teleconference device (in this case,
A system for making a reservation is disclosed in Japanese Patent Laid-Open No. 8-255193.
No. pp. 139 to 163. Further, software provided by Microsoft Corporation
Software such as NetMeeting (registered trademark)
Video Conferencing Software on Personal Computer
TV conference using (remote communication tool)
There is also a consultation system. This video conferencing system
A video conference can be held via the Internet.
Such video conferencing software is available in ITU-T (national
Telecommunications Union), quality non-guaranteed
AN (Local Area Network) / WAN (Wide Area Network)
ork) on an IP (Internet Protocol) network.
It is a standard method of multimedia conference system used
H. H.323. [0005] In addition, in a video conference reservation,
Schedule notifications and meetings to support
The automatic call function at the time is described in JP-A-8-2551.
No. 93 and JP-A-2001-298545.
Has already been proposed. [0006] On the other hand, on the IP network,
Reserves resources (bandwidth) up to the destination and requests communication products
Communication control devices such as routers to ensure quality communication
To implement QoS (Quality of Service) control on
The technology of RSVP (Resource reSerVation Proto
col, recommendation by RFC2205). About this RSVP
For example, see B. Braden, L. Zhang, S. Berson, S. Her.
zog, S. Jamin "Resource ReSerVation Protocol (RSV
P) ", IETF RFC2205, September 1997". SUMMARY OF THE INVENTION
ADSL (Asymmetric Digital Subscri)
ber Line) and FTTH (Fiber to the Home)
Propagation of road bands and "NetMeeting (registered trademark)
The spread of software with functions such as
Through the Internet as described above at SOHO
The use of a video conference system has become possible. However, videoconferencing using a circuit switching network
Unlike systems, communication via the Internet
Is a prerequisite for communication quality
Communication quality that guarantees the required bandwidth and delay time
Communication that satisfies is not always possible. That is,
For video conferencing via the Internet, the Qo
RSVP for implementing S control is not supported
No. Therefore, for example, traffic on the Internet
If your network is near capacity, you can send and receive
To guarantee the bandwidth of packets such as audio and video
The problem is that some data will be discarded
There was a title. In addition, audio transmitted and received in video conferences
When transmitting packets such as video, the data
Delay due to differences in the speed of the line through which data passes or the amount of data
Causes audio and video data to be disrupted.
There was also a problem. Therefore, mainly real-time video
IP network whose purpose is to take communication
In videoconferencing systems implemented on networks,
It is necessary to communicate with the communication quality (communication band and delay time)
is there. [0010] The present invention has been made in view of the above,
In conducting a video conference on an IP network,
Ensuring communication quality between user terminals participating in a video conference
Video conference reservation system and video conference
Meeting reservation server and network used for meeting reservation system
The purpose is to obtain a network management server. [0011] To achieve the above object,
Therefore, the video conference reservation system according to the present invention
IP network composed of communication control devices
Function to send and receive video and audio in real time via
Conference reservation in which a plurality of terminals having video conferences
System that accepts video conference reservations from terminals
The start date and time, end date and time of the video conference,
Network resources, including resources and required resources
Meeting for generating a request and sending it to the network management server
A meeting reservation server and the network resource reservation request.
For determining the communication path to be satisfied and performing the video conference
Resource reservation means for performing resource reservation, and the television conference
On the communication path to ensure the communication quality required for
For the communication control device, Q
resource reservation executing means for setting an oS control command;
And a network management server having
To sign. [0012] According to the present invention, a video conference from a terminal is performed.
Accept the reservation, start date and time, end date and time of the video conference,
Network including participating terminal addresses and required resources
Resource reservation request and generate a network management server
A conference reservation server to send to
A teleconference is held by determining a communication route that satisfies the requirements.
Resource reservation means for making resource reservations for
Communication on the communication path to ensure the necessary communication quality
QoS control for the control device based on resource reservation
Resource reservation executing means for setting a command.
An IP network comprising: a network management server;
Communication in a video conference between the terminals via the
Is guaranteed. The conference reservation server according to the next invention is a
Network composed of a number of communication control devices
A machine that sends and receives video and audio in real time via
Video conferencing with multiple terminals with
TV under the resource management of the network management server
A conference reservation server used for a conference reservation system,
Accepts a video conference reservation from the terminal,
Start date and time, end date and time, participant terminal address and required resource
Generate a network resource reservation request including
Sending to a network management server.
You. [0014] According to the present invention, a video conference from a terminal is performed.
Accept the reservation, start date and time, end date and time of the video conference,
Network including participating terminal addresses and required resources
Resource reservation request and generate a network management server
To send to. A network management server according to the next invention
IP is configured by connecting a plurality of communication control devices.
Video conference reserved from the terminal via the network
Start date and time, end date and time, participant terminal address and required resources
Network resource reservation request including source is conference reservation
Generated by the server, real-time transmission and reception of video and audio
Video conferencing with multiple terminals equipped with a function to perform on time
Network used for the video conference reservation system
A network management server, the conference reservation server
Upon receiving the network resource reservation request, the network
To conduct the video conference from the work resource reservation request
Determines the communication path between the participating terminals, and performs communication on the communication path.
The control device has the necessary resources to conduct the video conference.
Verify whether it can be secured, and if it can be secured, reserve resources.
Resource reservation verification means for making
Communication control on the communication path to ensure necessary communication quality
QoS control for the control device based on the resource reservation
Resource reservation executing means for setting a control command.
It is characterized by that. According to the present invention, the conference reservation server sends
When a network resource reservation request is received, the network
To make a video conference from a request
A communication path between the terminals is determined, and a communication control device on the communication path is determined.
The necessary resources to hold a video conference on
Verifies whether or not resources can be reserved
Source reservation verification method and communication quality required for video conference
To secure communication control devices on the communication path to secure
Set QoS control command based on source reservation
And a source reservation executing means. A network management server according to the next invention
In the above invention, the resource reservation verification means
Is transmitted to the communication control device on the communication path by the TV conference.
Verification of whether necessary resources for discussions can be secured
A resource reservation response including the result to the conference reservation server
It further comprises a function of performing According to the present invention, resource reservation verification means
Is used to hold a video conference with the communication control device on the communication path.
Resources including verification results of whether necessary resources can be secured
Source reservation response is sent to the conference reservation server
You. A network management server according to the next invention
In the above invention, the resource reservation verification means
The communication control device on the communication path, the video conference
Resource schedule including start date / time, end date / time, and resource details
About storing schedule information. According to the present invention, resource reservation verification means
Is the communication control device on the communication path, the start date of the video conference
Resource reservation schedule including hour, end date and time, resource details
Joule information is saved. A network management server according to the next invention
In the above invention, the resource reservation executing means
At the end of the video conference,
The QoS control command for the communication control device
Function and the released QoS control command
Function to delete the corresponding resource reservation schedule information
Is further provided. According to the present invention, resource reservation executing means
Means that the communication system on the communication path
A device that releases the setting of the QoS control command for the control device
And the resource corresponding to the released QoS control command.
Function to delete source reservation schedule information.
I can get it. BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Video conference reservation system and video conference according to the invention
Meeting reservation server and network used for reservation system
A preferred embodiment of the management server will be described in detail.
You. FIG. 1 is a video conference reservation according to the present invention.
FIG. 1 is a block diagram illustrating an example of a system configuration. This
The Levi conference reservation system includes terminal devices 1-1 to 1-6,
The conference reservation server 2 and the network management server 3
IP network composed of communication control devices 4-1 to 4-4
5 are interconnected. Here, the terminal device 1
-1 to 1-6 are audio microphones, video cameras, speakers
And a TV monitor, and
Software capable of conducting video conferencing (hereinafter referred to as TV
Conference software). And
In the terminal devices 1-1 to 1-6, software for videoconference is used.
Is executed, and audio is captured from the microphone and video camera.
Video and audio from the IP network 5
Terminal devices 1-1 to 1-6 of other users participating in the conference
Send to The other terminal devices 1-1 to 1-6 transmit
Output audio and video data to speakers and TV monitors
I do. The communication control devices 4-1 to 4-4 have I
Do not perform QoS control on IP flows on the P network 5.
It is a device such as a router that has the role of transferring data. FIG. 2 shows an example of the configuration of the conference reservation server 2.
It is a block diagram shown. The conference reservation server 2 provides the user with
Has the role of receiving video conference reservations by
User registration control unit 21 for receiving information from
User information storage unit 22 in which user information is stored;
Create the information necessary for video conference resource reservation and
Conference reservation control unit 23 for transmitting to the network management server 3
And from the user's terminal device 1-1 to 1-6
A conference reservation schedule that stores the video conference reservation request
A rule information storage unit 24. In addition, use user
Information storage unit 22 and conference reservation schedule information storage unit 24
Are storage devices such as HDDs (Hard Disk Drives).
Configuration. FIG. 3 shows the configuration of the network management server 3.
FIG. 4 is a block diagram showing an example of the above. Network management server
The terminal 3 performs reservation processing and communication control of the video conference.
Receive a reservation request from the conference reservation server 2
Resource reservation receiving unit 31 and the requested video conference
A resource reservation verification unit 32 for performing resource reservation;
The communication control devices 4-1 to 4-4 and the terminal
The network topology information of devices 1-1 to 1-6 is stored.
Network topology information storage unit 33
For performing QoS control on a selected video conference
The reservation execution unit 34 and the
Resource reservation schedule information for storing schedules
Storage unit 35, and a video conference with secured resources
Resources for related communication control devices 4-1 to 4-4
Resource specification information for each communication controller that stores the reservation status
And a storage unit 36. In addition, Network Topolo
Information storage unit 33 and resource reservation schedule information storage
Unit 35 and the communication control device-specific resource specification information storage unit 36
Are both constituted by storage devices such as HDDs. Here, the video conference shown in FIGS.
Reservation processing for video conferences and
The processing at the time of executing the Levi conference will be described. (1) User Registration A user who uses the video conference reservation system firstly
The user is registered in the meeting reservation server 2. User registration is
Using terminal devices 1-1 to 1-6 owned by the user
Connect to the conference reservation server 2 via the P network 5
Done. FIG. 4 shows the information stored in the user information storage unit 22.
FIG. 3 is a diagram showing an example of the configuration of user information to be transmitted. A user
Is the user name 221, the password 222, the user belongs to
Group name 223, e-mail address
224 and the IP address of the terminal device used by the user
Input the user information including the conference reservation server 225
Send to [0030] The conference reservation server 2 receives the user information.
Then, the user registration control unit 21 sends the user information
It is stored in the user information storage unit 22. As described above, the video conference reservation system is used.
User registration of the user to use is completed. (2) Video conference reservation Next, a video conference in this video conference reservation system
Regarding the reservation process of the meeting, refer to the flowchart of FIG.
I will explain it. In the following, the terminal device A1-1 is called
The user A possesses the user possessing the terminal device B1-2.
And a user C having the terminal device C1-3.
The case where a Levi conference is reserved is taken as an example. User A uses terminal device A1-1 to
Before holding a video conference, make a reservation,
To make a conference reservation, a conference reservation is required as shown in FIG.
The necessary items are input to the request 60 (step S1). This association
The meeting reservation request 60 includes a meeting name 61, a participating member 62,
A conference start date and time 63 and a conference end date and time 64 are included.
It should be noted that the participating member 62 has
User name registered in the user information storage unit 22
221 are used. Necessary items for this conference reservation request 60
After the entry of the term is completed, the user A makes the conference reservation request 6
0 to the conference reservation server 2 from the terminal device A1-1.
Notify (step S2). The conference reservation server 2 transmits the conference reservation request 60
Is received, the conference reservation control unit 23 transmits the received
In the subsequent step, the network management service
Resource reservation request to notify server 3
Resource reservation ID 245 assigned to identify
In addition, the conference reservation schedule information as shown in FIG.
Stored in the conference reservation schedule information storage unit 24
(Step S3). FIG. 7 shows a conference reservation schedule.
Meeting reservation schedule information stored in the information storage unit 24
FIG. 3 is a diagram showing an example of the configuration of FIG. Meeting reservation schedule information
In the report, the conference name 241, participating members (user list)
242, start date and time 243, end date and time 244 and resource
Reservation ID 245 is included. In this case, user A
Conference reservation schedule information by the conference reservation control unit
23, "REQ-00" as the resource reservation ID.
000002 ”. The conference reservation control section 23 stores the stored conference schedule.
About the schedule member specified in the participation member 242
Is stored in the user information storage unit 22.
Search from the user information
Extract the IP address 225 of the terminal device owned by the user
Put out. Here, the resource reservation ID “REQ-000
00002 "as an example.
-Three people, User A, User B and User C,
Decided by the participating members 242 of the conference reservation schedule information
Is determined. Then, the conference reservation control unit 23
The IP address of the terminal device A is stored in the user information storage unit 2
Search from 2. That is, from FIG.
As the IP address 225 of the device A, “1.1.1.X
1 "is extracted. Similarly, the conference reservation control unit 23
Therefore, the IP address 225 of the terminal device B of the user B is
Then, “1.1.1.X2” is extracted, and the terminal of the user C is extracted.
As the IP address 225 of the device C, "1.1.1.X
3 "is extracted. The conference reservation control unit 23 sends the
From the bar IP address and conference reservation schedule information
The network resource reservation request 80 shown in FIG.
And notifies the network management server 3 (step
S4). FIG. 8 shows the network resource reservation request 80.
An example of the format is shown. This network resource
The reservation request 80 is the network resource reservation request 8
0 and the resource reservation ID 81 identifying the
IP address of the terminal device of the member participating in the video conference
And the start date and time of the conference
83, the conference end date and time 84, the required bandwidth 85, and
And a request allowable delay time 86. However, this
In the example of FIG. 8, the bandwidth and the delay time are specified as the communication quality.
, But is not limited to these two.
Other parameters specifying communication quality may be used. [0037] The network management server 3
Receiving the resource request 80, the resource
The reservation receiving unit 31 informs the resource reservation verifying unit 32 of this network.
A network resource reservation request 80 is notified. Resource reserve
About the verification unit 32, each terminal device 1 on the IP network 5
-1 to 1-6 and communication control devices 4-1 to 4-2
Network that indicates whether the connection is
Network topology information in which topology information is stored
Accesses the storage unit 33 and allows the user to use the
The route on the IP network 5 between the terminal devices
You. The route determination method is out of the scope of the present invention.
That is, a known technique is used. FIG. 9 shows the resource reservation verification unit 32 in FIG.
It is a figure which shows the path | route determined so that it overlapped. This figure 9
In the example shown in FIG. 1, user A (terminal A) and user B (terminal
A path between the communication control device 4-1 and the communication control device
Route 4-2, which is called a communication route AB
And Similarly, user B (terminal B) and user C (terminal
The path between the communication control device 4-2 and the communication control device 4-2
This is a route that passes through the device 4-3, and is called a communication route BC.
And between user A (terminal A) and user C (terminal C)
The path of the communication control device 4-1 and the communication control device 4-4
This is a route that passes through the communication control device 4-3.
It is assumed that the route is AC. Next, the resource reservation verification unit 32
Via the communication routes AB, BC, and AC determined in
The communication control devices 4-1 to 4-4 are specified. And re
The source reservation verification unit 32 checks the resource reservation schedule information.
Communication between the information storage unit 35 and the network management server 3
Figure that collects and holds information from devices 4-1 to 4-4
The resource specification information for each communication control device as shown in FIG.
Communication control device-specific resource specification information storage unit 36
To determine if the requested resource is reservable.
(Step S5). Here, of the determined communication paths,
Verify whether resource reservation is possible on communication path AB
The case will be described as an example. This verification is done by first communicating
Each of the communication control devices 4-1 and 4-2 constituting the route AB
And verify that the requested resource is reservable.
And then it is already reserved on the communication path AB
Whether the requested resource can be reserved, taking into account the resource
And verify through the communication path AB
Check that the delay time does not exceed the required allowable delay time.
Judge and verify that resources can be reserved
Made by All validation here is cleared
If so, it is determined that resource reservation is possible,
Otherwise, it is determined that resource reservation is not possible. FIG. 10 shows a network management server.
3 is stored in the resource specification information storage unit 36 for each communication control device.
An example of the resource specification information for each communication control device
This resource specification information for each communication control device
Control device name 361, maximum bandwidth 362, and maximum delay
Time 363 is stored. Also, FIG.
Resource reservation schedule information of the network management server 3
Communication on the IP network stored in the storage unit 35
Resource reservation schedule for control devices 4-1 to 4-4
FIG. 9 is a diagram showing an example of resource information.
The schedule information storage unit 35 stores the communication control device name 35
1, start date and time 352, end date and time 353, reservation resource details
Fine (bandwidth) 354 and resource reservation ID 355
Has been delivered. First, each communication system constituting the communication path AB
Requested resources for the control devices 4-1 and 4-2 are reserved.
Verification is possible, but here, the communication control
The case of the device 4-1 will be described as an example. Shown in FIG.
The reservation resource specified in the network resource reservation request 80
The source has a required bandwidth of 2,000 kbps and can accept the request.
The delay time is 150 ms. On the other hand, the communication control device 4-
The resource specification of No. 1 is the resource control by communication control device shown in FIG.
From source specification information, the maximum bandwidth is 10,000 kbps
And the maximum delay time is 50 ms. Therefore,
In the communication control device 4-1, resources can be secured.
I can judge. Similarly, the communication control device 4-2 also
Is determined to be possible. Next, if the communication route is set on the communication path AB,
Resource reservation for existing resource reservations
Verification of whether or not the communication control device
The case of 4-1 will be described as an example. Shown in FIG.
Communication control device for resource reservation schedule information
4-1 contains the same time when the resource is being reserved
5,000 kbps resource is already reserved for the band
You. Here, the maximum bandwidth of the communication control device 4-1 is as shown in FIG.
10,000k from the resource specification information for each communication control device
bps, the remaining available bandwidth is 5,000
kbps. As a result, the newly requested 2,000
0 kbps bandwidth (requires network resource reservation in FIG. 8)
Request bandwidth of request 80) 85
Thus, it can be determined that resource reservation is possible. Therefore,
Communication control unit 4-1 determines that resource reservation is possible
it can. In a similar manner, the communication control device 4-2 also
Verification is performed, and it is determined that resource reservation is possible. Finally, at the time of delay through the communication path AB
The interval between the request allowances of the network resource reservation request shown in FIG.
It is determined whether the delay time 86 has not been exceeded. Where
The delay time through the communication path AB is equal to the delay time on the communication path AB.
In each of the communication control devices 4-1 and 4-2
It is assumed that the value is obtained by adding a delay. Communication control device of FIG.
From the separate resource specification information, the communication control devices 4-1 and 4-2
50 ms (communication control
(Device 4-1) +20 ms (communication control device 4-2) = 70
ms is the delay time of the communication path AB. This is the figure
150 m shown in the required allowable delay time 86 shown in FIG.
It can be seen that s is cleared. In this way,
By the source reservation verification unit 32, the communication path AB
It is determined that resource reservation is possible. As described above, the resource reservation verification unit 32
Judge that resource reservation is possible for communication path AB
(Yes in step S5), the resource reservation schedule
In the rule information storage unit 35, each communication control device 4-1 and 4-2
Register resource reservation schedule information (step
S6). FIG. 12 is a diagram illustrating the communication on the communication path AB shown in FIG.
Of the communication control device 4-1 and the communication control device 4-2
Registered with the additional reservation schedule information added
Is shown. The other communication paths, ie, communication paths BC and A-
For C, the resource reservation is verified in the same manner, and
Resource reservation schedule if source reservation is possible
Is stored in the resource reservation schedule information storage unit 35.
be registered. This completes the network resource reservation request.
The processing for this is completed. Resource reservation of network management server 3
The verification unit 32 provides the resource reservation reception unit 31 with the verification result.
(Resource reservation OK) is notified. And resource reservation
The contract receiving unit 31 verifies the result of the resource reservation verification unit 32.
The network resources are stored in the conference reservation server 2
Notification of reservation response (resource reservation OK) (step S
7). Network resource reservation response (resource
The conference reservation server 2 having received the reservation OK) responds to the conference reservation
(Conference reservation OK) to terminal device A1-1 (step
Step S8), the conference reservation procedure is completed. On the other hand, in step S5, the network
The communication reservation determined by the resource reservation verification unit 32 of the
It is determined that resource reservation on the communication path is not possible
In the case (No in Step S5), the resource reservation
The verification unit 32 provides the resource reservation reception unit 31 with the verification result.
(Resource reservation NG) is notified. And resource reservation
The contract receiving unit 31 verifies the result of the resource reservation verification unit 32.
The network resources are stored in the conference reservation server 2
Notification of reservation response (resource reservation NG) (step S
9). Network resource reservation response (resource
The conference reservation server 2 having received the reservation NG) sets the conference reservation schedule.
The corresponding schedule registered in the joule information storage unit 24
Delete the module (step S10) and respond to the conference reservation
(Conference reservation NG) to the terminal device A1-1 (step
Step S11). Then, the conference reservation procedure ends. Note that resource reservation cannot be made in step S5.
If it is determined that the IP address is
The route is determined again from the network topology information storage unit 33.
Whether the same resource reservation is possible for the other route
It can be set to repeat verification of the presence or absence a predetermined number of times
Noh. In this case, different routes for a predetermined number of times
Resource reservation is not possible
Source reservation is not possible (No in step S5).
In this case, the processing of step S9 and subsequent steps is performed. (3) Execution of Reserved Video Conference Next, reservation is made by this video conference reservation system.
FIG. 13 is a flowchart of the process of executing a
This will be described with reference to a chart. Resource reservation of network management server 3
The execution unit 34 stores the resource reservation schedule information storage unit 3
The resource reservation information stored in FIG. 5 as shown in FIG.
The schedule information is monitored (step S21), and the resource
Immediately before the reservation time (the resources of the communication control devices 4-1 to 4-4 are
Time when the reservation process is completed by the meeting time)
And a resource reservation schedule as shown in FIG.
According to the reservation resource details 354 stored in the information,
Therefore, the corresponding communication control devices 4-1 to 4-4 are provided with the communication quality.
Transmission of QoS control command setting notification to secure
And sends a QoS control command to the communication control devices 4-1 to 4-4.
Is set (step S22). However, the communication control device
How to set QoS control command to notify 4-1 to 4-4
For details on commands and commands, refer to existing
In the present invention, it is assumed that technology is used.
The law is not particularly limited. The user who participates in the video conference
Then, the respective terminal devices 1-1 to 1-6 are interconnected.
Connect to the Internet and watch video meetings such as NetMeeting (registered trademark)
Start the discussion software (step S23), and
A conference is held (step S24). During this time, IP net
Communication between the users participating in the video conference on work 5
Since the communication is executed with the communication quality reserved in advance,
It is possible to hold a video conference in good condition without dropping
It works. At the meeting end time, the user enters a
Network whether or not a Levi conference is ongoing
The resource reservation execution unit 34 of the management server 3
QoS control set in the communication control devices 4-1 to 4-4
A command release notification is transmitted, and the communication control devices 4-1 to 4-4 are transmitted.
-4 cancels the QoS control command (step S2
5). When the release of the QoS control command is completed,
Resource reservation schedule of network management server 3
The corresponding schedule is deleted from the information storage unit 35.
(Step S26). That is, the conference reservation end time
It is possible to continue the video conference itself after it has passed
However, the communication quality in that case is not guaranteed
The communication is best effort. The video conference according to the present invention described above.
According to the reservation system, the IP network is managed and operated.
ISPs (Internet Service Providers)
Videoconferencing reservation system as a value-added service
To collect fees separately from network usage fees.
Becomes possible. Also, by the time the videoconference is held,
Reservations and always reserve resources for video conferencing.
Dedicated line for video conferencing because there is no need to keep it
Communication resources are wasted because there is no need to secure
It has the effect of not doing it. Further, the user of the video conference can maintain the communication quality.
Telecommunications with good video and audio
Bi-conference can be used. Furthermore, we hold meetings
Request a resource reservation to use in a meeting before hosting
It was determined that resource reservation on a certain communication route was not possible
Even if the resource is switched to another communication path
You can make reservations,
It also has the effect of increasing certainty. As described above, according to the present invention,
A conference reservation service that accepts video conference reservations from terminals.
Communication network that satisfies the network resource reservation request
Make a reservation and make a resource reservation for a video conference.
Communication to ensure the communication quality required for videoconferencing.
Based on resource reservation for communication control device on route
Network management server for setting QoS control commands
Is configured to provide
Communication quality of the video conference
It has the effect. According to the next invention, a video conference from the terminal
And the start date and time and end date of the video conference
Time, the network including the participating terminal address and necessary resources
Sends a work resource reservation request to the network management server
Since a conference reservation server having the function of
Reservation of video conference resources via P-network
What can be received from terminal equipment connected to the P network
It becomes possible. According to the next invention, the resource reservation verification
Network management with steps and resource reservation executing means
Now that the server has been configured,
When a resource reservation request is received,
Communication route between participating terminals for
The necessary resources for conducting a video conference are
Verify whether it can be secured, and reserve resources if it can be secured
Communication control on the communication path based on the resource reservation.
QoS control commands can be set for the control device
It works. As a result, telecommunications performed between reserved terminals
The effect that communication quality of the video conference can be secured
Have. According to the next invention, the resource reservation verification
The stage sends a resource reservation response to the conference reservation server
The conference reservation server is configured to have the function.
Resource reservation for video conferences received from users
This has the effect that success or failure can be known. According to the next invention, the resource reservation verification
The resource reservation at the stage is performed by the communication control device on the communication path,
A resource containing the start and end date and time of the
Configured to save source reservation schedule information
Therefore, there are multiple terminal devices connected to the IP network.
Even if many video conferences are reserved.
This has the effect that it can be easily handled. According to the next invention, the resource reservation execution
The column shows the communication control device on the communication path at the end of the video conference.
A function for canceling the setting of the QoS control command for
Resource reservation corresponding to the released QoS control command
About schedule information.
Video conference has been extended due to the user's circumstances.
Even if it is lost, the IP
Bandwidth unreasonable for other users connected to the network
Can be avoided.
It has the effect.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a video conference reservation system according to the present invention. FIG. 2 is a block diagram illustrating a configuration of a conference reservation server. FIG. 3 is a block diagram illustrating a configuration of a network management server. FIG. 4 is a diagram illustrating an example of user information stored in a user information storage unit; FIG. 5 is a flowchart showing a procedure of a conference reservation. FIG. 6 is a diagram illustrating an example of a format of a conference reservation request. FIG. 7 is a diagram showing an example of conference reservation schedule information stored in a conference reservation schedule information storage unit. FIG. 8 is a diagram illustrating an example of a format of a network resource reservation request. FIG. 9 is a diagram showing a video conference reservation system according to the present invention with a communication path superimposed thereon. FIG. 10 is a diagram illustrating an example of communication-control-device-specific resource specification information stored in a communication-control-device-specific resource specification information storage unit; FIG. 11 is a diagram showing an example of resource reservation schedule information stored in a resource reservation schedule information storage unit. FIG. 12 is a diagram illustrating resource reservation schedule information in which resource reservation has been performed for the communication control device. FIG. 13 is a flowchart showing a processing procedure for executing a video conference reserved in the video conference reservation system. FIG. 14 is a diagram showing a conventional example of a video conference system. [Description of Signs] 1-1 to 1-6 Terminal device, 2 Conference reservation server, 3
Network management server, 4-1 to 4-4 communication control device, 5 IP network, 21 user registration control unit,
22 user information storage unit, 23 conference reservation control unit,
24 conference reservation schedule information storage unit, 31 resource reservation reception unit, 32 resource reservation verification unit, 33 network topology information storage unit, 34 resource reservation execution unit, 35 resource reservation schedule information storage unit, 36
Resource specification information storage unit for each communication control device.

Claims (1)

  1. Claims: 1. A video conference reservation system in which a plurality of terminals having a function of transmitting and receiving video and audio in real time via an IP network constituted by a plurality of communication control devices perform a video conference. A conference reservation server that receives a reservation of a video conference from a terminal, generates a network resource reservation request including a start date and time of the video conference, an end date and time, a participating terminal address and a required resource, and transmits the request to a network management server; Resource reservation means for determining a communication path satisfying the network resource reservation request and making a resource reservation for the video conference; and a communication control device on the communication path for securing communication quality required for the video conference For setting a QoS control command based on the resource reservation. Videoconferencing reservation system, characterized by comprising a network management server with the over scan reservation execution means, and the. 2. A video conference by a plurality of terminals having a function of transmitting and receiving video and audio in real time via an IP network constituted by a plurality of communication control devices is performed under resource reservation management of a network management server. A conference reservation server used for a video conference reservation system to be performed, which receives a reservation of a video conference from a terminal, and generates a network resource reservation request including a start date and time, an end date and time of the video conference, a participating terminal address, and necessary resources. A conference reservation server for transmitting the request to the network management server. 3. A network resource reservation request including a start date / time, an end date / time, a participating terminal address and a required resource of a video conference reserved from a terminal via an IP network configured by connecting a plurality of communication control devices. A network management server generated by a conference reservation server and used for a video conference reservation system in which a video conference is performed by a plurality of terminals having a function of transmitting and receiving video and audio in real time. When a reservation request is received, a communication path between participating terminals for performing the video conference is determined from the network resource reservation request, and a communication control device on the communication path can secure necessary resources for performing the video conference. Verify whether or not
    A resource reservation verifying unit for performing resource reservation when it can be secured; and a QoS control command based on the resource reservation for a communication control device on the communication path to secure communication quality required for the video conference. A network management server, comprising: a resource reservation execution unit to be set. 4. The conference reservation server, wherein the resource reservation verification unit transmits a resource reservation response including a verification result as to whether or not a necessary resource for performing the video conference can be secured to the communication control device on the communication path. The network management server according to claim 3, further comprising a function of transmitting to the network management server. 5. The resource reservation verification unit stores resource reservation schedule information including a communication control device on the communication path, a start date and time of the video conference, an end date and time, and details of resources. 5. The network management server according to 3 or 4. 6. A function for canceling the setting of the QoS control command for a communication control device on the communication path when the video conference end date and time is reached, the resource reservation executing means comprising: 6. The network management server according to claim 5, further comprising a function of deleting resource reservation schedule information corresponding to.
JP2002113465A 2002-04-16 2002-04-16 Video conference reservation system, conference reservation server used for the system, and network management server Pending JP2003309832A (en)

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Cited By (10)

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Publication number Priority date Publication date Assignee Title
JP2007534266A (en) * 2004-04-23 2007-11-22 タンドベルク・テレコム・エイ・エス System and method for including participants in a conference call
US7450513B2 (en) 2004-01-30 2008-11-11 Fujitsu Limited Network controlling apparatus and path controlling method therein
KR100879999B1 (en) 2007-11-09 2009-01-22 광주과학기술원 Method for providing multimedia stream using video distribution group, and system for providing multimedia stream using the said method, and method thereof
JP2009217706A (en) * 2008-03-12 2009-09-24 Ricoh Co Ltd Resource reservation management system, resource reservation management method and resource reservation management program
JP2009232177A (en) * 2008-03-24 2009-10-08 Kddi Corp User management system and method for reserving network path
JP2010118715A (en) * 2008-11-11 2010-05-27 Hitachi Ltd Conference system and data processing method
WO2010082425A1 (en) * 2009-01-15 2010-07-22 ブラザー工業株式会社 Method of control of communication between conference terminal devices, communication conference system, conference control device, and conference terminal device
US7889647B2 (en) 2004-03-16 2011-02-15 Canon Kabushiki Kaisha Switching apparatus for switching real-time packet in real time and packet switching method
US8001095B2 (en) 2004-02-12 2011-08-16 Pioneer Corporation Method of updating a version of an application program
US9877026B2 (en) 2012-10-17 2018-01-23 Hitachi Maxell, Ltd. Image transmission system

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7450513B2 (en) 2004-01-30 2008-11-11 Fujitsu Limited Network controlling apparatus and path controlling method therein
US8001095B2 (en) 2004-02-12 2011-08-16 Pioneer Corporation Method of updating a version of an application program
US7889647B2 (en) 2004-03-16 2011-02-15 Canon Kabushiki Kaisha Switching apparatus for switching real-time packet in real time and packet switching method
JP2007534266A (en) * 2004-04-23 2007-11-22 タンドベルク・テレコム・エイ・エス System and method for including participants in a conference call
KR100879999B1 (en) 2007-11-09 2009-01-22 광주과학기술원 Method for providing multimedia stream using video distribution group, and system for providing multimedia stream using the said method, and method thereof
JP2009217706A (en) * 2008-03-12 2009-09-24 Ricoh Co Ltd Resource reservation management system, resource reservation management method and resource reservation management program
JP2009232177A (en) * 2008-03-24 2009-10-08 Kddi Corp User management system and method for reserving network path
JP2010118715A (en) * 2008-11-11 2010-05-27 Hitachi Ltd Conference system and data processing method
WO2010082425A1 (en) * 2009-01-15 2010-07-22 ブラザー工業株式会社 Method of control of communication between conference terminal devices, communication conference system, conference control device, and conference terminal device
JP2010166290A (en) * 2009-01-15 2010-07-29 Brother Ind Ltd Method of controlling communication among conference terminal devices, communication conference system, conference control device, conference terminal device
US8553066B2 (en) 2009-01-15 2013-10-08 Brother Kogyo Kabushiki Kaisha Conference control device, conference terminal device, and teleconference system
US9877026B2 (en) 2012-10-17 2018-01-23 Hitachi Maxell, Ltd. Image transmission system

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