FREQUENCY HOPPING FOR CONTROL RESOURCE SET WITH SINGLE CARRIER WAVEFORM

• US 20180288747A1
• Filed: 02/19/2018
• Published: 10/04/2018
• Est. Priority Date: 03/30/2017
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Sun, Jing, Luo, Tao, Akkarakaran, Sony, Malik, Rahul, Kadous, Tamer, Reddy, Akula
• Granted Patent: US 11,032,808 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04B 1/7156 Arrangements for sequence synchronisation
• CPC Class Codes: H04B 7/18582 Arrangements for data linking, i.e. for data framing, for error recovery, for multiple access
• CPC Class Codes: H04L 27/2602 Signal structure
• CPC Class Codes: H04L 27/2605 Symbol extensions, e.g. Zero Tail, Unique Word [UW]
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0012 Hopping in multicarrier systems for frequency hopping in spread spectrum systems H04B1/713
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

Methods, systems, and devices for wireless communication are described. A base station may identify control information to be transmitted, in a slot, to a user equipment (UE). The base station may determine a configuration for splitting a control resource set for the control information into a first component control resource set and a second component control resource set within a supported bandwidth of the UE. The first component control resource set may be frequency diverse and time diverse from the second component control resource set. The base station may transmit the configuration to the UE.

Claims

1. A method for wireless communication, comprising:

identifying control information to be transmitted, in a slot, to a user equipment (UE);

determining a configuration for splitting a control resource set for the control information into a first component control resource set and a second component control resource set within a supported bandwidth of the UE, the first component control resource set being frequency diverse and time diverse from the second component control resource set; and

transmitting the configuration to the UE.

2. The method of claim 1, further comprising:

transmitting a demodulation reference signal (DMRS) and the control information in the first component control resource set and the second component control resource set according to the configuration.

3. The method of claim 1, further comprising:

transmitting the first component control resource set comprising a first portion of coded bits of the control information to the UE; and

transmitting the second component control resource set comprising a second portion of coded bits of the control information to the UE.

4. The method of claim 1, further comprising:

selecting, based at least in part on the supported bandwidth of the UE, frequency ranges of the first component control resource set and the second component control resource set.

5. The method of claim 1, wherein a first frequency range associated with the first component control resource set and a second frequency range associated with the second component control resource set are proximate to opposing ends of the supported bandwidth of the UE.

6. The method of claim 1, wherein the supported bandwidth of the UE is less than an available system bandwidth.

7. The method of claim 1, wherein the first component control resource set is a same size as the second component control resource set with respect to time-frequency resources.

8. The method of claim 1, further comprising:

identifying one or more control channel elements (CCEs) associated with the control information; and

mapping each CCE of the one or more CCEs into a first component CCE associated with the first component control resource set and a second component CCE associated with the second component control resource set.

9. The method of claim 8, further comprising:

mapping each CCE of the one or more CCEs according to a component CCE mapping scheme.

10. The method of claim 9, wherein the component CCE mapping scheme comprises mapping each component CCE sequentially in time between the first component control resource set and the second component control resource set.

11. The method of claim 9, wherein the component CCE mapping scheme comprises:

indexing each component CCE sequentially in time within each of the first component control resource set and the second component control resource set;

the method further comprising permutating the component CCEs within each of the first component control resource set and the second component control resource set using the component CCE index and a random seed; and

mapping each component CCE in the first component control resource set and the second component control resource set according to the permutated component CCE index.

12. The method of claim 11, wherein the random seed is selected based on one or more of a slot index of the slot, an index associated with each of the first component control resource set and the second component control resource set, and a base station configured parameter.

13. The method of claim 1, wherein the control information is to be transmitted to the UE in a single carrier transmission.

14. A method for wireless communication, comprising:

receiving, at a user equipment (UE), signaling identifying a configuration for a control resource set in a slot, wherein the control resource set is split into a first component control resource set and a second component control resource set within a supported bandwidth of the UE, the first component control resource set being frequency diverse and time diverse from the second component control resource set; and

receiving control information in the first component control resource set and the second component control resource set according to the configuration.

15. The method of claim 14, further comprising:

receiving a demodulation reference signal (DMRS) in the first component control resource set and the second component control resource set according to the configuration.

16. The method of claim 14, further comprising:

identifying, based at least in part on a supported bandwidth of the UE, a first frequency range associated with the first component control resource set used for transmitting the control information and a second frequency range associated with the second component control resource set used for transmitting the control information.

17. The method of claim 16, wherein the first frequency range and the second frequency range are proximate to opposing ends of the supported bandwidth of the UE.

18. The method of claim 16, further comprising:

receiving the signaling identifying the configuration during a radio resource configuration (RRC) exchange between a base station and the UE.

19. The method of claim 14, further comprising:

identifying a mapping of one or more control channel elements (CCEs) associated with the control information, the mapping comprising each CCE of the one or more CCEs being mapped into a first component CCE associated with the first component control resource set and a second component CCE associated with the second component control resource set.

20. The method of claim 19, wherein the mapping comprises each component CCE being mapped sequentially in time between the first component control resource set and the second component control resource set.

21. The method of claim 19, wherein the mapping comprises each component CCE being indexed sequentially in time within each of the first component control resource set and the second component control resource set, the component CCEs within each of the first component control resource set and the second component control resource set being permutated using the component CCE index and a random seed, and each component CCE in the first component control resource set and the second component control resource set being mapped according to the permutated component CCE index.

22. The method of claim 14, wherein the first component control resource set is the same size as the second component control resource set with respect to time-frequency resources.

23. The method of claim 14, wherein the signal identifying the configuration for the control resource set in a slot is received in a single carrier transmission.

24. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to;

identify control information to be transmitted, in a slot, to a user equipment (UE);

determine a configuration for splitting a control resource set for the control information into a first component control resource set and a second component control resource set within a supported bandwidth of the UE, the first component control resource set being frequency diverse and time diverse from the second component control resource set; and

transmit the configuration to the UE.

25. The apparatus of claim 24, wherein the instructions are further executable by the processor to cause the apparatus to:

transmit a demodulation reference signal (DMRS) and the control information in the first component control resource set and the second component control resource set according to the configuration.

26. The apparatus of claim 24, wherein the instructions are further executable by the processor to cause the apparatus to:

transmit the first component control resource set comprising a first portion of coded bits of the control information to the UE; and

transmit the second component control resource set comprising a second portion of coded bits of the control information to the UE.

27. The apparatus of claim 24, wherein the instructions are further executable by the processor to cause the apparatus to:

select, based at least in part on the supported bandwidth of the UE, frequency ranges of the first component control resource set and the second component control resource set.

28. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and executable by the processor to cause the apparatus to;

receive, at a user equipment (UE), signaling identifying a configuration for a control resource set in a slot, wherein the control resource set is split into a first component control resource set and a second component control resource set within a supported bandwidth of the UE, the first component control resource set being frequency diverse and time diverse from the second component control resource set; and

receive control information in the first component control resource set and the second component control resource set according to the configuration.

29. The apparatus of claim 28, wherein the instructions are further executable by the processor to cause the apparatus to:

receive a demodulation reference signal (DMRS) in the first component control resource set and the second component control resource set according to the configuration.

30. The apparatus of claim 28, wherein the instructions are further executable by the processor to cause the apparatus to:

identify, based at least in part on a supported bandwidth of the UE, a first frequency range associated with the first component control resource set used for transmitting the control information and a second frequency range associated with the second component control resource set used for transmitting the control information.