Communicating using cross-carrier configuration after serving cell change

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell that is a serving cell. The UE may receive an indication that the serving cell will change from the second cell to a third cell associated with a third cell identifier. The UE may communicate according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell. Numerous other aspects are described.

Description

Background Art

[0001] Aspects of the present disclosure relate generally to wireless communications and techniques and apparatus for communicating using cross-carrier configurations.

[0002] Wireless communication systems are widely deployed to provide various telecommunication services, such as telephone, 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).

[0003] 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. The UE may communicate with the 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.).

[0004] The above 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 better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards by using orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) (CP-OFDM) on the downlink, 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, as well as supporting beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation. 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

[0005] Some aspects described herein relate to a method of wireless communication performed at a user equipment (UE). The method may include receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The method may include receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The method may include communicating according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell.

[0006] Some aspects described herein relate to a method of wireless communication performed at a UE. The method may include receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The method may include receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The method may include communicating in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0007] Some aspects described herein relate to a method of wireless communication performed at a UE. The method may include receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The method may include receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The method may include, in response to the indication, communicating independently of the configuration.

[0008] Some aspects described herein relate to a method of wireless communication performed at a network node. The method may include sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The method may include sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The method may include communicating according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell.

[0009] Some aspects described herein relate to a method of wireless communication performed at a network node. The method may include sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The method may include sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The method may include communicating in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0010] Some aspects described herein relate to a method of wireless communication performed at a network node. The method may include sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The method may include sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The method may include, in response to the indication, communicating independently of the configuration.

[0011] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to obtain information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The one or more processors may be configured to obtain an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The one or more processors may be configured to communicate according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell.

[0012] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to obtain information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The one or more processors may be configured to obtain an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The one or more processors may be configured to communicate according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0013] Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to obtain information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The one or more processors may be configured to obtain an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The one or more processors may be configured to communicate independently of the configuration in response to the indication.

[0014] Some aspects described herein relate to an apparatus for wireless communication at a network node. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to provide information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The one or more processors may be configured to provide an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The one or more processors may be configured to communicate according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell.

[0015] Some aspects described herein relate to an apparatus for wireless communication at a network node. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to provide information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The one or more processors may be configured to provide an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The one or more processors may be configured to communicate according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0016] Some aspects described herein relate to an apparatus for wireless communication at a network node. The apparatus may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to provide information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The one or more processors may be configured to provide an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The one or more processors may be configured to communicate independently of the configuration in response to the indication.

[0017] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to: receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The instruction set, when executed by one or more processors of the UE, may cause the UE to: receive an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The instruction set, when executed by one or more processors of the UE, may cause the UE to: communicate according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell.

[0018] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to: receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The instruction set, when executed by one or more processors of the UE, may cause the UE to: receive an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The instruction set, when executed by one or more processors of the UE, may cause the UE to: communicate according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0019] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to: receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The instruction set, when executed by one or more processors of the UE, may cause the UE to: receive an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The instruction set, when executed by one or more processors of the UE, may cause the UE to: communicate independently of the configuration in response to the indication.

[0020] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a network node. The set of instructions, when executed by one or more processors of the network node, may cause the network node to: send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The set of instructions, when executed by one or more processors of the network node, may cause the network node to: send an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The set of instructions, when executed by one or more processors of the network node, may cause the network node to: communicate according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell.

[0021] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a network node. The set of instructions, when executed by one or more processors of the network node, may cause the network node to: send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The set of instructions, when executed by one or more processors of the network node, may cause the network node to: send an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The set of instructions, when executed by one or more processors of the network node, may cause the network node to: communicate according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0022] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network node. The instruction set, when executed by one or more processors of the network node, may cause the network node to: send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The instruction set, when executed by one or more processors of the network node, may cause the network node to: send an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. The instruction set, when executed by one or more processors of the network node, may cause the network node to: communicate independently of the configuration in response to the indication.

[0023] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: means for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The apparatus may include: means for receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The apparatus may include: means for communicating according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell.

[0024] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: means for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The apparatus may include: means for receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The apparatus may include: means for communicating in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0025] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include: means for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The apparatus may include: means for receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The apparatus may include: means for communicating independently of the configuration in response to the indication.

[0026] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The apparatus may include means for sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The apparatus may include means for communicating according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell.

[0027] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The apparatus may include means for sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The apparatus may include means for communicating in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0028] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The apparatus may include means for sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier. The apparatus may include means for communicating, in response to the indication, independent of the configuration.

[0029] The various aspects generally include methods, apparatuses, 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 with reference to the accompanying drawings and the specification and as illustrated in the accompanying drawings and the specification.

[0030] The features and technical advantages of examples according to the present disclosure have been outlined quite extensively above so that the following specific embodiments may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may 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. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and methods of operation) and the associated advantages will be better understood according to the following description. Each of the drawings is provided for illustration and description purposes only and is not intended to be used as a definition of the limitations of the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] 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.

[0032] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0033] 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.

[0034] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0035] 4A to 4D is a diagram illustrating an example associated with communicating using a cross-carrier configuration after a serving cell change according to the present disclosure.

[0036] Figure 5 is a diagram of an example associated with communicating using a cross-carrier configuration after a serving cell change according to the present disclosure.

[0037] Figures 6 to 11 is a diagram illustrating an example process associated with communicating using a cross-carrier configuration after a serving cell change according to the present disclosure.

[0038] Fig.12 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0039] Fig.13 is a diagram illustrating an example of a hardware implementation for an apparatus employing a processing system according to the present disclosure.

[0040] Fig.14 is a diagram illustrating an example of a specific implementation of code and circuits for an apparatus according to the present disclosure.

[0041] Fig.15 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0042] Fig.16 is a diagram illustrating an example of a hardware implementation for an apparatus employing a processing system according to the present disclosure.

[0043] Fig.17is a diagram illustrating an example of a specific implementation of code and circuits for an apparatus according to the present disclosure. DETAILED DESCRIPTION

[0044] "Carrier" may refer to a range of frequencies used for communication. In carrier aggregation, two or more carriers (which may be referred to as "component carriers" in the context of carrier aggregation) may be combined (e.g., into a single channel) to enhance data capacity for user equipment (UE). In carrier aggregation, a UE may be configured with a primary carrier or primary cell (PCell) and one or more secondary carriers or secondary cells (SCells). A "cell" may refer to a coverage area of ​​a network node and / or a network node subsystem serving the coverage area. PCell and SCell may be serving cells for a UE. A "serving cell" may refer to a cell in which a UE has an active connection (e.g., an active radio resource control (RRC) connection). In some examples, a primary carrier may carry control information (e.g., downlink control information (DCI) and / or scheduling information) for scheduling data communications on one or more secondary carriers, and such scheduling may be referred to as "cross-carrier scheduling."

[0045] The UE may receive a configuration for a cell (e.g., SCell) from a network node, and the configuration may reference a serving cell (e.g., PCell) using a cell identifier. Such a configuration for one cell that references another cell may be referred to as a "cross-carrier configuration". After receiving the configuration, the UE may move to or beyond the edge of the coverage area of ​​the serving cell. This may cause the UE to receive an indication (e.g., a dynamic indication) from the network node to change from a serving cell (i.e., the original serving cell) to a new serving cell (e.g., a new serving cell associated with the coverage area entered by the UE). However, the UE may not receive an update to the configuration that references the cell identifier of the original serving cell while receiving an indication to change the serving cell to the new serving cell. In other words, according to one or more examples, when the UE receives an indication to change the serving cell to the new serving cell, the reference to the cell identifier in the configuration becomes invalid. Therefore, if the UE continues to communicate according to the configuration including the invalid reference, the performance of such communication may be affected.

[0046] Some techniques and apparatus described herein improve communication of a UE when the following occurs: the UE receives a cross-carrier configuration including a reference to a cell identifier of a serving cell from a network node, and the reference to the cell identifier becomes invalid due to the UE subsequently receiving an indication from the network node to change from the serving cell (i.e., the old serving cell) to a new serving cell. For example, as described above, the UE may receive the indication in response to the UE moving out of the coverage area of ​​the old serving cell and entering the coverage area of ​​the new serving cell. In some aspects, based at least in part on the cross-carrier configuration with the invalid reference to the cell identifier of the old serving cell, the UE may communicate according to the cross-carrier configuration by using the cell identifier of the old serving cell for the new serving cell and using the cell identifier of the new serving cell for the old serving cell (e.g., swapping the cell identifier of the old serving cell and the cell identifier of the new serving cell). In other words, according to one or more examples, in the absence of signaling from the network node to update the cross-carrier configuration, the UE may assume that the reference to the cell identifier of the old serving cell in the configuration is actually referencing the new serving cell. In this way, by assuming that the cross-carrier configuration is referencing the UE's current serving cell (rather than the UE's previous serving cell), the configuration remains valid, thereby improving the communication performance of the UE after changing from the old serving cell to the new serving cell.

[0047] In some aspects, based at least in part on a cross-carrier configuration having an invalid reference to a cell identifier of an old serving cell, the UE may communicate in accordance with the cross-carrier configuration by replacing the cell identifier of the old serving cell in the configuration with the cell identifier of the new serving cell. In other words, in the absence of signaling from a network node for updating the cross-carrier configuration, the UE may assume that the reference to the cell identifier of the old serving cell in the configuration is replaced with a reference to the cell identifier of the new serving cell. In this way, by assuming that the cross-carrier configuration is updated to reference the cell identifier of the UE's current serving cell (rather than the UE's previous serving cell), the configuration remains valid, thereby improving the communication performance of the UE after changing from the old serving cell to the new serving cell.

[0048] In some aspects, based at least in part on a cross-carrier configuration having an invalid reference to a cell identifier of an old serving cell, the UE may communicate independently of the cross-carrier configuration (e.g., with the configuration suspended) until the UE receives an update to the configuration. For example, the UE may use one or more default settings instead of one or more settings indicated by the cross-carrier configuration until the UE receives an update to the configuration. In this way, the outdated reference in the cross-carrier configuration does not adversely affect the communication performance of the UE after changing from the old serving cell to the new serving cell.

[0049] 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. Instead, these aspects are provided so that the present disclosure will be thorough and complete, and the protection 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 present 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 implemented using other structures, functions, or structures and functions in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.

[0050] 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.

[0051] In some aspects, the term "receive" and its variations (e.g., "received" and / or "received", etc.) may alternatively be referred to as "obtain" or its respective variations (e.g., "obtained" and / or "obtained", etc.). Similarly, the term "send" and its variations (e.g., "send" and / or "sent", etc.) may alternatively be referred to as "provide" or its corresponding variations (e.g., "provide" and / or "provided", etc.), "generate" or its corresponding variations (e.g., "generate" and / or "generated", etc.), and / or "output" or its corresponding variations (e.g., "output" and / or "outputted", etc.).

[0052] Although various aspects may be described herein using terminology generally associated with 5G or new radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or post-5G RATs (e.g., 6G).

[0053] 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, among other examples. 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 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, 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)).

[0054] 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 a 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. For example, the network node 110 may include 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, midhaul, and / or backhaul interfaces (such as direct physical connections, air interfaces, or virtual networks) using any suitable transport network.

[0055] 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 micro 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 micro 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 micro cell may be referred to as a micro 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, 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. The network node may support one or more (e.g., three) cells. In some examples, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move according to the location of the mobile network node 110 (e.g., a mobile network node).

[0056] In some aspects, the term "base station" or "network node" may refer to a converged 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 the network node 110). In some aspects, the term "base station" or "network node" may refer to a plurality of 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.

[0057] 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, the like.

[0058] 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).

[0059] 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 the 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 or may include a CU or a core network device.

[0060] UE 120 can be distributed throughout the wireless network 100, and each UE 120 can be stationary or mobile. UE 120 can include, for example, an access terminal, a terminal, a mobile station and / or a subscriber unit. UE 120 can 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 or wired medium.

[0061] 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 that 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 in a housing that houses components of UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the 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 operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0062] 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.

[0063] 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) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. 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.

[0064] The electromagnetic spectrum is typically subdivided by frequency / wavelength into various categories, bands, channels, etc. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). It should be understood that, although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the “sub-6 GHz” band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the “millimeter wave” band in documents and articles, although distinct from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0065] 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 (7.125 GHz–24.25 GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus 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 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz–71 GHz), FR4 (52.6 GHz–114.25 GHz), and FR5 (114.25 GHz–300 GHz). Each of these higher frequency bands falls within the EHF band.

[0066] In view of the above examples, unless otherwise explicitly stated, it should be understood that if the term "below 6 GHz" or the like is used herein, the term can be broadly referred to as frequencies that can be below 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise explicitly stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term can be broadly referred to as frequencies that can include mid-band frequencies, can be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or can 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) can be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0067] In some aspects, UE 120 may include a communications manager 140. In some aspects, and as described in more detail elsewhere herein, communications manager 140 may: receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receive an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; and communicate in accordance with the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell. In some aspects, and as described in more detail elsewhere herein, communications manager 140 may: receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receive an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; and communicate in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier. In some aspects, and as described in more detail elsewhere herein, the communication manager 140 may: receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receive an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; and in response to the indication, communicate independently of the configuration. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0068] In some aspects, the network node 110 may include a communications manager 150. In some aspects, and as described in more detail elsewhere herein, the communications manager 150 may send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; send an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and communicate in accordance with the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell. In some aspects, and as described in more detail elsewhere herein, the communications manager 150 may send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; send an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and communicate in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier. In some aspects, and as described in more detail elsewhere herein, the communications manager 150 may send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; send an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and in response to the indication, communicate independently of the configuration. Additionally or alternatively, the communications manager 150 may perform one or more other operations described herein.

[0069] As indicated above, Figure 1 Other examples can be found in the Figure 1 The examples described are different.

[0070] Figure 2 2 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.

[0071] 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 partitioning 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., pre-coding) 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 modems) (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 further process (e.g., convert to analog, amplify, filter, and / or up-convert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a to 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a to 234t).

[0072] 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 a data sink 260, and may provide decoded control information and system information to a 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 284.

[0073] 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.

[0074] 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 (within a single housing or multiple housings), sets of coplanar antenna elements, sets of non-coplanar antenna elements, and / or 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.

[0075] 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 transmitted 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 aspects of any of the methods described herein.

[0076] 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 of the modem 232 shown as DEMOD), 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 an antenna 234, a modem 232, a MIMO detector 236, a receive processor 238, a transmit processor 220, and / or a TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein.

[0077] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other components of the network node 110 may perform one or more techniques associated with communicating using a cross-carrier configuration after a serving cell change, 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 6 The process of 600 Figure 7 The process 700 Figure 8 The process of 800 Fig. 9 The process of 900 Fig.10 The process of 1000 Fig.11 1100 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, 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), the one or more instructions may cause the one or more processors, UE 120 and / or network node 110 to perform or direct, for example, Figure 6 The process of 600 Figure 7 The process 700 Figure 8 The process of 800 Fig. 9 The process of 900 Fig.10 The process of 1000 Fig.11 The process 1100 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.

[0078] In some aspects, a UE (e.g., UE 120) includes: means for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; means for receiving an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and / or means for communicating in accordance with the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell. In some aspects, the UE includes: means for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; means for receiving an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and / or means for communicating in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier. In some aspects, the UE includes: means for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; means for receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; and / or means for communicating independently of the configuration in response to the indication. Means for the UE to perform operations described herein may include, for example, one or more of the following: communications 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.

[0079] In some aspects, a network node (e.g., network node 110) includes: means for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; means for sending an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and / or means for communicating in accordance with the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell. In some aspects, the network node includes: means for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; means for sending an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and / or means for communicating in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier. In some aspects, the network node includes: means for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; means for sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; and / or means for communicating independently of the configuration in response to the indication. In some aspects, means for the network node to perform operations described herein may include, for example, one or more of the communication manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0080] 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.

[0081] As indicated above, Figure 2 Other examples can be found in the Figure 2 The examples described are different.

[0082] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or parts 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 base station, 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 called an independent base station or a monolithic base station) or a decomposed base station. "Network entity" or "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).

[0083] 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, the 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 across one or more other network nodes. The DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and 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), etc.

[0084] 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.

[0085] Figure 33 is a diagram illustrating an example disaggregated base station architecture 300 according to the present disclosure. The disaggregated base station architecture 300 may include a CU 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more disaggregated 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.

[0086] 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 transmit 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 the units may include a wired interface and a wireless interface, the wired interface being configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium, and the wireless interface being configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium, or to perform both.

[0087] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include 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 the CU 310. The 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, the CU 310 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, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0088] Each DU 330 may correspond to a logical unit that includes 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 medium access control (MAC) layer, and one or more high physical (PHY) layers, at least in part according to a functional split, such as a functional split defined by 3GPP. In some aspects, the 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 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.

[0089] 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 communicating with the control plane and user plane of 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.

[0090] 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 390) 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.

[0091] The non-RT RIC 315 may be configured to include logic functions that implement 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 in communication 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 implement 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.

[0092] 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 regulate 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).

[0093] As indicated above, Figure 3 Other examples can be found in the Figure 3 The examples described are different.

[0094] 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 to enhance data capacity. Carriers in the same or different frequency bands may be combined. Additionally or alternatively, contiguous or non-contiguous carriers may be combined. A network node may configure carrier aggregation for a UE (such as in an RRC message, a DCI, and / or another signaling message).

[0095] In carrier aggregation, a UE may be configured with a primary carrier or PCell and one or more secondary carriers or SCells. The PCell and SCell may be serving cells for the UE. In some examples, a carrier may carry control information (e.g., DCI 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 examples, 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.

[0096] In layer (L1) / layer (L2) based mobility, L1 signaling and / or L2 signaling (e.g., via beam change signaling) may be used to indicate a change in a serving cell. L1 may refer to a PHY layer of a device, and L2 may refer to a MAC, RLC, and / or PDCP layer of a device. L1 signaling may include, for example, DCI, and L2 signaling may include, for example, a MAC control element (MAC-CE). Therefore, a dynamic switching mechanism between candidate serving cells (e.g., including special cells (SPCells) and SCells) may be based on L1 / L2 signaling. In some examples, in carrier aggregation, separate signaling may be used to indicate a PCell change and to indicate an SCell change. For example, PCell selection may be based on beam indication, and SCell selection may be based on L1 / L2 signaling.

[0097] UE 120 may be configured with a set of candidate PCells. In the absence of carrier aggregation (or dual connectivity), a single PCell may be selected for UE 120 from the configured set of candidate PCells. As UE 120 moves closer to another cell, UE 120 may receive an indication from network node 110 (e.g., based on L1 / L2 signaling) to change the PCell of UE 120 from the old PCell to the new PCell.

[0098] In carrier aggregation, the PCell change may include exchanging the PCell and the SCell between the configured candidate PCell set. For example, in carrier aggregation, the UE 120 may communicate using the PCell and one or more SCells. As the UE 120 moves closer to the SCell, the UE 120 may receive instructions from the network node 110 to change the SCell to a new PCell and change the PCell to a new SCell.

[0099] In L1 / L2-based mobility, UE 120 may receive a configuration associated with a cell from a network node, the configuration including a reference to a cell identifier associated with the switched cell. That is, the configuration may be a dependent cross-carrier configuration including a reference to a cell identifier. After the cell is switched, the configuration may no longer be valid, thus affecting the communication performance of UE 120.

[0100] Some techniques and apparatus described herein improve communication of a UE when the following occurs: the UE receives a cross-carrier configuration including a reference to a cell identifier of a serving cell from a network node, and the reference to the cell identifier becomes invalid due to the UE subsequently receiving an indication from the network node to change from the serving cell (i.e., the old serving cell) to a new serving cell. For example, as described above, the UE may receive the indication in response to the UE moving out of the coverage area of ​​the old serving cell and entering the coverage area of ​​the new serving cell. In some aspects, based at least in part on the cross-carrier configuration with the invalid reference to the cell identifier of the old serving cell, the UE may communicate according to the cross-carrier configuration by using the cell identifier of the old serving cell for the new serving cell and using the cell identifier of the new serving cell for the old serving cell (e.g., swapping the cell identifier of the old serving cell and the cell identifier of the new serving cell). In other words, in the absence of signaling from the network node to update the cross-carrier configuration, the UE may assume that the reference to the cell identifier of the old serving cell in the configuration is actually referencing the new serving cell. In this way, by assuming that the cross-carrier configuration is referencing the UE's current serving cell (rather than the UE's previous serving cell), the configuration remains valid, thereby improving the communication performance of the UE after changing from the old serving cell to the new serving cell.

[0101] In some aspects, based at least in part on a cross-carrier configuration having an invalid reference to a cell identifier of an old serving cell, the UE may communicate in accordance with the cross-carrier configuration by replacing the cell identifier of the old serving cell in the configuration with the cell identifier of the new serving cell. In other words, in the absence of signaling from a network node for updating the cross-carrier configuration, the UE may assume that the reference to the cell identifier of the old serving cell in the configuration is replaced with a reference to the cell identifier of the new serving cell. In this way, by assuming that the cross-carrier configuration is updated to reference the cell identifier of the UE's current serving cell (rather than the UE's previous serving cell), the configuration remains valid, thereby improving the communication performance of the UE after changing from the old serving cell to the new serving cell.

[0102] In some aspects, based at least in part on a cross-carrier configuration having an invalid reference to a cell identifier of an old serving cell, the UE may communicate independently of the cross-carrier configuration (e.g., with the configuration suspended) until the UE receives an update to the configuration. For example, the UE may use one or more default settings instead of one or more settings indicated by the cross-carrier configuration until the UE receives an update to the configuration. In this way, the invalid reference in the cross-carrier configuration does not adversely affect the communication performance of the UE after changing from the old serving cell to the new serving cell.

[0103] 4A to 4D is an illustration of an example 400 associated with communicating using a cross-carrier configuration after a serving cell change in accordance with the present disclosure.

[0104] 4A to 4D UE 120, a first cell 401, a second cell 402, and a third cell 403 are shown. UE 120 may be configured (e.g., by network node 110) with a candidate PCell set including first cell 401, second cell 402, and third cell 403. As shown, first cell 401 may be associated with a first cell identifier (1ID), second cell 402 may be associated with a second cell identifier (2ID), and third cell 403 may be associated with a third cell identifier (3ID). First cell 401, second cell 402, and third cell 403 may be implemented by one or more network nodes 110. First cell 401, second cell 402, and third cell 403 may be serving cells for UE 120. For example, in 4A to 4D Before the operations shown in , the first cell 401 and the third cell 403 may be the SCells of the UE 120 , and the second cell 402 may be the PCell of the UE 120 .

[0105] like Figure 4A As indicated by reference numeral 405, UE 120 may receive (eg, on first cell 401 and / or second cell 402) configuration information indicating a configuration for first cell 401, such as in conjunction with Figure 5 For example, the configuration for the first cell 401 may reference a second cell identifier associated with the second cell 402 .

[0106] like Figure 4BAs shown, UE 120 may move away from the coverage area associated with second cell 402 (e.g., move to or beyond the edge of second cell 402). As shown by reference numeral 410, based at least in part on the movement of UE 120, UE 120 may receive (e.g., on first cell 401 and / or second cell 402) an indication that a serving cell for UE 120 will be changed from second cell 402 to third cell 403, as shown in conjunction with Figure 5 As further described. Thus, for example, the third cell 403 may become a new PCell for the UE 120, and the second cell 402 may become a new SCell for the UE 120 after the serving cell change. As shown, the indication may be sent via L1 or L2 signaling (such as via DCI or MAC-CE). For example, the DCI or MAC-CE may include a cell change indication (e.g., a beam switching indication).

[0107] like Figure 4C As shown by reference numeral 415a, in some aspects, UE 120 can exchange cell identifiers for second cell 402 and third cell 403, such as in conjunction with Figure 5 That is, UE 120 may use the third cell identifier for second cell 402 and the second cell identifier for third cell 403. In this way, by assuming that references to the second cell identifier in the configuration are referring to third cell 403 (rather than second cell 402), the configuration remains valid.

[0108] like Figure 4D As shown by reference numeral 415b, in some aspects, UE 120 may update the configuration by replacing the second cell identifier with a third cell identifier, such as in conjunction with Figure 5 In this way, by assuming that the configuration is referencing the third cell identifier of the third cell 403 (rather than the second cell identifier of the second cell 402 ), the configuration remains valid.

[0109] As indicated above, 4A to 4D Other examples can be found in the 4A to 4D The examples described are different.

[0110] Figure 5 is a diagram of an example 500 associated with communicating using a cross-carrier configuration after a serving cell change according to the present disclosure. Figure 5 As shown, a network node 110 (eg, a CU, DU, and / or RU) may communicate with a UE 120. In some aspects, the network node 110 and the UE 120 may be part of a wireless network (eg, the wireless network 100). The UE 120 and the network node 110 may be in communication with each other. Figure 5The operations shown are previously performed with a wireless connection established. In some aspects, operations described as being performed by a network node 110 may be performed by multiple network nodes 110. For example, a configuration operation may be performed by a first network node 110 (e.g., a CU or DU), and a radio communication operation may be performed by a second network node 110 (e.g., a RU).

[0111] As indicated by reference numeral 505, the network node 110 may send, and the UE 120 may receive, the configuration information. In some aspects, the UE 120 may receive the configuration information via one or more of RRC signaling, one or more MAC-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 selection by the UE 120 (e.g., known to the UE 120 and / or previously indicated by the network node 110 or another network device) and / or explicit configuration information for the UE 120 to use to configure the UE 120.

[0112] In some aspects, the configuration information may indicate a configuration for a first cell 501 associated with a first cell identifier. The first cell 501 may be a current SCell for the UE 120. The configuration may be a cross-carrier configuration including a reference to another cell. For example, the configuration for the first cell 501 may reference a second cell identifier (e.g., a serving cell identifier) ​​associated with the second cell 502. The second cell 502 may be a current serving cell (e.g., a PCell) for the UE 120.

[0113] In some aspects, the configuration may include a cross-carrier scheduling configuration (e.g., CrossCarrierSchedulingConfig) for the first cell. Here, the first cell 501 may be a scheduled cell for cross-carrier scheduling, and the second cell 502 may be a scheduling cell for cross-carrier scheduling. For example, the cross-carrier scheduling configuration may include a parameter indicating whether a carrier indicator field (CIF) is present in the DCI (e.g., cif-Presence), a parameter indicating a cell identifier (e.g., ServCellIndex) of a scheduling cell for cross-carrier scheduling (e.g., schedulingCellId), and / or a parameter indicating a CIF value (e.g., cif-InSchedulingCell), the CIF value indicating scheduling for the scheduled cell. Therefore, the cell identifier of the scheduling cell in the cross-carrier scheduling configuration may be a second cell identifier of the second cell 502.

[0114] Additionally or alternatively, the configuration may include a transmission configuration indicator (TCI) configuration for the first cell 501. For example, the TCI configuration may include a TCI state parameter (e.g., TCI-State) that references a quasi co-location (QCL) information parameter (e.g., QCL-Info), and the QCL information parameter may indicate a cell identifier (e.g., ServCellIndex) of the serving cell. The TCI configuration may also indicate a QCL type. Thus, the cell identifier of the serving cell in the TCI configuration may be a second cell identifier of the second cell 502. The TCI state may indicate a directionality or characteristic of a beam, such as one or more QCL attributes of the beam. The QCL attributes may include, for example, Doppler shift, Doppler spread, average delay, delay spread, or spatial reception parameters, etc.

[0115] Additionally or alternatively, the configuration may include a path loss reference signal (PLRS) configuration (e.g., PLRS-config) for the first cell 501. For example, the PLRS configuration may include a parameter indicating a cell identifier of a cell on which the PLRS is to be measured and a parameter indicating a reference signal identifier for a reference signal to be used for the PLRS. Thus, the cell identifier of the cell in the PLRS configuration may be a second cell identifier of the second cell 502. "PLRS" may refer to a reference signal indicated to be used or otherwise used for path loss estimation.

[0116] Additionally or alternatively, the configuration may include a channel state information (CSI) report configuration (e.g., CSI-report-config) for the first cell 501. For example, the CSI report configuration may include a parameter indicating a cell identifier of a cell on which measurements for CSI reporting are to be performed. Thus, the cell identifier of the cell in the CSI report configuration may be a second cell identifier of the second cell 502. In conjunction with the CSI report configuration, the cell identifier may be configured with a channel measurement resource or a triggering state for semi-persistent CSI or aperiodic CSI. "CSI report" or "CSI feedback" may refer to a report on CSI for a cell provided by a UE. CSI may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), or a rank indicator (RI), etc.

[0117] Additionally or alternatively, the configuration may include a physical uplink control channel (PUCCH) cell configuration for the first cell 501. For example, the PUCCH cell configuration may include a parameter indicating a cell identifier of a cell to be a PUCCH cell. Thus, the cell identifier of the cell in the PUCCH cell configuration may be a second cell identifier of the second cell 502. A "PUCCH cell" may refer to a cell on which PUCCH communication is allowed.

[0118] UE 120 may configure itself based at least in part on the configuration information.In some aspects, UE 120 may be configured to perform one or more operations described herein based at least in part on the configuration information.

[0119] As indicated by reference numeral 510, the network node 110 may send and the UE 120 may receive an indication that the serving cell for the UE 120 will be changed from the second cell 502 (associated with the second cell identifier) ​​to the third cell 503 associated with the third cell identifier (e.g., the serving cell identifier). The third cell 503 may be the current SCell for the UE 120 (before the indication) and / or the candidate PCell for the UE 120. For example, the indication may indicate that the PCell for the UE 120 will be changed from the second cell 502 to the third cell 503. The indication may be a dynamic indication. That is, the indication may be combined with mobility (e.g., inter-cell mobility) signaling based on layer 1 (L1) or layer 2 (L2). For example, the indication may be in one of a DCI or a MAC-CE. The UE 120 may receive the indication in conjunction with a UE mobility scenario (e.g., where the UE 120 is moving between coverage areas).

[0120] Therefore, the indication of changing from the second cell 502 to the third cell 503 may result in the following scenario: the candidate cell (the third cell 503) is selected as the new cell to which the handover from the old cell (the second cell 502) occurs, and there is an additional cell (the first cell 501) having a cross-carrier configuration including the cell identifier of the old cell. In other words, the change from the second cell 502 to the third cell 503 results in a configuration with an outdated reference to the second cell identifier. Therefore, the cross-carrier configuration is a subordinate cross-carrier configuration that should be updated to maintain the validity of the configuration. In some aspects, where the configuration is a cross-carrier scheduling configuration, the old cell (the second cell 502) is the scheduling cell and the additional cell (the first cell 501) is the scheduled cell.

[0121] As indicated by reference numeral 515, in response to an indication (e.g., to update a dependent cross-carrier configuration), the UE 120 may implicitly exchange the third cell identifier (old cell identifier) ​​and the second cell identifier (new cell identifier) ​​by using the second cell identifier for the third cell and the third cell identifier for the second cell. In other words, the UE 120 may use the following assumption: the third cell 503 is associated with the second cell identifier and the second cell 502 is associated with the third cell identifier. For example, if the second cell 502 is a PCell associated with a cell identifier 0, then after exchanging cell identifiers, the cell identifier for the third cell 503 is 0. In this way, the configuration for the first cell 501 remains valid. For example, the cross-carrier scheduling configuration for the first cell 501 (e.g., the scheduled cell) remains valid. In some aspects, the CIF value used in the second cell 502 may be maintained in the third cell 503. That is, the set of values ​​(e.g., one or more values) that can be used for the CIF in the DCI does not change due to the change of the serving cell from the second cell 502 to the third cell 503. In some aspects, the network node 110 may also implicitly exchange cell identifiers by using the second cell identifier for the third cell and the third cell identifier for the second cell in a manner similar to as described above.

[0122] Alternatively, as indicated by reference numeral 520, in response to an indication (e.g., to update the dependent cross-carrier configuration), the UE 120 may implicitly update the configuration for the first cell 501 by replacing the second cell identifier (old cell identifier) ​​in the configuration with the third cell identifier (new cell identifier). In other words, the UE 120 may use the following assumption: the second cell identifier in the configuration is replaced with the third cell identifier. In some aspects, the network node 110 may also implicitly update the configuration by replacing the second cell identifier in the configuration with the third cell identifier in a manner similar to that described above.

[0123] Alternatively, as shown by reference numeral 525, in response to the indication, UE 120 may suspend the configuration for the first cell. UE 120 may suspend the configuration until UE 120 receives new signaling (e.g., mapping signaling) that updates the configuration (e.g., RRC signaling or MAC-CE may update the cell identifier in the configuration for the cell). In some aspects, network node 110 may also suspend the configuration for the first cell.

[0124] As indicated by reference numeral 530, the UE 120 may communicate and / or the network node 110 may communicate (e.g., communicate with each other). For example, by using the second cell identifier for the third cell and using the third cell identifier for the second cell (e.g., implicitly exchanging the cell identifiers of the second cell 502 and the third cell 503), the UE 120 (e.g., on the first cell 501) may communicate according to the configuration and / or the network node 110 may communicate according to the configuration. In this way, after the serving cell is changed, the configuration remains valid. As another example, by replacing (e.g., implicitly replacing) the second cell identifier in the configuration with the third cell identifier (e.g., the configuration is implicitly updated from the second cell identifier to the third cell identifier), the UE 120 (e.g., on the first cell 501) may communicate according to the configuration and / or the network node 110 may communicate according to the configuration. In this way, after the serving cell is changed, the configuration is implicitly updated to a valid state.

[0125] As an additional example, independent of the configuration (e.g., without using the settings of the configuration), the UE 120 (e.g., on the first cell 501) may communicate and / or the network node 110 may communicate. For example, the UE 120 (e.g., on the first cell 501) may communicate and / or the network node 110 may communicate with the configuration for the first cell 501 suspended. Suspending the configuration may include ignoring the configuration (e.g., by using default settings for parameters of the configuration instead of using settings indicated by the configuration). In this way, after the serving cell is changed, outdated references in the configuration do not adversely affect communications.

[0126] As indicated by reference numeral 535, the network node 110 may send and the UE 120 may receive an update to the configuration for the first cell 501 (e.g., signaling indicating the update). The update may update the second cell identifier referenced in the configuration to a third cell identifier. The update may be in one of RRC signaling or MAC-CE. In response to the update, the UE 120 may communicate according to the configuration (e.g., on the first cell 501) and / or the network node may communicate according to the configuration. For example, the suspension of the configuration may be released in response to the update.

[0127] In this way, the techniques described herein resolve outdated references to cell identifiers in a cross-carrier configuration. As a result, communication performance after a serving cell change is improved.

[0128] As indicated above, Figure 5 Other examples can be found in the Figure 5 The examples described are different.

[0129] Figure 6 is a diagram illustrating an example process 600 performed, for example, by a UE in accordance with the present disclosure. Example process 600 is an example in which a UE (eg, UE 120) performs operations associated with communicating using a cross-carrier configuration after a serving cell change.

[0130] like Figure 6 As shown, in some aspects, process 600 may include receiving (e.g., obtaining) information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell (block 610). For example, a UE (e.g., using Fig.12 The communications manager 140 and / or receiving component 1202 depicted in FIG. 1 may receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell, as described above.

[0131] like Figure 6 As further shown, in some aspects, process 600 may include receiving (eg, obtaining) an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier (block 620). Fig.12 The communications manager 140 and / or receiving component 1202 depicted in FIG. 1 may receive an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier, as described above.

[0132] like Figure 6 As further shown, in some aspects, process 600 may include communicating (e.g., obtaining, providing, and / or outputting) according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell (block 630). Fig.12 The communications manager 140, receiving component 1202, and / or sending component 1204 depicted in FIG. 1 may communicate according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell, as described above.

[0133] Process 600 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 configuration includes at least one of: a cross-carrier scheduling configuration, a transmission configuration indicator configuration, a path loss reference signal configuration, a channel state information reporting configuration, or a physical uplink control channel cell configuration.

[0135] In a second aspect, alone or in combination with the first aspect, a set of values ​​that can be used for the carrier indicator field in the downlink control information will not change due to the serving cell being changed from the second cell to the third cell.

[0136] In a third aspect, alone or in combination with one or more of the first and second aspects, the serving cell is a primary cell.

[0137] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the indication is in one of downlink control information or MAC-CE.

[0138] although Figure 6 An example block diagram of process 600 is shown, but in some aspects, process 600 may include Figure 6 In some embodiments, the process 600 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 600. Additionally or alternatively, two or more blocks of the blocks of process 600 may be performed in parallel.

[0139] Figure 7 is a diagram illustrating an example process 700 performed, for example, by a UE in accordance with the present disclosure. Example process 700 is an example in which a UE (eg, UE 120) performs operations associated with communicating using a cross-carrier configuration after a serving cell change.

[0140] like Figure 7 As shown, in some aspects, process 700 may include receiving (e.g., obtaining) information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell (block 710). For example, a UE (e.g., using Fig.12 The communications manager 140 and / or receiving component 1202 depicted in FIG. 1 may receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell, as described above.

[0141] like Figure 7 As further shown, in some aspects, process 700 may include receiving (eg, obtaining) an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier (block 720). Fig.12 The communications manager 140 and / or receiving component 1202 depicted in FIG. 1 may receive an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier, as described above.

[0142] like Figure 7As further shown, in some aspects, process 700 may include communicating (e.g., obtaining, providing, and / or outputting) according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier (block 730). Fig.12 The communication manager 140, receiving component 1202, and / or sending component 1204 depicted in FIG. 1 may communicate according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier, as described above.

[0143] Process 700 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.

[0144] In a first aspect, the configuration includes at least one of: a cross-carrier scheduling configuration, a transmission configuration indicator configuration, a path loss reference signal configuration, a channel state information reporting configuration, or a physical uplink control channel cell configuration.

[0145] In a second aspect, alone or in combination with the first aspect, the serving cell is a primary cell.

[0146] In a third aspect, alone or in combination with one or more of the first and second aspects, the indication is in one of downlink control information or MAC-CE.

[0147] although Figure 7 An example block diagram of process 700 is shown, but in some aspects, process 700 may include Figure 7 In some embodiments, the process 700 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 700. Additionally or alternatively, two or more blocks of the blocks of process 700 may be performed in parallel.

[0148] Figure 8 8 is a diagram illustrating an example process 800 performed, for example, by a UE according to the present disclosure. Example process 800 is an example in which a UE (eg, UE 120) performs operations associated with communicating using a cross-carrier configuration after a serving cell change. Operations that may be optional are indicated with dashed lines.

[0149] like Figure 8 As shown, in some aspects, process 800 may include receiving (e.g., obtaining) information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell (block 810). For example, a UE (e.g., using Fig.12The communications manager 140 and / or receiving component 1202 depicted in FIG. 1 may receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell, as described above.

[0150] like Figure 8 As further shown, in some aspects, process 800 may include receiving (e.g., obtaining) an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier (block 820). Fig.12 The communications manager 140 and / or receiving component 1202 depicted in FIG. 1 may receive an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier, as described above.

[0151] like Figure 8 As further shown, in some aspects, process 800 may include, in response to the indication, communicating (eg, obtaining, providing, and / or outputting) independently of the configuration (block 830). Fig.12 The communication manager 140, receiving component 1202 and / or sending component 1204 depicted in FIG. 1 may communicate in response to the indication, independent of the configuration, as described above.

[0152] In some aspects, process 800 may include receiving (eg, obtaining) an update to the configuration that updates the second cell identifier to the third cell identifier (block 840). For example, a UE (eg, using Fig.12 The communications manager 140 and / or receiving component 1202 depicted in FIG. 1 may receive an update to the configuration that updates the second cell identifier to the third cell identifier, as described above.

[0153] In some aspects, process 800 may include, in response to the update, communicating (e.g., obtaining, providing, and / or outputting) according to the configuration (block 850). For example, a UE (e.g., using Fig.12 The communications manager 140, receiving component 1202, and / or sending component 1204 depicted in FIG. 1 may communicate according to the configuration in response to the update, as described above.

[0154] 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.

[0155] In a first aspect, the configuration includes at least one of: a cross-carrier scheduling configuration, a transmission configuration indicator configuration, a path loss reference signal configuration, a channel state information reporting configuration, or a physical uplink control channel cell configuration.

[0156] In a second aspect, alone or in combination with the first aspect, process 800 includes receiving an update to the configuration, the update updating the second cell identifier to a third cell identifier; and communicating according to the configuration in response to the update.

[0157] In a third aspect, alone or in combination with one or more of the first and second aspects, the update is one of radio resource control signaling or MAC-CE.

[0158] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the serving cell is a primary cell.

[0159] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the indication is in one of downlink control information or MAC-CE.

[0160] although Figure 8 An example block diagram of process 800 is shown, but in some aspects, process 800 may include Figure 8 In some embodiments, the process 800 may include additional 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.

[0161] Fig. 9 900 is a diagram illustrating an example process 900 performed, for example, by a network node according to the present disclosure. Example process 900 is an example in which a network node (e.g., network node 110) performs operations associated with communicating using a cross-carrier configuration after a serving cell change. Operations that may be optional are indicated with dashed lines.

[0162] like Fig. 9 As shown, in some aspects, process 900 may include: sending (e.g., providing and / or outputting) information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell (block 910). For example, a network node (such as a CU, DU, or RU) (e.g., using Fig.15 The communications manager 150 and / or the sending component 1504 depicted in FIG. 1 may send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell, as described above.

[0163] like Fig. 9 As further shown, in some aspects, process 900 may include sending (e.g., providing and / or outputting) an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier (block 920). For example, a network node (such as a CU, DU, or RU) (e.g., using Fig.15 The communications manager 150 and / or sending component 1504 depicted in FIG. 1 may send an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier, as described above.

[0164] like Fig. 9 As further shown, in some aspects, process 900 may include communicating (e.g., obtaining, providing, and / or outputting) according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell (block 930). For example, a network node (such as a CU or DU) (e.g., using Fig.15 The communications manager 150, receiving component 1502, and / or sending component 1504 depicted in FIG. 1 may communicate according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell, as described above.

[0165] Process 900 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.

[0166] In a first aspect, the configuration includes at least one of: a cross-carrier scheduling configuration, a transmission configuration indicator configuration, a path loss reference signal configuration, a channel state information reporting configuration, or a physical uplink control channel cell configuration.

[0167] In a second aspect, alone or in combination with the first aspect, a set of values ​​that can be used for the carrier indicator field in the downlink control information will not change due to the serving cell being changed from the second cell to the third cell.

[0168] In a third aspect, alone or in combination with one or more of the first and second aspects, the serving cell is a primary cell.

[0169] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the indication is in one of downlink control information or MAC-CE.

[0170] although Fig. 9 An example block diagram of process 900 is shown, but in some aspects, process 900 may include Fig. 9Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 900. Additionally or alternatively, two or more blocks of the blocks of process 900 may be performed in parallel.

[0171] Fig.10 is a diagram illustrating an example process 1000 performed, for example, by a network node in accordance with the present disclosure. The example process 1000 is an example in which a network node (eg, the network node 110) performs operations associated with communicating using a cross-carrier configuration after a serving cell change.

[0172] like Fig.10 As shown, in some aspects, process 1000 may include: sending (e.g., providing and / or outputting) information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell (block 1010). For example, a network node (such as a CU, DU, or RU) (e.g., using Fig.15 The communications manager 150 and / or the sending component 1504 depicted in FIG. 1 may send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell, as described above.

[0173] like Fig.10 As further shown, in some aspects, process 1000 may include sending (e.g., providing and / or outputting) an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier (block 1020). For example, a network node (such as a CU, DU, or RU) (e.g., using Fig.15 The communications manager 150 and / or sending component 1504 depicted in FIG. 1 may send an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier, as described above.

[0174] like Fig.10 As further shown, in some aspects, process 1000 may include: communicating (e.g., obtaining, providing, and / or outputting) according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier (block 1030). For example, a network node (such as a CU or DU) (e.g., using Fig.15 The communication manager 150, receiving component 1502, and / or sending component 1504 depicted in FIG. 1 may communicate according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier, as described above.

[0175] Process 1000 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.

[0176] In a first aspect, the configuration includes at least one of: a cross-carrier scheduling configuration, a transmission configuration indicator configuration, a path loss reference signal configuration, a channel state information reporting configuration, or a physical uplink control channel cell configuration.

[0177] In a second aspect, alone or in combination with the first aspect, the serving cell is a primary cell.

[0178] In a third aspect, alone or in combination with one or more of the first and second aspects, the indication is in one of downlink control information or MAC-CE.

[0179] although Fig.10 An example block diagram of process 1000 is shown, but in some aspects, process 1000 may include Fig.10 Additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in the process 1000. Additionally or alternatively, two or more of the blocks in the process 1000 may be performed in parallel.

[0180] Fig.11 is a diagram illustrating an example process 1100, performed, for example, by a network node, in accordance with the present disclosure. The example process 1100 is an example in which a network node (eg, the network node 110) performs operations associated with communicating using a cross-carrier configuration after a serving cell change.

[0181] like Fig.11 As shown, in some aspects, process 1100 may include: sending (e.g., providing and / or outputting) information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell (block 1110). For example, a network node (such as a CU, DU, or RU) (e.g., using Fig.15 The communications manager 150 and / or the sending component 1504 depicted in FIG. 1 may send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell, as described above.

[0182] like Fig.11 As further shown, in some aspects, process 1100 may include sending (e.g., providing and / or outputting) an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier (block 1120). For example, a network node (such as a CU, DU, or RU) (e.g., using Fig.15 The communications manager 150 and / or sending component 1504 depicted in FIG. 1 may send an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier, as described above.

[0183] like Fig.11 As further shown, in some aspects, process 1100 may include: in response to the indication, communicating (e.g., obtaining, providing, and / or outputting) independently of the configuration (block 1130). For example, a network node (such as a CU or DU) (e.g., using Fig.15 The communications manager 150, receiving component 1502, and / or sending component 1504 depicted in FIG. 1 may communicate in response to the indication, independent of the configuration, as described above.

[0184] In some aspects, process 1100 may include sending (e.g., providing and / or outputting) an update to the configuration that updates the second cell identifier to the third cell identifier (block 1140). For example, a network node (such as a CU, DU, or RU) (e.g., using Fig.15 The communications manager 150 and / or sending component 1504 depicted in FIG. 1 may send an update to the configuration that updates the second cell identifier to the third cell identifier, as described above.

[0185] In some aspects, process 1100 may include, in response to the update, communicating (e.g., obtaining, providing, and / or outputting) according to the configuration (block 1150). For example, a network node (such as a CU or DU) (e.g., using Fig.15 The communications manager 150, receiving component 1502, and / or sending component 1504 depicted in FIG. 1 may communicate according to the configuration in response to the update, as described above.

[0186] 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.

[0187] In a first aspect, the configuration includes at least one of: a cross-carrier scheduling configuration, a transmission configuration indicator configuration, a path loss reference signal configuration, a channel state information reporting configuration, or a physical uplink control channel cell configuration.

[0188] In a second aspect, alone or in combination with the first aspect, process 1100 includes sending an update to the configuration, the update updating the second cell identifier to a third cell identifier; and in response to the update, communicating according to the configuration.

[0189] In a third aspect, alone or in combination with one or more of the first and second aspects, the update is one of radio resource control signaling or MAC-CE.

[0190] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the serving cell is a primary cell.

[0191] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the indication is in one of downlink control information or MAC-CE.

[0192] 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.

[0193] 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 and a transmitting component 1204 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1200 may communicate with another apparatus 1206 (such as a UE, a network node, or another wireless communication device) using receiving component 1202 and transmitting component 1204. As further shown, apparatus 1200 may include a communication manager 140. Communication manager 140 may include configuration component 1208, etc.

[0194] In some aspects, the apparatus 1200 may be configured to perform 4A to 4D and Figure 5 Additionally or alternatively, the apparatus 1200 may be configured to perform one or more processes described herein, such as Figure 6 The process of 600 Figure 7 The process 700 Figure 8 In some aspects, Fig.12 The device 1200 and / or one or more 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 2Additionally or alternatively, one or more components in the set of components 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 may be executed by a controller or processor to perform the function or operation of the component.

[0195] The receiving component 1202 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1206. 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.

[0196] The transmitting component 1204 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to the device 1206. 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 1206. 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 1206. 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.

[0197] Receiving component 1202 can receive information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. Receiving component 1202 can receive an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier.

[0198] In some aspects, the configuration component 1208 can implicitly exchange the third cell identifier and the second cell identifier by using the second cell identifier for the third cell and the third cell identifier for the second cell. The receiving component 1202 and / or the sending component 1204 can communicate according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell.

[0199] In some aspects, the configuration component 1208 can implicitly update the configuration for the first cell by replacing the second cell identifier in the configuration with the third cell identifier. The receiving component 1202 and / or the sending component 1204 can communicate according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0200] In some aspects, the configuration component 1208 can suspend the configuration. The receiving component 1202 and / or the sending component 1204 can communicate independently of the configuration in response to the indication. The receiving component 1202 can receive an update to the configuration, the update updating the second cell identifier to the third cell identifier. The receiving component 1202 and / or the sending component 1204 can communicate according to the configuration in response to the update.

[0201] 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 assembly of (one or more) components shown may be described as being executable by Fig.12 Another collection of components shown performs one or more functions.

[0202] Fig.13 is a diagram illustrating an example 1300 of a hardware implementation for an apparatus 1305 employing a processing system 1310 according to the present disclosure. The apparatus 1305 may be a UE.

[0203] The processing system 1310 may be implemented with a bus architecture, generally represented by bus 1315. Bus 1315 may include any number of interconnecting buses and bridges, depending on the specific application of the processing system 1310 and the overall design constraints. Bus 1315 links together various circuits including one or more processors and / or hardware components (represented by processor 1320, illustrated components, and computer readable media / memory 1325). Bus 1315 may also link various other circuits, such as timing sources, peripherals, voltage regulators, and / or power management circuits.

[0204] The processing system 1310 may be coupled to a transceiver 1330. The transceiver 1330 is coupled to one or more antennas 1335. The transceiver 1330 provides components for communicating with various other devices through a transmission medium. The transceiver 1330 receives signals from one or more antennas 1335, extracts information from the received signals, and provides the extracted information to the processing system 1310 (specifically the receiving component 1202). In addition, the transceiver 1330 receives information from the processing system 1310 (specifically the transmitting component 1204) and generates a signal to be applied to one or more antennas 1335 based at least in part on the received information.

[0205] The processing system 1310 includes a processor 1320 coupled to a computer readable medium / memory 1325. The processor 1320 is responsible for general processing, including executing software stored on the computer readable medium / memory 1325. The software, when executed by the processor 1320, causes the processing system 1310 to perform various functions described herein for any particular device. The computer readable medium / memory 1325 may also be used to store data manipulated by the processor 1320 when executing the software. The processing system also includes at least one of the illustrated components. A component may be: a software module running in the processor 1320, resident / stored in the computer readable medium / memory 1325, one or more hardware modules coupled to the processor 1320, or some combination thereof.

[0206] In some aspects, the processing system 1310 may be a component of the UE 120 and may include the memory 282 and / or at least one of the TX MIMO processor 266, the receive processor 258, and / or the controller / processor 280. In some aspects, the apparatus 1305 for wireless communication includes: means for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; means for receiving an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; means for communicating in accordance with the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell; means for communicating in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier; and / or means for communicating independently of the configuration in response to the indication. The aforementioned means may be one or more of the aforementioned components of the apparatus 1200 and / or the processing system 1310 of the apparatus 1305 configured to perform the functions recited by the aforementioned means. As described elsewhere herein, the processing system 1310 may include the TX MIMO processor 266, the receive processor 258, and / or the controller / processor 280. In one configuration, the aforementioned components may be the TX MIMO processor 266, the receive processor 258, and / or the controller / processor 280 configured to perform the functions and / or operations stated herein.

[0207] Fig.13 Provided as an example. Other examples can be combined with Fig.13 The examples described are different.

[0208] Fig.14 is a diagram of an example 1400 illustrating a specific implementation of code and circuits for an apparatus 1405 according to the present disclosure. The apparatus 1405 may be a UE, or a UE may include the apparatus 1405.

[0209] like Fig.14 As shown, the device 1405 may include: a circuit (circuit 1420) for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. For example, the circuit 1420 may enable the device 1405 to receive information indicating a configuration for a first cell associated with the first cell identifier, the configuration referencing a second cell identifier associated with the second cell as a serving cell.

[0210] like Fig.14As shown, the apparatus 1405 may include code (code 1425) stored in the computer-readable medium 1325 for receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. For example, when executed by the processor 1320, the code 1425 may cause the processor 1320 to cause the transceiver 1330 to: receive information indicating a configuration for a first cell associated with the first cell identifier, the configuration referencing a second cell identifier associated with the second cell as a serving cell.

[0211] like Fig.14 As shown, the device 1405 may include a circuit (circuit 1430) for receiving an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. For example, the circuit 1430 may enable the device 1405 to receive an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier.

[0212] like Fig.14 As shown, the apparatus 1405 may include code (code 1435) stored in the computer-readable medium 1325 for receiving an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. For example, when the code 1435 is executed by the processor 1320, the processor 1320 may cause the transceiver 1330 to receive an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier.

[0213] like Fig.14 As shown, the device 1405 may include a circuit (circuit 1440) for performing the following operations: communicating according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell or by replacing the second cell identifier in the configuration with the third cell identifier, or communicating independently of the configuration. For example, the circuit 1440 may enable the device 1405 to communicate according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell or by replacing the second cell identifier in the configuration with the third cell identifier, or communicating independently of the configuration.

[0214] like Fig.14As shown, the device 1405 may include a code (code 1445) stored in the computer-readable medium 1325 for performing the following operations: communicating according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell or by replacing the second cell identifier in the configuration with the third cell identifier, or communicating independently of the configuration. For example, when the code 1445 is executed by the processor 1320, the processor 1320 may cause the transceiver 1330 to communicate according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell or by replacing the second cell identifier in the configuration with the third cell identifier, or communicating independently of the configuration.

[0215] Fig.14 Provided as an example. Other examples can be combined with Fig.14 The examples described are different.

[0216] Fig.15 1 is a diagram of an example apparatus 1500 for wireless communication according to the present disclosure. Apparatus 1500 may be a network node, or a network node may include apparatus 1500. In some aspects, apparatus 1500 includes a receiving component 1502 and a transmitting component 1504 that may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1500 may communicate with another apparatus 1506 (such as a UE, a base station, or another wireless communication device) using receiving component 1502 and transmitting component 1504. As further shown, apparatus 1500 may include a communication manager 150. Communication manager 150 may include a configuration component 1508, among other things.

[0217] In some aspects, the apparatus 1500 may be configured to perform 4A to 4D and Figure 5 Additionally or alternatively, the apparatus 1500 may be configured to perform one or more processes described herein, such as Fig. 9 The process of 900 Fig.10 The process of 1000 Fig.11 In some aspects, Fig.15 The device 1500 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Fig.15 One or more of the components shown may be combined with Figure 2Additionally or alternatively, one or more components in the set of components 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 may be executed by a controller or processor to perform the function or operation of the component.

[0218] The receiving component 1502 may receive communications, such as reference signals, control information, data communications, or combinations thereof, from the device 1506. The receiving component 1502 may provide the received communications to one or more other components of the device 1500. In some aspects, the receiving component 1502 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 1500. In some aspects, the receiving component 1502 may include combining Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof, of the described network nodes.

[0219] Transmit component 1504 may transmit communications, such as reference signals, control information, data communications, or combinations thereof, to device 1506. In some aspects, one or more other components of device 1500 may generate communications and may provide the generated communications to transmit component 1504 for transmission to device 1506. In some aspects, transmit component 1504 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 1506. In some aspects, transmit component 1504 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 network nodes. In some aspects, the transmit component 1504 can be co-located with the receive component 1502 in a transceiver.

[0220] The sending component 1504 can send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. The sending component 1504 can send an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier.

[0221] In some aspects, the configuration component 1508 can implicitly exchange the third cell identifier and the second cell identifier by using the second cell identifier for the third cell and the third cell identifier for the second cell. The receiving component 1502 and / or the sending component 1504 can communicate according to the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell.

[0222] In some aspects, the configuration component 1508 can implicitly update the configuration for the first cell by replacing the second cell identifier in the configuration with the third cell identifier. The receiving component 1502 and / or the sending component 1504 can communicate according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0223] In some aspects, the configuration component 1508 can suspend the configuration. The receiving component 1502 and / or the sending component 1504 can communicate independently of the configuration in response to the indication. The sending component 1504 can send an update to the configuration that updates the second cell identifier to the third cell identifier. The receiving component 1502 and / or the sending component 1504 can communicate according to the configuration in response to the update.

[0224] Fig.15 The number and arrangement of components shown are provided as examples. In practice, there may be Fig.15 Additional components, fewer components, different components, or components arranged in a different manner than those shown. Fig.15 Two or more components shown may be implemented in a single component, or Fig.15 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Fig.15 The assembly of (one or more) components shown may be described as being executable by Fig.15 Another collection of components shown performs one or more functions.

[0225] Fig.16 is a diagram illustrating an example 1600 of a hardware implementation for an apparatus 1605 employing a processing system 1610 according to the present disclosure. The apparatus 1605 may be a network node.

[0226] The processing system 1610 may be implemented with a bus architecture, generally represented by bus 1615. Bus 1615 may include any number of interconnecting buses and bridges, depending on the specific application of the processing system 1610 and the overall design constraints. Bus 1615 links together various circuits including one or more processors and / or hardware components (represented by processor 1620, illustrated components, and computer readable media / memory 1625). Bus 1615 may also link various other circuits, such as timing sources, peripherals, voltage regulators, and / or power management circuits.

[0227] The processing system 1610 may be coupled to a transceiver 1630. The transceiver 1630 is coupled to one or more antennas 1635. The transceiver 1630 provides components for communicating with various other devices through a transmission medium. The transceiver 1630 receives signals from one or more antennas 1635, extracts information from the received signals, and provides the extracted information to the processing system 1610 (specifically the receiving component 1502). In addition, the transceiver 1630 receives information from the processing system 1610 (specifically the transmitting component 1504) and generates a signal to be applied to one or more antennas 1635 based at least in part on the received information.

[0228] The processing system 1610 includes a processor 1620 coupled to a computer readable medium / memory 1625. The processor 1620 is responsible for general processing, including executing software stored on the computer readable medium / memory 1625. The software, when executed by the processor 1620, causes the processing system 1610 to perform various functions described herein for any particular device. The computer readable medium / memory 1625 may also be used to store data manipulated by the processor 1620 when executing the software. The processing system also includes at least one of the illustrated components. A component may be: a software module running in the processor 1620, resident / stored in the computer readable medium / memory 1625, one or more hardware modules coupled to the processor 1620, or some combination thereof.

[0229] In some aspects, the processing system 1610 may be a component of the network node 110 and may include the memory 242 and / or at least one of the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240. In some aspects, the apparatus 1605 for wireless communication includes: means for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; means for sending an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; means for communicating in accordance with the configuration by using the second cell identifier for the third cell and the third cell identifier for the second cell; means for communicating in accordance with the configuration by replacing the second cell identifier in the configuration with the third cell identifier; and / or means for communicating independently of the configuration in response to the indication. The aforementioned means may be one or more of the aforementioned components of the processing system 1610 of the apparatus 1500 and / or the apparatus 1605 configured to perform the functions recited by the aforementioned means. As described elsewhere herein, the processing system 1610 may include the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240. In one configuration, the aforementioned components may be the TX MIMO processor 230, the receive processor 238, and / or the controller / processor 240 configured to perform the functions and / or operations stated herein.

[0230] Fig.16 Provided as an example. Other examples can be combined with Fig.16 The examples described are different.

[0231] Fig.17 is a diagram of an example 1700 illustrating a specific implementation of code and circuits for an apparatus 1705 according to the present disclosure. The apparatus 1705 may be a network node, or a network node may include the apparatus 1705.

[0232] like Fig.17 As shown, the apparatus 1705 may include: a circuit (circuit 1720) for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. For example, the circuit 1720 may enable the apparatus 1705 to send information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell.

[0233] like Fig.17As shown, the apparatus 1705 may include code (code 1725) stored in the computer-readable medium 1625 for sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell. For example, when executed by the processor 1620, the code 1725 may cause the processor 1620 to cause the transceiver 1630 to: send information indicating a configuration for a first cell associated with the first cell identifier, the configuration referencing a second cell identifier associated with the second cell as a serving cell.

[0234] like Fig.17 As shown, the device 1705 may include a circuit (circuit 1730) for sending an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. For example, the circuit 1730 may enable the device 1705 to send an indication that the serving cell will be changed from the second cell to the third cell associated with the third cell identifier.

[0235] like Fig.17 As shown, the apparatus 1705 may include code (code 1735) stored in the computer-readable medium 1625 for sending an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier. For example, when the code 1735 is executed by the processor 1620, the processor 1620 may cause the transceiver 1630 to send an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier.

[0236] like Fig.17 As shown, the device 1705 may include a circuit (circuit 1740) for performing the following operations: communicating according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell or by replacing the second cell identifier in the configuration with the third cell identifier, or communicating independently of the configuration. For example, the circuit 1740 may enable the device 1705 to communicate according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell or by replacing the second cell identifier in the configuration with the third cell identifier, or communicating independently of the configuration.

[0237] like Fig.17As shown, the device 1705 may include a code (code 1745) stored in the computer-readable medium 1625 for performing the following operations: communicating according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell or by replacing the second cell identifier in the configuration with the third cell identifier, or communicating independently of the configuration. For example, when the code 1745 is executed by the processor 1620, the processor 1620 may cause the transceiver 1630 to communicate according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell or by replacing the second cell identifier in the configuration with the third cell identifier, or communicating independently of the configuration.

[0238] Fig.17 Provided as an example. Other examples can be combined with Fig.17 The examples described are different.

[0239] The following provides an overview of some aspects of the disclosure:

[0240] Aspect 1: A method of wireless communication performed at a user equipment (UE), the method comprising: receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; and communicating according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell.

[0241] Aspect 2: The method according to aspect 1, wherein the configuration includes at least one of the following: cross-carrier scheduling configuration, transmission configuration indicator configuration, path loss reference signal configuration, channel state information report configuration or physical uplink control channel cell configuration.

[0242] Aspect 3: The method according to any one of aspects 1 to 2, wherein a set of values ​​that can be used for the carrier indicator field in the downlink control information will not change due to the serving cell changing from the second cell to the third cell.

[0243] Aspect 4: The method according to any one of aspects 1 to 3, wherein the serving cell is a primary cell.

[0244] Aspect 5: The method according to any one of aspects 1 to 4, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

[0245] Aspect 6: A method of wireless communication performed at a user equipment (UE), the method comprising: receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receiving an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and communicating according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0246] Aspect 7: The method according to Aspect 6, wherein the configuration includes at least one of the following: cross-carrier scheduling configuration, transmission configuration indicator configuration, path loss reference signal configuration, channel state information report configuration or physical uplink control channel cell configuration.

[0247] Aspect 8: The method according to any one of aspects 6 to 7, wherein the serving cell is a primary cell.

[0248] Aspect 9: The method according to any one of aspects 6 to 8, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

[0249] Aspect 10: A method of wireless communication performed at a user equipment (UE), the method comprising: receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receiving an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and communicating independently of the configuration in response to the indication.

[0250] Aspect 11: The method according to aspect 10, wherein the configuration includes at least one of the following: cross-carrier scheduling configuration, transmission configuration indicator configuration, path loss reference signal configuration, channel state information reporting configuration or physical uplink control channel cell configuration.

[0251] Aspect 12: According to the method according to any one of Aspects 10 to 11, the method also includes: receiving an update to the configuration, the update updating the second cell identifier to the third cell identifier; and in response to the update, communicating according to the configuration.

[0252] Aspect 13: The method of aspect 12, wherein the updating is in one of radio resource control signaling or a medium access control control element (MAC-CE).

[0253] Aspect 14: The method according to any one of aspects 10 to 13, wherein the serving cell is a primary cell.

[0254] Aspect 15: The method according to any one of aspects 10 to 14, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

[0255] Aspect 16: A method of wireless communication performed at a network node, the method comprising: sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; sending an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and communicating according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell.

[0256] Aspect 17: The method according to Aspect 16, wherein the configuration includes at least one of the following: cross-carrier scheduling configuration, transmission configuration indicator configuration, path loss reference signal configuration, channel state information reporting configuration or physical uplink control channel cell configuration.

[0257] Aspect 18: A method according to any one of aspects 16 to 17, wherein a set of values ​​that can be used for a carrier indicator field in downlink control information will not change due to the serving cell being changed from the second cell to the third cell.

[0258] Aspect 19: A method according to any one of aspects 16 to 18, wherein the serving cell is a primary cell.

[0259] Aspect 20: The method according to any one of aspects 16 to 19, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

[0260] Aspect 21: A method of wireless communication performed at a network node, the method comprising: sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; sending an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and communicating according to the configuration by replacing the second cell identifier in the configuration with the third cell identifier.

[0261] Aspect 22: The method according to Aspect 21, wherein the configuration includes at least one of the following: cross-carrier scheduling configuration, transmission configuration indicator configuration, path loss reference signal configuration, channel state information reporting configuration or physical uplink control channel cell configuration.

[0262] Aspect 23: A method according to any one of aspects 21 to 22, wherein the serving cell is a primary cell.

[0263] Aspect 24: The method according to any one of aspects 21 to 23, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

[0264] Aspect 25: A method of wireless communication performed at a network node, the method comprising: sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; sending an indication that the serving cell will be changed from the second cell to a third cell associated with a third cell identifier; and communicating independently of the configuration in response to the indication.

[0265] Aspect 26: The method according to Aspect 25, wherein the configuration includes at least one of the following: cross-carrier scheduling configuration, transmission configuration indicator configuration, path loss reference signal configuration, channel state information reporting configuration or physical uplink control channel cell configuration.

[0266] Aspect 27: According to the method according to any one of Aspects 25 to 26, the method also includes: sending an update to the configuration, the update updating the second cell identifier to the third cell identifier; and in response to the update, communicating according to the configuration.

[0267] Aspect 28: The method of aspect 27, wherein the updating is in one of radio resource control signaling or a medium access control control element (MAC-CE).

[0268] Aspect 29: A method according to any one of aspects 25 to 28, wherein the serving cell is a primary cell.

[0269] Aspect 30: The method according to any one of aspects 25 to 29, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

[0270] Aspect 31: 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 5.

[0271] Aspect 32: 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 5.

[0272] Aspect 33: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 5.

[0273] Aspect 34: A non-transitory computer-readable medium storing 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 5.

[0274] Aspect 35: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, 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 5.

[0275] Aspect 36: 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 6 to 9.

[0276] Aspect 37: 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 6 to 9.

[0277] Aspect 38: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 6 to 9.

[0278] Aspect 39: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 6 to 9.

[0279] Aspect 40: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 6 to 9.

[0280] Aspect 41: 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 10 to 15.

[0281] Aspect 42: 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 10 to 15.

[0282] Aspect 43: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 10 to 15.

[0283] Aspect 44: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 10 to 15.

[0284] Aspect 45: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 10 to 15.

[0285] Aspect 46: 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 16 to 20.

[0286] Aspect 47: 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 16 to 20.

[0287] Aspect 48: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 16 to 20.

[0288] Aspect 49: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 16 to 20.

[0289] Aspect 50: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 16 to 20.

[0290] Aspect 51: 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 21 to 24.

[0291] Aspect 52: 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 21 to 24.

[0292] Aspect 53: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 21 to 24.

[0293] Aspect 54: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 21 to 24.

[0294] Aspect 55: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 21 to 24.

[0295] Aspect 56: An apparatus for wireless communication 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 25 to 30.

[0296] Aspect 57: 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 25 to 30.

[0297] Aspect 58: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 25 to 30.

[0298] Aspect 59: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 25 to 30.

[0299] Aspect 60: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 25 to 30.

[0300] While the foregoing disclosure provides illustration and description, it is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0301] 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, execution threads, procedures and / or functions, etc. As used herein, "processor" is implemented by a combination of hardware and / or hardware and software. It will be apparent that the system and / or method described herein can be implemented by a combination of hardware and / or hardware and software in different forms. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, the operation and behavior of the system and / or method are not described herein with reference to specific software codes, because it will be understood by those skilled in the art that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.

[0302] As used herein, "satisfying a threshold" may refer to a value being 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.

[0303] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Many of these features can be combined in ways that are not specifically listed in the claims and / or 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, a phrase referring to "at least one of" a list of items refers to any combination of these items (including 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, as well as any combination with multiple identical elements (e.g., 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).

[0304] Any element, action or instruction used herein should not be interpreted as critical or necessary unless clearly stated. In addition, as used herein, the articles "one" and "a kind of" are intended to include one or more entries and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more entries combined with 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 entries and can be used interchangeably with "one or more". If you only want to refer to an entry, the phrase "only one" or similar terms will be used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "an element that has" A can also have B). In addition, the phrase "based on" is intended to mean "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 can be used interchangeably with "and / or" unless expressly stated otherwise (eg, if used in conjunction with "either" or "only one of").

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to: receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; as well as Communicating according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell.

2. The apparatus of claim 1, wherein the configuration comprises at least one of the following: Cross-carrier scheduling configuration, Send configuration indicator configuration, Path loss reference signal configuration, Channel state information reporting configuration, or Physical uplink control channel cell configuration.

3. The apparatus of claim 1, wherein a set of values ​​that can be used for a carrier indicator field in downlink control information will not change due to the serving cell being changed from the second cell to the third cell. The apparatus according to claim 1 , wherein the serving cell is a primary cell.

5. The apparatus of claim 1, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

6. An apparatus for wireless communication at a UE, the apparatus comprising: Memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to: receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; as well as Communicating according to the configuration is performed by replacing the second cell identifier in the configuration with the third cell identifier.

7. The apparatus of claim 6, wherein the configuration comprises at least one of the following: Cross-carrier scheduling configuration, Send configuration indicator configuration, Path loss reference signal configuration, Channel state information reporting configuration, or Physical uplink control channel cell configuration. The apparatus according to claim 6 , wherein the serving cell is a primary cell.

9. The apparatus of claim 6, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

10. An apparatus for wireless communication at a UE, the apparatus comprising: Memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to: receiving information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; receiving an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; as well as In response to the indication, communicating is performed independent of the configuration.

11. The apparatus of claim 10, wherein the configuration comprises at least one of the following: Cross-carrier scheduling configuration, Send configuration indicator configuration, Path loss reference signal configuration, Channel state information reporting configuration, or Physical uplink control channel cell configuration.

12. The apparatus of claim 10, wherein the one or more processors are further configured to: receiving an update to the configuration, the update updating the second cell identifier to the third cell identifier; and In response to the updating, communicating according to the configuration.

13. The apparatus of claim 12, wherein the update is in one of radio resource control signaling or a medium access control control element (MAC-CE). The apparatus of claim 10 , wherein the serving cell is a primary cell.

15. The apparatus of claim 10, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

16. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to: sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; as well as Communicating according to the configuration by using the second cell identifier for the third cell and using the third cell identifier for the second cell.

17. The apparatus of claim 16, wherein the configuration comprises at least one of: Cross-carrier scheduling configuration, Send configuration indicator configuration, Path loss reference signal configuration, Channel state information reporting configuration, or Physical uplink control channel cell configuration.

18. The apparatus of claim 16, wherein a set of values ​​that can be used for a carrier indicator field in downlink control information will not change due to the serving cell being changed from the second cell to the third cell. The apparatus of claim 16 , wherein the serving cell is a primary cell.

20. The apparatus of claim 16, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

21. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to: sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; as well as Communicating according to the configuration is performed by replacing the second cell identifier in the configuration with the third cell identifier.

22. The apparatus of claim 21, wherein the configuration comprises at least one of: Cross-carrier scheduling configuration, Send configuration indicator configuration, Path loss reference signal configuration, Channel state information reporting configuration, or Physical uplink control channel cell configuration.

23. The apparatus of claim 21, wherein the serving cell is a primary cell.

24. The apparatus of claim 21, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

25. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and one or more processors, the one or more processors coupled to the memory, the one or more processors configured to: sending information indicating a configuration for a first cell associated with a first cell identifier, the configuration referencing a second cell identifier associated with a second cell as a serving cell; sending an indication that the serving cell is to be changed from the second cell to a third cell associated with a third cell identifier; and In response to the indication, communicating is performed independent of the configuration.

26. The apparatus of claim 25, wherein the configuration comprises at least one of: Cross-carrier scheduling configuration, Send configuration indicator configuration, Path loss reference signal configuration, Channel state information reporting configuration, or Physical uplink control channel cell configuration.

27. The apparatus of claim 25, wherein the one or more processors are further configured to: sending an update to the configuration, the update updating the second cell identifier to the third cell identifier; and In response to the updating, communicating according to the configuration.

28. The apparatus of claim 27, wherein the update is in one of radio resource control signaling or a medium access control control element (MAC-CE).

29. The apparatus of claim 25, wherein the serving cell is a primary cell.

30. The apparatus of claim 25, wherein the indication is in one of downlink control information or a medium access control control element (MAC-CE).

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