45results about How to "Avoid self interference" patented technology

In a telecommunications network including a plurality of mobile terminals in communication with a network base station, and a plurality of relay nodes configured to assist the base station with data transmissions between the base station and one or more of said plurality of mobile terminals, a method of enabling communication resource reuse amongst the plurality of said relay nodes, the method comprising: predefining a plurality of communication resource sets, each resource set comprising one or more communication resource elements, the communication resource sets arranged so that each relay node can receive data in a predefined receiving resource set and transmit data in a predefined transmission resource set; determining which of two or more relay nodes are spatially separated from one another; and configuring at least two of the two or more spatially separated relay nodes to use the same communication resource sets.

An interim wireless communications system, including base stations BS, transit stations and user terminals RS; the RS and BS respectively, provide user terminals and communication interface, the RS includes a frequency division duplex FDD wireless transceiver and network-based coding technology wireless link layer processing unit; BS and end users FDD - included in both wireless transceiver and decoding technology based on the wireless network link layer processing unit; RS, BS and user terminals FDD wireless transceiver contains the wireless transmitter FDD physical layer processing units and wireless receiver FDD physical layer processing unit; the transmitter RS FDD physical layer department rationale receiver modules and FDD physical layer processing unit with BS and user terminals in receiver FDD physical layer processing units and wireless transmitter FDD physical layer processing unit counterparts. In addition, the inventionincludes a transit system based on the communication method whichcanincrease the throughput of transit.

The invention discloses a method for processing self-interference of inter-band carrier aggregation. The method includes that a self-interference combination set is created for a receiving frequency band in each carrier aggregation frequency band supported by equipment; and the equipment detects whether other transmission frequency bands meeting switching conditions are available or not when the receiving frequency bands are in receiving states and the equipment determines that current transmission frequency bands are in the self-interference combination sets of the receiving frequency bands, and a self-interference avoiding selection strategy is actuated according to a detection result. The invention further discloses a device for processing the self-interference of the inter-band carrier aggregation. According to the scheme, the method and the device have the advantages that the self-interference of the inter-band carrier aggregation can be prevented, and problems of influence of the self-interference of the inter-band carrier aggregation to the performance of carrier aggregation and communication loss are prevented.

The invention mainly consists of the base station (BS), the relay station (RS), and the user terminal (UT). RS provides interfaces to comm. respectively with BS and UT. RS includes two time-division duplex (TDD) wireless emitter physical layer units (WEPLU) working on different frequencies and two TDD wireless receiver's physical layer units (WRPLU) working on corresponding different frequencies. BS and UT possess respectively FDD-WEPLU and FDD-WRPLU working on the corresponding frequencies against the RS frequencies. Besides, the invention sets related physical layer frame structure of BS and RS. Therefore, the wireless relay comm. can be realized between BS and RS via the physical layer frames. Via the FDD-TDD combination/ TDM/ TDMA, the invention ensures the relay comm. between RS, BS and MS/ SS effectively and avoids the various interferes may be existed effectively.

A full duplex, low latency, near field data link controls a static and/or dynamic resonant induction, wireless power transfer system used for recharging electric vehicles and other electrically powered devices. A coherent transponder configuration enables low complexity synchronous detection and positive rejection of signals originating from nearby and adjacent vehicles. A reference crystal oscillator in the ground side apparatus provides frequency synchronization for both the forward and the return data links. Transmission is by means of near field magnetic induction between pairs of loop antennas which, together with the effective waveguide below cutoff structure comprised by the vehicle underbody and the ground surface, largely restrict signal propagation to the area in the immediate vicinity of the system antennas.

The related wireless transfer communication method comprises: in down and up subframe of BS physical layer frame structure, setting down and up transfer areas; setting down/up transfer area on down/up subframe of BS physical layer frame structure to define and receive the transfer data time slot of BS down/up transfer area; among BS, RS and UE, using the said set BS and up-down physical layer frame of RS for wireless transfer communication by FDD way. This invention can ensure the transfer communication without interface.

The present invention discloses a method for detecting the system self-interference in the time division duplex wireless cellular communication network, which comprises the steps of: confirming the business area coverage for detecting self-interference; arranging an exclusive transmitting cell in the business area coverage, and other cells are arranged to be receiving cell; arranging a carrier frequency and synchronous measuring frame for all the cells in the business area coverage; arranging time slot in the measuring frame for the transmitting cell in the assigned carrier frequency and at the same time arranging receiving time slot in the measuring frame for all the receiving cells in the assigned carrier frequency; assigning the transmitting time slot to transmit the signal of the cell when the transmitting cell is in the assigned carrier frequency; assigning the receiving time slot in the measuring frame to receive the transmitted signal when the receiving cell is in the assigned carrier frequency; and judging whether a system self-interference generates between the transmitting cell and the receiving cell according to whether a transmitted signal is received by the receiving cell in the receiving time slot. The self-interference of the TDD system can be effectively detected with the method of the invention.

A method and apparatus for preventing interference in a relay device (1) and a mobile terminal (2) of a wireless relay network based on synchronous HARQ are provided. Wherein, the mobile terminal judges whether an uplink HARQ process will interfere with communication between the relay device and a base station (0) in a sub-frame, and if yes, the mobile terminal will suspend sending uplink signal for the uplink HARQ process in the sub-frame.

The invention discloses a correlation rotation precoding method applied to a GFDM communication system. The problem of relatively low symbol error rate transmission performance of a generalized frequency division multiplexing GFDM communication system in the prior art is mainly solved. The related rotation precoding method comprises the following specific steps: (1) constructing an autocorrelation matrix; (2) constructing a zero forcing precoding matrix; (3) constructing a correlation rotation matrix; (4) eliminating a multiplicative channel fading factor; (5) constructing a correlation rotation precoding matrix; (6) precoding; and (7) transmitting a to-be-transmitted symbol. The correlation rotation precoding method disclosed by the invention has the advantages of high symbol error rate performance, adverse effects caused by self-interference and multi-path channel interference can be simultaneously eliminated, the interference is utilized to improve the symbol error rate transmission performance of the generalized frequency division multiplexing GFDM communication system, meanwhile the precoding processing method of signals is simple and feasible, and the signal transmission requirements of users in a real environment can be satisfied in a multi-path channel scene.

The invention discloses a six-leg walking robot in parallel connection driven by rotation. The six-leg walking robot comprises a frame and six driving legs in parallel connection, wherein the six driving legs in parallel connection are uniformly distributed on the frame and symmetrically mounted, each of the driving legs in parallel connection has three freedom degrees relative to the frame, and the frame has six freedom degrees in three-dimensional translation and three-dimensional rotation under the coordination of the six driving legs in parallel connection; each of the driving legs in parallel connection comprises a driving mechanism in parallel connection and a leg mechanism, which are connected through an equivalent spherical hinge alpha, wherein the driving mechanism in parallel connection adopts a three branched hinge structure, and the leg mechanism adopts a four rod structure. The six-leg walking robot disclosed by the invention is simple and flexible in structure, light in mechanisms, stable to walk, good in adaptability and suitable for high-speed heavy-load transportation operation under non-structural topographic conditions.

The invention relates to a virtual full-duplex relay transmission method, which comprises the steps that K source terminals S1, S2, S3,..., SK send signals to a relay R1 in an odd-number time slot (2t-1), a relay R2 performs decoding and re-encoding on signals received in the previous time slot (2t-2) and then forwards the signals to K sink terminals D1, D2,..., DK, the K source terminals S1, S2, S3,..., SK send signals to the relay R2 in an even-number time slot 2t, the relay R1 performs decoding and re-encoding on signals received in the previous time slot (2t-1) and then forwards the signals to the K sink terminals D1, D2,..., DK, the relay R1 and the relay R2 take turns to receive and send signals, the K source terminals S1, S2, S3,..., SK always send signals, the K sink terminals D1, D2,..., DK, always receive signals, thereby realizing the same transmission efficiency with a full-duplex relay method. However, signals are sent and received alternately by using two general half-duplex relay in the method, so that a full-duplex self-interference phenomenon is avoided.

The invention relates to an orthogonal frequency division multiple access system and an orthogonal frequency division multiple access method for wireless relay communication. The system provided by the invention comprises a base station (BS), a relay station (RS) and a user terminal. The method mainly comprises the following steps of: setting a downlink relay zone and an uplink relay zone in a time division multiplexing (TDM) way in a downlink sub-frame and an uplink sub-frame of a physical layer frame structure of the BS respectively, setting a downlink relay zone in an uplink sub-frame of a physical layer frame structure of a frequency division duplexing (FDD) wireless receiver of the RS to define a relay sub-channel and orthogonal frequency division multiple access (OFDMA) symbol combinations for the reception of the RS from the downlink relay zone of the BS, and setting an uplink relay zone in a downlink sub-frame of a physical layer frame structure of an FDD wireless transmitter of the RS to define a relay sub-channel and OFDMA symbol combinations for the reception of the RS from the uplink relay zone of the BS; and performing the wireless relay communication among the BS, the RS and the user terminal in an FDD way based on the set uplink and downlink physical layer frames of the BS and the RS. By the system and the method, the single-FDD-wireless-transceiver-based relay communication of the RS can be realized in a communication system, the relay communication among the RS, the BS and the user terminal can be effectively ensured, and kinds of possible interference can be effectively avoided.

The related wireless transfer OFDM access method comprises: in down and up subframe of BS physical layer frame structure, employing TDM-TDM way to set down and up transfer areas; setting down/up transfer area on up/down subframe of physical layer frame structure of RSS FDD wireless receiver to define the transfer sub-channel of down/up transfer area and OFDMA label combination; among BS, RS and UE, using the said set BS and up-down physical layer frame of RS for wireless transfer communication by FDD way. This invention can ensure the transfer communication without interface.

Provided is a mobile communication system wherein a mobile relay station sets a common restricted communication period to mobile stations (UE) under control of the mobile relay station (RN) during a period from the detection of a handover till the application of a new backhaul connected to a base station that is a destination of the handover. For example, during a restricted communication period, such as Measurement gap, the mobile stations under control of the mobile relay station do not perform data transmissions/receptions, so that a back-haul can be set during the Measurement gap.

The invention discloses a processing technology of a packaging film. The processing technology comprises the steps that step 1, film attachment: the film is attached to a conveyor belt body and movesforward along with the belt body; step 2, punching: when the film passes through a drive unit, a spiral coil in an upper drive unit is connected with power and forms an electromagnet together with aniron core, a repulsion force driving a flying cutter to move downward is produced, the flying cutter passes through a through hole of the film and the conveyor belt body at high speed under the actionof the repulsion force and own gravity, adhesive film processing is completed, the flying cutter enters into a lower drive unit, at this time the spiral coil of the drive unit is connected with power, the repulsion force driving the flying cutter to move upward is produced, the flying cutter overcomes its own gravity to move upward at high speed passing through the through hole and film of the conveyor belt, and another adhesive film processing is completed; step 3, steps 1-2 are repeated, until the adhesive film processing is completed. The processing technology of the packaging film is convenient and practical.

Embodiments of the present application provide a wireless communication method and device, which can avoid self-interference of terminal devices as much as possible, and improve performance of a communication system. The method includes: the terminal device determines that the first signal and the second signal cause self-interference or have the possibility of self-interference to the terminal device, wherein the first signal is used between the terminal device and the first network device The signal transmitted by the first carrier, the second signal is a signal transmitted between the terminal device and the second network device by using the second carrier; the terminal device sends the first information to the first network device, and the The first information is used to indicate that the first signal and the second signal cause self-interference to the terminal device or have the possibility of self-interference, and indicate that the terminal device and the second network device use A situation where the second carrier performs signal transmission.

A full-duplex transmission control method, user equipment and base station. Wherein, a full-duplex transmission control method includes: the user equipment obtains a first time resource unit; if the first time resource unit is obtained from the first time resource unit and includes scheduling authorization information indicating full-duplex transmission, the user equipment according to The power offset obtained by the user equipment corrects the first uplink transmission power used for half-duplex transmission to obtain the second uplink transmission power used for the full-duplex transmission; the user equipment according to the first uplink transmission power Two uplink transmission power to transmit an uplink signal on the first time resource unit or the second time resource unit, where the second time resource unit is a time resource unit after the first time resource unit in time.