METHODS USED IN SERVING RADIO NODE AND CONTROL NODE, AND ASSOCIATED DEVICES

• US 20180367266A1
• Filed: 06/24/2016
• Published: 12/20/2018
• Est. Priority Date: 06/26/2015
• Status: Abandoned Application

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: LIU, Jinhua
• Application Number:
  US15/739,398
• Publication Number:
  US 20180367266A1
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04L 5/0023 Time-frequency-space
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04L 5/0037 Inter-user or inter-terminal allocation
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0069 Allocation based on distance or geographical location allocation based on terminal or device properties in general, H04W72/51
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04L 5/0078 Timing of allocation
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/0446 Resources in time domain, e.g. slots or frames
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 76/27 Transitions between radio resource control [RRC] states

Abstract

A method used in a serving radio node and an associated serving radio node is described. The method includes receiving, from a control node controlling the serving radio node, a sounding and sensing related configuration for the serving radio node, wherein each sounding resource element indicated by the sounding and sensing related configuration is orthogonal to each sounding resource element indicated by a sounding and sensing related configuration for each neighboring radio node; and sensing, through a Receiver (RX) Radio Frequency (RF) chain of the serving radio node configured for each radio link of the one or more radio links, all sounding signals in a direction of the radio link based on the received sounding and sensing related configuration. Also described is another method used in a serving radio node and yet another method used in a control node controlling a serving radio node and an associated control node.

Claims

1. A method used in a serving radio node, wherein the serving radio node serves one or more client radio nodes which are connected to the serving radio node via one or more radio links, in a coverage area neighboring to one or more coverage areas served by one or more neighboring radio nodes in a wireless communication network, the method comprising:

receiving, from a control node controlling the serving radio node, a sounding and sensing related configuration for the serving radio node, wherein each sounding resource element indicated by the sounding and sensing related configuration is orthogonal to each sounding resource element indicated by a sounding and sensing related configuration for each neighboring radio node; and

sensing, through a Receiver (RX) Radio Frequency (RF) chain of the serving radio node configured for each radio link of the one or more radio links, all sounding signals in a direction of the radio link based on the received sounding and sensing related configuration.

2. The method according to claim 1, wherein the received sounding and sensing related configuration indicates two or more sounding and sensing windows per sounding and sensing duration, one or more sounding and sensing windows of which are configured as sensing windows for sensing by the serving radio node, and the remaining sounding and sensing windows of which are configured as sounding windows for sounding by the serving radio node.

3. The method according to claim 2, wherein the sounding windows for the serving radio node correspond, in time domain, to sensing windows for each neighboring radio node.

4. The method according to claim 2, wherein each sounding and sensing window has a same or different number of sounding and sensing resource elements.

5. The method according to claim 2, wherein each sounding and sensing window has consecutive or non-consecutive sounding and sensing resource elements.

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

allocating one or more sounding and sensing resource elements indicated by the received sounding and sensing related configuration, to the one or more radio links.

7. The method according to claim 1, wherein the sensing is performed in all sensing resource elements indicated by the received sounding and sensing related configuration.

8. The method according to claim 1, wherein the sensing is further performed in a part or all sounding resource elements indicated by the received sounding and sensing related configuration.

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

adjusting a sensing period for each radio link of the one or more radio links based on the received sounding and sensing related configuration and one or more predefined parameters, when a number of RX RF chains of the serving radio node is smaller than a number of all radio links for which the serving radio node serves as receivers; and

sensing, through a RX RF chain of the serving radio node configured for each radio link of the one or more radio links, all sounding signals in a direction of the radio link, based on the adjusted sensing period.

10. The method according to claim 9, wherein the one or more predefined parameters include at least one of:

a link radio quality;

a link rate;

or

a link traffic priority.

11. A method used in a control node controlling a serving radio node, wherein the serving radio node serves one or more client radio nodes which are connected to the serving radio node via one or more radio links, in a coverage area neighboring to one or more coverage areas served by one or more neighboring radio nodes in a wireless communication network, the method comprising:

determining a sounding and sensing related configuration for the serving radio node, wherein a sounding resource element indicated by the sounding and sensing related configuration for the serving radio node is orthogonal to each sounding resource element indicated by a sounding and sensing related configuration for each neighboring radio node; and

transmitting the determined sounding and sensing related configuration to the serving radio node.

12. The method according to claim 11, wherein the determined sounding and sensing related configuration indicates two or more sounding and sensing windows per sounding and sensing duration, one or more sounding and sensing windows of which are configured as sensing windows for sensing by the serving radio node, and the remaining sounding and sensing windows of which are configured as sounding windows for sounding by the serving radio node.

13. The method according to claim 12, where the sounding windows for the serving radio node correspond, in time domain, to sensing windows for each neighboring radio node.

14. The method according to claim 12, wherein each sounding and sensing window has a same or different number of sounding and sensing resource elements.

15. The method according to claim 12, wherein each sounding and sensing window has consecutive or non-consecutive sounding and sensing resource elements.

16. (canceled)

17. (canceled)

18. A serving radio node, which serves one or more client radio nodes which are connected to the serving radio node via one or more radio links, in a coverage area neighboring to one or more coverage areas served by one or more neighboring radio nodes in a wireless communication network, the serving radio node comprising:

a receiver to receive, from a control node controlling the serving radio node, a sounding and sensing related configuration for the serving radio node, wherein each sounding resource element indicated by the sounding and sensing related configuration is orthogonal to each sounding resource element indicated by a sounding and sensing related configuration for each neighboring radio node; and

a sensor to sense, through a Receiver (RX) Radio Frequency (RF) chain of the serving radio node configured for each radio link of the one or more radio links, all sounding signals in a direction of the radio link, based on the received sounding and sensing related configuration.

19. The serving radio node according to claim 18, wherein the received sounding and sensing related configuration indicates two or more sounding and sensing windows per sounding and sensing duration, one or more sounding and sensing windows of which are configured as sensing windows for sensing by the serving radio node, and the remaining sounding and sensing windows of which are configured as sounding windows for sounding by the serving radio node.

20. The serving radio node according to claim 19, where the sounding windows for the serving radio node correspond, in time domain, to sensing windows for each neighboring radio node.

21. The serving radio node according to claim 19, wherein each sounding and sensing window has a same or different number of sounding resource and sensing elements.

22. The serving radio node according to claim 19, wherein each sounding and sensing window has consecutive or non-consecutive sounding and sensing resource elements.

23. The serving radio node according to claim 18, further comprising:

an allocating unit to allocate one or more sounding and sensing resource elements indicated by the received sounding and sensing related configuration, to the one or more radio links.

24. The serving radio node according to claim 18, the sensor to perform the sensing in all sensing resource elements indicated by the received sounding and sensing related configuration.

25. The serving radio node according to claim 18, the sensor to further perform the sensing in a part or all sounding resource elements indicated by the received sounding and sensing related configuration.

26. The serving radio node according to claim 18, further comprising:

an adjusting unit to adjust a sensing period for each radio link of the one or more radio links based on the received sounding and sensing related configuration and one or more predefined parameters, when a number of RX RF chains of the serving radio node is smaller than a number of all radio links for which the serving node serves as receivers, and

wherein the sensor is further to sense, through a RX RF chain of the serving radio node configured for each radio link of the one or more radio links, all sounding signals in a direction of the radio link, based on the adjusted sensing period.

27-35. -35. (canceled)