867results about How to "Accurate reception" patented technology

The interior cabin of a vehicle is provided with a vehicular sound-processing system that comprises an interior rearview mirror assembly, the mirror assembly including a mirror housing and a reflective element. An accessory is located in the interior cabin. The interior rearview mirror assembly comprises a user-interaction site for a wireless communication system, the wireless communication system communicating with the accessory. The user-interaction site comprises at least one microphone for producing an audio output in response to detection of vocal input of a human speaker in the interior cabin with the vehicle cabin noise superimposed thereon. Preferably, the user-interaction site further comprises at least one manually operated control input. The restricted-range wireless communication system preferably comprises one of a radio frequency restricted-range wireless communication system and an infrared restricted-range wireless communication system. Signals indicative of the vocal input detected at the user-interaction site of the interior mirror assembly are wirelessly broadcast to the accessory located in the interior cabin of the vehicle.

To improve electronic part packaging efficiency without sacrificing the transmission distance of a radio IC tag, a recess is formed in the front side surface of a printed wiring board. An IC chip is placed in the recess so that the IC chip does not protrude from the front side surface, a first major surface 1a and a second major surface of the printed wiring board. Antenna elements of an antenna are formed on the front side surface on the opposite sides, respectively, of the IC chip, and the antenna is connected to the IC chip. The antenna is a dipole antenna of a length equal to half the wavelength of radio waves to be radiated by the antenna.

Methods and apparatus are provided for inserting data symbols and pilot symbols in an OFDM (orthogonal frequency division multiplexing) transmission resource utilizing frequency hopping patterns for the data symbols and / or the pilot symbols. Data symbols and pilot symbols are allocated for down link (base station to mobile station) and up link (mobile station to bases station) transmission resources in a two-dimensional time-frequency pattern. For each antenna of a MIMO-OFDM (multiple input multiple output OFDM) communication system, pilot symbols are inserted in a scattered pattern in time-frequency and data symbols are inserted in an identical frequency-hopping pattern in time-frequency as that of other antennas.

A system and method for detecting and recording interference in an RF communication channel for an ingestible imaging device is provided. During a period when transmission in a communication channel may be idle, interference levels may be detected and recorded. Changes in transmission levels may be altered based on the detected interference level. Transmission may be delayed due to detected levels of interfering signals.

A method and apparatus of wireless communication between a base station and at least one user equipment. The method includes: transmitting an enhanced physical downlink control channel from the base station to the at least one user equipment using a demodulation reference signal antenna port; transmitting message from the base station to the at least one user equipment which is scheduled by the enhanced physical downlink control channel; receiving the message at the at least one user equipment; determining at the at least one user equipment whether the message was correctly received; and transmitting an ACK / NAK signal on an ACK / NAK resource determined from the enhanced physical downlink control channel from the at least one user equipment to the base station indicating whether the message was correctly received by the at least one user.

A method and apparatus are provided for transmitting user equipment (UE) status information in communication with one serving Node B and at least one non-serving Node B in a mobile communication system. The method and apparatus comprise generating transport channel data including UE status information; transmitting the transport channel data to the serving Node B and the at least one non-serving Node B, receiving a response signal for the transport channel data from the serving Node B, and retransmitting the transport channel data if the response signal received from the serving Node B is a non-acknowledge (NACK) signal, and ending the retransmission of the transport channel data if the response signal received from the serving Node B is an acknowledge (ACK) signal.

A control channel transmission method, transmission processing method, communication node and terminal communication node, said control channel transmission method comprising: determining, in accordance with predefined information, control channel transmission resources; repeatedly transmitting, multiple times, the control channel on the determined control channel transmission resources; said predefined information includes at least one of the following types of information: control channel repetition number, control channel type, service channel type and service channel start position. The present invention solves a technical problem existing in LTE systems, whereby a down-link control channel is not able to engage in repeated sending, and thus allows a network side, when coverage enhancement is needed, to engage in control channel repeated sending, in order to ensure that a terminal requiring enhanced coverage can correctly receive control information issued by a base station, thus ensuring the corresponding data transmission.

The invention provides a reference signal configuring method and system, an apparatus with a base station function, a reference signal receiving method, a reference signal receiving system, and a terminal. The reference signal configuring method comprises: setting at least one discovery reference signal (DRS) in DMTC (DRS measurement timing configuration); configuring a sending parameter for the at least one DRS; and sending the sending parameter to a terminal served by the apparatus with a base station function in order that the terminal receives the at least one DRS according to the sending parameter. The reference signal configuring method may reduce DRS detection complexity for UE while increasing DRS sending probability in order to enable the terminal to accurately receive the DRS and achieve frame synchronization and subframe synchronization.

The invention provides a control channel transmitting method and device, a transmitting processing method and device, a network side device and a terminal, wherein the transmitting method is applied to the network side device. The method comprises the steps that indicating information for indicating the type of a terminal is obtained; when the terminal type indicated by the indicating information is a first terminal type, the control channel is sent to the terminal of the first terminal type on multiple subframes. By the adoption of the technical scheme, the technical problems that in the relevant technologies, a downlink control channel cannot be sent repeatedly and the like are solved, so that the network side can distinguish the terminal to conduct control channel sending under a low-covering environment so as to guarantee that the terminal which has the demand of covering improvement can receive correctly the control information sent by the base station, and data transmitting of the terminal can be guaranteed.

A digital sound processing system suitable for use in a vehicle comprises an interior rearview mirror assembly that includes at least a first microphone and a second microphone. The first microphone generates a first signal indicative of a vocal input with vehicle cabin noise included therewith and the second microphone generates a second signal indicative of a vocal input with vehicle cabin noise included therewith. A digital signal processor is provided that processes the first signal and the second signal and that provides an output signal with reduced vehicle cabin noise. The digital signal processor preferably comprises a microprocessor executing at least one million instructions per second.

A technique for confirming an association between a deposit account and an account holder is provided. The technique includes receiving information identifying the deposit account and identifying the account holder. Other information associated with multiple deposit accounts, each maintained at one of multiple financial institutions, is accessed. The received information and the accessed information are then processed to authenticate the association between the account holder and the deposit account.

Methods, and apparatus for carrying out the methods, are disclosed for synchronizing a plurality of RF transmitters that are supplied with a common digital information signal for carrier modulation and subsequent transmission on a common channel throughout a prescribed region, whereby the digital signal receivers within the region may receive transmissions on the channel from more than one transmitter. The method involves inserting reference signals into the data sent to the transmitters in order to place them into known states at specific times relative to the digital signals sent to them for transmission. As a result of this method, the digital signals transmitted by each of the transmitters will be identical to one another so that the receivers will be able to identify one received signal as the main signal and the others as echoes. If necessary, the signal transmitted by at least one of the synchronized transmitters may be delayed, such that identical digital signals received from at least two of the transmitters by receivers in the region will arrive at each receiver within a prescribed time window. The methods and apparatus also can be applied to one or a plurality of RF transmitters for purposes of synchronizing processes at the source of the signals and at the transmitters.

A voice acquisition system for a vehicle includes a rearview mirror assembly, at least one microphone and a control. The at least one microphone receives audio signals within a cabin of the vehicle and generates an output signal indicative of the audio signals. The at least one microphone provides sound capture for at least one of a hands free cell phone system, an audio recording system and an emergency communication system. The control is operable to receive the output signal from the at least one microphone, and is operable to distinguish the presence of vocal signals from non-vocal signals. The control distinguishes the vocal signals from the non-vocal signals by a ratio of at least 2:1.

This invention relates to a method, system, transmitter, network element, receiver and software application for a system capable of point-to-multipoint transmission, wherein one or more data packets are transmitted from a transmitter to one or more receivers, wherein at least at one specific receiver of said receivers, a reception of repair data packets is required, wherein repair information is signaled to a repair server in order to trigger a transmission of said repair data packets, and wherein said repair information comprises information related to the number of transmitted data packets correctly received at said specific receiver. Said system may for instance be the 3GPP Multimedia Broadcast Multicast System, said transmission of data packets may for instance be controlled by the File Delivery Over Unidirectional Transport protocol and said signaling of said repair information may for instance be controlled by the Hypertext Transfer Protocol.

A multi-antenna communication method capable of improving the retransmission performance in a multi-antenna transmission. In this method, firstly, the reception quality of a substream to be retransmitted is acquired (Step 401). Then, it is determined for the substream whether any transmission antennas, which satisfy a target value related to the foregoing reception quality when they are used for the retransmission, are existent among the transmission antennas that are candidate antennas to be used for there transmission (Step 405). Then, if there exist any transmission antennas satisfying the target value, a transmission antenna to which the poorest channel characteristic corresponds is selected from among those transmission antennas satisfying the target value, and the selected transmission antenna is designated as an antenna to be used for retransmitting the foregoing substream (Step 406). If there exist no transmission antennas that satisfy the target value, then a transmission antenna to which the best channel characteristic corresponds is selected from among the foregoing candidate transmission antennas, and the selected transmission antenna is designated as an antenna to be used for retransmitting the foregoing substream (Step 407).

A system, method and apparatus for establishing a secure wireless radio communications link between two devices that minimizes the exposure of sensitive information to third party interception is disclosed. The secure link is established by first establishing an infrared link between the two devices for the exchange of sensitive information, such as encryption information. Subsequent communications would then have the benefit of encryption protection, establishing the secure wireless radio communications link.

A method for communicating data is provided that includes receiving an asynchronous transfer mode (ATM) cell at a line card and generating an Ethernet frame that comprises the received ATM cell, an Ethernet-compatible header, and a data integrity element. The Ethernet frame is communicated to a first destination. The Ethernet frame is received at the first destination and directed to a second destination. At the second destination, the Ethernet frame is segmented into portions and reassembled in order to form an Ethernet packet. The Ethernet packet is then communicated to the first destination.

The invention discloses a time synchronization method of a master-slave structure multi-node network. Two clock synchronization mechanisms of a response type mechanism and a broadcast type mechanism are designed aiming at the condition that nodes of the network are physically connected through wires, and the communication between the nodes is performed through RS485, RS422, RS232, CAN bus modes. Accurate sending and receiving times of each message can be obtained through FPGA clock sampling. The transmission average delay and the master-slave clock offset are calculated through a response type synchronization mode, and the time precision is compensated and the time synchronization with the nanosecond grade high precision is reached. The time synchronization with the higher precision can be reached when the channel transmission time delay is ignored through a broadcast type synchronization mode.

The present invention relates to radio communications, and discloses a method and apparatus for feeding back and receiving acknowledgment (ACK) information of semi-persistent scheduling (SPS) data packets. The method for feeding back ACK information of SPS data packets includes: receiving an uplink downlink assignment index (UL DAI) from a base station (BS), where the value of the UL DAI indicates the number of downlink data packets (N); mapping ACKs / NAKs of k SPS data packets of the downlink data packets to positions from the (N−k+1)th ACK / NAK to the Nth ACK / NAK; and feeding back N ACKs / NAKs to the BS. This method can guarantee that N ACKs / NAKs are arranged correctly.

A technique for confirming an association between a deposit account and an account holder is provided. The technique includes receiving information identifying the deposit account and identifying the account holder. Other information associated with multiple deposit accounts, each maintained at one of multiple financial institutions, is accessed. The received information and the accessed information are then processed to authenticate the association between the account holder and the deposit account.

This invention relates to a method, a computer program, a computer program product, a system, a sender, a receiver and a session description protocol for transmitting common data from one sender (902) to a plurality of receivers (901) within a transmission session, comprising communicating (802) at least one session parameter, which is related to said transmission of said common data within said transmission session, to said plurality of receivers (901) via a communication protocol; and transmitting said common data from said sender (902) to said plurality of receivers (901) within said transmission session. The invention particularly relates to broadcast / multicast transmission of common data in a wire-bound and / or wireless network, wherein a File Delivery over Unidirectional Transport FLUTE protocol is used.

A base station for use in an OFDM wireless network. The base station transmits to a first subscriber station a first control message indicating a first uplink channel to be used by the first subscriber station for transmitting a first ACK / NACK message to the base station. The base station also transmits a first data traffic message associated with the first control message. The first ACK / NACK message transmitted to the base station indicates whether the first data traffic message was correctly received. The base station may transmit to the first subscriber station a subsequent control message indicating a second uplink channel to be used by the first subscriber station for transmitting a second ACK / NACK message back to the base station. The second uplink channel may be different that the first uplink channel.

A communication gateway can provide a residence or a premises with access to multiple communication services, including reception of TV signals and bidirectional data communication. The gateway can reformat incoming TV signals to provide compatibility with an onsite TV. The incoming TV signals may be digital or may provide a higher level of pixel definition or screen resolution than the onsite TV is configured to handle. The gateway can convert the incoming TV signals into an analog form or can reduce the pixel definition for reception by the onsite TV. To support bidirectional data communications, the gateway can comprise a wireless interface to a LAN and an interface to broader network, such as a WAN. The gateway can process data signals flowing between the LAN and the WAN to provide format compatibility and can track media exposure. In one exemplary embodiment, the WAN can transmit television signals as packets.

A data separating unit separates data to be transmitted into the number of data equal to that of antennas. An error correcting unit performs a coding for error correction on data. An interleave unit interleaves data after the convolutional coding. A preamble adding unit adds an STS to the head of a burst signal. The preamble adding unit, corresponding respectively to a plurality of transmitting antennas, is to store respectively a plurality of STSs to be transmitted in a predetermined period. An IFFT unit performs Inverse Fast Fourier Transform. A GI unit adds a guard interval to data in time domain. A quadrature modulation unit carries out quadrature modulation. A frequency conversion unit performs a frequency conversion. An amplification unit is a power amplifier for amplifying radio-frequency signals. Finally, signals are transmitted from the plurality of transmitting antennas.

A cost effective system for testing smoke detectors and determining and communicating the operating characteristics thereof, advantageously uses existing circuitry components in a secondary communication function. With this arrangement, a low powered RF reporting signal is transmitted from the smoke detector and can be received within several feet of the detector. Preferably the RF signal is produced by a pulsed input signal provided to an existing coil which is part of the circuitry used to produce and / or report alarm signals. A receiving arrangement is also disclosed which can be located in close proximity to a smoke detector which has been activated to report the operating characteristics thereof. These characteristics can then be analyzed to determine whether preventive maintenance is appropriate.

A reader / writer is provided. The reader / writer performing radio communication with a radio communication terminal in close proximity thereto, includes: an antenna which transmits a carrier wave of a predetermined frequency and which receives a composite wave of the carrier wave and a modulated signal of the carrier wave transmitted from the radio communication terminal; a demodulating unit which demodulates the composite wave received by the antenna; a judging unit which judges whether or not it is difficult to detect a modulated component included in the composite wave received by the antenna when the radio communication terminal is in close proximity; and a carrier-wave control unit which reduces a component of the carrier wave input into the demodulating unit when the judging unit judges that it is difficult to detect the modulated component.

A method, a network device, and a system for determining resource mapping in CoMP transmission are disclosed. The method includes: the cooperative cells that perform CoMP transmission for a UE negotiate a mapping rule used by the cooperative cells when the status of the CoMP transmission of the UE changes, where the mapping rule includes the number of and position of OFDM symbols allocated to a PDCCH domain and / or a data channel domain; and the negotiated mapping rule is notified to the UE. In this embodiment, before the downlink signals are transmitted, the mapping rule used by each cooperative cell for CoMP transmission is negotiated between the cooperative cells, and therefore, the UE can accurately receive the signal sent by multiple cooperative cells and the performance of CoMP transmission in the system is improved.

A mobile communication system according to the present invention is provided with a base station and a mobile station that communicates with the base station. In a communication protocol between the base station and the mobile station, a plurality of state update frames are defined in a time domain. The base station is configured to transmit a state update data to instruct that the mobile station is set to either an active state or a suspended state, in each of the plurality of the state update frames. At the same time, the base station is configured to transmit a packet only to the mobile station that has been set to the active state by the state update data. The base station in advance notifies the mobile station of packet transmission by transmitting a control data including a data necessary to receive the packet, earlier than the packet transmission by a predetermined time difference. The mobile station is set to either the active state or the suspended state in response to the state update data. At the same time, the mobile station is configured to receive the control data and the packet when being set to the active state, and is configured not to receive the control data and the packet when being set to the suspended state.

The invention discloses a quick charging system for an unmanned aerial vehicle and a charging method thereof, wherein the quick charging system and the charging method belong to the field of unmanned aerial vehicle charging. The quick charging system for the unmanned aerial vehicle comprises a supporting module, a positioning module and a charging module. The supporting module is used for assisting the unmanned aerial vehicle body in landing and supporting the unmanned aerial vehicle body. The positioning module is used for performing return positioning on the unmanned aerial vehicle body so that the unmanned aerial vehicle body lands on the supporting module. The charging module is used for controlling a charging process. The charging method according to the quick charging system comprises an unmanned aerial vehicle body returning step, an image acquiring and positioning step, a quick landing step, a charging step, etc. The charging process comprises three periods, namely pre-charging, multi-step constant-current charging and pulse charging. According to the quick charging system, the supporting module is combined with other modules for forming a complete charging system, so that the unmanned aerial vehicle body can accurately and quickly land on the supporting module, thereby greatly improving charging efficiency and realizing high autonomy and convenient use.