Uplink transmit switching for sidelink and uplink bands

Abstract

Methods, systems, and devices for wireless communication are described. In a wireless communication system, a user equipment (UE) may be capable of performing an uplink transmission handover from an uplink band to a sidelink band. Additionally, the UE may support performing uplink transmissions on the uplink frequency band, on the sidelink frequency band, or on both the uplink frequency band or the sidelink frequency band simultaneously. The UE may receive a grant to schedule an uplink message for transmission over a set of one or more transmit ports. If the UE cannot transmit the uplink message on a scheduled frequency band (e.g., the uplink frequency band) using the set of transmit ports indicated in the grant, the UE may switch a transmitter from the uplink frequency band to the sidelink frequency band, and the UE may transmit the uplink message using the sidelink frequency band according to the grant.

Description

Technical Field

[0001] The following relates to wireless communications, including uplink transmission switching for sidelink frequency bands and uplink frequency bands. Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to 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, advanced LTE (LTE-A) systems, or LTE-A Pro systems) and fifth generation (5G) systems (which may be referred to as new radio (NR) systems). These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal FDMA (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations, each of which supports wireless communications for communication devices, which may be referred to as user equipment (UE). Summary of the invention

[0003] The described technology relates to an improved method, system, device and apparatus for supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band. For example, the described technology provides an uplink switching between an uplink frequency band and a sidelink frequency band, which can increase signaling throughput, improve spectrum efficiency and improve resource utilization. In some examples, a user equipment (UE) may send a capability message indicating the ability of the UE to perform uplink switching between an uplink frequency band and a sidelink frequency band. In some examples, the UE may be able to communicate independently via the uplink frequency band, independently via the sidelink frequency band, or simultaneously via the uplink frequency band and the sidelink frequency band. The UE may receive a grant for scheduling an uplink message to be sent via a set of one or more transmission ports. If the UE cannot use the transmission port and the scheduled frequency band to send the uplink message, the UE may switch from sending using the uplink frequency band to sending using the sidelink frequency band, and the UE may use the sidelink frequency band accordingly to send the uplink message.

[0004] A method for wireless communication is described. The method may include: sending a capability message indicating the ability of a UE to perform uplink switching between an uplink frequency band and a sidelink frequency band; receiving a grant to schedule an uplink message for transmission over a set of one or more transmit ports; switching a transmitter of the UE from the uplink frequency band to the sidelink frequency band based on the set of one or more transmit ports and the capability message; and sending the uplink message using the sidelink frequency band in accordance with the grant and based on the switching.

[0005] An apparatus for wireless communication is described. The apparatus may include: a processor; a memory in electronic communication with the processor; and instructions stored in the memory. The instructions may be executable by the processor to: send a capability message indicating the ability of the UE to perform an uplink switch between an uplink frequency band and a sidelink frequency band; receive a grant to schedule an uplink message to be sent through a set of one or more transmit ports; switch a transmitter of the UE from the uplink frequency band to the sidelink frequency band based on the set of one or more transmit ports and the capability message; and send the uplink message using the sidelink frequency band in accordance with the grant and based on the switch.

[0006] Another apparatus for wireless communication is described. The apparatus may include: means for sending a capability message indicating the ability of a UE to perform an uplink switch between an uplink frequency band and a sidelink frequency band; means for receiving a grant to schedule an uplink message for transmission over a set of one or more transmit ports; means for switching a transmitter of the UE from the uplink frequency band to the sidelink frequency band based on the set of one or more transmit ports and the capability message; and means for sending the uplink message using the sidelink frequency band in accordance with the grant and based on the switch.

[0007] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable to: send a capability message indicating the UE's ability to perform uplink switching between an uplink frequency band and a sidelink frequency band; receive a grant to schedule an uplink message to be sent through a set of one or more transmit ports; switch a transmitter of the UE from the uplink frequency band to the sidelink frequency band based on the set of one or more transmit ports and the capability message; and send the uplink message using the sidelink frequency band in accordance with the grant and based on the switching.

[0008] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following items: based on switching the transmitter of the UE, sending a feedback report associated with the grant via the sidelink frequency band, wherein the feedback report indicates that the switching is successful.

[0009] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following items: based on switching the transmitter of the UE to send a feedback report associated with the grant over the sidelink frequency band, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band.

[0010] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following items: retaining a feedback report associated with the grant over the side link frequency band based on a conflict associated with the uplink message on the side link frequency band.

[0011] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for reserving one or more future time slots of the sidelink frequency band for sending the uplink message based on the grant.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the uplink message may be associated with a first radio access technology (RAT) and scheduled for resources associated with a second RAT on the sidelink frequency band.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the uplink message can be associated with a set of resources on the sidelink frequency band that can be excluded from sidelink communications.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the capability message may include operations, features, components, or instructions for performing the following items: sending, via the capability message, an indication that the UE may be able to perform uplink transmissions using one or more of the following items: the uplink frequency band, the sidelink frequency band, or both the uplink frequency band and the sidelink frequency band.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the capability message may include operations, features, components, or instructions for performing the following items: sending, via the capability message, an indication of the number or set of timing advance groups (TAGs) supported by the UE for simultaneous transmission over the uplink frequency band and the sidelink frequency band.

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, at most two transmissions may be scheduled for the uplink frequency band and the sidelink frequency band.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a switching gap between receiving the grant and sending the uplink message can be based at least in part on a switching period between frequency bands in the same TAG and a defined maximum transmit timing difference (MTTD).

[0018] A method for wireless communication is described. The method may include: receiving a capability message indicating the ability of a UE to perform uplink switching between an uplink frequency band and a sidelink frequency band; sending a grant to schedule an uplink message for transmission over a set of one or more transmit ports; and receiving the uplink message using the sidelink frequency band in accordance with the grant and based on a transmitter of the UE switching from the uplink frequency band to the sidelink frequency band.

[0019] An apparatus for wireless communication is described. The apparatus may include: a processor; a memory in electronic communication with the processor; and instructions stored in the memory. The instructions may be executable by the processor to: receive a capability message indicating the ability of a UE to perform uplink switching between an uplink frequency band and a sidelink frequency band; send a grant to schedule an uplink message to be sent through a set of one or more transmit ports; and receive the uplink message using the sidelink frequency band in accordance with the grant and based on a transmitter of the UE switching from the uplink frequency band to the sidelink frequency band.

[0020] Another apparatus for wireless communication is described. The apparatus may include: means for receiving a capability message indicating the ability of a UE to perform uplink switching between an uplink frequency band and a sidelink frequency band; means for sending a grant to schedule an uplink message for transmission over a set of one or more transmit ports; and means for receiving the uplink message using the sidelink frequency band in accordance with the grant and based on a transmitter of the UE switching from the uplink frequency band to the sidelink frequency band.

[0021] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions executable to: receive a capability message indicating the ability of a UE to perform uplink switching between an uplink frequency band and a sidelink frequency band; send a grant to schedule an uplink message for transmission over a set of one or more transmit ports; and receive the uplink message using the sidelink frequency band based on the grant and based on a transmitter of the UE switching from the uplink frequency band to the sidelink frequency band.

[0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following items: receiving a feedback report associated with the grant over the sidelink frequency band based on switching of the transmitter of the UE, wherein the feedback report indicates that the switching is successful.

[0023] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for performing the following items: receiving a feedback report associated with the grant over the sidelink frequency band based on switching of the transmitter of the UE, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the uplink message may include operations, features, components, or instructions for performing the following items: receiving the uplink message based on the grant via one or more future time slots of the sidelink frequency band.

[0025] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the uplink message may be associated with the first RAT and scheduled for resources associated with the second RAT on the sidelink frequency band.

[0026] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the uplink message can be associated with a set of resources on the sidelink frequency band that can be excluded from sidelink communications.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the capability message may include operations, features, components, or instructions for performing the following items: receiving, via the capability message, an indication that the UE may be able to perform uplink transmissions using one or more of the following items: the uplink frequency band, the sidelink frequency band, or both the uplink frequency band and the sidelink frequency band.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the capability message may include operations, features, components, or instructions for performing the following items: receiving, via the capability message, an indication of the number or set of TAGs supported by the UE for simultaneous transmission over the uplink frequency band and the sidelink frequency band.

[0029] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, at most two transmissions may be scheduled for the uplink frequency band and the sidelink frequency band.

[0030] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a switching gap between sending the grant and receiving the uplink message can be based at least in part on a switching period between frequency bands in the same TAG and a defined MTTD. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 An example of a wireless communication system supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is illustrated.

[0032] Figure 2 An example of a wireless communication system supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is illustrated.

[0033] Figure 3 An example of a process flow supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is illustrated.

[0034] Figure 4 and Figure 5 A block diagram of a device supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown.

[0035] Figure 6 A block diagram of a communication manager supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band is shown in accordance with one or more aspects of the present disclosure.

[0036] Figure 7 A diagram of a system of devices supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown.

[0037] Figure 8 and Fig. 9 A block diagram of a device supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown.

[0038] Fig.10 A block diagram of a communication manager supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band is shown in accordance with one or more aspects of the present disclosure.

[0039] Fig.11 A diagram of a system of devices supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown.

[0040] Figures 12 to 17A flow chart illustrating a method of supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0041] In some wireless communication systems, user equipment (UE) can perform uplink transmission switching between two frequency bands to increase uplink signaling throughput and improve resource utilization. For example, UE can switch between sending uplink messages on different frequency bands based on the type of data being sent. However, UE may not be able to perform uplink switching from uplink frequency band to sidelink frequency band. For example, UE can switch from sending uplink messages on uplink frequency band to sending uplink messages on sidelink frequency band. However, other transmissions may have been scheduled on the sidelink frequency band at the same time, thus conflicting with uplink transmission and causing discarded or failed transmissions. Additionally, without indicating whether UE is to use uplink frequency band and sidelink frequency band to perform simultaneous transmission, UE may not fully utilize resources on either frequency band or both frequency bands, which may reduce signaling throughput.

[0042] The technology described herein supports performing uplink switching between an uplink frequency band and a sidelink frequency band, which can increase signaling throughput, improve spectrum efficiency, and improve resource utilization. In some examples, the UE may send a capability message indicating the UE's ability to perform uplink switching between an uplink frequency band and a sidelink frequency band. In some examples, the UE may be able to communicate independently via an uplink frequency band, independently via a sidelink frequency band, or simultaneously via an uplink frequency band and a sidelink frequency band. The UE may receive a grant for scheduling an uplink message sent via a set of one or more transmit ports. If the UE cannot use a transmit port and the scheduled frequency band to send an uplink message, the UE may switch from using the uplink frequency band to using the sidelink frequency band, and the UE may use the sidelink frequency band to send an uplink message accordingly.

[0043] Various aspects of the present disclosure are first described in the context of a wireless communication system. Subsequently, various aspects of the present disclosure are described in the context of a process flow. Various aspects of the present disclosure are further illustrated by and described with reference to device diagrams, system diagrams, and flow diagrams related to uplink transmission switching for sidelink frequency bands and uplink frequency bands.

[0044] Figure 1An example of a wireless communication system 100 that supports uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is illustrated. 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 according to other systems and radio technologies (including future systems and radio technologies not explicitly mentioned herein).

[0045] The network entities 105 may be dispersed throughout a geographic area to form the wireless communication system 100, and may include devices in different forms or with different capabilities. In various examples, the network entities 105 may be referred to as network elements, mobility elements, radio access network (RAN) nodes, or network equipment, etc. In some examples, the network entities 105 and the UE 115 may communicate wirelessly via one or more communication links 125 (e.g., radio frequency (RF) access links). For example, the network entity 105 may support a coverage area 110 (e.g., a geographic coverage area) within which the UE 115 and the network entity 105 may establish one or more communication links 125. The coverage area 110 may be an example of a geographic area within which the network entity 105 and the UE 115 may support signal communications according to one or more radio access technologies (RATs).

[0046] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary or mobile, or stationary and mobile at different times. The UEs 115 may be devices in different forms or with different capabilities. Figure 1 Some example UEs 115 are illustrated in FIG. 1. The UEs 115 described herein may be capable of supporting communication with various types of devices, such as Figure 1 Communicate with other UEs 115 or network entities 105) as shown.

[0047] As described herein, a node of the wireless communication system 100 (which may be referred to as a network node or a wireless node) may be a network entity 105 (e.g., any network entity described herein), a UE 115 (e.g., any UE described herein), a network controller, an apparatus, a device, a computing system, one or more components, or another suitable processing entity configured to perform any of the techniques described herein. For example, the node may be a UE 115. As another example, the node may be a network entity 105. As another example, a first node may be configured to communicate with a second node or a third node. In one aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a UE 115. In another aspect of this example, the first node may be a UE 115, the second node may be a network entity 105, and the third node may be a network entity 105. In other aspects of this example, the first node, the second node, and the third node may be different relative to these examples. Similarly, references to UE 115, network entity 105, apparatus, device, computing system, etc. may include disclosure of UE 115, network entity 105, apparatus, device, computing system, etc. as nodes. For example, a disclosure that UE 115 is configured to receive information from network entity 105 also discloses that the first node is configured to receive information from a second node.

[0048] In some examples, the network entities 105 may communicate with the core network 130, or with each other, or both. For example, the network entities 105 may communicate with the 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, the network entities 105 may directly (e.g., directly between the network entities 105) or indirectly (e.g., via the core network 130) communicate wirelessly with each other via the backhaul communication link 120 (e.g., according to X2, Xn, or other interface protocols). In some examples, the network entities 105 may communicate wirelessly with each other via the midhaul communication link 162 (e.g., according to the midhaul interface protocol) or the fronthaul communication link 168 (e.g., according to the fronthaul interface protocol) or any combination thereof. The backhaul communication link 120, the midhaul communication link 162, or the fronthaul communication link 168 may be or include one or more wired links (e.g., electrical links, optical fiber links), one or more wireless links (e.g., radio links, wireless optical links), etc. or various combinations thereof. UE 115 may communicate with core network 130 via communication link 155 .

[0049] One or more of the network entities 105 described herein may include or may be referred to as a base station 140 (e.g., a transceiver base station, a radio base station, an NR base station, an access point, a radio transceiver, a Node B, an evolved Node B (eNB), a next generation Node B, or a Gigabit Node B (any of which may be referred to as a gNB), a 5G NB, a next generation eNB (ng-eNB), a Home Node B, a Home Evolved Node B, or other suitable terms). In some examples, the network entity 105 (e.g., a 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 physically or logically integrated within a single network entity 105 (e.g., a single RAN node, such as a base station 140).

[0050] In some examples, the network entity 105 can be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that can be configured to utilize a protocol stack that is physically or logically distributed between 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, the network entity 105 can 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 (near RT RIC), a non-real-time RIC (non-RT RIC)), a service management and orchestration (SMO) 180 system, or any combination thereof. The RU 170 may also be referred to as a radio head, a smart radio head, a remote radio head (RRH), a remote radio unit (RRU), or a transmit receive point (TRP). One or more components of the network entity 105 in the decomposed RAN architecture may be co-located, or one or more components of the network entity 105 may be located in distributed locations (e.g., separate physical locations). In some examples, one or more network entities 105 of the decomposed RAN architecture may be implemented as virtual units (e.g., virtual CU (VCU), virtual DU (VDU), virtual RU (VRU)).

[0051] The functional split between CU 160, DU 165, and RU 170 is flexible and can support different functionality, 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 functional split of the protocol stack can be employed between CU 160 and DU 165, such that CU 160 can support one or more layers of the protocol stack and DU 165 can 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)) functionality and signaling (e.g., radio resource control (RRC), service data adaptation protocol (SDAP), packet data convergence protocol (PDCP)). The CU 160 may be connected to one or more DUs 165 or RUs 170, and the one or more DUs 165 or RUs 170 may 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 may each be at least partially controlled by the CU 160. Additionally or alternatively, a functional split of the protocol stack may be employed between the DU 165 and the RU 170, such that the DU 165 may support one or more layers of the protocol stack, and the RU 170 may support one or more different layers of the protocol stack. The DU 165 may support one or more different cells (e.g., via one or more RUs 170). In some cases, the functional split between CU 160 and DU 165 or between DU 165 and RU 170 may be within a protocol layer (e.g., some functions of a protocol layer may be performed by one of CU 160, DU 165, or RU 170, while other functions of the protocol layer are performed by different ones of CU 160, DU 165, or RU 170). CU 160 may be further functionally split into CU control plane (CU-CP) functions and CU user plane (CU-UP) functions. CU 160 may be connected to one or more DUs 165 via midhaul communication links 162 (e.g., F1, F1-c, F1-u), and DU 165 may be connected to one or more RUs 170 via fronthaul communication links 168 (e.g., an open fronthaul (FH) interface). In some examples, midhaul communication link 162 or fronthaul communication link 168 may be implemented based on an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 105 that communicate via such communication links.

[0052] In some wireless communication systems (e.g., wireless communication system 100), 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 nodes 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 DUs 165 or one or more RUs 170 may be controlled in part by one or more CUs 160 associated with a donor network entity 105 (e.g., a 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 nodes 104) via supported access and backhaul links (e.g., backhaul communication links 120). The IAB node 104 may include an IAB mobile terminal (IAB-MT) controlled (e.g., scheduled) by a coupled IAB donor's DU 165. The IAB-MT may include an independent set of antennas for relaying communications with the UE 115, or may share the same antennas of the IAB node 104 (e.g., of the RU 170) for access via the DU 165 of the IAB node 104 (e.g., referred to as a virtual IAB-MT (vIAB-MT)). In some examples, the 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 the IAB node 104) may be configured to operate according to the techniques described herein.

[0053] In the case where the techniques described herein are applied to the context of a decomposed RAN architecture, one or more components of the decomposed RAN architecture may be configured to support uplink transmission switching for sidelink frequency bands and uplink frequency bands 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).

[0054] UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable term, where a "device" may also be referred to as a unit, a station, a terminal, or a client, etc. UE 115 may also include or may be referred to as a personal electronic device, such as a cellular phone, a personal digital assistant (PDA), a tablet computer, a laptop computer, or a personal computer. In some examples, UE 115 may include or may be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communication (MTC) device, etc., which may be implemented in various objects such as electrical appliances or vehicles, meters, etc.

[0055] The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115 that may sometimes act as relays, as well as network entities 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 shown.

[0056] The UE 115 and the network entity 105 may 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" may refer to a collection of RF spectrum resources having a physical layer structure defined for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion of an RF spectrum band (e.g., a bandwidth portion (BWP)) that operates according to one or more physical layer channels for a given radio access technology (RAT) (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 for coordinating carrier operations, user data, or other signaling. The wireless communication system 100 may support communications with the UE 115 using carrier aggregation or multi-carrier operation. Depending on the carrier aggregation configuration, the UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation may be used for use with both frequency division duplex (FDD) and time division duplex (TDD) component carriers. Communication between the network entity 105 and other devices may refer to communication between these devices and any part (e.g., entity, sub-entity) of the network entity 105. For example, the terms "send", "receive", or "communicate" when referring to the network entity 105 may refer to any part of the network entity 105 (e.g., base station 140, CU 160, DU 165, RU 170) of the RAN communicating with another device (e.g., directly or via one or more other network entities 105).

[0057] In some examples, such as in a carrier aggregation configuration, a carrier may have acquisition signaling or control signaling that coordinates the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute RF Channel Number (EARFCN)) and may be identified based on a channel raster used for discovery by UE 115. A carrier may operate in a standalone mode, in which case initial acquisition and connection may be made by UE 115 via the carrier, or in a non-standalone mode, in which case a different carrier (e.g., of the same or different RAT) is used to anchor the connection.

[0058] The communication link 125 shown in the wireless communication system 100 may include downlink transmissions (e.g., forward link transmissions) from the network entity 105 to the UE 115, uplink transmissions (e.g., return link transmissions) from the UE 115 to the network entity 105, or both, etc. A carrier may carry either downlink communications or uplink communications (e.g., in FDD mode), or may be configured to carry both downlink communications and uplink communications (e.g., in TDD mode).

[0059] A carrier may be associated with a particular bandwidth of the RF spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a set of bandwidths for carriers for a particular RAT (e.g., 1.4 megahertz (MHz), 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz). A device of the wireless communication system 100 (e.g., a network entity 105, a UE 115, or both) may have a hardware configuration that supports communications using a particular carrier bandwidth, or may be capable of being configured to support communications using one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a network entity 105 or a UE 115 that supports concurrent communications using carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate using a portion (e.g., a subband, a BWP) or all of a carrier bandwidth.

[0060] The signal waveform transmitted via the carrier wave may be composed of multiple subcarriers (e.g., using a multi-carrier modulation (MCM) technique, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may refer to a resource of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, in which case the symbol period and the 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 coding rate of the modulation scheme, or both), so that a relatively high number of resource elements (e.g., in the transmission duration) and a relatively high order modulation scheme may correspond to a relatively high communication rate. Wireless communication resources may refer to a combination of RF spectrum resources, time 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.

[0061] One or more parameter sets for a carrier may be supported, and the parameter sets may include subcarrier spacing (Δf) and cyclic prefixes. A carrier may be divided into one or more BWPs with the same or different parameter sets. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications of a UE 115 may be constrained to one or more active BWPs.

[0062] The time interval for the network entity 105 or the UE 115 may be expressed as a multiple of a basic time unit, which may be, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, for which Δf max It can represent the supported subcarrier spacing, and N f The supported discrete Fourier transform (DFT) size may be indicated. The time intervals of the communication resources may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms)). Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023).

[0063] 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 be divided into subframes (e.g., in the time domain), and each subframe may be further divided into a certain 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 certain number of symbol periods (e.g., depending on the length of the cyclic prefix appended in front of each symbol period). In some wireless communication systems 100, the time slot may be further divided into a plurality of 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., N f The duration of a symbol period may depend on the subcarrier spacing or the operating frequency band.

[0064] A subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0065] According to various techniques, physical channels may be multiplexed using carriers for communication. Physical control channels and physical data channels may be multiplexed for signaling via downlink carriers, for example, using one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) of a physical control channel may be defined by a set of symbol periods and may extend across a system bandwidth of a carrier or a subset of that system bandwidth. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more UEs in UE 115 may monitor or search a control region to obtain control information according to one or more search space sets, and each search space set may include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. The aggregation level of a control channel candidate may 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 sets may include a common search space set configured for transmitting control information to multiple UEs 115 , and a UE-specific search space set for transmitting control information to a specific UE 115 .

[0066] The 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 the network entity 105 (e.g., using a carrier), and may be associated with an identifier (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other cell identifier) ​​used to distinguish adjacent cells. In some examples, a cell may also refer to a coverage area 110 or a portion of a coverage area 110 (e.g., a sector) on which the logical communication entity operates. Depending on various factors such as the capabilities of the network entity 105, 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 a building, a subset of a building, or an external space between or overlapping coverage areas 110, and the like.

[0067] A macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs 115 that have service subscriptions with a network provider that supports the macro cell. Small cells may be associated with lower power network entities 105 (e.g., lower power base stations 140) than macro cells, and small cells may operate using the same or different (e.g., licensed, unlicensed) frequency bands as macro cells. Small cells may provide unrestricted access to UEs 115 that have service subscriptions with a network provider, or may provide restricted access to UEs 115 associated with small cells (e.g., UEs 115 in a closed subscriber group (CSG), UEs 115 associated with users in a home or office). A network entity 105 may support one or more cells, and may also use one or more component carriers to support communications via one or more cells.

[0068] In some examples, a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB)) that may provide access to different types of devices.

[0069] In some examples, the network entities 105 (e.g., base stations 140, RUs 170) may be mobile and thus provide communication coverage for 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 provide coverage for various coverage areas 110 using the same or different radio access technologies.

[0070] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automated communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a network entity 105 (e.g., base station 140) without human intervention. In some examples, M2M communication or MTC may include communication from devices with integrated sensors or meters to measure or capture information and relay such information to a central server or application that uses the information or presents the information to a person interacting with the application. Some UEs 115 may be designed to collect information or implement automated behavior of machines or other devices. Examples of applications for MTC devices include: smart metering, inventory monitoring, water level monitoring, equipment monitoring, health care monitoring, wildlife monitoring, weather and geographic event monitoring, queue management and tracking, remote security sensing, physical access control, and transaction-based commercial charging.

[0071] Some UEs 115 may be configured to employ an operating mode that reduces power consumption, such as half-duplex communication (e.g., a mode that supports unidirectional communication via transmission or reception but does not transmit and receive concurrently). In some examples, half-duplex communication may be performed with a reduced peak rate. Other power conservation techniques for UEs 115 include entering a power-saving deep sleep mode when not engaged in active communications, operating using limited bandwidth (e.g., according to narrowband communications), or a combination of these techniques. For example, some UEs 115 may be configured to operate using a narrowband protocol type that is associated with a defined portion or range (e.g., a set of subcarriers or resource blocks (RBs)) within a carrier, within a guard band of a carrier, or outside a carrier.

[0072] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC). UE 115 can be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication can include private communication or group communication, and can be supported by one or more services (such as push-to-talk, video or data). Support for ultra-reliable, low-latency functions can include prioritization of services, and such services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency and ultra-reliable low-latency can be used interchangeably in this article.

[0073] In some examples, the UE 115 may be configured to support communication directly with other UEs 115 via a device-to-device (D2D) communication link 135 (e.g., according to a peer-to-peer (P2P), D2D, or sidelink protocol). In some examples, one or more UEs 115 in a group that are performing D2D communication may be within a coverage area 110 of a network entity 105 (e.g., a base station 140, a RU 170), which may support aspects of such D2D communication configured (e.g., scheduled) by the network entity 105. In some examples, one or more UEs 115 in such a group may be outside of the coverage area 110 of the network entity 105, or may otherwise be unable or not configured to receive transmissions from the network entity 105. In some examples, a group of UEs 115 communicating via D2D communication may support a one-to-many (1:M) system, in which each UE 115 transmits to each of the other UEs 115 in the group. In some examples, network entity 105 may facilitate scheduling of resources for D2D communications. In some other examples, D2D communications may be performed between UEs 115 without involving network entity 105.

[0074] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, the vehicles can communicate using vehicle-to-vehicle (V2X) communication, vehicle-to-vehicle (V2V) communication, or some combination of these items. The vehicle can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, the vehicles in the V2X system can communicate with roadside infrastructure (such as roadside units), or can communicate with the network using vehicle-to-network (V2N) communication via one or more network nodes (e.g., network entity 105, base station 140, RU170), or both.

[0075] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an 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), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnecting to an external network. The control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management of UE 115 served by a network entity 105 (e.g., a base station 140) associated with the core network 130. User IP packets may be delivered through a user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to the IP service 150 of one or more network operators. IP services 150 may include access to the Internet, an intranet, an IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0076] The wireless communication system 100 may operate using one or more frequency bands that may be in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Generally speaking, the region from 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band because the wavelength ranges from about 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 may be sufficient to penetrate structures so that macro cells provide services to UEs 115 located indoors. Communications using UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to communications using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0077] The wireless communication system 100 can also operate in a super high frequency (SHF) region (also known as a centimeter band) in the range of 3 GHz to 30 GHz or in an extremely high frequency (EHF) region (e.g., 30 GHz to 300 GHz) (also known as a millimeter band) using a spectrum. In some examples, the wireless communication system 100 can support millimeter wave (mmW) communication between UE 115 and network entity 105 (e.g., base station 140, RU 170), and the EHF antenna of the corresponding device can be smaller and closer than the UHF antenna. In some examples, such technology can facilitate the use of antenna arrays within the device. However, the propagation of EHF transmissions may be affected by even greater attenuation and shorter range than SHF or UHF transmissions. The technology disclosed herein can be adopted across transmissions using one or more different frequency zones, and the use of frequency bands specified across these frequency zones can vary by country or regulatory agency.

[0078] The wireless communication system 100 can utilize both licensed RF spectrum bands and unlicensed RF spectrum bands. For example, the wireless communication system 100 can adopt licensed assisted access (LAA), LTE-unlicensed (LTE-U) RAT, or NR technology using unlicensed bands (such as, 5GHz Industrial, Scientific and Medical (ISM) band). When operating using unlicensed RF spectrum bands, devices such as network entity 105 and UE 115 can use carrier sensing for conflict detection and avoidance. In some examples, operations using unlicensed bands can be based on carrier aggregation configuration (e.g., LAA) in combination with component carriers operating using licensed bands. Operations using unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0079] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the network entity 105 or UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations 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, antennas or antenna arrays associated with the network entity 105 may be located at different geographic locations. The network entity 105 may include an antenna array having a collection of multiple rows and columns of antenna ports that the network entity 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may include one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support RF beamforming for signals sent via the antenna ports.

[0080] Beamforming (which may also be referred to as spatial filtering, directional transmission, or directional reception) is a signal processing technique that may be used at a sender device or a receiver device (e.g., network entity 105, UE 115) to shape or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the sender device and the receiver device. Beamforming may be achieved by combining signals conveyed via antenna elements of an antenna array so that some signals propagating along a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals conveyed via antenna elements may include the sender device or the receiver device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of these antenna elements may be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the sender device or the receiver device or relative to some other orientation).

[0081] UE 115 and network entity 105 can support retransmission of data to increase the possibility of data being successfully received. Hybrid automatic repeat request (HARQ) feedback is a technology for increasing the possibility of correctly receiving data via a communication link (e.g., communication link 125, D2D communication link 135). HARQ can include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device can support the same time slot HARQ feedback, in which case the device can provide HARQ feedback for data received via the previous symbol in the time slot in a specific time slot. In some other examples, the device can provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0082] In some examples, UE 115 can perform uplink transmission switching between two frequency bands (e.g., two different frequency bands). In some cases, enabling UE 115 to dynamically perform uplink transmission switching can increase uplink throughput. For example, if UE 115 can use multiple frequency bands to perform transmission, UE 115 can switch to a frequency band with less business or related to high quality. In some cases, UE 115 can perform uplink switching from an uplink frequency band (e.g., a normal uplink frequency band) to a sidelink frequency band. In order to switch from an uplink frequency band to a sidelink frequency band and increase uplink throughput in this way, UE 115 can schedule uplink messages on the uplink frequency band and the sidelink frequency band without conflicting with other transmissions, and in some cases, realize simultaneous transmission via the uplink frequency band and the sidelink frequency band. For example, instead of receiving explicit signaling from the network entity 105 indicating the switching frequency band, the network entity 105 may schedule uplink message transmissions on the uplink frequency band or the sidelink frequency band, wherein if the UE 115 cannot transmit the uplink message on the scheduled frequency band using the required transmission port number, then the scheduling on the given frequency band may trigger the switching. In some examples, the UE 115 may perform at most two transmissions using the uplink frequency band and the sidelink frequency band. Additionally or alternatively, the network entity 105 may schedule no more than two transmissions using the uplink frequency band and the sidelink frequency band.

[0083] In some examples, UE 115 may send a capability message indicating the ability of UE 115 to perform uplink switching between an uplink frequency band and a sidelink frequency band. In some examples, UE 115 may be able to communicate independently via the uplink frequency band, independently via the sidelink frequency band, or simultaneously via the uplink frequency band and the sidelink frequency band. UE 115 may receive a grant for scheduling uplink message transmission via a set of one or more transmit ports. If UE 115 cannot use the transmit port and the scheduled frequency band to send an uplink message, UE 115 may switch from using the uplink frequency band to using the sidelink frequency band, and UE 115 may use the sidelink frequency band to send an uplink message accordingly.

[0084] Figure 2 An example of a wireless communication system 200 that supports uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100, or can be implemented by aspects of the wireless communication system 100. For example, the wireless communication system 200 can include a UE 115-a and a network entity 105-a, which can be examples of corresponding devices as described herein. In some examples, the UE 115-a can support communication via the uplink frequency band 225, the sidelink frequency band 230, or both.

[0085] The wireless communication system 200 may support communication between the network entity 105-a and the UE 115-a. For example, the network entity 105-a may communicate signals (e.g., uplink transmissions and downlink transmissions) with the UE 115-a via a corresponding communication link 205, which may be a reference Figure 1 An example of the communication link 125 is shown. In addition, the UE 115-a can communicate with the network entity 105-a via the uplink frequency band 225, the sidelink frequency band 230, or both.

[0086] UE 115-a may be able to perform uplink switching between uplink frequency band 225 and sidelink frequency band 230. In some examples, UE 115-a may send a capability message 210 indicating the capabilities of UE 115-a to network entity 105-a. Additionally, capability message 210 may indicate the ability of UE 115-a to perform uplink transmissions using one or more of: uplink frequency band 225, sidelink frequency band 230, or both uplink frequency band 225 and sidelink frequency band 230.

[0087] In some cases, the UE 115-a may receive a grant 215 (e.g., an uplink grant) from the network entity 105-a that schedules an uplink message 220 for transmission via a set of one or more transmit ports of the UE 115-a. For example, the network entity 105-a may schedule the transmission of the uplink message 220 using the uplink frequency band 225 and via the one or more transmit ports. In some cases, the UE 115-a may not be able to transmit the uplink message 220 via the uplink frequency band 225 using the desired set of one or more transmit ports. For example, if the UE 115-a uses the set of one or more transmit ports indicated in the grant 215, the UE 115-a may lack sufficient power to transmit the uplink message 220 using the uplink frequency band 225. Thus, based on the UE 115-a being able to switch between frequency bands and assuming that the UE 115-a is able to successfully transmit the uplink message 220 via the sidelink frequency band 230 and using the set of one or more transmit ports indicated in the grant 215, the UE 115-a may switch the transmitter 235 of the UE 115-a from the uplink frequency band 225 to the sidelink frequency band 230. Based on performing the switch, the UE 115-a may send the uplink message 220 to the network entity 105-a using the sidelink frequency band 230.

[0088] In some cases, the UE 115-a and the network entity 105-a may operate according to a mode (e.g., sidelink mode 2) in which the network entity 105-a schedules sidelink transmissions between the UE 115-a and other devices. In such cases, a set of resources may be reserved in the sidelink frequency band 230 during which the network entity 105-a does not schedule sidelink transmissions, and the UE 115-a may make a transmission decision (e.g., determine to use a particular frequency band to perform uplink transmissions) based on the set of reserved resources. This may enable the UE 115-a to avoid scheduling conflicting uplink transmissions on the uplink frequency band 225 and the sidelink frequency band 230. For example, operating in mode 2, the UE 115-a may reuse a physical uplink control channel (PUCCH) previously used for sidelink transmissions and retransmissions to send an uplink message 220 on the sidelink frequency band 230, which may be based on the resources reserved in the sidelink frequency band 230. T.

[0089] In some examples, the network entity 105-a may schedule the grant 215, and the UE 115-a may accordingly attempt to switch the transmitter 235 from the uplink frequency band 225 to the sidelink frequency band 230. Based on the switch, the UE 115-a may send a PUCCH to the network entity 105-a including a feedback report. If the UE 115-a successfully switches the transmitter 235 from the uplink frequency band 225 to the sidelink frequency band 230, the feedback report may include an acknowledgment (ACK) message. That is, the UE 115-a may send a feedback report associated with the grant to the network entity 105-a over the sidelink frequency band 230 based on switching the transmitter 235, wherein the feedback report indicates that the switch was successful (e.g., a conflict was avoided). Alternatively, if UE 115-a detects a conflict associated with uplink message 220 of sidelink frequency band 230 based on the switch (e.g., if UE 115-a is unable to transmit uplink message 220 via sidelink frequency band 230 because another transmission has been scheduled via sidelink frequency band 230 at the same time), UE 115-a may report a negative acknowledgement (NACK). For example, UE 115-a may transmit a feedback report associated with grant 215 via sidelink frequency band 230 based on the switch transmitter 235, wherein the feedback report indicates a conflict associated with uplink message 220 on sidelink frequency band 230.

[0090] In some examples, as an alternative to sending a NACK in the feedback report based on detecting a conflict, the UE 115-a may refrain from sending the feedback report, and the network entity 105-a may make a switching decision at a later time. That is, the UE 115-a may retain the feedback report associated with the grant 215 through the sidelink band 230 based on the conflict associated with the uplink message 220 on the sidelink band 230. Additionally or alternatively, the UE 115-a may reserve a plurality of future time slots (e.g., a reservation window) of the sidelink band 230, during which the network entity 105-a may not be able to schedule the switching if the initial switching of the transmitter 235 from the uplink band 225 to the sidelink band 230 fails. That is, the UE 115-a may reserve one or more future time slots of the sidelink band 230 for sending the uplink message 220 based on the grant 215, so that the UE 115-a effectively schedules the sending of the uplink message 220 instead of the network entity 105-a.

[0091] In some cases, the wireless communication system 200 may support LTE and NR TDM coexistence. Based on the coexistence, the uplink message 220 may be associated with a first RAT (e.g., NR or LTE) and scheduled for resources associated with a second RAT (e.g., NR or LTE) on the sidelink frequency band 230. For example, if the UE 115-a supports NR communication (e.g., NR UE) and is unable to report the ability to perform LTE sidelink communication, the network entity 105-a supporting NR communication (e.g., NR base station) may use resources reserved for LTE sidelink communication to send the uplink message 220 via the sidelink frequency band 230. Alternatively, if the UE 115-a supports LTE communication (e.g., LTE UE) and is unable to report the ability to perform NR sidelink communication, the network entity 105-a supporting LTE communication (e.g., LTE base station) may use resources reserved for NR sidelink communication to send the uplink message 220 via the sidelink frequency band 230.

[0092] Alternatively, to avoid conflicting scheduling on uplink frequency band 225 and sidelink frequency band 230, uplink message 220 may be associated with a set of resources on sidelink frequency band 230 that are excluded from sidelink communication. That is, UE 115-a may perform uplink transmission using the excluded resources. In some examples, the set of resources excluded from sidelink communication may cover the entire sidelink frequency band 230, and the set of resources (e.g., reserved time slots or symbols) may be used for transmissions in other frequency bands (e.g., uplink frequency band 225). If the set of excluded resources appears in one or more subchannels (e.g., rather than across the entire bandwidth), switching from uplink frequency band 225 to sidelink frequency band 230 may conflict with one or more scheduled sidelink transmissions on sidelink frequency band 230. In this way, network entity 105-a may exclude some resources in a particular frequency for uplink transmission, and therefore, UE 115-a may fail to reserve the excluded resources for sidelink transmission.

[0093] As described herein, UE 115-a may be able to perform uplink transmission using one or more of the following: uplink frequency band 225, sidelink frequency band 230, or uplink frequency band 225 and sidelink frequency band 230 simultaneously. That is, UE 115-a may be configured to perform one uplink transmission on one frequency band at a time, or to perform simultaneous uplink transmission on multiple frequency bands. In some cases, UE 115-a may be able to perform simultaneous uplink transmission on two frequency bands (e.g., uplink frequency band 225 and sidelink frequency band 230) associated with the same timing advance group (TAG) or different TAGs. Accordingly, UE 115-a may be able to support multiple TAGs that may correspond to uplink frequency band groups and sidelink frequency band groups. Thus, the UE 115 - a may send in the capability message 210 an indication of the number or set of TAGs supported by the UE 115 - a for simultaneous uplink transmission over the uplink frequency band 225 and the sidelink frequency band 230 .

[0094] In some examples, UE 115-a and network entity 105-a may operate according to a first mode (e.g., mode 1) in which network entity 105-a may schedule uplink transmissions in one or more resources of sidelink frequency band 230. In some cases, when operating in the first mode, UE 115-a may avoid conflicting scheduling on uplink frequency band 225 and sidelink frequency band 230. If the sidelink network entity and the uplink network entity (e.g., a sidelink base station and an uplink base station associated with network entity 105-a) are collocated, network entity 105-a may be aware of scheduling for uplink frequency band 225 and sidelink frequency band 230 and ensure that there is no conflicting scheduling between the frequency bands. For example, network entity 105-a may schedule up to two transmissions using uplink frequency band 225 and sidelink frequency band 230 simultaneously. That is, the network entity 105 - a may incur 3 transmission (Tx) violations, where the network entity 105 - a may schedule no more than two uplink transmissions using the uplink frequency band 225 and the sidelink frequency band 230 .

[0095] If the sidelink network entity and the uplink network entity are non-colocated, the network entity 105-a may be aware of the scheduling decision of another cell (e.g., another network entity) having a different TA value. For example, the network entity 105-a may be aware of the TA associated with uplink transmissions scheduled via the sidelink frequency band 230 without knowing the actual timing information of these transmissions. Based on the TA value, the network entity 105-a may extend the switching gap (e.g., the time period during which the UE 115-a may switch from the uplink frequency band 225 to the sidelink frequency band 230) to a switching period with the same TAG and the same maximum transmit timing difference (MTTD) (e.g., the maximum timing difference of the TAG), wherein the switching period may be long enough to enable the UE 115-a to successfully switch from the uplink frequency band 225 to the sidelink frequency band 230. That is, the network entity 105-a can configure the switching gap between the time when the UE 115-a receives the grant 215 and the time when the uplink message 220 is sent based on the switching period and the defined MTTD between the uplink frequency band 225 and the sidelink frequency band 230 in the same TAG. In this way, the network entity 105-a can schedule uplink transmissions via the uplink frequency band 225 and the sidelink frequency band 230 to avoid conflicts.

[0096] Figure 3 An example of a process flow 300 for supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is illustrated. The process flow 300 may implement aspects of the wireless communication systems 100 and 200, or may be implemented by aspects of the wireless communication systems 100 and 200. For example, the process flow 300 may illustrate operations between a UE 115-b and a network entity 105-b (which may be examples of corresponding devices described herein). In the following description of the process flow 300, the operations between the UE 115-b and the network entity 105-b may be sent in an order different from the example order shown, or the operations performed by the UE 115-b and the network entity 105-b may be performed in a different order or at different times. Some operations may also be omitted from the process flow 300, and other operations may be added to the process flow 300.

[0097] At 305, UE 115-b may send a capability message to network entity 105-b indicating the ability of UE 115-b to perform uplink switching between an uplink frequency band and a sidelink frequency band. In some examples, the capability message may additionally indicate the ability of UE 115-b to perform uplink transmissions on the uplink frequency band, on the sidelink frequency band, or on both the uplink frequency band and the sidelink frequency band. That is, UE 115-b may be able to perform simultaneous transmissions on the uplink frequency band and the sidelink frequency band, where no more than two uplink transmissions may be scheduled on these frequency bands. Capability message 305 may include, for example, a UE capability information element sent to network entity 105-b via RRC or other higher layer signaling.

[0098] At 310, UE 115-b may receive a grant from network entity 105-b to schedule an uplink message for transmission via a set of one or more transmit ports of UE 115-b. In some examples, network entity 105-a may schedule uplink message transmission on an uplink frequency band.

[0099] At 315, UE 115-b may switch a transmitter of UE 115-b from the uplink frequency band to the sidelink frequency band based on the set of one or more transmit ports and the capability message. For example, if UE 115-b is unable to transmit an uplink message (scheduled by network entity 105-b) on the uplink frequency band using the set of one or more transmit ports indicated in the grant, UE 115-b may switch the transmitter to the sidelink frequency band.

[0100] At 320, UE 115-b may send a feedback report associated with the grant to network entity 105-b over the sidelink frequency band based on switching the transmitter of UE 115-b. In some examples, the feedback report may include an ACK message indicating that the switch was successful. Alternatively, the feedback report may include a NACK message indicating that the switch was not successful (e.g., switching the uplink message transmission to the sidelink frequency band may conflict with another transmission already scheduled on the sidelink frequency band). In some examples, if the switch is not successful, UE 115-b may prevent any feedback reports from being sent to network entity 105-b.

[0101] At 325, UE 115-b may send an uplink message to network entity 105-b based on the grant and based on switching to use the sidelink frequency band. That is, based on switching the transmitter from the uplink frequency band to the sidelink frequency band, and if UE 115-b is able to perform uplink transmission using the set of one or more transmit ports indicated in the grant on the sidelink frequency band, UE 115-b may send the uplink message accordingly.

[0102] Figure 4 A block diagram 400 of a device 405 supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The device 405 can be an example of aspects of a UE 115 as described herein. The device 405 can include a receiver 410, a transmitter 415, and a communication manager 420. The device 405 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0103] The receiver 410 may provide means for receiving information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to uplink transmission switching for sidelink frequency bands and uplink frequency bands), user data, control information, or any combination thereof. The information may be delivered to other components of the device 405. The receiver 410 may utilize a single antenna or a collection of multiple antennas.

[0104] The transmitter 415 may provide means for transmitting signals generated by other components of the device 405. For example, the transmitter 415 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to uplink transmission switching for sidelink frequency bands and uplink frequency bands), user data, control information, or any combination thereof. In some examples, the transmitter 415 may be co-located with the receiver 410 in a transceiver module. The transmitter 415 may utilize a single antenna or a collection of multiple antennas.

[0105] The communication manager 420, the receiver 410, the transmitter 415, or various combinations thereof or various components thereof may be examples of means for performing various aspects of uplink transmission switching for sidelink frequency bands and uplink frequency bands as described herein. For example, the communication manager 420, the receiver 410, the transmitter 415, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0106] In some examples, the communication manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit system). The hardware may include a processor, a digital signal processor (DSP), a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that is configured to or otherwise supports components for performing the functions described herein. In some examples, a processor and a memory coupled to the processor may be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0107] Additionally or alternatively, in some examples, the communication manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 420, the receiver 410, the transmitter 415, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functionality described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0108] In some examples, communication manager 420 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 410, transmitter 415, or both. For example, communication manager 420 can receive information from receiver 410, transmit information to transmitter 415, or integrate with receiver 410, transmitter 415, or both to obtain information, output information, or perform various other operations as described herein.

[0109] According to the examples disclosed herein, the communication manager 420 may support wireless communications. For example, the communication manager 420 may be configured to or otherwise support a component for sending a capability message indicating the UE's ability to perform uplink switching between an uplink frequency band and a sidelink frequency band. The communication manager 420 may be configured to or otherwise support a component for receiving a grant for scheduling an uplink message to be sent through a set of one or more transmit ports. The communication manager 420 may be configured to or otherwise support a component for switching a transmitter of the UE from an uplink frequency band to a sidelink frequency band based on a set of one or more transmit ports and a capability message. The communication manager 420 may be configured to or otherwise support a component for sending an uplink message based on the grant and based on the switching using the sidelink frequency band.

[0110] By including or configuring a communication manager 420 according to the examples described herein, the device 405 (e.g., a processor controlling the receiver 410, the transmitter 415, the communication manager 420, or a combination thereof or otherwise coupled thereto) can support techniques for switching uplink transmissions between an uplink frequency band and a sidelink frequency band that can increase signaling throughput, reduce latency, and provide more efficient utilization of communication resources.

[0111] Figure 5 A block diagram 500 of a device 505 supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The device 505 can be an example of aspects of the device 405 or UE 115 as described herein. The device 505 can include a receiver 510, a transmitter 515, and a communication manager 520. The device 505 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0112] The receiver 510 may provide means for receiving information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to uplink transmission switching for sidelink frequency bands and uplink frequency bands), user data, control information, or any combination thereof. The information may be delivered to other components of the device 505. The receiver 510 may utilize a single antenna or a collection of multiple antennas.

[0113] The transmitter 515 may provide means for transmitting signals generated by other components of the device 505. For example, the transmitter 515 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to uplink transmission switching for sidelink frequency bands and uplink frequency bands), user data, control information, or any combination thereof. In some examples, the transmitter 515 may be co-located with the receiver 510 in a transceiver module. The transmitter 515 may utilize a single antenna or a collection of multiple antennas.

[0114] Device 505 or its various components may be examples of components for performing various aspects of uplink transmission switching for sidelink frequency bands and uplink frequency bands as described herein. For example, communication manager 520 may include capability component 525, grant component 530, switching component 535, uplink message component 540, or any combination thereof. Communication manager 520 may be an example of various aspects of communication manager 420 as described herein. In some examples, communication manager 520 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise in conjunction with receiver 510, transmitter 515, or both. For example, communication manager 520 may receive information from receiver 510, transmit information to transmitter 515, or integrate with receiver 510, transmitter 515, or both in combination to obtain information, output information, or perform various other operations as described herein.

[0115] According to the examples disclosed herein, the communication manager 520 can support wireless communication. The capability component 525 can be configured to or otherwise support a component for sending a capability message indicating the capability of the UE to perform uplink switching between the uplink frequency band and the side link frequency band. The grant component 530 can be configured to or otherwise support a component for receiving a grant for scheduling an uplink message to be sent through a set of one or more transmit ports. The switching component 535 can be configured to or otherwise support a component for switching a transmitter of the UE from an uplink frequency band to a side link frequency band based on a set of one or more transmit ports and a capability message. The uplink message component 540 can be configured to or otherwise support a component for sending an uplink message based on the grant and based on the switching using the side link frequency band.

[0116] Figure 6A block diagram 600 of a communication manager 620 supporting uplink transmission switching for sidelink frequency bands and uplink frequency bands according to one or more aspects of the present disclosure is shown. The communication manager 620 can be an example of aspects of the communication manager 420, the communication manager 520, or both as described herein. The communication manager 620 or its various components can be examples of components for performing various aspects of uplink transmission switching for sidelink frequency bands and uplink frequency bands as described herein. For example, the communication manager 620 can include a capability component 625, a grant component 630, a switching component 635, an uplink message component 640, a feedback component 645, a conflict component 650, a reservation component 655, a TA component 660, or any combination thereof. Each of these components can communicate directly or indirectly with each other (e.g., via one or more buses).

[0117] According to the examples disclosed herein, the communication manager 620 can support wireless communication. The capability component 625 can be configured to or otherwise support a component for sending a capability message indicating the capability of the UE to perform uplink switching between the uplink frequency band and the side link frequency band. The grant component 630 can be configured to or otherwise support a component for receiving a grant for scheduling an uplink message to be sent through a set of one or more transmit ports. The switching component 635 can be configured to or otherwise support a component for switching a transmitter of the UE from the uplink frequency band to the side link frequency band based on the set of one or more transmit ports and the capability message. The uplink message component 640 can be configured to or otherwise support a component for sending an uplink message based on the grant and based on the switching using the side link frequency band.

[0118] In some examples, feedback component 645 can be configured or otherwise support means for sending a feedback report associated with the grant over a sidelink frequency band based on a transmitter of the switching UE, wherein the feedback report indicates that the switching was successful.

[0119] In some examples, feedback component 645 can be configured to or otherwise support components for sending a feedback report associated with a grant over a sidelink frequency band based on a transmitter of the switching UE, wherein the feedback report indicates a conflict associated with an uplink message on the sidelink frequency band.

[0120] In some examples, conflict component 650 can be configured or otherwise support means for retaining a feedback report associated with a grant over the sidelink frequency band based on a conflict associated with an uplink message on the sidelink frequency band.

[0121] In some examples, reservation component 655 can be configured or otherwise support means for reserving one or more future time slots of the sidelink frequency band for sending uplink messages based on the grant.

[0122] In some examples, the uplink message is associated with the first RAT and is scheduled for resources associated with the second RAT on the sidelink frequency band. In some examples, the uplink message is associated with a set of resources on the sidelink frequency band that are excluded from sidelink communications.

[0123] In some examples, to support sending a capability message, capability component 625 can be configured as or otherwise support components for sending an indication via a capability message that the UE is capable of performing uplink transmissions using one or more of the following: an uplink frequency band, a sidelink frequency band, or both an uplink frequency band and a sidelink frequency band.

[0124] In some examples, to support sending a capability message, the TA component 660 can be configured or otherwise support means for sending an indication of the number or set of TAGs supported by the UE for simultaneous transmission over an uplink frequency band and a sidelink frequency band via a capability message.

[0125] In some examples, at most two transmissions are scheduled for the uplink frequency band and the sidelink frequency band.In some examples, a switching gap between receiving a grant and sending an uplink message is based on a switching period between frequency bands in the same TAG and a defined MTTD.

[0126] Figure 7 A diagram of a system 700 of a device 705 supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The device 705 may be an example of a device 405, a device 505, or a UE 115 as described herein, or include components thereof. The device 705 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 705 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 720, an input / output (I / O) controller 710, a transceiver 715, an antenna 725, a memory 730, a code 735, and a processor 740. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., a bus 745).

[0127] I / O controller 710 can manage input signals and output signals of device 705. I / O controller 710 can also manage peripheral devices that are not integrated into device 705. In some cases, I / O controller 710 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 710 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 710 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 710 may be implemented as part of a processor, such as processor 740. In some cases, a user may interact with device 705 via I / O controller 710 or via hardware components controlled by I / O controller 710.

[0128] In some cases, the device 705 may include a single antenna 725. However, in some other cases, the device 705 may have more than one antenna 725, which may be able to concurrently send or receive multiple wireless transmissions. As described herein, the transceiver 715 may communicate bidirectionally via one or more antennas 725, a wired link, or a wireless link. For example, the transceiver 715 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 715 may also include a modem for modulating packets, providing the modulated packets to one or more antennas 725 for transmission, and demodulating packets received from one or more antennas 725. The transceiver 715 or the transceiver 715 and the one or more antennas 725 may be examples of transmitters 415, transmitters 515, receivers 410, receivers 510, or any combination thereof or components thereof as described herein.

[0129] The memory 730 may include random access memory (RAM) and read-only memory (ROM). The memory 730 may store computer-readable, computer-executable code 735 including instructions that, when executed by the processor 740, cause the device 705 to perform various functions described herein. The code 735 may be stored in a non-transitory computer-readable medium (such as system memory or another type of memory). In some cases, the code 735 may not be directly executable by the processor 740, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 730 may also include a basic I / O system (BIOS), etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0130] The processor 740 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof). In some cases, the processor 740 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 740. The processor 740 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 730) to enable the device 705 to perform various functions (e.g., functions or tasks that support uplink transmission switching for sidelink frequency bands and uplink frequency bands). For example, the device 705 or a component of the device 705 may include a processor 740 and a memory 730 coupled to or coupled to the processor 740, and the processor 740 and the memory 730 are configured to perform the various functions described herein.

[0131] According to the examples disclosed herein, the communication manager 720 may support wireless communications. For example, the communication manager 720 may be configured to or otherwise support a component for sending a capability message indicating the ability of the UE to perform uplink switching between an uplink frequency band and a sidelink frequency band. The communication manager 720 may be configured to or otherwise support a component for receiving a grant for scheduling an uplink message to be sent through a set of one or more transmit ports. The communication manager 720 may be configured to or otherwise support a component for switching a transmitter of the UE from an uplink frequency band to a sidelink frequency band based on a set of one or more transmit ports and a capability message. The communication manager 720 may be configured to or otherwise support a component for sending an uplink message based on the grant and based on the switching using the sidelink frequency band.

[0132] By including or configuring a communication manager 720 according to the examples described herein, the device 705 can support techniques for switching uplink transmissions between uplink frequency bands and sidelink frequency bands, which can increase signaling throughput, reduce latency, and provide more efficient use of communication resources.

[0133] In some examples, the communication manager 720 can be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 715, one or more antennas 725, or any combination thereof. Although the communication manager 720 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 720 can be supported or performed by the processor 740, the memory 730, the code 735, or any combination thereof. For example, the code 735 can include instructions that can be executed by the processor 740 to cause the device 705 to perform various aspects of uplink transmission switching for the sidelink frequency band and the uplink frequency band as described herein, or the processor 740 and the memory 730 can be otherwise configured to perform or support such operations.

[0134] Figure 8 A block diagram 800 of a device 805 supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The device 805 can be an example of aspects of the network entity 105 as described herein. The device 805 can include a receiver 810, a transmitter 815, and a communication manager 820. The device 805 can also include a processor. Each of these components can communicate with each other (e.g., via one or more buses).

[0135] The receiver 810 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be delivered to other components of the device 805. In some examples, the receiver 810 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 810 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0136] The transmitter 815 may provide means for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of the device 805. For example, the transmitter 815 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) (such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units)). In some examples, the transmitter 815 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 815 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 815 and the receiver 810 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0137] The communication manager 820, the receiver 810, the transmitter 815, or various combinations thereof or various components thereof may be examples of means for performing various aspects of uplink transmission switching for sidelink frequency bands and uplink frequency bands as described herein. For example, the communication manager 820, the receiver 810, the transmitter 815, or various combinations thereof or components thereof may support methods for performing one or more of the functions described herein.

[0138] In some examples, the communication manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof can be implemented in hardware (e.g., in a communication management circuit system). The hardware can include a processor, a DSP, a CPU, an ASIC, an FPGA or other programmable logic device, a microcontroller, discrete gate or transistor logic, discrete hardware components, or any combination thereof that is configured as or otherwise supports components for performing the functions described in the present disclosure. In some examples, a processor and a memory coupled to the processor can be configured to perform one or more of the functions described herein (e.g., by executing instructions stored in the memory by the processor).

[0139] Additionally or alternatively, in some examples, the communication manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be implemented in code executed by a processor (e.g., as communication management software or firmware). If implemented in code executed by a processor, the functionality of the communication manager 820, the receiver 810, the transmitter 815, or various combinations or components thereof may be performed by a general purpose processor (e.g., configured as or otherwise supporting components for performing the functionality described in the present disclosure), a DSP, a CPU, an ASIC, an FPGA, a microcontroller, or any combination of these or other programmable logic devices.

[0140] In some examples, the communication manager 820 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 810, the transmitter 815, or both. For example, the communication manager 820 can receive information from the receiver 810, transmit information to the transmitter 815, or integrate with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.

[0141] According to examples as disclosed herein, the communication manager 820 may support wireless communications. For example, the communication manager 820 may be configured to or otherwise support a component for receiving a capability message indicating the UE's ability to perform uplink switching between an uplink frequency band and a sidelink frequency band. The communication manager 820 may be configured to or otherwise support a component for sending a grant for scheduling an uplink message to be sent through a set of one or more transmit ports. The communication manager 820 may be configured to or otherwise support a component for receiving an uplink message based on the grant and based on the UE's transmitter switching from the uplink frequency band to the sidelink frequency band using the sidelink frequency band.

[0142] By including or configuring a communication manager 820 according to the examples described herein, the device 805 (e.g., a processor controlling the receiver 810, the transmitter 815, the communication manager 820, or a combination thereof or otherwise coupled thereto) can support techniques for switching uplink transmissions between an uplink frequency band and a sidelink frequency band that can increase signaling throughput, reduce latency, and provide more efficient utilization of communication resources.

[0143] Fig. 9 A block diagram 900 of a device 905 supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The device 905 may be an example of aspects of the device 805 or the network entity 105 as described herein. The device 905 may include a receiver 910, a transmitter 915, and a communication manager 920. The device 905 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0144] The receiver 910 may provide means for obtaining (e.g., receiving, determining, identifying) information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack), such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units). The information may be delivered to other components of the device 905. In some examples, the receiver 910 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 910 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0145] The transmitter 915 may provide means for outputting (e.g., sending, providing, conveying, transmitting) information generated by other components of the device 905. For example, the transmitter 915 may output information associated with various channels (e.g., control channels, data channels, information channels, channels associated with a protocol stack) (such as user data, control information, or any combination thereof (e.g., I / Q samples, symbols, packets, protocol data units, service data units)). In some examples, the transmitter 915 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 915 may support outputting information by sending signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof. In some examples, the transmitter 915 and the receiver 910 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0146] Device 905 or its various components may be examples of components for performing various aspects of uplink transmission switching for sidelink frequency bands and uplink frequency bands as described herein. For example, communication manager 920 may include capability message component 925, scheduling component 930, uplink message component 935, or any combination thereof. Communication manager 920 may be an example of various aspects of communication manager 820 as described herein. In some examples, communication manager 920 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise in conjunction with receiver 910, transmitter 915, or both. For example, communication manager 920 may receive information from receiver 910, transmit information to transmitter 915, or integrate with receiver 910, transmitter 915, or both to obtain information, output information, or perform various other operations as described herein.

[0147] According to examples as disclosed herein, the communication manager 920 may support wireless communications. The capability message component 925 may be configured to or otherwise support components for receiving a capability message indicating the capability of the UE to perform uplink switching between an uplink frequency band and a sidelink frequency band. The scheduling component 930 may be configured to or otherwise support components for sending a grant for scheduling an uplink message to be sent through a set of one or more transmit ports. The uplink message component 935 may be configured to or otherwise support components for receiving an uplink message based on the grant and based on the UE's transmitter switching from the uplink frequency band to the sidelink frequency band using the sidelink frequency band.

[0148] Fig.10 A block diagram 1000 of a communication manager 1020 supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band is shown according to one or more aspects of the present disclosure. The communication manager 1020 can be an example of aspects of the communication manager 820, the communication manager 920, or both as described herein. The communication manager 1020 or its various components can be examples of components for performing various aspects of uplink transmission switching for a sidelink frequency band and an uplink frequency band as described herein. For example, the communication manager 1020 can include a capability message component 1025, a scheduling component 1030, an uplink message component 1035, an ACK component 1040, a NACK component 1045, a TAG component 1050, or any combination thereof. Each of these components may communicate directly or indirectly with one another (e.g., via one or more buses), which communication may include communication within a protocol layer of a protocol stack, communication associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack, within a device, component, or virtualized component associated with the network entity 105, between devices, components, or virtualized components associated with the network entity 105), or any combination thereof.

[0149] According to examples as disclosed herein, the communication manager 1020 may support wireless communications. The capability message component 1025 may be configured to or otherwise support components for receiving a capability message indicating the UE's ability to perform uplink switching between an uplink frequency band and a sidelink frequency band. The scheduling component 1030 may be configured to or otherwise support components for sending a grant for scheduling an uplink message to be sent through a set of one or more transmit ports. The uplink message component 1035 may be configured to or otherwise support components for receiving an uplink message based on the grant and based on the UE's transmitter switching from the uplink frequency band to the sidelink frequency band using the sidelink frequency band.

[0150] In some examples, ACK component 1040 can be configured or otherwise support means for receiving a feedback report associated with a grant based on a switching of a transmitter of the UE over a sidelink frequency band, wherein the feedback report indicates a successful switching.

[0151] In some examples, NACK component 1045 can be configured as or otherwise support components for receiving a feedback report associated with a grant based on switching of the UE's transmitter over a sidelink frequency band, where the feedback report indicates a conflict associated with an uplink message on the sidelink frequency band.

[0152] In some examples, to support receiving uplink messages, uplink message component 1035 may be configured or otherwise support means for receiving uplink messages based on granting one or more future time slots via the sidelink frequency band.

[0153] In some examples, the uplink message is associated with the first RAT and is scheduled for resources associated with the second RAT on the sidelink frequency band. In some examples, the uplink message is associated with a set of resources on the sidelink frequency band that are excluded from sidelink communications.

[0154] In some examples, to support receiving a capability message, TAG component 1050 can be configured as or otherwise support components for receiving an indication via a capability message that the UE is capable of performing uplink transmissions using one or more of the following: an uplink frequency band, a sidelink frequency band, or both an uplink frequency band and a sidelink frequency band.

[0155] In some examples, to support receiving a capability message, TAG component 1050 may be configured or otherwise support means for receiving, via a capability message, an indication of the number or set of TAGs supported by the UE for simultaneous transmission over an uplink frequency band and a sidelink frequency band.

[0156] In some examples, at most two transmissions are scheduled for the uplink frequency band and the sidelink frequency band.In some examples, a switching gap between sending a grant and receiving an uplink message is based on a switching period between frequency bands in the same TAG and a defined MTTD.

[0157] Fig.11A diagram of a system 1100 of a device 1105 supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The device 1105 may be an example of a device 805, a device 905, or a network entity 105 as described herein, or include components thereof. The device 1105 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which may include communication through one or more wired interfaces, through one or more wireless interfaces, or any combination thereof. The device 1105 may include components that support output and acquisition of communications, such as a communication manager 1120, a transceiver 1110, an antenna 1115, a memory 1125, a code 1130, and a processor 1135. These components may be electronically communicated or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1140).

[0158] As described herein, the transceiver 1110 may support bidirectional communication via a wired link, a wireless link, or both. In some examples, the transceiver 1110 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1110 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1105 may include one or more antennas 1115, which may be capable of (e.g., concurrently) sending or receiving wireless transmissions. The transceiver 1110 may also include a modem for: modulating a signal, providing the modulated signal for transmission (e.g., via one or more antennas 1115, via a wired transmitter), receiving the modulated signal (e.g., from one or more antennas 1115, from a wired receiver), and demodulating the signal. In some implementations, the transceiver 1110 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1115 configured to support various receiving or obtaining operations, or one or more interfaces coupled to one or more antennas 1115 configured to support various sending operations or output operations, or a combination thereof. In some implementations, the transceiver 1110 may include or be configured to be coupled to one or more processors or memory components, which are operable to perform the following operations: perform or support operations based on received or obtained information or signals, or generate information or other signals for transmission or other output, or any combination thereof. In some implementations, the transceiver 1110, or the transceiver 1110 and one or more antennas 1115, or the transceiver 1110 and one or more antennas 1115 and one or more processors or memory components (e.g., processor 1135, or memory 1125, or both) may be included in a chip or chip assembly installed in the device 1105. In some examples, the transceiver may be operable to support communications via one or more communication links (eg, communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0159] The memory 1125 may include RAM and ROM. The memory 1125 may store computer-readable, computer-executable code 1130 including instructions that, when executed by the processor 1135, cause the device 1105 to perform various functions described herein. The code 1130 may be stored in a non-transitory computer-readable medium (such as system memory or another type of memory). In some cases, the code 1130 may not be directly executable by the processor 1135, but may (e.g., when compiled and executed) cause the computer to perform the functions described herein. In some cases, the memory 1125 may also include a BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0160] The processor 1135 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, an ASIC, a CPU, an FPGA, a microcontroller, a programmable logic device, a discrete gate or transistor logic, a discrete hardware component, or any combination thereof). In some cases, the processor 1135 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into the processor 1135. The processor 1135 may be configured to execute computer-readable instructions stored in a memory (e.g., a memory 1125) to enable the device 1105 to perform various functions (e.g., functions or tasks to support uplink transmission switching for sidelink frequency bands and uplink frequency bands). For example, the device 1105 or a component of the device 1105 may include a processor 1135 and a memory 1125 coupled to the processor 1135, and the processor 1135 and the memory 1125 are configured to perform the various functions described herein. The processor 1135 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, a virtual machine, or a container instance) that can host functions (e.g., by executing code 1130) to perform functions of the device 1105. The processor 1135 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in the device 1105 (such as within the memory 1125). In some specific implementations, the processor 1135 may be a component of a processing system. A processing system may generally refer to a system or a series of machines or components that receive inputs and process these inputs to produce a set of outputs (which may be delivered to, for example, other systems or components of the device 1105). For example, the processing system of the device 1105 may refer to a system including various other components or subcomponents of the device 1105, such as the processor 1135, or the transceiver 1110, or the communication manager 1120, or other components or combinations of components of the device 1105. The processing system of device 1105 can interface with other components of device 1105 and can process information (such as input or signals) received from other components or output information to other components. For example, a chip or modem of device 1105 may include a processing system and one or more interfaces, and the one or more interfaces are used to output information or to obtain information or both. One or more interfaces may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information, or the same interface configured to output information and obtain information, and so on. In some specific implementations, one or more interfaces may refer to an interface between the processing system of the chip or modem and a transmitter, so that device 1105 can send information output from the chip or modem.Additionally or alternatively, in some implementations, one or more interfaces may refer to an interface between a processing system of a chip or modem and a receiver, such that the device 1105 may obtain information or signal input, and the information may be delivered to the processing system. One of ordinary skill in the art will readily recognize that a first interface may also obtain information or signal input, and a second interface may also output information or signal output.

[0161] In some examples, bus 1140 may support communications of a protocol layer (e.g., within a protocol layer) of a protocol stack. In some examples, bus 1140 may support communications associated with a logical channel of a protocol stack (e.g., between protocol layers of a protocol stack), which may include communications performed within a component of device 1105, or communications performed between different components of device 1105 that may be co-located or located in different locations (e.g., where device 1105 may refer to a system in which one or more of communication manager 1120, transceiver 1110, memory 1125, code 1130, and processor 1135 may be located in one of these different components or divided between different components).

[0162] In some examples, the communication manager 1120 can manage aspects of communications with the core network 130 (e.g., via one or more wired backhaul links or wireless backhaul links). For example, the communication manager 1120 can manage the delivery of data communications for client devices, such as one or more UEs 115. In some examples, the communication manager 1120 can manage communications with other network entities 105 and can include a controller or scheduler for controlling communications with the UE 115 in coordination with the other network entities 105. In some examples, the communication manager 1120 can support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0163] According to examples as disclosed herein, the communication manager 1120 may support wireless communications. For example, the communication manager 1120 may be configured to or otherwise support a component for receiving a capability message indicating the UE's ability to perform uplink switching between an uplink frequency band and a sidelink frequency band. The communication manager 1120 may be configured to or otherwise support a component for sending a grant for scheduling an uplink message to be sent through a set of one or more transmit ports. The communication manager 1120 may be configured to or otherwise support a component for receiving an uplink message based on the grant and based on the UE's transmitter switching from the uplink frequency band to the sidelink frequency band using the sidelink frequency band.

[0164] By including or configuring a communications manager 1120 according to the examples described herein, the device 1105 can support techniques for switching uplink transmissions between an uplink frequency band and a sidelink frequency band that can increase signaling throughput, reduce latency, and provide more efficient use of communications resources.

[0165] In some examples, the communication manager 1120 can be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1110, one or more antennas 1115 (e.g., where applicable), or any combination thereof. Although the communication manager 1120 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1120 can be supported or performed by the transceiver 1110, the processor 1135, the memory 1125, the code 1130, or any combination thereof. For example, the code 1130 may include instructions that are executable by the processor 1135 to cause the device 1105 to perform various aspects of uplink transmission switching for the sidelink frequency band and the uplink frequency band as described herein, or the processor 1135 and the memory 1125 may be otherwise configured to perform or support such operations.

[0166] Fig.12 A flow chart illustrating a method 1200 for supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The operations of the method 1200 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1200 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 7 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0167] At 1205, the method may include sending a capability message indicating the UE's ability to perform uplink switching between the uplink frequency band and the sidelink frequency band. The operations of 1205 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1205 may be performed as described in reference to Figure 6 The capability component 625 is used to execute.

[0168] At 1210, the method may include receiving a grant to schedule an uplink message to be transmitted through a set of one or more transmit ports. The operations of 1210 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1210 may be performed as described in reference to Figure 6 The grant component 630 is executed.

[0169] At 1215, the method may include: switching a transmitter of the UE from an uplink frequency band to a sidelink frequency band based on a set of one or more transmit ports and a capability message. The operations of 1215 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1215 may be performed as described in reference to Figure 6 The switching component 635 is used to execute.

[0170] At 1220, the method may include: sending an uplink message using the sidelink frequency band according to the grant and based on the switch. The operations of 1220 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1220 may be performed as described in reference to Figure 6 The uplink message component 640 is used to perform.

[0171] Fig.13 A flow chart illustrating a method 1300 for supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The operations of the method 1300 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1300 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 7 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0172] At 1305, the method may include sending a capability message indicating the UE's ability to perform uplink switching between the uplink frequency band and the sidelink frequency band. The operations of 1305 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1305 may be performed as described in reference to Figure 6 The capability component 625 is used to execute.

[0173] At 1310, the method may include receiving a grant to schedule an uplink message to be transmitted through a set of one or more transmit ports. The operations of 1310 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1310 may be performed as described in reference to Figure 6 The grant component 630 is executed.

[0174] At 1315, the method may include: switching a transmitter of the UE from an uplink frequency band to a sidelink frequency band based on a set of one or more transmit ports and a capability message. The operations of 1315 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1315 may be performed as described in reference to Figure 6 The switching component 635 is used to execute.

[0175] At 1320, the method may include: based on the transmitter of the switching UE sending a feedback report associated with the grant over the sidelink frequency band, wherein the feedback report indicates that the switching is successful. The operations of 1320 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1320 may be performed as described in reference to Figure 6 The feedback component 645 is used to perform.

[0176] At 1325, the method may include: sending an uplink message using the sidelink frequency band according to the grant and based on the switch. The operations of 1325 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1325 may be performed as described in reference to Figure 6 The uplink message component 640 is used to perform.

[0177] Fig.14 A flow chart illustrating a method 1400 for supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The operations of the method 1400 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1400 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 7 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0178] At 1405, the method may include sending a capability message indicating the UE's ability to perform uplink switching between the uplink frequency band and the sidelink frequency band. The operations of 1405 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1405 may be performed as described in reference to Figure 6 The capability component 625 is used to execute.

[0179] At 1410, the method may include receiving a grant to schedule an uplink message to be transmitted through a set of one or more transmit ports. The operations of 1410 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1410 may be performed as described in reference to Figure 6 The grant component 630 is executed.

[0180] At 1415, the method may include: switching a transmitter of the UE from an uplink frequency band to a sidelink frequency band based on a set of one or more transmit ports and a capability message. The operations of 1415 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1415 may be performed as described in reference to Figure 6 The switching component 635 is used to execute.

[0181] At 1420, the method may include: based on the switching UE's transmitter sending a feedback report associated with the grant over the sidelink frequency band, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band. The operations of 1420 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1420 may be performed as described in reference to Figure 6 The feedback component 645 is used to perform.

[0182] At 1425, the method may include: sending an uplink message using the sidelink frequency band according to the grant and based on the switch. The operations of 1425 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1425 may be performed as described in reference to Figure 6 The uplink message component 640 is used to perform.

[0183] Fig.15 A flow chart illustrating a method 1500 for supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1500 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 7 The UE 115 described herein may be executed. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the described functions. Additionally or alternatively, the UE may use dedicated hardware to perform various aspects of the described functions.

[0184] At 1505, the method may include sending a capability message indicating the UE's ability to perform uplink switching between the uplink frequency band and the sidelink frequency band. The operations of 1505 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1505 may be performed as described in reference to Figure 6 The capability component 625 is used to execute.

[0185] At 1510, the method may include receiving a grant to schedule an uplink message to be transmitted through a set of one or more transmit ports. The operations of 1510 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1510 may be performed as described in reference to Figure 6 The grant component 630 is executed.

[0186] At 1515, the method may include reserving one or more future time slots of the sidelink frequency band for sending an uplink message based on the grant. The operations of 1515 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1515 may be performed as described in reference to Figure 6 The reserved component 655 is executed.

[0187] At 1520, the method may include switching a transmitter of the UE from an uplink frequency band to a sidelink frequency band based on a set of one or more transmit ports and a capability message. The operations of 1520 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1520 may be performed as described in reference to Figure 6 The switching component 635 is used to execute.

[0188] At 1525, the method may include: sending an uplink message using the sidelink frequency band according to the grant and based on the switch. The operations of 1525 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1525 may be performed as described in reference to Figure 6 The uplink message component 640 is used to perform.

[0189] Fig.16 A flow chart illustrating a method 1600 for supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 3 as well as Figures 8 to 11 In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0190] At 1605, the method may include receiving a capability message indicating the UE's ability to perform uplink switching between an uplink frequency band and a sidelink frequency band. The operations of 1605 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1605 may be performed as described in reference to Fig.10 The capability message component 1025 is used to execute.

[0191] At 1610, the method may include sending a grant to schedule an uplink message to be sent through a set of one or more transmit ports. The operations of 1610 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1610 may be performed as described in reference to Fig.10 The scheduling component 1030 is used for execution.

[0192] At 1615, the method may include: receiving an uplink message using the sidelink frequency band in accordance with the grant and based on the UE's transmitter switching from the uplink frequency band to the sidelink frequency band. The operations of 1615 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1615 may be performed as described in reference to Fig.10 The uplink message component 1035 is used to perform.

[0193] Fig.17 A flow chart illustrating a method 1700 for supporting uplink transmission switching for a sidelink frequency band and an uplink frequency band according to one or more aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1700 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 3 as well as Figures 8 to 11 In some examples, the network entity may execute an instruction set to control the functional elements of the network entity to perform the described functions. Additionally or alternatively, the network entity may use dedicated hardware to perform various aspects of the described functions.

[0194] At 1705, the method may include receiving a capability message indicating the UE's ability to perform uplink switching between an uplink frequency band and a sidelink frequency band, and indicating that the UE is capable of performing uplink transmissions using one or more of the following: an uplink frequency band, a sidelink frequency band, or both an uplink frequency band and a sidelink frequency band. The operations of 1705 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1705 may be performed as described in reference to Fig.10 The capability message component 1025 is used to execute.

[0195] At 1710, the method may include sending a grant to schedule an uplink message to be sent through a set of one or more transmit ports. The operations of 1710 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1710 may be performed as described in reference to Fig.10 The scheduling component 1030 is used for execution.

[0196] At 1715, the method may include: receiving an uplink message using the sidelink frequency band in accordance with the grant and based on the UE's transmitter switching from the uplink frequency band to the sidelink frequency band. The operations of 1715 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1715 may be performed as described in reference to Fig.10 The uplink message component 1035 is used to perform.

[0197] The following provides an overview of various aspects of the disclosure:

[0198] Aspect 1: A method for wireless communication, the method comprising: sending a capability message indicating the ability of a UE to perform uplink switching between an uplink frequency band and a sidelink frequency band; receiving a grant to schedule an uplink message to be sent through a set of one or more transmit ports; switching a transmitter of the UE from the uplink frequency band to the sidelink frequency band based at least in part on the set of one or more transmit ports and the capability message; and sending the uplink message using the sidelink frequency band based on the grant and at least in part on the switching.

[0199] Aspect 2: According to the method of aspect 1, the method also includes: sending a feedback report associated with the grant through the sidelink frequency band based at least in part on switching the transmitter of the UE, wherein the feedback report indicates that the switching is successful.

[0200] Aspect 3: According to the method described in any one of Aspects 1 to 2, the method further includes: sending a feedback report associated with the grant through the sidelink frequency band based at least in part on switching the transmitter of the UE, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band.

[0201] Aspect 4: According to any one of Aspects 1 to 3, the method also includes: retaining a feedback report associated with the grant through the sidelink frequency band at least in part based on a conflict associated with the uplink message on the sidelink frequency band.

[0202] Aspect 5: According to any one of aspects 1 to 4, the method also includes: reserving one or more future time slots of the sidelink frequency band for sending the uplink message based at least in part on the grant.

[0203] Aspect 6: The method according to any one of aspects 1 to 5, wherein the uplink message is associated with a first radio access technology and is scheduled for resources associated with a second radio access technology on the sidelink frequency band.

[0204] Aspect 7: The method according to any one of aspects 1 to 6, wherein the uplink message is associated with a set of resources on the sidelink frequency band that are excluded from sidelink communication.

[0205] Aspect 8: A method according to any one of Aspects 1 to 7, wherein sending the capability message includes: sending, via the capability message, an indication that the UE is capable of performing uplink transmission using one or more of the following: the uplink frequency band, the sidelink frequency band, or both the uplink frequency band and the sidelink frequency band.

[0206] Aspect 9: The method according to aspect 8, wherein sending the capability message includes: sending an indication of the number or set of TAGs supported by the UE for simultaneous transmission through the uplink frequency band and the sidelink frequency band via the capability message.

[0207] Aspect 10: According to the method according to any one of aspects 1 to 9, the method also includes: scheduling at most two transmissions for the uplink frequency band and the sidelink frequency band.

[0208] Aspect 11: The method according to any one of aspects 1 to 10, wherein a switching gap between receiving the grant and sending the uplink message is based at least in part on a switching period between frequency bands in the same TAG and a defined MTTD.

[0209] Aspect 12: A method for wireless communication, the method comprising: receiving a capability message indicating the ability of a UE to perform uplink switching between an uplink frequency band and a sidelink frequency band; sending a grant for scheduling an uplink message to be sent through a set of one or more transmit ports; and receiving the uplink message using the sidelink frequency band based on the grant and at least in part on switching a transmitter of the UE from the uplink frequency band to the sidelink frequency band.

[0210] Aspect 13: The method according to aspect 12 further includes: sending a feedback report associated with the grant through the sidelink frequency band based at least in part on the switching of the transmitter of the UE, wherein the feedback report indicates that the switching is successful.

[0211] Aspect 14: According to the method described in any one of Aspects 12 to 13, the method also includes: receiving a feedback report associated with the grant through the sidelink frequency band based at least in part on switching of the transmitter of the UE, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band.

[0212] Aspect 15: The method according to any one of aspects 12 to 14, wherein receiving the uplink message includes: receiving the uplink message via one or more future time slots of the sidelink frequency band based at least in part on the grant.

[0213] Aspect 16: The method according to any one of aspects 12 to 15, wherein the uplink message is associated with a first radio access technology and is scheduled for resources associated with a second radio access technology on the sidelink frequency band.

[0214] Aspect 17: The method according to any one of aspects 12 to 16, wherein the uplink message is associated with a set of resources on the sidelink frequency band that are excluded from sidelink communication.

[0215] Aspect 18: A method according to any one of Aspects 12 to 17, wherein receiving the capability message includes: receiving, via the capability message, an indication that the UE is capable of performing uplink transmission using one or more of the following: the uplink frequency band, the sidelink frequency band, or both the uplink frequency band and the sidelink frequency band.

[0216] Aspect 19: The method according to aspect 18, wherein receiving the capability message includes: receiving, via the capability message, an indication of the number or set of TAGs supported by the UE for simultaneous transmission over the uplink frequency band and the sidelink frequency band.

[0217] Aspect 20: According to any one of aspects 12 to 19, the method further comprises: scheduling at most two transmissions for the uplink frequency band and the sidelink frequency band.

[0218] Aspect 21: The method according to any one of aspects 12 to 20, wherein a switching gap between sending the grant and receiving the uplink message is based at least in part on a switching period between frequency bands in the same TAG and a defined MTTD.

[0219] Aspect 22: An apparatus for wireless communication, the apparatus comprising: a processor; a memory, the memory being in electronic communication with the processor; and instructions, the instructions being stored in the memory, wherein the instructions are executable by the processor to perform a method according to any one of Aspects 1 to 11.

[0220] Aspect 23: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to any one of aspects 1 to 11.

[0221] Aspect 24: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable to perform the method according to any one of aspects 1 to 11.

[0222] Aspect 25: An apparatus for wireless communication, the apparatus comprising: a processor; a memory, the memory being in electronic communication with the processor; and instructions, the instructions being stored in the memory, wherein the instructions are executable by the processor to perform a method according to any one of Aspects 12 to 21.

[0223] Aspect 26: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to any one of aspects 12 to 21.

[0224] Aspect 27: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable to perform a method according to any one of aspects 12 to 21.

[0225] It should be noted that the methods described herein describe possible implementations, and that the various operations and steps may be rearranged or otherwise modified and that other implementations are possible. Furthermore, aspects from two or more methods may be combined.

[0226] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein may also be applicable to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the techniques described may be applicable to various other wireless communication systems, such as Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0227] The information and signals described herein may be represented using any of a variety of different technologies and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0228] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed using a general purpose processor, DSP, ASIC, CPU, FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The 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 in conjunction with a DSP core, or any other such configuration).

[0229] 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 codes of a computer-readable medium or sent using one or more instructions or codes of a computer-readable medium. Other examples and specific implementations are within the scope of the present 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, hard wiring, or a combination of any of these items. The features that implement the functions can also be physically located at different locations, including being distributed so that the various parts of the functions are implemented at different physical locations.

[0230] Computer-readable medium includes both non-transient computer storage medium and communication medium, and it includes any medium that promotes computer program to be transmitted from one position to another position.Non-transient storage medium can be any available medium that can be accessed by general or special-purpose computer.By way of example and not limitation, non-transient computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage device, disk storage device or other magnetic storage device, or can be used for carrying or storing desired program code parts and any other non-transient medium that can be accessed by general or special-purpose computer or general or special-purpose processor in the form of instruction or data structure.In addition, any connection is appropriately referred to as computer-readable medium.For example, if software is sent from website, server or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave, then coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. Disks and optical disks used herein include CDs, laser optical disks, optical optical disks, digital versatile disks (DVDs), floppy disks, and Blu-ray disks. Disks can reproduce data magnetically, and optical disks can reproduce data optically using lasers. Combinations of the above are also included within the scope of computer-readable media.

[0231] As used herein (including in the claims), "or" used in a list of items (e.g., a list of items followed by a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of 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). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0232] The term "determining" encompasses a variety of actions, and thus, "determining" may include calculating, computing, processing, deriving, investigating, looking up (such as via looking up in a table, database or other data structure), ascertaining, and the like. Furthermore, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Additionally, "determining" may include parsing, obtaining, selecting, choosing, establishing, and other such similar actions.

[0233] In the drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number to distinguish between the similar components. If only the first reference number is used in the specification, the description may apply to any of the similar components having the same first reference number, regardless of the second or other subsequent reference numbers.

[0234] The descriptions set forth herein in conjunction with the accompanying drawings describe example configurations and do not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "advantageous over other examples." Specific embodiments include specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some cases, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0235] The description herein is provided to enable one of ordinary skill in the art to implement or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present disclosure. Thus, the present 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 device for wireless communication, the device comprising: processor; a memory in electronic communication with the processor; and instructions stored in the memory, wherein the instructions are executable by the processor to: sending a capability message indicating the capability of the UE to perform uplink switching between the uplink frequency band and the sidelink frequency band; receiving a grant to schedule an uplink message for transmission over a set of one or more transmission ports; switching a transmitter of the UE from the uplink frequency band to the sidelink frequency band based at least in part on the set of one or more transmit ports and the capability message; as well as The uplink message is sent using the sidelink frequency band in accordance with the grant and based at least in part on the switching.

2. The apparatus of claim 1 , wherein the instructions are further executable by the processor to: The transmitter of the UE transmits a feedback report associated with the grant over the sidelink frequency band based at least in part on switching the UE, wherein the feedback report indicates that the switching was successful.

3. The apparatus of claim 1 , wherein the instructions are further executable by the processor to: The transmitter of the UE transmits a feedback report associated with the grant over the sidelink frequency band based at least in part on switching the UE, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band.

4. The apparatus of claim 1, wherein the instructions are further executable by the processor to: A feedback report associated with the grant is retained over the sidelink frequency band based at least in part on a conflict associated with the uplink message on the sidelink frequency band.

5. The apparatus of claim 1, wherein the instructions are further executable by the processor to: One or more future time slots of the sidelink frequency band are reserved for sending the uplink message based at least in part on the grant.

6. The apparatus of claim 1, wherein the uplink message is associated with a first radio access technology and is scheduled for resources associated with a second radio access technology on the sidelink frequency band.

7. The apparatus of claim 1, wherein the uplink message is associated with a set of resources on the sidelink frequency band that are excluded from sidelink communications.

8. The apparatus of claim 1 , wherein the instructions executable by the processor to send the capabilities message include instructions executable by the processor to: An indication that the UE is capable of performing uplink transmission using one or more of: the uplink frequency band, the sidelink frequency band, or both the uplink frequency band and the sidelink frequency band is transmitted via the capability message.

9. The apparatus of claim 8, wherein the instructions executable by the processor to send the capabilities message include instructions executable by the processor to: An indication of a number or set of timing advance groups supported by the UE for simultaneous transmission over the uplink frequency band and the sidelink frequency band is sent via the capability message.

10. The device according to claim 1, further comprising: At most two transmissions are scheduled for the uplink frequency band and the sidelink frequency band.

11. The apparatus of claim 1 , wherein a switching gap between receiving the grant and sending the uplink message is based at least in part on a switching period between frequency bands in the same timing advance group and a defined maximum transmit timing difference.

12. An apparatus for wireless communication, the apparatus comprising: processor; a memory in electronic communication with the processor; and instructions stored in the memory, wherein the instructions are executable by the processor to: receiving a capability message indicating a capability of a user equipment (UE) to perform uplink switching between an uplink frequency band and a sidelink frequency band; sending a grant to schedule an uplink message for transmission over a set of one or more transmission ports; as well as The uplink message is received using the sidelink frequency band in accordance with the grant and based at least in part on a switching by a transmitter of the UE from the uplink frequency band to the sidelink frequency band.

13. The apparatus of claim 12, wherein the instructions are further executable by the processor to: A feedback report associated with the grant is received over the sidelink frequency band based at least in part on the switching of the transmitter of the UE, wherein the feedback report indicates that the switching was successful.

14. The apparatus of claim 12, wherein the instructions are further executable by the processor to: A feedback report associated with the grant is received over the sidelink frequency band based at least in part on the switching of the transmitter of the UE, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band.

15. The apparatus of claim 12, wherein the instructions for receiving the uplink message are executable by the processor to: The uplink message is received via one or more future time slots of the sidelink frequency band based at least in part on the grant.

16. The apparatus of claim 12, wherein the uplink message is associated with a first radio access technology and is scheduled for resources associated with a second radio access technology on the sidelink frequency band.

17. The apparatus of claim 12, wherein the uplink message is associated with a set of resources on the sidelink frequency band that are excluded from sidelink communications.

18. The apparatus of claim 12, wherein the instructions executable by the processor to receive the capabilities message include instructions executable by the processor to: An indication is received via the capability message that the UE is capable of performing uplink transmissions using one or more of: the uplink frequency band, the sidelink frequency band, or both the uplink frequency band and the sidelink frequency band.

19. The apparatus of claim 18, wherein the instructions executable by the processor to receive the capabilities message include instructions executable by the processor to: An indication of a number or set of timing advance groups supported by the UE for simultaneous transmission over the uplink frequency band and the sidelink frequency band is received via the capability message.

20. The apparatus according to claim 12, further comprising: At most two transmissions are scheduled for the uplink frequency band and the sidelink frequency band.

21. The apparatus of claim 12, wherein a switching gap between sending the grant and receiving the uplink message is based at least in part on a switching period between frequency bands in the same timing advance group and a defined maximum transmit timing difference.

22. A method for wireless communication, the method comprising: sending a capability message indicating the capability of the UE to perform uplink switching between the uplink frequency band and the sidelink frequency band; receiving a grant to schedule an uplink message for transmission over a set of one or more transmission ports; switching a transmitter of the UE from the uplink frequency band to the sidelink frequency band based at least in part on the set of one or more transmit ports and the capability message; as well as The uplink message is sent using the sidelink frequency band in accordance with the grant and based at least in part on the switching.

23. The method according to claim 22, further comprising: The transmitter of the UE transmits a feedback report associated with the grant over the sidelink frequency band based at least in part on switching the UE, wherein the feedback report indicates that the switching was successful.

24. The method according to claim 22, further comprising: The transmitter of the UE transmits a feedback report associated with the grant over the sidelink frequency band based at least in part on switching the UE, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band.

25. The method according to claim 22, further comprising: A feedback report associated with the grant is retained over the sidelink frequency band based at least in part on a conflict associated with the uplink message on the sidelink frequency band.

26. The method according to claim 22, further comprising: One or more future time slots of the sidelink frequency band are reserved for sending the uplink message based at least in part on the grant.

27. A method for wireless communication, the method comprising: receiving a capability message indicating a capability of a user equipment (UE) to perform uplink switching between an uplink frequency band and a sidelink frequency band; sending a grant to schedule an uplink message for transmission over a set of one or more transmission ports; as well as The uplink message is received using the sidelink frequency band in accordance with the grant and based at least in part on a switching by a transmitter of the UE from the uplink frequency band to the sidelink frequency band.

28. The method according to claim 27, further comprising: A feedback report associated with the grant is received over the sidelink frequency band based at least in part on the switching of the transmitter of the UE, wherein the feedback report indicates that the switching was successful.

29. The method according to claim 27, further comprising: A feedback report associated with the grant is received over the sidelink frequency band based at least in part on the switching of the transmitter of the UE, wherein the feedback report indicates a conflict associated with the uplink message on the sidelink frequency band.

30. The method of claim 27, wherein receiving the uplink message comprises: The uplink message is received via one or more future time slots of the sidelink frequency band based at least in part on the grant.

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