Methods and apparatus of obtaining scheduling information of data channel

1. A method for obtaining scheduling information of a data channel by a user equipment (UE), comprising:

determining a first set of radio resources by decoding a dynamic indicator channel, wherein the dynamic indicator channel indicates a location of the first set of radio resources;

decoding a physical control channel in the determined first set of radio resources; and

obtaining scheduling information of the data channel that carries a message from the decoded physical control channel.

2. The method of claim 1 , wherein the first set of radio resources includes candidate control channels that constitute an enhanced common search space.

3. The method of claim 1 , wherein the first set of radio resources further includes candidate control channels that constitute an enhanced UE-specific search space.

4. The method of claim 1 , wherein the dynamic indicator channel contains information of the size of the first set of radio resources.

5. The method of claim 1 , wherein an offset value to the location of the first set of radio resources is further applied based on a predefined rule.

6. The method of claim 1 , wherein the dynamic indicator channel contains an offset value to the location of the first set of radio resources.

7. The method of claim 6 , wherein the offset is a physical offset; and the basic unit of the physical offset is a Physical Radio Block (PRB) pair.

8. The method of claim 6 , wherein the offset is a logical offset; and the basic unit of the logical offset is an enhanced control channel element (ECCE) or an enhanced resource element group (EREG).

9. The method of claim 1 , wherein the dynamic indicator channel includes an index for resource size in a table.

10. The method of claim 9 , wherein the table defines the sizes of the first set of radio resources according to different index.

11. The method of claim 1 , wherein the location of the first set of radio resources varies according to a predefined rule in every one or multiple subframes.

12. The method of claim 11 , wherein the predefined rule is based on a function of a cell ID; and the cell ID is a physical cell ID or a virtual cell ID.

13. The method of claim 1 , wherein the dynamic indicator channel is transmitted in every subframe or a couple of subframes.

14. The method of claim 1 , further comprising:

receiving the dynamic indicator channel within a second set of radio resources.

15. The method of claim 14 , wherein the second set of radio resources is orthogonal to the first set of radio resource; or the second set of radio resources overlaps with the first set of radio resource fully or partially.

16. The method of claim 14 , wherein the second set of radio resources is fixed at the edge of a downlink channel bandwidth or the central of a downlink channel bandwidth.

17. An apparatus for obtaining scheduling information of a data channel, operating as User Equipment (UE), comprising:

an RF signal processing device, configured to receive a dynamic indicator channel; and

a processor, coupled to the RF signal processing device and configured to determine a first set of radio resources by decoding the dynamic indicator channel,

wherein the dynamic indicator channel indicates a location of the first set of radio resources,

decoding a physical control channel in the determined first set of radio resources; and

obtaining scheduling information of the data channel that carries a message from the decoded physical control channel.

18. The apparatus of claim 17 , wherein the first set of radio resources includes candidate control channels that constitute an enhanced common search space.

19. The apparatus of claim 17 , wherein the first set of radio resources further includes candidate control channels that constitute an enhanced UE-specific search space.

20. The apparatus of claim 17 , wherein the dynamic indicator channel contains information of the size of the first set of radio resources.

21. The apparatus of claim 17 , wherein an offset value to the location of the first set of radio resources is further applied based on a predefined rule.

22. The apparatus of claim 17 , wherein the dynamic indicator channel contains an offset value to the location of the first set of radio resources.

23. The apparatus of claim 22 , wherein the offset is a physical offset; and the basic unit of the physical offset is a PRB pair.

24. The apparatus of claim 22 , wherein the offset is a logical offset; and the basic unit of the logical offset is an enhanced control channel element (ECCE) or an enhanced resource element group (EREG).

25. The apparatus of claim 17 , wherein the dynamic indicator channel includes an index for resource size in a table.

26. The apparatus of claim 24 , wherein the table defines the sizes of the first set of radio resources according to different index.

27. The apparatus of claim 17 , wherein the location of the first set of radio resources varies according to a predefined rule in every one or multiple subframes.

28. The apparatus of claim 27 , wherein the predefined rule is based on a function of a cell ID; and the cell ID is a physical cell ID or a virtual cell ID.

29. The apparatus of claim 17 , wherein the dynamic indicator channel is transmitted in every subframe or a couple of subframes.

30. The apparatus of claim 17 , wherein the RF signal processing device receive the dynamic indicator channel within a second set of radio resources.

31. The apparatus of claim 30 , wherein the second set of radio resources is orthogonal to the first set of radio resource; or the second set of radio resources overlaps with the set of radio resource fully or partially.

32. The apparatus of claim 30 , wherein the second set of radio resources is fixed at the edge of a downlink channel bandwidth or the central of a downlink channel bandwidth.