CN101365178A - 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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- CN101365178A CN101365178A CNA2008101498023A CN200810149802A CN101365178A CN 101365178 A CN101365178 A CN 101365178A CN A2008101498023 A CNA2008101498023 A CN A2008101498023A CN 200810149802 A CN200810149802 A CN 200810149802A CN 101365178 A CN101365178 A CN 101365178A
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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 (wireless local area network) 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 characteristics such as the intercommunication standard of part IMS traffic performance, IMS and other networks and WLAN access; 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 as follows: (Proxy-Call SessionControl Function P-CSCF) receives emergent session and sets up request from agency-call session controller; Maybe do not need the station location marker that adds if in the emergent session request, comprise station location marker, can utilize based on the user positioning technology of IMS and obtain 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 determine 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, sign that E-CSCF can insert network or UE sign content are sent to LRF; 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 is in realizing process of the present invention, there are the following problems at least to find prior art: when UE initiates the IMS emergency call request by WLAN, the access information parameter is 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 to know the MAC Address corresponding address information of WLAN AP, be 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 by wlan network, utilize mobile network's Location Area Identification or the station location marker that the DSL port numbers provides terminal, and utilize the urgent call routing iinformation of existing mobile network Location Area Identification correspondence in the carrier network, or the urgent call routing iinformation of DSL port numbers correspondence, 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 (wireless local area network), and described method may further comprise the steps: obtain terminal positional information; Generation comprises the emergent session request message of described positional information; Send described emergent session request message.
Further embodiment of this invention also provides a kind of WLAN (wireless local area network) 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 described positional information; The request message transmitting element is used to send the emergent session request message that described generation unit generates.
When the present invention realizes the IMS urgent call by wlan network, utilize mobile network's Location Area Identification or the station location marker that the DSL port numbers provides terminal, and realize the route of urgent call, thereby provide more simple and practical WLAN urgent call routing plan 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 by WLAN of the present invention;
Fig. 4 is the network architecture figure of urgent call of the mobile network/WLAN bimodulus WLAN terminal of one embodiment of the invention;
Fig. 5 is the network architecture figure that the WLAN terminal of one embodiment of the invention is initiated urgent call by ustomer premises access equipment CPE, and CPE inserts packet network by DSL;
Fig. 6 is the network architecture figure that the WLAN terminal of one embodiment of the invention is initiated urgent call by ustomer premises access equipment CPE, and CPE inserts packet network by the mobile network;
Fig. 7 is the signaling diagram of one embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer,, the present invention is described in 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 a limitation of the invention.
Embodiment one:
The invention provides a kind of route implementing method of initiating the IMS emergence call service by WLAN as shown in Figure 2, described method comprises: obtain terminal positional information (step S301); Generation comprises the emergent session request message (step S302) of described positional information; Send described 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 described emergent session request message with described emergent session request.
For realizing above-mentioned steps of the present invention, WLAN terminal 400 of the present invention as shown in Figure 3 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 described 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 described generation unit generates.
The embodiment of the invention two:
At mobile network and WLAN multimode terminal, add the WLAN multimode terminal or CDMA adds the WLAN multimode terminal as WCDMA, because multiple access technology can concurrent working, when so terminal communicates by wlan network, can also get access to simultaneously the Location Area Identification that mobile network issues by system broadcast message is the position sign, as 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 of WLAN bimodulus WLAN terminal 400, and mobile network 502 and wlan network 503 insert packet network and public IMS system 504.WLAN location information of terminals acquiring unit comprises primary importance information subelement in the present embodiment, being used for terminal is when inserting WLAN (wireless local area network) 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 described conversation request generation unit as positional information.Described terminal also comprises, receiving element is used to receive the mobile network broadcast, and sends to location information acquiring unit, and described location information acquiring unit is extracted the terminal positional information of described mobile network broadcast.When WLAN terminal 400 was initiated the IMS urgent call by wlan network 502, concrete steps were as follows:
Receiving element receives the mobile network broadcast, and sends to location information acquiring unit 401;
The primary importance information subelement of described location information acquiring unit 401 extracts the terminal positional information of described mobile network broadcast, obtains the station location marker (step S301) that mobile network issues by 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 described 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 described 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, still be WLAN, generate 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 described 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 that goes up WLAN AP obtainable because this is normal WLAN terminal by 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.
By 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 at 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, provide DSL interface on 601 couples of the CPE, 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 has corresponding EC routing iinformation for the urgency traffic of VoIP is provided.At application scenarios of the present invention, the WLAN terminal inserts CPE601 by the WLAN mode, and CPE 601 is linked into packet network and IMS system 504 by 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 operator changes the content in its database.
The DSL station location marker is incorporated into wlan network, good its DSL port numbers of static configuration in advance on CPE 601, existing WLAN broadcast is expanded, make and 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 terminal by ustomer premises access equipment CPE access packet network, obtain the digital user wire DSL positional information, and the information of obtaining is sent to described conversation request generation unit as positional information.Described terminal also comprises, receiving element is used to receive wireless local area networks broadcast message, and sends to location information acquiring unit, and described location information acquiring unit is extracted the terminal positional information of described wireless local area networks broadcast message.
When WLAN terminal 400 was initiated the IMS urgent call by wlan network, concrete steps were as follows:
Receiving element receives the broadcast that CPE issues by WLAN;
The second place information subelement of described 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 described 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 described sip message is set to the DSL port numbers that CPE issues by 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 described SIP call request message with described emergent session request.
Optional above-mentioned SIP call request message, also can be simultaneously with the MAC Address that goes up WLAN AP obtainable because this is normal WLAN terminal by 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, provide the mobile network interface on 601 couples of the CPE, 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 has corresponding EC routing iinformation for the urgency traffic of VoIP is provided.At application scenarios of the present invention, the WLAN terminal inserts CPE 601 by the WLAN mode, and CPE 601 is linked into packet network and IMS system 504 by mobile network.
The mobile network station location marker is incorporated into wlan network, CPE 601 obtains the mobile network station location marker by the broadcast that receives mobile network downward, existing WLAN broadcast is expanded, make and comprise the mobile network station location marker in the broadcast, after the WLAN broadcast that WLAN terminal 501 issues by 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 terminal by 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 described conversation request generation unit as positional information.Described terminal also comprises, receiving element is used to receive wireless local area networks broadcast message, and sends to location information acquiring unit, and described location information acquiring unit is extracted the terminal positional information of described wireless local area networks broadcast message.
When WLAN terminal 400 was initiated the IMS urgent call by wlan network, concrete steps were as follows:
Receiving element receives the broadcast that CPE issues by WLAN;
The 3rd positional information subelement of described 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 described 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 described sip message is set to the mobile network station location marker that CPE issues by 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 described SIP call request message with described emergent session request.
Optional above-mentioned SIP call request message, also can be simultaneously with the MAC Address that goes up WLAN AP obtainable because this is normal WLAN terminal by 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:
At 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, as 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 by 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 WLAN AP equipment is installed in advance; Also can after installing, WLAN AP equipment carry out Remote configuration by certain O﹠M management tool.If AP need move, then operator need be according to the mobile network Location Area Identification of its geographical position correspondence 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 terminal is when inserting the single-mode terminal of WLAN (wireless local area network), obtain mobile network's position region identification information, or the DSL positional information, and the information of obtaining sent to described generation unit as positional information.Described terminal also comprises, receiving element is used to receive wireless local area networks broadcast message, and sends to location information acquiring unit, and described location information acquiring unit is extracted the terminal positional information of described wireless local area networks broadcast message.
Fig. 7 is the signaling diagram of the embodiment of the invention 3.
When the WLAN terminal was initiated the IMS urgent call by wlan network, concrete steps were as follows:
Receiving element receives the broadcast that WLAN AP issues;
The 4th positional information subelement of described 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 described 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 described sip message is set to the mobile network position region identification information that described WLAN AP issues by 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 described SIP call request message with described emergent session request.
Optional above-mentioned SIP call request message also can be simultaneously with the MAC Address that goes up WLAN AP obtainable because this is normal WLAN terminal by 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 known technology of technical staff, repeat no more herein.
When the present invention realizes the IMS urgent call by wlan network, utilize mobile network's Location Area Identification DSL port numbers that the station location marker of 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; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the above only is the specific embodiment of the present invention; and be not intended to limit the scope of the invention; within the spirit and principles in the present invention all, any modification of being made, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. a WLAN (wireless local area network) Emmergency call method is characterized in that, described method comprises:
Obtain terminal positional information;
Generation comprises the emergent session request message of described positional information;
Send described emergent session request message.
2. WLAN (wireless local area network) Emmergency call method as claimed in claim 1, it is characterized in that, if terminal is for inserting WLAN (wireless local area network) and mobile network's multimode terminal, described terminal positional information is 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.
3. WLAN (wireless local area network) Emmergency call method as claimed in claim 1 is characterized in that, if terminal inserts packet network by ustomer premises access equipment CPE, described terminal positional information is the digital user wire DSL positional information.
4. WLAN (wireless local area network) Emmergency call method as claimed in claim 1 is characterized in that, if terminal inserts packet network by wireless local network connecting point, described terminal positional information is the mobile network Location Area Identification of this wireless local network connecting point position.
5. WLAN (wireless local area network) Emmergency call method as claimed in claim 1 is characterized in that, if terminal is for inserting the single-mode terminal of WLAN (wireless local area network), described terminal positional information is mobile network's position region identification information, or the DSL positional information.
6. as each described WLAN (wireless local area network) Emmergency call method of claim 1 to 5, it is characterized in that the described terminal positional information that obtains comprises: receive wireless local area networks broadcast message or mobile network broadcast, extract terminal positional information wherein.
7. a terminal is characterized in that, 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 described positional information;
The request message transmitting element is used to send the emergent session request message that described generation unit generates.
8. terminal as claimed in claim 7 is characterized in that, described location information acquiring unit comprises:
Primary importance information subelement, being used for terminal is when inserting WLAN (wireless local area network) 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 described generation unit as positional information.
9. terminal as claimed in claim 7 is characterized in that, described position letter acquiring unit comprises:
Second place information subelement when being used for terminal by ustomer premises access equipment CPE access packet network, obtaining the digital user wire DSL positional information, and the information of obtaining is sent to described generation unit as positional information.
10. terminal as claimed in claim 7 is characterized in that, described position letter acquiring unit comprises:
The 3rd positional information subelement when being used for terminal by wireless local network connecting point access packet network, obtaining the mobile network Location Area Identification of this wireless local network connecting point position, and the information of obtaining is sent to described generation unit as positional information.
11. terminal as claimed in claim 7 is characterized in that, described position letter acquiring unit comprises:
The 4th positional information subelement, being used for terminal is when inserting the single-mode terminal of WLAN (wireless local area network), to obtain mobile network's position region identification information, or the DSL positional information, and the information of obtaining is sent to described generation unit as positional information.
12. as each described terminal of claim 7 to 11, it is characterized in that described terminal also comprises, receiving element receives wireless local area networks broadcast message or mobile network broadcast, and sends to described location information acquiring unit;
Described location information acquiring unit also is used to extract the terminal positional information of described wireless local area networks broadcast message or mobile network broadcast.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102484782A (en) * | 2009-08-31 | 2012-05-30 | 摩托罗拉解决方案公司 | 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 |
| CN106376094A (en) * | 2015-07-02 | 2017-02-01 | 苹果公司 | Methods and apparatus to support emergency services connectivity requests through untrusted wireless networks |
| CN106464653A (en) * | 2015-05-18 | 2017-02-22 | 华为技术有限公司 | Emergency call method, apparatus and device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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2008
- 2008-09-27 CN CN2008101498023A patent/CN101365178B/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102484782A (en) * | 2009-08-31 | 2012-05-30 | 摩托罗拉解决方案公司 | Method and apparatus for reserving resources for emergency services in a wireless communication system |
| CN102484782B (en) * | 2009-08-31 | 2015-11-25 | 摩托罗拉解决方案公司 | Be preserved for the method and apparatus of the resource of 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 |
| CN106376094A (en) * | 2015-07-02 | 2017-02-01 | 苹果公司 | Methods and apparatus to support emergency services connectivity requests through untrusted wireless networks |
| US10383016B2 (en) | 2015-07-02 | 2019-08-13 | Apple Inc. | Methods and apparatus to support emergency services connectivity requests through untrusted wireless networks |
| CN106376094B (en) * | 2015-07-02 | 2019-12-03 | 苹果公司 | The method and apparatus for supporting urgency traffic connection request by insincere wireless network |
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| CN101365178B (en) | 2012-01-25 |
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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. |