Radio Beacon for Direction Detection
First Claim
Patent Images
1. A method of determining a direction from a beacon comprising:
- differentiating, at the beacon, a first packet in a sequence of packets, the sequence of packets comprising the first packet and a plurality of additional packets;
transmitting the sequence of packets from the beacon, said transmitting comprising;
transmitting the differentiated first packet using a first antenna; and
transmitting each of the additional packets in the sequence of packets using a different one of a plurality of directional antennas.
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Accused Products
Abstract
In embodiments of radio beacon for direction detection, a beacon differentiates a first packet in a sequence of packets for transmission. The beacon transmits the sequence of packets using an omnidirectional antenna and a number of directional antennas. The beacon transmits the differentiated, first packet using the omnidirectional antenna and transmits each of the other packets in the sequence of packets using a different one of the directional antennas for each transmission of the other packets. A mobile device receives the sequence of packets from the beacon and determines a direction of the mobile device relative to the beacon.
101 Citations
20 Claims
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1. A method of determining a direction from a beacon comprising:
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differentiating, at the beacon, a first packet in a sequence of packets, the sequence of packets comprising the first packet and a plurality of additional packets; transmitting the sequence of packets from the beacon, said transmitting comprising; transmitting the differentiated first packet using a first antenna; and transmitting each of the additional packets in the sequence of packets using a different one of a plurality of directional antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. method comprising:
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receiving, at a mobile device, a sequence of packets transmitted by a beacon including a first packet transmitted omnidirectionally and a plurality of packets transmitted directionally; identifying a first position, in the received sequence of packets, of the first packet of the received sequence of packets transmitted omnidirectionally; identifying a second position, in the received sequence of packets, of a second packet of the received sequence of packets transmitted directionally; and determining, based on the identified second position with respect to the identified first position, a direction of the mobile device relative to the beacon. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A system comprising:
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a beacon comprising an omnidirectional antenna and a plurality of directional antennas, the beacon configured to; sequentially transmit a sequence of radio packets using the omnidirectional antenna and each of the plurality of directional antennas, the transmission using the omnidirectional antenna being differentiated from the transmissions using each of the plurality of directional antennas; and a mobile device configured to; receive the sequence of the radio packets transmitted by the beacon; identify a first position, in the received sequence of radio packets, of the radio packet transmitted omnidirectionally using the omnidirectional antenna in the received sequence of radio packets; identify a second position, in the received sequence of radio packets, of a second radio packet in the received sequence of radio packets, the second radio packet having been transmitted directionally by the beacon using one of the plurality of the directional antennas; and determine, based on the identified second position with respect to the identified first position, a direction of the mobile device relative to the beacon. - View Dependent Claims (18, 19, 20)
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Specification