Flexible channel structure for paired radio frequency spectrum bands

Abstract

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive control signaling including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band. The first operating band may include a first carrier paired with a second carrier of the first operating band. The first carrier may be separated in frequency from the second carrier and used for one of transmitting from or receiving at the UE, and the second carrier may be used for both transmitting from and receiving at the UE. The UE may use the second carrier for both transmission and reception using time division duplex (TDD) according to the configuration. The UE may communicate messages concurrently with the wireless device using the first carrier and the second carrier.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. patent application No. 17 / 881,562, filed by Uchino et al. on August 4, 2022, entitled “Flexible Channel Structure for Paired Radio Frequency Spectrum Bands,” which is assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The following relates to wireless communications including flexible channel structures for paired radio spectrum bands. Background Art

[0004] 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 network entities, each of which supports wireless communication of communication devices, which may be referred to as user equipment (UE). In some communication systems, network entities and UEs may support wireless communication using paired radio spectrum bands or unpaired radio spectrum bands. Summary of the invention

[0005] The described technology relates to improved methods, systems, devices and apparatuses that support flexible channel structures for paired radio spectrum bands. For example, the described technology provides time division duplex (TDD) and frequency division duplex (FDD) using paired radio spectrum bands. In some examples, a user equipment (UE) may receive control signaling that includes an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band. The first operating band may include a first carrier paired with a second carrier of the first operating band. The first carrier may be separated from the second carrier in frequency and used for one of sending from the UE or receiving at the UE, while the second carrier may be used for both sending from the UE and receiving at the UE. The UE may use the second carrier for both sending and receiving using TDD according to the configuration. The UE may use the first carrier and the second carrier to communicate messages concurrently with the wireless device.

[0006] A method for wireless communication at a UE is described. The method may include: receiving control signaling including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using TDD according to the configuration; and communicating a set of multiple messages concurrently with the wireless device using the first carrier and the second carrier.

[0007] An apparatus for wireless communication at a UE is described. The apparatus may include a processor and a memory coupled to the processor, wherein the memory includes instructions executable by the processor to cause the apparatus to perform the following operations: receive control signaling, the control instructions including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using TDD according to the configuration; and communicate a set of multiple messages concurrently with the wireless device using the first carrier and the second carrier.

[0008] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving control signaling including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using TDD according to the configuration; and means for concurrently communicating a set of multiple messages with the wireless device using the first carrier and the second carrier.

[0009] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to: receive control signaling, the control instruction including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using TDD according to the configuration; and communicate a set of multiple messages concurrently with the wireless device using the first carrier and the second carrier.

[0010] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving control signaling including an indication may include operations, features, components, or instructions for receiving a first indication of the first carrier that is paired with the second carrier in the first operating frequency band and a second indication of the second carrier that identifies that the second carrier may not be paired, wherein the second carrier can be used for both sending from the UE and receiving at the UE based on the first indication and the second indication.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving the control signaling may include operations, features, components, or instructions for receiving a second indication that the first carrier may be used for FDD or supplemental downlink at the UE and the second carrier may be used for TDD at the UE, wherein the first carrier may be used for sending from the UE or receiving at the UE, and the second carrier may be used for sending from the UE and receiving at the UE based on the second indication.

[0012] Some examples of the methods, apparatus and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving second control signaling, the second control signaling including a second indication for the UE to switch from one of sending from the UE or receiving at the UE using the first carrier in a first set of time intervals to a different one of sending from the UE or receiving at the UE using the second carrier in a second set of time intervals.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second indication includes an indication for the UE to switch from using a first BWP corresponding to one of sending from the UE or receiving at the UE using the first carrier to using a second BWP corresponding to a different one of sending from the UE or receiving at the UE using the second carrier.

[0014] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving second control signaling that identifies a mapping between a channel and two or more of a downlink, an uplink, or a sidelink, wherein the channel comprises a quality of service (QoS) flow, a radio frequency bearer, a radio link control (RLC) channel or bearer, a logical channel, wherein communicating the set of multiple messages can be based on the mapping.

[0015] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving second control signaling, the second control signaling comprising a second indication that schedules a first message to be communicated using first one or more resources from a resource pool and a second message to be communicated using second one or more resources from the resource pool, wherein the first one or more resources may be associated with the first carrier and the second one or more resources may be associated with the second carrier, and wherein communicating the set of multiple messages may be based on the second indication.

[0016] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving first scheduling information for a first message in the set of multiple messages to be communicated using the first carrier and second scheduling information for a second message in the set of multiple messages to be communicated using the second carrier, the first carrier and the second carrier being separately scheduled.

[0017] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving second control signaling, the second control signaling including a second indication of a first number of hybrid automatic repeat request (HARQ) processes associated with the first carrier and a second number of HARQ processes associated with the second carrier.

[0018] In some examples of the methods, apparatuses, and non-transitory computer-readable media described herein, the first carrier and the second carrier may be used at least for transmission from the UE, and the methods, apparatuses, and non-transitory computer-readable media may also include operations, features, components, or instructions for receiving second control signaling, the second control signaling including a second indication for the UE to use the first carrier, the second carrier, or both to send feedback associated with communicating the group of multiple messages.

[0019] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving second control signaling, the second control signaling including a second indication identifying at least one type of signal to be sent from the UE or received at the UE using the first carrier during a random access procedure and at least one corresponding type of signal to be sent from the UE and received at the UE using the second carrier during the random access procedure.

[0020] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second control signaling also includes a third indication of a first timing advance value to be used at the UE for the first carrier and a second timing advance value to be used at the UE for the second carrier.

[0021] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving second control signaling, the second control signaling including a second indication for the UE to perform receive power measurement for channel state information (CSI) reporting using the first carrier, the second carrier, or both.

[0022] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a second control signaling including a second indication of at least one capability of the UE, the at least one capability including a ratio between a capacity for transmission from the UE and a capacity for reception at the UE, an ability of the UE to perform full-duplex communication, an ability of the UE to perform half-duplex communication, a processing time supported at the UE, a buffer size supported at the UE, or any combination thereof.

[0023] A method for wireless communication at a network entity is described. The method may include: sending control signaling including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using TDD according to the configuration; and communicating a set of multiple messages with the wireless device concurrently using the first carrier and the second carrier.

[0024] An apparatus for wireless communication at a network entity is described. The apparatus may include a processor, wherein a memory includes instructions executable by the processor to cause the apparatus to: send control signaling, the control instructions including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using TDD according to the configuration; and communicate a set of multiple messages concurrently with the wireless device using the first carrier and the second carrier.

[0025] Another apparatus for wireless communication at a network entity is described. The apparatus may include: means for sending control signaling including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using TDD according to the configuration; and means for concurrently communicating a set of multiple messages with the wireless device using the first carrier and the second carrier.

[0026] A non-transitory computer-readable medium storing code for wireless communication at a network entity is described. The code may include instructions executable by a processor to: send control signaling including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using TDD according to the configuration; and communicate a set of multiple messages concurrently with the wireless device using the first carrier and the second carrier.

[0027] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the control signaling may include operations, features, components, or instructions for sending a first indication of the first carrier that is paired with the second carrier in the first operating frequency band and a second indication of the second carrier that identifies that the second carrier may not be paired, wherein the second carrier can be used for both sending from the wireless device and receiving at the wireless device based on the first indication and the second indication.

[0028] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending the control signaling may include operations, features, components, or instructions for sending a second indication that the first carrier is available for FDD or supplemental downlink at the wireless device and the second carrier is available for TDD at the wireless device, wherein the first carrier is available for transmission from the wireless device or reception at the wireless device, and the second carrier is available for transmission from the wireless device and reception at the wireless device based on the second indication.

[0029] Some examples of the methods, apparatus and non-transitory computer-readable media used herein may also include operations, features, components, or instructions for sending second control signaling including a second indication for the wireless device to switch from one of transmitting from the wireless device or receiving at the wireless device using the first carrier in a first set of time intervals to a different one of transmitting from the wireless device or receiving at the wireless device using the second carrier in a second set of time intervals.

[0030] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending second control signaling including a second indication identifying at least one respective transmission channel for the first carrier and the second carrier, wherein communicating the set of multiple messages may be based on the second indication.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media used herein, the second indication includes an indication for the wireless device to switch from using a first BWP corresponding to one of transmitting from the wireless device or receiving at the wireless device using the first carrier to using a second BWP corresponding to a different one of transmitting from the wireless device or receiving at the wireless device using the second carrier.

[0032] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending second control signaling that identifies a mapping between a channel and two or more of a downlink, an uplink, or a sidelink, wherein the channel includes a QoS flow, a radio frequency bearer, an RLC channel or bearer, a logical channel, wherein communicating the set of multiple messages can be based on the mapping.

[0033] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending second control signaling, the second control signaling comprising a second indication that schedules a first message to be communicated using first one or more resources from a resource pool and a second message to be communicated using second one or more resources from the resource pool, wherein the first one or more resources may be associated with the first carrier and the second one or more resources may be associated with the second carrier, and wherein communicating the set of multiple messages may be based on the second indication.

[0034] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending first scheduling information for a first message in the set of multiple messages to be communicated using the first carrier and second scheduling information for a second message in the set of multiple messages to be communicated using the second carrier, the first carrier and the second carrier being separately scheduled.

[0035] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending second control signaling, the second control signaling including a second indication of a first number of HARQ processes associated with the first carrier and a second number of HARQ processes associated with the second carrier.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the first carrier and the second carrier may be used at least for transmission from the wireless device, and the methods, apparatus, and non-transitory computer-readable media may also include operations, features, components, or instructions for sending second control signaling, the second control signaling including a second indication for the wireless device to use the first carrier, the second carrier, or both to send feedback associated with communicating the group of multiple messages.

[0037] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the second control signaling also includes a third indication of a first timing advance value to be used at the wireless device for the first carrier and a second timing advance value to be used at the wireless device for the second carrier.

[0038] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending second control signaling, the second control signaling including a second indication for the wireless device to perform received power measurements for CSI reporting using the first carrier, the second carrier, or both.

[0039] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the wireless device includes a UE, and the methods, apparatus, and non-transitory computer-readable media may also include operations, features, components, or instructions for receiving a second control signaling, the second control signaling including a second indication of at least one capability of the UE, the at least one capability including a ratio between a capacity for sending from the UE and a capacity for receiving at the UE, an ability of the UE to perform full-duplex communication, an ability of the UE to perform half-duplex communication, a processing time supported at the UE, a buffer size supported at the UE, or any combination thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 and Figure 2 Each illustrates an example of a wireless communication system supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure.

[0041] Figure 3 An example of a carrier configuration diagram supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is illustrated.

[0042] Figure 4A and Figure 4B Each illustrates an example of a resource allocation map supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure.

[0043] Figure 5A , Figure 5B , Figure 5C , Figure 5D and Figure 5E Each illustrates an example of a carrier scheduling diagram supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure.

[0044] Figure 6 An example of a process flow supporting a flexible channel structure for paired radio spectrum bands in accordance with one or more aspects of the present disclosure is illustrated.

[0045] Figure 7 and Figure 8 A block diagram of a device supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown.

[0046] Fig. 9 A block diagram of a communications manager supporting a flexible channel structure for paired radio spectrum bands is shown in accordance with one or more aspects of the present disclosure.

[0047] Fig.10 A diagram of a system including devices supporting a flexible channel structure for paired radio spectrum bands is shown in accordance with one or more aspects of the present disclosure.

[0048] Fig.11 and Fig.12 A block diagram of a device supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown.

[0049] Fig.13 A block diagram of a communications manager supporting a flexible channel structure for paired radio spectrum bands is shown in accordance with one or more aspects of the present disclosure.

[0050] Fig.14 A diagram of a system including devices supporting a flexible channel structure for paired radio spectrum bands is shown in accordance with one or more aspects of the present disclosure.

[0051] Figures 15 to 18 A flow chart illustrating a method of supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0052] In some wireless communication systems, a communication device (e.g., user equipment (UE), network entity) may use paired operating bands (e.g., frequency range 1 (FR1) radio spectrum band or frequency range 2 (FR2) radio spectrum band) or unpaired operating bands of radio spectrum bands to support wireless communication. As described herein, a paired operating band may refer to an operating band that includes a first set of frequencies configured for reception at a communication device (e.g., a first continuous frequency range that may be referred to as a frequency band, operating band, or carrier and may include a subcarrier range or set) and a second set of frequencies paired with the first set of frequencies and configured for transmission at the communication device (e.g., another continuous frequency range that may also be referred to as a frequency band, operating band, or carrier and may include a subcarrier range or set). In some examples of paired operating bands, the first set of frequencies (e.g., a first frequency band, a first operating band, a first carrier) and the second set of frequencies (e.g., a second frequency band, a second operating band, a second carrier) may not overlap in frequency (e.g., be separated in frequency, or have a frequency range or subcarrier set between and separating the two sets of frequencies in frequency). Additionally or alternatively, as described herein, an unpaired operating band may refer to a set of frequencies (eg, a range of frequencies that may be referred to as a frequency band, operating band, or carrier) that may be used for both transmission and reception at a communication device.

[0053] For example, a communication device may be able to use paired operating bands via frequency division duplex (FDD) or use unpaired operating bands via time division duplex (TDD) for concurrent uplink and downlink communications. Using two paired operating bands (e.g., via FDD) to concurrently perform uplink and downlink communications can reduce delays and improve the predictability of delays (e.g., the delays experienced at the communication device). However, in some examples, the time-frequency resource allocation for uplink and downlink communications via FDD may be rigid (e.g., fixed, inflexible), which may lead to inefficient utilization of time-frequency resources within a wireless communication system. For example, if the density of communication devices operating within a wireless communication system is relatively high, inefficient utilization of time-frequency resources may lead to performance degradation. Using TDD to concurrently perform uplink and downlink communications can provide increased flexibility for the allocation of time-frequency resources (e.g., unpaired operating bands), which can improve resource utilization within a wireless communication system.

[0054] Various aspects of the present disclosure relate generally to techniques for flexible channel structures for paired radio spectrum bands, and more specifically to techniques for using TDD and FDD with paired operating bands. For example, the techniques described herein may implement TDD operation with paired operating bands (e.g., operating bands that may be configured for FDD operation) to provide flexible resource allocation while maintaining reduced latency. In some examples, a communication device (e.g., a UE) may be configured to use paired operating bands (e.g., a pair of carriers) comprising a first carrier and a second carrier separated in frequency from the first carrier. The UE may perform FDD using the first carrier and the second carrier, and perform TDD using the second carrier. That is, the first carrier may be used to transmit from the UE or to receive at the UE, and the second carrier may be used to transmit from the UE and to receive at the UE.

[0055] In some examples, the network may configure the UE to perform FDD using the first carrier and the second carrier and to perform TDD using the second carrier. For example, the network may indicate to the UE one or more rules (e.g., and one or more parameters) for switching between transmission and reception using the second carrier (e.g., switching between a bandwidth part (BWP) of a carrier that can be configured for transmission at the UE and another BWP of a carrier that can be configured for reception at the UE). Additionally or alternatively, the network may indicate to the UE a mapping of the first carrier and the second carrier to multiple (e.g., different) transmission channels, multiple communication directions (e.g., downlink, uplink, and sidelink), or both. In some examples, the network may use the first carrier and the second carrier to schedule transmission or reception (or both) at the UE. For example, the network may indicate to the UE to use the first carrier or the second carrier (or both) to send feedback. Additionally or alternatively, the network may configure the UE to use the first carrier or the second carrier (or both) to perform a random access procedure and channel state information (CSI) measurement.

[0056] Certain aspects of the subject matter described herein may be implemented to achieve one or more of the following potential advantages. The techniques employed by the described communication device may provide benefits and enhancements to the operation of the communication device, including enabling a UE to perform FDD using a first carrier of a paired operating band and a second carrier of a paired operating band, and to perform TDD using the second carrier. For example, the operations performed by the described communication device may provide flexible resource allocation and reduced latency. In some specific implementations, the operations performed by the described communication device may also support increased resource utilization, increased throughput, and increased data rates, among other possible benefits.

[0057] Aspects of the present disclosure are first described in the context of a wireless communication system. Aspects of the present disclosure are also described in the context of a carrier configuration map, a resource allocation map, and a carrier scheduling map. Aspects of the present disclosure are further illustrated and described by and with reference to apparatus diagrams, system diagrams, and flow diagrams related to a flexible channel structure for paired radio spectrum bands.

[0058] Figure 1 An example of a wireless communication system 100 supporting a flexible channel structure for paired radio spectrum bands 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.

[0059] 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, among other nomenclature. 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).

[0060] 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 Other UEs 115 or network entities 105 are shown communicating.

[0061] 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.

[0062] 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 communicate with each other via the backhaul communication links 120 (e.g., according to X2, Xn, or other interface protocols) directly (e.g., directly between the network entities 105) or indirectly (e.g., via the core network 130). In some examples, the network entities 105 may communicate with each other via the midhaul communication links 162 (e.g., according to the midhaul interface protocol) or the fronthaul communication links 168 (e.g., according to the fronthaul interface protocol) or any combination thereof. The backhaul communication links 120, the midhaul communication links 162, or the fronthaul communication links 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 .

[0063] 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, stand-alone) base station architecture, which 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).

[0064] In some examples, the network entity 105 may be implemented in a disaggregated architecture (e.g., a disaggregated base station architecture, a disaggregated RAN architecture) that may 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 may include one or more of the following: a central unit (CU) 160, a distributed unit (DU) 165, a radio unit (RU) 170, a RAN intelligent controller (RIC) 175 (e.g., a near real-time RIC (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)).

[0065] The functional split between CU 160, DU 165, and RU 170 is flexible and may support different functionalities depending on which functions (e.g., network layer functions, protocol layer functions, baseband functions, RF functions, and any combination thereof) are performed at CU 160, DU 165, or RU 170. For example, a functional split of a protocol stack may be employed between CU 160 and DU 165 such that CU 160 may support one or more layers of a protocol stack and DU 165 may support one or more different layers of a protocol stack. In some examples, CU 160 may 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 DUs 165 and RUs 170, such that the DUs 165 may support one or more layers of the protocol stack, and the RUs 170 may support one or more different layers of the protocol stack. The DUs 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 the protocol layer (e.g., some functions of the 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) 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., 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.

[0066] 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., 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.

[0067] In the case where the techniques described herein are applied to the context of a disaggregated RAN architecture, one or more components of the disaggregated RAN architecture may be configured to support a flexible channel structure for paired radio spectrum bands as described herein. For example, some operations described as being performed by a UE 115 or a network entity 105 (e.g., a base station 140) may additionally or alternatively be performed by one or more components of the disaggregated RAN architecture (e.g., an IAB node 104, a DU 165, a CU 160, a RU 170, a RIC 175, a SMO 180).

[0068] 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 appliances or vehicles, meters, etc.

[0069] The UE 115 described herein may be capable of communicating with various types of devices, such as other UEs 115, which 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.

[0070] UE 115 and network entity 105 can use resources associated with one or more carriers to communicate with each other wirelessly via one or more communication links 125 (e.g., access links). The term "carrier" may refer to a set of operating frequency band resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of an operating frequency band (e.g., BWP) that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-APro, 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 communication with UE 115 using carrier aggregation or multi-carrier operation. According to the carrier aggregation configuration, UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used with FDD and TDD component carriers. Communication between the network entity 105 and other devices may refer to communication between these devices and any portion (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 portion 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).

[0071] In some examples, such as in a carrier aggregation configuration, a carrier may also 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 according to a channel raster 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 a carrier may operate in a non-standalone mode, in which case a different carrier (e.g., of the same or different radio access technology) is used to anchor the connection.

[0072] 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, as well as other transmission configurations. A carrier may carry downlink communications or uplink communications (e.g., in FDD mode), or may be configured to carry downlink communications and uplink communications (e.g., in TDD mode).

[0073] A carrier may be associated with a particular bandwidth of an operating band, 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 of carriers of a particular radio access technology (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 the carrier bandwidths in the 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 the carrier bandwidth.

[0074] The signal waveform transmitted via the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, 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 one symbol period (e.g., the duration of one modulation symbol) and one subcarrier, in which case the symbol period and the subcarrier spacing may be inversely related. The amount 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 higher amount of resource elements (e.g., in the transmission duration) and a relatively higher order of the modulation scheme may correspond to a relatively higher communication rate. Wireless communication resources may refer to a combination of operating band 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.

[0075] 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.

[0076] The time interval for the network entity 105 or the UE 115 may be expressed in multiples of a basic time unit, which may be, for example, a sampling period T s =1 / (Δf max ·N f ) seconds, where Δf max It can represent the supported subcarrier spacing, and N f The supported discrete Fourier transform (DFT) size may be indicated. 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).

[0077] 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, the 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 slots may be further divided into mini-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.

[0078] A subframe, a time slot, a mini-time 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 amount 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)).

[0079] Physical channels may be multiplexed using carriers for communication according to various techniques. Physical control channels and physical data channels may be multiplexed via downlink carriers for signaling, 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 UE115 may monitor or search a control region for 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 .

[0080] The network entity 105 may provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, 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 used to distinguish adjacent cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), or other cell identifier). In some examples, a cell may also refer to a coverage area 110 or a portion of 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.

[0081] 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. As compared to a macro cell, a small cell may be associated with a lower power network entity 105 (e.g., a lower power base station 140), and the small cell may operate using the same or different (e.g., licensed, unlicensed) frequency band as the macro cell. A small cell may provide unrestricted access to a UE 115 that has a service subscription with a network provider, or may provide restricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 associated with a user 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.

[0082] 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.

[0083] 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 respective coverage areas 110 using the same or different radio access technologies.

[0084] The wireless communication system 100 may be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 may be configured to support ultra-reliable low-latency communication (URLLC). UE 115 may be designed to support ultra-reliable or low-latency or critical functions. Ultra-reliable communication may include private communication or group communication, and may be supported by one or more services (such as push-to-talk, video, or data). Support for ultra-reliable, low-latency functions may include prioritization of services, and such services may be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, and ultra-reliable low-latency may be used interchangeably herein.

[0085] In some examples, a 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 by the network entity 105 (e.g., scheduled by the network entity). In some examples, one or more UEs 115 in such a group may be outside 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.

[0086] 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 layer (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 the 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.

[0087] 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) than communications using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0088] The wireless communication system 100 may utilize both licensed operating bands and unlicensed operating bands. For example, the wireless communication system 100 may employ license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology using unlicensed bands such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating using unlicensed operating bands, devices such as network entities 105 and UEs 115 may employ carrier sensing for collision detection and avoidance. In some examples, operations using unlicensed bands may be based on carrier aggregation configuration (e.g., LAA) in combination with component carriers operating using licensed bands. Operations using unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, and the like.

[0089] The network entity 105 (e.g., base station 140, RU 170) or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of the network entity 105 or UE 115 may be located in 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 geographical 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 can 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.

[0090] The network entity 105 or UE 115 may use MIMO communication to utilize multipath signal propagation and improve spectral efficiency by sending or receiving multiple signals via different spatial layers. Such a technique may be referred to as spatial multiplexing. The multiple signals may be sent, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, the multiple signals may be received by a receiving device via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry information associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports for channel measurement and reporting. MIMO techniques include: single-user MIMO (SU-MIMO), in which multiple spatial layers are sent to the same receiving device; and multi-user MIMO (MU-MIMO), in which multiple spatial layers are sent to multiple devices.

[0091] 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 transmitting device or a receiving device (e.g., a network entity 105, a UE 115) to shape or direct an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving 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 transmitting device or the receiving 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 direction (e.g., relative to the antenna array of the transmitting device or the receiving device or relative to some other direction).

[0092] UE 115 and network entity 105 may support retransmission of data to increase the likelihood of data being successfully received. Hybrid automatic repeat request (HARQ) feedback is a technique for increasing the likelihood of correctly receiving data via a communication link (e.g., communication link 125, D2D communication link 135). HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC)), forward error correction (FEC), and retransmission (e.g., automatic repeat request (ARQ)). HARQ may improve throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, a device may support same-slot HARQ feedback, in which case the device may provide HARQ feedback in a specific time slot for data received via a previous symbol in the time slot. In some other examples, the device may provide HARQ feedback in a subsequent time slot or according to some other time interval.

[0093] The wireless communication system 100 can support TDD and FDD using paired operating bands. For example, UE 115 can receive control signaling (e.g., from network entity 105), which includes an indication of a configuration for wireless communication with a wireless device (e.g., another UE 115, network entity 105) using a first operating band (e.g., paired operating band) of a radio spectrum band (e.g., FR1, FR2). The first operating band may include a first carrier paired with a second carrier. The first carrier may be separated from the second carrier in frequency and used for sending from UE 115 or receiving at UE 115, while the second carrier may be used for sending from UE 115 and receiving at UE 115. UE 115 may use the second carrier for both sending and receiving using TDD according to the configuration. In some examples, UE 115 may use the first carrier and the second carrier to communicate messages concurrently with the wireless device. For example, UE 115 may concurrently send multiple messages to a wireless device using the first carrier and the second carrier, concurrently receive multiple messages from a wireless device using the first carrier and the second carrier, or concurrently send one or more messages to a wireless device and receive one or more messages from a wireless device using the first carrier and the second carrier.

[0094] Figure 2 An example of a wireless communication system 200 supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is illustrated. In some examples, the wireless communication system 200 may implement aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a UE 215 and a network entity 205, which may be a reference Figure 1 The network entity 205 may operate within a coverage area 210. The coverage area 210 may be as described in reference Figure 1 An example of coverage area 110 is described.

[0095] In some examples, the wireless communication system 200 may be an example of a new radio (NR) system that supports communication using both paired operating bands and unpaired operating bands. As described herein, a paired operating band may refer to an operating band that includes a first set of frequencies configured for reception at UE 215 (e.g., a frequency range that may be referred to as an operating band or carrier) and a second set of frequencies paired with the first set of frequencies and configured for transmission at UE 215 (e.g., another frequency range that may also be referred to as an operating band or carrier). In some examples of paired operating bands, the first set of frequencies (e.g., a first operating band, a first carrier) and the second set of frequencies (e.g., a second operating band, a second carrier) may not overlap in frequency (e.g., separate). Additionally or alternatively, as described herein, an unpaired operating band may refer to a set of frequencies that may be used for both transmission and reception at UE 215 (e.g., a frequency range that may be referred to as an operating band or carrier). In some examples, a paired operating band may be used for FDD at UE 215, and an unpaired operating band may be used for TDD at UE 215. The unpaired operating band can provide increased flexibility in the downlink-uplink ratio (e.g., the ratio between the capacity for transmission from the UE and the capacity for reception at the UE) relative to the paired operating band. For example, using the unpaired operating band, the network entity 205 can flexibly allocate resources of the unpaired operating band for downlink and uplink communications based on traffic conditions (e.g., current traffic conditions) (e.g., increased capacity can be flexibly allocated to downlink reception or uplink transmission at the UE 215). In some examples, reducing the flexibility of the paired operating band (e.g., relatively low flexibility relative to the unpaired operating band) based on traffic conditions (e.g., based on current traffic conditions, such as if downlink traffic is heavier than uplink traffic) may result in underutilization of frequency resources within the wireless communication system 200.

[0096] In some examples, a flexible channel structure for paired radio spectrum bands (e.g., paired operating bands) as described herein can provide one or more enhancements to resource utilization within the wireless communication system 200. For example, the network entity 205 can configure the UE 215 with paired operating bands (e.g., a first operating band 220 and a second operating band 221), which the UE 215 can use to receive (e.g., receive communications) or transmit (e.g., transmit communications) or both. In such an example, the UE 215 can use the first operating band 220 (e.g., one carrier) to receive or transmit communications, and can use the second operating band 221 (e.g., another carrier) to switch between receiving and transmitting (e.g., in the time domain). That is, the flexible channel structure for paired operating bands as described herein can implement TDD (e.g., one or more TDD concepts) for paired operating bands (e.g., the first operating band 220 and the second operating band 221).

[0097] like Figure 2 As illustrated in the example of , the network entity 205 may configure the UE 215 to receive communications from the network entity using the first operating frequency band 220 and switch between sending communications to the network entity 205 and receiving communications from the network entity 205 using the second operating frequency band 221. For example, the UE 215 may receive (e.g., from the network entity 205) control signaling including a configured carrier indication 225 (e.g., carrier indication 225-a, carrier indication 225-b) for wireless communication with a wireless device (e.g., another UE 215, the network entity 205) using a paired operating frequency band (e.g., including the first operating frequency band 220 and the second operating frequency band 221) of a radio spectrum band (e.g., FR1, FR2). The paired operating frequency band may include a first operating frequency band 220 (e.g., a first carrier) paired with a second operating frequency band 221 (e.g., a second carrier). The first operating band 220 can be separated in frequency from the second operating band 221 and used for one of transmission from the UE 215 or reception at the UE 215, while the second operating band 221 can be used for both transmission from the UE 215 and reception at the UE 215. The UE 215 can use the second operating band 221 for both transmission and reception using TDD according to the configuration. In some examples, the UE 215 can communicate messages with the wireless device concurrently using the first operating band 220 and the second operating band 221. For example, the UE 215 can concurrently receive a message 230-a from the network entity 205 and send a message 230-b to the network entity using the first operating band 220 and the second operating band 221, respectively.

[0098] Although Figure 2The examples of the first operating frequency band 220 (e.g., the first carrier) are illustrated as being used for reception at the UE 215, but it should be understood that the first operating frequency band 220 can be used for transmission or reception at the UE 215, and the examples described herein should not be considered to limit the scope of the claims or the present disclosure. Additionally or alternatively, although Figure 2 The example of illustrates that the second operating frequency band 221 (e.g., the second carrier) is used for both transmission and reception at the UE 215, but it should be understood that the UE 215 can switch transmission and reception on the first operating frequency band 220 or the second operating frequency band 221, and the examples described herein should not be considered to limit the scope covered by the claims or the present disclosure. For example, switching between transmission and reception (e.g., in the time domain) can occur on both the first operating frequency band 220 or the second operating frequency band 221. Additionally or alternatively, as described herein, reception at the UE 215 may include downlink reception or sidelink reception (or both), and transmission at the UE 215 may include uplink transmission or sidelink reception (or both). In some examples, configuring the UE 215 to receive communications from the network entity 205 using the first operating frequency band 220 and switching between sending communications to the network entity 205 and receiving communications from the network entity 205 using the second operating frequency band 221 can improve resource utilization within the wireless communication system 200 and other possible benefits.

[0099] Figure 3 An example of a carrier configuration diagram 300 supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is illustrated. In some examples, the carrier configuration diagram 300 can implement aspects of the wireless communication system 100 and the wireless communication system 200. For example, the carrier configuration diagram 300 can be implemented at the UE and the network entity, which can be as described in reference Figure 1 and Figure 2 Examples of corresponding devices described.

[0100] In some examples, the network (e.g., a network entity) may configure the UE to identify an operating band (e.g., a carrier, a frequency resource) for transmission or reception at the UE and another operating band (e.g., another carrier, another set of frequencies) for transmission and reception at the UE in two paired operating bands (e.g., paired spectrum). For example, the network entity may configure the UE to perform operations that may include both TDD and FDD operations (e.g., a combination thereof). Additionally or alternatively, the network entity may provide (e.g., send) multiple band indications (e.g., operating band indications) to the UE (e.g., as part of the configuration).

[0101] In some examples, the network entity may send an indication of a paired carrier (e.g., a paired carrier indication, a paired operating band indication) and an indication of an unpaired carrier (e.g., an unpaired carrier indication, an unpaired operating band indication) to the UE. Figure 3 As illustrated in the example of , the UE may receive a paired carrier indication identifying a paired operating band (e.g., a serving cell, such as n1), the paired operating band including a first operating band 320 to be used for reception at the UE (e.g., downlink reception, sidelink reception) and a second operating band 321 to be used for transmission at the UE (e.g., uplink transmission or sidelink transmission). The first operating band 320 may include a first carrier 325 (e.g., a set of frequencies, such as 2110 MHz–2170 MHz), and the second operating band 321 may include a second carrier 326 (e.g., another set of frequencies, such as 1920 MHz–1980 MHz). Additionally or alternatively, the UE may receive an unpaired carrier indication identifying an unpaired operating band (e.g., another serving cell, such as n2). For example, the unpaired carrier indication may identify the unpaired operating band as the second operating band 321, which may include a second carrier 326 (e.g., the set of frequencies ranging from 1920 MHz–1980 MHz). In some examples, based on receiving the paired carrier indication and the unpaired carrier indication, the UE can determine that the second carrier 326 (e.g., the relatively lower frequency range of the serving cell n1) can be used for both transmission and reception at the UE. Figure 3 The examples illustrate the first operating band 320 as being used for reception at the UE, but it should be understood that the first operating band 320 can be used for transmission or reception at the UE, and the examples described herein should not be construed as limiting the scope of the claims or the present disclosure.

[0102] In some examples, the UE may receive multiple unpaired carrier indications. For example, the UE may receive a first unpaired carrier indication that identifies the first carrier 325 as a supplementary carrier (e.g., a supplementary downlink carrier (SDL) or a supplementary uplink carrier (SUL)) and a second unpaired carrier indication that identifies the second carrier 326 as a normal TDD carrier. In some examples, based on receiving the first unpaired carrier indication and the second unpaired carrier indication, the UE may determine that the first operating band 320 may be used for transmission or reception at the UE, and the second carrier 326 may be used for both transmission and reception at the UE. In some examples, the UE may receive one or more other combinations of unpaired carrier indications that indicate that the first operating band 320 may be used for transmission or reception at the UE, and that the second carrier 326 may be used for both transmission and reception at the UE.

[0103] For example, the UE may receive a first unpaired carrier indication that identifies the first carrier 325 as a normal TDD carrier and a second unpaired carrier indication that identifies the second carrier 326 as a normal TDD carrier. Additionally or alternatively, the UE may receive multiple (e.g., three or four) unpaired carrier indications that identify the first carrier 325 and the second carrier 326 as one or more supplementary carriers. For example, the UE may receive a first unpaired carrier indication that identifies the first carrier 325 as SDL, a second unpaired carrier indication that identifies the second carrier 326 as SDL, and a third unpaired carrier indication that identifies the second carrier 326 as SUL. Additionally or alternatively, the UE may receive a first unpaired carrier indication that identifies the first carrier 325 as SUL, a second unpaired carrier indication that identifies the second carrier 326 as SUL, and a third unpaired carrier indication that identifies the second carrier 326 as SDL. In some examples, the UE may receive a first unpaired carrier indication identifying the first carrier 325 as a SUL, a second unpaired carrier indication identifying the first carrier 325 as another SUL, a third unpaired carrier indication identifying the second carrier 326 as an SDL, and a fourth unpaired carrier indication identifying the second carrier 326 as another SDL.

[0104] In some examples, the unpaired carrier indication may use the operating band number assigned to the corresponding carrier (or one or more other numbers, indicators or indices corresponding to the corresponding operating bands associated with the first carrier 325 and the second carrier 326) to identify the carrier (e.g., the first carrier 325 or the second carrier 326) as a normal TDD carrier or a supplementary carrier (e.g., SUL or SDL). That is, the unpaired carrier indication may use an identifier (e.g., operating band number, indicator or index) associated with the first operating band 325 to identify to the UE whether the first carrier 320 is a normal TDD carrier or a supplementary carrier. Additionally or alternatively, the unpaired carrier indication may use an identifier (e.g., operating band number, indicator or index) associated with the second operating band 326 to identify to the UE whether the second carrier 321 is a normal TDD carrier or a supplementary carrier. In some examples, the association information (e.g., association information between the carrier and the corresponding operating band) may be provided (e.g., indicated) to the UE from a network entity (e.g., via broadcast signaling, dedicated signaling), or configured at the UE in other ways.

[0105] In some other examples, the UE may receive an indication (e.g., one indication) identifying a combination (e.g., hybrid) of TDD and FDD operations at the UE (e.g., for the first carrier 325 and the second carrier 326). For example, the UE may receive an indication that an operating band is assigned for the combination of TDD and FDD operations (e.g., using an operating band number, indicator, or index). That is, the UE may receive an indication that an operating band number, indicator, or index associated with the first operating band 320 is assigned for one or both of TDD or FDD operations, and another indication that an operating band number, indicator, or index associated with the second operating band 321 is assigned for one or both of TDD or FDD operations.

[0106] In some examples, a network entity may configure the UE (or the UE may be configured otherwise) with one or more rules for switching between transmission and reception at the UE (e.g., using the second carrier 326). For example, the UE may perform switching of reception and transmission semi-statically or dynamically. In some examples of semi-static switching between reception and transmission at the UE, the UE may receive an indication that the UE is configured with a TDD configuration (or the UE may be configured otherwise). For example, the UE may receive an indication of a TDD configuration (e.g., via a tdd-UL-DL-ConfigurationCommon information element (IE) or a tdd-UL-DL-ConfigurationDedicated IE), which may indicate one or more durations (e.g., time slots, symbols, time intervals) that the UE may use the second carrier 326 for transmission (e.g., uplink transmission) and one or more other durations (e.g., other time slots, other symbols, other time intervals) that the UE may use the second carrier 326 for reception. Additionally or alternatively, in some examples of dynamic switching between reception and transmission at the UE, the network entity may instruct the UE (e.g., via a medium access control element (MAC-CE) or downlink control information (DCI)) to use the second carrier 326 for transmission or reception.

[0107] In some examples, the UE may utilize a BWP to determine whether to use the carrier 326 for transmission or reception. That is, the UE may switch between using the second carrier 326 for transmission and using the second carrier 326 for reception based on one or more BWPs indicated to the UE for the second carrier 326. For example, the second carrier 326 may be configured (e.g., at the UE) with a first BWP of the second carrier 326 for reception (e.g., downlink reception, sidelink reception) and a second BWP of the second carrier 326 for transmission (e.g., uplink transmission, sidelink transmission). In some examples, the transmission and reception switching (e.g., using the first BWP and the second BWP) may be performed at the UE using one or more BWP switching mechanisms. Additionally or alternatively, a default BWP (e.g., relative to the first active BWP) may be identified at the UE (e.g., implicitly determined) based on the configuration behavior of the carriers within the paired operating band. In some examples, the UE may determine the default BWP of the second carrier 326 (e.g., and the communication direction, such as transmission or reception) based on the paired carrier indication. For example, the UE may receive a paired carrier indication identifying that the second carrier 326 (e.g., a relatively lower frequency range carrier of the paired operating band) is to be used at the UE for transmission (e.g., uplink transmission or sidelink transmission). Thus, if the second carrier 326 is configured with a first BWP to be used for reception and a second BWP to be used for transmission, the UE may identify (e.g., determine, consider) the second BWP (e.g., a BWP configured at the UE for transmission, a transmission BWP) as the default BWP for the second carrier 326.

[0108] In some examples, a carrier (e.g., a second carrier 326) may be configured with multiple BWPs associated with multiple (e.g., different) TDD configurations. For example, the second carrier 326 may be configured with one or more first BWPs for reception (e.g., downlink reception, sidelink reception) and one or more second BWPs for transmission (e.g., uplink transmission, sidelink transmission). In some examples, one or more default BWPs may be identified (e.g., implicitly determined) at the UE based on the configuration behavior of the carrier within the paired operating band. For example, the UE may determine one or more default BWPs (e.g., and a communication direction, such as transmission or reception) for the second carrier 326 based on the configuration behavior of the second carrier 326 within the paired operating band. In some examples, the UE may determine one or more default BWPs (e.g., and a communication direction, such as transmission or reception) for the second carrier 326 based on a paired carrier indication. For example, the UE may receive a paired carrier indication identifying that the second carrier 326 (e.g., a relatively lower frequency range carrier of the paired operating band) is to be used for transmission (e.g., uplink transmission or sidelink transmission), and based on the paired carrier indication, one or more second BWPs (e.g., all BWPs configured for transmission) may be identified (e.g., determined, considered) as the default BWP for the second carrier 326. Additionally or alternatively, the UE may select a transmit-receive ratio based on an associated BWP. For example, the UE may select a transmit-receive ratio from a plurality of (e.g., different) transmit-receive ratios by switching the BWP (e.g., by switching an active BWP at the UE to a BWP associated with the selected transmit-receive ratio).

[0109] In some techniques for transport channel mapping, transport channels and corresponding structures of transport channels may be defined for specific types of communication links (e.g., downlink, uplink, and sidelink). For example, some techniques may utilize mappings (e.g., fixed relationships) between transport channels and signal directions and between transport channels and logical channels, which may be rigid and inflexible. In some examples, in order to achieve one or more enhancements to the throughput of wireless communication between a UE and a network entity, the UE (and the network entity) may use flexible mappings (e.g., relationships between transport channels, logical channels, and signal directions) utilizing multiple (e.g., different) transport channels or logical channels (or both). For example, some techniques for transport channel mapping may consider other structures, such as structures utilizing a side link (e.g., having a downlink and an uplink), which may provide flexible mappings between transport channels and signal directions and between transport channels and logical channels. For example, using such techniques, reception at the UE may include sidelink reception and downlink reception, and transmission at the UE may include sidelink transmission and uplink transmission. In some examples, utilizing a sidelink (e.g., together with a downlink and an uplink) can provide increased flexibility, which can be achieved by relatively frequently utilizing the sidelink to implement additional types of communication links or additional transport channels (e.g., new possible behaviors). For example, a sidelink channel (e.g., a physical sidelink shared channel (PSSCH)) can be used at the UE to replace one or more (e.g., additional) downlink channels or one or more (e.g., additional) uplink channels. In some examples, the UE can determine whether a particular transport channel can be used for transmission or reception based on an indication from a network entity. For example, the UE can receive an indication identifying (e.g., via a mapping) one or more transport channels that can be used for reception and one or more transport channels that can be used for transmission. In some examples, the UE can receive the indication using layer three (L3) signaling (e.g., RRC signaling), layer two (L2) signaling (e.g., via MAC-CE), or layer one (L1) signaling (e.g., via DCI).

[0110] In some examples, multiple service access points (SAPs) may be used in an L2 signaling path (e.g., an L2 flow), and thereby, a network (e.g., a network entity) may define multiple channel mappings. For example, a quality of service (QoS) flow (e.g., at the SDAP layer of the protocol stack) may be mapped on a downlink bearer or an uplink bearer and a sidelink bearer (e.g., at the PDCP layer of the protocol stack). In some examples, a radio bearer (e.g., from the PDCP layer of the protocol stack) may be mapped on a downlink RLC channel (e.g., a downlink RLC bearer) or an uplink RLC channel (e.g., an uplink RLC bearer) and a sidelink RLC channel (e.g., a sidelink RLC bearer) of the RLC layer. Additionally or alternatively, an RLC channel (e.g., an RLC bearer) may be mapped on a downlink logical channel or an uplink logical channel and a sidelink logical channel (e.g., at the MAC layer of the protocol stack). In some examples, a logical channel may be mapped on a downlink transport channel or an uplink transmission channel and a sidelink transport channel (e.g., at the PHY layer, at L1). In some examples, such mapping (e.g., association between layers of the protocol stack) may be indicated to the UE using control signaling (e.g., control message) in a layer (e.g., any of multiple layers) such as a NAS layer, an RRC layer (e.g., L3), an SDAP layer, a PDCP layer, an RLC layer, a MAC layer, or L1 (e.g., via DCI).

[0111] Figure 4A and Figure 4B Examples of resource allocation diagrams 400 (e.g., resource allocation diagrams 400-a and 400-b, respectively) supporting flexible channel structures for paired radio spectrum bands according to one or more aspects of the present disclosure are illustrated. In some examples, resource allocation diagrams 400 can implement aspects of wireless communication system 100, wireless communication system 200, and carrier configuration diagram 300. For example, resource allocation diagrams 400 can be implemented at UEs and network entities, which can be as described in reference to Figures 1 to 3 Examples of corresponding devices described.

[0112] In some examples, the network (e.g., via a network entity) may configure the UE to use one of the two paired operating bands (e.g., the first carrier) for transmission or reception at the UE, and to use another operating band (e.g., another paired operating band of the two paired operating bands, an unpaired operating band) for transmission and reception at the UE. For example, the UE may be configured to use a first operating band 420 (e.g., as described in reference Figure 4A The first operating frequency band 420-a described or as referenced Figure 4B The first operating frequency band 420-b described above and the second operating frequency band 421 (eg, as described in reference Figure 4AThe second operating frequency band 421-a described or as referenced Figure 4B In some examples, the UE may be configured to use the first operating band 420 for transmission or reception at the UE, and to use the second operating band 421 for both transmission and reception at the UE. For example, the UE may perform receive and transmit switching using the second operating band 421. In some examples of receive and transmit switching (e.g., using the second operating band 421), the UE may use one or more carriers of the paired operating bands to receive or transmit signals (e.g., messages, communications). In such examples, the UE may use one or more (e.g., several) modeling candidates to determine (e.g., select) a carrier for communicating with a network entity (or one or more other communication devices, one or more other wireless devices).

[0113] For example, Figure 4A As illustrated in the example of , the network can allocate one or more resources to the UE from a resource pool 425, which may include resources of a first carrier of a first operating frequency band 420-a and a second carrier of a second operating frequency band 421-a. In some examples, the UE can use a modeling candidate in which two carriers (e.g., a first carrier of a first operating frequency band 420-a and a second carrier of a second operating frequency band 421-a) can be scheduled using common scheduling information. For example (e.g., for such modeling), frequency resources across multiple carriers (e.g., of a first operating frequency band 420-a and a second operating frequency band 421-a) can be combined (e.g., regarded as) a virtual resource pool (e.g., a virtual resource pool, resource pool 425). That is, resource pool 425 can be an example of a virtual resource pool that includes one or more frequency resources associated with a first carrier of a first operating frequency band 420-a and one or more other resources associated with a second carrier of a second operating frequency band 421-a, and can be used to allocate resources to the UE. In such an example, scheduling information (eg, one piece of scheduling information, such as a single DCI sent from a network entity to a UE) may indicate to the UE an allocation of resources from resource pool 425 .

[0114] In some other examples, such as Figure 4BAs illustrated in the example of , each carrier (e.g., the first carrier of the first operating band 420-a and the second carrier of the second operating band 421-a) can be scheduled by corresponding (e.g., corresponding) scheduling information. For example, the first carrier of the first operating band 420-b can be scheduled by signaling received at the UE using the first carrier (e.g., or one or more other carriers of the first operating band 420-b), and the second carrier of the second operating band 421-b can be scheduled by signaling received at the UE using the second carrier (e.g., or one or more other carriers of the second operating band 421-b). In some examples, the first operating band 420-b and the second operating band 421-b can be included in the same serving cell. In such examples, the UE can aggregate one or more BWPs of the first operating band 420-b and the second operating band 421-b (e.g., one or more BWPs of the first operating band 420-b and one or more other BWPs of the second operating band 421-b). That is, the UE may be allocated resources from a resource aggregation 426, which may include one or more BWPs of a first operating band 420-b (e.g., one or more BWPs of a first carrier of the first operating band 420-b) and one or more other BWPs of a second operating band 421-b (e.g., one or more BWPs of a second carrier of the second operating band 421-b). Additionally or alternatively, the first operating band 420-b and the second operating band 421-b may be included in multiple (e.g., different) service cells. In such an example, the UE may aggregate one or more carriers of the first operating band 420-b and the second operating band 421-b (e.g., such as for carrier aggregation or dual connectivity). That is, the UE may be allocated resources from a resource aggregation 426, which may include one or more carriers of the first operating band 420-b and one or more other carriers of the second operating band 421-b.

[0115] Figure 5A , Figure 5B , Figure 5C , Figure 5D and Figure 5E Examples of carrier scheduling diagrams 500 (e.g., carrier scheduling diagram 500-a, carrier scheduling diagram 500-b, carrier scheduling diagram 500-c, carrier scheduling diagram 500-d, and carrier scheduling diagram 500-e) supporting flexible channel structures for paired radio spectrum bands according to one or more aspects of the present disclosure are illustrated. In some examples, carrier scheduling diagram 500 can implement aspects of wireless communication system 100, wireless communication system 200, carrier configuration diagram 300, and resource allocation diagram 400. For example, carrier scheduling diagram 500 can be implemented at UE and network entities, which can be as described in reference Figures 1 to 3 , Figure 4A and Figure 4BExamples of corresponding devices described.

[0116] In some examples, the network (e.g., a network entity) may configure the UE to use one of the two paired operating bands (e.g., a carrier) for transmission or reception at the UE, and use another operating band (e.g., another paired operating band of the two paired operating bands, an unpaired operating band) for transmission and reception at the UE. In some examples, the UE network may use common scheduling information to schedule the UE to communicate using the paired operating band using the common scheduling information. Additionally or alternatively, the network may schedule the UE to communicate using the first operating band (e.g., in the paired operating band) via scheduling information corresponding to the first operating band, and may schedule the UE to communicate using the second operating band (e.g., in the paired operating band) via scheduling information corresponding to the second operating band. That is, the network may schedule each operating band in the paired operating band using common scheduling information (e.g., scheduling information for two operating bands for one of the paired operating bands may be sent) or corresponding scheduling information (e.g., scheduling information for each operating band may be sent using the corresponding operating band). In other words, the UE may receive one or more scheduling information (e.g., one or more messages including scheduling information, such as one or more DCIs), and may use one or more operating bands (e.g., carriers) to receive the scheduling information. Thus, one or more (e.g., several) relationships between carrier scheduling (e.g., one or more carriers used at the UE to receive scheduling information) and scheduled carriers (e.g., one or more carriers or BWPs of carriers allocated to the UE for communication) may be considered (e.g., for allocating resources to the UE).

[0117] like Figure 5A As illustrated in the example of , the network may configure the UE with a paired operating band including a first operating band 520-a and a second operating band 521-a (or the UE may be configured in other ways). In some examples, the first operating band 520-a may be used at the UE for reception (e.g., using a first carrier 525-a), and the second operating band 521-a may be used at the UE for transmission (e.g., using a second carrier 530-a) and reception (e.g., using a second carrier 530-b). Although Figure 5A The example of illustrates that the first operating frequency band 520-a is used for reception at the UE, but it should be understood that the first operating frequency band 520-a can also be used for transmission at the UE, and the examples described herein should not be considered to be limited to the scope covered by the claims or the present disclosure. Figure 5AIn an example, a carrier (or BWP) configured at a UE may be scheduled from (e.g., using) a first carrier 525-a (e.g., a receiving carrier, a carrier of a first operating band 520-a, a carrier of an operating band configured at the UE for sending or receiving). For example, the UE may use the first carrier 525-a to receive signaling (e.g., control signaling, such as one or more DCIs), which may include scheduling information for the first carrier 525-a (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the first carrier 525-a), the second carrier 530-a (e.g., an indication of resources allocated for sending communications such as uplink communications at the UE using the second carrier 530-a), and the second carrier 530-b (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the second carrier 530-b).

[0118] like Figure 5B As illustrated in the example of , the network may configure the UE with a paired operating band including a first operating band 520-b and a second operating band 521-b (or the UE may be configured in other ways). In some examples, the first operating band 520-b may be used at the UE for reception (e.g., using the first carrier 525-b), and the second operating band 521-b may be used at the UE for transmission (e.g., using the second carrier 530-c) and reception (e.g., using the second carrier 530-d). Although Figure 5B The example of illustrates that the first operating frequency band 520-b is used for reception at the UE, but it should be understood that the first operating frequency band 520-b can also be used for transmission at the UE, and the examples described herein should not be considered to be limited to the scope covered by the claims or the present disclosure. Figure 5B In the example, the carrier (or BWP) configured at the UE can be self-scheduled (e.g., using the corresponding carrier). For example, the UE may use the first carrier 525-b to receive signaling (e.g., control signaling, such as one or more DCIs), which may include scheduling information for the first carrier 525-b (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the first carrier 525-b). Additionally or alternatively, the UE may use the second carrier 530-d to receive signaling (e.g., control signaling, such as one or more DCIs), which may include scheduling information for the second carrier 530-d (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the second carrier 530-d), or scheduling information for the second carrier 530-c (e.g., an indication of resources allocated for sending communications such as uplink communications at the UE using the second carrier 530-c), or both.

[0119] like Figure 5C As illustrated in the example of , the network may configure the UE with a paired operating band including a first operating band 520-c and a second operating band 521-c (or the UE may be configured in other ways). In some examples, the first operating band 520-c may be used at the UE for reception (e.g., using a first carrier 525-c), and the second operating band 521-c may be used at the UE for transmission (e.g., using a second carrier 530-e) and reception (e.g., using a second carrier 530-f). Although Figure 5C The example illustrates that the first operating frequency band 520-c is used for reception at the UE, but it should be understood that the first operating frequency band 520-c can also be used for transmission at the UE, and the examples described herein should not be considered to be limited to the scope covered by the claims or the present disclosure. Figure 5C In an example, a carrier (or BWP) configured at the UE may be scheduled from (e.g., using) a second carrier 530-f (e.g., a receiving carrier, a carrier of a second operating band 521-c, a carrier of an operating band configured at the UE for sending and receiving). For example, the UE may use the second carrier 530-f to receive signaling (e.g., control signaling, such as one or more DCIs), which may include scheduling information for the first carrier 525-c (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the first carrier 525-c), the second carrier 530-e (e.g., an indication of resources allocated for sending communications such as uplink communications at the UE using the second carrier 530-e), and the second carrier 530-f (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the second carrier 530-f).

[0120] like Figure 5D As illustrated in the example of , the network may configure the UE with a paired operating band including a first operating band 520-d and a second operating band 521-d (or the UE may be configured in other ways). In some examples, the first operating band 520-d may be used at the UE for reception (e.g., using a first carrier 525-d), and the second operating band 521-d may be used at the UE for transmission (e.g., using a second carrier 530-g) and reception (e.g., using a second carrier 530-h). Although Figure 5D The example illustrates that the first operating frequency band 520-d is used for reception at the UE, but it should be understood that the first operating frequency band 520-d can also be used for transmission at the UE, and the examples described herein should not be considered to be limited to the scope covered by the claims or the present disclosure. Figure 5DIn an example, the carriers (or BWPs) configured at the UE can be partially self-scheduled (e.g., some carriers can be scheduled using corresponding carriers). For example, the UE can use the first carrier 525-d to receive signaling (e.g., control signaling, such as one or more DCIs), which may include scheduling information for the first carrier 525-d (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications using the first carrier 525-d at the UE), or scheduling information for the second carrier 530-g (e.g., an indication of resources allocated for sending communications such as uplink communications using the second carrier 530-g at the UE), or both. Additionally or alternatively, the UE may use the second carrier 530-h to receive signaling (e.g., control signaling, such as one or more DCIs), which may include scheduling information for the second carrier 530-h (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the second carrier 530-h), or scheduling information for the second carrier 530-g (e.g., an indication of resources allocated for sending communications such as uplink communications at the UE using the second carrier 530-g), or both.

[0121] like Figure 5E As illustrated in the example of , the network may configure the UE with a paired operating band including a first operating band 520-e and a second operating band 521-e (or the UE may be configured in other ways). In some examples, the first operating band 520-e may be used at the UE for reception (e.g., using a first carrier 525-e), and the second operating band 521-e may be used at the UE for transmission (e.g., using a second carrier 530-i) and reception (e.g., using a second carrier 530-j). Although Figure 5D The example of illustrates that the first operating frequency band 520-e is used for reception at the UE, but it should be understood that the first operating frequency band 520-e can also be used for transmission at the UE, and the examples described herein should not be considered to be limited to the scope covered by the claims or the present disclosure. Figure 5EIn an example, carriers (or BWPs) configured at the UE may be cross-scheduled (e.g., a carrier may be scheduled using one or more other carriers). For example, the UE may use a first carrier 525-e to receive signaling (e.g., control signaling, such as one or more DCIs), which may include scheduling information for a second carrier 530-j (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the second carrier 530-j), or scheduling information for a second carrier 530-i (e.g., an indication of resources allocated for sending communications such as uplink communications at the UE using the second carrier 530-i), or both. Additionally or alternatively, the UE may use a second carrier 530-h to receive signaling (e.g., control signaling, such as one or more DCIs), which may include scheduling information for a first carrier 525-e (e.g., an indication of resources allocated for receiving communications such as downlink communications or sidelink communications at the UE using the first carrier 525-e).

[0122] In some examples, the UE may receive multiple scheduling information, such as multiple messages from one or more carriers, including scheduling information for the corresponding carrier or one or more other carriers. In such examples, the UE may determine (e.g., distinguish) which carrier (or BWP) the scheduling information is for based on one or more rules (e.g., configured at the UE). For example, the UE may receive signaling (e.g., including an indication) indicating the carrier (or BWP) to which the scheduling information corresponds. In some examples, the indication may identify (e.g., indicate) the scheduled BWP (e.g., corresponding to the carrier). Additionally or alternatively, the indication may identify (e.g., indicate) a subcarrier indicator field (e.g., a sub-CIF, a subcarrier indicator field corresponding to the carrier).

[0123] In some examples, the UE may be configured to perform a stop-and-wait protocol (e.g., a HARQ process), where if the network (or UE) is using one or more carriers to wait for feedback about a packet (e.g., a currently or previously transmitted packet), another packet may not be transmitted. In some examples, the round-trip time associated with one or more HARQ processes may result in underutilization of radio resources (e.g., of the configured operating band). In some other examples, the UE may be configured to perform multiple concurrent HARQ processes, and each process may include packets pending (e.g., one packet pending). In some examples, such as for downlink and uplink, the UE may support a certain amount of HARQ processes per cell (e.g., up to about 16 HARQ processes). In some examples, the HARQ process may be applied to transmissions on a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH). Additionally or alternatively, feedback for the PDSCH may be sent using a physical uplink control channel (PUCCH) or PUSCH, and feedback for the PUSCH may be sent via an uplink grant (e.g., due to the receiver and scheduler being at the network, such as at a gNB).

[0124] In some examples, the UE may use the same number of HARQ processes for one or more of the carriers (e.g., one or more first carriers 525 or one or more second carriers 530 configured at the UE). Additionally or alternatively, the UE may use (e.g., select, prepare) one or more specific HARQ processes (e.g., dedicated HARQ processes) for one or more of the carriers (e.g., one or more first carriers 525 or one or more second carriers 530 configured at the UE). For example, the UE may use a certain number of HARQ processes (e.g., about 16 HARQ processes) for a carrier with a relatively low frequency, and a certain number of HARQ processes (e.g., about 16 HARQ processes) for a carrier with a relatively high carrier frequency. In some examples, the HARQ process for a carrier with a relatively low frequency may include (e.g., share) one or more identical HARQ processes that can be used with a carrier with a relatively high frequency. That is, a certain number of HARQ processes (e.g., about 16 HARQ) may be shared (e.g., and used for) between a carrier with a relatively low frequency and a carrier with a relatively high frequency, respectively. In some examples, HARQ processes may be semi-statically assigned for each carrier (e.g., configured via RRC signaling, such as using an nrofHARQ-ProcessesForPDSCH IE) or dynamically determined (e.g., decided), such as via network scheduling (e.g., using DCI).

[0125] In some examples, the UE may utilize a feedback scheme (e.g., an ACK or NACK feedback scheme) for a carrier (e.g., a single carrier). For example, the UE may not be able to receive (or the network may not be able to send) a signal on any carrier (e.g., the first carrier 525 of the first operating band 520 or the second carrier 530 of the second operating band 521). In such an example, the UE may utilize feedback based on code block groups (CBGs). For example, the UE may utilize CBG-based feedback (e.g., ACK or NACK feedback) so that the UE may send (e.g., may feedback) one or more ACKs or one or more NACKs per CBG (e.g., based on the CBG), and may not be able to receive (e.g., may not expect to receive, may not monitor) a code block (CB) sent on one or more resources on the corresponding carrier. Additionally or alternatively, the UE may utilize a feedback scheme (e.g., an ACK or NACK feedback scheme) for multiple carriers (e.g., such as for carrier aggregation). For example, both carriers (e.g., the first carrier 525 of the first operating frequency band 520 or the second carrier 530 of the second operating frequency band 521) may be used for transmission, and therefore, the UE may receive (e.g., from the network) an indication of a carrier (e.g., one or more frequency resources of a carrier) to be used for sending feedback (e.g., ACK or NACK). Additionally or alternatively, the UE may determine (e.g., assume) the same transmission configuration indicator (TCI) state for both carriers (e.g., the first carrier 525 of the first operating frequency band 520 or the second carrier 530 of the second operating frequency band 521).

[0126] In some examples, the UE may be configured to use a paired operating band that includes a carrier to be used for downlink reference signal reception and downlink data reception (e.g., a downlink carrier) and another carrier to be used for uplink transmission (e.g., an uplink carrier). In such examples, the UE may be configured to use the downlink carrier to receive one or more system information blocks (SIBs) or one or more random access channel (RACH) messages, such as the second message of a four-step RACH procedure (e.g., RACH Msg2). Additionally or alternatively, the UE may be configured to use the uplink carrier to send a physical random access channel (PRACH) message (e.g., a RACH preamble) or one or more other RACH messages, such as the first message as part of a two-step RACH procedure (e.g., RACH MsgA).

[0127] However, in some examples, the UE may be configured to use multiple carriers for transmission, reception, or both. Figure 5AAs illustrated in the example of , the UE may be configured to use both the first carrier 525-a of the first operating frequency band 520-a and the second carrier 530-b of the second operating frequency band 521-a for reception (e.g., downlink reference signal reception, downlink data reception, sidelink reception), and use the second carrier 530-a of the second operating frequency band 521-a for transmission (e.g., uplink transmission). In such an example, the UE may determine whether to use the first carrier 525-a or the second carrier 530-b to receive a specific message. That is, the UE may determine one or more carriers (e.g., multiple candidate options) for sending or receiving a specific message. For example, the UE may determine one or more carriers (e.g., which carriers) to use for downlink data reception (e.g., reception of SIBs), downlink reference signal reception (e.g., reception of synchronization signal blocks (SSBs) or channel state information reference signals (CSI-RSs)), and reception of one or more messages sent from the network as part of a RACH procedure (e.g., such as RACH Msg2 reception during a four-step RACH procedure, or such as RACH MsgB reception during a two-step RACH procedure). Additionally or alternatively, the UE may determine one or more carriers (e.g., which carriers) to use for one or more messages sent from the UE as part of a RACH procedure (e.g., PRACH transmission, such as RACH MsgA transmission during a two-step RACH procedure, or such as Msg1 transmission during a four-step RACH procedure).

[0128] In some examples, a downlink reference signal (e.g., SSB or CSI-RS) may be used at the UE for timing or power control. For example, for UE power control, the UE may apply an offset for random access preamble (e.g., RACH preamble) transmission. In some examples, the value of the offset may be indicated to the UE (e.g., signaled from the network) and used at the UE, for example to compensate for downlink-uplink coupling loss. In some examples, the value of the offset (e.g., an appropriate value of the offset) may vary (e.g., change, different) depending on the carrier used by the UE for random access preamble transmission and downlink reference signal reception. For example, if the same carrier (e.g., a relatively low frequency carrier) is used for random access preamble transmission and downlink reference signal reception, the value of the offset may be set to 0 (e.g., or some other appropriate value). In other examples (e.g., examples of using different carriers for random access preamble transmission and downlink reference signal reception), the offset may be set to a value greater than 0.

[0129] In some examples, the UE may determine to use (e.g., may select, may follow) one or more carriers that may be used as part of a default process. For example, the UE may select a carrier that may be used for downlink reception as part of a default process for downlink message reception. Additionally or alternatively, the UE may select a carrier that may be used for uplink transmission as part of a default process for uplink message transmission. In some examples, the UE may use multiple carriers for reception (e.g., both the first carrier 525-a of the first operating frequency band 520-a or the second carrier 530-b of the second operating frequency band 521-a). Additionally or alternatively, the UE may use multiple carriers (e.g., two carriers) for transmission and reception. In some examples, the UE may use a carrier (e.g., a specific carrier) indicated to the UE (e.g., from the network). That is, the UE may use any combination of carriers for transmission or reception (or both). As an illustrative example, the UE may use a first receiving carrier (e.g., as described in reference to Figure 5A The first carrier 525-a described above), the second received carrier (e.g., as described in reference Figure 5A The second carrier 530-b described above is received and the transmitting carrier (e.g., as described in reference Figure 5A In some examples, the UE may use the first receiving carrier, the second receiving carrier, and the transmitting carrier to send a message or receive a message (or both) according to the following Table 1:

[0130]

[0131] In some examples, the first receiving carrier may include a relatively high frequency, and the second receiving carrier (e.g., and the transmitting carrier) may include a relatively low frequency. In such examples (e.g., and according to Table 1), the UE may be configured to receive messages using both the first receiving carrier and the second receiving carrier (e.g., all receiving behaviors may be enabled for relatively low frequency carriers and relatively high frequency carriers). In some examples, the UE may determine to use a carrier (e.g., a carrier may be randomly selected from a plurality of carriers with equal probability), and perform an action (e.g., receive a message) in the determined (e.g., selected) carrier. In such examples, preamble information (e.g., RACH preamble information, PRACH information) may be used to determine one or more carriers (e.g., distinguish which carriers) that the UE can access and use to receive (e.g., expect to receive, monitor) a response message (e.g., a message sent to the UE in response to the UE sending a PRACH message such as RACH Msg2 or RACH MsgB).

[0132] Additionally or alternatively, the UE may be configured to receive some messages using both the first receiving carrier and the second receiving carrier. For example, the receiving behavior of the second receiving carrier (e.g., a relatively low frequency carrier) may exclude SSB and SIB reception. In such an example, the UE may detect (e.g., read) SSB or SIB (or both) using the first receiving carrier (e.g., a relatively high frequency carrier) and perform the remaining reception (e.g., the remaining) using any one of the carriers (e.g., the first receiving carrier, the second receiving carrier, or both). In some examples, such carriers (e.g., the first receiving carrier, the second receiving carrier, or both) may be selected at the UE (e.g., randomly and with equal probability) or such as indicated to the UE from the network. Additionally or alternatively, preamble information (e.g., RACH preamble information, PRACH information) may be used at the UE to determine one or more carriers (e.g., distinguish which carriers) that the UE can access and use to receive (e.g., expect to receive, monitor) a response message (e.g., a message sent to the UE in response to a PRACH message such as RACH Msg2 or RACH MsgB).

[0133] Additionally or alternatively, the UE may be configured to receive some messages using both the first receiving carrier and the second receiving carrier. For example, the receiving behavior of the second receiving carrier (e.g., a relatively low frequency carrier) may exclude SSB and SIB reception and downlink reference signal reception. In such an example, the UE may detect (e.g., read) SSB or SIB (or both) using the first receiving carrier (e.g., a relatively high frequency carrier) and identify the first receiving carrier as a downlink reference (e.g., a downlink reference may be set, and the first receiving carrier may be identified as a carrier for receiving a downlink reference signal). The UE may use either or both of the carriers (e.g., the first receiving carrier, the second receiving carrier, or both) to perform the remaining reception (e.g., the remaining). In some examples, such carriers (e.g., the first receiving carrier, the second receiving carrier, or both) may be selected at the UE (e.g., randomly and with equal probability) or indicated to the UE (e.g., from the network). Additionally or alternatively, preamble information (e.g., RACH preamble information, PRACH information) may be used at the UE to determine one or more carriers (e.g., to distinguish which carriers) that the UE can access and use to receive (e.g., expect to receive, monitor) a response message (e.g., a message sent to the UE in response to a PRACH message such as RACH Msg2 or RACH MsgB).

[0134] Additionally or alternatively, the network may configure the UE (or the UE may be otherwise configured) to receive messages using a second reception carrier and to send messages using a transmission carrier (e.g., the same carrier may be used for transmission and reception). That is, reception behaviors (e.g., all reception behaviors) may be enabled for a second reception carrier (e.g., a relatively lower frequency carrier). In such an example, the UE may perform a RACH message (e.g., until RACH Msg2 or RACH MsgB) using a second reception carrier (e.g., a relatively lower frequency carrier), and may perform UE-specific scheduling (e.g., reception of RACH Msg4, reception of messages after RACH Msg4) using the second reception carrier or the first reception carrier (e.g., a relatively higher frequency carrier), or both.

[0135] Additionally or alternatively, the network may configure the UE (or the UE may be otherwise configured) to receive the SSB and SIB using a first reception carrier (e.g., a relatively higher frequency carrier), and may enable reception of other messages (e.g., remaining messages) for a second reception carrier (e.g., a relatively higher frequency carrier). In such an example, the UE may perform RACH messages (e.g., until RACH Msg2 or RACH MsgB) using the second reception carrier (e.g., a relatively lower frequency carrier), and may perform UE-specific scheduling (e.g., reception of RACH Msg4, reception of messages after RACH Msg4) using the second reception carrier or the first reception carrier (e.g., a relatively higher frequency carrier), or both.

[0136] Additionally or alternatively, the network may configure the UE (or the UE may be otherwise configured) to receive SSBs, SIBs, and downlink reference signals using a first reception carrier (e.g., a relatively higher frequency carrier), and may enable reception of other messages (e.g., remaining messages) for a second reception carrier (e.g., a relatively higher frequency carrier). In such an example, the UE may perform RACH messages (e.g., until RACH Msg2 or RACH MsgB) using a second reception carrier (e.g., a relatively lower frequency carrier), and may perform UE-specific scheduling (e.g., reception of RACH Msg4, reception of messages after RACH Msg4) using the second reception carrier or the first reception carrier (e.g., a relatively higher frequency carrier), or both.

[0137] In some examples, a relatively high frequency carrier may be configured at the UE for transmission. In such examples, PRACH or RACH MsgA transmission may be enabled for two carriers (e.g., a relatively high frequency carrier and a relatively low frequency carrier). In such examples, the UE may determine to use a relatively high frequency carrier or a relatively low frequency carrier (e.g., select either transmission carrier, such as randomly with equal probability) for transmission. In some examples, the UE may use (e.g., obtain) an identifier in a random access radio network temporary identifier (RA-RNTI) calculation so that the network (e.g., gNB) may multiplex a response message (e.g., one or more random access responses (RARs)) to a random access preamble (e.g., included in a PRACH or RACH Msg4 transmission) transmitted on multiple (e.g., different carriers, relatively high frequency carriers, and relatively low frequency carriers) in one MAC protocol data unit (PDU). For such an identifier, the UE may receive (e.g., the network may introduce) a carrier indicator. That is, the network may send a carrier indicator to the UE to identify the identifier in the RA-RNTI calculation. Additionally or alternatively, one or more random access preamble resources (e.g., resources assigned to the UE for sending random access preambles, such as in a PRACH message or RACHMsgA) may be coordinated across carriers. In some examples, coordinating random access preamble resources across carriers may distinguish RARs (e.g., identifying which carrier is to be used to receive a particular RAR). In some examples, such coordination information (e.g., association information) may be indicated (e.g., signaled) from the network to the UE. In such examples, for power control, the UE may apply respective offsets to relatively higher frequency carriers and relatively lower frequency carriers used for random access preamble transmission.

[0138] Additionally or alternatively, in some examples, both a relatively low frequency carrier and a relatively high frequency carrier may be used for transmission and reception. For example, a UE may use both a relatively low frequency carrier and a relatively high frequency carrier to transmit a PRACH message (or RACH MsgA) and receive SSBs, SIBs, downlink reference signals, and RACH Msg2 (or RACH MsgB). In some examples, such a combination (e.g., using a relatively low frequency carrier and a relatively high frequency carrier for transmission and reception) may be used at the UE for increased traffic conditions (e.g., relatively heavy transmission and relatively heavy reception).

[0139] In some examples of increased traffic conditions, such as in examples where transmission may be relatively heavy, the UE may maintain one or more timing advance values ​​for multiple carriers. For example, the UE may use a common timing advance value for a relatively low frequency carrier and a relatively high frequency carrier. Additionally or alternatively, the UE may use multiple (e.g., different) timing advance values ​​for a relatively low frequency carrier and a relatively high frequency carrier. In some examples, if the frequency difference between the carriers is relatively large (e.g., if the carriers are separated by a relatively large number of frequencies in the frequency domain), the UE may avoid using a common timing value. For example, if the frequency difference between the carriers is relatively large, the UE may determine to use multiple (e.g., different) timing advance values ​​for multiple carriers. In such an example, the UE may maintain (e.g., store) multiple timing advance groups (TAGs), each timing advance group may be associated with a corresponding timing advance value and a timing advance timer, and may establish timing advance values ​​for carriers (e.g., establish timing advance values ​​for carriers separately, such as via a random access process). In some examples, the UE may receive an indication (e.g., such as signaling from the network) as to whether a single (e.g., common) timing advance value or multiple timing advance values ​​(e.g., for multiple carriers) are to be applied at the network and corresponding (e.g., related) configurations (e.g., corresponding TAG identifiers and timing advance timer values).

[0140] In some examples, the UE may use one or both of these carriers to perform measurements (e.g., reference signal measurements). For example, L3-level and L1-level (or beam-level) measurements may be supported at the UE using SSB or CSI-RS (or both). In some examples, two carriers of a paired operating band (e.g., a relatively high frequency carrier and a relatively low frequency carrier) may support reception of SSB or CSI-RS (or both). In such examples, the UE and the network (e.g., gNB) may determine (e.g., communicate) which carrier the UE may use to perform measurements (e.g., L3-level measurements, L1-level measurements). In some examples, the UE may be configured (e.g., via the network or otherwise) to use a relatively low frequency carrier, a relatively high frequency carrier, a carrier with a relatively lowest index, a carrier with a relatively highest index, a default carrier configured for reception at the UE, or any combination thereof. For example, the UE may receive an indication (e.g., signaling) that may identify one or more carriers (e.g., which carrier) the UE may use to perform reference signal measurements. In some examples, the UE may report (e.g., indicate to the network) information about one or more carriers (e.g., which carrier) used for measurement at the UE and corresponding measurement results for the network (e.g., gNB).

[0141] Additionally or alternatively, the UE may report one or more measurement capabilities (e.g., L1 capabilities, L2 capabilities) to the network. For example, the UE may report a transmit-receive ratio (e.g., and more than one mode associated with the transmit-receive ratio). Additionally or alternatively, the UE may report duplex capabilities (e.g., full-duplex capabilities, half-duplex capabilities). In some examples, a throughput calculation (e.g., performed at the UE or a network entity) may be performed based on the reported (e.g., supported) transmit-receive ratio (or according to one or more other calculation methods). Additionally or alternatively, the UE may report the timing capabilities of the UE (e.g., processing capabilities, switching time capabilities between transmit and receive) to the network. In some examples, the UE may report the UE's ability to calculate the L2 buffer size using the throughput calculation.

[0142] Figure 6 An example of a process flow 600 for supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is illustrated. In some examples, the process flow 600 can implement aspects of the wireless communication system 100, the wireless communication system 200, the carrier configuration map 300, and the resource allocation map 400. For example, the process flow 600 can be implemented at the UE 615 and the network entity 605, which can be as described in reference Figures 1 to 3 , Figure 4A , Figure 4B , Figure 5A , Figure 5B , Figure 5C , Figure 5D and Figure 5E Examples of corresponding devices described.

[0143] In some examples, UE 615 and network entity 605 can use paired operating bands to support TDD and FDD. For example, at 620, UE 615 can receive control signaling (e.g., from network entity 605) that includes a carrier indication for a configuration for wireless communication with a wireless device (e.g., network entity 605) using a first operating band (e.g., paired operating band) of a radio spectrum band (e.g., FR1, FR2). The carrier indication can be as described in reference Figure 2 An example of a carrier indication described herein. For example, the carrier indication may identify that the first operating frequency band includes a first carrier that is paired with a second carrier. The first carrier may be separated in frequency from the second carrier and used for one of transmitting from the UE 615 or receiving at the UE 615, while the second carrier may be used for both transmitting from the UE 615 and receiving at the UE 615. The UE 615 may use the second carrier for both transmission and reception using TDD according to the configuration.

[0144] In some examples, UE 615 may communicate messages concurrently with network entity 605 using the first carrier and the second carrier. For example, at 625 and 630, respectively, UE 115 may send multiple messages concurrently to network entity 605 using the first carrier and the second carrier.

[0145] Figure 7 A block diagram 700 of a device 705 supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. The device 705 may be an example of aspects of a UE 115 as described herein. The device 705 may include a receiver 710, a transmitter 715, and a communication manager 720. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0146] Receiver 710 may provide means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to a flexible channel structure for paired radio spectrum bands). The information may be communicated to other components of device 705. Receiver 710 may utilize a single antenna or a set of multiple antennas.

[0147] The transmitter 715 may provide means for transmitting signals generated by other components of the device 705. For example, the transmitter 715 may transmit information associated with various information channels (e.g., control channels, data channels, information channels associated with a flexible channel structure for paired radio spectrum bands), such as packets, user data, control information, or any combination thereof. In some examples, the transmitter 715 may be co-located with the receiver 710 in a transceiver module. The transmitter 715 may utilize a single antenna or a set of multiple antennas.

[0148] The communication manager 720, the receiver 710, the transmitter 715, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of the flexible channel structure for paired radio spectrum bands as described herein. For example, the communication manager 720, the receiver 710, the transmitter 715, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0149] In some examples, the communication manager 720, the receiver 710, the transmitter 715, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). 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, the 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).

[0150] Additionally or alternatively, in some examples, the communication manager 720, the receiver 710, the transmitter 715, 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 720, the receiver 710, the transmitter 715, 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 functions 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.

[0151] In some examples, the communication manager 720 can be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with the receiver 710, the transmitter 715, or both. For example, the communication manager 720 can receive information from the receiver 710, convey information to the transmitter 715, or integrate with the receiver 710, the transmitter 715, or both to obtain information, output information, or perform various other operations as described herein.

[0152] According to examples as disclosed herein, the communication manager 720 may support wireless communications at a UE (e.g., device 705). For example, the communication manager 720 may be configured to or otherwise support components for receiving control signaling, the control instruction including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using time division duplexing according to the configuration. The communication manager 720 may be configured to or otherwise support components for concurrently communicating multiple messages with the wireless device using the first carrier and the second carrier.

[0153] By including or configuring a communication manager 720 according to examples as described herein, a device 705 (e.g., a processor controlling a receiver 710, a transmitter 715, a communication manager 720, or a combination thereof or otherwise coupled thereto) may support techniques for more efficiently utilizing communication resources.

[0154] Figure 8 A block diagram 800 of a device 805 supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. The device 805 may be an example of aspects of the device 705 or UE 115 as described herein. The device 805 may include a receiver 810, a transmitter 815, and a communication manager 820. The device 805 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0155] The receiver 810 may provide means for receiving information (such as packets, user data, control information, or any combination thereof) associated with various information channels (e.g., control channels, data channels, information channels related to a flexible channel structure for paired radio spectrum bands). The information may be communicated to other components of the device 805. The receiver 810 may utilize a single antenna or a set of multiple antennas.

[0156] The transmitter 815 may provide means for transmitting signals generated by other components of the device 805. For example, the transmitter 815 may transmit information associated with various information channels (e.g., control channels, data channels, information channels associated with a flexible channel structure for paired radio spectrum bands), such as packets, user data, control information, or any combination thereof. In some examples, the transmitter 815 may be co-located with the receiver 810 in a transceiver module. The transmitter 815 may utilize a single antenna or a set of multiple antennas.

[0157] The device 805 or its various components may be examples of components for performing various aspects of a flexible channel structure for paired radio spectrum bands as described herein. For example, the communication manager 820 may include a carrier indication component 825, a message component 830, or any combination thereof. The communication manager 820 may be an example of various aspects of the communication manager 720 as described herein. In some examples, the communication manager 820 or its various components may 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 may receive information from the receiver 810, convey information to the transmitter 815, or be integrated in combination with the receiver 810, the transmitter 815, or both to obtain information, output information, or perform various other operations as described herein.

[0158] According to examples as disclosed herein, the communication manager 820 may support wireless communications at a UE (e.g., device 805). The carrier indication component 825 may be configured to or otherwise support components for receiving control signaling, the control instruction including an indication of a configuration for wireless communications with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using time division duplexing according to the configuration. The message component 830 may be configured to or otherwise support components for concurrently communicating multiple messages with the wireless device using the first carrier and the second carrier.

[0159] Fig. 9 A block diagram 900 of a communication manager 920 supporting a flexible channel structure for paired radio spectrum bands is shown in accordance with one or more aspects of the present disclosure. The communication manager 920 may be an example of aspects of the communication manager 720, the communication manager 820, or both as described herein. The communication manager 920 or its various components may be examples of components for performing various aspects of the flexible channel structure for paired radio spectrum bands as described herein. For example, the communication manager 920 may include a carrier indication component 925, a message component 930, a switching indication component 935, a mapping component 940, a scheduling indication component 945, a HARQ process indication component 950, a RACH indication component 955, a measurement indication component 960, a capability component 965, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0160] According to examples as disclosed herein, the communication manager 920 may support wireless communications at a UE. The carrier indication component 925 may be configured to or otherwise support components for receiving control signaling, the control instruction including an indication of a configuration for wireless communications with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using time division duplexing according to the configuration. The message component 930 may be configured to or otherwise support components for concurrently communicating multiple messages with the wireless device using the first carrier and the second carrier.

[0161] In some examples, to support receiving the control signaling including the indication, the carrier indication component 925 may be configured as or otherwise support components for receiving a first indication of a first carrier paired with a second carrier in the first operating frequency band and a second indication of the second carrier that is not paired with the second carrier, wherein the second carrier is used for both sending from the UE and receiving at the UE based at least in part on the first indication and the second indication.

[0162] In some examples, to support receiving the control signaling, the carrier indication component 925 may be configured to or otherwise support means for receiving a second indication that the first carrier is to be used for frequency division duplex or supplemental downlink at the UE and the second carrier is to be used for time division duplex at the UE, wherein the first carrier is used for transmitting from the UE or receiving at the UE, and the second carrier is used for transmitting from the UE and receiving at the UE based at least in part on the second indication.

[0163] In some examples, the switching indication component 935 may be configured as or otherwise support a component for receiving a second control signaling that includes a second indication for the UE to switch from one of transmitting from the UE or receiving at the UE using the first carrier in a first set of time intervals to a different one of transmitting from the UE or receiving at the UE using the second carrier in a second set of time intervals.

[0164] In some examples, the second indication includes an indication for the UE to switch from using a first bandwidth portion corresponding to one of transmitting from the UE or receiving at the UE using the first carrier to using a second bandwidth portion corresponding to a different one of transmitting from the UE or receiving at the UE using the second carrier.

[0165] In some examples, mapping component 940 may be configured to or otherwise support components for receiving second control signaling that identifies a mapping between a channel and two or more of a downlink, an uplink, or a sidelink, wherein the channel comprises a quality of service flow, a radio frequency bearer, a radio link control channel or bearer, a logical channel, wherein communicating the multiple messages is based at least in part on the mapping.

[0166] In some examples, the scheduling indication component 945 may be configured to or otherwise support components for receiving second control signaling that includes a second indication that schedules a first message to be communicated using first one or more resources from a resource pool and a second message to be communicated using second one or more resources from the resource pool, wherein the first one or more resources are associated with the first carrier and the second one or more resources are associated with the second carrier, and wherein communicating the multiple messages is based at least in part on the second indication.

[0167] In some examples, the scheduling indication component 945 may be configured to or otherwise support components for receiving first scheduling information for a first message in the plurality of messages to be communicated using the first carrier and second scheduling information for a second message in the plurality of messages to be communicated using the second carrier, the first carrier and the second carrier being separately scheduled.

[0168] In some examples, the HARQ process indication component 950 may be configured as or otherwise support components for receiving second control signaling that includes a second indication of a first number of hybrid automatic repeat request processes associated with the first carrier and a second number of hybrid automatic repeat request processes associated with the second carrier.

[0169] In some examples, the first carrier and the second carrier are used at least for transmission from the UE, and the carrier indication component 925 may be configured to or otherwise support a component for receiving second control signaling, the second control signaling including a second indication for the UE to use the first carrier, the second carrier, or both to send feedback associated with communicating the multiple messages.

[0170] In some examples, the RACH indication component 955 may be configured to or otherwise support components for receiving second control signaling that includes a second indication that identifies at least one type of signal to be sent from the UE or received at the UE using the first carrier during a random access procedure and at least one corresponding type of signal to be sent from the UE and received at the UE using the second carrier during the random access procedure.

[0171] In some examples, the second control signaling also includes a third indication of a first timing advance value to be used at the UE for the first carrier and a second timing advance value to be used at the UE for the second carrier.

[0172] In some examples, the measurement indication component 960 may be configured to or otherwise support components for receiving second control signaling that includes a second indication for the UE to perform receive power measurements for a channel state information report using the first carrier, the second carrier, or both.

[0173] In some examples, capability component 965 may be configured as or otherwise support components for sending second control signaling that includes a second indication of at least one capability of the UE, the at least one capability including a ratio between capacity for sending from the UE and capacity for receiving at the UE, the UE's ability to perform full-duplex communications, the UE's ability to perform half-duplex communications, processing time supported at the UE, buffer sizes supported at the UE, or any combination thereof.

[0174] Fig.10 A diagram of a system 1000 including a device 1005 supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. The device 1005 may be an example of a device 705, a device 805, or a UE 115 as described herein, or include components thereof. The device 1005 may communicate (e.g., wirelessly) with one or more network entities 105, one or more UEs 115, or any combination thereof. The device 1005 may include components for two-way voice and data communications, including components for sending and receiving communications, such as a communication manager 1020, an input / output (I / O) controller 1010, a transceiver 1015, an antenna 1025, a memory 1030, a code 1035, and a processor 1040. 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 1045).

[0175] I / O controller 1010 can manage input and output signals for device 1005. I / O controller 1010 can also manage peripheral devices that are not integrated into device 1005. In some cases, I / O controller 1010 can represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1010 can utilize an operating system, such as or another known operating system. Additionally or alternatively, I / O controller 1010 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some cases, I / O controller 1010 may be implemented as part of a processor (such as processor 1040). In some cases, a user may interact with device 1005 via I / O controller 1010 or via hardware components controlled by I / O controller 1010.

[0176] In some cases, the device 1005 may include a single antenna 1025. However, in some other cases, the device 1005 may have more than one antenna 1025, which may be capable of concurrently transmitting or receiving multiple wireless transmissions. The transceiver 1015 may communicate bidirectionally via one or more antennas 1025, a wired or wireless link, as described herein. For example, the transceiver 1015 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1015 may also include a modem for: modulating packets; providing the modulated packets to one or more antennas 1025 for transmission; and demodulating packets received from one or more antennas 1025. The transceiver 1015 or the transceiver 1015 and one or more antennas 1025 may be examples of transmitters 715, transmitters 815, receivers 710, receivers 810, or any combination thereof or components thereof as described herein.

[0177] Memory 1030 may include random access memory (RAM) and read-only memory (ROM). Memory 1030 may store computer-readable, computer-executable code 1035 including instructions that, when executed by processor 1040, cause device 1005 to perform various functions described herein. Code 1035 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1035 may not be directly executable by processor 1040, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, memory 1030 may also contain, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0178] Processor 1040 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, processor 1040 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into processor 1040. Processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1030) to cause device 1005 to perform various functions (e.g., functions or tasks that support a flexible channel structure for paired radio spectrum bands). For example, device 1005 or a component of device 1005 may include processor 1040 and memory 1030 coupled to or coupled to processor 1040, and processor 1040 and memory 1030 are configured to perform the various functions described herein.

[0179] According to examples as disclosed herein, the communication manager 1020 may support wireless communications at a UE (e.g., device 1005). For example, the communication manager 1020 may be configured to or otherwise support components for receiving control signaling, the control instruction including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using time division duplexing according to the configuration. The communication manager 1020 may be configured to or otherwise support components for concurrently communicating multiple messages with the wireless device using the first carrier and the second carrier.

[0180] By including or configuring a communications manager 1020 according to examples as described herein, the device 1005 can support techniques for communications reliability, reduced latency, an improved user experience associated with reduced processing, and more efficient utilization of communications resources.

[0181] In some examples, the communication manager 1020 may be configured to perform various operations (e.g., receive, monitor, transmit) using or otherwise cooperating with the transceiver 1015, one or more antennas 1025, or any combination thereof. Although the communication manager 1020 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1020 may be supported or performed by the processor 1040, the memory 1030, the code 1035, or any combination thereof. For example, the code 1035 may include instructions that are executable by the processor 1040 to cause the device 1005 to perform various aspects of the flexible channel structure for paired radio spectrum bands as described herein, or the processor 1040 and the memory 1030 may be otherwise configured to perform or support such operations.

[0182] Fig.11 A block diagram 1100 of a device 1105 supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the network entity 105 as described herein. The device 1105 may include a receiver 1110, a transmitter 1115, and a communication manager 1120. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0183] The receiver 1110 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 communicated to other components of the device 1105. In some examples, the receiver 1110 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 1110 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0184] The transmitter 1115 may provide means for outputting (e.g., transmitting, providing, conveying, transmitting) information generated by other components of the device 1105. For example, the transmitter 1115 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 1115 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1115 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 1115 and the receiver 1110 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0185] The communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of the flexible channel structure for paired radio spectrum bands as described herein. For example, the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0186] In some examples, the communication manager 1120, the receiver 1110, the transmitter 1115, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuit). The hardware may 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 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).

[0187] Additionally or alternatively, in some examples, the communication manager 1120, the receiver 1110, the transmitter 1115, 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 1120, the receiver 1110, the transmitter 1115, 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 functions 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.

[0188] In some examples, communication manager 1120 may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 1110, transmitter 1115, or both. For example, communication manager 1120 may receive information from receiver 1110, convey information to transmitter 1115, or integrate in conjunction with receiver 1110, transmitter 1115, or both to obtain information, output information, or perform various other operations as described herein.

[0189] According to examples as disclosed herein, the communication manager 1120 may support wireless communications at a network entity, such as the device 1105. For example, the communication manager 1120 may be configured to or otherwise support components for sending control signaling, the control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using time division duplexing according to the configuration. The communication manager 1120 may be configured to or otherwise support components for concurrently communicating a plurality of messages with the wireless device using the first carrier and the second carrier.

[0190] By including or configuring a communication manager 1120 according to examples as described herein, a device 1105 (e.g., a processor controlling a receiver 1110, a transmitter 1115, a communication manager 1120, or a combination thereof or otherwise coupled thereto) may support techniques for more efficiently utilizing communication resources.

[0191] Fig.12 A block diagram 1200 of a device 1205 supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. The device 1205 may be an example of aspects of the device 1105 or network entity 105 as described herein. The device 1205 may include a receiver 1210, a transmitter 1215, and a communication manager 1220. The device 1205 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0192] The receiver 1210 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 passed to other components of the device 1205. In some examples, the receiver 1210 may support obtaining information by receiving signals via one or more antennas. Additionally or alternatively, the receiver 1210 may support obtaining information by receiving signals via one or more wired (e.g., electrical, optical) interfaces, wireless interfaces, or any combination thereof.

[0193] The transmitter 1215 may provide means for outputting (e.g., sending, providing, conveying, transmitting) information generated by other components of the device 1205. For example, the transmitter 1215 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 1215 may support outputting information by sending signals via one or more antennas. Additionally or alternatively, the transmitter 1215 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 1215 and the receiver 1210 may be co-located in a transceiver, which may include a modem or be coupled to a modem.

[0194] Device 1205 or its various components may be examples of components for performing various aspects of a flexible channel structure for paired radio spectrum bands as described herein. For example, communication manager 1220 may include operating band indication component 1225, carrier component 1230, or any combination thereof. Communication manager 1220 may be an example of various aspects of communication manager 1120 as described herein. In some examples, communication manager 1220 or its various components may be configured to perform various operations (e.g., receive, obtain, monitor, output, send) using or otherwise cooperating with receiver 1210, transmitter 1215, or both. For example, communication manager 1220 may receive information from receiver 1210, convey information to transmitter 1215, or be integrated in combination with receiver 1210, transmitter 1215, or both to obtain information, output information, or perform various other operations as described herein.

[0195] According to examples as disclosed herein, the communication manager 1220 may support wireless communications at a network entity (e.g., device 1205). The operating band indication component 1225 may be configured to or otherwise support means for sending control signaling, the control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using time division duplexing according to the configuration. The carrier component 1230 may be configured to or otherwise support means for concurrently communicating a plurality of messages with the wireless device using the first carrier and the second carrier.

[0196] Fig.13 A block diagram 1300 of a communication manager 1320 supporting a flexible channel structure for paired radio spectrum bands is shown in accordance with one or more aspects of the present disclosure. The communication manager 1320 may be an example of aspects of the communication manager 1120, the communication manager 1220, or both as described herein. The communication manager 1320 or its various components may be examples of components for performing various aspects of the flexible channel structure for paired radio spectrum bands as described herein. For example, the communication manager 1320 may include an operating band indication component 1325, a carrier component 1330, a switching component 1335, a transmission channel indication component 1340, a mapping indication component 1345, a scheduling component 1350, a HARQ indication component 1355, a feedback component 1360, a measurement component 1365, a UE capability component 1370, or any combination thereof. Each of these components may communicate directly or indirectly with each other (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 the 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.

[0197] According to examples as disclosed herein, the communication manager 1320 may support wireless communications at a network entity. The operating band indication component 1325 may be configured to or otherwise support components for sending control signaling, the control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using time division duplexing according to the configuration. The carrier component 1330 may be configured to or otherwise support components for concurrently communicating multiple messages with the wireless device using the first carrier and the second carrier.

[0198] In some examples, to support sending the control signaling, the operating band indication component 1325 may be configured to or otherwise support components for sending a first indication of a first carrier that is paired with a second carrier in the first operating band and a second indication identifying that the second carrier is not paired with the second carrier, wherein the second carrier is used for both sending from the wireless device and receiving at the wireless device based at least in part on the first indication and the second indication.

[0199] In some examples, to support sending the control signaling, the operating band indication component 1325 may be configured to or otherwise support components for sending a second indication that the first carrier will be used for frequency division duplex or supplemental downlink at the wireless device and the second carrier will be used for time division duplex at the wireless device, wherein the first carrier is used to send from the wireless device or receive at the wireless device, and the second carrier is used to send from the wireless device and receive at the wireless device based at least in part on the second indication.

[0200] In some examples, switching component 1335 may be configured as or otherwise support components for sending second control signaling that includes a second indication for the wireless device to switch from one of transmitting from the wireless device or receiving at the wireless device using the first carrier during a first set of time intervals to a different one of transmitting from the wireless device or receiving at the wireless device using the second carrier during a second set of time intervals.

[0201] In some examples, the transmission channel indication component 1340 may be configured to or otherwise support components for sending second control signaling, the second control signaling including a second indication identifying at least one respective transmission channel for the first carrier and the second carrier, wherein communicating the multiple messages is based at least in part on the second indication.

[0202] In some examples, the second indication includes an indication for the wireless device to switch from using a first BWP corresponding to one of transmitting from the wireless device or receiving at the wireless device using the first carrier to using a second BWP corresponding to a different one of transmitting from the wireless device or receiving at the wireless device using the second carrier.

[0203] In some examples, mapping indication component 1345 may be configured as or otherwise support means for sending a second control signaling identifying a mapping between a channel and two or more of a downlink, an uplink, or a sidelink, wherein the channel comprises a quality of service flow, a radio frequency bearer, a radio link control channel or bearer, a logical channel, wherein conveying the multiple messages is based at least in part on the mapping.

[0204] In some examples, scheduling component 1350 may be configured to or otherwise support components for sending second control signaling that includes a second indication that schedules a first message to be communicated using first one or more resources from a resource pool and a second message to be communicated using second one or more resources from the resource pool, wherein the first one or more resources are associated with the first carrier and the second one or more resources are associated with the second carrier, and wherein communicating the multiple messages is based at least in part on the second indication.

[0205] In some examples, scheduling component 1350 may be configured to or otherwise support means for sending first scheduling information for a first message in the plurality of messages to be communicated using the first carrier and second scheduling information for a second message in the plurality of messages to be communicated using the second carrier, the first carrier and the second carrier being separately scheduled.

[0206] In some examples, the HARQ indication component 1355 may be configured as or otherwise support components for sending second control signaling that includes a second indication of a first number of hybrid automatic repeat request processes associated with the first carrier and a second number of hybrid automatic repeat request processes associated with the second carrier.

[0207] In some examples, the first carrier and the second carrier are used to transmit at least from the wireless device, and the feedback component 1360 can be configured to or otherwise support components for transmitting second control signaling, the second control signaling including a second indication for the wireless device to use the first carrier, the second carrier, or both to transmit feedback associated with communicating the plurality of messages.

[0208] In some examples, the second control signaling also includes a third indication of a first timing advance value to be used at the wireless device for the first carrier and a second timing advance value to be used at the wireless device for the second carrier.

[0209] In some examples, measurement component 1365 may be configured to or otherwise support components for sending second control signaling that includes a second indication for the wireless device to perform receive power measurements for a channel state information report using the first carrier, the second carrier, or both.

[0210] In some examples, the wireless device includes a UE, and the UE capabilities component 1370 may be configured as or otherwise support components for receiving a second control signaling that includes a second indication of at least one capability of the UE, the at least one capability including a ratio between a capacity for sending from the UE and a capacity for receiving at the UE, an ability of the UE to perform full-duplex communication, an ability of the UE to perform half-duplex communication, a processing time supported at the UE, a buffer size supported at the UE, or any combination thereof.

[0211] Fig.14 A diagram of a system 1400 including a device 1405 supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. The device 1405 may be an example of a device 1105, a device 1205, or a network entity 105 as described herein, or include components thereof. The device 1405 may communicate with one or more network entities 105, one or more UEs 115, or any combination thereof, which communication may include communication through one or more wired interfaces, through one or more wireless interfaces, or any combination thereof. The device 1405 may include components that support output and acquisition of communications, such as a communication manager 1420, a transceiver 1410, an antenna 1415, a memory 1425, a code 1430, and a processor 1435. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more buses (e.g., bus 1440).

[0212] The transceiver 1410 may support bidirectional communication via a wired link, a wireless link, or both as described herein. In some examples, the transceiver 1410 may include a wired transceiver and may communicate bidirectionally with another wired transceiver. Additionally or alternatively, in some examples, the transceiver 1410 may include a wireless transceiver and may communicate bidirectionally with another wireless transceiver. In some examples, the device 1405 may include one or more antennas 1415, which may be capable of sending or receiving wireless transmissions (e.g., concurrently). The transceiver 1410 may also include a modem for modulating a signal, providing the modulated signal for transmission (e.g., through one or more antennas 1415, through a wired transmitter), receiving a modulated signal (e.g., from one or more antennas 1415, from a wired receiver), and demodulating a signal. In some implementations, the transceiver 1410 may include one or more interfaces, such as one or more interfaces coupled to one or more antennas 1415 configured to support various receiving or obtaining operations, or one or more interfaces coupled to one or more antennas 1415 configured to support various sending or outputting operations, or a combination thereof. In some implementations, the transceiver 1410 may include or be configured to be coupled to one or more processors or memory components that 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 1410, or the transceiver 1410 and one or more antennas 1415, or the transceiver 1410 and one or more antennas 1415 and one or more processors or memory components (e.g., processor 1435, or memory 1425, or both) may be included in a chip or chip assembly installed in the device 1405. The transceiver 1410 or transceiver 1410 and one or more antennas 1415 or wired interfaces (where applicable) may be examples of transmitter 1115, transmitter 1215, receiver 1110, receiver 1210, or any combination thereof or components thereof as described herein. In some examples, the transceiver may be operable to support communication via one or more communication links (e.g., communication link 125, backhaul communication link 120, midhaul communication link 162, fronthaul communication link 168).

[0213] Memory 1425 may include RAM and ROM. Memory 1425 may store computer-readable, computer-executable code 1430 including instructions that, when executed by processor 1435, cause device 1405 to perform various functions described herein. Code 1430 may be stored in a non-transitory computer-readable medium such as system memory or another type of memory. In some cases, code 1430 may not be directly executable by processor 1435, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein. In some cases, memory 1425 may also include, among other things, a BIOS that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0214] Processor 1435 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, processor 1435 may be configured to operate a memory array using a memory controller. In some other cases, the memory controller may be integrated into processor 1435. Processor 1435 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1425) to cause device 1405 to perform various functions (e.g., functions or tasks that support a flexible channel structure for paired radio spectrum bands). For example, device 1405 or a component of device 1405 may include processor 1435 and memory 1425 coupled to processor 1435, the processor 1435 and memory 1425 being configured to perform the various functions described herein. Processor 1435 may be an example of a cloud computing platform (e.g., one or more physical nodes and supporting software such as an operating system, virtual machine, or container instance) that may host functionality for performing the functionality of device 1405 (e.g., by executing code 1430). Processor 1435 may be any one or more suitable processors capable of executing scripts or instructions of one or more software programs stored in device 1405 (such as within memory 1425). In some implementations, processor 1435 may be a component of a processing system. A processing system may generally refer to a system or series of machines or components that receives inputs and processes those inputs to produce a set of outputs (which may be delivered to other systems or components of, for example, device 1405). For example, a processing system of device 1405 may refer to a system that includes various other components or subcomponents of device 1405, such as processor 1435, or transceiver 1410, or communication manager 1420, or other components or combinations of components of device 1405. The processing system of device 1405 may interface with other components of device 1405 and may process information (such as inputs or signals) received from other components or output information to other components. For example, device 1405 may be a processor or a communication manager. The chip or modem of 1405 may include a processing system and an interface for outputting information or for obtaining information or both. The interface may be implemented as or otherwise include a first interface configured to output information and a second interface configured to obtain information. In some implementations, the first interface may refer to an interface between the processing system of the chip or modem and a transmitter, so that the device 1405 can send information output from the chip or modem. In some implementations, the second interface may refer to an interface between the processing system of the chip or modem and a receiver, so that the device 1405 can obtain information or signal input, and the information can be passed to the processing system.One of ordinary skill in the art will readily recognize that the first interface may also obtain information or signal input, and the second interface may also output information or signal output.

[0215] In some examples, bus 1440 may support communications of a protocol layer (e.g., within a protocol layer) of a protocol stack. In some examples, bus 1440 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 1405, or communications performed between different components of device 1405 that may be co-located or may be located in different locations (e.g., where device 1405 may refer to a system in which one or more of communication manager 1420, transceiver 1410, memory 1425, code 1430, and processor 1435 may be located in one of the different components or divided between the different components).

[0216] In some examples, communication manager 1420 may manage aspects of communications with core network 130 (e.g., via one or more wired or wireless backhaul links). For example, communication manager 1420 may manage delivery of data communications for client devices such as one or more UEs 115. In some examples, communication manager 1420 may manage communications with other network entities 105 and may include a controller or scheduler for controlling communications with UE 115 in coordination with other network entities 105. In some examples, communication manager 1420 may support an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between network entities 105.

[0217] According to examples as disclosed herein, the communication manager 1420 may support wireless communications at a network entity. For example, the communication manager 1420 may be configured to or otherwise support components for sending control signaling, the control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using time division duplexing according to the configuration. The communication manager 1420 may be configured to or otherwise support components for concurrently communicating multiple messages with the wireless device using the first carrier and the second carrier.

[0218] By including or configuring a communications manager 1420 according to examples as described herein, the device 1405 can support techniques for improving communications reliability, reducing latency, and more efficiently utilizing communications resources.

[0219] In some examples, the communication manager 1420 may be configured to perform various operations (e.g., receive, obtain, monitor, output, transmit) using or otherwise cooperating with the transceiver 1410, one or more antennas 1415 (e.g., where applicable), or any combination thereof. Although the communication manager 1420 is illustrated as a separate component, in some examples, one or more functions described with reference to the communication manager 1420 may be supported or performed by the processor 1435, the memory 1425, the code 1430, the transceiver 1410, or any combination thereof. For example, the code 1430 may include instructions that are executable by the processor 1435 to cause the device 1405 to perform various aspects of the flexible channel structure for paired radio spectrum bands as described herein, or the processor 1435 and the memory 1425 may be otherwise configured to perform or support such operations.

[0220] Fig.15 A flowchart illustrating a method 1500 for supporting a flexible channel structure for paired radio spectrum bands 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 herein. Figures 1 to 10 The UE 115 described herein performs. 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.

[0221] At 1505, the method may include: receiving control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using time division duplexing according to the configuration. 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 Fig. 9 The carrier indication component 925 described above is executed.

[0222] At 1510, the method may include: using the first carrier and the second carrier to concurrently communicate multiple messages with the wireless device. 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 Fig. 9 The described message component 930 is executed.

[0223] Fig.16A flowchart illustrating a method 1600 for supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE or a component thereof as described herein. For example, the operations of the method 1600 may be implemented by a UE or a component thereof as described in reference to Figures 1 to 10 The UE 115 described herein performs. 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.

[0224] At 1605, the method may include: receiving control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using time division duplexing according to the configuration. 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. 9 The carrier indication component 925 described above is executed.

[0225] At 1610, the method may include: receiving a first indication of the first carrier paired with the second carrier in the first operating frequency band and a second indication of the second carrier that is not paired with the second carrier, wherein the second carrier is used for both transmission from the UE and reception at the UE based at least in part on the first indication and the second indication. 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 Fig. 9 The carrier indication component 925 described above is executed.

[0226] At 1615, the method may include: using the first carrier and the second carrier to communicate multiple messages with the wireless device concurrently. The operations of 1615 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1615 may be performed as described in reference to Fig. 9 The described message component 930 is executed.

[0227] Fig.17 A flow chart illustrating a method 1700 for supporting a flexible channel structure for paired radio spectrum bands 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 6 as well as Figures 11 to 14The network entity described herein performs. 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.

[0228] At 1705, the method may include: sending control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using time division duplexing in accordance with the configuration. 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.13 The described operating bands instruct component 1325 to perform.

[0229] At 1710, the method may include: using the first carrier and the second carrier to concurrently communicate multiple messages with the wireless device. The operations of 1710 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1710 may be performed as described in reference to Fig.13 The carrier component 1330 described above is executed.

[0230] Fig.18 A flow chart illustrating a method 1800 for supporting a flexible channel structure for paired radio spectrum bands according to one or more aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a network entity or a component thereof as described herein. For example, the operations of the method 1800 may be implemented by a network entity or a component thereof as described herein. Figures 1 to 6 as well as Figures 11 to 14 The network entity described herein performs. 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.

[0231] At 1805, the method may include: sending control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier is used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using time division duplexing in accordance with the configuration. The operations of 1805 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1805 may be performed as described in reference to Fig.13 The described operating bands instruct component 1325 to perform.

[0232] At 1810, the method may include: sending a second control signaling including a second indication for the wireless device to switch from one of transmitting from the wireless device or receiving at the wireless device using a first carrier in a first set of time intervals to a different one of transmitting from the wireless device or receiving at the wireless device using a second carrier in a second set of time intervals. The operations of 1810 may be performed according to examples as disclosed herein. In some examples, aspects of the operations of 1810 may be performed as described in reference to Fig.13 The described switching component 1335 is executed.

[0233] At 1815, the method may include: using the first carrier and the second carrier to communicate multiple messages with the wireless device concurrently. The operations of 1815 may be performed according to examples disclosed herein. In some examples, aspects of the operations of 1815 may be performed as described in reference to Fig.13 The carrier component 1330 described above is executed.

[0234] The following provides an overview of various aspects of the disclosure:

[0235] Aspect 1: A method for wireless communication at a UE, comprising: receiving control signaling, the control signaling comprising an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band comprising a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated from the second carrier in frequency, the first carrier is used for one of sending from the UE or receiving at the UE, and wherein the second carrier is used for both sending from the UE and receiving at the UE using TDD according to the configuration; and communicating multiple messages concurrently with the wireless device using the first carrier and the second carrier.

[0236] Aspect 2: A method according to Aspect 1, wherein receiving the control signaling including the indication includes: receiving a first indication of the first carrier that is paired with the second carrier in the first operating frequency band and a second indication of the second carrier that is not paired with the second carrier, wherein the second carrier is used for both sending from the UE and receiving at the UE based at least in part on the first indication and the second indication.

[0237] Aspect 3: A method according to aspect 1, wherein receiving the control signaling includes: receiving a second indication that the first carrier will be used for FDD or supplementary downlink at the UE and the second carrier will be used for TDD at the UE, wherein the first carrier is used for sending from the UE or receiving at the UE, and the second carrier is used for sending from the UE and receiving at the UE based at least in part on the second indication.

[0238] Aspect 4: The method according to aspects 1 to 3 also includes: receiving a second control signaling, wherein the second control signaling includes a second indication for the UE to switch from one of sending from the UE or receiving at the UE using the first carrier within a first group of time intervals to a different one of sending from the UE or receiving at the UE using the second carrier within a second group of time intervals.

[0239] Aspect 5: A method according to Aspect 4, wherein the second indication includes an indication for the UE to switch from using a first BWP corresponding to the one of sending from the UE or receiving at the UE using the first carrier to using a second BWP corresponding to the different one of sending from the UE or receiving at the UE using the second carrier.

[0240] Aspect 6: The method according to any one of Aspects 1 to 5 further includes: receiving a second control signaling, wherein the second control signaling identifies a mapping between a channel and two or more of a downlink, an uplink or a sidelink, wherein the channel includes a QoS flow, a radio frequency bearer, an RLC channel or bearer, a logical channel, wherein the communication of the multiple messages is at least partially based on the mapping.

[0241] Aspect 7: The method according to any one of Aspects 1 to 6 further includes: receiving a second control signaling, the second control signaling including a second indication, the second indication scheduling a first message to be communicated using a first one or more resources from a resource pool and a second message to be communicated using a second one or more resources from the resource pool, wherein the first one or more resources are associated with the first carrier and the second one or more resources are associated with the second carrier, and wherein communicating the multiple messages is at least partially based on the second indication.

[0242] Aspect 8: The method according to any one of Aspects 1 to 6 further includes: receiving first scheduling information for a first message among the multiple messages to be conveyed using the first carrier and second scheduling information for a second message among the multiple messages to be conveyed using the second carrier, wherein the first carrier and the second carrier are scheduled separately.

[0243] Aspect 9: The method according to any one of Aspects 1 to 8 further includes: receiving second control signaling, the second control signaling including a second indication of a first number of HARQ processes associated with the first carrier and a second number of HARQ processes associated with the second carrier.

[0244] Aspect 10: A method according to any one of Aspects 1 to 9, wherein the first carrier and the second carrier are used at least for sending from the UE, and the method further includes: receiving second control signaling, the second control signaling including a second indication for the UE to use the first carrier, the second carrier, or both to send feedback associated with conveying the multiple messages.

[0245] Aspect 11: The method according to any one of Aspects 1 to 10 also includes: receiving a second control signaling, the second control signaling including a second indication, the second indication identifying at least one type of signal to be sent from the UE or received at the UE using the first carrier during a random access procedure and at least one corresponding type of signal to be sent from the UE and received at the UE using the second carrier during the random access procedure.

[0246] Aspect 12: The method according to aspect 11, wherein the second control signaling further includes a third indication of a first timing advance value to be used at the UE for the first carrier and a second timing advance value to be used at the UE for the second carrier.

[0247] Aspect 13: The method according to any one of Aspects 1 to 12 also includes: receiving second control signaling, the second control signaling including a second indication for the UE to use the first carrier, the second carrier, or both to perform receive power measurement for channel state information reporting.

[0248] Aspect 14: The method according to any one of Aspects 1 to 13 further includes: sending a second control signaling, wherein the second control signaling includes a second indication of at least one capability of the UE, the at least one capability including a ratio between a capacity for sending from the UE and a capacity for receiving at the UE, an ability of the UE to perform full-duplex communication, an ability of the UE to perform half-duplex communication, a processing time supported at the UE, a buffer size supported at the UE, or any combination thereof.

[0249] Aspect 15: A method for wireless communication at a network entity, comprising: sending control signaling, the control signaling including an indication of a configuration for wireless communication with a wireless device using a first operating band of a radio spectrum band, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated from the second carrier in frequency, the first carrier is used for one of sending from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both sending from the wireless device and receiving at the wireless device using TDD according to the configuration; and communicating multiple messages with the wireless device concurrently using the first carrier and the second carrier.

[0250] Aspect 16: A method according to Aspect 15, wherein sending the control signaling includes: sending a first indication of the first carrier that is paired with the second carrier in the first operating frequency band and a second indication of the second carrier that is not paired with the second carrier, wherein the second carrier is used for both sending from the wireless device and receiving at the wireless device based at least in part on the first indication and the second indication.

[0251] Aspect 17: A method according to Aspect 15, wherein sending the control signaling includes: sending a second indication that the first carrier will be used for FDD or supplemental downlink at the wireless device and the second carrier will be used for TDD at the wireless device, wherein the first carrier is used to send from the wireless device or receive at the wireless device, and the second carrier is used to send from the wireless device and receive at the wireless device based at least in part on the second indication.

[0252] Aspect 18: The method according to any one of Aspects 15 to 17 also includes: sending a second control signaling, wherein the second control signaling includes a second indication for the wireless device to switch from one of sending from the wireless device or receiving at the wireless device using the first carrier within a first set of time intervals to a different one of sending from the wireless device or receiving at the wireless device using the second carrier within a second set of time intervals.

[0253] Aspect 19: The method according to any one of Aspects 15 to 18 further includes: sending a second control signaling, the second control signaling including a second indication identifying at least one corresponding transmission channel for the first carrier and the second carrier, wherein conveying the multiple messages is at least partially based on the second indication.

[0254] Aspect 20: A method according to Aspect 19, wherein the second indication includes an indication for the wireless device to switch from using a first BWP corresponding to the one of sending from the wireless device or receiving at the wireless device using the first carrier to using a second BWP corresponding to the different one of sending from the wireless device or receiving at the wireless device using the second carrier.

[0255] Aspect 21: The method according to any one of Aspects 15 to 20 further includes: sending a second control signaling, wherein the second control signaling identifies a mapping between a channel and two or more of a downlink, an uplink or a sidelink, wherein the channel includes a QoS flow, a radio frequency bearer, an RLC channel or bearer, a logical channel, wherein the communication of the multiple messages is at least partially based on the mapping.

[0256] Aspect 22: The method according to any one of Aspects 15 to 21 further includes: sending a second control signaling, the second control signaling including a second indication, the second indication scheduling a first message to be communicated using a first one or more resources from a resource pool and a second message to be communicated using a second one or more resources from the resource pool, wherein the first one or more resources are associated with the first carrier and the second one or more resources are associated with the second carrier, and wherein communicating the multiple messages is at least partially based on the second indication.

[0257] Aspect 23: The method according to any one of Aspects 15 to 21 further includes: sending first scheduling information for a first message among the multiple messages to be conveyed using the first carrier and second scheduling information for a second message among the multiple messages to be conveyed using the second carrier, the first carrier and the second carrier being scheduled separately.

[0258] Aspect 24: The method according to any one of Aspects 15 to 23 further includes: sending second control signaling, wherein the second control signaling includes a second indication of a first number of HARQ processes associated with the first carrier and a second number of HARQ processes associated with the second carrier.

[0259] Aspect 25: A method according to any one of Aspects 15 to 24, wherein the first carrier and the second carrier are used at least for sending from the wireless device, and the method also includes: sending second control signaling, the second control signaling including a second indication for the wireless device to use the first carrier, the second carrier, or both to send feedback associated with conveying the multiple messages.

[0260] Aspect 26: The method according to aspect 25, wherein the second control signaling further includes a third indication of a first timing advance value to be used at the wireless device for the first carrier and a second timing advance value to be used at the wireless device for the second carrier.

[0261] Aspect 27: The method according to any one of Aspects 15 to 26 also includes: sending a second control signaling, wherein the second control signaling includes a second indication for the wireless device to use the first carrier, the second carrier, or both to perform a received power measurement for a channel state information report.

[0262] Aspect 28: A method according to any one of Aspects 15 to 27, wherein the wireless device includes a UE, and the method further includes: receiving a second control signaling, the second control signaling including a second indication of at least one capability of the UE, the at least one capability including a ratio between a capacity for sending from the UE and a capacity for receiving at the UE, an ability of the UE to perform full-duplex communication, an ability of the UE to perform half-duplex communication, a processing time supported at the UE, a buffer size supported at the UE, or any combination thereof.

[0263] Aspect 29: An apparatus for performing wireless communications at a UE, comprising: a processor; and a memory coupled to the processor, wherein the memory comprises instructions that can be executed by the processor to cause the apparatus to perform a method according to any one of Aspects 1 to 14.

[0264] Aspect 30: An apparatus for wireless communication at a UE, comprising at least one component for performing a method according to any one of aspects 1 to 14.

[0265] Aspect 31: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform a method according to any one of aspects 1 to 14.

[0266] Aspect 32: An apparatus for wireless communication at a network entity, comprising: a processor; and a memory coupled to the processor, wherein the memory comprises instructions executable by the processor to cause the apparatus to perform a method according to any one of Aspects 15 to 28.

[0267] Aspect 33: An apparatus for wireless communication at a network entity, comprising at least one component for performing a method according to any one of aspects 15 to 28.

[0268] Aspect 34: A non-transitory computer-readable medium storing code for wireless communication at a network entity, the code comprising instructions executable by a processor to perform the method according to any one of aspects 15 to 28.

[0269] 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.

[0270] 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.

[0271] The information and signals described herein may be represented using any of a variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips mentioned throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof.

[0272] 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, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration).

[0273] The functions described herein may be implemented using hardware, software executed by a processor, firmware, or any combination thereof. When implemented using software executed by a processor, the functions may 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 may be implemented using software executed by a processor, hardware, firmware, hard wiring, or a combination of any of these items. Features that implement the functions may also be physically located at different locations, including being distributed so that the various parts of the functions are implemented at different physical locations.

[0274] 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 as 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.

[0275] 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). Moreover, 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."

[0276] 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. Also, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data stored in a memory), etc. Also, "determining" may include parsing, retrieving, selecting, choosing, establishing, and other such similar actions.

[0277] In the drawings, similar components or features may have the same reference label. In addition, various components of the same type may be distinguished by following the reference label with a dash and a second label to distinguish between the similar components. If only the first reference label is used in the specification, the description may apply to any of the similar components having the same first reference label, regardless of the second or other subsequent reference labels.

[0278] 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." The 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.

[0279] 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 method for wireless communication at a user equipment (UE), comprising: receiving control signaling comprising an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band comprising a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier being used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using time division duplexing in accordance with the configuration; and A plurality of messages is communicated concurrently with the wireless device using the first carrier and the second carrier.

2. The method of claim 1 , wherein receiving the control signaling including the indication comprises: receiving a first indication of the first carrier paired with the second carrier in the first operating frequency band and a second indication identifying the second carrier unpaired with the second carrier, wherein the second carrier is used for both transmitting from and receiving at the UE based at least in part on the first indication and the second indication.

3. The method according to claim 1, wherein receiving the control signaling comprises: receiving a second indication that the first carrier is to be used for frequency division duplexing or supplemental downlink at the UE and the second carrier is to be used for time division duplexing at the UE, wherein the first carrier is to be used for transmission from or reception at the UE and the second carrier is to be used for transmission from or reception at the UE based at least in part on the second indication.

4. The method according to claim 1, further comprising: Second control signaling is received, the second control signaling comprising a second indication for the UE to switch from one of transmitting from the UE or receiving at the UE using the first carrier in a first set of time intervals to a different one of transmitting from the UE or receiving at the UE using the second carrier in a second set of time intervals.

5. The method of claim 4, wherein the second indication comprises an indication for the UE to switch from using a first bandwidth portion corresponding to the one of transmitting from the UE or receiving at the UE using the first carrier to using a second bandwidth portion corresponding to the different one of transmitting from the UE or receiving at the UE using the second carrier.

6. The method according to claim 1, further comprising: Second control signaling is received, the second control signaling identifying a mapping between a channel and two or more of a downlink, an uplink, or a sidelink, wherein the channel comprises a quality of service flow, a radio frequency bearer, a radio link control channel or bearer, a logical channel, wherein communicating the plurality of messages is based at least in part on the mapping.

7. The method according to claim 1, further comprising: receiving second control signaling including a second indication that schedules a first message to be communicated using first one or more resources from a resource pool and a second message to be communicated using second one or more resources from the resource pool, wherein the first one or more resources are associated with the first carrier and the second one or more resources are associated with the second carrier, and wherein communicating the plurality of messages is based at least in part on the second indication.

8. The method according to claim 1, further comprising: First scheduling information for a first message of the plurality of messages to be communicated using the first carrier and second scheduling information for a second message of the plurality of messages to be communicated using the second carrier are received, the first carrier and the second carrier being separately scheduled.

9. The method according to claim 1, further comprising: Second control signaling is received, the second control signaling including a second indication of a first number of hybrid automatic repeat request processes associated with the first carrier and a second number of hybrid automatic repeat request processes associated with the second carrier.

10. The method according to claim 1, wherein the first carrier and the second carrier are used at least for transmission from the UE, the method further comprising: Second control signaling is received, the second control signaling comprising a second indication for the UE to send feedback associated with communicating the plurality of messages using the first carrier, the second carrier, or both.

11. The method according to claim 1, further comprising: receiving second control signaling including a second indication identifying at least one type of signal to be sent from the UE or received at the UE using the first carrier during a random access procedure and at least one corresponding type of signal to be sent from the UE and received at the UE using the second carrier during the random access procedure.

12. The method of claim 11, wherein the second control signaling further comprises a third indication of a first timing advance value to be used at the UE for the first carrier and a second timing advance value to be used at the UE for the second carrier.

13. The method according to claim 1, further comprising: Second control signaling is received, the second control signaling including a second indication for the UE to perform received power measurement for channel state information reporting using the first carrier, the second carrier, or both.

14. The method according to claim 1, further comprising: Sending second control signaling, the second control signaling including a second indication of at least one capability of the UE, the at least one capability including a ratio between a capacity for transmission from the UE and a capacity for reception at the UE, a capability of the UE to perform full-duplex communication, a capability of the UE to perform half-duplex communication, a processing time supported at the UE, a buffer size supported at the UE, or any combination thereof.

15. A method for wireless communication at a network entity, comprising: transmitting control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a band of radio spectrum, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier being used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using time division duplexing in accordance with the configuration; and A plurality of messages is communicated concurrently with the wireless device using the first carrier and the second carrier.

16. The method of claim 15, wherein sending the control signaling comprises: A first indication of the first carrier paired with the second carrier in the first operating frequency band and a second indication identifying the second carrier unpaired with the second carrier are transmitted, wherein the second carrier is used for both transmitting from and receiving at the wireless device based at least in part on the first indication and the second indication.

17. The method of claim 15, wherein sending the control signaling comprises: and transmitting a second indication that the first carrier is to be used for frequency division duplex or supplemental downlink at the wireless device and the second carrier is to be used for time division duplex at the wireless device, wherein the first carrier is to be used for transmission from the wireless device or reception at the wireless device and the second carrier is to be used for transmission from the wireless device and reception at the wireless device based at least in part on the second indication.

18. The method according to claim 15, further comprising: Second control signaling is sent, the second control signaling including a second indication for the wireless device to switch from one of transmitting from the wireless device or receiving at the wireless device using the first carrier in a first set of time intervals to a different one of transmitting from the wireless device or receiving at the wireless device using the second carrier in a second set of time intervals.

19. The method according to claim 15, further comprising: Second control signaling is sent, the second control signaling comprising a second indication identifying at least one respective transmission channel for the first carrier and the second carrier, wherein communicating the plurality of messages is based at least in part on the second indication.

20. The method of claim 19, wherein the second indication comprises an indication for the wireless device to switch from using a first bandwidth portion corresponding to the one of transmitting from the wireless device or receiving at the wireless device using the first carrier to using a second bandwidth portion corresponding to the different one of transmitting from the wireless device or receiving at the wireless device using the second carrier.

21. The method of claim 15, further comprising: Sending second control signaling that identifies a mapping between a channel and two or more of a downlink, an uplink, or a sidelink, wherein the channel comprises a quality of service flow, a radio frequency bearer, a radio link control channel or bearer, a logical channel, wherein communicating the plurality of messages is based at least in part on the mapping.

22. The method of claim 15, further comprising: sending second control signaling including a second indication that schedules a first message to be communicated using first one or more resources from a resource pool and a second message to be communicated using second one or more resources from the resource pool, wherein the first one or more resources are associated with the first carrier and the second one or more resources are associated with the second carrier, and wherein communicating the plurality of messages is based at least in part on the second indication.

23. The method of claim 15, further comprising: First scheduling information for a first message of the plurality of messages to be communicated using the first carrier and second scheduling information for a second message of the plurality of messages to be communicated using the second carrier are sent, the first carrier and the second carrier being separately scheduled.

24. The method of claim 15, further comprising: Second control signaling is sent, the second control signaling including a second indication of a first number of hybrid automatic repeat request processes associated with the first carrier and a second number of hybrid automatic repeat request processes associated with the second carrier.

25. The method of claim 15, wherein the first carrier and the second carrier are used at least for transmission from the wireless device, the method further comprising: Second control signaling is sent, the second control signaling comprising a second indication for the wireless device to send feedback associated with communicating the plurality of messages using the first carrier, the second carrier, or both.

26. The method of claim 25, wherein the second control signaling further comprises a third indication of a first timing advance value to be used at the wireless device for the first carrier and a second timing advance value to be used at the wireless device for the second carrier.

27. The method of claim 15, further comprising: Second control signaling is sent, the second control signaling including a second indication for the wireless device to perform received power measurement for channel state information reporting using the first carrier, the second carrier, or both.

28. The method of claim 15, wherein the wireless device comprises a user equipment (UE), the method further comprising: receiving second control signaling including a second indication of at least one capability of the UE, the at least one capability including a ratio between a capacity for transmission from the UE and a capacity for reception at the UE, a capability of the UE to perform full-duplex communication, a capability of the UE to perform half-duplex communication, a processing time supported at the UE, a buffer size supported at the UE, or any combination thereof.

29. An apparatus for wireless communication at a user equipment (UE), comprising: processor; and a memory coupled to the processor, wherein the memory includes instructions executable by the processor to cause the apparatus to: receiving control signaling comprising an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a radio spectrum band, the first operating band comprising a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier being used for one of transmitting from the UE or receiving at the UE, and wherein the second carrier is used for both transmitting from the UE and receiving at the UE using time division duplexing in accordance with the configuration; and A plurality of messages is communicated concurrently with the wireless device using the first carrier and the second carrier.

30. An apparatus for wireless communication at a network entity, comprising: processor; and a memory coupled to the processor, wherein the memory includes instructions executable by the processor to cause the apparatus to: transmitting control signaling including an indication of a configuration for wirelessly communicating with a wireless device using a first operating band of a band of radio spectrum, the first operating band including a first carrier paired with a second carrier of the first operating band, wherein the first carrier is separated in frequency from the second carrier, the first carrier being used for one of transmitting from the wireless device or receiving at the wireless device, and wherein the second carrier is used for both transmitting from the wireless device and receiving at the wireless device using time division duplexing in accordance with the configuration; and A plurality of messages is communicated concurrently with the wireless device using the first carrier and the second carrier.

Images