1118results about How to "Guaranteed communication quality" patented technology

The invention provides quality assured network services in a multi-domain network and comprises a network service management device for managing device clusters incorporated within the operations management network of each provider network and receiving service orders, and a multi-domain service broker for providing a broker function for achieving agreement between a plurality of providers, and the multi-domain service broker further comprises a device for collecting domain information and information relating to the services each provider is able to provide from the network service management devices, and a device which on receipt of a network service request from a customer, extracts the network service management device of the domain which is able to satisfy the required quality level, and then issues instructions for the setting of the required information within the extracted network service management device.

Signal repeater system of the general type that facilitates using various standards and various modulation types to improve properties with various infrastructure, in particular power grid systems.

The embodiment of the invention discloses a method and equipment for coordinating downlink transmitting power between base stations. By applying the technical scheme of the embodiment of the invention, the coordination of downlink transmitting power between the base stations can be carried out under the condition of fully taking the ABS configuration information of an interference base station into account, so that the downlink interference between the base stations is reduced, the throughput of a system in the downlink direction is improved, the generation of conditions of interference, and the like caused by dispatching a cell edge user by mistake through continuously using an intercell interference eliminating technology in an isomorphism network under the condition of introducing ABS is prevented, and thereby the use experience of the user is improved and the communication quality of the system is guaranteed.

The embodiment of the invention provides a mobile terminal and a method and device for switching antennas of the mobile terminal. The method includes the steps of receiving first signal intensity received by the first antenna on the mobile terminal and second signal intensity received by the second antenna on the mobile terminal, comparing the first signal intensity with the second signal intensity, and controlling the mobile terminal to use the antenna with the high signal intensity. According to the mobile terminal and the method and device for switching the antennas of the mobile terminal, the problems that the mobile terminal is large in power consumption, short in stand-by time and poor in communication quality can be solved.

The invention discloses a central air conditioner intelligent control system based on a wireless sensor network and a method, and belongs to the technical field of central air conditioner control. The central air conditioner intelligent control system comprises an intelligent information management center, wireless communication devices, a central air conditioner information monitoring and control module, a room information monitoring and control module and the like. The invention adopts the method that the central air conditioner intelligent control system is used to monitor information, build a data base, calculate current load of the system, and realize advance, accurate and optimized control of a central air conditioner system by combining a short-term loading forecasting method based on similar dates and fuzzy control technology, as well as taking the temperature variation of supply / return chilled / cooling water of a central air conditioner as the manipulated variable. The central air conditioner intelligent control system has the characteristics of great communication capacity, guaranteed communication quality, powerful network functions, wide monitoring range and extensive control quantity of the central air conditioner system, optimized control, high control accuracy, good energy saving effect and the like, and can be widely used in energy-saving optimizing control of various buildings, and is particularly suitable for energy-saving optimizing control of central air conditioners of intelligent buildings.

The invention discloses a D2D resource allocation method based on multi-agent deep reinforcement learning, and belongs to the field of wireless communication. The method comprises the following steps:firstly, constructing a heterogeneous network model of a cellular network and D2D communication shared spectrum; establishing a signal to interference plus noise ratio (SINR) of a D2D receiving userand an SINR of a cellular user based on the existing interference, respectively calculating unit bandwidth communication rates of a cellular link and a D2D link, and constructing a D2D resource allocation optimization model in a heterogeneous network by taking the maximum system capacity as an optimization target; For the time slot t, constructing a deep reinforcement learning model of each D2D communication pair on the basis of the D2D resource allocation optimization model; And respectively extracting respective state feature vectors from each D2D communication pair in the subsequent time slot, and inputting the state feature vectors into the trained deep reinforcement learning model to obtain a resource allocation scheme of each D2D communication pair. According to the invention, spectrum allocation and transmission power are optimized, the system capacity is maximized, and a low-complexity resource allocation algorithm is provided.

In a mobile communication system including an access gateway (AGW) comprising a C-AGW for handling control messages and a plurality of U-AGWs for forwarding data packets, the C-AGW is provided with a management table indicating an address of U-AGW to be an endpoint of tunnel, in association with each of mobile station IDs. When a tunnel setup request message including a mobile station ID is received from one of base stations, the C-AGW searches the management table for the address of U-AGW corresponding to the mobile station ID and notifies the base station of the U-AGW address, and if the mobile station ID is not found in the management table, the C-AGW notifies the base station of an address of a particular U-AGW selected out of the U-AGWs, so that the base station establishes a tunnel for forwarding data packets toward the notified U-AGW.

An ATM switch allowing simplified OAM processing only on the line incoming side is disclosed. An incoming line circuit has a header conversion table storing information indicating whether the system is an end point of an OAM processing flow for each connection and an OAM table storing an AIS flag and an RDI flag for each connection. As for an OAM cell found by referring to these tables to be forced to go back to its own port, an switch output port number is rewritten in the OAM function section. In addition, in the case of an AIS cell, the function type is rewritten so as to become an RDI cell. In the case of an LB cell, the LB indication is rewritten so as to become a return LB cell, and switching to its own port is conducted in the ATM switch core.

Correct reception of messages and data by a mobile station or radio base station is enabled in a planned timing by adjusting a receiving or transmit timing in consideration of a time (an occurrence of a time lag) required for relay processing in a radio relay station within a radio communication system.For that purpose, time lag information related to a relay delay due to relay processing in the radio relay station is set to the radio base, the receiving timing of the mobile station is determined based on the time lag information, and the transmit timing of the radio base station 1 or the receiving timing of the mobile station is controlled according to the determined receiving timing.

The present invention discloses a cell handoff method and a user equipment based on a TDD system. The method includes: step A. a UE measures received pilot channels of a source cell and a neighboring cell according to a measurement control message and reports measurement result to a RNC; step B. the RNC, determines whether a target cell to be subject to a cell handoff process has available resources at a time slot different from that of the source cell and if yes, transmits a cell handoff command to the UE, allocates available resources for the UE in the target cell and transmits traffic carrier data of the UE to the source cell and the target cell respectively; and step C. after receiving the cell handoff command, the UE communicates with the source cell and the target cell at a same frame and at same time according to the allocated available resources. According to the handoff method of the present invention, UE can more reliably receive the handoff control command transmitted by the RNC and during the handoff process, the transmission power and interference are reduced so that the reliable handoff of a UE is guaranteed and the system performance is improved.

The invention discloses a method capable of dynamically regulating transmitting power. The method comprises obtaining power value of a received wireless signal, judging whether the power value is arranged in a preset threshold scope, the transmitting power is not regulated, or the transmitting power is regulated. The invention further discloses a device and an intelligent terminal capable of dynamically regulating the transmitting power. The technical scheme includes that the device and the intelligent terminal capable of dynamically regulating the transmitting power reduces power consumption and electromagnetic radiation of Bluetooth equipment under the condition that Bluetooth communication quality is ensured.

The invention provides a neural network equalization method used for an indoor visible light communication system, and belongs to the visible light wireless communication technology field. The method includes the steps: utilizing a ceiling bounce model to calculate a VLC channel impulse response, carrying out photoelectric conversion for a visible light power signal received by a receiving end, and sending a sequence to a neutral network channel equalizer after amplification sampling; utilizing a heredity algorithm to optimize initialization weights and thresholds among neurons, establishing a neural network for training, and minimizing an error function; and judging an output, restoring the sent sequence, and finally achieving an equalization purpose. According to the scheme, interference among codes is obvious minimized, an error rate is reduced, the communication quality is further improved, a transmission rate that the system can reach is increased, the training time is shortened, and the system complexity is reduced.

The invention discloses a cloud control platform system for vehicle-vehicle and vehicle-road collaboration and a collaboration system and method. The cloud control platform system comprises an interconnection and intercommunication module (11), a perception fusion module (12), a basic data real-time message system (13) and a user application real-time operation environment (14). The user application real-time operation environment (14) provides a real-time optimized cloud computing environment for the user application on the cloud control platform system (1) according to the requirements of each network connection application on real-time performance and time delay, and performs real-time deployment and migration on the user application based on working conditions; And the interconnectionand intercommunication module (11) regulates and controls the external communication of the cloud control platform system (1) according to the working condition, or regulates and controls the externalcommunication used by the user application by sending an instruction.

A radio transmission apparatus capable of further improving the frequency use efficiency and the transmission speed while maintaining the communication quality. In this apparatus, switching is performed according to the transmission path condition between the followings: transmitting different information transmission signal A <> transmission signal B with an identical frequency from a plurality of antennas 106, 116 space multiplexing, transmitting different information transmission signal A <> transmission signal B with different frequencies from the plurality of antennas 106, 116 frequency multiplexing, transmitting identical information transmission signal A = transmission signal B with an identical frequency from the plurality of antennas 106, 116 space diversity, and transmitting identical information transmission signal A = transmission signal B with different frequencies from the plurality of antennas 106, 116 frequency diversity.

The invention provides a pilot frequency information and satellite ephemeris joint Doppler frequency shift estimation and compensation method which includes the steps: a receiving pilot frequency signals from a low-orbit satellite by a ground terminal k; b acquiring satellite ephemeris data of the latest time tk, the frequency and the phase of carrier waves and the frequency and the phase of pseudo codes based on the pilot frequency signals by the ground terminal k; c calculating Doppler frequency shift between the ground terminal k and the low-orbit satellite based on satellite ephemeris information of the pilot frequency signals corresponding to the latest time tk, the frequency and the phase of the carrier waves and the frequency and the phase of the pseudo codes; d adjusting the frequency of the pseudo codes and the frequency of the carrier waves based on the Doppler frequency shift, and performing Doppler compensation when uplink signals are transmitted. The Doppler frequency shift is estimated and compensated by a high-precision pilot frequency method with small calculated amount, and the Doppler frequency shift is preferentially estimated and compensated by a high-precision orbit ephemeris method when the terminal suddenly cannot receive the pilot frequency signals due to reasons such as blocking of tall buildings.

The invention relates to a multi-frequency carrier aggregation WIFI data transmission method and device and a terminal device. The multi-frequency carrier aggregation WIFI data transmission method comprises the following steps: when the WIFI networks covering the terminal contain a plurality of signal frequency bands, controlling the WIFI channel operating in the frequency bands in the terminal enter into the enabled state at the same time; establishing a communication link with each one of the signal frequency bands mentioned above; using the established communication links to transmit the data together. Thus, the transmission bandwidth is widened, and the data transmission rate is improved without increasing the antenna; meanwhile, according to the embodiment of the invention, the weight ratio of the first information flow of each communication link is calculated according to the signal transmission rate of each communication link; and the WIFI data to be transmitted is allocated to each communication link according to the first information flow weight ratio of each communication link; therefore, the information flow weight of each signal frequency band can be flexibly configured, the information capacity is maximized while ensuring the communication quality, and the spectrum resources can be better used.

The invention provides a networking work mode selection method and device and a terminal. The networking work mode selection method comprises the steps that the preset work mode parameter informationis acquired; networking work mode ordering information is obtained according to the preset work mode parameter information and the networking work mode information; and the networking work mode ordering information is transmitted to a base station, wherein the preset work mode parameter information includes the work mode preference setting information for the terminal and the power supply state information. According to the scheme, the networking work mode ordering information is obtained according to the preset work mode parameter information and the networking work mode information and the networking work mode ordering information is transmitted to the base station so that the base station is enabled to determine the matched networking work mode to dispatch the terminal from the networking work mode ordering information reported by the terminal according to the capacity information of the base station. The problems in the prior art that the terminal simultaneously supporting the 5G independent networking and non-independent networking mode cannot select the networking work mode can be greatly solved.

The invention discloses a route node microstructure of a network on chip, which comprises a head decode module, an input buffer module, an input control module, an output arbitration module, an output buffer module and an output control module. The head decode module performs the head analysis to data entering the route node from the upper route node, and inputs the data to the input buffer module; the input buffer module is used for the temporary storage of the data, and outputs the data to the output arbitration module under the action of the input control module. After the data enters the output arbitration module, the output arbitration module determines whether outputting the data to the output buffer module according to the state of the input control module, and the output arbitration module controls the whole output link so as to realize that the data is transmitted to the next route node. Through the route node microstructure of the invention, the data transmission among the route nodes of the network on chip can be realized, and the transmission efficiency can be greatly improved.

The invention relates to the technical field of computer networks, and discloses a method for generating and maintaining a virtual backbone network in mobile adhoe networking. The method comprises the following steps: S1, under the control of a timer, a node u carries out environment perception on exchange state information among neighbor nodes of the node u, selects an initial cluster and declares respective regions; S2, each node selects a neighbor node with highest priority as an access node, continuously adds the access node into different regions, and constructs a region virtual framework network using the initial cluster as a center in a distributed manner; and S3, constructing a global virtual framework network by selecting a boundary gateway node to be communicated with the adjacent region virtual framework network. According to the invention, the problems of low efficiency and instable data routing under dynamic topology of a flooding route mode can be effectively solved.

The present invention discloses a method, an apparatus and a system for acquiring load information. In one method, a source access controller and a target access controller can interact through inter-Radio Access Technology (RAT) handover related messages so that a source RAT system can acquire load information of a target RAT system when an inter-RAT Packet Switched (PS) handover is performed. This enables load balancing between different RAT systems so as to guarantee communications quality of the systems. In another method of the present invention, the source access controller and the target access controller interact through a Radio Access Network (RAN) Information Management (RIM) based load information request message and an RIM based load information response message, so that the source RAT system can acquire load information of the target RAT system before an inter-RAT PS domain handover is performed.

The invention relates to a 5G mobile edge computing-based task unloading and resource allocation joint optimization method, and belongs to the technical field of mobile communication. According to themethod, a task unloading decision, resource block distribution and computing resource distribution are jointly modeled into a minimum system overhead problem, and the minimum system overhead problemis decomposed into three sub-optimization problems to be solved. The method comprises the following steps of firstly, considering that UE delay sensitivity in an actual network is different, proposinga distributed resource block distribution algorithm based on the UE delay priority, dividing the UE into UE blocks with different priorities according to the UE delay sensitivity, preferentially allocating the resource blocks for the UE with high priorities, and meanwhile, ensuring the communication quality of the UE with low priority; secondly, enabling each piece of UE to make an unloading decision according to the task local computing overhead and the task unloading computing overhead; and finally, with the goal of minimizing the total execution time of the total unloading task in the MECas a target, allocating the computing resources to the UE.

To secure a constant level or more of radio communication quality for each user equipment performing radio communication with a base station apparatus, and to increase the number of user equipment which the base station apparatus can accommodate under a condition of assuring the radio communication quality. In a radio communication system where there exist a base station apparatus having multiple antennas and user equipment for performing radio communication with a first antenna group including one or more of the antennas, the first antenna group is made configurable for each user equipment individually, and addition / deletion of the antenna to / from the first antenna group is performed based on the communication quality of each user equipment so that the number of antennas within the first antenna group may be minimized within a range satisfying a required value of the communication quality between the base station apparatus ad the user equipment.

The invention discloses a quantum key distribution system and method based on time-slot mixed active polarization compensation. The quantum key distribution system comprises a transmitting terminal, an optical signal generation module, a polarization modulator, a synchronous signal generator, a wavelength division multiplexing module, a wavelength division multiplexing solution module, a synchronous signal receiver, a polarization demodulator, a signal detection module and a receiving terminal. According to the quantum key distribution system and method, adopted reference light pulse signals and quantum pulse signals have the same wavelength, the magnitude of single pulse energy of the reference light pulse signals is far larger than the magnitude of single pulse energy of the quantum pulse signals, and the magnitude can be detected through a photoelectric detector. The reference light pulses do not need to be accumulated repeatedly to calculate sums when the detection is carried out, and the polarization compensation rate can be greatly promoted. After the active polarization compensation, and different polarization codes are detected based on a unified polarization detection device, so the quantity of SPAD can be reduced. An optical switch is utilized to carry out switchover on a detection light path, the phenomenon that the strong reference light pulse signals directly impact the SPAD, and therefore communication quality of quantum signals can be guaranteed.

The invention discloses a joint power control and proportional fair scheduling method for D2D communication in a cellular network, relates to the field of D2D communication in the cellular network, and aims to solve the problem of common-channel interference between users and the problem of fairness between the users due to the fact that the maximum throughput capacity of a system is used as a target in the existing interference suppression algorithm. An optimal power control method is used for realizing interference suppression. Meanwhile, aiming at the problem of user fairness caused by the time-varying characteristic of a channel under the condition of coexistence of multiple users, the invention adopts the proportional fair scheduling method so as to meet the demand of the users for the fairness. A cellular network model for multiplexing uplink resources for D2D communication is constructed, and mathematical modeling and solving for joint power control and proportional fair scheduling are carried out for the network model. The interference suppression method for joint power control and proportional fair scheduling, which is provided by the invention, can guarantee the quality of user communication and improve the throughput capacity and the fairness of the system.

The present invention reduces the delay time to extremely short by monitoring the output / distribution unit of the exchange node to specify the unused time slot as write destination of the data and performing priority control by the priority control signal contained in the data. The traffic congestion is resolved by performing write output to the specified time slot regardless of the communication speed of the transmission path of the data. Furthermore, the present invention aims to provide the exchange node and the exchange node control method that ensures communication quality by using the connection type as the communication method since the delay time in communication can be reduced.The exchange node 100 according to the present invention includes an input buffer unit 2, an identification unit 7, a distribution unit 5, a multiplexing circuit 9, a time slot allocation circuit 12, and an output / distribution unit 10. More preferably, a frame compression circuit 16, a frame decompression circuit 18 and a priority determination circuit 20 are arranged.

A mobile communication control system, which includes at least one mobile station and at least one base station, includes first through third parts. The first part measures traffic of radio channels in one or both of the above-mentioned at least one mobile station and the above-mentioned at least one base station. The second part measures a communications quality of radio channels in use. The third part determines a transmit power on a transmitting side and an information transmission bit rate on the basis of the traffic of the radio channels in use and information as to whether the transmit power on the transmitting side has reached a maximum transmit power.

The invention discloses a multi-cell interference suppression method between a cell and an end-to-end hybrid network in the technical field of mobile communication. Communication interference is produced by a cell user, the ID (Identity) of an interfered end-to-end user is decoded by the cell user through monitored public control channel information monitored, and the information is reported to a central controller; information exchange is carried between the central controller and a central controller of an adjacent cell, and the exchanged information is transmitted by the central controller of the adjacent cell to the interfered end-to-end user in the local cell; frequency information capable of being multiplexed is obtained when uplink resource distribution information detected by the cell user of the local cell is received by the interfered end-to-end user, and the multiplexing frequency is adopted for end-to-end communication; and the communication priority of the cell user producing the communication interference is higher, and the interfered end-to-end user controls the transmission power to resist against interference caused by the cell user producing the communication interference. The quality of the communication of end-to-end users can be improved.

The invention relates to an antenna system and a control method for the antenna system. The antenna system comprises a control module, a master set high-frequency antenna, a master set medium and low-frequency antenna, a diversity high, medium and low-frequency antenna, a master set high-frequency antenna switch module, a master set medium and low-frequency antenna switch module, a diversity medium and low-frequency antenna switch module and an antenna selector switch, wherein the master set high-frequency antenna is connected with the master set high-frequency antenna switch module; the master set medium and low-frequency antenna and the diversity high, medium and low-frequency antenna are connected with the master set medium and low-frequency antenna switch module and the diversity medium and low-frequency antenna switch module through the antenna selector switch; the control module is configured to judge a frequency band in which a current network signal is located; and when the current network signal is in a high-frequency band, the antenna selector switch is controlled to be in an unswitched state. On one hand, the antenna system is relatively simple and compact in structure, and does not affect the use experience of a user; and on the other hand, the problem that the signal which is received and transmitted through the master set high-frequency antenna is affected by the signal which is received and transmitted through the diversity high, medium and low-frequency antenna in the high-frequency band is solved.