Long term evolution scheduler to mitigate interference

• US 10,039,116 B1
• Filed: 08/22/2014
• Issued: 07/31/2018
• Est. Priority Date: 04/02/2012
• Status: Expired due to Fees

• Current Assignee: T-Mobile Innovations LLC (Deutsche Telekom AG)
• Original Assignee: Sprint Communications Company LP (Deutsche Telekom AG)
• Inventors: Christian, Brett Lee, Kazeminejad, Saied
• Primary Examiner(s): Kizou, Hassan
• Assistant Examiner(s): Belur, Deepa
• Application Number:
  US14/466,590
• Time in Patent Office: 1,439 Days
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0069 Allocation based on distance or geographical location allocation based on terminal or device properties in general, H04W72/51
• CPC Class Codes: H04L 5/0073 Allocation arrangements that take into account other cell interferences for intercell interference mitigation or co-ordination in orthogonal multiplex systems H04J11/005
• CPC Class Codes: H04W 72/541 using the level of interference

Abstract

A computer-implemented method, system, and computer-readable storage media for scheduling physical resource blocks (PRBs) comprises a communication radio access network (RAN) base station with a scheduler that assigns one or more PRBs to a communication channel of a user device. The PRBs can be prioritized according to a radio frequency (rf) interference level across the contiguous band of PRBs. The rf interference level of a communication channel of the user device can be monitored by the scheduler. The scheduler assigns one or more of the prioritized PRBs according to the rf interference level of the PRBs and according to the rf interference level of the communication channel of the user device.

Claims

1. A base station for scheduling physical resource blocks, the base station having memory, processor, and data storage components, and further comprising:

a scheduler that assigns a plurality of physical resource blocks (PRB) of a first frequency spectrum of PRBs that is separated from an adjacent frequency spectrum of PRBs by an interference guard block having a frequency range,

wherein the plurality of PRBs comprises;

a first PRB at a center of the first frequency spectrum of PRBs, the first PRB having a low radio frequency (rf) interference with respect to at least one PRB of the adjacent frequency spectrum of PRBs, and

a second PRB at an edge of the first frequency spectrum of PRBs having a high rf interference with respect to the at least one PRB of the adjacent frequency spectrum of PRBs,

wherein the scheduler assigns the first PRB at the center of the first frequency spectrum of PRBs to a first communication channel of a first user device having a high rf interference level,

wherein the scheduler assigns the second PRB at the edge of the first frequency spectrum of PRBs to a second communication channel of a second user device having a low rf interference level, and

wherein the scheduler determines the frequency range of the interference guard block based on the assigned first and second PRBs, thereby minimizing the frequency range of the interference guard block.

2. The base station of claim 1, wherein the base station accesses an enhanced Node B (eNode B) network.

3. The base station of claim 1, wherein the base station accesses a long term evolution (LTE) network.

4. A base station for scheduling physical resource blocks, the base station having memory, processor, and data storage components, and further comprising:

a scheduler that assigns a first frequency spectrum of physical resource blocks (PRB) to minimize a frequency range of a guard bock, wherein the first frequency spectrum of PRBs comprises a first zone of PRBs located near a first edge of the first frequency spectrum, the first edge of the first spectrum defined the interference guard block,

wherein the first zone of PRBs has a high radio frequency (rf) interference with respect to a second zone of PRBs located near a second edge of an adjacent frequency spectrum of PRBs, the second edge of the adjacent frequency spectrum defined by the interference guard block,

wherein the scheduler assigns the first zone of PRBs located near the first edge of the first frequency spectrum to a communication channel of a user device having a low rf interference level, and

wherein the scheduler determines the frequency range of the interference guard block based on the assigned first zone of PRBs, thereby minimizing the frequency range of the guard block.

5. The base station of claim 4, wherein the base station accesses an enhanced Node B (eNode B) network.

6. The base station of claim 4, wherein the base station accesses a long term evolution (LTE) network.

7. A computer-implemented method of scheduling physical resource blocks using a computing system having memory, processor, and data storage components, the computer-implemented method comprising:

determining that a first frequency spectrum of physical resource blocks (PRBs) comprises a first zone of PRBs located near a center of the first frequency spectrum;

determining that the first zone of PRBs have a low radio frequency (rf) interference with respect to at least a second zone of PRBs of an adjacent frequency spectrum of PRBs that is separated from the first frequency spectrum of PRBs by an interference guard block having a frequency range; and

assigning, via a scheduler of a base station, the first zone of PRBs located near the center of the first frequency spectrum of PRBs to a first user device experiencing a high rf interference level; and

determining the frequency range of the interference guard block in response to the assigning of the first zone of PRBs.

8. The computer-implemented method of claim 7, wherein the rf interference level of the assigned first zone of PRBs is inversely proportional to the rf interference level experienced by the first user device.

9. The computer-implemented method of claim 7, wherein the assigning occurs during an uplink communication.

10. The computer-implemented method of claim 7, wherein the assigning occurs during a downlink communication.

11. The computer-implemented method of claim 7, wherein the assigning comprises:

assigning a second zone of PRBs located near an edge of the first frequency spectrum of PRBs having a low interference level with respect to the adjacent frequency spectrum of PRBs to second device experiencing a low rf interference level, the edge of the first frequency spectrum of PRBs defined by the interference guard block.

12. The computer-implemented method of claim 7, wherein the high radio frequency interference level experienced by the first user device comprises a device operating at an edge of a cell service.

13. The computer-implemented method of claim 7, further comprising:

prioritizing a plurality of physical resource blocks within the first zone according to their respective rf interference levels.

14. The computer-implemented method of claim 7, further comprising:

monitoring the rf interference level of a communication channel of the user device.