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Video stream Qos control method for broadband trunking call service

A technology for calling services and broadband trunking. It is applied in the fields of digital video signal modification, electrical components, and image communication. It can solve the problems of slow speed and limited LTE capacity, and achieve the effect of rapid refresh.

Inactive Publication Date: 2016-08-31
SHENZHEN ZTE TRUNKING TECH CORP
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0013] Another object of the present invention is to provide a video stream QoS control method for broadband trunking call service. The method performs congestion control and network monitoring by dynamically adjusting the video code stream in real time, and can solve the problem of LTE capacity limitation and more access users. The slower defect

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  • Video stream Qos control method for broadband trunking call service
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  • Video stream Qos control method for broadband trunking call service

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Embodiment Construction

[0053] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0054] The following uses full-duplex video single call and same-source video group call as examples to illustrate the steps.

[0055] Step 1. Find the optimal encoding parameter combination according to the test results, and divide the encoding parameter combination table for the three resolutions (cif, vga, and 720p) used by the current video, as shown in Table 3, where the frame rate unit is fps, and the code The rate unit is kbps.

[0056]

[0057] table 3

[0058] According to the test results, divide the packet loss rate and the corresponding relationship table of encoding parameters, as...

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Abstract

The invention discloses a video stream Qos control method for broadband trunking call service. As for an I-frame request (IR), the minimum transmission interval for a key frame is defined, and the I-frame request exceeding the frequency is discarded and not processed; and as for a receiving report (RP), a receiving end periodically transmits the received packet number and the discarded packet number, after a calling side receives the report, a video stream transmission code rate and a frame rate are dynamically adjusted according to the packet discarding condition, and the resolution remains unchanged. Problems of blocked and paused videos and a broken screen caused by network coverage, packet discarding, error codes and the like in B-Trunc single call and group call can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of multimedia real-time video, in particular to a video stream Qos control method for cluster video calls in an LTE broadband cluster system. Background technique [0002] The trunking system is an efficient wireless communication system that supports a large number of wireless users for group communication with a small number of wireless channels by sharing wireless channels. [0003] With the rapid development of wireless LTE broadband technology, the broadband trunking system B-TrunC based on LTE broadband technology also emerges as the times require. The broadband LTE technology provides a larger channel capacity for the trunking system, thereby providing the trunking system with a broadband trunking service scheduling. strong support. [0004] The B-TrunC standard was formulated by CCSA. Based on LTE technology, it adopts advanced downlink shared channel technology to support point-to-multipoint transm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/115H04N19/146H04L29/06
CPCH04L65/80H04N19/115H04N19/146H04L65/613
Inventor 董新平尹尚国余西王小平
Owner SHENZHEN ZTE TRUNKING TECH CORP
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