MULTIPLEXING RULES FOR MIXED COMMUNICATION PROTOCOLS

• US 20190313419A1
• Filed: 04/02/2019
• Published: 10/10/2019
• Est. Priority Date: 04/04/2018
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Fakoorian, Seyed Ali Akbar, Sun, Jing, Zhang, Xiaoxia, Yerramalli, Srinivas, Kadous, Tamer
• Granted Patent: US 10,863,524 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 1/713 using frequency hopping
• CPC Class Codes: H04L 1/0013 Rate matching, e.g. puncturing or repetition of code symbols
• CPC Class Codes: H04L 1/0067 Rate matching H04L1/0013 and H04L1/08 take precedence
• CPC Class Codes: H04L 1/1664 the supervisory signal being transmitted together with payload signals; piggybacking
• CPC Class Codes: H04L 1/1819 with retransmission of additional or different redundancy
• CPC Class Codes: H04L 47/2416 Real-time traffic
• CPC Class Codes: H04L 47/2491 Mapping quality of service [QoS] requirements between different networks
• CPC Class Codes: H04L 47/28 in relation to timing considerations
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 5/0012 Hopping in multicarrier systems for frequency hopping in spread spectrum systems H04B1/713
• CPC Class Codes: H04L 5/003 Arrangements for allocating sub-channels of the transmission path
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04L 5/0062 Avoidance of ingress interference, e.g. ham radio channels
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04W 28/0278 using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 52/20 using error rate
• CPC Class Codes: H04W 52/346 distributing total power among users or channels
• CPC Class Codes: H04W 52/367 Power values between minimum and maximum limits, e.g. dynamic range
• CPC Class Codes: H04W 72/0473 the resource being transmission power
• CPC Class Codes: H04W 72/1215 : for collaboration of different radio technologies
• CPC Class Codes: H04W 72/21 : in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/542 : using measured or perceived quality

Abstract

Methods, systems, and devices for wireless communications are described. In systems supporting multiple communication protocol types (e.g., ultra-reliable low-latency communication and enhance mobile broadband communication), a user equipment may implement multiplexing rules for handling overlapping transmissions of different communication protocols. For example, if lower latency data supports multiplexing with higher latency data and a lower latency resource overlaps (either partially or completely) with a higher latency resource, a number of options can be taken to control multiplexing. Similarly, if low latency uplink control information supports multiplexing with a slot-based physical uplink shared channel, and the physical uplink shared channel has its own uplink control information, a number of options can be taken to control multiplexing. If slot-based uplink control information overlaps (either partially or completely) with low latency data, then, likewise, a number of options can be taken to control multiplexing. Controlling multiplexing may support meeting low latency thresholds.

Claims

1. A method for wireless communications, comprising:

identifying a first set of resources for a first transmission using a first communication protocol;

identifying an overlap in time between the first set of resources and a second set of resources for a second transmission using a second communication protocol, wherein the first communication protocol is associated with a lower latency than the second communication protocol;

processing the first transmission and the second transmission based at least in part on the overlap; and

transmitting the first transmission based at least in part on the processing.

2. The method of claim 1, wherein the processing comprises:

refraining from transmitting the second transmission in the second set of resources based at least in part on the overlap, wherein the first transmission is transmitted in the first set of resources.

3. The method of claim 1, wherein the processing comprises:

rate matching the second transmission around the first set of resources for the first transmission based at least in part on the overlap; and

transmitting the second transmission based at least in part on the rate matching, wherein the first transmission is transmitted in the first resource and the second transmission is transmitted on a subset of the second set of resources distinct in time from the first set of resources.

4. The method of claim 3, wherein the rate matching comprises puncturing the second transmission for at least one symbol of the second set of resources with the first transmission, the method further comprising:

inserting a demodulation reference signal symbol into the second transmission following the first resource based at least in part on the puncturing the second transmission for the at least one symbol of the second set of resources with the first transmission, wherein the demodulation reference signal is inserted into a first symbol of the second set of resources that directly follows the first set of resources, a symbol of the second set of resources preceding a subsequent frequency hop of the second transmission, or a combination thereof.

5. The method of claim 3, further comprising:

disabling frequency hopping for the second transmission based at least in part on the rate matching.

6. The method of claim 1, wherein the processing comprises:

allocating a first transmit power for the first transmission using the first communication protocol based at least in part on a block error rate target;

determining a second transmit power for the second transmission using the second communication protocol based at least in part on the allocated first transmit power and a maximum transmit power; and

transmitting the second transmission concurrently with at least a portion of the transmitting the first transmission based at least in part on the overlap.

7. The method of claim 1, wherein the first set of resources overlaps in time with a third set of resources comprising at least a portion of uplink control information for the second communication protocol, the method further comprising:

transmitting at least the portion of uplink control information for the second communication protocol in a portion of the second set of resources different from the third set of resources; and

rate matching data for the second transmission following the first set of resources around the at least the portion of uplink control information based at least in part on the first set of resources overlapping in time with the third set of resources comprising the at least the portion of uplink control information.

8. The method of claim 1, further comprising:

determining that concurrent transmission of the first transmission and the second transmission is disabled;

transmitting the second transmission in the second set of resources, wherein uplink control information for the first transmission using the first communication protocol is also transmitted in the second set of resources; and

disabling frequency hopping based at least in part on the determining that the concurrent transmission is disabled.

9. The method of claim 1, wherein the second set of resources comprises a plurality of frequency hopped resources and the transmitting the first transmission comprises:

transmitting redundant coded bits of uplink control information for the first communication protocol in each frequency hopped resource of the plurality of frequency hopped resources, wherein data for the first communication protocol in each frequency hopped resource of the plurality of frequency hopped resources is self-decodable based at least in part on the respective redundant coded bits of uplink control information.

10. The method of claim 1, wherein the second set of resources comprises a plurality of frequency hopped resources and the processing comprises:

mapping coded bits of uplink control information associated with the first communication protocol, coded bits of data associated with the first communication protocol, or a combination thereof to a first frequency hopped resource of the plurality of frequency hopped resources.

11. The method of claim 10, wherein a first bandwidth, a first time span, or both of the first frequency hopped resource of the plurality of frequency hopped resources are larger than a second bandwidth, a second time span, or both for at least one other frequency hopped resource of the plurality of frequency hopped resources.

12. The method of claim 1, wherein the second set of resources comprises a plurality of frequency hopped resources and the processing comprises:

mapping coded bits of hybrid automatic repeat request acknowledgment associated with the first communication protocol to a first frequency hopped resource of the plurality of frequency hopped resources.

13. The method of claim 1, wherein the processing comprises:

refraining from transmitting the second transmission in the second set of resources based at least in part on the overlap, wherein the first transmission is transmitted in the second set of resources.

14. The method of claim 1, wherein the first transmission comprises data for the first communication protocol and the second transmission comprises uplink control information for the second communication protocol.

15. The method of claim 14, wherein the processing comprises:

determining whether to transmit the first transmission in the second set of resources based at least in part on a time span of the second set of resources, a coding gain associated with the second set of resources, or a combination thereof.

16. The method of claim 14, wherein the processing comprises:

refraining from transmitting at least a first portion of the second transmission in the second set of resources based at least in part on the overlap; and

transmitting at least a second portion of the second transmission in the second set of resources based at least in part on a priority level of the second portion of the second transmission.

17. The method of claim 14, wherein the processing comprises:

indicating the uplink control information for the second communication protocol using resource selection for transmitting the data for the first communication protocol, using multiplexing with a demodulation reference signal for the data for the first communication protocol, or using a combination thereof.

18. The method of claim 1, wherein the first transmission comprises data for the first communication protocol and the second transmission comprises a scheduling request, a buffer status report, or a combination thereof for the second communication protocol.

19. The method of claim 18, wherein the processing comprises:

jointly encoding the scheduling request, the buffer status report, or the combination thereof for the second communication protocol with the data for the first communication protocol.

20. The method of claim 18, wherein the processing comprises:

transmitting the scheduling request, the buffer status report, or the combination thereof for the second communication protocol in the first set of resources with the data for the first communication protocol.

21. The method of claim 18, wherein the processing comprises:

indicating the scheduling request, the buffer status report, or the combination thereof for the second communication protocol using resource selection for transmitting the data for the first communication protocol.

22. The method of claim 1, wherein:

the first communication protocol comprises an ultra-reliable low-latency communication protocol; and

the second communication protocol comprises an enhanced mobile broadband protocol.

23. An apparatus for wireless communications, comprising:

a processor;

memory coupled with the processor; and

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

identify a first set of resources for a first transmission using a first communication protocol;

identify an overlap in time between the first set of resources and a second set of resources for a second transmission using a second communication protocol, wherein the first communication protocol is associated with a lower latency than the second communication protocol;

process the first transmission and the second transmission based at least in part on the overlap; and

transmit the first transmission based at least in part on the processing.

24. The apparatus of claim 23, wherein the instructions to process the first transmission and the second transmission are further executable by the processor to cause the apparatus to:

refrain from transmitting the second transmission in the second set of resources based at least in part on the overlap, wherein the first transmission is transmitted in the first set of resources.

25. The apparatus of claim 23, wherein the instructions to process the first transmission and the second transmission are further executable by the processor to cause the apparatus to:

rate match the second transmission around the first set of resources for the first transmission based at least in part on the overlap; and

transmit the second transmission based at least in part on the rate matching, wherein the first transmission is transmitted in the first resource and the second transmission is transmitted on a subset of the second set of resources distinct in time from the first set of resources.

26. The apparatus of claim 23, wherein the instructions to process the first transmission and the second transmission are further executable by the processor to cause the apparatus to:

allocate a first transmit power for the first transmission using the first communication protocol based at least in part on a block error rate target;

determine a second transmit power for the second transmission using the second communication protocol based at least in part on the allocated first transmit power and a maximum transmit power; and

transmit the second transmission concurrently with at least a portion of the transmitting the first transmission based at least in part on the overlap.

27. The apparatus of claim 23, wherein the second set of resources comprises a plurality of frequency hopped resources and the instructions to transmit the first transmission are further executable by the processor to cause the apparatus to:

transmit redundant coded bits of uplink control information for the first communication protocol in each frequency hopped resource of the plurality of frequency hopped resources, wherein data for the first communication protocol in each frequency hopped resource of the plurality of frequency hopped resources is self-decodable based at least in part on the respective redundant coded bits of uplink control information

28. The apparatus of claim 23, wherein the second set of resources comprises a plurality of frequency hopped resources and the instructions to process the first transmission and the second transmission are further executable by the processor to cause the apparatus to:

map coded bits of uplink control information associated with the first communication protocol, coded bits of data associated with the first communication protocol, or a combination thereof to a first frequency hopped resource of the plurality of frequency hopped resources.

29. An apparatus for wireless communications, comprising:

means for identifying a first set of resources for a first transmission using a first communication protocol;

means for identifying an overlap in time between the first set of resources and a second set of resources for a second transmission using a second communication protocol, wherein the first communication protocol is associated with a lower latency than the second communication protocol;

means for processing the first transmission and the second transmission based at least in part on the overlap; and

means for transmitting the first transmission based at least in part on the processing.

30. A non-transitory computer-readable medium storing code for wireless communications, the code comprising instructions executable by a processor to:

identify a first set of resources for a first transmission using a first communication protocol;

identify an overlap in time between the first set of resources and a second set of resources for a second transmission using a second communication protocol, wherein the first communication protocol is associated with a lower latency than the second communication protocol;

process the first transmission and the second transmission based at least in part on the overlap; and

transmit the first transmission based at least in part on the processing.