Method and apparatus for sidelink beam management

Abstract

The method includes configuring, by a first user equipment (UE), one or more carriers in a first frequency range, where at least one of the one or more carriers includes an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range; and transmitting the configured one or more carriers in the first frequency range to the second UE, such that the second UE can obtain the indication.

Description

[Technical Field]

[0001] Cross-reference to related patent applications This application is incorporated herein by reference in its entirety, and is incorporated herein by reference in its entirety. This application claims priority to U.S. Provisional Application No. 63 / 377,428, entitled "METHOD SYSTEM FOR IMPROVING PERFORMANCE AND OPERATION."

[0002] Apparatus and methods consistent with the present disclosure relate generally to communications, and more particularly to methods, systems, and devices for sidelink beam management in sidelink communications. [Background technology]

[0003] Beam-based communications generally require beam alignment. For example, in the case of beam-based sidelink communications, a transmitter (Tx) beam from a user equipment (UE) needs to be aligned with a receiver (Rx) beam from another UE. In another example, beam-based downlink / uplink communications requires alignment of a beam from a base station with a beam from a UE. Beam alignment typically involves beam searching to find the best beam. For example, a UE communicating with a base station (typically at a fixed location) may receive a reference signal from the base station and detect the best beam based on measurements of the reference signal. However, in sidelink communications, it is difficult for a UE to know in advance all relevant UEs that provide relevant signals, especially when many moving UEs are in the vicinity. This means that a UE needs to scan or search for all possible reference signals in the vicinity, which may consume a lot of UE energy and increase operational overhead. An improved system and method for beam management for beam-based sidelink communications is needed. Summary of the Invention

[0004] According to some embodiments of the present disclosure, a first UE for providing sidelink beam management information is provided, the first UE including: a memory that stores instructions; and a processor configured to execute the instructions stored in the memory to configure one or more carriers in a first frequency range, at least one of the one or more carriers including an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range, and to transmit the configured one or more carriers in the first frequency range to a second UE, such that the second UE can obtain the indication.

[0005] According to some embodiments of the present disclosure, a second UE for receiving sidelink beam management information is provided, the second UE including: a memory that stores instructions; and a processor configured to execute the instructions stored in the memory to receive from the first UE one or more carriers in a first frequency range, where at least one of the one or more carriers includes an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range, identify sidelink beam management information associated with the one or more beams in the second frequency range based on the indication, and adjust sidelink communications associated with the one or more beams in the second frequency range based on the sidelink beam management information.

[0006] According to some embodiments of the present disclosure, there is provided a method for providing sidelink beam management information, the method including: transmitting, by a first UE, one or more sidelink beams in a first frequency range; configuring carriers in the first frequency range, where at least one of the one or more carriers includes an indication indicative of sidelink beam management information associated with one or more beams in the second frequency range; and transmitting the configured one or more carriers in the first frequency range to the second UE to enable the second UE to obtain the indication.

[0007] According to some embodiments of the present disclosure, there is provided a method for receiving sidelink beam management information, the method including: receiving, by a second UE, one or more carriers in a first frequency range from a first UE, where at least one of the one or more carriers includes an indication of sidelink beam management information associated with one or more beams in a second frequency range; identifying, by the second UE based on the indication, sidelink beam management information associated with the one or more beams in the second frequency range; and adjusting sidelink communications associated with the one or more beams in the second frequency range based on the sidelink beam management information.

[0008] According to some embodiments of the present disclosure, a non-transitory computer-readable medium storing instructions executable by one or more processors of a first UE in a sidelink communications network to implement a method includes: configuring one or more carriers in a first frequency range, at least one of the one or more carriers including an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range; and transmitting the configured one or more carriers in the first frequency range to the second UE, such that the second UE can obtain the indication.

[0009] According to some embodiments of the present disclosure, a non-transitory computer-readable medium storing instructions executable by one or more processors of a second UE in a sidelink communications network to implement a method is provided, the method including receiving from the first UE one or more carriers in a first frequency range, where at least one of the one or more carriers includes an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range, identifying, based on the indication, sidelink beam management information associated with the one or more beams in the second frequency range, and adjusting, based on the sidelink beam management information, sidelink communications associated with the one or more beams in the second frequency range. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a schematic diagram illustrating a beam alignment procedure between a UE and a base station consistent with some embodiments of the present disclosure. [Figure 2] FIG. 1 is a schematic diagram illustrating a sidelink beam management scheme consistent with some embodiments of the present disclosure. [Figure 3] 1 is a flowchart illustrating a method for providing sidelink beam management information consistent with some embodiments of the present disclosure. [Figure 4] 10 is a flowchart illustrating a method for receiving sidelink beam management information consistent with some embodiments of the present disclosure. [Figure 5] 1 is a block diagram of a UE consistent with some embodiments of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0011] Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which, unless otherwise indicated, like numbers in different drawings represent the same or similar elements. In the following description of the exemplary embodiments, The implementations described do not represent all implementations that may be consistent with the present disclosure. Rather, the implementations described in the following description are merely examples of systems, apparatus, and methods that may be consistent with aspects of the present disclosure, as set forth in the appended claims.

[0012] FIG. 1 is a schematic diagram illustrating a beam alignment procedure between a UE and a base station consistent with some embodiments of the present disclosure. Referring to FIG. 1, a UE communicates with a base station (e.g., a gNB) via a transmit / receive point (TRP) using a high frequency beam (e.g., FR2). In this disclosure, FR2 is defined as two frequency subranges: FR2-1 from 24250 to 52600 MHz and FR2-2 from 52600 to 71000 MHz (including the millimeter-wave spectrum). Alignment of the beam from the base station with the beam from the UE is performed using a four-step procedure. In the first step, the base station transmits probe signals 102, 104, 106, and 108 in different directions using different Tx beams (P-1 in FIG. 1). The probe signals may be synchronization signals (SS) / physical broadcast channel (PBCH) blocks (SSBs) or channel state information reference signals (CSI-RSs). In a second step, the UE provides feedback regarding the best beam (106) from the base station (P-1 in FIG. 1), and the base station transmits signals (1, 2, 3, and 4 in P-2) using the best beam 106 (P-2 in FIG. 1). Signals 1, 2, 3, and 4 in P-2 may be CSI-RS signals. After further refinement using signals 1, 2, 3, and 4, the base station identifies beam 3 (P-3 in FIG. 1) as the best beam. In a third step, the UE transmits probe signals 110, 112, 114, and 116 in different directions using different Tx beam configurations (P-3 in FIG. 1). In a fourth step, the base station provides feedback regarding the best beam (112) from the UE (P-3 in FIG. 1). As shown in P-3, beam 112 from the UE and beam 3 from the base station are aligned. In some embodiments, to facilitate the UE detecting and searching for the best beam based on SSB measurements at initial beam acquisition, the base station may provide SSB-related information and / or configuration via radio resource control (RRC) parameters in a master information block (MIB) or system information block (SIB).

[0013] At least some embodiments of the present disclosure are directed to sidelink beam alignment in sidelink communications. For example, in one embodiment, a beam alignment procedure similar to the aforementioned procedure in FIG. 1 is used for sidelink beam alignment. In sidelink communications, a UE may have one or more nearby peer UEs, which may be interested UEs. The UE may not know the existence of interested peer UEs in advance. The UE may perform a scan and / or search of all possible SSB reference signals and any SSB transmission resources for sidelink FR2 beams to find the best beam for nearby interested UEs. This may cause problems, such as consuming UE energy and lengthening the initial beam acquisition process. In some embodiments, fixing the SSB transmission resources to constant resources known to the UE mitigates the aforementioned problems.

[0014] At least some embodiments of the present disclosure provide enhanced sidelink beam alignment using low frequency band signals to provide beam management information related to a high frequency beam for beam alignment, thereby reducing operational overhead and improving the efficiency of sidelink communications. For example, some embodiments of the present disclosure are directed to sidelink beam alignment in which sidelink transmissions in a low frequency band (e.g., FR1) using an omnidirectional or wide directional antenna provide relevant beam management information for a high frequency band beam (e.g., FR2) to facilitate UE beam searching or tracking. In this disclosure, FR1 is defined as the frequency range from 410 to 7125 MHz (including the sub-6 GHz spectrum). In some embodiments, high frequency sidelink operation utilizes relevant beam management information in the low frequency band. and thus high frequency sidelink operation is non-standalone (NSA) sidelink (SL) operation (e.g., NSA FR2 SL operation).

[0015] FIG. 2 is a schematic diagram illustrating a sidelink beam management scheme consistent with some embodiments of the present disclosure. Referring to FIG. 2 , a sidelink communication system includes a Tx UE and an Rx UE communicating with each other. For example, the Tx UE and the Rx UE may communicate using low-frequency (e.g., FR1) sidelink signals and / or high-frequency (e.g., FR2) sidelink signals. In some embodiments, the low-frequency sidelink signals are based on a first radio access technology (RAT), and the high-frequency sidelink signals are based on a second RAT. The first RAT and the second RAT may be the same or different from each other. In some embodiments, the first RAT is long term evolution (LTE), and the second RAT is new radio (NR). In some embodiments, both the first RAT and the second RAT are NR.

[0016] In some embodiments, at a Tx UE, a low-frequency resource pool is associated with a high-frequency resource pool. For example, as shown in FIG. 2, the Tx UE may configure one or more carriers (F1 carriers) in a first frequency range. The first frequency range may be any low-frequency range (e.g., FR1). The Tx UE may configure one or more carriers (F2 carriers) in a second frequency range such that at least one of the F1 carriers includes an indication indicating sidelink beam management information associated with one or more carriers (F2 carriers) in a second frequency range. The second frequency range may be any high-frequency range (e.g., FR2). As shown in FIG. 2, the F2 carrier may correspond to one or more beams, for example, four beams (B#1 to B#4).

[0017] In some embodiments, the indication of the sidelink beam management information for the second frequency range (e.g., FR2) is an explicit indication. For example, in some embodiments, as shown in FIG. 2, the sidelink beam management information (BM info) related to the F2 carrier is explicitly indicated in the PSCCH or SCI of the sidelink signal sent to the Rx UE on the first frequency (e.g., FR1) via the physical layer. In some embodiments, the indication may be transmitted to the Rx UE via a MAC Control Element (CE) of the Medium Access Control (MAC) layer or higher layer information (e.g., network layer, transport layer, or application layer). In some embodiments, the indication may include one or more identifiers (IDs) of one or more beam reference signals corresponding to beams #1 to #4. For example, the indication included in the PSCCH or SCI and transmitted to the Rx UE on the first frequency (e.g., FR1) may include the IDs (e.g., 1 to 4) of the beam reference signals corresponding to beams #1 to #4. In some embodiments, the indication may further include one or more resources used for transmission of beam reference signals corresponding to beams #1 to #4. The one or more resources may include time and / or frequency resources, such as one or more frames, subframes, slots, channels, subchannels, resource blocks, etc. Upon reception of a sidelink signal transmitted from a Tx UE in a first frequency range (e.g., FR1), the Rx UE may obtain an indication indicative of sidelink beam management information for a second frequency range (e.g., FR2) by decoding a PSCCH or SCI included in the sidelink signal.

[0018] In some embodiments, beam reference signals corresponding to beams #1 through #4 are transmitted from multiple different antennas or multiple different antenna panels of an antenna. In this case, the indication shown in the PSCCH or SCI may include the order of transmission of the beam reference signals corresponding to beams #1 through #4, or the order of the antennas or antenna panels. The order may be ascending or descending. In some embodiments, the PSCCH The indication included in the H or SCI may further include an indication of directional beam transmission support with or without beam tuning capability. This information may be used by the Rx UE to determine feedback information regarding beam management.

[0019] In some embodiments, for initial beam alignment, a full list of beam reference signal IDs and corresponding transmission resources may be indicated for beam management. For example, in some embodiments, a Tx UE may configure the F1 carrier before initial beam alignment. In this case, the indication included in the PSCCH or SCI may include a full list of beam reference signal IDs corresponding to beams #1 through #4 and the corresponding resources (time and / or frequency) used for transmission of the beam reference signals.

[0020] In some embodiments, for beam management after initial beam alignment, only a portion of the full list of beam reference signal IDs (e.g., neighboring beam information) corresponding to beams #1 through #4 may be indicated. For example, in some embodiments, a Tx UE may configure the F1 carrier after initial beam alignment, and the indication included in the PSCCH or SCI may include a partial list of beam reference signal IDs corresponding to beams #1 through #4.

[0021] In some embodiments, due to the ad-hoc nature of sidelink communication, beam management configurations such as beam reference signals and their transmission resources may not be static. In this case, it is possible to select the beam reference signals and transmission resources of the Tx UEs while ensuring that the selected beam reference signals and transmission resources do not interfere with (or compete with) those used or selected by other nearby UEs. The UE may select a beam reference signal and a transmission resource. For example, to mitigate contention, a Tx UE may monitor beam management information indicated by other UEs and avoid transmitting the same beam management information.

[0022] In some embodiments, the F1 carrier may be a plurality of aggregated carriers. In this case, in one embodiment, each of the plurality of carriers may include a different indication indicating different sidelink beam management signal information. In another embodiment, only one or more specific carriers of the plurality of carriers may include one or more indications indicating sidelink beam management information, the one or more specific carriers being configured by the network node or pre-configured in the first UE.

[0023] In some embodiments, the indication indicating sidelink beam management information for the second frequency range (e.g., FR2) may be an implicit indication. For example, the indication may be implicitly indicated by the resources used for sidelink transmission in the first frequency range (e.g., FR1). For example, as shown in FIG. 2, the indication indicating sidelink beam management information (BM info) for the second frequency range is implicitly indicated by the time and / or frequency resources used for sidelink transmission in the first frequency range (e.g., FR1). For example, in one embodiment, as shown in FIG. 2, the time and / or frequency resources used for sidelink transmission in the first frequency range (e.g., FR1) may correspond to a specific indication indicating sidelink beam management information for the second frequency range (e.g., FR2). A mapping table (rule) may be generated based on the correspondence between different points in the frequency and / or time resources and different indications. In this case, based on a mapping table (rule), the Rx UE may derive an indication such as a sidelink beam reference signal ID and its transmission resource from the time and / or frequency resources used for sidelink transmission in the first frequency range. The mapping rule may be configured by a network node that is predefined or preconfigured in the Tx UE and the Rx UE. For example, in one embodiment, the Tx UE and the Rx UE may be configured by a network node that is predefined or preconfigured in the same frequency range. To ensure that the beam management information of the Tx UE and the Rx UE can be derived, the mapping rule is configured by the network node for both the Tx UE and the Rx UE, or The beam management information may be pre-configured in both the UE and the sidelink Tx UE. In some embodiments, the mapping rule may be designed to allow different sidelink Tx UEs using different sets of sidelink resources for sidelink transmissions in the first frequency range to derive different beam management information. For example, the beam reference ID and / or transmission resource information included in different sidelink Tx UEs may be different. In this way, conflicts between beam management configurations used by different nearby UEs may be avoided.

[0024] In some embodiments, a sidelink transmission in a first frequency range (e.g., FR1) may include both implicit and explicit indications. For example, in some embodiments, limited explicit information about UE capabilities (e.g., number of beams, whether beam tuning is supported, and antenna configuration) may be included in the SCI of a sidelink transmission in the first frequency range. In some embodiments, information about UE capabilities (e.g., number of beams, whether beam tuning is supported, and antenna configuration) may be associated with a sidelink resource pool in the first frequency range. For example, different sidelink resource pools in the first frequency range may be configured and associated with sidelink UEs in a second frequency range with different antenna capabilities. In one embodiment, one or more bit indications in a sidelink transmission in a first frequency range (e.g., FR1) may be used to indicate that the Tx UE has the capability to use both the first frequency range (e.g., FR1) and the second frequency range (e.g., FR2) for sidelink communication operations, thereby enabling an implicit indication mechanism for sidelink communication in the second frequency range (e.g., FR2).

[0025] Upon receiving the indication indicating sidelink beam management information for the second frequency range, the Rx UE may adjust sidelink communications associated with the beam in the second frequency range based on the sidelink beam management information. For example, the Rx UE may adjust beam alignment based on the beam management information. The Rx UE may also adjust resources used for transmission based on the beam management information. In this manner, the indication carried in the first frequency range (e.g., FR1) may facilitate beam alignment of the beam in the second frequency range (e.g., FR2), thereby reducing operational overhead in beam alignment.

[0026] The methods described in this disclosure may be applied to any sidelink communication, e.g., LTE or NR or future generation (sixth generation (6G), seventh generation (7G), or any future generation) sidelink communication. The methods described in this disclosure may also be applied to downlink / uplink communication between a base station and a UE. The methods described in this disclosure may also be applied to other systems, e.g., systems conforming to other standards (e.g., Institute of Electrical and Electronics Engineers (IEEE) standards).

[0027] 3 is a flow diagram illustrating a method 300 for providing sidelink beam management information consistent with some embodiments of the present disclosure. This can be implemented by the UE in sidelink communications.

[0028] The method 300 includes step 302 of configuring, by a first UE, one or more carriers in a first frequency range, wherein at least one of the one or more carriers includes an indication of sidelink beam management information associated with one or more beams in a second frequency range. In one embodiment, the first frequency range is FR1 and the second frequency range is FR2. For example, in this embodiment, the first UE (e.g., the Tx UE of FIG. 2) configures 303 one or more carriers in a first frequency range, wherein at least one of the one or more carriers includes an indication of sidelink beam management information associated with one or more beams in a second frequency range. The FR1 carrier(s) may be configured with an indication of the FR1 information. For example, the indication may be an explicit indication or an implicit indication, as described above in connection with FIG. 2. In some embodiments, the indication may be transmitted via at least one of an SCI at the physical layer, a MAC CE at the MAC layer, or higher layer information.

[0029] In some embodiments, the indication may include one or more IDs of one or more beam reference signals corresponding to one or more beams in the second frequency range. In some embodiments, the indication may further include one or more resources used for transmission of the one or more beam reference signals. The one or more resources may include at least one of time resources (e.g., one or more frames, subframes, slots) or frequency resources (e.g., one or more channels, subchannels). The one or more resources may also include time-frequency resources (e.g., one or more resource blocks).

[0030] In some embodiments, the one or more beams may be multiple beams transmitted from multiple different antennas or multiple different antenna panels. In this case, the indication may include an order of transmission of at least one of the multiple beams or multiple antenna panels. The order may be ascending or descending. In some embodiments, the indication may further include an indication of directional beam transmission support with or without beam tuning capability.

[0031] In some embodiments, configuring one or more carriers in the first frequency range may be performed before initial beam alignment. In this case, the indication may include a full list of IDs of one or more beam reference signals and corresponding resources used for transmission of the one or more beam reference signals. In some embodiments, configuring one or more carriers in the first frequency range may be performed after initial beam alignment. In this case, the indication may include a partial list of IDs of one or more beam reference signals.

[0032] In some embodiments, the indication indicative of the sidelink beam management information may be an implicit indication that may be derived from one or more resources used for transmission of one or more carriers based on a mapping rule that may be configured by the network node, pre-configured in the first UE, or pre-defined.

[0033] In some embodiments, the one or more carriers in the first frequency range may be an aggregated plurality of carriers, each of the plurality of carriers including different indications for different sidelink beam management information. In some embodiments, the one or more carriers in the first frequency range may be an aggregated plurality of carriers, each of the plurality of carriers including one or more specific carriers for the sidelink beam management information. The one or more specific carriers may be configured by the network node or pre-configured in the first UE.

[0034] In some embodiments, sidelink communication within a first frequency range is based on a first RAT, and sidelink communication within a second frequency range is based on a second RAT. The first RAT and the second RAT may be the same or different from each other. In some embodiments, the first RAT is LTE and the second RAT is NR. In some embodiments, both the first RAT and the second RAT are NR.

[0035] The method 300 includes transmitting 304 the configured one or more carriers within the first frequency range to a second UE, such that the second UE can obtain the indication. For example, the second UE may be an Rx UE in sidelink communication, such as the Rx UE in FIG. 2 .

[0036] In some embodiments, the second UE may be a plurality of UEs configured to operate under the second frequency range. In some embodiments, the indication is a first indication, and the first UE may further monitor at least one of the plurality of UEs for transmission of at least one second indication indicative of sidelink beam management information. The first indication and the second indication may be identical or different. In response to determining that the first indication and the second indication are identical, the first UE may avoid transmitting the first indication.

[0037] 4 is a flowchart illustrating a method 400 for receiving sidelink beam management information, consistent with some embodiments of the present disclosure. The method 400 may be performed by an Rx UE in sidelink communication, such as the Rx UE of FIG. 2.

[0038] The method 400 includes receiving 402, by a second UE, one or more carriers in a first frequency range from a first UE, where at least one of the one or more carriers includes an indication of sidelink beam management information associated with one or more beams in the second frequency range. For example, the second UE may be an Rx UE in sidelink communication, such as the Rx UE in FIG. 2, and the first UE may be a Tx UE in sidelink communication, such as the Tx UE in FIG. 2.

[0039] In one embodiment, the first frequency range may be FR1 and the second frequency range may be FR2. For example, in this embodiment, a second UE (e.g., an Rx UE in FIG. 2 ) may receive from a first UE (e.g., a Tx UE in FIG. 2 ) one or more FR1 carriers including an indication indicating sidelink beam management information associated with one or more FR2 beams. For example, as described above in connection with FIG. 2 , the indication may be an explicit indication or an implicit indication. In some embodiments, the second UE may receive the indication via at least one of an SCI at the physical layer, a MAC CE at the MAC layer, or higher layer information.

[0040] In some embodiments, the indication may include one or more IDs of one or more beam reference signals corresponding to one or more beams in the second frequency range. In some embodiments, the indication may further include one or more resources used for transmission of the one or more beam reference signals. The one or more resources may include at least one of time resources or frequency resources.

[0041] In some embodiments, the one or more beams are multiple beams transmitted from multiple different antennas or multiple different antenna panels. In this case, the indication may include an order of transmission of at least one of the multiple beams or multiple antenna panels. In some embodiments, the indication may further include an indication of directional beam transmission support with or without beam tuning capability.

[0042] In some embodiments, the indication is a first indication, and the second UE may further transmit a second indication to the first UE indicating sidelink beam management information. The first indication and the second indication may be the same or different. In some embodiments, one or more carriers in the first frequency range may be multiple carriers that are aggregated, and each of the multiple carriers may include a different indication that indicates different sidelink beam management information.

[0043] In some embodiments, the one or more carriers in the first frequency range may be a plurality of aggregated carriers, and one or more particular carriers of the plurality of carriers may include one or more indications indicative of sidelink beam management information. The one or more particular carriers may be configured by the network node or pre-configured in the second UE.

[0044] In some embodiments, sidelink communication within a first frequency range is based on a first RAT, and sidelink communication within a second frequency range is based on a second RAT. The first RAT and the second RAT may be the same or different from each other. In some embodiments, the first RAT is LTE and the second RAT is NR. In some embodiments, both the first RAT and the second RAT are NR.

[0045] The method 400 includes identifying 404, by the second UE, based on the indication, sidelink beam management information associated with one or more beams in the second frequency range.

[0046] For example, in some embodiments, the indication is an explicit indication, and the second UE may identify sidelink beam management information associated with one or more beams in the second frequency range by decoding an SCI received from the first UE in the first frequency range. In some embodiments, the indication is an implicit indication, and the second UE may derive the indication indicative of sidelink beam management information associated with one or more beams in the second frequency range from one or more resources used for transmission of one or more carriers based on a mapping rule. The mapping rule may be configured by the network node, pre-configured in the first UE and the second UE, or pre-defined.

[0047] The method 400 includes adjusting 406 sidelink communications associated with one or more beams in the second frequency range based on the sidelink beam management information. For example, the second UE may adjust beam alignment based on the identified beam management information. The second UE may also adjust resources used for transmission and / or reception based on the identified beam management information.

[0048] FIG. 5 is a block diagram of a UE 500 consistent with some embodiments of the present disclosure. For example, each of the Tx UE and Rx UE of FIG. 2 may be in the form of a UE 500. The UE 500 may be mounted in a moving vehicle or a fixed location. The UE 500 may take any form, including, but not limited to, a vehicle, a component mounted within a vehicle, a roadside unit, a laptop computer, a mobile phone, a wireless terminal including a wireless handheld device, or a wireless personal device, or any other form. Referring to FIG. 5, the UE 500 may include an antenna 502 that may be used for transmitting or receiving electromagnetic signals to / from a base station or other UEs. The antenna 502 may include one or more antenna elements and may enable various input / output antenna configurations, such as a multiple-input multiple-output (MIMO) configuration, a multiple-input single-output (MISO) configuration, or a single-input multiple-output (SIMO) configuration. In some embodiments, the antenna 502 may include multiple (e.g., tens or hundreds) antenna elements and may enable multi-antenna functions such as beamforming. In some embodiments, the antenna 502 is a single antenna. The antenna 502 may be an FR1 omnidirectional antenna or an FR2 antenna.

[0049] The UE 500 may include a transceiver 504 coupled to the antenna 502. The transceiver 504 may be a wireless transceiver of the UE 500 and may communicate bidirectionally with a base station or other UEs. For example, the transceiver 504 may receive / transmit wireless signals from / to a base station via downlink / uplink communication. The transceiver 504 may also receive / transmit wireless signals from / to another UE or roadside unit or a base station via sidelink communication. The transceiver 504 may include a modem for modulating packets and providing the modulated packets to the antenna 502 for transmission and for demodulating packets received from the antenna 502.

[0050] The UE 500 may include memory 506. The memory 506 may be any type of computer-readable storage medium, including volatile or non-volatile memory devices, or a combination thereof. Computer-readable storage media include, but are not limited to, non-transitory computer storage media. Non-transitory storage media may be accessed by a general-purpose or special-purpose computer. Examples of non-transitory storage media include, but are not limited to, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), electrically erasable programmable ROM (EEPROM), digital versatile disks (DVDs), flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, etc. The non-transitory medium may be used to carry or store desired program code means (e.g., instructions and / or data structures) and may be accessed by a general-purpose or special-purpose computer or a general-purpose or special-purpose processor. In some examples, the software / program code may be transmitted from a remote source (e.g., a website, a server, etc.) using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, microwave, etc. In such examples, coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, microwave, etc. are within the definition of medium. Combinations of the above examples are also included within the scope of computer-readable media.

[0051] The memory 506 may store information regarding the identification of the UE 500, as well as signals and / or data received by the antenna 502. The memory 506 may also store post-processed signals and / or data. The memory 506 may also store computer-readable program instructions, mathematical models, and algorithms used in signal processing in the receiver 504 and calculations in the processor 508. The memory 506 may further store computer-readable program instructions for execution by the processor 508 to operate the UE 500 to perform various functions described in this disclosure. In some examples, the memory 506 may include a basic input / output system (BIOS) that may control basic hardware or software operations such as interaction with peripheral components or devices. In some embodiments, the memory 506 includes both an LTE SL module and an NR SL module. In some embodiments, the memory 506 includes only an NR SL module. In some embodiments, the memory 506 includes only an LTE SL module.

[0052] The computer-readable program instructions of the present disclosure may be assembler instructions, instruction set architecture (ISA) instructions, machine language instructions, machine-dependent instructions, microcode, firmware instructions, state-setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​and traditional procedural programming languages. The computer-readable program instructions may be executed entirely on a computing device as a standalone software package, or may be executed partially on a first computing device and partially on a second computing device remote from the first computing device. In the latter scenario, the second, remote computing device may be a local area network (LAN) based system. The first computing device may be connected through any type of network, including a local area network (LAN) or a wide area network (WAN).

[0053] The UE 500 may include a processor 508, which may include hardware devices having processing capabilities. The processor 508 may include at least one of a general-purpose processor, a digital signal processor (DSP), a central processing unit (CPU), a microcontroller, an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or another programmable logic device. Examples of a general-purpose processor include, but are not limited to, a microprocessor, any conventional processor, controller, microcontroller, or state machine. In some embodiments, the processor 508 may be implemented using a combination of devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors and a DSP core, or any other such configuration). The processor 508 may receive downlink or sidelink signals from the transceiver 504 and further process the signals. The processor 508 may also receive data packets from the transceiver 504 and further process the packets. In some embodiments, the processor 508 may be configured to operate memory using a memory controller. In some embodiments, the memory controller may be integrated within the processor 508. The processor 508 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 506) to cause the UE 500 to perform various functions.

[0054] The UE 500 may include a global positioning system (GPS) 510. The GPS 510 may be used to enable location-based services or other services based on the geographic location of the UE 500 and / or synchronization between UEs. The GPS 510 may receive global navigation satellite system (GNSS) signals from a single satellite or multiple satellite signals via the antenna 502 and provide the geographic location of the UE 500 (e.g., the coordinates of the UE 500). In some embodiments, the GPS 510 is omitted. In some embodiments, a timer is included.

[0055] The UE 500 may include input / output (I / O) devices 512 that can be used to communicate the results of signal processing and calculations to a user or another device. The I / O devices 512 may include a user interface including a display and an input device for sending user commands to the processor 508. The display may be configured to display the status of signal reception at the UE 500, data stored in the memory 506, the status of signal processing, and the results of calculations. The display may include, but is not limited to, a cathode ray tube (CRT), a liquid crystal display (LCD), a light-emitting diode (LED), a gas plasma display, a touchscreen, or other image projection devices for displaying information to a user. The input devices may be any type of computer hardware equipment used to receive data and control signals from a user. The input devices may include, but are not limited to, a keyboard, a mouse, a scanner, a digital camera, a joystick, a trackball, cursor direction keys, a touchscreen monitor, or an audio / video commander.

[0056] The UE 500 may further include a machine interface 514, such as an electrical bus, that connects the transceiver 504, memory 506, processor 508, GPS 510, and I / O device(s) 512.

[0057] In some embodiments, the UE 500 is a transmitter UE in sidelink communications and may be configured or programmed to provide sidelink beam management information. The processor 508 executes instructions stored in the memory 506 to transmit one or more of the sidelink beams within the first frequency range. The wireless communication device may be configured or programmed to: configure a plurality of carriers, at least one of the one or more carriers including an indication indicative of sidelink beam management information associated with one or more beams in the second frequency range; and transmit the configured one or more carriers in the first frequency range to a second UE to enable the second UE to obtain the indication.

[0058] In some embodiments, the UE 500 is a receiver UE for sidelink communications and may be configured or programmed to receive sidelink beam management information. The processor 508 may be configured or programmed to execute instructions stored in the memory 506 to receive from the first UE one or more carriers in a first frequency range, where at least one of the one or more carriers includes an indication of sidelink beam management information associated with one or more beams in a second frequency range, identify sidelink beam management information associated with one or more beams in the second frequency range based on the indication, and adjust sidelink communications associated with the one or more beams in the second frequency range based on the sidelink beam management information.

[0059] As used in this disclosure, the use of the term "or" in a list of items indicates an inclusive list. A list of items may be prefaced with a phrase such as "at least one of" or "one or more of." For example, a list of at least one of A, B, or C includes A or B or C or AB (i.e., A and B), or AC or BC or ABC (i.e., A and B and C). Also, as used in this disclosure, prefaced a list of conditions with the phrase "based on" should not be construed as "based only on" the set of conditions, but rather as "based at least in part on" the set of conditions. For example, a conclusion stated as "based on condition A" could be based on both condition A and condition B without departing from the scope of this disclosure.

[0060] As used herein, the terms "comprise," "include," or "contain" are used interchangeably, can have the same meaning, and are to be interpreted in an inclusive and broad manner. The terms "comprise," "include," or "contain" can be used before a list of elements to indicate that at least all of the listed elements in the list are present, but that other elements not in the list may also be present. For example, if A comprises B and C, then both {B,C} and {B,C,D} are within the scope of A.

[0061] The present disclosure, along with the accompanying drawings, describes illustrative configurations that are not representative of all examples that may be implemented or of all configurations within the scope of the present disclosure. The term "exemplary" should not be interpreted as "preferred" or "advantageous over other examples," but rather as "illustration, instance, or example." By reading this disclosure, including the description of the embodiments and figures, those skilled in the art will recognize that the technology disclosed herein may be implemented using alternative embodiments. Those skilled in the art will recognize that the embodiments, or specific features of the embodiments, described herein may be combined to arrive at still other embodiments for practicing the technology described in the present disclosure. Thus, the present disclosure is not limited to the examples and designs described herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0062] The flowcharts and block diagrams in the figures illustrate examples of the architecture, functionality, and operation of possible implementations of systems, methods, and devices according to various embodiments. It should be noted that in some alternative implementations, the functions noted in the blocks may occur out of the order noted in the figures. For example, two blocks shown in succession may actually be The blocks may be executed substantially concurrently, or the blocks may sometimes be executed in reverse order, depending upon the functionality involved. Likewise, additional steps may be included in such methods, and certain steps may be omitted or combined, in methods consistent with various embodiments.

[0063] It is understood that the described embodiments are not mutually exclusive, and that elements, components, materials, or steps described in connection with one illustrative embodiment may be combined with or removed from other embodiments in any suitable manner to achieve desired design objectives.

[0064] References herein to "some embodiments" or "some exemplary embodiments" mean that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment. The appearances of the phrases "one embodiment," "some embodiments," or "another embodiment" in various places in this disclosure do not necessarily all refer to the same embodiments, nor do separate or alternative embodiments necessarily exclude other embodiments from one another.

[0065] Additionally, the articles "a" and "an," as used in this disclosure and the appended claims, should generally be construed to mean "one or more," unless otherwise specified or unless it is clear from the context that the singular form is intended.

[0066] Unless expressly stated otherwise, each numerical value and range should be interpreted as an approximation, such as by the word "about" or "approximately" preceding the value or range value.

[0067] Although elements in the following method claims, if any, are recited in a particular order, these elements are not necessarily intended to be limited to being performed in this particular order, unless the recitation of a claim otherwise suggests a particular order for performing some or all of these elements.

[0068] It is understood that certain features of the present disclosure, which are, for clarity, described in the context of separate embodiments, may also be provided in combination in a single embodiment. Conversely, various features herein that are, for brevity, described in the context of a single embodiment, may also be provided separately or in any suitable subcombination, or as appropriate in any other described embodiment herein. Certain features described in the context of various embodiments are not essential features of those embodiments, unless noted as such.

[0069] It will be further understood that various changes, substitutions, and variations in the details, materials, and arrangements of parts described and illustrated to explain the nature of the described embodiments may be made by those skilled in the art without departing from the scope of the present disclosure, and it is therefore intended that the following claims encompass all such alternatives, modifications, and variations as fall within the scope of the claims.

[0070] Supplementary Note 1. A first user equipment (UE) for providing sidelink beam management information, comprising: a memory for storing instructions; Executes instructions stored in memory configuring one or more carriers in a first frequency range, wherein at least one of the one or more carriers is configured to transmit one or more beams in a second frequency range; and including an indication of sidelink beam management information associated with the transmitting the configured one or more carriers within the first frequency range to the second UE to enable the second UE to obtain the indication; a processor configured to: a first UE comprising:

[0071] Supplementary Note 2. The first UE of Supplementary Note 1, wherein the first frequency range is FR1 and the second frequency range is FR2.

[0072] Supplementary Note 3. The first UE of Supplementary Note 1, wherein the indication is sent via at least one of sidelink control information (SCI) of a physical layer, a MAC control element (CE) of a media access control (MAC) layer, or higher layer information.

[0073] Clause 4. The first UE of Clause 1, wherein the indication includes one or more identities (IDs) of one or more beam reference signals corresponding to one or more beams in the second frequency range.

[0074] Supplementary Note 5. The first UE of Supplementary Note 4, wherein the indication further includes one or more resources used for transmission of the one or more beam reference signals, the one or more resources including at least one of a time resource or a frequency resource.

[0075] Supplementary Note 6. The first UE of Supplementary Note 1, wherein the one or more beams are multiple beams transmitted from multiple different antennas or multiple different antenna panels, and the indication includes an order of transmission of at least one of the multiple beams or multiple antenna panels.

[0076] Supplementary Note 7. The first UE of Supplementary Note 1, wherein the indication further includes an indication of directional beam transmission support with or without beam tuning capability.

[0077] Supplementary Note 8. The first UE of Supplementary Note 4, wherein configuring one or more carriers in the first frequency range is performed before initial beam alignment, and wherein the indication includes a full list of IDs of the one or more beam reference signals and corresponding resources used for transmission of the one or more beam reference signals.

[0078] Supplementary Note 9. The first UE of Supplementary Note 4, wherein configuring one or more carriers in the first frequency range is performed after initial beam alignment, and the indication includes a partial list of identities of one or more beam reference signals.

[0079] Clause 10. The first UE of Clause 1, wherein the second UE is a plurality of UEs configured to operate under a second frequency range.

[0080] Clause 11. The indication is a first indication, and the processor executes instructions stored in the memory to: monitoring at least one of the plurality of UEs for transmission of at least one second indication indicative of sidelink beam management information; in response to determining that the first indication and the second indication are identical, avoiding transmitting the first indication; 11. The first UE of Supplementary Note 10, further configured to:

[0081] Appendix 12. Indication of sidelink beam management information is based on the mapping rule 10. The first UE of claim 1, wherein the mapping rule is configured, pre-configured, or pre-defined based on one or more resources used for transmission on one or more carriers.

[0082] Supplementary Note 13. The first UE of Supplementary Note 1, wherein one or more carriers in the first frequency range are aggregated carriers, each of the plurality of carriers including a different indication that indicates different sidelink beam management information.

[0083] Supplementary Note 14. The first UE of Supplementary Note 1, wherein one or more carriers in the first frequency range are aggregated multiple carriers, and one or more particular carriers of the multiple carriers include one or more indications indicative of sidelink beam management information, and wherein the one or more particular carriers are configured or pre-configured.

[0084] Appendix 15. The first UE of Appendix 1, wherein sidelink communication within a first frequency range is based on a first radio access technology (RAT) and sidelink communication within a second frequency range is based on a second RAT, the first RAT and the second RAT being the same or different from each other.

[0085] Appendix 16. The first UE of Appendix 15, wherein the first RAT is long term evolution (LTE) and the second RAT is new radio (NR).

[0086] Appendix 17. The first UE of Appendix 15, wherein the first RAT and the second RAT are both NR.

[0087] Supplementary Note 18. A second user equipment (UE) for receiving sidelink beam management information, comprising: a memory for storing instructions; Executes instructions stored in memory receiving from a first UE one or more carriers in a first frequency range, wherein at least one of the one or more carriers includes an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range; identifying sidelink beam management information associated with one or more beams within the second frequency range based on the indication; and adjusting sidelink communications associated with one or more beams within the second frequency range based on the sidelink beam management information; a processor configured to: a second UE comprising:

[0088] Clause 19. The second UE of Clause 18, wherein the first frequency range is FR1 and the second frequency range is FR2.

[0089] Supplementary Note 20. The second UE of Supplementary Note 18, wherein the indication is received via at least one of sidelink control information (SCI) at a physical layer, a MAC control element (CE) at a media access control (MAC) layer, or higher layer information.

[0090] Clause 21. The second UE of Clause 18, wherein the indication includes one or more identities (IDs) of one or more beam reference signals corresponding to one or more beams in the second frequency range.

[0091] Appendix 22. Indication used for transmission of one or more beam reference signals 22. The second UE of claim 21, further comprising one or more resources to be transmitted over the UE, the one or more resources comprising at least one of a time resource or a frequency resource.

[0092] 23. The second UE of Claim 18, wherein the one or more beams are multiple beams transmitted from multiple different antennas or multiple different antenna panels, and the indication includes an order of transmission of at least one of the multiple beams or multiple antenna panels.

[0093] Clause 24. The second UE of Clause 18, wherein the indication further includes an indication of directional beam transmission support with or without beam tuning capability.

[0094] Clause 25. The indication is a first indication, and the processor executes instructions stored in the memory to: sending, to the first UE, a second indication indicating sidelink beam management information, wherein the first indication and the second indication are identical or different; 19. The second UE of claim 18, further configured to:

[0095] Clause 26. In identifying sidelink beam management information, a processor executes instructions stored in a memory to: deriving an indication of sidelink beam management information from one or more resources used for transmission of one or more carriers based on a mapping rule, the mapping rule being configured, pre-configured or pre-defined; 19. The second UE of Supplementary Note 18, configured to:

[0096] Supplementary Note 27. The second UE of Supplementary Note 18, wherein one or more carriers in the first frequency range are aggregated carriers, each of the plurality of carriers including a different indication that indicates different sidelink beam management information.

[0097] Supplementary Note 28. The second UE of Supplementary Note 18, wherein one or more carriers in the first frequency range are aggregated multiple carriers, and one or more particular carriers of the multiple carriers include one or more indications indicative of sidelink beam management information, and wherein the one or more particular carriers are configured or pre-configured.

[0098] Appendix 29. The second UE of Appendix 18, wherein sidelink communication within a first frequency range is based on a first radio access technology (RAT) and sidelink communication within a second frequency range is based on a second RAT, the first RAT and the second RAT being the same or different from each other.

[0099] Appendix 30. The second UE of Appendix 29, wherein the first RAT is long term evolution (LTE) and the second RAT is new radio (NR).

[0100] Appendix 31. The second UE of Appendix 29, wherein the first RAT and the second RAT are both NR.

[0101] Clause 32. A method for providing sidelink beam management information, comprising: configuring, by a first user equipment (UE), one or more carriers in a first frequency range, wherein at least one of the one or more carriers includes an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range; transmitting the configured one or more carriers within the first frequency range to the second UE to enable the second UE to obtain the indication; A method comprising:

[0102] Clause 33. The method of Clause 32, wherein the first frequency range is FR1 and the second frequency range is FR2.

[0103] Attachment 34. The method of attachment 32, wherein the indication is sent via at least one of sidelink control information (SCI) of a physical layer, a MAC control element (CE) of a media access control (MAC) layer, or higher layer information.

[0104] Clause 35. The method of Clause 32, wherein the indication includes one or more identifications (IDs) of one or more beam reference signals corresponding to one or more beams in the second frequency range.

[0105] Appendix 36. The method of Appendix 35, wherein the indication further includes one or more resources used for transmission of the one or more beam reference signals, the one or more resources including at least one of a time resource or a frequency resource.

[0106] 37. The method of claim 32, wherein the one or more beams are multiple beams transmitted from multiple different antennas or multiple different antenna panels, and the indication includes an order of transmission of at least one of the multiple beams or multiple antenna panels.

[0107] Clause 38. The method of Clause 32, wherein the indication further includes an indication of directional beam transmission support with or without beam tuning capability.

[0108] Clause 39. The method of Clause 35, wherein configuring one or more carriers in the first frequency range is performed before initial beam alignment, and wherein the indication includes a full list of identities of one or more beam reference signals and corresponding resources used for transmission of the one or more beam reference signals.

[0109] Clause 40. The method of Clause 35, wherein configuring one or more carriers in the first frequency range is performed after initial beam alignment and the indication includes a partial list of identities of one or more beam reference signals.

[0110] Clause 41. The method of Clause 32, wherein the second UE is a plurality of UEs configured to operate under the second frequency range.

[0111] Note 42. The indication is the first indication, monitoring at least one of the plurality of UEs for transmission of at least one second indication indicative of sidelink beam management information; in response to determining that the first indication and the second indication are identical, avoiding transmitting the first indication; 42. The method of claim 41, further comprising:

[0112] Supplementary Note 43. The method of Supplementary Note 32, wherein the indication indicative of sidelink beam management information is derived from one or more resources used for transmission of one or more carriers based on a mapping rule, the mapping rule being configured, pre-configured, or pre-defined.

[0113] Supplementary Note 44. The method of Supplementary Note 32, wherein one or more carriers in the first frequency range are aggregated carriers, each of the plurality of carriers including a different indication that indicates a different sidelink beam management information.

[0114] Supplementary Note 45. The method of Supplementary Note 32, wherein one or more carriers in the first frequency range are aggregated carriers, and one or more particular carriers of the plurality of carriers include one or more indications indicative of sidelink beam management information, and wherein the one or more particular carriers are configured or pre-configured.

[0115] Appendix 46. The method of Appendix 32, wherein sidelink communication within a first frequency range is based on a first radio access technology (RAT) and sidelink communication within a second frequency range is based on a second RAT, the first RAT and the second RAT being the same or different from each other.

[0116] Clause 47. The method of Clause 46, wherein the first RAT is long term evolution (LTE) and the second RAT is new radio (NR).

[0117] Clause 48. The method of Clause 46, wherein the first RAT and the second RAT are both NR.

[0118] Clause 49. A method for receiving sidelink beam management information, comprising: receiving, by a second user equipment (UE) from the first UE, one or more carriers in a first frequency range, wherein at least one of the one or more carriers includes an indication indicative of sidelink beam management information associated with one or more beams in the second frequency range; identifying, by the second UE based on the indication, sidelink beam management information associated with one or more beams in the second frequency range; adjusting sidelink communications associated with one or more beams within the second frequency range based on the sidelink beam management information; A method comprising:

[0119] Clause 50. The method of Clause 49, wherein the first frequency range is FR1 and the second frequency range is FR2.

[0120] Attachment 51. The method of attachment 49, wherein the indication is received via at least one of sidelink control information (SCI) at a physical layer, a MAC control element (CE) at a media access control (MAC) layer, or higher layer information.

[0121] Clause 52. The method of Clause 49, wherein the indication includes one or more identifications (IDs) of one or more beam reference signals corresponding to one or more beams in the second frequency range.

[0122] Clause 53. The method of Clause 52, wherein the indication further includes one or more resources used for transmission of the one or more beam reference signals, the one or more resources including at least one of a time resource or a frequency resource.

[0123] Clause 54. The method of clause 49, wherein the one or more beams are multiple beams transmitted from multiple different antennas or multiple different antenna panels, and the indication includes an order of transmission of at least one of the multiple beams or multiple antenna panels.

[0124] Clause 55. The method of clause 49, wherein the indication further includes an indication of directional beam transmission support with or without beam tuning capability.

[0125] Note 56. The indication is the first indication, sending, to the first UE, a second indication indicating sidelink beam management information, wherein the first indication and the second indication are identical or different; 49. The method of claim 49, further comprising:

[0126] Clause 57. Identifying sidelink beam management information 49. The method of claim 49, further comprising: deriving an indication indicative of sidelink beam management information from one or more resources used for transmission of one or more carriers based on a mapping rule, wherein the mapping rule is configured, pre-configured, or pre-defined.

[0127] Supplementary Note 58. The method of Supplementary Note 49, wherein one or more carriers within the first frequency range are aggregated carriers, each of the plurality of carriers including a different indication that indicates a different sidelink beam management information.

[0128] Supplementary Note 59. The method of Supplementary Note 49, wherein one or more carriers in the first frequency range are a plurality of aggregated carriers, and one or more particular carriers of the plurality of carriers include one or more indications indicative of sidelink beam management information, and the one or more particular carriers are configured or pre-configured.

[0129] Appendix 60. The method of Appendix 49, wherein sidelink communication within a first frequency range is based on a first radio access technology (RAT) and sidelink communication within a second frequency range is based on a second RAT, the first RAT and the second RAT being the same or different from each other.

[0130] Clause 61. The method of Clause 60, wherein the first RAT is long term evolution (LTE) and the second RAT is new radio (NR).

[0131] Clause 62. The method of Clause 60, wherein the first RAT and the second RAT are both NR.

[0132] Clause 63. A non-transitory computer-readable medium storing instructions executable by one or more processors of a first user equipment (UE) in a sidelink communications network to implement a method, the method comprising: configuring one or more carriers in a first frequency range, at least one of the one or more carriers including an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range; transmitting the configured one or more carriers within the first frequency range to the second UE to enable the second UE to obtain the indication; 1. A non-transitory computer-readable medium comprising:

[0133] Clause 64. A non-transitory computer-readable medium storing instructions executable by one or more processors of a second user equipment (UE) in sidelink communication to implement a method, the method comprising: receiving from the first UE one or more carriers in a first frequency range, at least one of the one or more carriers including an indication indicative of sidelink beam management information associated with one or more beams in a second frequency range; identifying sidelink beam management information associated with one or more beams within the second frequency range based on the indication; and adjusting sidelink communications associated with one or more beams within the second frequency range based on the sidelink beam management information; 1. A non-transitory computer-readable medium comprising:

Claims

1. A first user equipment (UE) for providing sidelink beam management information, comprising: a memory for storing instructions; Executing the instructions stored in the memory configuring one or more carriers in a first frequency range, at least one of the one or more carriers including an indication of sidelink beam management information associated with one or more beams in a second frequency range; transmitting the configured one or more carriers in the first frequency range to a second UE to enable the second UE to obtain the indication; and a first UE comprising:

2. the first frequency range is FR1 and the second frequency range is FR2; The first UE of claim 1 .

3. the indication is transmitted via at least one of a Sidelink Control Information (SCI) of a physical layer, a MAC Control Element (CE) of a Media Access Control (MAC) layer, or higher layer information; The first UE of claim 1 .

4. the indication includes one or more identifications (IDs) of one or more beam reference signals corresponding to the one or more beams in the second frequency range. The first UE of claim 1 .

5. the indication further includes one or more resources used for transmission of the one or more beam reference signals, the one or more resources including at least one of a time resource or a frequency resource. The first UE of claim 4.

6. the one or more beams are multiple beams transmitted from multiple different antennas or multiple different antenna panels, and the indication includes an order of transmission of at least one of the multiple beams or the multiple antenna panels. The first UE of claim 1 .

7. the indication further includes an indication of directional beam transmission support with or without beam tuning capability. The first UE of claim 1 .

8. configuring the one or more carriers within the first frequency range is performed before initial beam alignment, and the indication includes a complete list of IDs of the one or more beam reference signals and corresponding resources used for transmission of the one or more beam reference signals. The first UE of claim 4.

9. configuring the one or more carriers within the first frequency range is performed after initial beam alignment, and the indication includes a partial list of IDs of the one or more beam reference signals. The first UE of claim 4.

10. the second UE is a plurality of UEs configured to operate under the second frequency range; The first UE of claim 1 .

11. the indication is a first indication, and the processor executes the instructions stored in the memory to monitoring at least one of the plurality of UEs for transmission of at least one second indication indicative of sidelink beam management information; in response to determining that the first indication and the second indication are identical, avoiding transmission of the first indication; further configured to: The first UE of claim 10.

12. the indication of sidelink beam management information is derived from one or more resources used for transmission of the one or more carriers based on a mapping rule, the mapping rule being configured, pre-configured or pre-defined. The first UE of claim 1 .

13. the one or more carriers in the first frequency range are aggregated carriers, each of the plurality of carriers including a different indication of different sidelink beam management information. The first UE of claim 1 .

14. the one or more carriers in a first frequency range are aggregated carriers, and one or more specific carriers of the plurality of carriers include one or more indications of sidelink beam management information, and the one or more specific carriers are configured or pre-configured. The first UE of claim 1 .

15. the sidelink communication in the first frequency range is based on a first radio access technology (RAT), and the sidelink communication in the second frequency range is based on a second RAT, and the first RAT and the second RAT are the same or different from each other. The first UE of claim 1 .

16. The first RAT is long term evolution (LTE) and the second RAT is new radio (NR), The first UE of claim 15.

17. The first RAT and the second RAT are both NR. The first UE of claim 15.

18. a second user equipment (UE) for receiving sidelink beam management information, a memory for storing instructions; Executing the instructions stored in the memory receiving from a first UE one or more carriers in a first frequency range, at least one of the one or more carriers including an indication of sidelink beam management information associated with one or more beams in a second frequency range; identifying the sidelink beam management information associated with the one or more beams in the second frequency range based on the indication; and adjusting sidelink communications associated with the one or more beams within the second frequency range based on the sidelink beam management information; and a processor configured to: a second UE comprising:

19. the indication is a first indication, and the processor executes the instructions stored in the memory to transmitting a second indication indicating sidelink beam management information to the first UE, wherein the first indication and the second indication are identical or different. further configured to: The second UE of claim 18.

20. 1. A method for providing sidelink beam management information, comprising: configuring, by a first user equipment (UE), one or more carriers in a first frequency range, at least one of the one or more carriers including an indication of sidelink beam management information associated with one or more beams in a second frequency range; transmitting the configured one or more carriers within the first frequency range to a second UE, such that the second UE can obtain the indication; A method comprising:

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