334 results about "Spectral efficiency" patented technology

The invention provides a wireless resource scheduling method and device used in a scene in which a mobile phone is directly connected with a satellite, and relates to the technical field of satellite communication, and the method comprises the steps: constructing an electromagnetic map which represents the corresponding relation of a geographic position, a physical resource block and ground interference power in a satellite beam coverage area; link budgeting is carried out on the multiple user terminals in combination with the real-time orbit geometric parameters of the satellite and the electromagnetic map, and the signal to interference plus noise ratio of each user terminal on each physical resource block is predicted; based on the predicted signal to interference plus noise ratio, adopting a proportional fair marginal gain greedy algorithm to allocate an optimal continuous spectrum resource block for each user terminal; on the allocated spectrum resources, optimizing and reallocating the total transmitting power of the satellites by adopting a water injection algorithm; and a final spectrum-power joint scheduling scheme is generated, and subsequent link self-adaption and data transmission are guided. According to the invention, the spectrum efficiency, throughput and connection stability of the system are obviously improved.

Methods, systems, and devices for wireless communications are described. A wireless device may perform a probabilistic shaping procedure using a shaping rate that is selected in accordance with a rule associated with a target spectral efficiency value, a modulation order, or both. Similarly, the wireless device may perform a channel coding procedure whose coding rate is selected in accordance with the rule. The rule may correspond to a relationship between the coding rate and the shaping rate. In some cases, the wireless device may select the shaping rate and the coding rate to be predefined values based on a target spectral efficiency value. In some examples, the wireless device may select the shaping rate and the coding rate based on a threshold coding rate, a quantity of punctured nodes used in the channel coding procedure, a quantity of layers corresponding to a multi-layer transmission, or any combination thereof.

Procedures, methods, architectures, apparatuses, systems, devices, and computer program products for near-field (NF) region detection. It may be beneficial if a wireless transmit-receive unit (WTRU) and the network are aware of whether the WTRU is within a NF region or not. A WTRU may be configured with a primary (P-RS) and a secondary (S-RS) set of resources. The WTRU performs measurements on each pair of associated RS resources selected from the P-RS and S-RS resource sets. Based on measurement results, the WTRU selects one or more RS groups that include a S-RS and an associated P-RS, and determines whether a pre-defined measurement condition is fulfilled. Based on the determined state for the selected RS groups, the WTRU determines to report an NF detection to the network, such as to enable location division multiple access and beam focusing which may enable enhanced spectrum efficiency.

The invention discloses a nonlinear hybrid beam forming method and system in unmanned aerial vehicle communication and a storage medium. The method comprises the following steps: calculating a constraint condition of a hybrid precoding matrix of a transmitting end; constructing a target function of an analog precoding matrix of the transmitting end according to constraint conditions of the hybrid precoding matrix of the transmitting end and requirements of an optimal precoder; the optimal gradient iteration step number is calculated according to the relation between the historical gradient information and the time delay / or the spectrum efficiency and / or the energy efficiency; calculating an optimal solution of a transmitting end simulation precoding matrix objective function according to the optimal gradient iteration step number; obtaining a transmitting end hybrid precoding matrix according to the optimal solution of the transmitting end analog precoding matrix objective function; and performing hybrid beam forming according to the hybrid precoding matrix of the transmitting end. The method solves the problem that the loading capacity requirement and the real-time requirement of unmanned aerial vehicle communication cannot be met due to the fact that an existing millimeter wave hybrid beam forming technology is insufficient in spectrum efficiency, high in time delay and low in energy efficiency.

Aspects of the subject disclosure may include, for example, determining a topology of a network, wherein the network includes a plurality of network elements (NEs) and at least one optical network-based fronthaul, at least one optical network-based midhaul, or combination thereof, for one or more routes associated with one or more of the plurality of NEs identified based on the topology, applying one or more sets of parameters for that route, obtaining data relating to the network based on the applying the one or more sets of parameters, training one or more AI models using the data, resulting in one or more trained AI models, and utilizing the one or more trained AI models to generate one or more predictions regarding spectral efficiency relating to the at least one optical network based fronthaul, the at least one optical network-based midhaul, or the combination thereof. Other embodiments are disclosed.

Enhanced protocols and devices may be used to alleviate loss of spectrum efficiency in wideband transmission. The protocols may implement a wideband transmission opportunity (TXOP) truncation where one or more of the channels involved in communication over the wideband are released. In one scenario, an access point (AP) may receive, from a wireless transmit receive unit (WTRU), a first CF-End frame that includes a duration field and a basic service set identifier (BSSID) field that includes an individual / group bit. On a condition that the individual / group bit of the BSSID field has a value of one (1), the AP may determine that a scrambling sequence of the first CF-End frame indicates a bandwidth associated with a transmit opportunity (TXOP) being truncated by the WTRU. The AP may then transmit a second CF-End frame at the bandwidth indicated by the scrambling sequence of the first CF-End frame.

A data processing method and apparatus are disclosed, which may be applied to communication systems such as 5G and 6G. The method includes: obtaining an extended first codebook based on a second codebook by increasing a quantity of codewords or lengths of codewords, and performing first network coding or decoding based on the first codebook. Linear independence between codewords in the extended first codebook may be ensured as much as possible, so as to generate more valid redundant packets or check packets, thereby improving system reliability. Alternatively, flexible block lengths are supported, so as to perform efficient network coding or decoding on more original data packets, thereby improving system spectral efficiency. This application may be applied to an extended reality XR service or another low-delay service.

The application is suitable for the field of wireless communication technology, and provides a cross-band tomographic model guided environment knowledge base construction and utilization method and device, a wireless communication system and a storage medium, which comprises the following steps: a wireless distributed node performs periodic beam scanning, and records wireless measurement data of multiple frequency bands to the local based on data acquisition signals of a wireless base station; the wireless distributed node generates wireless propagation channel multipath parameters based on the wireless measurement data, combines position and attitude to acquire local environment knowledge data and feeds back to the wireless base station; the wireless base station receives and stores the local environment knowledge data, combines multi-sensor data to construct a cross-band tomographic model guided environment knowledge base; and the wireless base station assists the wireless communication process between the wireless base station and the wireless distributed node based on the environment knowledge base. According to the application, the cross-band tomographic model guided environment knowledge base is used by the wireless distributed node to realize multi-node beam tracking, which can reduce beam overhead and improve communication spectrum efficiency.

The invention belongs to the field of wireless communication, and particularly relates to a wireless signal multi-dimensional array coding method and system based on dynamic rank optimization. The method comprises the following steps: detecting state information of a wireless channel, predicting state change of the channel by using a pre-trained deep learning model, and generating a dynamic optimization multiplier; adjusting a preset static optimization multiplier by using the dynamic optimization multiplier, constructing a target function for jointly optimizing the energy efficiency and the spectrum efficiency, and determining an optimal transmission rank by solving the target function; comparing the optimal transmission rank with the current transmission rank to determine a rank-up or rank-down operation; and reconstructing a transmission signal of the wireless channel according to a result of the rank increasing or decreasing operation. According to the method, the optimization target is dynamically adjusted by predicting the channel change, and the asymmetric ascending and descending rank algorithm is adopted, so that the adaptive transmission rank optimization in a complex time-varying channel environment is realized, and the communication performance is remarkably improved.

Various embodiments comprise a wireless communication network configured to estimate wireless downlink speed. In some examples, the wireless communication network comprises data analysis circuitry. The data analysis circuitry receives a measurement report indicating received signal strength associated with a geographic location and a radio band. The data analysis circuitry converts the received signal strength for the radio band to a spectral efficiency for the radio band. The data analysis circuitry determines bandwidth for the radio band. The data analysis circuitry determines a spectral efficiency ratio for the radio band based on loading for the radio band and the geographic location. The data analysis circuitry estimates a downlink speed for the geographic location and the radio band based on the spectral efficiency ratio, the spectral efficiency, and the bandwidth.

The invention discloses an unmanned aerial vehicle ad hoc network identification and multi-hop relay method and system based on dynamic optimization of an HCAR. According to the method, a dynamic network topology is constructed and maintained through periodic beacon interaction between nodes; after a target unmanned aerial vehicle identification signal is received, evaluating the direct link quality with a ground control center, and if the direct link quality is lower than a threshold value, starting a multi-hop relay; the optimal next-hop node and the communication channel are jointly selected according to the real-time topology and the channel state through the HCAR algorithm, and data are forwarded to a ground control center hop by hop. According to the invention, through the dynamic collaborative optimization of the routing and the channel, the transmission stability and the spectrum efficiency in a high-density scene are improved; link interruption rapid detection and self-healing capabilities are provided, and data transmission continuity is guaranteed; energy state monitoring and dynamic deployment are combined, and outdoor long-term reliable operation is supported.

This invention relates to the field of wireless communication network optimization technology, specifically a three-dimensional communication coverage method that jointly optimizes the downtilt angle of ground base stations and the deployment location of airborne base stations. Based on an integrated air-ground network, this method designs a two-layer optimization architecture for network optimization. By handling the location selection of airborne base stations and the adjustment of antenna tilt angles of ground base stations separately, it avoids strong coupling between discrete and continuous variables, thereby preventing superlinear expansion of the solution space. Simultaneously, by introducing SPSA simulated gradient technology and the ZO-Adam optimization algorithm, it overcomes the non-smoothness and non-convexity problems of the system's spectral efficiency function, ensuring the stability and convergence of the optimization process. Furthermore, the two-layer optimization architecture effectively alleviates the path dependency problem of greedy algorithms, achieving a balance between global search and timeliness.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. Apparatuses and methods for latency reduction for transmission of data. A method performed by a user equipment (UE) includes receiving, by radio resource control signaling, first information for a configured grant (CG) configuration for transmission of physical uplink shared channels (PUSCHs), wherein the first information includes a time period; determining first transmission occasions (TOs), from a first set of TOs within the time period, for transmission of respective first CG-PUSCHs; and determining first control information providing an indication of the first TOs. The method further includes multiplexing the first control information in a first CG-PUSCH from the first CG-PUSCHs, and second control information in a PUSCH other than the first CG-PUSCH, and transmitting the first CG-PUSCH and the PUSCH. The second control information provides first acknowledgement information or channel state information. The transmission of the first CG-PUSCH overlaps in time with the transmission of the PUSCH.

The invention discloses a signal layered transmission method and device, electronic equipment and a storage medium, and is used for solving the technical problems that an MR-M-DCSK system based on a two-dimensional star map has no dimension gain, and is relatively low in spectrum efficiency and relatively low in dynamic adjustment flexibility. Comprising the following steps: converting a high-priority layer data stream into a first bit sequence, and converting a low-priority layer data stream into a second bit sequence; inputting the first bit sequence and the second bit sequence into a three-dimensional constellation-based M-DCSK layered modulator, and outputting a modulation signal; converting the modulation signal into a receiver input signal through a multipath Rayleigh fading channel; the M-DCSK layered demodulator based on the three-dimensional constellation demodulates an input signal of the receiver into a high-priority demodulated output data stream and a low-priority demodulated output data stream; the high priority demodulation output data stream is converted into a high priority layer decoding bit stream, and the low priority demodulation output data stream is converted into a low priority layer decoding bit stream.

The application relates to the technical field of communication, and discloses an AI-based 5G active MIMO beamforming intelligent optimization method.The method comprises the following steps: acquiring real-time radio frequency amplitude and phase data of each antenna unit; inverting downlink channel state information; collecting obstacle distribution information; combining a benchmark model to generate an antenna health state confidence score; fusing multi-source information to construct a feature tensor; inputting a deep reinforcement learning network, taking edge throughput and main lobe precision as optimization objectives, and outputting a complex weighting coefficient; and reconstructing a beamforming matrix according to the complex weighting coefficient.The application realizes dynamic adaptive optimization of beams under abnormal working conditions, and improves link robustness and spectral efficiency.

Relay-aided intelligent reconfigurable surfaces (IRSs) are provided. A novel relay-aided intelligent surface architecture is described herein that has the potential of achieving the promising gains of IRSs with a much smaller number of elements, opening the door for realizing these surfaces in practice. A half-duplex or full-duplex relay is connected to one or more IRSs. This merges the gains of relays and reconfigurable surfaces and splits the required signal-to-noise ratio (SNR) gain between them. This architecture can then significantly reduce the required number of reconfigurable elements in the IRS(s) while achieving the same spectral efficiencies. Consequently, the proposed relay-aided intelligent surface architecture needs far less channel estimation / beam training overhead and provides enhanced robustness compared to traditional IRS solutions.

Mitigation of interference between terrestrial networks (TN) and non-terrestrial networks (NTN) in integrated communication systems may be achieved by reducing the interference at both networks such that co-channel inter-system interference may be minimized and spectral efficiency may be improved. Additionally, by improving spectrum sharing between TN and NTN, higher throughput may be achieved and user coverage may be expanded. By integrating a directional interference adjustment factor (DIAF) into a power control mechanism, a system can make more informed and precise adjustments to its transmit power. By considering the DIAF, the system may dynamically adjust power to, thereby, minimize interference with other networks or users. Minimization of interference is especially convenient in environments where multiple networks share the same spectrum. Adjusting power based on the DIAF helps maintain a better signal to interference and noise ratio, leading to more reliable communication and better data rates.

This application provides a communication method and apparatus that can improve spectrum efficiency. The method includes: receiving first information, the first information indicating L in a first polarization among M ports. R There are 1 port, M is an integer greater than 1, and L is a port. R The value is a positive integer; the first channel state information (CSI) is transmitted, which corresponds to L ports on the first polarization out of M ports. The L ports include L... R There are 1 port, where L is greater than or equal to L. R .

The application provides a communication method and a communication device. The method comprises: a first communication device receiving configuration information, the configuration information being used for updating first information associated with the first communication device; and sending feedback information, the feedback information being used for indicating channel information associated with the first communication device, the channel information being determined based on the first information associated with the first communication device, and the channel information being used for data transmission. Therefore, the DMRS used for assisting in receiving data can be omitted, resource overhead caused by sending the DMRS used for demodulating data of each communication device and time delay caused by processing the DMRS are reduced, the channel information can be obtained based on the updated first information associated with the terminal device, the accuracy of obtaining the channel information is ensured, and the system spectral efficiency is improved.

Coordinated multi-AP transmission improves spectral efficiency and reduces latency. APs may need to know the buffer / traffic status of other APs in order to cooperate with them. Several embodiments disclosed provide buffered status reports between multiple APs. Furthermore, the disclosed embodiments provide a UORA mechanism for low-latency traffic transmission using RA-RU.

The invention discloses a cognitive radio network spectrum efficiency optimization system and method based on a clamped antenna, belongs to the technical field of wireless communication, and solves the problems that in a downlink cognitive radio network, a primary network and a secondary network share the same frequency band, so that serious same-frequency interference exists between a primary user and a secondary user, and the service life of the primary user is influenced. The problem that a traditional fixed antenna array cannot simultaneously realize the maximized coherent gain of an expected user and the interference suppression of an interference user is solved. The method comprises the following steps: constructing a cognitive radio network model; constructing an optimization problem with maximization of the sum of the spectrum efficiencies of the primary user and the secondary user as a target; optimizing the antenna clamping position of the main network; the antenna clamping position of the secondary network is optimized, specifically, coarse-scale position optimization is executed to determine the initial position, and then fine-scale position optimization is executed to adjust the phase; and configuring the cognitive radio network based on the optimized antenna clamping position to improve the total spectrum efficiency. The method is suitable for the spectrum efficiency optimization scene of the cognitive radio system.

Techniques and apparatuses are described for multiple-input multiple-output transmissions using adaptive phase-changing devices. In aspects, a base station selects one or more adaptive phase-changing devices, APDs, to use in at least one communication path for multiple-input, multiple-output, MIMO, transmissions. The base station can perform a channel characterization process for the at least one communication path using the at least one APD and at least one UE. Based on results of the channel characterization process, the base station configures the at least one APD by which to implement single user-MIMO communication with a UE or multiple user-MIMO communication with multiple UEs. By so doing, the base station may implement MIMO transmissions using APDs to communicate with the at least one UE using same time and frequency resources, which can improve spectral efficiency of a wireless network.

The invention provides an RIS-assisted MISO system discrete phase shift optimization method based on a DYYPO algorithm, and the method comprises the steps: constructing an RIS-assisted MISO communication system model, and carrying out the modeling of RIS passive beam forming into a high-dimensional discrete optimization problem; the fixed base station performs active beam forming, and the optimization problem is simplified into a single-target optimization problem with the maximum spectrum efficiency as the target; initializing a DYYPO algorithm, generating a development point and an exploration point, and setting algorithm parameters; a splitting stage is executed, local one-way splitting is carried out on the development points in parallel, and global multi-way splitting is carried out on the exploration points; executing an archiving stage, and periodically updating search points by adopting a double-elitist retention strategy; in the execution parameter updating stage, the development and exploration probability is dynamically adjusted to achieve self-adaptive convergence; and finally, outputting an optimal discrete phase shift vector as an RIS configuration scheme. According to the method, the problem of high-dimensional discrete phase shift optimization is solved, the method has the advantages of high global search capability and high convergence speed, and the spectrum efficiency of the system is remarkably improved.

Systems, methods, apparatuses, and computer program products for energy-efficient precoding with controllable power distribution. A method may include generating a digital precoder with controllable flatness based on at least one of a plurality of control parameters. The method may also include controlling flatness of a power distribution across a set of antennas, panels, or access points. The method may further include balancing, based on the control of the flatness of the power distribution, spectral efficiency and energy efficiency according to respective predefined values of spectral efficiency and energy efficiency. The balancing may include adjusting the at least one of the plurality of control parameters.

The invention relates to the technical field of information security, and discloses a multi-point recording interference method and system, and the method comprises the steps: obtaining environment information, and determining a basic interference volume according to the environment information; acquiring a sound source-node distance vector and sound field uniformity, and converting the sound source-node distance vector and the sound field uniformity into a spatial distribution coefficient; acquiring a voice initial instantaneous slope and an interference-voice cross-correlation function peak value, and converting the slope and the peak value into a dynamic response coefficient; receiving a target voice, obtaining the spectral characteristics and the voice spectrum centroid of the target voice, and converting the spectral characteristics and the voice spectrum centroid into a spectral efficiency coefficient; reading the basic interference volume, the spatial distribution coefficient, the dynamic response coefficient and the spectral efficiency coefficient, and generating an adjustment instruction; according to the invention, through collaborative analysis of the environment reference coefficient, the spatial distribution coefficient, the dynamic response coefficient and the spectrum efficiency coefficient, multi-dimensional adaptive matching of the interference volume and the environment state, the spatial layout, the voice dynamic characteristic and the spectrum characteristic is realized, and the flexibility is extremely high.

The invention discloses a data processing method, a communication node, a medium and a program product. Comprising the steps of obtaining a first bit sequence; wherein the first bit sequence comprises at least one of a filling bit sequence, an amplitude bit sub-sequence and a non-amplitude bit sequence; determining a check bit sequence according to the first bit sequence; determining a system bit punching number according to at least one of the length of the filling bit sequence, the length of the amplitude bit sub-sequence and the length of the non-amplitude bit sequence; determining a first coding bit sequence according to the first bit sequence, the check bit sequence and the system bit punching number; and determining a second coding sequence according to the first coding bit sequence. According to the invention, a method for determining the number of system bit punctures is provided, so that coding based on the number of system bit punctures can fully contain and write information in the amplitude bit sub-sequence corresponding to the input bit sequence, coding for fully retaining effective information in the bit sequence is realized, and the spectrum efficiency is improved.

The invention discloses a satellite communication antenna system and method for adaptive beam forming, and relates to the technical field of communication, and the system comprises a dynamic reconfigurable sub-array, a high-speed interconnection bus, a central digital beam forming processor and a beam health monitoring module. The method comprises the following steps: constructing a hybrid beam forming architecture in which a dynamic reconfigurable sub-array and a central processing unit cooperate; sensing a channel state and an interference direction in real time, and generating a composite channel state matrix; calculating and decomposing a global optimal beam weight based on a constraint minimum variance or maximum signal to interference plus noise ratio criterion; an adjustable phase shifter and an attenuator in the driving subarray realize millisecond-level beam pointing reconstruction and null generation; and executing multi-subarray collaborative synthesis and dynamic power distribution. According to the invention, closed-loop adaptive beam optimization can be realized, the power consumption and the hardware complexity are obviously reduced, the spectrum efficiency and the beam precision are improved, and the system robustness is enhanced at the same time.

Methods, systems, and devices for method for wireless communication are described. A user equipment (UE) may measure a channel state information reference signal using a candidate UE beam from a set of candidate UE beams. In some cases, the measuring may indicate a spectral efficiency associated with the candidate UE beam. The UE may then transmit a measurement report indicating an effective reference signal received power associated with the candidate UE beam. The effective reference signal received power may be based on the spectral efficiency associated with the candidate UE beam.

The invention relates to the cross technical field of wireless communication and intelligent agriculture, in particular to a NOMA-SIC uplink weighting and rate maximization method based on an unmanned aerial vehicle (RIS), and the method comprises the steps: constructing an uplink system composed of a fusion center, an unmanned aerial vehicle reconfigurable intelligent surface and a sensor node, and enabling the fusion center to employ a continuous interference elimination technology, and realizing multi-user concurrent transmission based on power domain multiplexing of non-orthogonal multiple access. According to the method, fractional programming, quadratic transformation and successive convex approximation technologies are jointly used, phase configuration of the RIS and sensor transmitting power are alternately optimized, beam forming vectors are received by a fusion center, and under the condition that the power, phase and service quality constraint conditions are met, the system weighting sum rate is maximized. The advantages of NOMA spectrum multiplexing and SIC interference elimination are brought into full play, the transmission reliability and the spectrum efficiency are remarkably improved, and the method is suitable for low-delay and high-reliability acquisition of intelligent agricultural large-scale sensor data and can be expanded to the scenes of industrial Internet of Things, emergency communication and the like.