Automatic detection method for protection time parameters of wireless system
A technology of guard time and wireless system, which is applied in the directions of wireless communication, orthogonal multiplexing system, security device, etc., can solve the problems that users do not know the concept of guard time, cannot bring flexibility, and can make environmental assessments, etc. Achieve the effect of reducing the packet error rate and the possibility of data packet retransmission, improving flexibility and applicability, and improving throughput performance
Pending Publication Date: 2020-10-30
芯河半导体科技(无锡)有限公司
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Problems solved by technology
This global setting does not lead to flexible, optimal results
[0005] The problem faced by the existing technology is that users who do not have professional knowledge do not know the concept of protection time, let alone make an effective assessment of the actual environment to make the correct selection of protection time
When the environment changes, the wireless system cannot automatically adapt to the environment and adjust the protection time used by the wireless system
Even an engineer with wireless knowledge cannot make an assessment of the environment, and it is difficult to use instruments to measure and observe the effect of guard time selection on inter-symbol interference of wireless modulated signals
Engineers often instinctively choose a short guard time in order to obtain high channel utilization and throughput, but ignore that a short guard time may cause serious inter-symbol interference and frame damage
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[0027] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.
[0028] see Figure 1-2 , a wireless system protection time parameter automatic detection method, the specific steps are as follows:
[0029] Step 1: Wireless association occurs between the sending end and the receiving end, and the authentication is passed;
[0030] Step 2: The sending end performs an automatic detection operation to obtain the optimal protection time setting;
[0031] Step 3: the sending end starts the automatic detection timer; the default duration of the timer is 1 minute, and the statistical counting of the error packet rate of the conventional data message is cleared; for each connected wireless terminal, the present invention maintains an independent detection timer;
[0032] Step 4: The automatic detection timer expires. If the packet error rate of regular data packets sent during the period is higher than the preset thres...
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The invention discloses an automatic detection method for protection time parameters of a wireless system, and the method comprises the following specific steps: 1, enabling a transmitting end and a receiving end to be in wireless association, and passing the authentication; 2, enabling the sending end to execute automatic detection operation to obtain optimal protection time setting; 3, enablingthe sending end to start an automatic detection timer; 4, when the automatic detection timer expires, if the packet error rate of the conventional data message sent in the period is higher than a preset threshold value, turning to the step 2, and performing re-detection to obtain the optimal protection time; and if the packet error rate of the conventional data message sent during the period is lower than the preset threshold, turning to the step 3, and entering the packet error rate statistics of the next period without re-detection. According to the invention, the optimal protection time setting can be automatically detected and selected; detection is carried out when wireless connection is established, detection can also be carried out in the operation stage, dynamic protection time parameters are provided, user intervention is not needed, and correct protection time parameters are used.
Description
technical field [0001] The invention belongs to the technical field of wireless router protection time, in particular to a method for automatic detection of wireless system protection time parameters. Background technique [0002] Wireless routers and wireless workstations currently on the market have a wealth of parameter configurations. 802.11a, 802.11n, 802.11ac, and 802.11ax based on OFDM modulation technology all have a parameter called GI-guard interval. 802.11a uses a fixed guard time of 800ns; 802.11n and 802.11ac have two optional guard times of 400ns and 800ns. The latest 802.11ax standard (also known as WiFi 6) has three optional guard times of 800ns, 1.6μs and 3.2μs. [0003] Different guard times are directly related to wireless channel utilization. Theoretically, the shorter the guard time, the higher the channel utilization efficiency. Conversely, the longer the guard time, the lower the channel utilization. However, the choice of protection time is also ...
Claims
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Login to View More IPC IPC(8): H04J11/00H04W24/00H04W12/06
CPCH04J11/0023H04W24/00H04W12/06Y02D30/70
Inventor 武斌
Owner 芯河半导体科技(无锡)有限公司