A wireless local area network adaptive wireless receiving method and device
A wireless local area network and wireless receiving technology, applied in wireless communication, network topology, electrical components, etc., can solve problems such as low bandwidth, loopholes, interference, etc., and achieve the effect of improving throughput
Active Publication Date: 2019-10-25
杭州吉吉知识产权运营有限公司
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Problems solved by technology
[0008] Reduce the AP transmission power to better use the limited channel, which requires reducing the number of devices sharing the same AP, which can improve performance, but reducing the transmission power will also reduce the received strength of the signal, which becomes a reduction At the same time, there will be holes in Wi-Fi coverage. These holes need to be filled with more APs, and increasing the number of APs will cause more interference
[0009] At present, in the WLAN system, the AP or terminal judges that the channel is idle by performing energy detection on the channel. This is done by testing the energy of the antenna port and determining the received signal strength RSSI. The current common practice is to detect that the energy of a certain channel is greater than CCA Threshold, the channel is considered to be busy, and the channel is not sent. When the energy of a certain channel is detected to be less than the CCA threshold, the channel is considered to be idle, and the channel is used to send. This method can automatically adjust the bandwidth mode when wireless signal interference is detected in the surrounding area. Channels are avoided, but channel reuse is low, available bandwidth is low and signal stability is poor
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[0039] The technical scheme of the present invention detects channel energy; compares the detected channel energy with the channel energy threshold; .
[0040] In order to make the technical problems, technical solutions and beneficial effects solved by the present application clearer, the present application 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 application, and are not intended to limit the present application.
[0041] figure 1 It is a schematic flow diagram of an embodiment of the wireless local area network adaptive receiving method provided by the present invention, and the specific flow is as follows:
[0042] Step S101, detecting channel energy;
[0043] Specifically, by detecting the channel energy, it is further judged according to the detection result whether to trigger wireless reception thro...
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The invention provides an adaptive wireless receiving method of a wireless local area network. The method comprises: channel energy is detected; the detected channel energy is compared with a channel energy threshold; and when the detected channel energy is determined to be less than the channel energy threshold, a receiving gain parameter value is adjusted to realize adaptive wireless receiving. In addition, the invention also provides an adaptive wireless receiving apparatus of a wireless local area network. Therefore, wireless local area network equipment can be triggered by the channel energy threshold according to the environment interference situation so as to adjust the receiving gain of the wireless signal dynamically; and thus the throughput capacity of the wireless receiving signal can be improved under the circumstance that the interference is large.
Description
technical field [0001] The present invention mainly relates to the technical field of wireless local area network wireless reception, in particular, to a wireless local area network self-adaptive wireless receiving method and device. Background technique [0002] WLAN technology is an RF technology that uses the ISM frequency band, mainly 2.4GHz and 5.8GHz. The anti-interference ability of RF communication is far inferior to that of wired communication. There are many interference sources in the ISM frequency band. From the frequency band, there are co-channel interference and adjacent frequency interference. , Exaggerated frequency interference, from the signal distinction, there are 802.11 interference and non-802.11 interference (mainly frequency hopping technology Bluetooth, microwave ovens, radar), WLAN interference comes from conflict and avoidance, and interference intensifies conflict and avoidance, and multiple devices transmit at the same time. When an air interfac...
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IPC IPC(8): H04W24/02H04W36/08H04W36/20H04W84/12
CPCH04W24/02H04W36/08H04W36/20H04W84/12
Inventor 李长柏
Owner 杭州吉吉知识产权运营有限公司