| Patent application number | Description | Published |
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| 20080242827 | Method for producing omni-meta aromatic polysulfonamide fiber - The invention relates to a method of preparing omni-meta aromatic polysulfonamide fiber which comprises three steps of preparing spinning dope, wet spinning and post treating. The said step of preparing spinning dope comprises the following steps: (1) dissolving 3,3′-diaminodiphenyl sulphone in a polar organic solvent and cooling it to −20˜20° C.; (2) adding m-phthaloyl chloride of the same mole of the 3,3′-diaminodiphenyl sulphone to carry out a polymerization reaction; (3) then adding an inorganic base of the same mole of 3,3′-diaminodiphenyl sulphone to neutralize the hydrogen chloride produced during the polymerization reaction. The spinning dope thus prepared has a polymer solid content of 10%-20%. The fiber prepared according to the method in the present invention has a greatly improved crimpability, and evidently increased elongation at break comparing with the conventional aromatic polysulfonamide fiber, so that the spinnability of resultant yarn is improved. | 10-02-2008 |
| 20090103440 | Collision avoidance for uplink VoIP transmission - Disclosed is a method the includes determining if a collision will occur between a transmission from a first user equipment that uses a persistently assigned uplink resource (such as for VoIP packet transmissions) and a retransmission from a second user equipment that uses a synchronous non-adaptive automatic repeat request procedure (e.g., synchronous, non-adaptive HARQ). If it is determined that a collision will occur, the method dynamically allocates the first user equipment to another uplink resource to avoid the collision, while if it is determined that the collision will not occur, the first user equipment is not dynamically allocated another uplink resource so that the first user equipment sends its transmission using the persistently assigned uplink resource. The embodiments of this invention pertain to both the base station (e.g., an evolved Node-B) and the user equipment. | 04-23-2009 |
| 20090287979 | SYSTEM AND METHOD FOR RELAY CODING - Systems and methods for providing relay in communications systems are disclosed. The relay may receive signals from user equipments (UEs) transmitting coded signals. The relay may receive turbo coded signals from the UEs. The relay station may encode a network channel for transmission to the base station using a recursive systematic convolutional (“RSC”) code. The use of RSC for the network code enables the base station to form as well a distributed turbo code as one can with the UE coded signals. In this manner the base station may recover the signal estimates for the UE signals with lower error probability when estimates at the relay station include errors due to imperfect reception. The use of the relay station and the RSC network code enables the base station to receive UE signals with lower error probability even when the transmission path from the UE is imperfect. | 11-19-2009 |
| 20100151793 | Gain Factor/Matrix for Whole Link Channel Reciprocity in TDD Mimo Relay System - Measured are received power of a first signal received from a first entity, and received power of a second signal received from a second entity. A gain factor (or a matrix of gain factors if multiple antennas are used) is determined using the measured received powers of the first signal and of the second signal. If transmit power from the apparatus to the second entity is considered as the benchmark, the second signal is forwarded from the apparatus to the first entity using a second signal transmit power that is determined using the gain factor. Or, if transmit power from the apparatus to the first entity is considered as the benchmark, the first signal is forwarded from the apparatus to the second entity using a first signal transmit power that is determined using the gain factor. Method, apparatus, and memory storing computer program are detailed. | 06-17-2010 |
| 20100214930 | Relaying Data in a Communication System - The disclosure relates to communication of data in a wireless communication system that enables relaying of data between an originating node ( | 08-26-2010 |
| 20100246599 | Apparatus and Method for Bit Remapping in a Relay Enhanced Communication System - An apparatus and method for bit remapping at a relay node in a communication system. In one embodiment, an apparatus includes a processor configured to remap an order of bits of a received signal from a source node to a different order of bits for a transmitted signal to a destination node when the transmitted signal is constructed with a modulation scheme different from the received signal. | 09-30-2010 |
| 20100278096 | RELAY AND RELATED METHOD - A relay method comprising receiving data from a first node and a second node; estimating the symbols in the data received from said first node and said second node; transmitting the estimated data from the first node to the second node and the estimated data from the second node to the first node. | 11-04-2010 |
| 20100278169 | BI DIRECTIONAL DECODE AND FORWARD RELAY - Methods, apparatus and computer program product provide a bi-directional decode and forward relay having at least 2N antennas configured to perform transmit and receive operations in a wireless communications network; radio apparatus configured to perform relay operations through the at least 2N antennas with at least two other communications devices operative in the wireless communications network, each of the at least two other communications devices having N antennas; and a controller configured to operate the radio apparatus to receive data from the at least two communications devices at a time slot K; to jointly encode the data received from the at least two communications devices using at least one of an XOR or a sum operation; and at a time slot (K+1) to operate the radio apparatus to transmit via one antenna the jointly encoded data to the at least two communications devices. | 11-04-2010 |
| 20110002246 | Data Packet Communications in a multi-radio access environment - More than one radio-access technology is supported in an apparatus, and channel-coding functions in the apparatus are shared between at least two of said more than one radio-access technology. | 01-06-2011 |
| 20110022917 | Protocols for Multi-Hop Relay System with Centralized Scheduling - Various example embodiments are disclosed herein. In an example embodiment, a method of transmitting data via a wireless transmission path that may include a user equipment as a first end point, a base station as second end point, and at least one relay station as an intermediate point(s). The method may include receiving a data transmission from a prior point in the transmission path. Substantially simultaneously: forwarding the received data to the next point in the transmission path, and determining if the received data is corrupt. Transmitting a transmission message to the next point in the transmission path indicating whether or not the received data was corrupt. And, if the data is not corrupt, transmitting a receipt message to the prior point indicating that the data was uncorrupt when received. | 01-27-2011 |
| 20110026409 | Method, Devices and System for Local Collision Avoidance for Random Access in Relay Networks - An apparatus such as a user equipment is in an embodiment of the invention configured to broadcast an access request to at least one neighboring node, the access request containing signature information indicating a user identifier, to check whether a collision indicator is received from a relay node, and to send another access request depending on a received collision indicator. The collision indicator may e.g. be a signature collision indicator, received from the node in case of colliding users, or a collision indicator of transmission received when transmissions of access requests are colliding at the node. A relay node may be configured to receive an access request from a user equipment, to detect a collision, and to inform the user equipment on a detected collision, indicating a type of collision. | 02-03-2011 |
| 20110026427 | METHOD AND APPARATUS IN RELAYING SYSTEM - An apparatus, comprising a channel estimator for estimating channel coefficients of communication channels of multiple-input-multiple-output communication, a precoder for applying the estimated channel coefficients to precode a transmit signal to cancel the impact of the communication channels on the transmit signal, a first controller for providing the transmit signal for multiple-input-multiple-output transmission in a first timeslot, a second controller for processing a multiple-input-multi-signal from the receive signal. | 02-03-2011 |
| 20110044295 | METHOD AND APPARATUS FOR TRANSMISSION MODE SELECTION IN COOPERATIVE RELAY - In accordance with an example embodiment of the present invention, an apparatus, comprising at least one processor; and at least one memory including computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to perform at least the following: select at least two relay stations from a plurality of relay stations; determine a transmission mode for cooperatively forwarding a data packet by the selected relay stations; schedule a resource allocation for the selected relay stations based at least in part on the transmission mode; and notify the selected relay stations of the resource allocation, is disclosed. | 02-24-2011 |
| 20110069653 | MULTICAST SERVICE - A method including sending a multicast packet to a cluster of recipients; receiving information indicating receiving status relating to the multicast packet from individual members of the cluster of recipients; and initiating intra-cluster retransmission of said multicast packet by sending to the cluster of recipients collective information about the receiving statuses of the members of the cluster of recipients. | 03-24-2011 |
| 20110151774 | LOAD STATUS INDICATOR FOR MULTIHOP RELAY SYSTEM USING DISTRIBUTED SCHEDULING - A method includes receiving at a relay node a load status indicator from a subordinate relay node, determining a load status of the relay node and forwarding the received load status indicator to a super-ordinate node if the determined load status does not indicate an overload condition, otherwise if the determined load status does indicate an overload condition sending a load status indicator of the relay node to the superordinate node. Another method includes, in a multihop relay network having a plurality of relay nodes, receiving over a communication link at a network access node a load status indicator from a relay node, the load status indicator identifying a nearest relay node, if any, at which a current load exceeds a threshold; and using the received load status indicator at least when making a network admission decision for a user equipment. | 06-23-2011 |
