TRANSMISSION PUNCTURING FOR CO-EXISTENCE ON A SHARED COMMUNICATION MEDIUM

• US 20160095039A1
• Filed: 09/22/2015
• Published: 03/31/2016
• Est. Priority Date: 09/26/2014
• Status: Abandoned Application

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: VALLIAPPAN, Nachiappan, KADOUS, Tamer Adel, SADEK, Ahmed Kamel
• Application Number:
  US14/861,769
• Publication Number:
  US 20160095039A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 16/14 Spectrum sharing arrangements between different networks
• CPC Class Codes: H04W 36/14 Reselecting a network or an air interface
• CPC Class Codes: H04W 52/04 TPC
• CPC Class Codes: H04W 52/242 taking into account path loss
• CPC Class Codes: H04W 52/44 in connection with interruption of transmission
• CPC Class Codes: H04W 72/1215 for collaboration of different radio technologies
• CPC Class Codes: H04W 76/28 Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Abstract

Techniques for co-existence on a shared communication medium are disclosed. In one example, transmission in accordance with a first Radio Access Technology (RAT) may be punctured on one or more active periods of a Discontinuous Transmission (DTX) communication pattern based on monitoring of signaling associated with a second RAT. In addition or as an alternative, a transmission power level of an access point for transmission in accordance with a first RAT may be reduced based on one or more signal timing characteristics of signaling associated with a second RAT.

Claims

1. A communication method, comprising:

cycling operation of a first Radio Access Technology (RAT) between active periods and inactive periods of transmission, on a communication medium shared with a second RAT, in accordance with a Discontinuous Transmission (DTX) communication pattern;

monitoring second RAT signaling on the communication medium; and

puncturing transmission in accordance with the first RAT on one or more of the active periods of the DTX communication pattern based on the monitoring.

2. The method of claim 1, the puncturing comprising puncturing in accordance with a puncturing pattern that defines a transmission gap duration and a transmission gap periodicity.

3. The method of claim 2, further comprising setting the transmission gap duration and the transmission gap periodicity based on at least one of:

a latency target for the second RAT;

a signaling energy of the monitored second RAT signaling;

a channel type, primary or secondary, of the monitored second RAT signaling;

or

a combination thereof.

4. The method of claim 2, further comprising:

detecting, based on the monitored second RAT signaling, a number of second RAT access points having a signaling energy above a backoff threshold associated with the second RAT; and

setting the transmission gap duration and the transmission gap periodicity based on the number of second RAT access points detected.

5. The method of claim 2, further comprising setting one or more cycling parameters of the DTX communication pattern based on the puncturing pattern.

6. The method of claim 1, the puncturing comprising:

designating one or more subframes for data channel operation with respect to one or more corresponding symbol periods; and

refraining from scheduling data during the one or more corresponding symbol periods.

7. The method of claim 1, the puncturing comprising:

designating one or more subframes for broadcast channel operation to reserve one or more corresponding symbol periods for a multi-cell transmission; and

refraining from transmitting during the one or more corresponding symbol periods.

8. The method of claim 1:

the monitoring comprising measuring a signaling energy associated with the second RAT signaling; and

the puncturing comprising puncturing in response to the measured signaling energy being above a backoff threshold associated with the second RAT.

9. The method of claim 1:

the monitoring comprising detecting latency-sensitive traffic associated with the second RAT signaling; and

the puncturing comprising puncturing in response to the detected latency-sensitive traffic.

10. The method of claim 1:

the communication medium comprising one or more time, frequency, or space resources on an unlicensed radio frequency band;

the first RAT comprising Long Term Evolution (LTE) technology; and

the second RAT comprising Wi-Fi technology.

11. A communication apparatus, comprising:

a first transceiver configured to cycle operation of a first Radio Access Technology (RAT) between active periods and inactive periods of transmission, on a communication medium shared with a second RAT, in accordance with a Discontinuous Transmission (DTX) communication pattern;

a second transceiver configured to monitor second RAT signaling on the communication medium;

at least one processor; and

at least one memory coupled to the at least one processor, the at least one processor and the at least one memory being configured to puncture transmission in accordance with the first RAT on one or more of the active periods of the DTX communication pattern based on the monitoring.

12. The apparatus of claim 11, the at least one processor and the at least one memory being configured to puncture the transmission in accordance with a puncturing pattern that defines a transmission gap duration and a transmission gap periodicity.

13. The apparatus of claim 12, the at least one processor and the at least one memory being further configured to set the transmission gap duration and the transmission gap periodicity based on at least one of:

a latency target for the second RAT;

a signaling energy of the monitored second RAT signaling;

a channel type, primary or secondary, of the monitored second RAT signaling;

or

a combination thereof.

14. The apparatus of claim 12, the at least one processor and the at least one memory being configured to:

detect, based on the monitored second RAT signaling, a number of second RAT access points having a signaling energy above a backoff threshold associated with the second RAT; and

set the transmission gap duration and the transmission gap periodicity based on the number of second RAT access points detected.

15. The apparatus of claim 12, the at least one processor and the at least one memory being further configured to set one or more cycling parameters of the DTX communication pattern based on the puncturing pattern.

16. The apparatus of claim 11, the at least one processor and the at least one memory being configured to puncture the transmission by:

designating one or more subframes for data channel operation with respect to one or more corresponding symbol periods; and

refraining from scheduling data during the one or more corresponding symbol periods.

17. The apparatus of claim 11, the at least one processor and the at least one memory being configured to puncture the transmission by:

designating one or more subframes for broadcast channel operation to reserve one or more corresponding symbol periods for a multi-cell transmission; and

refraining from transmitting during the one or more corresponding symbol periods.

18. The apparatus of claim 11, the at least one processor and the at least one memory being further configured to:

measure a signaling energy associated with the second RAT signaling; and

puncture the transmission in response to the measured signaling energy being above a backoff threshold associated with the second RAT.

19. The apparatus of claim 11, the at least one processor and the at least one memory being further configured to:

detect latency-sensitive traffic associated with the second RAT signaling; and

puncture the transmission in response to the detected latency-sensitive traffic.

20. The apparatus of claim 11:

the communication medium comprising one or more time, frequency, or space resources on an unlicensed radio frequency band;

the first RAT comprising Long Term Evolution (LTE) technology; and

the second RAT comprising Wi-Fi technology.

21. A communication apparatus, comprising:

means for cycling operation of a first Radio Access Technology (RAT) between active periods and inactive periods of transmission, on a communication medium shared with a second RAT, in accordance with a Discontinuous Transmission (DTX) communication pattern;

means for monitoring second RAT signaling on the communication medium; and

means for puncturing transmission in accordance with the first RAT on one or more of the active periods of the DTX communication pattern based on the monitoring.

22. The apparatus of claim 21, the means for puncturing comprising means for puncturing in accordance with a puncturing pattern that defines a transmission gap duration and a transmission gap periodicity.

23. The apparatus of claim 22, further comprising means for setting the transmission gap duration and the transmission gap periodicity based on at least one of:

a latency target for the second RAT;

a signaling energy of the monitored second RAT signaling;

a channel type, primary or secondary, of the monitored second RAT signaling;

or

a combination thereof.

24. The apparatus of claim 21:

the means for monitoring comprising means for measuring a signaling energy associated with the second RAT signaling; and

the means for puncturing comprising means for puncturing in response to the measured signaling energy being above a backoff threshold associated with the second RAT.

25. The apparatus of claim 21:

the means for monitoring comprising means for detecting latency-sensitive traffic associated with the second RAT signaling; and

the means for puncturing comprising means for puncturing in response to the detected latency-sensitive traffic.

26. A non-transitory computer-readable medium, comprising:

code for cycling operation of a first Radio Access Technology (RAT) between active periods and inactive periods of transmission, on a communication medium shared with a second RAT, in accordance with a Discontinuous Transmission (DTX) communication pattern;

code for monitoring second RAT signaling on the communication medium; and

code for puncturing transmission in accordance with the first RAT on one or more of the active periods of the DTX communication pattern based on the monitoring.

27. The non-transitory computer-readable medium of claim 26, the code for puncturing comprising code for puncturing in accordance with a puncturing pattern that defines a transmission gap duration and a transmission gap periodicity.

28. The non-transitory computer-readable medium of claim 27, further comprising code for setting the transmission gap duration and the transmission gap periodicity based on at least one of:

a latency target for the second RAT;

a signaling energy of the monitored second RAT signaling;

a channel type, primary or secondary, of the monitored second RAT signaling;

or

a combination thereof.

29. The non-transitory computer-readable medium of claim 26:

the code for monitoring comprising code for measuring a signaling energy associated with the second RAT signaling; and

the code for puncturing comprising code for puncturing in response to the measured signaling energy being above a backoff threshold associated with the second RAT.

30. The non-transitory computer-readable medium of claim 26:

the code for monitoring comprising code for detecting latency-sensitive traffic associated with the second RAT signaling; and

the code for puncturing comprising code for puncturing in response to the detected latency-sensitive traffic.