118results about How to "Improve spectrum resource utilization" patented technology

The invention discloses a multicast system radio resource optimal distribution method based on an active antenna array model. The method comprises the steps as follows: performing cluster processing to a user based on position information of the user and video request information estimated in current time period; calculating a horizontal azimuth angle and a vertical elevation angle of the central position of each user group according to the user cluster result and position information of each user group; accurately aligning the user group with a base station antenna beam; using an antenna model of an active antenna array and determining a channel gain model from the base station to the user; providing a carrier resource distribution model based on the target of maximizing throughput capacity; providing a user group clustering algorithm, and performing clustering processing to the user group according to the position information of the user group. On the basis of carrier distribution algorithm of maximizing the throughput capacity, the method of the invention improves spectrum effectiveness, resource utilization rate, system capacity and user performance.

The invention provides a method and device for sharing dynamic spectrums. The method includes the steps that utilization information of a first spectrum of a coverage cell is determined by a base station, and the utilization information of the first spectrum comprises one or more of the following information: the access failure rate of the coverage cell, the calling intensity of the coverage cell, the expected bandwidth of the coverage cell, the idle bandwidth of the coverage cell, the bandwidth configuration information of the coverage cell and the edge user device information of the coverage cell. When the dynamic spectrums are shared in a homogeneous system with same network types, the base station sends the utilization information of the first spectrum to an adjacent base station, or when the dynamic spectrums are shared in a heterogeneous system with different network types, the base station sends the utilization information of the first spectrum to a core network, or the base station sends the utilization information of the first spectrum to a wireless resource management server. According to the method and device for sharing the dynamic spectrums, the purpose of sharing spectrum resources is achieved, and the utilization rate of the spectrum resources is improved.

The invention discloses an antenna device and an antenna array. The main content is that the antenna device includes three antenna oscillators fixed onto a supporting part, wherein a vertical distance between the radiation center of each antenna oscillator fixed onto the supporting part and a mirroring reflection ground plate is 1/5[lambda] to 2[lambda]; any two antenna oscillators fixed onto the supporting part mutually intersect at right angles; and an angle value of an included angle formed by a polarization direction and a horizontal direction of any different antenna oscillator is identical. Each antenna oscillator is connected with a feed network board through a core wire of a coaxial cable. The feed network board is used for independently adjusting amplitude and phase of a transceiving signal on each antenna oscillator. The three-polarization antenna device is applied to a communication network built by using MIMO technology, is convenient for address site selection and installation, and can help to improve the covering capability of network signals, raise broadband data service processing level and increase spectrum resource utilization rate.

The invention relates to a DMT (Discrete Multi-Tone)-based high-speed wire digital communication device. For aiming at providing a high-speed system which not only can improve the transmission speed of the current bus system, but also can be integrated with the original bus communication use, the invention adopts a technical scheme which is characterized in that a DMT-based transmission device of a high-speed 1553B communication bus comprises a parallel scrambling module, a RS (Reed-Solomon) coding module, a QAM (Quadrature Amplitude Modulatio) constellation labeling module, a block interleaver module, a pilot frequency insertion module, an IFFT (Inverse Fast Fourier Transform) module and a conjugate-symmetric transform module, a cyclic expansion module and a training symbol generating module which are serially connected in sequence by an FPGA (Field Programmable Gate Array). The DMT-based high-speed wire digital communication device is mainly applied to high-speed wire digital communication.

The invention proposes a low-orbit satellite short data communication channel agile distribution method, and designs an idle channel evaluation strategy based on the sampling power judgment; and meanwhile, prior measurement data of a target frequency band and the ground network frequency distribution condition are fully considered, the idle degrees of alternative channels are sorted, and channel agile distribution and switching are carried out on low-orbit satellites. Compared with a traditional channel fixed distribution and access method, the low-orbit satellite short data communication channel agile distribution method provided by the invention improves the spectrum application efficiency of the satellite short data communication, effectively avoids the interference of a system itself and the interference to other systems, and solves the problem of scarcity of frequency resources; and the low-orbit satellite short data communication channel agile distribution method can effectivelyrealize multi-system compatibility under limited spectrum resources, improve the anti-interference performance and frequency use efficiency of a satellite communication system, and has the characteristics of being simple in process, high in flexibility and high in feasibility.

The invention discloses a spectrum resource assignment method, which comprises the following steps of: classifying a network service, correspondingly blocking a spectrum space, determining corresponding relationships between network service classes and spectrum blocks, and when spectrum resources are required to be assigned to the network service, determining the network service class of the network service; determining a spectrum block corresponding to the network service class according to the corresponding relationships between the network service classes and the spectrum blocks; and assigning spectrum resources in the spectrum block to the network service. The invention correspondingly discloses a spectrum resource assignment device. The spectrum resources are assigned on the basis of the network service class; and for different network scenarios, different spectrum resource assignment methods can be instantiated, the spectrum space is correspondingly blocked, services of the same class are assigned to the same spectrum block, and then the spectrum space released by the services of the same class can be well utilized by subsequent services, so that spectrum fragments can be reduced, and the utilization rate of the spectrum resources can be increased.

The invention discloses a multiuser-oriented relay satellite space-time frequency domain resource dynamic scheduling method. The method comprises the following steps: I, receiving different paths of user data streams; II, calculating weight values of the paths of user data streams; and III, allocating time-domain resource blocks to the user data streams according to the weight values. Through adoption of the multiuser-oriented relay satellite space-time frequency domain resource dynamic scheduling method, comprehensive consideration is given to the factors of task priority, time delay requirement, packet loss rate, throughput and application time sequence, and reasonable satellite resources are allocated to a plurality of users on a space-time domain. Specific to a relay satellite control and management center, the spectrum utilization rate and network throughput of relay satellite resources are increased. From the aspect of the users, the service quality of different services of the users is ensured, and the user demands are met.

The invention provides a design method of an optimal pilot frequency pattern suitable for rapid time-varying sparse estimation. The method is specifically characterized in that more and more testing experiments indicate that wireless channels have sparsity, and the design of the pilot frequency pattern at present is mainly based on a dense multipath conventional channel estimation method, a large number of pilot frequency signals are needed for obtaining accurate channel state information, and the utilization of frequency spectrum resources is low; in addition, the existing sparse channel estimating methods are mostly suitable for slow time-varying or time-invariant channels, the utilization of the channel sparsity is only limited to a time delay domain instead of a Doppler domain, and the influences of intercarrier interference generated by Doppler frequency shift on the channels can be neglected, so that the precision and reliability of the sparse channel estimation method used in the rapid time-varying channel are greatly lowered. Based on the above conditions, the invention provides the design method of the optimal pilot frequency pattern suitable for rapid time-varying sparse estimation, and the provided method is better in robustness and higher in channel estimation precision.

The invention discloses a collaborative edge caching algorithm for delay optimization in an ultra-dense network. The collaborative edge caching algorithm comprises the following specific steps: 1, setting each parameter of a system model; 2, making an optimal cache decision for each SBS by adopting a multi-agent reinforcement learning algorithm based on the game theory so as to maximize the content cache hit rate of each SBS; 3, making an optimal bandwidth resource allocation decision for each SBS by adopting an improved branch and bound method so as to minimize the total content downloading delay of all user equipment. According to the method, the content downloading delay of all users in the ultra-dense network can be effectively reduced, the content cache hit rate and the spectrum resource utilization rate are improved, and the algorithm has good robustness and expandability and is suitable for the large-scale user-intensive ultra-dense network.

The invention provides a cooperative control method for transmitting power of a gateway and terminals in a hierarchical M2M network, and relates to the field of wireless communications. The cooperative control method for the transmitting power of the gateway and the terminals is realized by establishing a wireless communication link by employing full duplex relay transmission, obtaining channel state parameters (the expression is shown as in the description) and (the expression is shown as in the description) of a wireless M2M gateway, calculating a channel gain in the network after obtaining the channel state parameters (the expression is shown as in the description) and (the expression is shown as in the description) of wireless M2M terminals, and calculating a transmitting power control parameter in the case that the data throughput of each wireless M2M terminal is satisfied. Proportions of signal power to interference noise power, namely, signal to interference plus noise ratios from the terminal to a gateway link and from the gateway to a base station link are effectively improved, so that the energy consumption of the M2M terminals is minimized, the minimum time delay requirements of M2M communication are satisfied, and the utilization rate of spectrum resources of a cellular network is effectively improved.

The related flexible FDM method on directional antenna mode comprises: the RNC divides every sector into the main carrier and sub-carrier and determines the maximal emission power for sector according to business quantity; the BS determines the emission power for carriers, and communicates with user based on relative sub-carrier. This invention has well expansion, improves frequency source utility, and adjusts conveniently.

The present disclosure provides an electronic device and method for wireless communication, and a computer readable storage medium. The electronic device comprising: a processing circuit configured to: generate an indication indicating whether to allow sharing of a channel occupancy time of the user equipment with other user equipment in a case where a user equipment successfully accesses an unlicensed frequency band; and transmit the indication to a base station or other user equipment.

An embodiment of the invention provides a carrier aggregation method, device and system. The method comprises: a first object determines a non-main carrier cell of CA; the first object is used for controlling a main carrier cell of CA, wherein the main carrier cell is a cell of a first duplex mode, the non-main carrier cell is a cell of a second duplex mode, and the first duplex mode is different to the second duplex mode; the first object interacts a first data with UE, and interacts a second data with UE by a second object; and the second object is used for controlling the non-main carrier cell of CA. The embodiment of the invention provides a solution scheme of carrier CA, and a throughput rate and a frequency spectrum resource use ratio are raised.

The invention discloses a combined type dynamic spectrum distribution method in a heterogeneous network convergence scene. The combined type dynamic spectrum distribution method in the heterogeneous network convergence scene specifically comprises the following steps of: (1) collecting a spectrum resource of each wireless communication network to form a vector spectrum resource library; (2) establishing a combined type dynamic spectrum distribution universal model for the vector spectrum resource library according to a spectrum distribution optimizing strategy of firstly optimizing inter-network spectrum distribution and then performing secondary optimization on inner-network spectrum after the inter-network spectrum distribution is optimized; (3) obtaining a combined type dynamic spectrum distribution model by using an artificial intelligence method. The combined type dynamic spectrum distribution method in the heterogeneous network convergence scene gives consideration to collaborative distribution optimization problem of spectrum resources among networks and in the networks in the aspect of improving the spectrum resource utilization rate of a whole heterogeneous network system, provides powerful support for development of green communication and can find an optimal spectrum optimal distribution scheme.

Embodiments of the invention disclose a method for enhancing a demodulation reference signal and related equipment. The method comprises the following steps: a base station can send DMRS configuration information to M UE, DMRSs reported by the M UE according to DMRSs are received, and channel estimation is performed respectively aiming at the DMRSs reported by the various UE, wherein the M UE comprises the N first target UE performing uplink data transmission in an MU-MIMO mode, and at least two first target UE having partially overlapped occupied bandwidths exist in the N first target UE. The base station can receive a plurality of MU-MIMO users having the partially overlapped occupied bandwidths, DMRSs are reported at the same time, and then the channel estimation is performed according to the DMRSs, so the number of users simultaneously sending the DMRSs can be increased, and the frequency spectrum resource utilization rate of a system can be improved.

The invention relates to a spectral efficiency-priority anycast routing resource reconfiguration method based on an elastic optical network. According to an anycast request, multiple blocking rate optimal optical paths for the anycast are calculated, a first-fit method is used for distributing optical path spectrum blocks, and the blocking rate optimal optical paths are ranked according to a spectral efficiency priority criterion; then, whether an optical path destination node with the highest blocking rate optimal frequency efficiency of the anycast is a non-renewable energy power supply data center is judged, if yes, the blocking rate optimal optical path is preserved for the anycast request, an energy consumption optimal optical path with the second highest spectral efficiency connected with a renewable energy power supply data center is calculated for the anycast request, and a last-fit spectrum distribution mode is used for distributing spectrum blocks, and if not, spectrum distribution conflict is judged to happen between the optical path and energy consumption optimal optical paths of other anycasts, the conflicted anycast energy consumption optimal optical path is reconfigured to the preserved blocking rate optmial optical path for transmission, and while the low blocking rate for the anycast service is ensured, the purpose of energy-saving anycast transmission can be achieved.

The invention provides a method for detecting the interference of an OFDM communication system, belonging to the technical field of communication technology. The method comprises the following steps of: setting an interference detecting threshold by extracting sonband data with minimum error rate on the basis of the statistics of a sonband error rate; intercepting and receiving adjoining Q frames in the data; and comparing data which is obtained by adding and averaging corresponding frequency points after sectioning, windowing and /FFT/ with an interference detecting threshold TH to finally obtain an interference detecting result. The method belongs to a self-adapting blind interference detecting method. The method has the characteristics of high detection accuracy and low omission ratio, does not need to estimate information channel, reduces the complexity of a whole OFDM communication system, and can set the interference detecting threshold without a pilot frequency signal, thereby improving the use ratio of frequency spectrum resource of the OFDM communication system.

The invention discloses an anti-eavesdrop and anti-interference spectrum access method based on bandwidth and power distribution. According to the method, in order to prevent an eavesdropper from eavesdropping information of a main user, a sending end of a main system sends artificial noise through a part of power and sends signals through remaining power, and meanwhile a receiving end of the main system sends artificial noise so that so that a sending end of a secondary user cannot be influenced by the artificial noise when receiving the signals of the main system; if the main system can reach a target safety rate with the help of a secondary system, the secondary system is allowed to conduct spectrum access; after the secondary system conducts spectrum access, a part of bandwidth is used for helping the main system forward information so that the main system can reach the target safety rate, and the remaining bandwidth is used for sending the information of the main user. By means of the method, mutual interference between the main user and the secondary user is effectively eliminated, and safe transmission of the information of the main user is ensured.

The invention relates to a 5G multi-system coexistence resource allocation method under an unlicensed spectrum based on Q learning, and belongs to the technical field of spectrum allocation in wireless communication. The method comprises the following steps: step 1, calculating throughputs of an NR-U system and a WiFi system in a coexistence scene, and respectively determining demands of the NR-Usystem and the WiFi system for spectrum resources; 2, calculating the optimal ABS number in the coexistence scene, specifically, determining a target function of the optimal ABS number in the coexistence scene; traversing the q values in sequence so as to find the q value meeting the optimization target, and calculating the number of the ABS according to the calculated q value: NABS = (1-q)T, wherein T is the length of one radio frame in the 5G NR system; 3, matching the ABS position in the coexistence scene, and realizing the matching of the WiFi system and the ABS position by using Q learning. According to the method, the total throughput of the heterogeneous network system is effectively improved while the fairness of the system is ensured; and the spectrum resource utilization rate ofthe coexistence system is effectively improved.

The invention discloses a data selection-based frequency spectrum sensing method used under a pulse interference environment, which comprises the steps as follows: firstly, an antenna in a cognitive radio system repeatedly executes time-domain sampling aiming at a signal in a monitoring channel; secondly, an absolute value discrete value of the signal of each time domain sampling point is computed, and each discrete value in a first absolute value discrete value sequence formed by all discrete values is compared with the average value of all the discrete values, when two or more than two continuous discrete values in the first absolute value discrete value sequence are large than the average value of the discrete values by three times, and the discrete values with interference pulse are removed; thirdly, the inspection statistical quantity of a second absolute value discrete value sequence formed by all discrete values without pulse interference is computed; and lastly, the sizes of the inspection statistical quantity and a decision threshold are compared, and whether the monitoring channel is idle or not is judged according to a comparison result. The method disclosed by the invention effectively solves a problem that the false alarm probability is increased owing to existing pulse interference, and improves the utilization ratio of frequency spectrum resources.