Method for allocating resource, and method for transmitting resource allocation information

1. A method for allocating resources to a plurality of user equipments (UEs) in a communication system, the method comprising:

defining at least one of the plurality of UEs as a first-type UE;

defining at least one other of the plurality of UEs as a second-type UE;

allocating resources to the first-type UE in units of group resource blocks;

allocating resources to the second-type UE in specific units other than the group resource blocks;

transmitting first-type resource allocation information to the first-type UE; and

transmitting second-type resource allocation information to the second-type UE,

wherein the group resource blocks are preset as units, each being a group of a specific number of basic resource blocks, the basic resource blocks preset as smallest units of resource allocation,

wherein reserved information (Nu) having a length equal to a difference between a length of the first-type resource allocation information and a length of the second-type resource allocation information is inserted into a shorter one of the first-type resource allocation information and the second-type resource allocation information.

2. The method according to claim 1 , wherein allocating resources to the second-type UE comprises allocating units of the basic resource blocks.

3. The method according to claim 1 , wherein the first-type resource allocation information transmitted to the first-type UE comprises at least different type indicators than the second-type resource allocation information transmitted to the second-type UE.

4. A method for transmitting resource allocation information to a plurality of user equipments (UEs) in a communication system, the method comprising:

defining at least one of the plurality of UEs as a first-type UE;

defining at least one other of the plurality of UEs as a second-type UE;

transmitting first-type resource allocation information to the first-type UE, the first-type UE resource allocation information used to allocate resources in units of group resource blocks; and

transmitting second-type resource allocation information to the second-type UE, the second-type UE resource allocation information used to allocate resources in specific units other than the group resource blocks,

wherein the group resource blocks are preset as units, each being a group of a specific number of basic resource blocks, the basic resource blocks preset as smallest units of resource allocation,

wherein each of the first-type resource allocation information and the second-type resource allocation information includes type information (I) indicating a resource allocation information type, and

wherein reserved information (Nu) having a length equal to a difference between a length of the first-type resource allocation information and a length of the second-type resource allocation information is inserted into a shorter one of the first-type resource allocation information and the second-type resource allocation information.

5. The method according to claim 4 , further comprising using the second-type resource allocation information to allocate resources in units of the basic resource blocks to the second-type UE.

6. The method according to claim 5 , wherein the first-type resource allocation information further includes group resource block allocation information (K) indicating a group resource block allocated to each first-type UE.

7. The method according to claim 5 , wherein the second-type resource allocation information includes:

group resource block index information (O) indicating an index of a group resource block including a basic resource block allocated to each second-type UE; and

basic resource block allocation information (R) indicating a basic resource block allocated to each second-type UE in the group resource block having the index.

8. The method according to claim 7 , wherein the group resource block index information (O) includes at least two group resource block index information (O) and the basic resource block allocation information (R) includes at least two basic resource block allocation information (R).

9. The method according to claim 4 , wherein:

the communication system allocates resources of consecutive time-frequency regions to each of the plurality of UE;

the first-type resource allocation information further includes group resource block allocation information (K) indicating a group resource block allocated to each first-type UE;

the second-type resource allocation information includes group resource block index information (O) indicating an index of a group resource block including a basic resource block allocated to each second-type UE and basic resource block allocation information (R) indicating a basic resource block allocated to each second-type UE in the group resource block having the index; and

at least one of the group resource block allocation information (K) and the basic resource block allocation information (R) includes start index information of group resource blocks or basic resource blocks allocated to each of the plurality of UE and block count information of the group resource blocks or basic resource blocks allocated to each of the plurality of UE.

10. The method according to claim 9 , wherein at least one, including the start index information and the block count information, of the group resource block allocation information (K) and the basic resource block allocation information (R) has a length required to express i(i+1)/2 combinations when “i” is the total number of indices of the group resource blocks or the basic resource blocks.