45results about How to "Reduce the number of retries" patented technology

The array directivity switching determination unit 114 stores the reception quality information output from the separation unit 113, and determines whether to change the array directivity or beam width of the transmitting antenna based on the reception quality information, and determines whether to perform or not to change the transmitting antenna according to the determination result. The instruction of array directivity or beam width is output to the array directivity switching control unit 115 . When an instruction to switch the array directivity or beam width of the transmitting antenna is output from the array directivity switching determination unit 115, the array directivity switching control unit 115 calculates The weights transmitted by each antenna are output to the transmission array directivity control unit 105, and an instruction to change the array directivity or beam width of the transmission antennas is output.

The invention relates to a random access collision retreat wince method which includes: a judge threshold Pi is generated according with an access reason of random access and system load; a terminal automatic generates the random number Ri when ready to access, and selects processing access or retreat according with a compared result for the Ri and the judge threshold Pi. The retreat method not only makes the random access process be distinguished according with various trigger random access operation for realizing quantitatively managed among various operation; but also the quantitatively is completed accurately amended by the system parameter. The collision event is developed in time domain in location with larger random access load for reducing high collision probability initiated by high random access load region user.

The invention provides a random access collision retreat method, comprising: the step S102, classifying service of triggering the random access operation, and distributing threshold values to the classified service, performing random access operation according to the threshold values by user terminals, wherein the step S104 comprises: the step S104a, the user terminals generates random number, and compares the random number with the threshold values, and the step S104b, the user terminals randomly select a signature code from available random access signature code aggregate and transmit to the network side to perform random access operation, when the comparing result of the random number and the threshold values satisfies the scheduled requirement; when the comparing result of the random number and the threshold values does not satisfy the scheduled requirement, returning to the step S104a.

The invention discloses a cell selection method which comprises the following steps: a network side notifies user equipment of the information of occupied code resources in various cells; and the user equipment selects a target cell according to the channel quality and the information of occupied code resources in each cell. Besides, the invention further discloses a system for cell selection, which comprises network side equipment used for notifying the user equipment of the information of occupied code resources in each cell, and the user equipment used for selecting the target cell according to the channel quality and the information of occupied code resources in each cell. The technical scheme can increase the rate of success in cell access or cell switch.

The embodiment of the invention discloses a resource allocation method and device. The resource allocation method comprises the following steps: receiving a resource request sent by a client; taking out target resource data from a preset cache, wherein the operation of the preset cache has the atomicity, and the preset cache stores resource data read in advance from a database; and returning the target resource data to the client. Through the resource allocation method and device, the query pressure of the database can be reduced, and the concurrency performance of the system can be improved.

The invention relates to a method for remotely updating node firmware in a batched manner. The method for remotely updating the node firmware in the batched manner specifically includes the following steps that: a gateway node receives firmware update instructions transmitted by an upper computer and the IDs of selected nodes; received firmware update instructions and the IDs of selected nodes are continuously transmitted until all selected nodes enter a firmware update pattern in a set duration or the set duration is exceeded; and firmware update packets are broadcasted one packet by one packet, and whether the nodes under the firmware update pattern successfully receive the firmware updating packets is monitored, and once a node which does not successfully receive the firmware updating packets, a work pattern return instruction is transmitted to the node. With the method for remotely updating the node firmware in the batched manner provided by the invention, the failure of the update of node firmware can be timely found, and the node can be made to return to a work pattern instantly.

The invention relates to the technical field of computers, and particularly relates to a traffic control method, system and device, and a computer readable storage medium. According to the method, thecurrent number of tokens is compared with a required transmission bandwidth, when the bandwidth is sufficient, a compression algorithm with a low compression rate is adopted to reduce the loss of data information entropy, when the bandwidth is limited, a compression algorithm with a high compression rate is adopted to adapt to the effective transmission of the bandwidth, no priority differentiation or weight packet management needs to be performed on message streams with different delays, the problem of invalid fragments caused by the bandwidth limitation is avoided, the situation in the traditional abandoning mechanism that a large number of messages are directly abandoned and requested for retransmission, resulting in great jitter of the network transmission rate, is avoided, it is ensured that in a network with a variable packet length, when the data input amount is greater than the supervision traffic, the data packets with different lengths can pass at an equal probability without complicated overall scheduling, it is ensured that fragments transmitted on the link are all valid while accurately limiting the traffic, so that the message abandoning probability is reduced and even eliminated, and the times of message retransmission are reduced on the premise of making full use of the bandwidth.

The invention discloses a service addressing access method, device and system, equipment and a medium. The method comprises the steps that in response to a received request for a to-be-accessed service, an internet protocol IP exit address of an enterprise client and configuration information of the to-be-accessed service are acquired, and the configuration information comprises related information that the to-be-accessed service is deployed on at least one service server according to the internet protocol IP address; a local cache related to the to-be-accessed service is searched according tothe IP exit address and the configuration information to obtain an addressing range, wherein the addressing range comprises a connection address corresponding to the to-be-accessed service determinedby the IP exit address; network access is performed for the connection address. According to the embodiment of the invention, the addressing range is searched in the local cache, and the network access is specified for the connection address in the addressing range, so that the delay time of the network access is effectively reduced, and the privacy of the enterprise client and the security of the network access are enhanced.

The invention discloses a route addressing method and device for selective transmission, belongs to the technical field of wireless communication and mainly solves the problem that in a wireless distributed network, the times of repeatedly forwarding route request messages is excessive. The method comprises the steps of determining channel information; determining neighbor nodes and the optimum hop distance of each node according to the obtained channel information; determining coverage range parameters Rs and Rb according to the optimum hop distance; adjusting the Rs and Rb according to demands and determining a connection relationship among the nodes according to the determined Rs and Rb, wherein the connection relationship comprises short distance direct connection, relay direct connection and indirect connection; and when the nodes send or forward the route request messages, detecting the connection relationship between current nodes and destination nodes, and determining that the route request messages are sent or forwarded to which nodes.

The invention relates to a Bluetooth communication method and a Bluetooth communication device. The Bluetooth communication method comprises the following steps: receiving a first Bluetooth frame sentfor the first time; determining first soft decision data based on the first Bluetooth frame; performing de-whitening processing on the first soft decision data to obtain de-whitened first soft decision data; receiving a retransmitted second Bluetooth frame, wherein the second Bluetooth frame and the first Bluetooth frame correspond to the same audio data but have different bit data due to whitening processing; determining second soft decision data based on the second Bluetooth frame; performing de-whitening processing on the second soft decision data to obtain de-whitened second soft decisiondata; and fusing the first soft decision data after de-whitening processing and the second soft decision data after de-whitening processing to obtain third soft decision data after de-whitening processing. Thus, when a Bluetooth device receives the Bluetooth frame retransmitted by an intelligent device for multiple times, the method can reserve more data information in the Bluetooth frame bit data and improve the accuracy of subsequent data judgment, thereby reducing the number of retransmissions of the Bluetooth frame in the air and improving the reliability of the system.

The invention provides a client routing updating method and a storage medium, and the method comprises the steps: a client obtains a routing address list and a version number of the routing address list through accessing a routing cluster before a client requests to access for the first time, and stores the routing address list and the version number locally; when the client requests to establisha long link with an access service according to the routing address list, the version number of the client is uploaded to the server; the server obtains a version number corresponding to the current routing address list from the redis cache cluster, and judges whether the version number is consistent with the version number sent by the client or not; and if not, the current routing address list isreturned to the client. According to the invention, the timeliness of updating the local routing address list of the client can be ensured, the retry frequency is greatly reduced, and the connectionefficiency is improved; at the same time, there is substantially no impact on the long link being established.

The invention belongs to the technical field of Bluetooth communication, and provides a Bluetooth data sending method and system and a Bluetooth transceiver. The method and the system adopt a linear grouping encoding / decoding method as an error correction mechanism for Bluetooth data transmission, and the linear grouping encoding / decoding method belongs to a forward error correction encoding / decoding method and can detect out a limited number of error codes and correct the error codes in a case that retransmission does not need to be carried out, so that times of data retransmission are reduced, communication quality is promoted, and relative to an existing retransmission mechanism, the method and the system improve the anti-interference capacity and increase a communication distance.

The invention discloses an interface calling failure retry method and system, electronic equipment and a storage medium, and the method comprises the following steps: SS1, taking out a message from a message queue, and calling a cloud interface; step SS2, judging whether the cloud interface is successfully called or not, if the cloud interface is successfully called, quitting and processing a next message, and if the cloud interface is failed to call, adopting an agging strategy; and step SS3, if the calling fails, re-sending the message to the message queue, and if the calling succeeds, returning to the step SS1 to process the next message. According to the invention, the data operation pressure of the cloud interface is reduced, the message which fails to be sent can be retransmitted, the retry times of invalid requests and failed requests are effectively reduced on the whole, and the data pressure of the cloud interface is reduced.

The invention discloses a flow control method and a monitoring end. The method comprises the following steps: the monitoring end performs real-time pre-judgment on a first data packet pre-transmitted by a data input end; the monitoring end transmits a suspending message to the data input end when pre-judging that the first data packet carries the risk of being discarded; and the monitoring end controls the data input end to transmit the first data packet according to the suspending message. Data packet transmission by the data input end is controlled through monitoring and pre-judging of the data packet transmitted by the data input end, thereby reducing and even eliminating the probability of data packet discard, and achieving the purpose of reducing the number of times of data packet retransmission on the premise of fully utilizing the bandwidth. High flexibility and precision are achieved.

The invention relates to a wireless digital image transmission protocol method. Protocols of A data link layer and a physical layer are defined in the 802.11 protocol, wherein the data link layer comprises LLC sublayer and MAC sublayer, the physical layer comprises PLCP and PMD layers; for guaranteeing the stable communication of the wireless, the control, management, and head and tail part and check and encryption and more information can be added when the protocol enters each layer. Through above protocol improvement, a 5dB omni-directional transceiving antenna is equipped in the transmission power of 200mW, and the wireless module of the 5G frequency point 802.11a protocol comparison on-the-spot survey is used as the example (the testing environment is Longganglongcheng Park, and the DJI PHANTOM3 unmanned aerial vehicle), and the effect is clear at a glance. Through the method disclosed by the invention, the video frame data size can be lowered, and the retransmission frequency canbe greatly reduced; the burden of the limited wireless bandwidth is reduced, the video transmission distance is longer, the image delay is avoided, and the definition is greatly improved.

The invention discloses an interface request frequency control method. The method comprises the following steps: S1, intercepting a request sent by a requester to a third-party interface service provider; S2, calculating the time interval between the current request initiation and the last request initiation, judging whether the interval is greater than or equal to a speed limit threshold, if yes, entering a step S4, and otherwise, entering a step S3; S3, suspending a request sent to a third-party interface service provider by the requesting party at present, setting recovery time, and entering the step S2 after the recovery time is reached; and S4, initiating a request to a third-party interface service provider. Through adding the request agency, the sent request frequency is controlled, the request frequency is sent to the third-party service provider at a reasonable frequency, mistaken interception is avoided, and the mistaken loss of the request frequency can be reduced.

The invention discloses a double-interface card capable of simultaneously processing data. The double interface card comprises a contact interface port, a non-contact interface port, a first latching buffer area, a second latching buffer area, a first AND gate, a second AND gate, a first connection circuit, a second connection circuit, a time clock circuit, a processor and a storage unit; a read-write control signal of the contact interface port is connected to a first input terminal of the first AND gate; the output terminal of the first AND gate is connected to the control terminal of the first latching buffer area; the read-write control signal of the non-contact interface port is connected to the fist input terminal of the second AND gate; the output terminal of the second AND gate is connected to the control terminal of the second latching buffer area; and the first connection circuit and the second connection circuit output opposite levels. The double interface card can control two latching buffer areas to perform time sharing buffering on data so as to achieve simultaneous reception and asynchronous processing, and guarantees that the data of two interfaces is not lost.