EP-4736355-A1 - CYCLIC SHIFT OFFSET ALLOCATION FOR FREQUENCY MODULATED CONTINUOUS WAVEFORM REFERENCE SIGNALS

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a first network entity may receive a communication indicating frequency modulated continuous waveform (FMCW) reference signal resource information, the FMCW reference signal resource information indicating a resource allocation and one or more candidate cyclic shift offsets. The first network entity may communicate an FMCW reference signal using the resource allocation and a particular cyclic shift offset from the one or more candidate cyclic shift offsets. Numerous other aspects are described.

Inventors

• HUANG, MIN
• YIN, Mingxi
• XU, HAO

Assignees

• QUALCOMM Incorporated

Dates

Publication Date

20260506

Application Date

20230628

Claims (20)

1. A first network entity for wireless communication, comprising: at least one memory; at least one communication interface; and at least one processor coupled to the at least one memory and the at least one communication interface, wherein the first network entity is configured to: receive a communication indicating frequency modulated continuous waveform (FMCW) reference signal resource information, the FMCW reference signal resource information indicating a resource allocation and one or more candidate cyclic shift offsets; and communicate an FMCW reference signal using the resource allocation and a particular cyclic shift offset from the one or more candidate cyclic shift offsets.
2. The first network entity of claim 1, wherein the resource allocation includes a channel bandwidth, and wherein the first network entity is configured to: communicate one or more data communications via a subband within the channel bandwidth, wherein the subband is based on one or more measurements of the FMCW reference signal.
3. The first network entity of claim 1, wherein the first network entity is configured to: determine the particular cyclic shift offset from the one or more candidate cyclic shift offsets based on measurement information associated with the resource allocation.
4. The first network entity of claim 3, wherein the first network entity is configured to: obtain, based on the resource allocation, the measurement information.
5. The first network entity of claim 3, wherein, to determine the particular cyclic shift offset, the first network entity is configured to: determine, based on the measurement information, a set of one or more cyclic shift offsets from the one or more candidate cyclic shift offsets; and determine the particular cyclic shift offset based on first delay domain information and second delay domain information, wherein the first delay domain information is associated with the particular cyclic shift offset and wherein the second delay domain information is associated with the set of one or more cyclic shift offsets.
6. The first network entity of claim 5, wherein the first delay domain information includes a first delay domain range and the second delay domain information includes a respective delay domain range for each cyclic shift offset of the set of one or more cyclic shift offsets, and wherein, to determine the particular cyclic shift offset, the first network entity is configured to: determine the particular cyclic shift offset based on the first delay domain range not overlapping, in a delay domain, with the respective delay domain range for each cyclic shift offset.
7. The first network entity of claim 6, wherein the first delay domain range is a delay domain range from the particular cyclic shift offset to a next candidate cyclic shift offset included in the one or more candidate cyclic shift offsets.
8. The first network entity of claim 3, wherein, to determine the particular cyclic shift offset, the first network entity is configured to: determine the particular cyclic shift offset using a random selection sequence and a random seed.
9. The first network entity of claim 8, wherein the random seed is based on an identifier associated with the first network entity.
10. The first network entity of claim 9, wherein the identifier is a radio network temporary identifier of the first network entity.
11. The first network entity of claim 1, wherein the communication indicates a common interval associated with the one or more candidate cyclic shift offsets.
12. The first network entity of claim 11, wherein the first network entity is configured to: determine the particular cyclic shift offset from a first one or more cyclic shift offsets of the one or more candidate cyclic shift offsets, wherein the first one or more cyclic shift offsets do not include a second one or more cyclic shift offsets, and wherein the second one or more cyclic shift offsets are associated with one or more detected signals in respective segments of a delay domain.
13. The first network entity of claim 12, wherein the first network entity is configured to: obtain one or more measurement values associated with the resource allocation, wherein the one or more measurement values indicate the one or more detected signals, and wherein the second one or more cyclic shift offsets are associated with the one or more detected signals based on the common interval.
14. The first network entity of claim 1, wherein the communication indicates intervals for respective candidate cyclic shift offsets from the one or more candidate cyclic shift offsets, and wherein the communication indicates an allowable interval associated with the intervals.
15. The first network entity of claim 14, wherein the first network entity is configured to: determine the particular cyclic shift offset from the one or more candidate cyclic shift offsets based on the particular cyclic shift offset being associated with a time domain range of a delay domain that does not overlap with respective segments of the delay domain, and wherein the time domain range is based on the particular cyclic shift offset and the allowable interval, and wherein the with respective segments are associated with one or more detected signals.
16. The first network entity of claim 15, wherein the first network entity is configured to: obtain one or more measurement values associated with the resource allocation, wherein the one or more measurement values indicate the one or more detected signals in the respective segments.
17. A first network entity for wireless communication, comprising: at least one memory; at least one communication interface; and at least one processor coupled to the at least one memory and the at least one communication interface, wherein the first network entity is configured to: transmit a communication indicating frequency modulated continuous waveform (FMCW) reference signal resource information, the FMCW reference signal resource information indicating a resource allocation and one or more candidate cyclic shift offsets; and receive information associated with one or more measurement values of an FMCW reference signal that is communicated using a particular cyclic shift offset from the one or more candidate cyclic shift offsets, wherein the information is associated with a link between a second network entity and a third network entity.
18. The first network entity of claim 17, wherein the resource allocation is associated with a bandwidth that includes one or more subbands, and wherein the first network entity is configured to: transmit, to at least one of the second network entity or the third network entity, an indication of a subband from the one or more subbands to be used for the link, wherein the subband is based on the one or more measurement values.
19. The first network entity of claim 17, wherein the resource allocation includes frequency domain resources that include a bandwidth that includes one or more subbands, and wherein the resource allocation includes one or more time domain resources.
20. The first network entity of claim 17, wherein the communication indicates a random seed associated with a selection of the particular cyclic shift offset from the one or more candidate cyclic shift offsets.

Description

CYCLIC SHIFT OFFSET ALLOCATION FOR FREQUENCY MODULATED CONTINUOUS WAVEFORM REFERENCE SIGNALS FIELD OF THE DISCLOSURE Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for cyclic shift offset allocation for frequency modulated continuous waveform (FMCW) reference signals. INTRODUCTION Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like) . Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) . LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) . A wireless network may include one or more network nodes that support communication for a user equipment (UE) or multiple UEs. A UE may communicate with a network entity via downlink communications and uplink communications. “Downlink” (or “DL” ) refers to a communication link from the network entity to the UE, and “uplink” (or “UL” ) refers to a communication link from the UE to the network node. The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR) , which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink, as well as supporting beamforming, multiple-input  multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. SUMMARY Some aspects described herein relate to a first network entity for wireless communication. The first network entity may include at least one memory and at least one communication interface. The first network entity may include at least one processor coupled to the at least one memory and the at least one communication interface. The first network entity may be configured to receive a communication indicating frequency modulated continuous waveform (FMCW) reference signal resource information, the FMCW reference signal resource information indicating a resource allocation and one or more candidate cyclic shift offsets. The first network entity may be configured to communicate an FMCW reference signal using the resource allocation and a particular cyclic shift offset from the one or more candidate cyclic shift offsets. Some aspects described herein relate to a first network entity for wireless communication. The first network entity may include at least one memory and at least one communication interface. The first network entity may include at least one processor coupled to the at least one memory and the at least one communication interface. The first network entity may be configured to transmit a communication indicating FMCW reference signal resource information, the FMCW reference signal resource information indicating a resource allocation and one or more candidate cyclic shift offsets. The first network entity may be configured to receive information associated with one or more measurement values of an FMCW reference signal that is communicated using a particular cyclic shift offset from the one or more candidate cyclic shift offsets, wherein the information is associated with a link between a second network entity and a third network entity. Some aspects described herein relate to a method of wireless communication performed by a first network entity. The method may include receiving a communication indicating FMCW reference signal resource information, the FMCW reference signal resource information indicating a resource allocation and one or more candidate cyclic shift offsets. The method may inc