162results about How to "Good switching effect" patented technology

A system and method for supporting handovers between different radio access technologies is provided. A method for communications device operations includes sending a request to a controller of the communications device to change an operating mode of the communications device, and receiving a transmission responsive to the request. The method also includes in response to determining that the controller has granted the request to change the operating mode and that the communications device is operating in a border cell, changing the operating mode of the communications device, tuning at least one receiver of the communications device to an alternate radio access technology (RAT), and initiating a handover with the alternate RAT.

A method and apparatus are provided where a neighbor cell interference signal is canceled upon receiving a signal transmitted from a serving base station (BS) in a receiver of an Orthogonal Frequency Division Multiple Access (OFDMA) system. The interference signals are detected from signals received from neighbor BSs and a serving BS. The strength of the detected interference signals is measures, and a determination is made whether the measured strength is higher than a threshold value. A list of neighbor BSs satisfying the determination result is reordered, and interference signals in order of the reordered neighbor BSs are selected and detected. An interference / noise variance for the detected interference signal is calculated and normalized. The normalized interference signal is decoded and regenerated, and the regenerated interference signal is subtracted from the received signal.

According to an embodiment, an apparatus such as a femto base station may include a transmitter to send via a local network an information to a mobile network for informing on an active state of apparatus. The apparatus may be configured to send the information when being switched on, or on a periodical or repeated basis in a switched-on state of the apparatus. A macro base station may add the femto base station to a network configuration list. Respective methods are also provided.

A cellular communication system includes first and second base stations and a user equipment. A Radio Network Controller controls a handover of the user equipment between the base stations by either forwarding data of the communication to both the first and second base stations or to only one of the first and second base stations dependent on a Quality of Service (QoS) characteristic of the communication of the user equipment. The QoS characteristic can specifically be an indication of a delay constraint for the communication service such as an indication of whether the service is a real-time service or a non-real time service.

A method is provided for controlling uplink data traffic in a wireless communication system. If Internet Protocol (IP) packets are received from a higher layer, one or more medium access control service data units (MAC SDUs) are generated in units of sub-blocks. A modified packing sub-header (PSH) used for distinguishing between the MAC SDUs is added to the generated MAC SDUs. MAC SDUs having the same connection identifier (CID) among the modified PSH-added MAC SDUs are grouped. A modified MAC header (MH) used for distinguishing between the MAC SDU groups is added to generate one or more tunnel messages, and the generated tunnel messages are grouped. A tunnel frame header used for distinguishing between the tunnel messages to generate a tunnel frame is added thereto. The generated tunnel frame is transmitted to a base station.

A base station (101) supports a remote station (117) making uplink transmissions using an uplink scrambling code in a first cell. A controller (119) determines a set of uplink scrambling codes from an identity of the remote station (117) and selects the used code therefrom. An access point (111) determines the group of remote stations registered at the access point. A measurement code processor (205) determines the uplink scrambling codes potentially used by the remote stations. A measurement unit (207, 209) then monitors for received signals using these codes and a handover detection processor (211) generates a potential handover detection for the remote station (117) in response to a detection of a received signal using the uplink scrambling code of the remote station (117).

A mobile network domain (101) comprises a mobility anchor node (105) providing a non-mobile network attachment and at least a first and second access router (107, 109) supporting access by mobile nodes (127). The nodes of the mobile network domain (101) support label encapsulated tunneling. Label switching paths (121, 129) are established between the mobility anchor node (105) and the access routers (107, 109) as well as between the access routers (107, 109) themselves. When a handover of a mobile node (127) from the first access router (107) to the second access router (109) is detected, the first access router (107) forwards data packets for the mobile node (127) received via a first label switching path (121) to the second access router (109) via a direct label switching path (129) between the access routers (107, 109). The forwarded data packets are label encapsulated tunneling data packets. The invention may for example combine NetLMM (Network based Local Mobility Management) and MPLS (Multi-Protocol Label Switching) techniques to provide better performance and handover.

According to the present invention, a method of performing coordinated multi-point transmission and reception in an overlaid cellular system in which a first base station and a second base station overlay each other, the method comprising performing a handover using a coordinated multi-point transmission and reception scheme based on CRS-RS (Channel State Indicator-Reference Signal) information of user equipment by the first and second base stations.

A method for handover in a wireless communications network includes the step of communicating information between a target network node and a source network node to enable the source network node to identify and to distinguish types of failures prior to, during or after handover. The information may relate to: “Handover command not received” due to RLF prior to handover or Handover command failure experienced in the source cell; or “Handover failure” where “Handover command received” is followed by Access failure in the target cell. The method is applicable, for example, to networks in accordance with LTE.

The invention discloses a wireless network, which comprises wireless communication systems of different standards. In addition, the wireless network comprises a different network coordinating device which is used for the coordination and switching between wireless communication systems of different standards or the coordination and process of a plurality of attachments to user equipment. The invention further discloses a corresponding user equipment switching and attachment method, which can provide convenient intersystem intercommunication, attachment, and optimized switch performance on the premise of keeping the access system standards developing independently and reducing the cross linkage.

The invention discloses a neighboring-area message routing method and a message routing method. The neighboring-area message routing method comprises the following steps: a base station transmits messages containing neighboring-area messages to a terminal, wherein the neighboring-area messages carries parameter messages of each base station in a reference base station set, and each base station in the reference base station set is a base station which allows the access of the terminal. By virtue of the technical proposal, the relevant messages of each base station capable of providing service to the terminal are transmitted to the terminal through the base station, thereby solving the problems of large expense on the system control and long scanning time of the terminal. The invention can improve the switching performance of the system and reduce the energy loss of the terminal.

The invention discloses a method for regulating a discontinuous reception cycle. The method comprises the following steps of: determining a service activity by a node B evolved base station (eNB) through a data packet arrival rate of service data; reporting mobile state information to the eNB by user equipment (UE); and configuring a discontinuous reception (DRX) cycle by the eNB depending on the service activity and the mobile state information. Through the application of the embodiment disclosed by the invention, the DRX cycle is precisely configured, waste of UE power is reduced and switching performance is improved.

The embodiment of the invention provides an encoding mode switching method which comprises the steps that when the i frame and the i+1 frame are in the MDCT encoding mode and the ACELP encoding mode, the MDCT encoding mode is carried out on the i frame through a pre-defined window pattern to obtain MDCT encoding information; encoding information of the i frame or the i frame and frames before the i frame are decoded to obtain decoding signals; according to the decoding signals, partial input signals of the i frame and partial input signals of the i+1 frame, history states of a filter in the ACELP encoding mode are set up and updated, and then subsequent input signals which are one frame long are subjected to the ACELP encoding process. The embodiment of the invention provides an encoding mode switching device from MDCT to ACELP, and a decoding mode switching method and device from MDCT to ACELP, and further provides an encoding mode switching method from ACELP to MDCT and a decoding mode switching method and device from ACELP to MDCT.

A method, device and system for implementing optimized inter-RAT handover are disclosed. When a user equipment or a source network prepares for a handover to a target network, a corresponding target network ID is obtained from a configured mapping between cell IDs and target IDs according to a received cell ID, target network bearers are established following identification of an access node of the target network, and the user equipment is connected to the target network after handover preparation is complete. With the present invention, when a user equipment is handed-over from a source network to a target network, service continuity can be maintained with an enhanced quality of user experience.

The present invention relates to a handover management method that can reduce a service interruption time due to handover of a mobile station in a wideband wireless access system. A handover management method according to an exemplary embodiment of the present invention includes receiving a handover request message from a serving base station, transmitting a handover response message that includes a basic channel identifier to be allocated to a mobile station, receiving a ranging request message from the mobile station using the basic channel identifier, and using the basic channel identifier to start uplink / downlink communication with the mobile station.

The invention relates to an improved electrophoretic display and a manufacturing method, two transparent electrophoretic layers with special electrical performance are added to the display elements to form the electrophoretic display, which can achieve rapid display state switch and better display stability and long display maintain capability, particularly after multi-layers of electrophoretic display elements are superposed, two additional transparent electrophoretic layers with special electrical performance can not only achieve rapid display state switch and better display stability and long display maintain capability, but also has the performances of improving contrast, switching performance, the reflectivity and structure integrality in the minimum optical density state. At the same time the invention also provides the electrophoretic display manufacturing method.

The invention discloses a report set measurement and trigger measurement report based method. The method comprises the following step of: after user equipment (UE) receives a measurement control parameter from a network element (NE) of a network side, establishing a report set according to the measurement control parameter and measuring a cell in a monitoring set. The invention also discloses a report set measurement and trigger measurement report based system which comprises a report set establishing unit and a measuring unit, wherein the report set establishing unit is used for establishing the report set according to the measurement control parameter, and the measuring unit is used for measuring the cell in the monitoring set according to the measurement control parameter. The invention also discloses UE applying the method, which comprises a report set establishing unit and a measuring unit, wherein the report establishing unit is used for establishing the report set according to the measurement control parameter, and the measuring unit is used for measuring the cell in the monitoring set according to the measurement control parameter. By adopting the method, the system and the UE, UE measurement and UE trigger measurement reports can be accurately reported in time.

The invention provides a matrix switch relay fault detection device and method. Through adding a circuit board, signal output channels of matrix switches are respectively connected in series with a resistor having identical resistance, parallel resistor resistance measurement on the multiple switch channels is carried out, and whether a switch relay is in fault is determined according to change of measurement values. The method is advantaged in that sequentially closing and opening all the matrix switch relays is not needed, a step-by-step average grouping method is utilized to carry out resistance measurement of the multiple switches having relay faults, a detection scope is reduced step by step, the fault detection time can be shortened, detection efficiency is improved, and the method has the obvious effect on large-scale matrix switches.

The invention discloses a multi-function wireless access equipment and a wireless access method thereof, wherein the equipment comprises a voice gateway function unit, a data gateway and transmission interface unit, a power supply and equipment control unit and a multi-function wireless access unit. The voice gateway function unit is connected with the multi-function wireless access unit and the power supply and equipment control unit, and is connected with a remote PSTN switch by a transmission medium; the multi-function wireless access unit is connected with the voice gateway function unit, the power supply and equipment control unit and the data gateway and transmission interface unit; and the data gateway and transmission interface unit is connected with the multi-function wireless access unit and the power supply and equipment control unit and is connected with a broadband remote access server (BRAS), a macro network core-network and other wireless access networks through a transmission network. The multi-function wireless access equipment has the multi-function wireless access unit which can provide macro network wireless access network function, micro network function, wireless telephone function and wireless gateway function.

The invention belongs to the field of automobile dual fuel guide rail switching devices, and discloses an automobile duel fuel guide rail multi-way valve. The multi-way valve includes a casing, two end surface cylinder plugs, and a valve core piston, wherein a through hole is formed in the casing, the movable valve core piston is arranged in the through hole, the two end surface cylinder plugs are arranged at the two ends of the through hole, an internal passage is arranged in each end surface cylinder plug, and an oil inlet hole is formed in the surface of each end surface cylinder plug and communicated with the corresponding internal passage; guide rail mounting holes are respectively formed in the two ends of the casing, and are respectively communicated with the oil inlet holes in the two end surface cylinder plugs; an ejector mounting hole is formed in the casing and communicated with the center of the through hole. The device has the advantages that two automobile fuel guide rails can be reliably switched and share one ejector, the pipeline airtightness is good, drifting of the valve core piston is prevented, and the operation is stable; mixing of two fuels is avoided during switching, so that one fuel can be effectively prevented from entering a fuel tank for the other fuel during switching. The automobile duel fuel guide rail multi-way valve can be widely mounted in various types of automobiles.

A method is provided for controlling uplink data traffic in a wireless communication system. If Internet Protocol (IP) packets are received from a higher layer, one or more medium access control service data units (MAC SDUs) are generated in units of sub-blocks. A modified packing sub-header (PSH) used for distinguishing between the MAC SDUs is added to the generated MAC SDUs. MAC SDUs having the same connection identifier (CID) among the modified PSH-added MAC SDUs are grouped. A modified MAC header (MH) used for distinguishing between the MAC SDU groups is added to generate one or more tunnel messages, and the generated tunnel messages are grouped. A tunnel frame header used for distinguishing between the tunnel messages to generate a tunnel frame is added thereto. The generated tunnel frame is transmitted to a base station.

The invention provides a power supply fast switch method and system. The power supply fast switch method comprises the following steps: step A, a switch starting signal transmitted from a switch starting judgment module is received; step B, whether fast switch conditions are met or not is judged, if yes, switch operation is performed, and if not, a step C is executed. The power supply fast switch method and system have the advantages that through mutual cooperation of all segments of a fast switch device and cooperation between a joint switch function and a fast switch function, the fast switch device can be adapted to various complex bus load conditions, and a better switch effect can be achieved; besides, when fast switch switching-on is judged, a current phase difference is replaced by a switching-on phase difference for judgment, as a result, the switching-on phase difference is accurately controlled to be within a permissible value range, the switch operation is faster and safer, and a device is protected against damage.

The invention discloses a CDMA soft handover method which can be used in present code division multiple access systems. The invention preserves current soft handover mechanisms triggered by a pilot signal strength variation measured by a mobile station. At the same time it introduces a communication quality indication parameter—continuous error frame indication measured by mobile station. Both function together to launch and to activate system soft handover. Without changing present soft handover processes, soft handover performance is improved, possibility of lost conversation is decreased and communication quality is raised.

A multiple LMA selection method in the mobile node switching process in the PWIPv6 domain is provided, wherein an N-MAG transmits the specific IBU message to the all LMAs in one PWIPv6 domain via respectively spreading the PBU message and the PBA message between the MAG and the LMA when the MN is switched from the p-MAG to the n-MAG, only the LMA preserving the MN previously bound information can update the MN bound information according to the content of the IBU message, and transmit the corresponding IBA message, other LMA can not echo, the n-MAG finally set up the binding relation for the identical LMA selected by the MN so as to ensure that the MN is all bound with the same LMA before and after the MN switching, thus solving the problem of the re-authentication of the AAA server, keeping the AAA information availability and service continuity, and optimizing the MN switching performance. The method can not spread the other protocol, has little change for the present message format and the process flow of the PMIPv6, and can not depend on the other external structure added method, with simple, convenient and easy operation steps.

A mobile station device acquires handover information when receiving a handover command message and continues a reception process in a source cell until a handover start time when it is judged that the command is for a synchronous handover. When the handover start time comes, a cell switching control is performed according to the handover information and a downward synchronization establishing process is started to the target cell. When the downward synchronization is established before an end of a handover protection time and it is judged that the synchronization establishment is completed within an expected downward synchronization establishment time through the judgment, it is judged that an upward synchronization establishment is not necessary to the target cell and the synchronous handover process in which a random access is not needed is performed. On the other hand, when it is judged that the synchronization establishment is not completed, it is judged that the upward synchronization establishment is necessary to the target cell and the handover process in which a random access transmission is needed is performed.

A method for improving heterogeneous network switching performance includes that a UE (user equipment) measures RSRP (reference signal received power) and RSQR (reference signal received quality) in each symbol in a single subframe; the averaged RSRP subjected to linear additivity and the averaged RSQR subjected to linear additivity are filtered for the first time to acquire a first measured value; the first measured value is filtered for the second time to acquire a second measured value by combining a filter factor k; the UE initiatively reports auxiliary information including corresponding information of the second measured value, and a network side performs switching judgment according to the auxiliary information. By the method, the heterogeneous network switching performance can be improved, while compromise of switching failure and short stay rate can be achieved.