METHODS AND APPARATUS FOR ADAPTING FEMTOCELL PROPERTIES BASED ON CHANGES DETECTED IN NETWORK TOPOLOGY

• US 20130235759A1
• Filed: 03/04/2013
• Published: 09/12/2013
• Est. Priority Date: 03/06/2012
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Meshkati, Farhad, Tokgoz, Yeliz, Patel, Chirag Sureshbhai, Tinnakornsrisuphap, Peerapol, Yavuz, Mehmet
• Granted Patent: US 9,497,639 B2
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: H04W 16/10 Dynamic resource partitioning
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 36/0083 Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
• CPC Class Codes: H04W 36/00837 Determination of triggering parameters for hand-off
• CPC Class Codes: H04W 52/143 Downlink power control
• CPC Class Codes: H04W 52/244 Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI]
• CPC Class Codes: H04W 52/386 centralized, e.g. when the radio network controller or equivalent takes part in the power control
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

Methods and apparatus are provided for adapting femtocell properties based on changes detected in network topology. A method includes detecting a network topology change associated with a network node. The method includes determining an availability factor of the network node based on the topology change. The method includes setting mobility parameters of at least one mobile entity serviced by the network entity and mitigating interference with at least one neighboring network node based at least in part on the network topology and on at least one adjusted resource parameter of the network entity.

Claims

1. A wireless communication method operable by a network entity, the method comprising:

detecting a network topology change associated with a network node;

determining an availability factor of the network node based on the topology change; and

setting mobility parameters of at least one mobile entity serviced by the network entity and mitigating interference with at least one neighboring network node based at least in part on the network topology and on at least one adjusted resource parameter of the network entity.

2. The method of claim 1, wherein the network topology change indicates the network node is a new cell deployment, a removed node, an unreliable node, or a node with handover unreliability.

3. The method of claim 1, wherein the mobility parameters facilitate coordination of a handoff, a cell reselection, or a page of the at least one mobile entity by the network entity based at least in part on the network topology.

4. The method of claim 1, further comprising determining the at least one adjusted resource parameter based on the determined availability factor, wherein the at least one adjusted resource parameter comprises at least one of an adjusted transmit power, frequency resource, or time resource parameter.

5. The method of claim 1, further comprising updating the network topology based on further detected parameters for the at least one neighboring network node, wherein updating comprises:

in response to detecting a new cell, updating the network topology based on parameters for the detected new cell; and

in response to detecting a disappearance of a given cell, delaying an update to the network topology based on parameters for the disappeared given cell.

6. The method of claim 1, further comprising modifying a transmit power, a frequency resource usage, or a time resource usage associated with the at least one adjusted resource parameter at a slow rate when the at least one mobile entity is connected, or modifying the transmit power, the frequency resource usage, or the time resource usage associated with the at least one adjusted resource parameter at a normal rate when the least one mobile entity is not connected.

7. The method of claim 1, wherein the network topology change is detected at a network listen module.

8. A wireless communication apparatus comprising:

at least one processor configured to;

detect a network topology change associated with a network node,

determine an availability factor of the network node based on the topology change, and

set mobility parameters of at least one mobile entity serviced by the network entity and mitigating interference with at least one neighboring network node based at least in part on the network topology and on at least one adjusted resource parameter of the network entity; and

a memory coupled to the at least one processor for storing data.

9. The apparatus of claim 8, wherein the network topology change indicates the network node is a new cell deployment, a removed node, an unreliable node, or a node with handover unreliability.

10. The apparatus of claim 8, wherein the mobility parameters facilitate coordination of a handoff, a cell reselection, or a page of the at least one mobile entity by the network entity based at least in part on the network topology.

11. The apparatus of claim 8, wherein the at least one processor is further configured to determine the at least one adjusted resource parameter based on the determined availability factor, wherein the at least one adjusted resource parameter comprises at least one of an adjusted transmit power, frequency resource, or time resource parameter.

12. The apparatus of claim 8, wherein the at least one processor is further configured to update the network topology based on further detected parameters for the at least one neighboring network node, wherein updating comprises:

in response to detecting a new cell, updating the network topology based on parameters for the detected new cell; and

in response to detecting a disappearance of a given cell, delaying an update to the network topology based on parameters for the disappeared given cell.

13. The apparatus of claim 8, wherein the at least one processor is further configured to modify a transmit power, a frequency resource usage, or a time resource usage associated with the at least one adjusted resource parameter at a slow rate when the at least one mobile entity is connected, or to modify the transmit power, the frequency resource usage, or the time resource usage associated with the at least one adjusted resource parameter at a normal rate when the least one mobile entity is not connected.

14. The apparatus of claim 8, wherein the network topology change is detected at a network listen module.

15. A wireless communication apparatus comprising:

means for detecting a network topology change associated with a network node,

means for determining an availability factor of the network node based on the topology change, and

means for setting mobility parameters of at least one mobile entity serviced by the network entity and mitigating interference with at least one neighboring network node based at least in part on the network topology and on at least one adjusted resource parameter of the network entity.

16. The apparatus of claim 15, wherein the network topology change indicates the network node is a new cell deployment, a removed node, an unreliable node, or a node with handover unreliability.

17. The apparatus of claim 15, wherein the mobility parameters facilitate coordination of a handoff, a cell reselection, or a page of the at least one mobile entity by the network entity based at least in part on the network topology.

18. The apparatus of claim 15, further comprising means for determining the at least one adjusted resource parameter based on the determined availability factor, wherein the at least one adjusted resource parameter comprises at least one of an adjusted transmit power, frequency resource, or time resource parameter.

19. The apparatus of claim 15, further comprising means for updating the network topology based on further detected parameters for the at least one neighboring network node, wherein updating comprises:

in response to detecting a new cell, updating the network topology based on parameters for the detected new cell; and

in response to detecting a disappearance of a given cell, delaying an update to the network topology based on parameters for the disappeared given cell.

20. The apparatus of claim 15, further comprising means for modifying a transmit power, a frequency resource usage, or a time resource usage associated with the at least one adjusted resource parameter at a slow rate when the at least one mobile entity is connected, or modifying the transmit power, the frequency resource usage, or the time resource usage associated with the at least one adjusted resource parameter at a normal rate when the least one mobile entity is not connected.

21. The apparatus of claim 15, wherein the network topology change is detected at a network listen module.

22. A computer program product comprising:

computer readable medium comprising code for causing at least one computer to;

detect a network topology change associated with a network node,

determine an availability factor of the network node based on the topology change, and

set mobility parameters of at least one mobile entity serviced by the network entity and mitigating interference with at least one neighboring network node based at least in part on the network topology and on at least one adjusted resource parameter of the network entity.

23. The computer program product of claim 22, wherein the network topology change indicates the network node is a new cell deployment, a removed node, an unreliable node, or a node with handover unreliability.

24. The computer program product of claim 22, wherein the mobility parameters facilitate coordination of a handoff, a cell reselection, or a page of the at least one mobile entity by the network entity based at least in part on the network topology.

25. The computer program product of claim 22, wherein the computer readable medium further comprises code for causing the at least one computer to determine the at least one adjusted resource parameter based on the determined availability factor, wherein the at least one adjusted resource parameter comprises at least one of an adjusted transmit power, frequency resource, or time resource parameter.

26. The computer program product of claim 22, wherein the computer readable medium further comprises code for causing the at least one computer to update the network topology based on further detected parameters for the at least one neighboring network node, wherein updating comprises:

in response to detecting a new cell, updating the network topology based on parameters for the detected new cell; and

in response to detecting a disappearance of a given cell, delaying an update to the network topology based on parameters for the disappeared given cell.

27. The computer program product of claim 22, wherein the computer readable medium further comprises code for causing the at least one computer to modify a transmit power, a frequency resource usage, or a time resource usage associated with the at least one adjusted resource parameter at a slow rate when the at least one mobile entity is connected, or modifying the transmit power, the frequency resource usage, or the time resource usage associated with the at least one adjusted resource parameter at a normal rate when the least one mobile entity is not connected.

28. The computer program product of claim 22, wherein the network topology change is detected at a network listen module.