Frequency domain (FD) scrambled frequency modulated continuous wave (FMCW) signaling

Abstract

Methods, systems, and devices are described for wireless communication. The described techniques enable devices to distinguish between signals transmitted using frequency modulated continuous wave (FMCW) waveforms. A first wireless device can apply a frequency domain (FD) scrambling sequence to a reference signal for transmission, and a second wireless device can receive at least a portion of the signal and descramble the signal using the FD scrambling sequence. In some examples, the first wireless device can transmit configuration signaling indicating the FD scrambling sequence corresponding to the first wireless device. Additionally or alternatively, the first wireless device can transmit an indication that causes the second wireless device to determine the FD scrambling sequence based on identifier (ID) information (e.g., an ID associated with the first wireless device). In some examples, the first wireless device, the second wireless device, or both can use an analog or digital transceiver.

Description

Cross-referencing

[0001] This patent application claims the benefit of U.S. Patent Application No. 18 / 511,961, filed November 16, 2023, entitled “FREQUENCY DOMAIN(FD)-SCRAMBLED FREQUENCY MODULATED CONTINUOUS WAVE (FMCW) SIGNALING”, which is assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0002] The following content relates to wireless communication, including frequency domain (FD) scrambled frequency modulated continuous wave (FMCW) signaling. Background Technology

[0003] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support communication with multiple users by sharing 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-A 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 technologies such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), or Discrete Fourier Transform Extended Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations, each supporting wireless communication of communication devices, which may be referred to as User Equipment (UE).

[0004] Some wireless communication devices in a wireless communication system can use Frequency Modulated Continuous Wave (FMCW) signaling for sensing, communication, or other purposes. In some cases, the coexistence of multiple transmitting devices or radars within a wireless communication system may potentially interfere with FMCW signaling, thereby reducing the detection capability of FMCW signaling, communication reliability, or both. Summary of the Invention

[0005] The described techniques relate to improved methods, systems, apparatuses, and devices for supporting frequency-domain (FD) scrambling frequency-modulated continuous wave (FMCW) signaling. For example, the described techniques enable a first wireless device to generate an FD representation of a reference signal based on the discrete Fourier transform (DFT) of the FMCW, and to scramble the FD representation of the reference signal using an FD scrambling sequence. The first wireless device can then transmit a wideband signal for channel estimation based on the scrambled FD representation of the reference signal. In some examples, the first wireless device can transmit configuration signaling indicating an FD scrambling sequence associated with the first wireless device. A second wireless device receiving the configuration signaling can use the indicated FD scrambling sequence to descramble a reference signal received from the first wireless device. Additionally or alternatively, the first wireless device can transmit an indication that causes the second wireless device to determine the FD scrambling sequence based on identifier information (e.g., a cell identifier, a user equipment (UE) identifier, or both) associated with the first wireless device.

[0006] The second wireless device can receive at least a portion of a broadband signal. The second wireless device can descramble at least that portion of the broadband signal based on an FD scrambling sequence corresponding to the first wireless device. The second wireless device can communicate signaling to the first wireless device via a channel based on the descrambled portion of the broadband signal, according to channel estimation. In some examples, the second wireless device can determine an identifier of the first wireless device associated with the broadband signal based on the descrambling of that portion of the broadband signal. For example, if the second wireless device successfully descrambles that portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device, the second wireless device can determine that the broadband signal was transmitted by the first wireless device. In some examples, the second wireless device can perform interference cancellation on other signaling (e.g., other FMCW signals) associated with one or more other wireless devices based on determining the identifier of the first wireless device.

[0007] A method for wireless communication by a first wireless device is described. The method may include: generating a digital function (FD) representation of a reference signal based on a digital freeform time (FMCW)-based digital light scrambling (DFT); scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device; and transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0008] A first wireless device for wireless communication is described. The first wireless device may include: one or more memories storing processor-executable code; and one or more processors of the first wireless device (e.g., a UE or a network entity) coupled to the one or more memories. The one or more processors may operate individually or jointly to execute the code to cause the first wireless device to: generate a FD representation of a reference signal based on an FMCW-based DFT; scramble the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device; and transmit a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0009] An apparatus for wireless communication at a first wireless device is described. The apparatus may include: components for generating an FD representation of a reference signal based on a DFT of an FMCW; components for scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device; and components for transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0010] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by one or more processors to: generate a FD representation of a reference signal based on an FMCW-based DFT; scramble the FD representation of the reference signal using an FD scrambling sequence corresponding to a first wireless device; and transmit a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0011] Some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting signaling via a channel based on a scrambled FD representation of a reference signal and a channel estimate of the channel.

[0012] Some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting configuration signaling that indicates an FD scrambling sequence corresponding to the first wireless device. In some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein, the configuration signaling includes Radio Resource Control (RRC) signals, Media Access Control (MAC)-Control Element (CE) signals, Downlink Control Information (DCI) signals, or any combination thereof.

[0013] Some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for transmitting an indication to determine an FD scrambling sequence based on a cell identifier (ID) associated with the first wireless device, a UE ID associated with the first wireless device, or any combination thereof.

[0014] In some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein, the length of the FD scrambling sequence may be based on the capabilities of the second wireless device. In some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein, the capabilities of the second wireless device may be based on the second wireless device's baseband bandwidth processing capabilities, analog reception capabilities, digital reception capabilities, or any combination thereof.

[0015] In some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein, scrambling the FD representation of a reference signal may include operations, features, components, or instructions for scrambling one set of a plurality of consecutive frequency resource sets of the FD representation of the reference signal based on the length of the FD scrambling sequence, wherein the consecutive frequency resource set within the one set of the plurality of consecutive frequency resource sets may be scrambled using corresponding bits of the FD scrambling sequence.

[0016] In some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein, transmitting a broadband signal may include operations, features, components, or instructions for transmitting a broadband signal via a digital or analog transceiver.

[0017] Some examples of the methods, first wireless devices, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for determining an FD scrambling sequence based on a digital modulation scheme of the first wireless device, a cell ID associated with the first wireless device, a UE ID associated with the first wireless device, or any combination thereof.

[0018] A method for wireless communication by a second wireless device is described. The method may include: receiving at least a portion of a broadband signal for channel estimation, the broadband signal being associated with a first wireless device and based on FMCW; descrambling the portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device; and transmitting signaling via the channel based on the descrambled portion of the broadband signal and the channel estimation of the channel.

[0019] A second wireless device for wireless communication is described. The second wireless device may include: one or more memories storing processor-executable code; and one or more processors of the second wireless device (e.g., a UE or network entity) coupled to the one or more memories. The one or more processors may operate individually or jointly to execute the code to cause the second wireless device to: receive at least a portion of a wideband signal for channel estimation, the wideband signal being associated with a first wireless device and based on FMCW; descramble the portion of the wideband signal using an FD scrambling sequence corresponding to the first wireless device; and transmit signaling via the channel based on the descrambled portion of the wideband signal and the channel estimation of the channel.

[0020] An apparatus for a second wireless device for wireless communication is described. The apparatus may include: components for receiving at least a portion of a broadband signal for channel estimation, the broadband signal being associated with a first wireless device and based on FMCW; components for descrambling the portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device; and components for transmitting signaling via the channel based on the descrambled portion of the broadband signal and the channel estimation.

[0021] A non-transitory computer-readable medium storing code for wireless communication is described. The code may include instructions executable by one or more processors to: receive at least a portion of a wideband signal for channel estimation of a channel, the wideband signal being associated with a first wireless device and based on FMCW; descramble the portion of the wideband signal using an FD scrambling sequence corresponding to the first wireless device; and transmit signaling via the channel based on the descrambled portion of the wideband signal and the channel estimation of the channel.

[0022] Some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for determining the ID of a first wireless device associated with a broadband signal based on descrambling that portion of the broadband signal using an FD scrambling sequence. Some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for performing interference cancellation of additional signaling associated with a third wireless device based on the ID of the first wireless device associated with the broadband signal.

[0023] Some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for receiving configuration signaling indicating an FD scrambling sequence. In some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein, the configuration signaling includes RRC signals, MAC-CE signals, DCI signals, or any combination thereof.

[0024] Some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein may also include operations, features, components, or instructions for: receiving an indication for determining an FD scrambling sequence based on a cell ID associated with a first wireless device, a UE ID associated with the first wireless device, or any combination thereof; and determining the FD scrambling sequence based on the indication.

[0025] In some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein, the length of the FD scrambling sequence may be based on the capabilities of the second wireless device. In some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein, the capabilities of the second wireless device may be based on the second wireless device's baseband bandwidth processing capabilities, analog reception capabilities, digital reception capabilities, or any combination thereof.

[0026] In some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein, descrambling a portion of a broadband signal may include operations, features, components, or instructions for descrambling one set of a plurality of consecutive frequency resource sets corresponding to that portion of the broadband signal based on the length of the FD scrambling sequence, wherein corresponding bits of the FD scrambling sequence may be used to descramble the consecutive frequency resource sets within that set of the plurality of consecutive frequency resource sets.

[0027] In some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein, at least the portion of receiving a broadband signal may include operations, features, components, or instructions for receiving at least the portion of a broadband signal via a digital or analog transceiver.

[0028] In some examples of the methods, second wireless devices, apparatuses, and nontransitory computer-readable media described herein, descrambling a portion of a broadband signal may include operations, features, components, or instructions for: generating a local FMCW; and descrambling the portion of the broadband signal by combining the local FMCW with an FMCW corresponding to the broadband signal. Attached Figure Description

[0029] Figure 1 and Figure 2 An example of a wireless communication system supporting frequency domain (FD) scrambled frequency modulated continuous wave (FMCW) signaling is shown, according to one or more aspects of this disclosure.

[0030] Figure 3 Examples of transmitter and receiver procedures supporting FD scrambling FMCW signaling are shown according to one or more aspects of this disclosure.

[0031] Figure 4 An example of a process flow supporting FD scrambling FMCW signaling is shown according to one or more aspects of this disclosure.

[0032] Figure 5 and Figure 6 A block diagram of an apparatus supporting FD scrambling FMCW signaling is shown according to one or more aspects of this disclosure.

[0033] Figure 7 A block diagram of a communication manager supporting FD scrambling FMCW signaling is shown, according to one or more aspects of this disclosure.

[0034] Figure 8 A diagram of a system including a UE supporting FD scrambling FMCW signaling is shown according to one or more aspects of this disclosure.

[0035] Figure 9 A diagram of a system including a network entity supporting FD scrambling FMCW signaling is shown according to one or more aspects of this disclosure.

[0036] Figures 10 to 13 A flowchart illustrating a method for supporting FD scrambling FMCW signaling according to one or more aspects of this disclosure is shown. Detailed Implementation

[0037] Some wireless communication systems (e.g., 5G or 5G+ systems) can provide increased bandwidth allocation for wireless devices. Some such wireless communication systems can support joint communication or radio frequency sensing (JCS) to improve the communication, sensing, or both of wireless devices. In some examples, wireless devices can use frequency modulated continuous wave (FMCW) or waveforms for one or more purposes (e.g., sensing, positioning, communication, JCS). However, in some wireless communication systems, in congested operational environments (e.g., based on the increasing number of radar-equipped vehicles transmitting FMCW signals for sensing, communication, or both), the coexistence of multiple wireless devices transmitting FMCW signals can negatively impact communication. For example, interference caused by other wireless devices transmitting FMCW signals can affect the sensing capabilities of wireless devices receiving one or more FMCW signals, potentially reducing the detection capability of those receiving the signals. To enhance the sensing capabilities and communication reliability of such wireless devices, a wireless communication system can support improved mechanisms for distinguishing transmitted FMCW signals.

[0038] This wireless communication system can support frequency domain (FD) scrambling sequences for distinguishing between FMCW signals. For example, a first wireless device (e.g., a "transmitting device") transmitting an FMCW signal may apply a transmitting device-specific FD scrambling sequence to the FMCW signal before transmitting it. A second wireless device (e.g., a "receiving device") receiving the FMCW signal may receive the FMCW signal and may use the transmitting device-specific FD scrambling sequence to descramble the signal. Based on the receiving device's successful descrambling of the FMCW signal using the transmitting device-specific FD scrambling sequence, the receiving device can determine that the FMCW signal was transmitted by the transmitting device, thereby effectively distinguishing the FMCW signal from other FMCW signals received or otherwise detected at the receiving device. In some examples, the transmitting device may send configuration signaling indicating a transmitting device-specific FD scrambling sequence. Additionally or alternatively, the transmitting device may send an indication that causes the receiving device to use a cell identifier (ID), UE ID, or some combination of these or other identifying information to determine the transmitting device-specific FD scrambling sequence. In some examples, the transmitting device, the receiving device, or both may use an analog transceiver. Alternatively or concurrently, the transmitting device, receiving device, or both may be digital transceivers.

[0039] The various aspects of this disclosure are first described in the context of a wireless communication system. These aspects are further illustrated and described with reference to transmitter processes, receiver processes, and process flows. The various aspects of this disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flowcharts relating to FD scrambling FMCW signaling.

[0040] Figure 1An example of a wireless communication system 100 supporting FD scrambling FMCW signaling according to one or more aspects of this disclosure is shown. The wireless communication system 100 may include one or more network entities 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, a New Radio (NR) network, or a network operating under other systems and radio technologies, including future systems and radio technologies not explicitly mentioned herein.

[0041] Network entity 105 may be distributed across a geographical area to form wireless communication system 100, and may include devices employing different forms or having different capabilities. In various examples, network entity 105 may be referred to as a network element, mobility element, radio access network (RAN) node, or network equipment, among other designations. In some examples, network entity 105 and UE 115 may wirelessly communicate via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, network entity 105 may support coverage area 110 (e.g., a geographical coverage area) within which UE 115 and network entity 105 may establish one or more communication links 125. Coverage area 110 may be an example of a geographical area within which network entity 105 and UE 115 may support the transmission of signals according to one or more radio access technologies (RATs).

[0042] UE 115 can be distributed throughout the coverage area 110 of wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. UE 115 can be devices in different forms or with different capabilities. Figure 1 Some example UE 115s are illustrated herein. The UE 115 described herein can be able to support various types of devices (such as, e.g., ...). Figure 1 It communicates with other UEs (115 or network entity 105) as shown.

[0043] As described herein, nodes of the wireless communication system 100 (which may be referred to as network nodes or wireless nodes) may be network entity 105 (e.g., any network entity described herein), UE 115 (e.g., any UE described herein), network controller, apparatus, device, computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, a node may be UE 115. Alternatively, a node may be network entity 105. Furthermore, a first node may be configured to communicate with a second or third node. In one aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be UE 115. In another aspect of this example, the first node may be UE 115, the second node may be network entity 105, and the third node may be network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different from these examples. Similarly, references to UE 115, network entity 105, device, equipment, computing system, etc., may include disclosures of UE 115, network entity 105, device, equipment, computing system, etc., as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that a first node is configured to receive information from a second node.

[0044] In some examples, network entity 105 may communicate with core network 130, communicate with each other, or both. For example, network entity 105 may communicate with core network 130 via one or more backhaul communication links 120 (e.g., according to S1, N2, N3, or other interface protocols). In some examples, network entities 105 may communicate with each other directly (e.g., directly between network entities 105) or indirectly (e.g., via core network 130) via backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, network entities 105 may communicate with each other via midhaul communication link 162 (e.g., according to midhaul interface protocol) or fronthaul communication link 168 (e.g., according to fronthaul interface protocol) or any combination thereof. Backhaul communication link 120, midhaul communication link 162, or fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, fiber optic links), one or more wireless links (e.g., radio links, wireless optical links), etc., or various combinations thereof. UE 115 can communicate with core network 130 via communication link 155.

[0045] One or more network entities in network entity 105 described herein may include or be referred to as base station 140 (e.g., transceiver base station, radio base station, NR base station, access point, radio transceiver, node B, eNodeB (eNB), next-generation node B or gigabit node B (any of which may be referred to as gNB), 5G NB, next-generation eNB (ng-eNB), home node B, home evolution node B, or other suitable terms). In some examples, network entity 105 (e.g., base station 140) may be implemented in an aggregated (e.g., monolithic, standalone) base station architecture that may be configured to utilize a protocol stack that is physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as base station 140).

[0046] In some examples, network entity 105 may be implemented in a decomposed architecture (e.g., a decomposed base station architecture, a decomposed RAN architecture) that can be configured to utilize protocol stacks physically or logically distributed across two or more network entities 105, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance), or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN)). For example, network entity 105 may include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near real-time RIC, a non-real-time RIC), a service management and orchestration (SMO) 180 system, or any combination thereof. 170 may also be referred to as a radio headend, intelligent radio headend, remote radio headend (RRH), remote radio unit (RRU), or transmit / receive point (TRP). One or more components of network entity 105 in a decomposed RAN architecture may be co-located, or one or more components of network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 in a decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0047] The functional splitting among CU 160, DU 165, and RU 170 is flexible and can support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a protocol stack functional splitting can be used between CU 160 and DU 165, allowing CU 160 to support one or more layers of the protocol stack, and DU 165 to support one or more different layers of the protocol stack. In some examples, CU 160 can host higher protocol layer (e.g., Layer 3 (L3), Layer 2 (L2)) functionalities and signaling (e.g., Radio Resource Control (RRC), Serving Data Adaptation Protocol (SDAP), Packet Data Convergence Protocol (PDCP)). CU 160 can connect to one or more DU 165 or RU 170, and one or more DU 165 or RU 170 can host lower protocol layers, such as Layer 1 (L1) (e.g., Physical (PHY) layer) or L2 (e.g., Radio Link Control (RLC) layer, Medium Access Control (MAC) layer) functionality and signaling, and each can be at least partially controlled by CU 160. Alternatively or additionally, a protocol stack functional split can be employed between DU 165 and RU 170, such that DU 165 can support one or more layers of the protocol stack, and RU 170 can support one or more different layers of the protocol stack. DU 165 can support one or more different cells (e.g., via one or more RU 170). In some cases, functional decomposition between CU 160 and DU 165, or between DU 165 and RU 170, can be performed within the protocol layer (e.g., some functions of the protocol layer can be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer can be performed by different of CU 160, DU 165, or RU 170). CU 160 can be further functionally decomposed into CU control plane (CU-CP) and CU user plane (CU-UP) functions. CU 160 can be connected to one or more DU 165 via midhaul communication link 162 (e.g., F1, F1-c, F1-u), and DU 165 can be connected to one or more RU 170 via fronthaul communication link 168 (e.g., open fronthaul (FH) interface). In some examples, the midhaul communication link 162 or the fronthaul communication link 168 may be implemented based on the interfaces (e.g., channels) between the layers of the protocol stack, which are supported by the corresponding network entities 105 communicating via such communication links.

[0048] In some wireless communication systems (e.g., wireless communication system 100), the infrastructure and spectrum resources for radio access may support wireless backhaul link capabilities to supplement wired backhaul connections, thereby providing an IAB network architecture (e.g., to core network 130). In some cases, in an IAB network, one or more network entities 105 (e.g., IAB node 104) may be partially controlled by each other. One or more IAB nodes 104 may be referred to as donor entities or IAB donors. One or more DU 165s or one or more RU 170s may be partially controlled by one or more CU 160s associated with donor network entity 105 (e.g., donor base station 140). One or more donor network entities 105 (e.g., IAB donors) may communicate with one or more additional network entities 105 (e.g., IAB node 104) via supported access and backhaul links (e.g., backhaul communication link 120). IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a DU 165 of a coupled IAB donor. The IAB-MT may include a separate set of antennas for relaying communication with UE 115, or may share the same antennas (e.g., those of RU 170) for access to IAB node 104 via DU 165 of IAB node 104. (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, IAB node 104 may include a DU 165 that supports communication links with additional entities (e.g., IAB node 104, UE 115) within a relay chain or configuration (e.g., downstream) of the access network. In such cases, one or more components of the decomposed RAN architecture (e.g., one or more IAB nodes 104 or components of IAB node 104) may be configured to operate according to the techniques described herein.

[0049] In the context of applying the techniques described herein to a decomposed RAN architecture, one or more components of the decomposed RAN architecture can be configured to support frequency domain (FD) scrambled frequency modulated continuous wave (FMCW) signaling as described herein. For example, some operations described as being performed by UE 115 or network entity 105 (e.g., base station 140) may additionally or alternatively be performed by one or more components of the decomposed RAN architecture (e.g., IAB node 104, DU 165, CU 160, RU 170, RIC 175, SMO 180).

[0050] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, etc., which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0051] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, network entities 105, and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 As shown.

[0052] UE 115 and network entity 105 can wirelessly communicate with each other via one or more communication links 125 (e.g., access links) using resources associated with one or more carriers. The term "carrier" can refer to a set of RF spectrum resources having a physical layer structure defined for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the RF spectrum band (e.g., a bandwidth portion (BWP)) operating according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used in conjunction with both frequency division duplex (FDD) component carriers and time division duplex (TDD) component carriers. Communication between network entity 105 and other devices can refer to communication between these devices and any part of network entity 105 (e.g., entity, sub-entity). For example, the terms “send,” “receive,” or “communicate” when referring to network entity 105 can refer to any part of the RAN’s network entity 105 (e.g., base station 140, CU160, DU 165, RU 170) communicating with another device (e.g., directly or via one or more other network entities 105).

[0053] The communication link 125 shown in the wireless communication system 100 may include downlink transmission (e.g., forward link transmission) from network entity 105 to UE 115, uplink transmission (e.g., return link transmission) from UE 115 to network entity 105, or both, as well as other transmission configurations. A carrier may carry downlink communication or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0054] A carrier may be associated with a specific bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one bandwidth in a set of bandwidths for a particular radio access technology (e.g., 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). Devices of the wireless communication system 100 (e.g., network entity 105, UE 115, or both) may have hardware configurations that support communication using a specific carrier bandwidth, or may be configured to support communication using one of the carrier bandwidths in a set of carrier bandwidths. In some examples, the wireless communication system 100 may include network entity 105 or UE 115 that supports concurrent communication using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., subband, BWP) or all of the carrier bandwidth.

[0055] The signal waveform transmitted via a carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may refer to a resource of one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and subcarrier spacing may be inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the decoding rate of the modulation scheme, or both), such that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high modulation scheme order may correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial resources may increase the data rate or data integrity used for communication with UE 115.

[0056] It can support one or more sets of parameters for a carrier, and the set of parameters may include subcarrier spacing ( (and cyclic prefix). A carrier can be divided into one or more BWPs with the same or different sets of parameters. In some examples, multiple BWPs can be used to configure UE 115. In some examples, a single BWP of a carrier can be active at a given time, and the communication of UE 115 can be constrained to one or more active BWPs.

[0057] The time interval for network entity 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period. seconds, of which It can represent the supported subcarrier spacing, and This can represent the supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0058] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into a number of time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix appended to each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple micro-time slots associated with one or more symbols. Excluding the cyclic prefix, each symbol period may be associated with one or more (e.g., The duration of a symbol period is associated with a (number) sampling period. The duration of a symbol period can depend on the subcarrier spacing or the operating frequency band.

[0059] A subframe, time slot, micro-time slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in a burst of shortened TTIs (sTTIs)).

[0060] Depending on the technology, carriers can be used to multiplex physical channels for communication. For example, one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or hybrid TDM-FDM techniques can be used to multiplex physical control channels and physical data channels for signaling via a downlink carrier. The control region (e.g., control resource set (CORESET)) of the physical control channel can be defined by a set of symbol periods and can extend across the system bandwidth of the carrier or a subset of that bandwidth. One or more control regions (e.g., CORESET) can be configured for a set of UEs 115. For example, one or more UEs in UE 115 can monitor or search for control regions to obtain control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a concatenated manner. The aggregation level of control channel candidates can refer to the amount of control channel resources (e.g., control channel elements (CCEs)) associated with coded information for a control information format having a given payload size. The search space set may include: a common search space set configured to transmit control information to multiple UEs 115, and a UE-specific search space set used to transmit control information to a specific UE 115.

[0061] Network entity 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hotspots, or other types of cells, or any combination thereof). The term "cell" may refer to a logical communication entity used to communicate with network entity 105 (e.g., using a carrier) and may be associated with an identifier used to distinguish adjacent cells (e.g., Physical Cell Identifier (PCID), Virtual Cell Identifier (VCID), or other cell identifier). In some examples, a cell may also refer to a coverage area 110 or a portion of coverage area 110 (e.g., a sector) in which a logical communication entity operates. Depending on various factors such as the capabilities of network entity 105, the extent of such cells may range from smaller areas (e.g., structures, subsets of structures) to larger areas. For example, a cell may be or may include buildings, subsets of buildings, or external space between or overlapping coverage areas 110, etc.

[0062] Macro cells typically cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access to UE 115 that has a service subscription with a network provider supporting the macro cell. In contrast, small cells may be associated with a lower-power network entity 105 (e.g., a lower-power base station 140) and may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to UE 115 that has a service subscription with a network provider, or restricted access to UE 115 associated with a small cell (e.g., UE 115 in a Closed Subscriber Group (CSG), or UE 115 associated with a user in a home or office). Network entity 105 may support one or more cells and may also use one or more component carriers to support communication via one or more cells.

[0063] In some examples, a carrier can support multiple cells and can be configured with different cells based on different protocol types that can provide access for different types of devices (e.g., MTC, Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB)).

[0064] In some examples, network entity 105 (e.g., base station 140, RU 170) may be mobile, and thus provide communication coverage to mobile coverage areas 110. In some examples, different coverage areas 110 associated with different technologies may overlap, but the different coverage areas 110 may be supported by the same network entity 105. In some other examples, overlapping coverage areas 110 associated with different technologies may be supported by different network entities 105. The wireless communication system 100 may include, for example, a heterogeneous network in which different types of network entities 105 use the same or different radio access technologies to provide coverage for various coverage areas 110.

[0065] Wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private or group communication and may be supported by one or more services, such as push-to-talk, video, or data. Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general business applications. The terms “ultra-reliable,” “low-latency,” and “ultra-reliable low-latency” are used interchangeably herein.

[0066] In some examples, UE 115 may be configured to support direct communication with other UE 115s via device-to-device (D2D) communication link 135 (e.g., according to peer-to-peer (P2P), D2D, or sidelink protocols). In some examples, one or more UE 115s performing D2D communication in a group may be within the coverage area 110 of network entity 105 (e.g., base station 140, RU 170), which may support aspects of such D2D communication configured (e.g., scheduled by network entity 105). In some examples, one or more UE 115s in such a group may be outside the coverage area 110 of network entity 105, or may otherwise be unable or not configured to receive transmissions from network entity 105. In some examples, the group of UE 115s communicating via D2D communication may support a one-to-many (1:M) system, where each UE 115 transmits to each of the other UE 115s in the group. In some examples, network entity 105 may facilitate the scheduling of resources used for D2D communication. In other examples, D2D communication may be performed between UEs 115 without involving network entity 105.

[0067] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), and may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) for managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) for routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by network entity 105 (e.g., base station 140) associated with core network 130. User IP packets can be delivered through user plane entities, which provide IP address allocation and other functions. User plane entities may connect to one or more network operator IP services 150. IP services 150 may include access to the Internet, intranets, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0068] Wireless communication system 100 can operate using one or more frequency bands in the range of 300 MHz to 300 GHz. Generally, the area from 300 MHz to 3 GHz is referred to as the Ultra High Frequency (UHF) band or decimeter band because the wavelength range is approximately one decimeter to one meter in length. UHF waves may be blocked or redirected by buildings and environmental features (which may be referred to as clusters), but these waves are sufficient to penetrate structures so that macrocells can provide service to UE 115 located indoors. Compared to communication using smaller frequencies and longer waves in the High Frequency (HF) or Very High Frequency (VHF) portions of the spectrum below 300 MHz, communication using UHF waves can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0069] Wireless communication system 100 may utilize licensed and unlicensed RF spectrum bands. For example, wireless communication system 100 may use unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band) to employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology. When operating with unlicensed RF spectrum bands, devices such as network entity 105 and UE 115 may employ carrier sensing for collision detection and avoidance. In some examples, operation using unlicensed frequency bands may be combined with component carriers operating with licensed frequency bands based on carrier aggregation configurations (e.g., LAA). Operation using unlicensed spectrum may include downlink transmission, uplink transmission, P2P transmission, or D2D transmission, etc.

[0070] Network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of network entity 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which can support MIMO operation or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly such as an antenna tower. In some examples, the antennas or antenna arrays associated with network entity 105 may be located at different geographical locations. Network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that network entity 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may include one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals transmitted via the antenna ports.

[0071] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., network entity 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array such that some signals propagating along a specific orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include applying amplitude shifts, phase shifts, or both to the signals carried via the antenna elements associated with the device. The adjustments associated with each of these antenna elements may be defined by a beamforming weight set associated with a specific orientation (e.g., relative to the antenna array of the transmitting or receiving device or relative to some other orientation).

[0072] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or PDCP layer can be IP-based. The RLC layer performs packet segmentation and reassembly for transmission via logical channels. The MAC layer performs priority processing and multiplexing of logical channels to transport channels. The MAC layer can also implement error detection, error correction, or both to support retransmission and improve link efficiency. In the control plane, the RRC layer can provide the establishment, configuration, and maintenance of RRC connections between the UE 115 and network entity 105 or core network 130 supporting user plane data radio bearers. The PHY layer maps transport channels to physical channels.

[0073] Some wireless communication systems 100 (e.g., 5G or 5G+ systems) may provide increased bandwidth allocation for wireless devices (e.g., UE 115, network entity 105, or both). Some such wireless communication systems 100 may support JCS to improve the communication, sensing, or both of the wireless devices. In some examples, wireless devices may use FMCW for one or more purposes (e.g., sensing, location, communication, JCS). However, in some other wireless communication systems, in congested operational environments (e.g., based on the increasing number of radar-equipped vehicles transmitting FMCW signals for sensing, communication, or both), the coexistence of multiple wireless devices transmitting FMCW signals may negatively impact communication. For example, interference caused by other wireless devices transmitting FMCW may affect the sensing capabilities of wireless devices receiving one or more FMCW signals, potentially reducing the detection capability of those receiving the one or more FMCW signals. To enhance the sensing capabilities and communication reliability of such wireless devices, wireless communication systems 100 may support improved mechanisms for distinguishing transmitted FMCW signals.

[0074] Wireless communication system 100 may support FD scrambling sequences for distinguishing between FMCWs. For example, a first wireless device transmitting an FMCW signal (e.g., a "transmitting device," which may be an example of network entity 105 or UE 115) may apply a transmitting device-specific FD scrambling sequence to the FMCW signal before transmitting it. A second wireless device receiving an FMCW signal (e.g., a "receiving device," which may be an example of another network entity 105 or UE 115) may receive the FMCW signal and may use the transmitting device-specific FD scrambling sequence to descramble the signal. Based on the receiving device's successful descrambling of the FMCW signal using the transmitting device-specific FD scrambling sequence, the receiving device may determine that the FMCW signal was transmitted by the transmitting device, thereby effectively distinguishing the FMCW signal from other FMCW signals received at the receiving device or otherwise detected. In some examples, the transmitting device may send configuration signaling that instructs a transmitting device-specific FD scrambling sequence. Additionally or alternatively, the transmitting device may send an indication that causes the receiving device to use the cell ID, UE ID, or some combination of these or other identifying information to determine a transmitting device-specific FD scrambling sequence. In some examples, the transmitting device, the receiving device, or both may use an analog transceiver for FMCW signaling. Additionally or alternatively, the transmitting device, the receiving device, or both may use a digital transceiver for FMCW signaling.

[0075] Figure 2 An example of a wireless communication system 200 supporting FD scrambling FMCW signaling according to one or more aspects of this disclosure is shown. In some examples, the wireless communication system 200 may implement or be implemented by aspects of the wireless communication system 100. For example, the wireless communication system 200 may include one or more network entities 105 (e.g., network entity 105-a) and one or more UEs 115 (e.g., UE 115-a), which may be referenced Figure 1Examples of the corresponding devices described herein. In some examples, a first wireless device transmitting a signal (which may be referred to herein as a "transmitting device" or "transmitter device") and a second wireless device receiving a signal (which may be referred to herein as a "receiving device" or "receiver device") may communicate scrambled FMCW signaling 220 via channel 205. The scrambled FMCW signaling 220 may be used to facilitate the receiving device's estimation of channel 205 or may indicate communication information. In some examples, the transmitting device may be an example of network entity 105-a, and the receiving device may be an example of UE 115-a. Additionally or alternatively, UE 115 may operate as a transmitting device as described herein, network entity 105 may operate as a receiving device as described herein, or they may operate as both a transmitting device and a receiving device. In some examples, the transmitting device, the receiving device, or both may include a transmitter, a receiver, a transceiver, or some combination thereof that performs the signaling described herein.

[0076] In some cases, UE 115-a may estimate (e.g., measure) channel 205 (e.g., OFDM channel or other channels) based on one or more received signals to improve the reliability and throughput of UE 115-a's transmission and reception. In some examples, UE 115-a may support narrowband baseband processing capability 240. UE 115-a may communicate via channel 205 using a first bandwidth portion (BWP) 230 (e.g., associated with narrowband bandwidth according to the UE's narrowband baseband processing capability 240), wherein the first BWP 230 comes from the set of BWPs associated with wideband channel 225. For example, the first BWP 230 may be a subset of the entire channel bandwidth supported by network entity 105-a.

[0077] In some cases, a second BWP 235 associated with wideband channel 225 (e.g., within the channel bandwidth) may be allocated for other purposes (e.g., for spectrum allocation or multiplexing for multiple wireless devices). In some such cases, UE115-a may use one or more signals to measure channel 205 (e.g., perform a channel estimation process) to estimate the channel metric of wideband channel 225 (e.g., to determine the channel metrics of both first BWP 230 and second BWP 235 to determine the preferred subband within the channel bandwidth).

[0078] In some other systems, a UE receiving signaling via the first BWP 230 may be unable to measure channel 205 for the second BWP 235 because it cannot receive one or more signals via the second BWP 235. For example, the UE may be unable to estimate channel 205 over the entire channel bandwidth of the wideband channel 225. In some other cases, such a UE may implement frequency hopping to estimate channel 205 for the second BWP 235, receiving signaling via the first BWP 230 to estimate channel 205 for the first BWP 230, and hopping to receive signaling via the second BWP 235 to estimate channel 205 for the second BWP 235. In some examples, channel 205 via the first BWP 230 may be associated with a relatively lower channel quality metric compared to channel 205 via the second BWP 235. However, because the UE cannot measure channel 205 via the second BWP 235, or due to the delay associated with measuring channel 205 via the second BWP 235 (due to frequency hopping), the UE may not be aware that channel 205 via the second BWP 235 is associated with relatively high channel quality. In some cases, such a UE may continue to communicate via the first BWP 230 instead of the second BWP 235, which may potentially lead to degraded communication performance.

[0079] The wireless communication system 200 may support FMCW-based channel estimation, enabling UE 115-a to perform channel estimation for the wideband channel 225 using narrowband baseband signaling (e.g., via a first BWP 230), for example, based on UE 115-a's narrowband baseband processing capability 240. UE 115-a may select a BWP for communication based on the FMCW-based channel estimation. In some examples, UE 115-a may (e.g., in capability signaling) send an indication of UE 115-a's narrowband baseband processing capability 240 to network entity 105-a. This capability signaling may instruct UE 115-a to support channel estimation for the wideband channel 225 using signaling via the narrowband channel (e.g., the first BWP 230 from the supported BWP set of the wideband channel 225). Additionally or alternatively, UE 115-a may receive an indication of resource timing for communication of scrambled FMCW signals via a first BWP 230. Accordingly, UE 115-a may receive scrambled FMCW signals via the resource timing of the first BWP 230. UE 115-a may perform a channel estimation process (e.g., FMCW-based estimation of channel 205) based on samples of combined FMCW signals (e.g., narrowband signals), wherein the combined FMCW signals include a combination of the received scrambled FMCW signals (e.g., wideband signals) and a second FMCW signal (e.g., local FMCW) generated at UE 115-a. UE 115-a may estimate channel 205 on the BWP set (e.g., associated with wideband channel 225) such that UE 115-a can effectively identify and select one or more BWPs (e.g., second BWP 235) from the BWP set supported by wideband channel 225 based on the channel estimation process.

[0080] In some cases, the coexistence of multiple transceivers (e.g., network entity 105 or UE 115) transmitting FMCW signaling within the wireless communication system 200 can negatively impact the sensing capabilities of the transceivers at the wireless devices. For example, multiple transceivers communicating or performing sensing operations within an area (e.g., a cell) may interfere with other transceivers. In some cases, transceiver-induced interference may reduce the ability of wireless devices to effectively sense (e.g., detect) communications, devices, or both within the wireless communication system 200. In some cases, when a transceiver receives an FMCW signal, for example, if the FMCW signal is unscrambled, the transceiver may be unable to detect the identifier information of the device transmitting the FMCW signal (e.g., UE ID in the uplink or cell ID in the downlink). In some examples, the received descrambled FMCW signal may also be interfered with by one or more other FMCW signals.

[0081] The techniques described herein can support FD-scrambled FMCW signaling. For example, a transmitter device (e.g., network entity 105-a) can scramble an FMCW signal in the FD and transmit the scrambled FMCW signaling 220 to a receiver device (e.g., UE 115-a). The receiver device can descramble the scrambled FMCW signaling 220 to measure channel 205 (e.g., use the signaling to perform channel estimation). For example, the device can use FD-scrambled FMCW signaling to support channel estimation for any type of channel (e.g., downlink data channel, downlink control channel, uplink data channel, uplink control channel, sidelink data channel, sidelink control channel, radio backhaul channel, or any other channel).

[0082] In some examples, the transmitter device may send configuration signaling 210. For example, configuration signaling 210 may indicate the FD scrambling sequence used by the transmitter device to scramble the scrambled FMCW signaling 220. Additionally or alternatively, the transmitter device may send a sequence indication 215, which indicates how the receiver device may determine the FD scrambling sequence (e.g., based on an algorithm, one or more IDs, or any other FD scrambling sequence determination method). Reference Figure 3 The transmitter and receiver devices are discussed in further detail.

[0083] Figure 3 Examples of transmitter and receiver procedures 300 supporting FD scrambling FMCW signaling according to one or more aspects of this disclosure are shown. In some examples, transmitter and receiver procedures 300 may be implemented as described in the references. Figure 1 and Figure 2 The described aspects of wireless communication system 100 or wireless communication system 200, or aspects of both wireless communication systems, may be implemented. For example, one or more transmitters (e.g., first transmitter 302-a and second transmitter 302-b) and one or more receivers (e.g., first receiver 304-a and second receiver 304-b) configured to perform transmitter and receiver process 300 may be as described in the reference. Figure 1 and Figure 2 The described components are one or more network entities 105, one or more UEs 115, or both. In some examples, the transmitter and receiver may communicate scrambled FMCW signaling via a channel, such that the scrambled FMCW signaling can be used to facilitate channel estimation of the channel by the receiver or otherwise by the receiving device (e.g., channel estimation 338-a or channel estimation 338-b).

[0084] In some examples, transmitter 302-a (e.g., a digital transmitter) may use antenna 306-a (e.g., one or more antennas, antenna elements, antenna ports, antenna arrays, or any combination thereof) to transmit an FMCW signal 308-a (e.g., a broadband signal) to receiver 304-a (e.g., a digital receiver). Receiver 304-a may use antenna 306-c (e.g., one or more antennas, antenna elements, antenna ports, antenna arrays, or any combination thereof) to receive the FMCW signal 308-a. Additionally or alternatively, transmitter 302-a may transmit the FMCW signal 308-c to receiver 304-b (e.g., an analog receiver). Receiver 304-b may use antenna 306-d (e.g., one or more antennas, antenna elements, antenna ports, antenna arrays, or any combination thereof) to receive the FMCW signal 308-c. In some examples, transmitter 302-b (e.g., an analog transmitter) may use antenna 306-b (e.g., one or more antennas, antenna elements, antenna ports, antenna arrays, or any combination thereof) to transmit FMCW signal 308-d (e.g., a broadband signal) to receiver 304-a. Additionally or alternatively, transmitter 302-b may transmit FMCW signal 308-b to receiver 304-b.

[0085] In some cases, transmitter 302-a can generate an FMCW signal 310-a (e.g., x(t)). The FMCW signal 310-a can be a carrier frequency signal in the analog domain (e.g., In some examples, transmitter 302-a may perform a Discrete Fourier Transform (DFT) 312 on the FMCW signal 310-a to produce a discrete FMCW signal (e.g., Transmitter 302-a may use one or more components (e.g., hardware, software, or both) configured to generate one or more signals to perform DFT 312.

[0086] In some examples, transmitter 302-a may utilize FD scrambling sequences (e.g., For discrete FMCW signals (e.g., FMCW FD sequences) ) is shaped and scrambled 314 to generate a shaped and scrambled FMCW signal in the FD (e.g., The FD scrambling sequence can be based on an algorithm, a lookup table, a device ID (e.g., cell ID, UE ID), or some combination thereof. In some cases, transmitter 302-a can perform scrambling during FD signal processing.

[0087] Transmitter 302-a can perform an inverse fast Fourier transform (iFFT) 316 on the shaped and scrambled FMCW signal. The iFFT 316 can convert the signal from the FD into a time-domain signal. That is, the iFFT 316 can generate a set of digital signals for transmission via time and frequency resources, these digital signals being shaped; and can modify the time-domain digital signal from parallel to serial 318. In some examples, transmitter 302-a can perform a cyclic prefix (CP) addition 320 to add one or more CPs to the time-domain digital signal. In some cases, transmitter 302-a can use a digital-to-analog converter (DAC) 322 to convert the time-domain digital signal into one or more time-domain analog signals.

[0088] In some examples, transmitter 302-a may use mixer 324-a to combine a time-domain analog signal with a carrier frequency signal 348-a. Mixer 324-a may include one or more components (e.g., hardware, software, or both) of transmitter 302-a configured to combine two or more signals. In some cases, the output of the mixer may be an FMCW signal 308-a or an FMCW signal 308-c, which may be examples of wideband signals. For example, an FMCW signal (e.g., a wideband signal or other signal) may be represented in the FD. ,in Can represent subcarrier k FD channels at locations (e.g., at the serving cell). It can represent an FD scrambling sequence, and This can represent an FMCW FD sequence. In some examples, transmitter 302-a can send FMCW signal 308-a to receiver 304-a. Additionally or alternatively, transmitter 302-a can send FMCW signal 308-c to receiver 304-b.

[0089] In some examples, transmitter 302-ba can generate FMCW signal 310-b (e.g., a broadband signal) by using voltage-controlled oscillator (VCO) 342-a on a varying voltage 340-a. This is used for channel estimation. Transmitter 302-b can use at least one antenna 306-b of transmitter 302-b to transmit (e.g., unicast, multicast, or broadcast) FMCW signal 308-b or FMCW signal 308-d via the channel. In some examples, transmitter 302-b can transmit FMCW signal 308-d to receiver 304-a. Additionally or alternatively, transmitter 302-b can transmit FMCW signal 308-b to receiver 304-b.

[0090] In some cases, receiver 304-a (e.g., a digital receiver) may receive at least a portion of the FMCW signal (e.g., at least a portion of the wideband signal) for channel estimation 338-a. For example, receiver 304-a may receive FMCW signal 308-a or FMCW signal 308-d transmitted by transmitter 302-a or transmitter 302-b, respectively. The FMCW signal received in the FD... can be This indicates that the transmitted FMCW signal includes potential interference from one or more adjacent (e.g., interfering) FMCW signals. For example, Indicates subcarrier k The first FD channel at the location (e.g., at the serving cell). This represents the FD scrambling sequence used by the transmitter. This indicates an FMCW FD sequence (e.g., a sequence used by one or more transmitters). Indicates subcarrier k The second FD channel at the location (e.g., at a neighboring cell), and This represents an FD scrambling sequence used by a neighboring device (e.g., an interfering device). In some examples, receiver 304-a may generate a combined FMCW signal. To generate the combined FMCW signal, receiver 304-a may use mixer 324-a to combine at least a portion of the received FMCW signal with a carrier frequency signal 348-b. In some examples, carrier frequency signal 348-b may be the same as the carrier frequency signal 348-a applied by transmitter 302-a. Mixer 324-a may include one or more components (e.g., hardware, software, or both) configured to combine two or more signals.

[0091] Receiver 304-a may use a low-pass filter (LPF) 326-a to filter the combined FMCW signal. LPF 326-a generates the combined and filtered FMCW signal. LPF 326-a may be an example of a component of receiver 304-a configured to filter signals, or a function supported by receiver 304-a, or both. For example, receiver 304-a may apply an LPF function to the combined FMCW signal. In some examples, receiver 304-a may use an analog-to-digital converter (ADC) 328-a to sample the combined and filtered FMCW signal in the time domain. The sampling rate used to sample the combined and filtered FMCW signal may be based on one or more parameters (e.g., the descrambling process performed by receiver 304-a).

[0092] Receiver 304-a can perform CP removal 330 to remove one or more CPs from the combined and filtered FMCW signal. Receiver 304-b can convert the combined and filtered FMCW signal from serial to parallel 332, and receiver 304-b can perform a Fast Fourier Transform (FFT) 334 on the combined and filtered FMCW signal. FFT 334 can convert the filtered and combined FMCW signal from the time domain to the current domain. That is, FFT 334 can support demodulation of the filtered and combined FMCW signal.

[0093] Receiver 304-a can, for example, be based on an FD scrambling sequence (e.g., The receiver 304-a can use one or more components (e.g., hardware, software, or both) configured to descramble the 336-a signal in the FD to perform this descrambling. For example, the output of the ADC 328-a can be represented in the FD. .

[0094] In some examples, receiver 304-a can descramble the output of ADC 328-a according to the FD scrambling sequence. In some examples, descrambling can avoid increasing (e.g., may not affect) the sampling rate of ADC 328-a. In some cases, receiver 304-a can receive indication or configuration signaling of the FD scrambling sequence, as referenced. Figure 4 As described. In some examples, the output of descrambling 336-a may include a first sequence and a second sequence. For example, descrambling 336-a may output a signal ,in It can be the first sequence based on the FD scrambling sequence, and It can be a second sequence (e.g., a random sequence) based on the scrambling sequence in the second FD channel.

[0095] Receiver 304-a can perform channel estimation 338-a based on the output of descrambling 336-a. By descrambling the signal 338-a used for channel estimation, receiver 304-a can distinguish different FMCW signals transmitted by different transmitters (e.g., different cells, different network entities 105, different UEs 115). Based on channel estimation 338-a, receiver 304-a can determine one or more channel metrics of the channel in which the receiver 304-a receives the FMCW signal. In some cases, receiver 304-a can estimate the wideband channel based on receiving and processing a portion of the wideband FMCW signal (e.g., the narrowband portion).

[0096] In some examples, receiver 304-b (e.g., an analog receiver) can receive at least a portion of the FMCW signal used for channel estimation 338-b (e.g., FMCW signal 308-b or FMCW signal 308-c transmitted by transmitter 302-b or transmitter 302-a, respectively), which may be an example of a broadband signal. Additionally, receiver 304-b can generate an FMCW signal 344 (e.g., a local FMCW signal x) at receiver 304-b by using VCO 342-b on a varying voltage 340-b. 本地 (t)). In some cases, the FMCW signal 344 can be an example of a local carrier frequency signal in the analog domain (e.g., The local FMCW signal 344 generated at receiver 304-b may have an FMCW structure similar to that of FMCW signals 308-b or 308-c transmitted by transmitters 302-b and 302-a, respectively. That is, the exponential function representing the local FMCW signal 344 generated by receiver 304-b can be designed for, for example, channel estimation 338-b using the received FMCW signal.

[0097] Receiver 304-b can use the received FMCW signal and the generated local FMCW signal 344 to generate a combined FMCW signal. To generate the combined FMCW signal, receiver 304-b can use mixer 324-c to combine the received FMCW signal (e.g., a portion of a broadband signal) with the locally generated FMCW signal 344. Mixer 324-c may include one or more components (e.g., hardware, software, or both) configured to combine two or more signals.

[0098] Receiver 304-b can filter the combined FMCW signal by applying an LPF function to the combined FMCW signal using LPF 326-b. LPF 326-b generates the combined and filtered FMCW signal. LPF 326-b can be an example of a component of receiver 304-b configured to filter signals, or a function supported by receiver 304-b. In some examples, receiver 304-b can use ADC 328-b to sample the combined and filtered FMCW signal in the time domain. In some examples, the output of ADC 328-b can be (or similar to) a scrambling sequence (e.g., ) and subcarriers k FD channels at (e.g., The result of multiplying in FD (e.g., Example. The sampling rate used to sample the combined and filtered FMCW signal can be based on one or more parameters. In some cases, the sampling rate of the receiver 304-b (e.g., ADC sampling rate) may be relatively low compared to a digital receiver.

[0099] Receiver 304-b can descramble the output of ADC 328-b according to the FD scrambling sequence. Receiver 304-b can perform descrambling 336-b using one or more components (e.g., hardware, software, or both) configured to descramble the FMCW signal 336-b. In some cases, receiver 304-b can descramble the FMCW signal 336-b during time-domain signal processing. The output of ADC 328-b can be included in the FD by... The signal represented, where Indicates subcarrier k The first FD channel at the location (e.g., at the serving cell). Indicates subcarrier k The second FD channel at a location (e.g., at a neighboring cell), This represents the FD scrambling sequence, and This represents the FD scrambling sequence in the second FD channel.

[0100] Receiver 304-b can descramble the output of ADC 328-b based on the FD scrambling sequence. In some examples, descrambling may not affect the sampling rate of ADC 328-b. In some cases, receiver 304-b may receive indications or configuration signaling for the FD scrambling sequence, as described in reference [reference missing]. Figure 4 As described. In some examples, the output of descrambling 336-b may include a first sequence and a second sequence. For example, the output may be derived from... It means that, among them It can be the first sequence based on the FD scrambling sequence, and It can be a second sequence (e.g., a random sequence) based on the scrambling sequence in the second FD channel.

[0101] Receiver 304-b can perform timing alignment 346 on the output of the descrambling process. In some examples, the output of timing alignment 346 can be a subsampled FD channel estimate of the channel. Receiver 304-b can thus descramble the FMCW signal for channel estimation 338-b. By descrambling the FMCW signal used for channel estimation 338-b using an FD scrambling sequence, receiver 304-b can distinguish different FMCW signals transmitted by different transmitters (e.g., different cells, network entity 105, or UE 115).

[0102] In some examples, receiver 304-a, receiver 304-b, or both can perform interference cancellation on the received FMCW signal. For example, the receiver can apply an iFFT to the output of descrambling 336-a or descrambling 336-b. In some cases, the output of the iFFT can be represented as... ,in It can be the iFFT output of the first sequence based on the FD scrambled sequence (e.g., ),and It can be the iFFT output of a second sequence based on the scrambled sequence in the second FD channel (e.g., The receiver can filter and separate the results of the iFFT applied to the output of the descrambling process to perform interference cancellation on other transmitted signals.

[0103] Figure 4 An example of a process flow 400 supporting FD scrambling FMCW signaling is shown according to one or more aspects of this disclosure. Process flow 400 can be implemented via references herein. Figure 1 and Figure 2 The described aspects of wireless communication systems 100 and 200 are executed. For example, UE 115-b and network entity 105-b can execute aspects of process flow 400, and the UE and network entity can be examples of UE 115 and network entity 105 as described herein. In the following description of process flow 400, the operations performed by UE 115-b and network entity 105-b may be performed in a different order than shown. Some operations may be omitted from process flow 400, and other operations may be added to process flow 400. Furthermore, although some operations or signaling are shown to occur at different times for discussion purposes, these operations may occur at the same time. Additionally or alternatively, other wireless devices may execute aspects of process flow 400. For example, UE 115 may operate as a transmitting device, a receiving device, or both, with reference to the operations of process flow 400, and network entity 105 may operate as a transmitting device, a receiving device, or both, with reference to the operations of process flow 400.

[0104] In some examples, at 405, network entity 105-b may send configuration signaling to UE 115-b. In some cases, the configuration signaling may indicate the FD scrambling sequence corresponding to network entity 105-b. For example, network entity 105-b may send configuration signaling to UE 115-b indicating the FD scrambling sequence for FD scrambling digital FMCW transmission. The configuration signaling may be an example of RRC signaling, MAC control element (CE), downlink control information (DCI) signaling, or any other configuration signaling.

[0105] At 410, network entity 105-b can generate the FD representation of the reference signal. In some examples, the FD representation of the reference signal can be based on the DFT of FMCW. In some examples, at 415, network entity 105-b can determine the FD scrambling sequence. In some cases, network entity 105-b can determine the FD scrambling sequence according to an algorithm. In some cases, the algorithm can be based on a digital modulation scheme (e.g., binary phase shift keying (BPSK) or some other modulation scheme). In some examples, the length of the FD scrambling sequence (e.g., length...) n The capabilities of UE 115-b may be based on the following: baseband bandwidth processing capabilities, analog reception capabilities (e.g., if UE 115-b includes an analog receiver or transceiver), digital reception capabilities (e.g., if UE 115-b includes a digital receiver or transceiver), or any combination thereof.

[0106] At 420, network entity 105-b can use an FD scrambling sequence to scramble the FD representation of the reference signal. In some examples, scrambling (e.g., the FD scrambling sequence) may be based on configuration signaling. In some other examples, scrambling (e.g., the FD scrambling sequence) may be based on the ID of network entity 105-b (e.g., cell ID), the ID of UE 115-b, or both. Additionally or alternatively, scrambling may include scrambling a set of multiple consecutive frequency resources (e.g., consecutive resource elements (REs) or consecutive resource blocks (RBs)) based on the length of the FD scrambling sequence. In some examples, each set of multiple consecutive frequency resource sets is scrambled using the corresponding bits of the FD scrambling sequence. For example, for spanning... N The bandwidth and length of each frequency resource are n The FD scrambling sequence can be scrambled using one bit of the FD scrambling sequence to divide a number of... N Divide by n (e.g., rounded up using a rounding function) scrambling of continuous frequency resources. In some cases, the expected or predicted narrowband baseband bandwidth can be based on the FD scrambling sequence length (e.g., a relatively long length). n This can increase the expected or predicted narrowband baseband bandwidth.

[0107] In some cases, at 425, UE 115-b may receive an indication for determining the FD scrambling sequence. In some examples, this indication may be based on the ID of network entity 105-b, the ID of UE 115-b, or both. For example, network entity 105-b may instruct UE 115-b to use or reuse the cell ID, UE-ID, etc., to determine the FD scrambling sequence for FD-scrambling FMCW transmission.

[0108] At 430, network entity 105-b may transmit a wideband signal for channel estimation based on the scrambled FD representation of the reference signal. For example, this wideband signal may be an example of FD-scrambled FMCW transmission based on an FD scrambling sequence for network entity 105-b. UE 115-b may receive at least a portion of the wideband signal. In some examples, the wideband signal may enable channel estimation for the channel at UE 115-b.

[0109] In some cases, at 435, UE 115-b may generate an FMCW (e.g., a local FMCW). In some examples, the local FMCW may be generated based on UE 115-b including an analog receiver. At 440, UE 115-b may use an FD scrambling sequence to descramble a portion of the broadband signal. In some examples, UE 115-b may descramble that portion of the broadband signal based on the FMCW generated at UE 115-b. Additionally or alternatively, UE 115-b may descramble that portion based on UE 115-b's ID.

[0110] In some examples, at 445, UE 115-b may determine that network entity 105-b transmitted a broadband signal based on the successful descrambling of a portion of the broadband signal using an FD scrambling sequence corresponding to network entity 105-b. For example, UE 115-b may determine the ID of network entity 105-b based on descrambling that portion of the broadband signal. In some cases, at 450, UE 115-b may perform interference cancellation on at least the second network entity 105, the second UE 115, or both. In some examples, interference cancellation may be based on the determination that network entity 105-b transmitted a broadband signal. UE 115-b may perform interference cancellation to mitigate interference generated by other FMCW transmissions via channel detection or reception.

[0111] At 455, UE 115-b can communicate signaling via the channel and network entity 105-b. In some examples, UE 115-b can communicate signaling based on a channel estimate of the channel based on a descrambled portion of the broadband signal.

[0112] Figure 5A block diagram 500 of an apparatus 505 supporting FD scrambling FMCW signaling according to one or more aspects of this disclosure is shown. Apparatus 505 may be an example of aspects of a UE 115 or network entity 105 as described herein. Apparatus 505 may include a receiver 510, a transmitter 515, and a communication manager 520. Apparatus 505, or one or more components of apparatus 505 (e.g., receiver 510, transmitter 515, and communication manager 520), may include at least one processor that may be coupled to at least one memory to individually or jointly support or implement the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0113] Receiver 510 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to FD scrambling FMCW signaling). The information may be passed to other components of device 505. Receiver 510 may utilize a single antenna or a collection of antennas.

[0114] Transmitter 515 may provide components for transmitting signals generated by other components of device 505. For example, transmitter 515 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to FD scrambling FMCW signaling). In some examples, transmitter 515 may be co-located with receiver 510 in a transceiver module. Transmitter 515 may utilize a single antenna or a collection of multiple antennas.

[0115] The communication manager 520, receiver 510, transmitter 515, or various combinations thereof, or various components thereof, may be examples of components used to perform various aspects of FD scrambling FMCW signaling as described herein. For example, the communication manager 520, receiver 510, transmitter 515, or various combinations thereof, or components thereof, may be able to perform one or more of the functions described herein.

[0116] In some examples, the communication manager 520, receiver 510, transmitter 515, or various combinations or components thereof may be implemented in hardware (e.g., in communication management circuitry). The hardware may include at least one of the following: a processor, digital signal processor (DSP), central processing unit (CPU), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, microcontroller, discrete gate or transistor logic device, discrete hardware component, or any combination thereof, configured as or otherwise individually or collectively to support components for performing the functions described herein. In some examples, at least one processor and at least one memory coupled to said at least one processor may be configured to perform one or more of the functions described herein (e.g., executing instructions stored in at least one memory individually or collectively by one or more processors).

[0117] Additionally or alternatively, the communication manager 520, receiver 510, transmitter 515, or various combinations or components thereof may be implemented in code executed by at least one processor (e.g., as communication management software or firmware). If implemented in code executed by at least one processor, the functionality of the communication manager 520, receiver 510, transmitter 515, or various combinations or components thereof may be performed by any combination of a general-purpose processor, DSP, CPU, ASIC, FPGA, microcontroller, or these or other programmable logic devices (e.g., configured as or otherwise individually or jointly to support components for performing the functions described in this disclosure).

[0118] In some examples, the communication manager 520 may be configured to use or otherwise cooperate with the receiver 510, the transmitter 515, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 520 may receive information from the receiver 510, transmit information to the transmitter 515, or be integrated with the receiver 510, the transmitter 515, or both to acquire information, output information, or perform various other operations as described herein.

[0119] Receiver 510 may be an example or component of an analog receiver, digital receiver, analog transceiver, or digital transceiver. Similarly, transmitter 515 may be an example or component of an analog transmitter, digital transmitter, analog transceiver, or digital transceiver.

[0120] In some examples, the communication manager 520 may support wireless communication at a first wireless device according to examples disclosed herein. For example, the communication manager 520 may be capable of, configured to, or operable to support components for generating an FD representation of a reference signal based on the FMCW-based DFT. The communication manager 520 may be capable of, configured to, or operable to support components for scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device. The communication manager 520 may be capable of, configured to, or operable to support components for transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0121] Additionally or alternatively, the communication manager 520 may support wireless communication at a second wireless device according to the examples disclosed herein. For example, the communication manager 520 may be capable of, configured to, or operated to support components for: receiving at least a portion of a broadband signal for channel estimation, the broadband signal being associated with the first wireless device and based on FMCW. The communication manager 520 may be capable of, configured to, or operated to support components for: descrambling that portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device. The communication manager 520 may be capable of, configured to, or operated to support components for: transmitting signaling via the channel based on the channel estimation of the channel, according to the descrambled portion of the broadband signal.

[0122] By including or configuring a communication manager 520 according to an example as described herein, device 505 (e.g., controlling receiver 510, transmitter 515, communication manager 520, or a combination thereof, or at least one processor otherwise coupled thereto) can support techniques for reducing processing, lowering power consumption (e.g., measuring wideband channels using narrowband baseband chains), and utilizing communication resources more efficiently. For example, device 505 can reduce processing overhead associated with retransmissions based on interference cancellation supported by successful descrambling of FMCW signaling (e.g., effectively improving communication reliability and sensing).

[0123] Figure 6A block diagram 600 of a device 605 supporting FD scrambling FMCW signaling according to one or more aspects of this disclosure is shown. Device 605 may be an example of aspects of device 505, UE 115, or network entity 105 as described herein. Device 605 may include a receiver 610, a transmitter 615, and a communication manager 620. Device 605 or one or more components of device 605 (e.g., receiver 610, transmitter 615, and communication manager 620) may include at least one processor that can be coupled to at least one memory to support the described techniques. Each of these components may communicate with each other (e.g., via one or more buses).

[0124] Receiver 610 may provide components for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to FD scrambling FMCW signaling). The information may be passed to other components of device 605. Receiver 610 may utilize a single antenna or a collection of antennas.

[0125] Transmitter 615 may provide components for transmitting signals generated by other components of device 605. For example, transmitter 615 may transmit information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, and information channels related to FD scrambling FMCW signaling). In some examples, transmitter 615 may be co-located with receiver 610 in a transceiver module. Transmitter 615 may utilize a single antenna or a collection of multiple antennas.

[0126] Device 605 or its various components may be examples of parts for performing various aspects of FD scrambling FMCW signaling as described herein. For example, communication manager 620 may include FD FMCW generation component 625, FD scrambling component 630, wideband signaling component 635, wideband signal receiving component 640, FD descrambling component 645, channel signaling component 650, or any combination thereof. Communication manager 620 may be examples of various aspects of communication manager 520 as described herein. In some examples, communication manager 620 or its various components may be configured to use or otherwise cooperate with receiver 610, transmitter 615, or both to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, communication manager 620 may receive information from receiver 610, transmit information to transmitter 615, or be integrated in combination with receiver 610, transmitter 615, or both to acquire information, output information, or perform various other operations as described herein.

[0127] Communication manager 620 can support wireless communication at a first wireless device according to the examples disclosed herein. FD FMCW generation component 625 is capable of, configured to, or operable to support components for generating an FD representation of a reference signal based on the DFT of FMCW. FD scrambling component 630 is capable of, configured to, or operable to support components for scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device. Wideband signaling component 635 is capable of, configured to, or operable to support components for transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0128] Additionally or alternatively, the communication manager 620 may support wireless communication at a second wireless device according to the examples disclosed herein. The wideband signal receiving component 640 is capable of, configured to, or operable to support components for receiving at least a portion of a wideband signal for channel estimation, the wideband signal being associated with the first wireless device and based on FMCW. The FD descrambling component 645 is capable of, configured to, or operable to support components for descrambling that portion of the wideband signal using an FD scrambling sequence corresponding to the first wireless device. The channel signaling component 650 is capable of, configured to, or operable to support components for transmitting signaling via the channel based on the channel estimation of the channel, using the descrambled portion of the wideband signal.

[0129] Figure 7A block diagram 700 of a communication manager 720 supporting FD scrambling FMCW signaling according to one or more aspects of this disclosure is shown. The communication manager 720 may be an example of aspects of the communication manager 520, communication manager 620, or both as described herein. The communication manager 720 or its various components may be examples of components for performing various aspects of the FD scrambling FMCW signaling as described herein. For example, the communication manager 720 may include an FD FMCW generation component 725, an FD scrambling component 730, a wideband signaling component 735, a wideband signal receiving component 740, an FD descrambling component 745, a channel signaling component 750, a sequence configuration signaling component 755, a sequence indication component 760, a sequence determination component 765, an identifier component 770, an FMCW generation component 775, an interference cancellation component 780, or any combination thereof. These components, or each of their components or sub-components (e.g., one or more processors, one or more memories), may communicate directly or indirectly with each other (e.g., via one or more buses), and such communication may include communication within protocol layers of the protocol stack, communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack, within devices, components, or virtualization components associated with network entity 105, between devices, components, or virtualization components associated with network entity 105), or any combination thereof.

[0130] Communication manager 720 can support wireless communication at a first wireless device according to the examples disclosed herein. FD FMCW generation component 725 is capable of, configured to, or operable to support components for generating an FD representation of a reference signal based on the DFT of FMCW. FD scrambling component 730 is capable of, configured to, or operable to support components for scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device. Wideband signaling component 735 is capable of, configured to, or operable to support components for transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0131] In some examples, the channel signaling component 750 is capable of, configured to, or able to operate to support components for transmitting signaling via the channel based on a scrambled FD representation of a reference signal and a channel estimate of the channel.

[0132] In some examples, the sequence configuration signaling component 755 is capable of, configured to, or able to operate to support components for transmitting configuration signaling that indicates an FD scrambling sequence corresponding to a first radio device. In some examples, the configuration signaling includes RRC signals, MAC-CE signals, DCI signals, or any combination thereof.

[0133] In some examples, the sequence indication component 760 is capable of, configured to, or able to operate to support components for transmitting an indication for determining an FD scrambling sequence based on a cell ID associated with a first radio device, a UE ID associated with the first radio device, or any combination thereof.

[0134] In some examples, the length of the FD scrambling sequence is based on the capabilities of the second wireless device. In some examples, the capabilities of the second wireless device are based on its baseband bandwidth processing capabilities, analog reception capabilities, digital reception capabilities, or any combination thereof.

[0135] In some examples, in order to support scrambling of the FD representation of a reference signal, the FD scrambling component 730 is capable of, can be configured to, or can operate to support components for: scrambling one set of a plurality of consecutive frequency resource sets of the FD representation of the reference signal based on the length of the FD scrambling sequence, wherein the consecutive frequency resource sets within that set of the plurality of consecutive frequency resource sets are scrambled using the corresponding bits of the FD scrambling sequence.

[0136] In some examples, in order to support the transmission of broadband signals, the broadband signaling component 735 is capable of, configured to, or able to operate to support components used for transmitting broadband signals via digital or analog transceivers.

[0137] In some examples, the sequence determination component 765 is capable of, configured to, or able to operate to support components for determining an FD scrambling sequence based on the digital modulation scheme of the first radio device, the cell ID associated with the first radio device, the UE ID associated with the first radio device, or any combination thereof.

[0138] Additionally or alternatively, the communication manager 720 may support wireless communication at a second wireless device according to the examples disclosed herein. The wideband signal receiving component 740 is capable of, configured to, or operable to support components for receiving at least a portion of a wideband signal for channel estimation, the wideband signal being associated with the first wireless device and based on FMCW. The FD descrambling component 745 is capable of, configured to, or operable to support components for descrambling that portion of the wideband signal using an FD scrambling sequence corresponding to the first wireless device. The channel signaling component 750 is capable of, configured to, or operable to support components for transmitting signaling via the channel based on the descrambled portion of the wideband signal and the channel estimation.

[0139] In some examples, the identifier component 770 is capable of, configured to, or operable to support components for determining the ID of a first wireless device associated with the broadband signal based on descrambling that portion of the broadband signal using an FD scrambling sequence. In some examples, the interference cancellation component 780 is capable of, configured to, or operable to support components for performing interference cancellation on additional signaling associated with a third wireless device based on the ID of the first wireless device associated with the broadband signal.

[0140] In some examples, the sequence configuration signaling component 755 is capable of, configured to, or able to operate to support components for receiving configuration signaling indicating an FD scrambling sequence. In some examples, the configuration signaling includes RRC signals, MAC-CE signals, DCI signals, or any combination thereof.

[0141] In some examples, the sequence determination component 765 is capable of, configured to, or able to operate to support components for receiving an indication for determining an FD scrambling sequence based on a cell ID associated with a first radio device, a UE ID associated with the first radio device, or any combination thereof. In some examples, the sequence determination component 765 is capable of, configured to, or able to operate to support components for determining an FD scrambling sequence based on that indication.

[0142] In some examples, the length of the FD scrambling sequence is based on the capabilities of the second wireless device. In some examples, the capabilities of the second wireless device are based on its baseband bandwidth processing capabilities, analog reception capabilities, digital reception capabilities, or any combination thereof.

[0143] In some examples, in order to support the descrambling of this portion of the broadband signal, the FD descrambling component 745 can be, configured, or operated to support components for: descrambling one set of a plurality of consecutive frequency resource sets corresponding to this portion of the broadband signal based on the length of the FD scrambling sequence, wherein the consecutive frequency resource sets within the one set of the plurality of consecutive frequency resource sets are descrambled using the corresponding bits of the FD scrambling sequence.

[0144] In some examples, in order to support receiving at least that portion of a broadband signal, the broadband signal receiving component 740 is capable of, configured to, or operable to support components for receiving at least that portion of a broadband signal via a digital or analog transceiver.

[0145] In some examples, to support the descrambling of this portion of the broadband signal, the FMCW generation component 775 is capable of, configured to, or operable to support components for generating a local FMCW. In some examples, to support the descrambling of this portion of the broadband signal, the FD descrambling component 745 is capable of, configured to, or operable to support components for descrambling this portion of the broadband signal by combining the local FMCW with the FMCW corresponding to the broadband signal.

[0146] Figure 8 A diagram of a system 800 including device 805 supporting FD scrambling FMCW signaling is shown according to one or more aspects of this disclosure. Device 805 may be an example of device 505, device 605, or UE 115 as described herein, or may include components thereof. Device 805 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof (e.g., wirelessly). Device 805 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 820, an input / output (I / O) controller 810, a transceiver 815, an antenna 825, at least one memory 830, code 835, and at least one processor 840. These components may communicate electronically or be coupled in other ways (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 845).

[0147] I / O controller 810 manages the input and output signals of device 805. I / O controller 810 can also manage peripheral devices not integrated into device 805. In some cases, I / O controller 810 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 810 may utilize an operating system such as iOS. ® ANDROID ® MS-DOS ® MS-WINDOWS ® OS / 2 ® UNIX ® LINUX ® Alternatively, the I / O controller 810 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 810 may be implemented as part of one or more processors, such as at least one processor 840. In some cases, a user may interact with the device 805 via the I / O controller 810 or via hardware components controlled by the I / O controller 810.

[0148] In some cases, device 805 may include a single antenna 825. However, in other cases, device 805 may have more than one antenna 825, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. Transceiver 815 may communicate bidirectionally via one or more antennas 825 as described herein, or via a wired or wireless link. For example, transceiver 815 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. Transceiver 815 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 825 for transmission; and demodulating packets received from one or more antennas 825. Transceiver 815, or transceiver 815 and one or more antennas 825, may be an example of transmitter 515, transmitter 615, receiver 510, receiver 610, or any combination thereof or components thereof as described herein.

[0149] At least one memory 830 may include random access memory (RAM) and read-only memory (ROM). At least one memory 830 may store computer-readable, computer-executable code 835, including instructions that, when executed by at least one processor 840, cause device 805 to perform the various functions described herein. Code 835 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 835 may not be directly executable by at least one processor 840, but may enable a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, among other things, at least one memory 830 may also include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0150] At least one processor 840 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, at least one processor 840 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into at least one processor 840. At least one processor 840 may be configured to execute computer-readable instructions stored in memory (e.g., at least one memory 830) to cause device 805 to perform various functions (e.g., functions or tasks supporting FD scrambling FMCW signaling). For example, device 805 or components of device 805 may include at least one processor 840 and at least one memory 830 coupled to or coupled to at least one processor 840, wherein at least one processor 840 and at least one memory 830 are configured to perform the various functions described herein. In some examples, at least one processor 840 may include multiple processors, and at least one memory 830 may include multiple memories. One or more of a plurality of processors may be coupled to one or more of a plurality of memories, which may be configured individually or collectively to perform the various functions described herein. In some examples, at least one processor 840 may be a component of a processing system, which may refer to a system of machines (such as a series of machines), circuitry (including, for example, one or both of processor circuitry (which may include at least one processor 840) and memory circuitry (which may include at least one memory 830)) or components that receive or receive input and process the input to produce, generate or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. Thus, at least one processor 840 or a processing system including at least one processor 840 may be configured, capable of being configured, or operable to cause device 805 to perform one or more of the functions described herein. Furthermore, as described herein, “configured to,” “capable of being configured,” and “operable to” are used interchangeably and may be associated with the ability to perform one or more of the functions described herein when executing code stored in at least one memory 830 or otherwise.

[0151] The communication manager 820 can support wireless communication at a first wireless device according to the examples disclosed herein. For example, the communication manager 820 is capable of, configured to, or operable to support components for generating an FD representation of a reference signal based on the FMCW-based DFT. The communication manager 820 is capable of, configured to, or operable to support components for scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device. The communication manager 820 is capable of, configured to, or operable to support components for transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0152] Additionally or alternatively, the communication manager 820 may support wireless communication at a second wireless device according to the examples disclosed herein. For example, the communication manager 820 may be capable of, configured to, or operated to support components for: receiving at least a portion of a broadband signal for channel estimation of a channel associated with the first wireless device and based on FMCW. The communication manager 820 may be capable of, configured to, or operated to support components for: descrambling that portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device. The communication manager 820 may be capable of, configured to, or operated to support components for: transmitting signaling via the channel based on the channel estimation of the channel, according to the descrambled portion of the broadband signal.

[0153] By including or configuring a communication manager 820 according to an example as described herein, device 805 can support techniques for improving communication reliability, reducing latency, improving and reducing user experience associated with processing, reducing power consumption (e.g., by using a narrowband baseband chain to measure a broadband channel), utilizing communication resources more efficiently, improving coordination between devices, extending battery life, and improving the utilization of processing power.

[0154] In some examples, the communication manager 820 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using a transceiver 815, one or more antennas 825, or any combination thereof, or otherwise cooperating with them. For example, the communication manager 820 may be configured to receive or transmit messages or other signaling as described herein via the transceiver 815. Although the communication manager 820 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 820 may be supported by or performed by at least one processor 840, at least one memory 830, code 835, or any combination thereof. For example, code 835 may include instructions that can be executed by at least one processor 840 to cause device 805 to perform various aspects of FD scrambling FMCW signaling as described herein, or at least one processor 840 and at least one memory 830 may be otherwise configured to perform or support such operations individually or jointly.

[0155] Figure 9 A diagram of a system 900 including device 905 supporting FD scrambling FMCW signaling is shown according to one or more aspects of this disclosure. Device 905 may be an example of device 505, device 605, or network entity 105 as described herein, or may include components thereof. Device 905 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, and such communication may include communication via one or more wired interfaces, one or more wireless interfaces, or any combination thereof. Device 905 may include components that support output and enable communication, such as a communication manager 920, a transceiver 910, an antenna 915, at least one memory 925, code 930, and at least one processor 935. These components may communicate electronically or otherwise (e.g., operative ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 940).

[0156] As described herein, transceiver 910 may support bidirectional communication via a wired link, a wireless link, or both. In some examples, transceiver 910 may include a wired transceiver and be capable of bidirectional communication with another wired transceiver. Additionally or alternatively, in some examples, transceiver 910 may include a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. In some examples, device 905 may include one or more antennas 915 that are capable of (e.g., concurrently) transmitting or receiving wireless transmissions. Transceiver 910 may also include a modem for modulating signals to provide modulated signals for transmission (e.g., via one or more antennas 915, via a wired transmitter), for receiving modulated signals (e.g., from one or more antennas 915, from a wired receiver), and for demodulating signals. In some embodiments, transceiver 910 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 915 configured to support various receive or acquire operations, or one or more interfaces coupled to one or more antennas 915 configured to support various transmit or output operations, or combinations thereof. In some embodiments, transceiver 910 may include one or more processors or one or more memory components or be configured to couple to said one or more processors or one or more memory components, said one or more processors or memory components being operable to perform or support operations based on received or acquired information or signals, or to generate information or other signals for transmission or other output, or any combination thereof. In some embodiments, transceiver 910, or transceiver 910 and one or more antennas 915, or transceiver 910 and one or more antennas 915 and one or more processors or one or more memory components (e.g., at least one processor 935, at least one memory 925, or both) may be included in a chip or chip assembly mounted in device 905. In some examples, transceiver 910 may be able to operate to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0157] At least one memory 925 may include RAM, ROM, or any combination thereof. At least one memory 925 may store computer-readable, computer-executable code 930 including instructions that, when executed by one or more of at least one processor 935, cause device 905 to perform the various functions described herein. Code 930 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 930 may not be directly executable by one of the at least one processor 935, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, at least one memory 925 may also include a BIOS, among other things, that controls basic hardware or software operation, such as interaction with peripheral components or devices. In some examples, at least one processor 935 may include multiple processors, and at least one memory 925 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein (e.g., as part of a processing system).

[0158] At least one processor 935 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, ASICs, CPUs, FPGAs, microcontrollers, programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any combination thereof). In some cases, at least one processor 935 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into one or more of the at least one processor 935. At least one processor 935 may be configured to execute computer-readable instructions stored in memory (e.g., one or more memories in at least one memory 925) to cause device 905 to perform various functions (e.g., functions or tasks supporting FD scrambling FMCW signaling). For example, device 905 or components of device 905 may include at least one processor 935 and at least one memory 925 coupled to one or more of the at least one processor 935, wherein at least one processor 935 and at least one memory 925 are configured to perform the various functions described herein. At least one processor 935 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that can (e.g., by executing code 930) host functions for performing the functions of device 905. At least one processor 935 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in device 905 (such as within one or more memories of at least one memory 925).

[0159] In some examples, at least one processor 935 may include multiple processors, and at least one memory 925 may include multiple memories. One or more of the multiple processors may be coupled to one or more of the multiple memories, which may be configured individually or collectively to perform the various functions described herein. In some examples, at least one processor 935 may be a component of a processing system, which may refer to a system of machines (such as a series of machines), circuitry (including, for example, one or both of processor circuitry (which may include at least one processor 935) and memory circuitry (which may include at least one memory 925)) or components that receive or receive input and process the input to produce, generate, or obtain a set of outputs. The processing system may be configured to perform one or more of the functions described herein. Thus, at least one processor 935 or a processing system including at least one processor 935 may be configured, capable of being configured, or operable to cause device 905 to perform one or more of the functions described herein. Furthermore, as described herein, “configured to,” “capable of being configured,” and “operable to” are used interchangeably and may be associated with the ability to perform one or more of the functions described herein when executing code stored in at least one memory 925 or otherwise.

[0160] In some examples, bus 940 may support communication at protocol layers of the protocol stack (e.g., within a protocol layer). In some examples, bus 940 may support communication associated with logical channels of the protocol stack (e.g., between protocol layers of the protocol stack), which may include communication performed within components of device 905, or communication performed between different components of device 905 that are co-addressable or may be located in different locations (e.g., where device 905 may refer to a system in which one or more of communication manager 920, transceiver 910, at least one memory 925, code 930 and at least one processor 935 may be located in one component of different components or partitioned between different components).

[0161] In some examples, the communication manager 920 can manage (e.g., via one or more wired or wireless backhaul links) various aspects of communication with the core network 130. For example, the communication manager 920 can manage the delivery of data communications by client devices, such as one or more UEs 115. In some examples, the communication manager 920 can manage communication with other network entities 105 and may include a controller or scheduler for cooperating with other network entities 105 to control communication with UE 115. In some examples, the communication manager 920 may support the X2 interface within LTE / LTE-A wireless communication network technology to provide communication between network entities 105.

[0162] The communication manager 920 can support wireless communication at a first wireless device according to the examples disclosed herein. For example, the communication manager 920 is capable of, configured to, or operable to support components for generating an FD representation of a reference signal based on the FMCW-based DFT. The communication manager 920 is capable of, configured to, or operable to support components for scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device. The communication manager 920 is capable of, configured to, or operable to support components for transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device.

[0163] Additionally or alternatively, the communication manager 920 may support wireless communication at a second wireless device according to the examples disclosed herein. For example, the communication manager 920 may be capable of, configured to, or operated to support components for: receiving at least a portion of a broadband signal for channel estimation, the broadband signal being associated with the first wireless device and based on FMCW. The communication manager 920 may be capable of, configured to, or operated to support components for: descrambling that portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device. The communication manager 920 may be capable of, configured to, or operated to support components for: transmitting signaling via the channel based on the channel estimation of the channel, according to the descrambled portion of the broadband signal.

[0164] By including or configuring a communication manager 920 according to an example as described herein, device 905 can support techniques for improving communication reliability, reducing latency, improving and reducing user experience associated with processing, reducing power consumption (e.g., by using a narrowband baseband chain to measure a broadband channel), utilizing communication resources more efficiently, improving coordination between devices, extending battery life, and improving the utilization of processing power.

[0165] In some examples, the communication manager 920 may be configured to use or otherwise coordinate with the transceiver 910, one or more antennas 915 (e.g., where applicable), or any combination thereof to perform various operations (e.g., receiving, acquiring, monitoring, outputting, transmitting). For example, the communication manager 920 may be configured to receive or transmit messages or other signaling as described herein via the transceiver 910. Although the communication manager 920 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 920 may be supported or performed by the transceiver 910, one or more processors in at least one processor 935, one or more memories in at least one memory 925, code 930, or any combination thereof (e.g., by a processing system including at least a portion of at least one processor 935, at least one memory 925, code 930, or any combination thereof). For example, code 930 may include instructions that can be executed by one or more processors of at least one processor 935 to cause device 905 to perform various aspects of FD scrambling FMCW signaling as described herein, or at least one processor 935 and at least one memory 925 may be otherwise configured to perform or support such operations individually or jointly.

[0166] Figure 10 A flowchart illustrating a method 1000 for supporting FD scrambling FMCW signaling according to various aspects of this disclosure is shown. Operation of method 1000 may be implemented by a first wireless device (such as a UE or network entity or a component of a UE or network entity as described herein). For example, operation of method 1000 may be performed by, as referenced... Figures 1 to 9 The described UE 115 or network entity 105 performs this function. In some examples, the UE or network entity may execute a set of instructions to control the functional elements of the UE or network entity to perform the described function. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform aspects of the described function.

[0167] At 1005, the method may include generating an FD representation of the reference signal based on an FMCW-based DFT. The operation of block 1005 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1005 may be derived from, as in the reference... Figure 7The described FD FMCW generation component 725 performs this operation. In some cases, components for performing the operation 1005 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1005 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0168] At 1010, the method may include: scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device. The operation of block 1010 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1010 may be determined by, as in the reference... Figure 7 The described FD scrambling component 730 is used to perform this operation. In some cases, components for performing the operation 1010 at UE115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1010 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0169] At 1015, the method may include transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device. The operation of block 1015 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1015 may be determined by, as referenced... Figure 7The described broadband signaling component 735 performs the operation. In some cases, components for performing the operation 1015 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1015 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0170] Figure 11 A flowchart illustrating a method 1100 for supporting FD scrambling FMCW signaling according to various aspects of this disclosure is shown. Operation of method 1100 may be implemented by a first wireless device (such as a UE or network entity or a component of a UE or network entity as described herein). For example, operation of method 1100 may be performed by, as referenced... Figures 1 to 9 The described UE 115 or network entity 105 performs this function. In some examples, the UE or network entity may execute a set of instructions to control the functional elements of the UE or network entity to perform the described function. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform aspects of the described function.

[0171] At 1105, the method may include sending configuration signaling indicating an FD scrambling sequence corresponding to the first wireless device. Operation of block 1105 may be performed according to examples as disclosed herein. In some examples, aspects of operation of 1105 may be provided by reference to [reference needed]. Figure 7 The sequence configuration signaling component 755 is described to perform the operation. In some cases, components for performing the operation 1105 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1105 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0172] At 1110, the method may include generating an FD representation of the reference signal based on an FMCW-based DFT. The operation of block 1110 may be performed according to examples disclosed herein. In some examples, aspects of the operation of 1110 may be derived from, as in the reference... Figure 7 The described FD FMCW generation component 725 performs this operation. In some cases, components for performing the operation 1110 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1110 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0173] At 1115, the method may include: scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device and indicated by configuration signaling. The operation of block 1115 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1115 may be determined by, as in reference... Figure 7 The described FD scrambling component 730 is used to perform this operation. In some cases, components for performing the operation of 1115 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation of 1115 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0174] At 1120, the method may include transmitting a wideband signal based on the scrambled FD representation of the reference signal for channel estimation at a second wireless device. The operation of block 1120 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1120 may be determined by reference... Figure 7The described broadband signaling component 735 performs the operation. In some cases, components for performing operation 1120 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing operation 1120 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0175] Figure 12 A flowchart illustrating a method 1200 for supporting FD scrambling FMCW signaling according to various aspects of this disclosure is shown. Operation of method 1200 may be implemented by a second wireless device (such as a UE or network entity or a component of a UE or network entity as described herein). For example, operation of method 1200 may be implemented by, as referenced... Figures 1 to 9 The described UE 115 or network entity 105 performs this function. In some examples, the UE or network entity may execute a set of instructions to control the functional elements of the UE or network entity to perform the described function. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform aspects of the described function.

[0176] At 1205, the method may include: receiving at least a portion of a broadband signal for channel estimation of a channel, the broadband signal being associated with a first wireless device and based on FMCW. Operation of block 1205 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1205 may be provided by reference to... Figure 7 The described broadband signal receiving component 740 performs this operation. In some cases, components for performing the operation 1205 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1205 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0177] At 1210, the method may include: descrambling that portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device. The operation of block 1210 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1210 may be provided by reference to [reference needed]. Figure 7 The described FD descrambling component 745 performs this operation. In some cases, components for performing the operation 1210 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1210 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0178] At 1215, the method may include: transmitting signaling via the channel based on a descrambled portion of the broadband signal and a channel estimate of the channel. The operation of block 1215 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1215 may be derived from references... Figure 7 The described channel signaling component 750 performs the operation. In some cases, components for performing the operation 1215 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1215 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0179] Figure 13 A flowchart illustrating a method 1300 supporting FD scrambling FMCW signaling according to various aspects of this disclosure is shown. Operation of method 1300 may be implemented by a second wireless device (such as a UE or network entity or a component of a UE or network entity as described herein). For example, operation of method 1300 may be performed by, as referenced... Figures 1 to 9The described UE 115 or network entity 105 performs this function. In some examples, the UE or network entity may execute a set of instructions to control the functional elements of the UE or network entity to perform the described function. Additionally or alternatively, the UE or network entity may use dedicated hardware to perform aspects of the described function.

[0180] At 1305, the method may include: receiving at least a portion of a broadband signal for channel estimation of a channel, the broadband signal being associated with a first wireless device and based on FMCW. Operation of block 1305 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1305 may be provided by reference to... Figure 7 The described broadband signal receiving component 740 performs this operation. In some cases, components for performing the operation 1305 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1305 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0181] At 1310, the method may include: descrambling that portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device. The operation of block 1310 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1310 may be provided by reference to [reference needed]. Figure 7 The described FD descrambling component 745 performs this operation. In some cases, components for performing the operation 1310 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1310 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0182] At 1315, the method may include: transmitting signaling via the channel based on a descrambled portion of the broadband signal and a channel estimate of the channel. The operation of block 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1315 may be derived from references... Figure 7 The described channel signaling component 750 performs the operation. In some cases, components for performing the operation 1315 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1315 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0183] At 1320, the method may include: determining the ID of a first wireless device associated with the broadband signal based on descrambling that portion of the broadband signal using an FD scrambling sequence. The operation of block 1320 may be performed according to examples as disclosed herein. In some examples, aspects of the operation of 1320 may be derived from references... Figure 7 The described identifier component 770 is used to perform this operation. In some cases, components for performing the operation 1320 at UE 115 may include, for example, one or more antennas 825, transceiver 815, communication manager 820, one or more memories 830 (e.g., including code 835), one or more processors 840, one or more buses 845, or any combination thereof. Additionally or alternatively, components for performing the operation 1320 at network entity 105 may include, for example, one or more antennas 915, transceiver 910, communication manager 920, one or more memories 925 (e.g., including code 930), one or more processors 935, one or more buses 940, or any combination thereof.

[0184] The following provides an overview of the various aspects of this disclosure: Aspect 1: A method for performing wireless communication at a first wireless device, the method comprising: generating an FD representation of a reference signal based at least in part on a DFT of an FMCW; scrambling the FD representation of the reference signal using an FD scrambling sequence corresponding to the first wireless device; and transmitting a wideband signal based at least in part on the scrambled FD representation of the reference signal for channel estimation of a channel at a second wireless device.

[0185] Aspect 2: According to the method of aspect 1, the method further includes: transmitting signaling via the channel based on the channel estimate of the channel, at least in part based on the scrambled FD representation of the reference signal.

[0186] Aspect 3: The method according to any one of Aspect 1 or 2, the method further comprising: sending configuration signaling, the configuration signaling indicating the FD scrambling sequence corresponding to the first wireless device.

[0187] Aspect 4: According to the method of aspect 3, the configuration signaling includes RRC signals, MAC-CE signals, DCI signals, or any combination thereof.

[0188] Aspect 5: The method according to any one of Aspects 1 or 2, the method further comprising: sending an indication for determining the FD scrambling sequence based at least in part on a cell ID associated with the first radio device, a UE ID associated with the first radio device, or any combination thereof.

[0189] Aspect 6: The method according to any one of Aspects 1 to 5, wherein the length of the FD scrambling sequence is at least partially based on the capability of the second wireless device.

[0190] Aspect 7: According to the method of aspect 6, the capability of the second wireless device is at least partially based on the baseband bandwidth processing capability, analog reception capability, digital reception capability, or any combination thereof of the second wireless device.

[0191] Aspect 8: The method according to any one of Aspects 1 to 7, wherein scrambling the FD representation of the reference signal comprises: scrambling a plurality of consecutive frequency resource sets of the FD representation of the reference signal at least in part based on the length of the FD scrambling sequence, wherein one of the plurality of consecutive frequency resource sets is scrambled using a corresponding bit of the FD scrambling sequence.

[0192] Aspect 9: The method according to any one of Aspects 1 to 8, wherein transmitting the broadband signal comprises: transmitting the broadband signal via a digital transceiver or an analog transceiver.

[0193] Aspect 10: The method according to any one of Aspects 1 to 9, the method further comprising: determining the FD scrambling sequence based at least in part on the digital modulation scheme of the first wireless device, the cell ID associated with the first wireless device, the UE ID associated with the first wireless device, or any combination thereof.

[0194] Aspect 11: A method for performing wireless communication at a second wireless device, the method comprising: receiving at least a portion of a broadband signal for channel estimation of a channel, the broadband signal being associated with a first wireless device and at least partially based on FMCW; descrambling the portion of the broadband signal using an FD scrambling sequence corresponding to the first wireless device; and transmitting signaling via the channel based at least partially on the descrambled portion of the broadband signal, according to the channel estimation of the channel.

[0195] Aspect 12: The method according to aspect 11, the method further comprising: determining the ID of the first wireless device associated with the broadband signal based at least in part on descrambling the portion of the broadband signal using the FD scrambling sequence.

[0196] Aspect 13: The method according to aspect 12, the method further comprising: performing interference cancellation of additional signaling associated with a third wireless device based at least in part on the ID of the first wireless device associated with the broadband signal.

[0197] Aspect 14: The method according to any one of aspects 11 to 13, the method further comprising: receiving configuration signaling indicating the FD scrambling sequence.

[0198] Aspect 15: The method according to aspect 14, wherein the configuration signaling includes RRC signals, MAC-CE signals, DCI signals, or any combination thereof.

[0199] Aspect 16: The method according to any one of Aspects 11 to 13, the method further comprising: receiving an indication for determining the FD scrambling sequence based at least in part on a cell ID associated with the first radio device, a UE ID associated with the first radio device, or any combination thereof; and determining the FD scrambling sequence based at least in part on the indication.

[0200] Aspect 17: The method according to any one of Aspects 11 to 16, wherein the length of the FD scrambling sequence is at least partially based on the capability of the second wireless device.

[0201] Aspect 18: According to the method of aspect 17, the capability of the second wireless device is at least partially based on the baseband bandwidth processing capability, analog reception capability, digital reception capability, or any combination thereof of the second wireless device.

[0202] Aspect 19: The method according to any one of Aspects 11 to 18, wherein descrambling the portion of the broadband signal comprises: descrambling a plurality of consecutive frequency resource sets corresponding to the portion of the broadband signal at least in part based on the length of the FD scrambling sequence, wherein one of the plurality of consecutive frequency resource sets is descrambled using a corresponding bit of the FD scrambling sequence.

[0203] Aspect 20: The method according to any one of aspects 11 to 19, wherein receiving at least a portion of the broadband signal comprises: receiving at least a portion of the broadband signal via a digital transceiver or an analog transceiver.

[0204] Aspect 21: The method according to any one of aspects 11 to 20, wherein descrambling the portion of the broadband signal comprises: generating a local FMCW; and descrambling the portion of the broadband signal at least in part based on combining the local FMCW with the FMCW corresponding to the broadband signal.

[0205] Aspect 22: A first wireless device comprising: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories and capable of operating individually or jointly to execute the code, thereby enabling the first wireless device to perform the method according to any one of aspects 1 to 10.

[0206] Aspect 23: An apparatus for a first wireless device for wireless communication, the apparatus comprising at least one component for performing the method according to any one of aspects 1 to 10.

[0207] Aspect 24: A non-transitory computer-readable medium storing code for wireless communication, said code comprising instructions executable by one or more processors to perform the method according to any one of aspects 1 to 10.

[0208] Aspect 25: A second wireless device comprising: one or more memories storing processor-executable code; and one or more processors coupled to the one or more memories and capable of operating individually or jointly to execute the code, thereby enabling the second wireless device to perform the method according to any one of aspects 11 to 21.

[0209] Aspect 26: An apparatus for a second wireless device for wireless communication, the apparatus comprising at least one component for performing the method according to any one of aspects 11 to 21.

[0210] Aspect 27: A non-transitory computer-readable medium storing code for wireless communication, said code including instructions executable by one or more processors to perform the method according to any one of aspects 11 to 21.

[0211] It should be noted that the methods described herein describe possible specific implementations, and the operations and steps can be rearranged or otherwise modified, and other specific implementations are also possible. Furthermore, aspects from two or more of these methods can be combined.

[0212] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein are also applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described are applicable to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0213] The information and signals described herein can be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or optical particles, or any combination thereof.

[0214] The various exemplary blocks and components described herein can be implemented or performed using a general-purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic unit, discrete hardware component, or any combination thereof, designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but in alternative embodiments, a processor may be any processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration). Any function or operation described herein that can be performed by a processor may be performed by multiple processors capable of performing the described functions or operations individually or jointly.

[0215] The functions described herein can be implemented using hardware, software executed by a processor, firmware, or any combination thereof. When implemented using software executed by a processor, the functions can be stored as one or more instructions or code on a computer-readable medium or transmitted using one or more instructions or code on a computer-readable medium. Other examples and specific implementations are within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein can be implemented using software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features implementing the functions can also be physically located in various locations, including portions distributed such that the functions are implemented in different physical locations.

[0216] Computer-readable media includes both non-transitory computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transitory storage media can be any available medium accessible by a general-purpose or special-purpose computer. By way of example, and not limitation, non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compressed optical disc (CD) ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other non-transitory medium that can be used to carry or store desired program code components in the form of instructions or data structures, and accessible by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. Furthermore, any connection is appropriately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included within the definition of computer-readable media. As used herein, disks and optical discs include CDs, laser discs, optical discs, digital multifunction discs (DVDs), floppy disks, and Blu-ray discs. Disks can magnetically reproduce data, and optical discs can optically reproduce data using lasers. Combinations of the above are also included within the scope of computer-readable media. Any function or operation described herein that can be performed by memory can be performed by multiple memories capable of performing the described function or operation individually or jointly.

[0217] As used herein, the word "or" in a list of items (e.g., a list of items accompanied by phrases such as "at least one of" or "one or more of") in the claims indicates an inclusive list, such that a list of at least one of, for example, A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Furthermore, as used herein, the phrase "based on" should not be construed as a reference to a closed set of conditions. For example, an example step described as "based on condition A" could be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "at least partially based on".

[0218] As used herein, including in claims, the article “a” preceding a noun is open-ended and is understood to refer to “at least one” or “one or more” of those nouns. Therefore, the terms “a,” “at least one,” “one or more,” and “at least one of one or more” are interchangeable. For example, where a claim enumerates “components” performing one or more functions, each of the individual functions may be performed by a single component or by any combination of multiple components. Thus, the term “component” having a characteristic or performing a function may refer to “at least one of one or more components” having a particular characteristic or performing a particular function. Subsequent references to a component introduced with the article “a” using the terms “the” or “the” can refer to any or all of the one or more components. For example, a component introduced with the article “a” can be understood to mean “one or more components,” and subsequent reference to “the component” in a claim can be understood as equivalent to referring to “at least one of the one or more components.” Similarly, subsequent references to a component introduced with the terms “the” or “the” as “one or more components” can refer to any or all of the one or more components. For example, reference to "the one or more components" in the subsequent claims can be understood as equivalent to reference to "at least one of the one or more components".

[0219] The term "determine" encompasses a wide range of actions, and therefore, "determine" can include calculation, computation, processing, derivation, investigation, searching (such as by searching in a table, database, or other data structure), ascertainment, and similar actions. Furthermore, "determine" can include receiving (e.g., receiving information), accessing (e.g., accessing data stored in memory), and so on. Moreover, "determine" can include parsing, acquiring, selecting, choosing, building, and other similar actions.

[0220] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, various components of the same type can be distinguished by adding a dash after the reference numeral and a second reference numeral to differentiate them. If only the first reference numeral is used in the description, the description can be applied to any of the similar components having the same first reference numeral, regardless of the second or other subsequent reference numerals.

[0221] The description herein, illustrated with reference to the accompanying drawings, describes an example configuration and does not represent all achievable examples or those within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration," not "preferred" or "advantageous over other examples." The detailed description includes specific details used to provide an understanding of the described techniques. However, these techniques can be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concept of the described examples.

[0222] The description herein is provided to enable those skilled in the art to implement or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A first wireless device, the first wireless device comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, said one or more processors coupled to said one or more memories and capable of operating individually or jointly to execute said code to enable the first wireless device: The frequency domain representation of the reference signal is generated, at least in part, based on the discrete Fourier transform of the frequency-modulated continuous waveform. The frequency domain representation of the reference signal is scrambled using a frequency domain scrambling sequence corresponding to the first wireless device; as well as A broadband signal is transmitted, at least in part, based on the scrambled frequency domain representation of the reference signal, for channel estimation at a second wireless device.

2. The first wireless device of claim 1, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the first wireless device to: Signaling is transmitted via the channel based at least in part on the scrambled frequency domain representation of the reference signal, according to the channel estimate of the channel.

3. The first wireless device of claim 1, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the first wireless device to: Send configuration signaling, the configuration signaling indicating the frequency domain scrambling sequence corresponding to the first wireless device.

4. The first wireless device according to claim 3, wherein the configuration signaling includes radio resource control signals, media access control-control element signals, downlink control information signals, or any combination thereof.

5. The first wireless device of claim 1, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the first wireless device to: Send an indication for determining the frequency domain scrambling sequence based at least in part on a cell identifier associated with the first radio device, a user equipment (UE) identifier associated with the first radio device, or any combination thereof.

6. The first wireless device of claim 1, wherein the length of the frequency domain scrambling sequence is at least partially based on the capabilities of the second wireless device.

7. The first wireless device of claim 6, wherein the capability of the second wireless device is at least in part based on the baseband bandwidth processing capability, analog reception capability, digital reception capability, or any combination thereof of the second wireless device.

8. The first wireless device according to claim 1, wherein, In order to scramble the frequency domain representation of the reference signal, the one or more processors can operate individually or jointly to execute the code to enable the first wireless device to: The frequency domain representation of the reference signal is scrambled at least in part based on the length of the frequency domain scrambling sequence, wherein one of the multiple consecutive frequency resource sets is scrambled using the corresponding bit of the frequency domain scrambling sequence.

9. The first wireless device according to claim 1, wherein, In order to transmit the broadband signal, the one or more processors can operate individually or jointly to execute the code to enable the first wireless device to: The broadband signal is transmitted via a digital transceiver or an analog transceiver.

10. The first wireless device of claim 1, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the first wireless device to: The frequency domain scrambling sequence is determined at least in part based on the digital modulation scheme of the first wireless device, the cell identifier associated with the first wireless device, the user equipment (UE) identifier associated with the first wireless device, or any combination thereof.

11. A second wireless device, the second wireless device comprising: One or more memories, wherein the one or more memories store processor-executable code; and One or more processors, coupled to the one or more memories and capable of operating individually or jointly to execute the code to enable the second wireless device: At least a portion of a broadband signal is received for channel estimation of the channel, the broadband signal being associated with a first wireless device and being at least partially based on a frequency-modulated continuous waveform; The portion of the broadband signal is descrambled using a frequency domain scrambling sequence corresponding to the first wireless device; as well as Signaling is transmitted via the channel based at least in part on a descrambled portion of the broadband signal, according to the channel estimate of the channel.

12. The second wireless device of claim 11, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the second wireless device to: The identifier of the first wireless device associated with the broadband signal is determined, at least in part, based on using the frequency domain scrambling sequence to descramble a portion of the broadband signal.

13. The second wireless device of claim 12, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the second wireless device to: Interference cancellation of additional signaling associated with a third wireless device is performed, at least in part, based on the identifier of the first wireless device associated with the broadband signal.

14. The second wireless device of claim 11, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the second wireless device to: Receive configuration signaling indicating the frequency domain scrambling sequence.

15. The second wireless device of claim 14, wherein the configuration signaling includes radio resource control signals, media access control-control element signals, downlink control information signals, or any combination thereof.

16. The second wireless device of claim 11, wherein the one or more processors are further capable of operating individually or jointly to execute the code to cause the second wireless device to: Receive an indication for determining the frequency domain scrambling sequence based at least in part on a cell identifier associated with the first radio device, a user equipment (UE) identifier associated with the first radio device, or any combination thereof; and The frequency domain scrambling sequence is determined at least in part based on the indication.

17. The second wireless device of claim 11, wherein the length of the frequency domain scrambling sequence is at least partially based on the capabilities of the second wireless device.

18. The second wireless device of claim 17, wherein the capability of the second wireless device is based at least in part on the baseband bandwidth processing capability, analog reception capability, digital reception capability, or any combination thereof of the second wireless device.

19. The second wireless device according to claim 11, wherein, In order to descramble the portion of the broadband signal, the one or more processors can operate individually or jointly to execute the code to enable the second wireless device to: The multiple consecutive frequency resource sets corresponding to the portion of the broadband signal are descrambled at least in part based on the length of the frequency domain scrambling sequence, wherein one of the multiple consecutive frequency resource sets is descrambled using the corresponding bit of the frequency domain scrambling sequence.

20. The second wireless device according to claim 11, wherein, In order to receive at least a portion of the broadband signal, the one or more processors are capable of operating individually or jointly to execute the code to enable the second wireless device to: At least a portion of the broadband signal is received via a digital or analog transceiver.

21. The second wireless device according to claim 11, wherein, In order to descramble the portion of the broadband signal, the one or more processors can operate individually or jointly to execute the code to enable the second wireless device to: Generate a local frequency-modulated continuous waveform; as well as The descrambling of a portion of the broadband signal is based at least in part on combining the local frequency-modulated continuous waveform with the frequency-modulated continuous waveform corresponding to the broadband signal.

22. A method for performing wireless communication at a first wireless device, the method comprising: The frequency domain representation of the reference signal is generated, at least in part, based on the discrete Fourier transform of the frequency-modulated continuous waveform. The frequency domain representation of the reference signal is scrambled using a frequency domain scrambling sequence corresponding to the first wireless device; as well as A broadband signal is transmitted, at least in part, based on the scrambled frequency domain representation of the reference signal, for channel estimation at a second wireless device.

23. The method according to claim 22, further comprising: Send configuration signaling, the configuration signaling indicating the frequency domain scrambling sequence corresponding to the first wireless device.

24. The method according to claim 22, further comprising: Send an indication for determining the frequency domain scrambling sequence based at least in part on a cell identifier associated with the first radio device, a user equipment (UE) identifier associated with the first radio device, or any combination thereof.

25. The method of claim 22, wherein scrambling the frequency domain representation of the reference signal comprises: The frequency domain representation of the reference signal is scrambled at least in part based on the length of the frequency domain scrambling sequence, wherein one of the multiple consecutive frequency resource sets is scrambled using the corresponding bit of the frequency domain scrambling sequence.

26. The method according to claim 22, further comprising: The frequency domain scrambling sequence is determined at least in part based on the digital modulation scheme of the first wireless device, the cell identifier associated with the first wireless device, the user equipment (UE) identifier associated with the first wireless device, or any combination thereof.

27. A method for wireless communication at a second wireless device, the method comprising: At least a portion of a broadband signal is received for channel estimation of the channel, the broadband signal being associated with a first wireless device and being at least partially based on a frequency-modulated continuous waveform; The portion of the broadband signal is descrambled using a frequency domain scrambling sequence corresponding to the first wireless device; as well as Signaling is transmitted via the channel based at least in part on a descrambled portion of the broadband signal, according to the channel estimate of the channel.

28. The method of claim 27, further comprising: The identifier of the first wireless device associated with the broadband signal is determined, at least in part, based on using the frequency domain scrambling sequence to descramble a portion of the broadband signal.

29. The method of claim 27, further comprising: Receive an indication for determining the frequency domain scrambling sequence based at least in part on a cell identifier associated with the first radio device, a user equipment (UE) identifier associated with the first radio device, or any combination thereof; and The frequency domain scrambling sequence is determined at least in part based on the indication.

30. The method of claim 27, wherein descrambling the portion of the broadband signal comprises: The multiple consecutive frequency resource sets corresponding to the portion of the broadband signal are descrambled at least in part based on the length of the frequency domain scrambling sequence, wherein one of the multiple consecutive frequency resource sets is descrambled using the corresponding bit of the frequency domain scrambling sequence.

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