How to avoid the impact of wireless transmission delay

When it comes to wireless transmission, people have subconsciously questioned the problem of high speed and delay. In fact, the speed of wireless transmission is not slow, and wireless transmission technology is changing with each passing day. Problems with high wireless latency can be solved through technical problems.

Wireless transmission is often a system, and the details that make up a wireless transmission system can cause delays. In the process of using the wireless video surveillance system, it is found that the problem of delay may be that the bandwidth is insufficient and high-definition video monitoring equipment is adopted. Or that bandwidth is not good enough.

Wireless video surveillance systems generally include three major parts: front-end monitoring equipment, mid-range transmission equipment, back-end control, and storage equipment. Therefore, we need to tackle the problems in these three major groups.

Performance impact of the front-end surveillance camera: If the CPU power of the surveillance camera or the overall system response of the surveillance camera is insufficient, this can cause delays.

Solution: In the case of fixed bandwidth, high-definition video that requires 1080P/60 frames to be transmitted requires some specialized video processing chips to increase the compression ratio of video encoding, which can effectively reduce the volume of data that needs to be transmitted and reduce delays. To be more straightforward, finding a reliable camera requires excellent processing chips and encoding compression capabilities!

Performance Impact of Wireless Transmission Equipment: The performance problems of wireless transmission equipment are the main cause of most of the delays. As we all know, network cables are divided into several classes. Different levels of networks will exhibit different transmission performance. The wireless transmission equipment is more complicated than the network cable, and the CPU processing performance, the matching system speed, the quality of the antenna, and the like can all seriously affect the transmission speed.

Solution: Choose an antenna with a sufficiently large gain. At present, it is preferable to select a wireless transmission device with a sufficiently high bandwidth and a sufficiently good chip processing capability to select different types of devices according to different environments and applications.

Performance impact of the switch: In some wireless video surveillance systems with many monitoring points, the switch will generally play the role of line integration. With the increase of surveillance cameras, the network traffic that the switch needs to deal with will also increase. Therefore, if the processing capacity of the switch is insufficient, delays, dropouts, and the like will easily occur.

Solution: Find a reliable switch. There are many types of switches, both for civilian and industrial use, so don't be fooled when buying a switch. Find a switch that matches your project.

The performance impact of the decoder : The decoder is used for video resolution. Sometimes the video is transcoded according to needs during the transmission process. In the latter stage, the decoder needs to be used for decoding. If the decoding speed of the decoder is insufficient, it will cause delay.

Solution: Find a reliable decoder. Although the decoder accounts for a small part of the delay problem, we cannot ignore it. Yours is not necessarily good. Cheaper is not necessarily worse. We do not blindly pursue expensive equipment when we choose a decoder. This applies to other devices. We need to find suitable decoders that match our previous surveillance cameras and wireless transmission devices. This option can ask your wireless video system provider.

The number of jumps in the transmission process: The more jumps, the more losses will occur and the greater the delay.

Solution: We should choose the path with the least number of jumps when designing the wireless transmission scheme. In addition, we also need to find some devices that have less loss in the jump process, that is, a three-mode wireless bridge with few jumps. It is commonly used in MESH networks with more jump nodes.