System, device and methods for transmitting and receiving location dependent data

• US 10,433,114 B2
• Filed: 12/22/2016
• Issued: 10/01/2019
• Est. Priority Date: 12/23/2015
• Status: Active Grant

• Current Assignee: Koninklijke KPN NV
• Original Assignee: Koninklijke KPN NV
• Inventors: Cronie, Harm, Nolan, Julian, Lawrenson, Matthew
• Primary Examiner(s): Ho, Huy C
• Application Number:
  US16/063,579
• Publication Number:
  US 20180376291A1
• Time in Patent Office: 1,013 Days
• Field of Search: 4554561
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04W 4/021 Services related to particular areas, e.g. point of interest [POI] services, venue services or geofences
• CPC Class Codes: H04W 4/023 using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 4/06 Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
• CPC Class Codes: H04W 4/18 Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
• CPC Class Codes: H04W 4/40 for vehicles, e.g. vehicle-to-pedestrians [V2P]

Abstract

The invention relates to a system (1) for transmitting location dependent data. The system comprises multiple antennas (3), a transmitter (5) coupled to the multiple antennas (3) and a processor (7). The processor (7) is configured to determine multiple location dependent parts of the location dependent data, each of the multiple location dependent parts corresponding to a different geographical region (8a-g, 25), and to use the transmitter (5) to transmit at least two of the multiple location dependent parts to a different target location (9a-g, 23) over the multiple antennas (3). Each of the at least two location dependent parts is associated with a different reference location (9a-g, 21) and the distance between a target location (9a-g, 23) and a reference location (9a-g, 21) associated with a location dependent part transmitted to the target location (9a-g, 23) is smaller than a predetermined threshold. The invention further relates to a device (17) for receiving location dependent data. The device (17) comprises a receiver and a processor. The processor is configured to use the receiver to receive a broadcast data stream comprising a first location dependent part of the location dependent data and a first identifier identifying the first location dependent part at a previous instance and a second location dependent part of the location dependent data and a second identifier identifying the second location dependent part at a current instance. The processor is further configured to detect a difference between the first identifier and the second identifier and to disregard the first location dependent part when the difference is detected. The invention further relates to the methods performed by the system and the device and a computer program product enabling a computer system to perform any of these methods.

Claims

1. A system for transmitting location dependent data, comprising:

an antenna array;

a transmitter coupled the antenna array; and

a processor configured to determine a plurality of location dependent parts of the location dependent data, each of the plurality of location dependent parts corresponding to a different geographical region, and to use the transmitter to transmit each of at least two of the plurality of location dependent parts to a different target location over the antenna array using beamforming, wherein each of the at least two of the plurality of location dependent parts is associated with a different reference location and the distance between a target location and a reference location associated with a location dependent part transmitted to the target location is smaller than a predetermined threshold.

2. The system of claim 1, wherein the processor is further configured to use the transmitter to transmit the each of the at least two of the plurality of location dependent parts to the different target location over the antenna array using multipath propagation.

3. The system of claim 1, wherein the processor is further configured to use the transmitter to transmit the plurality of location dependent parts to stationary receivers at the reference locations.

4. The system of claim 1, wherein the processor is further configured to configure a directivity of at least one of the transmitter or the antenna array based on the reference location associated with the location dependent part and a location of a receiver located near the reference location in order to transmit the location dependent part to the target location.

5. The system of claim 1, wherein the antenna array comprises N antennas, the plurality of location dependent parts comprises K location dependent parts, the target locations comprise K target locations and N is at least equal to K.

6. The system of claim 5, wherein N is larger than K.

7. The system of claim 5, wherein signals transmitted over the N antennas can be represented by a vector {right arrow over (x)}, signals received at the K target locations can be represented by a vector {right arrow over (y)}, the vector {right arrow over (y)} can be approximated by multiplying a K×

N channel matrix H with the vector {right arrow over (x)} and the K×

N channel matrix H has a rank of K.

8. The system of claim 7, wherein at least one of the processor or the transmitter is configured to generate values for transmission over the N antennas which can be represented by the vector {right arrow over (x)} by performing at least one multiplication that is equal to multiplying a column vector comprising the K location dependent parts with a N×

K matrix P, the K×

N channel matrix H multiplied with the N×

K matrix P equaling the identity matrix.

9. The system of claim 1, further comprising data storage configured to store the plurality of location dependent parts and information associating each of the plurality of location dependent parts with a different reference location, wherein the processor is further configured to determine a target location for each of the location dependent parts based on the reference location associated with the each of the location dependent parts and configured to obtain the plurality of location dependent parts from the data storage.

10. The system of claim 1, wherein the processor is further configured to use the transmitter to transmit at least one of an identifier of the location dependent part and an identifier of the reference location associated with the location dependent part along with the location dependent part to the target location.

11. A device for receiving location dependent data, the device comprising:

a receiver; and

a processor configured to use the receiver to receive a broadcast data stream comprising a first location dependent part of the location dependent data and a first identifier identifying the first location dependent part at a previous instance and a second location dependent part of the location dependent data and a second identifier identifying the second location dependent part at a current instance, to detect a difference between the first identifier and the second identifier and to disregard the first location dependent part when the difference is detected.

12. The device of claim 11, wherein the processor is further configured to determine a geographical location of the device, to use the receiver to receive an identifier of a location associated with the second location dependent part in the broadcast data stream and to correct the second location dependent part based on a difference between the determined geographical location of the device and the location associated with the second location dependent part.

13. A method of transmitting location dependent data, comprising:

determining a plurality of location dependent parts of the location dependent data, each of the plurality of location dependent parts corresponding to a different geographical region; and

using a transmitter to transmit each of at least two of the plurality of location dependent parts to a different target location over an antenna array using beamforming, wherein each of the at least two of the plurality of location dependent parts is associated with a different reference location and the distance between a target location and a reference location associated with a location dependent part transmitted to the target location is smaller than a predetermined threshold.

14. The method of claim 13, wherein using the transmitter to transmit the each of the at least two of the plurality of location dependent parts to the different target location over the antenna array comprises using the transmitter to transmit the each of the at least two of the plurality of location dependent parts to a different target location over the antenna array using multipath propagation.

15. A method of receiving location dependent data, comprising:

using a receiver to receive a broadcast data stream comprising a first location dependent part of the location dependent data and a first identifier identifying the first location dependent part at a previous instance and a second location dependent part of the location dependent data and a second identifier identifying the second location dependent part at a current instance;

detecting a difference between the first identifier and the second identifier; and

disregarding the first location dependent part when the difference is detected.

16. A non-transitory computer-readable medium having instructions stored thereon that, when executed by a processor of a system comprising an antenna array and a transmitter coupled to the antenna array, cause the processor to carry out operations including:

determining a plurality of location dependent parts of the location dependent data, each of the plurality of location dependent parts corresponding to a different geographical region; and

using the transmitter to transmit each of at least two of the plurality of location dependent parts to a different target location over the antenna array using beamforming, wherein each of the at least two of the plurality of location dependent parts is associated with a different reference location and the distance between a target location and a reference location associated with a location dependent part transmitted to the target location is smaller than a predetermined threshold.

17. A non-transitory computer-readable medium having instructions stored thereon that, when executed by a processor of a system comprising a receiver, cause the processor to carry out operations including:

using the receiver to receive a broadcast data stream comprising a first location dependent part of the location dependent data and a first identifier identifying the first location dependent part at a previous instance and a second location dependent part of the location dependent data and a second identifier identifying the second location dependent part at a current instance;

detecting a difference between the first identifier and the second identifier; and

disregarding the first location dependent part when the difference is detected.