Control channel configuration in partial and full subframes

• US 10,499,382 B2
• Filed: 10/17/2016
• Issued: 12/03/2019
• Est. Priority Date: 10/17/2015
• Status: Active Grant

• Current Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Original Assignee: Comcast Cable Communications LLC (Comcast Corporation)
• Inventors: Dinan, Esmael Hejazi
• Primary Examiner(s): Atkins, George C
• Application Number:
  US15/295,977
• Publication Number:
  US 20170111888A1
• Time in Patent Office: 1,142 Days
• Field of Search: None
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/044 based on the type of the allocated resource
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

A wireless device receives at least one radio resource control (RRC) message comprising a field indicating a starting symbol for an enhanced physical downlink control channel (ePDCCH). The wireless device receives ePDCCH signal in a subframe. The ePDCCH starts from the starting symbol when the subframe is a full subframe. The ePDCCH starts from the starting symbol plus an offset value when the subframe is a partial subframe.

Claims

1. A method comprising:

receiving, by a wireless device, at least one radio resource control (RRC) message comprising a field indicating a starting symbol for an enhanced physical downlink control channel (ePDCCH); and

receiving, via an ePDCCH, a signal, wherein;

the ePDCCH starts from the starting symbol for a full subframe; and

based on the RRC message, the ePDCCH starts from the starting symbol plus a non-zero offset symbol value for a partial subframe.

2. The method of claim 1, wherein:

the at least one RRC message further comprises configuration parameters comprising one or more parameters indicating resource blocks (RBs) for the ePDCCH;

the one or more parameters indicate one or two sets of RB pairs; and

the field indicating the starting symbol applies to the one or two sets of RB pairs.

3. The method of claim 1, wherein the at least one RRC message comprises a parameter indicating one or more possible starting positions of transmission in a subframe, and further comprising determining, based on the parameter, the non-zero offset symbol value.

4. The method of claim 1, further comprising:

receiving a physical downlink shared channel (PDSCH);

determining, based on the starting symbol, a PDSCH starting symbol, wherein;

the PDSCH starts from the starting symbol for a full subframe; and

the PDSCH starts from the starting symbol plus the non-zero offset symbol value for a partial subframe.

5. The method of claim 1, further comprising determining, based on a reference signal, whether a subframe is a full subframe or a partial subframe.

6. The method of claim 1, wherein the at least one RRC message further comprises a parameter indicating an ePDCCH subframe pattern comprising one or more subframes.

7. A wireless device comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the wireless device to;

receive at least one radio resource control (RRC) message comprising a field indicating a starting symbol for an enhanced physical downlink control channel (ePDCCH); and

receive, via the ePDCCH, a signal, wherein;

the ePDCCH starts from the starting symbol for a full subframe; and

based on the RRC message, the ePDCCH starts from the starting symbol plus a non-zero offset symbol value for a partial subframe.

8. The wireless device of claim 7, wherein:

the at least one RRC message further comprises configuration parameters comprising one or more parameters indicating resource blocks (RBs) for the ePDCCH;

the one or more parameters indicate one or two sets of RB pairs; and

the field indicating the starting symbol applies to the one or two sets of RB pairs.

9. The wireless device of claim 7, wherein:

the at least one RRC message comprises a parameter indicating one or more possible starting positions of transmission in a subframe; and

the instructions, when executed by the one or more processors, further cause the wireless device to determine the non-zero offset symbol value based on the parameter.

10. The wireless device of claim 7, wherein the instructions, when executed, further cause the wireless device to:

receive a physical downlink shared channel (PDSCH); and

determine a PDSCH starting symbol based on the starting symbol, wherein;

the PDSCH starts from the starting symbol for a full subframe; and

the PDSCH starts from the starting symbol plus the non-zero offset symbol value for a partial subframe.

11. The wireless device of claim 7, wherein the instructions, when executed, further cause the wireless device to detect, based on a reference signal, whether a subframe is a full subframe or a partial subframe.

12. The wireless device of claim 7, wherein the at least one RRC message further comprises a parameter indicating an ePDCCH subframe pattern comprising one or more subframes.

13. A method comprising:

transmitting, by a base station, at least one radio resource control (RRC) message comprising a field indicating a starting symbol for an enhanced physical downlink control channel (ePDCCH); and

transmitting, by the base stationer and via the ePDCCH a signal, wherein;

the ePDCCH starts from the starting symbol for a full subframe; and

based on the RRC message, the ePDCCH starts from the starting symbol plus a non-zero offset symbol value for a partial subframe.

14. The method of claim 13, wherein:

the at least one RRC message further comprises configuration parameters comprising one or more parameters indicating resource blocks (RBs) for the ePDCCH;

the one or more parameters indicate one or two sets of RB pairs; and

the field indicating the starting symbol applies to the one or two sets of RB pairs.

15. The method of claim 13, wherein the at least one RRC message comprises a parameter indicating one or more possible starting positions of transmission in a subframe and for determining the non-zero offset symbol value.

16. The method of claim 13, further comprising transmitting, by the base station, a physical downlink shared channel (PDSCH), wherein:

the starting symbol is for determining a PDSCH starting symbol;

the PDSCH starts from the starting symbol for a full subframe; and

the PDSCH starts from the starting symbol plus the non-zero offset symbol value for a partial subframe.

17. The method of claim 13, wherein the at least one RRC message further comprises a parameter indicating an ePDCCH subframe pattern comprising one or more subframes.

18. A base station comprising:

one or more processors; and

memory storing instructions that, when executed by the one or more processors, cause the base station to;

transmit at least one radio resource control (RRC) message comprising a field indicating a starting symbol for an enhanced physical downlink control channel (ePDCCH); and

transmit, via the ePDCCH, a signal, wherein;

the ePDCCH starts from the starting symbol for a full subframe; and

based on the RRC message, the ePDCCH starts from the starting symbol plus a non-zero offset symbol value for a partial subframe.

19. The base station of claim 18, wherein:

the at least one RRC message further comprises configuration parameters comprising one or more parameters indicating resource blocks (RBs) for the ePDCCH;

the one or more parameters indicate one or two sets of RB pairs; and

the field indicating the starting symbol applies to the one or two sets of RB pairs.

20. The base station of claim 18, wherein the at least one RRC message comprises a parameter indicating one or more possible starting positions of transmission in a subframe and for determining the non-zero offset symbol value.

21. The base station of claim 18, wherein the instructions, when executed, further cause the base station to transmit a physical downlink shared channel (PDSCH), wherein:

the starting symbol is usable to determine a PDSCH starting symbol;

the PDSCH starts from the starting symbol for a full subframe; and

the PDSCH starts from the starting symbol plus the non-zero offset symbol value for a partial subframe.

22. The base station of claim 18, wherein the at least one RRC message further comprises a parameter indicating an ePDCCH subframe pattern comprising one or more subframes.

23. A system comprising:

a base station; and

a wireless device,

wherein the base station is configured to;

transmit at least one radio resource control (RRC) message comprising a field indicating a starting symbol for an enhanced physical downlink control channel (ePDCCH); and

wherein the wireless device is configured to;

receive the at least one RRC message; and

receive, based on the field indicating the starting symbol and via the ePDCCH a signal, wherein;

the ePDCCH starts from the starting symbol for a full subframe; and

based on the RRC message, the ePDCCH starts from the starting symbol plus a non-zero offset symbol value for a partial subframe.

24. The system of claim 23, wherein:

the at least one RRC message further comprises configuration parameters comprising one or more parameters indicating resource blocks (RBs) for the ePDCCH;

the one or more parameters indicate one or two sets of RB pairs; and

the field indicating the starting symbol applies to the one or two sets of RB pairs.

25. The system of claim 23, wherein:

the at least one RRC message comprises a parameter indicating one or more possible starting positions of transmission in a subframe; and

the wireless device is further configured to determine the non-zero offset symbol value based on the parameter.

26. The system of claim 23, wherein:

the base station is further configured to transmit a physical downlink shared channel (PDSCH);

the wireless device is further configured to determine a PDSCH starting symbol based on the starting symbol;

the PDSCH starts from the starting symbol for a full subframe; and

the PDSCH starts from the starting symbol plus the non-zero offset symbol value for a partial subframe.

27. The system of claim 23, wherein the wireless device is further configured to detect, based on a reference signal, whether a subframe is a full subframe or a partial subframe.

28. The system of claim 23, wherein the at least one RRC message further comprises a parameter indicating an ePDCCH subframe pattern comprising one or more subframes.