Method and system for realizing frame buffer packet loss compensation based on Linux kernel

A frame buffer and core technology, applied in transmission systems, digital transmission systems, error prevention/detection using return channels, etc., can solve problems such as unrealized technology, achieve high-efficiency streaming media processing capabilities, and improve packet loss exception handling capabilities Effect

Active Publication Date: 2017-03-08
FUJIAN STAR NET WISDOM TECH CO LTD
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Problems solved by technology

But in some packet loss compensation, related technologies are not implemented

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  • Method and system for realizing frame buffer packet loss compensation based on Linux kernel
  • Method and system for realizing frame buffer packet loss compensation based on Linux kernel
  • Method and system for realizing frame buffer packet loss compensation based on Linux kernel

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Embodiment Construction

[0027] The core of the existing MP processes messages mainly based on bridging. The main task is pure forwarding. The original module does not support frame buffering (where a message is called a frame). There is a certain upper limit for the cache of this message, because if it is not controlled, the memory usage will be very large. When the upper limit is reached, the oldest packet will be discarded. After the NACK request comes down, the application layer will notify the kernel to let the kernel do the retransmission work.

[0028] See Figure 1 to Figure 3 As shown, a method for compensating for frame buffer packet loss based on the Linux kernel is applied in a server IPPBX. The method is: after two phones establish a connection with the server IPPBX, the two phones generate a corresponding one RTP session processing instance slave, when two phones are in conversation, a bridging method is established between two RTP session processing instance slaves;

[0029] Establish a...

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Abstract

The invention provides a method for realizing frame buffer packet loss compensation based on a Linux kernel. The method is used in a server IPPBX, and the method comprises the following steps: after two phones establish connections with the server IPPBX, the two phones separately generate a RTP session processing instance slave, and the two phones establish a bridging mode between the two RTP session processing instance slaves during a session; and a kernel message buffer is established between the two RTP session processing instance slaves in an MP kernel of the server IPPBX, a RTP buffer mechanism is added, and the frame buffer packet loss compensation is realized by a RTCP request of NACK. According to the method provided by the invention, by means of the combination of NACK packet loss compensation, the packet loss abnormality processing ability of streaming media is further improved; and efficient streaming media processing ability is achieved.

Description

Technical field [0001] The invention relates to the technical field of communication equipment, in particular to a method and system for realizing frame buffer packet loss compensation based on a Linux kernel. Background technique [0002] In the existing communication network, the use of server IPPBX has become very popular. Many corporate offices use ippbx to replace the traditional user-level switch pbx to realize audio or audio and video communication, which greatly improves office efficiency and reduces communication costs. [0003] At present, the access to the mainstream communication core network is undertaken by equipment such as the IPPBX and the access equipment IAD. And because of the pressure of communication, theories of active and standby systems, load balancing, media server independence, business control and call control separation have been proposed. It can be said that the service concept of communication integration is only reflected at the user level, and the n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/861H04L1/16
Inventor 洪剑平陈锦辉
Owner FUJIAN STAR NET WISDOM TECH CO LTD
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