109results about How to "Reduce sending delay" patented technology

The invention provides a node network access method based on the distributed time division multiple access wireless ad hoc network. The node network access method comprises the following steps: (1) a new node sends network access request message in the wireless ad hoc network; (2) the existing node evaluates the network load condition per se and judges whether to send a network access permission message to the new node; (3) after receiving the network access permission message, the new node records route information reaching the source address of the message; (4) the new node analyses the received network access permission message, selects an acceptable mini time slot and sends a time slot receiving message for confirmation; (5) a node receiving the time slot receiving message in the network judges whether to release own redundant time slot and adds the route information reaching the new node; and (6) the network access process is completed. Through the node network access method, the utilization ratio of network resources is increased, the network access time delay of the new node is reduced, and the sending time delay of part of short-distance messages is reduced.

The invention discloses a data parallel interleaving method, terminal equipment and a computer storage medium. The method comprises the following steps: determining ROM1 for storing an RAM write address, ROM2 for storing an RAM read enable pattern and data parallel information corresponding to a processing unit through configuration information; in data writing, storing each bit of data in to-be-input data of which the maximum input parallelism degree is n into different RAMs in the same clock period; during storage, using the maximum output parallelism degree k as a basic storage unit and thus reading out each group of to-be-output data in sequence according to the head address of the ROM2 during reading; and finally, extracting effective data of OV bits from each group of to-be-output data according to the output parallelism degree OV required by the to-be-output data to finish data parallel interleaving. According to the method, different input parallelism degrees, output parallelism degrees and interleaved output parallelism degrees under various configurations can be compatible, the flexibility is improved, the data processing rate can be effectively increased, and the sendingdelay is reduced.

The invention provides a GPSR (greedy perimeter stateless routing) protocol based route optimization method and device. The method comprises following steps: step S110, a same-direction adjacent node list of an initial node is determined with an adjacent node classification algorithm; step S120, nodes in the same-direction adjacent node list are divided into a greedy forwarding area and a peripheral forwarding area; step S130,when nodes in the same-direction adjacent node list exist in the greedy forwarding area, a node deviating from a target node for the minimum angle in the greedy forwarding area is determined with a greedy algorithm and serves as a next-hop node of the initial node; steps from S110 to S130 are repeated until the node is circulated to the target node. With the adoption of the method and the device, the route selection speed can be increased, transmission delay of node data grouping is reduced, and the success rate of data grouping transmission is guaranteed; besides, the probability of a route arriving the target node through rapid positioning can be increased, and meanwhile, the optimal path of the route can be determined.

The invention discloses a method for sending broadcast messages in instant communication tools, which comprises the following steps: receiving a broadcast message task sending request sent by a service message server, wherein the request carries the sending area, the sending content and the sending starting time of the broadcast message; searching at least one task area corresponding to the sending area of the broadcast message; and sending the sending content and the sending starting time of the broadcast message to an area task server corresponding to the task area. Correspondingly, the embodiment of the invention provides a system for sending the broadcast messages in the instant communication tools, which comprises the service message server, a task unified control server and the area task server. The proposal provided by the embodiment sends the broadcast messages to all client users of the instant communication tools in time, reduces the sending delay of the broadcast messages, accurately controls the sending of the broadcast messages on time and area, and improves using experiences of the users.

The embodiment of the invention provides a scheduling request SR sending method and device. The method is applied to a media access control layer (MAC) entity at a terminal side, and comprises the following steps: when detecting that the MAC entity meets a preset pending SR sending condition, receiving a channel interception (LBT) success indication sent by a physical layer at the terminal side; and adding one to an SR counter, and sending the channel access priority parameter of the pending SR to the physical layer, so that the physical layer determines an LBT parameter according to the channel access priority parameter and executes LBT, and the physical layer sends the pending SR. The embodiments of the present invention solve the problem of how to send an SR in an unlicensed spectrum inthe prior art.

The invention relates to the technical field of computer application, in particular to a WiFi-ZigBee network-oriented cooperative transmission method, establishes a coexistence network cooperative transmission model, provides a dynamic convergence blank gap technology, and improves the communication efficiency by reasonably scheduling blank gaps generated in a WiFi network communication process, the data transmission of the ZigBee network in the heterogeneous network coexistence environment is ensured; a non-feedback network layer data coding technology is used, a WiFi AP is selected as a coordinator of a heterogeneous network, the number of data packets needing to be sent to the network is determined according to WiFi network communication flow in a period, data coding is carried out on the data, and when the number of the sent data packets reaches a threshold value, successful decoding feedback of a receiver does not need to be received, and the generation and the transmission of the data packet are stopped. According to the invention, ZigBee communication in a heterogeneous network can be protected from WiFi interference, the transmission delay of a data packet is reduced, the data packet receiving rate of the ZigBee network is increased, the asymmetry of a WiFi-ZigBee communication link is improved, and the transmission reliability is improved.

The embodiment of the invention discloses a spliced matrix display method and system. The method comprises the following steps: if a splicing matrix is composed of N * M display screens, the image processing equipment performing row or column cutting on the to-be-displayed image to obtain N row output images or M column output images, setting a refreshing time sequence of an output channel of eachrow output image or column output image, and controlling the output channel to output the row output images or column output images according to the set refreshing time sequence; the picture divideracquiring a row output picture or a column output picture, performing M times of column cutting on the row output picture to obtain M output sub-pictures or performs N times of row cutting on the column output picture to obtain N output sub-pictures, and sending the obtained output sub-pictures to a target display screen corresponding to the output sub-pictures; and the target display screen displaying the output sub-picture. By implementing the embodiment of the invention, the real-time performance of spliced display can be improved.

Provided are an information sending method, a random access method, a terminal device and a network side device. The random access method comprises: simultaneously performing clear channel assessment(CCA) on M first-listen then-talk (LBT) channels, where M is greater than 1; and sending the lead code information Msg1 on one idle LBT channel in the M LBT channels. Because CCA is carried out on theM LBT channels at the same time, the opportunity of grabbing idle LBT channels on an unauthorized frequency band is increased, the waiting time of the UE is reduced, and the random access time is reduced.