An indoor high-frequency band wireless body area network off-body channel modeling method

By constructing a body-to-body relative angle path loss model, the channel modeling problem in high-frequency indoor wireless body area networks where both the transmitter and receiver are on the human body is solved, accurately characterizing the changes in path loss and improving the applicability of the model.

CN116545560BActive Publication Date: 2025-12-23NANJING UNIV OF POSTS & TELECOMM
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Patent Information

Application Number
CN202310610005.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-26
Publication Date
2025-12-23
Estimated Expiration
2043-05-26

AI Technical Summary

Technical Problem

In existing high-frequency indoor wireless body area network channel modeling, there are few studies on which both the transceiver and receiver are on the human body, and the influence of changes in human body orientation and angle on wireless channel propagation characteristics has not been fully considered.

Method used

An initial model of body-to-body relative angle path loss is constructed. The path loss exponent, floating intercept, and path loss caused by relative angle are fitted by the least squares method to establish an indoor high-frequency off-body channel path loss model, which characterizes the path loss impact of different body-to-body relative angles.

Benefits of technology

It more accurately characterizes the path loss effect of body-to-body at different relative angles, improving the accuracy and applicability of the model.

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Abstract

The application discloses a kind of indoor high-frequency band wireless body area network off-body channel modeling method.For the influence caused by the relative angle between the sending end human body and the receiving end human body to the path loss of off-body channel, the application first analyzes the influence of the relative angle between body-to-body on channel characteristics using wireless propagation theory;Then, using the path loss exponent related to the relative angle between body-to-body, the floating intercept, and the path loss caused by the change of the relative angle between body-to-body, a new path loss model is established;Finally, the least squares method is used to fit and determine the related parameters of the established model, so that it can more accurately represent the wireless propagation characteristics of the actual communication scenario.Compared with the traditional logarithmic path loss model, the application can be closer to the actual measurement results due to the consideration of the influence of the relative angle between body-to-body.
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