Abstract: Disclosed herein is a method for the establishment of a service tunnel in a wireless local area network (WLAN). The method includes a service authentication authorization unit making authentication and authorization to a WLAN user terminal currently requesting a service, and judging whether the authentication and authorization is successful. If successful, the method includes generating service authorization information that includes a shared communication key used for communication between the WLAN user terminal and a destination packet data gateway (PDG), and otherwise ending the procedure. The method further includes the service authentication authorization unit sending to the destination PDG the generated service authorization information including the shared communication key, and the destination PDG, according to the shared communication key, establishing a trust relation with the WLAN user terminal through negotiation with the WLAN user terminal.

Abstract: Disclosed herein is a wireless local area network access gateway (WAG) including a routing enforcement module for enforcing the control of the transmission routing, and a charging module for collecting charging information. The data packets sent via the WAG are outputted to the service authentication and authorization unit or packet data gateway (PDG) of WLAN or the WLAN UE after the forced route processing and collection of charging information. Said WAG further includes a message filtering module for acquiring and storing rule data as well as discriminating, filtering and screening the data packets currently passing the WAG. The message filtering module connects to the routing enforcement module and the charging module. Also disclosed herein is a method for ensuring network security by utilizing the WAG.

Abstract: The present invention discloses a method of counting the number of MBMS subscribers, comprising: setting different types of notifications, each of which is designed to instruct UEs in at least one mode to respond said counting number of subscribers; the network side issuing different types of notifications, so as to monitor the activation of UEs in at least one mode in the MBMS with said notifications, and thereby achieving counting the number of subscribers of each MBMS. The method of counting the number of MBMS subscribers provided in the present invention can be used to perform counting the number of subscribers of each MBMS more accurately, so as to take fuller advantage of the precious air interface resource.

Abstract: The present invention relates to a routing information optimization and control technology in mobile communication. A Gateway Home Location Register (GHLR), comprising a signaling transceiving module, a security rule configuration module, and a routing information security analysis module. A method of exchanging roaming subscriber routing information, comprising: the GHLR in the home network receiving a information request and determining the request according to the security rules in GHLR; if the request is accordant to the security rules in GHLR, GHLR sending called information to the network element capable of fetching subscriber routing information in the visited network.

Abstract: Disclosed is a method for processing the service connection between a user terminal and a Wireless Local Area Network (WLAN) applicable to a WLAN interactive network that at least comprises: a WLAN user terminal, a WLAN access unit, a service control unit and a user information storage unit. The method comprises: setting flags that represent the attached or detached status of the service connection between the user terminal and the WLAN in the WLAN user terminal and the service control unit respectively; establishing or canceling the connection between the user terminal and the network through the interaction between the WLAN user terminal and the WLAN, meanwhile modifying the corresponding flags.

Abstract: The invention discloses a WLAN service system for charging based on the user data flow, and the system includes: a WLAN user equipment, a WLAN access network, a Packet Data Gateway and a charging service unit that generates charging information and is connected with the Packet Data Gateway; the invention also discloses a charging method based on the user data flow, and in this method a Packet Data Gateway takes statistic for the current user data flow to obtain original data flow information that is then transmitted to the charging service unit; having received the original charging related information, the charging service unit generates charging information that is then transferred to a charging system. With this system and method, packet data passing through the Packet Data Gateway can be charged based on the data flow.

Abstract: A method for implementing presence information interaction of WLAN (Wireless Local Area Network) subscriber and the system and terminal thereof, wherein, the method comprises setting one or more than one presence information monitoring unit, detecting the presence information by the presence information monitoring unit, and transmitting this presence information to a PRESENCE service system. The system thereof comprises a presence information monitoring unit, a WLAN network and PRESENCE service system, wherein input of the presence information monitoring unit is connected with WLAN network and the output is connected with PRESENCE service system. The terminal thereof also comprises a presence information monitoring unit, which is connected with PRESENCE service system through WLAN.

Abstract: A method for processing subscription information in a Wireless Local Area Network (WLAN), applicable to a WLAN interactive network mainly composed of WLAN user terminals, a WLAN access unit, a subscription information application unit and a subscription information storage unit, including the following steps: when the subscription information of a user terminal stored in the subscription information application unit is to be deleted, the subscription information application unit determining whether the deletion is instructed by the subscription information storage unit; if so, deleting the subscription information according to the instruction and ending the procedure; otherwise, sending a notification of purging the WLAN subscriber relevant information to the subscription information storage unit after deleting the subscription information; after receiving the notification, the subscription information storage unit recording the notified information.

Abstract: A CRP and a CRP method related to the mobile communication field. Said CRP comprises: a voice bear and signaling management module, a call access control module, a message processing module, and a waiting call data storage module. Said CRP method initiates the request to the CRP, which informs the roaming subscriber to call back and then performs switching for the calling subscriber and the called subscriber, so that both the calling subscriber and the calling subscriber are regarded as the calling party from the viewpoint of the CRP; thus it avoids the roaming subscriber being treated as the called party. Above device and method can avoid the roaming subscriber being treated as the called party; therefore, the device and method can save unnecessary long distance call cost for the calling party and the called party and improve session quality for roaming subscribers.

Abstract: The present invention discloses a user positioning system for Wireless Local Area Network (WLAN), comprising more than one User Equipment (UE) and a WLAN access part, and further comprising a positioning management subsystem for acquiring position information of WLAN users and providing the desired user position information to an application client which requests position information to the positioning management subsystem. Here, the positioning management subsystem is connected with both of the UEs and the application client. The positioning management subsystem further comprises a management unit for controlling information interaction course inside the positioning management subsystem and that between the positioning management subsystem and the outside, and a positioning information detection unit connected with said managing unit and used for acquiring user's position information and detecting change of user's position information.

Abstract: One embodiment of the present invention is a fuel cell suitable for use downhole in an oil and gas well includes a fuel vessel that providing a source of fuel and an oxidant vessel providing a source of oxidant. A reaction zone comprises at least one cathode, at least one anode, and an electrolyte between each anode and cathode. A closed water vessel is connected to the reaction zone by at least one capillary flow path. The fuel cell also comprises a fuel conduit that connects the fuel vessel and the reaction zone. This fuel conduit comprises a fuel pressure control apparatus adapted to maintain a static pressure of fuel in the reaction zone. The fuel cell further comprises an oxidant conduit that connects the oxidant vessel and the reaction zone, and includes an oxidant pressure control apparatus adapted to maintain a static pressure of oxidant in the reaction zone.

Abstract: One embodiment of the present invention is a fuel cell suitable for use downhole in an oil and gas well includes a fuel vessel that providing a source of fuel and an oxidant vessel providing a source of oxidant. A reaction zone comprises at least one cathode, at least one anode, and an electrolyte between each anode and cathode. A closed water vessel is connected to the reaction zone by at least one capillary flow path. The fuel cell also comprises a fuel conduit that connects the fuel vessel and the reaction zone. This fuel conduit comprises a fuel pressure control apparatus adapted to maintain a static pressure of fuel in the reaction zone. The fuel cell further comprises an oxidant conduit that connects the oxidant vessel and the reaction zone, and includes an oxidant pressure control apparatus adapted to maintain a static pressure of oxidant in the reaction zone.

Abstract: This invention relates to fuel cells, and in one embodiment, to fuel cells that are especially well suited for downhole use in oil and gas wells, and for subsea use in connection with offshore wells.

Abstract: A subsea fuel cell and system adapted for long duration use. The subsea fuel cell comprises a fuel cell stack and a water discharge system. In alternate embodiments, the subsea fuel cell can further comprise an impurity discharge system.

Abstract: This invention relates to fuel cells, and in one embodiment, to fuel cells that are especially well suited for downhole use in oil and gas wells, and for subsea use in connection with offshore wells.

Abstract: One embodiment of the present invention is a fuel cell suitable for use downhole in an oil and gas well includes a fuel vessel that providing a source of fuel and an oxidant vessel providing a source of oxidant. A reaction zone comprises at least one cathode, at least one anode, and an electrolyte between each anode and cathode. A closed water vessel is connected to the reaction zone by at least one capillary flow path. The fuel cell also comprises a fuel conduit that connects the fuel vessel and the reaction zone. This fuel conduit comprises a fuel pressure control apparatus adapted to maintain a static pressure of fuel in the reaction zone. The fuel cell further comprises an oxidant conduit that connects the oxidant vessel and the reaction zone, and includes an oxidant pressure control apparatus adapted to maintain a static pressure of oxidant in the reaction zone.

Abstract: This invention relates to fuel cells, and in one embodiment, to fuel cells that are especially well suited for downhole use in oil and gas wells, and for subsea use in connection with offshore wells.