Method and apparatus for protecting radars from interference

• US 9,451,470 B2
• Filed: 06/26/2014
• Issued: 09/20/2016
• Est. Priority Date: 06/26/2014
• Status: Active Grant

• Current Assignee: Nokia Technologies Oy (Nokia Corporation)
• Original Assignee: Nokia Technologies Oy (Nokia Corporation)
• Inventors: Safavi Naeini, Hossein Ali, Ghosh, Chittabrata, Doppler, Klaus, Roy, Sumit
• Primary Examiner(s): PATEL, CHANDRAHAS B
• Application Number:
  US14/316,500
• Publication Number:
  US 20150382357A1
• Time in Patent Office: 817 Days
• US Class Current: 1/1
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 16/16 for PBS [Private Base Station] arrangements
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 52/243 taking into account interferences
• CPC Class Codes: H04W 52/38 TPC being performed in particular situations

Abstract

A method and apparatus may be configured to determine a plurality of rings. The plurality of rings surround a radar, and the plurality of rings encompass a plurality of networks surrounding the radar. The method also includes determining transmission powers corresponding to the plurality of rings. Each ring is associated with a determined transmission power. The method also includes instructing each network of the plurality of networks to perform transmissions in accordance with the determined transmission powers. Each network is instructed to use the determined transmission power that corresponds to the ring which encompasses that network.

Claims

1. A method, comprising:

determining, by a management node, a plurality of rings, wherein the plurality of rings surround a radar, and the plurality of rings encompass a plurality of networks surrounding the radar;

determining transmission powers corresponding to the plurality of rings, wherein each ring is associated with a determined transmission power;

instructing each network of the plurality of networks to perform transmissions in accordance with the determined transmission powers, wherein each network is instructed to use the determined transmission power that corresponds to the ring which encompasses that network; and

assigning a sensing schedule for a requesting network of the plurality of networks, wherein the sensing schedule comprises a sensing duration and a sensing periodicity, and the assigning is at least in part based on a pathloss between the requesting network and the radar and an angular distance of the requesting network to the radar main beam.

2. The method according to claim 1, wherein the determining the plurality of rings comprises determining the plurality of rings by a radio-management-service device.

3. The method according to claim 1, wherein the determining the plurality of rings comprises determining a plurality of concentric rings.

4. The method according to claim 1, wherein the determining the plurality of rings comprises determining a maximum radius value of each ring, and the maximum radius value is based on a desired distribution of pathlosses within each ring.

5. The method according to claim 1, wherein the determining the transmission powers corresponding to the plurality of rings comprises determining transmission powers that are equal to each other or assigning higher transmission power to rings closer to the radar.

6. A computer program product, embodied on a non-transitory computer readable medium, the computer program product configured to control a processor to perform a process, comprising:

determining, by a management node, a plurality of rings, wherein the plurality of rings surround a radar, and the plurality of rings encompass a plurality of networks surrounding the radar;

determining transmission powers corresponding to the plurality of rings, wherein each ring is associated with a determined transmission power;

instructing each network of the plurality of networks to perform transmissions in accordance with the determined transmission powers, wherein each network is instructed to use the determined transmission power that corresponds to the ring which encompasses that network; and

assigning a sensing schedule for a requesting network of the plurality of networks, wherein the sensing schedule comprises a sensing duration and a sensing periodicity, and the assigning is at least in part based on a pathloss between the requesting network and the radar and an angular distance of the requesting network to the radar main beam.

7. An apparatus, comprising:

at least one processor; and

at least one memory including computer program code,

the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus at least to

determine a plurality of rings, wherein the plurality of rings surround a radar, and the plurality of rings encompass a plurality of networks surrounding the radar;

determine transmission powers corresponding to the plurality of rings, wherein each ring is associated with a determined transmission power;

instruct each network of the plurality of networks to perform transmissions in accordance with the determined transmission powers, wherein each network is instructed to use the determined transmission power that corresponds to the ring which encompasses that network; and

assign a sensing schedule for a requesting network of the plurality of networks, wherein the sensing schedule comprises a sensing duration and a sensing periodicity, and the assigning is at least in part based on a pathloss between the requesting network and the radar and an angular distance of the requesting network to the radar main beam.

8. The apparatus according to claim 7, wherein the apparatus comprises a radio-management-service device.

9. The apparatus according to claim 7, wherein the determining the plurality of rings comprises determining a plurality of concentric rings.

10. The apparatus according to claim 7, wherein the determining the plurality of rings comprises determining a maximum radius value of each ring, and the maximum radius value is based on a desired distribution of pathlosses within each ring.

11. The apparatus according to claim 7, wherein the determining the transmission powers corresponding to the plurality of rings comprises determining transmission powers that are equal to each other or assigning higher transmission power to rings closer to the radar.

12. A computer program product, embodied on a non-transitory computer readable medium, the computer program product configured to control a processor to perform a process, comprising:

determining, by a network node, that a spectrum is to be used for transmitting, wherein the spectrum comprises a spectrum used by a radar;

transmitting information relating to the network node;

receiving an instruction to perform transmissions in accordance with a determined transmission power; and

receiving a sensing schedule from a management node, wherein the sensing schedule comprises a sensing duration and a sensing periodicity that are at least in part based on a pathloss between the network node and the radar and an angular distance of the network node to the radar main beam.

13. A method, comprising:

determining, by a network node, that a spectrum is to be used for transmitting, wherein the spectrum comprises a spectrum used by a radar;

transmitting information relating to the network node;

receiving an instruction to perform transmissions in accordance with a determined transmission power; and

receiving a sensing schedule from a management node, wherein the sensing schedule comprises a sensing duration and a sensing periodicity that are at least in part based on a pathloss between the network node and the radar and an angular distance of the network node to the radar main beam.

14. The method of claim 13, wherein the transmitting information relating to the network node comprises transmitting at least one of an identifier of the network node, a pathloss from the network node to the radar, coordinates of the network node, a load, a channel quality, and an aggregate power.

15. The method of claim 13, wherein the determining that a spectrum is to be used for transmitting comprises determining by a base station, a wireless-local-area-network access point, an evolved Node B, or a wireless-local-area-network station.

16. An apparatus, comprising:

at least one processor; and

at least one memory including computer program code,

the at least one memory and the computer program code configured, with the at least one processor, to cause the apparatus at least to

determine that a spectrum is to be used for transmitting, wherein the spectrum comprises a spectrum used by a radar;

transmit information relating to the apparatus;

receive an instruction to perform transmissions in accordance with a determined transmission power; and

receive a sensing schedule from a management node, wherein the sensing schedule comprises a sensing duration and a sensing periodicity that are at least in part based on a pathloss between the apparatus and the radar and an angular distance of the apparatus to the radar main beam.

17. The apparatus of claim 16, wherein the apparatus comprises a base station, a wireless-local-area-network access point, an evolved Node B, or a wireless-local-area-network station.

18. The apparatus of claim 16, wherein the transmitting information relating to the apparatus comprises transmitting at least one of an identifier of the network node, a pathloss from the network node to the radar, coordinates of the network node, a load, a channel quality, and an aggregate power.