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32results about How to "Guaranteed access performance" patented technology

Low-orbit satellite Internet of Things channel resource dynamic allocation method based on SDN

ActiveCN112272412ASolve problems such as centralized management difficultiesMaximize access success rateNetwork topologiesTelecommunicationsGeoweb
The invention provides a low-orbit satellite Internet of Things channel resource dynamic allocation method based on SDN. In an access matching flow table calculation step, the distance between the sub-satellite point position of each satellite and the geographic grid where a satellite Internet of Things terminal is located is calculated through a ground controller to judge which satellite should be selected by the terminal for access; in a satellite channel resource dynamic allocation step, the QoS grade, the quantity, the minimum access success rate limit and the satellite available resourcesof the access terminal service are calculated through a satellite controller, and the channel resources are dynamically divided; and in an access control assisted random access step, competitive random access is carried out according to the channel resources allocated by the terminal. According to the method, on the basis of an SDN architecture, channel resources are allocated through cooperativeoptimization of the ground controller and the satellite controller, so that the access success rate of high-priority services is maximized and the access performance of services with different priorities is guaranteed while the success rate of accessing channels of services with medium and low priorities is not lower than a specified threshold value.
Owner:NANJING UNIV OF POSTS & TELECOMM

Networking backup system and backup method

The invention discloses a networking backup system which comprises a document uploading module, a document receiving module, a storage index module, a document recording module, a magnetic disk storage module and a document caching module, wherein the document uploading module is used for calculating a MD5 value of a document and transmitting the document from a client to a server; the document receiving module is used for receiving the document content uploaded by the document uploading module and the MD5 value calculated by the document uploading module and storing the document record; the storage index module is used for recording the MD5 characteristic information of different documents for indexing by the document receiving module; the document recording module is used for recording the original recording information of the uploading document; the magnetic disk storage module is used for storing the document content; the document caching module is used for caching the compressed files of the frequently downloaded applications. The networking backup system can utilize a document fingerprint technique to eliminate the redundant documents in the document storage on the server side and can save the server-side magnetic disk space. The invention also discloses a networking backup method.
Owner:厦门天锐科技股份有限公司

Method utilizing current internet data and service

The invention discloses a method utilizing current internet data and service, belonging to the integrated application of a distributed technology in an internet system. The method comprises the following steps: firstly requiring to establish a peer-to-peer server mainly aiming at devoting self source; endowing the server with the ability of converting current internet data and service, namely obtaining data and service through being communicated with the current internet, and utilizing the data and service in a mode accepted by a large-scale non-center internet. In the process, the peer-to-peer server peers and diverges the current internet server to ensure that the operation mode of the current internet server is in conformity with that of the peer-to-peer server from the view of a user'the peered and diverged internet server is added into a corresponding channel in a manual or automatic mode to ensure that the internet server can receive accession with ambiguous range and is easy to generate stream. The current internet engine also can be utilized and reformed progressively by using similar methods. The method takes full advantages of current internet data, service and computing resource to enable the current internet to organically combine with the large-scale non-center internet, thus changing the disadvantages of the current system and devoting source thereof to novel internet.
Owner:李冰

A network backup system and backup method

The invention discloses a networking backup system which comprises a document uploading module, a document receiving module, a storage index module, a document recording module, a magnetic disk storage module and a document caching module, wherein the document uploading module is used for calculating a MD5 value of a document and transmitting the document from a client to a server; the document receiving module is used for receiving the document content uploaded by the document uploading module and the MD5 value calculated by the document uploading module and storing the document record; the storage index module is used for recording the MD5 characteristic information of different documents for indexing by the document receiving module; the document recording module is used for recording the original recording information of the uploading document; the magnetic disk storage module is used for storing the document content; the document caching module is used for caching the compressed files of the frequently downloaded applications. The networking backup system can utilize a document fingerprint technique to eliminate the redundant documents in the document storage on the server side and can save the server-side magnetic disk space. The invention also discloses a networking backup method.
Owner:厦门天锐科技股份有限公司

A dynamic allocation method of low-orbit satellite Internet of Things channel resources based on sdn

ActiveCN112272412BSolve problems such as centralized management difficultiesMaximize access success rateNetwork topologiesTelecommunicationsEngineering
The present invention provides an SDN-based low-orbit satellite Internet of Things channel resource dynamic allocation method. The access matching flow table calculation step calculates the sub-satellite point position of each satellite and the geographical grid where the satellite Internet of Things terminal is located through the ground controller. Judging which satellite the terminal should choose for access; the satellite channel resource dynamic allocation step uses the satellite controller to calculate the QoS level, quantity, minimum access success rate limit and satellite available resources of the access terminal service, and dynamically divides the channel Resources: the random access step assisted by access control performs contention random access according to the channel resources allocated to the terminal. Based on the SDN architecture, the method optimizes channel resource allocation through the ground controller and satellite controller, while ensuring that the success rate of medium and low priority services accessing the channel is not lower than the specified threshold, and maximizing high priority services. The access success rate is high to ensure the access performance of services with different priorities.
Owner:NANJING UNIV OF POSTS & TELECOMM

SSD and HDD hybrid cache management method and system for an energy-saving storage system

ActiveCN105892947BReduce visitsHigh energy consumption for operationInput/output to record carriersElectricityNew energy
The invention discloses an SSD and HDD hybrid caching management method and system of an energy-saving storage system. The method comprises the steps that hybrid caching comprising SSD caching and HDD caching is built, the hottest data is stored by means of SSD caching, and hot data is stored by means of HDD caching; a global access list on the basis of combing the state and heat is created; classification processing is conducted on user requests according to the global access list; operation is conducted on data nodes of a primary storage pool according to the power supply status, wherein hybrid caching comprising SSD caching and HDD caching is introduced onto the primary storage pool of the energy-saving storage system facing new energy resources; in the period when electricity supply is inadequate, a catching layer processes most of requests of the storage system, data availability and access performance are guaranteed, and the access frequencies of the primary storage pool are reduced; data of a disk in an opening state is preferably eliminated in caching, data of a closed disk is reserved in HDD caching as much as possible, passive opening of the closed disk is reduced, and the effects of reducing passive opening of the disk and access energy consumption are achieved.
Owner:HUAZHONG UNIV OF SCI & TECH

A method and device for reducing service load of a cell

ActiveCN109587740BGuaranteed service rateImprove business speedTransmission path divisionWireless communicationTerminal equipmentPrimary cell
The embodiment of the present invention provides a method and equipment for reducing the service load of a cell, so as to better realize the compatibility of the CA technology and the same coverage technology for multiple cells using the same coverage technology and the CA technology. The method includes: when the service load of the primary cell is greater than a first threshold, the network device switches a terminal device that accesses the primary cell and does not support carrier aggregation technology from the primary cell to the secondary cell, and both the primary cell and the secondary cell use carrier aggregation technology and the same coverage technology; when all terminal devices accessing the primary cell support the carrier aggregation technology, and the service load of the primary cell is greater than the first threshold, the network equipment stops the primary cell and the secondary cell from using the carrier aggregation technology; when the service load of the primary cell When the difference between the load and the service load of the secondary cell is less than the second threshold, and the service load of the primary cell is not greater than the first threshold, the network device uses the carrier aggregation technology for the primary cell and the secondary cell.
Owner:DATANG MOBILE COMM EQUIP CO LTD
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