CN1613268A - Method, system and apparatus for providing WWAN services to a mobile station serviced by a WLAN - Google Patents

Method, system and apparatus for providing WWAN services to a mobile station serviced by a WLAN Download PDF

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Publication number
CN1613268A
CN1613268A CN03801934.5A CN03801934A CN1613268A CN 1613268 A CN1613268 A CN 1613268A CN 03801934 A CN03801934 A CN 03801934A CN 1613268 A CN1613268 A CN 1613268A
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China
Prior art keywords
wlan
mobile radio
radio station
wwan
msc
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Pending
Application number
CN03801934.5A
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Chinese (zh)
Inventor
朗贾玛尼·孙达尔
穆拉利·阿拉瓦穆丹
沙米姆·A·纳克维
普拉卡什·R·伊瓦尔
库马尔·K·维什瓦纳坦
古鲁杜特·乌彭德拉·帕伊
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Winphoria Networks Inc
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Winphoria Networks Inc
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Publication date
Priority claimed from US10/052,080 external-priority patent/US20030134650A1/en
Priority claimed from US10/052,119 external-priority patent/US20030133421A1/en
Priority claimed from US10/052,081 external-priority patent/US7200112B2/en
Priority claimed from US10/052,127 external-priority patent/US7149521B2/en
Application filed by Winphoria Networks Inc filed Critical Winphoria Networks Inc
Publication of CN1613268A publication Critical patent/CN1613268A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/02—Access restriction performed under specific conditions
    • H04W48/04—Access restriction performed under specific conditions based on user or terminal location or mobility data, e.g. moving direction, speed
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1073—Registration or de-registration
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/1066—Session management
    • H04L65/1101—Session protocols
    • H04L65/1104—Session initiation protocol [SIP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/18—Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • General Business, Economics & Management (AREA)
  • Multimedia (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Telephonic Communication Services (AREA)

Abstract

A method, system and apparatus for internetworking a WWAN and a WLAN are disclosed. More specifically, a method, system and appparatus for providing WWAN services to a mobile station serviced by a WLAN are disclosed. An MSC (302) is provisioned to serve a WLAN. The MSC (302) that serves the WLAN receives WWAN messages that provide a WWAN service. The MSC (302) forms SIP messages using the received WWAN messages and delivers the SIP messages to the WLAN via an IP link (304). The WLAN delivers the SIP messages to the mobile station via a WLAN air interface protocol. Under one embodiment, the WWAN service is a Short Message Service (SMS). Under another embodiment, the WWAN service is a Message Wait Notification (MWN). Under another embodiment, an MSC (302) that services the WLAN and an MSC (302) servicing the WWAN cooperate to provide TFO call services between an mobile station operating in the WLAN and a mobile station operating in the WWAN.

Description

Mobile radio station to the WLAN service provides WWAN service method, system and equipment
The cross reference of related application
The application requires in application on January 2nd, 2002, and provisional application number is 60/345800, and name is called the priority of the provisional application of " being used for the internet interconnected method of voice between local and the wide area mobile radio network ".
Technical field
The present invention relates to internet interconnected between wireless lan (wlan) and the wide area mobile radio network.
Background technology
Adopt the user of wireless technology to increase with bigger number day by day.Because the speed plan of very attractive has stimulated this trend more, this plan is taken telephone charges to most of people can accept in the society level.The phenomenon that user's phone need almost completely rely on mobile phone is more general.Yet in office or company's environment, mobile phone is because some reasons can not surpass company's phone of Wireline, and reason outstanding in these reasons is as follows:
In office block,, cause the problem of mobile management and speech quality from the weak R/F signal of Wide Area Network foundation structure.
The availability of special-purpose PBX feature in the Work Telephone system, for example abbreviated dialing provides the strong inducement that continues use company phone scheme.
Present situation is, people use two kinds of different telephone systems, and are a kind of in wireless wide area network, and another kind of in the company place, it is the Wireline telephone system, has caused a plurality of mobile phones, voice mail and addressing mechanism.
Parallel with these development, WLAN more and more widely is used for wireless data application.In this network, rationally bandwidth can be used for company's wireless client, for example, in the 802.11bWLAN network, can be used for wireless client up to 11Mbps.This bandwidth enough is used for voice-bearer.In addition, the widely-used price that reduces this technology of WLAN technology.
Fig. 1 shows exemplary radio wide area network (WWAN) 100 (also as the wide area mobile wireless network and known).WWAN100 comprises a plurality of remote units (mobile phone) 102, and itself and one or more system that is called base station transceiver system (BTS) 104 based on antenna carry out radio contact, and base station transceiver system 104 sends wireless signals to mobile phone and from its reception wireless signal.A plurality of BTS communicate by letter with the controller that is called base station controller (BSC) 106 through fixed link 108 by using various protocols and technology (for example TDM, IP etc.).A plurality of BSC be called the switch communication that is connected mobile switching centre (MSC) 110, that be provided to wide area switched telephone (WSTN) 111.WSTN comprises signaling link 113, for example SS7 link, and public switch telephone network (PSTN) 112.Shown in MSC115, MSC can comprise controlling platform 117, is used to control the message on the signaling link, and this message can transmit according to various protocols, IOS for example, GSM A interface, IS41, GSM MAP etc.MSC115 can also comprise media gateway 119, and itself and controlling platform are cooperated, and are used to control the bearer circuit of PSTN112.Some existing MSC, for example MSC115 also can communicate on IP network (for example IP network 120).
MSC and coupled BSC and BTS define an overlay area jointly, in this zone, allow mobile phone to receive or the transmission call.From PSTN the incoming call of cell phone is arrived gateway MSC, for example 115, gateway MSC routes the call to and is called the MSC110 that serve MSC then, the reception mobile phone is just roamed in its coverage at present.Be routed to the service MS109 of the mobile phone that starts from the outgoing call of mobile phone, then therefrom, call out or be routed to the service MSC that receives cell phone, or be routed to WSTN through gateway MSC through gateway MSC, therefrom, WSTN routes the call to (Wireline) mobile phone.
In some configuration, gateway can be with realizing by identical physical entity with service MSC function.Allow the user in the overlay area, to roam, and when roaming, the different entities cooperation of WWAN, the wireless connections of maintenance mobile phone when guaranteeing to roam.Mobile phone can roam into the overlay area of another group BTS/BSC/MSC from the overlay area of one group of BTS/BSC/MSC.Last group of BTS/BSC/MSC is called as the source, and the back is called as target entity for one group.Stipulated that a series of process coordinates mobile phone switching to target entity from the source of WWAN.As the result of handoff procedure, the renewal of mobile phone location takes place.This sends location update message by mobile phone and realizes to MSC, this MSC use standard industry agreement, and IS-41 for example, GSM-MAP etc. route the message to the registration office that is called attaching position register (HLR) 114.
Different air interface technologies has been used in communication between mobile phone 102 and BTS104.These technology comprise code division multiple access (CDMA), global system for mobile communications (GSM), personal digital cellular (PDC) etc., and the various expansions and the enhancing of these technology, CDMA2000 for example, general mobile land system (UMTS), international mobile phone IMT-2000 etc.The above-mentioned known entities of all these network using is though use different terms, structure to receive and dispatch call.All these all are known for those of ordinary skills.
Fig. 2 shows demonstration WLAN (WLAN) 200.WLAN comprises one or more geographic areas (sub-district), is called basic service sets (BSS) 202.Each sub-district is by the system's control that is called access point (AP) 204.Usually, WLAN comprises some BSS, and each all has its AP that links to each other.AP uses the ethernet technology in the 802.x WLAN technology to link to each other with Wireline network 206 usually.AP communicates by letter with company router two 08, the business of 208 common routes in company's net or outside company nets.Allow wireless data client 210 in regulation BSS, to roam, and pass the BSS of regulation by the client according to known procedure from an AP to the switching mode of adjacent AP.In typical wlan implementation, physical layer is used multiple technologies, and for example in 802.11WLAN implemented, physical layer can be used the frequency hopping spread spectrum in infrared ray, the 2.4GHz frequency range, or the Direct swquence spread spectrum in the 2.4GHz frequency range.Media access layer (MAC) is also carried out for example packet segmentation storage, additional functions such as repeating transmission and affirmation except that carrying out typical functions.
The MAC layer is supported two kinds of basic access mechanism: distributed coordination function (DCF) and point coordination function (PCF).In DCF, basic access mechanism is that the carrier wave that the band conflict is avoided detects multiple access (CSMA/CA) mechanism.Typical example is an Ethernet, and it is the CSMA with collision detection (CD) mechanism.In the CSMA agreement, want the client who sends to detect medium, and if find that medium are busy, that is, used then delayed delivery by some other client; Otherwise allow its transmission.Always might two clients detect the medium free time and begin transmission, thereby lead to a conflict; Therefore, in this agreement, conflict is avoided and is detected extremely important.For example, 802.11WLAN uses conflict to avoid and testing mechanism.Want 802.11 clients that send to detect medium, if find that medium are busy, then delayed delivery; Otherwise begin to send.Receiver detects reception to correct transmission and (through cyclic redundancy check (CRC)-CRC), if find to receive satisfied, then beams back affirmation.The reception of confirming represents that to transmitter transmission is correctly received.If do not receive the confirmation, transmitter then can be retransmitted, until receiving the confirmation or till transmitter decision abandons sending.For further reducing the possibility of conflict, some implements also to use the virtual carrier testing mechanism.In this scheme, want the client who sends at first its intention to be signaled the purpose receiver by sending request transmission (RTS).Receiver is effective " reservation " medium of transmitter and receiver with clear to send (CTS) response.Transmitter can send predetermined information now.
In these examples, when the client who wants to send finds that medium do, client's delayed delivery.Therefore the client is forced to retry to understand the state of medium.In the standard method of head it off, use " index reduces process (exponential back off procedure) " to determine the frequency of retry.This method relates to be selected random number and waited for many time slots before retry.If it is busy that retry is found medium once more, then number of retries is the index minimizing.After this deferring procedure also is used in and successfully sends and after each repeating transmission.
When the client wants to visit BSS (after opening power or when entering BSS for the first time), needn't obtain synchronizing information from the AP of control BSS.Stipulated that two kinds of methods are used for the client and obtain this information.In the drive sweep method, the client waits for from AP and receives " beacon frame " that this beacon frame is regularly sent by AP.Beacon frame comprises synchronizing information.In the second approach, be called as active scan, the client sends exploration to AP, and waits for the response to this exploration.In case this website is found AP, then needs its authentication.This requires between AP and client exchange message to set up client's authentication.In case finish authentication process, the client begins to exchange the relevant treatment about the information of Customer Location and BSS capacity between client and AP.When finishing these relevant treatment, the client is ready to receive or send data.
In the PCF access mechanism, when detecting medium in the given time span that is called single-point interFrameGap (PIFS) when idle, AP obtains the control to these medium.The AP role of coordinator that bears the responsibility then, all websites that the beginning poll is enumerated in " polling list " safeguarded by AP.When being polled to, allow website to send.AP supports that the time cycle of PCF pattern is uncompetitive, thereby can provide more good opportunity for speech business.AP must replace DCF and PCF cycle.All these all are known for those of ordinary skills.
Therefore, need a kind of method that is used for internet interconnected WLAN and radio wide area network (WWAN), between two networks, having the voice communication of complete mobile management, and keep the PBX feature in the WWAN environment.
Summary of the invention
The invention provides a kind of method, system and equipment are used for mobile radio station and detect and select WLAN (WLAN) or wide area mobile wireless network (WWAN).Except other, this helps internet interconnected between WLAN and the WWAN, and the use of the multi-mode mobile station that communicates of convenient selectable and WLAN or WWAN.
According to an aspect of the present invention, mobile radio station can communicate according to the radio wide area network interface protocol according to 802.xx WLAN air interface protocol or through the WWAN logic through the WLAN logic.Mobile radio station detects the RF energy in the 802.xx frequency spectrum, and in response to energy measuring, determines whether to serve the 802.xx WLAN of mobile radio station by carrying out scan operation.If the 802.xxWLAN that can serve mobile radio station is arranged, mobile radio station is selected the WLAN logic, thereby mobile radio station can communicate through air interface.
According to another aspect of the present invention, WWAN has and is identified in the information that WLAN can operate in which zone, and WWAN provides at least one subclass of this type of information to mobile radio station.Mobile radio station uses this type of regional identifying information to determine whether to carry out the operation of RF energy measuring.
According to another aspect of the present invention, regional identifying information is sub-district ID, and the sub-district id information of mobile radio station operation just within it and the sub-district ID that provides are relatively.
According to a further aspect in the invention, regional identifying information is geo-location satellite (GPS) information, and mobile radio station is determined the gps coordinate of self, and itself and the GPS information that provides are compared.
According to a further aspect in the invention, mobile radio station with RF energy value and threshold ratio, and mobile radio station detects the RF energy of WWAN, and with the described RF energy of WWAN and predetermined value relatively.Mobile radio station uses the comparative result of RF energy value and corresponding threshold value to select to communicate by letter with 802.xxWLAN or communicate by letter with WWAN.
According to a further aspect in the invention, regional identifying information comprises that identification removes the information of other WLAN the mobile radio station service program use.
According to a further aspect in the invention, the information of identification WLAN comprises the information of discerning the WLAN of company that accepts the mobile radio station service.
According to a further aspect in the invention, provide area information through SMS message to mobile radio station from WWAN.
The invention provides a kind of method, system and equipment are used for providing the mobile management of the mobile radio station of WLAN and WWAN environment.
According to an aspect of the present invention, provide a kind of mobile switching centre (MSC), as the service MSC of WLAN.Mobile radio station detects the RF energy of WLAN, and confirms that it becomes the ability of WLAN a member.In response, mobile radio station sends the service MSC of register requirement to WLAN, and in response, the service MSC of WLAN makes WWAN identify mobile radio station and no longer served by previous MSC to the service MSC of WLAN registration and this mobile radio station.Mobile radio station is communicated by letter with the entity outside the WLAN by communicating by letter with WLAN to come through the WLAN agreement, and WLAN communicates by letter with WWAN through the service MSC of WLAN.
In another aspect of this invention, mobile radio station sends register requirement by send the SIP registration message through the WLAN air interface protocol on WLAN, and WLAN transmits the MSC of this register requirement to serving WLAN.
In another aspect of this invention, mobile radio station detects the RF energy of WLAN, and confirms that it becomes the ability of WLAN a member, and mobile radio station is just participating in using the calling of WWAN air interface protocol simultaneously.In response, send the source MSC of a message to this calling of service, indication is wished to switch.Source MSC analyzes this message, will oneself be established as anchor MSC, and sets up and serve the communication channel of the target MSC of detected WLAN.Mobile radio station begins to communicate by letter with WLAN through the WLAN air interface.WLAN communicates by letter the target MSC of forwards to serving WLAN, these anchor MSC that communicate by letter of target MSC relaying through IP.
In another aspect of this invention, mobile radio station determines that it should communicate through WWAN air interface protocol rather than WLAN air interface protocol.This mobile radio station sends a request for registration to WWAN through base station controller (BSC) with corresponding to the MSC of the parked position of mobile radio station.Corresponding MSC makes WWAN identify mobile radio station to corresponding MSC registration, and this mobile radio station is no longer by the previous MSC service of serving this mobile radio station when it communicates according to the WLAN air interface protocol.
In another aspect of this invention, when mobile radio station was just participating in calling under the WLAN air interface protocol, mobile radio station determined that it should communicate according to the WWAN air interface protocol.In response, send a message to the source MSC of this calling of service, indicative of desired is switched.Source MSC analyzes this message, will self be established as anchor MSC, and set up and the service mobile radio station the communication channel of target MSC of resident WWAN geographic area.Mobile radio station begins to communicate by letter with WWAN, these anchor MSC that communicate by letter of target MSC relaying.
In another aspect of this invention, the sub-district ID of the MSC WWAN geographic area of mobile radio station notification service WLAN, source MSC use sub-district id information is set up the communication channel with target MSC.
In another aspect of this invention, when mobile radio station was just participating in calling under the WLAN air interface protocol, mobile radio station determined that it should communicate according to the WWAN air interface protocol.In response, send a message to source MSC, to ask an interim local telephone number (TLDN).Source MSC provides TLDN to mobile radio station.Source MSC keeps the called party of this calling online, and mobile radio station asks that this TLDN call out as the called party.WWAN couples together mobile radio station to call out with this TLDN and is connected, thereby continues to call out.
The invention provides a kind of method, system and equipment are used to provide WWAN to serve to the mobile radio station by the WLAN service.
According to an aspect of the present invention, provide MSC to be used for serving WLAN.The MSC of serving WLAN receives provides WWAN the WWAN message of service.MSC uses the WWAN message that receives to form sip message, and transmits this sip message to WLAN through the IP link.WLAN transmits this sip message to mobile radio station through the WLAN air interface protocol.
According to a further aspect in the invention, WWAN service is Short Message Service (SMS), and WWAN comprises the SMS center, is used for transmitting on WWAN SMS message.MSC forms sip invite message with the SMS payload, and transmits described sip invite message to WLAN.
According to a further aspect in the invention, the WWAN service is MWN (MWN), and WWAN provides MWN message to WWAN.MSC forms sip invite message with MWN information, and transmits described sip message to WLAN.
According to a further aspect in the invention, the MSC cooperation of the MSC of serving WLAN and service WWAN, thereby for providing TFO call service between mobile radio station of in WLAN, operating and the mobile radio station of in WWAN, operating.
The invention provides a kind of method, system and equipment are used for internet interconnected mobile radio station, thereby operate in the WWAN environment and have in the WLAN environment of PBX service.
According to an aspect of the present invention, provide a kind of switch of communicating by letter with WLAN and communicating by letter with PBX through the PBX interface through IP communication.This switch receives mobile station communicate through WLAN.This switch is converted to form with the PBX interface compatibility with mobile station communicate, and the communication of conversion is forwarded to PBX.PBX receives the also communication of treatment conversion.
According to a further aspect in the invention, this switch further is provided for WWAN and communicates by letter, and this switch analysis mobile station communicate, and definite mailing address is the entity outside the PBX territory.In response, switch is from the MSC request TLDN of service WWAN.As the response that receives TLDN from MSC, switch sends a message to PBX, and mobile radio station calling and appointment TLDN are connected.PBX calls out mobile radio station to be connected to and specifies TLDN.
According to another aspect of the present invention, mobile radio station can be roamed during calling out, and switches to the WWAN air interface protocol.Mobile radio station reconnects to this calling by the TLDN of designated call.
According to another aspect of the present invention, this reconnects and need not user intervention and just can carry out automatically.
Description of drawings
In the accompanying drawings,
Fig. 1 shows prior art radio wide area network (WWAN);
Fig. 2 shows prior art WLAN (WLAN);
Fig. 3 shows the internet interconnection wireless network according to certain embodiments of the invention;
Fig. 4 shows the multi-mode mobile station that whether has WLAN according to the detection of certain embodiments of the invention;
Fig. 5 shows the multi-mode mobile station from grand network reception sub-district id information according to certain embodiments of the invention, and this grand Network Recognition mobile radio station can detect the relevant range of WLAN;
Fig. 6 shows the multi-mode mobile station from grand network reception sub-district id information according to certain embodiments of the invention, the public and WLAN of other companies of this grand Network Recognition;
Fig. 7 shows the multi-mode mobile station according to certain embodiments of the invention;
Fig. 8 shows the internet interconnection wireless network according to certain embodiments of the invention, and wherein, mobile radio station can roam to this network from the WLAN environment, and/or the service switching of the mobile radio station from WLAN to WWAN takes place;
Fig. 9 shows the mobile management logic according to certain embodiments of the invention;
Figure 10-11 shows the concrete mobile management logic according to certain embodiments of the invention;
Figure 12 shows the mobile management logic according to certain embodiments of the invention;
Figure 13-14 shows the concrete mobile management logic according to certain embodiments of the invention;
Figure 15 shows the internet interconnection wireless network according to certain embodiments of the invention, and wherein, mobile radio station may roam to this network from the WWAN environment, and/or the service switching of the mobile radio station from WWAN to WLAN takes place;
Figure 16 shows the mobile management logic according to certain embodiments of the invention;
Figure 17-18 shows the concrete mobile management logic according to certain embodiments of the invention;
Figure 19 shows the mobile management logic according to certain embodiments of the invention;
Figure 20-21 shows the concrete mobile management logic according to certain embodiments of the invention;
Figure 22 show according to certain embodiments of the invention be used for SMS is provided the logic to the mobile radio station that operates in the WLAN environment;
Figure 23 show according to certain embodiments of the invention be used for provide MWN to serve logic to the mobile radio station that operates in the WLAN environment;
Figure 24-25 shows the logic that is used to handle intracompany calling according to certain embodiments of the invention;
Figure 26-27 shows the logic that processing company calls out to PSTN that is used for according to certain embodiments of the invention;
Figure 28 shows the logic that processing company arrives grand calling network that is used for according to certain embodiments of the invention;
Figure 29 shows the internet interconnection wireless network according to certain embodiments of the invention;
Figure 30 shows the mobile management logic according to certain embodiments of the invention; And
Figure 31 shows the internet interconnection wireless network according to certain embodiments of the invention, wherein integrated PBX service.
Embodiment
The preferred embodiments of the present invention provide the voice between WLAN and the WWAN internet interconnected, and have effectively unified this two kinds of diverse technology.Therefore, the user need not to stand the problem relevant with a plurality of mobile phones, address and Voice Mailbox.As described below, in certain embodiments, gateway MSC (GMSC) switch that has the WWAN of some related amendments of WLAN client provides essential logic for this unification.In fact, GMSC is used as the service MSC of WLAN speech business simultaneously.
Fig. 3 shows one exemplary embodiment of the present invention.The WWAN assembly with as above described in conjunction with Figure 1 identical, except MSC302 comprises some new discussed below internet interconnected logics,, make it be used as a grand network 300 to handle the unification of WLAN and WWAN.Except other, MSC302 is as the service MSC of WLAN.WLAN effectively is connected by IP link 304 with WWAN now.The IP interface of carrying from the company to MSC302 on this group IP link 304 to WLAN and speech business and relevant signaling and control messages from WLAN.Wlan component is also with above-mentioned identical, except mobile phone or wireless data client 310 comprise the multi-mode device that it can operate in WLAN or the WWAN environment, and is as described below.
MSC302 allows to finish the call between the client of WWAN100 and WLAN200.WLAN client can freely roam in the WLAN environment, also can roam in the WWAN environment, and need not to require the user that any manual intervention is arranged.Speech business from WLAN to MSC302 can be used any known speech coding technology.For cdma network, can use to strengthen variable-rate codec (EVRC), for the GSM network, can use adaptive multi-rate (AMR) coding.Voice bearer after will encoding on the IP link 304 is the RTP/UDP/IP grouping then.Control from WLAN200 to MSC302 and signaling message also are carried on the IP link 304.In certain embodiments, with the form carrying control and the signaling message of session initiation protocol (SIP) message, and has the additional information element (IE) that is used to control the mobile phone switching that is described to a part of the present invention.
By using the multi-mode mobile phone 310 to operate in WLAN or the WWAN environment, make that in certain embodiments voice are internet interconnectedly to become easy.WLAN and WWAN (multi-mode) phone 310 can both determine automatically at any time whether it can use WLAN to insert, but not grand network carriers (GSM, CDMA, UMTS, TDMA, PDC etc.).
Can infer whether there is WLAN by in allowance 802.1b/a frequency spectrum (for 802.11b/802.11g is the 2.4GHz frequency range, is the 5GHz frequency range for 802.11a), detecting the RF energy.As shown in Figure 4, mobile radio station 310 can begin the detection 402 of RF energy in relevant frequency spectrum.After the energy measuring of success, mobile radio station can detect available WLAN200 whether occurs by one of two kinds of methods:
Drive sweep: the beacon frame of mobile radio station 310 search 802.11x AP 204 broadcasting
Active scan: mobile radio station 310 sends the probe request frame, and waits for the probe response frame from AP204.
As the part of beacon frame or probe response, AP sends the SSID (1-32 eight hyte length character strings) of sign AP204.Mobile radio station 310 with this SSID and ssid list (may comprise scope) relatively, and if coupling, infer that then WLAN200 is the active block that can obtain to insert.Mobile radio station 310 passes through authentication process after successful SSID coupling.If the authentication success, then mobile radio station is proceeded relevant treatment, and whereby, mobile radio station adds wlan network as effective and legitimate client (node).
Mobile radio station 310 is a priori, provides effective ssid list and SSID scope.SSID has relatively avoided mobile radio station to enter it never may be by the authentication or the relevant treatment of the operation wlan network of authentication.For example, suppose that mobile radio station MS1 belongs to use SSID En1SSID1The E1 of company.When mobile radio station entered the E1 of company, the beacon search success SSID coupling further takes place, thereby mobile radio station was carried out authentication process.When the authentication success, it proceeds to relevant treatment, and obtains the access to the WLAN service.When same mobile radio station MS1 enters another also effective by chance 802.11WLAN but has the company of different SSID (for example En2SSID2), SSID in this SSID and the mobile radio station does not match, thereby mobile radio station can not attempt to begin authentication (thinking that therefore this WLAN service is unavailable).
In the example of cdma network, providing of SSID can provide program (over the air provisioning procedures) (OTASP/OTAPA) from grand network 300 based on aerial by using in mobile radio station, or also is the same in GSM/UMTS network (use Short Message Service).For preventing the eavesdropping of SSID in the grand network, can use the key identical (A-key or SSD) to encrypt this message self with in mobile radio station, being used for grand network authentication/encryption.
Cycle detection and find that subsequently the existence of WLAN has influenced the battery life of mobile radio station.Expectation minimization battery consumption, a kind of mode that realizes this effect in multimode phone are minimized detection or the number of times of finding trial, if simultaneously available, the ability of the WLAN of company is jumped in maintenance.For using multi-mode mobile station 310 can reduce by two kinds of observations of detection/discovery number of attempt:
The number of regions that can be used for company's WLAN service of user is limited; For example, corporate user may only limit to just can visit its WLAN service in its company position.
Multi-mode mobile station is always attempted the connection of maintenance and grand network (CDMA, GSM, UMTS etc.).For example, the CDMA phone that detects effective IS-95/IS-2000 signal is always attempted to register to the IS-41 core network; The GSM/UMTS phone that detects the GSM/UMTS useful signal is always attempted to register to the GSM-MAP core network.As registering result, the sub-district ID that grand network and mobile radio station are all known represents the current location of mobile radio station.
By getting in touch above two facts, grand network 300 can be determined to move and accounts for 310 and when should attempt to detect or find the WLAN of company.As shown in Figure 5, in a preferred embodiment of the invention, grand network 300 can send and relates to 502 information that detect or find to handle to mobile radio station 310 when successfully realizing network registry.This information comprises grand network cell ID, and mobile radio station 310 should attempt to detect or find the 402 ' WLAN of company in this sub-district.This sub-district ID is an overall measurement, therefore can cover very large zone (in the nearly several sq. mi of rural area/rural areas) or very little zone (the nearly hundreds of square meter in intensive urban area).
Demonstration as method of the present invention shows, considers a CDMA (IS-95) user, and he is positioned at the Massachusetts to tell this Berli of gram (corporate user of 802.11 services in the Tewksbury, mansion W Mass).When this user entered the CDMA exchange area of telling this Berli of gram, its IS-95 phone began network registry.As the part of this registration, grand network 300 determines that the user may enter the overlay area of the WLAN service in the mansion W; That is, grand network with user and mansion W all the information in telling this Berli exchange area of gram shut away mutually.Grand network provides the mobile radio station 310 of the residing 502 sub-district id informations of W mansion to the user and the triggering that should begin the WLAN detection now.When receiving this information, mobile radio station begins to scan 802.11 beacons, particularly the coupling of the ssid list of the AP in searching and the mansion W.This detection enters BSS202 until the user just can be successful.When success when AP204 detects beacon, user's mobile radio station 310 is cancelled the registration of grand network 300, and to the service MSC of WLAN200 registration.When mobile radio station was roamed in WLAN200, it continued to detect the RF energy intensity of WWAN100 and WLAN200.WLAN RF energy intensity is lower than certain threshold value and WWAN intensity is higher than threshold value if detect, and then it begins the registration process to grand (WWAN) network 100.
As previously mentioned, the sub-district ID of grand network 300 can specify very large geographic area.If sub-district ID is relevant with little geographic area, the chance that then minimizes the power consumption in the mobile radio station has increased, and only limits to less geographic area because detect or find to handle.In certain embodiments, can use the mobile radio station that is integrated with GPS (geo-location satellite) effective information.Because GPS information is more accurate than the sub-district id information, so will further reducing, the use of GPS information need begin to detect or find the geographic area of handling, thus the power consumption of saving mobile radio station more.
The sub-district ID tabulation that is offered mobile radio station by grand network can comprise not only that the user can roam company position into, also potential other " companies " or " public domain " of comprising.For example, grand Internet Service Provider may have roaming agreement with the LAN of public company in for example dining room or hotel.With reference to figure 6, as user 310 during, not only receive the 602 sub-district ID at user company place, but also the sub-district ID that receives the public LAN that is positioned at identical exchange area is useful to grand network registry.
Use standard Short Message Service (SMS) or by using logic based on SCP (SCP), or act on behalf of the transmission that the HLR entity is realized positional information or the more direct instruction of WLAN beacon is searched in beginning (or stopping) mobile radio station 310 in by revising HLR or use.(referring to, the example of acting on behalf of HLR of U.S. Patent application 09/845703 for example, it is in application on April 30 calendar year 2001, at this in conjunction with its totality as a reference.) when mobile radio station 310 when MSC/HLR registers, grand network can be used as the SMS (Short Message Service) with particular type and sends sub-district ID tabulation, beacon search/halt instruction etc.After to the success response of upgrading by the position of mobile radio station 310 beginnings, send this SMS message.MSC302 can have the logic based on switch, starts trigger when it upgrades in the position, makes resident or SCP (SCP) resident applications of switch produce and has the SMS message of sub-district ID.For example, can be programmed for triggering SCP when receiving the position renewal to switch.The resident logic of SCP can send position and detected instruction then to mobile radio station.Optionally, can be modified as execution same task when successfully handling IS-41 REGNOT request or GSM-MAP renewal position requests to HLR114.In other embodiments, can adopt and act on behalf of HLR.Act on behalf of HLR and intercept all are sent to HLR from MSC message.Handle by acting on behalf of HLR from the registration message of multi-mode WWAN and WLAN client's reception, and the message that is forwarded to HLR from all other clients is not made any modification.
Fig. 7 shows the mobile phone 310 of the example embodiment according to the present invention.For example, mobile phone comprises the logic that communicates and communicate according to the WWAN air interface according to WLAN air interface protocol (for example 802.xx).As described herein, mobile radio station can select to use one of air interface logic according to its detected relevant wireless frequency spectrum.In addition, mobile phone can be supported the grand network technology more than a kind of WWAN.For the CDMA mobile phone, suppose and add the WLAN modulator-demodulator to this mobile phone.In addition, need the ability that voice is transmitted as the SIP/RTP/UDP/IP grouping.Formerly the network measuring method described of part and detect and find professional required modification by using sub-district ID to reduce in a preferred embodiment of the invention, will be caught by the specific computer program on the computing platform that operates in mobile phone.
Fig. 8 shows mobile radio station 310 moving from WLAN environment 200 to WWAN environment 100.In certain embodiments of the present invention, when its when WLAN200 roams into the WWAN, mobile radio station 310 is registered in WWAN environment 100.Same, also to carry out suitable switching.Use the mobile radio station 310 of above-mentioned network measuring method to infer that it need register to the WWAN environment.
Mobile radio station (MS) leaves WLAN and enters WWAN:With reference to figure 8 and 9, the registration of Shi Shiing and switch as follows in certain embodiments.Logic is since 900, and proceeds to 902, and at this, mobile radio station 300 sends register requirement to (new) serving BS controller (BSC) 106 in the WWAN.BSC106 sends 904 location update messages to its service MSC110.Service MSC110 request 906 registrations in the WWAN from HLR114.HLR114 sends 908 un-register requests to interior (previous) service MSC302 of WLAN.Optionally, (previous) service MSC302 can send 910 SIP registration cancellation and ask mobile radio station 310, and this mobile radio station responds with affirmation.This can promote mobile radio station " removing " or " dismounting ", because it no longer communicates through WLAN.(previous) service MSC302 responds 912 un-register message to HLR114.HLR confirms that 914 register requirement are to interior (new) service MSC110 of WWAN.(new) service MSC110 accepts 916 positions from BSC106 and upgrades.BSC106 confirms 918 registrations from mobile radio station 310.
In example embodiment of the present invention, if WWAN is the IS-41 network, then registration, un-register and acknowledge message will be used the IS-41 protocol elements.The various particular messages of using as explaining with reference to figure 9, are presented among Figure 10.In another example embodiment, if WWAN is the GSM-MAP network, then registration, un-register and acknowledge message will be used the GSM-MAP protocol elements.The various particular messages of the use of explaining with reference to figure 9 as shown in figure 11.
Direct-cut operation from WLAN to WWAN:In this example, when participating in call, mobile radio station 310 roams into WWAN100 from WLAN200.The WLAN environment needs mobile radio station to switch 802 to WWAN service MSC110 from WLAN service MSC302.Because mobile radio station 310 is just participating in the calling in the WLAN, so the SIP client in the mobile radio station 310 is just managing this calling.This client need notify WLAN service MSC302 WWAN the sub-district ID of grand network.In a preferred embodiment of the invention, because this sub-district id information makes SIP order " SIPINFO " overload.In the logic of describing below in conjunction with Figure 12, so represent the overload messages element.
Logic is since 1200, and proceeds to 1202, and 310 notice WLAN service MSC (source MSC) 302 need switch at this mobile radio station.This can be according to the network measuring method.As mentioned above, in the network measuring method, mobile radio station 310 detects WLAN and WWAN network, and selects one of them according to relevant RF intensity.Between detection period, the sub-district ID of WWAN network becomes known to mobile radio station 310.Mobile radio station 310 use sub-district ID begin the direct-cut operation from wlan network to the WWAN network.In the message that requires to switch, the sub-district ID of WWAN network is sent to the WLAN switch.This is overload SIP order.Use sub-district ID, thereby be that the MSC of the serving WLAN of anchor knows and is connected to which other MSC now.Source MSC302 sends 1204 device directives (FD) to the MSC (target MSC) 110 of WWAN, allows it to open from source MSC302 to target MSC carrier channel on 110 the PSTN112 (for example).This allows the anchor of source MSC as communication, has new " branch road " to target MSC, and the path of arriving other entities in the extant call.Target MSC 110 sends 1206 handoff request to (target) BSC106.Target BS C106 begins 1208 and communicates by letter with the RF channel signaling of mobile radio station 310.Source MSC is returned in target MSC 110 responses 1212 device directive requests.Source MSC302 sends 1214 message to mobile radio station 310, and expression can begin to switch.For example, this message can be used as the overload sip message and sends.This message vaild notice mobile radio station, it can select and bring into use suitable RF to communicate by letter with WWAN with modulation circuit.Mobile radio station 310 sends 1216 message to source MSC302, begins to switch.Equally, this message also can be used as the overload sip message and sends.Mobile radio station 310 beginning 1218 is communicated by letter with the RF signal signaling of target BS C106.Mobile radio station 310 sends 1220 handoff completion messages to target BS C106.Equally, this message also can be used as the overload sip message and sends.Target BS C106 confirms that 1222 switching commands are to mobile radio station 310.Target BS C106 sends 1224 and handoffs completion message to target MSC 110.Target MSC 110 sends 1226 message to source MSC302, expression mobile radio station 310 with channel that target BS C106 communicates by letter on.Source MSC302 sends 1228 message to mobile radio station 310, and the expression mobile radio station can be removed any resource of distributing to this processing.Mobile radio station 310 usefulness OK acknowledge messages response 1230.
In example embodiment of the present invention, if WWAN is the IS-41 network, then these message comprise overload message, all use the IS-41 protocol elements.The various particular messages of using, Figure 12 explains as reference, is presented among Figure 13.In another example embodiment, if the WWAN network is the GSM-MAP network, then employed protocol elements is GSM-MAP.The various particular messages of the use of explaining with reference to Figure 12 as shown in figure 14.
Figure 15 shows that mobile radio station 310 roams into the example of WLAN200 environment from WWAN100.Use the mobile radio station 310 of above-described network measuring method to detect RF intensity, and determine to bring into use the WLAN environment, therefore begin register requirement at the WLAN close region.As above outline, mobile radio station can use the sub-district id information to determine when to begin to detect WLAN.
Mobile radio station (MS) enters WLAN from WWAN: when mobile radio station 310 enters WLAN200 from WWAN100, the logic of Figure 16 is as follows.Logic is since 1600, and proceeds to 1602, and is aforesaid at this, and when detecting WLAN RF energy intensity, mobile radio station 310 sends 1602 register requirement to WLAN service MSC302.This finishes by sip message (for example broadcast), and wherein WLAN service MSC receives this message.WLAN service MSC302 sends 1604 register requirement to HLR114.HLR sends 1606 un-register requests to should (before) serving WWAN MSC110.When receiving the un-register affirmation, HLR sends 1608 registration response confirmations to WLAN MSC302.What WLAN MSC302 sent 1610 pairs of these registrations confirms mobile radio station 310.
In example embodiment of the present invention, mobile radio station 310 roams into 802.11WLAN from IS-41 WWAN.The various particular messages of the use of explaining as reference Figure 16 are presented among Figure 17.In a preferred embodiment of the invention, mobile radio station 310 sends " SIP registration " message and serves MSC302 to WLAN, and this MSC302 sends IS-41 registration notification (REGNOT) and gives HLR114.HLR sends the WWANMSC110 (un-register this mobile radio station) of registration cancellation request to service mobile radio station 310, and when receiving the affirmation of un-register, send accreditation verification to WLAN service MSC302, this MSC302 sends " SIP 200OK " (affirmation) message to mobile radio station 310 then, finishes this processing.In another example embodiment of the present invention,, will adopt the GSM-MAP protocol elements of correspondence from registration, un-register and the acknowledge message of HLR if mobile radio station 310 enters into 802.11WLAN from GSM-MAP WWAN.The various particular messages of the use of explaining with reference to Figure 16 show in Figure 18.
Direct-cut operation from WWAN to WLAN:In this example, when participating in call, mobile radio station 310 roams into WLAN200 from WWAN100.Unified WLAN and WWAN environment need mobile radio station 310 to switch to WLAN service MSC302 from WWAN service MSC110.Some embodiment of the present invention that implements this kind switching uses the logic of Figure 19.
Logic is since 1900, and proceeds to 1902, determines that according to the information that receives from the mobile radio station 310 that uses above-described network measuring method 1902 needs switch at BSC106 (serving BS broadcasts C) of this service mobile radio station 310.It sends the message that requires to switch and arrives source MSC110.Source MSC110 sends 1904 device directives to WLAN MSC (target MSC)) 302, allow it to open from source MSC100 to target MSC carrier channel on 302 the PSTN112.Mobile radio station 310 sends 1906 handoff request to target MSC 302; In certain embodiments of the present invention, this message uses the SIP with overload order to send.Target MSC 302 confirms that 1908 should request.Mobile radio station 310 is confirmed the response of 1910 target MSC 302.Target 302 responses 1912 device directive requests are to source MSC110.Source MSC110 sends 1914 message to source BSC106, and expression is switched and can be begun.Source BSC106 sends 1916 switching commands to mobile radio station 310.Mobile radio station 310 sends 1918 message and confirms.Source BSC106 sends 1920 message to source MSC110, and expression is switched and begun.Mobile radio station 310 sends 1922 handoff completion messages to target MSC through the overload sip message once more.Target MSC confirms that 1924 switching commands are to mobile radio station 310.Target MSC 302 sends 1926 message to source MSC110, expression mobile radio station 310 with channel that target MSC is communicated by letter on.Source MSC110 sends 1928 message to source BSC106, is used for removing equipment.Source BSC106 removes with OK and finishes response 1930.
In example embodiment of the present invention, if WWAN is the IS-41 network, then these message comprise overload message, all use the IS-41 protocol elements.The various particular messages of using, Figure 19 explains as reference, is presented among Figure 20.In another example embodiment, if WWAN is the GSM-MAP network, then employed protocol elements is GSM-MAP.The various particular messages of the use of explaining with reference to Figure 19 as shown in figure 21.
The transmission of Short Message Service in WLAN (SMS):SMS be usually in WWAN100 by known be the network entity support of SMS service center (SMSC).Just roaming in the mobile radio station 310 preferred SMS of the support services in the WLAN200.In certain embodiments, the logic realization of Figure 22 the SMS service in the WLAN200.
The SMS message center send 2202 SMS request (that short message transmits is point-to-point-SMDPP) to WLAN service MSC302.In certain embodiments of the present invention, service MSC302 transships with the SMS payload and sends 2204 sip invite messages to mobile radio station 310.Mobile radio station 310 usefulness OK acknowledge messages response 2206.Service MSC3022208 represents that to MS this processing finishes.Mobile radio station 310 usefulness OK response 2210.Service MSC302 responds 2212 SMS message centers with the SMDPP request.
The transmission of IS-41 MWN (MWN) among the WLAN:MWN is the feature of WWAN100.Roam in the mobile radio station 310 preferred MWN of the support services in the WLAN200.In certain embodiments, the logic of Figure 23 provides MWN in WLAN.
IS-41 HLR 114 sends 2302 qualifications guiding notices (MWN type) to WLAN service MSC302.In certain embodiments of the present invention, service MSC302 uses MWN information overload 2304 sip invite messages to mobile radio station 310.Mobile radio station 310 usefulness OK acknowledge messages response 2306.Service MSC3022308 handles to mobile radio station 310 expressions and finishes.Mobile radio station 310 usefulness OK response 2310.Service MSC302 responds 2312 IS-41 HLR with the request of qualification guiding push-notification-answer.
Intra-company's call: in this example, the mobile radio station 310 (MS1) that roams in the WLAN200 begins to the intracompany calling of another mobile radio station (MS2).In certain embodiments, all and MS1 and MS2's all carries out in SIP alternately.The logic of implementing this calling is described in conjunction with Figure 24.
MS1 begins the call request of 2402 to WLAN service MSC302.MSC302 receives this request, and asks 2404 HLR114 location MS2.HLR114 responds 2406 with the position of MS2.MSC302 sends 2408 and is invited to MS2.MS2 confirms that 2410 should request.MSC302 confirms the affirmation of 2412 MS2.MSC302 sends 2414 and confirms MS1, and this calling is proceeded in expression now.MS1 confirms 2416, and the calling between MS1 and the MS2 is proceeded.
In example embodiment of the present invention, in the RTP/UDP/IP grouping, use EVRC (expansion variable rate encoding) to proceed intracompany calling.The request of location MS2 can be used the IS-41 protocol elements in the IS-41 network.Figure 25 shows another example embodiment, wherein use GSM EFR (expansion full-rate codes) to proceed to call out in the RTP/UDP/IP grouping, and the GSM-MAP protocol elements is used in the HLR inquiry.
Company arrives the call of PSTN:In this example, mobile radio station 310 begins to the call of PSTN mobile phone.The logic of the certain embodiments of the invention of supporting this calling is described in conjunction with Figure 26.
Use the mobile radio station 310 of SIP to send 2602 call requests to serving WLAN MSC302.Service MSC302 asks 2604 HLR, 114 location called parties.HLR 114 usefulness called parties' position (PSTN switch) response 2606.Service MSC302 request 2608 connections that can carry from the speech business of MSC302 media gateway.Media gateway responds 2610 with connection response.The service MSC302 send 2612 connection requests to the PSTN switch that is linked to each other by calling telephone number (promptly being connected to called party's switch).The PSTN switch is confirmed 2614 receptions that should ask.Service MSC302 tells 2616 mobile radio stations 310 its positive call try called party.The PSTN switch responds 2618 with link information.Service MSC302 sends 2620 message to mobile radio station 310, and the expression mobile radio station can be proceeded to call out.Mobile radio station 310 affirmations 2622 and conversation can begin.
In example embodiment of the present invention, the speech business between mobile radio station 310 and the service MSC302 is carried as the EVRC in the RTP/UDP/IP grouping, the speech business between service MSC302 and the PSTN switch is carried as 64K PCM voice.It is mutual to use the IS-41 protocol elements to carry out HLR.Figure 27 shows another example embodiment, it is mutual wherein to use the GSM-MAP protocol elements to carry out HLR, and mobile radio station 310 and the voice of service between the MSC302 carry as the GSM EFR in RTP/UDP/IP grouping, and the voice of serving between MSC302 and the PSTN switch are carried as 64K PCM sound circuit.
Company is to the call with tandem-free operation (TFO) of WWAN GSM:In this example, mobile phone 310 (MS1) begins to the call of another mobile radio station of roaming in the GSM network (MS2).Owing to only have mobile radio station to participate in this calling,, that is, be not condensed to the GSM EFR of 64KPCM and carry calling out as there being compression/needn't decompress(ion) so can carry out this calling with tandem-free operation.The logic of some embodiment that implements this calling is described in conjunction with Figure 28.
Use the mobile radio station 310 of SIP to send 2802 call requests to serving WLAN MSC302.Service MSC302 request 2804HLR 114 uses GSM MAP location called party.HLR 114 requests 2806 service GSM MSC110 location MS2 promptly, provide the roaming number relevant with MS2.GSM MSC responds 2808HLR114 with the roaming number of MS2.HLR 114 sends 2810 and routes responses to WLAN service MSC302.Service MSC302 request 2812 is used the TFO on the backbones and can be carried connection from the speech business of media gateway.Media gateway responds 2814 with connection response.Service MSC302 sends 2816 connection requests to GSM MSC.GSM MSC110 confirms that 2818 receive this request.Serving WLAN MSC302 informs its positive call try called party of 2820 mobile radio stations 310.GSM MSC110 responds 2822 with link information.Service MSC302 sends 2824 message to mobile radio station 310, and the expression mobile radio station can be proceeded to call out.Mobile radio station 310 is confirmed, and conversation can begin.
In example embodiment of the present invention, speech business between MS and the service MSC302 can be used as the GSM EFR in the RTP/UDP/IP grouping and carries, and the speech business between WLAN service MSC (media gateway) and the GSM MSC (or gsm wireless access network) is carried as the GSM EFR among the 64K DS0 of TFO channel.
Other variation
Fundamental mechanism of the present invention is to roam from the WLAN to the switching of the mobile radio station in the WWAN environment when it during calling out.This mechanism supposition exists and connects WLAN and use for example backbone of the WWAN switch of the standard mobility management protocol of IS-41.Figure 29 shows the example embodiment of a method, and this method is used for influence switching when lacking this type of connectivity, in conjunction with Figure 30 exemplary logic is discussed.As shown in the figure, and according to previous description of the present invention, when participating in and during the call of A side, this A can use PSTN mobile phone 2902 or WWAN cell phone 2904, mobile radio station 310 (MS) detects WLAN and WWAN environment, and definite WLAN environment intensity weakens gradually, and WWAN environment intensity enhancing.In this scheme, mobile radio station 310 can determine that 3002 are about to switch.When making this decision, mobile radio station 310 request 3004WLAN switches 302 are to its transmission interim local telephone number (TLDN).As is known to the person skilled in the art, other telephone exchanges can use TLDN to route the call to the switch that sends this TLDN.When receiving TLDN, mobile radio station 310 continues roaming, and mobile radio station 310 or WLAN switch or the two find that the connectivity between 3006 mobile radio stations 310 and the WLAN switch disappears.In this incident, that the WLAN switch temporarily places A side is 3008 online (WLAN can by the state that carries out of the broadcast announcement A side thing of pre-recording).When detecting the WWAN environment and complete successfully registration in the WWAN environment, mobile radio station 310 requests are with the calling (callee) of TLDN as the destination.The WWAN switch use it this calls out the WLAN switch based on the logical routing route 3010 of TLDN.The WLAN switch is recognized 3012 these TLDN, and A side is connected to incoming call.Thereby though interruption is arranged, A side and MS can continue the calling just carried out.
Many companies utilize private branch exchange (PBX).The PBX system provides the environment of feature rich to additional phone, for example abbreviated dialing, Multi-Way Calling etc. usually.In certain embodiments of the present invention, can use the WLAN switch together with the PBX system.
Figure 31 shows the example embodiment of this kind configuration.WLAN200 is connected to PBX3102 by standard supporting interface (for example ISDN PRI).Initiate from the mobile phone that is connected to PBX and destination is that the call of the mobile phone of WLAN control can be sent to WLAN switch 3104 through this standard interface.The WLAN switch can use this standard interface to transmit call to PBX.
Mobile radio station 310 can use the WLAN air interface to call out, and this type of calling is sent to WLAN switch 2904 through the IP of LAN206 link on wired lan 206.Switch 3104 transmits this call signaling (and finally being voice or other data) then to pbx switch 3102 on ISDN PRI link 3106, this switch processes is called out, just look like this calling from like the PBX phone 3108, and therefore provide PBX to serve to mobile radio station.For example, if mobile radio station uses the abbreviated dialing scheme, then PBX can make suitable connection, and transmits this communication through pbx switch 3102.
For Internal call, WLAN switch 3104 receives mobile radio station signaling and data as IP in fact as protocol converter, and offers PBX through it as ISDN information through ISDN PRI link.
For external call, the following operation of some embodiment.WLAN switch 3104 detects the mobile radio station expectation and calls out foreign side.This can for example watch certain dialing pattern information of whether using by analyzing called party's information rising sun in next life, for example adds number " 9 " in the front of called-number.In this example, switch 3104 is communicated by letter with WWAN switch 3112, and relevant with the called party's information after a while TLDN of request, and called party's information for example is called party number " 123 ".When receiving this type of TLDN, switch 3104 uses this TLDN to be connected to WWAN switch 3112 through 3102 circuit relevant with this mobile radio station of link 3106 request pbx switch then, promptly asks PBX that calling is connected to TLDN as the called party.WWAN switch 3112 is recognized this incoming call request with TLDN to previously stored called party number 123 (being that WWAN switch 3104 interrelates TLDN that sends and the called-number " 123 " that had before received from WLAN switch 3104), and, route the call to callee's number " 123 " as described in the standard logical routing.Thereby PBX3102 asks the calling of destination TLDN, but WWAN switch 3112 recognizes this calling and be actually destination " 123 ", and routes the call to " 123 ".TLDN is as identifier, be identified on the IP link 3114 " signaling " and from the request on ISDNPRI link 3110 of PBX.Like this, any follow-up signaling or the link 3114 relevant with mobile radio station 310 all with link 3110 on correct bearer circuit interrelate.
Aspect mobile management, can roam as mentioned above.If between WWAN switch 3312 and WLAN switch 3104, have the mobile management backbone, then carry out direct-cut operation as mentioned above.This logic is presented among Figure 12-14 and the 19-21, and the relevant direct-cut operation explanation under the heterogeneous networks condition is arranged.When lacking this type of backbone, TLDN can be switched as handover mechanism, promptly when mobile radio station roams into the WWAN zone and lose wireless connections with WLAN, mobile radio station reconnects this automatically by use TLDN and calls out and carry out switching.In this example, during call setup, or as mentioned above in response to the mobile radio station request, the WLAN switch can be notified the TLDN that mobile radio station will use (for example WLAN switch 3104 buffer memory TLDN and wait for the request of mobile radio station).
In this configuration, WWAN MSC3112 fixes this calling.Some variation is possible.For example, between transfer period, the WWAN MSC previous employed link of can dismantling to PBX.This is effective for two party call.Yet, be the calling of supporting to participate in many ways in the PBX territory, must remain to the link of PBX.In such cases, WWAN MSC3112 must insert existing call with mobile radio station temporarily.
Above-mentioned discussion and claims relate to specific wlan standard sometimes, and for example 802.11.When using very special example, do so usually.In most examples, relate to 802.x." x " title is used to represent wideer applicability, promptly any 802 wlan standards.
Call out though some discussion is a reference voice, for those skilled in the art, above-mentioned instruction and claims also relate to data call.
It is also understood that the scope of the invention is not limited to the foregoing description, but be defined by the following claims that these claims comprise modification and the improvement carried out to having illustrated.

Claims (46)

1. method of select using air interface protocol for mobile radio station, wherein mobile radio station comprises the logic (WLAN logic) that (a) communicates according to 802.xx WLAN (wireless local area network) air interface protocol, (b) logic that communicates according to the wireless wide area network air interface protocol (WWAN logic), (c) logic of selecting one of WLAN logic and WWAN logic to communicate on the interface aloft, this method comprises:
Mobile radio station detects the RF energy in the 802.xx frequency spectrum;
In response to the energy measuring step, determine whether to exist the 802.xx WLAN that can serve mobile radio station by carrying out scan operation; And
Can serve the 802.xx WLAN of mobile radio station if exist, mobile radio station is then selected this WLAN logic.
2. the method for claim 1, wherein described scan operation is the drive sweep operation, and wherein the mobile radio station search is by the beacon frame of 802.xx WLAN broadcasting.
3. the method for claim 1, wherein described scan operation is an active scan operation, and wherein mobile radio station is launched the probe request frame, and waits for the probe response from 802.xx WLAN.
4. method as claimed in claim 2, wherein, described beacon frame comprises SSID, the access point of this SSID identification 802.xx WLAN.
5. method as claimed in claim 3, wherein, described probe response comprises SSID, the access point of this SSID identification 802.xx WLAN.
6. method as claimed in claim 4, wherein, described mobile radio station compares SSID in the beacon frame and SSID group, to determine that SSID in the beacon frame is whether in the SSID group, if and determine in the SSID group effective 802.xx WLAN that then definite detected 802.xx WLAN is the service mobile radio station.
7. method as claimed in claim 5, wherein, described mobile radio station is interior SSID and the SSID group of probe response relatively, to determine that SSID in the probe response is whether in the SSID group, if and determine in the SSID group effective 802.xx WLAN that then definite detected 802.xx WLAN is the service mobile radio station.
8. method as claimed in claim 6, wherein, described mobile radio station and 802.xx WLAN identify identity separately mutually.
9. method as claimed in claim 7, wherein, described mobile radio station and 802.xx WLAN identify identity separately mutually.
10. the method for claim 1, wherein, described WWAN has the information in the exercisable zone of identification WLAN, and WWAN provides at least one subclass of this information to mobile radio station, and mobile radio station uses this zone identifying information to determine whether to carry out the operation of RF energy measuring.
11. method as claimed in claim 10, wherein, described regional identifying information is sub-district ID, and wherein, mobile radio station is with its sub-district id information of operating just within it and the sub-district ID comparison that provides.
12. method as claimed in claim 10, wherein, described regional identifying information is geo-location satellite (GPS) information, and wherein mobile radio station is determined self gps coordinate, and it and the GPS information that provides are compared.
13. the method for claim 1, wherein, described mobile radio station is RF energy value and threshold value relatively, and, described mobile radio station detects the RF energy of WWAN, with the described RF energy of WWAN and predetermined value relatively, and wherein, the comparative result of described mobile radio station use RF energy value and corresponding threshold value when selecting whether communicate by letter with WWAN with 802.xxWLAN.
14. the method for claim 1, wherein, described WWAN has the information in identification WLAN operable zone, and at least one subclass that described WWAN provides this type of information is to mobile radio station, and described mobile radio station uses this zone identifying information to determine whether to carry out the operation of RF energy measuring.
15. method as claimed in claim 10, wherein, described regional identifying information comprises the information of the WLAN of identification except that the mobile radio station service program is used.
16. method as claimed in claim 15, wherein, the information of described identification WLAN comprises the information of discerning the WLAN of company that accepts the mobile radio station service.
17. method as claimed in claim 10 wherein, provides area information for described mobile radio station from WWAN through SMS message.
18. method as claimed in claim 10 wherein, causes that in response to multi-mode mobile station location update message sends to the HLR of WWAN, provides area information.
19. a multi-mode mobile station comprises:
The first air interface logic communicates according to 802.xx WLAN (wireless local area network) air interface protocol;
The second air interface logic communicates according to the wireless wide area network air interface protocol;
In the 802.xx frequency spectrum, detect the logic of RF energy;
In response to detecting logic, by carrying out the logic that scan operation determines whether to exist the 802.xx WLAN that can serve multi-mode mobile station; And
In response to definite logic, can serve the 802.xxWLAN of multi-mode mobile station if exist, then select the logic of the first air interface logic.
20. a wireless communication system comprises:
WLAN (WLAN),
Radio wide area network (WWAN) comprises at least one MSC;
Multi-mode mobile station comprises determining whether the logic that communicates or communicate according to the WWAN air interface protocol according to the WLAN air interface protocol.
21. system as claimed in claim 20, wherein, described WWAN comprises logic, to provide information to arrive multi-mode mobile station, the geographic area of notice mobile radio station WLAN, and wherein said logic determines to use described information to determine whether to communicate or communicate according to the WWAN air interface protocol according to the WLAN air interface protocol.
22. the mobility method at 802.xx WLAN (WLAN) and the last managing mobile station of radio wide area network (WWAN) wherein provides the service MSC of mobile switching centre (MSC) as WLAN, described method comprises:
(a) mobile radio station detects the RF energy of WLAN, and confirms that it becomes the ability of WLAN a member;
(b) in response to step (a), mobile radio station sends a request for registration to the service MSC of WLAN;
(c) in response to step (b), the service MSC of WLAN makes WWAN recognize mobile radio station to the service MSC of WLAN registration, and this mobile radio station is no longer by previous MSC service;
(d) mobile radio station through the WLAN agreement by communicating by letter with WLAN and WLAN communicates by letter with the entity of transmission information outside the WLAN through the service MSC of WLAN and WWAN.
23. method as claimed in claim 22, wherein, described mobile radio station sends register requirement by send the SIP registration message through the WLAN air interface protocol on WLAN, and request is in the registration of WLAN, and WLAN transmits the MSC of this register requirement to serving WLAN.
24. method as claimed in claim 22 comprises that further the MSC of serving WLAN sends the MSC of un-register request to previous service mobile radio station.
25. method as claimed in claim 22, wherein, the described MSC of serving WLAN sends registration notification message to HLR, and with the mobile station location information of renewal WWAN, and wherein HLR communicates by letter with previous MSC, with the service of cancellation mobile radio station in WLAN.
26. method as claimed in claim 22, wherein, the described MSC of serving WLAN sends and upgrades location message to HLR, to upgrade the mobile station location information of WWAN, and wherein HLR communicate by letter with previous MSC, and cancelling the service of mobile radio station in WWAN, and wherein the MSC of HLR and serving WLAN communicates by letter, mobile radio station is inserted among the WLAN, be used for service as the user.
27. method as claimed in claim 22, wherein, when mobile radio station was just participating in using the calling of WWAN air interface protocol, described mobile radio station detected the RF energy of WLAN, and confirms that it becomes the ability of WLAN a member, and in response to this,
Send a message to the source MSC of this calling of service, wish to switch;
Source MSC analyzes this message, will himself be established as anchor MSC, and sets up and serve the communication channel of the target MSC of detected WLAN;
Mobile radio station begins communicating by letter through WLAN air interface and WLAN;
WLAN forwards the message to the target MSC of serving WLAN through IP communication; And
These anchor MSC that communicate by letter of target MSC relaying.
28. method as claimed in claim 27, wherein, described mobile radio station sends the handoff request message of ordering as overload SIP through the WLAN air interface protocol, and WLAN transmits this handoff request message to target MSC.
29. method as claimed in claim 22 further comprises:
Mobile radio station determines whether it should communicate through the WWAN air interface protocol rather than through the WLAN air interface protocol;
Mobile radio station sends a request for registration to WWAN through base station controller (BSC) with corresponding to the MSC of mobile radio station parked position;
Corresponding MSC makes WWAN recognize this mobile radio station to corresponding MSC registration, and this mobile radio station is no longer served by the previous MSC of service mobile radio station when mobile radio station is communicated by letter according to the WLAN air interface protocol.
30. method as claimed in claim 29, wherein, when mobile radio station was just participating in calling under the WLAN air interface protocol, described mobile radio station determined that it should communicate according to the WWAN air interface protocol, and in response to this,
Send a message to the source MSC of this calling of service, wish to switch;
Source MSC analyzes this message, will himself be established as anchor MSC, and sets up and serve the communication channel of the target MSC of resident its interior WWAN geographic area of mobile radio station;
Mobile radio station begins and the communicating by letter of WWAN, and these anchor MSC that communicate by letter of target MSC relaying.
31. method as claimed in claim 30, wherein, the MSC of described mobile radio station notification service WLAN, the sub-district ID of WWAN geographic area, and wherein source MSC uses these sub-district id informations to set up communication channel with target MSC.
32. method as claimed in claim 31, wherein, described mobile radio station operating overload SIP informational message transmits the sub-district id information to source MSC.
33. method as claimed in claim 29, wherein, when mobile radio station was just participating in calling under the WLAN air interface protocol, described mobile radio station determined that it should be according to the communication of WWAN air interface protocol, and in response to this,
Send a message to source MSC, with request interim local telephone number (TLDN);
Source MSC provides TLDN to mobile radio station;
Source MSC keeps the called party who calls out online, and the calling as the called party with TLDN is carried out in the mobile radio station request;
WWAN calls out connection, mobile radio station is linked to each other with TLDN, to continue this calling.
34. a wireless communication system comprises:
WLAN (WLAN) comprises the logic that communicates according to the WLAN air interface protocol;
Radio wide area network (WWAN) comprises the logic that communicates according to the WWAN air interface protocol, and this WWAN comprises at least one MSC, is used for serving WLAN and carries out communicating by letter with the IP of WLAN;
Mobile radio station comprises the logic that communicates according to the WLAN air interface protocol, the logic that communicates according to the WWAN air interface protocol, and mobile management message is sent to the logic of WLAN as the overload sip message, be used to be forwarded to this at least one MSC.
35. radio wide area network (WWAN) service method is provided for the mobile radio station of service in WLAN (WLAN), comprises for one kind:
The MSC of serving WLAN is provided;
The MSC of serving WLAN receives provides WWAN the WWAN message of service;
MSC forms sip message with the WWAN message that receives;
MSC transmits this sip message to WLAN through the IP link;
WLAN transmits this sip message to mobile radio station through the WLAN air interface protocol.
36. method as claimed in claim 35, wherein, described WWAN service is Short Message Service (SMS), and wherein WWAN comprises the SMS center that is used for transmitting SMS message on WWAN, and wherein MSC forms sip invite message with the SMS pay(useful) load, and transmits described sip invite message to WLAN.
37. method as claimed in claim 35, wherein, described WWAN service is MWN (MWN), and wherein WWAN provides MWN message to WWAN, and wherein MSC forms sip invite message with MWN information, and transmits described sip invite message to WLAN.
38. method as claimed in claim 35, wherein, the MSC cooperation of the described MSC of serving WLAN and service WWAN is to be provided at the TFO call service between mobile radio station that moves in the WLAN and the mobile radio station that moves in WWAN.
39. the method for an internet interconnected mobile radio station to move in wireless wide area network (WWAN) comprises:
Switch is provided, communicates by letter with WLAN to communicate by letter, and communicate by letter with PBX through the PBX interface through IP;
Described switch receives mobile station communicate through WLAN;
Described switch is converted to form with the PBX interface compatibility with described mobile station communicate, and the communication of transmitting conversion is to PBX;
PBX receives the also communication of treatment conversion.
40. method as claimed in claim 39, wherein, described switch further is provided to communicate by letter with WWAN, and wherein switch is analyzed mobile station communicate, and definite mailing address is the entity outside the PBX territory, and in response to this,
Described switch is from the MSC request TLDN of service WWAN;
In response to receiving TLDN from MSC, switch sends a message to PBX, specifies TLDN mobile radio station is called out be connected to;
PBX calls out mobile radio station to be connected to and specifies TLDN.
41. method as claimed in claim 40 further comprises:
Mobile radio station is roamed during calling out,
Mobile radio station is transformed into the WWAN air interface protocol;
Mobile radio station reconnects to this calling by the TLDN of designated call.
42. method as claimed in claim 41, wherein, described mobile radio station reconnects to this calling automatically, need not user intervention.
43. method as claimed in claim 41, wherein, when detecting mobile radio station and lost with the communicating by letter of switch, the dismantle calling of MSC of PBX connects.
44. method as claimed in claim 41, wherein, when detecting mobile radio station and lost with the communicating by letter of switch, the calling that PBX remains to MSC connects.
45. method as claimed in claim 40 further comprises:
Mobile radio station is roamed during calling out,
When mobile radio station was just participating in calling under the WLAN air interface protocol, described mobile radio station determined that it should communicate according to the WWAN air interface protocol, in response to this,
Send a message to the source MSC of positive serving WLAN, wish to switch;
Source MSC analyzes this message, sets up anchor MSC, and sets up and serve the communication channel of the target MSC of the resident WWAN geographic area of mobile radio station;
Mobile radio station begins to communicate by letter with WWAN, and these anchor MSC that communicate by letter of target MSC relaying.
46. method as claimed in claim 45, wherein, the MSC of described mobile radio station notification service WLAN, the sub-district ID of WWAN geographic area, and wherein source MSC uses these sub-district id informations to set up communication channel with target MSC.
CN03801934.5A 2002-01-02 2003-01-02 Method, system and apparatus for providing WWAN services to a mobile station serviced by a WLAN Pending CN1613268A (en)

Applications Claiming Priority (10)

Application Number Priority Date Filing Date Title
US34580002P 2002-01-02 2002-01-02
US60/345,800 2002-01-02
US10/052,080 US20030134650A1 (en) 2002-01-17 2002-01-17 Method, system and apparatus for internetworking a mobile station to operate in a WWAN environment and in a WLAN environment with PBX services
US10/052,119 US20030133421A1 (en) 2002-01-17 2002-01-17 Method, system and apparatus for providing WWAN services to a mobile station serviced by a WLAN
US10/052,081 US7200112B2 (en) 2002-01-02 2002-01-17 Method, system, and apparatus for a mobile station to sense and select a wireless local area network (WLAN) or a wide area mobile wireless network (WWAN)
US10/052,080 2002-01-17
US10/052,127 US7149521B2 (en) 2002-01-02 2002-01-17 Method, system and apparatus for providing mobility management of a mobile station in WLAN and WWAN environments
US10/052,081 2002-01-17
US10/052,127 2002-01-17
US10/052,119 2002-01-17

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008022596A1 (en) * 2006-08-17 2008-02-28 Huawei Technologies Co., Ltd. A method, system and apparatus for delivering sms in forking mode
WO2008101431A1 (en) * 2007-02-16 2008-08-28 Huawei Technologies Co., Ltd. An information process method and device involving the multimode terminal that is in the isomerous network
CN1984455B (en) * 2005-10-07 2012-01-04 捷讯研究有限公司 System and method for configuring a handset between a cellular and a private wireless network mode
CN101184258B (en) * 2006-11-15 2012-03-21 华为技术有限公司 Message intercommunication method, system and message intercommunication entity
CN101796768B (en) * 2007-09-28 2013-07-10 三洋电机株式会社 Communication system, base station device, and terminal device

Families Citing this family (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7826868B2 (en) 2002-10-10 2010-11-02 Robbins Barry R Extension of a local area phone system to a wide area network
US7146130B2 (en) * 2003-02-24 2006-12-05 Qualcomm Incorporated Wireless local access network system detection and selection
US7590708B2 (en) 2003-02-24 2009-09-15 Qualcomm, Incorporated Wireless local access network system detection and selection
JP2006520164A (en) * 2003-03-12 2006-08-31 ペルソナ ソフトウェア， インコーポレイテッド． Extension of local area telephone system to wide area network telephone system.
US8005070B2 (en) 2003-03-12 2011-08-23 Lon Communication Mgmt. Llc Extension of a local area phone system to a wide area network with handoff features
US7277724B2 (en) 2003-04-14 2007-10-02 Sprint Spectrum L.P. Multi-mode mobile station and method
US8619757B2 (en) * 2003-05-01 2013-12-31 Interdigital Technology Corporation Method and apparatus for delivery of data-based/voice services over piconets and wireless LANs (WLANs) coupled to 3GPP devices including protocol architecture and information elements relating to short message services (SMS) over WLANs
JP4649547B2 (en) * 2003-08-06 2011-03-09 スミス マイクロ ソフトウェア インコーポレイテッド Method and apparatus for seamless roaming between wireless networks
US7187923B2 (en) * 2003-11-20 2007-03-06 Research In Motion Limited Seamless call switching in a dual mode environment
US7315742B2 (en) * 2003-12-15 2008-01-01 International Business Machines Corporation Voice-over IP mobile roaming using SIP refer
US7215959B2 (en) * 2003-12-15 2007-05-08 International Business Machines Corporation Cellular to 802.11 voice roaming utilizing SIP signaling
US8078164B2 (en) * 2004-01-06 2011-12-13 Vasu Networks Corporation Mobile telephone VOIP/cellular seamless roaming switching controller
US10419996B2 (en) 2004-01-06 2019-09-17 Vasu Networks Corporation Mobile device with automatic switching between cellular and wifi networks
US8913604B2 (en) 2004-01-06 2014-12-16 Vasu Networks Corporation Access point with controller for billing and generating income for access point owner
CN100544518C (en) 2004-01-06 2009-09-23 哈瓦公司 The phone of between cellular network and voip networks, changing automatically
WO2006011865A1 (en) * 2004-06-24 2006-02-02 Sprint Spectrum L.P. Multi-mode wwan / wlan mobile station and method for registering said mobile station in a wwan through a wlan
CA2574052A1 (en) 2004-07-16 2006-02-23 Bridgeport Networks, Inc. Presence detection and handoff for cellular and internet protocol telephony
AU2005267168A1 (en) 2004-07-20 2006-02-02 Qualcomm Incorporated Handoff between a SIP network and a cellular communication system
US20060072481A1 (en) 2004-09-30 2006-04-06 Motorola, Inc. Apparatus and method to facilitate mobility management
US8340713B2 (en) 2004-10-22 2012-12-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and devices for supporting message services to a dual mode mobile station via a session initiation protocol
US10320989B2 (en) 2005-02-11 2019-06-11 Vasu Networks Corporation Access point with controller for billing and generating income for access point owner
DE202005021930U1 (en) 2005-08-01 2011-08-08 Corning Cable Systems Llc Fiber optic decoupling cables and pre-connected assemblies with toning parts
US7986665B2 (en) 2005-09-23 2011-07-26 Research In Motion Limited Conferencing PSTN gateway methods and apparatus to facilitate heterogeneous wireless network handovers for mobile communication devices
US20070082697A1 (en) 2005-10-07 2007-04-12 Research In Motion Limited System and method of handset configuration between cellular and private wireless network modes
CN101395896B (en) 2006-03-10 2012-12-05 英国电讯有限公司 Call completion service in case of called party unavailability
JP4839958B2 (en) * 2006-05-17 2011-12-21 日本電気株式会社 Mobile communication system, switching center server, and additional service providing method used therefor
EP2020157B1 (en) 2006-05-23 2012-07-11 BRITISH TELECOMMUNICATIONS public limited company Multi-network mobile communications system
GB2449533B (en) 2007-02-23 2009-06-03 Ubiquisys Ltd Basestation for cellular communications system
US9774695B2 (en) 2009-06-17 2017-09-26 Counterpath Corporation Enhanced presence detection for routing decisions
WO2014067565A1 (en) * 2012-10-30 2014-05-08 Telefonaktiebolaget L M Ericsson (Publ) Methods and apparatus for maintaining information regarding the movement of user terminals
US20150365875A1 (en) * 2013-03-01 2015-12-17 Telefonaktiebolaget L M Ericsson (Publ) Selecting a Radio Access Network Cell

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6377608B1 (en) * 1998-09-30 2002-04-23 Intersil Americas Inc. Pulsed beacon-based interference reduction mechanism for wireless communication networks
US6243581B1 (en) * 1998-12-11 2001-06-05 Nortel Networks Limited Method and system for seamless roaming between wireless communication networks with a mobile terminal
US6525648B1 (en) * 1999-01-29 2003-02-25 Intermec Ip Corp Radio frequency identification systems and methods for waking up data storage devices for wireless communication
US6549768B1 (en) * 1999-08-24 2003-04-15 Nokia Corp Mobile communications matching system
US6486832B1 (en) * 2000-11-10 2002-11-26 Am Group Direction-agile antenna system for wireless communications

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1984455B (en) * 2005-10-07 2012-01-04 捷讯研究有限公司 System and method for configuring a handset between a cellular and a private wireless network mode
WO2008022596A1 (en) * 2006-08-17 2008-02-28 Huawei Technologies Co., Ltd. A method, system and apparatus for delivering sms in forking mode
US8170590B2 (en) 2006-08-17 2012-05-01 Huawei Technologies Co., Ltd Method, system and apparatus for forking transmission of short message service
CN101184258B (en) * 2006-11-15 2012-03-21 华为技术有限公司 Message intercommunication method, system and message intercommunication entity
WO2008101431A1 (en) * 2007-02-16 2008-08-28 Huawei Technologies Co., Ltd. An information process method and device involving the multimode terminal that is in the isomerous network
CN101796768B (en) * 2007-09-28 2013-07-10 三洋电机株式会社 Communication system, base station device, and terminal device

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