CN103167191A - Detection method of speaker in telephone conference based on NDN - Google Patents
Detection method of speaker in telephone conference based on NDN Download PDFInfo
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- CN103167191A CN103167191A CN2011104280845A CN201110428084A CN103167191A CN 103167191 A CN103167191 A CN 103167191A CN 2011104280845 A CN2011104280845 A CN 2011104280845A CN 201110428084 A CN201110428084 A CN 201110428084A CN 103167191 A CN103167191 A CN 103167191A
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Abstract
The invention relates to a method of detecting a speaker in an ACT telephone conference. The method includes a step 101), a step 102) and a step 103). The step 101) is that in the ACT telephone conference, an audience list is maintained at a conference participant end. The conference participant is informed that a speaking node is arranged as the emerging information of a new speaker by using a broadcast way when the new speaker emerges in conference participants. The step 102) is that the notice is replied by using the maintained audience list after the audience receives the information. Specific information of the new speaker node is inquired by a request packet delivered by an audience node. The step 103) is that the request packet delivered by all audiences is replied by the stored speaker list by the new speaker node. The conference participants comprise all the audiences and all the speakers. According to the detection method of the speaker in the telephone conference based on NDN, the audience is informed passively that the new speaker emerges, thus the expenditure of a listen-in user in the telephone conference is saved. Useless flow transferring of a network is reduced. A network bandwidth load is relieved. The network transferring efficiency is effectively improved.
Description
Technical field
The present invention relates to a kind ofly in the voice conferencing based on NDN, the user is for spokesman's detection method.
Background technology
ACT (Audio Conference Tool) is based on a kind of voice conferencing technology of NDN.The mode of ACT employing content identification goes to detect meeting and spokesman just in session, and the spokesman that then whereabouts is different obtains speech data, rather than depends on present centralized control service.If there is new spokesman to add in meeting, the listener need to constantly send interest bag just can know this new spokesman's appearance, this has caused extra expense to the user, has increased flow unnecessary on the network.
In NDN, communication is brought in leading by reception, i.e. data requester.The user wraps request msg by sending interest, has comprised the name that is used for identifying the data that will ask inside this bag.Router forwards the interest bag by FIB (the Forwarding Information Base) table of searching oneself, and remembers the port that this bag arrives.In case the interest bag arrives the node that comprises institute's request msg, corresponding data data bag just is sent out back.The reverse path that this packet arrives along the interest bag is back to the user place.
ACT (Audio Conference Tool) is based on a kind of voice conferencing technology of NDN.The mode of ACT employing content identification goes to detect meeting and spokesman just in session, and the spokesman that then whereabouts is different obtains speech data, rather than depends on present centralized control service.As a kind of voice conferencing instrument, ACT provides following three basic service for the user that will participate in a conference: the propagation of speech data in the spokesman in the meeting that detection will be held, detection meeting, meeting.
1) detection of meeting
In ACT, allow the user to remove to obtain ongoing or arranged meeting lists, perhaps issue a new conferencing information to potential audience.In order to obtain the relevant information of certain meeting, the user must first know the name data of this meeting.Therefore, meeting publisher and participant must observe identical the criterion of nomination on the name prefix of meeting data of description.Such as, a meeting name in the NDN scope can be: first name part of/ndn/broadcast/conference/conference-list. has defined the working range (on the NDN testing stand) of network, the second part has been pointed out the broadcasting NameSpace, third part has defined application type, and last part has defined the interested data of participant.
According to the naming rule that has established, the meeting publisher passes through the suitable name of prefix back interpolation at list of conference, consists of this meeting data of description with this, issues meeting.Owing to may there being a plurality of different meeting data of description bags, they can satisfy the interest bag with this conference prefix :/ndn/broadcast/conference/-conference-list, so must guarantee that the user can know each meeting under this prefix.In addition, ACT deletion has been completed from list of conference or meeting that cancel immediately.
The meeting publisher passes through to issue meeting at one/ndn/broadcast/conference/conference-list of local maintenance form, such as, certain node will be issued the conferencing information of an icn2011 by name, first in list of local maintenance, with corresponding interest bag coupling, when it receive that other node sends comprise the interest bag of this name prefix the time, return to the packet of the relevant conferencing information of this requesting node, this node has just been known the relevant information of icn2011 meeting like this, comprises the medium type of meeting start time, support etc.
2) spokesman's detection in meeting
The user who participates in a conference is divided into two kinds: produce the spokesman of speech data and the audience of request speech data.ACT only need to know the spokesman in meeting, in order to obtain relevant data there from them.Spokesman's detection is completed when the user joins in meeting.As step 1 in Fig. 1, shown in 2, the mode that the user goes to detect the spokesman is with this meeting to be detected the same.Such as, user by sending interest bag :/ndn/broadc-ast/conference/[conference-name]/speaker-list goes for corresponding spokesman.As the user in speech during pattern, ACT safeguards the data of a SDP (Session Description Protocol) form in buffer memory, these data by spokesman's name be attached to/back of speaker-list generates, show it oneself is spokesman in meeting, in order to reply the audience right/speaker-list asks bag.During in listen mode, be no longer the spokesman this moment as the user, and ACT delete these SDP data from buffer memory, and stop right/ response that speaker-list request is wrapped.
3) transmission of speech data
As step 3 in Fig. 1, shown in 4, the name prefix of user by the content-data that sends to the spokesman to make a speech is that the interest of destination wraps request msg.Each spokesman names speech data by adding a name prefix that is independent of topological structure.Because a spokesman may produce a plurality of data flow, more name composition such as device id can be attached to the back of meeting name prefix in order to distinguish different data flow.The device id representative produces the physical equipment of data flow, and it should be unique in local network, so router is known the interest bag that how to go the Forward-reques specific data stream.
The data stream fragment that the spokesman produces is to name continuously and be stored in a buffer memory that recycles.The name form of a data fragment may be :/cqu.edu/ccee/tanqian/[device-id]/[codec-name]/[seg--num].
When the user adds meeting midway, when not knowing the fragment sequence of certain data flow of transmitting, it goes for by sending the interest bag latest data section of asking under this data flow name prefix.When this data segment returned, the user had just known the up-to-date sequence number that is using, and in follow-up request the clear and definite sequence number that indicates desired data.
If there is new spokesman to add in meeting, the listener need to constantly send the interest bag just can know this new spokesman's appearance, as step 5 in Fig. 1, shown in 6.This has caused extra expense to the user, has increased flow unnecessary on the network.
In the ACT meeting, the listener need to constantly send interest bag just can know this new spokesman's appearance, this has caused extra expense to the user, has increased flow unnecessary on the network, can cause network congestion to a certain extent.
It is a kind of in the voice conferencing based on NDN that the present invention is based on providing, and the audience is for emerging spokesman's detection method.By locate to safeguard a listener-list form each audience, when having new spokesman to occur, it only need to send corresponding interest bag to all audiences, and after the audience received this bag, just knowing had new spokesman to occur.Then the audience outwards sends the interest bag again, detects this emerging spokesman, realizes subsequently the transmission of data.Make like this audience change passive wait spokesman into and notify the interest arrival of bag from the interest bag of outwards sending of continuous active, thereby alleviated network burden, reduced audience's expense.Wherein, the interest bag is called again the request bag.
Summary of the invention
The object of the invention is to, for the detection method that overcomes the spokesman that prior art takes in the ACT videoconference causes extra expense to the user, increase unnecessary flow on network, and then cause to a certain extent problems such as network congestion, thereby the method and system of spokesman in a kind of ACT of detection videoconference are provided.
For achieving the above object, the invention provides the method for spokesman in a kind of ACT of detection videoconference, the method is safeguarded audience's list by holding the audience, and in order to detect spokesman's appearance, described method is:
Step 101) in the ACT videoconference, safeguard audience's list by holding the meeting participant, when having new spokesman to occur in the meeting participant, this speech node adopts its information that occurs as new spokesman of mode notification of meetings participant of broadcasting;
Step 102) after after the audience receives this information, reply above-mentioned notice with audience's list of its maintenance, then audience's node sends the specifying information of the new spokesman's node of request bag inquiry again;
Step 103) the request bag that again the list of speakers reduction into possession audience of its storage sent of new spokesman's node;
Wherein, described meeting participant comprises: all audiences and all spokesmans.
In such scheme, described step 101) further comprise following substep:
Step 101-1) audience first outwards sends the interest bag, obtains the relevant information of its meeting that will participate in;
Step 101-2) audience adds meeting at first in meeting;
Step 101-3) after the audience adds meeting, in one/ndn/broadcast/conferen-ce/listener-list audience of local maintenance list, in order to the new spokesman of follow-up discovery;
Step 101-4) carry out in process in meeting, if new spokesman occurs, this new spokesman initiatively goes to seek, notify all audiences.
Described step 101-1) the interest bag that audience outwards sends take/ndn/broadcast/conference/conference-list as the destination goes to obtain the relevant information of meeting.
The system of spokesman in a kind of ACT of detection videoconference also was provided based on said method the present invention, and this system safeguards audience's list by holding the audience, and in order to detect spokesman's appearance, described system comprises:
Audience's list block is used for safeguarding audience's list information;
Notification module is used for sending broadcast announcement to all nodes when new spokesman's node occurs;
First replys request module, is used for replying and asking the relevant information of new spokesman's node;
Second replys module, is used for new spokesman's node and replys the list of speakers information of its maintenance to the audience;
Wherein, described meeting participant comprises: all audiences and all spokesmans.
In technique scheme, described system also comprises as lower module:
Be positioned at the module of obtaining the meeting relevant information on audience's node, be used for the audience and first outwards send the interest bag, obtain the relevant information of its meeting that will participate in;
Add the meeting module, the information that is used for providing according to meeting relevant information module adds meeting at first in meeting.
Described first replys request module further comprises:
The revertant module is used for audience's list information of node maintenance is replied the announcement information that new spokesman's node sends; Solicited message is used for sending to new spokesman's node the relevant information that the request bag obtains this spokesman's node.The interest bag that the described module of obtaining the meeting relevant information is outwards sent take/ndn/broadcast/conference/conference-list as the destination goes to obtain the relevant information of meeting.
Compared with prior art the invention has the advantages that: proposed first in the ACT videoconference, safeguarded audience's list by holding the audience, in order to be sought by the spokesman.Safeguard audience's list by locating the audience to increase, implementation method is simply efficient, and can not introduce any destabilizing factor to network; Active characteristic when taking into full account new spokesman and adding meeting effectively solves the audience's blind detection spokesman's who exists in conventional method defective, makes detection method more scientific and reasonable; Passive notice has new spokesman to occur by making the audience, has saved the expense of listening to the user in the videoconference, has reduced the useless traffic transport on the network, has alleviated network bandwidth load, has effectively improved network transmission efficiency.
Description of drawings
Fig. 1 is the user's request msg sequence signaling diagram in the ACT videoconference in prior art;
Fig. 2 is the user's request msg sequence signaling diagram in the ACT videoconference after employing the inventive method;
Fig. 3 is the ACT TeleConference Bridge Structure and Process comparison diagram that adopts the inventive method front and back;
Fig. 4 is the scene schematic diagram that the new spokesman of the embodiment of the present invention notifies the audience to occur.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
For achieving the above object, the invention provides a kind ofly in the voice conferencing based on NDN, the audience is for emerging spokesman's detection method.By locate to safeguard a listener-list form each audience, when having new spokesman to occur, it only need to send corresponding interest bag to all audiences, and after the audience received this bag, just knowing had new spokesman to occur.Then the audience outwards sends the interest bag, detects this emerging spokesman, realizes subsequently the transmission of data.Make like this audience change passive wait spokesman into and notify the interest arrival of bag from the interest bag of outwards sending of continuous active, thereby alleviated network burden, reduced audience's expense.
The invention discloses a kind ofly in the voice conferencing based on NDN, the user belongs to the future network technical field for spokesman's detection method.This detection method is based on the network architecture centered by content.In the ACT videoconference, safeguard audience's list by holding the audience, when having new spokesman to occur, this speech node initiatively goes to seek, notify the audience.Then the audience know have new spokesman to occur after, then go to give out a contract for a project and seek this node.
User's request msg sequence chart after employing the inventive method as shown in Figure 2.When the audience prepares to participate in certain meeting, first outwards send take/ndn/broadcast/conference/conference-list and go to seek the relevant information of meeting as the interest bag of destination, comprise the data transmission, message transmission rate of meeting start time, support etc.When meeting began, the audience who participates in a conference was in listener-list data list of local maintenance, such as ,/ndn/broadcast/conference/listener-list/tanqian oneself is an audience in order to show.Simultaneously the audience is by sending take/ndn/broadcast/conference/[conference-name]/speaker-list goes to seek the spokesman of meeting as the interest bag of destination, the spokesman replys corresponding data bag after receiving this interest bag, show it oneself is the spokesman, and inform the prefix of its speech content, as :/cqu.edu/-ccee/tanqian/[device-id]/[codec-name]/, step 1 as shown in Figure 2,2.The audience is knowing that the spokesman makes a speech after the name prefix of content-data, directly sends interest bag request msg take this name prefix as the destination to this spokesman, and the spokesman replys corresponding speech data, step 3 as shown in Figure 2,4.
When meeting is carried out, may have new spokesman occurs, when having node to become new spokesman, this node outwards broadcasting take/ndn/broadcast/conference/[conference-name]/listener-list/ is the interest bag of destination, step 5, have new spokesman to occur for allowing the audience know as shown in Figure 2.Due to audience before at one/ndn/broadcast/conference/[conference-name of local maintenance]/liste-ner-list/tanqian audience's list, so the interest bag that this moment, the user sent with the new spokesman of the data recovery in this list, step 6 as shown in Figure 2.Then, the user outwards sends take/ndn/broadcast/conferen-ce/[conference-name again]/speaker-list is the interest bag of destination, goes to obtain the name prefix of new spokesman's speech content-data.The back just can directly be sent interest to this name prefix and be wrapped to obtain speech data, namely repeats the step 1 of front, 2,3,4.
Before and after whole data flow to such as shown in Fig. 3 (a), (b).
Advantage of the present invention is: when voice conferencing carries out, the unnecessary interest that always outwards sends of audience wraps the appearance of going to detect new spokesman, but initiative has been sent to the spokesman, when the spokesman occurs, notify the audience to have new spokesman to occur, the audience just sent interest and went to detect new spokesman this moment, had saved audience's expense, reduce the traffic transport on the network, improved network transmission efficiency.
Embodiment
In the present invention, the user will participate in certain meeting, must first find the information such as time started, supported data transformat of relevant meeting, after meeting begins, the spokesman detected by sending the internet bag, then directly to this spokesman's request msg.The whole process of voice conferencing is comprised of two parts, and potential user carried out the meeting detection before this, in order to find the interested meeting of user; Then be meeting when carrying out, detection and the transfer of data of user to the spokesman.Whole meeting is divided into altogether following seven steps, and as shown in Fig. 3 (b), emerging spokesman detects as shown in Figure 4.
Step 1, audience are first outwards sent the interest bag, go to obtain to want the meeting relevant information that participates in.
Step 2, audience add meeting at first in meeting.
Step 3, audience are when just beginning to add meeting, in one/ndn/broadcast/conferen-ce/listener-list audience of local maintenance list, in order to the new spokesman of follow-up discovery.As shown in node A, B, F in Fig. 4, safeguard respectively audience's data list, as :/ndn/broadcast/conference/listener-list/A, the internet bag that sends in order to respond new spokesman.By current spokesman being detected, carry out with it data communication simultaneously.
Step 4, carry out in process in meeting, new spokesman occurs, and notifies the audience.To make a speech as node E in Fig. 4, namely become new spokesman, first outwards broadcasting internet wraps :/ndn/broadcast/conference/l-istener-list/, and after receiving this bag, node A, B, F respond corresponding packet, and so just knowing has new spokesman to occur.
Step 5, audience detect new spokesman's appearance, send the interest bag to it, outwards send the interest bag as node A, B, F in Fig. 4, seek new speech node, and obtain its content-data name prefix.
Step 6, audience and new spokesman carry out data communication.Know it is after node E occurs as node A, B, F in Fig. 4, directly send internet bag request speech data to it.
Step 7, meeting adjourned, and the user withdraws from meeting.
Need to prove at last, experiment method described in embodiment only is used for illustrating the feasibility of technical scheme software algorithm of the present invention but not is confined to this example, algorithm is through the lot of experimental data checking, be true and reliable, the function of collocation hardware just can realize technical scheme of the present invention.Although with reference to embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, technical scheme of the present invention is modified or is equal to replacement, do not break away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (7)
1. method that detects spokesman in the ACT videoconference, the method is safeguarded audience's list by holding the audience, in order to detect spokesman's appearance, described method is:
Step 101) in the ACT videoconference, safeguard audience's list by holding the meeting participant, when having new spokesman to occur in the meeting participant, this speech node adopts its information that occurs as new spokesman of mode notification of meetings participant of broadcasting;
Step 102) after after the audience receives this information, reply above-mentioned notice with audience's list of its maintenance, then audience's node sends the specifying information of the new spokesman's node of request bag inquiry again;
Step 103) the request bag that again the list of speakers reduction into possession audience of its storage sent of new spokesman's node;
Wherein, described meeting participant comprises: all audiences and all spokesmans.
2. spokesman's method in detection according to claim 1 NDN videoconference, is characterized in that described step 101) further comprise following substep:
Step 101-1) audience first outwards sends the request bag, obtains the relevant information of its meeting that will participate in;
Step 101-2) audience adds meeting at first in meeting;
Step 101-3) after the audience adds meeting, in one/ndn/broadcast/conferen-ce/listener-list audience of local maintenance list, in order to the new spokesman of follow-up discovery;
Step 101-4) carry out in process in meeting, if new spokesman occurs, this new spokesman initiatively goes to seek, notify all audiences.
3. spokesman's method in detection according to claim 1 NDN videoconference, it is characterized in that described step 101-1) the interest bag that outwards sends take/ndn/broadcast/conference/conference-list as the destination of audience go to obtain the relevant information of meeting.
4. system that detects spokesman in the ACT videoconference, this system safeguards audience's list by holding the audience, in order to detect spokesman's appearance, described system comprises:
Audience's list block is used for safeguarding audience's list information;
Notification module is used for sending broadcast announcement to all nodes when new spokesman's node occurs;
First replys request module, is used for replying and asking the relevant information of new spokesman's node;
Second replys module, is used for new spokesman's node and replys the list of speakers information of its maintenance to the audience;
Wherein, described meeting participant comprises: all audiences and all spokesmans.
5. spokesman's system in detection NDN according to claim 4 videoconference, is characterized in that, described system also comprises as lower module:
Be positioned at the module of obtaining the meeting relevant information on audience's node, be used for the audience and first outwards send the interest bag, obtain the relevant information of its meeting that will participate in;
Add the meeting module, the information that is used for providing according to meeting relevant information module adds meeting at first in meeting.
6. spokesman's system in detection NDN according to claim 4 videoconference, is characterized in that, described first replys request module further comprises:
The revertant module is used for audience's list information of node maintenance is replied the announcement information that new spokesman's node sends;
Solicited message is used for sending to new spokesman's node the relevant information that the request bag obtains this spokesman's node.
7. spokesman's method in detection according to claim 5 NDN videoconference, it is characterized in that, the described module of obtaining the meeting relevant information is outwards sent take/ndn/broadcast/conference/conference-list and is gone to obtain the relevant information of meeting as the request bag of destination.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110428084.5A CN103167191B (en) | 2011-12-19 | 2011-12-19 | Detection method of speaker in telephone conference based on NDN |
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| CN201110428084.5A CN103167191B (en) | 2011-12-19 | 2011-12-19 | Detection method of speaker in telephone conference based on NDN |
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| CN103167191A true CN103167191A (en) | 2013-06-19 |
| CN103167191B CN103167191B (en) | 2015-06-17 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105915798A (en) * | 2016-06-02 | 2016-08-31 | 北京小米移动软件有限公司 | Camera control method in video conference and control device thereof |
| CN106851176A (en) * | 2017-03-23 | 2017-06-13 | 江苏大学 | Video meeting implementing method based on wechat |
| CN110460633A (en) * | 2019-06-29 | 2019-11-15 | 天津大学 | A kind of internet of things networking internodal data synchronization transfer method of content oriented |
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| WO2004014054A1 (en) * | 2002-08-02 | 2004-02-12 | Collabo-Technology, Inc. | Method and apparatus for identifying a speaker in a conferencing system |
| CN101179694A (en) * | 2007-11-23 | 2008-05-14 | 中兴通讯股份有限公司 | Issuing system and method of picturephone meeting |
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| WO2004014054A1 (en) * | 2002-08-02 | 2004-02-12 | Collabo-Technology, Inc. | Method and apparatus for identifying a speaker in a conferencing system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105915798A (en) * | 2016-06-02 | 2016-08-31 | 北京小米移动软件有限公司 | Camera control method in video conference and control device thereof |
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| CN110460633A (en) * | 2019-06-29 | 2019-11-15 | 天津大学 | A kind of internet of things networking internodal data synchronization transfer method of content oriented |
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| CN103167191B (en) | 2015-06-17 |
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