58results about How to "Guaranteed Spectral Efficiency" patented technology

The invention discloses a method for mapping resources of a control channel in a communication system. The method comprises the following steps of: differing a process of mapping resources of a subframe of a broadcast control channel from a process of mapping resources of a subframe of a non-broadcast control channel; and instructing the process of mapping resources of the subframe of the non-broadcast control channel through control information in the broadcast control channel. The technical scheme solves the problems of occupying resource positions by a synchronization channel and the broadcast control channel and modes, simplifies the process that a terminal identifies the broadcast control channel and ensures frequency spectrum efficiency of a wireless communication system based on OFDMA technology through the design scheme of the control channel.

The invention provides a frequency layout method based on cooperating with multi-point single user multi-input and multi-output which includes steps as follows: averaging a frequency segment occupied by the subdistrict by using CoMP transmitting into three equal parts: three sectors occupy one third of the subdistrict frequency segment orderly; then dividing each sector frequence band into a CoMPSector Zone frequency band for providing service to CoMP user, and residual frequency band services the non-CoMP user by a method of using a frequency reuse factor; selecting CoMP mode participated by a virtual subdistrict according with a user transmitting ratio requirement, then distributing CoMP sector Zone frequency band size according with the transmitting requirement ratio of CoMP user and non-CoMP user, finally deciding whether adjusting or transfering to CoMP Sector Zone frequency band size or CoMP mode real time according with the measurement and feedback of the user chunnel quality. The method can reduce calculating complex degree and information alternation amount to the network carried by CoMP, ensure frequency spectrum of the whole edge user and the whole system, and increase system chunnel capacity.

The invention discloses a method for distributing radio resources, which comprises the steps: a dispatching party selects an expanding mode for expanding basic resource blocks or a splitting mode for splitting the basic resource blocks according to predetermined factors; the dispatching party splits the basic resource blocks to obtain splitting resource blocks or expands the basic resource blocksto obtain expanding resource blocks according to the selected splitting mode or the selected expanding mode; the dispatching party dispatches the expanding resource blocks or the splitting resource blocks to a dispatched party and indicates the selected splitting mode or the selected expanding mode to the dispatched party in a predetermined mode; and the dispatching party uses the basic resource blocks, the expanding resource blocks and the splitting resource blocks or the combination of the blocks to carry out resource distributing description and transmits resource distributing description information to the dispatched party. The invention can increase the dispatching efficiency of the radio resources and ensure different service types of QoS and the spectrum efficiency of a prospectivewireless communication system.

The invention discloses an energy efficiency optimization method based on a full-duplex bidirectional relay D2D network. The method comprises a cellular user, a pair of full-duplex D2D users multiplexing the frequency band of the cellular user, and one full-duplex bidirectional relay user assisting with D2D communication. By use of a double-layer alternative iteration optimization algorithm, the transmission power of the cellular user and the full-duplex D2D users and the amplification gain of the full-duplex bidirectional relay user can be dynamically adjusted, the influences exerted by interference between the users and self-interference of the full-duplex users on network performance are effectively alleviated, and the energy efficiency of a system can be maximized under the constraints of minimum frequency spectrum efficiency. During communication of the cellular user, the full-duplex relay-assisted D2D users can share the frequency band of the cellular user for direct communication, by use of cellular network basis configuration, same-time same-frequency D2D communication and cellular communication are realized, power consumption of the cellular communication is reduced, the energy efficiency of a cellular network is effectively improved, and the method is applied to communication environment with requirements for high density and low power consumption.

The invention discloses a heterogeneous network resource allocation method based on reinforcement learning, and the method comprises the steps: firstly deploying a DNN frame at each base station, enabling the frame to be based on an ADMM algorithm, and taking channel information as the weight of a network; giving an optimal resource allocation strategy in the current state according to the data obtained by the base station, namely the current user association information and the average interference power; taking each base station as an independent main body, and the state of the base stationas a modeling environment; enabling a plurality of agent programs to observe the same heterogeneous network environment and take action, wherein the agent programs communicate with one another throughrewards of the environment; and enabling agents to adjust policies according to rewards; the resource allocation method provided by the invention is based on the deep learning network, a resource allocation scheme can be given without all CSI information, the spectral efficiency is considered at the same time, and the spectral efficiency function is set as the award of the agent, so that the spectral efficiency can be ensured while the throughput of the system is ensured.

The invention discloses a hybrid beam forming transmission method and system. The hybrid beam forming transmission method comprises the following steps: a plurality of first antennas of a sending endbase station are connected with a plurality of first radio frequency links through first-part connection sub-arrays and serve a single receiving end device; a plurality of second antennas arranged onthe receiving end device are connected with a plurality of second radio frequency links through second-part of connection sub-arrays, wherein each second radio frequency link is connected with one ormore second antennas arranged on a second-part connection sub-array that are different from each other; and the sending end base station and the receiving end device perform united beam training to confirm an analog weighted coefficient matrix and a digital weighted coefficient matrix, so that downlink transmission of data is carried out based on the analog weighted matrix and the digital weightedmatrix. The hybrid beam forming transmission method and system can provide an effective single-user multi-data stream transmission scheme based on the hybrid beam forming structure of part connectionsub-arrays, which has good performances, reduces the complexity of hardware, and can effectively guarantee spectrum efficiency and improve energy efficiency.

The present invention discloses a narrowband wireless communication method and device. A UE send at least one of a first feature sequence, a second feature sequence, a third feature sequence and a fourth feature sequence. The first feature sequence, the second feature sequence, the third feature sequence and the fourth feature sequence are respectively sent on corresponding resource spaces. The resource spaces belong to a first resource set, and the first resource set performs indication through a first signaling. When transmission time windows of two given feature sequences have collision, the given feature sequences are sent according to a certain predefined priority. Through design of a new uplink non-data channel resource distribution and sending mode, the narrowband wireless communication method and device realize that small resource bears uplink non-data channel transmission. Especially, when the UE uplink transmission only supports single subcarrier, the narrowband wireless communication method and device can effectively send the uplink non-data channel so as to reduce transmission delay and ensure the reliability of the uplink transmission of the narrowband communication system.

The invention discloses a nonlinear effect suspension method and system for a CO-OFDM (Coherent Optical Orthogonal Frequency Division Multiplexing) system. The nonlinear effect suspension method comprises the steps of: at a system sending end, for a random group, acquiring a conjugate symbol in phase conjugation with a pilot symbol so as to obtain a corresponding neighbor estimation group; carrying out carrier mapping on the pilot symbol, the conjugate symbol and a data symbol and sending a carrier to a system receiving end; at the system receiving end, carrying out frequency domain signal reduction on the carrier sent from the system sending end, and extracting the pilot symbol, the conjugate symbol and the data symbol; carrying out coherent superposition on the extracted pilot symbol andthe corresponding conjugate symbol so as to compensate a nonlinear phase shift in the pilot symbol; and estimating a nonlinear phase shift of the data symbol in the same neighbor estimation group byutilizing the extracted pilot symbol and the corresponding conjugate symbol, and carrying out compensation on the nonlinear phase shift of the data symbol. According to the invention, damage caused bya nonlinear effect in the CO-OFDM system can be effectively and comprehensively compensated in real time.

The invention discloses a special power supply for a gate access control system and a control method thereof. The special power supply includes two independent first input-and-output branches, a second input-and-output branch, a switching module and a battery management module, wherein each input-and-output branch possesses an independent protection circuit, meaning that when one of the branches closes the output due to abnormality, the output of others is not affected, and that when the abnormality is resolved, the branches can restore to normality automatically. In addition, each input-and-output branch possesses an independent abnormality counter; and the times of output closing by a branch due to abnormality becomes greater than a set value, attempts to restore to the normal state stop automatically, and restoration can only be realized manually. The special power supply disclosed in the present invention supports the power supply to a standby battery. When the alternating current is cut off, the two outputs are continuously switched and supplied with power by the standby battery. When the alternating current is restored, the system can automatically switch to the alternating current output and charges the batteries.

The application provides a scheduling method and system of the multi-cluster resources in an uplink shared channel. The method comprises the steps of gathering the users needing to be distributed with the uplink resources, generating a user list, calculating the carrier priorities on different carriers of the users in the user list, determining the first carriers and the second carriers corresponding to the users, distributing the uplink resources to the user having the highest scheduling priority in the user list, and bearing the to-be-transmitted resources of the users via the resource clusters of the first carriers and the second carriers, wherein the first carriers having the highest priorities are used to bear the to-be-transmitted resources of the users as much as possible. According to the present invention, the frequency spectrum efficiency of the frequency spectrum resources of each resource cluster is guaranteed while guaranteeing the channel conditions distributed to the resource clusters of the users, thereby improving the resource utilization efficiency of a physical uplink shared channel (PUSCH).

The invention discloses a collocation method of control channels in a communication system, comprising: the communication system supports cyclic prefixes with different lengths, and the numbers of logic resource units occupied by the broadcast control channels of the communication system are same. The invention solves the problem-how the control channels to occupy resource positions and modes, ensures that a terminal can accurately decode control information and ensures the frequency spectrum efficiency of a wireless communication system.

The embodiment of the invention discloses a carrier interference elimination method and device, electronic equipment and a storage medium. The method comprises the following steps: when a radio frequency transceiver receives a plurality of subcarrier signals of a plurality of sub-bands with different parameter sets in the bandwidth of a bandwidth subset BWP, determining an interference eliminationsubcarrier set i corresponding to the ith sub-band; determining an interference elimination subcarrier set j corresponding to the jth subband, i, j being a positive integer, and constructing a received signal model according to the interference elimination subcarrier set i and the interference elimination subcarrier set j; and performing iterative demodulation and signal interference eliminationon the subcarriers in the interference elimination subcarrier set i and the interference elimination subcarrier set j according to the received signal model, so that interference elimination can be carried out on the received subcarriers in the plurality of subbands of different parameter sets on the premise of maintaining the spectral efficiency, and the performance of received subcarrier signalsis ensured.

The present invention discloses a blind carrier offset estimation method in a CP-FBMC communication system. The objective of the invention is to improve the estimation performance while ensuring frequency spectrum efficiency through design of a reasonable virtual subcarrier distribution mode. The technical scheme comprises: distributing three or more than three virtual subcarriers at the emission end of the CP-FBMC system, employing the virtual subcarriers being not adjacent to data subcarriers at the receiving end of the system to calculate a cost function, and the frequency offset test value corresponding to the minimum value of the cost function is a frequency offset estimation value.

The present invention provides a cognitive radio-based power wireless private network resource allocation method, the method includes the following steps: S1. Each SU user periodically perceives the position of the spectrum hole and the size of the spectrum in the spectrum environment of the location; S2 .Establish the resource allocation model R of the electric power wireless private network: S3. Transform the resource allocation into power allocation and subcarrier group allocation according to the established electric power wireless private network resource allocation model R, and perform network resource allocation according to the subcarrier group and optimal power; The impact of time-varying spectrum resources can be considered in the resource allocation of electric power wireless private network, so as to effectively avoid frequent spectrum occupation conflicts and handover problems, thereby ensuring the stability and reliability of users accessing wireless networks, and effectively ensuring spectrum efficiency and system capacity.

The invention discloses an algorithm and an implementation device for multi-user hybrid beamforming in a millimeter-wave large-scale MIMO-OFDM system, which are used to realize a multi-user hybrid beamforming design in a large-scale MIMO-OFDM system. The algorithm is specifically divided into three steps. The first step is to obtain the lower limit of the sum of the base station and user radio frequency link gains under all subcarriers according to the Jensen inequality, and design a common analog coding and combining matrix according to the maximization of the lower limit; the second step , when the common analog coding and combining matrix are known, the digital coding matrix corresponding to all subcarriers at the base station is obtained according to the maximization of the SNR; the third step is to design the digital combining matrix at the user end according to the MMSE criterion. While ensuring the spectral efficiency of the system, the algorithm effectively reduces the interference between users under different subcarriers, and the performance of the algorithm is better in the case of low signal-to-noise ratio.