Methods for transmitting and receiving of control channel in wireless communication systems

• US 10,327,247 B2
• Filed: 12/31/2015
• Issued: 06/18/2019
• Est. Priority Date: 06/21/2011
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Noh, Tae Gyun, Ko, Young Jo, Seo, Bang Won, Ahn, Jae Young
• Primary Examiner(s): Ko, Sithu
• Application Number:
  US14/986,292
• Publication Number:
  US 20160119911A1
• Time in Patent Office: 1,265 Days
• 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 4/20 Services signaling; Auxiliary data signalling, i.e. transmitting data via a non-traffic channel
• CPC Class Codes: H04W 72/046 the resource being in the space domain, e.g. beams
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A method of transmitting and receiving a control channel in a wireless communication system is provided. A base station allocates a data channel to a radio resource, adds start position information of the data channel into a payload of a control channel, and performs signaling for indication information on the start position information added into the payload of the control channel to a terminal. Accordingly, the legacy system and the enhanced system can efficiently transmit a control channel.

Claims

1. A communication method, comprising:

transmitting a first message, the first message comprising first information associated with a first identifier and second information associated with a second identifier, wherein the first information indicates a first starting Physical Downlink Shared Channel (PDSCH) Orthogonal Frequency Division Multiplexing (OFDM) symbol and the second information indicates a second starting PDSCH OFDM symbol;

transmitting Downlink Control Information (DCI) to a terminal on a Physical Downlink Control Channel (PDCCH), the DCI indicating the first identifier; and

transmitting data to the terminal on a PDSCH, wherein the PDSCH starts at the first PDSCH OFDM symbol.

2. The method of claim 1, wherein the first identifier comprises a predetermined number of bits designating one of three possible starting PDSCH OFDM symbols.

3. The method of claim 1, wherein the PDCCH is transmitted from a first base station and the PDSCH is transmitted from a second base station, the second base station being different from the first base station.

4. The method of claim 1, wherein the first message is an RRC (Radio Resource Control) message.

29. The method of claim 1, wherein the first starting PDSCH OFDM symbol is different from the second starting PDSCH OFDM symbol.

5. A communication apparatus, comprising:

a memory; and

a processor operably coupled to the memory,

wherein the processor, when executing program instructions stored in the memory, is configured to;

cause the communication apparatus to transmit a first message, the first message comprising first information associated with a first identifier and second information associated with a second identifier, wherein the first information indicates a first starting Physical Downlink Shared Channel (PDSCH) Orthogonal Frequency Division Multiplexing (OFDM) symbol and the second information indicates a second starting PDSCH OFDM symbol;

cause the communication apparatus to transmit Downlink Control Information (DCI) to a terminal on a Physical Downlink Control Channel (PDCCH), the DCI indicating the first identifier; and

cause the communication apparatus to transmit data to the terminal on a PDSCH, wherein the PDSCH starts at the first PDSCH OFDM symbol.

6. The communication apparatus of claim 5, wherein the first identifier comprises a predetermined number of bits designating one of three possible starting PDSCH OFDM symbols.

7. The communication apparatus of claim 5, wherein the PDCCH is transmitted from a first base station and the PDSCH is transmitted from a second base station, the second base station being different from the first base station.

8. The communication apparatus of claim 5, wherein the first message is an RRC (Radio Resource Control) message.

30. The communication apparatus of claim 5, wherein the first starting PDSCH OFDM symbol is different from the second starting PDSCH OFDM symbol.

9. A communication method, comprising:

receiving, at a terminal, a first message, the first message comprising first information associated with a first identifier and second information associated with a second identifier, wherein the first information indicates a first starting Physical Downlink Shared Channel (PDSCH) Orthogonal Frequency Division Multiplexing (OFDM) symbol and the second information indicates a second starting PDSCH OFDM symbol;

receiving, at the terminal, Downlink Control Information (DCI) on a Physical Downlink Control Channel (PDCCH), the DCI indicating the first identifier; and

receiving, at the terminal, data on a PDSCH, wherein the PDSCH starts at the first PDSCH OFDM symbol.

10. The method of claim 9, wherein the first identifier comprises a predetermined number of bits designating one of three possible starting PDSCH OFDM symbols.

11. The method of claim 9, wherein the PDCCH is received from a first base station and the PDSCH is received from a second base station, the second base station being different from the first base station.

12. The method of claim 9, wherein the PDCCH is associated with one cell and the PDSCH is associated with another cell.

13. The method of claim 9, wherein the first message is an RRC (Radio Resource Control) message.

31. The method of claim 9, wherein the first starting PDSCH OFDM symbol is different from the second starting PDSCH OFDM symbol.

14. A wireless device comprising a receiver, the receiver being configured to:

receive a first message, the first message comprising first information associated with a first identifier and second information associated with a second identifier, wherein the first information indicates a first starting Physical Downlink Shared Channel (PDSCH) Orthogonal Frequency Division Multiplexing (OFDM) symbol and the second information indicates a second starting PDSCH OFDM symbol;

receive Downlink Control Information (DCI) on a Physical Downlink Control Channel (PDCCH), the DCI indicating the first identifier; and

receive data on a PDSCH, wherein the PDSCH starts at the first PDSCH OFDM symbol.

15. The device of claim 14, wherein the first identifier comprises a predetermined number of bits designating one of three possible starting PDSCH OFDM symbols.

16. The device of claim 14, wherein the PDCCH is received from a first base station and the PDSCH is received from a second base station, the second base station being different from the first base station.

17. The device of claim 14, wherein the PDCCH is associated with one cell and the PDSCH is associated with another cell.

18. The device of claim 14, wherein the first message is an RRC (Radio Resource Control) message.

32. The device of claim 14, wherein the first starting PDSCH OFDM symbol is different from the second starting PDSCH OFDM symbol.

19. A communication apparatus, comprising:

a memory; and

a processor coupled to the memory,

wherein the processor, when executing program instructions stored in the memory, is configured to;

cause the communication apparatus to receive a first message, the first message comprising first information associated with a first identifier and second information associated with a second identifier, wherein the first information indicates a first starting Physical Downlink Shared Channel (PDSCH) Orthogonal Frequency Division Multiplexing (OFDM) symbol and the second information indicates a second starting PDSCH OFDM symbol;

cause the communication apparatus to receive Downlink Control Information (DCI) on a Physical Downlink Control Channel (PDCCH), the DCI indicating the first identifier; and

cause the communication apparatus to receive data on a PDSCH, wherein the PDSCH starts at the first PDSCH OFDM symbol.

20. The communication apparatus of claim 19, wherein the first identifier comprises a predetermined number of bits designating one of three possible starting PDSCH OFDM symbols.

21. The communication apparatus of claim 19, wherein the PDCCH is received from a first base station and the PDSCH is received from a second base station, the second base station being different from the first base station.

22. The communication apparatus of claim 19, wherein the PDCCH is associated with one cell and the PDSCH is associated with another cell.

23. The communication apparatus of claim 19, wherein the first message is an RRC (Radio Resource Control) message.

33. The communication apparatus of claim 19, wherein the first starting PDSCH OFDM symbol is different from the second starting PDSCH OFDM symbol.

24. A communication device for a terminal, the device comprising:

a memory; and

a processor operably coupled to the memory,

wherein the processor, when executing program instructions stored in the memory, is configured to;

cause the device to receive a first message, the first message comprising first information associated with a first identifier and second information associated with a second identifier, wherein the first information indicates a first starting Physical Downlink Shared Channel (PDSCH) Orthogonal Frequency Division Multiplexing (OFDM) symbol and the second information indicates a second starting PDSCH OFDM symbol;

cause the device to receive Downlink Control Information (DCI) on a Physical Downlink Control Channel (PDCCH), the DCI indicating the first identifier; and

cause the device to receive data on a PDSCH, wherein the PDSCH starts at the first PDSCH OFDM symbol.

25. The device of claim 24, wherein the first identifier comprises a predetermined number of bits designating one of three possible starting PDSCH OFDM symbols.

26. The device of claim 24, wherein the PDCCH is received from a first base station and the PDSCH is received from a second base station, the second base station being different from the first base station.

27. The device of claim 24, wherein the PDCCH is associated with one cell and the PDSCH is associated with another cell.

28. The device of claim 24, wherein the first message is an RRC (Radio Resource Control) message.

34. The device of claim 24, wherein the first starting PDSCH OFDM symbol is different from the second starting PDSCH OFDM symbol.