METHODS AND APPARATUS FOR DYNAMIC TIME-DIVISION DUPLEXING (TDD)

• US 20190081768A1
• Filed: 08/30/2018
• Published: 03/14/2019
• Est. Priority Date: 09/11/2017
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: ZHANG, Xiaoxia, YOO, Taesang, WEI, Yongbin, KADOUS, Tamer Adel
• Granted Patent: US 10,985,897 B2
• Time in Patent Office: Days
• CPC Class Codes: H04J 11/0023 Interference mitigation or co-ordination direct sequence spread spectrum [DSSS] systems H04B1/7097; frequency hopping H04B1/713; allocation criteria for ingress interference avoidance H04L5/0062; frequency allocation criteria for requirements on out-of-channel emissions H04L5/0066; arrangements for removing intersymbol interference or baseband equalisers H04L25/03006; peak power aspects in multicarrier modulation H04L27/2614; power management H04W52/00; traffic scheduling H04W72/54, H04W72/541
• CPC Class Codes: H04L 5/005 of common pilots, i.e. pilots destined for multiple users or terminals
• CPC Class Codes: H04L 5/0051 of dedicated pilots, i.e. pilots destined for a single user or terminal
• CPC Class Codes: H04L 5/0094 Indication of how sub-channels of the path are allocated
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04W 72/20 Control channels or signalling for resource management
• 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 74/0866 using a dedicated channel for access
• CPC Class Codes: H04W 88/02 Terminal devices
• CPC Class Codes: H04W 88/08 Access point devices

Abstract

Wireless communication apparatus and methods related to dynamic TDD are described. In aspects, a method of wireless communication over a shared medium may include, receiving, from a base station, control information in a first portion of a transmission opportunity (TXOP), wherein the control information indicates a configuration for triggering a communication of at least one shared medium reservation signal associated with one or more remaining portions of the TXOP; and in response to receiving the control information in the first portion of the TXOP, monitoring for or transmitting the at least one shared medium reservation signal, based on the configuration.

Claims

1. A method of wireless communication over a shared medium by a user equipment (UE), comprising:

receiving, from a base station, control information in a first portion of a transmission opportunity (TXOP), wherein the control information indicates a configuration for triggering a communication of at least one shared medium reservation signal associated with one or more remaining portions of the TXOP; and

in response to receiving the control information in the first portion of the TXOP, monitoring for or transmitting the at least one shared medium reservation signal, based on the configuration.

2. The method of claim 1, wherein the at least one shared medium reservation signal comprises one shared medium reservation signal associated with the one or more remaining portions of the TXOP.

3. The method of claim 1, wherein the monitoring for or transmitting the at least one shared medium reservation signal comprises monitoring for or transmitting the at least one shared medium reservation signal in a portion of the TXOP subsequent to the first portion.

4. The method of claim 3, further comprising receiving at least one downlink (DL) signal or transmitting at least one uplink (UL) signal in a remaining part of the first portion not occupied by the control information, wherein the DL signal or the UL signal comprises a signal other than a shared medium reservation signal.

5. The method of claim 1, wherein the TXOP comprises a frame, each portion of the TXOP comprises a slot, and the at least one shared medium reservation signal comprises a symbol.

6. The method of claim 1, wherein the one or more remaining portions of the TXOP are subsequent to the first portion.

7. A method of wireless communication over a shared medium by a base station (BS), comprising:

transmitting, to a user equipment (UE), control information in a first portion of a transmission opportunity (TXOP), wherein the control information indicates a configuration for triggering a communication of at least one shared medium reservation signal associated with one or more remaining portions of the TXOP; and

monitoring for or transmitting the at least one shared medium reservation signal, based on the configuration.

8. The method of claim 7, wherein the at least one shared medium reservation signal comprises one shared medium reservation signal associated with the one or more remaining portions of the TXOP.

9. The method of claim 8, wherein the one shared medium reservation signal occupies a different frequency resource for each of the one or more remaining portions of the TXOP.

10. The method of claim 7, wherein the monitoring for or transmitting the at least one shared medium reservation signal comprises monitoring for the at least one shared medium reservation signal or transmitting the at least one shared medium reservation signal in a portion of the TXOP subsequent to the first portion.

11. The method of claim 10, further comprising receiving at least one uplink (UL) signal or transmitting at least one downlink (DL) signal in a remaining part of the first portion not occupied by the control information, wherein the UL signal or the DL signal comprises a signal other than a shared medium reservation signal.

12. The method of claim 7, wherein the TXOP comprises a frame, each portion of the TXOP comprises a slot, and the at least one shared medium reservation signal comprises a symbol.

13. The method of claim 7, wherein the one or more remaining portions of the TXOP are subsequent to the first portion.

14. The method of claim 7,

wherein the one or more remaining portions of the TXOP comprise at least one portion with a default downlink (DL) direction, and

wherein the control information indicates a configuration for triggering the UE to:

transmit the at least one shared medium reservation signal for the at least one portion, or monitor for a shared medium reservation signal transmitted from one or more other UEs for the at least one portion.

15. The method of claim 8,

wherein the one or more remaining portions of the TXOP comprise at least one portion with a default uplink (UL) direction,

wherein the transmitting the at least one shared medium reservation signal comprises transmitting the at least one shared medium reservation signal for the at least one portion, and wherein the monitoring for the at least one shared medium reservation signal comprises monitoring for a shared medium reservation signal from one or more other BSs for the at least one portion;

and

wherein the control information indicates a configuration for triggering the UE to;

monitor for a shared medium reservation signal from one or more other UEs for the at least one portion, or transmit the at least one shared medium reservation signal for the at least one portion.

16. An apparatus for wireless communication over a shared medium, comprising:

at least one processor;

memory coupled to the at least one processor; and

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

receive, from a base station, control information in a first portion of a transmission opportunity (TXOP), wherein the control information indicates a configuration for triggering a communication of at least one shared medium reservation signal associated with one or more remaining portions of the TXOP; and

in response to receiving the control information in the first portion of the TXOP, monitor for or transmitting the at least one shared medium reservation signal, based on the configuration.

17. The apparatus of claim 16, wherein the at least one shared medium reservation signal comprises one shared medium reservation signal associated with the one or more remaining portions of the TXOP.

18. The apparatus of claim 16, wherein the monitoring for or transmitting the at least one shared medium reservation signal comprises monitoring for or transmitting the at least one shared medium reservation signal in a portion of the TXOP subsequent to the first portion.

19. The apparatus of claim 18, wherein the instructions are further executable by the at least one processor to cause the apparatus to receive at least one downlink (DL) signal or transmit at least one uplink (UL) signal in a remaining part of the first portion not occupied by the control information, wherein the DL signal or the UL signal comprises a signal other than a shared medium reservation signal.

20. The apparatus of claim 16, wherein the TXOP comprises a frame, each portion of the TXOP comprises a slot, and the at least one shared medium reservation signal comprises a symbol.

21. The apparatus of claim 16, wherein the one or more remaining portions of the TXOP are subsequent to the first portion.

22. An apparatus for wireless communication over a shared medium, comprising:

at least one processor;

memory coupled to the at least one processor; and

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

transmit, to a user equipment (UE), control information in a first portion of a transmission opportunity (TXOP), wherein the control information indicates a configuration for triggering a communication of at least one shared medium reservation signal associated with one or more remaining portions of the TXOP; and

monitor for or transmitting the at least one shared medium reservation signal, based on the configuration.

23. The apparatus of claim 22, wherein the at least one shared medium reservation signal comprises one shared medium reservation signal associated with the one or more remaining portions of the TXOP.

24. The apparatus of claim 23, wherein the one shared medium reservation signal occupies a different frequency resource for each of the one or more remaining portions of the TXOP.

25. The apparatus of claim 22, wherein the monitoring for or transmitting the at least one shared medium reservation signal comprises monitoring for the at least one shared medium reservation signal or transmitting the at least one shared medium reservation signal in a portion of the TXOP subsequent to the first portion.

26. The apparatus of claim 25, wherein the instructions are further executable by the at least one processor to cause the apparatus to receive at least one uplink (UL) signal or transmit at least one downlink (DL) signal in a remaining part of the first portion not occupied by the control information, wherein the UL signal or the DL signal comprises a signal other than a shared medium reservation signal.

27. The apparatus of claim 22, wherein the TXOP comprises a frame, each portion of the TXOP comprises a slot, and the at least one shared medium reservation signal comprises a symbol.

28. The apparatus of claim 22, wherein the one or more remaining portions of the TXOP are subsequent to the first portion.

29. The apparatus of claim 22,

wherein the one or more remaining portions of the TXOP comprise at least one portion with a default downlink (DL) direction, and

wherein the control information indicates a configuration for triggering the UE to:

transmit the at least one shared medium reservation signal for the at least one portion, or monitor for a shared medium reservation signal transmitted from one or more other UEs for the at least one portion.

30. The apparatus of claim 22,

wherein the one or more remaining portions of the TXOP comprise at least one portion with a default uplink (UL) direction,

wherein the transmitting the at least one shared medium reservation signal comprises transmitting the at least one shared medium reservation signal for the at least one portion, and wherein the monitoring for the at least one shared medium reservation signal comprises monitoring for a shared medium reservation signal from one or more other BSs for the at least one portion;

and

wherein the control information indicates a configuration for triggering the UE to;

monitor for a shared medium reservation signal from one or more other UEs for the at least one portion, or transmit the at least one shared medium reservation signal for the at least one portion.