792 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.

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.

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 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.

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.

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.

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.

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 handover control, a data collection unit collects measurement data that indicates communication quality of uplink and downlink paths between a mobile station and base stations. A candidate evaluation unit evaluates which base station is optimal for uplink, as well as which base station is optimal for downlink, based on the measurement data. A station selection unit determines which link has priority, either uplink or downlink, according to the class of data services that the mobile station uses in radio communication, and selects as a target base station for handover the base station that has been determined as being optimal for the link having priority.

The invention relates to the technical field of communication, and provides a switch control method for wireless networks. The switch control method includes the first step of setting cell type for each cell, and binding the cell types with cell identifications, the second step of detecting the state of terminals, the third step of selecting the target cells through the wireless networks according to the cell types and the state of the terminals, and the fourth step of setting measuring offset parameters according to the cell types of the target cells and the state of the terminals to control the terminals to be switched to the target cells. The switch control method can be used for carrying out switch judgment by combining with the state of the terminals, the types of the target cells and the like, provides a relatively good communication quality guarantee for the terminals with different mobile states, reduces switch call drop rate, and improves perceptibility of users.