CN104065914A - Wireless terminal video conference system, realizing method and device - Google Patents

Wireless terminal video conference system, realizing method and device Download PDF

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Publication number
CN104065914A
CN104065914A CN201310084907.6A CN201310084907A CN104065914A CN 104065914 A CN104065914 A CN 104065914A CN 201310084907 A CN201310084907 A CN 201310084907A CN 104065914 A CN104065914 A CN 104065914A
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China
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terminal
video
information
video flowing
request
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CN201310084907.6A
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CN104065914B (en
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李铎
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China Mobile Communications Group Co Ltd
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China Mobile Communications Group Co Ltd
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Abstract

The embodiment of the invention provides a wireless terminal video conference system, realizing method and device. A WIFI hot spot function is introduced into a wireless terminal video conference. A terminal used as the WIFI hot spot can receive a conference joining request sent by another terminal, and a video access terminal is selected for the terminal. The terminal which requests to join a conference can acquire video stream from the video access terminal. Video distribution based on a peer to peer (Peer to Peer, P2P) topology structure is realized. According to the invention, a WIFI hot spot technology is used as the basis; even if an external wide area network is poor and even if the external wide area network is unavailable, the normal video conference can be carried out; the P2P topology structure is used to organize video distribution of the video conference; the bondage of a center stream media server is cast off; flow and calculation loads in the video conference are dispersed; and the high quality video conference can be normally carried out.

Description

A kind of wireless terminal video conferencing system, implementation method and device
Technical field
The present invention relates to the communications field, relate in particular to a kind of wireless terminal video conferencing system, implementation method and device.
Background technology
At present, most of wireless terminal video conferencing systems are because the resource (processor, internal memory, hard disk, battery etc.) of wireless terminal is limited, be all to adopt client/server (C/S) framework to realize the tasks such as the initiation of meeting, the control of participant's information, video conversion and distribution, born the calculation task of video distribution and high capacity by center streaming media server.
But unreachable when center streaming media server, or terminal wide-area network conditions of living in is not when being good, user just cannot organize video conference or video conference effect poor especially.How there is no center streaming media server, or outside wide-area network conditions is poor, even do not have, in situation that outside wide area network supports, still can carry out the also clear and definite solution of neither one of high-quality video conference.
Summary of the invention
The embodiment of the present invention provides a kind of wireless terminal video conferencing system, implementation method and device, be used for ensureing there is no center streaming media server, or outside wide-area network conditions is poor, even do not have, in situation that outside wide area network supports, still can carry out high-quality video conference.
A kind of wireless terminal video meeting implementing method, described method comprises:
Monitoring is connected to the request for conference that adds that the second terminal of the Wireless Fidelity WIFI focus of self correspondence sends;
Listen to described second terminal send add request for conference time, according to the set information of each first terminal, described first terminal is the terminal that has added video conference, from described first terminal, select video for described the second terminal and access terminal, the information that this video is accessed terminal sends to described the second terminal.
A kind of wireless terminal video conference implement device, described device comprises:
Message sink module, for monitoring the request for conference that adds that the second terminal of the Wireless Fidelity WIFI focus that is connected to self correspondence sends;
Message processing module, for described message sink module listen to described second terminal send add request for conference time, according to the set information of each first terminal, described first terminal is the terminal that has added video conference, selects video access terminal from described first terminal for described the second terminal;
Message transmission module, the information accessing terminal for the video that described message processing module is selected sends to described the second terminal.
A kind of wireless terminal video meeting implementing method, described method comprises:
Search Wireless Fidelity WIFI focus, and connect the WIFI focus corresponding to third terminal of initiating video conference;
Send and add request for conference to described third terminal;
Receive the video information of access terminal that described third terminal sends, access terminal and obtain video flowing from video corresponding to described video information of access terminal.
A kind of wireless terminal video conference implement device, described device comprises message transmission module, message sink module, message processing module and video receiving module, wherein:
Message transmission module, for searching for Wireless Fidelity WIFI focus, connects the WIFI focus corresponding to third terminal of initiating video conference, and sends and add request for conference to described third terminal;
Message sink module, for receive described third terminal according to described in add request for conference, the video information of access terminal of transmission;
Message processing module, for determine described third terminal that described message sink module receives according to described in add request for conference, when the video information of access terminal of transmission, trigger video receiving module;
Video receiving module, for according to the triggering of described message processing module, the described third terminal receiving from described message sink module according to described in add request for conference, the video corresponding to video information of access terminal of transmission accesses terminal and obtains video flowing.
A kind of wireless terminal video conferencing system, described system comprises the first terminal that adds video conference and second terminal of asking to add video conference, described first terminal comprises the third terminal for initiating video conference, wherein:
Described third terminal, for monitoring the request for conference that adds that the second terminal of the WIFI focus that is connected to self correspondence sends; Listen to described second terminal send add request for conference time, according to the set information of each described first terminal, from described first terminal, select video for described the second terminal and access terminal, the information that this video is accessed terminal sends to described the second terminal;
Described the second terminal, for searching for WIFI focus, and connects the WIFI focus that described third terminal is corresponding; Send and add request for conference to described third terminal, receive the video information of access terminal that described third terminal sends, access terminal and obtain video flowing from video corresponding to described video information of access terminal.
The scheme providing according to the embodiment of the present invention, introduces wireless terminal video conference by WIFI focus function.What can receive as the terminal of WIFI focus that other-end sends adds request for conference, and accesses terminal for this terminal selection video.Request adds the terminal of meeting to access terminal and to obtain video flowing from this video, thereby realizes the video distribution based on point-to-point (Peer to Peer, P2P) topological structure.Realize owing to the present invention is based on WIFI hot spot technology, even if make in outside wide-area network conditions poorly, even do not have, in situation that outside wide area network supports, still can carry out normal video conference.And adopt P2P topological structure to organize the video distribution of video conference, and break away from the constraint of center streaming media server, disperse flow and the computational load in video conference, further ensure normally carrying out of high-quality video meeting.
Brief description of the drawings
The structural representation of the wireless terminal video conferencing system that Fig. 1 provides for the embodiment of the present invention one;
The deployment architecture schematic diagram of the wireless terminal video conferencing system that Fig. 2 provides for the embodiment of the present invention one;
The flow chart of steps of the wireless terminal video meeting implementing method that Fig. 3 provides for the embodiment of the present invention two;
The flow chart of steps of the wireless terminal video meeting implementing method that Fig. 4 provides for the embodiment of the present invention four;
The flow chart of steps of the wireless terminal video meeting implementing method that Fig. 5 provides for the embodiment of the present invention five;
The structural representation of the wireless terminal video conference implement device that Fig. 6 provides for the embodiment of the present invention six;
The structural representation of the wireless terminal video conference implement device that Fig. 7 provides for the embodiment of the present invention seven;
The functional schematic of the terminal that Fig. 8 provides for the embodiment of the present invention eight.
Embodiment
In prior art, when center, streaming media server is unreachable, or terminal wide-area network conditions of living in is not fine, user cannot organize video conference or the poor especially problem of video conference effect, the embodiment of the present invention has proposed a kind of novel P2P framework wireless terminal conference system based on WIFI focus function, implementation method and device, can realize the terminal use in certain limit, as 10~20 terminal uses, there is no outside wide area network (Internet, GRPS), or the very poor environment of outside wide area network situation is (as suburb, mountain top etc.), in the situation of Huo Wu center streaming media server, still can carry out video conference.
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.And in the situation that not conflicting, the feature in embodiment and embodiment in the application can combine mutually.
Embodiment mono-,
The embodiment of the present invention one provides a kind of wireless terminal video conferencing system, the structural representation of this system can be as shown in Figure 1, comprise the first terminal that adds video conference and second terminal 12 of asking to add video conference, described first terminal comprises the third terminal 111 for initiating video conference, wherein:
Described third terminal 111, for monitoring the request for conference that adds that the second terminal of the WIFI focus that is connected to self correspondence sends; Listen to described second terminal send add request for conference time, according to the set information of each described first terminal, from described first terminal, select video for described the second terminal and access terminal, the information that this video is accessed terminal sends to described the second terminal;
Described the second terminal 12 is for searching for WIFI focus, and connects the WIFI focus that described third terminal is corresponding; Send and add request for conference to described third terminal, receive the video information of access terminal that described third terminal sends, access terminal and obtain video flowing from video corresponding to described video information of access terminal.
It should be noted that, in the present embodiment, the third terminal of initiating video conference utilizes the WIFI focus function of self, realizes the video conference between terminal.And third terminal can be considered as a terminal that has added video conference.And the second terminal is after the video going out from third terminal decision-making accesses terminal and obtains video flowing, is converted to the terminal that has added video conference.
In the present embodiment, by WiFi focus function is introduced to wireless terminal video conferencing system, make terminal use in the situation that extraneous network condition is not good, still holding video conference whenever and wherever possible, makes wireless terminal video conferencing system have good versatility.
Simultaneously, for wireless terminal resource-constrained and band-limited feature, adopt the P2P topological structure without center streaming media server, not only make wireless terminal video conferencing system more have versatility, and flow and computational load are disperseed, can also improve the total quality of video conferencing system.
Concrete, described the second terminal 12 is for accessing terminal and obtain video flowing from video corresponding to described video information of access terminal, comprise: to video corresponding to described video information of access terminal access terminal send obtain video flowing request, and receive this video access terminal send video flowing.
Described third terminal 111 also, for the image according to setting speed collection self screen display, forms continuous video flowing, and this video is saved to the distribution buffer queue of self, and described distribution buffer queue is used to other-end that this video flowing is provided.In the present embodiment, the video flowing transmitting between each terminal in wireless terminal video conferencing system, is the video flowing that image that third terminal collects forms.
After described the second terminal 12 is also obtained video flowing for accessing terminal from video, preserve the broadcasting buffer queue of this video flowing to self, described broadcasting buffer queue is used for playing this video flowing, and preserve the distribution buffer queue of this video flowing to self, to access terminal this video flowing be provided as video.In the present embodiment, the second terminal, after obtaining video flowing, is play this video flowing except can be used as first terminal, can also serve as first terminal and continue this video flowing of distribution.
Further, in first terminal, can also comprise non-for initiating the 4th terminal 112 of video conference, described the 4th terminal 112, send to described third terminal the video flowing synchronized timestamp request of obtaining for timing, in the time receiving the second video flowing timestamp, determine the time of delay between the first video flowing timestamp and described the second video flowing timestamp, described the first video flowing timestamp is the video flowing timestamp in described the 4th terminal, described the second video flowing timestamp is that described third terminal is according to the video flowing timestamp of described video flowing synchronized timestamp request feedback, and in the time that be greater than set point this time of delay, send the request of synchronization video stream to described third terminal,
Described third terminal 111 is also in the time receiving described synchronization video stream request, according to the set information of each described first terminal, from first terminal, select video for described the 4th terminal and access terminal, the information that this video is accessed terminal sends to and sends described the 4th terminal;
Described the 4th terminal 112 also for video corresponding to information accessing terminal to the video receiving access terminal send obtain video flowing request, receive this video access terminal send video flowing.
Further, after described the 4th terminal 112 is also obtained video flowing for accessing terminal from video, preserve the broadcasting buffer queue of this video flowing to self, to play this video flowing, and preserve the distribution buffer queue of this video flowing to self, to access terminal this video flowing be provided as video.The 4th terminal can be play and distribute the video flowing regaining.
In the present embodiment, the 4th terminal can obtain the current video stream timestamp in third terminal, and compare with the video flowing timestamp in self, in the time determining that video flowing in self is longer with respect to the video flowing time of delay in third terminal, again ask third terminal to distribute video to access terminal, thereby can, from the video of redistributing accesses terminal, obtain with respect to video flowing shorter video flowing time of delay in third terminal, improve the quality of video conference.
Adding in request for conference that described the second terminal sends can also be carried request standard information, described request standard information comprises the parameter request information that described the second terminal accesses terminal to video,, preferably, described third terminal 111 is according to the set information of each described first terminal, from described first terminal, select video for described the second terminal and access terminal, specifically comprise:
Determine the request standard information of described the second terminal, and according to the set information of self and described request standard information, determine whether self can provide video flowing for described the second terminal:
If determine and self can, for described the second terminal provides video flowing,, self be accessed terminal as the video of described the second terminal;
If determine and self can not think that described the second terminal provides video flowing,, determine the non-terminal number that arrives described third terminal process for initiating each the 4th terminal of video conference in first terminal, the 4th identical terminal of terminal number that arrives described third terminal process is divided into a group, according to the terminal number of the each group of described third terminal process of corresponding arrival order from less to more, carry out the following step for each group successively, until receive the designated parameter information that the 4th terminal sends:
Send the request standard information of described the second terminal to each the 4th terminal in this group;
Receive the feedback information of each the 4th terminal in this group, this feedback information is that the 4th terminal is according to the set information of self and described request standard information, determine and self can not think when described the second terminal provides video flowing, feedback cannot access information, or, determine when self can provide video flowing for described the second terminal the designated parameter information of feedback;
The designated parameter information sending according to each the 4th terminal receiving, determines that the 4th terminal that access capability is the highest accesses terminal as the video of described the second terminal.
Certainly, described third terminal is in the time receiving the request of synchronization video stream, from first terminal, selecting the concrete mode that accesses terminal of video for described the 4th terminal, can be understood as and receive while adding request for conference, is that the second terminal concrete mode of selecting video to access terminal is identical.
In the present embodiment, for the network delay that may exist, according to the otherness of terminal, a kind of node capacity assessment algorithm has been proposed, making can decision-making to go out the computing capability best node of video flow quality strong, that have accesses terminal as optimum video, Optimizing Network Resources distributes, and improves stability and the meeting quality of video conferencing system.
Concrete, the deployment architecture schematic diagram of wireless terminal video conferencing system can be as shown in Figure 2.The structure of whole wireless terminal video conferencing system belongs to the topological structure of typical P2P, adopts main flow P2P structure Zhong center directory structure in the present embodiment.Meeting initiating terminal (third terminal) is responsible for creating the associated metadata of the most original desktop video information, the address information of leaving peer node concentratedly and institute's save data of WiFi access point, collection distribution.This concentrated center directory structure, can, for the request of the second joining meeting to terminal, carry out fast finding and can return to most suitable one or more video to the second terminal accessing terminal third terminal to data.
In the time that second terminal will add video conference, it needs first to obtain video information of access terminal from third terminal, then accesses terminal and obtains video flowing from a video corresponding to video information of access terminal.After obtaining video flowing when accessing terminal from video, the role of this second terminal is converted to the 4th terminal that has added video conference, is the recipient of video flowing, is also the supplier of a potential video flowing.
Based on same inventive concept, provide following method with the embodiment of the present invention one.
Embodiment bis-,
The embodiment of the present invention two provides a kind of wireless terminal video meeting implementing method, from third terminal side, wireless terminal video meeting implementing method is described, and the steps flow chart of the method can as shown in Figure 3, comprise:
Step 101, third terminal are monitored and are added request for conference.
In this step, initiate the third terminal of video conference after opening self WiFi focus function, can monitor the request for conference that adds that the second terminal of the Wireless Fidelity WIFI focus that is connected to self correspondence sends.If listen to the request for conference that adds of the second terminal transmission, can continue to perform step 102.
Step 102, third terminal are that the second terminal selects video to access terminal.
In this step, third terminal can, according to the set information of each first terminal that has added video conference, be selected video for described the second terminal and access terminal from described first terminal.
Concrete, third terminal can be that the second terminal selects video to access terminal in the following manner:
Determine the request standard information of described the second terminal, described request standard information is carried at adding in request for conference of described the second terminal transmission, described request standard information comprises the parameter request information that described the second terminal accesses terminal to video, and according to the set information of self and described request standard information, determine whether self can provide video flowing for described the second terminal, wherein, described request standard information can be, but not limited to comprise: at least one in code check, bandwidth criteria:
If determine and self can, for described the second terminal provides video flowing,, self be accessed terminal as the video of described the second terminal;
If determine and self can not think that described the second terminal provides video flowing,, determine the non-terminal number that arrives the third terminal process of initiating video conference for initiating each the 4th terminal of video conference in first terminal, the 4th identical terminal of terminal number that arrives described third terminal process is divided into a group, according to the terminal number of the each group of described third terminal process of corresponding arrival order from less to more, carry out the following step for each group successively, until receive the designated parameter information that the 4th terminal sends:
Send the request standard information of described the second terminal to each the 4th terminal in this group;
Receive the feedback information of each the 4th terminal in this group, this feedback information is that the 4th terminal is according to the set information of self and described request standard information, determine and self can not think when described the second terminal provides video flowing, feedback cannot access information, or, determine when self can provide video flowing for described the second terminal the designated parameter information of feedback;
The designated parameter information sending according to each the 4th terminal receiving, determines that the 4th terminal that access capability is the highest accesses terminal as the video of described the second terminal.
It should be noted that, if the first terminal quantity that the access capability that third terminal is determined is the highest is multiple, can the first terminal the highest from the access capability of determining, select one arbitrarily, or select a first terminal to access terminal as the video of described the second terminal according to certain algorithm.Certainly, third terminal can also all send to the second terminal by the information of first terminal the highest multiple access capabilities of determining, therefrom selects a first terminal to obtain video flowing by the second terminal.
Concrete, in third terminal, can safeguard participant's list, this list is for preserving each end message that has added video conference.End message can be, but not limited to comprise: at least one in central processing unit (CPU) relevant information, internal memory relevant information, the child node relevant information of a terminal and the code check using.
And can be understood as, in this list, preserve each terminal quantity that has added the terminal of video conference to arrive third terminal process, thereby can, according to this list, determine the request standard information that at every turn need to send to which terminal the second terminal.
Step 103, third terminal send video information of access terminal.
In this step, third terminal can be by being that the information that video that the second terminal is selected accesses terminal sends to the second terminal, so that the second terminal accesses terminal and obtains video flowing from this video.
The information that sends to the video of the second terminal to access terminal can be, but not limited to comprise: Internet Protocol (IP) address that this video accesses terminal, at least one in port and the code check that uses.
Before step 101, can also comprise step 101 ':
Step 101 ', third terminal obtain video flowing.
In the present embodiment, third terminal can be according to setting speed, preferably, this setting speed was not less than for 30 frame/seconds, gathered the image of self screen display, formed continuous video flowing, and this video is saved to self distribution buffer queue, to access terminal this video flowing be provided as video.Thereby obtain the original video stream of distributing in video conference.
Further, in the present embodiment, for the uncertainty of network condition, in order to reduce the delay of video streaming, ensure the stability of video conference, third terminal can receive the non-synchronization video stream request sending for initiating the 4th terminal of video conference in first terminal; According to the set information of each described first terminal, from first terminal, selecting video for described the 4th terminal accesses terminal, the information that this video is accessed terminal sends to described the 4th terminal, the information that sends to the video of the 4th terminal to access terminal can be, but not limited to comprise: Internet Protocol (IP) address that this video accesses terminal, at least one in port and the code check that uses, indicates the 4th terminal to access terminal and obtain video flowing from this video.Thereby ensure that the 4th terminal, in the time that video flowing delay is larger, regains the less video flowing of delay, further ensure the quality of video conference.
Be that the process that the second terminal selects video to access terminal is elaborated below by a concrete example to the third terminal relating in the embodiment of the present invention two.
Embodiment tri-,
For be simply, rapidly second terminal select video access terminal, although consider that network condition has time-varying characteristics, delay does not in the same time change to some extent, but the basic degree of depth (terminal quantity of arrival third terminal process) that arrives third terminal (original video stream is provided) with this first terminal of the delay of the video flowing that first terminal receives is directly proportional, the terminal quantity that arrives third terminal process is fewer, the time of delay of video flowing is shorter, therefore the mode that, the present embodiment employing calls for bid is step by step that the second Terminal-decision video accesses terminal.For convenience of explanation, utilize table 1 that the hereinafter implication of each symbol is described, the follow-up each symbol relating to can be joined the implication of this symbol being shown in Table 1.In the present embodiment, the each terminal in video conferencing system can be called a node, and one provides the terminal of video flowing can be called father node, and the node that receives the video flowing that this terminal provides can be called the child node of this node.
Symbol Symbol implication
Holder Third terminal
Applicant The second terminal
Participant The 4th terminal
Parties_List Participant's list
Candidator Holder is that the video that Applicant picks out accesses terminal
Peer_n N node in video conferencing system
Pn_Available_CPU The current available cpu resource of Peer_n node
Pn_Available_Memory The current available memory source of Peer_n node
Pn_Available_BandWidth The current available bandwidth resources of Peer_n node
Pn_Child_Num Current the be with son node number of Peer_n node
Pn_Height Peer_n node arrives the degree of depth of third terminal
Pn_Holder_Delay The delay of video flowing from Holder to Pn
Pn_Cappacity The integration capability assessed value of Peer_n
Pn_CPU_Cappacity The CPU total capacity value of Peer_n
Pn_Max_Memory The memory source numerical value that Peer_n has
Pn_Max_Bandwidth The bandwidth total capacity value of Peer_n
Max_Child_Num Maximum son node number
Min_Cappacity The ability value lower limit of node
Table 1
When receiving Applicant, Holder carries adding after request for conference of request standard information, if Holder is according to the set information of self and described request standard information, determine that self can provide video flowing for this Applicant, the Candidator using self as this Applicant, sends to Applicant by the information of self.
If Holder is according to the set information of self and described request standard information, determine and self can not think that this Applicant provides video flowing, can be according to Parties_List, first the request standard information of Applicant is sent to (for example, comprising code check and bandwidth criteria) to the node (with the direct-connected Participant of Holder) of Pn_Height=1.
The node of each Pn_Height=1, according to the set information of self and described request standard information, is assessed self and whether can be provided video flowing (whether having the ability to accept this Applicant as child node) for this Applicant:
Have the ability to accept this Applicant as child node if evaluated, can feed back designated parameter information to Holder, inform that Holder self can accept this Applicant as child node, if the ability of evaluating is not accepted this Applicant as child node, can feed back to Holder cannot access information.
If when Holder receives the designated parameter information of multiple node feedbacks, using the node of picking out condition optimum from these nodes as last Candidator, this nodal information is sent to Applicant.
In the time not having node to have the ability to accept this Applicant as child node in the node of Holder discovery Pn_Height=1, Holder sends all nodes to Pn_Height=2 (Participant being connected with Holder through a Participant) the request standard information of this Applicant, and whether the node of inquiry Pn_Height=2 has the ability to accept this Applicant as child node.By that analogy, until find suitable Candidator.
How illustrate Peer_n below according to the set information of self and described request standard information, determine whether self can provide video flowing for Applicant.
In the present embodiment, can represent with Pn_Cappacity the integration capability assessed value of Peer_n, it is decided by CPU disposal ability, internal memory situation, loading level and the network bandwidth of Peer_n.In the present embodiment, the integration capability assessed value that Peer_n can be based on self, determine whether self can provide video flowing for Applicant:
The first step, can be according to the request standard information of Applicant, if determine when Peer_n provides video flowing for this Applicant Pn_Available_CPU, Pn_Available_Memory, Pn_Available_BandWidth and the Pn_Child_Num of Peer_n.
Second step, if can determine when Peer_n provides video flowing for described Applicant the Pn_Cappacity of Peer_n.
Concrete, Pn_Cappacity can determine by following formula:
Pn_Cappacity=a*(Pn_Available_Bandwidth/Pn_Max_Bandwidth)+
b*(Pn_Avilable_CPU/Pn_CPU_Cappacity)+
c*(Pn_Avilable_Memory/Pn_Max_Memory)+
d*(Max_Child_Num-Pn_Child_Num)
Wherein, a, b, c, d are arithmetic number, Pn_Available_CPU, Pn_Available_Memory, Pn_Available_BandWidth and Pn_Child_Num are the relevant parameter value that the first step obtains, and Pn_CPU_Cappacity, Pn_Max_Memory, Pn_Max_Bandwidth and Max_Child_Num are the fixed value that Peer_n is corresponding.
The 3rd step, determine whether Pn_Cappacity is less than Min_Cappacity.
In this step, if can determine, whether Pn_Cappacity when Peer_n provides video flowing for described Applicant is less than Min_Cappacity, thereby whether Peer_n can exceed the limit of power of Peer_n for described Applicant provides video flowing if judge.
If determine, Pn_Cappacity is less than Min_Cappacity, determine that Peer_n can not think that described Applicant provides video flowing, can continue to carry out the 4th step, otherwise, determine that Peer_n can provide video flowing for described Applicant, can redirect carry out the 5th step.
The 4th step, cannot access information to Holder feedback.
If determine, Pn_Cappacity when Peer_n provides video flowing for described Applicant is less than Min_Cappacity, can cannot access information to Holder feedback, notice Holder self cannot provide video flowing for described Applicant, and can process ends.
The 5th step, to Holder feedback designated parameter information.
If determine, Pn_Cappacity when Peer_n provides video flowing for described Applicant is not less than Min_Cappacity, can feed back designated parameter information to Holder, and notice Holder self can provide video flowing for described Applicant.
Described designated parameter information can provide with the form of tlv triple, and this tlv triple can be expressed as follows:
Pn_Candidator_Info=(Pn_Cappacity,Pn_Holder_Delay,Pn_Child_Num)
; Peer_n can determine the first step; if when Peer_n provides video flowing for described Applicant; the Pn_Child_Num of Peer_n; second step is determined, if when Peer_n provides video flowing for described Applicant, and the Pn_Cappacity of Peer_n; and the Pn_Holder_Delay of Peer_n feeds back to Holder, so that the video of Holder decision-making optimum accesses terminal.
If Peer_n feeds back designated parameter information with the form of above-mentioned tlv triple to Holder, Holder can determine the access capability Rank (Pn) of the Peer_n of each feedback designated parameter information in the following manner, can be understood as, Rank (Pn) is larger, the access capability of Peer_n is higher, accesses terminal thereby select the highest video of access capability for described the second terminal:
Rank(Pn)=m*Pn_Cappacity+n*Pn_Holder_Delay+k*Pn_Child_Num
Wherein, the value of m, n, k determined arranging of video flowing by Holder, and m, n, k are all greater than 0 and are less than 1.
Embodiment tetra-,
The embodiment of the present invention four provides a kind of wireless terminal video meeting implementing method, from the second end side, wireless terminal video meeting implementing method is described, and the steps flow chart of the method can as shown in Figure 4, comprise:
Step 201, the second terminal connect WIFI focus corresponding to third terminal.
In this step, the second terminal can be searched for WIFI focus, and connects the WIFI focus corresponding to third terminal of initiating video conference.
Step 202, the second terminal send and add request for conference to described third terminal.
After the network that WIFI focus corresponding to the second terminal access third terminal emerges, can send and add request for conference to described third terminal, request adds video conference.
Step 203, the second terminal receiver, video information of access terminal.
Third terminal, receiving adding after request for conference that the second terminal sends, can go out video and access terminal for this second Terminal-decision, and the information that this video is accessed terminal sends to this second terminal.
In this step, the second terminal can receiver, video information of access terminal.
Step 204, the second terminal are obtained video flowing.
The second terminal receives after video information of access terminal, can access terminal and obtain video flowing from video corresponding to described video information of access terminal.
Concrete, in this step, the second terminal can access terminal to send to video corresponding to described video information of access terminal and obtain video flowing request, and receives this video video flowing sending that accesses terminal.
Step 205, the second terminal are preserved video flowing.
After accessing terminal from corresponding video in the second terminal and obtaining video flowing, can preserve this video flowing.Concrete, the second terminal can be preserved the broadcasting buffer queue of this video flowing to self, to play this video flowing, and preserves the distribution buffer queue of this video flowing to self, to access terminal this video flowing is provided as video.
The second terminal is after obtaining video flowing, and its role is converted to the 4th terminal, and can timing send to third terminal the video flowing synchronized timestamp request of obtaining.The 4th terminal changing into taking the second above-mentioned terminal below sends and obtains the request of video flowing synchronized timestamp and describe as example to third terminal.The execution of step 205 and step 206 can be in no particular order.
Step 206, send and obtain the request of video flowing synchronized timestamp to third terminal.
In this step, the 4th terminal can timing send to described third terminal the video flowing synchronized timestamp request of obtaining.
Step 207, reception the second video flowing timestamp.
In this step, the 4th terminal can receive third terminal according to obtaining the request of video flowing synchronized timestamp, the video flowing timestamp of feedback.This video flowing timestamp is third terminal current video stream timestamp.
Step 208, determine time of delay.
In this step, the 4th terminal can be determined the time of delay between the first video flowing timestamp and described the second video flowing timestamp, the local video stream timestamp that described the first video flowing timestamp is described the 4th terminal.In the time that be greater than set point the time of delay of determining, can continue to perform step 209, otherwise, can return to execution step 206.
Step 209, send the request of synchronization video stream to described third terminal.
The 4th terminal sends after the request of synchronization video stream to described third terminal, third terminal can access terminal for the 4th Terminal-decision video (decision-making technique can reference example three) again, and the information that the video that decision-making is gone out accesses terminal sends to the 4th terminal.
The information that step 210, receiver, video access terminal.
In this step, the 4th terminal can receive the information that accesses terminal of video that third terminal sends, and continues execution step 211.
Step 211, obtain video flowing.
In this step, video corresponding to information that the 4th terminal accesses terminal from video accesses terminal and again obtains video flowing.Concrete, video corresponding to information that the 4th terminal can access terminal to the video receiving accesses terminal to send and obtains video flowing request, and receives this video video flowing sending that accesses terminal.
Step 212, preservation video flowing.
Described the 4th terminal is after video accesses terminal and obtains video flowing, can preserve the broadcasting buffer queue of this video flowing to self, to play this video flowing, and preserve the distribution buffer queue of this video flowing to self, to access terminal this video flowing is provided as video.The 4th terminal can be play and distribute the video flowing regaining.
Below by a concrete example, the scheme of the embodiment of the present invention two, three, four is described.
Embodiment five,
The embodiment of the present invention five provides a kind of wireless terminal video meeting implementing method, and the table 1 in three describes in conjunction with the embodiments, and the steps flow chart of the method can as shown in Figure 5, comprise:
Step 301, Holder open self WIFI focus function, initialization Parties_List.
Can be understood as, the Parties_List after initialization is empty.
Step 302, Holder start desktop video collection, open message listening port.
In this step, Holder can gather original video stream, and initiation message monitors, so that the network that the second terminal adds the WiFi focus of self correspondence to emerge.
Step 303, Holder open video flowing listening port, wait for meeting application.
In this step, Holder can add the monitoring of request for conference (Request_Join).
Step 304, Applicant search WIFI focus, access network.
In this step, Applicant can search for WIFI focus, and accesses the network that WiFi focus that Holder is corresponding emerges.
Step 305, Applicant send and add request for conference to Holder.
Step 306, Holder select the Candidator of most suitable node as described Applicant from Parties_List.
Now, in Parties_List, multiple end messages that added video conference may have been preserved.
The information of Candidator is sent to Applicant by step 307, Holder.
Concrete, the information that Holder can carry Candidator in access point response message (Response_JoinPoint), sends to Applicant.
Step 308, Applicant send to Candidator the video flowing request (Request_Play) of obtaining, and request is set up RTP (Real-time Transport Protocol, RTP) and connected, and carry out receiver, video stream.
Step 309, RTP connect foundation, and Applicant starts receiver, video and flows and play, and the role of Applicant becomes Participant.
Step 310, Participant timing send to Holder the video flowing synchronized timestamp request (Request_Sync) of obtaining, to obtain the timestamp of current video stream.
In the present embodiment, send Request_Sync describe as example taking the Participant that converted to by described Applicant, other Participant in video conferencing system send Request_Sync and are not limited to after step 309.
Step 311, Holder return to current video stream timestamp, i.e. source video flowing timestamp to Participant.
After step 312, Participant calculate the source video flowing timestamp obtaining and the local video stream timestamp of oneself, obtain time of delay (Pn_Holder_Delay), if Pn_Holder_Delay>Media_Max_Delay, continues execution step 313.
Step 313, Participant send synchronization video stream request (Request_Sync) to Holder, for obtaining the video information of access terminal of re-synchronization.
New Candidator information is returned to Participant by step 314, Holder.
Step 315, Participant send and obtain video flowing request (Request_Play), acquisition request video flowing to new Candidator.
Step 316, Participant obtain video flowing again, start to play the video flowing of synchronizeing with source video flowing.
Based on same inventive concept, provide following device with the embodiment of the present invention one~five.
Embodiment six,
The embodiment of the present invention six provides a kind of wireless terminal video conference implement device, and this device can be integrated in terminal, and the terminal that is integrated with this device can be used as third terminal, and the structural representation of this device can as shown in Figure 6, comprise:
Message sink module 11 is for monitoring the request for conference that adds that the second terminal of the Wireless Fidelity WIFI focus that is connected to self correspondence sends; Message processing module 12 for described message sink module listen to described second terminal send add request for conference time, according to the set information of each first terminal, described first terminal is the terminal that has added video conference, selects video access terminal from described first terminal for described the second terminal; The information that message transmission module 13 accesses terminal for the video that described message processing module is selected sends to described the second terminal.
Described device also comprises:
Desktop video acquisition module 14, for the image according to setting speed collection self screen display, forms continuous video flowing, and this video is saved to distribution buffer queue, and described distribution buffer queue is used to other-end that this video flowing is provided.
The synchronization video stream request that described message sink module 11 also sends for receiving the 4th terminal, described the 4th terminal is non-for initiating the terminal of video conference in described first terminal;
When described message processing module 12 also receives the request of synchronization video stream for described message sink module, according to the set information of each described first terminal, from first terminal, select video for described the 4th terminal and access terminal;
The information that described message transmission module 13 also accesses terminal for the video that described message processing module is selected sends to described the 4th terminal, indicates the 4th terminal to access terminal and obtain video flowing from this video.
What described message sink module received add in request for conference carries request standard information, and described request standard information comprises the parameter request information that described the second terminal accesses terminal to video; , preferably, described message processing module 12, for according to the set information of each first terminal that has added video conference, is selected video for described the second terminal and is accessed terminal from described first terminal, specifically comprises:
Determine the request standard information of described the second terminal, and according to the set information of described device and described request standard information, determine whether described device can provide video flowing for described the second terminal:
If determine, described device can provide video flowing for described the second terminal,, described device is accessed terminal as the video of described the second terminal;
Can not think that described the second terminal provides video flowing if determine described device,, determine that each the 4th terminal arrives the terminal number of third terminal process, described third terminal is for initiating the terminal of video conference in described first terminal, the 4th identical terminal of terminal number that arrives described third terminal process is divided into a group, according to the terminal number of the each group of described third terminal process of corresponding arrival order from less to more, carry out the following step for each group successively, until receive the designated parameter information that the 4th terminal sends:
Send the request standard information of described the second terminal to each the 4th terminal in this group;
Receive the feedback information of each the 4th terminal in this group, this feedback information is that the 4th terminal is according to the set information of self and described request standard information, determine and self can not think when described the second terminal provides video flowing, feedback cannot access information, or, determine when self can provide video flowing for described the second terminal the designated parameter information of feedback;
The designated parameter information sending according to each the 4th terminal receiving, determines that the 4th terminal that access capability is the highest accesses terminal as the video of described the second terminal.
Embodiment seven,
The embodiment of the present invention seven provides a kind of wireless terminal video conference implement device, this device can be integrated in terminal, the terminal that is integrated with this device can be used as the second terminal, the structural representation of this device can be as shown in Figure 7, comprise message transmission module 21, message sink module 22, message processing module 23 and video receiving module 24, wherein:
Message transmission module 21, for searching for Wireless Fidelity WIFI focus, connects the WIFI focus corresponding to third terminal of initiating video conference, and sends and add request for conference to described third terminal; Message sink module 22 for receive described third terminal according to described in add request for conference, the video information of access terminal of transmission; Message processing module 23 for the described third terminal determining described message sink module and receive according to described in add request for conference, when the video information of access terminal of transmission, trigger video receiving module; Video receiving module 24 is for according to the triggering of described message processing module, the described third terminal receiving from described message sink module according to described in add request for conference, the video corresponding to video information of access terminal of transmission accesses terminal and obtains video flowing.
Described video receiving module 24 specifically for access terminal to video corresponding to described video information of access terminal send obtain video flowing request, and receive this video access terminal send video flowing.
After described video receiving module 24 is also obtained video flowing for accessing terminal from video corresponding to described video information of access terminal, preserve this video flowing to playing buffer queue, described broadcasting buffer queue is used for playing this video flowing, and preserve this video flowing to distributing buffer queue, described distribution buffer queue is used to other-end that this video flowing is provided.
Described message transmission module 24 also for described video receiving module after video corresponding to described video information of access terminal accesses terminal and obtains video flowing, timing sends to described third terminal the video flowing synchronized timestamp request of obtaining;
Described message sink module 22 is also for receiving the second video flowing timestamp, and described the second video flowing timestamp is that described third terminal is according to the video flowing timestamp of described video flowing synchronized timestamp request feedback;
When described message processing module 23 also receives the second video flowing timestamp for described message sink module, determine the time of delay between the first video flowing timestamp and described the second video flowing timestamp, described the first video flowing timestamp is local video stream timestamp;
When described message transmission module 21 is also greater than set point for the time of delay of determining at described message processing module, send the request of synchronization video stream to described third terminal;
Described message sink module 22 is also for receiving third terminal according to the request of described synchronization video stream, the information that the video of transmission accesses terminal;
Described message processing module 23 is also for determining that described message sink module receives third terminal according to the request of described synchronization video stream, when information that the video of transmission accesses terminal, triggers video reception module;
Described video reception module 24 is also for according to the triggering of described message processing module, the third terminal receiving to described message sink module is according to the request of described synchronization video stream, video corresponding to information that access terminal of video sending accesses terminal to send and obtains video flowing request, receives this video video flowing sending that accesses terminal.
Described video reception module 24 is also asked according to described synchronization video stream for the third terminal receiving to described message sink module, video corresponding to information that the video sending accesses terminal accesses terminal and sends the video flowing request of obtaining, receive this video access terminal send video flowing after, preserve this video flowing to playing buffer queue, described broadcasting buffer queue is used for playing this video flowing, and preserve this video flowing to distributing buffer queue, described distribution buffer queue is used to other-end that this video flowing is provided.
Certainly, the device that the embodiment of the present invention six and embodiment seven provide can also be integrated in same terminal, and a terminal can be used as third terminal use, also can be used as the second terminal and uses.Describe below by embodiment eight.
Embodiment eight,
As shown in Figure 8, the functional schematic of the terminal providing for the embodiment of the present invention eight, is integrated with the device that device that the embodiment of the present invention six provides and the embodiment of the present invention seven provide in this terminal.And can suppose that message processing module 31 in Fig. 8 is integrated with the function of the message processing module of the device that message processing module in the device that the embodiment of the present invention six provides and the embodiment of the present invention seven provide, message transmission module 32 is integrated with the function of the message transmission module of the device that message transmission module in the device that the embodiment of the present invention six provides and the embodiment of the present invention seven provide, and message sink module 33 is integrated with the function of the message sink module of the device that message sink module in the device that the embodiment of the present invention six provides and the embodiment of the present invention seven provide.Video receiving module 34 can be understood as the video receiving module of the device that the embodiment of the present invention seven provides, and desktop video acquisition module 35 can be understood as the desktop video acquisition module of the device that the embodiment of the present invention six provides.
As shown in Figure 8, in described terminal, can also comprise participant's list 36, play buffer queue 37 and distribution buffer queue 38.
Message processing module 31 can be selected video for terminal according to participant's list 36 and access terminal, and message processing module 31 can upgrade participant's list 36.
Video receiving module 34 can be kept at the video flowing obtaining respectively plays buffer queue 37 and distribution buffer queue 38.Certainly, distribution buffer queue 38 can also be preserved the video flowing that desktop video acquisition module 35 obtains.Video receiving module 34 can also be distributed the video flowing of preserving in distribution buffer queue 38.
In described terminal, can also comprise video playback module 39, for playing the broadcasting of buffer queue 37 videos.
In described terminal, can also comprise coding and decoding video module 30, desktop video acquisition module 35 and video playback module 39 can utilize coding and decoding video module 30 to carry out encoding and decoding to video flowing.
Described terminal physical layer is realized the communication between wireless terminal by WiFi, network layer is used transmission control protocol (Tranmission Control Protocol, TCP) and User Datagram Protocol (User DatagramProtocol, UDP) complete the transmission that comprises control message and video flowing.Video receiving module 34 can connect to come receiver, video stream by RTP.
The scheme that the embodiment of the present invention one~eight provides, based on current popular WIFI hot spot technology, make wireless terminal user in the situation that not having outside Wide Area Network (Internet, GPRS) to support, still can carry out normal video conference, and adopt P2P topological structure to go to organize the video distribution of video conference, break away from the constraint of center streaming media server, disperse flow and the computational load in video conferencing system, make wireless terminal user in the situation that external web environment is not good, also can carry out video conference, there is good versatility.
Simultaneously in order to reduce the delay of the video flowing in video conference process, a kind of algorithm to wireless terminal node capability evaluation has been proposed, solve as newly to add the terminal of video conference how to find the problem that optimal video accesses terminal, optimize Internet resources proportioning, improved quality and the topological stability of video conference.
In addition, for the time-varying characteristics of network condition, proposition can be passed through the video flowing judgement of time of delay, and whether need the video that upgrade the terminal that added video conference access terminal, further ensure the quality of video conference if carrying out decision-making.
Those skilled in the art should understand, the application's embodiment can be provided as method, system or computer program.Therefore, the application can adopt complete hardware implementation example, completely implement software example or the form in conjunction with the embodiment of software and hardware aspect.And the application can adopt the form at one or more upper computer programs of implementing of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) that wherein include computer usable program code.
The application is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present application, equipment (system) and computer program.Should understand can be by the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction that makes to carry out by the processor of computer or other programmable data processing device produces the device for realizing the function of specifying at flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of specifying in flow process of flow chart or multiple flow process and/or square frame of block diagram or multiple square frame on computer or other programmable devices.
Although described the application's preferred embodiment, once those skilled in the art obtain the basic creative concept of cicada, can make other change and amendment to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the amendment of the application's scope.
Obviously, those skilled in the art can carry out various changes and modification and the spirit and scope that do not depart from the application to the application.Like this, if these amendments of the application and within modification belongs to the scope of the application's claim and equivalent technologies thereof, the application is also intended to comprise these changes and modification interior.

Claims (23)

1. a wireless terminal video meeting implementing method, is characterized in that, described method comprises:
Monitoring is connected to the request for conference that adds that the second terminal of the Wireless Fidelity WIFI focus of self correspondence sends;
Listen to described second terminal send add request for conference time, according to the set information of each first terminal, described first terminal is the terminal that has added video conference, from described first terminal, select video for described the second terminal and access terminal, the information that this video is accessed terminal sends to described the second terminal.
2. the method for claim 1, is characterized in that, monitor that the second terminal of the WIFI focus that is connected to self correspondence sends add request for conference before, described method also comprises:
According to the image of setting speed collection self screen display, form continuous video flowing, and this video is saved to the distribution buffer queue of self, described distribution buffer queue is used to other-end that this video flowing is provided.
3. the method for claim 1, is characterized in that, described method also comprises:
Receive the synchronization video stream request that the 4th terminal sends, described the 4th terminal is non-for initiating the terminal of video conference in described first terminal;
According to the set information of each described first terminal, from first terminal, to select video for described the 4th terminal and access terminal, the information that this video is accessed terminal sends to described the 4th terminal, indicates the 4th terminal to access terminal and obtain video flowing from this video.
4. the method as described in as arbitrary in claim 1~3, it is characterized in that, request standard information is carried in adding that described the second terminal sends in request for conference, described request standard information comprises the parameter request information that described the second terminal accesses terminal to video,, according to the set information of each first terminal, from described first terminal, select video for described the second terminal and access terminal, specifically comprise:
Determine the request standard information of described the second terminal, and according to the set information of self and described request standard information, determine whether self can provide video flowing for described the second terminal:
If determine and self can, for described the second terminal provides video flowing,, self be accessed terminal as the video of described the second terminal;
If determine and self can not think that described the second terminal provides video flowing,, determine that each the 4th terminal arrives the terminal number of third terminal process, described third terminal is for initiating the terminal of video conference in described first terminal, the 4th identical terminal of terminal number that arrives described third terminal process is divided into a group, according to the terminal number of the each group of described third terminal process of corresponding arrival order from less to more, carry out the following step for each group successively, until receive the designated parameter information that the 4th terminal sends:
Send the request standard information of described the second terminal to each the 4th terminal in this group;
Receive the feedback information of each the 4th terminal in this group, this feedback information is that the 4th terminal is according to the set information of self and described request standard information, determine and self can not think when described the second terminal provides video flowing, feedback cannot access information, or, determine when self can provide video flowing for described the second terminal the designated parameter information of feedback;
The designated parameter information sending according to each the 4th terminal receiving, determines that the 4th terminal that access capability is the highest accesses terminal as the video of described the second terminal.
5. method as claimed in claim 4, is characterized in that, first terminal or the 4th terminal determine self whether can provide video flowing for described the second terminal in the following manner:
If first terminal or the 4th terminal are determined in the time providing video flowing as described the second terminal, the integration capability assessed value of self;
Be not less than in described integration capability assessed value under self ability value in limited time, determining self can be for described the second terminal provides video flowing, otherwise, determine and self can not think that described the second terminal provides video flowing;
And integration capability assessed value Pn_Cappacity determines by following formula:
Pn_Cappacity=a*(Pn_Available_Bandwidth/Pn_Max_Bandwidth)+
b*(Pn_Avilable_CPU/Pn_CPU_Cappacity)+
c*(Pn_Avilable_Memory/Pn_Max_Memory)+
d*(Max_Child_Num-Pn_Child_Num)
Wherein, a, b, c, d are arithmetic number;
If when Pn_Available_BandWidth represents that described first terminal or the 4th terminal provide video flowing for described the second terminal, current available bandwidth resources;
If when Pn_Available_CPU represents that described first terminal or the 4th terminal provide video flowing for described the second terminal, current available central processor CPU resource;
If when Pn_Available_Memory represents that described first terminal or the 4th terminal provide video flowing for described the second terminal, current available memory source;
If when Pn_Child_Num represents that described first terminal or the 4th terminal provide video flowing for described the second terminal, current be with son node number;
Pn_Max_Bandwidth represents the bandwidth total capacity value of described first terminal or the 4th terminal;
Pn_CPU_Cappacity represents the CPU total capacity value of described first terminal or the 4th terminal;
Pn_Max_Memory represents the memory source numerical value that described first terminal or the 4th terminal have;
Max_Child_Num represents the maximum son node number of described first terminal or the 4th terminal.
6. a wireless terminal video conference implement device, is characterized in that, described device comprises:
Message sink module, for monitoring the request for conference that adds that the second terminal of the Wireless Fidelity WIFI focus that is connected to self correspondence sends;
Message processing module, for described message sink module listen to described second terminal send add request for conference time, according to the set information of each first terminal, described first terminal is the terminal that has added video conference, selects video access terminal from described first terminal for described the second terminal;
Message transmission module, the information accessing terminal for the video that described message processing module is selected sends to described the second terminal.
7. device as claimed in claim 6, is characterized in that, described device also comprises:
Desktop video acquisition module, for the image according to setting speed collection self screen display, forms continuous video flowing, and this video is saved to distribution buffer queue, and described distribution buffer queue is used to other-end that this video flowing is provided.
8. device as claimed in claim 6, is characterized in that, described message sink module, and the synchronization video stream request also sending for receiving the 4th terminal, described the 4th terminal is non-for initiating the terminal of video conference in described first terminal;
Described message processing module while also receiving the request of synchronization video stream for described message sink module, according to the set information of each described first terminal, is selected video for described the 4th terminal and is accessed terminal from first terminal;
Described message transmission module, the information also accessing terminal for the video that described message processing module is selected sends to described the 4th terminal, indicates the 4th terminal to access terminal and obtain video flowing from this video.
9. the device as described in as arbitrary in claim 6~8, is characterized in that, what described message sink module received add in request for conference carries request standard information, and described request standard information comprises the parameter request information that described the second terminal accesses terminal to video;
Described message processing module for according to the set information of each first terminal, is selected video for described the second terminal and is accessed terminal from described first terminal, specifically comprises:
Determine the request standard information of described the second terminal, and according to the set information of described device and described request standard information, determine whether described device can provide video flowing for described the second terminal:
If determine, described device can provide video flowing for described the second terminal,, described device is accessed terminal as the video of described the second terminal;
Can not think that described the second terminal provides video flowing if determine described device,, determine that each the 4th terminal arrives the terminal number of third terminal process, described third terminal is for initiating the terminal of video conference in described first terminal, the 4th identical terminal of terminal number that arrives described third terminal process is divided into a group, according to the terminal number of the each group of described third terminal process of corresponding arrival order from less to more, carry out the following step for each group successively, until receive the designated parameter information that the 4th terminal sends:
Send the request standard information of described the second terminal to each the 4th terminal in this group;
Receive the feedback information of each the 4th terminal in this group, this feedback information is that the 4th terminal is according to the set information of self and described request standard information, determine and self can not think when described the second terminal provides video flowing, feedback cannot access information, or, determine when self can provide video flowing for described the second terminal the designated parameter information of feedback;
The designated parameter information sending according to each the 4th terminal receiving, determines that the 4th terminal that access capability is the highest accesses terminal as the video of described the second terminal.
10. a wireless terminal video meeting implementing method, is characterized in that, described method comprises:
Search Wireless Fidelity WIFI focus, and connect the WIFI focus corresponding to third terminal of initiating video conference;
Send and add request for conference to described third terminal;
Receive the video information of access terminal that described third terminal sends, access terminal and obtain video flowing from video corresponding to described video information of access terminal.
11. methods as claimed in claim 10, is characterized in that, after video corresponding to described video information of access terminal accesses terminal and obtain video flowing, described method also comprises:
Preserve the broadcasting buffer queue of this video flowing to self, described broadcasting buffer queue is used for playing this video flowing, and preserves the distribution buffer queue of this video flowing to self, and described distribution buffer queue is used to other-end that this video flowing is provided.
12. methods as claimed in claim 10, is characterized in that, after video corresponding to described video information of access terminal accesses terminal and obtain video flowing, described method also comprises:
Timing sends to described third terminal the video flowing synchronized timestamp request of obtaining, in the time receiving the second video flowing timestamp, determine the time of delay between the first video flowing timestamp and described the second video flowing timestamp, described the first video flowing timestamp is local video stream timestamp, described the second video flowing timestamp is that described third terminal is according to the video flowing timestamp of described video flowing synchronized timestamp request feedback, and in the time that be greater than set point this time of delay, send the request of synchronization video stream to described third terminal;
And receive third terminal send video access terminal information time, video corresponding to information accessing terminal to this video access terminal send obtain video flowing request, receive this video access terminal send video flowing.
13. methods as claimed in claim 12, it is characterized in that, send the request of synchronization video stream to described third terminal, and receive third terminal send video access terminal information time, video corresponding to information accessing terminal to this video accesses terminal and sends the video flowing request of obtaining, receive this video access terminal send video flowing after, described method also comprises:
Preserve the broadcasting buffer queue of this video flowing to self, described broadcasting buffer queue is used for playing this video flowing, and preserves the distribution buffer queue of this video flowing to self, and described distribution buffer queue is used to other-end that this video flowing is provided.
14. 1 kinds of wireless terminal video conference implement devices, is characterized in that, described device comprises message transmission module, message sink module, message processing module and video receiving module, wherein:
Message transmission module, for searching for Wireless Fidelity WIFI focus, connects the WIFI focus corresponding to third terminal of initiating video conference, and sends and add request for conference to described third terminal;
Message sink module, for receive described third terminal according to described in add request for conference, the video information of access terminal of transmission;
Message processing module, for determine described third terminal that described message sink module receives according to described in add request for conference, when the video information of access terminal of transmission, trigger video receiving module;
Video receiving module, for according to the triggering of described message processing module, the described third terminal receiving from described message sink module according to described in add request for conference, the video corresponding to video information of access terminal of transmission accesses terminal and obtains video flowing.
15. devices as claimed in claim 14, it is characterized in that, described video receiving module, after also obtaining video flowing for accessing terminal from video corresponding to described video information of access terminal, preserve this video flowing to playing buffer queue, described broadcasting buffer queue is used for playing this video flowing, and preserves this video flowing to distributing buffer queue, and described distribution buffer queue is used to other-end that this video flowing is provided.
16. devices as claimed in claim 14, it is characterized in that, described message transmission module, also for described video receiving module after video corresponding to described video information of access terminal accesses terminal and obtains video flowing, timing sends to described third terminal the video flowing synchronized timestamp request of obtaining;
Described message sink module, also for receiving the second video flowing timestamp, described the second video flowing timestamp is that described third terminal is according to the video flowing timestamp of described video flowing synchronized timestamp request feedback;
Described message processing module, while also receiving the second video flowing timestamp for described message sink module, determine the time of delay between the first video flowing timestamp and described the second video flowing timestamp, described the first video flowing timestamp is local video stream timestamp;
Described message transmission module, while being also greater than set point for the time of delay of determining at described message processing module, sends the request of synchronization video stream to described third terminal;
Described message sink module, also for receiving third terminal according to the request of described synchronization video stream, the information that the video of transmission accesses terminal;
Described message processing module, also for determining that described message sink module receives third terminal according to the request of described synchronization video stream, when information that the video of transmission accesses terminal, triggers video reception module;
Described video reception module, also for according to the triggering of described message processing module, the third terminal receiving to described message sink module is according to the request of described synchronization video stream, video corresponding to information that access terminal of video sending accesses terminal to send and obtains video flowing request, receives this video video flowing sending that accesses terminal.
17. devices as claimed in claim 16, it is characterized in that, described video reception module, also ask according to described synchronization video stream for the third terminal receiving to described message sink module, video corresponding to information that the video sending accesses terminal accesses terminal and sends the video flowing request of obtaining, receive this video access terminal send video flowing after, preserve this video flowing to playing buffer queue, described broadcasting buffer queue is used for playing this video flowing, and preserve this video flowing to distributing buffer queue, described distribution buffer queue is used to other-end that this video flowing is provided.
18. 1 kinds of wireless terminal video conferencing systems, is characterized in that, described system comprises the first terminal that adds video conference and second terminal of asking to add video conference, and described first terminal comprises the third terminal for initiating video conference, wherein:
Described third terminal, for monitoring the request for conference that adds that the second terminal of the WIFI focus that is connected to self correspondence sends; Listen to described second terminal send add request for conference time, according to the set information of each described first terminal, from described first terminal, select video for described the second terminal and access terminal, the information that this video is accessed terminal sends to described the second terminal;
Described the second terminal, for searching for WIFI focus, and connects the WIFI focus that described third terminal is corresponding; Send and add request for conference to described third terminal, receive the video information of access terminal that described third terminal sends, access terminal and obtain video flowing from video corresponding to described video information of access terminal.
19. systems as claimed in claim 18, it is characterized in that, described the second terminal, for accessing terminal and obtain video flowing from video corresponding to described video information of access terminal, specifically comprise: to video corresponding to described video information of access terminal access terminal send obtain video flowing request, and receive this video access terminal send video flowing.
20. systems as claimed in claim 18, is characterized in that,
Described third terminal, also, for the image according to setting speed collection self screen display, forms continuous video flowing, and this video is saved to the distribution buffer queue of self, and described distribution buffer queue is used to other-end that this video flowing is provided;
Described the second terminal, after also obtaining video flowing for accessing terminal from video, preserves the broadcasting buffer queue of this video flowing to self, and described broadcasting buffer queue is used for playing this video flowing, and preserves the distribution buffer queue of this video flowing to self.
21. systems as claimed in claim 18, is characterized in that, also comprise non-for initiating the 4th terminal of video conference in first terminal;
Described the 4th terminal, send to described third terminal the video flowing synchronized timestamp request of obtaining for timing, in the time receiving the second video flowing timestamp, determine the time of delay between the first video flowing timestamp and described the second video flowing timestamp, described the first video flowing timestamp is the video flowing timestamp in described the 4th terminal, described the second video flowing timestamp is that described third terminal is according to the video flowing timestamp of described video flowing synchronized timestamp request feedback, and in the time that be greater than set point this time of delay, send the request of synchronization video stream to described third terminal;
Described third terminal, also in the time receiving described synchronization video stream request, according to the set information of each described first terminal, from first terminal, to select video for described the 4th terminal and access terminal, the information that this video is accessed terminal sends to and sends described the 4th terminal;
Described the 4th terminal, also for video corresponding to information accessing terminal to the video receiving access terminal send obtain video flowing request, receive this video access terminal send video flowing.
22. systems as claimed in claim 21, it is characterized in that, described the 4th terminal, after also obtaining video flowing for accessing terminal from video, preserve the broadcasting buffer queue of this video flowing to self, described broadcasting buffer queue is used for playing this video flowing, and preserves the distribution buffer queue of this video flowing to self, and described distribution buffer queue is used to other-end that this video flowing is provided.
23. systems as described in as arbitrary in claim 18~22, is characterized in that,
Request standard information is carried in adding in request for conference that described the second terminal sends, and described request standard information comprises the parameter request information that described the second terminal accesses terminal to video;
, described third terminal according to the set information of each described first terminal, is selected video for described the second terminal and is accessed terminal from described first terminal, specifically comprises:
Determine the request standard information of described the second terminal, and according to the set information of self and described request standard information, determine whether self can provide video flowing for described the second terminal:
If determine and self can, for described the second terminal provides video flowing,, self be accessed terminal as the video of described the second terminal;
If determine and self can not think that described the second terminal provides video flowing,, determine the non-terminal number that arrives described third terminal process for initiating each the 4th terminal of video conference in first terminal, the 4th identical terminal of terminal number that arrives described third terminal process is divided into a group, according to the terminal number of the each group of described third terminal process of corresponding arrival order from less to more, carry out the following step for each group successively, until receive the designated parameter information that the 4th terminal sends:
Send the request standard information of described the second terminal to each the 4th terminal in this group;
Receive the feedback information of each the 4th terminal in this group, this feedback information is that the 4th terminal is according to the set information of self and described request standard information, determine and self can not think when described the second terminal provides video flowing, feedback cannot access information, or, determine when self can provide video flowing for described the second terminal the designated parameter information of feedback;
The designated parameter information sending according to each the 4th terminal receiving, determines that the 4th terminal that access capability is the highest accesses terminal as the video of described the second terminal.
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