CN101815098A - Point-to-point remote assistance method, system and terminal in IP multimedia subsystem - Google Patents
Point-to-point remote assistance method, system and terminal in IP multimedia subsystem Download PDFInfo
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- CN101815098A CN101815098A CN201010146259A CN201010146259A CN101815098A CN 101815098 A CN101815098 A CN 101815098A CN 201010146259 A CN201010146259 A CN 201010146259A CN 201010146259 A CN201010146259 A CN 201010146259A CN 101815098 A CN101815098 A CN 101815098A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
- H04L65/1066—Session management
- H04L65/1101—Session protocols
- H04L65/1104—Session initiation protocol [SIP]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/131—Protocols for games, networked simulations or virtual reality
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Abstract
The invention discloses point-to-point remote assistance method, system and terminal in an IP multimedia subsystem. The method comprises the following steps that an assistance requesting terminal and an assistance providing terminal exchange media resource information through an application server, and a media channel resource between the two terminals is reserved according to the media resource information; when the media channel resource between the assistance terminal and the assistance providing terminal is successfully reserved, a media channel is established according to the reserved media channel resource, and point-to-point remote assistance is carried out using the media channel. The system comprises at least two terminals and the application servers, wherein the terminals are assistance requesting terminal and assistance providing terminal respectively. The terminal comprises an exchange processing module, a channel establishing module and a remote assistance module. The invention has good interoperability and expansibility, and solves the problem of lack of interoperability and expansibility due to the adoption of a custom protocol in the traditional remote assistance.
Description
Technical field
The present invention relates to communication technical field, relate in particular to point-to-point remote assistance method, system and terminal in a kind of IP Multimedia System.
Background technology
In IMS (IP Multimedia Subsystem, IP Multimedia System) business, the remote assistance function offers the user as a hyperchromic function and uses; This function provides the mode of request remote assistance between the user, and this function can allow friend or computer elite help solve a computer difficult problem.Under the prerequisite of obtaining the authorization, the expert can check your screen, even can obtain the control of your computer.
At present, the remote assistance function of MSN mostly is to adopt custom protocol, lacks interoperability and standardization.
Summary of the invention
In view of above-mentioned analysis, the present invention aims to provide point-to-point remote assistance method, system and the terminal in a kind of IP Multimedia System, adopts the shortage versatility that custom protocol brings and the problem of standardization in the existing remote assistance in order to solve.
Purpose of the present invention mainly is achieved through the following technical solutions:
The invention provides the point-to-point remote assistance method in a kind of IP Multimedia System business, comprising:
Steps A: assistance requesting terminal and assistance provide terminal to pass through application server switched-media resource information and reserve media channel resource between the two according to described media resource information;
Step B: after described request assists terminal and described assistance that the media channel resource reservation success of terminal between the two is provided, set up media channel according to the media channel resource of reserving, and utilize described media channel to carry out point-to-point remote assistance.
Further, described steps A specifically comprises:
Steps A 1: described request assists terminal and described assistance to provide terminal to judge respectively whether oneself all possesses point-to-point remote assistance ability, execution in step A2 when confirming that the two all possesses point-to-point remote assistance ability;
Steps A 2: described request assists terminal and described assistance to provide terminal to use Session Initiation Protocol and SDP agreement by described application server switched-media resource information, and reserves media channel resource between the two according to described media resource information.
Further, described steps A 1 specifically comprises:
Described request assists terminal and described assistance to provide terminal to be registered to application server AS respectively;
Described request assists terminal and described assistance to provide terminal to judge from the address that application server receives register command according to oneself respectively, if receive the actual address of the address of register command for oneself, then think and oneself possess point-to-point remote assistance ability, and notify the other side, otherwise think oneself not possess point-to-point assistance ability by application server;
When confirming that own and distant terminal all possess point-to-point remote assistance ability, described request assists terminal and described assistance to provide terminal to use Session Initiation Protocol and SDP agreement by described application server switched-media resource information, and reserves media channel resource between the two according to described media resource information.
Further, described steps A 2 specifically comprises:
Described request assists terminal to use Session Initiation Protocol and SDP agreement to send by described application server to carry described request and assist the message of the media resource information of terminal to provide terminal to described assistance, and described assistance provides terminal to use Session Initiation Protocol and SDP agreement to return by described application server and carries described assistance and provide the message of the media resource information of terminal to assist terminal to described request;
Described request assists terminal and described assistance to provide terminal to reserve media channel resource between the two according to the media resource information that receives respectively.
Further, described step B specifically comprises:
Step B1: after described request assisted terminal and described assistance that the media channel resource reservation success of terminal between the two is provided, described request assisted terminal and described assistance to provide terminal to set up the TCP link as media channel according to the media channel resource of reserving;
Step B2: described assistance provides terminal to assist terminal that the desktop data of variation are provided by described media channel regular request described request.
Further, described step B2 specifically comprises:
Described assistance provides terminal regularly to send request and assists terminal to described request, and described request assists terminal to receive for the first time when described assistance provides the request of terminal, complete desktop data is offered described assistance terminal is provided; Described request assists terminal to receive when described assistance provides the request of terminal afterwards, the desktop area data that change in the scheduled time is offered described request assist terminal.
The present invention also provides the point-to-point remote assisting system in a kind of IP Multimedia System business, comprising: at least two terminals and application server, and described terminal is respectively assistance requesting terminal and assistance provides terminal, wherein,
Described request assists terminal and described assistance that terminal is provided, and is used for reserving media channel resource between the two by described application server switched-media resource information and according to described media resource information; After the success of the media channel resource reservation between the two, described request assists terminal and described assistance to provide terminal also to be used for, and sets up media channel according to the media channel resource of reserving, and utilizes described media channel to carry out point-to-point remote assistance.
Further, described terminal specifically comprises:
Described exchange processing module, be used to use Session Initiation Protocol and SDP agreement and distant terminal general application server switched-media resource information, and reserve described request according to described media resource information and assist terminal and described assistance that the media channel resource of terminal between the two is provided;
Described passage is set up module, is used for after media channel resource reservation success and distant terminal is set up media channel according to the media channel resource of reserving;
Described far module is used for the desktop data of variation being provided or the desktop data of variation regularly being provided to described distant terminal by the described distant terminal of described media channel regular request.
The present invention also provides a kind of terminal, provides terminal as assistance requesting terminal or assistance, comprising: exchange processing module, passage are set up module and remote assistance module, wherein,
Described exchange processing module, be used to use Session Initiation Protocol and SDP agreement and distant terminal general application server switched-media resource information, and reserve described request according to described media resource information and assist terminal and described assistance that the media channel resource of terminal between the two is provided;
Described passage is set up module, is used for after media channel resource reservation success and distant terminal is set up media channel according to the media channel resource of reserving;
Described far module is used for the desktop data of variation being provided or the desktop data of variation regularly being provided to described distant terminal by the described distant terminal of described media channel regular request.
Further, described exchange processing module specifically is used for, judge whether this terminal all possesses point-to-point remote assistance ability, when confirming that this terminal and distant terminal all possess point-to-point remote assistance ability, use Session Initiation Protocol and SDP agreement and distant terminal general application server switched-media resource information, and reserve described request according to described media resource information and assist terminal and described assistance that the media channel resource of terminal between the two is provided.
Beneficial effect of the present invention is as follows:
The present invention has overcome in the existing remote assistance and to have adopted the shortage versatility that custom protocol brings and the problem of standardization, has good interoperability and autgmentability.
Other features and advantages of the present invention will be set forth in the following description, and becoming apparent from specification of part perhaps understood by implementing the present invention.Purpose of the present invention and other advantages can realize and obtain by specifically noted structure in the specification of being write, claims and accompanying drawing.
Description of drawings
Fig. 1 is in the described method of the embodiment of the invention, sets up the signaling process figure of the media channel be used to carry out point-to-point remote assistance;
Fig. 2 is in the described method of the embodiment of the invention, the schematic flow sheet of point-to-point remote assistance;
Fig. 3 is the structural representation of the described system of the embodiment of the invention;
Fig. 4 is the structural representation of the described terminal of inventive embodiments.
Embodiment
Specifically describe the preferred embodiments of the present invention below in conjunction with accompanying drawing, wherein, accompanying drawing constitutes the application's part, and is used from explaination principle of the present invention with embodiments of the invention one.For clear and simplification purpose, when it may make theme of the present invention smudgy, with specifying in detail of known function and structure in the omission device described herein.
At first in conjunction with the accompanying drawings 1 and 2 pairs of described IP Multimedia System of the embodiment of the invention of accompanying drawing in point-to-point remote assistance method be elaborated.
In the described method of the embodiment of the invention, need at first to judge assistance requesting terminal and assistance provide terminal whether all to possess point-to-point remote assistance ability, judge that assistance requesting terminal and the process of assisting to provide terminal whether all to possess point-to-point remote assistance ability specifically can comprise:
Assistance requesting terminal and assistance provide terminal to be registered to AS (application server) respectively;
Assistance requesting terminal and assistance provide terminal to utilize Session Initiation Protocol by judging the ability whether own residing network environment possesses point-to-point remote assistance with the register flow path of application server AS.
Judgment rule is: terminal (assistance requesting terminal or assistance provide terminal) is learnt from the signaling that application server returns and oneself is received the actual address of the address of AS signaling if not oneself, then think and oneself be in NAT (The IP Network Address Translator, network address translation, referring to RFC1631) in the environment, then do not possess point-to-point remote assistance ability; If the actual address of oneself then thinks oneself to be in the big net environment to possess point-to-point remote assistance ability.
Need to prove, when known assistance requesting terminal and assistance provide terminal the two when all possessing point-to-point remote assistance ability, also can omit and judge assistance requesting terminal and assist to provide terminal whether all to possess the process of point-to-point remote assistance ability; Simultaneously those skilled in the art also can adopt additive method to judge assistance requesting terminal and assistance provide terminal whether all to possess point-to-point remote assistance ability, in the described method of the embodiment of the invention only for illustrating.
When confirm assistance requesting terminal and assistance provide terminal the two when all possessing point-to-point remote assistance ability, assistance requesting terminal and assistance provide terminal to pass through application server switched-media resource information and reserve media channel resource between the two according to described media resource information; After the success of the media channel resource reservation between the two, described request assists terminal and described assistance to provide terminal to set up media channel according to the media channel resource of reserving, and utilizes described media channel to carry out point-to-point remote assistance.
As shown in Figure 1, Fig. 1 is in the described method of the embodiment of the invention, foundation is used to carry out the signaling process figure of the media channel of point-to-point remote assistance, set in the embodiment of the invention and comprise two terminal: terminal A and terminal B, wherein terminal A is as assistance requesting terminal, terminal B provides terminal as assisting, and then described method mainly comprises the steps:
Step 101: terminal A sends invite message (invitation message) and arrives AS (application server), wherein invite message comprises the message body of the message header and the SDP form of SIP signaling format, the media resource information that contains this terminal A in the message body of invitation message, media resource information is IP address and port etc. for example, is used for the foundation of remote assistance media channel;
Step 102:AS transmits the invite message of self terminal A to terminal B, and terminal B begins to carry out the media channel resource reservation according to the media resource of the terminal A that receives;
Step 103～step 110, terminal A and terminal B pass through AS interactive media resource information, and reserve the media channel resource between the two; The signaling that relates to comprises: 183 (SDP), PRACK (SDP)/200PRACK, UPDATE (SDP)/200UPDATE is specially:
Step 103 and step 104: terminal B sends 183SDP message to AS, and the 183SDP message of transmitting self terminal B by AS is to terminal A, and to be terminal B send to terminal A with oneself media resource information by AS to these two step purposes;
Step 105 and step 106: terminal A response 183SDP message sends PRACK message to AS, transmits the PRACK message of self terminal A to terminal B by AS; Terminal B response PRACK message sends 200PRACK message to AS then, transmits the PRACK message of self terminal B to terminal A by AS;
Step 107 and step 108: terminal A sends UPDATE (SDP) message and gives AS, and AS transmits UPDATE (SDP) message of self terminal A to terminal B, and the purpose of these two steps is media resource information notice terminal B that terminal A is upgraded;
Step 109 and step 110: terminal B response UPDATE (SDP) message, send 200OK (UPDATE) (SDP) message to AS, the 200OK (UPDATE) that AS transmits self terminal B (SDP) message to terminal A;
Step 111～step 118 after terminal B reserved media channel resource is finished, is sent the ring incident, informs the success of terminal A media channel resource reservation, and terminal A also sends response message, and expression terminal A media channel resource is also reserved success; The signaling that relates to comprises: 180Ring, PRACK (SDP)/200PRACK, 200OK (invite)/ACK is specially:
Step 111 and step 112: terminal B sends 180Ring message (ALERTING message) and gives AS, and AS transmits the 180Ring message of self terminal B to terminal A;
Step 113 and step 114: terminal A response 180Ring message sends PRACK message to AS, transmits the PRACK message of self terminal A to terminal B by AS; Terminal B response PRACK message sends 200PRACK message to AS then, transmits the 200PRACK message of self terminal B to terminal A by AS;
Step 115 and step 116: the invite message of terminal B response of step 102, send 200OK (invite) message and give AS, 200OK (invite) message of transmitting self terminal B by AS is to terminal A, and expression terminal B media channel resource reservation is successfully;
Step 117 and step 118: terminal A response 200OK (invite) message sends ACK message to AS, and AS transmits the ACK message of self terminal A to terminal B, also media channel resource reservation success of expression terminal A;
Execution of step 111～step 118, the condition of the media channel link setup of point-to-point remote assistance possesses, then execution in step 119;
Step 119: terminal A and terminal B set up the TCP link and use for point-to-point remote assistance function.
As shown in Figure 2, Fig. 2 is that the schematic flow sheet of point-to-point remote assistance mainly comprises the steps: in the described method of the embodiment of the invention
Step 201: keep complete desktop snapshot in the terminal A internal memory, and guarantee that this desktop snapshot is up-to-date;
Step 202: terminal B regularly sends request to terminal A, obtains the desktop area data that terminal A changes recently; Need to prove, when terminal A receives the request of terminal B for the first time, can send to terminal B to complete desktop snapshot compression;
After step 203: terminal A receives the request of terminal B, calculate the desktop area data that change after the request of self terminal B last time and send to terminal B;
Here, the request that the medium signaling in the point-to-point remote assistance process relates to is abideed by the RFB3.8 agreement and is realized, repeats no more herein.
Next 3 pairs of described systems of the embodiment of the invention are elaborated in conjunction with the accompanying drawings.
As shown in Figure 3, Fig. 3 is the structural representation of the described system of the embodiment of the invention, specifically can comprise: at least two terminals and application server, and terminal is respectively assistance requesting terminal and assistance provides terminal, wherein,
Assistance requesting terminal and assistance provide terminal, mainly reserve media channel resource between the two by application server switched-media resource information and according to media resource information; After the success of the media channel resource reservation between the two, assistance requesting terminal and assistance provide terminal also to be used for, and set up media channel according to the media channel resource of reserving, and utilize the media channel of setting up to carry out point-to-point remote assistance.
This terminal specifically can comprise: exchange processing module, passage are set up module and far module, wherein,
Exchange processing module is used Session Initiation Protocol and SDP agreement and distant terminal general application server switched-media resource information, and reserves described request according to described media resource information and assist terminal and described assistance that the media channel resource of terminal between the two is provided;
Passage is set up module, after media channel resource reservation success and distant terminal set up media channel according to the media channel resource of reserving;
Far module provides the desktop data of variation or the desktop data of variation regularly is provided to distant terminal by the media channel regular request distant terminal of setting up.
4 pairs of described terminals of the embodiment of the invention are elaborated in conjunction with the accompanying drawings at last.
As shown in Figure 4, Fig. 4 is the structural representation of the described terminal of the embodiment of the invention, and this terminal can be used as assistance requesting terminal, also can be used as to assist terminal is provided, and specifically can comprise: exchange processing module, passage are set up module and far module, wherein,
Exchange processing module, be used to use Session Initiation Protocol and SDP agreement and distant terminal general application server switched-media resource information, and reserve described request according to described media resource information and assist terminal and described assistance that the media channel resource of terminal between the two is provided;
Be exactly specifically, when this terminal during as assistance requesting terminal, exchange processing module judges whether this terminal all possesses point-to-point remote assistance ability, when confirming that this terminal and assistance provide terminal all to possess point-to-point remote assistance ability, provide terminal to use Session Initiation Protocol and SDP agreement general application server switched-media resource information with assistance, and assist terminal and assistance that the media channel resource of terminal between the two is provided according to media resource information reservation request; When this terminal provides terminal as assistance, exchange processing module judges whether this terminal all possesses point-to-point remote assistance ability, when confirming that this terminal and assistance requesting terminal all possess point-to-point remote assistance ability, exchange processing module and assistance requesting terminal are used Session Initiation Protocol and SDP agreement general application server switched-media resource information, and assist terminal and assistance that the media channel resource of terminal between the two is provided according to media resource information reservation request.
Passage is set up module, is used for after media channel resource reservation success and distant terminal is set up media channel according to the media channel resource of reserving.
Far module is used for the desktop data of variation being provided or the desktop data of variation regularly being provided to distant terminal by the media channel regular request distant terminal of setting up;
Be exactly specifically, when providing terminal as assistance, far module regularly sends request to assistance requesting terminal, and after the complete desktop data that provide of request collaborationist are provided for the first time, regularly obtains the desktop area data that change in the scheduled time that the request collaborationist provides.When this terminal during as assistance requesting terminal, far module is received when assisting the request of terminal is provided for the first time, complete desktop data is offered assist to provide terminal; Receive afterwards when assisting the request of terminal is provided, the desktop area data that change in the scheduled time are offered assistance requesting terminal.
In sum, the embodiment of the invention provides point-to-point remote assistance method, system and the terminal in a kind of IP Multimedia System, have good interoperability and autgmentability, overcome in the existing remote assistance the shortage versatility that custom protocol brings and the problem of standardization of adopting.
More than; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (10)
1. the point-to-point remote assistance method in the IP Multimedia System business is characterized in that, comprising:
Steps A: assistance requesting terminal and assistance provide terminal to pass through application server switched-media resource information and reserve media channel resource between the two according to described media resource information;
Step B: after described request assists terminal and described assistance that the media channel resource reservation success of terminal between the two is provided, set up media channel according to the media channel resource of reserving, and utilize described media channel to carry out point-to-point remote assistance.
2. method according to claim 1 is characterized in that, described steps A specifically comprises:
Steps A 1: described request assists terminal and described assistance to provide terminal to judge respectively whether oneself all possesses point-to-point remote assistance ability, execution in step A2 when confirming that the two all possesses point-to-point remote assistance ability;
Steps A 2: described request assists terminal and described assistance to provide terminal to use Session Initiation Protocol and SDP agreement by described application server switched-media resource information, and reserves media channel resource between the two according to described media resource information.
3. method according to claim 2 is characterized in that, described steps A 1 specifically comprises:
Described request assists terminal and described assistance to provide terminal to be registered to application server AS respectively;
Described request assists terminal and described assistance to provide terminal to judge from the address that application server receives register command according to oneself respectively, if receive the actual address of the address of register command for oneself, then think and oneself possess point-to-point remote assistance ability, and notify the other side, otherwise think oneself not possess point-to-point assistance ability by application server;
When confirming that own and distant terminal all possess point-to-point remote assistance ability, described request assists terminal and described assistance to provide terminal to use Session Initiation Protocol and SDP agreement by described application server switched-media resource information, and reserves media channel resource between the two according to described media resource information.
4. method according to claim 2 is characterized in that, described steps A 2 specifically comprises:
Described request assists terminal to use Session Initiation Protocol and SDP agreement to send by described application server to carry described request and assist the message of the media resource information of terminal to provide terminal to described assistance, and described assistance provides terminal to use Session Initiation Protocol and SDP agreement to return by described application server and carries described assistance and provide the message of the media resource information of terminal to assist terminal to described request;
Described request assists terminal and described assistance to provide terminal to reserve media channel resource between the two according to the media resource information that receives respectively.
5. according to any described method in the claim 1 to 4, it is characterized in that described step B specifically comprises:
Step B1: after described request assisted terminal and described assistance that the media channel resource reservation success of terminal between the two is provided, described request assisted terminal and described assistance to provide terminal to set up the TCP link as media channel according to the media channel resource of reserving;
Step B2: described assistance provides terminal to assist terminal that the desktop data of variation are provided by described media channel regular request described request.
6. method according to claim 5 is characterized in that, described step B2 specifically comprises:
Described assistance provides terminal regularly to send request and assists terminal to described request, and described request assists terminal to receive for the first time when described assistance provides the request of terminal, complete desktop data is offered described assistance terminal is provided; Described request assists terminal to receive when described assistance provides the request of terminal afterwards, the desktop area data that change in the scheduled time is offered described request assist terminal.
7. the point-to-point remote assisting system in the IP Multimedia System business is characterized in that, comprising: at least two terminals and application server, and described terminal is respectively assistance requesting terminal and assistance provides terminal, wherein,
Described request assists terminal and described assistance that terminal is provided, and is used for reserving media channel resource between the two by described application server switched-media resource information and according to described media resource information; After the success of the media channel resource reservation between the two, described request assists terminal and described assistance to provide terminal also to be used for, and sets up media channel according to the media channel resource of reserving, and utilizes described media channel to carry out point-to-point remote assistance.
8. system according to claim 7 is characterized in that, described terminal specifically comprises:
Described exchange processing module, be used to use Session Initiation Protocol and SDP agreement and distant terminal general application server switched-media resource information, and reserve described request according to described media resource information and assist terminal and described assistance that the media channel resource of terminal between the two is provided;
Described passage is set up module, is used for after media channel resource reservation success and distant terminal is set up media channel according to the media channel resource of reserving;
Described far module is used for the desktop data of variation being provided or the desktop data of variation regularly being provided to described distant terminal by the described distant terminal of described media channel regular request.
9. a terminal is characterized in that, provides terminal as assistance requesting terminal or assistance, comprising: exchange processing module, passage are set up module and remote assistance module, wherein,
Described exchange processing module, be used to use Session Initiation Protocol and SDP agreement and distant terminal general application server switched-media resource information, and reserve described request according to described media resource information and assist terminal and described assistance that the media channel resource of terminal between the two is provided;
Described passage is set up module, is used for after media channel resource reservation success and distant terminal is set up media channel according to the media channel resource of reserving;
Described far module is used for the desktop data of variation being provided or the desktop data of variation regularly being provided to described distant terminal by the described distant terminal of described media channel regular request.
10. terminal according to claim 9, it is characterized in that, described exchange processing module specifically is used for, judge whether this terminal all possesses point-to-point remote assistance ability, when confirming that this terminal and distant terminal all possess point-to-point remote assistance ability, use Session Initiation Protocol and SDP agreement and distant terminal general application server switched-media resource information, and reserve described request according to described media resource information and assist terminal and described assistance that the media channel resource of terminal between the two is provided.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010146259.9A CN101815098B (en) | 2010-04-14 | 2010-04-14 | Point-to-point remote assistance method, system and terminal in IP multimedia subsystem |
| PCT/CN2010/074269 WO2011127690A1 (en) | 2010-04-14 | 2010-06-22 | Method, system and terminal for performing point-to-point remote assistance in internet protocol multimedia subsystem |
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| CN201010146259.9A CN101815098B (en) | 2010-04-14 | 2010-04-14 | Point-to-point remote assistance method, system and terminal in IP multimedia subsystem |
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| WO2011127690A1 (en) * | 2010-04-14 | 2011-10-20 | 中兴通讯股份有限公司 | Method, system and terminal for performing point-to-point remote assistance in internet protocol multimedia subsystem |
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| CN106792798A (en) * | 2016-11-28 | 2017-05-31 | 北京奇虎科技有限公司 | Line detection method and device that mobile terminal remote is assisted |
| CN106792798B (en) * | 2016-11-28 | 2020-09-11 | 北京奇虎科技有限公司 | Mobile terminal remote assistance connection detection method and device |
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| CN113726895B (en) * | 2021-08-31 | 2023-08-25 | 广州艾美网络科技有限公司 | File transmission method and device and network KTV system |
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| CN101815098B (en) | 2014-04-30 |
| WO2011127690A1 (en) | 2011-10-20 |
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