Patents Assigned to Via Telecom, Inc.
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Publication number: 20100210246Abstract: A first communication device wirelessly coupled to a second communication device. The first communication device includes a first receiver, a message processor, and a first transmitter. The first receiver is configured to receive first signals corresponding to a first number of communication devices, where the second communication device is one of the communication devices, and is also configured to measure first strengths of the first signals. The message processor is configured to determine that a second number of the communication devices can be processed by the first communication device according to the first strengths measured. The first transmitter is configured to transmit one or more first messages to the second communication device indicating the second number.Type: ApplicationFiled: February 12, 2010Publication date: August 19, 2010Applicant: VIA TELECOM, INC.Inventors: Hong-Kui Yang, Shu Wang
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Publication number: 20100202501Abstract: A communication device wirelessly coupled to another communication device. The communication device includes a first transmitter and a first receiver. The first transmitter is configured to transmit first power control bit information to the base station over a reverse link. The first transmitter has a timeline manager, configured to transmit the first power control bit information at a first rate according to a first pattern within a frame. The first receiver is configured to receive second power control bit information from the another communication device over a forward link. The first receiver has an adaptive controller, configured to determine the first rate and the first pattern. The first rate and the first pattern are selected from a plurality of rates and patterns available for transmission of the first power control bit information and the second power control bit information.Type: ApplicationFiled: January 21, 2010Publication date: August 12, 2010Applicant: VIA TELECOM, INC.Inventors: Hong-Kui Yang, Shu Wang, Kraig Lamar Anderson, Jian Gu, Tingting Miao, Zhigang Tian
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Publication number: 20100178897Abstract: A mobile station is provided. The mobile station has a plurality of removable user identification modules, key generation logic, and hash logic. The plurality of removable user identification modules are each configured to store unique corresponding information associated with a corresponding plurality of cellular subscriptions. The key generation logic is configured generate a hash key. The hash logic is coupled to the key generation logic, and is configured to employ the hash key to determine parameters and attributes for continuing communication with a base station, where each of the parameters and attributes are determined to maximize use of common hardware and software within the mobile station to concurrently provide for communications in support of the corresponding plurality of cellular subscriptions.Type: ApplicationFiled: January 12, 2010Publication date: July 15, 2010Applicant: VIA TELECOM, INC.Inventors: Anthony Lee, Shu Wang
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Publication number: 20100172451Abstract: Provided is automatic gain control (AGC) in which a feedback filter has a parameter that is changed based on information regarding data-packet boundaries. In one representative embodiment, the bandwidth of the filter temporarily is increased, or the time constant of the AGC filter temporarily is decreased, within a vicinity of each actual or potential packet boundary.Type: ApplicationFiled: March 5, 2009Publication date: July 8, 2010Applicant: VIA TELECOM, INC.Inventors: Insung Kang, Tarun K. Tandon
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Publication number: 20100165970Abstract: A method and apparatus is provided for reducing network synchronization time in a dual-mode access terminal. The dual-mode access terminal supports a first and a second network. The method includes determining if CDMA system time is available within the dual-mode access terminal. In response to determining that CDMA system time is available, the method includes forgoing acquiring the CDMA system time through a pilot acquisition procedure, reading the CDMA system time from a memory, and programming the CDMA system time into a system time unit. In response to determining that CDMA system time is not available, the method includes acquiring the CDMA system time through the pilot acquisition procedure and programming the CDMA system time into the system time unit.Type: ApplicationFiled: April 8, 2009Publication date: July 1, 2010Applicant: VIA TELECOM, INC.Inventor: Anthony S. Lee
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Publication number: 20100135258Abstract: A base station apparatus for increasing the throughput of a packetized cellular data network is provided. The base station apparatus includes an orthogonal frequency division multiplexed (OFDM) encoder and a time division multiplexer. The OFDM encoder is configured to encode a plurality of data streams into a corresponding plurality of OFDM tones, where one of the corresponding plurality of OFDM tones includes an OFDM preamble tone that indicates a mapping of remaining OFDM tones within the plurality of OFDM tones to one or more of a plurality of mobile stations. The time division multiplexer is operatively coupled to the OFDM encoder, and is configured to time multiplex a plurality of streams over a forward link channel for receipt by the plurality of mobile stations, where the corresponding plurality of OFDM tones are encoded as one of the plurality of streams.Type: ApplicationFiled: November 27, 2009Publication date: June 3, 2010Applicant: VIA TELECOM, INC.Inventors: Hong-Kui Yang, Shu Wang
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Publication number: 20100136979Abstract: An apparatus for performing a soft handoff including a power estimator, cell selector, and feedback channel generator. The power estimator receives a plurality of pilot signals that each correspond to an associated base station within an active set registry, and estimates a power level for each of the plurality of pilot signals. The cell selector is coupled to the power estimator, and is configured to select one or more base stations within the active set registry for selective blanking of a corresponding one or more of the plurality of pilot signals during a soft handoff operation. The feedback channel generator is coupled to the cell selector, and is configured to generate a cell selection feedback signal indicating the one or more base stations, where the cell selection feedback signal is subsequently transmitted to the one or more base stations, and where the cell selection feedback signal directs the one or more base stations to perform the selective blanking.Type: ApplicationFiled: November 23, 2009Publication date: June 3, 2010Applicant: VIA TELECOM, INC.Inventors: Hong-Kui Yang, Jian Gu, Tingting Miao, Shu Wang, Zhigang Tian
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Publication number: 20100081393Abstract: A user equipment for handling an attach procedure with a service network is provided. The user equipment comprises a wireless module transmitting an attach request message to the service network and receiving an attach accept message replied to the attach request message from the service network, and a controller determining whether to accept the attach accept message, sending an attach complete message, via the wireless module, to the service network in response to the attach accept message being accepted, and resending the attach request message, via the wireless module, to the service network in response to the attach accept message not being accepted.Type: ApplicationFiled: May 14, 2009Publication date: April 1, 2010Applicant: VIA TELECOM, INC.Inventor: Jen-Sheng Huang
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Publication number: 20100081435Abstract: A service network for handling abnormal interrupts, including tracking area updates, lower layer failures, and guard timer expiries, during an attach procedure with a user equipment is provided. The service network includes a radio access network and a control node. When the radio access network detecting an abnormal interrupt, the control node aborts the attach procedure by sending a detach request message, via the radio access network, to the user equipment.Type: ApplicationFiled: April 3, 2009Publication date: April 1, 2010Applicant: VIA TELECOM, INC.Inventor: Jen-Sheng Huang
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Publication number: 20100074170Abstract: A user equipment for alleviating barred access while reselecting from a first cell to a second cell in a mobile communication system is provided. A wireless module detects receives system information broadcasted in the first cell. A storage unit stores the system information. A controller reselects from the first cell to the second cell, determines whether a first barred access timer is running, and stops the first barred access timer and informs the upper layer of an RRC protocol that the access of the first service is allowed in response of that the first barred access timer is running.Type: ApplicationFiled: March 24, 2009Publication date: March 25, 2010Applicant: VIA TELECOM, INC.Inventor: Teming Chen
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Publication number: 20100077135Abstract: A wear leveling method for a non-volatile memory is provided. The non-volatile memory includes a plurality of data blocks, each corresponding to a time value. The data blocks are arranged according to a sequence of the time values corresponding thereto. The arranged blocks form a key table. An erase operation is determined whether to be executed for the data blocks. When the erase operation is executed for the data blocks, the corresponding data block is erased according to a sequence of the time values of the data blocks in the key table.Type: ApplicationFiled: July 9, 2009Publication date: March 25, 2010Applicant: VIA TELECOM, INC.Inventors: Rong Li, Yuefeng Jin, Li Wang
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Publication number: 20100035599Abstract: An apparatus and method for a radio resource control (RRC) protocol to re-establish connection in a mobile communication system environment are disclosed. A user equipment (UE), for performing connection re-establishment in a connected state with connection to a mobile communication system is provided. When a network problem occurs, the UE shall proceed with the RRC protocol connection re-establishment procedure if the security has been activated. However, if the security has not been activated and the Radio Link Control (RLC) protocol indicates the maximum number of re-transmission has been reached, the UE shall reset lower layers of the RRC protocol, release unnecessary radio resources, and indicate the release of the RRC protocol connection to upper layers of the RRC protocol. Then the UE enters the idle state and waits for the next trigger event.Type: ApplicationFiled: November 12, 2008Publication date: February 11, 2010Applicant: VIA TELECOM, INC.Inventor: Teming Chen
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Publication number: 20090298515Abstract: A method for acquiring time synchronization and location information with a Femtocell includes an access point base station conveying an activation request to a service provider through a wired connection, where the service provider provides wireless communication in a macro area, and where the access point base station provides wireless communication in a local area. The method also includes the access point base station performing a first plurality of procedures to acquire a time synchronization and a second plurality of procedures to acquire a location of the access point base station.Type: ApplicationFiled: May 11, 2009Publication date: December 3, 2009Applicants: IPComm, VIA Telecom, Inc.Inventors: STANISLAW CZAJA, PAUL CHUN-HSIUNG WEI
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Publication number: 20090296836Abstract: A channel estimation device and method for an orthogonal frequency division multiplexing (OFDM) system for receiving OFDM symbols to generate channel estimation information is provided. The channel estimation method includes: obtaining a portion of pilot signals from a plurality of pilot signals as a first pilot set according to corresponding positions of the pilot signals in the OFDM symbols; estimating a first estimation factor by calculating the pilot signals in the first pilot set in a first direction; estimating a second estimation factor by calculating the pilot signals in the first pilot set in a second direction; obtaining a pilot signal estimation result according to the first estimation factor and the second estimation factor; and obtaining the channel estimation information according to the pilot signal estimation result.Type: ApplicationFiled: March 9, 2009Publication date: December 3, 2009Applicant: VIA TELECOM, INC.Inventor: Pengcheng Su
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Publication number: 20090298475Abstract: A system and method for creating a localized silence area. A mobile device may be registered with an access point base station. Any direct communication links from the mobile device to any other base stations may be removed. An indication may be given to the mobile device that the mobile device is in a localized silence zone. The indication may include a request that the mobile device operate in a silent mode, information about making outgoing calls, information about receiving incoming calls, or a combination of these. Procedures for incoming voice calls to the mobile device may be different for different priority levels.Type: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Applicants: IPComm, VIA Telecom, Inc.Inventors: Stanislaw Czaja, Mark E. Davis
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Patent number: 7596193Abstract: Provided is automatic gain control (AGC) in which a feedback filter has a parameter that is changed based on information regarding data-packet boundaries. In one representative embodiment, the bandwidth of the filter temporarily is increased, or the time constant of the AGC filter temporarily is decreased, within a vicinity of each actual or potential packet boundary.Type: GrantFiled: March 6, 2006Date of Patent: September 29, 2009Assignee: VIA Telecom, Inc.Inventors: Insung Kang, Tarun K. Tandon
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Patent number: 7567515Abstract: Provided is a multi-layered transmission technique in which a signal indicating that a transmitted data packet has been correctly received by the receiver is provided from one communication layer to another. Based on that signal, the second layer releases the corresponding data from its retransmission buffer. As result, storage requirements for data waiting to be retransmitted, if necessary, often can be significantly reduced.Type: GrantFiled: November 4, 2005Date of Patent: July 28, 2009Assignee: VIA Telecom, Inc.Inventor: Qiang Shen
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Publication number: 20090172495Abstract: Methods and apparatuses for parallel decoding and data processing of Turbo codes are provided. The method includes: a codeword dividing step for dividing a whole codeword into Q sub-blocks to form a plurality of boundaries between adjacent sub-blocks of the Q sub-blocks so as to decode the Q sub-blocks, wherein the decoding process comprises P times of decoding iterations, and wherein Q is a positive integer and Q>1 and P is a positive integer and P>1; and a boundary moving step for moving at least one position of the boundaries formed in a pth decoding iteration by an offset ? before performing a (p+n)th decoding iteration, wherein p is a positive integer and 1?p<P, n is a positive integer and 1?n<P?p, and the offset ? is set as a fixed step size.Type: ApplicationFiled: December 26, 2008Publication date: July 2, 2009Applicant: VIA TELECOM, INC.Inventors: Le Wang, Hongwen Yang, Hong Kui Yang
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Publication number: 20090092096Abstract: Automatic provisioning of an access point base station or femtocell. The method may include the femtocell transmitting first information (e.g., location information, signal measurement information, capability information, etc.) to a service provider (e.g., over an IP network). The femtocell may receive second information from the service provider, where the second information includes one or more operational parameters. The operational parameters may include hand-off parameters, admission policy information, PN or scrambling codes, power parameters, and/or other parameters. The femtocell may operate according to the received parameters to provide access for a plurality of access terminals in a local area.Type: ApplicationFiled: May 20, 2008Publication date: April 9, 2009Applicants: VIA TELECOM INC., IPCommInventors: Stanislaw Czaja, Mark E. Davis, Anthony Lee
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Publication number: 20090092122Abstract: Time synchronization of an access point base station. The method may include receiving an assignment message from a service provider comprising a plurality of parameters. The plurality of parameters may include an access point base station frequency assignment, a network identifier, an access point base station identifier, a neighbor list, a PN offset, and/or a scrambling code. The access point base station may then synchronize with the macro base station. Synchronizing may include searching for a strongest macro base station in the neighbor list, synchronizing a long code of the access point base station to the macro base station, estimating a propagation delay between the macro base station and the access point base station, and initializing a state of the access point base station PN code using the propagation delay to provide system time synchronization.Type: ApplicationFiled: June 23, 2008Publication date: April 9, 2009Applicants: VIA TELECOM INC., IPCOMMInventors: Stanislaw Czaja, Mark E. Davis, Anthony Lee