TECHNIQUES FOR MANAGING UPLINK TRANSMISSIONS IN A SHARED RADIO FREQUENCY SPECTRUM BAND AND A DEDICATED RADIO FREQUENCY SPECTRUM BAND

• US 20170048857A1
• Filed: 06/30/2016
• Published: 02/16/2017
• Est. Priority Date: 08/10/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Vajapeyam, Madhavan Srinivasan, Jain, Vikas, Somasundaram, Kiran Kumar, Damnjanovic, Aleksandar, Chen, Fang
• Granted Patent: US 10,701,692 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04J 11/00 Orthogonal multiplex systems, e.g. using WALSH codesH04J13/00 takes precedence
• CPC Class Codes: H04L 2101/622 Layer-2 addresses, e.g. medium access control [MAC] addresses
• CPC Class Codes: H04L 5/0055 Physical resource allocation for ACK/NACK for physical mapping arrangements in ARQ protocols H04L1/1861
• CPC Class Codes: H04W 28/0268 using specific QoS parameters for wireless networks, e.g. QoS class identifier [QCI] or guaranteed bit rate [GBR] negotiating SLA or negotiating QoS H04W28/24
• CPC Class Codes: H04W 28/0273 adapting protocols for flow control or congestion control to wireless environment, e.g. adapting transmission control protocol [TCP] wireless network protocols or protocol adaptations to wireless operation, e.g. wireless application protocol H04W80/00
• CPC Class Codes: H04W 28/0278 using buffer status reports dynamic wireless traffic scheduling definition H04W72/12
• CPC Class Codes: H04W 72/0453 Resources in frequency domain, e.g. a carrier in FDMA
• CPC Class Codes: H04W 72/21 in the uplink direction of a wireless link, i.e. towards the network
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/569 of the traffic information
• CPC Class Codes: H04W 8/082 for traffic bypassing of mobility servers, e.g. location registers, home PLMNs or home agents
• CPC Class Codes: H04W 84/12 WLAN [Wireless Local Area Networks]
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

Techniques are described for wireless communication. One method includes identifying a priority parameter associated with data to be transmitted on an uplink carrier; selecting, based at least in part on the identified priority parameter, between a first type of message for requesting uplink resources in a shared radio frequency spectrum band or a dedicated radio frequency spectrum band, or a second type of message for requesting uplink resources in the dedicated radio frequency spectrum band; and transmitting the selected type of message.

Claims

1. A method for wireless communication at a user equipment (UE), comprising:

identifying a priority parameter associated with data to be transmitted on an uplink carrier;

selecting, based at least in part on the identified priority parameter, between a first type of message for requesting uplink resources in a shared radio frequency spectrum band or a dedicated radio frequency spectrum band, or a second type of message for requesting uplink resources in the dedicated radio frequency spectrum band; and

transmitting the selected type of message.

2. The method of claim 1 wherein identifying the priority parameter comprises:

identifying a first amount of data to be reported in a buffer status report (BSR) message for transmission on the uplink carrier;

determining whether the first amount of data requires uplink resources in the shared radio frequency spectrum band or the dedicated radio frequency spectrum band;

selecting between a first type of BSR message or a second type of BSR message; and

transmitting either the first type of BSR message or the second type of BSR message.

3. The method of claim 2, wherein the first type of BSR message includes data associated with determining whether the first amount of data requires uplink resources.

4. The method of claim 2, wherein data associated with determining whether the first amount of data requires uplink resources is absent from the second type of BSR message.

5. The method of claim 1, wherein the first type of message comprises a first type of scheduling request, and the second type of message comprises a second type of scheduling request.

6. The method of claim 5, further comprising:

receiving, from a base station, a first configuration of a first physical resource on which to transmit the first type of scheduling request, and a second configuration of a second physical resource on which to transmit the second type of scheduling request.

7. The method of claim 6, wherein the first physical resource and the second physical resource comprise distinct time resources, frequency resources, and code resources of a physical uplink control channel (PUCCH).

8. The method of claim 6, wherein the first physical resource is in the shared radio frequency spectrum band and the second physical resource is in the dedicated radio frequency spectrum band.

9. The method of claim 5, further comprising:

receiving, from a base station, an indication of a time domain multiplexing configuration for transmitting the first type of scheduling request or the second type of scheduling request on a physical resource.

10. The method of claim 9, wherein the physical resource is in the dedicated radio frequency spectrum band.

11. The method of claim 1, wherein the first type of message comprises a first type of indication of buffered data to be transmitted on an uplink carrier in the shared radio frequency spectrum band or the dedicated radio frequency spectrum band, and the second type of message comprises a second type of indication of buffered data to be transmitted on an uplink carrier in the dedicated radio frequency spectrum band.

12. The method of claim 11, wherein the first type of indication and the second type of indication are transmitted in a buffer status report (BSR).

13. The method of claim 12, wherein the BSR is transmitted in the dedicated radio frequency spectrum band.

14. The method of claim 11, wherein the first type of indication is transmitted in a first buffer status report (BSR), and wherein the second type of indication is transmitted in a second BSR.

15. The method of claim 14, wherein the first BSR and the second BSR are transmitted in the dedicated radio frequency spectrum band.

16. The method of claim 11, wherein the data to be transmitted on the uplink carrier is associated with a logical channel group, and the first type of indication or the second type of indication are transmitted for the logical channel group.

17. The method of claim 11, further comprising:

reclassifying, upon expiration of a timer, at least one of;

buffered data to be transmitted on an uplink carrier in the dedicated radio frequency spectrum band as buffered data to be transmitted on an uplink carrier in the shared radio frequency spectrum band, or buffered data to be transmitted on an uplink carrier in the shared radio frequency spectrum band as buffered data to be transmitted on an uplink carrier in the dedicated radio frequency spectrum band.

18. The method of claim 1, wherein the priority parameter comprises at least one of:

a quality of service (QoS) parameter, a first indication of whether the data comprises Medium Access Control (MAC) layer control information, a second indication of whether the data comprises upper layer control information, a third indication that the data comprises a Transmission Control Protocol (TCP) acknowledgement (ACK), a fourth indication that the data is for a high priority logical channel, or a fifth indication that the data is for an upper layer retransmission.

19. An apparatus for wireless communication at a user equipment (UE), comprising:

a processor;

memory in electronic communication with the processor; and

the processor and memory configured to;

identify a priority parameter associated with data to be transmitted on an uplink carrier;

select, based at least in part on the identified priority parameter, between a first type of message for requesting uplink resources in a shared radio frequency spectrum band or a dedicated radio frequency spectrum band, or a second type of message for requesting uplink resources in the dedicated radio frequency spectrum band; and

transmit the selected type of message.

20. The apparatus of claim 19, wherein the first type of message comprises a first type of scheduling request, and the second type of message comprises a second type of scheduling request.

21. The apparatus of claim 20, wherein the processor and memory are configured to:

receive, from a base station, a first configuration of a first physical resource on which to transmit the first type of scheduling request, and a second configuration of a second physical resource on which to transmit the second type of scheduling request.

22. The apparatus of claim 21, wherein the first physical resource and the second physical resource comprise distinct time resources, frequency resources, and code resources of a physical uplink control channel (PUCCH).

23. The apparatus of claim 21, wherein the first physical resource is in the shared radio frequency spectrum band and the second physical resource is in the dedicated radio frequency spectrum band.

24. The apparatus of claim 20, wherein the processor and memory are configured to:

receive, from a base station, an indication of a time domain multiplexing configuration for transmitting the first type of scheduling request or the second type of scheduling request on a physical resource.

25. The apparatus of claim 24, wherein the physical resource is in the dedicated radio frequency spectrum band.

26. The apparatus of claim 19, wherein the first type of message comprises a first type of indication of buffered data to be transmitted on an uplink carrier in the shared radio frequency spectrum band or the dedicated radio frequency spectrum band, and the second type of message comprises a second type of indication of buffered data to be transmitted on an uplink carrier in the dedicated radio frequency spectrum band.

27. The apparatus of claim 26, wherein the first type of indication and the second type of indication are transmitted in a buffer status report (BSR).

28. The apparatus of claim 27, wherein the first BSR and the second BSR are transmitted in the dedicated radio frequency spectrum band.

29. A method for wireless communication at a user equipment (UE), comprising:

maintaining a first prioritized bit rate (PBR) and a second PBR for each of one or more logical channels, the first PBR associated with transmissions in a shared radio frequency spectrum band and a dedicated radio frequency spectrum band, and the second PBR associated with transmissions in the dedicated radio frequency spectrum band; and

mapping at least a portion of data associated with a logical channel of the one or more logical channels to resources of one or more uplink grants according to the first PBR for the logical channel and the second PBR for the logical channel.

30. A method for wireless communication at a user equipment (UE), comprising:

communicating on a first uplink carrier in a dedicated radio frequency spectrum band and a second uplink carrier in a shared radio frequency spectrum band;

maintaining a prioritized bit rate (PBR) for each of a plurality of logical channels to determine a nominal scheduling priority of the plurality of logical channels;

receiving an uplink grant for the first uplink carrier in the dedicated radio frequency spectrum band; and

mapping at least a portion of data associated with a logical channel of the plurality of logical channels to resources of the uplink grant according to a logical channel priority applied independently of the nominal scheduling priority.