Source: http://www.google.com/patents/US8111666?dq=KOI-18
Timestamp: 2017-01-20 20:57:19
Document Index: 735836931

Matched Legal Cases: ['Application No. 200810008444', 'Application No. 200810087515', 'Application No. 08', 'Application No. 08', 'Application No. 08872192', 'Application No. 200810087515', 'Application No. 200810087515', 'Application No. 200910211729']

Patent US8111666 - Method and system for idle mode signaling reduction - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inPatentsA method and a system for idle mode signaling reduction (ISR) are provided. The method includes: obtaining ISR activation information of a source network, and setting an ISR status of an user equipment (UE) in a target network according to the obtained ISR activation information of the source network....http://www.google.com/patents/US8111666?utm_source=gb-gplus-sharePatent US8111666 - Method and system for idle mode signaling reductionAdvanced Patent SearchTry the new Google Patents, with machine-classified Google Scholar results, and Japanese and South Korean patents.Publication numberUS8111666 B2Publication typeGrantApplication numberUS 12/618,177Publication dateFeb 7, 2012Filing dateNov 13, 2009Priority dateJan 30, 2008Fee statusPaidAlso published asCN101472340A, CN101472340B, CN102300191A, CN102300191B, CN102355705A, CN102355705B, EP2154859A1, EP2154859A4, EP2154859B1, EP2426988A1, US7855991, US20100064038, US20100272069, WO2009097734A1Publication number12618177, 618177, US 8111666 B2, US 8111666B2, US-B2-8111666, US8111666 B2, US8111666B2InventorsWeihua HUOriginal AssigneeHuawei Technologies Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (29), Non-Patent Citations (17), Referenced by (1), Classifications (6), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetMethod and system for idle mode signaling reduction
US 8111666 B2Abstract
A method and a system for idle mode signaling reduction (ISR) are provided. The method includes: obtaining ISR activation information of a source network, and setting an ISR status of an user equipment (UE) in a target network according to the obtained ISR activation information of the source network. Thus, the ISR status of the UE can be processed when the UE is handed over between networks.
1. A method for idle mode signaling reduction (ISR), comprising:
obtaining ISR activation information of a source network from a forward handover request message sent by a mobility management network element of the source network; and
setting an ISR status of a user equipment (UE) in a target network according to the obtained ISR activation information of the source network.
sending a bearer update request message to a serving gateway (SGW) of the target network, wherein the bearer update request message includes information indicating the SGW of the target network to maintain a current ISR status of a subscriber.
including information in the bearer update request message to instruct the SGW of the target network to maintain the activated ISR status, and to reserve bearer information of a source network side and a target network side when the ISR is not activated.
4. The method according to claim 1, wherein the setting the ISR status of the UE in the target network according to the obtained ISR activation information of the source network comprises:
if a mobility management network element of the target network has an ISR capability, determining whether to activate the ISR of the UE in the target network according to the obtained ISR capability of the source network, and if yes, activating the ISR of the UE in the target network.
5. The method according to claim 1, wherein the setting the ISR status of the UE in the target network according to the obtained ISR activation information of the source network comprises:
determining, by a mobility management network element of the target network, whether the UE has activated the ISR in the source network, and if yes, determining whether the mobility management network element of the target network has an ISR capability, and if yes, activating the ISR of the UE in the target network.
6. The method according to claim 1, wherein the ISR activation information of the source network is indication information indicating that the ISR status of the UE in the source network is activated, and the setting the ISR status of the UE in the target network comprises:
activating the ISR of the UE in the target network.
7. The method according to claim 1, wherein the ISR activation information of the source network is indication information indicating that the source network has an ISR capability, and the setting the ISR status of the UE in the target network comprises:
notifying the ISR status of the UE in the target network to an SGW of the target network.
9. The method for ISR according to claim 1, further comprising:
notifying the ISR status of the UE in the target network to the UE.
sending, by a mobility management network element of the target network, a bearer update request message to an SGW of the target network if the mobility management network element of the target network has an ISR capability or determines to activate the ISR of the UE in the target network, wherein the bearer update request message includes indication information indicating the SGW of the target network to maintain the current ISR status of a subscriber or indication information indicating that a current update process is a handover process; and
maintaining, by the SGW of the target network, the current ISR status of the subscriber unchanged according to the indication information.
notifying, by the mobility management network element of the target network, an ISR activation status or result of the UE in the target network to the mobility management network element of the source network.
12. A method for idle mode signaling reduction (ISR), comprising:
determining whether to activate an ISR of a user equipment (UE) in a target network according to an ISR capability or an ISR activation status of a source network if a mobility management network element of the target network has an ISR capability, and
activating the ISR of the UE in the target network if the source network supports the ISR or has activated the ISR.
obtaining the ISR capability or the ISR activation status of the source network,
and wherein the obtaining the ISR capability or the ISR activation status of the source network comprises:
sending a request to a mobility management network element using a different access technology in the source network, and returning, by the mobility management network element using the different access technology in the source network, a response message, wherein the response message includes information about the ISR capability or the ISR activation status of the source network.
sending, by the mobility management network element of the target network, a bearer update request message to a serving gateway (SGW) of the target network if the mobility management network element of the target network supports the ISR, wherein the bearer update request message includes indication information indicating the SGW of the target network to maintain a current ISR status of a subscriber or indication information indicating that a current update process is a handover process; and
15. The method for ISR according to claim 12, further comprising:
notifying, by the mobility management network element of the target network, the ISR status of the UE in the target network to a mobility management network element of the source network and/or the SGW of the target network and/or the UE.
16. A system for idle mode signaling reduction (ISR), comprising:
a mobility management network element of a target network, configured to obtain ISR activation information of a source network from a forward handover request message sent by a mobility management network element of the source network, and set an ISR status of a user equipment (UE) in the target network according to the obtained ISR activation information of the source network; and
a serving gateway (SGW) of the target network, configured to record the ISR status of the UE in the target network set by the mobility management network element of the target network.
17. The system for ISR according to claim 16, further comprising:
a mobility management network element of the source network, configured to provide the ISR activation information of the source network to the mobility management network element of the target network.
18. A computer program product for providing mobility, the computer program product having a non-transitory computer readable medium with a computer program embodied thereon, the computer program comprising:
computer program code for obtaining idle mode signaling reduction (ISR) activation information of a source network from a forward handover request message sent by a mobility management network element of the source network; and
computer program code for setting an ISR status of a user equipment (UE) in a target network according to the ISR activation information of the source network obtained by the computer program code for obtaining.
19. The computer program product according to claim 18, wherein the computer program code for setting comprises:
computer program code for determining whether the UE has activated the ISR in the source network according to the ISR activation information of the source network obtained by the computer program code for obtaining and whether the mobility management network element has an ISR capability;
computer program code for activating the ISR of the UE in the target network when the computer program code for determining determines that the UE has activated the ISR in the source network and the mobility management network element has the ISR capability; and
computer program code for notifying an ISR status of the UE in the target network set by the computer program code for activating to a serving gateway (SGW) of the target network and/or a mobility management network element of the source network and/or the UE.
20. The computer program product according to claim 18, wherein the computer program code for setting comprises:
computer program code for determining whether the source network has an ISR capability according to the ISR activation information of the source network obtained by the computer program code for obtaining;
computer program code for activating the ISR of the UE in the target network when the computer program code for determining determines that the source network has the ISR capability; and
21. The computer program product according to claim 19, wherein the computer program code for setting further comprises:
computer program code for sending a bearer update request message to the SGW of the target network if the mobility management network element of the target network has an ISR capability or determines to activate the ISR of the UE in the target network, wherein the bearer update request message includes information indicating the SGW of the target network to maintain a current ISR status of a subscriber or information indicating that a current update process is a handover process.
22. The computer program product according to claim 20, wherein the computer program code for setting further comprises:
23. The computer program product according to claim 18, wherein the mobility management network element is a mobility management entity (MME) or a serving general packet radio service support node (SGSN).
24. A computer program product for providing mobility, the computer program product having a non-transitory computer readable medium with a computer program embodied thereon, the computer program comprising:
computer program code for determining whether to activate an idle mode signaling reduction (ISR) of a user equipment (UE) in a target network according to an ISR capability or an ISR activation status of a source network when a mobility management network element of the target network has an ISR capability; and
computer program code for activating the ISR of the UE in the target network when the computer program code for determining determines that the source network has the ISR capability or has activated the ISR.
computer program code for sending a bearer update request message to a serving gateway (SGW) of the target network if the mobility management network element of the target network has the ISR capability or determines to activate the ISR of the UE in the target network, wherein the bearer update request message includes information indicating the SGW of the target network to maintain a current ISR status of a subscriber or information indicating that a current update process is a handover process.
computer program code for notifying an ISR status of the UE in the target network set by the computer program code for activating to a serving gateway (SGW) of the target network and/or a mobility management network element of the source network and/or the UE. Description
This application is a continuation of International Application No. PCT/CN2008/073865, filed on Dec. 30, 2008, which claims priority to Chinese Patent Application No. 200810008444.4, filed on Jan. 30, 2008 and Chinese Patent Application No. 200810087515.4, filed on Mar. 19, 2008, all of which are hereby incorporated by reference in their entireties.
In areas where different Third Generation Partnership Project (3GPP) access networks overlap or are adjacent to one another, when a subscriber changes an access system, for example, changes from a GSM/EDGE Radio Access Network/UMTS Terrestrial Radio Access Network (GERAN/UTRAN) to an Evolved UMTS Terrestrial Radio Access Network (EUTRAN), or from the EUTRAN to the GERAN/UTRAN, the subscriber needs to initiate a location update process, which brings certain load to the core network and air interfaces. In order to avoid such signaling load and to optimize the mobility management mechanism among different 3GPP access systems, the 3GPP has proposed an ISR mechanism in an idle mode, which aims at reducing the signaling load caused by the mobility management process of a user equipment (UE) among different access networks. The UE is registered with a serving general packet radio service support node (SGSN) and a mobility management entity (MME) in sequence, and then the ISR is enabled. Thus, as long as the UE does not leave the Routing Area (RA) and Tracking Area (TA) where it is located at the time of registering with the SGSN and MME, the UE does not need to initiate the location update process. Thus, even though a mobile subscriber is frequently handed over between a 2G/3G cell and a Long Term Evolution (LTE) cell, no signaling load will be generated. In addition, even if the RA or TA where the subscriber is located is changed, as long as the SGSN and MME where the subscriber is registered are not changed, the TA or RA update process initiated by the UE does not need to re-register the SGSN or MME on a Home Subscriber Server (HSS). Furthermore, in order to ensure that the MT (Mobile Terminated) service of the subscriber is not influenced, a Serving Gateway (SGW) needs to mark subscribers with the ISR enabled. When receiving downlink data or signaling of such a subscriber, the SGW notifies both the SGSN and the MME to initiate paging at the same time, thereby ensuring that the subscriber can be paged.
The mobility management network element of the target network is configured to obtain ISR activation information of a source network, and set an ISR status of a UE in the target network according to the obtained ISR activation information of the source network.
FIG. 1A-1B is a flow chart of a method for ISR according to a first embodiment of the present invention;
FIG. 2A-2B is a flow chart of a method for ISR according to a second embodiment of the present invention;
FIG. 3A-3B is a flow chart of a method for ISR according to a third embodiment of the present invention;
FIG. 4A-4B is a flow chart of a method for ISR according to a fourth embodiment of the present invention;
FIG. 5A-5B is a flow chart of a method for ISR according to a fifth embodiment of the present invention;
FIG. 6A-6B is a flow chart of a method for ISR according to a sixth embodiment of the present invention;
FIG. 7A-7B is a flow chart of a method for ISR according to a seventh embodiment of the present invention;
FIG. 8A-8B is a flow chart of a method for ISR according to an eighth embodiment of the present invention;
FIG. 9A-9B is a flow chart of a method for ISR according to a ninth embodiment of the present invention;
FIG. 11A-11B is a flow chart of a method for ISR according to an eleventh embodiment of the present invention;
In Step 104, the mobility management network element of the target network determines whether the UE has activated the ISR in the source network; if yes, Step 105 is performed; otherwise, Step 109 is performed.
Mode 1: The mobility management network element of the target network determines whether the TA or RA update request message sent by the UE or a response message including the security vector sent by the mobility management network element of the source network includes the temporary identities assigned to the subscriber by networks based on different access technologies; if yes, the mobility management network element of the target network determines that the UE has activated the ISR in the source network; otherwise, the mobility management network element of the target network determines that the UE has not activated the ISR in the source network.
The UE with the ISR activated includes both temporary identities assigned to the subscriber by the mobility management network elements in two networks based on different access technologies in the request message, or the mobility management network element of the source network includes such both temporary identities in the response message including the security vectors for being sent to the mobility management network element of the target network. For example, the temporary identities include an S-TMSI (assigned by an MME in an EPS network) and a P-TMSI (assigned by an SGSN in a 2G or 3G network), or a TAI (a TA identity in the EPS network) and an RAI (an RA identity in the 2G or 3G network).
Mode 2: The mobility management network element of the target network determines whether the TA or RA update request message sent by the UE or a response message including the security vectors sent by the mobility management network element of the source network includes the ISR status indication information indicating that the ISR status has been activated; if yes, the mobility management network element of the target network determines that the UE has activated the ISR in the source network; otherwise, the mobility management network element of the target network determines that the UE has not activated the ISR in the source network.
In Step 105, the mobility management network element of the target network determines whether the mobility management network element of the target network has the ISR capability; if yes, Step 106 is performed; otherwise, Step 108 is performed.
In Step 107, the mobility management network element of the target network determines whether the UE has successfully activated the ISR in the target network; if yes, Step 109 is performed; otherwise, Step 108 is performed.
Specifically, the bearer update request sent by the mobility management network element of the target network may include the indication information indicating the ISR status of the UE in the target network to the SGW; alternatively, the bearer update request includes the corresponding ISR activation indication information only when the ISR status of the UE in the target network is activated, and otherwise, the request does not include the information. Thus, the SGW considers that the ISR status of the UE in the target network is activated only when the request includes the ISR activation indication information and the ISR activation indication information indicates that the ISR status of the UE is activated.
The RA update is applicable to the situation that the target network is the 2G/3G network and the mobility management network element of the target network is the SGSN, and the TA update is applicable to the situation that the target network is the LTE network and the mobility management network element of the target network is the MME.
FIG. 2 is a flow chart of a method for ISR according to a second embodiment of the present invention. In this embodiment, if a source network and a target network both have ISR capability, a UE can activate an ISR after being handed over to the target network no matter whether the UE has activated the ISR in the source network.
In a handover process before an RA or TA update process, when a mobility management network element of a target network sends a bearer update request to an SGW of the target network, if the mobility management network element of the target network has the ISR capability, through the request message, the mobility management network element of the target network instructs the SGW not to deactivate the ISR that has been activated; in addition, when the ISR is not activated currently, the bearer context information of an access technology side using an access technology different from the current access technology is not overwritten, that is, if the bearer context information of different access technologies exists, both bearer contexts of the two access technologies are reserved at the same time.
In Step 203, the mobility management network element of the target network determines whether it has an ISR capability; if yes, Step 204 is performed; otherwise, Step 207 is performed.
In Step 305, the mobility management network element of the target network returns a forwarding handover response message to the mobility management network element of the source network, in which the forwarding handover response message includes indication information indicating that the ISR status of the UE in the target network is activated.
In Step 311, the mobility management network element of the target network sends a forwarding handover complete message to the mobility management network element of the source network.
In Step 312, the mobility management network element of the source network returns a forwarding handover complete acknowledgement message to the mobility management network element of the target network.
FIG. 4 is a flow chart of a method for ISR according to a fourth embodiment of the present invention. Referring to FIG. 4, in this embodiment, a UE is handed over between networks using different 3GPP access technologies. In this embodiment, if a source network and a target network both have an ISR capability, it is supported that the UE can activate an ISR after being handed over to the target network no matter whether the UE has activated the ISR in the source network.
In Step 405, the mobility management network element of the target network returns a forwarding handover response message to the mobility management network element of the source network, in which the forwarding handover response message includes indication information indicating that the ISR status of the UE in the target network is activated.
In Step 411, the mobility management network element of the target network sends a forwarding handover complete message to the mobility management network element of the source network.
In Step 412, the mobility management network element of the source network returns a forwarding handover complete acknowledgement message to the mobility management network element of the target network.
FIG. 5 is a flow chart of a method for ISR according to a fifth embodiment of the present invention. In this embodiment, the ISR mechanism does not require to establish an association between a mobility management network element of a source network and a mobility management network element of a target network. Furthermore, in this embodiment, it is supported to maintain an ISR activation status of a UE after the UE is handed over to the target network when an ISR of the UE is activated in the source network.
In Step 504, the mobility management network element of the target network returns a forwarding handover response message to the mobility management network element of the source network.
In Step 510, the mobility management network element of the target network sends a forwarding handover complete message to the mobility management network element of the source network.
In Step 511, the mobility management network element of the source network returns a forwarding handover complete acknowledgement message to the mobility management network element of the target network.
In Step 605, the mobility management network element of the target network returns a forwarding handover response message to the mobility management network element of the source network.
In Step 611, the mobility management network element of the target network sends a forwarding handover complete message to the mobility management network element of the source network.
In Step 612, the mobility management network element of the source network returns a forwarding handover complete acknowledgement message to the mobility management network element of the target network.
In Step 703, the mobility management network element of the target network determines whether the UE has activated an ISR in a source network; if yes, Step 704 is performed; otherwise, Step 708 is performed.
In Step 704, the mobility management network element of the target network determines whether the mobility management network element of the target network has an ISR capability; if yes, Step 705 is performed; otherwise, Step 708 is performed.
In Step 706, the mobility management network element of the target network determines whether the UE has successfully activated the ISR in the target network; if yes, Step 708 is performed; otherwise, Step 707 is performed.
In Step 804, the mobility management network element of the target network returns a forwarding handover response message to the mobility management network element of the source network.
In Step 810, the mobility management network element of the target network sends a forwarding handover complete message to the mobility management network element of the source network.
In Step 811, the mobility management network element of the source network returns a forwarding handover complete acknowledgement message to the mobility management network element of the target network.
In Step 901, a source network sends a handover request message to a mobility management network element of the source network, and requests to start a handover, in which the handover request message includes a bearer context to be forwarded.
In Step 904, the mobility management network element of the target network returns a forwarding handover response message to the mobility management network element of the source network.
In Step 910, the mobility management network element of the target network sends a forwarding handover complete message to the mobility management network element of the source network.
In Step 911, the mobility management network element of the source network returns a forwarding handover complete acknowledgement message to the mobility management network element of the target network.
In Step 1003, the mobility management network element of the target network determines whether the mobility management network element of the target network has an ISR capability; if yes, Step 1004 is performed; otherwise, Step 1007 is performed.
In Step 1005, the mobility management network element of the target network determines whether the UE has successfully activated the ISR in the target network; if yes, Step 1007 is performed; otherwise, Step 1006 is performed.
The manner for determining whether the UE has successfully activated the ISR in the target network specifically includes, but not limited to, the following manner.
Specifically, the bearer update request sent by the mobility management network element of the target network may include the indication information indicating the ISR status of the UE in the target network to the SGW; alternatively, the request includes the corresponding ISR activation indication information only when the ISR status of the UE in the target network is activated, and otherwise, the request does not include the information. Thus, the SGW considers that the ISR status of the UE in the target network is activated only when the request includes the ISR activation indication information and the ISR activation indication information indicates that the ISR status of the UE is activated.
In Step 1008, the mobility management network element of the target network sends a TA or RA update accept message including the ISR status indication information to the U E.
FIG. 11 is a flow chart of a method for ISR according to an eleventh embodiment of the present invention. In this embodiment, if a source network and a target network both have an ISR capability, a UE can activate an ISR after being handed over to the target network no matter whether the UE has activated the ISR in the source network.
In Step 1103, the mobility management network element of the target network determines whether it has the ISR capability; if yes, Step 1104 is performed; otherwise, Step 1108 is performed.
In Step 1105, the mobility management network element using the different access technology in the source network interacts with the SGW to notify the SGW to establish the ISR, and returns a context response message to the mobility management network element of the target network, in which the context response message includes an ISR activation result or status information of the mobility management network element using the different access technology in the source network; alternatively, the mobility management network element using the different access technology in the source network directly returns a context response message to the mobility management network element of the target network, in which the context response message includes information about resources for ISR activation allocated by the source network.
In Step 1107, the mobility management network element of the target network sends a bearer update request to the SGW, in which the bearer update request includes the ISR status indication information of the UE in the target network. Specifically, the bearer update request sent by the mobility management network element of the target network may include the indication information indicating the ISR status of the UE in the target network to the SGW; alternatively, the bearer update request includes the corresponding ISR activation indication information only when the ISR status of the UE in the target network is activated, and otherwise, the request does not include the information. Thus, the SGW considers that the ISR status of the UE in the target network is activated only when the message includes the ISR activation indication information and the ISR activation indication information indicates that the ISR status of the UE is activated.
The system for ISR includes a mobility management network element 61 of a target network, a SGW 62 of the target network, a UE 63, and a mobility management network element 64 of a source network.
The UE 63 is configured to send a TA update request message or RA update request message including ISR activation information of the source network to the mobility management network element 61 of the target network.
The mobility management network element 61 of the target network is configured to obtain the ISR activation information of the source network from the UE 63, set an ISR status of the UE in the target network according to the obtained ISR activation information of the source network, and notify the set ISR status of the UE in the target network to the SGW 62 of the target network.
The mobility management network element may further include an obtaining unit 611 and a setting unit 612.
The obtaining unit 611 is configured to obtain the ISR activation information of the source network.
The obtaining unit may further include a UE obtaining unit.
The UE obtaining unit is configured to obtain the ISR activation information of the source network from the TA update request message or RA update request message sent by the UE.
The setting unit 612 is configured to set the ISR status of the UE in the target network according to the ISR activation information of the source network obtained by the obtaining unit 611, and notify the set ISR status of the UE in the target network to the SGW 62 of the target network.
The setting unit may further include a determining unit, an activating unit, and a notifying unit.
The determining unit is configured to determine whether the UE has activated the ISR in the source network and whether the mobility management network element has an ISR capability according to the ISR activation information of the source network obtained by the obtaining unit.
The activating unit is configured to activate the ISR of the UE in the target network when the determining unit determines that the UE has activated the ISR in the source network and the mobility management network element has the ISR capability.
The setting unit may further include an indication message sending unit.
The indication message sending unit is configured to send a bearer update request message to the SGW of the target network if the mobility management network element of the target network has the ISR capability or determines to activate the ISR of the UE in the target network, in which the bearer update request message includes information indicating the SGW of the target network to maintain the current ISR status of a subscriber or information indicating that a current update process is a handover process.
The SGW 62 of the target network is configured to record the ISR status of the UE in the target network set by the mobility management network element 61 of the target network.
The mobility management network element 64 of the source network is configured to interact with the mobility management network element of the target network and exchange about the respective ISR status indication information thereof.
The system for ISR includes a mobility management network element 71 of a target network, a SGW 72 of the target network, and a mobility management network element 73 of a source network.
The mobility management network element 73 of the source network is configured to provide ISR activation information of the source network to the mobility management network element 71 of the target network.
The mobility management network element 71 of the target network is configured to obtain the ISR activation information of the source network from the mobility management network element 73 of the source network, set an ISR status of a UE in the target network according to the obtained ISR activation information of the source network, and notify the set ISR status of the UE in the target network to the SGW 72 of the target network and/or the mobility management network element of the source network and/or the UE.
The mobility management network element may further include an obtaining unit 711 and a setting unit 712.
The obtaining unit 711 is configured to obtain the ISR activation information of the source network.
The obtaining unit may further include a source network obtaining unit.
The setting unit 712 is configured to set the ISR status of the UE in the target network according to the ISR activation information of the source network obtained by the obtaining unit 711, and notify the set ISR status of the UE in the target network to the SGW 72 of the target network and/or the mobility management network element 73 of the source network and/or the UE.
The determining unit is configured to determine whether the source network has an ISR capability according to the ISR activation information of the source network obtained by the obtaining unit.
The SGW 72 of the target network is configured to record the ISR status of the UE in the target network set by the mobility management network element 71 of the target network.
In addition, in an embodiment, the present invention further provides a mobility management network element, which includes a determining unit, an activating unit, and a notifying unit.
In addition, in an embodiment, the present invention further provides a mobility management network element, which includes a determining unit and an activating unit.
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LinMethod and apparatus for improving user experience via payload adaptation* Cited by examinerClassifications U.S. Classification370/331, 455/436International ClassificationH04W36/00Cooperative ClassificationH04W76/045, H04W36/0055European ClassificationH04W36/00P6Legal EventsDateCodeEventDescriptionNov 13, 2009ASAssignmentOwner name: HUAWEI TECHNOLOGIES CO., LTD.,CHINAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HU, WEIHUA;REEL/FRAME:023516/0831Effective date: 20091112Owner name: HUAWEI TECHNOLOGIES CO., LTD., CHINAFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HU, WEIHUA;REEL/FRAME:023516/0831Effective date: 20091112Jul 22, 2015FPAYFee paymentYear of fee payment: 4RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services