Method and system for variable-sized resource block allocation within OFDMA communication systems
View Patent ↗A system for variable-sized resource block allocation in a communication system is disclosed. A processor module is configured to construct one or more resource blocks, having one or more sizes, and to define a candidate resource block set, including one or more of the constructed resource blocks, and a coherence bandwidth set, including one or more coherence bandwidths. A coherence bandwidth estimate is derived for a resource block subframe, and the one or more resource blocks in the resource block set are ranked, based on a comparison between the coherence bandwidth estimate and each of the one or more coherence bandwidths in the coherence bandwidth set. The highest ranked resource block is allocated for a data transmission to a user; and data is scheduled in accordance with a size of the allocated resource block. The allocated resource block size is indicated to one or more mobile stations in the communication system.
1. A method for variable-sized resource block allocation in a communication system, comprising:
constructing one or more resource blocks, having one or more sizes;
defining a candidate resource block set, including one or more of the constructed resource blocks, and defining a coherence bandwidth set, including one or more coherence bandwidths;
deriving a coherence bandwidth estimate for a resource block subframe;
ranking the one or more resource blocks in the resource block set, based on a comparison between the coherence bandwidth estimate and each of the one or more coherence bandwidths in the coherence bandwidth set;
allocating a highest ranked resource block for a data transmission to a user; and
scheduling, by a processor, data in accordance with a size of the allocated resource block.
2. The method of claim 1 , further comprising:
indicating the allocated resource block size to one or more mobile stations in the communication system.
3. The method of claim 1 , wherein the highest ranked resource block is allocated for a predefined resource block allocation period.
4. The method of claim 1 , wherein the constructing comprises assigning a specific number of Orthogonal Frequency Division Multiple Access subcarriers to a specific number of Orthogonal Frequency Division Multiple Access symbols.
5. The method of claim 1 , wherein the one or more sizes of the one or more resource blocks are obtained from a lookup table, depending on channel conditions associated with radio operating environments.
6. The method of claim 1 , wherein the coherence bandwidth estimate is obtained using estimates of a channel transfer function.
7. The method of claim 1 , wherein the coherence bandwidth estimate is obtained using a lookup table, depending on channel conditions associated with radio operating environments.
8. The method of claim 1 , wherein a plurality of resource blocks allocated for data transmission to a particular user are contiguous within an area of a subframe's time-frequency plane.
9. The method of claim 1 , wherein a plurality of resource blocks allocated for data transmission to a particular user are distributed non-contiguously in subcarrier frequency within a subframe's time-frequency plane.
10. The method of claim 9 , wherein the resource block distribution is deterministic.
11. The method of claim 9 , wherein the resource block distribution is pseudo-random.
12. A system for variable-sized resource block allocation in a communication system, comprising:
a processor module configured to construct one or more resource blocks, having one or more sizes, and to define a candidate resource block set, including one or more of the constructed resource blocks, and to define a coherence bandwidth set, including one or more coherence bandwidths;
a coherence bandwidth module configured to derive a coherence bandwidth estimate for a resource block subframe;
a comparing module configured to rank the one or more resource blocks in the resource block set, based on a comparison between the coherence bandwidth estimate and each of the one or more coherence bandwidths in the coherence bandwidth set;
an allocating module configured to allocate a highest ranked resource block for a data transmission to a user; and
a scheduler configured to schedule data in accordance with a size of the allocated resource block.
13. The system of claim 12 , further comprising:
a transceiver configured to indicate the allocated resource block size to one or more mobile stations in the communication system.
14. The system of claim 12 , wherein the highest ranked resource block is allocated for a predefined resource block allocation period.
15. The system of claim 12 , wherein the processor module is further configured to assign a specific number of Orthogonal Frequency Division Multiple Access subcarriers to a specific number of Orthogonal Frequency Division Multiple Access symbols.
16. The system of claim 12 , wherein the one or more sizes of the one or more resource blocks are obtained from a lookup table, depending on channel conditions associated with radio operating environments.
17. The system of claim 12 , wherein the coherence bandwidth estimate is obtained using estimates of a channel transfer function.
18. The system of claim 12 , wherein the coherence bandwidth estimate is obtained using a lookup table, depending on channel conditions associated with radio operating environments.
19. The system of claim 12 , wherein a plurality of resource blocks allocated for data transmission to a particular user are contiguous within an area of a subframe's time-frequency plane.
20. The system of claim 12 , wherein a plurality of resource blocks allocated for data transmission to a particular user are distributed non-contiguously in subcarrier frequency within a subframe's time-frequency plane.
21. The system of claim 20 , wherein the resource block distribution is deterministic.
22. The system of claim 20 , wherein the resource block distribution is pseudo-random.
23. A station configured for variable-sized resource block allocation in a communication system, comprising:
means for constructing one or more resource blocks, having one or more sizes;
means for defining a candidate resource block set, including one or more of the constructed resource blocks, and defining a coherence bandwidth set, including one or more coherence bandwidths;
means for deriving a coherence bandwidth estimate for a resource block subframe;
means for ranking the one or more resource blocks in the resource block set, based on a comparison between the coherence bandwidth estimate and each of the one or more coherence bandwidths in the coherence bandwidth set;
means for allocating a highest ranked resource block for a data transmission to a user; and
means for scheduling data in accordance with a size of the allocated resource block.
24. The station of claim 23 , further comprising:
means for indicating the allocated resource block size to one or more mobile stations in the communication system.
25. The station of claim 23 , wherein the highest ranked resource block is allocated for a predefined resource block allocation period.
26. The station of claim 23 , wherein the means for constructing comprises means for assigning a specific number of Orthogonal Frequency Division Multiple Access subcarriers to a specific number of Orthogonal Frequency Division Multiple Access symbols.
27. The station of claim 23 , wherein the one or more sizes of the one or more resource blocks are obtained from a lookup table, depending on channel conditions associated with radio operating environments.
28. The station of claim 23 , wherein the coherence bandwidth estimate is obtained using estimates of a channel transfer function.
29. The station of claim 23 , wherein the coherence bandwidth estimate is obtained using a lookup table, depending on channel conditions associated with radio operating environments.
30. The station of claim 23 , wherein a plurality of resource blocks allocated for data transmission to a particular user are contiguous within an area of a subframe's time-frequency plane.
31. The station of claim 23 , wherein a plurality of resource blocks allocated for data transmission to a particular user are distributed non-contiguously in subcarrier frequency within a subframe's time-frequency plane.
32. The station of claim 31 , wherein the resource block distribution is deterministic.
33. The station of claim 31 , wherein the resource block distribution is pseudo-random.
34. The station of claim 23 , wherein the station is a base station.
35. A non-transitory computer-readable medium storing instructions thereon for, when executed by a processor, performing a method for variable-sized resource block allocation in a communication system, the method comprising:
constructing one or more resource blocks, having one or more sizes;
defining a candidate resource block set, including one or more of the constructed resource blocks, and defining a coherence bandwidth set, including one or more coherence bandwidths;
deriving a coherence bandwidth estimate for a resource block subframe;
ranking the one or more resource blocks in the resource block set, based on a comparison between the coherence bandwidth estimate and each of the one or more coherence bandwidths in the coherence bandwidth set;
allocating a highest ranked resource block for a data transmission to a user; and
scheduling data in accordance with a size of the allocated resource block.
36. The computer-readable medium of claim 35 , further comprising:
indicating the allocated resource block size to one or more mobile stations in the communication system.
37. The computer-readable medium of claim 35 , wherein the highest ranked resource block is allocated for a predefined resource block allocation period.
38. The computer-readable medium of claim 35 , wherein the constructing comprises assigning a specific number of Orthogonal Frequency Division Multiple Access subcarriers to a specific number of Orthogonal Frequency Division Multiple Access symbols.
39. The computer-readable medium of claim 35 , wherein the one or more sizes of the one or more resource blocks are obtained from a lookup table, depending on channel conditions associated with radio operating environments.
40. The computer-readable medium of claim 35 , wherein the coherence bandwidth estimate is obtained using estimates of a channel transfer function.
41. The computer-readable medium of claim 35 , wherein the coherence bandwidth estimate is obtained using a lookup table, depending on channel conditions associated with radio operating environments.
42. The computer-readable medium of claim 35 , wherein a plurality of resource blocks allocated for data transmission to a particular user are contiguous within an area of a subframe's time-frequency plane.
43. The computer-readable medium of claim 35 , wherein a plurality of resource blocks allocated for data transmission to a particular user are distributed non-contiguously in subcarrier frequency within a subframe's time-frequency plane.
44. The computer-readable medium of claim 43 , wherein the resource block distribution is deterministic.
45. The computer-readable medium of claim 43 , wherein the resource block distribution is pseudo-random.