Methods, apparatuses directed to enabling tone reservations in wireless systems

Patent metadata

Field	Value
Publication number	US-12580799-B2
Application number	US-202118031692-A
Country	US
Kind code	B2
Filing date	Oct 13, 2021
Priority date	Oct 14, 2020
Publication date	Mar 17, 2026
Grant date	Mar 17, 2026

Abstract

Methods, apparatuses, systems, etc., directed to performing a change of relay are disclosed herein. In an embodiment, a wireless transmit/receive unit (WTRU) may transmit an information for requesting a peak reduction tone (PRT) configuration for reducing a peak to average power ratio (PAPR). In an embodiment, the WTRU may receive an indication of frequency resources to be used for transmitting a PRT signal based on the PRT configuration. In an embodiment, the WTRU may transmit the PRT signal in the frequency resources in addition to an uplink (UL) transmission, wherein the frequency resources for the PRT signal may be allocated based on a set of frequency resources allocated to the UL transmission.

First claim

What is claimed is:

1 . A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
determining that a power condition is satisfied; selecting a requested tone reservation (TR) configuration from a set of TR configurations based on the power condition being satisfied; transmitting first information indicating the requested TR configuration; receiving second information indicating the requested TR configuration or a different TR configuration of the set of TR configurations; and performing a transmission according to the requested TR configuration or the different TR configuration indicated in the received second information, wherein the performing of the transmission includes: selecting a first set of resources for data transmission and a second set of resources adjacent to the first set of resources for a first tone reservation; and selecting a first transmit power for the first set of resources that is greater than a second transmit power for the second set of resources such that the data transmission is transmitted on the first set of resources at a power higher than a maximum power level.

2 . The method of claim 1 , further comprising receiving uplink grant information indicating any of (1) a resource block (RB) allocation and (2) a modulation and coding scheme (MCS), wherein the requested TR configuration is selected in accordance with any of the RB allocation and the MCS.

3 . The method of claim 1 , wherein the first information indicating the requested TR configuration is transmitted in any of a medium access control (MAC) control element, uplink control information (UCI) and a radio resource control (RRC) message.

4 . The method of claim 1 , further comprising multiplexing the first information indicating the requested TR configuration with UCI on a physical uplink control channel (PUCCH), wherein the UCI comprises any of scheduling request (SR) information, hybrid automatic repeat request acknowledge (HARQ-ACK) feedback information and channel state information (CSI).

5 . The method of claim 1 , further comprising multiplexing the first information indicating the requested TR configuration with UCI on a physical uplink shared channel (PUSCH).

6 . The method of claim 1 , further comprising determining the second set of resources according to the requested TR configuration or the different TR configuration indicated in the received second information.

7 . The method of claim 1 , further comprising determining the second transmit power based on the first transmit power and on a power offset associated with the requested TR configuration or the different TR configuration indicated in the received second information.

8 . The method of claim 7 , wherein the second information indicates any of (1) a number of RBs reserved for TR, (2) the power offset between the first transmit power and the second transmit power, (3) a location of the reserved RBs associated with any of a bandwidth part (BWP) and a carrier component (CC), (4) any of at least one subframe and at least one slot where the requested TR configuration or the different TR configuration applies, (5) any of a periodicity and an offset when the requested TR configuration or the different TR configuration applies, (6) a subcarrier spacing, (7) any of a BWP index and a CC index, (8) a method to generate the TR, (9) a density indication indicating whether the TR is contiguous or noncontiguous with the data, (10) a transmit power control step size, and (11) a precoder ratio.

9 . The method of claim 1 , further comprising receiving TR configuration information indicating the set of TR configurations.

10 . The method of claim 1 , wherein the power condition is satisfied in a case when a power headroom is less than a threshold, and wherein the requested TR configuration is selected in accordance with the power headroom.

11 . The method of claim 1 , wherein the power condition is satisfied in a case when a reference signal received power is less than a threshold.

12 . The method of claim 1 , wherein the power condition is satisfied in a case when a maximum power has been used for transmitting over a period of time, and wherein the requested TR configuration is selected in accordance with the maximum power used over the period of time.

13 . A wireless transmit/receive unit (WTRU) comprising circuitry, including any of a transmitter, a receiver, a processor and a memory, the WTRU being configured to:
determine that a power condition is satisfied; select a requested tone reservation (TR) configuration from a set of TR configurations based on the power condition being satisfied; transmit first information indicating the requested TR configuration; receive second information indicating the requested TR configuration or a different TR configuration of the set of TR configurations; and perform a transmission according to the requested TR configuration or the different TR configuration indicated in the received second information, wherein being configured to perform the transmission comprises being configured to: select a first set of resources for data transmission and a second set of resources adjacent to the first set of resources for a first tone reservation; and select a first transmit power for the first set of resources that is greater than a second transmit power for the second set of resources such that the data transmission is transmitted on the first set of resources at a power higher than a maximum power level.

14 . The WTRU of claim 13 , wherein the WTRU is further configured to determine the second set of resources according to the requested TR configuration or the different TR configuration indicated in the received second information.

15 . The WTRU of claim 13 , wherein the WTRU is further configured to determine the second transmit power based on the first transmit power and on a power offset associated with the requested TR configuration or the different TR configuration indicated in the received second information.

16 . The WTRU of claim 13 , wherein the WTRU is further configured to receive TR configuration information indicating the set of TR configurations.

17 . The WTRU of claim 13 , wherein the power condition is satisfied in a case when a power headroom is less than a threshold, and wherein the requested TR configuration is selected in accordance with the power headroom.

18 . The WTRU of claim 13 , wherein the power condition is satisfied in a case when a reference signal received power is less than a threshold.

Assignees

• Interdigital Patent Holdings Inc

Inventors

• El Hamss Aata
• Marinier Paul
• Lee Moon Il
• Stern-Berkowitz Janet
• Comsa Virgil
• Hasegawa Fumihiro

Classifications

• H04W52/365

  Power headroom reporting · CPC title

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04W72/232

  the control data signalling from the physical layer, e.g. DCI signalling · CPC title

• H04L5/0048

  Allocation of pilot signals, i.e. of signals known to the receiver (allocation of control signalling H04L5/0053; use of control signalling H04L5/0091) · CPC title

• H04L5/0053

  Allocation of signalling, i.e. of overhead other than pilot signals · CPC title