Automatic determination and tuning of pico-cell topology for low-power wireless systems
First Claim
1. A method of determining the cellular topology of a cellular network, having a plurality of radio base stations connected to a central controller, comprising the steps of:
- a) selecting a base station from said plurality of base stations;
b) broadcasting from said selected base station a test signal;
c) receiving the test signal at each base station located within the radio propagation range of said selected base station;
d) measuring the Received Signal Strength Indication (RSSI) level at each base station able to receive said test signal from said selected base station;
e) forwarding the measured RSSI level to the central controller;
f) repeating steps a) to e) until each base station in said plurality has been selected and until all RSSI levels have been measured; and
g) determining the relative location of each base station from one another by mapping a matrix of measured RSSI levels for the corresponding radio base stations, so as to delineate the cellular bounds of the network.
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Accused Products
Abstract
A method of using the existing radio resources to automatically determine the current cellular topology is described. Wireless basestations are placed into a mode where they can transmit a signal which can be received by all of the base stations in range of the transmitting basestation. Each base station in the system serially broadcast a signal which is received by all other basestations within the range of the transmitting basestation. Each of the receiving radios determines the RSSI (Received Signal Strength Indication) at which they received the transmitted signal. The RSSI values are used to determine which base stations are physically co-located into cells and then determine the relative locations of the cells to each other.
189 Citations
13 Claims
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1. A method of determining the cellular topology of a cellular network, having a plurality of radio base stations connected to a central controller, comprising the steps of:
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a) selecting a base station from said plurality of base stations; b) broadcasting from said selected base station a test signal; c) receiving the test signal at each base station located within the radio propagation range of said selected base station; d) measuring the Received Signal Strength Indication (RSSI) level at each base station able to receive said test signal from said selected base station; e) forwarding the measured RSSI level to the central controller; f) repeating steps a) to e) until each base station in said plurality has been selected and until all RSSI levels have been measured; and g) determining the relative location of each base station from one another by mapping a matrix of measured RSSI levels for the corresponding radio base stations, so as to delineate the cellular bounds of the network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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Specification