Method and apparatus of supporting wireless femtocell clusters

• US 9,019,942 B2
• Filed: 01/25/2011
• Issued: 04/28/2015
• Est. Priority Date: 08/16/2010
• Status: Expired due to Fees

• Current Assignee: Open Invention Network LLC
• Original Assignee: UbeeAirwalk, Inc. (Hon Hai Precision Industry Co., Ltd.)
• Inventors: Osborn, Christopher Martin Edward, Seo, Seong Ju, Choi, Kyungsik
• Primary Examiner(s): KHAJURIA, SHRIPAL K
• Application Number:
  US13/012,918
• Publication Number:
  US 20120039314A1
• Time in Patent Office: 1,554 Days
• Field of Search: 370/338, 370/328
• US Class Current: 370/338
• CPC Class Codes: H04W 16/18 Network planning tools
• CPC Class Codes: H04W 24/02 Arrangements for optimising operational condition
• CPC Class Codes: H04W 60/00 Affiliation to network, e.g. registration; Terminating affiliation with the network, e.g. de-registration
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B

Abstract

A method of operating a femtocell network cluster is disclosed. One example method of operating the femtocell network cluster may include certain operations, such as, selecting a master femtocell access point among various femtocell access points operating on the femtocell network cluster and updating a master table to include the master femtocell access point in the master table neighbor list. Other operations may include transmitting the master table to each of the femtocell access points informing them of the identity of the master femtocell access point. The tables may be maintained by all of the femtocell access points operating on the network.

Claims

1. A method of operating a femtocell network cluster, the method comprising:

selecting a master femtocell access point among a plurality of femtocell access points operating on the femtocell network cluster;

updating a master table to include the master femtocell access point in the master table neighbor list;

transmitting the master table from the master femtocell access point to each of the plurality of femtocell access points informing them of the identity of the master femtocell access point;

maintaining the master table by the master femtocell access point;

identifying a new femtocell access point unidentified by the master table;

transmitting an IP address identifying the master femtocell access point and a cluster identifier to the new femtocell access point;

receiving a register message at the master femtocell access point from the new femtocell access point;

adding the new femtocell access point to the master table to create an updated master table; and

communicating the updated master table by the master femtocell access point to the plurality of femtocell access points.

2. The method of claim 1, wherein the selecting the master femtocell access point comprises setting the IP address of the master femtocell access point and creating the cluster identifier for the femtocell network cluster.

3. The method of claim 2, wherein transmitting the master table to each of the plurality of femtocell access points informing them of the identity of the master femtocell access point comprises transmitting the IP address of the master femtocell access point and the cluster identifier of the femtocell network cluster.

4. The method of claim 1, further comprising:

periodically transmitting a synchronization update message to each of the plurality of femtocell access points including a copy of the master table indicating whether any changes in the femtocell network cluster have occurred.

5. The method of claim 4, wherein the changes in the femtocell network cluster comprise any additions or deletions to the plurality of femtocell access points operating in the femtocell network cluster.

6. An apparatus configured to operate a femtocell network cluster, the apparatus comprising:

a processor configured to select a master femtocell access point among a plurality of femtocell access points operating on the femtocell network cluster, and to update a master table to include the master femtocell access point in the master table neighbor list;

a transmitter configured to transmit the master table to each of the plurality of femtocell access points informing them of the identity of the master femtocell access point;

wherein the master femtocell access point maintains the master table;

wherein the master femtocell access point communicates the updated master table to the plurality of femtocell access points;

wherein a new femtocell access point is unidentified by the master table;

wherein the transmitter is further configured to transmit an IP address identifying the master femtocell access point and a cluster identifier to the new femtocell access point; and

a receiver configured to receive a register message at the master femtocell access point from the new femtocell access point; and

wherein the new femtocell access point is added to the new master table to create an updated master table.

7. The apparatus of claim 6, wherein during the selection of the master femtocell access point the processor is further configured to set the IP address of the master femtocell access point and a cluster identifier for the femtocell network cluster and store the values in a memory.

8. The apparatus of claim 7, wherein the transmitter transmits the master table to each of the plurality of femtocell access points to inform them of the identity of the master femtocell access point and is further configured to transmit the IP address of the master femtocell access point and the cluster identifier of the femtocell network cluster.

9. The apparatus of claim 6, wherein the transmitter is further configured to periodically transmit a synchronization update message to each of the plurality of femtocell access points including a copy of the master table indicating whether any changes in the femtocell network cluster have occurred.

10. The apparatus of claim 9, wherein the changes in the femtocell network cluster comprise any additions or deletions to the plurality of femtocell access points operating in the femtocell network cluster.

11. A non-transitory computer readable storage medium configured to store instructions that when executed by a processor, cause the processor to operate a femtocell network cluster, the processor being further configured to perform:

selecting a master femtocell access point among a plurality of femtocell access points operating on the femtocell network cluster;

updating a master table to include the master femtocell access point in the master table neighbor list;

transmitting the master table to each of the plurality of femtocell access points informing them of the identity of the master femtocell access point;

maintaining the master table by the master femtocell access point;

identifying a new femtocell access point unidentified by the master table;

transmitting an IP address identifying the master femtocell access point and a cluster identifier to the new femtocell access point;

receiving a register message at the master femtocell access point from the new femtocell access point;

adding the new femtocell access point to the master table to create an updated master table; and

communicating the updates of the master table to the plurality of femtocell access points.

12. The non-transitory computer readable storage medium of claim 11, wherein the selecting the master femtocell access point comprises setting the IP address of the master femtocell access point and creating a cluster identifier for the femtocell network cluster.

13. The non-transitory computer readable storage medium of claim 12, wherein transmitting the master table to each of the plurality of femtocell access points informing them of the identity of the master femtocell access point comprises transmitting the IP address of the master femtocell access point and the cluster identifier of the femtocell network cluster.

14. The non-transitory computer readable storage medium of claim 11, further comprising:

periodically transmitting a synchronization update message to each of the plurality of femtocell access points including a copy of the master table indicating whether any changes in the femtocell network cluster have occurred.

15. The non-transitory computer readable storage medium of claim 14, wherein the changes in the femtocell network cluster comprise any additions or deletions to the plurality of femtocell access points operating in the femtocell network cluster.