Methods and apparatus for adapting femtocell properties based on changes detected in network topology

Patent metadata

Field	Value
Publication number	US-9497639-B2
Application number	US-201313783655-A
Country	US
Kind code	B2
Filing date	Mar 4, 2013
Priority date	Mar 6, 2012
Publication date	Nov 15, 2016
Grant date	Nov 15, 2016

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.

First claim

What is claimed is:

1. A wireless communication method operable by a network entity, the method comprising:
detecting a change in a network topology change associated with a network node, the network topology change in the network topology indicating whether the network node is a new cell deployment, a removed node, an unreliable node, or a node with handover unreliability;
determining an availability factor of the network node based on the change in the network topology change;
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 change in the network topology and on at least one adjusted resource parameter of the network entity;
in response to detecting, by the network entity, a disappearance of a given cell different than the network entity, delaying an update to the network topology based on parameters for the given cell; and
modifying a transmit power, a frequency resource usage, a time resource usage, or any combination thereof associated with the at least one adjusted resource parameter at a slow rate when the at least one mobile entity is connected and at a normal rate when the at least one mobile entity is not connected.

2. 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.

3. 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, or any combination thereof.

4. 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.

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

6. A wireless communication apparatus comprising:
at least one processor configured to:
detect a change in a network topology change associated with a network node, the change in the network topology change indicating whether the network node is a new cell deployment, a removed node, an unreliable node, or a node with handover unreliability,
determine an availability factor of the network node based on the change in the network topology change,
set mobility parameters of at least one mobile entity serviced by a network entity and mitigating mitigate interference with at least one neighboring network node based at least in part on the change in the network topology and on at least one adjusted resource parameter of the network entity,
in response to detecting, by the wireless communication apparatus, a disappearance of a given cell different than the wireless communication apparatus, delay an update to the network topology based on parameters for the given cell,
modify a transmit power, a frequency resource usage, a time resource usage, or any combination thereof associated with the at least one adjusted resource parameter at a slow rate when the at least one mobile entity is connected and at a normal rate when the at least one mobile entity is not connected; and
a memory coupled to the at least one processor for storing data.

7. The apparatus of claim 6 , 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.

8. The apparatus of claim 6 , 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, or any combination thereof.

9. The apparatus of claim 6 , 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.

10. The apparatus of claim 6 , wherein the change in the network topology change is detected at a network listen module.

11. A wireless communication apparatus comprising:
means for detecting a change in a network topology change associated with a network node, the change in the network topology change indicating whether the network node is a new cell deployment, a removed node, an unreliable node, or a node with handover unreliability;
means for determining an availability factor of the network node based on the change in the network topology change;
means for setting mobility parameters of at least one mobile entity serviced by a network entity and mitigating interference with at least one neighboring network node based at least in part on the change in the network topology and on at least one adjusted resource parameter of the network entity;
in response to detecting, by the wireless communication apparatus, a disappearance of a given cell different than the wireless communication apparatus, means for delaying an update to the network topology based on parameters for the given cell; and
means for modifying a transmit power, a frequency resource usage, a time resource usage, or any combination thereof associated with the at least one adjusted resource parameter at a slow rate when the at least one mobile entity is connected and at a normal rate when the at least one mobile entity is not connected.

12. The apparatus of claim 11 , 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.

13. The apparatus of claim 11 , 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, or any combination thereof.

14. The apparatus of claim 11 , 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.

15. The apparatus of claim 11 , wherein the change in the network topology change is detected at a network listen module.

16. A non-transitory computer readable medium comprising code for causing at least one computer to:
detect a change in a network topology change associated with a network node, the change in the network topology change indicating whether the network node is a new cell deployment, a removed node, an unreliable node, or a node with handover unreliability;
determine an availability factor of the network node based on the change in the network topology change;
set mobility parameters of at least one mobile entity serviced by a network entity and mitigating mitigate interference with at least one neighboring net

Assignees

• Qualcomm Inc

Inventors

• Meshkati Farhad
• Tokgoz Yeliz
• Patel Chirag Sureshbhai
• Tinnakornsrisuphap Peerapol
• Yavuz Mehmet

Classifications

• H04W16/10

  Dynamic resource partitioning · CPC title

• H04W52/143

  Downlink power control · CPC title

• H04W52/386

  centralized, e.g. when the radio network controller or equivalent takes part in the power control · CPC title

• H04W52/244

  Interferences in heterogeneous networks, e.g. among macro and femto or pico cells or other sector / system interference [OSI] · CPC title

• H04W36/0083

  Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists · CPC title