CN103517463A - Home gateway, voice communication method and apparatus - Google Patents
Home gateway, voice communication method and apparatus Download PDFInfo
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- CN103517463A CN103517463A CN201210205493.3A CN201210205493A CN103517463A CN 103517463 A CN103517463 A CN 103517463A CN 201210205493 A CN201210205493 A CN 201210205493A CN 103517463 A CN103517463 A CN 103517463A
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Abstract
The invention discloses a home gateway, a voice communication method and a voice communication apparatus. The home gateway includes a voice communication gateway which is connected with a first terminal in a local area network inside the home gateway and an IMS core network outside the home gateway and is used for establishing a voice communication connection between the first terminal in the local area network inside the home gateway and a second terminal of the IMS core network outside the home gateway. With the home gateway, the voice communication method and the voice communication apparatus of the invention adopted, the problem of singleness of modes of the access of a terminal to an IMS to realize voice communication in the prior art can be solved, and the flexibility of the access of the terminal to the IMS to realize voice communication can be improved, and user experience can be enhanced.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of home gateway, audio communication method and device.
Background technology
Home gateway (Home Gate Way), is to realize inner each equipment of home network and the equipment that external equipment intercoms mutually, is core component part in home network.Cisco to the definition of home gateway is: network information equipment within the family and the intelligent gateway between Smart Broadband Access Network.By the equipment in home network, can carry out information interaction with communication network, also can carry out the information interaction between internal unit.
Concerning user, along with popularizing of high-speed wideband online and home computer, increasing digital multimedia device is as notebook computer, Digital Television, mobile phone, landline telephone and other consumption electronic products, often needs at one time in section by network insertion to the Internet.Meanwhile, the pursuit of user to the cheap service of network high-quality, as packetized voice call service etc., is naturally pushed out the application of home gateway.Home gateway can make user set up easily home network, intelligent link, can also facilitate managing family internal-external network and multimedia equipment.Concerning operator, home gateway is to promote the best weapon of its business to personal user's penetration, is expansion and the extension of its Access Network.By home gateway, distance own and user can shorten in operator, facilitates the expansion of new business and value-added service.
Voice call is most important business in mobile network.When mobile cellular network evolves to Long Term Evolution (Long Term Evolution, referred to as the LTE) stage, voice call is undertaken by the Multimedia session of IP Multimedia System (IP Multimedia Subsystem, referred to as IMS).Mobile terminal is by LTE packet domain access IMS, and the control signal of speech business and media are all based on IP link transmission.But, although home gateway can be supported the multiple access capabilities such as fixed network access and cellular network access simultaneously, access terminal in home gateway in the situation that not possessing the IMS of access ability, still cannot access IMS to carry out voice call.
The single problem of mode of carrying out voice call for terminal access to IMS in correlation technique, not yet proposes effective solution at present.
Summary of the invention
The single problem of mode of carrying out voice call for terminal access to IMS in correlation technique, the invention provides a kind of home gateway, audio communication method and device, at least to address the above problem.
According to an aspect of the present invention, a kind of home gateway is provided, comprise: voice call gateway, be connected with the IMS core net of described home gateway outside with the first terminal in home gateway internal lan, between the second terminal for the first terminal at described home gateway internal lan and the access IMS core net of described home gateway outside, set up voice call and be connected.
Preferably, described voice call gateway comprises: session control module, for the following action that completes voice call link end to end by SIP one of at least: set up, discharge, switch; Media delivery and control module, for completing encapsulation and the transmission of voice medium form by RTP.
Preferably, described home gateway also comprises: authentication module, is connected with described voice call gateway, for described first terminal is carried out to authentication.
Preferably, described authentication module also for by the successful first terminal of authentication with described home gateway in the identify label of described IMS network by IMS network described in described voice call gateway accessing.
According to a further aspect in the invention, provide a kind of audio communication method, having comprised: used above-mentioned home gateway to carry out voice call.
Preferably, described method comprises: in the situation that described first terminal exists IMS voice call to be connected with described the second terminal, when described first terminal accesses in the situation of described local area network (LAN), described voice call gateway receives the handover request that described IMS voice call is connected by described local area network (LAN) from described first terminal; Described voice call gateway initiates to re-start the request of media negotiation to described the second terminal.
Preferably, described method comprises: in the situation that described first terminal exists the IMS voice call by described local area network (LAN) to be connected with described the second terminal, described voice call gateway reception is transferred to described IMS voice call the transfer request of the third terminal in described local area network (LAN) from described first terminal; Described voice call gateway initiates to carry out the request of media negotiation to described third terminal; In the situation that described third terminal is successfully set up with the IMS voice call of described the second terminal by described local area network (LAN), be connected, described voice call gateway notifies described first terminal to finish call.
Preferably, described method comprises: in the situation that the described first terminal in described local area network (LAN) and at least one third terminal in described local area network (LAN) need to be set up IMS voice call by described local area network (LAN) with described the second terminal, be connected, described voice call gateway sends respectively to described first terminal and described third terminal the request that adds described call meeting; Adhere to after the response of described call meeting receiving described first terminal and described third terminal, described voice call gateway initiates to re-start the request of media negotiation to described the second terminal.
According to a further aspect in the invention, also provide a kind of voice call device, be arranged in above-mentioned voice call gateway, for carrying out above-mentioned audio communication method.
Preferably, described device comprises: the first receiver module, for in the situation that described first terminal exists IMS voice call to be connected with described the second terminal, when described first terminal accesses in the situation of described local area network (LAN), receive the handover request that described IMS voice call is connected by described local area network (LAN) from described first terminal; The first heavy negotiation module, for initiating to re-start the request of media negotiation to described the second terminal.
Preferably, described device comprises: the second receiver module, for in the situation that described first terminal exists the IMS voice call by described local area network (LAN) to be connected with described the second terminal, reception is transferred to described IMS voice call the transfer request of the third terminal in described local area network (LAN) from described first terminal; Negotiation module, for initiating to carry out the request of media negotiation to described third terminal; Notification module, in the situation that described third terminal is successfully set up with the IMS voice call of described the second terminal by described local area network (LAN) is connected, notifies described first terminal to finish call.
Preferably, described device comprises: sending module, for in the situation that the described first terminal of described local area network (LAN) and at least one third terminal in described local area network (LAN) need to be set up IMS voice call by described local area network (LAN) with described the second terminal is connected, to described first terminal and described third terminal, send respectively the request that adds described call meeting; The second heavy negotiation module, for adhereing to after the response of described call meeting receiving described first terminal and described third terminal, initiates to re-start the request of media negotiation to described the second terminal.
By the present invention, adopt voice call gateway, be connected with first terminal in home gateway internal lan and the IMS core net of home gateway outside, for set up voice call between the first terminal of family's intra-gateway local area network (LAN) and the second terminal of the access IMS core net of home gateway outside, be connected, solved the single problem of mode that in correlation technique, terminal access to IMS carries out voice call, improve terminal access to IMS and carried out the flexibility of voice call, promoted user's experience.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms the application's a part, and schematic description and description of the present invention is used for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is according to the structured flowchart of the home gateway of the embodiment of the present invention;
Fig. 2 is according to the preferred structure block diagram of the voice call gateway of the embodiment of the present invention;
Fig. 3 is the preferred structure block diagram according to the home gateway of the embodiment of the present invention;
Fig. 4 is according to the flow chart of the audio communication method of the embodiment of the present invention;
Fig. 5 is according to the structured flowchart of the voice call device of the embodiment of the present invention;
Fig. 6 is according to the preferred structure block diagram one of the voice call device of the embodiment of the present invention;
Fig. 7 is according to the preferred structure block diagram two of the voice call device of the embodiment of the present invention;
Fig. 8 is according to the preferred structure block diagram three of the voice call device of the embodiment of the present invention;
Fig. 9 is according to the structural representation of the network system in the home gateway of the embodiment of the present invention one;
Figure 10 is according to software function framework schematic diagram in the home gateway of the embodiment of the present invention one;
Figure 11 is according to the functional framework schematic diagram of the voice gateways inside of the embodiment of the present invention one;
Figure 12 is the functional framework schematic diagram according to the authentication module of the embodiment of the present invention one;
Figure 13 is the voice switching flow schematic diagram according to the embodiment of the present invention two;
Figure 14 is the flow chart switching according to the voice gateways processed voice of the embodiment of the present invention two;
Figure 15 is the calling transfer flow schematic diagram according to the embodiment of the present invention three;
Figure 16 processes and calls out the flow chart shifting according to the voice gateways of the embodiment of the present invention three;
Figure 17 is the videoconference start flow schematic diagram under controlling according to the home gateway of the embodiment of the present invention four;
Figure 18 controls the flow chart of videoconference according to the voice gateways of the embodiment of the present invention four.
Embodiment
Hereinafter with reference to accompanying drawing, also describe the present invention in detail in conjunction with the embodiments.It should be noted that, in the situation that not conflicting, embodiment and the feature in embodiment in the application can combine mutually.
The present embodiment provides a kind of home gateway, Fig. 1 is according to the structured flowchart of the home gateway 10 of the embodiment of the present invention, as shown in Figure 1, this home gateway 10 comprises: voice call gateway 12, be connected with first terminal in home gateway internal lan and internet protocol multi-media network subsystem (IMS) core net of home gateway outside, between the second terminal for the first terminal at family's intra-gateway local area network (LAN) and the access IMS core net of home gateway outside, set up voice call and be connected.
The present embodiment is by above-mentioned home gateway, between first terminal in voice call gateway 12 family intra-gateway local area network (LAN) and the second terminal in the access IMS core net of home gateway outside, setting up voice call is connected, by the voice call network organic connections outside the local area network (LAN) in home gateway and home gateway get up, when home gateway is supported fixed network access and cellular network access capability simultaneously, home network inside does not possess the terminal of mobile cellular network access capability also can pass through cable LAN or Wireless Fidelity (Wireless Fidelity, referred to as WiFi) WLAN (wireless local area network) access home gateway, and by its outside access function access fixed network or mobile cellular network, and then access IMS core net, and complete voice call between the other-end of access IMS core net.Operator can possess by disposing this class the home gateway of IMS termination function and voice forwarding ability, the terminal type of expansion access, and quantity extends one's service.Solve the single problem of mode that in correlation technique, terminal access to IMS carries out voice call, improved the flexibility that terminal access to IMS carries out voice call, promoted user's experience.
In implementation process, voice call gateway accesses IMS network (SIP registration) by Session Initiation Protocol, Session Initiation Protocol is to arrive IMS network by IP link transmission, and home gateway can connect IP link by access in radio module, also can connect IP link by radio access module.Terminal in local area network (LAN) can be connected with home gateway by local area network (LAN) access module, and call voice gateway is a part for home gateway, its major function is by Session Initiation Protocol, to complete some functions of voice call, is mainly the mutual of SIP signaling in local area network (LAN) between terminal and voice call gateway.Can say, voice call gateway, is connected with the terminal in local area network (LAN), and is connected with IMS core net, normally mutual based on SIP signaling.
Fig. 2 is according to the preferred structure block diagram of the voice call gateway 12 of the embodiment of the present invention, as shown in Figure 2, voice call gateway 12 can comprise: session control module 122, for the following action that completes voice call link end to end by initial session protocol (Session Initial Protocol, referred to as SIP) one of at least: set up, discharge, switch; Media delivery and control module 124, be connected with session control module 122, for complete encapsulation and the transmission of voice medium form by RTP (Real-time Transport Protocol, referred to as RTP).
Fig. 3 is according to the preferred structure block diagram of the home gateway 10 of the embodiment of the present invention, and as shown in Figure 3, home gateway 10 can also comprise: authentication module 14, is connected with voice call gateway 12, for first terminal is carried out to authentication.In this way, can improve the access security of IMS core net, avoid through the terminal of authorizing, via voice call gateway 12 access IMS core net, not carrying out voice call.
Preferably, authentication module 14 can also for by the successful first terminal of authentication with home gateway in the identify label of IMS core net by voice call gateway accessing IMS core net.In this way, can make not obtain the terminal of IMS core net mandate, the user who for example opens an account less than the operator in IMS core net for those, thus also can use the voice calling service under IMS by the IMS sign of authorized home gateway.
A kind of audio communication method is provided in the present embodiment, Fig. 4 is according to the flow chart of the audio communication method of the embodiment of the present invention, as shown in Figure 4, the method is used the above-mentioned home gateway that has comprised voice call gateway 12 10 to carry out voice call, comprises the steps:
Step S402, use home gateway to carry out voice call, wherein, this home gateway comprises voice call gateway, between the first terminal being connected in ， family intra-gateway local area network (LAN) with the IMS core net of first terminal in home gateway internal lan and home gateway outside and the second terminal of the access IMS core net of home gateway outside, setting up voice call is connected.
As a kind of preferred implementation, first terminal in home gateway with home gateway outside the second terminal of access IMS core net carry out in the process of voice call, if first terminal detects wired or WLAN (wireless local area network) available in this home gateway, can initiate local area network (LAN) access process.After first terminal access to LAN, voice call gateway can receive the handover request that IMS voice call is connected by local area network (LAN) from this first terminal; Voice call gateway initiates to re-start the request (SIP reInvite) of media negotiation to the second terminal, after call has re-established, voice call gateway can also send call state notice to this first terminal, to inform that current talking is switched in local area network (LAN).
As a kind of preferred implementation, the second terminal in first terminal in the local area network (LAN) of home gateway and the access IMS core net outside home gateway is undertaken in the process of voice call by local area network (LAN), if first terminal is wished this call transfer to another terminal (being third terminal) in the local area network (LAN) of this home gateway, first terminal can be initiated transfer request to voice call gateway, voice call gateway receives IMS voice call is transferred to after the transfer request of the third terminal in local area network (LAN) from first terminal, can initiate to carry out to third terminal the request (SIP Invite) of media negotiation, third terminal is accepted after this request, to the second terminal of Correspondent Node, initiate to re-start the request (SIP reInvite) of media negotiation, after call has been set up, voice communication gateway can send to first terminal the message of end of conversation, with notice first terminal, finish call.
As a kind of preferred implementation, in the situation that other at least one third terminal in the first terminal in the local area network (LAN) of home gateway and this local area network (LAN) all need with home gateway outside the second terminal of access IMS core net by local area network (LAN), set up voice call, voice call gateway can be thought now needs to initiate call meeting (also claiming videoconference), voice call gateway is according to the object of setting up voice call, to first terminal and third terminal, send respectively the request (SIP Invite) that adds the meeting of conversing, invite them to add call meeting; Receive first terminal and third terminal adhere to call meeting response (SIP 200OK) after, voice call gateway can initiate to re-start to the second terminal the request (SIP reInvite) of media negotiation, after call has been set up, voice gateways can be served as Conference server, between the second terminal of first terminal and third terminal and external network, start the meeting of conversing, and in voice gateways, voice are mixed, realized a plurality of terminals in local area network (LAN) and conversed with the opposite end of external network simultaneously.
Corresponding to above-mentioned audio communication method, the present embodiment also provides a kind of voice call device 50, and this device is used for realizing above-described embodiment and preferred implementation, has carried out repeating no more of explanation.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described device of following examples is preferably realized with software, hardware, or the realization of the combination of software and hardware also may and be conceived.
Fig. 5 is according to the structured flowchart of the voice call device 50 of the embodiment of the present invention, as shown in Figure 5, this device is arranged in the above-mentioned home gateway 10 that has comprised voice call gateway 12, be used for carrying out above-mentioned audio communication method, this device comprises: voice call module 52, be used for using home gateway to carry out voice call, wherein, this home gateway comprises voice call gateway, be connected with first terminal in home gateway internal lan and the IMS core net of home gateway outside, between the second terminal of the first terminal in family's intra-gateway local area network (LAN) and the access IMS core net of home gateway outside, setting up voice call is connected.
Fig. 6 is according to the preferred structure block diagram one of the voice call device 50 of the embodiment of the present invention, as shown in Figure 6, this device 50 can comprise: the first receiver module 62, be connected with voice call module 52, for in the situation that first terminal and the second terminal exist IMS voice call to be connected, in the situation of first terminal access to LAN, receive the handover request that IMS voice call is connected by local area network (LAN) from first terminal; The first heavy negotiation module 64, is connected with the first receiver module 62, for initiate to re-start the request of media negotiation to the second terminal.
Fig. 7 is according to the preferred structure block diagram two of the voice call device 50 of the embodiment of the present invention, as shown in Figure 7, this device 50 can comprise: the second receiver module 72, be connected with voice call module 52, for in the situation that first terminal exists the IMS voice call by local area network (LAN) to be connected with the second terminal, reception is transferred to IMS voice call the transfer request of the third terminal in local area network (LAN) from first terminal; Negotiation module 74, is connected with the second receiver module 72, for initiate to carry out the request of media negotiation to third terminal; Notification module 76, is connected with negotiation module 74, and in the situation that third terminal is successfully set up with the IMS voice call of the second terminal by local area network (LAN) is connected, notice first terminal finishes call.
Fig. 8 is according to the preferred structure block diagram three of the voice call device 50 of the embodiment of the present invention, as shown in Figure 8, this device 50 can comprise: sending module 82, be connected with voice call module 52, for in the situation that the first terminal of local area network (LAN) and at least one third terminal in local area network (LAN) need to be set up IMS voice call by local area network (LAN) with the second terminal is connected, to first terminal and third terminal, send respectively the request that adds the meeting of conversing; The second heavy negotiation module 84, is connected with sending module 82, for adhereing to after the response of call meeting receiving first terminal and third terminal, initiates to re-start the request of media negotiation to the second terminal.
Below in conjunction with preferred embodiment, describe, following preferred embodiment combines above-described embodiment and preferred implementation thereof.
Embodiment mono-
A kind of family voice call gateway is provided in this preferred embodiment, can be deployed in the system that voice call gateway on home gateway and terminal form, and home gateway provides the method for voice call by access IP multi-media network subsystem (IP Multimedia Subsystem, referred to as IMS) for terminal.By said method, terminal can be passed through home gateway in family's network coverage, and call is switched in other home networks on verbal system, also these equipment together can be accessed to session, and man-to-man voice call is become to videoconference form.
The method of this preferred embodiment comprises in the functional module division of voice call gateway in home gateway and framework, home gateway interactive mode between terminal and voice gateways, realize method that terminal voice call switches between mobile cellular network and fixed network and terminal utilize home gateway in voice call gateway, initiate the method for videoconference, the method makes in home gateway also to participate in voice call under IMS without identity under IMS network with without the terminal of cellular network access capability, and participation method comprises to be switched and adds meeting etc.
Voice call gateway function belongs to business function module in home gateway, hereinafter referred voice gateways, wherein can comprise several functional modules: gateway control module, session control module, media delivery and control module, media buffer module, media coding/decoding module.Voice gateways and client are alternately based on IP link, by initial session protocol (Session Initial Protocol, referred to as SIP) complete session establishment, release, handoff procedure end to end, by RTP (Real-time Transport Protocol, referred to as RTP), complete encapsulation and the transmission of voice medium form.Voice gateways possess identify label, and can be used as terminal equipment in certificate server authentication home network.Voice gateways self are as the terminal of access IMS, can receive or initiating speech conversation, or accept to shift from other-end the session of coming, also session can be transferred in home network in one or more terminal, with the form of videoconference, add terminal in many ways to converse.
Fig. 9 is according to the structural representation of the network system in the home gateway of the embodiment of the present invention one, and as shown in Figure 9, voice gateway capability is deployed on home gateway, and external network accesses technology used and comprises the wireless cellular network accesses such as optical fiber technology or 3G, LTE etc.Internal network access can adopt local area network technology, supports wired ethernet and the access of wireless local net mode.
Figure 10 is according to software function framework schematic diagram in the home gateway of the embodiment of the present invention one, as shown in figure 10, from functional hierarchy longitudinally, the software function of home gateway is divided into three levels: upper strata is that business function is voice gateways, completes the functions such as session establishment, release, switching; It is lower to ICP/IP protocol function, and IP and transport layer protocol support are provided; Orlop is each access module, corresponding disparate networks access function.From horizontal function, cut apart, also can be divided into three parts: access control module, function comprises the classification processing of IP address assignment, multi-business flow and forwards, prevents the access control of external network to the unauthorized access of home network and inside terminals; Authentication module, terminal identity authentication function when access network is provided, comprises that home gateway is as the identify label management of terminal access to IMS network, the authentication functions that access authentication is realized and accessed terminal for home network inside.Other parts are logic of business functions and its required support function, and wherein logic of business functions comprises the lower-layer protocols of supporting business logic and driving etc.
Figure 11 is according to the functional framework schematic diagram of the voice gateways inside of the embodiment of the present invention one, as shown in figure 11, this is a SIP client functionality schematic diagram, session control module is that Session Initiation Protocol is realized, media delivery and control module are that Real-time Transport Protocol is realized, and media buffer and media coding/decoding module are combined as the media engine function of voice gateways.Gateway control function is on agreement realization and media engine, role class is like SIP applications client, its function, except initiating and receive voice conversation flow process, can also be accepted a videoconference of initiating request and triggering being comprised to a plurality of terminals from the meeting of terminal in local area network (LAN).
Figure 12 is the functional framework schematic diagram according to the authentication module of the embodiment of the present invention one, and as shown in figure 12, in authentication module, identify label module is used for the identify label of Managing speech gateway as IMS terminal; Authorizing procedure control module realizes the various authentication mechanism of authentication; Authentication arithmetic module is in authorizing procedure, to realize various authentication arithmetics; Client certificate module and server end authentication module are all based on authorizing procedure control module, are used for respectively realizing home gateway as the authorizing procedure of terminal access to IMS network and the authorizing procedure of local area network (LAN) inside terminals access home gateway.
Embodiment bis-
Figure 13 is the voice switching flow schematic diagram according to the embodiment of the present invention two, and as shown in figure 13, in this embodiment, the terminal in local area network (LAN) has been set up IMS voice call with the terminal of another external network.This terminal can be LTE network insertion, may be also that the network insertion of other types is to IP network.Now, if terminal has been found available WLAN (wireless local area network), initiate WLAN (wireless local area network) access process.WLAN (wireless local area network) access, relates to mutual with the access control module of home gateway, and mutual content comprises that the classification of access control to terminal, IP address assignment, multi-business flow processes etc.After terminal accessing WLAN, IMS voice call before hope continues by WLAN (wireless local area network), now terminal is to the voice gateways module handover request that makes a call, and the IMS voice call of request from original LTE switches to the IMS voice call of WLAN (wireless local area network).Voice gateways module is initiated SIP reInvite request to opposite end, re-start media negotiation.After calling re-establishes, voice gateways module sends call state notice to the terminal of initiating to switch, and informs that current calling has been switched to WLAN (wireless local area network).
Figure 14 is the flow chart switching according to the voice gateways processed voice of the embodiment of the present invention two, and as shown in figure 14, this flow process comprises the steps:
Step S1402, voice gateways are received the audio call handover request of terminal, request switches to the voice call based on WLAN (wireless local area network) from the voice call based on mobile core network.
Step S1404, voice gateways inquire about to determine accessing WLAN of this terminal to access control module.
Step S1406, voice gateways are the media characteristic in WLAN (wireless local area network) according to terminal, to call opposite end, sends call request (SIP reInvite), carries out the negotiation again of voice call.
Step S1408, after again consulting successfully, voice gateways switch to WLAN (wireless local area network) by the talking link in local area network (LAN) from mobile core network, comprise chain of command and medium surface, now handover success.
Step S1410, voice gateways send notice (SIP Notify) to the terminal in local area network (LAN), to notify this terminal current talking state.
Embodiment tri-
Figure 15 is the calling transfer flow schematic diagram according to the embodiment of the present invention three, as shown in figure 15, suppose that terminal one and terminal two have all accessed WLAN (wireless local area network), and terminal one is carried out IMS voice call with external network one terminal.Now, terminal one is sent call transfer request (SIP Refer) message to voice gateways module, and voice call is transferred to terminal two.Voice gateways module is accepted after transfer request, to terminal two, sends call request (SIP Invite), after terminal two call accepted requests, to the opposite end of call, initiates (SIP reInvite), re-starts media negotiation.After heavily consulting successfully, call out to shift and can regard as successfully, now to terminal one, send the message of end of conversation, and the message of call state notice.
Figure 16 processes and calls out the flow chart shifting according to the voice gateways of the embodiment of the present invention three, and as shown in figure 16, this flow process comprises the steps:
Step S1602, voice gateways are received the call transfer request (SIP Refer) of terminal one, this request is that indication is transferred to voice call terminal two from terminal one.
Step S1604, whether voice gateways to access control module inquiry terminal two access to LAN.If accessed, voice gateways are to terminal two request of making a call, and terminal two is carried out media negotiation with voice gateways simultaneously.
Step S1606, after the session establishment of voice gateways and terminal two, then according to the media characteristic of terminal two, sends call request (SIP reInvite) to call opposite end, to carry out the negotiation again with opposite end voice call.
Step S1608, after again consulting successfully, voice gateways have been transferred to the talking link in local area network (LAN) terminal two from terminal one, and send ending request (SIP BYE) to terminal one, to cut off the voice call of terminal Yi Yu opposite end.
Step S1610, voice gateways send notice (SIP Notify) to the terminal one in local area network (LAN), to notify this terminal current talking state.
Embodiment tetra-
Figure 17 is the videoconference start flow schematic diagram under controlling according to the home gateway of the embodiment of the present invention four, as shown in figure 17, suppose all accessing WLANs of terminal one and terminal two, and another terminal in local area network (LAN) has sent SIP Refer message request voice call is transferred to terminal one and terminal two, transfer flow can be with reference to Figure 15 and 16; Or the terminal in voice call sends SIP Refer, and terminal one and terminal two are joined in voice call.Above two kinds of situations, voice gateways are all thought need to initiate videoconference.Voice gateways module, according to calling out the object shifting, initiates to add the request of meeting to them, sends SIP Invite request respectively to terminal one and terminal two, invites them to add videoconference.Terminal one and terminal two are returned respectively SIP 200OK response and are adhereed to videoconference.Because voice gateways need to be mixed the voice of conference member in all local area network (LAN)s, then send to the opposite end of call, therefore have and must re-start media negotiation with call opposite end.So voice gateways module then sends call request SIP reInvite to call opposite end, re-starts media negotiation.After consulting successfully, voice gateways module is served as Conference server, between terminal one and terminal two and external network terminal, start videoconference, and in voice gateways module, voice are mixed, a plurality of terminals that realize in local area network (LAN) are conversed with opposite end simultaneously.
Figure 18 controls the flow chart of videoconference according to the voice gateways of the embodiment of the present invention four, as shown in figure 18, this flow process comprises the steps:
Step S1802, voice gateways receive that transfer request (SIP Refer) indication transfers to the two or more terminals in local area network (LAN) by voice call; Or the two or more emphasis in local area network (LAN) are joined in voice call.
Step S1804, voice gateways are thought now needs to initiate videoconference, so whether the terminal that will add to access control module inquiry (take two terminals in this preferred embodiment---terminal one and terminal two describe as example) in access to LAN.
Step S1806, if accessed, voice gateways are to terminal one and terminal two request of making a call, and carry out respectively media negotiation with these two terminals.
Step S1808, after voice gateways and above-mentioned two terminals are all set up session, sends call request (SIP reInvite) to call opposite end, to carry out the negotiation again of the voice call of voice gateways and opposite end.
Step S1810, consults to comprise the heavily negotiation of media again.Because follow-up voice call need to mix the voice of all conference members in local area network (LAN), then send to opposite end, therefore the media characteristic of audio mixing and opposite end need to be held consultation.
Step S1812, if in step S1802, voice gateways are received is call transfer request, sends ending request (SIP BYE) to the terminal of initiating to shift, and initiates the terminal that shifts and the voice call of opposite end, otherwise skip this step to switch.
Step S1814, after again consulting successfully, voice gateways are by the audio access videoconference of terminal one and terminal two, and now videoconference has been set up.
Step S1816, voice gateways send notice (SIP Notify) to all conference member terminals in local area network (LAN), to notify this terminal current talking state.
In another embodiment, also provide a kind of software, the technical scheme that this software is described for carrying out above-described embodiment and preferred embodiment.
In another embodiment, also provide a kind of storage medium, stored above-mentioned software in this storage medium, this storage medium includes but not limited to CD, floppy disk, hard disk, scratch pad memory etc.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, and in some cases, can carry out shown or described step with the order being different from herein, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a home gateway, is characterized in that, comprising:
Voice call gateway, be connected with first terminal in home gateway internal lan and the internet protocol multi-media network subsystem IMS core net of described home gateway outside, between the second terminal for the first terminal at described home gateway internal lan and the access IMS core net of described home gateway outside, set up voice call and be connected.
2. home gateway according to claim 1, is characterized in that, described voice call gateway comprises:
Session control module, for the following action that completes voice call link end to end by initial session protocol SIP one of at least: set up, discharge, switch;
Media delivery and control module, for completing encapsulation and the transmission of voice medium form by realtime transmission protocol RTP.
3. home gateway according to claim 1, is characterized in that, described home gateway also comprises:
Authentication module, is connected with described voice call gateway, for described first terminal is carried out to authentication.
4. home gateway according to claim 3, is characterized in that, described authentication module also for by the successful first terminal of authentication with described home gateway in the identify label of described IMS network by IMS network described in described voice call gateway accessing.
5. an audio communication method, is characterized in that, comprising: use the home gateway as described in any one in claim 1 to 4 to carry out voice call.
6. method according to claim 5, is characterized in that, comprising:
In the situation that described first terminal exists IMS voice call to be connected with described the second terminal, when described first terminal accesses in the situation of described local area network (LAN), described voice call gateway receives the handover request that described IMS voice call is connected by described local area network (LAN) from described first terminal;
Described voice call gateway initiates to re-start the request of media negotiation to described the second terminal.
7. method according to claim 5, is characterized in that, comprising:
In the situation that described first terminal exists the IMS voice call by described local area network (LAN) to be connected with described the second terminal, described voice call gateway reception is transferred to described IMS voice call the transfer request of the third terminal in described local area network (LAN) from described first terminal;
Described voice call gateway initiates to carry out the request of media negotiation to described third terminal;
In the situation that described third terminal is successfully set up with the IMS voice call of described the second terminal by described local area network (LAN), be connected, described voice call gateway notifies described first terminal to finish call.
8. method according to claim 5, is characterized in that, comprising:
In the situation that the described first terminal in described local area network (LAN) and at least one third terminal in described local area network (LAN) need to be set up IMS voice call by described local area network (LAN) with described the second terminal, be connected, described voice call gateway sends respectively to described first terminal and described third terminal the request that adds described call meeting;
Adhere to after the response of described call meeting receiving described first terminal and described third terminal, described voice call gateway initiates to re-start the request of media negotiation to described the second terminal.
9. a voice call device, is characterized in that, is arranged in the voice call gateway as described in claim 1 to 4 any one, for carrying out the audio communication method as described in claim 5 to 8 any one.
10. device according to claim 9, is characterized in that, comprising:
The first receiver module, for in the situation that described first terminal exists IMS voice call to be connected with described the second terminal, when described first terminal accesses in the situation of described local area network (LAN), receive the handover request that described IMS voice call is connected by described local area network (LAN) from described first terminal;
The first heavy negotiation module, for initiating to re-start the request of media negotiation to described the second terminal.
11. devices according to claim 9, is characterized in that, comprising:
The second receiver module, for in the situation that described first terminal exists the IMS voice call by described local area network (LAN) to be connected with described the second terminal, reception is transferred to described IMS voice call the transfer request of the third terminal in described local area network (LAN) from described first terminal;
Negotiation module, for initiating to carry out the request of media negotiation to described third terminal;
Notification module, in the situation that described third terminal is successfully set up with the IMS voice call of described the second terminal by described local area network (LAN) is connected, notifies described first terminal to finish call.
12. devices according to claim 9, is characterized in that, comprising:
Sending module, for in the situation that the described first terminal of described local area network (LAN) and at least one third terminal in described local area network (LAN) need to be set up IMS voice call by described local area network (LAN) with described the second terminal is connected, to described first terminal and described third terminal, send respectively the request that adds described call meeting;
The second heavy negotiation module, for adhereing to after the response of described call meeting receiving described first terminal and described third terminal, initiates to re-start the request of media negotiation to described the second terminal.
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| CN201210205493.3A CN103517463B (en) | 2012-06-20 | 2012-06-20 | Home gateway, audio communication method and device |
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| CN103517463B (en) | 2018-04-27 |
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