CHANNEL RESERVATION TECHNIQUES FOR MILLIMETER WAVE SYSTEMS

• US 20180279156A1
• Filed: 03/07/2018
• Published: 09/27/2018
• Est. Priority Date: 03/22/2017
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Malik, Rahul, Kadous, Tamer
• Granted Patent: US 10,555,203 B2
• Time in Patent Office: Days
• CPC Class Codes: H04B 7/0617 for beam forming
• CPC Class Codes: H04B 7/0619 using feedback from receiving side feedback signaling for adaptive modulation/coding H04L1/0001
• CPC Class Codes: H04B 7/063 Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection
• CPC Class Codes: H04B 7/15592 Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path cooperative diversity H04B7/024
• CPC Class Codes: H04W 28/0205 at the air interface dynamic wireless traffic scheduling H04W72/12
• CPC Class Codes: H04W 28/26 Resource reservation
• CPC Class Codes: H04W 72/121 for groups of terminals or users
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal
• CPC Class Codes: H04W 72/542 using measured or perceived quality
• CPC Class Codes: H04W 74/002 Transmission of channel access control information
• CPC Class Codes: H04W 74/006 in the downlink, i.e. towards the terminal
• CPC Class Codes: H04W 74/0816 with collision avoidance
• CPC Class Codes: H04W 84/047 using dedicated repeater stations

Abstract

Methods, systems, and devices for wireless communication are described. A first device may receive a channel reservation request from a second device, over a shared or unlicensed radio frequency spectrum band, the channel reservation request including a first expected response time duration to receive a channel reservation response in response to the channel reservation request. The first wireless device may transmit a channel reservation response in response, and receive a directional transmission according to the channel reservation request. The second device may transmit a directional channel reservation request on a transmit beam, the directional channel reservation request including a first expected response time duration to receive a channel reservation response the first device in response to the directional channel reservation request. The second device may receive the channel reservation response during the first expected response time duration and transmit a directional transmission according to the directional channel reservation request.

Claims

1. A method for wireless communication at a first wireless device, comprising:

transmitting, to a second wireless device, a directional channel reservation request on a transmit beam over a shared radio frequency spectrum band, the directional channel reservation request including a first expected response time duration for the first wireless device to receive a channel reservation response from the second wireless device in response to the directional channel reservation request;

receiving the channel reservation response from the second wireless device during the first expected response time duration; and

transmitting, to the second wireless device, a directional transmission according to the directional channel reservation request.

2. The method of claim 1, wherein the directional channel reservation request further comprises:

a second duration indicating an expected time for the first wireless device to receive an acknowledgement in response to the directional transmission.

3. The method of claim 1, further comprising:

transmitting, by the first wireless device, a second channel reservation request following the directional transmission, the second channel reservation request including a second expected response time duration for the first wireless device to receive an acknowledgement in response to the directional transmission.

4. The method of claim 1, further comprising:

transmitting an omnidirectional channel reservation request over the shared radio frequency spectrum band, the omnidirectional channel reservation request comprising a second expected response time duration for the first wireless device to receive the channel reservation response from the second wireless device in response to the directional channel reservation request.

5. The method of claim 4, wherein the directional channel reservation request is transmitted prior to the omnidirectional channel reservation request, and the first expected response time duration is longer than the second expected response time duration.

6. The method of claim 4, wherein the omnidirectional channel reservation request is transmitted prior to the directional channel reservation request, and the second expected response time duration is longer than the first expected response time duration.

7. The method of claim 1, wherein receiving the channel reservation response comprises:

receiving the channel reservation response from the second wireless device on a receive beam over the shared radio frequency spectrum band.

8. The method of claim 1, further comprising:

transmitting the directional transmission to the second wireless device on a transmit beam over the shared radio frequency spectrum band.

9. The method of claim 1, further comprising:

receiving, on a receive beam over the shared radio frequency spectrum band, an acknowledgement in response to the directional transmission.

10. The method of claim 1, further comprising:

performing a contention-based protocol prior to transmitting the directional channel reservation request over the shared radio frequency spectrum band.

11. The method of claim 1, wherein the first expected response time duration for the first wireless device to receive the channel reservation response from the second wireless device comprises a time duration for the first wireless device to receive a directional channel reservation response from the second wireless device, or a time duration for the first wireless device to receive an omnidirectional channel reservation response from the second wireless device, or a combination thereof.

12. The method of claim 1, wherein the directional transmission is transmitted using a different transmit beam than the transmit beam of the directional channel reservation request.

13. A method for wireless communication, comprising:

receiving a channel reservation request from a second wireless device over a shared radio frequency spectrum band, the channel reservation request including a first expected response time duration for the second wireless device to receive a channel reservation response in response to the channel reservation request;

transmitting, during the first expected response time duration, the channel reservation response in response to the received channel reservation request; and

receiving, from the second wireless device, a directional transmission according to the channel reservation request.

14. The method of claim 13, wherein transmitting the channel reservation response comprises:

transmitting, during the first expected response time duration, an omnidirectional channel reservation response in response to the received channel reservation request; and

transmitting, during the first expected response time duration, a directional channel reservation response in response to the received channel reservation request.

15. The method of claim 14, wherein transmitting the directional channel reservation response comprises:

transmitting the directional channel reservation response to the second wireless device on a transmit beam over the shared radio frequency spectrum band.

16. The method of claim 14, wherein transmitting the directional channel reservation response comprises:

transmitting the directional channel reservation response to the second wireless device, the second wireless device to receive the directional channel reservation response on a receive beam over the shared radio frequency spectrum band.

17. The method of claim 14, wherein:

the omnidirectional channel reservation response comprises a second expected response time duration for the directional transmission to be received and an acknowledgement to be transmitted; and

the directional channel reservation response comprises a third expected response time duration for the directional transmission to be received and the acknowledgement to be transmitted.

18. The method of claim 13, wherein transmitting the channel reservation response further comprises:

transmitting, during the first expected response time duration, a first directional channel reservation response in response to the received channel reservation request; and

transmitting, during the first expected response time duration, a second directional channel reservation response in response to the received channel reservation request, wherein the first directional channel reservation response and the second directional channel reservation response are directed to different wireless devices.

19. The method of claim 13, further comprising:

receiving, in the channel reservation request, a second expected response time duration for the second wireless device to receive an acknowledgement in response to the directional transmission; and

transmitting, to the second wireless device during the second expected response time duration, the acknowledgement in response to the directional transmission.

20. The method of claim 13, further comprising:

receiving, from the second wireless device, a second channel reservation response, the second channel reservation response including a second expected response time duration for the second wireless device to receive an acknowledgement in response to the directional transmission; and

transmitting, to the second wireless device during the second expected response time duration, the acknowledgement in response to the directional transmission.

21. The method of claim 13, further comprising:

receiving the directional transmission from the second wireless device on a receive beam over the shared radio frequency spectrum band.

22. The method of claim 13, wherein transmitting the channel reservation response comprises:

transmitting a first directional channel reservation response on a first transmit beam to an expected location of the second wireless device; and

transmitting a second directional channel reservation response on a second transmit beam to an expected location of a third wireless device.

23. The method of claim 13, further comprising:

transmitting, on a transmit beam over the shared radio frequency spectrum band, an acknowledgement in response to the received directional transmission.

24. An apparatus for wireless communication at a first wireless device, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the first wireless device to;

transmit, to a second wireless device, a directional channel reservation request on a transmit beam over a shared radio frequency spectrum band, the directional channel reservation request including a first expected response time duration for the first wireless device to receive a channel reservation response from the second wireless device in response to the directional channel reservation request;

receive the channel reservation response from the second wireless device during the first expected response time duration; and

transmit, to the second wireless device, a directional transmission according to the directional channel reservation request.

25. The apparatus of claim 24, wherein the directional channel reservation request further comprises:

a second duration indicating an expected time for the first wireless device to receive an acknowledgement in response to the directional transmission.

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

transmit, by the first wireless device, a second channel reservation request following the directional transmission, the second channel reservation request including a second expected response time duration for the first wireless device to receive an acknowledgement in response to the directional transmission.

27. The apparatus of claim 24, wherein the first expected response time duration includes a time duration for the first wireless device to receive a directional channel reservation response from the second wireless device, or a time duration for the first wireless device to receive an omnidirectional channel reservation response from the second wireless device, or a combination thereof.

28. An apparatus for wireless communication at a first wireless device, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory and operable, when executed by the processor, to cause the first wireless device to;

receive a channel reservation request from a second wireless device over a shared radio frequency spectrum band, the channel reservation request including a first expected response time duration for the second wireless device to receive a channel reservation response in response to the channel reservation request;

transmit, during the first expected response time duration, the channel reservation response in response to the received channel reservation request; and

receive, from the second wireless device, a directional transmission according to the channel reservation request.

29. The apparatus of claim 28, wherein transmitting the channel reservation response comprises:

transmitting, during the first expected response time duration, an omnidirectional channel reservation response in response to the received channel reservation request; and

transmitting, during the first expected response time duration, a directional channel reservation response in response to the received channel reservation request.

30. The apparatus of claim 29, wherein transmitting the directional channel reservation response comprises:

transmitting the directional channel reservation response to the second wireless device on a transmit beam over the shared radio frequency spectrum band.