WIRELESS TRANSCEIVER
First Claim
1. A method for determining a distance between a wireless transceiver and a wireless receiver arranged to communicate with each other in a wireless communication network, the wireless receiver having an active and an inactive reception state, the method comprising:
- transmitting, with the wireless receiver in the active reception state, a first transmission signal;
receiving a first reflection signal, the first reflection signal being a reflection of the first transmission signal and influenced by the active reception state of the wireless receiver;
transmitting, with the wireless receiver in the inactive reception state, a second transmission signal;
receiving a second reflected signal, the second reflection signal being a reflection of the second transmission signal and influenced by the inactive reception state of the wireless receiver; and
determining a distance between the wireless transceiver and the wireless receiver based on the second reflection signal.
1 Assignment
0 Petitions
Accused Products
Abstract
The present invention relates to a method for determining a distance between a wireless transceiver and a wireless receiver arranged to communicate with each other in a wireless communication network, the wireless receiver having an active and an inactive reception state, the method comprising transmitting, with the wireless receiver in the active reception state, a first transmission signal, receiving a first reflection signal, the first reflection signal being a reflection of the first transmission signal and influenced by the active reception state of the wireless receiver, transmitting, with the wireless receiver in the inactive reception state, a second transmission signal, receiving a second reflected signal, the second reflection signal being a reflection of the second transmission signal and influenced by the inactive reception state of the wireless receiver, and determining a distance between the wireless transceiver and the wireless receiver based on the second reflection signal.
The invention thus provides for an improved measure of distance and orientation determination between wireless nodes having only one or a few nodes are equipped with means to determine an accurate distance while most other wireless nodes only need extremely simple synchronization means, providing only at least two reception states (on and off). This allows for exact positioning even if the nodes follow different communication standards in the same band.
21 Citations
101 Claims
-
1. A method for determining a distance between a wireless transceiver and a wireless receiver arranged to communicate with each other in a wireless communication network, the wireless receiver having an active and an inactive reception state, the method comprising:
-
transmitting, with the wireless receiver in the active reception state, a first transmission signal; receiving a first reflection signal, the first reflection signal being a reflection of the first transmission signal and influenced by the active reception state of the wireless receiver; transmitting, with the wireless receiver in the inactive reception state, a second transmission signal; receiving a second reflected signal, the second reflection signal being a reflection of the second transmission signal and influenced by the inactive reception state of the wireless receiver; and determining a distance between the wireless transceiver and the wireless receiver based on the second reflection signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A wireless transceiver together with a wireless receiver arranged to communicate with each other in a wireless communication network, the wireless receiver having an active and an inactive reception state, the wireless transceiver comprising:
-
a transmitter for transmitting a first transmission signal with the wireless receiver in the active reception state and a second transmission signal with the wireless receiver in the inactive reception state; a receiver for receiving a first and a second reflection signal, the first reflection signal being a reflection of the first transmission signal and influenced by the active reception state of the wireless receiver, and the second reflection signal being a reflection of the second transmission signal and influenced by the inactive reception state of the wireless receiver; and a control unit adapted to determine a distance between the wireless transceiver and the wireless receiver based on the second reflection signal. - View Dependent Claims (14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 25)
-
-
18. A wireless communication network comprising a wireless transceiver and a wireless receiver arranged to communicate with each other, the wireless receiver having an active and an inactive reception state, the wireless transceiver comprising:
-
a transmitter for transmitting a first transmission signal with the wireless receiver in the active reception state and a second transmission signal with the wireless receiver in the inactive reception state; a receiver for receiving a first and a second reflection signal, the first reflection signal being a reflection of the first transmission signal and influenced by the active reception state of the wireless receiver, and the second reflection signal being a reflection of the second transmission signal and influenced by the inactive reception state of the wireless receiver being different from the first reception state; and a control unit adapted to determine a distance between the wireless transceiver and the wireless receiver based on the second reflection signal.
-
-
26. A wireless transceiver, comprising:
-
a transmitter for transmitting an outgoing radio-frequency (RF) communication signal to a wireless node; a receiver for receiving RF communication signals carrying data from the wireless node including an echo signal resulting from reflection of said outgoing RF communication signal at said wireless node; and a control unit adapted for extracting said data from the received RF communication signal, and further adapted for determining a distance between the wireless transceiver and the wireless node based on said echo signal. - View Dependent Claims (27, 28, 29, 30)
-
-
101-130. -130. (canceled)
Specification