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227results about How to "Improve access capabilities" patented technology

Statistical-prediction-based automatic cloud CDN (Content Delivery Network) resource automatic deployment method

InactiveCN102801792AImprove resource utilizationReduce energy consumption and operation and maintenance costsEnergy efficient ICTTransmissionData predictionProgram planning
The invention discloses a statistical-prediction-based automatic cloud CDN (Content Delivery Network) resource deployment method which comprises the steps of: predicting a load prediction value in a next 24h according to history data of a load of each edge node of a CDN, formulating a virtual server resource deployment plan of a corresponding edge node, carrying out virtual server resource deployment on each edge node of a cloud CDN; monitoring a load condition of each edge node of the cloud CDN in real time, when the cloud CDN is in a user visit rush time, mounting mirror images configured with relevant businesses to virtual servers by a cloud platform, and starting so as to be added in each edge node of the cloud CDN for sharing burst visit pressure; and when the cloud CDN is in a non-visit rush time, only preserving the virtual server which can keep business operate at a normal level, and recovering idle virtual server resources to a resource pool. According to the statistical-prediction-based cloud CDN resource automatic deployment method, the burst business rush time can be effectively dealt, the resource utilization rate of the CDN is increased, and the energy consumption and the maintenance and operation cost of the CDN are lowered.
Owner:SOUTH CHINA UNIV OF TECH

Multi-user information co-channel sending method and device, and multi-user information co-channel receiving method and device

The invention discloses a multi-user information co-channel sending method and device, and a multi-user information co-channel receiving method and device. The multi-user information co-channel sending method comprises following steps: dividing N users into K groups; generating L superposition symbols according to the modulation symbols of each piece of user information in each group, wherein the K, N and L are integers, the L is more than or equal to K, the K is more than or equal to 1, the N is more than or equal to 2, and the L is not equal to 1; separately carrying out spread spectrum extension on the L superposition symbols by using different sequences in L orthogonal sequences with lengths of L, thus obtaining L symbol sequences; combining the L symbol sequences, thus obtaining combined symbol sequences; and sending transmitting signals formed by the combined symbol sequences. Through the methods and the devices of the invention, the problem that during NOMA downlink sending, in an actual fading channel, the risk of error propagation is great if symbol-level SIC is performed in the demodulation process of the terminal, which causes performance degradation, is solved; and the access performance is improved.
Owner:ZTE CORP

Internet of things gateway, Internet of things terminal, Internet of things gateway protocol self-adaption method and device, and Internet of things terminal protocol self-adaption method and device

The invention provides an Internet of things gateway, an Internet of things terminal, an Internet of things gateway protocol self-adaption method and device, and an Internet of things terminal protocol self-adaption method and device. The Internet of things gateway protocol self-adaption method comprises the steps of receiving a communication request from a terminal; sending a request for obtaining a corresponding first protocol conversion packet to the terminal; judging whether to receive the first protocol conversion packet from the terminal or not; and operating the first protocol conversion packet when the first protocol conversion packet is received, thereby carrying out protocol conversion on a communication protocol of the terminal and the communication protocol of an Internet of things platform. According to the technical scheme, Internet of things gateway protocol self-adaption modes are diversified, a success rate of accessing an Internet of things system by the terminal is improved, and the access capability of the Internet of things system for heterogeneous terminals produced by different producers is improved, thereby facilitating wide application of an Internet of things technology.
Owner:北京物联港科技发展有限公司

Satellite mobile communication method fused with 5G network

The invention provides a satellite mobile communication method fused with a 5G network, and the method is characterized by comprising the following steps: carrying out the modeling of a satellite mobile communication scene, and carrying out the quantitative description of the system composition, a network structure, a communication link, a transmission system, and a working process; establishing high and low frequency networking; establishing satellite-ground cooperative cognitive wireless communication in a dynamic spectrum environment; performing high-dynamic compensation on Doppler frequency shift in mobile satellite communication; and realizing multi-user non-orthogonal multiple access in a mobile satellite communication environment. The method has the beneficial effects that the system effectively utilizes various spectrum resources to improve the data transmission rate and the system capacity; idle unlicensed spectrum is utilized by the system, and the problem of spectrum shortage is solved; the 5G air interface waveform is optimized to enable the 5G air interface waveform to adapt to high dynamic characteristics in a satellite communication scene; the spectrum utilization rate and the system capacity are effectively improved; the problems that a satellite mobile communication system is special in topology, difficult in routing and large in user service end-to-end time delay are effectively solved.
Owner:世讯航空技术有限公司

Meeting realizing method in video monitoring system and video monitoring meeting system

ActiveCN101753961AReduce resource investmentReal-time decisionTelevision conference systemsClosed circuit television systemsVideo monitoringMedia server
The present invention discloses a video monitoring meeting system comprises client, front-end equipment, a monitoring business server and a flow medium server, wherein the monitoring business server is used for setting up a meeting room according to the requirement of the client as a chairman part; when the chairman part starts meeting, the flow medium server is noticed to distribute mixed sound points, and to add the client and / or front-end equipment as meeting members into the mixed sound points; the flow medium server is used for distributing the mixed sound points according to the notice of the monitoring business server, and the client and / or front-end equipment as the meeting members is added into the mixed sound points to receive the sound frequency flows from each meeting member; and after the sound frequency flows are sounded in a mixing way by the mixed sound points, the sound frequency flows are distributed to corresponding meeting members. In addition, the present invention also discloses a realizing method of meetings in the video monitoring system. The technical scheme disclosed by the present invention can realize a meeting function in the video monitoring system, and thus, the invest cost is saved.
Owner:VIMICRO ELECTRONICS CORP +1

Method and system for comprehensively optimizing energy storing power station planning and operating

The invention discloses a method for comprehensively optimizing energy storing power station planning and operating. The method comprises the first step of constructing a real-part matrix G and a virtual matrix B of a node admittance matrix used for carrying out load flow calculation according to network parameters of an electric power system and determining the upper limit value and the lower limit value of voltage of all nodes and the upper limit value and the lower limit value of all line power flow when the electric power system operates safely and stably, the second step of determining the upper limit value and the lower limit value of work output of a common electric generator, determining generating cost parameters of the common electric generator, determining the upper limit value and the lower limit value of the work output of a wind turbine generator or a wind power motor field and determining the penalty electricity price for draught fan fault according to the power source parameters of the electric power system, the third step of determining the capacity price, the power price and the average service life of an energy storage system and daily maintenance charge according to parameters of the energy storage system, the fourth step of determining the typical day wind power predicted data of the wind turbine generator or the wind power motor field, determining the day load data, determining the backup data of rotating of the electric power system and determining the transmission loss price of the electric power system according to scheduling operating data of the electric power system, and the last step of determining an inner layer optimization model and an outer layer optimization model according to the data collected in the first step, the second step, the third step and the fourth step.
Owner:TSINGHUA UNIV

Access mode switching method of multimode double-card terminal and related device

The invention discloses an access mode switching method of a multimode double-card terminal and a related device. The access mode switching method comprises the steps of if a fact that a main card cannot be used normally, a secondary card is in an available state and the secondary card support at least one other access mode except for an access mode supported by a secondary path is determined, indicating a main path to carry out network search of a set access mode according to a pre-stored PLMN (Public Land Mobile Network) frequency point list of an operator network related to the secondary card; and when determining that an available set access mode cell is searched, indicating a main path to access to a network corresponding to the searched set access mode cell, wherein the set access mode indicates an access mode which is supported by the secondary card rather than a secondary path, that is to say, a user can use one or multiple wireless access technologies supported by the secondary card to carry out corresponding service transmission through the main path and is no longer limited by the access mode supported by the secondary path. Therefore, the practical access capability of the secondary card is extended, and the flexibility of the terminal use mode is improved.
Owner:CHINA MOBILE COMM GRP CO LTD

HIS (Hospital Information System) interface calling method and HIS interface configuration method

The invention relates to a method for invoking an HIS interface and a method for configuring the HIS interface, which are suitable for the situation that a platform initiates a transaction request to the HIS system and invokes the HIS interface. Wherein, the method for invoking the HIS interface includes: first reading configuration information, wherein the configuration information is generated when the platform accesses a new HIS interface, and the configuration information is a mapping relationship of related information between the platform and the HIS system. Then convert the platform information into information suitable for the HIS system according to the configuration information. Finally, call the HIS interface according to the information applicable to the HIS system. Therefore, when the platform is connected to different HIS systems, as long as the above-mentioned configuration information is obtained, the HIS interface calling method provided by the present invention can be used to directly call the HIS interface, that is, the same set of docking procedures can be applied to the situation where the platform is connected to different hospitals. The access capability of the platform is improved, and the cost of development and maintenance is saved.
Owner:SHENZHEN NINGYUAN TECH CO LTD

Stacked wavelength-division and time-division multiplexing passive optical network transmission system based on OFDM (orthogonal frequency division multiple)

The invention provides a stacked wavelength-division and time-division multiplexing passive optical network transmission system based on OFDM (orthogonal frequency division multiple). The stacked wavelength-division and time-division multiplexing passive optical network transmission system comprises an optical line terminal, a feeder optical fiber and a plurality of passive optical network systems. The passive optical network system comprises a remote node, a plurality of distributed optical fibers and a plurality of optical network units. The optical line terminal is connected to the remote node through the feeder optical fiber, and the remote node is connected to the optical network units through the distributed optical fibers. The stacked wavelength-division and time-division multiplexing passive optical network transmission system provided by the invention utilizes the OFDM technology to enable downlink transmission data to have a high dispersion resisting capacity, improves the access capability of the passive optical network (PON), and has the advantages that the passive optical network transmission system is easy to upgrade and reconstruct on the basis of the existing network and the system cost is low.
Owner:SHANGHAI JIAO TONG UNIV

Security constraint generation schedule planning method based on water and fire coordination

ActiveCN104299072AReduce the total adjustment range of outputReduce power regulation lossesForecastingResourcesElectricityPower grid
The invention provides a security constraint generation schedule planning method based on water and fire coordination. The method comprises the following steps that power grid basic data are acquired, and electricity demands are determined; based on 'just, fair and open' dispatching and energy-saving dispatching, the electric quantity is balanced, and electric power is adjusted; according to the water and fire coordination constraint demand, the constraint condition of a water and fire coordination joint optimization model is determined; an optimization objective is determined; water and fire coordination joint optimization computing is carried out, and the generation schedule is determined. According to the method, based on the running and planning characteristic of a power grid including a large-scale water and electricity access dispatching mechanism, the water and electricity running and water and fire coordination optimizing characteristics are combined, the optimization objective includes the running cost of a thermal power unit and a hydropower unit and a unit output force adjusting penalty function, peak elimination and valley filling are carried out through coordination of the hydropower unit and the thermal power unit, so that the total adjusting amplitude of output force of the units in the system is reduced, and therefore power adjustment losses of the units in the system are reduced.
Owner:STATE GRID CORP OF CHINA +2
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