CN101365178B - Emergency calling method and terminal device based on wireless LAN - Google Patents
Emergency calling method and terminal device based on wireless LAN Download PDFInfo
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- CN101365178B CN101365178B CN2008101498023A CN200810149802A CN101365178B CN 101365178 B CN101365178 B CN 101365178B CN 2008101498023 A CN2008101498023 A CN 2008101498023A CN 200810149802 A CN200810149802 A CN 200810149802A CN 101365178 B CN101365178 B CN 101365178B
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Abstract
The invention relates to an emergency call method based on a wireless local area network (WLAN), which is characterized in that the method includes the following steps: acquiring the terminal location information; generating the emergency conversation request information containing the location information; and sending the emergency conversation request information. When an IMS emergency call is realized through the WLAN, the location area identification or the DSL location identification of the mobile network is adopted so as to provide the terminal location identification and realize the routing of the emergency call, thereby providing the simpler and more practical WLAN emergency call routing solution for the WLAN.
Description
Technical field
The invention relates to the emergence call service of wireless communication field, is a kind of Emmergency call method and terminal installation based on WLAN specifically.
Background technology
IMS (IP Multimedia Subsystem) is an IP Multimedia System; By third generation partner program (3rd Generation Partnership Project; 3GPP) normal structure proposes on R5 version basis; Be the universal network framework that multimedia service is provided on IP-based network, the R5 version has mainly defined the contents such as core texture, Network Element Function, interface and flow process of IMS; The R6 version has carried out perfect to IMS, increased the characteristic such as intercommunication standard and WLAN access of part IMS traffic performance, IMS and other networks; R7 has strengthened standardization fixing, that move fusion is formulated, and requires IMS to support fixedly access way such as xDSL, cable.
Fig. 1 is the architectural framework of the IMS urgency communication of 3GPP proposition.For supporting urgency communication, introduced among the IMS promptly-call session controller (Emergency-Call Session Control Function, E-CSCF).The E-CSCF major function is following: (Proxy-Call SessionControl Function P-CSCF) receives emergent session and sets up request from agency-call session controller; If in the emergent session request, do not comprise the station location marker that station location marker maybe need add, the user positioning technology based on IMS capable of using is obtained station location marker; If terminal equipment (User Equipment UE) provides station location marker, under the situation of needs, E-CSCF can ask the position to obtain functional entity (Location Retrieval Function LRF) verifies station location marker.Simultaneously, LRF be can confirm or inquire about, correct routing iinformation or public safety answering center (Public Safety Answering Point, PSAP) destination address guaranteed; The emergent session request of setting up is routed to correct destination; Under the situation that country needs, E-CSCF can be sent to LRF with sign or the UE sign content that network inserts; Based on local policy, E-CSCF can route to the EC server with urgent IMS calling, and (Emergency Centre Server ECS) carries out further call treatment.
The inventor finds that there is following problem at least in prior art in realizing process of the present invention: when UE initiated the IMS emergency call request through WLAN, the access information parameter was the MAC Address of WLAN AP; But because the overlay area of WLAN is very little, so wireless local network connecting point (WLAN AccessPoint, WLAN AP) One's name is legion; And the possibility that move the AP position is bigger; Need in LRF/RDF, safeguard a very huge route information table like this, promptly need know the MAC Address corresponding address information of WLAN AP, i.e. the geographical position; With and corresponding urgent call routing iinformation, cause the waste of resource.
Summary of the invention
The present invention mainly addresses the problem: when realizing the IMS urgent call through wlan network; Utilize mobile network's Location Area Identification or the station location marker that the DSL port numbers provides the terminal; And utilize the corresponding urgent call routing iinformation of existing mobile network Location Area Identification in the carrier network; Or the corresponding urgent call routing iinformation of DSL port numbers, the route of realization WLAN urgent call.Thereby for wlan network provides a kind of simple and practical urgent call routing mechanism.
One embodiment of the invention provides a kind of Emmergency call method based on WLAN, and described method may further comprise the steps: obtain terminal positional information; Generation comprises the emergent session request message of said positional information; Send said emergent session request message.
Further embodiment of this invention also provides a kind of WLAN urgent call terminal, and described terminal comprises: location information acquiring unit is used to obtain terminal positional information; The conversation request generation unit is used to generate the emergent session request message that comprises said positional information; The request message transmitting element is used to send the emergent session request message that said generation unit generates.
When the present invention realizes the IMS urgent call through wlan network; Utilize mobile network's Location Area Identification or the station location marker that the DSL port numbers provides the terminal; And realize the route of urgent call, thereby more simple and practical WLAN urgent call routing plan is provided for wlan network.
Description of drawings
Fig. 1 is the architectural framework of the IMS urgency communication of 3GPP proposition;
Fig. 2 is WLAN terminal structure figure of the present invention;
Fig. 3 is a kind of route implementing method of initiating the IMS emergence call service through WLAN of the present invention;
Fig. 4 is the network architecture figure of urgent call at the mobile network/WLAN bimodulus WLAN terminal of one embodiment of the invention;
Fig. 5 is the network architecture figure that urgent call is initiated through ustomer premises access equipment CPE in the WLAN terminal of one embodiment of the invention, and CPE inserts packet network through DSL;
Fig. 6 is the network architecture figure that urgent call is initiated through ustomer premises access equipment CPE in the WLAN terminal of one embodiment of the invention, and CPE inserts packet network through the mobile network;
Fig. 7 is the signaling diagram of one embodiment of the invention.
Embodiment
For making the object of the invention, technical scheme and advantage clearer,, the present invention is explained further details below in conjunction with execution mode and accompanying drawing.At this, exemplary embodiment of the present invention and explanation thereof are used to explain the present invention, but not as to qualification of the present invention.
Embodiment one:
The present invention provides a kind of route implementing method through WLAN initiation IMS emergence call service as shown in Figure 2, and described method comprises: obtain terminal positional information (step S301); Generation comprises the emergent session request message (step S302) of said positional information; Send said emergent session request message (step S303).Emergent session request message of the present invention is Session initiation Protocol (Session InitiationProtocol; SIP) emergent session request message, the IMS system routes to corresponding public safety answering center according to said emergent session request message with described emergent session request.
For realizing above-mentioned steps of the present invention, WLAN of the present invention as shown in Figure 3 terminal 400 comprises: location information acquiring unit 401 is used to receive the actual accessing position information of wireless local network user equipment; Conversation request generation unit 402 generates the SIP emergent session request message that comprises urgent unified resource identifier information, and the access message parameter in the said sip message is the relevant actual accessing position information of network of non-radio local; Request message transmitting element 403 is used to send the SIP emergent session request message that said generation unit generates.
The embodiment of the invention two:
To mobile network and WLAN multimode terminal; Add the WLAN multimode terminal or CDMA adds the WLAN multimode terminal like WCDMA; Because multiple access technology can concurrent working, so when the terminal communicated through wlan network, can also get access to the Location Area Identification that mobile network issues through system broadcast message simultaneously was the position sign; Like 3GPP network site district sign is cell ID CELL ID, and 3GPP2 network site district sign is SID+NID+PZID+BASE_ID.Fig. 4 is the network architecture figure that mobile network adds the urgent call at WLAN bimodulus WLAN terminal 400, and mobile network 502 inserts packet network and public IMS system 504 with wlan network 503.WLAN location information of terminals acquiring unit comprises primary importance information subelement in the present embodiment; Being used for the terminal is when inserting WLAN and mobile network's multimode terminal; Obtain the Location Area Identification of mobile network; Or, the Location Area Identification of mobile network and the MAC Address of wireless local network connecting point, and the information of obtaining sent to said conversation request generation unit as positional information.Said terminal also comprises, receiving element is used to receive the mobile network broadcast, and sends to location information acquiring unit, and said location information acquiring unit is extracted the terminal positional information of said mobile network broadcast.When the IMS urgent call was initiated through wlan network 502 in WLAN terminal 400, concrete steps were following:
Receiving element receives the mobile network broadcast, and sends to location information acquiring unit 401;
The primary importance information subelement of said location information acquiring unit 401 extracts the terminal positional information of said mobile network broadcast, obtains the station location marker (step S301) that mobile network issues through system broadcast message;
Conversation request generation unit 402 generates the SIP emergent session request message that comprises urgent unified resource identifier information; Access message parameter in the said sip message is the relevant actual accessing position information of described network of non-radio local; And; The access-info (access information) that is about in the P-Access-Network-Info header field parameter of said sip message is set to the station location marker that described mobile network issues; And the access-type (access style) in the P-Access-Network-Info header field parameter remains unchanged, and still is WLAN, generates emergent session request (step S302);
Described request message transmitting element 403 sends described SIP call request message to described IMS system of IMS system 504 (step S303) 504 and according to said SIP call request message described emergent session request is routed to corresponding public safety answering center.
Optional above-mentioned SIP call request message, also can be simultaneously with the MAC Address of going up WLAN AP obtainable because this is normal WLAN terminal through WLAN AP broadcast message.According to existing standard, access style (access-type) is WLAN, and access information is the WLAN node identification, is the MAC Address of WLAN AP then.
Through said method, can in the LRF/RDF of IMS, no longer safeguard a huge information table for wlan network, comprise MAC number of WLAN AP, concrete geographical position, EC routing iinformation.Only need to utilize form to get final product to mobile network existing mobile network lane place and EC routing iinformation.
The embodiment of the invention three:
When WLAN is applied to home environment, much be ustomer premises access equipment (Customer PremisesEquipment, application CPE); As shown in Figure 5, CPE601 on DSL is provided interface, be linked into packet network and IMS system 504; To under serve as WLAN AP, provide WLAN to insert for the WLAN terminal.Because DSL operator has the corresponding relation that database is preserved DSL port numbers and specific address in network, and DSL operator is the urgency traffic that VoIP is provided, and has corresponding EC routing iinformation.To application scenarios of the present invention, CPE601 is inserted through the WLAN mode in the WLAN terminal, and CPE601 is linked into packet network and IMS system 504 through DSL.
Because the possibility that CPE moves is very little; In the database of operator, can preserve DSL port numbers, particular geographic location in advance; The corresponding relation of EC routing iinformation, the route that the DSL port numbers of carrying according to the WLAN terminal just can be carried out urgent call.If the address at CPE place changes, the user can in time notify operator, so that the content in operator's its database of change.
The DSL station location marker is incorporated into wlan network; Good its DSL port numbers of static configuration in advance on CPE601 is expanded existing WLAN broadcast, makes to comprise the DSL port numbers in the broadcast; After WLAN terminal 501 gets access to the DSL port numbers, in the SIP call request message, carry this port numbers.WLAN location information of terminals acquiring unit comprises second place information subelement in the present embodiment; When being used for the terminal through ustomer premises access equipment CPE access packet network; Obtain the digital user wire DSL positional information, and the information of obtaining is sent to said conversation request generation unit as positional information.Said terminal also comprises, receiving element is used to receive wireless local area networks broadcast message, and sends to location information acquiring unit, and said location information acquiring unit is extracted the terminal positional information of said wireless local area networks broadcast message.
When the IMS urgent call was initiated through wlan network in WLAN terminal 400, concrete steps were following:
Receiving element receives the broadcast that CPE issues through WLAN;
The second place information subelement of said location information acquiring unit 401 extracts described broadcast, obtains DSL port numbers (step S301) wherein;
Conversation request generation unit 402 generates the SIP emergent session request message that comprises urgent unified resource identifier information; Access message parameter in the said sip message is the relevant actual accessing position information of described network of non-radio local; The access-info (access information) that is about in the P-Access-Network-Info header field parameter of said sip message is set to the DSL port numbers that CPE issues through the WLAN broadcast; And the access-type (access style) in the P-Access-Network-Info header field parameter remains unchanged; Still be WLAN, generate emergent session request (step S302);
Described solicited message transmitting element 403 sends described SIP call request message to IMS system 504 (step S303), and described IMS system 504 routes to corresponding public safety answering center according to said SIP call request message with described emergent session request.
Optional above-mentioned SIP call request message, also can be simultaneously with the MAC Address of going up WLAN AP obtainable because this is normal WLAN terminal through WLAN AP broadcast message.According to existing standard, access style (access-type) is WLAN, and access information is the WLAN node identification, is the MAC Address of WLAN AP then.
The embodiment of the invention four:
To be that ustomer premises access equipment CPE is linked into the access way of packet network different with the difference of embodiment three; As shown in Figure 6, CPE601 on the mobile network interface is provided, be linked into packet network and IMS system 504; To under serve as WLAN AP, provide WLAN to insert for the WLAN terminal.Because mobile operator has the corresponding relation that database is preserved mobile network station location marker and specific address in network, and mobile operator is the urgency traffic that VoIP is provided, and has corresponding EC routing iinformation.To application scenarios of the present invention, CPE601 is inserted through the WLAN mode in the WLAN terminal, and CPE601 is linked into packet network and IMS system 504 through mobile network.
The mobile network station location marker is incorporated into wlan network; CPE601 obtains the mobile network station location marker through the broadcast that receives mobile network downward; Existing WLAN broadcast is expanded; Make to comprise the mobile network station location marker in the broadcast, after the WLAN broadcast that WLAN terminal 501 issues through reception CPE gets access to the mobile network station location marker, in the SIP call request message, carry this station location marker.WLAN location information of terminals acquiring unit comprises the 3rd positional information subelement in the present embodiment; When being used for the terminal through wireless local network connecting point access packet network; Obtain the mobile network Location Area Identification of this wireless local network connecting point position, and the information of obtaining is sent to said conversation request generation unit as positional information.Said terminal also comprises, receiving element is used to receive wireless local area networks broadcast message, and sends to location information acquiring unit, and said location information acquiring unit is extracted the terminal positional information of said wireless local area networks broadcast message.
When the IMS urgent call was initiated through wlan network in WLAN terminal 400, concrete steps were following:
Receiving element receives the broadcast that CPE issues through WLAN;
The 3rd positional information subelement of said location information acquiring unit 401 extracts described broadcast, obtains mobile network station location marker (step S301) wherein;
Conversation request generation unit 402 generates the SIP emergent session request message that comprises urgent unified resource identifier information; Access message parameter in the said sip message is the relevant actual accessing position information of described network of non-radio local; The access-info (access information) that is about in the P-Access-Network-Info header field parameter of said sip message is set to the mobile network station location marker that CPE issues through the WLAN broadcast; And the access-type (access style) in the P-Access-Network-Info header field parameter remains unchanged; Still be WLAN, generate emergent session request (step S302);
Described solicited message transmitting element 403 sends described SIP call request message to IMS system 504 (step S303), and described IMS system 504 routes to corresponding public safety answering center according to said SIP call request message with described emergent session request.
Optional above-mentioned SIP call request message, also can be simultaneously with the MAC Address of going up WLAN AP obtainable because this is normal WLAN terminal through WLAN AP broadcast message.According to existing standard, access style (access-type) is WLAN, and access information is the WLAN node identification, is the MAC Address of WLAN AP then.
The embodiment of the invention five:
To the WLAN terminal the most frequently used pass through the scene that WLAN access point AP is linked into packet network and IMS system.The Location Area Identification that the mobile network has been defined is incorporated into wlan network, like the CELL ID of 3GPP network, the SID+NID+PZID+BASE_ID of 3GPP2 network.The mobile network Location Area Identification of good its respective regions of static configuration in advance on WLAN AP; Existing WLAN broadcast is expanded; Make and comprise the mobile network position region identification information in the broadcast; After the WLAN broadcast that the WLAN terminal issues through reception WLAN AP gets access to the mobile network location area information, in the SIP call request message, carry this station location marker.
How in advance WLAN AP static configuration mobile network Location Area Identification, and operator can configure on WLAN AP according to the geographical planning of network before Installation of W LAN AP equipment in advance; Also can, WLAN AP equipment carry out Remote configuration after installing through certain O&M management tool.If AP need move, then operator need be according to the corresponding mobile network Location Area Identification in its geographical position of actual conditions time update.WLAN location information of terminals acquiring unit comprises the 4th positional information subelement in the present embodiment; Being used for the terminal is when inserting the single-mode terminal of WLAN; Obtain mobile network's position region identification information; Or the DSL positional information, and the information of obtaining sent to said generation unit as positional information.Said terminal also comprises, receiving element is used to receive wireless local area networks broadcast message, and sends to location information acquiring unit, and said location information acquiring unit is extracted the terminal positional information of said wireless local area networks broadcast message.
Fig. 7 is the signaling diagram of the embodiment of the invention 3.
When the IMS urgent call was initiated through wlan network in the WLAN terminal, concrete steps were following:
Receiving element receives the broadcast that WLAN AP issues;
The 4th positional information subelement of said location information acquiring unit 401 extracts described broadcast, obtains mobile network station location marker (step S301) wherein;
The conversation request generation unit generates the SIP emergent session request message that comprises urgent unified resource identifier information; Access message parameter in the said sip message is the relevant actual accessing position information of described network of non-radio local; The access-info (access information) that is about in the P-Access-Network-Info header field parameter of said sip message is set to the mobile network position region identification information that described WLAN AP issues through broadcast; And the access-type (access style) in the P-Access-Network-Info header field parameter remains unchanged; Still be WLAN, generate emergent session request (step S302);
Described solicited message transmitting element sends described SIP call request message to IMS system (step S303), and described IMS system routes to corresponding public safety answering center according to said SIP call request message with described emergent session request.
Optional above-mentioned SIP call request message also can be simultaneously with the MAC Address of going up WLAN AP obtainable because this is normal WLAN terminal through WLAN AP broadcast message.According to existing standard, access style (access-type) is WLAN, and access information is the WLAN node identification, is the MAC Address of WLAN AP then.
The expansion to mobile network broadcast and wireless local area networks broadcast message among the present invention is expanding location sign type and concrete these two parameters of station location marker.Station location marker type parameter (parameter 1) occurrence comprises: 3GPP mobile network station location marker, 3GPP2 mobile network station location marker or DSL port numbers.Concrete station location marker parameter (parameter 2) is: if parameter 1=3GPP mobile network station location marker, the value of parameter 2=CELLID; If parameter 1=3GPP2 mobile network station location marker, the value of parameter 2=SID+NID+PZID+BASE_ID, if parameter 1=DSL port numbers, the value of parameter 2=DSL port numbers.Because the technology of expansion mobile network broadcast and wireless local area networks broadcast message be ability about the technology that the technical staff knew, repeat no more here.
When the present invention realizes the IMS urgent call through wlan network, utilize mobile network's Location Area Identification DSL port numbers that the station location marker at terminal is provided, and realize the route of urgent call.Thereby for wlan network provides more simple and practical WLAN urgent call routing plan.
Above-described embodiment; The object of the invention, technical scheme and beneficial effect have been carried out further explain, and institute it should be understood that the above is merely embodiment of the present invention; And be not used in qualification protection scope of the present invention; All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. WLAN Emmergency call method; Wherein ustomer premises access equipment on the digital subscriber line interface is provided, and be linked into packet network through Digital Subscriber Line, under serve as wireless local network connecting point; Provide WLAN to insert to WLAN terminal; Packet network is inserted through ustomer premises access equipment in said terminal, it is characterized in that said method comprises:
Extract the said terminal positional information of wireless local area networks broadcast message, said terminal positional information is the Digital Subscriber Line positional information, i.e. the Digital Subscriber Line port numbers;
Generation comprises the emergent session request message of said positional information;
Send said emergent session request message;
Utilize the corresponding urgent call routing iinformation of preserving in advance in the database in the Digital Subscriber Line carrier network of Digital Subscriber Line port numbers to realize the route of WLAN urgent call.
2. WLAN Emmergency call method; Wherein ustomer premises access equipment on the mobile network interface is provided, and be linked into packet network through mobile network, under serve as wireless local network connecting point; Provide WLAN to insert to WLAN terminal; Packet network is inserted through said ustomer premises access equipment in said terminal, it is characterized in that said method comprises:
Extract the said terminal positional information of wireless local area networks broadcast message, said terminal positional information is the mobile network Location Area Identification of this ustomer premises access equipment position;
Generation comprises the emergent session request message of said positional information;
Send said emergent session request message;
Utilize the corresponding VoIP urgent call routing iinformation of preserving in advance in the database in the mobile operator network of mobile network Location Area Identification to realize the route of WLAN urgent call.
3. WLAN terminal; Ustomer premises access equipment on the digital subscriber line interface is provided, and be linked into packet network through Digital Subscriber Line, under serve as wireless local network connecting point; Provide WLAN to insert to WLAN terminal; Packet network is inserted through said ustomer premises access equipment in said terminal, it is characterized in that described terminal comprises:
Location information acquiring unit is used to extract the said terminal positional information of wireless local area networks broadcast message, and said terminal positional information is the Digital Subscriber Line positional information, i.e. the Digital Subscriber Line port numbers;
The conversation request generation unit is used to generate the emergent session request message that comprises said terminal positional information;
The request message transmitting element is used to send the emergent session request message that said generation unit generates;
Said terminal utilizes the corresponding urgent call routing iinformation of preserving in advance in the database in the Digital Subscriber Line carrier network of Digital Subscriber Line port numbers to realize the route of WLAN urgent call.
4. terminal as claimed in claim 3 is characterized in that said terminal also comprises, receiving element receives wireless local area networks broadcast message, and sends to said location information acquiring unit;
Said location information acquiring unit also is used for extracting the terminal positional information of said wireless local area networks broadcast message.
5. WLAN terminal; Ustomer premises access equipment on the mobile network interface is provided, and be linked into packet network through mobile network, under serve as wireless local network connecting point; Provide WLAN to insert to WLAN terminal; Packet network is inserted through said ustomer premises access equipment in said terminal, it is characterized in that described terminal comprises:
Location information acquiring unit is used to extract the said terminal positional information of wireless local area networks broadcast message, and said terminal positional information is the mobile network Location Area Identification of this ustomer premises access equipment position;
The conversation request generation unit is used to generate the emergent session request message that comprises said terminal positional information;
The request message transmitting element is used to send the emergent session request message that said generation unit generates;
Said terminal utilizes the corresponding VoIP urgent call routing iinformation of preserving in advance in the database in the mobile operator network of mobile network Location Area Identification to realize the route of WLAN urgent call.
6. terminal as claimed in claim 5 is characterized in that said terminal also comprises, receiving element receives wireless local area networks broadcast message, and sends to said location information acquiring unit;
Said location information acquiring unit also is used for extracting the terminal positional information of said wireless local area networks broadcast message.
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| US8457591B2 (en) * | 2009-08-31 | 2013-06-04 | Motorola Solutions, Inc. | Method and apparatus for reserving resources for emergency services in a wireless communication system |
| CN104105055A (en) * | 2013-04-11 | 2014-10-15 | ***通信集团公司 | Communication processing method and device |
| CN106464653A (en) * | 2015-05-18 | 2017-02-22 | 华为技术有限公司 | Emergency call method, apparatus and device |
| US10383016B2 (en) * | 2015-07-02 | 2019-08-13 | Apple Inc. | Methods and apparatus to support emergency services connectivity requests through untrusted wireless networks |
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| KR20070100104A (en) * | 2006-04-06 | 2007-10-10 | 엘지전자 주식회사 | Method for supplying location service for emergency call on the wlan |
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Effective date of registration: 20171107 Address after: Metro Songshan Lake high tech Industrial Development Zone, Guangdong Province, Dongguan City Road 523808 No. 2 South Factory (1) project B2 -5 production workshop Patentee after: HUAWEI terminal (Dongguan) Co., Ltd. Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: Huawei Device Co., Ltd. |
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Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee after: Huawei Device Co., Ltd. Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province Patentee before: HUAWEI terminal (Dongguan) Co., Ltd. |