METHOD OF CONSTRUCTING RESOURCE ALLOCATION MAP FOR MOBILE COMMUNICATION SYSTEM

• US 20100246498A1
• Filed: 05/25/2007
• Published: 09/30/2010
• Est. Priority Date: 05/25/2006
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute, Samsung Electronics Co. Ltd.
• Original Assignee: Electronics and Telecommunications Research Institute, Samsung Electronics Co. Ltd.
• Inventors: Yoon, Chul-Sik, Lim, Kwang-Jae
• Granted Patent: US 8,331,398 B2
• Time in Patent Office: Days
• US Class Current: 370/329
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0039 Frequency-contiguous, i.e. with no allocation of frequencies for one user or terminal between the frequencies allocated to another
• CPC Class Codes: H04L 5/0041 Frequency-non-contiguous

Abstract

The present invention relates to a method of constructing a resource allocation map in a mobile communication system. In a method of constructing a map in a hierarchial pattern method in a case where a localized resource block (localized RB) and a distributed resource block (distributed RB) need to be simultaneously allocated in regards to a radio resource allocated in a previous frame or reserved with a fixed allocation, a radio resource that is reserved or not used and a radio resource that is newly allocated in a map of a current frame are classified and represented. Then, in regards to a radio resource that is allocated in a current frame, a localized RB and a distributed RB are classified and represented. As for the localized RB, allocation information is represented in an index pattern method, and as for the distributed RB, resource allocation information is represented in a toggle pattern method.

Claims

1. A method of constructing a resource allocation map in a case where a base station allocates a radio resource to a plurality of mobile terminals by using a localized resource block in a mobile communication system, the localized resource block being a localized sub-channel composed of neighboring sub-carriers, the method comprising:

including a mobile terminal identifier column where identifiers of the mobile terminals are continuously displayed, in the resource allocation map;

setting an index for each mobile terminal according to an order in which the mobile terminal identifiers are displayed, and allocating an index of a mobile terminal corresponding to each of resource blocks of the radio resource for each resource block, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted; and

including an index bit pattern where indexes allocated for the individual resource blocks are arranged according to an order of the resource blocks included in the radio resource, in the resource allocation map.

2. The method of claim 1, further comprising, between the setting of an index for each mobile terminal and the allocating of an index of a mobile terminal for each resource block, and including of the index bit pattern in the resource allocation map,

allocating an index corresponding to a resource block of the radio resource that is not allocated to the mobile terminal.

3. The method of claim 1, further comprising, between the including of the mobile terminal identifier column in the resource allocation map, and the setting of an index for each mobile terminal and the allocating of an index of a mobile terminal for each resource block,

determining the number of bits that form the index, wherein the number of bits that form the index is calculated by Equation ┌

log₂(M)┐

, where reference character M indicates the number of mobile terminals.

4. The method of claim 2, further comprising, between the including of the mobile terminal identifier column in the resource allocation map, and the setting of an index for each mobile terminal and the allocating of an index of a mobile terminal for each resource block,

determining the number of bits that form the index,

wherein the number of bits that form the index is calculated by Equation ┌

log₂ (M+1)┐

, where reference character M indicates the number of mobile terminals.

5. A method of constructing a resource allocation map in a case where a base station allocates a radio resource to a plurality of mobile terminals by using a distributed resource block in a mobile communication system, the distributed resource block being a distributed sub-channel composed of distributed sub-carriers, the method comprising:

including a mobile terminal identifier column where identifiers of the mobile terminals are continuously displayed according to an order in which the radio resource is allocated to the mobile terminals, in the resource allocation map;

setting a toggle bit to each mobile terminal according to an order in which the mobile terminal identifiers are displayed, and allocating a toggle bit of a mobile terminal corresponding to a resource block of the radio resource for each resource block, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted; and

including a toggle bit pattern where the toggle bits allocated for the individual resource blocks are arranged according to the order of the resource blocks included in the radio resource, in the resource allocation map.

6. The method of claim 5, wherein, in the setting of the toggle bit to each mobile terminal and the allocating of the toggle bit of a mobile terminal for each resource block, different toggle bits are allocated to neighboring mobile terminals in the order in which the radio resource is allocated.

7. The method of claim 6, further comprising, between the setting of the toggle bit to each mobile terminal and the allocating of the toggle bit of a mobile terminal for each resource block, and the including of the toggle bit pattern in the resource allocation map,

allocating a toggle bit that corresponds to a resource block of the radio resource that is not allocated to the mobile terminals,

wherein a toggle bit allocated to a resource block that is not allocated in the allocating of the toggle bit and a toggle bit of a resource block that is adjacent to the resource block not allocated and is allocated with the mobile terminal are different from each other.

8. The method of claim 5, wherein, in the including of the toggle bit pattern in the resource allocation map, the number of bits of the toggle bit pattern is the same as the total number of resource blocks that form the radio resource.

9. A method of constructing a resource allocation map in a case where a base station in a mobile communication system allocates a radio resource to a plurality of mobile terminals, the radio resource including resource blocks having an allocation period of one frame or more in a map of a previous frame or being reserved with a fixed allocation, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted, the method comprising:

constructing a bit column including classification information corresponding to a resource block allocated in a current frame among the entire radio resource and including the bit column in the resource allocation map; and

including a localized resource block bit pattern including classification information of a localized resource block and a distributed resource block included in the resource block included in the resource block allocated in the current frame, in the resource allocation map.

10. The method of claim 9, further comprising, after the including of the localized resource block bit pattern in the resource allocation map:

setting an index for each of mobile terminals that are allocated with the localized resource block; and

including an index bit pattern in which indexes of corresponding mobile terminals for the individual resource blocks are arranged according to the order in which the localized resource blocks are located in the radio resource, in the resource allocation map.

11. The method of claim 10, further comprising, after the including of the index bit pattern in the resource allocation map:

allocating toggle bits to mobile terminals according to the order of the mobile terminals that are allocated with the distributed resource block; and

including an index bit pattern in which the toggle bits of the mobile terminals corresponding to the individual distributed resource blocks are arranged according to the order in which the distributed resource blocks are located in the radio resource, in the resource allocation map.

12. The method of claim 9, further comprising, after the including of the localized resource block bit pattern in the resource allocation map:

allocating toggle bits to the mobile terminals according to the order of the mobile terminals that are allocated with the distributed resource block; and

including a toggle bit pattern in which the toggle bits of the mobile terminals corresponding to the individual distributed resource blocks are arranged in the order in which the distributed resource blocks are located in the radio resource, in the resource allocation map.

13. The method of claim 9, further comprising, after the including of the toggle bit pattern in the resource allocation map:

setting an index to each of mobile terminals that are allocated with the localized resource blocks; and

including an index bit pattern in which the indexes of the mobile terminals corresponding to the individual resource blocks are arranged according to the order in which the localized resource blocks are located in the radio resource, in the resource allocation map.

14. The method of claim 9, wherein, in the constructing of the bit column and the including of the bit column in the resource allocation map, the resource block that is allocated in the current frame is composed of a resource block except for the reserved resource block in the radio resource and the resource block not allocated to the mobile terminals.

15. The method of claim 9, wherein, in the constructing of the bit column and the including of the bit column in the resource allocation map, the length of the bit column is the same as the total number of resource blocks included in the radio resource, and the bit column is constructed by allocating different bits to the resource block allocated in the current frame and the other resource blocks except for the resource block allocated in the current frame.

16. The method of claim 9, wherein, in the constructing of the bit column and the including of the bit column in the resource allocation map, the length of the localized resource bit pattern is the same as the total number of resource blocks allocated in the current frame, and the localized resource bit pattern is constructed by allocating different bits to the localized resource block and the distributed resource block.

17. The method of claim 10, wherein the length of the index bit pattern corresponds to the number of bits that form one index and the number of localized resource blocks, and

the number of bits that form one index is determined according to the number of mobile terminals that are allocated with the localized resource blocks.

18. The method of claim 11, wherein the number of bits of the toggle bit pattern is the same as the number of distributed resource blocks.

19. A method of constructing a resource allocation map in a case where a base station in a mobile communication system allocates a radio resource by using sub-maps and a main map, the sub-maps including radio resource allocation information for mobile terminals, the main map including information for a location of the radio resource used for transmission of the sub-maps and a modulation and coding scheme, the method comprising:

constructing a bit column including classification information corresponding to a resource block allocated in a current frame in the entire radio resource, the resource block being a unit of a minimal radio resource found by dividing a radio resource used when data is transmitted, and including the bit column in the man map;

including a localized resource block bit pattern including classification information of a localized resource block corresponding to the resource block allocated in the current frame and a distributed resource block, in the main map; and

including sub-map usage information corresponding to whether the sub-maps are used, in the main map, and classifying a sub-map localized resource block and a sub-map distributed resource block for each sub-map when the sub-maps are used.

20. The method of claim 19, further comprising, after the including of the sub-map usage information in the main map and the classifying of the sub-map localized resource block and the sub-map distributed resource block for each sub-map:

setting an index for each of mobile terminals that are allocated with the sub-map localized resource block; and

including an index bit pattern in which indexes of corresponding mobile terminals for the individual sub-map localized resource blocks are arranged according to the order in which the sub-map localized resource blocks are located in the radio resource, in the sub-maps.

21. The method of claim 20, further comprising, between the including of the sub-map usage information in the main map and the classifying of the sub-map localized resource block and the sub-map distributed resource block for each sub-map, and the setting of the index for each of mobile terminals:

including a sub-map localized resource block bit pattern including information for a location of the sub-map localized resource block in the localized resource block, in the sub-maps.

22. The method of claim 20, further comprising, after the including of the index bit pattern in the sub-maps:

allocating toggle bits to mobile terminals according to the order of the mobile terminals allocated with the sub-map distributed resource block; and

including a toggle bit pattern in which the toggle bits of the mobile terminals corresponding to the individual sub-map distributed resource blocks are arranged according to the order in which the sub-map distributed resource blocks are located in the radio resource, in the sub-maps.

23. The method of claim 22, further comprising, between the including of the index bit pattern in the sub-maps and the allocating of the toggle bits to the mobile terminals and the allocating of the toggle bits to the mobile terminals:

including information for a starting location and a length of the sub-map distributed resource block in the distributed resource block in the sub-maps.

24. The method of claim 19, further comprising, after the including of the sub-map usage information in the main map and the classifying of the sub-map localized resource block and the sub-map distributed resource block for each sub-map:

allocating toggle bits to mobile terminals according to an order of the mobile terminals allocated with the sub-map distributed resource blocks; and

including a sub-map toggle bit pattern including a toggle bit column in which the toggle bits of the mobile terminals corresponding to the individual sub-map distributed resource blocks are arranged according to the order in which the sub-map distributed resource blocks are located in the radio resource, in the sub-maps.

25. The method of claim 24, further comprising, between the including of the sub-map usage information in the main map and the classifying of the sub-map localized resource block and the sub-map distributed resource block for each sub-map and allocating of the toggle bits to the mobile terminals,

including information for a start location and a length of the sub-map distributed resource block in the distributed resource block in the sub-maps.

26. The method of claim 24, further comprising, after the including of the sub-map toggle bit pattern in the sub-maps:

setting an index for each of mobile terminals that are allocated with the sub-map localized resource blocks; and

including an index bit pattern in which indexes of corresponding mobile terminals for the sub-map localized resource blocks are arranged according to the order in which the sub-map localized resource blocks are located in the radio resource, in the sub-maps.

27. The method of claim 26, further comprising, between the including of the sub-map toggle bit pattern in the sub-maps and the setting of the indexes to the mobile terminals,

including a sub-map localized resource block bit pattern including information for a location of the sub-map localized resource block in the localized resource block, in the sub-maps.

28. The method of claim 21, wherein the sub-map localized resource block bit pattern is constructed by allocating different bits to the sub-map localized resource block in the localized resource block and the other localized resource blocks except for the sub-map localized resource block, and

the length of the sub-map localized resource block bit pattern is the same as the total number of localized resource blocks.

29. The method of claim 20, wherein the length of the index is determined according to the number of mobile terminals that are allocated with the localized resource blocks.

30. The method of claim 22, wherein the length of the sub-map toggle bit pattern is the same as the total number of distributed resource blocks in the radio resource.

31. The method of claim 23, wherein the length of the sub-map toggle bit pattern is the same as the number of sub-map distributed resource blocks.