Method of indoor radio planning
First Claim
1. A radio planning method for determining optimal positioning of base stations in an indoor environment, comprising the steps of:
- defining a plurality of transmitting points for placing at least one base station and at least one receiving point for receiving signals transmitted by the at least one base station;
obtaining environment affecting factors indicative of the effect of the indoor environment on the radio signal propagated from each transmitting point to each receiving point by performing actual measurements with a plurality of base stations placed at said plurality of transmitting points and wherein a selected type of base station is placed at one transmitting point;
for a given one of said transmitting points and at least one type of base station, calculating non-environment-affecting theoretical values of signal strength to be received at each receiving point according to a non-environment-affecting theoretical attenuation model corresponding to the type of base station; and
generating a map of signal strength received at each of said at least one receiving point on the basis of said non-environment-affecting theoretical values and said environment affecting factors.
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Accused Products
Abstract
A radio planning method and apparatus for determining the setting scheme of base stations in an indoor environment is provided. A radio signal propagation model is generated including a theoretical attenuation part and an environment affecting part. Through on-site measurements, a site radio signal propagation characteristics database is constructed combining the indoor radio signal propagation model and on-site measurement results. Based on the environment-dependent database, a radio signal map representing the radio signal distribution to be generated in the site in the case of placing any type of base station in any position is generated, using the indoor radio signal propagation model. By applying a signal-to-quality mapping, the distribution of a specific quality metric for any base station is obtained. Thus, by inputting different base station parameters, respective radio signal maps can be generated to optimize positioning of base stations.
28 Citations
16 Claims
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1. A radio planning method for determining optimal positioning of base stations in an indoor environment, comprising the steps of:
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defining a plurality of transmitting points for placing at least one base station and at least one receiving point for receiving signals transmitted by the at least one base station; obtaining environment affecting factors indicative of the effect of the indoor environment on the radio signal propagated from each transmitting point to each receiving point by performing actual measurements with a plurality of base stations placed at said plurality of transmitting points and wherein a selected type of base station is placed at one transmitting point; for a given one of said transmitting points and at least one type of base station, calculating non-environment-affecting theoretical values of signal strength to be received at each receiving point according to a non-environment-affecting theoretical attenuation model corresponding to the type of base station; and generating a map of signal strength received at each of said at least one receiving point on the basis of said non-environment-affecting theoretical values and said environment affecting factors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A radio planning apparatus for determining optimal positioning of base stations in an indoor environment, wherein at least one transmitting point for placing base station and at least one receiving point for receiving signals transmitted by the base stations are defined in said indoor environment, the apparatus comprising:
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an environment affecting factor obtaining means for obtaining environment affecting factors indicative of the effect of the indoor environment on the radio signal propagated from each transmitting point to each receiving point by performing actual measurements with a plurality of base stations placed at transmitting points and wherein a selected type of base station is placed at one transmitting point; an non-environment-affecting theoretical attenuation model calculating means for calculating at least one non-environment-affecting theoretical value of signal strength to be received at each receiving point according to a non-environment-affecting theoretical attenuation model corresponding to the type of base station; and a received signal strength map generating means for generating a map of signal strength received at each of said at least one receiving point on the basis of said non-environment-affecting theoretical values and said environment affecting factors. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification