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LTE-based video transmission code rate adaptive method and device

A video transmission, self-adaptive technology, applied in the direction of closed-circuit television system, etc., to achieve the effect of large changes in wireless channel bandwidth

Inactive Publication Date: 2019-01-01
POTEVIO INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is: how to meet the requirements of video transmission and effectively use the transmission network bandwidth under the complex application situation of real-time video wireless transmission with dynamic changes in concurrent numbers and wireless bandwidth fluctuations

Method used

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  • LTE-based video transmission code rate adaptive method and device
  • LTE-based video transmission code rate adaptive method and device
  • LTE-based video transmission code rate adaptive method and device

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Embodiment

[0088] The present invention is described below with a specific embodiment, but the protection scope of the present invention is not limited. refer to image 3 , the method includes the following steps:

[0089] Step 101, receiving and storing the imported address mapping table between the IMSI and IP address of the target cell;

[0090] Step 102: Obtain the current bandwidth and current active user information in the target cell transmitted by the base stations eNB1-eNBw (w is an integer not less than 1), the current active user information includes: the communication device currently in the active state IMSI (that is, the IMSI list in the figure);

[0091] Step 103: Search the address mapping table according to the current active user information to obtain an IP address set corresponding to the current active user information;

[0092] Step 104: Send the IP address set to the video control center, and receive the number of video monitoring channels and the current video t...

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Abstract

The invention discloses a video transmission code rate self-adaption method and a video transmission code rate self-adaption device based on LTE (Long Term Evolution), and relates to the technical field of wireless video monitoring. The method comprises the steps of S1, acquiring the current bandwidth and current activated user information in a target cell; S2, determining the total number of video monitoring paths according to the current activated user information; and S3, calculating the optimal video transmission code rate according to the current bandwidth and the total number of video monitoring paths, and adjusting the video transmission code rate of each video monitoring device in the target cell according to the optimal video transmission code rate. According to the invention, the optimal video transmission rate is calculated so as to carry out adjustment on the video transmission code rate of each video monitoring device, thereby not only being capable of meeting requirements of video transmission, but also being capable of effectively utilizing the wireless network bandwidth. The method and the device disclosed by the invention are applicable to LTE based wireless video remote monitoring, and are particularly applicable to application scenarios such as subways, high-speed rails and the like where the real-time video transmission concurrence is great in fluctuation is great and the wireless channel bandwidth is high in variation.

Description

technical field [0001] The invention relates to the technical field of wireless video monitoring, in particular to an LTE-based video transmission code rate adaptive method and device. Background technique [0002] The high bandwidth advantage of Time Division Long Term Evolution (TD-LTE) breaks the contradiction between the mobility and definition of video surveillance, and starts the wide application of high-definition wireless video surveillance. When using TD-LTE wireless network for video surveillance, due to the limited communication channel bandwidth, it is necessary to control the video transmission bit rate to ensure smooth video transmission and full utilization of channel bandwidth. The current research direction mainly focuses on video coding compression technology and a small amount of congestion control technology based on bandwidth prediction. [0003] Great progress has been made in video coding and compression technology. H.264 has an efficient coding algor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/18
Inventor 龙智勇周玉成
Owner POTEVIO INFORMATION TECH CO LTD
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