CN101427599A - Mobile telephone VOIP/cellular seamless roaming switching controller - Google Patents
Mobile telephone VOIP/cellular seamless roaming switching controller Download PDFInfo
- Publication number
- CN101427599A CN101427599A CNA2006800080781A CN200680008078A CN101427599A CN 101427599 A CN101427599 A CN 101427599A CN A2006800080781 A CNA2006800080781 A CN A2006800080781A CN 200680008078 A CN200680008078 A CN 200680008078A CN 101427599 A CN101427599 A CN 101427599A
- Authority
- CN
- China
- Prior art keywords
- communication equipment
- mobile communication
- communication link
- wifi
- network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
A nomadic server and a related system provides seamless roaming for a mobile communication device between different types of wireless networks, such as WiFi and cellular networks for voice, data and video communication. Use of the nomadic server enables a combination of WiFi and cellular networks for providing access to the cellular phones and make use of the VOIP networks for switching the calls wherever possible. The nomadic server is a telephone communication processing and switching server that will ''hold'' the present, in-progress telephone communications without dropping, while roaming without losing the present, in-progress communication. For example, a telephone communication can be seamlessly switching between VOIP and cellular telephone networks using the nomadic server. Nomadic server resources interface with the VOIP and cellular network switches to provide the hand-off between networks. This approach enables switching of telephone communications over a VOIP network wherever possible either through WiFi or through cellular networks.
Description
Related application
The sequence number that the application requires same inventor to submit on January 14th, 2005 is that 60/643,829 exercise question is the U.S. Provisional Application No. of " telephone communication processing controller (TELEPHONECOMMUNICATIONS PROCESSING CONTROLLER) ".It is that 60/643,829 exercise question is " telephone communication processing controller (TELEPHONECOMMUNICATIONS PROCESSING that the application all introduces the sequence number of submitting on January 14th, 2005 at this
CONTROLLER) " U.S. Provisional Application for your guidance.This application also is that the sequence number of submitting on January 6th, 2005 is 11/031,498 exercise questions are the part continuation application of the United States Patent (USP) of " phone that automaticallyes switch (TELEPHONE WITH AUTOMATICSWITCHING BETWEEN CELLULAR AND VOIP NETWORKS) " between honeycomb and VOIP network, it is introduced into for your guidance at this.Sequence number is 11/031, the sequence number that 498 U.S. Patent application requires on January 6th, 2004 to submit to is 60/534,466 exercise questions for " at honeycomb and use the radio telephone that automaticallyes switch between the WI-FI network of WI-FI signal strength values (RADIOTELEPHONE WITH AUTOMATICSWITCHING BETWEEN CELLULAR AND WI-FI NETWORKSUSING WI-FI SIGNAL STRENGTH VALUES " U.S. Provisional Application No., its content is all introduced for your guidance at this.
Technical field
The present invention relates to the network service process field.Particularly, the present invention relates to seamless switching communication between Internet Protocol telephone (VOIP), public cellular and omnibus circuit switching network.
Background technology
Current telephone communication occur in wireless cellular network such as GSM, CDMA and CDMA2000, Internet Protocol telephone (VOIP) or circuit-switched network such as on the PSTN.Use the current state of most telephone fields of such network to be, each phone is limited to only particular network of use.For example, cellular phone works is in cellular network; The VOIP phone works is in the VOIP network, and landline phone works is in circuit-switched network.Such restriction means that developing telephone communication can not carry out seamless switching under the situation that can not lose connection between honeycomb, VOIP and circuit-switched network.
Such wireless network uses the established part of wireless frequency spectrum and is shared by many users.The infrastructure cost of wireless network since the size of the network equipment with complexity and relative high.There is very big difference on the performance of different networks.For example, conventional wireless cellular network covers big relatively geographic area, but provides low relatively bandwidth.Other wireless networks such as the CDMA2000-EV-DO/DV network, provide data service than higher bandwidth and enhancing such as network browsing.Yet these networks also are extruded into many users on the regulation frequency spectrum of relative fraction.The wireless network of other types is suitable for improving spectrum efficiency, has the speed of increase and less coverage.For example, IEEE802.11x (or WiFi) network can use direct sequence spread spectrum (DSSS) pattern with up to the speed rates of 11Mbps or use OFDM (OFDM) pattern with the speed rates up to 54Mbps.
Meet the zone that WiFi (for example, IEEE 802.11b) network of network WAP (wireless access point) can covering diameter hundreds of foot.Each such Network Access Point is connected to bigger network (for example, the Internet).Such example is WiFi VOIP (a wireless fidelity voice over ip protocol), can use the technology of stipulating among the IEEE802.xx to carry out radiotelephone call on the internet on Network Access Point by this WiFi VOIP communication device user.VOIP obtains simulated audio signal and they is converted into the method for the numerical data that can transmit on the internet.Traditional VOIP telephone communication is enabled by the VOIP network carrier, and it uses VOIP network (for example, the Internet) to send the call based on VOIP.VOIP is that enable to comprise with network compatibility that the VOIP of suitable route switches and based on the charging of the call of VOIP.
In order to cover bigger geographic area, the IEEE 802.11x that requires the relatively large number amount is Network Access Point and relative big wired unloaded transmission network for example.Wherein, because the relatively little geographical coverage area of each Network Access Point, resulting network based on IEEE 802.11x may be therefore too expensive and do not allow to set up.In addition, little overlay area may cause many " dead bands ", and mobile communication device user can not use the VOIP network to carry out call therein.
Traditional VOIP phone (it works in the WiFi overlay area of corresponding WiFi access point (focus)) provides relatively cheap telephone communication.Yet because the overlay area of being supported by each WiFi access point is little, the WiFi availability is limited.
It is relatively more expensive and have a limited multimedia capabilities that traditional cell phone (working in its cellular coverage in cellular network) is used for telephone communication.Cellular network and the availability of network covered more wide more vast geographic area.
Traditional land line phone (its in circuit-switched network such as working in most dwelling houses) does not provide widely for example video of telephone communication features.The mobility that is provided such as VOIP phone or cell phone by mobile communication equipment is not provided such land line phone yet.
Summary of the invention
The present invention relates to interface server, be called roam server (nomadic server), and related system, this system provides the seamless roam of the mobile communication equipment between the dissimilar wireless network (such as WiFi that is used for voice, data and video communication and cellular network).The use of roam server makes it possible to make up WiFi and cellular network is used to be provided to the access of mobile communication equipment, and has utilized the VOIP network to be used in any possible local switch call.
Roam server is that a kind of telephone communication is handled and switching server, and it can not go offline " maintenance " current ongoing telephone communication, roams between WiFi access point and cellular network simultaneously, and does not lose current ongoing communication.For example, telephone communication can use roam server to carry out seamless switching between VOIP and cellular phone network.Nomadic server resources and VOIP interface and cellular network switch so that the switching between the network to be provided.This method makes it possible to any possible local on the VOIP network by WiFi or carry out the switching of telephone communication by cellular network.
In one aspect of the invention, provide a kind of method for communicating that is used for the mobile communication equipment between a plurality of dissimilar wireless networks, roamed.This method comprises first communication link of setting up between mobile communication equipment and the terminal destination device, and wherein first communication link comprises first wireless communication link between the wireless network of the mobile communication equipment and the first kind; When this signal strength signal intensity is lower than predetermined threshold, monitor the signal strength signal intensity of first wireless communication link; Set up the second communication link between interface server and the terminal destination device; The notice mobile communication equipment terminates in the transmission on first communication link; And redirect the second communication link from the interface server to the mobile communication equipment, set up second wireless communication link between the wireless network of the mobile communication equipment and second type thus.The wireless communication link of the first kind can comprise the WiFi communication link, and the wireless network of the first kind can comprise the WiFi Network Access Point.The wireless network of second type can comprise wireless cellular network.Setting up first communication link can comprise by the VOIP network and carry out route.Setting up first communication link can comprise by cellular network and carry out route.Setting up the second communication link can comprise by the VOIP network and carry out route.Setting up the second communication link can comprise by cellular network and carry out route.
This method can also comprise the connectivity state that is provided to interface server when mobile communication equipment is in first overlay area of the wireless network of the first kind by mobile communication equipment.This method can also comprise provides the route relevance to the mobile switching centre in the wireless network of second type, and wherein the route relevance is associated mobile communication equipment with interface server.This method can also comprise when described connectivity state and is routed to interface server according to the terminal communication (termination communication) that described route relevance will be used for mobile communication equipment from mobile switching centre when being effective, and on the wireless network of the first kind terminal communication is routed to mobile communication equipment from interface server.This method can also comprise: when the connectivity state did not offer interface server, router association was removed from mobile switching centre.This method can also comprise the registration of the mobile switching centre in the wireless network of second type mobile communication equipment when signal strength signal intensity is lower than predetermined threshold.This method can also comprise the second communication link of foundation and terminal destination device and transmit the second communication link to interface server.
In another aspect of the present invention, provide a kind of method for communicating that is used for the mobile communication equipment between a plurality of WiFi overlay area, roamed.This method comprises is associated mobile communication equipment and roam server, and wherein roam server is coupled to one or more WiFi access points; Set up the WiFi communication link between a mobile communication equipment and the WiFi access point; To roam server registration mobile communication equipment, comprise that the IP address that a WiFi access point is provided is to roam server; The communication path that is configured to mobile communication equipment by roam server according to the IP address and a WiFi communication link of a WiFi access point; Detect the overlay area that mobile communication equipment moves to the 2nd WiFi access point; Roam server registration mobile communication equipment to the IP address that comprises the 2nd WiFi access point; Set up the 2nd WiFi communication link between mobile communication equipment and the 2nd WiFi access point, and reconfigure communication path according to the IP address and the 2nd WiFi communication link of the 2nd WiFi access point.This method can also be included in the mobile switching centre place makes mobile communication equipment be associated with roam server.This method can also comprise provides the route relevance to the mobile switching centre in the cellular network, and wherein the route relevance makes mobile communication equipment be associated with interface server.This method can also comprise that the terminal communication that will be used for mobile communication equipment according to described route relevance is routed to interface server from mobile switching centre, and on communication path terminal communication is routed to mobile communication equipment from interface server.When mobile communication equipment is in the particular coverage of specific WiFi access point, can provide the connectivity state of mobile communication equipment to roam server registration mobile communication equipment.
In another aspect of the present invention, provide a kind of system that is used for the communication of the mobile communication equipment between a plurality of dissimilar wireless networks, roamed.This system comprises a plurality of dissimilar wireless networks, this mobile communication equipment is configured to insert described a plurality of wireless network, and comprise the interface server that is coupled to a plurality of wireless networks, wherein interface server keeps seamless communication link between mobile communication equipment and the terminal destination device when mobile communication equipment roams into from first wireless coverage area related with the wireless network of the first kind and the wireless network of second type is related second wireless coverage area, when first communication link between mobile communication equipment on the wireless network of the first kind and the terminal destination device is effective, interface server is configured to set up the second communication link on the wireless network of second type, wherein when first communication link is terminated the second communication link begun to set up be forwarded to interface server and subsequently the second communication link be routed to mobile communication equipment.First communication link can comprise first wireless communication link between the wireless network of the mobile communication equipment and the first kind.First wireless coverage area can be the WiFi overlay area, and first wireless communication link can be the WiFi communication link between mobile communication equipment and the WiFi access point.First communication link can comprise the routed path by the VOIP network.First communication link can comprise the routed path by cellular network.The second communication link can comprise second wireless communication link between the wireless network of the mobile communication equipment and second type.Second wireless coverage area can be a cellular coverage, and second wireless communication link can be the radio honeycomb communication link between mobile communication equipment and the cellular basestation.The second communication link can comprise the routed path by the VOIP network.The second communication link can comprise the routed path by cellular network.The wireless network of second type can comprise wireless cellular network.
In another aspect of the present invention, when mobile communication equipment when first wireless coverage area relevant with the wireless network of the first kind roams into second wireless coverage area relevant with the wireless network of second type, interface server keeps the seamless communication link between mobile communication equipment and the terminal destination device, when first communication link on the wireless network in the first kind between mobile communication equipment and the terminal destination device is effective, interface server is configured to be based upon the second communication link on the wireless network of second type, wherein when first communication link is terminated the second communication link begin to set up be forwarded to interface server and subsequently the second communication link be routed to mobile communication equipment.Interface server can comprise also that functional block is to keep current configuration and the state information relevant with first communication link between first network.First wireless coverage area can be the WiFi overlay area, and first communication link can be the WiFi communication link between mobile communication equipment and the WiFi access point.Interface server can comprise also that functional block is to keep current configuration and the state information relevant with the second communication link between second network.Interface server can also comprise provisioning server, to provide configuration information to mobile communication equipment.
Description of drawings
Fig. 1 shows the canonical system of interference networks, and wherein roam server is coupled to cellular network, Wireless IP network and PSTN.
Fig. 2 shows the simplification high level block diagram of an embodiment of mobile communication equipment.
At several view descriptions of accompanying drawing the present invention.Under the situation that suitable parts local and that only be equal in a more than accompanying drawing are disclosed and illustrate, identical reference number will be used to the parts of representing this class to be equal to.
Embodiment
The embodiment of roam server makes when can using VOIP to initiate telephone communication at the VOIP access point during such as the WiFi focus, and makes and can use cellular network initiation telephone communication when in cellular zone and outside the VOIP access point.When caller roams was outside VOIP access point scope, roam server was used for " maintenance " current telephone communication, and the switching from the VOIP access point to cellular network takes place simultaneously.Similarly, when caller roams during to the scope of VOIP access point, this moment, calling party was carried out telephone communication on cellular network, and roam server is used for " maintenance " current telephone communication switching from cellular network to the VOIP access point takes place simultaneously so.Roam server keeps in telephone communication that the line is busy or effectively, switches to another network from a network simultaneously.After finishing switching, roam server discharges telephone communication.
Fig. 1 shows the canonical system of interference networks, and wherein roam server 80 is coupled to cellular network, Wireless IP network and PSTN (PSTN) 60.Cellular network as shown in Figure 1 comprises mobile switching centre 20 that is coupled to public land mobile network 30 and a plurality of base stations 10 that are coupled to mobile switching centre 20.For simplicity, cellular network as shown in Figure 1 is the cellular network architecture of simplifying.For example, the cellular network among Fig. 1 comprises only single mobile switching centre, yet is to be understood that this cellular network comprises a plurality of mobile switching centres.In addition, the function that it will be obvious to those skilled in the art that mobile switching centre replacedly is incorporated in base station or any other the cellular network architecture, perhaps is attached in the roam server.Therefore, as used herein, term mobile switching centre refers to mobile switching centre or carries out any suitable equipment in the cellular network device structure of mobile switching centre's function.Fig. 1 shows four base stations 10 that are coupled to mobile switching centre 20.Replacedly, can be coupled to each mobile switching centre greater or less than four base stations.
Wireless IP network as shown in Figure 1 comprises a plurality of wireless IP access point 40 that is coupled to the Internet 50.The example of wireless IP access point includes but not limited to wireless or cable broadband final element, wireless or wire line MODEM, wireless or cable router and WiFi access point.
In this example, roam server 80 is coupled to PSTN 60 by soft handover 70.Soft handover 70 provides roam server 80 to the interface of legacy network such as PSTN.
Fig. 2 shows the simplification high level block diagram of an embodiment of mobile communication equipment 90.Mobile communication equipment 90 comprises WiFi part and honeycomb segment.Honeycomb segment uses GSM or CDMA, and the visit of communication network is provided by nearest base station 10.WiFi partly use voip client to bring in to initiate and terminate in the WiFi network on communicate by letter.Mobile communication equipment 90 is suitable for the communication of automaticallying switch between honeycomb and VOIP network.Mobile communication equipment 90 comprises the cellular communication module 93 that is coupled to cellular antenna 91, the WiFi communication module 94 that is coupled to WiFi antenna 92, audio/video amplifier 95, network switch unit 96, timer units 97, WiFi signal level strength monitor 98, microphone 100, loud speaker 99 and display monitor 101.Mobile communication equipment 90 is adapted to pass through the cellular communication module 93 that is coupled to cellular basestation 10 (Fig. 1) and/or sets up with keeping by the WiFi communication module 94 that is coupled to WiFi access point 40 (Fig. 1) and communicates by letter.Cellular communication module 93 comprises in addition and is suitable for transmitting a signal to cellular network and from the transceiver 102 of cellular network received signal.WiFi communication module 94 comprises in addition and is suitable for transmitting a signal to IP network and from the transceiver 103 of IP network received signal.Level according to the WiFi signal of launching from the WiFi access point that is detected, the calling that begins to set up by cellular communication module 83 can be switched to be handled by WiFi communication module 94, and perhaps the calling that begins to set up by WiFi communication module 94 can be switched to be handled by cellular communication module 93.
Return with reference to Fig. 1, when mobile telephone equipment 90 when a WiFi overlay area roams into another WiFi overlay area, perhaps when roaming outside the WiFi overlay area was still still in the cellular network overlay area, roam server 80 made it possible to seamlessly switch to another WAP (wireless access point) from a WAP (wireless access point).Roam server 80 comprises honeycomb interworking function (CIWF) piece 82, WiFi interworking function (WIWF) piece 84 and provisioning server 86.Roam server 80 and mobile switching centre 20 " closely " coupling or " loosely " coupling.When closely being coupled, roam server 80 and mobile switching centre 20 use the special-purpose or non-special purpose interface of mobile switching centre 20 to be coupling in together by Local Area Network or wide area network (WAN) or any other suitable interface.By this way, roam server 80 can communicate by this interface with mobile switching centre 20.When being coupled loosely, roam server 80 and mobile switching centre 20 use integrated services digital network (ISDNC) trunk line or are coupled by use soft handover or any other suitable interface.In this context, soft handover is variously defined and is Media Gateway Controller, Call Agent or defender, is used for the connection on the tie-point between control circuit and the packet network.
When mobile communication equipment 90 made a call in the WiFi overlay area, the WiFi communication link used roam server 80 to be established.This calling can be finished by roam server 80 at cellular network or on the VOIP network.If this calling is finished on cellular network, this calling is routed by any mobile switching centre of being coupled to roam server 80 so.If this calling is finished on the VOIP network, this calling uses Session Initiation Protocol or any other appropriate protocol to be routed such as H323 by service provider's soft handover 70 so.In other words, if mobile communication equipment 90 is positioned at the WiFi overlay area, first branch road (leg) of Hu Jiaoing can be routed on cellular network, VOIP network or PSTN at the remainder that is routed and calls out on the WiFi communication link so.
In operation, first call out by mobile communication equipment 90 by determine at first whether it sets up in the WiFi overlay area.Like this determine preferably by measure signal intensity or recently other standard of WiFi access point 40 make, and if signal strength signal intensity or other standard be higher than predetermined threshold, the WiFi communication link is established so.If it is unavailable that WiFi inserts, mobile communication equipment 90 foundation and the cellular communication link of base station 10 so recently.When mobile communication equipment 90 was at first set up the WiFi communication link, mobile communication equipment 90 was set up the communication link with provisioning server 86 on the WiFi communication link.The WiFi communication link comprises WiFi access point 40 and the Internet 50.Provisioning server 86 provides configuration information to mobile communication equipment 90, and this configuration information comprises the sign of its home nomadic server, and home nomadic server is a roam server 80 in this example.Mobile communication equipment 90 preferably uses the XML on the SSL to be used for communicating with provisioning server 86 on the Internet 50.
As long as mobile communication equipment 90 keeps the WiFi communication link with WAP (wireless access point) 40, no matter cellular network covers, then mobile communication equipment 90 is registered to its home nomadic server, is roam server 80 in this example.Roam server 80 then upgrades the current location of mobile communication equipment 90 in mobile switching centre 20.When the signal strength signal intensity of WiFi communication link or other standard die down when being lower than predetermined threshold mobile communication equipment 90 notice roam servers 80.In response, roam server 80 stops to send the position and upgrades to mobile switching centre 20.And mobile communication equipment 90 stops to send SIP registers to roam server 80, and mobile communication equipment 90 begins to register to nearest mobile switching centre.By this way, calling that initiate at mobile communication equipment 90 places or that stop is subsequently handled by mobile switching centre.Nearest mobile switching centre can be the home MSC of mobile communication equipment 90 or the other mobile switching centre in this cellular network, is called visited mobile switching center.
When first calling is still set up on the WiFi communication link, mobile communication equipment 90 is established to second of a terminal destination and calls out, this terminal destination is identical with current first terminal destination of setting up on the WiFi communication link of calling out, and sets up cellular communication link thus.If this cellular communication link is established by home MSC, second calling is routed to roam server 80 by the PoI between home MSC and the roam server 80 so.In response, roam server 80 determines whether first calling on the WiFi communication link is still underway.If then visit from the WiFi communication link and switch to cellular communication link.
Yet if cellular communication link is established on visited mobile switching center, visited mobile switching center is transmitted second and is called out the visitor nomadic server that is coupled to visited mobile switching center so.Visitor nomadic server be can not determine first state of calling out on the WiFi communication link, so visitor nomadic server switches to terminal destination with second calling.Meanwhile, home nomadic server (it before received about losing the notice of WiFi communication link from mobile communication equipment 90) is waited for second connection request of calling out that is used for being established from home MSC.Yet home nomadic server will not receive such connection request, because second calling is handled by visitor nomadic server.Equally, home nomadic server is released in first on the WiFi communication link and calls out, and second calls out by 90 maintenances of the mobile communication equipment on the cellular communication link.
In case cellular communication link is set up, do not attempt to set up another WiFi communication link in case reenter WiFi overlay area mobile communication equipment 90 so between mobile communication equipment 90 and nearest mobile switching centre.When mobile communication equipment 90 returned idle condition, mobile communication equipment 90 attempted to visit the WiFi communication link.
When mobile communication equipment when first overlay area roams into second overlay area, switch process is set up configuration according to the type of second overlay area and original call and is changed.Roaming into second overlay area can finish according to one of five different situations usually from first overlay area, and each situation comprises relevant switch process.
First kind of situation comprises that mobile communication equipment roams into the 2nd WiFi overlay area from a WiFi overlay area.The one WiFi overlay area is relevant with a WiFi access point, and the 2nd WiFi overlay area is relevant with the 2nd WiFi access point.Each WiFi access point comprises an IP address.When mobile communication equipment was arranged in a WiFi overlay area, mobile communication equipment was registered to its home nomadic server on a WiFi access point.Home nomadic server uses the home MSC of mobile communication equipment to upgrade the position of mobile communication equipment.For the calling that enters of pointing to mobile communication equipment, home MSC routes the call to home nomadic server based on latest position information.
When mobile communication equipment roamed into the 2nd WiFi overlay area, mobile communication equipment detected conversion.Mobile communication equipment obtains the IP address and sends the provisioning server of this IP address change to home nomadic server from the 2nd WiFi access point.Mobile communication equipment also send have this new IP address the SIP registration message to home nomadic server.In response, home nomadic server redirects any incoming calls to the IP address of the 2nd WiFi access point.Position by the mobile communication equipment that home MSC kept is still effective.
Second kind of situation comprises that mobile communication equipment 90 makes a call in a WiFi overlay area, on the VOIP network, set up and call out, and roam into the cellular coverage of supporting by the home MSC of mobile communication equipment 90 from a WiFi overlay area.In this case, mobile communication equipment 90 roams into non-WiFi overlay area from a WiFi overlay area.Call out when being initiated and setting up when first, the WiFi communication link is established between mobile communication equipment and first WAP (wireless access point) relevant with a WiFi overlay area.When mobile communication equipment was in a WiFi overlay area, mobile communication equipment was registered to its home nomadic server by a WiFi access point.First calling is routed such as the Internet by the VOIP network from first WAP (wireless access point).
Other standard of mobile communication equipment monitors signal strength or WiFi communication link.When signal strength signal intensity or other standard were lower than predetermined threshold, mobile communication equipment was to nearest mobile switching centre's registration, and it is the home MSC of mobile communication equipment in second kind of situation.Mobile communication equipment also is that second calling sends to home MSC with setup requests, and second calling and first is called out has identical terminal destination.Second calling is set up by home MSC, and second calls out the CIWF piece that is routed in the home nomadic server.The CIWF piece determines from the WIWF piece whether first calling is underway.If first calling is underway, then the CIWF piece sends and confirms that response message is to home MSC.Home MSC then sends confirms that response message is to mobile communication equipment.
In response to receiving the confirmation response message, mobile communication equipment stops at the Media Stream on the WiFi communication link and cuts off the power supply its WiFi part.The CIWF piece utilizes the registration of the mobile communication equipment in the IP address modification WIWF piece of CIWF piece then.The CIWF piece sends and to re-invite message to the WIWF piece, the IP address of presentation medium from the IP address switchover of first WAP (wireless access point) to the CIWF piece.The Media Stream relevant with first calling is redirected to the CIWF piece then, and wherein these medium are switched to home MSC then.With first call out relevant medium now with second call out relevant, wherein these medium now from the VOIP network flow to the WIWF piece to the CIWF piece to home MSC to mobile communication equipment.Conversion according to second kind of situation is finished now.If second calling is disconnected by mobile communication equipment subsequently, so Dui Ying call interruption process is supervised by the CIWF piece.If second calling is disconnected by the terminal destination device subsequently, so Dui Ying call interruption process is supervised by WIWF piece and CIWF piece.
The third situation comprises that mobile communication equipment makes a call in a WiFi overlay area, on cellular network, set up the rear end (back end) of calling out, and roam into the cellular coverage of supporting by the home MSC of mobile communication equipment from a WiFi overlay area.In this case, mobile communication equipment roams into non-WiFi overlay area from a WiFi overlay area.Call out when being initiated and setting up when first, the WiFi communication link is established between mobile communication equipment and first WAP (wireless access point) relevant with a WiFi overlay area.When mobile communication equipment was in a WiFi overlay area, mobile communication equipment was registered to its home nomadic server by a WiFi access point.First calls out from WAP (wireless access point) 40 and is routed such as mobile switching centre and PLMN or PSTN by cellular network.
Other standard of mobile communication equipment monitors signal strength or WiFi communication link.When signal strength signal intensity or other standard were lower than predetermined threshold, mobile communication equipment was to nearest mobile switching centre's registration, and it is the home MSC of mobile communication equipment in the third situation.Mobile communication equipment also is that second calling sends to home MSC with setup requests, and second calling and first is called out has identical terminal destination.Second calling is set up by home MSC, and second calls out the CIWF piece that is routed in the home nomadic server.The CIWF piece determines from the WIWF piece whether first calling is underway.If first calling is underway, then the CIWF piece sends and confirms that response message is to home MSC.Home MSC then sends confirms that response message is to mobile communication equipment.
In response to receiving the confirmation response message, mobile communication equipment stops at the Media Stream on the WiFi communication link and cuts off the power supply its WiFi part.The CIWF piece uses the registration of the mobile communication equipment in the IP address modification WIWF piece of CIWF piece then.The CIWF piece sends and to re-invite message to the WIWF piece, the IP address of presentation medium from the IP address switchover of first WAP (wireless access point) to the CIWF piece.The Media Stream relevant with first calling is redirected to the CIWF piece then, and wherein these medium are switched to home MSC then.With first call out relevant Media Stream now with second call out relevant, wherein this Media Stream now from cellular network point to the CIWF piece to home MSC to mobile communication equipment.Conversion according to the third situation is finished now.If second calling is disconnected by mobile communication equipment subsequently, so Dui Ying call interruption process is supervised by CIWF piece and home MSC.If second calling is disconnected by the terminal destination device subsequently, so Dui Ying call interruption process is supervised by the CIWF piece.
The 4th kind of situation comprises that mobile communication equipment makes a call in a WiFi overlay area, this overlay area is positioned at outside the cellular coverage of being supported by the home MSC of mobile communication equipment, on the VOIP network, set up the rear end of calling out, and roam into the cellular coverage of supporting by visited mobile switching center from a WiFi overlay area.In this case, mobile communication equipment roams into non-WiFi overlay area from a WiFi overlay area.Call out when being initiated and setting up when first, the WiFi communication link is established between mobile communication equipment and first WAP (wireless access point) relevant with a WiFi overlay area.When mobile communication equipment was in a WiFi overlay area, mobile communication equipment was registered to its home nomadic server by a WiFi access point.By this way, the position of the monitoring of the WIWF piece in home nomadic server mobile communication equipment.First calling is routed to first WAP (wireless access point) from mobile communication equipment by the WiFi communication link, to the WIWF piece of the visitor nomadic server relevant with visited mobile switching center, to the VOIP network.
Other standard of mobile communication equipment monitors signal strength or WiFi communication link.When signal strength signal intensity or other standard were lower than predetermined threshold, mobile communication equipment was to nearest mobile switching centre's registration, and it is a visited mobile switching center in the 4th kind of situation.Mobile communication equipment notifies WIWF block signal intensity or other standard in its home nomadic server to be lower than predetermined threshold.Mobile communication equipment also is that second calling sends to visited mobile switching center with setup requests, and second calling has and the identical terminal destination of first calling.Visited mobile switching center is transmitted this setup requests to the CIWF piece in the visitor nomadic server.In visitor nomadic server, the CIWF piece determines from the WIWF piece whether first calling is underway.Because mobile communication equipment itself is registered to its home nomadic server, and not to the visitor nomadic server registration, then the WIWF piece in the visitor nomadic server does not have ongoing first record of calling out.In response, visitor nomadic server is set up second calling on cellular network.Meanwhile, home nomadic server is removed first calling on the VOIP network.
The 5th kind of situation comprises that mobile communication equipment makes a call in a WiFi overlay area, this overlay area is positioned at outside the cellular coverage of being supported by the home MSC of mobile communication equipment, on cellular network, set up the rear end of calling out, and roam into the cellular coverage of supporting by visited mobile switching center from a WiFi overlay area.In this case, mobile communication equipment roams into non-WiFi overlay area from a WiFi overlay area.Call out when being initiated and setting up when first, the WiFi communication link is established between mobile communication equipment and first WAP (wireless access point) relevant with a WiFi access point.First calling is routed to first WAP (wireless access point) from mobile communication equipment by the WiFi communication link, to the CIWF piece of visit roam server, to visit mobile switching centre, arrives cellular network.
Other standard of mobile communication equipment monitors signal strength or WiFi communication link.When signal strength signal intensity or other standard were lower than predetermined threshold, mobile communication equipment was to nearest mobile switching centre's registration, and it is a visited mobile switching center in the 5th kind of situation.When mobile communication equipment was arranged in a WiFi overlay area, mobile communication equipment was by the home nomadic server registration of a WiFi access point to it.By this way, the position of the monitoring of the WIWF piece in home nomadic server mobile communication equipment.Mobile communication equipment is notified the WIWF piece in its home nomadic server, and signal strength signal intensity or other standard are lower than predetermined threshold.Mobile communication equipment also is that second calling sends to visited mobile switching center with setup requests, and second calling has and the identical terminal destination of first calling.Visited mobile switching center is transmitted this setup requests to the CIWF piece in the visitor nomadic server.In visitor nomadic server, the CIWF piece determines from the WIWF piece whether first calling is underway.Because mobile communication equipment itself is registered to its home nomadic server, and not to the visitor nomadic server registration, then the WIWF piece in the visitor nomadic server does not have ongoing first record of calling out.In response, visitor nomadic server is set up second calling on cellular network.Meanwhile, home nomadic server is removed first calling on a cellular network and a WiFi communication link.
Should be appreciated that five kinds of situations described above be not exhaustive or comprise that mobile communication equipment wherein can roam into all scenario of second overlay area from first overlay area under the support of roam server.Should be appreciated that other situations also are admissible.
In certain embodiments, roam server 80 also with the Internet on other roaming services communicate, to use the VOIP route and to finish calling.This server to server communication can be used for all-calls, even is used for honeycomb to cellular call.Under these circumstances, cellular telephone communication from the cellular telephone transmission that starts to suitable base station.From this base station, communication is routed to suitable roam server 80, and it is the roam server 80 of the most approaching reception base station 10 in certain embodiments.This roam server that starts 80 transmits the roam server 80 of this corresponding suitable base station 10 of the position of cellular telephone the most approaching and recipient of communicating by letter then on the internet.This receives roam server 80 and sends this this reception base station 10 of communicating by letter then, and it sends this recipient's that communicates by letter cell phone.By this way, the part of this transmission of only communicating by letter on cellular phone network is the beginning branch road from the cell phone that starts to suitable base station, and the cellular last branch road from suitable base station to the recipient.All the other mid portions of transmission are transmitted by the Internet between suitable roam server, and it allows this calling more effectively to finish than transmitting in a conventional manner on cellular network fully.For a person skilled in the art, obviously communication is being carried out on the both direction by this way so that finish calling between initiator and the recipient, beginning and decline route on cellular network of transmission, all the other mid portions of transmission are routed by the Internet 50 between roam server 80.
The present invention is described about specific embodiment, combines the convenient details of understanding structural principle of the present invention and operation.Like this, here, to the reference and the details thereof of specific embodiment and do not mean that the scope that limits its claims.It will be evident for a person skilled in the art that and to make modification and not deviate from aim of the present invention and scope the selected embodiment that is used to explain.
Claims (38)
1. method for communicating that is used to be provided at the mobile communication equipment of roaming between a plurality of dissimilar wireless networks, this method comprises:
A. set up first communication link between mobile communication equipment and the terminal destination device, wherein first communication link comprises first wireless communication link between the wireless network of the mobile communication equipment and the first kind;
B. monitor the signal strength signal intensity of first wireless communication link;
C. when this signal strength signal intensity is lower than predetermined threshold, set up the second communication link between interface server and the terminal destination device;
D. notify mobile communication equipment to terminate in transmission on first communication link; And
E. redirect the second communication link from the interface server to the mobile communication equipment, set up second wireless communication link between the wireless network of the mobile communication equipment and second type thus.
2. according to the process of claim 1 wherein that the wireless communication link of the first kind comprises the WiFi communication link, and the wireless network of the first kind can comprise the WiFi Network Access Point.
3. according to the method for claim 2, wherein the wireless network of second type comprises wireless cellular network.
4. according to the process of claim 1 wherein that setting up first communication link comprises by the VOIP network and carry out route.
5. according to the process of claim 1 wherein that setting up first communication link comprises by cellular network and carry out route.
6. according to the process of claim 1 wherein that setting up the second communication link comprises by the VOIP network and carry out route.
7. according to the process of claim 1 wherein that setting up the second communication link comprises by cellular network and carry out route.
8. according to the method for claim 1, also comprise the connectivity state that when mobile communication equipment is positioned at first overlay area of wireless network of the first kind, is provided to interface server by mobile communication equipment.
9. method according to Claim 8 also comprises providing the route relevance to the mobile switching centre in the wireless network of second type, and wherein said route relevance makes mobile communication equipment be associated with interface server.
10. according to the method for claim 9, comprise that also the terminal communication that will be used for mobile communication equipment according to described route relevance when being effective when described connectivity state is routed to interface server from mobile switching centre, and on the wireless network of the first kind, terminal communication is routed to mobile communication equipment from interface server.
11. the method according to claim 10 also comprises: when the connectivity state did not offer interface server, router association was removed from mobile switching centre.
12., also comprise the registration of the mobile switching centre in the wireless network of second type mobile communication equipment when signal strength signal intensity is lower than predetermined threshold according to the method for claim 1.
13., also comprise the second communication link of foundation and terminal destination device and transmit the second communication link to interface server according to the method for claim 12.
14. a method for communicating that is used to be provided at the mobile communication equipment of roaming between a plurality of WiFi overlay area, this method comprises:
Mobile communication equipment and roam server are associated, and wherein roam server is coupled to one or more WiFi access points;
B. set up the WiFi communication link between a mobile communication equipment and the WiFi access point;
C. to roam server registration mobile communication equipment, comprise that the IP address that a WiFi access point is provided is to roam server;
D. the communication path that is configured to mobile communication equipment by roam server according to the IP address and a WiFi communication link of a WiFi access point;
E. detect the overlay area that mobile communication equipment moves to the 2nd WiFi access point;
F. register mobile communication equipment to the roam server of the IP address that comprises the 2nd WiFi access point;
G. set up the 2nd WiFi communication link between mobile communication equipment and the 2nd WiFi access point; And
H. IP address and the 2nd WiFi communication link according to the 2nd WiFi access point reconfigures communication path.
15., also be included in the mobile switching centre place mobile communication equipment be associated with roam server according to the method for claim 14.
16. according to the method for claim 14, comprise also providing the route relevance that wherein the route relevance makes mobile communication equipment be associated with interface server to the mobile switching centre in the cellular network.
17. method according to claim 16, comprise that also the terminal communication that will be used for mobile communication equipment according to described route relevance is routed to interface server from mobile switching centre, and on communication path, terminal communication is routed to mobile communication equipment from interface server.
18., wherein when mobile communication equipment is in the particular coverage of specific WiFi access point, provide the connectivity state of mobile communication equipment to roam server registration mobile communication equipment according to the method for claim 14.
19. a system that is used to be provided at the communication of the mobile communication equipment of roaming between a plurality of dissimilar wireless networks, this system comprises:
A. many dissimilar wireless networks;
B. this mobile communication equipment is configured to insert described a plurality of wireless network; And
C. be coupled to the interface server of a plurality of wireless networks, wherein interface server keeps seamless communication link between mobile communication equipment and the terminal destination device when mobile communication equipment roams into from first wireless coverage area related with the wireless network of the first kind and the wireless network of second type is related second wireless coverage area, when first communication link between mobile communication equipment on the wireless network of the first kind and the terminal destination device is effective, interface server is configured to set up the second communication link on the wireless network of second type, wherein when first communication link is terminated the second communication link begun to set up be forwarded to interface server and subsequently the second communication link be routed to mobile communication equipment.
20. according to the system of claim 19, wherein first communication link comprises first wireless communication link between the wireless network of the mobile communication equipment and the first kind.
21. according to the system of claim 20, wherein first wireless coverage area comprises the WiFi overlay area, and first wireless communication link comprises the WiFi communication link between mobile communication equipment and the WiFi access point.
22. according to the system of claim 20, wherein first communication link comprises the routed path by the VOIP network.
23. according to the system of claim 20, wherein first communication link comprises the routed path by cellular network.
24. according to the system of claim 19, wherein the second communication link can comprise second wireless communication link between the wireless network of the mobile communication equipment and second type.
25. according to the system of claim 24, wherein second wireless coverage area comprises cellular coverage, and second wireless communication link comprises the radio honeycomb communication link between mobile communication equipment and the cellular basestation.
26. according to the system of claim 24, wherein the second communication link comprises the routed path by the VOIP network.
27. according to the system of claim 24, wherein the second communication link comprises the routed path by cellular network.
28. according to the system of claim 19, wherein the wireless network of second type comprises wireless cellular network.
29. interface server, be used for when mobile communication equipment when first wireless coverage area relevant with the wireless network of the first kind roams into second wireless coverage area relevant with the wireless network of second type, keep the seamless communication link between mobile communication equipment and the terminal destination device, when first communication link on the wireless network in the first kind between mobile communication equipment and the terminal destination device is effective, interface server is configured to be based upon the second communication link on the wireless network of second type, wherein when first communication link is terminated the second communication link begun to set up be forwarded to interface server and subsequently the second communication link be routed to mobile communication equipment.
30., comprise that also functional block is to keep current configuration and the state information relevant with first communication link between first network according to the interface server of claim 29.
31. according to the interface server of claim 30, wherein first wireless coverage area comprises the WiFi overlay area, and first communication link comprises the WiFi communication link between mobile communication equipment and the WiFi access point.
32., comprise that also functional block is to keep current configuration and the state information relevant with the second communication link between second network according to the interface server of claim 30.
33. according to the interface server of claim 32, also comprise provisioning server, be used for providing configuration information to mobile communication equipment.
34. according to the interface server of claim 29, wherein interface server is communicated by letter with mobile communication equipment by mobile switching centre.
35. according to the interface server of claim 34, wherein interface server closely is coupled to mobile switching centre by network.
36. according to the interface server of claim 34, wherein interface server is coupled to mobile switching centre loosely by one of trunk interface or soft handover.
37. according to the interface server of claim 34, wherein interface server is communicated by letter with mobile switching centre by the interface protocol of being set up by mobile switching centre.
38. one kind is used to provide the method for communicating between the mobile communication equipment, this method comprises:
A. the communication of route on first communication link between first mobile communication equipment and first cellular basestation wherein should communication be pointed to second communication equipment from first mobile communication equipment;
B. the communication of route on the second communication link between first cellular basestation and first controller equiment;
C. the communication of route on the third communication link between first controller equiment and second controller equiment, wherein third communication link comprises Internet protocol network;
D. the communication of route on the letter of the four-way between second controller equiment and second cellular basestation link; And
E. the communication of route on the letter of the five-way between second cellular basestation and second communication equipment link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510039302.4A CN104684039B (en) | 2005-01-14 | 2006-01-12 | Mobile telephone VOIP/cellular seamless roaming switching controller |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US64382905P | 2005-01-14 | 2005-01-14 | |
| US60/643,829 | 2005-01-14 | ||
| US11/330,675 | 2006-01-11 |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510039302.4A Division CN104684039B (en) | 2005-01-14 | 2006-01-12 | Mobile telephone VOIP/cellular seamless roaming switching controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101427599A true CN101427599A (en) | 2009-05-06 |
Family
ID=39758497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006800080781A Pending CN101427599A (en) | 2005-01-14 | 2006-01-12 | Mobile telephone VOIP/cellular seamless roaming switching controller |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5074210B2 (en) |
| CN (1) | CN101427599A (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011050536A1 (en) * | 2009-10-30 | 2011-05-05 | 华为技术有限公司 | Equipment and method for telephone service broadband communication |
| CN102739676A (en) * | 2012-06-29 | 2012-10-17 | 中兴通讯股份有限公司 | Speech call service realization method and device |
| CN103052126A (en) * | 2011-10-14 | 2013-04-17 | 联发科技（新加坡）私人有限公司 | Wireless communication system and wireless transmission method |
| WO2013097757A1 (en) * | 2011-12-28 | 2013-07-04 | 华为技术有限公司 | Data transmission method and apparatus |
| CN104105117A (en) * | 2014-07-09 | 2014-10-15 | 上海斐讯数据通信技术有限公司 | Method for achieving VoIP service in ad hoc network |
| WO2014187379A1 (en) * | 2013-12-31 | 2014-11-27 | 中兴通讯股份有限公司 | Method, network equipment, and user equipment for seamless switching between cellular and wifi networks |
| CN104349415A (en) * | 2013-08-01 | 2015-02-11 | 中国移动通信集团公司 | Data packet sending method and apparatus |
| CN106068026A (en) * | 2015-04-21 | 2016-11-02 | 国际商业机器公司 | For controlling the method and system of the transmission of voice communication |
| WO2017066982A1 (en) * | 2015-10-23 | 2017-04-27 | 陈银芳 | Indoor short distance handset communication method and system |
| CN106900021A (en) * | 2017-02-20 | 2017-06-27 | 惠州Tcl移动通信有限公司 | A kind of processing method and system of mobile terminal VoWiFi calls |
| CN106982457A (en) * | 2016-01-15 | 2017-07-25 | 佳能株式会社 | The control method and communication system of communicator, communicator |
| CN108235823A (en) * | 2016-10-12 | 2018-06-29 | 穆罕默德·哈马德·阿尔·哈瑞 | Agency is without roaming cellular |
| US11503526B2 (en) | 2020-09-15 | 2022-11-15 | International Business Machines Corporation | Predictive communication compensation |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2302869A3 (en) * | 2006-07-20 | 2013-05-22 | SanDisk Technologies Inc. | An improved audio visual player apparatus and system and method of content distribution using the same |
| JP5112161B2 (en) * | 2008-04-25 | 2013-01-09 | 京セラ株式会社 | COMMUNICATION SYSTEM, COMMUNICATION METHOD, RADIO COMMUNICATION TERMINAL, AND BASE STATION |
| US20100329206A1 (en) * | 2009-06-30 | 2010-12-30 | Thome Timothy A | Dual idle-traffic state of wireless communication device |
| KR101202938B1 (en) * | 2010-08-13 | 2012-11-19 | 엔에이치엔비즈니스플랫폼 주식회사 | System and method for determining geographical information based on collection of wireless access point information |
| JP6201214B2 (en) * | 2013-12-25 | 2017-09-27 | 株式会社Ｋｄｄｉ総合研究所 | Flight altitude control apparatus, flight altitude control method and program |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002026994A (en) * | 2000-05-31 | 2002-01-25 | Nec Corp | Wireless network system |
| KR101023557B1 (en) * | 2002-06-21 | 2011-03-21 | 톰슨 라이센싱 | Multimedia content delivery through wlan coverage area |
| US6850503B2 (en) * | 2002-08-06 | 2005-02-01 | Motorola, Inc. | Method and apparatus for effecting a handoff between two IP connections for time critical communications |
| WO2004057903A1 (en) * | 2002-12-19 | 2004-07-08 | Fujitsu Limited | Mobile node |
| JP2004320473A (en) * | 2003-04-16 | 2004-11-11 | Sharp Corp | Portable terminal |
| JP2004349976A (en) * | 2003-05-21 | 2004-12-09 | Mitsubishi Electric Corp | Radio communication system, radio resource managing device, and radio communication terminal |
| US8437368B2 (en) * | 2003-06-04 | 2013-05-07 | Nokia Corporation | System and method for handing over a call from a packet-switched network to a circuit-switched network |
-
2006
- 2006-01-12 CN CNA2006800080781A patent/CN101427599A/en active Pending
- 2006-01-12 JP JP2007551455A patent/JP5074210B2/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8599811B2 (en) | 2009-10-30 | 2013-12-03 | Huawei Technologies Co., Ltd. | Broadband communication apparatus and method for implementing telephone service |
| WO2011050536A1 (en) * | 2009-10-30 | 2011-05-05 | 华为技术有限公司 | Equipment and method for telephone service broadband communication |
| CN103052126A (en) * | 2011-10-14 | 2013-04-17 | 联发科技（新加坡）私人有限公司 | Wireless communication system and wireless transmission method |
| WO2013097757A1 (en) * | 2011-12-28 | 2013-07-04 | 华为技术有限公司 | Data transmission method and apparatus |
| US10075869B2 (en) | 2011-12-28 | 2018-09-11 | Huawei Technologies Co., Ltd. | Data transmission method and apparatus |
| CN102739676A (en) * | 2012-06-29 | 2012-10-17 | 中兴通讯股份有限公司 | Speech call service realization method and device |
| CN102739676B (en) * | 2012-06-29 | 2018-03-13 | 中兴通讯股份有限公司 | The implementation method and device of voice call service |
| CN104349415B (en) * | 2013-08-01 | 2018-01-30 | 中国移动通信集团公司 | The sending method and device of a kind of packet |
| CN104349415A (en) * | 2013-08-01 | 2015-02-11 | 中国移动通信集团公司 | Data packet sending method and apparatus |
| WO2014187379A1 (en) * | 2013-12-31 | 2014-11-27 | 中兴通讯股份有限公司 | Method, network equipment, and user equipment for seamless switching between cellular and wifi networks |
| CN104754661A (en) * | 2013-12-31 | 2015-07-01 | 中兴通讯股份有限公司 | Method for achieving seamless switching between cellular network and WiFi network, network device and user equipment |
| CN104105117A (en) * | 2014-07-09 | 2014-10-15 | 上海斐讯数据通信技术有限公司 | Method for achieving VoIP service in ad hoc network |
| CN104105117B (en) * | 2014-07-09 | 2018-04-06 | 上海斐讯数据通信技术有限公司 | A kind of implementation method for accessing VoIP service in ad hoc networks |
| CN106068026B (en) * | 2015-04-21 | 2019-04-26 | 国际商业机器公司 | For controlling the method and system of the transmission of voice communication |
| CN106068026A (en) * | 2015-04-21 | 2016-11-02 | 国际商业机器公司 | For controlling the method and system of the transmission of voice communication |
| US10609606B2 (en) | 2015-04-21 | 2020-03-31 | International Business Machines Corporation | Controlling a delivery of voice communications over a cellular data network or a wireless network based on user's profile |
| US11012899B2 (en) | 2015-04-21 | 2021-05-18 | International Business Machines Corporation | Controlling a delivery of voice communications over a cellular data network or a wireless network based on user's profile |
| WO2017066982A1 (en) * | 2015-10-23 | 2017-04-27 | 陈银芳 | Indoor short distance handset communication method and system |
| CN106982457A (en) * | 2016-01-15 | 2017-07-25 | 佳能株式会社 | The control method and communication system of communicator, communicator |
| CN106982457B (en) * | 2016-01-15 | 2020-06-16 | 佳能株式会社 | Communication device, control method of communication device, and communication system |
| CN108235823A (en) * | 2016-10-12 | 2018-06-29 | 穆罕默德·哈马德·阿尔·哈瑞 | Agency is without roaming cellular |
| CN106900021A (en) * | 2017-02-20 | 2017-06-27 | 惠州Tcl移动通信有限公司 | A kind of processing method and system of mobile terminal VoWiFi calls |
| WO2018149368A1 (en) * | 2017-02-20 | 2018-08-23 | Tcl通讯（宁波）有限公司 | Vowifi call processing method of mobile terminal, system, and mobile terminal |
| CN106900021B (en) * | 2017-02-20 | 2020-08-11 | 惠州Tcl移动通信有限公司 | VoWiFi call processing method and system for mobile terminal |
| US10798629B2 (en) | 2017-02-20 | 2020-10-06 | Tcl Communications (Ningbo) Co., Ltd. | VoWifi call processing method of mobile terminal, system, and mobile terminal |
| US11503526B2 (en) | 2020-09-15 | 2022-11-15 | International Business Machines Corporation | Predictive communication compensation |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008533761A (en) | 2008-08-21 |
| JP5074210B2 (en) | 2012-11-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101427599A (en) | Mobile telephone VOIP/cellular seamless roaming switching controller | |
| US8078164B2 (en) | Mobile telephone VOIP/cellular seamless roaming switching controller | |
| US8483126B2 (en) | Multi-network mobile communications systems and/or methods | |
| CN101040463B (en) | Hand-off system and method of dual mode mobile for connecting mobile communication system and wireless lan | |
| JP4221315B2 (en) | Compound radio service apparatus and method using wired / wireless communication system | |
| CN1795643B (en) | Extension of a local area phone system to a wide area network with handoff | |
| EP1523821B1 (en) | Registration of a wlan as a umts routing area for wlan-umts interworking | |
| US20180206166A1 (en) | Mobile telephone wifi/cellular seamless roaming switching controller | |
| US20060030354A1 (en) | Method for selectively connecting multi-mode mobile phone with mobile communication network or wireless network | |
| JP2007515142A (en) | Method and apparatus for independently and efficiently delivering services to a plurality of wireless interfaces and wireless devices capable of supporting a network infrastructure | |
| JP2013514704A (en) | Maintaining parallel registration in 2G / 3G networks and LTE to improve circuit-switched fallback setup time | |
| CN101305637A (en) | Telecommunications apparatus and method | |
| US8837441B2 (en) | Versatile system for WLAN/CDMA2000 interworking | |
| JP4001582B2 (en) | Private mobile communication service system and call processing method using the same | |
| KR101007333B1 (en) | complex wireless service device using wired or wireless communication systems | |
| CN101193386A (en) | Method of transferring a telephone communication from a wireless network to another, and corresponding dual-mode mobile telephone terminal | |
| CN100515132C (en) | Method and system for roaming between mobile network and wireless network | |
| EP1860905A1 (en) | Routing a communication session to a plurality of mobile terminals having the same identity | |
| KR20130097355A (en) | The method for processing a seamless handover using a multi packet transmission mode | |
| KR20070084070A (en) | Method and devices for supporting a flexible handling of connections towards a dual mode mobile station | |
| CN109219096A (en) | Wi-Fi and cellular communication switching method | |
| US20090117908A1 (en) | Mobile communications | |
| Sirovica et al. | Experiences with the development of a distributed radio port controller architecture | |
| US20110038366A1 (en) | Switching data streams between core networks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20090506 |