Resource allocation method and apparatus

• US 9,179,441 B2
• Filed: 01/23/2013
• Issued: 11/03/2015
• Est. Priority Date: 07/23/2010
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Xue, Lixia, Berggren, Fredrik
• Primary Examiner(s): Vu, Huy D
• Assistant Examiner(s): Shao, Hong
• Application Number:
  US13/748,019
• Publication Number:
  US 20130128852A1
• Time in Patent Office: 1,014 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: H04L 27/0008 arrangements for allowing a transmitter or receiver to use more than one type of modulation negotiating modulation type for two-way transmission paths H04L5/1453
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 28/06 Optimizing the usage of the radio link, e.g. header compression, information sizing , discarding information system modifying transmission characteristic according to link quality by modifying frame length H04L1/0007; dynamic adaptation of the packet size for flow control or congestion control H04L47/365
• CPC Class Codes: H04W 72/04 Wireless resource allocation
• CPC Class Codes: H04W 72/52 based on load

Abstract

The present invention discloses a resource allocation method and apparatus, wherein the method comprises: determining a first resource block group size corresponding to a first resource allocation type in the common resource area; and dividing all resource blocks in the common resource area of the carrier into one or more resource block groups; determining a second resource block group size corresponding to the first resource allocation type in the dedicated resource area; and according to the second resource block group size, dividing resource blocks in the dedicated resource area of the carrier into one or more resource block groups.

Claims

1. A resource allocation method, comprising:

according to a quantity of resource blocks in a common resource area of a carrier and a set first corresponding relationship, determining a first resource block group size corresponding to a first resource allocation type in the common resource area, wherein the first corresponding relationship is a corresponding relationship between the quantity of the resource blocks and a resource block group size, wherein the carrier comprises the common resource area and a dedicated resource area, wherein the common resource area is a resource area that can be used by both a terminal of a communication system of a first type and a terminal of a communication system of a second type within the carrier, and the dedicated resource area is a resource area that can be used only by the terminal of the communication system of the second type within the carrier, and wherein the communication system of the second type is an evolved system of the communication system of the first type, and wherein resource group sizes for terminals of the communication systems of the first and second types in the common resource area are both equal to the first resource block group size;

according to the first resource block group size, dividing all the resource blocks in the common resource area of the carrier into one or more first resource block groups;

determining a first quantity of bits in a resource allocation field for the common resource area according to a quantity of resource blocks in the common resource area of the carrier and the first resource block group size, wherein the first quantity of bits indicates a quantity of resource block groups in the common resource area;

determining a second quantity of bits in a resource allocation field for the dedicated resource area according to the first quantity of bits and a total quantity of bits in the resource allocation field corresponding to the first resource allocation type, wherein the second quantity of bits indicates a quantity of resource block groups in the dedicated resource area;

determining a second resource block group size corresponding to the first resource allocation type in the dedicated resource area, according to a quantity of resource blocks in the dedicated resource area and the second quantity of bits, wherein a resource group size for terminals of the communication systems of the second type in the dedicated resource area is equal to the second resource block group size;

according to the second resource block group size, dividing resource blocks in the dedicated resource area of the carrier into one or more second resource block groups, wherein each one of the one or more second resource block groups divided from the dedicated resource area corresponds to an indication for indicating whether a second resource block group is to be scheduled to a user equipment, and

sending the indication to the user equipment.

2. The method of claim 1, wherein the total quantity of bits in the resource allocation field corresponding to the first resource allocation type is determined one selected from the group consisting of:

(a) a quantity of resource blocks corresponding to the maximum system bandwidth supported by the communication system of the first type and the first corresponding relationship; and

(b) a total quantity of resource blocks contained in the carrier and the first corresponding relationship.

3. The method of claim 1, wherein according to the quantity of resource blocks in the dedicated resource area and the second quantity of the bits, determining the second resource block group size comprises one selected from the group consisting of:

(a) if the quantity of resource blocks of a last resource block group in the common resource area is equal to the first resource block group size, obtaining a first ratio by rounding up a quotient obtained by dividing the quantity of the resource blocks in the dedicated resource area by the second quantity of the bits;

if the first ratio is a positive integral multiple of the first resource block group size, determining the first ratio as the second resource block group size, and, if the first ratio is not the positive integral multiple of the first resource block group size, determining a minimum integer larger than the first ratio and equal to the positive integral multiple of the first resource block group size as the second resource block group size;

(b) if the quantity of the resource blocks of the last resource block group in the common resource area is less than the first resource block group size, adding the quantity of the resource blocks in the dedicated resource area and the quantity of the resource blocks of the last resource block group in the common resource area, thereby obtaining a first total quantity, and obtaining the first ratio by rounding up the quotient obtained by dividing the first total quantity by the second quantity of the bits; and

if the first ratio is the positive integral multiple of the first resource block group size, determining the first ratio as the second resource block group size, and, if the first ratio is not a positive integral multiple of the first resource block group size, determining the minimum integer larger than the first ratio and equal to the positive integral multiple of the first resource block group size as the second resource block group size;

and

(c) if the quantity of the resource blocks of the last resource block group in the common resource area is less than the first resource block group size, obtaining the first ratio by rounding up the quotient obtained by dividing the quantity of the resource blocks in the dedicated resource area by the second quantity of the bits;

if the first ratio is the positive integral multiple of the first resource block group size, determining the first ratio as the second resource block group size, and, if the first ratio is not the positive integral multiple of the first resource block group size, determining the minimum integer larger than the first ratio and equal to the positive integral multiple of the first resource block group size as the second resource block group size.

4. The method of claim 3, further comprising:

if the second resource block group size is larger than a set value, replacing the second resource block group size with the set value.

5. The method of claim 1, wherein after determining the second resource block group size corresponding to the first resource allocation type in the dedicated resource area according to the total quantity of the resource blocks of the carrier and the first corresponding relationship, the method further comprises:

according to the quantity of resource blocks in the dedicated resource area and the second resource block group size, determining the quantity of the resource block groups in the dedicated resource area, and according to the quantity of the resource block groups in the dedicated resource area, determining the second quantity of the bits in the resource allocation field for the dedicated resource area.

6. The method of claim 1, wherein according to the second resource block group size, dividing the resource blocks in the dedicated resource area of the carrier into one or more resource block groups comprises:

if the quantity of the resource blocks of the last resource block group in the common resource area is less than the first resource block group size, calculating a difference between the second resource block group size and the quantity of the resource blocks of the last resource block group in the common resource area as a first difference;

grouping the resource blocks of the last resource block group in the common resource area and resource blocks of a quantity equal to the first difference in the dedicated resource area that are adjacent to the common resource area in serial number into the first resource block group of the resource blocks in the dedicated resource area, or, grouping the resource blocks of the quantity equal to the first difference in the dedicated resource area that are adjacent to the common resource area in the serial number into the first resource block group of the resource blocks in the dedicated resource area; and

dividing the resource blocks remaining in the dedicated resource area after removing the first resource block group into one or more resource block groups according to the second resource block group size.

7. A resource allocation method, comprising:

determining a quantity of resource block group subsets corresponding to a second resource allocation type in a carrier, according to one selected from the group consisting of (a) a quantity of resource blocks in a common resource area of the carrier and a set second corresponding relationship, and (b) a first resource block group size of a first resource allocation type in the common resource area, and allocating resource block groups of the carrier into the resource block group subsets, wherein the carrier includes the common resource area and a dedicated resource area, and the second corresponding relationship is a corresponding relationship between the quantity of the resource blocks and the quantity of the resource block group subsets, wherein the common resource area is a resource area that can be used by both a terminal of a communication system of a first type and a terminal of a communication system of a second type within the carrier, and the dedicated resource area is a resource area that can be used only by the terminal of the communication system of the second type within the carrier, and wherein the communication system of the second type is an evolved system of the communication system of the first type;

determining a total quantity of the bits in a resource allocation field corresponding to the second resource allocation type according to one selected from the group consisting of (a) a total quantity of resource blocks contained in the carrier and the second corresponding relationship and (b) a total quantity of bits in a resource allocation field corresponding to the first resource allocation type; and

according to the total quantity of the bits in the resource allocation field corresponding to the second resource allocation type, a quantity of bits required for indicating the resource block group subsets, and a quantity of bits required for indicating a resource allocation direction, determining a quantity of bits indicating resource allocation of the resource block group subsets of the second resource allocation type, according to the quantity of the bits indicating the resource allocation of the resource block group subsets, determining an indication that indicates whether a resource block in each resource block group subset is to be scheduled to a user equipment; and

sending the indication to the user equipment,

wherein for the common resource area, each bit indicates allocation of one resource block in a resource block group, while for the dedicated resource area, each bit indicates allocation of a plurality of resource blocks in a resource block group.

8. The method of claim 7, wherein according to the first resource block group size of the first resource allocation type in the common resource area, determining the quantity of the resource block group subsets corresponding to the second resource allocation type in the carrier comprises:

setting the quantity of the resource block group subsets corresponding to the second resource allocation type in the carrier to be equal to the first resource block group size corresponding to the first resource allocation type in the common resource area.

9. The method of claim 7, further comprising:

determining the resource block group size of the second resource allocation type corresponding to the carrier in the dedicated resource area and the resource block group size of the second resource allocation type corresponding to the carrier in the common resource area.

10. The method of claim 7, wherein determining the total quantity of the bits in the resource allocation field corresponding to the second resource allocation type according to the total quantity of bits in the resource allocation field corresponding to the first resource allocation type comprises setting the total quantity of the bits in the resource allocation field corresponding to the second resource allocation type to be equal to the total quantity of the bits in the resource allocation field corresponding to the first resource allocation type.

11. The method of claim 7, wherein according to the total quantity of the bits in the resource allocation field corresponding to the second resource allocation type, the quantity of the bits required for indicating the resource block group subsets, and the quantity of the bits required for indicating the resource allocation direction, determining the quantity of the bits indicating the resource allocation of the resource block group subsets of the second resource allocation type comprises:

determining the quantity of the bits indicating the resource allocation of the resource block group subsets of the second resource allocation type, which is equal to a difference obtained by subtracting the quantity of the bits required for indicating the resource block subsets and the quantity of the bits required for indicating the resource allocation direction from the total quantity of the bits in the resource allocation field corresponding to the second resource allocation type.

12. The method of claim 9, wherein according to the quantity of the bits indicating the resource allocation of the resource block group subsets, determining the indication that indicates whether the resource block in each resource block group subset is scheduled to the user equipment comprises:

according to the quantity of the bits indicating the resource allocation of the resource block group subsets, determining the indication for indicating whether the resource block in each resource block group in the common resource area is to be scheduled to the user equipment, and determining an indication for indicating whether or not resource blocks in the dedicated resource area are to be scheduled to the user equipment,

wherein one bit in the indication for indicating whether the resource blocks in the dedicated resource area are to be scheduled to the user equipment indicates whether N resource blocks in the dedicated resource area are to be scheduled to the user equipment, wherein N is equal to a value obtained by rounding up a ratio of the resource block group size in the dedicated resource area to the resource block group size in the common resource area.

13. A resource allocation apparatus, comprising:

a processor configured to;

determine a first resource block group size corresponding to a first resource allocation type in a common resource area according to a quantity of resource blocks in the common resource area of the carrier and a set first corresponding relationship that has been set, wherein the first corresponding relationship is a corresponding relationship between the quantity of the resource blocks and a resource block group size, wherein the carrier comprises the common resource area and a dedicated resource area, wherein the common resource area is a resource area that can be used by both a terminal of a communication system of a first type and a terminal of a communication system of a second type within the carrier, and the dedicated resource area is a resource area that can be used only by the terminal of the communication system of the second type within the carrier, and wherein the communication system of the second type is an evolved system of the communication system of the first type, and wherein resource group sizes for terminals of the communication systems of the first and second types in the common resource area are both equal to the first resource block group size,

divide all the resource blocks in the common resource area of the carrier into one or more resource block groups according to the first resource block group size;

determine a first quantity of bits in a resource allocation field for the common resource area according to a quantity of resource blocks in the common resource area of the carrier and the first resource block group size, wherein the first quantity of bits indicates a quantity of resource block groups in the common resource area;

determining a second quantity of bits in a resource allocation field for the dedicated resource area according to the first quantity of bits and a total quantity of bits in the resource allocation field corresponding to the first resource allocation type, wherein the second quantity of bits indicates a quantity of resource block groups in the dedicated resource area;

determine a second resource block group size corresponding to the first resource allocation type in the dedicated resource area, according to a quantity of resource blocks in the dedicated resource area and the second resource block group size, wherein a resource group size for terminals of the communication systems of the second type in the dedicated resource area is equal to the second resource block group size, and

divide resource blocks in the dedicated resource area of the carrier into one or more resource block groups according to the second resource block group size, wherein each resource block group divided from the resource blocks in the dedicated resource area corresponds to an indication for indicating whether the resource block group is to be scheduled to a user equipment, and

a transmitter configured to transmit the indication to the user equipment.

14. The resource allocation apparatus of claim 13 wherein the total quantity of bits in the resource allocation field corresponding to the first resource allocation type is determined according to one selected from the group consisting of:

(a) a quantity of resource blocks corresponding to the maximum system bandwidth supported by the communication system of the first type and the first corresponding relationship; and

(b) a total quantity of resource blocks contained in the carrier and the first corresponding relationship.

15. The resource allocation apparatus of claim 13, wherein determining the second resource block group size according to the quantity of resource blocks in the dedicated resource area and the second quantity of the bits comprises one selected from the group consisting of:

(a) if the quantity of the resource blocks of the last resource block group in the common resource area is equal to the first resource block group size, obtaining a first ratio by rounding up a quotient obtained by dividing the quantity of the resource blocks in the dedicated resource area by the second quantity of the bits;

if the first ratio is a positive integral multiple of the first resource block group size, determining the first ratio as the second resource block group size; and

if the first ratio is not the positive integral multiple of the first resource block group size, determining a minimum integer larger than the first ratio and equal to a positive integral multiple of the first resource block group size as the second resource block group size;

(b) if the quantity of the resource blocks of the last resource block group in the common resource area is less than the first resource block group size, obtaining a first total quantity by adding the quantity of the resource blocks in the dedicated resource area and the quantity of the resource blocks of the last resource block group in the common resource area, and then obtaining a second ratio by rounding up a quotient obtained by dividing the first total quantity by the second quantity of the bits;

if the second ratio is the positive integral multiple of the first resource block group size, determining the second ratio as the second resource block group size, and

if the second ratio is not the positive integral multiple of the first resource block group size, determining the minimum integer larger than the second ratio and equal to the positive integral multiple of the first resource block group size as the second resource block group size; and

(c) if the quantity of the resource blocks of the last resource block group in the common resource area is less than the first resource block group size, obtaining a third ratio by rounding up a quotient obtained by dividing the quantity of the resource blocks in the dedicated resource area by the second quantity of the bits to an upward rounding operation;

if the third ratio is the positive integral multiple of the first resource block group size, determining the third ratio as the second resource block group size, and

if the third ratio is not the positive integral multiple of the first resource block group size, determining the minimum integer larger than the third ratio and equal to the a positive integral multiple of the first resource block group size as the second resource block group size.

16. The resource allocation apparatus of claim 15, wherein the processor is further configured to:

replace the second resource block group size with the set value, if the second resource block group size is larger than a set value.

17. The resource allocation apparatus of claim 13, wherein dividing the resource blocks in the dedicated resource area of the carrier into one or more resource block groups according to the second resource block group size comprises:

calculating a difference between the second resource block group size and the quantity of the resource blocks of the last resource block group in the common resource area as a first difference, if the quantity of the resource blocks of the last resource block group in the common resource area is less than the first resource block group size; and

implementing at least one selected from the group consisting of;

grouping the resource blocks of the last resource block group in the common resource area and resource blocks of a quantity equal to the first difference in the dedicated resource area that are adjacent to the common resource area in serial number into the first resource block group of resource blocks in the dedicated resource area, and

grouping the resource blocks of the quantity equal to the first difference in the dedicated resource area that are adjacent to the common resource area in serial number into the first resource block group of the resource blocks in the dedicated resource area.

18. The resource allocation apparatus of claim 13, wherein the processor is further configured to:

determine the quantity of the resource block groups in the dedicated resource area, according to the quantity of the resource blocks in the dedicated resource area and the second resource block group size, after determining the second resource block group size corresponding to the first resource allocation type in the dedicated resource area, and

determine the second quantity of bits in a resource allocation field for indicating the dedicated resource area, according to the quantity of the resource block groups in the dedicated resource area.

19. A resource allocation apparatus, comprising:

a processor configured to

determine a quantity of resource block group subsets corresponding to a second resource allocation type in a carrier, according to one selected from the group consisting of (a) a quantity of resource blocks in a common resource area of a carrier and a set second corresponding relationship, and (b) a first resource block group size of a first resource allocation type in the common resource area, and allocate resource block groups of the carrier into the resource block group subsets, wherein the carrier comprises the common resource area and a dedicated resource area, and the second corresponding relationship is corresponding relationship between the quantity of the resource blocks and the quantity of the resource block group subsets, wherein the common resource area is a resource area that can be used by both a terminal of a communication system of a first type and a terminal of a communication system of a second type within the carrier, and the dedicated resource area is a resource area that can be used only by the terminal of the communication system of the second type within the carrier, and wherein the communication system of the second type is an evolved system of the communication system of the first type;

determine a total quantity of bits in a resource allocation field corresponding to the second resource allocation type according to one selected from the group consisting of (a) a total quantity of resource blocks contained in the carrier and the second corresponding relationship and (b) a total quantity of bits in a resource allocation field corresponding to the first resource allocation type;

determine a the resource allocation field, the quantity of bits required for indicating the resource block group subsets, and the number of bits required for indicating a resource allocation direction, and

determine an indication that indicates whether a resource block in each resource block group subset is to be scheduled to a user equipment, according to the quantity of bits indicating the resource allocation of the resource block group subsets; and

a transmitter configured to transmit the indication to the user equipment,

wherein for the common resource area, each bit indicates allocation of one resource block in a resource block group, while for the dedicated resource area, each bit indicates allocation of a plurality of resource blocks in a resource block group.

20. The apparatus of claim 19, wherein determining the total quantity of the bits in the resource allocation field corresponding to the second resource allocation type according to the total quantity of bits in the resource allocation field corresponding to the first resource allocation type comprises setting the total quantity of the bits in the resource allocation field corresponding to the second resource allocation type to be equal to the total quantity of the bits in the resource allocation field corresponding to the first resource allocation type.

21. The apparatus of claim 19, wherein determining the quantity of the resource block group subsets corresponding to the second resource allocation type in the common resource area of the carrier according to the first resource block group size of the first resource allocation type comprises,

determining the quantity of the resource block group subsets corresponding to the second resource allocation type in the common resource area of the carrier, wherein the quantity of the resource block group subsets is equal to the first resource block group size corresponding to the first resource allocation type in the common resource area.

22. The apparatus of claim 19, wherein the processor is further configured to:

determine the resource block group size of the second resource allocation type corresponding to the carrier in the dedicated resource area and the resource block group size of the second resource allocation type corresponding to the carrier in the common resource area.

23. The apparatus of claim 19, wherein determining the indication that indicates whether the resource block in each resource block group subset is scheduled to the user equipment according to the quantity of the bits indicating the resource allocation of the resource block group subsets comprises:

determining an indication for indicating whether a resource block in each resource block group in the common resource area is to be scheduled to the user equipment, and determining an indication for indicating whether resource blocks in the dedicated resource area are scheduled to the user equipment, according to the quantity of the bits indicating resource allocation of the resource block group subsets;

wherein one bit in the indication for indicating whether resource blocks in the dedicated resource area are to be scheduled to the user equipment indicates whether N resource blocks in the dedicated resource area are to be scheduled to the user equipment, wherein N is equal to a value obtained by rounding up a ratio of the resource block group size in dedicated resource area to the resource block group size in the common resource area.