MULTIMODE BASE STATION

• US 20170181179A1
• Filed: 03/07/2017
• Published: 06/22/2017
• Est. Priority Date: 04/05/2011
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Somerville, Fiona Clare Angharad, Whinnett, Nicholas William
• Granted Patent: US 10,856,302 B2
• Time in Patent Office: Days
• CPC Class Codes: H04W 36/008375 based on historical data
• CPC Class Codes: H04W 48/20 Selecting an access point
• CPC Class Codes: H04W 72/52 based on load
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 84/045 using private Base Stations, e.g. femto Base Stations, home Node B
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

A method of controlling admission of a user equipment to a cell of a multi-mode base station, being a base station arranged to operate as a plurality of cells, the plurality of cells comprising at least a first cell and a second cell, and the method comprising: determining information relating to the first cell, and controlling admission of a user equipment to the second cell in dependence on the information relating to the first cell.

Claims

1. A method of controlling admission of a user equipment to a cell of a multi-mode base station, the multi-mode base station configured to operate as a first cell and a second cell representing the same geographical node of the network, the method comprising:

receiving, from a user equipment (UE) a cell access request for admission of the UE to the second cell;

consulting statistics of a history of past connections of the UE stored at a radio resource management entity of the second cell to determine an expected quality of service for the UE, the statistics including past behavior when the UE was connected to the first cell;

performing an evaluation comprising a prediction of suitability of the second cell based on the history statistics and independently of a quality of service requested by the UE; and

determining whether to admit the UE to the second cell based on both the requested quality of service and the second cell suitability prediction.

2. The method of claim 1, wherein the second cell has a different cell type or a different cell size relative to the first cell.

3. The method of claim 1, wherein the determination of whether to continue admitting the UE to the second cell depends upon a load of the second cell.

4. The method of claim 1, wherein the statistics comprise past behavior accumulated over a period of time when the UE was connected to the second cell.

5. A computer program product embodied on a non-transient computer-readable medium, the computer program comprising program instructions arranged, upon execution by a processor of the multi-mode base station to cause the processor to perform the method of claim 1.

6. A radio resource management entity operable in a multi-mode base station having a first cell and a second cell corresponding to a given geographical node of a wireless network, the radio resource management entity comprising a processor configured to:

receive, from a user equipment (UE) a cell access request for admission of the UE to the second cell;

determine statistics of a history of past connections of the UE available to a radio resource management entity of the second cell based upon information relevant to quality of service in the first cell being available to the radio resource management entity of the second cell;

determine a prediction of performance of the UE in the first cell, the prediction of performance being based on the historical statistics and being independent of a requested quality of service; and

determine whether to continue admitting the UE to the second cell based on the prediction of performance for the first cell and the requested quality of service, wherein the second cell has a different cell type or a different cell size relative to the first cell.

7. Radio resource management entity as claimed in claim 6, wherein determination of the prediction of performance comprises:

a prediction of performance of the UE in the second cell, and wherein the determination whether to continue admitting the UE to the second cell is further based on the prediction of performance of the UE in the second cell.

8. Radio resource management entity as claimed in claim 6, wherein the performance prediction depends upon a total number of UEs supported by a respective one of the first cell and the second cell.

9. Radio resource management entity as claimed in claim 6, wherein the first cell and the second cell are configured to operate according to a same radio access technology, and wherein the second cell is configured to operate in a different sub-band relative to the first cell.

10. A computer program product embodied on a non-transient computer-readable medium, the computer program for controlling cell admission of a user equipment (UE) to a multi-mode base station having a first cell and a second cell representing a same geographical node of a wireless network, the computer program comprising program instructions arranged, upon execution by a processor of the multi-mode base station to cause the processor to:

receive, from the UE, a cell access request for admission to the second cell;

consult statistics stored at a radio resource management entity of the multi-mode base station, the statistics representing a history of past connections of the UE to the first cell relevant to an expected quality of service of the UE in the second cell;

determine a predicted suitability of the second cell based on the historical statistics independently of considering if a requested quality of service condition is fulfilled; and

determine whether to continue admitting the UE to the second cell based on the predicted suitability and based on a cell load of at least one of the first cell or the second cell, the cell load including a number of UEs currently serviced by the respective cell.

11. The computer program product of claim 10, wherein the first cell and the second cell have different geographical ranges.

12. The computer program product of claim 10, wherein the first cell and the second cell correspond to different radio access technologies.

13. The computer program product of claim 10, wherein the cell load comprises a total number of UEs supported or a number of UEs supported each sub-frame by hardware resources of the respective cell.

14. The computer program product of claim 10, wherein the statistics comprise average values of cell parameters over respective predetermined time periods.

15. The computer program product of claim 10, wherein the determination comprises refusing admission of the UE to the second cell in response to the cell access request.

16. The computer program product as claimed in claim 10, wherein the statistics of the history of past connections comprises statistics representing a predetermined period of a history of past connections of the UE to the second cell.

17. The computer program product as claimed in claim 10, comprising:

admitting the UE to the second cell as a result of the determining.

18. The computer program product as claimed in claim 10, comprising:

instructing the UE to connect to an alternative cell corresponding to the first cell or to a cell of a different base station when it is determined not to continue admitting the UE to the second cell.

19. The computer program product as claimed in claim 10, wherein the determining whether to continue admitting the UE to the second cell based is further based on the requested quality of service requirement for the UE.

20. The computer program product as claimed in claim 10, wherein the first cell and the second cell correspond to a same radio access technologies in different sub-bands.

21. The computer program product as claimed in claim 10, wherein the determination of whether to continue admitting the LIE to the second cell is based on the cell load of the first cell and the second cell.