Method for route loss estimation of base station signal strength
A technology of signal strength and path loss, applied in the direction of transmission control/equalization, radio/inductive link selection arrangement, selection device, etc., can solve the problems of base station signal strength path loss error, wireless propagation environment simulation, etc., to improve Effect of Prediction Accuracy
Inactive Publication Date: 2009-01-14
CHONGQING THREE GORGES UNIV
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However, the existing correction method is used to correct the direction of different wireless propagation paths in the estimated area based on the same correction coefficient, and the same corrected wireless propagation model is obtained, so it is impossible to accurately estimate the wireless propagation environment in the estimated area. Due to ground simulation, there is still a large error in the estimated signal strength path loss of the base station
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[0069] In this embodiment, the base station is in area b, and the area b can be expressed by setting a coordinate system such as a rectangular coordinate system or a polar coordinate system, and the polar coordinate system is used here. According to the preset polar coordinate system and the method of the invention, the coverage range of the base station signal is generated on the electronic map.
[0070] Such as image 3 As shown, the preset polar coordinate system is as follows:
[0071] The pole o of the polar coordinate system: used to describe the position of the base station; for the base station whose position is not at the pole, it is moved to the pole by translation.
[0072] The reference oa of the wireless propagation path direction: the propagation direction whose angle is 0 degrees.
[0073] The direction of the wireless propagation path: described by the included angle with the reference oa, for example, the propagation direction of 1 degree means: rotate oa 1 ...
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The invention discloses a method for estimating path loss for base station signal intensity comprising the following steps of selecting radio transmission model corresponding to classical area type, obtaining rectified model according to base station emission power, signal intensity of measuring point, distance between base station and the measuring point in radio transmission path and selected radio transmission model, estimating every pre-estimation point signal intensity of all radio transmission path in pre-estimation area. Considering base station signal different path loss can occur when it transmits along different radio transmission path, the radio transmission model modified by inventive method can accurately emulate radio transmission environment, thereby promoting accuracy of pre-estimation area base station signal intensity spoilage.
Description
technical field [0001] The invention relates to signal strength loss estimation technology, in particular to a method for estimating path loss of base station signal strength. Background technique [0002] In the process of wireless communication system construction, because operators need to bear a large amount of funds for the infrastructure construction of the wireless network, and in the whole process of wireless network construction, the performance of the wireless network will change with the construction and operation of the wireless network, so , on the basis of ensuring the operator's access to the wireless network and the performance of the wireless network, in order to reduce the cost and improve the performance of the wireless network, accurate and effective network optimization is required. In network optimization, the corresponding wireless propagation model is usually selected according to the wireless propagation environment to which the estimated area belong...
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IPC IPC(8): H04B7/005H04Q7/30
Inventor 谭泽富谢小维
Owner CHONGQING THREE GORGES UNIV