Intercell interference coordination for radio resource control

• US 9,775,067 B2
• Filed: 10/20/2008
• Issued: 09/26/2017
• Est. Priority Date: 10/20/2008
• Status: Active Grant

• Current Assignee: Telefonaktiebolaget LM Ericsson
• Original Assignee: Telefonaktiebolaget LM Ericsson
• Inventors: Dimou, Konstantinos, Fodor, Gabor, Furuskr, Anders, Mller, Walter, Simonsson, Arne
• Primary Examiner(s): Hammonds, Marcus
• Application Number:
  US13/124,955
• Publication Number:
  US 20110230200A1
• Time in Patent Office: 3,263 Days
• Field of Search: 455 631- 633, 4551142-1143, 455296, 455445-4522, 455509, 370431-463, 370329, 370341, 370348, 3703954
• CPC Class Codes: H04L 5/0032 Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
• CPC Class Codes: H04W 28/00 Network traffic management; Network resource management
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A system includes a first device (110) to classify data as one of a control message or a non-control message, and provide the classification of the data to a second device (122). The second device (122) receives the classification of the data, receives information associated with a resource (460), calculates an expected interference associated with the resource (460) based on the information associated with the resource (460), and allocates, to the resource (460), data classified as a control message when the expected interference corresponds to a low expected interference.

Claims

1. A method implemented by a base station in a wireless communication system that includes a plurality of cells, the method comprising:

calculating expected levels of inter-cell interference associated with two or more different resources in a cell available for wireless communication of both control messages and user data, wherein the calculating comprises one or both of;

calculating the expected levels of inter-cell interference using a fractional load Inter-cell Interference Coordination (ICICI mechanism; and

calculating the expected levels of inter-cell interference using a frequency reuse ICIC mechanism;

determining that one of the resources in the cell is associated with a level of expected inter-cell interference having a value less than a value of an expected inter-cell interference associated with another of the two or more different resources;

allocating data classified as a control message to the determined resource for communication of that data in said cell; and

transmitting or receiving said data on the determined resource.

2. The method of claim 1, wherein the control message comprises a Radio Resource Control (RRC) message.

3. The method of claim 1, wherein said resources comprise scheduled shared channels.

4. The method of claim 1, further comprising:

classifying said data as one of an RRC message or a non-RRC message;

collecting information associated with said resources; and

calculating the expected levels of inter-cell interference associated with the resources based on said information.

5. The method of claim 1, wherein said resources comprise traffic channels.

6. The method of claim 1, wherein the control message comprises a Radio Resource Control (RRC) message, and wherein said allocating comprises allocating an RRC resource set and a non-RRC resource set to a user equipment for data transmission in said cell, said RRC resource set including the determined resource.

7. The method of claim 1, wherein the control message comprises a Radio Resource Control (RRC) message, and wherein said allocating comprises mapping said data to one or more resources included in an RRC resource set, said RRC resource set including said determined resource.

8. The method of claim 1 wherein the identified resource is associated with a level of expected inter-cell interference that is lower than a desired threshold.

9. A base station comprising:

an Inter-cell Interference Coordination (ICIC) mechanism configured to;

collect information associated with two or more different resources in a cell available for wireless communication of both control messages and user data,

calculate expected levels of inter-cell interference associated with the different resources, based on the collected information, by using one or both of a fractional load ICIC mechanism and a frequency reuse ICIC mechanism, and

determine that one of the resources is associated with a level of expected inter-cell interference having a value less than a value of an expected inter-cell interference associated with another of the two or more different resources; and

a scheduler circuit configured to;

receive a classification of data describing data as being one of a control message or a non-control message, and

allocate data classified as a control message to the determined resource for communication of that data in said cell.

10. The base station of claim 9, further comprising a classifier circuit configured to generate said classification to describe data as being one of a Radio Resource Control (RRC) message or a non-RRC message.

11. The base station of claim 9, wherein the scheduler circuit is configured to allocate an RRC resource set and a non-RRC resource set to a user equipment for communication in said cell, the RRC resource set including the determined resource.

12. The base station of claim 9, wherein the scheduler circuit is configured to map data classified as a RRC message to one or more resources included in an RRC resource set, said RRC resource set including said determined resource.

13. The base station of claim 9, wherein said resources comprises traffic channels.

14. The base station of claim 9, wherein data classified as an RRC message handles control plane signaling of a Layer 3 associated with the base station.