WO2005069620A1 - A method for adhoc buffer - Google Patents
A method for adhoc buffer Download PDFInfo
- Publication number
- WO2005069620A1 WO2005069620A1 PCT/NO2005/000021 NO2005000021W WO2005069620A1 WO 2005069620 A1 WO2005069620 A1 WO 2005069620A1 NO 2005000021 W NO2005000021 W NO 2005000021W WO 2005069620 A1 WO2005069620 A1 WO 2005069620A1
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- WO
- WIPO (PCT)
- Prior art keywords
- conference
- time
- session
- resources
- end time
- Prior art date
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/14—Systems for two-way working
- H04N7/15—Conference systems
- H04N7/152—Multipoint control units therefor
Definitions
- the present invention relates to managing, scheduling and initiating audio/video conferences, and relates in particu- lar to a flexible method for allocating mixed media conference resources between one or more users.
- Conventional audio/video conferencing systems comprise a number of end-points communicating real-time video, audio and/or data streams over and between various networks such as WAN, LAN and circuit switched networks.
- a number of audio/video conference systems residing at different sites may participate in the same conference, most often through one or more MCU' s (Multipoint Control Unit) performing i.a. switching functions in order to allow the audiovisual terminals to intercommunicate properly.
- MCU' s Multipoint Control Unit
- Audio/video conferencing systems are therefore often ⁇ used in conjunction' ' with a resource scheduler.
- a resource scheduler is a module that is used for scheduling or booking resources at any given point of time. The resource scheduler will allow a user to request resource usage at a given point of time, and either allow or disallow the usage at that time. Resource schedulers are often used for scheduling the use of meeting rooms, network resources, video systems etc. The resource scheduler must be connected to a database containing updated information regarding all ac- cessible resources, like MCU's, gateways, routers, end- points etc.
- a resource scheduler may e.g. provide system and resource overview, allowing the user to create, edit, and delete reservations, reserve resources for dial-in participants and specify bandwidth and network settings .
- the resource scheduler may also support automatic call routing and automatic selection of point-to-point connection, " or use of one or more MCU's.
- the resource scheduler may operate on an intuitive web interface requiring no additional installa- tion on the user terminal, other than a conventional web browser.
- an initiator of an ad hoc conference will, if us- ing conference facilities as defined in the state of the art, have a GUI, familiar to the users of management tools as Outlook, Notes etc., with calendars showing resource allocation both with regard to conference equipment as well as with regard to meeting rooms.
- the establishing of the conference will have many features in common with the plan- ning of meetings, thus the initiator has to find out whether the needed resources are available, and verify whether the wished conference participants are present. Thereafter a conference call can be established by, for in- stance, clicking on the phone numbers of the invited participants on a GUI.
- ad hoc should be as intuitive as using instant messaging (IM) or a telephone.
- IM instant messaging
- the ad hoc conference can be forced to interruption without any notification given to the participants.
- Video confer- ences scheduled using the Conference Management Systems are planned ahead of time with a list of invited participants, a start time, and an end time.
- the Conference Management Systems will be responsible for checking available Video conferencing resources for the requested time, connect the invited participants at the start time given for the conference, and disconnect all the participants at the conference end time.
- Ad Hoc audio/video conferences By attempting to manage Ad Hoc audio/video conferences in the same environment, one needs to address certain new issues. As an Ad Hoc audio/video conference has no known end time, the Conference Management Systems cannot set up an end time for the audio/video conference resource in question, and hence cannot predict when the resources are ready for another conference.
- Figure 1 illustrates in a schematically way two scenarios within ad hoc conferencing according to the present invention
- Figure 2 illustrates a use case for establishment of an ad hoc conference according to the present invention
- Figure 3 is a flow sheet illustrating the steps of a method for registering a scheduled conference according to one aspect of the present invention
- Figure 4 is a flow sheet illustrating the steps of a method for starting an Ad Hoc Conference according to one aspect of the present invention
- the main goal of the present invention is to add flexibil- ity into audio/video conferencing systems, hence increasing the use of such systems, as well as decreasing the time the audio/video conferencing systems are booked but not in use.
- mixed media should be understood as sound data, picture data; either still pictures or video, exchange of any other digital data or any combination thereof.
- -One needs a flexible method for allocating mixed media conference resources where the conferences utilizes packet and/or circuit switching for communication between one or more users specified in that a user establishing a first conference session can monitor the availability of other users sharing a common notification server, by monitoring whether there has been any activity on a personal computer, client or the like for a particular period of time.
- -One needs a method that can establish ad hoc conferences without interfering with scheduled conferences.
- the idea is to reserve a fair amount of time for an ad hoc conference, or to protect ongoing conferences or scheduled conferences with a protec- tional prebuffer attached to the ongoing or scheduled conference, given a start time earlier than the start time of the ongoing, or scheduled conference, and further to apply a set of rules that secure the duration of an ad hoc conference.
- the ad hoc conference should, for the user, not appear as having an end time, as long as no scheduled conferences are conflicting with the ad hoc conference.
- a general expression for run time conditions of a current, or ongoing conference, according to the present invention, is given below; the expression is expressing conditions necessary for running a conference, further the conditional tests will be executed with a repetitive interval period of ⁇ t, hence the conditional test will be executed at n -At, where n is a positive integer,
- t ⁇ i is the starting time of a first ad hoc conference session
- t 2 is a finishing time of a first ad hoc conference
- t 3 is the starting time of a second conference session
- t is the starting time of a prebuffer, added to already established or scheduled conferences
- ⁇ i is the length of prebuffers, or it is a "preset" length of conferences without scheduled end time
- ⁇ t is a value for repetition intervals for conditional testing of run time condition for a current session.
- the conference when a user starts a conference according to the present invention, the conference will be scheduled with a start time that will be the present time, ti, and a tentative end time, t 2 . Further, the length of the session will be: t 2 - A first period of time ⁇ t into the conference the management system according to the present invention will, attempt to extend the end time, t 2 with a period ⁇ t. If there are no upcoming conferences that will conflict with the new end time, t 2 , of the ad hoc conference, then the end time, t 2 , will be moved without the participants being alerted.
- the new end time, t 2 conflicts with an upcoming scheduled conference
- the new end time, t 2 will be set to the start time, t 3 , of the second conference, and the participants of the ad hoc conference will be notified about termination of the conference and about the end time, t 2 .
- the participants taking part in this conference session will be notified of the fixed end time.
- the last expression deduced from (1.2) is t c +0 j + ⁇ t > t 3 > t c ; when this condition is met one will allocate resources for the mixed media conference where a fixed end time of the session will be set to t 3 , or substantially equal to t 3 , thus t 2 ⁇ t 3 . Further, the participants taking part in this conference session will be notified of the fixed end time, however if t c + ⁇ t ⁇ t 3 one will inform the participants taking part in the conference that it will be terminated shortly and preferably before an extra ⁇ t period. If the ongoing conference has a higher or equal priority than the conference scheduled to start at t 3 , then the conference manage- ment system can give runtime priority to the ongoing conference, thus rejecting the scheduled one.
- the ad hoc conference end time, t 2 will be set to the start time of the upcoming scheduled conference.
- the participants of the ad hoc con- ference will be alerted of the end time, t 2 . This will only happen if t 2 causes the conference to have duration less than the set buffer amount of time.
- FIG. 2 A practical example of the latter method involving two users; a first user establishing an ad hoc conference and a second user who attempts to establish a scheduled conference, is shown in figure 2. It can be seen from this figure that the second user cannot establish a scheduled conference with a start time that is in conflict with an ongoing conference in progress, either the ongoing conference is a scheduled one or an ad hoc conference according to the present invention.
- the second user will manage to establish his conference when the start time of his conference is greater than or equal to the current time added with a default or preset value for the length of the first session.
- this second embodiment can be expressed as a special case of the first embodiment, where ⁇ t -» 0 , hence we will have a continuous conditional testing.
- the expression for the run time situation for an ongoing confer- ence will be simpler and more intuitative.
- the expressions according to the second embodiment of the present invention will be:
- timing buffers Using the basic idea of timing buffers, one can imagine a solution where each scheduled conference has a buffer in front of its start time ti. This buffer will be of a length default, or eligible, and when an ongoing conference conflicts with this prebuffer the participants of this ongoing conference will be notified by the Conference Management System. This notification will inform the participants of the ongoing session about termination of the session within a specific period of time, the time being equal or shorter than the length of the prebuffer.
- one of the main concepts of the present invention is the addition of buffers, either it be added to an ongoing conference at its end time, or the buffer will have its start time subtracted from a scheduled conference start time - a prebuffer, i.e. a buffer having a start time earlier than its corresponding conference.
- a prebuffer i.e. a buffer having a start time earlier than its corresponding conference.
- a scenario involving establishment of mixed media communication between one or more users utilizing circuit switched or packet switched network in a conference is described as a two step method where the first step comprises;
- t 3 being the start time of a new session
- t c is the current time or the real time ⁇ i, being the length of a buffer in front of t 3 .
- the conditions for allocation of conference resources are the same as for the second embodiment, further the run time conditions and the terminating conditions are analogue to those shown for the second embodiment.
- the present invention introduces a method for determining the end-point that is best suited for use by a user. This method takes into consideration user preferences, availability of systems, etc.
- a first aspect of the present invention reduces the need for human knowledge of user equipment when scheduling con- ferences and/or meetings, as the system selects the best suited system automatically; however, the problem of not knowing the availability of the actual participants when scheduling ad hoc conferences still remains.
- Presence applications are often found in conjunction with Instant Messaging (IM) applications. These applications extend the presence application by adding the possibility of exchanging information between present "buddies".
- IM Instant Messaging
- the in- formation exchange may include applications like chat, messaging and conferencing.
- the connection between the presence application and the resource scheduler may appear for the users in many ways. The most convenient would probably be to integrate the resource scheduler in the IM/Presence application or vice versa. Hence, allowing the user to see the presence of both the user and system.
- a double click on a "buddy” in a "buddy list” may e.g. execute an immediate initiation of a call set up to the "buddy", using the most preferred idle system associated with the "buddy”.
- a click on further "buddies” preferably includes them in the call constituting a conference, all provided by the functionalities already available in the resource scheduler.
- the resource scheduler may be instructed by requests from the presence application using the proprietary protocol. Alternatively, all or some of the conference features available in the resource scheduler may be integrated as IM functions in the presence application.
- the ordinary scheduler interface will then be replaced by the GUI of the presence application initially downloaded from the server.
- the presence application, resource scheduler and the prioritizing mechanism may be further integrated in that the above-discussed server is being utilized for supporting the selection procedure of the resource scheduler illustrated in figure 2.
- the information required for the selection procedure to work has to be distributed. Such information may include system availability, qualified numbers, capabilities, usage cost, location and priority lists.
- This information needs to be published to a distributed information center.
- this center may be the presence server, as this server already stores information about the users or "buddies".
- the selection procedure then utilizes the informa- tion stored in the distributed server to determine which systems to use when setting up a conference.
- the presence application will then be responsible for maintaining system information on the server.
- the presence application will also request system information from the server when the user issues a conference request.
- the presence application will retrieve information about other participants from the server, and provide this information for the resource scheduler, and the resource scheduler will initiate the conference with the participants from the presence applica- tion.
- the connection between the resource scheduler, presence application and presence server is shown in
- the present invention provides many advantages in connection with scheduling and set-up of calls and conferences.
- a user does not need to know which systems other users can access.
- the prioritizing mechanism there is no need for users to know which systems to book when having a conference with a given person.
- all the user has to do is to select the person, and the system itself selects the correct system to use for that person by utilizing the associated pri- ority list in addition to other resource availability, system capabilities, location of user, etc.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200580005106XA CN1922875B (en) | 2004-01-16 | 2005-01-17 | A method for adhoc buffer |
JP2006549174A JP2007527661A (en) | 2004-01-16 | 2005-01-17 | Method for temporary buffer |
EP05704637A EP1709802A1 (en) | 2004-01-16 | 2005-01-17 | A method for adhoc buffer |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20040218 | 2004-01-16 | ||
NO20040218A NO319437B1 (en) | 2004-01-16 | 2004-01-16 | Procedure for ad hoc buffer |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005069620A1 true WO2005069620A1 (en) | 2005-07-28 |
Family
ID=34793407
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/NO2005/000021 WO2005069620A1 (en) | 2004-01-16 | 2005-01-17 | A method for adhoc buffer |
Country Status (6)
Country | Link |
---|---|
US (1) | US7561537B2 (en) |
EP (1) | EP1709802A1 (en) |
JP (1) | JP2007527661A (en) |
CN (1) | CN1922875B (en) |
NO (1) | NO319437B1 (en) |
WO (1) | WO2005069620A1 (en) |
Cited By (4)
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JP2007201663A (en) * | 2006-01-25 | 2007-08-09 | Hajime Fukushima | Communication node |
GB2444580A (en) * | 2006-12-07 | 2008-06-11 | Toshiba Kk | Conference set up using priority and the remaining resources in the Multi-point Control Unit (MCU) |
WO2009083410A1 (en) * | 2007-12-27 | 2009-07-09 | Siemens Aktiengesellschaft | Method and device for operating an audio and/or videoconference having at least two participants |
CN104506600A (en) * | 2014-12-16 | 2015-04-08 | 苏州海博智能系统有限公司 | Computation resource sharing method, device and system as well as client side and server |
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US7684356B2 (en) * | 2005-04-22 | 2010-03-23 | Alcatel Lucent | System and method for providing hotline and preemption features in real-time communications using presence and preference information |
US20070081651A1 (en) * | 2005-09-28 | 2007-04-12 | Radha Iyer | Method and apparatus for automatic conference call invocation based on user presence |
US20070171846A1 (en) * | 2006-01-25 | 2007-07-26 | Chia-Hsin Li | Modeling, managing, and scheduling videoconference meetings |
US7743101B2 (en) * | 2006-06-07 | 2010-06-22 | Cisco Technology, Inc. | Techniques for providing caller ID of participants in a conference call invitation |
WO2008009090A1 (en) * | 2006-07-21 | 2008-01-24 | Bce Inc | Method, system and apparatus for handling establishment of a communication session |
CN102016816A (en) * | 2008-04-30 | 2011-04-13 | 惠普开发有限公司 | Messaging between events |
BRPI0822250A2 (en) | 2008-04-30 | 2019-04-09 | Hewlett Packard Development Co | event management system, event management method and program product |
US8817697B2 (en) * | 2008-06-05 | 2014-08-26 | Qualcomm Incorporated | System and method for minimizing call setup latency in a group communication among wireless communication devices |
US8060617B2 (en) * | 2008-12-19 | 2011-11-15 | Cisco Technology, Inc. | Reserving network resources during scheduling of meeting event |
US8275109B2 (en) * | 2009-03-31 | 2012-09-25 | International Business Machines Corporation | Administering participant attendance of teleconferences |
US8649813B2 (en) * | 2009-04-13 | 2014-02-11 | Qualcomm Incorporated | Latency improvement methods in native PTT gateway for a group call with dispatch console clients |
US20100325214A1 (en) * | 2009-06-18 | 2010-12-23 | Microsoft Corporation | Predictive Collaboration |
US20110161507A1 (en) * | 2009-12-31 | 2011-06-30 | O'sullivan Patrick Joseph | Method and system for time-limitation settings in communication sessions |
US8743171B2 (en) * | 2011-08-10 | 2014-06-03 | Polycom, Inc. | Automated calendared conference rescheduling and forwarding |
CN102348098A (en) * | 2011-11-10 | 2012-02-08 | 苏州阔地网络科技有限公司 | Method and system for distributing resource of video conference server |
US8880697B1 (en) | 2012-04-09 | 2014-11-04 | Google Inc. | Using rules to determine user lists |
US9319634B2 (en) * | 2012-07-18 | 2016-04-19 | Polycom, Inc. | Facilitating multi-party conferences, including allocating resources needed for conference while establishing connections with participants |
WO2014146238A1 (en) * | 2013-03-19 | 2014-09-25 | 华为技术有限公司 | Site booking method, apparatus, and conferencing system |
CN106714000A (en) * | 2015-07-14 | 2017-05-24 | 三亚中兴软件有限责任公司 | Control method, system and device of conference terminal authority |
US10652286B1 (en) * | 2016-10-10 | 2020-05-12 | Amazon Technologies, Inc. | Constraint based communication sessions |
EP3903451A4 (en) | 2018-12-29 | 2022-08-10 | Citrix Systems, Inc. | System with real-time detection and resolution of conflicts for shared resources |
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- 2005-01-17 WO PCT/NO2005/000021 patent/WO2005069620A1/en active Application Filing
- 2005-01-17 JP JP2006549174A patent/JP2007527661A/en active Pending
- 2005-01-17 EP EP05704637A patent/EP1709802A1/en not_active Ceased
- 2005-01-17 CN CN200580005106XA patent/CN1922875B/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
EP1709802A1 (en) | 2006-10-11 |
CN1922875A (en) | 2007-02-28 |
CN1922875B (en) | 2010-07-14 |
US20050174951A1 (en) | 2005-08-11 |
NO319437B1 (en) | 2005-08-15 |
JP2007527661A (en) | 2007-09-27 |
NO20040218L (en) | 2005-07-18 |
US7561537B2 (en) | 2009-07-14 |
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