Techniques for selecting subframe type or for interleaving signals for wireless communications over unlicensed spectrum

Patent metadata

Field	Value
Publication number	US-2017111802-A1
Application number	US-201615390038-A
Country	US
Kind code	A1
Filing date	Dec 23, 2016
Priority date	May 20, 2013
Publication date	Apr 20, 2017
Grant date	—

Abstract

Methods and apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. A first method includes comparing past transmission activity on an unlicensed spectrum to an activity threshold, transmitting a first subframe type in the unlicensed spectrum during a next active transmission when the past transmission activity is greater than the activity threshold, and transmitting a second subframe type in the unlicensed spectrum during a next active transmission when the past transmission activity is lesser than the activity threshold, the second subframe type comprising a more robust subframe type than the first subframe type. A second method includes generating one or both of PUCCH signals and PUSCH signals based on interleaved signals that increase nominal bandwidth occupancy in an unlicensed spectrum, and transmitting the generated signals in the unlicensed spectrum. A third method includes receiving the PUCCH signals and the PUSCH signals.

First claim

What is claimed is:

What is claimed is:

1 . A method for wireless communications, comprising:
generating one or both of physical uplink control channel (PUCCH) signals and physical uplink shared channel (PUSCH) signals based on interleaved signals that increase nominal bandwidth occupancy in an unlicensed spectrum; and transmitting the generated signals in the unlicensed spectrum.

2 . The method of claim 1 , wherein the interleaved signals comprise interleaved orthogonal frequency division multiplexing (I-OFDM) waveforms.

3 . The method of claim 1 , wherein the interleaved signals comprise interleaved frequency division multiplexing (IFDM) waveforms.

4 . An apparatus for wireless communications, comprising:
means for generating one or both of physical uplink control channel (PUCCH) signals and physical uplink shared channel (PUSCH) signals based on interleaved signals that increase nominal bandwidth occupancy in an unlicensed spectrum; and means for transmitting the generated signals in the unlicensed spectrum.

5 . The apparatus of claim 4 , wherein the interleaved signals comprise interleaved orthogonal frequency division multiplexing (I-OFDM) waveforms.

6 . The apparatus of claim 4 , wherein the interleaved signals comprise interleaved frequency division multiplexing (IFDM) waveforms.

7 . An apparatus for wireless communications, comprising:
a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to: generate one or both of physical uplink control channel (PUCCH) signals and physical uplink shared channel (PUSCH) signals based on interleaved signals that increase nominal bandwidth occupancy in an unlicensed spectrum; and transmit the generated signals in the unlicensed spectrum.

8 . The apparatus of claim 7 , wherein the interleaved signals comprise interleaved orthogonal frequency division multiplexing (I-OFDM) waveforms.

9 . The apparatus of claim 7 , wherein the interleaved signals comprise interleaved frequency division multiplexing (IFDM) waveforms.

10 . A computer program product for communications by a wireless communications apparatus in a wireless communications system, the computer program product comprising a non-transitory computer-readable medium storing instructions executable by a processor to cause the wireless communications apparatus to:
generate one or both of physical uplink control channel (PUCCH) signals and physical uplink shared channel (PUSCH) signals based on interleaved signals that increase nominal bandwidth occupancy in an unlicensed spectrum; and transmit the generated signals in the unlicensed spectrum.

11 . The computer program product of claim 10 , wherein the interleaved signals comprise interleaved orthogonal frequency division multiplexing (I-OFDM) waveforms.

12 . The computer program product of claim 10 , wherein the interleaved signals comprise interleaved frequency division multiplexing (IFDM) waveforms.

13 . A method for wireless communications, comprising:
receiving, in an unlicensed spectrum, one or both of physical uplink control channel (PUCCH) signals and physical uplink shared channel (PUSCH) signals based on interleaved signals that increase nominal bandwidth occupancy in the unlicensed spectrum.

14 . The method of claim 13 , wherein the interleaved signals comprise interleaved orthogonal frequency division multiplexing (I-OFDM) waveforms.

15 . The method of claim 13 , wherein the interleaved signals comprise interleaved frequency division multiplexing (IFDM) waveforms.

16 . An apparatus for wireless communications, comprising:
means for receiving, in an unlicensed spectrum, one or both of physical uplink control channel (PUCCH) signals and physical uplink shared channel (PUSCH) signals based on interleaved signals that increase nominal bandwidth occupancy in the unlicensed spectrum.

17 . The apparatus of claim 16 , wherein the interleaved signals comprise interleaved orthogonal frequency division multiplexing (I-OFDM) waveforms.

18 . The apparatus of claim 16 , wherein the interleaved signals comprise interleaved frequency division multiplexing (IFDM) waveforms.

19 . An apparatus for wireless communications, comprising:
a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to: receive, in an unlicensed spectrum, one or both of physical uplink control channel (PUCCH) signals and physical uplink shared channel (PUSCH) signals based on interleaved signals that increase nominal bandwidth occupancy in the unlicensed spectrum.

20 . The apparatus of claim 19 , wherein the interleaved signals comprise interleaved orthogonal frequency division multiplexing (I-OFDM) waveforms.

21 . The apparatus of claim 19 , wherein the interleaved signals comprise interleaved frequency division multiplexing (IFDM) waveforms.

22 . A computer program product for communications by a wireless communications apparatus in a wireless communications system, the computer program product comprising a non-transitory computer-readable medium storing instructions executable by a processor to cause the wireless communications apparatus to:
receive, in an unlicensed spectrum, one or both of physical uplink control channel (PUCCH) signals and physical uplink shared channel (PUSCH) signals based on interleaved signals that increase nominal bandwidth occupancy in the unlicensed spectrum.

23 . The computer program product of claim 22 , wherein the interleaved signals comprise interleaved orthogonal frequency division multiplexing (I-OFDM) waveforms.

24 . The computer program product of claim 22 , wherein the interleaved signals comprise interleaved frequency division multiplexing (IFDM) waveforms.

Assignees

• Qualcomm Inc

Inventors

• Bhushan Naga
• Malladi Durga Prasad
• Wei Yongbin
• Gaal Peter
• Luo Tao
• Ji Tingfang
• Horn Gavin Bernard
• Chen Wanshi
• Damnjanovic Aleksandar

Classifications

• H04L5/001 Primary

  the frequencies being arranged in component carriers · CPC title

• H04W72/21

  in the uplink direction of a wireless link, i.e. towards the network · CPC title

• H04W72/541

  using the level of interference · CPC title

• H04W24/02

  Arrangements for optimising operational condition · CPC title

• H04L1/00

  Arrangements for detecting or preventing errors in the information received {(correcting synchronisation H04L7/00)} · CPC title