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126results about How to "Save cache space" patented technology

Method and system for accessing information

InactiveCN104092776AMultiple copies avoidSave cache spaceTransmissionObjective informationData source
The invention discloses a method and system for accessing information. The method includes the steps of caching the information in a data source according to the one-to-one mapping relation, caching same contents into certain edge accessing servers, and storing one-to-one mapping relations between the information contents and the edge accessing servers to form a mapping relation table; based on the mode, when accessing requests of terminals are received, if requested information contents are contained in the table, representing that requested target information is cached in the servers, and directly obtaining the servers where the target information is cached from the table; if the requested information contents are not contained in the table, calculating the edge accessing servers corresponding to the target information, caching the target information in the data source into the servers, and meanwhile adding mapping relations between the information and the servers into the mapping relation table; then responding to the terminals, and informing the terminals of the servers where the target information is cached to enable the terminals and the servers to be in communication to achieve information accessing. By means of the method and system, multiple copies of the same contents are avoided, and cache space is saved.
Owner:BEIJING CYCLE CENTURY DIGITAL TECH

Method for multiplexing HARQ (Hybrid Automatic Repeat reQuest) processes

The invention provides a method for multiplexing hybrid automatic repeat request (HARQ) processes and belongs to the technical field of mobile communication. According to the method, at a user side, the HARQ processes are divided into physical HARQ processes and logic HARQ processes, and a physical process storage table and a logic process storage table are established. A state of each physical HARQ process, a mapping relationship between the physical HARQ processes and the logic HARQ process, and space addresses for caching soft bits are stored in the physical process storage table. NDIs (NewData Indicators) expected by the user side are stored in the logic process storage table. When downlink transmission receiving of a user is unsuccessful, the available physical processes are selectedfor caching the soft bits, the mapping relationship between the logic processes and the physical processes is recorded, and the expected NDIs of the logic processes are kept unchanged. When the downlink transmission receiving is successful, only the expected NDIs corresponding to the logic HARQ processes are overturned, and the soft bits are not cached. According to the method, the number of theHARQ processes and cache space required by the user side are reduced.
Owner:BEIJING UNIV OF POSTS & TELECOMM

A method and system for video caching based on cooperation among multi-cache servers

The invention provides a method and a system for video caching based on cooperation among multi-cache servers. The method comprises the following steps: according to the data transmission delay from abase station to a corresponding buffer server, the data transmission delay between different base stations, and the data transmission delay from a video source server to each base station, the overall time delay satisfying the video requirements of all user terminals is calculated under the condition of the existing video buffer strategy of the buffer network; the video file is moved to a new candidate buffer location to constitute a candidate video buffer strategy. The overall delay corresponding to all candidate video buffer strategies is compared with the overall delay corresponding to theexisting video buffer strategies, and the optimal video buffer strategy of the buffer network is determined according to the comparison results. The method of the invention comprehensively utilizes the characteristics of video transcoding to reduce the buffer space, and further extends the buffer space to a mechanism in which multiple buffer servers can cooperate with each other, thereby effectively improving the utilization rate of video resources.
Owner:BEIJING JIAOTONG UNIV

Transmission method and system for multimedia content, and corresponding method, subscriber terminal and device

The invention discloses a transmission method and system for a multimedia content, and a corresponding method, subscriber terminal and device. The transmission method includes that: a multimedia content distribution device determines an attribute value of the multimedia content, and sends the multimedia content containing the attribute value to a broadcast network; according to an attribute of the multimedia content, the broadcast network determines a broadcast priority of the multimedia content, and broadcasts the multimedia content which meets a specified requirement of the broadcast priority to the subscriber terminal; the subscriber terminal feeds access information of the own multimedia content back to a cellular eNB; the cellular eNB feeds the access information of the multimedia content back to the multimedia content distribution device; the multimedia content distribution device amends the corresponding attribute value of the multimedia content according to the access information of the multimedia content, and sends the amended attribute value of the multimedia content to the broadcast network, and then the broadcast network updates the broadcast and rebroadcasts. According to the invention, the load of a communication transmission pipeline caused by the increase of the service volume can be relieved, and the utilization efficiency of the system capacity is improved.
Owner:BEIJING SAMSUNG TELECOM R&D CENT +1

Distributed storage cache management method and system, storage medium and equipment

The invention provides a distributed storage cache management method and system, a storage medium and equipment. The method comprises the following steps: selecting object granularity and stripe width in a distributed underlying storage cluster based on the rated size of a file; fragmenting data of the file into a plurality of object units based on the object granularity and the stripe width, and writing the object units into a distributed underlying storage cluster in a manner of taking the object as the granularity, wherein the writing in the manner of taking the object as the granularity meets a locality principle; in response to a received read request sent by a client, searching in the cache according to the read request; in response to the fact that the data corresponding to the read request does not exist in the cache, performing prefetching management on the distributed underlying storage cluster by taking the object as the granularity, constructing the cache, and searching in the cache again according to the read request; and in response to the data corresponding to the read request found in the cache, returning the corresponding data and cache hit from the cache. According to the method, the cache space is saved, the prefetching hit rate is increased, and the overall IO performance of storage is improved.
Owner:INSPUR SUZHOU INTELLIGENT TECH CO LTD

Network coding and path protection-based optical network single-link fault protection method

The present invention relates to a network coding and path protection-based optical network single-link fault protection method. According to the method, a 1+1 path protection and network coding-combined method is adopted, relay nodes are responsible for network coding; when overflow occurs on the buffer of a certain pair of nodes, a data packet which has been buffered for the longest time is transmitted along a protection path, and a 1+1 path protection method is used; and the packet header of the data packet is provided with an identification bit which is used for indicating whether the data packet has been subjected to network coding, if the identification bit is 1, it is indicated that the data packet has been subjected to network coding, and the identification bit is 0, it is indicated that the data packet has not been subjected to network coding, and a destination node receives the data packet transmitted along the protection path, reads packet header information, judges whether the data packet has been subjected to network coding and performs corresponding processing. With the network coding and path protection-based optical network single-link fault protection method of the invention adopted, the normal transmission of data in a network can be ensured when a single-link fault occurs on network links, and redundant data packets generated in the network due to a protection mechanism can be decreased.
Owner:TIANJIN UNIV
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