FULL DUPLEX SINGLE CHANNEL COMMUNICATIONS

• US 20150229461A1
• Filed: 08/27/2013
• Published: 08/13/2015
• Est. Priority Date: 08/28/2012
• Status: Active Grant

• Current Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Original Assignee: InterDigital Patent Holdings, Inc. (InterDigital, Inc.)
• Inventors: DiFazio, Robert A., Pietraski, Philip J., Yang, Rui, Bala, Erdem, Li, Jialing
• Granted Patent: US 10,567,147 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex

Abstract

Embodiments contemplate TDD systems and techniques where timeslots may be allocated as DL, UL, or FDSC; the base station (BS) may be full duplex singled channel (FDSC) capable; and some, all, or none of the UEs (or WTRUs) may be FDSC capable. In one or more embodiments, FDSC1 timeslots may be contemplated that may be used (in some embodiments perhaps exclusively used) by a pair of radios, for example one BS and one UE, both having FD capability. In one or more embodiments, FDSC timeslots may be shared among a BS with FDSC capability and two or more UEs, that may be half duplex (HD). Embodiments also contemplate various FDD systems and techniques, including full duplex FDD systems and techniques.

Claims

1. A base station, the base station in communication with a first wireless transmit/receive unit (WTRU) and a second WTRU, the base station comprising:

a processor, the processor configured to;

allocate a first timeslot of a first frame of a first communication channel to full duplex single channel (FDSC) communication;

allocate a second timeslot of the first frame of the first communication channel to FDSC communication;

communicate with the first WTRU via FDSC via the first timeslot; and

communicate with the second WTRU via half duplex (HD) communication via the second timeslot.

2. The base station of claim 1, wherein the processor is further configured such that the first timeslot is used exclusively by the base station for communication with the first WTRU.

3. The base station of claim 1, wherein the processor is further configured in to communicate via the second timeslot for at least one of:

uplink (UL) or downlink (DL).

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10. A method performed by a base station, the base station being a node of a wireless communication network and the base station being in communication with one or more wireless transmit/receive units (WTRUs), the method comprising:

determining a transmission-reception coupling respectively corresponding to one or more transmission paths;

determining a reception signal quality from the one or more WTRUs; and

determining which of the one or more WTRUs are capable of full-duplex single channel (FDSC) communication based at least on the transmission-reception coupling and reception signal quality.

11. The method of claim 10, wherein the determining the transmission-reception coupling includes at least one of:

measuring the transmission-reception coupling or estimating the transmission-reception coupling.

12. The method of claim 10, wherein the determining the transmission-reception coupling includes at least one of:

real time measurements, preconfigured values, or stored values.

13. The method of claim 10, wherein the determining the transmission-reception coupling includes determining at least a degree to which a coupling loss of a transmit signal back into a receiver, less a propagation loss, exceeds a signal-to-noise (SNR) threshold.

14. The method of claim 10, wherein the determining the reception signal quality includes at least one of:

measuring the reception signal quality or estimating the reception signal quality.

15. The method of claim 10, further comprising organizing those of the one or more WTRUs that are determined to be capable of FDSC communication, the organizing including organizing identifiers of the WTRUs that are determined to be capable of FDSC communication into at least one of a table or record in a memory.

18. The method of claim 10, further comprising:

determining a number of timeslots to allocate to FDSC communication;

assigning one or more WTRUs to assign to FDSC communication of those of the one or more WTRUs that are determined to be capable of FDSC communication; and

assigning one or more of the number of timeslots allocated to FDSC communication to the one or more WTRUs assigned to FDSC communication.

19. The method of claim 10, further comprising receiving one or more respective inputs from the one or more WTRUs, the one or more respective inputs related to respective determinations of the one or more WTRUs regarding FDSC communication capability.

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32. A wireless transmit/receive unit (WTRU) capable of full duplex single channel communication, the WTRU comprising:

a processor configured to at least;

apply at least one of;

a first preconfigured data to the an antenna interference suppression process, a second preconfigured data to a digital interference suppression process, or a third preconfigured data to an analog interference suppression process, wherein at least one of;

the first preconfigured data, the second preconfigured data, or the third preconfigured data provides an initial level of suppression.

33. The WTRU of claim 32, wherein the processor is further configured to:

apply at least one of;

a digital signal to the digital interference suppression process or an analog signal to the analog interference suppression process, at least one of the digital signal or the analog signal respectively improving the digital interference suppression or the analog interference suppression.

34. The WTRU of claim 33, wherein the processor is further configured to:

apply the analog signal to the antenna interference suppression process, the analog signal further improving the antenna interference suppression.

35. The WTRU of claim 33, wherein the processor is further configured to:

apply an analog signal including a digital pre-distorted signal to the antenna interference suppression process, the analog signal including the digital pre-distorted signal further improving the antenna interference suppression and the pre-distorted signal generated by the digital interference suppression process.

36. The WTRU of claim 32, wherein the processor is further configured to:

apply at least one of;

a digital signal to the digital interference suppression process or an analog signal including a digital pre-distortion signal to the analog interference suppression process, at least one of the digital signal or the analog signal including the digital pre-distortion signal respectively improving the digital interference suppression or the analog interference suppression.

37. The WTRU of claim 36, wherein the processor is further configured to:

apply an analog pre-distortion to the analog signal including the digital pre-distortion signal prior to the application of the analog signal including the digital pre-distortion signal to the analog interference suppression process.

38. The WTRU of claim 36, wherein the processor is further configured to:

apply a signal representative of an inverse of a digital pre-distortion process to the analog interference suppression process.

39. The WTRU of claim 38, wherein the processor is further configured to:

apply an analog pre-distortion to the signal representative of an inverse of a digital pre-distortion process prior to the application of the signal representative of an inverse of a digital pre-distortion process to the analog interference suppression process.

40. The WTRU of claim 34, wherein the processor is further configured to:

apply an analog pre-distortion to the analog signal prior to application of the analog signal to the antenna interference suppression process.

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