39results about How to "Implement congestion control" patented technology

The invention relates to a video wireless transmission control method suitable for CDMA2000, which comprises the following steps: (1) taking CDMA2000EVDO as a wireless access mode; (2) packaging H.264 video streams again based on the real-time transport protocol (RTP); (3) introducing an RTCP feedback mechanism to realize congestion control: 3.1) acquiring video data packets by a receiving terminal from a sending terminal; 3.2) judging the current state of the network by adopting the RTP / RTCP at the receiving terminal, and feeding the state back to the sending terminal in a form of a receiving terminal report; and 3.3) adjusting the video transmission rate by the sending terminal by adjusting the video resolution and the frame rate; and (4) realizing real-time interconnection of any equipment terminal to any monitoring point by adopting a mode of point-to-point interconnection. The invention can be effectively suitable for transmitting real-time videos in an unstable wireless channel with low bandwidth, high error code and high delay.

The present invention discloses a CoMP-based congestion control method. The method includes: the primary cell integrates itself and the primary cell according to the air interface resources needed to relieve the current congestion, and the channel quality information and remaining air interface resources of itself and each cooperative cell. The air interface resources of each coordinated cell, and adjust the resource scheduling of itself and each coordinated cell. The present invention also discloses a congestion control system based on CoMP. The present invention does not need to tear down the UE service, nor does it reduce the QoS of the UE service, and does not require the participation of the UE. The air interface congestion control of the CoMP LTE-A system can effectively improve the overall throughput of the system.

The present application discloses a data transmission rate control method, system and user equipment. The method includes: S1, receiving and storing the data packets sent from the external terminal to the local terminal; S2, respectively reading the data packets received in the local terminal within the preset time before and after the latest code rate adjustment, and recording the read data The corresponding number of packets; S3. Judging the current code rate adjustment state, and entering the increase / decrease code rate processing flow according to the first judgment result; wherein, the increase / decrease code rate processing flow includes performing the process according to the read data packets and the corresponding number Rate adjustment status update. In this application, there are few statistical information data transmitted between the external terminal and the local terminal, and the current bandwidth can be calculated accurately and quickly, and the code rate can be adjusted in time, so that congestion control can be well realized.

A congestion control method, terminal, and computer-readable storage medium provided by an embodiment of the present invention, the method includes: acquiring measured values ​​of congestion parameters on multiple carriers; and selecting the The first type of carrier where the terminal is currently sending services and is congested; reselecting a carrier for the service packet sent by the terminal on the first type of carrier, and / or, adjusting the terminal on the first type of carrier The size of the business package. The present invention can realize congestion control based on carrier adjustment or segmented service package adjustment under multi-carrier, and improve the reliability of service package transmission.

Embodiments of the present disclosure relate to methods and devices for congestion control. Specifically, the embodiments of the present disclosure relate to methods implemented at network devices and terminal devices, and corresponding network devices and terminal devices. For example, a method implemented at a network device includes receiving a first congestion level report from a first terminal device located in an area of ​​a cell of the network device, the first congestion level report indicating that the first a first estimated congestion level of a resource pool assigned by the network device to the area as determined by the terminal device; determining a congestion level of the resource pool based at least in part on the first estimated congestion level; and broadcasting an indication of the The congestion level information of the congestion level is provided for the second terminal device located in the area to receive, wherein the second terminal device cannot directly estimate the congestion level of the resource pool.

The invention discloses a congestion control method and device for a multi-stage CLOS system, and relates to the technical field of congestion control of the CLOS system. The congestion control method includes: determining the type of congestion control that the CLOS system needs to perform, and if it is global congestion control, making a corresponding response according to the GCI indication generated by the system, and controlling the overall Congestion; if it is routing congestion control, respond accordingly according to the RCI indication generated by the system, and control routing congestion by reducing unicast traffic; if it is link congestion control, according to the LLFC indication generated by the system, by reducing valid data to control link congestion; when it is determined that congestion control needs to be continued, the above steps are performed cyclically. The invention can prevent the working efficiency and performance of the CLOS system from being reduced due to the occurrence of congestion, thereby maintaining the overall dispatching ability and performance of the system.

The embodiment of the invention discloses a congestion control method and an Internet of Things platform, and the method comprises the steps of enabling the Internet of Things platform to be connectedwith a plurality of terminals, and determining an uplink control mode and / or a downlink control mode of at least one terminal in the plurality of terminals, wherein the uplink control mode comprisesenabling the Internet of Things platform to send an online time period in which the terminal can transmit the uplink information and a gateway capable of being accessed when the terminal transmits theuplink information, to the terminal, and the downlink control mode comprises enabling the Internet of Things platform to acquire the air interface paging capability of a base station connected with the terminal, judging whether the number of terminals to be paged by the base station exceeds the air interface paging capability of the base station or not, and judging whether the downlink information is issued to the terminal or not based on the judgment result. Through the scheme of the invention, the network congestion can be reduced, the success rate of data transmission is ensured, and the transmission efficiency of the network is improved.

The invention discloses a special data filtering method for eliminating denial-of-service attack to DNS (domain name system) service. The special data filtering method includes steps of firstly, capturing a network data sample of a DNS server; secondly, extracting characteristic attributes of the captured network data sample; thirdly, determining a time function which is a piecewise time function; fourthly, creating a training data matrix of a normal flow and a train data matrix of an attack flow according to the captured network data sample; fifthly, continuing capturing traffic data packets on the DNS server in real time, and classifying and detecting the traffic data packets by a Bayes classifier; sixthly, filtering classification results, judging whether a data flow is the attack flow or not, completely abandoning the data flow if the data flow is the attack flow, and adopting a filtering method based on classification probability according to the congestion condition of the DNS server if the data flow is the normal flow; and seventhly, turning to the fifth step to carry out the same process. By the special data filtering method, data are filtered and processed after the denial-of-service attack flow is detected, and influence of the denial-of-service attack on the DNS server is eliminated.

The invention is applicable to the vehicle network field, and provides a method for controlling DSRC resource allocation, a base station and a vehicle communication terminal. The vehicle communication terminal includes a dedicated short-range communication DSRC module and a cellular mobile communication module, the DSRC module and the cellular mobile communication module are connected through an interface; the DSRC module is used for wireless connection with DSRC modules in other vehicle communication terminals, Realize wireless communication between vehicles; the cellular mobile communication module is used to receive the control message of the resource allocation of the base station to the DSRC module, and forward it to the DSRC module through the interface, and forward the received DSRC module to the cellular mobile communication module through the interface The communication module receives the resource allocation request message sent by the cellular mobile communication module to the base station. The invention can realize the base station to control the resources of the DSRC, flexibly adjust the configuration parameters of the resources, realize the congestion control of the DSRC, and adjust the configuration according to the scene.

The invention discloses an adaptive MPTCP data scheduling method. The method includes that establishing a Markov model according to the congestion window of each subflow; calculating according to the Markov model to obtain the average congestion window size of each subflow; calculating according to the time stamp field to obtain the current round trip time value of each subflow; predicting according to the average congestion window size of each subflow and the round trip time value to obtain the average effective throughput on each subflow; dynamically adjusting the congestion window size of the minimum sub-flow according to the average effective throughput of each subflow to avoid the minimum sub-flow from congestion; and adjusting the slow start threshold according to the adjusted congestion window size to make the adjusted subflows at the congestion avoidance phase. The adaptive MPTCP data scheduling method overcomes the defects of the existing MPTCP data scheduling and congestion control technology, so that MPTCP can adaptively carry out more reasonable scheduling for network fluctuation and network isomerization, and the efficiency and reliability of multi-path data transmission can be improved.