Communication Resource Allocation Method of Base Station

• US 20080225752A1
• Filed: 08/23/2006
• Published: 09/18/2008
• Est. Priority Date: 08/24/2005
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Lee, Hyo-Jin, Ahn, Jae-Young, Lee, Hee-Soo, Kwon, Jae-Kyun
• Granted Patent: US 8,213,335 B2
• Time in Patent Office: Days
• US Class Current: 370/254
• CPC Class Codes: H04W 16/02 Resource partitioning among network components, e.g. reuse partitioning
• CPC Class Codes: H04W 72/51 based on terminal or device properties
• CPC Class Codes: H04W 72/54 based on quality criteria

Abstract

A communication resource allocation method for solving resource request imbalance content in a cell is provided. Considering a propagation environment, the base station allocates a whispering resource to a whispering area, the whispering resource being one part of the communication resource and the whispering area being a peripheral area of the first base station, and allocates a speaking resource to a speaking area, the speaking resource being other parts of the communication resource and the speaking area being a border area of a cell. When the resource request of the whispering area is increased, the base station further allocates a part of the speaking resource to the whispering area or increases a ratio of the whispering resource. When the resource request of the speaking area is increased, the base station controls a threshold value for identifying the whispering and speaking areas or increases a ratio of the speaking resource.

Claims

1. A communication resource allocation method in which a first base station allocates a communication resource, comprising:

allocating a whispering resource to a whispering area, the whispering area being a peripheral area of the first base station and the whispering resource having a resource area changed in the communication resource with the lapse of time; and

allocating a resource corresponding to a whispering resource of a second base station to a speaking area, the speaking area being included in the first base station and being a border area between the first and second base stations.

2. The communication resource allocation method of claim 1, wherein the whispering resource of the second base station is varied depending on a resource area in the communication resource.

5. The communication resource allocation method of claim 1, further comprising obtaining a path loss difference value, the path loss difference value being a difference between the first and second path loss values which are respectively given between the first base station and the terminal and between the second base station and the terminal;

determining the terminal-including area as the whispering area when the path loss difference value is greater than a predetermined threshold value; and

determining the terminal-including area as the speaking area when the path loss difference value is less than the predetermined threshold value.

6. The communication resource allocation method of claim 5, wherein obtaining the path loss difference value comprises

receiving the first and second path loss values from the terminal, and

calculating the path loss difference value which is the difference between the first and second path loss values.

7. The communication resource allocation method of claim 5, wherein obtaining the path loss difference value comprises receiving the path loss difference value from the terminal.

8. The communication resource allocation method of claim 1, further comprising:

obtaining a path loss value between the first base station and the terminal;

determining the terminal-including area as the whispering area when the path loss value is less than a predetermined threshold value; and

determining the terminal-including area as the speaking area when the path loss value is greater than the predetermined threshold value.

9. The communication resource allocation method of claim 1, comprising

obtaining a path loss value between the second base station and the terminal;

determining the terminal-including area as the whispering area when the path loss value is greater than a predetermined threshold value; and

determining the terminal-including area as the speaking area when the path loss value is less than the predetermined threshold value.

3. A communication resource allocation method in which a first base station allocates a communication resource, comprising:

allocating a whispering resource to a whispering area, the whispering resource being a part of the communication resource and the whispering area being a peripheral area of the first base station;

allocating a speaking resource corresponding to a whispering resource of a second base station to a speaking area, the speaking area being included in the first base station and being a border area between the first and second base stations; and

further allocating a part of the speaking resource to the whispering area when the request resource of the whispering area is greater than the whispering resource allocated to the whispering area.

4. A communication resource allocation method in which a first base station allocates a communication resource, comprising:

allocating a whispering resource to a whispering area, the whispering resource being a part of the communication resource and the whispering area being a peripheral area of the first base station;

allocating a speaking resource corresponding to a whispering resource of a second base station to a speaking area, the speaking area being included in the first base station and being a border area between the first and second base stations; and

increasing a ratio of the allocated whispering resource of the whispering area when the resource request of the whispering area is increased.

10. A communication resource allocation method in which a first base station allocates a communication resource, comprising:

obtaining a path loss difference value, the path loss difference value being a difference between first and second path loss values which are respectively given between a first base station and a terminal and between a second base station and the terminal;

allocating a first resource to a whispering area in which the path loss difference value is greater than a predetermined threshold value, the first resource being a part of the communication resource;

allocating a second resource to a speaking area in which the path loss difference value is less than the predetermined threshold value, the second resource being a whispering resource of the second base station; and

decreasing the threshold value when the resource request of the speaking area is increased.

11. The communication resource allocation method of claim 10, further comprising applying a modulation or encoding method to a terminal leaving a speaking area according to a decrease of the threshold value, in which an error rate is lower than the error rate which is given before the decrease of the threshold value.

12. The communication resource allocation method of claim 10, further comprising controlling the terminal so that the terminal leaving the speaking area may have a decreased transmit power as the threshold value decreases.

13. The communication resource allocation method of claim 10, further comprising providing decrease information of the threshold value to the second base station so that the second base station may utilize the decrease information of the threshold value to adaptive modulation and coding.

14. A communication resource allocation method in which a first base station allocates a communication resource to a terminal, comprising:

obtaining a first path loss difference value, the first path loss difference value being a difference between the first and second path loss values which are respectively given between the first base station and the terminal and between the second base station and the terminal;

obtaining a second path loss difference-value, the second path loss difference value being a difference between the first path loss value and a third path loss value between a third base station and the terminal;

obtaining a third path loss difference value, the third path loss difference value being a difference between the second and third path loss values;

allocating a first resource to a whispering area in which the first path loss difference value is greater than a first threshold value and the second path loss difference value is greater than a second threshold value, the first resource being a part of the communication resource;

allocating a first speaking resource to a first speaking area in which the first path loss difference value is less than the first threshold value and the third path loss difference value is greater than the third threshold value, the first speaking resource being a whispering resource of the second base station; and

allocating a second speaking resource to a second speaking area in which the second path loss difference value is less than the second threshold value and the third path loss difference value is less than the third threshold value, the second speaking resource being a whispering resource of the third base station.

15. The communication resource allocation method of claim 14, further comprising increasing the third threshold value when the request resource amount of the first speaking area is greater than the first speaking resource amount.

16. The communication resource allocation method of claim 15, further comprising controlling the terminal so that the terminal leaving the speaking area has a decreased transmit power as the third threshold value increases.

17. The communication resource allocation method of claim 15, further comprising providing increase information of the third threshold value to the third base station so that the third base station may utilize the increase information of the third threshold value to adaptive modulation and coding.

18. A communication resource allocation method in which a first base station allocates a communication resource, comprising:

allocating a whispering resource to a whispering area, the whispering resource being a part of the communication resource and the whispering area being a peripheral area of the first base station;

allocating a speaking resource corresponding to a whispering resource of a second base station to a speaking area, the speaking area being included in the first base station and being a border area between the first and second base stations;

decreasing a ratio of a second speaking resource corresponding to the whispering resource of the third base station when the resource request of the speaking area is increased; and

increasing the ratio of the first speaking resource by the decrease of the ratio of the second speaking resource.

19. The communication resource allocation method of claim 18, further comprising requesting of the second base station that the increase of the ratio of the first speaking resource is reflected on the whispering resource of the second base station.

20. A communication resource allocation method in which a first base station allocates a communication resource, comprising:

the first base station receiving path loss information between at least one base station and a terminal,

determining an adjacent base station through the path loss information;

obtaining a path loss difference value, the path loss difference value being a difference between the first and second path loss values which are respectively given between the first base station and the terminal and between the second base station and the terminal;

allocating a first resource to a speaking area in which the path loss difference value is less than a threshold value, the first resource corresponding to the whispering resource of the adjacent base station among the communication resource;

configuring a second resource by gathering parts of communication resources corresponding to the whispering resource of a plurality of adjacent base stations when there is no resource excluding the whispering resource of the adjacent base station among the communication resource; and

allocating the second resource to the whispering area in which the path loss difference value is greater than a threshold value.