Abstract: A target gateway operating in a target wireless network receives a request for transferring wireless service of a wireless device from a source access network to the target access network. The target gateway sends a handover initiate message comprising key information including an uplink key to a source gateway operating in the source access network. In response to the handover initiate message, the target gateway receives a handover acknowledgement message that includes user session information including session reference identifiers (SR-IDs) associated with multiple Internet Protocol (IP) addresses of the wireless device. Subsequently, the target gateway forwards a packet of uplink communication by encrypting using the uplink key to a gateway server.
Abstract: A method of selecting resource element for UCI transmission and countering a ping-pong effect includes adjusting transmission parameters without adjusting a channel quality indicator/pre-coding matrix index. The transmission parameters include a modulation coding set of a transport block and a transport block size. Another method of selecting resource element for UCI transmission and countering the ping-pong effect includes selecting a transport block having a highest modulation coding set index or the transport block having a lowest modulation coding set index. Alternatively, the evolved Node B may select the transport block having a largest size or the transport block having the smallest size.
Abstract: A new sequence initialization for demodulation reference signal (DMRS) sequence design used in the LTE-A system is provided. In some implementations, the modulo-2 addition of nSCID and nNDI, both of which are provided in a downlink control information (DCI) message, is used to dynamically select one of a plurality of parameter candidates and the dynamically selected parameter is then used for determining the initialization state of a DMRS sequence. In some other implementations, the modulo-2 addition of nSCID and nNDI is used for determining the least significant bit of the initialization state of the DMRS sequence.
Abstract: Embodiments of the present invention pertain to optical wireless architecture, and in particular to novel optical architecture to provide wireless (mm)-wave signals and symmetrical wireline service with long-reach. Certain embodiments of the invention pertain to a novel method and apparatus to provide 12.5-Gb/s wireless signals at 60-GHz millimeter (mm)-wave and 100-Gb/s symmetrical wireline service with 80 km long-reach, for example. Moreover, novel enabling techniques are employed to overcome fiber dispersion, reduce costs, and provide super-broadband and long-reach service.
Abstract: Techniques for facilitating wireless communications include receiving a registration request (such as a mobile internet protocol MIP registration request, and transmitting, based on the received registration request, an accounting message indicating support of an accounting mode. The accounting mode may, for example, include performing accounting for a mobile station at a packet data serving node (PDSN) that is serving the mobile station.
Abstract: A system for implementing VoIP over a cloud-based network includes a first edge proxy server operatively connected to a plurality of target proxy servers to receive resource information from one or more of the target proxy servers. Each target proxy server is associated with the cloud-based network. A first endpoint is operatively connected to the first edge proxy server and is configured for voice communications with a second endpoint. The voice communications are facilitated by the first edge proxy server using the received resource information.
Abstract: An optical signal transmitting system, comprising: an optical transmitter including one or more input terminals and an output terminal; and a temporal polarization interleaver including an input terminal and an output terminal, wherein the output terminal of the optical transmitter is communicatively coupled to the input terminal of the temporal polarization interleaver, wherein: the optical transmitter is configured to receive one or more input signals through its one or more input terminals, generate an output signal using the one or more input signals, the output signal including a x-polarized tributary and a y-polarized tributary that is pulse-to-pulse aligned with the x-polarized tributary, and transmit the output signal to the temporal polarization interleaver; and the temporal polarization interleaver is configured to receive the output signal from the optical transmitter and cause a predefined phase delay to one of the x-polarized tributary and the y-polarized tributary.
Abstract: An outdoor radio communication system housed in a single enclosure comprises a first transceiver, a second transceiver, a communication interface unit, an RF in-phase transmit combiner, an antenna coupling unit and a receive filter. The first transceiver includes a first receiver and a first transmitter. The second transceiver includes a second receiver and a second transmitter. The two transceivers are communicatively coupled with the communication interface unit. The RF in-phase transmit combiner, communicatively coupled to the first transmitter and the second transmitter, receives a phase-aligned RF signal from each transmitter, to create a third RF signal with enhanced signal gain. The two phase-aligned RF signals originate from the same source in the communication interface unit. The antenna coupling unit is communicatively coupled to the RF in-phase transmit combiner and the first receiver, and the receive filter is communicatively coupled to the second receiver.
Abstract: Methods, apparatus and systems for group paging of wireless devices are described. A wireless device is associated with a member identifier (MID) that is a unique identifier for the wireless device. The wireless device is associated with a group identifier (GID) that is a unique identifier for a group of which the wireless device is a member. The wireless device is woken up from a sleep mode at a wake-up time based on the GID.
Abstract: Systems, methods and apparatus for operating an optical network terminal (ONT) in a passive optical network include maintaining an operational state in the passive optical network, estimating an upstream channel, adjusting equalization delay and physical layer frame offset values and switching from a backup mode to a primary mode of operation upon detecting a failure condition.
Type:
Grant
Filed:
November 20, 2012
Date of Patent:
May 5, 2015
Assignees:
ZTE Corporation, ZTE (USA) Inc.
Inventors:
Denis Andreyevich Khotimsky, Dan Geng, WeiLiang Zhang
Abstract: Technologies that, among other things, provide resource allocation in multi-hop wireless networks with relay stations and can be used to supply information to link data packets with a respective resource allocation.
Type:
Grant
Filed:
December 20, 2012
Date of Patent:
April 21, 2015
Assignee:
ZTE (USA) Inc.
Inventors:
Hua Mary Chion, Jerry Pak Lup Chow, Hongyun Qu
Abstract: A system includes a control board, a controlled board, and a connector connecting the control board to the controlled board. The control board includes a processing unit that configures the reference voltage signals, a non-volatile memory that stores information about the reference voltage signals, and a DAC that outputs the reference voltage signals in accordance with instructions from the processing unit. The controlled board includes: first and second voltage reference devices that receive first and second reference voltage signals, respectively, and a radio-frequency device that receives a first frequency signal and a second frequency signal and outputs a third frequency signal based on one of the first and second reference voltage signals. The connector includes an analog line for providing reference voltage signals to the first and second voltage reference devices and a digital line for providing control signals to activate one of the first and second voltage reference devices.
Type:
Grant
Filed:
January 22, 2014
Date of Patent:
April 21, 2015
Assignee:
ZTE (USA) Inc.
Inventors:
Aleksandr Semenyshev, Shawn Walsh, Ying Shen, Thanh Hung Nguyen, Hong Hu
Abstract: Methods and apparatus for enhancing a search performance for timing includes a mobile station that detects a plurality of signals, each from one of a plurality of cells, wherein one of the plurality of cells is identified by the mobile station as a strong cell and the remaining cells are identified by the mobile station as weak cells. A first matched filter is applied to a signal from the strong cell to detect first parameters associated with the strong cell. A second matched filter is applied to at least one signal from one or more of the weak cells resulting in at least one second matched filter output. Interference is removed from the at least one second matched filter output to detect one or more second parameters associated with one of the weak cells and to establish a timing of one of the weak cells.
Abstract: A computing network, including: a plurality of peer computing devices including code, which when executed by a peer computing device causes the executing peer computing device to cooperate with at least one other of the peer computing devices; at least one server including code, which when executed by the at least one server locates at least one of the peer computing devices; and at least one mediator including code, which when executed by the at least on mediator collects charging information from at least some of the peer computing devices; wherein, the peer computing devices, at least one sever and at least one mediator are communicatively coupled via an at least carrier-grade telecommunications network being suitable for enhancing cooperation among the cooperating ones of the peer computing devices relative to best-efforts communications among the cooperating ones of the peer computing devices.
Abstract: A microwave transmit/receive enclosure comprises an enclosure housing and one or more I/O connection ports that are mounted on one side of the enclosure housing. The enclosure housing contains a removable communication connector and a removable memory card. Both the removable communication connector and the removable memory card can be inserted into or removed from the enclosure housing via the same I/O connection port.
Abstract: An outdoor radio communication system comprises a first radio unit, a second radio unit, and a single cable coupling the first radio unit to the second radio unit. Each radio unit includes a downconverter, a radio processor that is communicatively coupled to the downconverter, and a XPIC module. The cable further includes a first twisted-pair of wires for communicatively coupling the first downconverter to the second XPIC module and a second twisted-pair of wires for communicatively coupling the second downconverter to the first XPIC module. The first XPIC module generates a first reference signal using a signal from the second downconverter to cancel cross-polarization interference in an output signal of the first radio processor. Similarly, the second XPIC module generates a second reference signal using a signal from the first downconverter to cancel cross-polarization interference in an output signal of the second radio processor.
Abstract: Methods and devices are provided to facilitate production of optical signals that exhibit reduced crosstalk noise and intersymbol interference. In some configurations, a multi-stage optical interleaver, including a first and a second optical interleaver, is used to process a first and a second set of input optical channels. The composite optical output of the multi-stage interleaver includes the first set of optical channels and the second set of optical channels, where each of the first and second set of input optical channels is processed once by the first optical interleaver and once by the second optical interleaver. As such, the first and second sets of input optical channels are each filtered twice using only two optical interleavers.
Abstract: Techniques, apparatuses, and systems include mechanisms for interworking circuit service fallback. In one implementation, a system for wireless communications can include one or more first base stations forming a first radio access network to provide wireless communications based on a first wireless technology; one or more second base stations forming a second radio access network to provide wireless communications based on a second wireless technology which is different from the first wireless technology, and an interworking service (IWS) module that is configured to provide the interworking between the first and second radio access networks for communications to a wireless device served by the system via either the first wireless technology or the second wireless technology, and uses a signal adaptation protocol to encapsulate messages in communicating with a wireless device served by the system. Other implementations are also provided in this document.
Abstract: A flexible OFDM/OFDMA frame structure technology for communication systems is disclosed. The OFDM frame structure technology comprises a configurable-length frame which contains a variable length subframe structure to effectively utilize OFDM bandwidth. Furthermore, the frame structure facilitates spectrum sharing between multiple communication systems.
Type:
Grant
Filed:
January 6, 2011
Date of Patent:
February 10, 2015
Assignee:
ZTE (USA) Inc.
Inventors:
Sean Cai, Jerry Chow, Hongyun Qu, Huiying Fang