Abstract: An override subsystem on the host side of a serial data link between the host and a peripheral detects and diagnoses link errors by comparing the states of the port's link-layer component and physical layer. An override controller accesses a data-store containing stored policies for responding to particular errors. After selecting the appropriate policy, the override controller takes control of the physical layer, the link-layer component, or both, reconfigures them according to the policy to correct the errors, and returns control of the physical layer to the host controller and link-layer component. As well as error recovery, the override subsystem may be used by applications or drivers to asynchronously manage power consumed by the link.
Abstract: Multi-layer configurable timing switch fabrics and related methods are disclosed for selectively distributing multiple timing sources to multiple timing consumers. Configurable timing switches are used at central and multiple local levels within the housing for a network-connected processing system to selectively distribute the timing sources to the timing consumers. As such, significant flexibility is provided with respect to what timing sources can be received within the system and how these timing sources are distributed to different timing consumers. Further, timing information can be generated within the network-connected processing system based upon network communications received from timing consumers, and this generated timing information can also be used as timing sources for the multi-layer configurable timing switch fabric.
Abstract: Embodiments for long training field (LTF) sequences or other types of sequences in uplink multi-user multiple-input multiple-output communications are provided. The LTF sequences can permit channel estimation, including determination of carrier frequency offsets. In some embodiments, an LTF sequence can be formatted and/or conveyed without reliance on pilot tones. In other embodiments, the LTF sequence can rely on pilot tones, where a sequence associated with the pilot tones can include elements that are orthogonal among transmitter station devices that communicate according to MU-MIMO.
Abstract: A method and device for discovering a WiFi display service in a Wi-Fi direct (WFD) network, the method includes: generating a service discovery request frame for discovering a service supported by a second WFD device in the WFD network; transmitting the service discovery request frame to the second WFD device; and receiving a service discovery response frame from the second WFD device in response to the service discovery request frame, wherein the service discovery request frame and the service discovery response frame are generated by using a generic advertising service (GAS) initial request frame of 802.11u and a GAS initial response frame of 802.11u, respectively.
Abstract: The present invention employs a pilot scheme for frequency division multiple access (FDM) communication systems, such as single carrier FDM communication systems. A given transmit time interval will include numerous traffic symbols and two or more short pilot symbols, which are spaced apart from one another by at least one traffic symbol and will have a Fourier transform length that is less than the Fourier transform length of any given traffic symbol. Multiple transmitters will generate pilot information and modulate the pilot information onto sub-carriers of the short pilot symbols in an orthogonal manner. Each transmitter may use different sub-carriers within the time and frequency domain, which is encompassed by the short pilot symbols within the transmit time interval. Alternatively, each transmitter may uniquely encode the pilot information using a unique code division multiplexed code and modulate the encoded pilot information onto common sub-carriers of the short pilot symbols.
Abstract: A high-efficiency wireless local-area network (HEW) device including physical layer and medium access control layer circuitry is disclosed. The physical layer and medium access control layer circuitry may be configured to encode data with a binary convolutional code (BCC) to generate encoded data, and interleave the encoded data in accordance with one of a plurality of interleaver configurations for one of a predetermined number of data subcarriers to generate interleaved encoded data. The physical layer and medium access control layer circuitry may be further configured to map the interleaved encoded data with a quadrature amplitude modulation (QAM) greater than 256 QAM onto longer-duration orthogonal frequency division multiplexed (OFDM) symbols, and transmit the longer-duration OFDM symbols on channel resources in accordance with an orthogonal frequency division multiple access (OFDMA) technique.
September 22, 2015
Date of Patent:
October 2, 2018
Intel IP Corporation
Thomas J. Kenney, Mohamed K. Hassanin, Shahrnaz Azizi
Abstract: Technologies are generally described for determining a quality-of-service of mobile applications. In some examples, a process for determining a quality-of-service of a mobile application executing on a mobile device coupled to a network includes collecting, by a mobile monitoring application (MMA), network usage measurements associated with multiple network communication sessions from a first network communication layer, wherein the multiple network communication sessions are conducted via the network and are associated with the mobile device. The process may also include evaluating, by the MMA, the collected network usage measurements to determine application-specific usage data associated with the mobile application, and determining, by the MMA, the quality-of-service of the mobile application based on the application-specific usage data.
Abstract: A method, a transmitter and a computer program product for processing data units at the transmitter are disclosed. In one embodiment, data units are transmitted to a receiver according to a protocol and with respective sequence numbers. The protocol indicates that the receiver is to use a reordering window to determine whether a data unit which is newly received from the transmitter is a new or repeated data unit the data stream by comparing the sequence numbers of the newly received data unit and a previously received data unit. A status report is received and based thereon, the sequence number of a next data unit to be transmitted in a new cell following a handover is selectively adjusted such that the next data unit will be determined to be a new data unit. The next data unit is transmitted with the adjusted sequence number to the receiver.
Abstract: Method and apparatus for processing access point (AP) crowdsourcing data are disclosed. In one embodiment, the method comprises receiving WiFi scan lists and their corresponding location descriptions, where the WiFi scan lists and their corresponding location descriptions include information observed about at least one access point device, consolidating the WiFi scan lists and their corresponding location descriptions based at least in part on a set of selection criteria to generate a WiFi AP record, where the set of selection criteria comprises a maximum number of scan lists to be uploaded in a predetermined period of time and the maximum number of scan lists to be uploaded in a single upload, and uploading the WiFi AP record to a crowdsourcing server.
Abstract: Systems and methods are disclosed for measuring received signal power at a mobile terminal in a cellular communications network in such a manner as to efficiently provide highly accurate received signal power measurements in the presence of strong inter-cell interference. In one embodiment, in order to measure received signal power for a measured cell, a mobile terminal selects weighting parameters for a number of time-frequency samples of a reference signal of the measured cell based, at least in part, on inter-cell interference from one or more synchronized interfering cells and inter-cell interference from one or more non-synchronized interfering cells. The mobile terminal applies the time-frequency samples of the reference signal of the measured cell and the corresponding weighting parameters to corresponding time-frequency samples of a received signal from the measured cell in order to obtain a measurement of the received power for the measured cell.
September 20, 2012
Date of Patent:
September 11, 2018
Telefonaktiebolaget L M Ericsson (publ)
Chester Park, Stephen Grant, Bengt Lindoff
Abstract: An apparatus and a method are described, by which a fragmentation probability is determined which indicates a probability of fragmentation of frequency resources in at least one network section for at least one network operating entity. Moreover, an apparatus and a method are described, by which frequency resources in at least one network section are allocated and/or de-allocated, priorities of frequency resources are defined for at least one network operating entity individually, and allocating and/or de-allocating of the frequency resources for the at least one network operating entity is performed based on the priorities. For allocating and/or de-allocating of the frequency resources, also the fragmentation probability may be taken into account.
Abstract: A method of a user equipment (UE) operating in a wireless communication system is provided. The UE transmits a first subframe. The UE transmits a second subframe following the first subframe consecutively. When the first subframe and the second subframe are overlapped, the first subframe is transmitted completely while the second subframe is transmitted partially.
August 8, 2016
Date of Patent:
September 4, 2018
LG ELECTRONICS INC.
Joon Kui Ahn, Ki Jun Kim, Bin Chul Ihm, Young Woo Yun
Abstract: To provide a user terminal, radio base station apparatus, radio communication system and radio communication method that support increases in the number of users, a user terminal is provided with a reception section that receives a downlink control signal multiplexed into radio resources from the starting OFDM symbol to a predetermined OFDM symbol in a subframe, and a downlink control signal subjected to frequency division multiplexing with a downlink data signal into radio resources after the predetermined OFDM symbol, a retransmission check section that performs a retransmission check on the downlink data signal based on the downlink control signal subjected to frequency division multiplexing to output a retransmission response signal, and a selection section that selects a radio resource of an uplink control channel used in transmission of the retransmission response signal.
Abstract: A device may include a receiver configured to receive messages about first transmission rates provided by cooperation devices configured for device-to-device (D2D) communications in a radio communication system supporting the D2D communications; a determiner configured to determine second transmission rates for the device to suggest to the cooperation devices based on the first transmission rates; and/or a transmitter configured to transmit messages about the second transmission rates to the cooperation devices. The determiner may be further configured to change the second transmission rates until the first transmission rates converge. The determiner may be further configured to determine a final transmission rate suggested to the cooperation devices based on the converged first transmission rates.
Abstract: Methods, devices, and systems for managing a wireless mesh network are described herein. One method includes monitoring an outgoing data queue length of a node of a wireless network, determining that the outgoing data queue length exceeds a particular threshold, reducing a video quality associated with the outgoing data queue, and sending a notification to an additional node of the wireless network to reduce a video quality associated with an outgoing data queue of the additional node.
Abstract: A wireless communication system (100) is disclosed in which UEs (120a-120c) can operate in a cellular mode wherein data is transmitted from one UE to another via one or more access nodes in a cellular network, and at least some UEs (120c) are D2D-UEs which can also operate in a direct communication mode wherein a pair of D2D-UEs transmit data directly from one to the other, wherein D2D-UEs operating in the direct communication mode maintain control signaling connection with the network and periodically change to the cellular mode and send CSI to the network, and the network uses CSI and/or network available geographical location information for D2D-UEs in determining whether to cause D2D-UEs to operate in the direct communication mode or the cellular mode.
Abstract: Implementations of the present disclosure involve an apparatus and/or method for an efficient packet queue depth sorting scheme for a ‘longest queue first’ based switch fabric device. In general, the sorting scheme compares a data queue length on an incoming port to a sorted queue of available ports based on longest queue. Based at least on the results of the comparison of the data queue length on the input port, a port designator is inserted into a re-sorted longest queue available port list in the proper position based on the incoming or outgoing port data length. The remaining entries are then sorted around the inserted port designator. Because the comparison and insertion of the port designator can occur in one clock cycle of the switch fabric device, efficiency of the switch is improved.
Abstract: A method of negotiation of media between a source communication device and a destination communication device for multiplexing multiple media types on an IP transport address comprises the source communication device generating an offer message comprising an extension to the ICE protocol according to RFC 5245 to specify the IP transport address whereon the multiple media types can be multiplexed, wherein the offer message comprising the extension indicates support for both the multiplexing and a non-multiplexing of the multiple media types, and sending the offer message from the source communication device to the destination communication device.
Abstract: A radio communication device includes a wireless transmission circuit and a control processing circuit adapted to interact with the wireless transmission circuit to transmit and receive wireless signals, the control processing circuit configured to perform a Media Access Control process including selecting a packet aggregation size based on a channel quality metric of a wireless channel and a payload transmission efficiency metric of the wireless channel, electing one or more packets based on the packet aggregation size, and generating a single Media Access Control aggregated header and encapsulating the one or more packets with the single Media Access Control aggregated header, the wireless transmission circuit configured to transmit the one or more packets and the single Media Access Control aggregated header via the wireless channel.
Abstract: A method of acquiring frequency hop timing synchronization includes a propagation delay time computation process of computing a minimum and maximum propagation delay times according to an error of a location of a satellite communication terminal, which is input by an operator of a ground satellite terminal, and a delay transmission process of transmitting a ranging signal after a certain time upon the transmission of the ranging signal through a ranging-dedicated hop group having a hop duration time that is set in consideration of the maximum propagation delay, the minimum propagation delay, a ranging time, and a timing error due to a positional change of a satellite, in order to avoid collisions between the ranging signal and other signals. The satellite communication terminal may receive a ranging signal that was transmitted by the satellite communication terminal and control a timing for determining whether synchronization is acquired and a timing for performing transmission.
October 26, 2016
Date of Patent:
July 3, 2018
AGENCY FOR DEFENSE DEVELOPMENT
Juhyung Lee, Byunggak Jo, Chulhee Choi, Dhongwoon Jang, Yeesoo Han