34results about How to "Improve anti-packet loss performance" patented technology

The invention relates to a data communication technology and discloses a multilink tunnel message transmitting method and system. The technical scheme is that a virtual L2TP tunnel is configured for each link, and the links where the L2TP tunnels are established are bound and identified; various queues are initialized, and a sending main queue and a receiving main queue are established; when messages reach to the sending end, the messages of the sending main queue are numbered, and serial numbers of different L2TP message header identification messages are packaged after interfaces are selected according to load configuration; the bandwidth is calculated according to the packet loss ratio, and the sending rate of each link is adjusted according to the bandwidth. The multilink tunnel message transmitting system is composed of a sender and a receiver. The orderly transmission and anti-packet-loss capacity of links can be enhanced. The purposes of time delay equalization and service bandwidth widening are achieved by binding multiple links and reasonably adjusting the sending rate of each link.

The invention discloses a data transmission method and device, a terminal and a storage medium, and belongs to the technical field of networks. The method comprises the following steps of making voicecriticality analysis on to-be-transmitted audios; obtaining key levels of to-be-transmitted audio frames in the to-be-transmitted audios; according to current redundancy multiples and redundancy multiple factors corresponding to the key levels of the to-be-transmitted audio frames, determining the to-be-transmitted audio frames; obtaining correction redundancy multiples of the to-be-transmitted audio frames, copying the to-be-transmitted audio frames according to the correction redundancy multiple of each audio frame to be transmitted to obtain at least one redundant data packet, and sending the at least one redundant data packet to the target terminal, so that the anti-packet loss effect of the network can be improved under the condition of not causing network congestion.

The invention discloses a video sending method and device, a computer readable storage medium and electronic equipment, and belongs to the technical field of computer programs. The method comprises the steps of obtaining a video live program source; Encoding the video live program source to obtain a basic layer code stream and an enhancement layer code stream; Generating code streams correspondingto different playing image qualities according to the basic layer code streams and the enhancement layer code streams; When a playback instruction triggered by a user is received, determining targetplaying image quality according to a bandwidth condition of the user; And sending the code stream corresponding to the target playing image quality to terminal equipment corresponding to the user, sothat the terminal equipment outputs a video stream of the target playing image quality matched with the bandwidth condition after decoding the code stream. The device, the storage medium and the electronic equipment can be used for realizing the method. The method can be self-adaptive to the network environment of terminal equipment, one-time coding is adopted, the operation consumption and bandwidth consumption caused by multiple times of coding can be reduced, and the error reply and packet loss resistance of video transmission are also improved.

The embodiment of the invention discloses an image recovery method and device, and the method comprises the steps: obtaining a reference candidate frame according to the inter-frame similarity and thequality of a reconstructed image when determining that the image quality needs to be adjusted; and allocating bits to a target frame according to the reference candidate frame, and performing video coding on the target frame based on the bits allocated to the target frame. Therefore, the reference candidate frame is adaptively adjusted through the inter-frame similarity and the reconstructed image quality, so that the bit allocation of the target frame is adjusted, the network packet loss of the image frame is reduced, the packet loss resistance of the image is effectively improved, and the better image quality and fluency are obtained while the image is quickly recovered at the decoding end.

The invention discloses a device and method of sending and receiving speech frames. The device of sending speech frames comprises a calculating module which is used for, based on a first coding time delay of a first preset coding algorithm and a second coding time delay of a second preset coding algorithm, respectively calculating initial positions of coding synchronization of the first preset coding algorithm and the second preset coding algorithm; a coding module which is used for, based on the calculated initial positions, respectively employing the first preset coding algorithm and the second preset coding algorithm to code collected speech frames; and a sending module which is used for integrating and sending a current speech frame among the collected speech frames coded by the first preset coding algorithm and a previous speech frame among the collected speech frame coded by the second preset coding algorithm. According to the technical scheme of the invention, primary and secondary coding technologies can better adapt to different coding and decoding algorithms, such that the resistance to packet loss of speech transmission is enhanced while the time delay is low and the bandwidth cost is low.

The present invention relates to a dynamic FEC method, device, computer terminal and computer-readable storage medium. By obtaining the current network packet loss rate fed back by the receiving end, the current buffer delay and the current network bandwidth, the corresponding current weighting is calculated according to the current network packet loss rate. Network packet loss rate, when the current weighted network packet loss rate exceeds the first preset threshold, two-dimensional FEC is turned on, and the corresponding two-dimensional FEC redundancy is calculated according to the current weighted network packet loss rate and the current network bandwidth, according to The two-dimensional FEC redundancy and the current buffer delay generate the corresponding two-dimensional FEC repair package and send it to the receiving end. The two-dimensional FEC can be dynamically selected according to the weighted packet loss rate, which improves the anti-packet loss capability of the network data transmission process. An effective balance is achieved between the overhead and benefits of network bandwidth resources.

The present invention relates to data communication technology. The invention discloses a multi-link tunnel message transmission method and system. Note that the technical solution of the method of the present invention includes configuring a virtual L2TP tunnel on each link, binding and identifying the links with established L2TP tunnels; initializing various queues, establishing a total sending queue, and a total receiving queue ; When the message arrives at the sending end, number the messages in the total sending queue, select the outbound interface according to the load configuration, and encapsulate the serial number of the different L2TP message header to identify the message; calculate the bandwidth according to the packet loss rate, and Adjust the sending rate of each link according to the bandwidth. The invention simultaneously discloses a multi-link tunnel message transmission system composed of a sender and a receiver. The invention can enhance link orderly transmission and anti-packet loss capability. By binding multiple links, the transmission rate of each line is reasonably adjusted to achieve balanced delay and expand service bandwidth.

Disclosed in the present invention are an anti-packet loss method, device and system for use in real-time communication, and the method comprising: sending network packets to a receiving end, the network packet including encoded video frame data and FEC redundancy data, wherein corresponding FEC redundancy levels are determined for the FEC redundancy data; receiving feedback data sent by the receiving end after the network packet is resolved and restored; when the feedback data is packet loss feedback data, according to a current packet loss model, selecting an item of FEC redundancy data having an appropriate level from among the FEC redundancy data of a plurality of preset redundancy levels, and sending the same to the receiving end; in addition, when the feedback data is decoding error feedback data, according to the current decoding error model, obtaining an independently decodable frame corresponding to a decoding error frame, and sending the same to the receiving end. The present invention solves the problems in existing technology wherein the processing of the packet loss cannot meet the demands of high quality and low bandwidth at the same time, and the anti-packet loss capability is poor. The present invention enhances anti-packet loss capability in a real-time communication.

The present application relates to the field of communication technology, and in particular to a multi-person call control method, device, electronic equipment, and storage medium, respectively acquiring the sound signals of each uplink audio channel, wherein each uplink audio channel, downlink audio channel and call participation One-to-one correspondence between terminals; respectively determine the packet loss rate of each uplink audio channel; determine the mixing contribution of each uplink audio channel according to the participation of each sound signal in the downmix signal of each downlink audio channel degree; according to the packet loss rate and the mixing contribution of each upstream audio channel, respectively obtain the target repetition multiplier of each upstream audio channel, so that, in combination with the packet loss rate and the mixing contribution, determine the final The target repeats multiple multiples, realizing the reduction of bandwidth consumption while ensuring the call quality of multi-person calls.

The embodiment of the invention provides a data processing method and device and a computer readable storage medium. The method comprises the following steps: acquiring the ith multimedia data to be transmitted; when i is greater than 2, acquiring the i-1-th packet loss rate and i-2-th packet loss level; obtaining ith packet loss level according to the i-1-th packet loss rate, the i-2-th packet loss level, and fast increasing and slow decreasing relation between preset adjacent packet loss levels and a mapping relation between the preset packet loss level, the packet loss rate, the number of data packets and the number of redundant packets, and further determining the number of the ith data packets and the number of the ith redundant packets corresponding to the ith packet loss level; encoding the ith multimedia data to be transmitted according to the number of the ith data packets and the number of the ith redundant packets to obtain an ith data packet and an ith redundant packet; andsending the ith data packet and the ith redundant packet to a receiving terminal.

The invention provides a method and a device for data processing. The method comprises: receiving a media packet and an erasure packet corresponding to an M-th erasure frame; adding the received mediapacket to a first cache queue; adding the received erasure packet to a second cache queue; adding the erasure packet to a second cache queue; and adding the erasure packet to a second cache queue; judging whether the media packet in the first buffer queue and the erasure packet in the second buffer queue satisfy a preset condition when the K-th media packet is detected to be lost; restoring the K-th media packet and are added to the first buffer queue by means of a media packet in that first buff queue and an erasure packet in the second buffer queue when the preset condition is satisfied; when detecting that the media packets corresponding to the M-th erasure frame are received completely, organizing the media packets corresponding to the M-th erasure frame in the first buffer queue intovideo frame data. The invention realizes the recovery of the packet loss, reduces the redundancy of the data, improves the ability of resisting packet loss, and improves the real-time property of video transmission and the quality of video viewing.

The present invention provides an anti-packet loss method, device, storage medium and electronic equipment for an unreliable network, wherein the method includes: determining a plurality of first valid data packets containing corresponding first numbers, and sending them to the The first target device sends the first valid data packet; if the first packet loss rate fed back by the first target device is obtained, a plurality of second valid data packets containing the corresponding second numbers are determined according to the first packet loss rate, and sent according to the The second valid data packets are sequentially sent to the first target device. In this embodiment, the data packets sent to the target device contain sequentially generated numbers, so that the target device can calculate the packet loss rate in real time, and then the server can adjust the encoding strategy in real time based on the packet loss rate, so that dynamic encoding can be realized according to the network status , improve the ability to resist packet loss, and ensure the quality of data transmission; in the unreliable network environment with high packet loss rate, it can also provide low-quality data.

The present invention is applicable to the technical field of data transmission, and provides a network adaptive anti-packet loss method, device and terminal equipment, including: receiving packet loss feedback information; wherein, the packet loss feedback information includes a packet loss rate; if the If the packet loss rate is greater than a preset value, then adjust the redundancy of forward error correction coding FEC and / or the interleaving depth of interleaving coding until the redundancy reaches the first threshold and / or the interleaving depth reaches the second up to the threshold; after the redundancy reaches the first threshold and / or the interleaving depth reaches the second threshold, if the packet loss rate is still greater than the preset value, then adjust the message length until the message length until the third threshold is reached. In the case of poor network quality, the embodiments of the present invention can adjust multiple parameters, that is, first adjust FEC redundancy and / or interleaving depth, and then adjust message length, thereby enhancing the anti-packet loss capability of the system.

Embodiments of the present application provide a message processing method, device, and computer-readable storage medium, which relate to the technical field of audio and video real-time communication. Wherein, the message processing method includes judging whether there is a packet loss problem in the message transmission carried out within the preset time length according to non-retransmission messages in a plurality of RTP messages received within the preset time length; When the problem occurs, the first packet loss number is determined according to the packet sequence numbers of the non-retransmitted packets in the plurality of RTP packets, and the first packet loss number refers to the packet transmission carried out within the preset duration the number of lost RTP packets; feeding back the first RTCP packet carrying the first packet loss number to the second terminal, so that the second terminal determines the first packet sending amount according to the first packet loss number, and sending an RTP message to the first terminal according to the first packet sending amount. The application can improve the accuracy of the calculated packet loss number.