27results about "Frequency diversity" patented technology

A wireless communication system configured for providing wireless communication is adapted to provide a first radio channel in a radio propagation channel and in a first frequency interval and to provide a second radio channel in the radio propagation channel and in a second frequency interval differing from the first frequency interval. The wireless communication system is to obtain first radio channel information indicating a behaviour of the first radio channel and to manage beamforming for the second radio channel based on the first radio channel information.

The application provides a frequency diversity and polarization diversity transmission system based on diversity antennas, comprising a diversity antenna subsystem, a radio frequency feeding network and a baseband processing unit, the diversity antenna subsystem comprises a first diversity antenna, a second diversity antenna and a metal floor, the first diversity antenna and the second diversity antenna are both at least dual-frequency antennas and are placed in space orthogonally, the radio frequency feeding network comprises a signal phase shifter, an equivalent phase shifter, a power divider and a signal amplifying device, and can realize frequency diversity and twice polarization diversity. The frequency diversity and polarization diversity transmission system based on diversity antennas provided by the application realizes the collaborative innovation of a radio frequency front end and a baseband processing unit, and constructs a complete radio frequency baseband architecture which can simultaneously and actively realize the collaborative processing of polarization diversity and frequency diversity.

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may communicate on a primary carrier using a first antenna port. The UE may communicate on a secondary carrier using a second antenna port. The UE may determine whether to switch the secondary carrier from the second antenna port to the first antenna port based on a channel condition associated with the second antenna port. The UE may switch the secondary carrier from the second antenna port to the first antenna port based on a decision to switch the secondary carrier from the second antenna port to the first antenna port. Numerous other aspects are provided.

A transmitting device (10) performing orthogonal frequency division multiplexing communication includes a subcarrier mapping unit (113) that replicates a subcarrier signal sequence and maps the replicated subcarrier signal sequences at equal subcarrier intervals, and a transmission phase rotation unit (114) that divides each subcarrier signal sequence mapped at the subcarrier intervals into two or more subsets and imparts phase rotation resulting in different time timing to each subset.

An antenna array of frequency-independent phase shifters may be configured to provide band-specific beamforming over a plurality of operating bands by determining, based on a first frequency allocation on a first operating band with first angular directions, at least a second frequency allocation on a second operation band with a second angular directions, so that a first set of predefined requirements comprising at least beamforming requirements on frequency allocations and angular directions are met on all operating bands, determining beamforming weights, and configuring the antenna array to apply the beamforming weights.

The application discloses a frequency diversity array time domain beam control method based on dynamic frequency offset and belongs to the field of microwave and radio frequency electronic technologies. The method comprises the following steps: obtaining a transmission time window and a target angle corresponding to a target beam pointing direction in the transmission time window; in the duration of the transmission time window, based on the target angle, dynamically determining a frequency offset increment between each array element in the frequency diversity array, wherein the frequency offset increment is in inverse proportional relationship with the value of an equivalent time parameter; based on the frequency offset increment, controlling each array element of the frequency diversity array to transmit a signal of a corresponding frequency, so that the synthesized beam continuously points to the target beam pointing direction in the transmission time window. Through dynamic phase compensation, the application offsets the phase drift caused by time accumulation; meanwhile, while reducing the bandwidth requirement, the application physically eliminates beam distortion by using frequency symmetric distribution.

The application discloses a sub-carrier space arrangement index method of MIMO-OFDM system. The method groups source bits of a transmitting end, and respectively carries out QAM modulation and index modulation. The bits after index modulation are mapped into a sub-carrier space arrangement matrix, multiplied with a constellation diagram after QAM modulation, and then subjected to space-time mapping to obtain data to be transmitted by sub-carriers of each transmitting antenna. Then, time domain signals to be transmitted by each antenna are generated through IDFT conversion. At a receiving end, the signals are demodulated through a corresponding mode to obtain a sub-carrier space arrangement matrix and a QAM symbol, and the source bit data is obtained through mapping of the sub-carrier space arrangement matrix and index bits, serial-parallel conversion. The method starts from utilization of space resources, can improve frequency spectrum utilization rate, realizes a certain degree of receiving diversity, and is superior to prior art in bit error rate and demodulation complexity, so that communication quality and frequency spectrum utilization rate reach a balance.

The present application discloses a beam training method, a device, a terminal device, and a network device. The beam training method of the present application includes a step of measuring at least two reference signals for beam training transmitted by an auxiliary device in at least two transmission modes and obtaining measurement information, the measurement information being for indicating an optimal transmission mode of the auxiliary device, the transmission mode of the auxiliary device being determined by a beam direction and a beam phase of the transmission signal of the auxiliary device, and a step of reporting the measurement information to the network device.

An antenna array of frequency-independent phase shifters may be configured to provide band-specific beamforming over a plurality of operating bands by determining, based on a first frequency allocation on a first operating band with first angular directions, at least a second frequency allocation on a second operating band with a second angular directions, so that a first set of predefined requirements comprising at least beamforming requirements on frequency allocations and angular directions are met on all operating bands, determining beamforming weights, and configuring the antenna array to apply the beamforming weights.

Methods, systems, and devices for wireless communication are described. A device may transmit excitation signals to a backscatter device at different frequencies using multiple antenna ports. For example, the device may transmit an excitation signal to a backscatter device using a first antenna port and a second antenna port based on one or more parameters. The excitation signal may include a first frequency component at a first frequency and a second frequency component at a second frequency. The device may perform a frequency exchange or symbol hopping when sending an excitation signal to the backscatter device.

The invention discloses a frequency diversity array time domain beam control method based on dynamic frequency offset, and belongs to the technical field of microwave and radio frequency electronics. The method comprises the following steps: acquiring a transmitting time window and a target angle corresponding to the pointing of a target beam in the transmitting time window; within the duration of the emission time window, based on the target angle, dynamically determining a frequency deviation increment between array elements in a frequency diversity array, the frequency deviation increment being inversely proportional to a value of an equivalent time parameter; and based on the frequency offset increment, controlling each array element of the frequency diversity array to transmit a signal of a corresponding frequency, so that a synthetic beam continuously points to the target beam direction in the transmission time window. According to the invention, through dynamic phase compensation, phase drift caused by time accumulation is offset; and meanwhile, the bandwidth requirement is reduced, and beam distortion is physically eliminated by utilizing frequency symmetric distribution.

The invention provides an antenna and communication equipment, relates to the technical field of communication, and aims to solve the problem of poor consistency of radio frequency transceiving channels. The antenna provided by the invention comprises a feed network, a correction circuit and a plurality of radiation sub-arrays, wherein each radiation sub-array comprises at least one radiation sub-array unit; the feed network is provided with a plurality of radio frequency receiving and transmitting channels, and the plurality of radio frequency receiving and transmitting channels are connected with the plurality of radiation sub-array units in a one-to-one correspondence manner; a first circuit in the correction circuit is used for realizing channel consistency correction among a plurality of radiation sub-array units in the radiation sub-array; and the second circuit is used for realizing channel consistency correction among the plurality of radiation sub-arrays, and finally realizing consistency correction of all channels. In the antenna provided by the invention, the channel consistency correction among the plurality of radiation sub-array units in the radiation sub-array is realized through the first circuit, the channel consistency correction among all the radiation sub-array units is realized through the second circuit, and the antenna has the advantages of simple circuit structure and relatively good channel correction consistency.

The present application discloses a signal transmission method, a signal receiving method, and a communication apparatus. The method includes a first device transmitting a first signal to a second device for a first frequency domain unit and transmitting a second signal for a second frequency domain unit. The first frequency domain unit includes a first frequency, and the second frequency unit includes a second frequency. The absolute value of the difference between the first frequency and the second frequency is associated with one or more of the following: a first bandwidth, a second bandwidth, or a third bandwidth. The first bandwidth is a bandwidth occupied by the first frequency domain unit in the frequency domain. The second bandwidth is a bandwidth occupied by the second frequency domain unit in the frequency domain. The third bandwidth is a bandwidth occupied by the third frequency domain unit in the frequency domain. The third frequency domain unit is used by the first device to transmit a third signal to a third device. The first signal, the second signal, and the third signal are in one operating band. In this way, interference can be suppressed without increasing the complexity of the radio frequency filters.

This specification presents a technical feature for increasing a transmission range of a wireless LAN signal. The wireless LAN signal of this specification, e.g., a transmission physical protocol data unit (PPDU), can be configured based on a replication transmission mode. The transmission PPDU of this specification can include replicated data units in frequency. The replicated data units in frequency can be configured based on a total bandwidth of the transmission PPDU. The transmission PPDU of this specification presents various training fields for the replicated data units.

The invention provides a diversity antenna-based frequency diversity and polarization diversity transmission system, which comprises a diversity antenna subsystem, a radio frequency feed network and a baseband processing unit, and is characterized in that the diversity antenna subsystem comprises a first diversity antenna, a second diversity antenna and a metal floor; the first diversity antenna and the second diversity antenna are at least dual-frequency antennas and are spatially orthogonally placed, the radio frequency feed network comprises a signal phase shifter, an equivalent phase shifter, a power divider and a signal amplification device, and frequency diversity and two-time polarization diversity can be realized. According to the frequency diversity and polarization diversity transmission system based on the diversity antenna provided by the invention, a complete radio frequency baseband architecture capable of simultaneously and actively realizing co-processing of polarization diversity and frequency diversity is constructed through collaborative innovation of the radio frequency front end and baseband processing.

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive an indication of a frequency offset for a secondary tone associated with data communications, the secondary tone associated with one or more of assisting the UE in filtering out noise or interference from data signaling associated with the data communications. The UE may receive the auxiliary tones and data communications including data signals at different frequencies that are based at least in part on a frequency offset of the auxiliary tones. Numerous other aspects are described.

The present disclosure relates to techniques for beamforming, in particular for WiFi communication schemes such as IEEE 802.11ax and 802.11be. In particular the disclosure relates to a beamformer device (110) configured to: transmit a request to a beamformee device (120), the request comprising a set of sounding tone indices, the set of sounding tone indices indicating tones for which a report (121) of beamforming information is requested from the beamformee device (120), wherein the tones are defined according to a first WiFi scheme, wherein the set of sounding tone indices is based on a first tone plan (400) defined by the first WiFi scheme for a partial channel bandwidth and on a second tone plan (200) defined by a second WiFi scheme for a full channel bandwidth. The disclosure further relates to a corresponding beamformee device.

The present application relates to the technical field of communications. Provided are an antenna and a communication device, which are used for solving the problem of poor consistency between radio frequency transceiver channels. The antenna provided in the present application comprises a feeding network, a calibration circuit and a plurality of radiating subarrays; each radiating subarray comprises at least one radiating subarray unit; the feeding network comprises a plurality of radio frequency transceiver channels; the plurality of radio frequency transceiver channels are correspondingly connected to the plurality of radiating subarray units on a one-to-one basis; each first circuit of the calibration circuit is used for implementing channel consistency calibration among the plurality of radiating subarray units of a radiating subarray, and a second circuit is used for implementing channel consistency calibration among the plurality of radiating subarrays, thus finally implementing overall channel consistency calibration. The antenna provided in the present application implements the channel consistency calibration among the plurality of radiating subarray units of the radiating subarrays by means of the first circuits, and implements the channel consistency calibration among all the radiating subarray units by means of the second circuit, thus having the advantages of simple circuit structure and good channel calibration consistency.

The present disclosure relates to a wireless communication system. The wireless communication system comprises a transmission device and a reception device. The transmission device is configured so as to implement processing for transmitting the same signal in parallel over a plurality of frequency channels. The reception device is configured so as to execute: processing for receiving the plurality of signals transmitted in parallel as a plurality of reception signals; processing for detecting degraded reception signals among the plurality of reception signals; and processing for synthesizing only the non-degraded reception signals.

This disclosure provides systems, methods and apparatuses for a selection of one or more transmission and reception points (TRPs) within a multi-TRP system. In one aspect, a user equipment (UE) may transmit an indication of the selected TRPs and an indication of one or more beams that the selected TRPs may use to communicate with the UE based on a mismatch between a default operating frequency (DOF) of each TRP within the multi-TRP system and a DOF of the UE. For example, the UE may receive an indication of a DOF of each antenna port of the TRPs within the multi-TRP system and the UE may compare the indicated DOFs with a DOF of each antenna module of the UE. The UE may select to communicate with TRPs and select one or more ports that the selected TRPs may use to communicate with the UE based on the comparison.

The present disclosure relates to a wireless communication system. The wireless communication system comprises a transmission device and a reception device. The transmission device is configured so as to implement processing for transmitting the same signal in parallel over a plurality of frequency channels. The reception device is configured so as to execute: processing for receiving the plurality of signals transmitted in parallel as a plurality of reception signals; processing for detecting degraded reception signals among the plurality of reception signals; and processing for synthesizing only the non-degraded reception signals. The plurality of frequency channels use the same polarization and mutually different frequencies.

A method for a user equipment (UE) to receive a physical downlink control channel (PDCCH) is provided. The UE receives configuration information for a first control resource set, the configuration information including the number of symbols in the time domain and the number of resource blocks (RBs) in the frequency domain, and determines the number N of first frequency-consecutive RBs. bundle Receives setting information indicating N bundle,1 The UE receives a PDCCH in a first control resource set in a frequency distribution block of a RB. bundle,1 It is assumed that the RBs have the same precoding. A method for configuring a search space to reduce the number of channel estimates that a UE performs to decode a PDCCH compared to a conventional search space is further provided.

The invention provides a configuration for replicating a transmitted data unit. The present specification proposes a technical feature for increasing the transmission range of a wireless LAN signal. A wireless LAN signal of the present specification, such as a transport physical protocol data unit (PPDU), may be configured on the basis of a copy transmission mode. A transmission PPDU of the present specification may include data units replicated in a frequency. The data units replicated in the frequency may be configured based on the total bandwidth at which the PPDU is transmitted. The Transport PPDU of this specification proposes various training fields for replicated data units.

Aspects of the subject disclosure may include, for example, performing a first analysis in respect of a first carrier, the first carrier operative in accordance with a frequency included in a frequency range from 24.25 GHz to 52.60 GHz, inclusive, determining, based on the performing of the first analysis, that a first user equipment (UE) is to be paired with at least one other UE as part of a multi-user multiple-input multiple-output (MU-MIMO) topology in the first carrier, resulting in a first determination, and subjecting the first UE to the MU-MIMO in the first carrier in accordance with the first determination. Other embodiments are disclosed.