821 results about "Handoff control" patented technology

A mobile supporting router device for realizing the handoff control associated with the moving in high speed is forms by at least one first interface connected with radio base stations, each capable of accommodating at least one mobile terminal; at least one second interface connected with a wire network; an information exchanging unit for exchanging a routing protocol on a network layer, through the second interface; a memory unit for storing information regarding a routing on the network layer based on the routing protocol exchanged by the information exchanging unit; a transfer unit for transferring datagram through the first interface according to the information regarding the routing on the network layer stored in the memory unit; a moving detection unit for detecting a moving of the mobile terminal among the radio base stations; and an information updating unit for updating the information regarding the routing on the network layer stored in the memory unit when the moving of the mobile terminal is detected by the moving detection unit.

An idle handoff controlling method effectively reduces the number of idle handoff processes in a cellular communication system. In the method, a first pilot channel having the strongest strength transmitted from one of a plurality of base stations as an active base station is searched and a strength of the first pilot channel is measured. A variable threshold value based on the first pilot channel strength is calculated. A paging channel having a neighbor list having a plurality of neighbor base stations is monitored in synchronization with the first pilot channel. A strength of a second pilot signal transmitted from one of the plurality of neighbor base stations is measured. The first pilot channel strength from the second pilot channel strength is subtracted to obtain a strength difference. It is judged whether the strength difference is greater than the variable threshold value. Performance of an idle handoff according to the judgement result is controlled. In the method, by reducing the number of the idle handoff in a cellular communication system, waste of a battery of the mobile station is reduced, arrival rate of the mobile station is increased, and communication efficiency of a reverse control channel becomes higher.

To achieve a secure and fast handover in a distributed mobile communication environment (10), the control functionality is lying at the borderline between wireless and wire-bound communication network elements, and it is proposed to, firstly, execute a mutual authentication between a mobile device (26) and a new access point (14) using security context information previously transmitted to the new access point. Then, after successful mutual authentication, a handover will be executed from the current access point (12) to the new access point (14).

The invention provides a wide range of switching control methods, in which, one of the switching control method includes the following steps: Step S302, the target base station determines to access to the user-equipment and sends switching instructions to referred user-equipment when receiving request for switching from user-equipment. Step S304, when the user-equipment receives the request for switching, without cutting off the source of the wireless link connecting of source base station, the user-equipment launches the same synchronizing establishing process with the target base station, and the source base station transmits the transmitting user-data to the target base station. Step S306, the user-equipment cuts off the connection with the source base station after their synchronous access process, the user-equipment sends the transmitted correct serial number to the target base station. Step S308, the target base station determines the starting position of data transmission the user-equipment. Step S310, the user-equipment and the target base station establish connection and communication.

The present invention relates to a wireless interface device and more particularly to a wireless interface device for interfacing with a host computer connected in either a wired or wireless local area network. Once a connection is made between the wireless interface device and a host computer, the host computer is under the control of the wireless interface device. In order to provide a convenient way to return control back to the host computer, a hot icon is provided on the wireless interface device which, in response to a pen-down event, automatically returns the control back to the host computer.

A handoff control process in a wireless ATM network replaces an old communications connection with a new communication connection. In order to guarantee that no data is lost during the replacement process, an ATM cell level mechanism is used to re-schedule the buffering and transmitting of data streams of the virtual channels (VCs) to be handed-off. In addition, this mechanism is transparent to user applications. The present invention performs three fundamental cell level scheduling functions. The first function is to mark and redirect cell transmission with operation and maintenance (OAM) cells. The second function is to disable and buffer cell transmission until the new path is connected. The third function is to enable cell transmission, starting with the buffered cells across the connected new path.

A secret communications system realizes point-to-multipoint or multipoint-to-multipoint connections of both quantum channels and classical channels. Multiple remote nodes are individually connected to a center node through optical fiber, and random-number strings K1 to KN are individually generated and shared between the respective remote nodes and the center node. Encrypted communication is performed between each remote node and the center node by using the corresponding one of the shared random-number strings K1 to KN as a cryptographic key. The center node is provided with a switch section for quantum channels and a switch section for classical channels. Switching control on each of these switch sections is performed independently of the other by a controller.

A configurable game controller according to the present invention selectively assigns functions within a gaming application to controller input devices. The controller includes input devices, signal sources, a switching device and a switch control unit. The input devices are each coupled to a corresponding signal source that detects or measures manipulation of the corresponding input device and produces a signal indicating the measurement. The signals produced by the signal sources are processed by a signal processor whose inputs are associated in a fixed manner with game functions. The switching device receives information from each signal source and provides the appropriate signals to the signal processor inputs to attain the desired configuration or function assignment received from the user via the switch control unit. In addition, the configurable controller may be utilized with an exercise device to enable exercise and / or controller input devices to control gaming functions.

A system and method for the switching of control between redundant controllers is presented. The status of the redundant controllers is monitored to determine if switching of control between controllers is required. The monitoring and switching system is hardware based with control being implemented via a state machine.

According to the invention, better requests resulting in the load being under a first predetermined limit are admitted. If a bearer request would result in the load being over the first predetermined limit, the admission control entity tries to make room for the bearer request, i.e. release resources without degrading the quality of service (QoS) provided for the existing bearers. The admission control entity may perform this by adjusting power control parameters, handover control parameters, or both. If the admission control entity is able to make enough room for the new bearer or bearers, the request is admitted.

A wireless office communication system including a wireless internet base station (WIBS) encompassing a base station controller, a mobile switch controller and an ethernet interface module for coupling the WIBS to an existing internet protocol (IP) based network. A wireless office communication system can also be based on the conventional architecture comprising the BTS, BSC and MSC. The WIBS or BTS is attached to a number of antennas via different and identifiable delay elements for the purpose of determining the serving antennas of mobile communication units. A location determination logic enables the system to handle handoffs between a WIBS or BTS and the external public communication system in an optimum manner. Handling handoff requests in this manner prevents unnecessary ping-ponging of handoff and can also increase the percentage of successful handoff by frequency monitoring of the quality of the mobile communication units located in the handoff transition area, particularly to the public communication system.

A base station for use in a 1xEV-DV / DO wireless network that communicates with mobile stations in its coverage area. The base station comprises a handoff controller for receiving a Handoff Request message from a first mobile station attempting to hand off to the base station. In response to receipt of the Handoff Request message, the handoff controller determines whether the available resources in the base station exceed a predetermined minimum threshold. If the available resources exceed the predetermined minimum threshold, the handoff controller allows the first mobile station to be handed off to the base station. Otherwise, the handoff controller prevents the first mobile station from being handed off to the base station.

In a telecommunications network in which a mobile handset is capable of communicating in both an IP domain and a non-IP domain, the handoff of an existing communications session between the mobile handset and a fixed user is facilitated by a handoff controller implemented in a service control point. The handoff controller implements different handoff methods depending on the status of the fixed user and the transition of the mobile user. Additionally 802.21 Media Independent Handover Function in conjunction with SIP is used to facilitate handover between IP and Non-IP points in the system.

A total number of unnecessary handover control operations is reduced. Distances between a mobile communication terminal and respective plural base stations located at peripheral areas thereof, a move direction and a move speed of the mobile communication terminal are obtained by a positional information detecting unit 121, a distance calculating unit 122, and a move direction and move speed calculating unit 123. Furthermore, conditions of fading deteriorations in the respective plural and peripheral base stations are acquired by a transfer path quality detecting unit 124. Then, an offset value with respect to a reception level as to each of the plural and peripheral base stations is calculated by way of an offset calculate unit 125 based upon the various sorts of parameters which have been obtained. Then, such a base station which constitutes a handover destination is selected by a handover destination selecting unit 126 based upon the offset values with respect to the plural and peripheral base stations which have been calculated, and the reception signal levels with respect to the plural and peripheral base stations.

The present invention provides a versatile system for providing a current-mode switching controller—in low voltage commercial semiconductor technologies—that is compatible with applications having very high input voltage ranges. The system provides an output transistor and a sense element coupled to the output transistor. A waveform representative of current charging across the sense element is recognized. First and second charging elements are provided, and the second charging element is adapted to charge at a rate twice as fast as the first charging element. First and second switching elements, coupled to the first and second charging elements, respectively, are adapted to activate the first and second charging elements responsive to a rising edge of the waveform. An output charge element is provided, and a sample and hold construct is adapted to transfer a charge value—to the output charge element—that corresponds to an average of the charge values of the first and second charging elements upon a falling edge of the waveform.

The embodiment of the invention discloses a radio-frequency module, a transceiver and a method for switching control of the transceiver. The radio-frequency module comprises a first receiving amplification branch, a first receiving frequency mixer, a second receiving frequency mixer, a frequency mixing switching module and a control module, wherein the first receiving amplification branch is connected with the first receiving frequency mixer; the frequency of a local oscillation signal adopted by the first receiving frequency mixer is more than, less than or equal to that of a local oscillation signal adopted by the second receiving frequency mixer; and the control module is used for controlling the frequency mixing switching module to establish a connection between the first receiving amplification branch and the second frequency receiving mixer, or controlling the frequency mixing switching module to switch off the connection between the first receiving amplification branch and the second receiving frequency mixer. In the technical proposal provided by the embodiment of the invention, the radio-frequency module of the transceiver adopts an expandable framework, can expand the framework and switch working modes as required, and can adapt to various application scenes.

The present invention relates to base stations, methods in a base station, terminals and methods in a terminal for supporting a handover. The invention further relates to computer programs for implementing, in the respective nodes of a wireless network, functionality for supporting a handover. According to one embodiment, a method in a source base station for supporting a handover of a terminal from the source base station to a target base station is provided. The method includes sending to an assisting base station a request for assisting the handover, and communicating handover control information between the terminal and the source base station via the assisting base station.

In a mobile communication system, a handover of a terminal device (MT) from a macrocell base station (eNB) to a small cell base station (HeNB) is controlled via a host device (MME or HeNB-GW). Physical cell ID deployment map information (PCI deployment map information), which includes at least information (PCI / CGI map information) indicating the correspondences between physical cell IDs and unique cell IDs of CSG cells for which access is granted, is generated in the host device (MME or HeNB-GW). When the terminal device measures the reception quality for surrounding CSG cells for handover control to any of the CSG cells, the terminal device uses the PCI deployment map information to generate a measurement result report. Thus, a service interruption caused by handover control to an inaccessible small cell can be avoided, and the wait time for handover control can be reduced.

The invention relates to a stable tracking control system for a satellite communication antenna for a motion carrier, comprising an embedded antenna controller, an attitude sensor, a high-frequency signal processor, a GPS receiver, a directional integrated driving and controlling motor, a pitching integrated driving and controlling motor, a rolling integrated driving and controlling motor, a mechanical transmission device and a satellite communication antenna. An output shaft of the designed integrated driving and controlling motor can directly drive the antenna so as to simplify the system structure and facilitate the mounting and the maintenance; various main parts of the system and user operation terminals are connected by a field bus mode so as to simplify the connection complexity and benefit the networking work of a plurality of antenna systems; and a novel switching control algorithm based on a switching control theory is designed to improve the control performance of the system. The invention can effectively ensure the indication stability and the tracking performance of the satellite communication antenna on the motion carrier.

A controller enabling switching between a smart function and an immobilizer function without using a key cylinder or a slot. The controller includes a verification ECU for transmitting a request signal to a first area and transmitting a transponder drive radio wave to a second area. The portable device transmits an ID code signal in response to the request signal or the transponder drive radio wave. The verification ECU enables the starting of an engine when the ID code transmitted from the portable device matches an ID code of the controller. The verification ECU transmits the drive radio wave when a driver operates a switch in a state in which the starting of the engine is not enabled after the request signal is transmitted.

First, the strength A of a first pilot signal currently transmitted by a base station and strength B of a second pilot signal transmitted by a base station other than the foregoing base station are measured, the correction value D of a handoff threshold value according to the multicast service availability and radio configuration information of the multicast content is obtained, and handoff threshold value C is obtained, as well. Next, if the difference between the strength B of the second pilot signal and the strength A of the first pilot signal is greater than the sum of the handoff threshold value C and the correction value D, the idle handoff is started. Through this, idle handoff to neighbor base stations delivering the same multicast content is facilitated and idle handoff to other base stations is made difficult.

The present invention provides high speed mobile terminal cell switchover control method. Said method includes when terminal moves away current service base station at higher set traveling speed and approaches predicted target cell, network side judges target cell signal whether satisfying pre-switching condition, if satisfying then starting up pre-switching and establishing channel in target cell. Said invention realizes high speed mobile terminal switching through predetermining mobile terminal travel direction, pre-applying channel resource in target cell and establishing channel.

A communication device can perform handover in accordance with a traffic type. In a non-real time communication, it is possible to prevent loss of packet data. In a real time communication, a handover can be rapidly performed without causing a delay. In this device, a handover control unit (105) judges whether data type information is data in a real time communication. If the data is in a real time communication, the handover control unit (105) outputs a switching request message for switching the path switch to the local station to an IPAG interface unit (104). An L3 packet buffer management unit (106) temporarily accumulates the data transmitted from the IPAG or data transferred from other network host.

The invention belongs to the field of mobile communication, in particular to a switching control method and a device of mobile terminal themes. The method comprises the following steps: collecting control information; determining a corresponding theme type corresponding to the control information according to the control information; and switching the theme of the mobile terminal to the corresponding theme type according to the control information. The switching control method and the device of mobile terminal themes judges user mood attributes carried by the control information through the control information, and judges the theme type corresponding to the control information of users according to the mood attributes. Under different theme types, users set different ringtones, different desktop themes, different background color and the like shown on the mobile terminal, corresponding to corresponding theme types by acquiring mood attributes of the users, thereby enabling a current theme to correspond to mood of the users and performing interaction with the users.

There is provided a USB controller with an intelligent transmission mode switching function and the operating method thereof. The USB controller includes a host controller, a device controller, a data line set, and a monitor unit, wherein the data line set includes a D+ data line and a D− data line which are manipulated by the monitor unit to selectively couple to the host controller and a device controller. By way of the switching manipulation provided by the monitor unit, the transmission mode of the USB controller can be periodically switched between the host mode and the device mode, so that the transmission mode of the USB controller can be detected and settled readily in order to conduct data communication with other devices.

An embodiment of the invention provides a dual-band adaptive concurrent handling method and a dual-band adaptive concurrent handling device. By means of adopting statistical information of a first frequency band service and a second frequency band service in the Nth adjusting period, service performance of every frequency band service in the adjusting period can be acquired; on the basis of the statistical information and QoS (quality of service) requirements needing to be met by the two frequency band services, a second proportionality coefficient of time slots, occupied by the two frequency band services, in the (N+1)th adjusting period can be determined, switching between a first access and a second access in the (N+1)th adjusting period can be controlled according to the determined second proportionality coefficient, and thereby quality requirements of the two frequency band services can be met as far as possible and service quality can be improved.

In a computer system according to the present invention, a switch-source OS controller unit includes: a OS switch request receiver unit configured to receive an OS switch request for requesting that the switch-destination OS in a suspend status becomes the OS in the active status; a switch event notifying unit configured to notify event information to the switch-destination OS or an application on the switch-destination OS, the event information being included in the received OS switch request, and requesting the switch-destination OS or the application on the switch-destination OS to perform a process; and a switch controller unit configured to call the OS switching function, by using the event information as an argument, so that the switch-destination OS becomes the OS in the active status.

Handoff is conventionally carried out in accordance with radio reception statuses such as C / I, so that handoff to a congested station can be made, resulting in a decrease in throughput. When an access terminal is handed off, requested-data-rate information based on a data rate control signal from each access terminal, average throughput of each access terminal before handoff, and a handoff request count are obtained from a base transceiver subsystem. A throughput after handoff of each access terminal is estimated from a ratio of the data rate information of each access terminal to the number of connected access terminals, and an estimated throughput ratio representing the degree of change from the average throughput of each access terminal before handoff to the estimated throughput is calculated. If the estimated throughput ratio is lower than or equal to a given value, the corresponding access terminal is not handed off. If the estimated throughput ratio is higher than the given value, the access terminal having the highest estimated throughput among access terminals requesting handoff is handed off.

The invention provides a controller based on a composite MEMS (Micro-electromechanical System) sensor and a gesture control keying method thereof and relates to the field of wireless sensor control technologies, in particular to the gesture control recognition field. The invention solves the problem that the conventional controller based on the composite MEMS sensor does not have gesture recognition function. The controller comprises a USB receiver and a controller body, wherein a switching control key or a gesture recognition activation key which is connected with a single chip and used for enabling the controller body to be in a mouse model and a gesture control mode is also arranged on the controller body. When the controller is in the gesture recognition model, the cursor positioning is stopped, corresponding gestures are recognized according to the displacement change of the controller body, and corresponding key codes are output according to the gestures without moving a cursor, which is similar to carry out shortcut key operation through a keyboard, therefore, the use is convenient.

In a user equipment (UE)(100), a handover from a macro cell base station (eNB)(200) to a CSG cell base station (HeNB)(300) is controlled based on a result of comparison between reception quality from the eNB (200) and reception quality from the HeNB (300) located in a macro cell. The UE (100) comprises: a reception quality measurement unit (104) for measuring the reception quality of the eNB (200) and the reception quality of the HeNB (300); an offsetting unit (106) for offsetting the reception quality of the HeNB (300) with an offset value that makes the reception quality of the HeNB (300) relatively higher than the reception quality of the eNB (200); and an offset value correcting unit (105) for correcting the offset value according to the reception quality of the eNB (200). A user equipment is thereby provided in which handover control can be performed with an appropriate offset value that takes into consideration interference in the uplink from the user equipment to the base station.