31results about How to "Reduce interaction overhead" patented technology

Embodiments of the invention disclose a file writing method which is applied to a file access client. The method comprises the following steps: receiving a write request sent by an application program, wherein the write request is used for requesting to write to-be-written data in a target file; obtaining metadata of the target file from a local database, wherein the metadata at least comprises fragment position information of the target file; and writing the to-be-written data into a corresponding data server according to the fragment position information. The embodiments of the invention furthermore provide a file reading method, a file deletion method, a file query method and corresponding equipment.

The invention discloses a heterogeneous service QoS based LTE network inter-cell interference ordination method and solves the problem of low throughput of cell-edge users. The method comprises the steps of: (1) demarcating a service cell and defining business type, (2) giving the source block number for each type of business, service priority and maximum delay, (3) sequencing the source blocks in a system band, (4) demarcating a common frequency pond from the sequenced system band, (5) calculating the edge business load index through each cell and determining the demarcating method of the common frequency, (6) regionalizing the center of the cell and defining the source allocation index for each region and (7) allocating the source block to the edge user through each cell and then allocating the source block to the center user according to the source allocation index. The method of the invention can adapt to the change of cell edge business, decrease the signaling expense, and increase the throughput of the cell edge and the whole throughput of the system.

The invention discloses an interference management method under partial channel state information in an uplink. The method mainly solves the problem in the prior art that a resource distribution method is great in information interaction cost and an association control method is low in convergence speed. The method comprises following steps that: 1) a macro base station carries out association control to all users by a history subgradient descent method; 2), a home base station distributes resources to every user associated with the home base station according to a constructed home user utility function; 3), the macro base station firstly selects a reference home base station for every user associated with the macro base station and then distributes resources to every user associated with the macro base station according to a constructed macro user utility function. In application of the method, the cross layer interference and the information interaction cost are reduced; meanwhile, the system throughput and the convergence speed of the association control are improved; and the method is applicable to a macro base station and home base station coexisting heterogeneous wireless network.

The invention provides a terminal identifier distribution method and a communication system. The method comprises the following steps that: A, a base station distributes a plurality of terminal identifiers from a self maintained terminal identifier resource pool to trunk equipment; and B, after receiving access request of a user, the trunk equipment selects one of the plurality of terminal identifiers and distributes the terminal identifier to the user. Because of the trunk managed and distributed terminal identifier, the access time delay of the user can be effectively shortened, and the signaling interaction expense can be reduced.

The invention relates to a resource request method, a DHCPv6 server and a resource allocation system. The method includes a DHCPv6 server of the sixth version of the Dynamic Host Configuration Protocol sending a first notification message to a DHCPv6 client, the first notification message carrying a first resource status indication; the first resource status indication carrying a specified A status code indicating that no resources are available within the time; so that the DHCPv6 client sends a resource request message after the specified time. The present invention carries the specified time in the notification message, so that the client sends the solicit message after the specified time; reduces unnecessary message interaction overhead between the client/server, reduces network bandwidth load, and avoids constant Handle a large number of invalid request packets to relieve server processing pressure.

A key generation method and equipment are disclosed, the method comprising: after a terminal completes initial registration authentication, an AUSF generates an authentication and key management for applications (AKMA) intermediate key KAKMA and generates a key identifier of the KAKMA according to an AUSF key KAUSF and preset parameters generated in the initial registration authentication of the terminal. According to the key generation method and equipment provided by the embodiment of the invention, the RAND sum in an authentication vector is used as an input parameter, so that the freshness and the replay attack resistance of the intermediate key are improved, and the freshness and the replay attack resistance of the application layer session key deduced by the AKMA intermediate key are improved. Besides, the key identifier of the intermediate key in the embodiment of the invention is synchronously generated with the intermediate key after the terminal is successfully authenticated for the first time, so that the signaling interaction overhead in a mode of generating the key identifier as required can be reduced.

The invention discloses a multi-cell collaborative large-scale MIMO robust precoding design and distributed processing method. The method comprises the following steps: (1) establishing a posterior channel model of a user; (2) establishing an interference and noise covariance model of a user and a covariance model of a received signal; (3) establishing a traversal rate model or a traversal rate upper bound model of the user; and (4) solving a weighted traversal and rate maximization problem or a weighted traversal and rate upper bound maximization problem to obtain a precoding iterative formula. According to the robust precoding design, the influence of channel estimation errors, channel aging and channel correlation on precoding can be resisted by establishing the posterior channel model of the user, and the problem of weighting and rate maximization is solved by modeling user interference and noise including inter-cell interference. The invention discloses three distributed processing methods with different information interaction quantities, and specifically realizes a multi-cell collaborative large-scale MIMO robust precoding design.

The invention relates to an IP address allocation method and device, equipment and a medium. The method comprises the following steps: receiving a session establishment request sent by first user equipment; the session establishment request comprises subscription information of the first user equipment; judging whether the subscription information contains a static address or not; if the first user equipment contains the static address, allocating the static address to the first user equipment under the condition that the static address belongs to a pre-planned address range; if the first user equipment does not contain the static address, selecting a target address attribute according to the session establishment request or subscription information, and performing dynamic address allocation on the first user equipment based on the target address attribute and a first address pool; wherein the first address pool is a pre-configured address pool matched with the target address attribute. According to the invention, the signaling overhead can be reduced, and the address allocation efficiency and stability can be improved.

The invention discloses a millimeter wave MIMO user incremental cooperative beam selection method based on wide learning, which comprises the following steps that: aiming at the downlink beam selection problem of a multipoint cooperative millimeter wave large-scale MIMO scene, each user collects downlink wide beam response and transmission narrow beam response, trains a local wide learning network, and transmits the downlink wide beam response to the local wide learning network; and beam selection is carried out based on the predicted narrow beam response. Furthermore, the training problem of the local network of each user is modeled into a distributed optimization problem with consistency constraint, and effective sharing of training data can be realized by utilizing D2D communication between adjacent users. Furthermore, an incremental updating mode of the local network of the user in the cooperation mode is designed, so that the training complexity of the network can be effectively reduced. According to the method, the capability of mining the relationship between the multi-base-station wide beam response and the transmission narrow beam response under the small sample condition of distributed wide learning is fully utilized, and low-complexity and low-overhead beam selection of the fast time-varying scene multipoint cooperation millimeter wave large-scale system can be realized.

The embodiment of the invention provides a cluster creation method and device, equipment and a storage medium, and the method comprises the steps: obtaining a cluster definition file, and obtaining a component installation list, a node equipment group corresponding to the component installation list, and node equipment in the node equipment group from the cluster definition file; controlling the node equipment in the node group to install the components in the component installation list; and sending the configuration content of the components in the cluster definition file to the node equipment, so that the node equipment configures the components based on the configuration content. According to the technical scheme provided by the embodiment of the invention, the rapid creation of the cluster can be realized, and the interaction overhead of cluster creation can be reduced.

A base station-user networking mode in a UDN network is used for the following scenarios: a communication system comprising a plurality of base stations and a plurality of users divides the base stations into different clusters, and the users in the clusters adopt a zero-forcing precoding scheme to perform downlink transmission. The method is characterized by comprising the following two operationsteps: (1) a base station clustering stage: taking geographical coordinate information of base stations as input, dividing the base stations into different clusters by utilizing a mean vector offsetalgorithm, and ensuring that the base stations with closer geographical positions are in the same cluster; and (2) a user network access stage: after the base stations are clustered, the base stationsin the same cluster send the same reference signal, the user receives and calculates a reference signal power value, and when an antenna constraint condition is satisfied, base station-user cooperation finds a network access mode which maximizes the sum of user reference received power values through a greedy algorithm. Compared with the traditional clustering method, the base station clusteringmethod provided by the invention has the advantages that the result is more stable and effective, and the practicability is higher.

The embodiment of the invention provides a configuration method, device and system, computing equipment and a storage medium. The configuration method is applied to a distribution end, and comprises the following steps: acquiring a first configuration request which is triggered by a user, aims at a distributed system and comprises first configuration information; detecting whether the first configuration information is valid; if the first configuration information is valid, forwarding the first configuration request to a distributed coordination service cluster, so that the distributed coordination service cluster updates the configuration information in a disk based on the first configuration information; and sending a second configuration request to a target execution end, wherein the second configuration request is used for indicating the target execution end to configure the distributed system by using the first configuration information in the disk. According to the technical scheme provided by the embodiment of the invention, the configuration efficiency of the distributed system can be improved.