Methods and apparatus of obtaining scheduling information of data channel

• US 9,750,046 B2
• Filed: 04/03/2014
• Issued: 08/29/2017
• Est. Priority Date: 04/03/2013
• Status: Active Grant

• Current Assignee: HFI Innovation, Inc. (MediaTek, Inc.)
• Original Assignee: MediaTek Singapore Pte. Ltd. (MediaTek, Inc.)
• Inventors: Chen, Hua-Min, Liao, Pei-Kai, Zhuang, Xiangyang
• Primary Examiner(s): Mew, Kevin
• Application Number:
  US14/779,176
• Publication Number:
  US 20160050687A1
• Time in Patent Office: 1,244 Days
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0091 Signaling for the administration of the divided path
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A method includes: 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 detecting a physical control channel in the determined first set of radio resources; and obtaining scheduling information of a data channel that carries a message from the decoded physical control channel.

Claims

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.