Methods used in control nodes, and associated control nodes

• US 10,499,251 B2
• Filed: 10/19/2018
• Issued: 12/03/2019
• Est. Priority Date: 06/26/2015
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Li, Gen, Liu, Jinhua
• Primary Examiner(s): Patel, Hardikkumar D
• Application Number:
  US16/166,054
• Publication Number:
  US 20190058998A1
• Time in Patent Office: 410 Days
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports
• CPC Class Codes: H04W 56/0015 one node acting as a reference for the others
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/541 using the level of interference
• CPC Class Codes: H04W 76/15 Setup of multiple wireless link connections
• CPC Class Codes: H04W 88/10 adapted for operation in multiple networks, e.g. multi-mode access points

Abstract

Method used in a first control node controlling one or more first links among two or more first radio nodes in a first network, and an associated first control node. Transmitting desired sounding and sensing related parameters of the first control node to a second control node controlling one or more second links among two or more second radio nodes in a second network neighboring the first network and operating at the same frequency as the first network. Receiving, from the second control node, sounding and sensing related parameters to be applied to the one or more second links, which are adjusted based on the desired sounding and sensing related parameters of the first control node. Adjusting the desired sounding and sensing related parameters of the first control node, based on the sounding and sensing related parameters to be applied to the one or more second links and applying them.

Claims

1. A method used in a network node of a first network for determining interference from a second network, comprising:

determining first sounding and sensing related parameters for radio nodes of the first network that communicate using directional links utilizing beam-forming, wherein sounding and sensing, utilizing the first sounding and sensing related parameters, by the radio nodes of the first network during a sounding and sensing window provide measurements for determining intra-network interference for the first network;

receiving second sounding and sensing related parameters for radio nodes of the second network that communicate using directional links utilizing beam-forming, wherein the second sounding and sensing related parameters pertain to radio nodes of the second network;

adjusting the sounding and sensing window of the first network, based on the second sounding and sensing related parameters, to sense effects of sounding of the radio nodes of the second network on radio nodes of the first network; and

applying the adjusted sounding and sensing window to sound and sense in the first network to obtain measurements to determine inter-network interference from the second network on the radio nodes of the first network, by transmitting sounding signals, based on the adjusted sounding and sensing window, by one or more of the radio nodes of the first network and sensing, by one or more of the radio nodes of the first network, the sounding signals of the first network and effects of sounding signals of the second network.

2. The method according to claim 1, wherein the transmitting further comprises transmitting the sounding signals orthogonal to sounding signals of the second network.

3. The method according to claim 1, further comprising:

determining a Directional Link Interference Map (DLIM) based on the sensing by one or more of the radio nodes of the first network.

4. The method according to claim 1, wherein a sounding portion of the adjusted sounding and sensing window of the first network aligns with a sounding portion of a sounding and sensing window of the second network.

5. The method according to claim 1, wherein a sounding portion of the adjusted sounding and sensing window of the first network does not align with a sounding portion of a sounding and sensing window of the second network.

6. The method according to claim 1, wherein a sounding portion of the adjusted sounding and sensing window of the first network overlaps with a sounding portion of a sounding and sensing window of the second network.

7. The method according to claim 1, wherein the first network and the second network share a frequency spectrum.

8. A network node of a first network for determining interference from a second network, comprising:

a processor; and

a memory containing instructions which, when executed by the processor, cause the network node to perform operations to;

determine first sounding and sensing related parameters for radio nodes of the first network that communicate using directional links utilizing beam-forming, wherein sounding and sensing, utilizing the first sounding and sensing related parameters, by the radio nodes of the first network during a sounding and sensing window provide measurements for determining intra-network interference for the first network;

receive second sounding and sensing related parameters for radio nodes of the second network that communicate using directional links utilizing beam-forming, wherein the second sounding and sensing related parameters pertain to radio nodes of the second network;

adjust the sounding and sensing window of the first network, based on the second sounding and sensing related parameters, to sense effects of sounding of the radio nodes of the second network on radio nodes of the first network; and

apply the adjusted sounding and sensing window to sound and sense in the first network to obtain measurements to determine inter-network interference from the second network on the radio nodes of the first network, by causing the network node to have one or more of the radio nodes of the first network transmit sounding signals, based on the adjusted sounding and sensing window, and have one or more of the radio nodes of the first network sense the sounding signals, of the first network and effects of sounding signals of the second network.

9. The network node according to claim 8, wherein the processor further causes the network node to have one or more of the radio nodes of the first network transmit the sounding signals orthogonal to sounding signals of the second network.

10. The network node according to claim 8, wherein the processor further determines a Directional Link Interference Map (DLIM) based on the sensing by one or more of the radio nodes of the first network.

11. The network node according to claim 8, wherein a sounding portion of the adjusted sounding and sensing window of the first network aligns with a sounding portion of a sounding and sensing window of the second network.

12. The network node according to claim 8, wherein a sounding portion of the adjusted sounding and sensing window of the first network does not align with a sounding portion of a sounding and sensing window of the second network.

13. The network node according to claim 8, wherein a sounding portion of the adjusted sounding and sensing window of the first network overlaps with a sounding portion of a sounding and sensing window of the second network.

14. The network node according to claim 8, wherein the first network and the second network share a frequency spectrum.

15. A non-transitory computer readable storage medium containing instructions which, when executed by a processor in a network node of a first network, cause the network node to perform operations for determining interference from a second network, comprising:

determining first sounding and sensing related parameters for radio nodes of the first network that communicate using directional links utilizing beam-forming, wherein sounding and sensing, utilizing the first sounding and sensing related parameters, by the radio nodes of the first network during a sounding and sensing window provide measurements for determining intra-network interference for the first network;

receiving second sounding and sensing related parameters for radio nodes of the second network that communicate using directional links utilizing beam-forming, wherein the second sounding and sensing related parameters pertain to radio nodes of the second network for determining intra-network interference for the second network;

adjusting the sounding and sensing window of the first network, based on the second sounding and sensing related parameters, to sense effects of sounding of the radio nodes of the second network on radio nodes of the first network; and

applying the adjusted sounding and sensing window to sound and sense in the first network to obtain measurements to determine inter-network interference from the second network on the radio nodes of the first network, by transmitting sounding signals, based on the adjusted sounding and sensing window, by one or more of the radio nodes of the first network and sensing, by one or ore of the radio nodes of the first network, the sounding signals of the first network and effects of sounding signals of the second network.

16. The non-transitory computer readable storage medium according to claim 15, wherein a sounding portion of the adjusted sounding and sensing window of the first network aligns with a sounding portion of a sounding and sensing window of the second network.

17. The non-transitory computer readable storage medium according to claim 15, wherein a sounding portion of the adjusted sounding and sensing window of the first network does not align with a sounding portion of a sounding and sensing window of the second network.

18. The non-transitory computer readable storage medium according to claim 15, wherein a sounding portion of the adjusted sounding and sensing window of the first network overlaps with a sounding portion of a sounding and sensing window of the second network.