Patents Assigned to Via Telecom, Inc.
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Patent number: 8160186Abstract: 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 5, 2009Date of Patent: April 17, 2012Assignee: VIA Telecom, Inc.Inventors: Insung Kang, Tarun K. Tandon
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Publication number: 20120082106Abstract: A system for allocating PRACH (Physical Random Access Channel) resources is provided in the invention. The system comprises a plurality of wireless terminals and a base station. The base station is configured to allow the plurality of wireless terminals to share an access slot comprising a plurality of M2M (Machine to Machine) preambles and a plurality of H2H (Human to Human) preambles, and configured to separate the plurality of M2M preambles from the plurality of H2H preambles.Type: ApplicationFiled: September 30, 2011Publication date: April 5, 2012Applicant: VIA TELECOM, INC.Inventors: Guotong Wang, Anthony Lee
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Publication number: 20120069823Abstract: An apparatus supporting MTC in an LTE environment including an LTE modem and a CDMA modem. The LTE modem accesses a first wireless network and executes first data transactions, where the first wireless network comports with LTE standards. The CDMA modem is operationally coupled to the LTE modem, and accesses a second wireless network and executes second data transactions, where the second wireless network comports with one or more CDMA-based standards. The CDMA modem includes an inter-radio access technology (IRAT) API element and an inter-process communication (IPC) module. The IRAT API element is configured to send/receive IRAT messages via function calls to/from the LTE modem, where the IRAT messages remain the same regardless of interface requirements for the LTE modem. The IPC module is coupled to the IRAT API element, and is configured to generalize the function calls to enable the CDMA modem to interoperate with the LTE modem.Type: ApplicationFiled: August 3, 2011Publication date: March 22, 2012Applicant: VIA TELECOM, INC.Inventors: Su-Lin Low, Wei-Dong Zhang, Hausting Hong, Yanzhi Zhang, Jianzhi Wang
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Patent number: 8135404Abstract: 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: GrantFiled: May 14, 2009Date of Patent: March 13, 2012Assignee: Via Telecom, Inc.Inventor: Jen-Sheng Huang
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Patent number: 8121093Abstract: 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: GrantFiled: March 24, 2009Date of Patent: February 21, 2012Assignee: Via Telecom, Inc.Inventor: Teming Chen
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Publication number: 20120039253Abstract: A data processing method for a wireless communication system with a plurality of terminals, an intermediate device and a service network, the method comprising: sending a plurality of machine type communication (MTC) data flows from the plurality of terminals to the intermediate device; performing a data multiplexing operation by the intermediate device on the plurality of machine type communication data flows to generate a multiplexed data flow; and the service network receiving the multiplexed data flow.Type: ApplicationFiled: August 12, 2011Publication date: February 16, 2012Applicant: VIA TELECOM, INC.Inventors: Guotong Wang, Anthony Lee
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Patent number: 8103267Abstract: A communication device that includes a femtocell base station and a mobile station transmitter/receiver. The femtocell base station may provide bidirectional internet protocol (IP) communication for one or mobile devices to a cellular network. The femtocell base station may be operable to communicate with the cellular network using a wide area network. The mobile station transmitter/receiver may be coupled to the femtocell base station (in a same housing). The mobile station transmitter/receiver may be operable to perform radio frequency (RF) wireless communication with the cellular network, e.g., to detect and/or report environmental parameters, performing testing (e.g., loopback testing), and/or provide communication for the one or more mobile devices (e.g., when the wide area network is down), among others.Type: GrantFiled: September 26, 2007Date of Patent: January 24, 2012Assignee: VIA Telecom, Inc.Inventors: Anthony Lee, Ning Nicholas Chen
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Publication number: 20110310769Abstract: A Machine Type Communication (MTC) method for an MTC device to configure a plurality of MTC logical channels associated with an MTC application is provided The method comprises the steps of: configuring, in a Medium Access Control (MAC) layer, the MTC logical channels independently from a Common Control Channel (CCCH), a Dedicated Control Channel (DCCH), and a Dedicated Traffic Channel (DTCH), wherein the MTC logical channels include a Machine Type Communication Traffic Channel (MTCTCH) and a Machine Type Communication Control Channel (MTCCCH); carrying uplink and downlink traffic data dedicated for the MTC application executed by the MTC device in the MTCTCH; and carrying uplink and downlink control data dedicated for the MTC application executed by the MTC device in the MTCCCH.Type: ApplicationFiled: June 17, 2011Publication date: December 22, 2011Applicant: VIA Telecom, Inc.Inventors: Anthony LEE, Guotong Wang
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Publication number: 20110300889Abstract: A method for reducing signaling overhead in user equipment (UE) connected to a base station is provided. The method includes: when the UE sends Radio Resource Control (RRC) layer messages to the base station, the UE compresses RRC layer messages and sends the compressed RRC layer messages to the base station; and when the UE receives the compressed RRC layer messages from the base station, the UE decompresses the compressed RRC layer messages received from the base station.Type: ApplicationFiled: June 3, 2011Publication date: December 8, 2011Applicant: VIA TELECOM, INC.Inventors: Anthony Lee, Guotong Wang
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Publication number: 20110300858Abstract: A mobile communications device with a wireless module and a controller module for performing a buffer status reporting procedure is provided. The wireless module performs wireless transmissions and receptions to and from a cellular station of a service network. The controller module receives machine type communication (MTC) data, determines whether to trigger a buffer status report (BSR) according to a comparison result of the data size of the MTC data and a threshold value when the MTC data arrives at an empty transmission buffer, and if so, transmits the BSR to the cellular station via the wireless module.Type: ApplicationFiled: June 3, 2011Publication date: December 8, 2011Applicant: VIA TELECOM, INC.Inventors: Anthony Lee, Guotong Wang
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Publication number: 20110299492Abstract: A mobile communications device with a wireless module and a controller module for performing an enhanced access procedure is provided. The wireless module performs wireless transmissions and receptions to and from a cellular station of a service network. The controller module transmits a random access preamble to the cellular station via the wireless module, receives a random access response message corresponding to the random access preamble from the cellular station via the wireless module, and transmits a scheduled transmission message including the MTC (machine type communication) data from the cellular station via the wireless module, in response to the random access response message. Then, the controller module completes the enhanced access procedure in response to receiving a contention resolution message from the cellular station via the wireless module.Type: ApplicationFiled: June 3, 2011Publication date: December 8, 2011Applicant: VIA TELECOM, INC.Inventors: Anthony Lee, Guotong Wang
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Publication number: 20110261976Abstract: A signal amplifying circuit is provided. The signal amplifying circuit includes a signal amplifier and a control circuit. The control circuit includes a compare unit and a register unit. The compare unit compares an input signal of the signal amplifier with a reference signal to generate a compare signal. The register unit receives and registers a control signal to be transmitted to the signal amplifier, and provides a registered signal to the signal amplifier according to the registered control signal when the compare signal is changed.Type: ApplicationFiled: July 16, 2010Publication date: October 27, 2011Applicant: VIA TELECOM, INC.Inventor: Wu-Hung Lu
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Publication number: 20110264976Abstract: A wireless communication system including a receiver and a transmitter. The receiver receives a frame of data, and sends an acknowledgement. The acknowledgement includes a positive acknowledgement (ACK) if the data is successfully decoded or a negative acknowledgement (NAK) if the data is unsuccessfully decoded. The acknowledgement is sent according to timing of an acknowledge mask. The transmitter is wirelessly coupled to the receiver, and receives the acknowledgement according to the acknowledge mask, and sends a response to the receiver according to the acknowledgement. The response includes, if an ACK is received before transmission completes of the frame, the transmitter terminates transmission of the frame; if a NAK is received before transmission completes of the frame, the transmitter continues to send the frame; and if an ACK is not received before a predefined frame early scheduling point, the transmitter retransmits the frame after transmission completes of the frame.Type: ApplicationFiled: April 18, 2011Publication date: October 27, 2011Applicant: VIA TELECOM, INC.Inventors: Hong-Kui Yang, Shu Wang
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Publication number: 20110248785Abstract: A clock generator and generating method, and a mobile communication device using the clock generator. A clock generator comprises a first accumulator, an oscillating signal generating circuit and a frequency adjustment circuit. The oscillating signal generating circuit generates a first oscillating signal and adjusts a frequency of the first oscillating signal according to a first overflow output signal of the first accumulator. The frequency adjustment circuit generates a frequency control value according to the first oscillating signal and a reference oscillating signal. The first accumulator accumulates the frequency control value according to the first oscillating signal to generate the first overflow output signal.Type: ApplicationFiled: October 18, 2010Publication date: October 13, 2011Applicant: VIA TELECOM, INC.Inventor: Yu-Hong Lin
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Publication number: 20110242998Abstract: A mobile communication device for providing QoS of packet transmission is provided. The packet transmission from and to the mobile communication device is performed by repeating a predetermined number of interlaces by a predetermined cycle. In the mobile communication device, a wireless module transmits a first sub-packet of a first packet and a first sub-packet of a second packet to a mobile communication network, and receives a response message corresponding to the first sub-packet of the first packet from the mobile communication network, wherein the first sub-packet of the first packet is transmitted in a first interlace prior to a second interlace in which the first sub-packet of the second packet is transmitted.Type: ApplicationFiled: April 6, 2010Publication date: October 6, 2011Applicant: VIA TELECOM, INC.Inventors: Jae Sun Lee, Su-Lin Low
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Publication number: 20110235587Abstract: A wireless communications device is provided with a plurality of card slots, a first wireless communications module, and a second wireless communications module. The card slots are inserted with at least one subscriber identity card. The first wireless communications module performs wireless transceiving in compliance with at least a first wireless technology. The second wireless communications module determines at least a first subscriber number and a second subscriber number from the at least one subscriber identity card, and enables the wireless transceiving of the first wireless communications module using the first subscriber number. Also, the second wireless communications module performs wireless transceiving in compliance with at least a second wireless technology using the second subscriber number.Type: ApplicationFiled: March 29, 2011Publication date: September 29, 2011Applicant: VIA TELECOM, INC.Inventors: Ker Zhang, Hong-Kui Yang, Sheng-Hung Wang, Huai-Wen Su, Jian Gu, Amelia Hungmei I, Chia-Hsun Liu
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Patent number: 8023944Abstract: 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: GrantFiled: April 3, 2009Date of Patent: September 20, 2011Assignee: Via Telecom, Inc.Inventor: Jen-Sheng Huang
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Publication number: 20110222509Abstract: A wireless apparatus having one or more first radios, one or more second radios, interface control, and a processor. The one or more first radios are coupled to one or more first communication links. The one or more second radios are coupled to one or more second communication links. The interface control is coupled to the radios, and selects and executes communications over a specific one of the one or more second communication links following termination of a fallback session over one of the one or more first communication links, where RAT information is employed by the interface control to select the specific one of the one or more second communication links. The processor receives, processes, and provides to the interface control the RAT information, where the RAT information is received prior to termination of the fallback session or as part of termination of the fallback session.Type: ApplicationFiled: December 20, 2010Publication date: September 15, 2011Applicant: VIA TELECOM, INC.Inventor: Anthony S. Lee
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Patent number: 8010865Abstract: A control channel encoder that uses a channel structure that efficiently transmits more information bits, yet achieves sufficient detection and false alarm performance. Disclosed embodiments use a fixed encoder packet size, tail-biting convolutional coding, and Cyclical Redundancy Check (CRC). Further disclosed is a control channel decoder using Viterbi Decoding and a circular trellis check.Type: GrantFiled: January 24, 2008Date of Patent: August 30, 2011Assignee: Via Telecom, Inc.Inventors: Jian Gu, Hongkui Yang, Pengcheng Su
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Publication number: 20110194555Abstract: A receiver for maintaining parameters of packets received from a transmitter is provided. In the receiver: a first module receives packets from the transmitter and decodes the packets to obtain corresponding payload data, wherein each received packet is transmitted in accordance with a first set of parameters predetermined before decoding of the packets, a second set of parameters which are dynamically determined when the packets are being decoded, and a third set of parameters which are determined after the packets have been decoded. Also, a record generating module generates a record for each received packet, wherein the record comprises the first set, the second set, and the third set of parameters and a buffering module stores the record and corresponding payload data of each received packet. A second module retrieves the record and corresponding payload data from the buffering module, and processes the corresponding payload data according to the record.Type: ApplicationFiled: February 8, 2010Publication date: August 11, 2011Applicant: VIA TELECOM, INC.Inventors: Qiang Shen, Tarun Tandon, Alon Saado