Techniques for frequency error correction

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may communicate via a first component carrier (CC) during a first time period. The UE may communicate via a second CC during a second time period. The UE may receive a first indication to deactivate the second CC during a third time period, the third time period at least partially overlapping the first time period. The UE may receive a second indication to activate the second CC for communication during a fourth time period. The UE may communicate via the second component carrier during the fourth time period using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction based at least in part on a frequency error of the first CC during the third time period. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 365,576, filed on May 31, 2022, entitled “TECHNIQUES FOR FREQUENCY ERROR CORRECTION,” and U.S. Non-Provisional Patent Application No. 18 / 313,052, filed on May 5, 2023, entitled “TECHNIQUES FOR FREQUENCY ERROR CORRECTION,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for techniques for frequency error correction. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] A wireless network may include one or more network nodes that support communications for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. A "downlink" (or "DL") refers to a communication link from a network node to a UE, and an "uplink" (or "UL") refers to a communication link from a UE to a network node. Some wireless networks may support device-to-device communications, such as via a local link (e.g., a side link (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region and / or global level. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to improve spectrum efficiency, reduce costs, improve services, utilize new spectrum, and better integrate with other open standards by using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink, using CP-OFDM and / or single carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation, so as to better support mobile broadband Internet access. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR and other radio access technologies remain useful. Summary of the invention

[0007] Some aspects described herein relate to a method of performing wireless communications by a user equipment (UE). The method may include communicating via a first component carrier during a first time period. The method may include communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period. The method may include receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping the first time period. The method may include receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period. The method may include communicating via the second component carrier during the fourth time period based at least in part on an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

[0008] Some aspects described herein relate to a UE for wireless communication. The UE may include a memory and one or more processors, the one or more processors coupled to the memory. The one or more processors may be configured to communicate via a first component carrier during a first time period. The one or more processors may be configured to communicate via a second component carrier during a second time period, the second time period at least partially overlapping the first time period. The one or more processors may be configured to receive a first indication of deactivating the second component carrier during a third time period, the third time period being after the second time period and at least partially overlapping the first time period. The one or more processors may be configured to receive a second indication of activating the second component carrier for communication during a fourth time period, the fourth time period being after the third time period. The one or more processors may be configured to communicate via the second component carrier during the fourth time period based at least in part on an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to communicate via a first component carrier during a first time period. The set of instructions, when executed by one or more processors of the UE, may cause the UE to communicate via a second component carrier during a second time period, the second time period at least partially overlapping the first time period. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive a first indication of deactivating the second component carrier during a third time period, the third time period being after the second time period and at least partially overlapping the first time period. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive a second indication of activating the second component carrier for communication during a fourth time period, the fourth time period being after the third time period. The instruction set, when executed by one or more processors of the UE, may cause the UE to communicate via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

[0010] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for communicating via a first component carrier during a first time period. The apparatus may include means for communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period. The apparatus may include means for receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping the first time period. The apparatus may include means for receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period. The apparatus may include means for communicating via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

[0011] Some aspects described herein relate to a method for performing wireless communications by a user equipment UE. The method may include communicating via a first component carrier during a first time period. The method may include communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period. The method may include receiving a first indication to deactivate the second component carrier during a third time period, the third time period being after the second time period and at least partially overlapping the first time period. The method may include receiving one or more reference signals during the third time period. The method may include receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being after the third time period. The method may include communicating via the second component carrier during the fourth time period based at least in part on an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on the one or more reference signals received during the third time period.

[0012] Some aspects described herein relate to a user equipment UE for wireless communication. The user equipment may include one or more memories and one or more processors, the one or more processors being coupled to the one or more memories. The one or more processors may be configured to communicate via a first component carrier during a first time period. The one or more processors may be configured to communicate via a second component carrier during a second time period, the second time period at least partially overlapping the first time period. The one or more processors may be configured to receive a first indication of deactivating the second component carrier during a third time period, the third time period being after the second time period and at least partially overlapping the first time period. The one or more processors may be configured to receive one or more reference signals during the third time period. The one or more processors may be configured to receive a second indication of activating the second component carrier for communication during a fourth time period, the fourth time period being after the third time period. The one or more processors may be configured to communicate via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on the one or more reference signals received during the third time period.

[0013] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a user equipment UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to communicate via a first component carrier during a first time period. The set of instructions, when executed by one or more processors of the UE, may cause the UE to communicate via a second component carrier during a second time period, the second time period at least partially overlapping the first time period. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive a first indication of deactivating the second component carrier during a third time period, the third time period being after the second time period and at least partially overlapping the first time period. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive one or more reference signals during the third time period. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive a second indication of activating the second component carrier for communication during a fourth time period, the fourth time period being after the third time period. The instruction set, when executed by one or more processors of the UE, may cause the UE to communicate via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on the one or more reference signals received during the third time period.

[0014] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for communicating via a first component carrier during a first time period. The apparatus may include means for communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period. The apparatus may include means for receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping the first time period. The apparatus may include means for receiving one or more reference signals during the third time period. The apparatus may include means for receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period. The apparatus may include means for communicating via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on the one or more reference signals received during the third time period.

[0015] The various aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices and / or processing systems as fully described herein with reference to the drawings and description and as illustrated in the drawings and description.

[0016] The features and technical advantages of the examples according to the present disclosure have been outlined quite extensively above in order to better understand the subsequent specific embodiments. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily used as a basis for modifying or designing other structures for the same purpose of achieving the present disclosure. Such equivalent constructions do not depart from the scope of protection of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the drawings is provided for the purpose of illustration and description, and not as a definition of the limitations of the claims.

[0017] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology described herein can be implemented using different platform types, devices, systems, shapes, sizes and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components and / or system-level components. The equipment incorporating the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to fully understand the above-mentioned features of the present disclosure, a more specific description of the invention briefly summarized above can be obtained by referring to various aspects (some of which are illustrated in the accompanying drawings). However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the specification may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0019] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0020] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0021] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0022] Figure 4 is a diagram illustrating an example of carrier aggregation according to the present disclosure.

[0023] Figure 5 is a diagram illustrating an example of frequency error associated with carrier aggregation according to the present disclosure.

[0024] Figure 6 is a diagram of an example associated with frequency error correction according to the present disclosure.

[0025] Figure 7 is a diagram illustrating an example associated with frequency error correction according to the present disclosure.

[0026] Figure 8 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0027] Fig. 9 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0028] Fig.10 is a diagram illustrating an example associated with frequency error correction according to the present disclosure.

[0029] Fig.11 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0030] Fig.12 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0031] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be construed as being limited to any specific structure or function presented throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. It should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods that are practiced using other structures, functionality, or structures and functionality in addition to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein may be embodied by one or more elements of the claims.

[0032] Various aspects are generally related to identifying an initial frequency error of a component carrier. Some aspects are more specifically related to using the frequency error of a first (in time) component carrier to identify the frequency error of a second component carrier (after the first component carrier). In some examples, the first component carrier may include a primary component carrier (primary cell (PCell)), and the second component carrier may include a secondary component carrier (secondary cell (SCell)). In some aspects, a UE may communicate via a second component carrier during a first time period, during which the UE identifies the frequency error (frequency drift) of the second component carrier. The UE may deactivate the secondary cell and may continue to communicate via the first cell. When the secondary cell is inactive, the frequency error may change from the frequency error identified when communicating via the secondary cell. In the case where the second component carrier is inactive, the UE may not be able to directly detect the frequency error change, so the UE may detect the frequency error change of the first component carrier. When the secondary cell is reactivated, the UE may use the most recently detected frequency error of the second cell and the frequency error change of the first component carrier to identify the initial frequency error of the second cell at the time of reactivation.

[0033] Certain aspects of the subject matter described in this disclosure may be implemented to achieve one or more of the following potential advantages. In some examples, by using changes detected in a first component carrier, the described techniques may be used to improve the accuracy of an initial frequency error when reactivating a second component carrier. In this way, the UE may save computational, power, communication, and network resources that may have otherwise been used to identify a correct frequency error from a less accurate initial frequency error and / or based at least in part on a failure to establish a connection with a second cell (based at least in part on the initial frequency error being too inaccurate).

[0034] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0035] Although various aspects may be described herein using terms generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applicable to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RATs (e.g., 6G).

[0036] Figure 11 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network node 110a, network node 110b, network node 110c, and network node 110d), one user equipment (UE) 120 or multiple UEs 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, which means that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a decomposed network node (sometimes referred to as a decomposed base station), which means that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed between two or more nodes (such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).

[0037] In some examples, the network node 110 is or includes a network node that communicates with the UE 120 via a radio access link, such as an RU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, the network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or communicates with the core network via a backhaul link, such as a CU. In some examples, the network node 110 (such as an aggregated network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. The network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, a RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 via various types of fronthaul interfaces, midhaul interfaces, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0038] In some examples, the network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​the network node 110 and / or a network node subsystem serving the coverage area, depending on the context in which the term is used. The network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 120 with a service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by a UE 120 with a service subscription. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by a UE 120 associated with the femto cell (e.g., a UE 120 in a closed subscriber group (CSG)). A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. Figure 1 In the example shown in , network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of ​​a cell may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0039] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a decomposed base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, a RU, a near real-time (near RT) RAN intelligent controller (RIC) or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a device configured to perform one or more functions (such as those described herein in conjunction with network node 110). In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of a number of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeat the execution of at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one of the base station functions but not the other. In this way, a single device may include more than one base station.

[0040] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown, a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0041] The wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0042] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for these network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be a CU or a core network device, or may include a CU or a core network device.

[0043] UE 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless medium or a wired medium.

[0044] Some UEs 120 may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors and / or location tags, which may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered as Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered as customer premises equipment. UE 120 may be included inside a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, a processor component and a memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., a memory) may be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0045] In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. RAT may be referred to as a radio technology, air interface, etc. Frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0046] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using network node 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, or vehicle-to-pedestrian (V2P) protocol) and / or mesh network. In such examples, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0047] The devices of the wireless network 100 may communicate using an electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., based on frequency or wavelength. For example, the devices of the wireless network 100 may communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency ranges designated FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). It should be understood that, although portions of FR1 are greater than 6 GHz, FR1 is often (interchangeably) referred to as the “below 6 GHz” band in various documents and articles. Similar naming issues sometimes occur with respect to FR2, which is often (interchangeably) referred to as the “millimeter wave” band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0048] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as frequency range designation FR3 (7.125GHz–24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and therefore can effectively extend the features of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6GHz–71GHz), FR4 (52.6GHz–114.25GHz), and FR5 (114.25GHz–300GHz). Each of these higher frequency bands falls within the EHF band.

[0049] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be lower than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0050] In some aspects, UE 120 may include a communications manager 140. As described in greater detail elsewhere herein, communications manager 140 may communicate via a first component carrier during a first time period, communicate via a second component carrier during a second time period that at least partially overlaps with the first time period, receive a first indication to deactivate the second component carrier during a third time period that is subsequent to the second time period and at least partially overlaps with the first time period, receive a second indication to activate the second component carrier for communication during a fourth time period that is subsequent to the third time period, and communicate via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period that is based at least in part on a frequency error of the first component carrier during the third time period.

[0051] In some aspects, UE 120 may include a communications manager 140. As described in greater detail elsewhere herein, communications manager 140 may communicate via a first component carrier during a first time period, communicate via a second component carrier during a second time period, the second time period at least partially overlapping with the first time period, receive a first indication to deactivate the second component carrier during a third time period, the third time period subsequent to the second time period and at least partially overlapping with the first time period, receive one or more reference signals during the third time period, receive a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period subsequent to the third time period, and communicate via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction based at least in part on the one or more reference signals received during the third time period.

[0052] Additionally or alternatively, the communications manager 140 may perform one or more other operations described herein.

[0053] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 Different than described.

[0054] Figure 22 is a diagram illustrating an example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). The UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). The network node 110 of example 200 includes one or more radio frequency components, such as an antenna 234 and a modem 254. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include a radio frequency component that facilitates direct communication with the UE 120, such as one or more CUs or one or more DUs.

[0055] At the network node 110, a transmit processor 220 may receive data intended for a UE 120 (or a set of UEs 120) from a data source 212. The transmit processor 220 may select one or more modulation and coding schemes (MCS) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS selected for the UE 120, and provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource allocation information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modulators) (shown as modems 232a to 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (eg, T downlink signals) via a corresponding set of antennas 234 (eg, T antennas) (shown as antennas 234a through 234t).

[0056] At the UE 120, a set of antennas 252 (shown as antennas 252a to 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a to 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols where applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260, and may provide decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter, among other things. In some examples, one or more components of the UE 120 may be included in a housing.

[0057] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0058] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (in a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or may be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0059] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, where applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and sent to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to perform the functions described herein (eg, reference Figures 6 to 9 ) any aspects of any of the methods described herein.

[0060] At the network node 110, uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., a demodulator component (shown as DEMOD) of the modem 232), detected by the MIMO detector 236 (where applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to execute the instructions described herein (e.g., reference 2 Figures 4 to 9 ) any aspects of any of the methods described herein.

[0061] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the network node 110 may perform one or more techniques associated with frequency error correction, as described in more detail elsewhere herein. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 8 800 and / or operations of other processes as described herein. Memory 242 and memory 282 may store data and program codes for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of network node 110 and / or UE 120 (e.g., directly, or after compilation, conversion and / or interpretation), may cause the one or more processors, UE 120 and / or network node 110 to perform or direct, for example, Figure 8 The process 800 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0062] In some aspects, a UE (e.g., UE 120) includes means for communicating via a first component carrier during a first time period; means for communicating via a second component carrier during a second time period, the second time period at least partially overlapping with the first time period; means for receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping with the first time period; means for receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period; and / or means for communicating via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the start of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

[0063] In some aspects, a user equipment (UE) includes means for communicating via a first component carrier during a first time period; means for communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period; means for receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping the first time period; means for receiving one or more reference signals during the third time period; means for receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period; and / or means for communicating via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on the one or more reference signals received during the third time period. Means for the user equipment (UE) to perform operations described herein may include, for example, one or more of the communication manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0064] Means for the UE to perform operations described herein may include, for example, one or more of the following: communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0065] Although Figure 2 The blocks in the 2000 and 2010 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0066] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 Different than described.

[0067] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or components in a variety of ways. In a 5G NR system or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station or network equipment can be implemented in an aggregated or decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) that perform base station functionality can be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. A "network entity" or a "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0068] An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A decomposed base station (e.g., a decomposed network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0069] Base station type operations or network designs may take into account the aggregated nature of base station functionality. For example, a decomposed base station may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A decomposed base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which may enable flexibility in network design. Individual units of a decomposed base station may be configured for wired or wireless communication with at least one other unit of the decomposed base station.

[0070] Figure 33 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. The decomposed base station architecture 300 may include a CU 310, which may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more decomposed control units (such as a near-RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via an F1 interface. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0071] Each of the units (including CU 310, DU 330, RU 340) and the near-RT RIC 325, non-RT RIC 315, and SMO framework 305 may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more of the other units via a transmission medium. In some examples, each of these units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or send signals to one or more of the other units via a wired transmission medium, and the wireless interface may include a receiver, a transmitter, or a transceiver (such as an RF transceiver), which is configured to receive signals or send signals to one or more of the other units via a wireless transmission medium, or both.

[0072] In some aspects, CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 310. CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, CU310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface such as an E1 interface. As needed, CU 310 may be implemented to communicate with DU 330 for network control and signaling.

[0073] Each DU 330 may correspond to a logical unit including one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of a radio link control (RLC) layer, a MAC layer, and one or more high physical (PHY) layers, at least in part, according to a functional partition such as that defined by 3GPP. In some aspects, one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc. In some aspects, the DU 330 may also host one or more low PHY layers, such as by one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0074] Each RU 340 may implement lower layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions based on functional splits (e.g., functional splits defined by 3GPP) such as lower layer functional splits, or low PHY layer functions such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering. In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture (such as a vRAN architecture).

[0075] The SMO framework 305 may be configured to support RAN deployment and configuration of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 335) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some specific implementations, the SMO framework 305 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0076] The non-RT RIC 315 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 may be coupled to or communicate with the near-RT RIC 325 (such as via an A1 interface). The near-RT RIC 325 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0077] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0078] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 Different than described.

[0079] Figure 4 is a diagram illustrating an example 400 of carrier aggregation according to the present disclosure.

[0080] Carrier aggregation is a technique that enables two or more component carriers (CCs, sometimes referred to as carriers) to be combined (e.g., combined into a single channel) for a single UE 120 to enhance data capacity. As shown, carriers may be combined in the same or different frequency bands. Additionally or alternatively, contiguous or non-contiguous carriers may be combined. The network node 110 may configure carrier aggregation for the UE 120 (such as in an RRC message, downlink control information (DCI), and / or another signaling message).

[0081] As indicated by reference numeral 405, in some aspects, carrier aggregation may be configured in an intra-band contiguous mode, where the aggregated carriers are contiguous with each other and in the same frequency band. As indicated by reference numeral 410, in some aspects, carrier aggregation may be configured in an intra-band discontiguous mode, where the aggregated carriers are discontiguous with each other and in the same frequency band. As indicated by reference numeral 415, in some aspects, carrier aggregation may be configured in an inter-band discontiguous mode, where the aggregated carriers are discontiguous with each other and in different frequency bands.

[0082] In carrier aggregation, a UE 120 may be configured with a primary carrier or PCell and one or more secondary carriers or SCells. In some aspects, the primary carrier may carry control information (e.g., downlink control information and / or scheduling information) for scheduling data communications on one or more secondary carriers, which may be referred to as cross-carrier scheduling. In some aspects, a carrier (e.g., a primary carrier or a secondary carrier) may carry control information for scheduling data communications on the carrier, which may be referred to as self-carrier scheduling or carrier self-scheduling.

[0083] In some networks, UE 120 may communicate via the first component carrier but not the second component carrier during a first time period. The UE may also communicate via the first component carrier and the second component carrier during a second time period. The UE may alternate between time periods during which it communicates with only one of the first component carrier or the second component carrier and time periods during which it communicates with both the first component carrier and the second component carrier.

[0084] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 Different than described.

[0085] Figure 5 is a diagram illustrating an example 500 of frequency error associated with carrier aggregation according to the present disclosure.

[0086] As indicated by reference numeral 505, the UE may communicate via the first component carrier during the first time period. As indicated by reference numeral 510, the UE may communicate via the first component carrier and via the second component carrier during the second time period. As indicated by reference numeral 515, the UE may communicate via the first component carrier and not via the second component carrier during the third time period. As indicated by reference numeral 520, the UE may communicate via the first component carrier and via the second component carrier during the fourth time period. For example, the communications described in conjunction with reference numerals 505 to 520 may be performed sequentially.

[0087] Communications via the first component carrier may have a first component carrier frequency error 525. Communications via the second component carrier may have a second component carrier frequency error 530. The frequency error may be based at least in part on the temperature of the UE and / or other environmental parameters that may vary during the time period.

[0088] like Figure 5 As shown, when the UE is not communicating via the second component carrier, the first component carrier frequency error 525 may change during the third time period. For example, the first component carrier frequency error 525 may be associated with a frequency error change 535. The frequency error change 535 may be based at least in part on environmental changes and / or temperature changes of the UE.

[0089] During the fourth time period, when resuming communication via the second component carrier, the UE may use the initial frequency error 540. However, based at least in part on the environmental change and / or temperature change that caused the frequency error change 535, the initial frequency error 540 may be inaccurate. Based at least in part on using the inaccurate initial frequency error 540, when resuming communication, the UE may be inaccurate in correcting the frequency error of the second component carrier. This may result in communication errors that consume power, computing, network, and / or communication resources to detect and correct, and / or may cause the UE to discard the second component carrier. Based at least in part on discarding the second component carrier, the UE may communicate with the network node with unnecessary inefficiency, unnecessary delays, and / or using scarce resources of the first component carrier.

[0090] Communication errors may be caused at least in part by modem performance that is sensitive to frequency error. For example, the residual frequency error at the UE may have a threshold (e.g., < 0.04 parts per million (ppm)) to avoid performance issues. The frequency error may be based at least in part on the temperature of the UE.

[0091] In some networks (e.g., NR networks), a frequency tracking loop (FTL) may use a synchronization signal block (SSB) and / or a tracking reference signal (TRS) to periodically estimate and correct the frequency error. The FTL may have a limited "pull-in" range, which means that the FTL can only correct relatively small errors (e.g., 2ppm). If the error is outside the FTL pull-in range, the UE will eventually drop the call and initiate cell acquisition, which can correct larger errors such as 5ppm or more.

[0092] The source of frequency error may be a change in the local oscillator around its nominal frequency due to temperature variation. The frequency error (e.g., oscillator frequency error) as a function of temperature may be modeled as a 3rd order polynomial. The oscillator manufacturer may specify a range of c0 to c3 parameters (e.g., minimum value, nominal value, maximum value). In some devices, the temperature gradient may be steeper (e.g., having a relatively large effect on the frequency error at a relatively small temperature change). If not corrected, the corresponding frequency error may fall outside the FTL pull-in range, which may cause the UE to discard the second component carrier.

[0093] In an example scenario, a primary component carrier (PCC) and a secondary component carrier (SCC) may have an error of 6.82 ppm when at a first temperature (e.g., 59 degrees Fahrenheit). The SCC is deactivated without releasing its configuration. The modem temperature at the UE decreases and the frequency error reported by the PCC drops to 4.59 ppm. Because the SCC is deactivated, no frequency error updates are made to the SCC during this time. Based at least in part on the most recent valid value of the SCC, the SCC is reactivated and its initial error is initialized to 6.82 ppm. The error is outside the FTL pull-in range, so the FTL "misidentifies" the error as 9 ppm and the frequency error cannot be corrected, resulting in performance issues that consume power, computing, network, and communication resources to detect and correct.

[0094] In some aspects described herein, the UE may use an initial frequency error for a component carrier based at least in part on a frequency error of an additional component carrier during a previous time period. In some aspects, the UE initial frequency error may be based at least in part on a frequency error of an additional component carrier based at least in part on detecting that the frequency error has changed significantly since a deactivation time of the component carrier. In this way, the UE may initialize using a more reliable source of frequency error after reactivation.

[0095] In some aspects, at the time of deactivation, the UE may save two frequency errors (e.g., PCC error and SCC error). When the component carrier (e.g., SCC) is reactivated, the UE may check whether the frequency error of the additional component carrier (e.g., PCC) has changed significantly (e.g., the change amount meets a threshold) compared to the stored value from the additional component carrier (e.g., PCC) at the time of deactivation. If so, the UE may use an initial frequency error of the component carrier, which is based at least in part on the latest frequency error of the additional component carrier; otherwise, the UE may resume communication via the component carrier with the stored component carrier error.

[0096] In some aspects, the UE may determine to base the initial frequency error of the component carrier on the frequency error of the additional component carrier based at least in part on satisfying one or more frequency error change metrics. For example, the one or more frequency error change metrics may include whether the time elapsed since the last valid update (e.g., the deactivation time of the component carrier) is too large (e.g., >2 seconds), whether the frequency error of the additional component carrier exhibits too large a frequency drift (e.g., the change or error from the time of component carrier deactivation to the time of component carrier reactivation is greater than a threshold amount, such as 1 ppm), the temperature change is too large (e.g., the temperature change from the time of component carrier deactivation to the time of component carrier reactivation is greater than a threshold amount, such as 5 degrees Fahrenheit), etc.

[0097] In some aspects, the UE may use the frequency error of the additional component carrier during a previous time period. In some aspects, the UE may adjust the most recent frequency error of the component carrier according to the amount of change in the frequency error of the additional component carrier during the deactivation time of the component carrier. In other aspects, the UE may use an adjusted frequency error based at least in part on the frequency error of the additional component carrier during a previous time period, wherein the adjustment is made for a difference between the frequency errors of the component carrier and the additional component carrier observed during a time period when both were active.

[0098] Based at least in part on an initial frequency error of the UE's use of the component carrier, the initial frequency error being based at least in part on a frequency error of the additional component carrier during an inactive period of the component carrier, when resuming communications, the UE may have improved accuracy in correcting the frequency error of the second component carrier. This may reduce communication errors that may otherwise consume power, computational, network, and / or communication resources to detect and correct, and / or may enable the UE to avoid discarding the second component carrier. Based at least in part on avoiding discarding the second component carrier, the UE may communicate with the network node with improved efficiency, improved latency, and / or reduced resource consumption of the first component carrier.

[0099] Figure 6 is a diagram of an example 600 associated with frequency error correction according to the present disclosure. Figure 6 As shown, a network node (e.g., network node 110, CU, DU, and / or RU) may communicate with a UE (e.g., UE 120). In some aspects, the network node and the UE may be part of a wireless network (e.g., wireless network 100). The UE and the network node may be in Figure 6 The illustrated operations are preceded by establishing a wireless connection. In some aspects, the wireless connection may support carrier aggregation and / or other multi-carrier communications.

[0100] As indicated by reference numeral 605, the network node may send configuration information, and the UE may receive the configuration information. In some aspects, the UE may receive the configuration information via one or more of RRC signaling, one or more medium access control (MAC) control elements (CEs), and / or DCI, etc. In some aspects, the configuration information may include, among other things, an indication of one or more configuration parameters for the UE to select (e.g., known to the UE and / or previously indicated by the network node or other network device) and / or explicit configuration information for the UE to configure the UE.

[0101] In some aspects, the configuration information may indicate that the UE will communicate via a first component carrier (e.g., PCC) and / or a second component carrier (e.g., SCC). In some aspects, the configuration information may indicate a configuration of the first component carrier and the second component carrier, such as a search space for receiving control messages, a configuration for activating and / or deactivating the second component carrier, and / or a bandwidth part (BWP) of the first component carrier and the second component carrier.

[0102] The UE may configure itself based at least in part on the configuration information.In some aspects, the UE may be configured to perform one or more operations described herein based at least in part on the configuration information.

[0103] As indicated by reference numeral 610, the UE and the network node may communicate via the first component carrier. For example, the UE may send uplink communications to the network node and / or receive downlink communications from the network node via the first component carrier during the first time period. In some aspects, the communications via the first component carrier may include communications with relatively high reliability requirements. In some aspects, the communications via the first component carrier may have relatively low bandwidth requirements.

[0104] As indicated by reference numeral 615, the UE and the network node may communicate via the first component carrier and via the second component carrier. For example, the UE may send uplink communications to the network node and / or receive downlink communications from the network node via the first component carrier and via the second component carrier during the second time period. In some aspects, the first component carrier may be a primary component carrier and the second component carrier may be a secondary component carrier.

[0105] In some aspects, the UE may communicate via the second component carrier in addition to the first component carrier based at least in part on receiving the indication to activate the second component carrier. In some aspects, the network node may send the indication to activate the second component carrier based at least in part on a determination to increase bandwidth for communications and / or conserve resources of the first component carrier, and the UE may receive the indication to activate the second component carrier, etc. For example, the UE may receive the indication to activate the second component carrier as a downlink component carrier during the second time period based at least in part on the second time period being associated with a relatively high amount of downlink data.

[0106] As indicated by reference numeral 620, the UE may receive and the network node may send an indication to deactivate the second component carrier within a third time period. In some aspects, the indication may include dynamic signaling, such as a MAC layer indication or a DCI. In some aspects, the indication to deactivate the second component carrier may not indicate a release of the configuration of the second component carrier. In this way, the UE may be able to reactivate the second component carrier without receiving a new configuration for the second component carrier. In some aspects, the UE may receive an indication to deactivate the second component carrier based at least in part on a change in one or more communication parameters.

[0107] As indicated by reference numeral 625, the UE and the network node may communicate via the first component carrier (e.g., during a third time period after deactivating the second component carrier). In some aspects, the communication via the first component carrier may include communication with relatively low bandwidth requirements such that the second component carrier is not necessary for the communication. For example, the UE may suspend a connection associated with a relatively high amount of downlink data or uplink data (e.g., video streaming).

[0108] As indicated by reference numeral 630, the UE may receive an indication to activate the second component carrier. In some aspects, the indication may include dynamic signaling, such as a MAC layer indication or a DCI. In some aspects, the UE may receive the indication to activate the second component carrier based at least in part on a change in one or more communication parameters. For example, the UE may receive the indication to activate the second component carrier based at least in part on an increase in the amount of data and / or load on the first component carrier, etc.

[0109] As indicated by reference numeral 635, the UE may determine whether one or more frequency error change metrics have been satisfied. In some aspects, the one or more frequency error change metrics include a third time period satisfying a duration threshold. For example, the UE may determine that the one or more frequency error change metrics are satisfied based at least in part on the amount of time that the third time period extends the duration threshold (e.g., as long as or longer than the duration threshold). Additionally or alternatively, the UE may determine that the one or more frequency error change metrics are satisfied based at least in part on a frequency error change of the first component carrier during the third time period satisfying the frequency error change threshold. In some aspects, the UE may determine that the one or more frequency error change metrics are satisfied based at least in part on a temperature change during the third time period satisfying a temperature change threshold.

[0110] In some aspects, the duration threshold, frequency error change threshold, and / or temperature change threshold are based at least in part on UE capabilities (e.g., error correction capabilities), communication protocols, and / or instructions from a network node (e.g., received in conjunction with the configuration information described in conjunction with reference numeral 605), etc.

[0111] As shown at reference numeral 640, the UE may configure an initial frequency error correction for the second component carrier based at least in part on a frequency error of the first component carrier (e.g., during a third time period). In some aspects, the frequency error of the first component carrier may be a basis for configuring an initial frequency error correction for the second component carrier based at least in part on satisfying one or more frequency error change metrics described in conjunction with reference numeral 635.

[0112] In some aspects, the UE may configure the initial frequency error correction based at least in part on the frequency error of the second component carrier at the end of the third time period, the difference between the frequency errors of the first component carrier and the second component carrier during the second time period, and / or the frequency error of the second component carrier at the end of the second time period, etc.

[0113] In some aspects, the initial frequency error correction of the second component carrier may be substantially equal to the frequency error correction of the first component carrier, the frequency error correction of the first component carrier being based at least in part on the frequency error of the first component carrier at the end of the third time period. In some aspects, the initial frequency error correction may be based at least in part on the frequency error of the second component carrier at the end of the second time period and the change in frequency error of the first component carrier during the third time period (e.g., the most recent frequency error of the second component carrier adjusted for the change in frequency error of the first component carrier during the inactive time of the second component carrier). In some aspects, the initial frequency error correction of the second component carrier may be based at least in part on the difference between the frequency error of the first component carrier at the end of the third time period and the frequency error of the second component carrier during the second time period and the frequency error of the first component carrier during the second time period (e.g., the most recent frequency error of the first component carrier adjusted for the difference in frequency error of the component carrier during the time when both component carriers are active).

[0114] In some aspects, the frequency error of the first component carrier can be a basis for configuring an initial frequency error correction for the second component carrier based at least in part on communication via the first component carrier and communication via the second component carrier using the same receive chain or transmit chain. For example, the first component carrier and the second component carrier can communicate using the same antenna group. In some aspects, the frequency error of the first component carrier can be a basis for configuring an initial frequency error correction for the second component carrier based at least in part on the first component carrier and the second component carrier being in the same frequency range (e.g., FR2, FR1 and / or bandwidth portion, etc.).

[0115] As indicated by reference numeral 645, the UE and the network node may communicate via the first component carrier and the second component carrier using the initial frequency error correction for the second component carrier. For example, the UE may send communications using the initial frequency error correction and / or receive communications using the initial frequency error correction.

[0116] In some aspects, the first time period may be defined as a time period including the UE communicating via at least the first component carrier. For example, communicating in conjunction with reference numerals 610, 615, 625, and / or 645 may be a first time period. Communicating in conjunction with reference numeral 615 may be defined as a second time period that at least partially overlaps with the first time period (e.g., the second time period includes the time when the UE communicates via the second component carrier, and at least partially overlaps with the first time period when the UE communicates via the first component carrier). The third time period may be defined as a time period when the second component carrier is inactive and the UE continues to communicate via the first component carrier. For example, the third time period may be after the second time period and at least partially overlaps with the first time period. The fourth time period may be defined as a time period when the second component carrier is active (e.g., after the third time period) and the UE continues to communicate via the first component carrier. The fourth time period overlaps at least partially with the first time period.

[0117] Based at least in part on an initial frequency error of the UE's use of the component carrier, the initial frequency error being based at least in part on a frequency error of the additional component carrier during an inactive period of the component carrier, when resuming communications, the UE may have improved accuracy in correcting the frequency error of the second component carrier. This may reduce communication errors that may otherwise consume power, computational, network, and / or communication resources to detect and correct, and / or may enable the UE to avoid discarding the second component carrier. Based at least in part on avoiding discarding the second component carrier, the UE may communicate with the network node with improved efficiency, improved latency, and / or reduced consumption of scarce resources of the first component carrier.

[0118] As indicated above, Figure 6 are provided as examples. Other examples can be found in relation to Figure 6 Different than described.

[0119] Figure 7 is a diagram illustrating an example 700 associated with frequency error correction according to the present disclosure. In example 700, a network node (e.g., network node 110, CU, DU, and / or RU) may communicate with a UE (e.g., UE 120). In some aspects, the network node and the UE may be part of a wireless network (e.g., wireless network 100). The UE and the network node may be in a Figure 7 The illustrated operations are preceded by establishing a wireless connection. In some aspects, the wireless connection may support carrier aggregation and / or other multi-carrier communications.

[0120] As indicated by reference numeral 705, the UE may communicate via the first component carrier during the first time period. As indicated by reference numeral 710, the UE may communicate via the first component carrier and via the second component carrier during the second time period. As indicated by reference numeral 715, the UE may communicate via the first component carrier and not via the second component carrier during the third time period. As indicated by reference numeral 720, the UE may communicate via the first component carrier and via the second component carrier during the fourth time period. In some aspects, one or more communications described in conjunction with reference numerals 705 to 720 may be performed sequentially.

[0121] Communications via the first component carrier may have a first component carrier frequency error 725. Communications via the second component carrier may have a second component carrier frequency error 730. The frequency error may be based at least in part on the temperature of the UE and / or other environmental parameters that may vary during the time period.

[0122] like Figure 7 As shown, when the UE is not communicating via the second component carrier, the first component carrier frequency error 725 may change during the third time period. For example, the first component carrier frequency error 725 may be associated with a frequency error change 735. The frequency error change 735 may be based at least in part on an environmental change and / or a temperature change of the UE. During the second time period, the first component carrier frequency error 725 and the second component carrier frequency error 730 may have a frequency error difference 740 (e.g., measured at the end of the second time period).

[0123] During the fourth time period, when resuming communication via the second component carrier, the UE may use the initial frequency error 740. In some aspects, the initial frequency error 740 may be based at least in part on the first component carrier frequency error 725, the frequency error change 735, the second component carrier frequency error 730 during the second time period, and / or the difference 740 of frequency errors.

[0124] In some aspects, the initial frequency error 740A can be an offset from the first component carrier frequency error 725 at the end of the third time period and / or the beginning of the fourth time period. The offset can be based at least in part on the frequency error change 735 and / or the difference in frequency error 740. For example, the initial frequency error 740A can be based at least in part on adding the difference in frequency error 740 to the first component carrier frequency error 725 at the end of the third time period and / or the beginning of the fourth time period. In some aspects, the initial frequency error 740A can be based at least in part on adding the frequency error change 735 (e.g., Figure 7 negative value as shown) to the second component carrier frequency error 730.

[0125] In some aspects, the initial frequency error 740B may be set to the same value as the first component carrier frequency error 725 at the end of the third time period and / or the beginning of the fourth time period. In some aspects, this may be used based at least in part on the first component carrier and the second component carrier operating using the same transmit chain, receive chain, and / or antenna group of the UE. In some aspects, this may be used based at least in part on the first component carrier and the second component carrier operating in the same frequency range.

[0126] As indicated above, Figure 7 are provided as examples. Other examples can be found in relation to Figure 7 Different than described.

[0127] Figure 8 is a diagram illustrating an example process 800 performed, for example, by a UE in accordance with the present disclosure. Example process 800 is an example of a UE (eg, UE 120) performing operations associated with techniques for frequency error correction.

[0128] like Figure 8 As shown, in some aspects, process 800 may include communicating via a first component carrier during a first time period (block 810). For example, a UE (e.g., using Fig. 9 The communication manager 140, receiving component 902, and / or sending component 904 depicted in FIG. 1 may communicate via the first component carrier during the first time period, as described above.

[0129] like Figure 8 As further shown, in some aspects, process 800 may include communicating via a second component carrier during a second time period that at least partially overlaps with the first time period (block 820). Fig. 9 The communication manager 140, receiving component 902, and / or sending component 904 depicted in FIG. 1 may communicate via the second component carrier during a second time period that at least partially overlaps with the first time period, as described above.

[0130] like Figure 8 As further shown, in some aspects, process 800 may include receiving a first indication to deactivate a second component carrier during a third time period that is subsequent to the second time period and at least partially overlaps with the first time period (block 830). Fig. 9 The communications manager 140 and / or receiving component 902 depicted in FIG. 1 may receive a first indication to deactivate a second component carrier during a third time period that is subsequent to the second time period and at least partially overlaps with the first time period, as described above.

[0131] like Figure 8As further shown, in some aspects, process 800 may include receiving a second indication to activate a second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period (block 840). Fig. 9 The communication manager 140 and / or receiving component 902 depicted in FIG. 1 may receive a second indication to activate a second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period, as described above.

[0132] like Figure 8 As further shown, in some aspects, process 800 may include communicating via the second component carrier during the fourth time period based at least in part on an initial frequency error correction at the beginning of using a fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period (block 850). Fig. 9 The communication manager 140, receiving component 902 and / or sending component 904 depicted in the figure may be based at least in part on an initial frequency error correction at the beginning of a fourth time period during which communication is performed via the second component carrier, and the initial frequency error correction is at least in part based on the frequency error of the first component carrier during the third time period, as described above.

[0133] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0134] In a first aspect, the initial frequency error correction is based at least in part on the frequency error of the first component carrier during the third time period, the frequency error being based at least in part on satisfying one or more frequency error change metrics.

[0135] In a second aspect, alone or in combination with the first aspect, the one or more frequency error change metrics include the third time period satisfying a duration threshold, the frequency error change of the first component carrier during the third time period satisfying a frequency error change threshold, or the temperature change during the third time period satisfying a temperature change threshold.

[0136] In a third aspect, either alone or in combination with one or more of the first and second aspects, one or more of the duration threshold, the frequency error change threshold, or the temperature change threshold is based at least in part on one or more of: capabilities of the UE; a communication protocol; or an indication from a network node associated with the first component carrier or the second component carrier.

[0137] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period, the frequency error being based at least in part on one or more of the following: communication via the first component carrier and communication via the second component carrier using the same receive chain or transmit chain; or the first component carrier and the second component carrier are within the same frequency range.

[0138] In the fifth aspect, alone or in combination with one or more aspects from the first to the fourth aspects, the initial frequency error correction is at least partially based on the frequency error of the first component carrier during the third time period, including: the initial frequency error correction is substantially equal to the frequency error correction of the first component carrier, and the frequency error correction of the first component carrier is at least partially based on the frequency error of the first component carrier at the end of the third time period.

[0139] In the sixth aspect, alone or in combination with one or more aspects from the first to the fifth aspects, the initial frequency error correction is at least partially based on the frequency error of the first component carrier during the third time period, including: the initial frequency error correction is at least partially based on: the frequency error of the second component carrier at the end of the second time period; and the change in the frequency error of the first component carrier during the third time period.

[0140] In the seventh aspect, alone or in combination with one or more aspects of the first to sixth aspects, the initial frequency error correction is at least partially based on the frequency error of the first component carrier during the third time period, including: the initial frequency error correction is at least partially based on: the frequency error of the first component carrier at the end of the third time period; and the difference between the frequency error of the second component carrier during the second time period and the frequency error of the first component carrier during the second time period.

[0141] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the second component carrier includes a secondary component carrier.

[0142] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, communicating via the second component carrier during the fourth time period includes: sending communication using the initial frequency error correction; or receiving communication using the initial frequency error correction.

[0143] although Figure 8 An example block diagram of process 800 is shown, but in some aspects, process 800 may include Figure 8Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 800. Additionally or alternatively, two or more blocks of the blocks of process 800 may be performed in parallel.

[0144] Fig. 9 is a diagram of an example apparatus 900 for wireless communication according to the present disclosure. The apparatus 900 may be a UE, or the UE may include the apparatus 900. In some aspects, the apparatus 900 includes a receiving component 902 and a sending component 904, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 900 may communicate with another apparatus 906 (such as a UE, a base station, or another wireless communication device) using the receiving component 902 and the sending component 904. As further shown, the apparatus 900 may include a communication manager 908 (e.g., the communication manager 140). In some aspects, the communication manager 908 may provide a control signal to the receiving component 902 and / or the sending component 904 in conjunction with performing one or more operations described herein, or receive a control signal from the receiving component and / or the sending component.

[0145] In some aspects, the apparatus 900 may be configured to perform Figure 6 to Figure 7 Additionally or alternatively, the apparatus 900 may be configured to perform one or more processes described herein, such as Figure 8 In some aspects, the apparatus 900 and / or Fig. 9 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, Fig. 9 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0146] The receiving component 902 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 906. The receiving component 902 may provide the received communications to one or more other components of the device 900. In some aspects, the receiving component 902 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the device 900. In some aspects, the receiving component 902 may include combining Figure 2One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0147] Transmit component 904 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 906. In some aspects, one or more other components of device 900 may generate communications and may provide the generated communications to transmit component 904 for transmission to device 906. In some aspects, transmit component 904 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to device 906. In some aspects, transmit component 904 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 904 can be co-located with the receive component 902 in a transceiver.

[0148] The receiving component 902 and / or the transmitting component 904 may communicate via the first component carrier during a first time period. The receiving component 902 and / or the transmitting component 904 may communicate via the second component carrier during a second time period, the second time period at least partially overlapping the first time period. The receiving component 902 may receive a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping the first time period. The receiving component 902 may receive a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period. The receiving component 902 and / or the transmitting component 904 may communicate via the second component carrier during the fourth time period based at least in part on an initial frequency error correction at the beginning of using the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

[0149] Fig. 9 The number and arrangement of components shown are provided as examples. In practice, there may be Fig. 9 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig. 9 Two or more components shown may be implemented in a single component, or Fig. 9 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig. 9 The component set (one or more components) shown may be described as being executable by Fig. 9 Another component shown is a collection of one or more functions performed.

[0150] The following provides an overview of some aspects of the disclosure:

[0151] Aspect 1: A method for performing wireless communications by a user equipment (UE), the method comprising: communicating via a first component carrier during a first time period; communicating via a second component carrier during a second time period, the second time period at least partially overlapping with the first time period; receiving a first indication to deactivate the second component carrier during a third time period, the third time period being after the second time period and at least partially overlapping with the first time period; receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being after the third time period; and communicating via the second component carrier during the fourth time period based at least in part on an initial frequency error correction at the start of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

[0152] Aspect 2: The method according to aspect 1, wherein the initial frequency error correction is based at least in part on the frequency error of the first component carrier during the third time period, and the frequency error is based at least in part on satisfying one or more frequency error change metrics.

[0153] Aspect 3: A method according to Aspect 2, wherein the one or more frequency error change metrics include: the third time period satisfies a duration threshold; the frequency error change of the first component carrier during the third time period satisfies a frequency error change threshold; or the temperature change during the third time period satisfies a temperature change threshold.

[0154] Aspect 4: A method according to Aspect 3, wherein one or more of the duration threshold, the frequency error change threshold, or the temperature change threshold is based at least in part on one or more of: the capabilities of the UE; a communication protocol; or an indication from a network node associated with the first component carrier or the second component carrier.

[0155] Aspect 5: A method according to any one of Aspects 1 to 4, wherein the initial frequency error correction is at least partially based on a frequency error of the first component carrier during the third time period, and the frequency error is at least partially based on one or more of the following: communication via the first component carrier and communication via the second component carrier using the same receive chain or transmit chain; or the first component carrier and the second component carrier are in the same frequency range.

[0156] Aspect 6: A method according to any one of Aspects 1 to 5, wherein the initial frequency error correction is at least partially based on the frequency error of the first component carrier during the third time period, including: the initial frequency error correction is substantially equal to the frequency error correction of the first component carrier, and the frequency error correction of the first component carrier is at least partially based on the frequency error of the first component carrier at the end of the third time period.

[0157] Aspect 7: A method according to any one of Aspects 1 to 6, wherein the initial frequency error correction is at least partially based on the frequency error of the first component carrier during the third time period, including: the initial frequency error correction is at least partially based on: the frequency error of the second component carrier at the end of the second time period; and the change in the frequency error of the first component carrier during the third time period.

[0158] Aspect 8: A method according to any one of Aspects 1 to 7, wherein the initial frequency error correction is at least partially based on the frequency error of the first component carrier during the third time period, including: the initial frequency error correction is at least partially based on: the frequency error of the first component carrier at the end of the third time period; and the difference between the frequency error of the second component carrier during the second time period and the frequency error of the first component carrier during the second time period.

[0159] Aspect 9: The method according to any one of aspects 1 to 8, wherein the second component carrier comprises a secondary component carrier.

[0160] Aspect 10: The method according to any one of aspects 1 to 9, wherein communicating via the second component carrier during the fourth time period comprises: sending communications using the initial frequency error correction; or receiving communications using the initial frequency error correction.

[0161] Aspect 11: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 10.

[0162] Aspect 12: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 1 to 10.

[0163] Aspect 13: An apparatus for wireless communication, the apparatus comprising at least one means for performing the method according to one or more of aspects 1 to 10.

[0164] Aspect 14: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 10.

[0165] Aspect 15: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 10.

[0166] In some aspects, after an inactive period of a component carrier, the UE may identify an initial frequency error correction based at least in part on measurements of reference signals during the inactive period. For example, the UE may maintain activity on a primary component carrier (PCell) during an inactive period of a secondary component carrier (SCell), where the inactive period is after an active period of the SCell. The UE may use frequency error correction during an active period of the SCell. Rather than using the most recent frequency error correction (e.g., from the active period of the SCell) to identify an initial frequency error correction when reactivating the SCell, the UE may estimate the frequency error using measurements of the reference signals during the inactive period.

[0167] In some aspects, the reference signal may include a synchronization signal block (SSB) associated with the SCell. In some aspects, the UE may receive the SSB at a different periodicity than the periodicity at which the SSB is received during the active period. For example, the UE may receive the SSB during the inactive period at a longer periodicity than the periodicity at which the SSB is received during the active period. In this way, the UE may save power resources during the inactive period.

[0168] In some aspects, the UE may estimate a frequency error of the SCell based on a reference signal. In some aspects, the UE may identify an initial frequency error correction based on the estimate of the frequency error. In some aspects, the UE may identify an initial frequency error correction based at least in part on the frequency error during the active period, wherein the adjustment is based at least in part on a change in the frequency error identified based on the reference signal.

[0169] Fig.10 is a diagram of an example 1000 associated with frequency error correction according to the present disclosure. Fig.10As shown, a network node (e.g., network node 110, CU, DU, and / or RU) may communicate with a UE (e.g., UE 120). In some aspects, the network node and the UE may be part of a wireless network (e.g., wireless network 100). The UE and the network node may be in Fig.10 The illustrated operations are preceded by establishing a wireless connection. In some aspects, the wireless connection may support carrier aggregation and / or other multi-carrier communications.

[0170] As indicated by reference numeral 1005, the network node may send configuration information, and the UE may receive the configuration information. In some aspects, the UE may receive the configuration information via one or more of RRC signaling, one or more medium access control (MAC) control elements (CEs), and / or DCI, etc. In some aspects, the configuration information may include an indication of one or more configuration parameters for the UE to select (e.g., known to the UE and / or previously indicated by the network node or other network device) and / or explicit configuration information for the UE to configure the UE, etc.

[0171] In some aspects, the configuration information may indicate that the UE will communicate via a first component carrier (e.g., PCC) and / or a second component carrier (e.g., SCC). In some aspects, the configuration information may indicate a configuration of the first component carrier and the second component carrier, such as a search space for receiving control messages, a configuration for activating and / or deactivating the second component carrier, and / or a bandwidth part (BWP) of the first component carrier and the second component carrier.

[0172] The UE may configure itself based at least in part on the configuration information.In some aspects, the UE may be configured to perform one or more operations described herein based at least in part on the configuration information.

[0173] As indicated by reference numeral 1010, the UE and the network node may communicate via a first component carrier. For example, the UE may send uplink communications to the network node and / or receive downlink communications from the network node via the first component carrier during a first time period. In some aspects, the communications via the first component carrier may include communications having relatively high reliability requirements. In some aspects, the communications via the first component carrier may have relatively low bandwidth requirements.

[0174] As indicated by reference numeral 1015, the UE and the network node may communicate via the first component carrier and via the second component carrier. For example, the UE may send uplink communications to the network node and / or receive downlink communications from the network node via the first component carrier and via the second component carrier during the second time period. In some aspects, the first component carrier may be a primary component carrier and the second component carrier may be a secondary component carrier.

[0175] In some aspects, the UE may communicate via the second component carrier in addition to the first component carrier based at least in part on receiving the indication to activate the second component carrier. In some aspects, the network node may send the indication to activate the second component carrier based at least in part on a determination to increase bandwidth for communications and / or conserve resources of the first component carrier, and the UE may receive the indication to activate the second component carrier, etc. For example, the UE may receive the indication to activate the second component carrier as a downlink component carrier during the second time period based at least in part on the second time period being associated with a relatively high amount of downlink data.

[0176] In some aspects, the UE may receive one or more SSBs via the second component carrier during the second time period. For example, the UE may receive one or more SSBs having a periodicity associated with the second component carrier that is active for the UE.

[0177] As indicated by reference numeral 1020, the UE may receive and the network node may send an indication to deactivate the second component carrier within a third time period (also referred to as an "inactive period"). In some aspects, the indication may include dynamic signaling, such as a MAC layer indication or a DCI. In some aspects, the indication to deactivate the second component carrier may not indicate a release of the configuration of the second component carrier. In this way, the UE may be able to reactivate the second component carrier without receiving a new configuration for the second component carrier. In some aspects, the UE may receive an indication to deactivate the second component carrier based at least in part on a change in one or more communication parameters.

[0178] As indicated by reference numeral 1025, during the inactive period, the UE may receive one or more reference signals via the second component carrier, and the network node may send one or more reference signals via the second component carrier. In some aspects, the one or more reference signals may include one or more SSBs. In some aspects, the one or more reference signals may be periodic reference signals. In some aspects, during the second time period (e.g., the active period of the second component carrier), the periodicity of the one or more reference signals may be longer (e.g., lower frequency) than reference signals of the same type. In some aspects, the UE may measure a frequency error of the second component carrier during the inactive period based at least in part on the one or more reference signals.

[0179] In some aspects, the UE and the network node may communicate via the first component carrier during a third time period after deactivating the second component carrier. In some aspects, the communication via the first component carrier may include communication with relatively low bandwidth requirements such that the second component carrier is not necessary for the communication. For example, the UE may suspend a connection associated with a relatively high amount of downlink data or uplink data (e.g., video streaming).

[0180] As indicated by reference numeral 1030, the UE may receive an indication to activate the second component carrier. In some aspects, the indication may include dynamic signaling, such as a MAC layer indication or a DCI. In some aspects, the UE may receive the indication to activate the second component carrier based at least in part on a change in one or more communication parameters. For example, the UE may receive the indication to activate the second component carrier based at least in part on an increase in the amount of data and / or load on the first component carrier, etc.

[0181] As indicated by reference numeral 1035, the UE may determine whether one or more frequency error change metrics have been satisfied. In some aspects, the one or more frequency error change metrics include a third time period satisfying a duration threshold. For example, the UE may determine that the one or more frequency error change metrics are satisfied based at least in part on the amount of time that the third time period extends the duration threshold (e.g., as long as or longer than the duration threshold). Additionally or alternatively, the UE may determine that the one or more frequency error change metrics are satisfied based at least in part on measurements of one or more reference signals, based at least in part on a frequency error change of the second component carrier during the third time period satisfying the frequency error change threshold. In some aspects, the UE may determine that the one or more frequency error change metrics are satisfied based at least in part on a temperature change during the third time period satisfying a temperature change threshold.

[0182] In some aspects, the duration threshold, frequency error change threshold and / or temperature change threshold are based at least in part on the UE's capabilities (e.g., error correction capabilities), communication protocols and / or instructions from a network node (e.g., received in conjunction with the configuration information described in conjunction with reference numeral 1005), etc.

[0183] As shown in reference numeral 1040, the UE may configure an initial frequency error correction for the second component carrier, the initial frequency error correction being based at least in part on one or more reference signals. For example, the UE may estimate the frequency error as an absolute frequency error using the one or more reference signals. In some aspects, the UE may measure the one or more reference signals to identify a change in frequency error during an inactive period (e.g., during a third time period). The UE may then use the identified change in frequency error during the inactive period to adjust the frequency error and / or frequency error correction associated with an active period prior to the inactive period. In some aspects, one or more reference signals of the second component carrier (e.g., a frequency error measured at least in part based on the one or more reference signals) may be a basis for configuring an initial frequency error correction for the second component carrier during a fourth time period associated with the reactivation of the second component carrier based at least in part on the frequency error change metric described in conjunction with reference numeral 1035.

[0184] As indicated by reference numeral 1045, the UE and the network node may communicate via the first component carrier and the second component carrier using the initial frequency error correction for the second component carrier. For example, the UE may send communications using the initial frequency error correction and / or receive communications using the initial frequency error correction.

[0185] In some aspects, the first time period may be defined as a time period including the UE communicating via at least the first component carrier. For example, communicating in conjunction with reference numerals 1010, 1015, 1025, 1030 and / or 1045 may be a first time period. Communicating in conjunction with reference numeral 1015 may be defined as a second time period that at least partially overlaps with the first time period (e.g., the second time period includes the time when the UE communicates via the second component carrier, and at least partially overlaps with the first time period when the UE communicates via the first component carrier). The third time period may be defined as a time period when the second component carrier is inactive and the UE continues to communicate via the first component carrier. For example, the third time period may be after the second time period and at least partially overlap with the first time period. The fourth time period may be defined as a time period when the second component carrier is active (e.g., after the third time period) and the UE continues to communicate via the first component carrier. The fourth time period overlaps at least partially with the first time period.

[0186] Based at least in part on an initial frequency error of the UE's use of the component carrier, the initial frequency error being based at least in part on measurements of one or more reference signals received via the second component carrier during an inactive period of the second component carrier, when resuming communications, the UE may have improved accuracy in correcting the frequency error of the second component carrier. This may reduce communication errors that may otherwise consume power, computational, network, and / or communication resources to detect and correct, and / or may enable the UE to avoid discarding the second component carrier. Based at least in part on avoiding discarding the second component carrier, the UE may communicate with the network node with improved efficiency, improved latency, and / or reduced consumption of scarce resources of the first component carrier.

[0187] As indicated above, Fig.10 are provided as examples. Other examples can be found in relation to Fig.10 Different than described.

[0188] Fig.11 is a diagram illustrating an example process 1100 performed, for example, by a UE in accordance with the present disclosure. Example process 1100 is an example of a UE (eg, UE 120) performing operations associated with techniques for frequency error correction.

[0189] like Fig.11As shown, in some aspects, process 1100 may include communicating via a first component carrier during a first time period (block 1110). Fig.12 The receiving component 1202, the sending component 1204, and / or the communication manager 1206 depicted in FIG. 1 may communicate via the first component carrier during the first time period, as described above.

[0190] like Fig.11 As further shown, in some aspects, process 1100 may include communicating via a second component carrier during a second time period that at least partially overlaps with the first time period (block 1120). Fig.12 The receiving component 1202, sending component 1204, and / or communication manager 1206 depicted in FIG. 1 may communicate via a second component carrier during a second time period that at least partially overlaps with the first time period, as described above.

[0191] like Fig.11 As further shown, in some aspects, process 1100 may include receiving a first indication to deactivate a second component carrier during a third time period that is subsequent to the second time period and at least partially overlaps with the first time period (block 1130). Fig.12 The receiving component 1202 and / or the communication manager 1206 depicted in FIG. 1 may receive a first indication to deactivate a second component carrier during a third time period that is subsequent to the second time period and at least partially overlaps with the first time period, as described above.

[0192] like Fig.11 As further shown, in some aspects, process 1100 may include receiving one or more reference signals during a third time period (block 1140). Fig.12 The receiving component 1202 and / or the communication manager 1206 depicted in FIG. 1 may receive one or more reference signals during the third time period, as described above.

[0193] like Fig.11 As further shown, in some aspects, process 1100 may include receiving a second indication to activate a second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period (block 1150). Fig.12 The receiving component 1202 and / or the communication manager 1206 depicted in FIG. 1 may receive a second indication to activate a second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period, as described above.

[0194] like Fig.11As further shown, in some aspects, process 1100 may include communicating via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on one or more reference signals received during the third time period (block 1160). Fig.12 The receiving component 1202, the sending component 1204 and / or the communication manager 1206 depicted in the figure may be based at least in part on an initial frequency error correction at the beginning of a fourth time period during which communication is performed via the second component carrier, and the initial frequency error correction is at least in part based on one or more reference signals received during the third time period, as described above.

[0195] Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0196] In a first aspect, the one or more reference signals include one or more SSBs.

[0197] In a second aspect, either alone or in combination with the first aspect, process 1100 includes receiving a set of reference signals with a first periodicity during the second time period, wherein receiving the one or more reference signals during the third time period includes: receiving the one or more reference signals with a second periodicity during the third time period, wherein the first periodicity is shorter than the second periodicity.

[0198] In a third aspect, either alone or in combination with one or more of the first and second aspects, the initial frequency error correction is based at least in part on the one or more reference signals received during the third time period, the one or more reference signals being based at least in part on satisfying one or more frequency error change metrics.

[0199] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the one or more frequency error change metrics include one or more of the following: the third time period satisfies a duration threshold; the frequency error change of the second component carrier during the third time period satisfies a frequency error change threshold, as measured via the one or more reference signals; or the temperature change during the third time period satisfies a temperature change threshold.

[0200] In a fifth aspect, either alone or in combination with one or more of the first to fourth aspects, one or more of the duration threshold, the frequency error change threshold or the temperature change threshold is based at least in part on one or more of: the capabilities of the UE; a communication protocol; or an indication from a network node associated with the first component carrier or the second component carrier.

[0201] In the sixth aspect, alone or in combination with one or more aspects of the first to fifth aspects, the initial frequency error correction is at least partially based on the one or more reference signals received during the third time period, including: the initial frequency error correction is at least partially based on: the frequency error of the second component carrier at the end of the second time period; and the frequency error change of the second component carrier during the third time period, as measured via the one or more reference signals.

[0202] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the second component carrier includes a secondary component carrier.

[0203] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the communication via the second component carrier during the fourth time period includes: sending communication using the initial frequency error correction; or receiving communication using the initial frequency error correction.

[0204] although Fig.11 An example block diagram of process 1100 is shown, but in some aspects, process 1100 may include Fig.11 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1100. Additionally or alternatively, two or more blocks of the blocks of process 1100 may be performed in parallel.

[0205] Fig.12 1 is a diagram of an example apparatus 1200 for wireless communication according to the present disclosure. Apparatus 1200 may be a UE, or a UE may include apparatus 1200. In some aspects, apparatus 1200 includes a receiving component 1202, a sending component 1204, and / or a communication manager 1206, which may communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1206 is a communication manager that is configured to communicate with each other. Figure 1 The described communication manager 140. As shown, the device 1200 can communicate with another device 1208, such as a UE or a network node (such as a CU, DU, RU, or base station), using a receiving component 1202 and a sending component 1204.

[0206] In some aspects, the apparatus 1200 may be configured to perform Fig.10 Additionally or alternatively, the apparatus 1200 may be configured to perform one or more of the processes described herein, such as Fig.11 In some aspects, the apparatus 1200 and / or Fig.12 One or more of the components shown may include a combination of Figure 2 Additionally or alternatively, Fig.12 One or more of the components shown may be combined with Figure 2 Additionally or alternatively, one or more components in the component set may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and can be executed by a controller or processor to perform the function or operation of the component.

[0207] The receiving component 1202 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1208. The receiving component 1202 may provide the received communications to one or more other components of the device 1200. In some aspects, the receiving component 1202 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding) on ​​the received communications and may provide the processed signals to one or more other components of the device 1200. In some aspects, the receiving component 1202 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0208] The transmitting component 1204 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1208. In some aspects, one or more other components of the device 1200 may generate communications and may provide the generated communications to the transmitting component 1204 for transmission to the device 1208. In some aspects, the transmitting component 1204 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1208. In some aspects, the transmitting component 1204 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmit component 1204 can be co-located with the receive component 1202 in a transceiver.

[0209] The communications manager 1206 can support the operations of the receiving component 1202 and / or the sending component 1204. For example, the communications manager 1206 can receive information associated with configuring the receipt of communications by the receiving component 1202 and / or the sending of communications by the sending component 1204. Additionally or alternatively, the communications manager 1206 can generate and / or provide control information to the receiving component 1202 and / or the sending component 1204 to control the receipt and / or sending of communications.

[0210] The receiving component 1202 and / or the transmitting component 1204 may communicate via the first component carrier during a first time period. The receiving component 1202 and / or the transmitting component 1204 may communicate via the second component carrier during a second time period, the second time period at least partially overlapping the first time period. The receiving component 1202 may receive a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping the first time period. The receiving component 1202 may receive one or more reference signals during the third time period. The receiving component 1202 may receive a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period. The receiving component 1202 and / or the transmitting component 1204 may communicate via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on one or more reference signals received during the third time period.

[0211] The receiving component 1202 may receive a set of reference signals at a first periodicity during a second time period, wherein receiving one or more reference signals during a third time period includes receiving one or more reference signals at a second periodicity during the third time period, wherein the first periodicity is shorter than the second periodicity.

[0212] Fig.12 The number and arrangement of components shown are provided as examples. In practice, there may be Fig.12 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig.12 Two or more components shown may be implemented in a single component, or Fig.12 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.12 The component set (one or more components) shown may be described as being executable by Fig.12 Another component shown is a collection of one or more functions performed.

[0213] The following provides an overview of some aspects of the disclosure:

[0214] Aspect 1: A method for performing wireless communications by a user equipment (UE), the method comprising: communicating via a first component carrier during a first time period; communicating via a second component carrier during a second time period, the second time period at least partially overlapping with the first time period; receiving a first indication to deactivate the second component carrier during a third time period, the third time period being after the second time period and at least partially overlapping with the first time period; receiving one or more reference signals during the third time period; receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being after the third time period; and communicating via the second component carrier during the fourth time period based at least in part on an initial frequency error correction at the start of the fourth time period, the initial frequency error correction being based at least in part on the one or more reference signals received during the third time period.

[0215] Aspect 2: The method according to aspect 1, wherein the one or more reference signals include one or more synchronization signal blocks (SSBs).

[0216] Aspect 3: According to the method described in any one of Aspects 1 to 2, the method further includes: receiving a reference signal set with a first periodicity during the second time period, wherein receiving the one or more reference signals during the third time period includes: receiving the one or more reference signals with a second periodicity during the third time period, wherein the first periodicity is shorter than the second periodicity.

[0217] Aspect 4: A method according to any one of Aspects 1 to 3, wherein the initial frequency error correction is at least partially based on the one or more reference signals received during the third time period, and the one or more reference signals are at least partially based on satisfying one or more frequency error change metrics.

[0218] Aspect 5: A method according to Aspect 4, wherein the one or more frequency error change metrics include one or more of the following: the third time period satisfies a duration threshold; the frequency error change of the second component carrier during the third time period satisfies a frequency error change threshold, as measured via the one or more reference signals; or the temperature change during the third time period satisfies a temperature change threshold.

[0219] Aspect 6: A method according to Aspect 5, wherein one or more of the duration threshold, the frequency error change threshold, or the temperature change threshold is based at least in part on one or more of: the capabilities of the UE; a communication protocol; or an indication from a network node associated with the first component carrier or the second component carrier.

[0220] Aspect 7: A method according to any one of Aspects 1 to 6, wherein the initial frequency error correction is at least partially based on the one or more reference signals received during the third time period, including: the initial frequency error correction is at least partially based on: the frequency error of the second component carrier at the end of the second time period; and the change in the frequency error of the second component carrier during the third time period, as measured via the one or more reference signals.

[0221] Aspect 8: The method according to any one of aspects 1 to 7, wherein the second component carrier comprises a secondary component carrier.

[0222] Aspect 9: The method according to any one of aspects 1 to 8, wherein the communication via the second component carrier during the fourth time period includes: sending communication using the initial frequency error correction; or receiving communication using the initial frequency error correction.

[0223] Aspect 10: An apparatus for performing wireless communications at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform one or more of the methods described in Aspects 1 to 9.

[0224] Aspect 11: A device for wireless communication, the device comprising: a memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to execute the method according to one or more of aspects 1 to 9.

[0225] Aspect 12: An apparatus for wireless communication, the apparatus comprising at least one means for performing the method according to one or more of aspects 1 to 9.

[0226] Aspect 13: A non-transitory computer-readable medium storing a code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 9.

[0227] Aspect 14: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions which, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 9.

[0228] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0229] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "software" should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures and / or functions, etc. As used herein, a "processor" is implemented in hardware and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by different forms of hardware and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, no reference is made to specific software codes herein to describe the operation and behavior of the systems and / or methods, because those skilled in the art will understand that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0230] As used herein, "satisfying a threshold" may mean a value is greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0231] Although the specific combination of features is set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features can be combined in a manner that is not specifically described in the claims and / or is not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, the phrase "at least one of" the list of items refers to any combination of these items (it includes a single member). As an example, "at least one of a, b or c" is intended to cover a, b, c, a+b, a+c, b+c and a+b+c, and any combination with multiple identical elements (for example, a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c and c+c+c, or any other ordering of a, b and c).

[0232] Any element, action or instruction used herein should not be interpreted as key or necessary, unless explicitly stated. In addition, as used herein, the article "one" is intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more items connected to the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more items, and can be used interchangeably with "one or more". If only one item is intended to be referred to, the phrase "only one" or similar terms will be used. Moreover, as used herein, the terms "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "elements with" A can also have B). In addition, the phrase "based on" is intended to represent "based at least in part on", unless explicitly stated otherwise. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless explicitly stated otherwise (eg, if used in conjunction with "either" or "only one of").

Claims

1. A method for performing wireless communication by a user equipment (UE), the method comprising: communicating via a first component carrier during a first time period; communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period; receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping with the first time period; receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period; as well as Communicating via the second component carrier during the fourth time period is based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

2. The method of claim 1, wherein the initial frequency error correction is based at least in part on the frequency error of the first component carrier during the third time period, the frequency error being based at least in part on satisfying one or more frequency error change metrics.

3. The method of claim 2, wherein the one or more frequency error change metrics include one or more of: The third time period satisfies a duration threshold; A frequency error change of the first component carrier during the third time period satisfies a frequency error change threshold; or The temperature change during the third time period satisfies a temperature change threshold.

4. The method of claim 3, wherein one or more of the duration threshold, the frequency error change threshold, or the temperature change threshold is based at least in part on one or more of: The capabilities of the UE; Communications protocol; or An indication from a network node associated with the first component carrier or the second component carrier.

5. The method of claim 1 , wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period, the frequency error being based at least in part on one or more of: communications via the first component carrier and communications via the second component carrier using the same receive chain or transmit chain; or The first component carrier and the second component carrier are in the same frequency range.

6. The method of claim 1 , wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period and comprises: The initial frequency error correction is substantially equal to a frequency error correction of the first component carrier, the frequency error correction of the first component carrier being based at least in part on the frequency error of the first component carrier at an end of the third time period.

7. The method of claim 1 , wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period and comprises: The initial frequency error correction is based at least in part on: a frequency error of the second component carrier at the end of the second time period; and The frequency error of the first component carrier changes during the third time period.

8. The method of claim 1 , wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period and comprises: The initial frequency error correction is based at least in part on: the frequency error of the first component carrier at the end of the third time period; and A difference between a frequency error of the second component carrier during the second time period and a frequency error of the first component carrier during the second time period.

9. The method of claim 1, wherein the second component carrier comprises a secondary component carrier.

10. The method of claim 1, wherein communicating via the second component carrier during the fourth time period comprises: sending a communication using said initial frequency error correction; or Communications are received using the initial frequency error correction.

11. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: Memory; and one or more processors coupled to the memory and configured to: communicating via a first component carrier during a first time period; communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period; receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping with the first time period; receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period; as well as Communicating via the second component carrier during the fourth time period is based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

12. The UE of claim 11, wherein the initial frequency error correction is based at least in part on the frequency error of the first component carrier during the third time period, the frequency error being based at least in part on satisfying one or more frequency error change metrics.

13. The UE of claim 12, wherein the one or more frequency error variation metrics include one or more of the following: The third time period satisfies a duration threshold; A frequency error change of the first component carrier during the third time period satisfies a frequency error change threshold; or The temperature change during the third time period satisfies a temperature change threshold.

14. The UE of claim 13, wherein one or more of the duration threshold, the frequency error change threshold, or the temperature change threshold is based at least in part on one or more of: The capabilities of the UE; Communications protocol; or An indication from a network node associated with the first component carrier or the second component carrier.

15. The UE of claim 11, wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period, the frequency error being based at least in part on one or more of: communications via the first component carrier and communications via the second component carrier using the same receive chain; or The first component carrier and the second component carrier are in the same frequency range.

16. The UE of claim 11, wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period and comprises: The initial frequency error correction is substantially equal to a frequency error correction of the first component carrier, the frequency error correction of the first component carrier being based at least in part on the frequency error of the first component carrier at an end of the third time period.

17. The UE of claim 11, wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period and comprises: The initial frequency error correction is based at least in part on: a frequency error of the second component carrier at the end of the second time period; and The frequency error of the first component carrier changes during the third time period.

18. The UE of claim 11, wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period and comprises: The initial frequency error correction is based at least in part on: the frequency error of the first component carrier at the end of the third time period; and A difference between a frequency error of the second component carrier during the second time period and a frequency error of the first component carrier during the second time period.

19. The UE of claim 11, wherein the second component carrier comprises a secondary component carrier.

20. The UE of claim 11, wherein to communicate via the second component carrier during the fourth time period, the one or more processors are configured to: Sending a communication using said initial frequency error correction; or Communications are received using the initial frequency error correction.

21. A non-transitory computer readable medium storing a set of instructions for wireless communication, the set of instructions comprising: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: communicating via a first component carrier during a first time period; communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period; receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping with the first time period; receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period; as well as Communicating via the second component carrier during the fourth time period is based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

22. The non-transitory computer readable medium of claim 21, wherein the initial frequency error correction is based at least in part on the frequency error of the first component carrier during the third time period, the frequency error being based at least in part on satisfying one or more frequency error change metrics.

23. The non-transitory computer readable medium of claim 22, wherein the one or more frequency error variation metrics include: The third time period satisfies a duration threshold; A frequency error change of the first component carrier during the third time period satisfies a frequency error change threshold; or The temperature change during the third time period satisfies a temperature change threshold.

24. The non-transitory computer readable medium of claim 21, wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period, the frequency error being based at least in part on one or more of: communications via the first component carrier and communications via the second component carrier using the same receive chain; or The first component carrier and the second component carrier are in the same frequency range.

25. The non-transitory computer readable medium of claim 21 , wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period and comprises: The initial frequency error correction is substantially equal to a frequency error correction of the first component carrier, the frequency error correction of the first component carrier being based at least in part on the frequency error of the first component carrier at an end of the third time period.

26. An apparatus for wireless communication, the apparatus comprising: means for communicating via a first component carrier during a first time period; means for communicating via a second component carrier during a second time period, the second time period at least partially overlapping the first time period; means for receiving a first indication to deactivate the second component carrier during a third time period, the third time period being subsequent to the second time period and at least partially overlapping with the first time period; means for receiving a second indication to activate the second component carrier for communication during a fourth time period, the fourth time period being subsequent to the third time period; and means for communicating via the second component carrier during the fourth time period based at least in part on using an initial frequency error correction at the beginning of the fourth time period, the initial frequency error correction being based at least in part on a frequency error of the first component carrier during the third time period.

27. The apparatus of claim 26, wherein the initial frequency error correction is based at least in part on the frequency error of the first component carrier during the third time period, the frequency error being based at least in part on satisfying one or more frequency error change metrics.

28. The apparatus of claim 27, wherein the one or more frequency error variation metrics include: The third time period satisfies a duration threshold; A frequency error change of the first component carrier during the third time period satisfies a frequency error change threshold; or The temperature change during the third time period satisfies a temperature change threshold.

29. The apparatus of claim 26, wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period, the frequency error being based at least in part on one or more of: communications via the first component carrier and communications via the second component carrier using the same receive chain; or The first component carrier and the second component carrier are in the same frequency range.

30. The apparatus of claim 26, wherein the initial frequency error correction is based at least in part on a frequency error of the first component carrier during the third time period and comprises: The initial frequency error correction is substantially equal to a frequency error correction of the first component carrier, the frequency error correction of the first component carrier being based at least in part on the frequency error of the first component carrier at an end of the third time period.

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