CN-122003830-A - Techniques for tone reservation based on estimated downlink channel response

Abstract

Methods, systems, and devices for wireless communications are described. A User Equipment (UE) may receive a configuration signal indicating that a tone reservation is activated on a first set of resource elements of a downlink transmission to reduce out-of-band transmission, wherein a second set of resource elements of the downlink transmission is reserved for data transmission. The UE may then receive a downlink transmission from the network entity, the downlink transmission including the first set of resource elements and the second set of resource elements. After receiving the downlink transmission, the UE may decode the downlink transmission according to the configuration signal.

Inventors

• S. Landis
• A. Ba O Tillinger
• HORNE IRENE MARY
• Y. Dalal
• G.S. Kurtz

Assignees

• 高通股份有限公司

Dates

Publication Date

20260508

Application Date

20241001

Priority Date

20231018

Claims (20)

1. 1. A User Equipment (UE), the UE comprising: One or more of the memories may be provided, the one or more memories store processor executable code; and One or more processors coupled with the one or more memories and operable, individually or collectively, to execute the code to cause the UE to: Receiving a configuration signal indicating that a tone reservation is activated on a first plurality of resource elements of a downlink transmission, wherein a second plurality of resource elements of the downlink transmission are reserved for data transmission; receiving the downlink transmission from a network entity, the downlink transmission comprising the first plurality of resource elements and the second plurality of resource elements, and And decoding the downlink transmission according to the configuration signal.
2. 2. The UE of claim 1, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the UE to: estimating a downlink channel response based at least in part on receiving the configuration signal, and One or more locations of the first plurality of resource elements are determined based at least in part on estimating the downlink channel response, wherein the first plurality of resource elements are associated with a lower energy level than the second plurality of resource elements.
3. 3. The UE of claim 1, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the UE to: A rate matching process is performed based at least in part on discarding the first plurality of resource elements from data contained in the downlink transmission, wherein decoding the downlink transmission is based at least in part on performing the rate matching process.
4. 4. The UE of claim 1, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the UE to: Modifying one or more log likelihood ratio values associated with the first plurality of resource elements, wherein decoding the downlink transmission is based at least in part on modifying the one or more log likelihood ratio values.
5. 5. The UE of claim 1, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the UE to: receiving a control signal indicating a weighted overlap-add technique and indicating the use of a short cyclic prefix in the downlink transmission, and A cyclic prefix removal procedure on the downlink transmission is adjusted based at least in part on determining to use the short cyclic prefix in the downlink transmission.
6. 6. The UE of claim 1, wherein: The configuration signal includes at least one of a radio resource control signal, a downlink control information signal, a Medium Access Control (MAC) layer control element, or a combination thereof.
7. 7. The UE of claim 1, wherein the configuration signal indicates a mode associated with the first plurality of resource elements.
8. 8. The UE of claim 1, wherein the configuration signal indicates a rule for selecting resource elements according to channel conditions, and wherein determining that tone reservations are activated on the first plurality of resource elements is based at least in part on the rule.
9. 9. A network entity, the network entity comprising: One or more of the memories may be provided, the one or more memories store processor executable code; and One or more processors coupled with the one or more memories and operable, individually or collectively, to execute the code to cause the network entity to: Transmitting a configuration signal indicating that a tone reservation is activated on a first plurality of resource elements of a downlink transmission, wherein a second plurality of resource elements of the downlink transmission are reserved for data transmission; applying the tone reservation on the downlink transmission according to the configuration signal, and The method includes transmitting, to a User Equipment (UE), the downlink transmission including the first plurality of resource elements and the second plurality of resource elements based at least in part on applying the tone reservation.
10. 10. The network entity of claim 9, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the network entity to: estimating a downlink channel based at least in part on receiving one or more sounding reference signals, and Whether to apply the tone reservation or to apply a weighted overlap-add technique is determined based at least in part on one or more of channel conditions, signal-to-noise ratio of the UE, delay spread reporting, or a combination thereof.
11. 11. The network entity of claim 9, wherein the one or more processors are further operable, individually or collectively, to execute the code to cause the network entity to: A control signal is transmitted that indicates a weighted overlap-add technique and indicates the use of a short cyclic prefix in the downlink transmission.
12. 12. The network entity of claim 9, wherein to send the configuration signal, the one or more processors are further operable, individually or collectively, to execute the code to cause the network entity to: a report is sent, the report including one or more locations and values of the first plurality of resource elements.
13. 13. The network entity of claim 9, wherein: The configuration signal includes at least one of a radio resource control signal, a downlink control information signal, a Medium Access Control (MAC) layer control element, or a combination thereof.
14. 14. The network entity of claim 9, wherein the configuration signal indicates a pattern associated with the first plurality of resource elements.
15. 15. The network entity of claim 9, wherein the configuration signal indicates a rule for selecting resource elements according to channel conditions, and wherein determining that tone reservations are activated on the first plurality of resource elements is based at least in part on the rule.
16. 16. A method for wireless communication at a User Equipment (UE), the method comprising: Receiving a configuration signal indicating that a tone reservation is activated on a first plurality of resource elements of a downlink transmission, wherein a second plurality of resource elements of the downlink transmission are reserved for data transmission; receiving the downlink transmission from a network entity, the downlink transmission comprising the first plurality of resource elements and the second plurality of resource elements, and And decoding the downlink transmission according to the configuration signal.
17. 17. The method of claim 16, the method further comprising: estimating a downlink channel response based at least in part on receiving the configuration signal, and One or more locations of the first plurality of resource elements are determined based at least in part on estimating the downlink channel response, wherein the first plurality of resource elements are associated with a lower energy level than the second plurality of resource elements.
18. 18. The method of claim 16, the method further comprising: A rate matching process is performed based at least in part on discarding the first plurality of resource elements from data contained in the downlink transmission, wherein decoding the downlink transmission is based at least in part on performing the rate matching process.
19. 19. The method of claim 16, the method further comprising: Modifying one or more log likelihood ratio values associated with the first plurality of resource elements, wherein decoding the downlink transmission is based at least in part on modifying the one or more log likelihood ratio values.
20. 20. The method of claim 16, the method further comprising: receiving a control signal indicating a weighted overlap-add technique and indicating the use of a short cyclic prefix in the downlink transmission, and A cyclic prefix removal procedure on the downlink transmission is adjusted based at least in part on determining to use the short cyclic prefix in the downlink transmission.

Description

Techniques for tone reservation based on estimated downlink channel response Cross reference This patent application claims the benefit of U.S. patent application Ser. No. 18/489,739, entitled "TECHNIQUES FOR CHANNEL ORIENTED TONE RESERVATION (technique for channel-oriented tone reservation)" filed by LANDIS et al at 10/18 of 2023, which is assigned to the assignee of the present application and expressly incorporated herein by reference. Technical Field The following relates to a method for wireless communication, including techniques for channel-oriented tone reservation. Background Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be able to support communication with multiple users by sharing the available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth generation (4G) systems, such as Long Term Evolution (LTE) systems, LTE-advanced (LTE-a) systems, or LTE-a Pro systems, and fifth generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems may employ techniques such as Code Division Multiple Access (CDMA), time Division Multiple Access (TDMA), frequency Division Multiple Access (FDMA), orthogonal FDMA (OFDMA), or discrete fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple-access communication system may include one or more base stations, each supporting wireless communication for communication devices, which may be referred to as User Equipment (UEs). Disclosure of Invention The described technology relates to improved methods, systems, devices, and apparatus supporting techniques for channel-oriented tone reservation. For example, the described techniques support using tone reservation to suppress out-of-band emissions. In downlink transmission, the transmitter may allocate a first set of resource elements for tone reservation signaling and a second set of resource elements for data transmission. The receiver may estimate the location of the resource elements for tone reservation or may receive an indication of the location of the resource elements for tone reservation. Upon receiving the downlink transmission, the receiver may perform a decoding process to reduce out-of-band transmission based on the location of the resource elements identified for tone reservation. A method for wireless communication by a User Equipment (UE) is described. The method may include receiving a configuration signal indicating that a tone reservation is activated on a first plurality of resource elements of a downlink transmission, wherein a second plurality of resource elements of the downlink transmission are reserved for data transmission, receiving the downlink transmission from a network entity, the downlink transmission including the first plurality of resource elements and the second plurality of resource elements, and decoding the downlink transmission according to the configuration signal. A UE for wireless communication is described. The UE may include one or more memories storing processor executable code; and a processor(s) for the one or more processors, the one or more processors are coupled with the one or more memories. The one or more processors may be operable, individually or collectively, to execute the code to cause the UE to receive a configuration signal indicating that a tone reservation is activated on a first plurality of resource elements of a downlink transmission, wherein a second plurality of resource elements of the downlink transmission are reserved for data transmission, receive the downlink transmission from a network entity, the downlink transmission comprising the first plurality of resource elements and the second plurality of resource elements, and decode the downlink transmission according to the configuration signal. Another UE for wireless communication is described. The UE may include means for receiving a configuration signal indicating that a tone reservation is activated on a first plurality of resource elements of a downlink transmission, wherein a second plurality of resource elements of the downlink transmission are reserved for data transmission, means for receiving the downlink transmission from a network entity, the downlink transmission comprising the first plurality of resource elements and the second plurality of resource elements, and means for decoding the downlink transmission according to the configuration signal. A non-transitory computer readable medium storing code for wireless communication is described. The code may include instructions executable by a processor to receive a configuration signal indicating that a tone reservation is activated on a first plurality of resource elements of a downlink transmission, wherein a second plurality of resource elements of the downlink transmission