Patent application number | Description | Published |
20090218994 | Resonance DC/DC Converter and Control Method Thereof - The present invention refers to a method for controlling a resonance DC/DC converter, which adjusts an output voltage by changing a turn-on frequency of input switch devices of a resonance circuit of the converter, and extends the range of the output voltage of the resonance circuit by adjusting the duty ratio of the switch devices based on the feedback signal of the load circuit. The present invention also provides the resonance DC/DC converter structure using the controlling method. The advantage of the present invention lies in the use of two modes of frequency modulation and frequency modulation plus pulse width modulation to control the resonance DC/DC converter; the use of the frequency modulation controlling mode when the operating frequency of the power supply is low, and introducing the frequency modulation plus pulse width modulation controlling mode when the operating frequency of the power supply is too high. As a result, the problem of the resonance converter, that is, the high operating frequency and the big loss of the circuit when the circuit operates at a light load and non-load, can be solved, and thus the regulation ability for the output voltage of the resonance circuit is enormously improved, and the output range of the voltage is effectively expanded. | 09-03-2009 |
20110103340 | Method and System for Realizing Network Switching, and a Mobile Node - A method and system for realizing network switching, and a mobile node are provided. The method comprises: a Local Mobility Anchor receives a Proxy Binding Update message from a second mobile access gateway, wherein the Proxy Binding Update message carries identifier information of the mobile node, the IP address of a first interface, and the IP address of the second mobile access gateway (S | 05-05-2011 |
Patent application number | Description | Published |
20110009160 | Method And Apparatus For Discovering A Home Link In Mobile IP - The present invention provides a method and apparatus for discovering a home link in mobile IP, wherein the method includes: an access network assigns an address for a UE when the UE is attached to the network; the UE acquires a home address from the network; the UE compares the address assigned by the access network with the home address, and confirms that the UE is attached to the home link in the case that the address assigned by the access network and the home address are the same. Therefore, with the present invention, it is not necessary to configure the UE in advance, and the participation of the user is also not required. Thus improved application flexibility is provided. | 01-13-2011 |
20120135701 | Method and system for paging an emergency service user - The present disclosure discloses a method for paging an emergency service user. When a mobility management unit is configured to support the paging optimization in a core network, the mobility management unit does not perform paging optimization when a UE has an emergency bearer service. That is to say, a paging message is sent to all base stations (including the CSG-mode home base station that does not authorize the UE) in the paging tracking list registered by the UE. A core network gateway can notify the mobility management unit of whether the UE has an emergency bearer service. Alternatively, the mobility management unit configured to use the paging optimization, after learning that the service data is to be sent to the UE, checks the current service type of the UE to determine whether the UE has an emergency bearer service. Accordingly, the present disclosure further discloses a system for paging an emergency service user. The present disclosure solves the problem that the mobility management unit and home base station gateway using the paging optimization cannot page the UE which uses the emergency service, so as to increase the success rate of establishing communications and improve the user experience. | 05-31-2012 |
20120140368 | Hardware Overvoltage Disconnecting Circuit - A hardware overvoltage disconnecting circuit wherein a DC power supply module is disconnected from a power network when the AC power network is in the state of overvoltage. The circuit includes a disconnecting relay and a voltage detection circuit. The disconnecting relay is connected in series between an AC power network and a power factor correction circuit of a power supply module. A first sampling terminal of the voltage detection circuit samples the voltage of the AC power network between the AC power network and the disconnecting relay, and an output of the voltage detection circuit is connected to a control terminal of the disconnecting relay. When the AC power network is in the state of overvoltage, the disconnecting relay is disconnected and the power supply module is disconnected from the AC power network. When the voltage of the AC power network is normal, the disconnecting relay is connected. | 06-07-2012 |
20120210392 | ACCESS METHOD AND ACCESS DEVICE - An access method and an access device are provided in the invention, and the method includes the step of: an Authentication, Authorization and Accounting (AAA) server sending indication information to a Wireless Local Area Network Access Network (WLAN AN), wherein the indication information is used for indicating that the WLAN AN determines the direct accessing by a user equipment to the Internet without passing through an Evolved Packet Core (EPC) network. The user experience can be improved by the invention. | 08-16-2012 |
20120231760 | Evolved Packet System and Method for Processing Emergency Call Attachment Thereof - The disclosure discloses an evolved packet system and a method for processing an emergency call attachment thereof, wherein the method comprises: a NodeB selects one PLMN from those Public Land Mobile-communication Networks (PLMN) supporting emergency calls according to an emergency call request message received from a UE which is in a restricted state; the NodeB sends information of the selected PLMN to the UE through a Radio Resource Control (RRC) connection establishment message; and the UE uses the information to establish attachment with the selected PLMN. In the disclosure, it can be ensured that the PLMN to which the User Equipment (UE) selects to attach supports an emergency call, and it can be ensured that Kasmes generated by the UE and the Mobility Management Entity (MME) are consistent during the Authentication and Key Agreement (AKA) flow, so that the success of the emergency call can be guaranteed. | 09-13-2012 |
20120282941 | Method and system for synchronizing user data - A method for synchronizing user data is provided, which includes: when a User Equipment (UE) moves into a coverage area of a new mobility management unit, an old mobility management unit sends an indication of whether a bearer modification procedure is to be triggered to the new mobility management unit, and the new mobility management unit determines whether to trigger the bearer modification procedure according to the indication. A system for synchronizing user data is further provided. By means of the technical solution of the method and the system, the situation that a Quality of Service (QoS) used by a bearer in the new mobility management unit does not match with a bearer QoS of an updated subscription data when a user equipment moves into a coverage area of a new mobility management unit can be avoided. | 11-08-2012 |
20130143515 | Method and system for processing prior services - The disclosure discloses a method and a system for processing prior services, the method includes that: an eNB and/or an MME carries a service priority indication in a message sent to a UE in mobile terminating call procedures for CSFB; and the UE sends a GERAN or a UTRAN a priority indication corresponding to a service when the GERAN or the UTRAN initiates the service. With the disclosure, a source network E-UTRAN can take full advantage of an existing message to carry service information to notify a UE, the UE forwards the information to a target network GERAN/UTRAN, so as to avoid failure of a high priority service in the target network. | 06-06-2013 |
20140341203 | Trusted Non-3GPP Access Network Element, and Method for Accessing Mobile Network and De-Attachment - A trusted non-3GPP access network element and a method for accessing a mobile network and detachment are disclosed. The method for accessing a mobile network includes: a TNAN network element receives an extensible authentication protocol (EAP) authentication success message or an EAP authentication success triggering message, and then establishes a session with a packet data network gateway (P-GW) of a mobile network; and the TNAN network element receives an IP address request message from user equipment and then allocates an IP address consistent with the packet data network (PDN) type requested by the user equipment to the user equipment. | 11-20-2014 |
20140355541 | Method, device and system for accessing core network by means of non-3GPP access - A method, device and system for accessing a core network by means of non-3rd Generation Partnership Project (3GPP) access are disclosed, so as to acquire capability information of a User Equipment (UE) and/or capability information of a non-3GPP access system, and decide, according to the acquired capability information, whether the UE transfers information required for establishing an Evolved Packet Core (EPC) session. The disclosure can enhance the capability of the UE to support establishment of an extra Packet Data Network (PDN) connection and service continuity during switching between access systems. Meanwhile, the capability of a peer can be acquired through the UE and a network, so that the network may support normal access by an existing UE and an enhanced UE simultaneously. | 12-04-2014 |
20150223041 | Accounting Method and Device - An accounting method and device are disclosed in the disclosure. The method includes that: a BNG transmits a second Accounting-Request message to an AAA server after receiving a first Accounting-Request message from an AC, wherein the first Accounting-Request message is used for activating the BNG to execute an accounting operation; and the BNG transmits a second Accounting-Stop message to the AAA server after receiving a first Accounting-Stop message from the AC, wherein the first Accounting-Stop message is used for activating the BNG to stop the accounting operation. By the disclosure, the problem that the function division of the AC and the BNG is not yet clear during the accounting operation in the related art is solved, so that functions of the AC and the BNG are clearly divided during the accounting operation, an accounting operation flow is further made clear, and the accounting efficiency is improved. | 08-06-2015 |
20150237594 | METHOD AND SYSTEM FOR NOTIFYING ACCESS NETWORK POSITION INFORMATION - A method and a system for notifying access network location information are provided. The method includes that in a PMIPv6 architecture, a Mobile Access Gateway (MAG) sends a circuit ID to a Local Mobility Anchor (LMA) by carrying the circuit ID in a proxy binding update message; and in a GTP architecture, a local GTP peer sends a circuit ID to a correspondent GTP peer by carrying the circuit ID in a Create Session Request message, a Modify Bearer Request message or a Delete Session Request message. In the disclosure, an MAG can notify an LMA of access network location information of a UE in a PMIPv6 architecture, and a GTP peer can notify a correspondent GTP peer of access network location information of a UE in a GTP architecture. | 08-20-2015 |
20150296445 | METHOD, DEVICE AND SYSTEM FOR MANAGING PACKET DATA NETWORK TYPE - A method, device and system for managing a packet data network type management are disclosed. The method comprises: a User Equipment, UE, sends a request message to a WLAN AN, wherein the request message carries a packet data network type requested by the UE; the UE receives an acknowledgement message returned by the WLAN AN to the UE, wherein the acknowledgement message carries a packet data network type decided by a network side. It is solved the technical problem in the related art of the waste of the address resources, which is caused by the fact that the addresses corresponding to the packet data network type subscribed by the user in the subscription information are all directly allocated to the UE in advance, thereby achieving the technical effects of reducing the wasted address resources and improving the address resource utilization rate. | 10-15-2015 |
Patent application number | Description | Published |
20090161594 | HYBRID MULTICAST ROUTING PROTOCOL FOR WIRELESS MESH NETWORKS - A method of multicast routing in a wireless mesh network is provided. One implementation involves maintaining a multicast logical tree having a structure establishing parent-child connectivity relationships between wireless station nodes, wherein each node has access to local connectivity information for its local nodes; and a wireless station node joining a multicast group in the network and becoming the group coordinator. Each multicast group member may join and leave the group at any time utilizing both tree structure and local link state information. | 06-25-2009 |
20100142423 | METHOD AND SYSTEM OF RADIO FREQUENCY (RF) POWER TRANSMISSION IN A WIRELESS NETWORK - A method and system of radio frequency (RF) power transmission among multiple wireless stations is provided. Control signals for switching a receiving station between a power reception mode and a data reception mode are generated. The control signals provide switching information about which of the modes to switch to, and timing of the switching. In the data reception mode, the receiving station processes an RF transmission from a sending station as a data communication. In the power reception mode the receiving station processes the RF transmission as energy radiation for powering the receiving station. One type of control signal for power mode switching is generated at the MAC layer of a receiving station and sent to the PHY layer of that station for power mode switching. Another type is RTS/CTS control signal exchanged between the sending and receiving stations. | 06-10-2010 |
20100142509 | METHOD AND SYSTEM FOR INTEGRATED WIRELESS POWER AND DATA COMMUNICATION - A method and system of integrated wireless power and data transmission in a wireless device having a data communication circuit for wireless data communication and a power reception circuit including a charge storage unit. The wireless device is tuned to receive wireless RF signals in a certain frequency band via an antenna. Switching between power reception mode and data communication mode is detected. Received RF signal electrical charge is selectively distributed to the power reception circuit and/or the data communication circuit based on the switching mode and/or strength of the RF signal. | 06-10-2010 |
20110255618 | METHOD AND SYSTEM FOR MULTI-USER TRANSMIT OPPORTUNITY FOR MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT WIRELESS NETWORKS - Wireless communication in a wireless system using a multiple user transmission opportunity is provided. Data blocks at a wireless station are transmitted to multiple wireless receivers over a shared wireless communication medium. The data blocks are organized in order of transmission priority based on access categories. Contention for access to the communication medium during a transmission opportunity period is based on a backoff timer of each access category and the transmission priority. Upon successful contention for a transmission opportunity period, during the transmission opportunity period, a data block of a primary access category is wirelessly transmitted from the wireless station to one or more primary destination wireless receivers. Simultaneously, a data block of a secondary access category is wirelessly transmitted from the wireless station to one or more secondary destination wireless receivers. | 10-20-2011 |
20110317630 | METHOD AND SYSTEM FOR CONTENTION AVOIDANCE IN MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT WIRELESS NETWORKS - Wireless medium reservation for simultaneous transmission of multiple downlink spatial streams to multiple receiver wireless stations during a multi-user transmit opportunity over a wireless medium, is provided. Such a reservation includes reserving a transmission period for simultaneously transmitting data from a transmitting station to multiple intended receiving stations on multiple downlink spatial streams over a wireless communication medium. Reserving the transmission period includes transmitting a request-to-send (RTS) frame to the multiple receiving stations, the RTS frame including a receiver address (RA) field comprising compressed addresses for the multiple receiving stations. | 12-29-2011 |
20120008490 | METHOD AND SYSTEM FOR COMMUNICATION IN MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT WIRELESS NETWORKS - Wireless communication in a wireless system using a multiple user transmission opportunity is provided. The data blocks are organized in order of transmission priority based on access categories. Contention for access to the communication medium during a transmission opportunity period is based on a backoff timer of each access category and the transmission priority. Upon successful contention for a transmission opportunity period, during the transmission opportunity period, a data block of a primary access category is wirelessly transmitted from the wireless station to one or more primary destination wireless receivers. Simultaneously, a data block of a secondary access category is wirelessly transmitted from the wireless station to one or more secondary destination wireless receivers. Contending for the transmission opportunity period includes each access category contending for access to the wireless communication medium and a secondary access category selectively invoking communication medium access backoff based on one or more backoff events. | 01-12-2012 |
20120087358 | METHOD AND SYSTEM FOR ENHANCED CONTENTION AVOIDANCE IN MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT WIRELESS NETWORKS - Wireless medium reservation for simultaneous transmission of multiple downlink spatial streams to multiple receiver wireless stations during a multi-user transmit opportunity over a wireless medium, is provided. Such a reservation includes reserving a transmission period for simultaneously transmitting data from a transmitting station to multiple intended receiving stations on multiple downlink spatial streams over a wireless communication medium. Reserving the transmission period includes transmitting a multi-user request-to-send (MU-RTS) frame to the multiple receiving stations, the RTS frame including a receiver address (RA) field comprising compressed addresses for the multiple receiving stations. The MU-RTS frame includes an indication field that indicates the RTS frame as an MU-RTS without altering the RTS frame type/subtype. | 04-12-2012 |
20120207071 | ENHANCED POWER SAVE MULTI-POLL (PSMP) PROTOCOL FOR MULTI-USER MIMO BASED WIRELESS LOCAL AREA NETWORKS - Wireless communication in a wireless communication system, comprises maintaining data blocks at a wireless transmitting station for transmission to multiple wireless receiving stations over a shared wireless communication medium, and simultaneously transmitting data blocks from the transmitting station over multiple spatial streams to multiple destination wireless receiving stations in a power save multi-poll (PSMP) sequence, via the wireless communication medium. | 08-16-2012 |
20120214534 | METHOD AND SYSTEM OF RADIO FREQUENCY (RF) POWER TRANSMISSION IN A WIRELESS NETWORK - A method and system of radio frequency (RF) power transmission among multiple wireless stations is provided. Control signals for switching a receiving station between a power reception mode and a data reception mode are generated. The control signals provide switching information about which of the modes to switch to, and timing of the switching. In the data reception mode, the receiving station processes an RF transmission from a sending station as a data communication. In the power reception mode the receiving station processes the RF transmission as energy radiation for powering the receiving station. One type of control signal for power mode switching is generated at the MAC layer of a receiving station and sent to the PHY layer of that station for power mode switching. Another type is RTS/CTS control signal exchanged between the sending and receiving stations. | 08-23-2012 |
20130210378 | METHOD AND SYSTEM FOR INTEGRATED WIRELESS POWER AND DATA COMMUNICATION - A method and system of integrated wireless power and data transmission in a wireless device having a data communication circuit for wireless data communication and a power reception circuit including a charge storage unit. The wireless device is tuned to receive wireless RF signals in a certain frequency band via an antenna. Switching between power reception mode and data communication mode is detected. Received RF signal electrical charge is selectively distributed to the power reception circuit and/or the data communication circuit based on the switching mode and/or strength of the RF signal. | 08-15-2013 |
20140119288 | METHOD AND SYSTEM FOR UPLINK MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT COMMUNICATION IN WIRELESS NETWORKS - Wireless communication in a wireless network comprises a wireless station obtaining a transmission opportunity period (TXOP) for communicating with an access point (AP) over a wireless communication channel. The wireless station sends an announcement to the AP to share the transmission opportunity period with at least another wireless station, as a multi-user transmission opportunity period for simultaneously transmitting data from said wireless stations to the AP on multiple uplink (UL) spatial streams over the wireless channel. | 05-01-2014 |
20140269474 | POWER SAVING FOR LOW LATENCY DETERMINISTIC NETWORKS IN WIRELESS PERSONAL AREA NETWORKS - Wireless communication in a wireless network comprises a wireless device communicating power save capability information with a coordinator during a discovery state. A beacon that indicates a configuration state is received by the wireless device. Configuration status information is sent to the coordinator. A configuration request is received by the wireless device from the coordinator for entering or exiting the power save mode. | 09-18-2014 |
20140269544 | TRANSMISSION OPPORTUNITY OPERATION OF UPLINK MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT COMMUNICATION IN WIRELESS NETWORKS - Wireless communication in a wireless network comprises a wireless station obtaining a transmission opportunity period (TXOP) for communicating with an access point (AP) over a wireless communication channel. The wireless station sends an announcement to the AP to share the transmission opportunity period with at least another wireless station, as a multi-user transmission opportunity period for simultaneously transmitting data from said wireless stations to the AP on multiple uplink (UL) spatial streams over the wireless channel. UL TXOP transmission information is communicated based on one or more indications included in a quality of service (QoS) data frame and a frame header. | 09-18-2014 |
20150071051 | ACKNOWLEDGEMENT, ERROR RECOVERY AND BACKOFF OPERATION OF UPLINK MULTI-USER MULTIPLE-INPUT-MULTIPLE-OUTPUT COMMUNICATION IN WIRELESS NETWORKS - Wireless communication in a wireless network comprises obtaining a transmission opportunity period (TXOP) for communicating with an access point (AP) over a wireless communication channel. An announcement is sent to the AP to share the transmission opportunity period among wireless stations, as a multi-user transmission opportunity period for simultaneously transmitting data from said wireless stations to the AP on multiple uplink (UL) spatial streams over the wireless channel. Correctly received UL frames received by the AP are acknowledged. Error recovery and backoff processing are performed upon loss of communication information based on frame type. | 03-12-2015 |