CN117063529A - Handling of conditional handovers and conditional primary and secondary cell changes - Google Patents

Abstract

Various aspects of the present disclosure relate generally to wireless communications. In some aspects, a User Equipment (UE) may initiate one of a Conditional Handover (CHO) procedure or a conditional primary-secondary cell addition/change (CPAC) procedure. The UE may perform a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure. Numerous other aspects are described.

Description

Handling of conditional handovers and conditional primary and secondary cell changes

Cross Reference to Related Applications

This patent application claims priority from U.S. provisional patent application No.63/168,744 entitled "HANDLING OF CONDITIONAL HANDOVER AND CONDITIONAL PRIMARY SECONDARY CELL CHANGE (conditional handover and treatment of conditional primary secondary cell change)" filed on month 31 of 2021, and U.S. non-provisional patent application No.17/457,177 entitled "HANDLING OF CONDITIONAL HANDOVER AND CONDITIONAL PRIMARY SECONDARY CELL CHANGE (conditional handover and treatment of conditional primary secondary cell change)" filed on month 12 of 2021, which are hereby expressly incorporated herein by reference.

FIELD OF THE DISCLOSURE

Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for Conditional Handover (CHO) and handling of conditional primary secondary cell addition (CPA) or conditional primary secondary cell change (CPC).

Background

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access techniques 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 an enhancement set to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the third generation partnership project (3 GPP).

A wireless network may include one or more base stations supporting communication for one or more User Equipment (UEs). The UE may communicate with the base station via downlink and uplink communications. "downlink" (or "DL") refers to the communication link from a base station to a UE, and "uplink" (or "UL") refers to the communication link from a UE to a base station.

The above multiple access techniques 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. The New Radio (NR), which may be referred to as 5G, is an enhanced set of LTE mobile standards promulgated by 3 GPP. NR is designed to better support mobile broadband internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with cyclic prefix (CP-OFDM) on the downlink, CP-OFDM and/or single carrier frequency division multiplexing (SC-FDM) on the uplink (also known as discrete fourier transform spread OFDM (DFT-s-OFDM) and supporting beamforming, multiple Input Multiple Output (MIMO) antenna techniques and carrier aggregation to improve spectral efficiency, reduce cost, improve services, utilize new spectrum, and integrate better with other open standards.

SUMMARY

In some aspects, a User Equipment (UE) for wireless communication includes: a memory and one or more processors coupled to the memory, the one or more processors configured to: initiating one of a Conditional Handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

In some aspects, a wireless node for wireless communication includes: a memory; and one or more processors coupled to the memory, the one or more processors configured to: performing one of a CHO procedure or a CPAC procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure.

In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: initiate one of a CHO procedure or a CPAC procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a wireless node, cause the wireless node to: performing one of a CHO procedure or a CPAC procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure.

In some aspects, an apparatus for wireless communication comprises: means for initiating one of a CHO procedure or a CPAC procedure; and means for performing a responsive action with respect to configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

In some aspects, an apparatus for wireless communication comprises: means for performing one of a CHO procedure or a CPAC procedure; and means for performing a responsive action with respect to configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure.

In some aspects, a wireless communication method performed by a UE includes: initiate one of a CHO procedure or a CPAC procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

In some aspects, a method of performing wireless communication by a wireless node comprises: initiate one of a CHO procedure or a CPAC procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the accompanying drawings and description.

The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein, both as to their organization and method of operation, together with associated advantages will be better understood from the following description when considered in connection with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description, and is not intended to be limiting of the claims.

While aspects are described in this disclosure by way of illustration of some examples, those skilled in the art will appreciate that such aspects may be implemented in many different arrangements and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via integrated chip embodiments or other non-module component based devices (e.g., end user devices, vehicles, communication devices, computing devices, industrial equipment, retail/shopping devices, medical devices, and/or artificial intelligence devices). Aspects may be implemented in chip-level components, module components, non-chip-level components, device-level components, and/or system-level components. Devices incorporating the described aspects and features may include additional components and features for achieving and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components including antennas, radio Frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers) for analog and digital purposes. Aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, and/or end user devices of various sizes, shapes, and configurations.

Brief Description of Drawings

So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

Fig. 2 is a diagram illustrating an example in which a base station is in communication with a User Equipment (UE) in a wireless network according to the present disclosure.

Fig. 3-9 are diagrams illustrating examples associated with the handling of Conditional Handoffs (CHO) and conditional primary cell additions/changes (CPACs) according to the present disclosure.

Fig. 10-11 are diagrams illustrating example processes associated with the disposition of CHO and CPAC according to this disclosure.

Fig. 12-13 are block diagrams of example apparatuses for wireless communication according to the present disclosure.

Detailed Description

Various aspects of the disclosure are described more fully below with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Those skilled in the art will appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently or in combination with any other aspect of the disclosure. For example, an apparatus may be implemented or a method practiced using any number of the aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such an apparatus or method that is practiced using such structure, functionality, or both as a complement to, or in addition to, the various aspects of the present 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.

Several aspects of a telecommunications system will now be presented with reference to various apparatus 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 may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

Although aspects may be described herein using terms commonly associated with 5G or New Radio (NR) Radio Access Technologies (RATs), aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and/or RATs after 5G (e.g., 6G).

Fig. 1 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, etc., or may include elements thereof. Wireless network 100 may include one or more base stations 110 (shown as BS110a, BS110b, BS110c, and BS110 d), one or more User Equipments (UEs) 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120 e), and/or other network entities. Base station 110 is the entity in communication with UE 120. Base stations 110 (sometimes referred to as BSs) may include, for example, NR base stations, LTE base stations, node BS, enbs (e.g., in 4G), gnbs (e.g., in 5G), access points, and/or Transmission and Reception Points (TRPs). Each base station 110 may provide communication coverage for a particular geographic area. In the third generation partnership project (3 GPP), the term "cell" can refer to a coverage area of a base station 110 and/or a base station subsystem serving the coverage area, depending on the context in which the term is used.

Base station 110 may provide communication coverage for a macrocell, a picocell, a femtocell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 120 with service subscription. A picocell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs 120 associated with the femto cell (e.g., UEs 120 in a Closed Subscriber Group (CSG)). The base station 110 for a macro cell may be referred to as a macro base station. The base station 110 for a pico cell may be referred to as a pico base station. The base station 110 for a femto cell may be referred to as a femto base station or a home base station. In the example shown in fig. 1, BS110a may be a macro base station for macro cell 102a, BS110b may be a pico base station for pico cell 102b, and BS110c may be a femto base station for femto cell 102 c. A base station may support one or more (e.g., three) cells.

In some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile base station 110 (e.g., a mobile base station). In some examples, base stations 110 may be interconnected with each other and/or to one or more other base stations 110 or network nodes (not shown) in wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.

The wireless network 100 may include one or more relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., base station 110 or UE 120) and send the transmission of the data to a downstream station (e.g., UE 120 or base station 110). The relay station may be a UE 120 capable of relaying transmissions for other UEs 120. In the example shown in fig. 1, BS110d (e.g., a relay base station) may communicate with BS110a (e.g., a macro base station) and UE 120d to facilitate communications between BS110a and UE 120 d. The base station 110 relaying communications may be referred to as a relay station, a relay base station, a relay, and so on.

The wireless network 100 may be a heterogeneous network including different types of base stations 110 (such as macro base stations, pico base stations, femto base stations, or relay base stations, etc.). These different types of base stations 110 may have different transmit power levels, different coverage areas, and/or different effects on interference in the wireless network 100. For example, macro base stations may have a high transmit power level (e.g., 5 to 40 watts), while pico base stations, femto base stations, and relay base stations may have a lower transmit power level (e.g., 0.1 to 2 watts).

The network controller 130 may be coupled or in communication with a set of base stations 110 and may provide coordination and control of these base stations 110. The network controller 130 may communicate with the base stations 110 via backhaul communication links. Base stations 110 may communicate with each other directly or indirectly via wireless or wired backhaul communication links.

The UEs 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a mobile station, and/or a subscriber unit. UE 120 may be a cellular telephone (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 device, a camera, a gaming device, a netbook, a smartbook, a super-book, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smartwristband, smart jewelry (e.g., a smartring or smartband)), an entertainment device (e.g., a music device, a video device, and/or a satellite radio), an in-vehicle component or sensor, a smart meter/sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless medium.

Some UEs 120 may be considered Machine Type Communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and/or eMTC UEs may include, for example, robots, drones, remote devices, sensors, gauges, monitors, and/or location tags, which may communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered internet of things (IoT) devices and/or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered client devices. UE 120 may be included within a housing that houses components of UE 120, such as processor components and/or memory components. 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., memory) may be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a particular RAT and may operate on one or more frequencies. The RAT may be referred to as a radio technology, an air interface, etc. The frequencies may be referred to as carriers, frequency channels, 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.

In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120 e) may communicate directly (e.g., without using base station 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, a vehicle-to-vehicle (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol), and/or a mesh network. In such examples, UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by base station 110.

Devices of the wireless network 100 may communicate using electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., by frequency or wavelength. For example, devices of wireless network 100 may communicate using one or more operating frequency bands. In 5G NR, two initial operating bands have been identified as frequency range designated FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be appreciated that although a portion of FR1 is greater than 6GHz, FR1 is commonly (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. Similar naming problems sometimes occur with respect to FR2, which is commonly (interchangeably) referred to as the "millimeter wave" band in various documents and articles, although it is different from the Extremely High Frequency (EHF) band (30 GHz-300 GHz) identified by the International Telecommunications Union (ITU) as the "millimeter wave" band.

The frequency between FR1 and FR2 is commonly referred to as the mid-band frequency. Recent 5G NR studies have identified the operating band of these mid-band frequencies as frequency range designation FR3 (7.125 GHz-24.25 GHz). The frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics and thus may effectively extend the characteristics of FR1 and/or FR2 into mid-band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating bands have been identified as frequency range designation 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 frequency band.

In view of the above examples, unless specifically stated otherwise, it should be understood that, if used herein, the term sub-6 GHz and the like may broadly represent frequencies that may be less than 6GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless specifically stated otherwise, it should be understood that the term "millimeter wave" or the like, if used herein, may broadly mean frequencies that may include mid-band frequencies, may be within FR2, FR4-a, or FR4-1 and/or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4-a, FR4-1, and/or FR 5) may be modified, and that the techniques described herein are applicable to those modified frequency ranges.

In some aspects, UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may initiate one of a Conditional Handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure. Additionally or alternatively, communication manager 140 may perform one or more other operations described herein.

In some aspects, a wireless node (e.g., base station 110 or a core network device associated therewith) may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may perform one of a CHO procedure or a CPAC procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

As indicated above, fig. 1 is provided as an example. Other examples may differ from the example described with respect to fig. 1.

Fig. 2 is a diagram illustrating an example 200 in which a base station 110 is in communication with a UE 120 in a wireless network 100 according to the present disclosure. Base station 110 may be equipped with a set of antennas 234a through 234T, such as T antennas (T.gtoreq.1). UE 120 may be equipped with a set of antennas 252a through 252R, such as R antennas (r≡1).

At base station 110, transmit processor 220 may receive data intended for UE 120 (or a group of UEs 120) from data source 212. Transmit processor 220 may select one or more Modulation and Coding Schemes (MCSs) for UE 120 based at least in part on one or more Channel Quality Indicators (CQIs) received from UE 120. Base station 110 may process (e.g., encode and modulate) data for UE 120 based at least in part on the MCS(s) selected for UE 120 and may provide data symbols to UE 120. 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)). A Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and/or reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modulators) (shown as modems 232a through 232T). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 may process a respective output symbol stream (e.g., for OFDM) using a respective modulator component to obtain an output sample stream. Each modem 232 may further process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. Modems 232a through 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 through 234T).

At UE 120, a set of antennas 252 (shown as antennas 252a through 252R) may receive the downlink signals from base station 110 and/or other base stations 110 and a set of received signals (e.g., R received signals) may be provided to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254R). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 may condition (e.g., filter, amplify, downconvert, and/or digitize) a received signal using a corresponding demodulator component to obtain input samples. Each modem 254 may use a demodulator assembly to further process the input samples (e.g., for OFDM) to obtain received symbols. MIMO detector 256 may obtain the received symbols from modem 254, may perform MIMO detection on the received symbols, if applicable, and may provide detected symbols. Receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for UE 120 to data sink 260, and may provide decoded control information and system information to 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 others. In some examples, one or more components of UE 120 may be included in housing 284.

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

The one or more antennas (e.g., antennas 234a through 234t and/or antennas 252a through 252 r) may include or be included in 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. The antenna panel, antenna group, antenna element set, and/or antenna array may include one or more antenna elements (within a single housing or multiple housings), a coplanar antenna element set, a non-coplanar antenna element set, and/or one or more antenna elements coupled to one or more transmission and/or reception components (such as one or more components of fig. 2).

On the uplink, at UE 120, transmit processor 264 may receive and process data from data source 262 and control information from controller/processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and/or CQI). Transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modem 254 of UE 120 may include a modulator and a demodulator. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, modem(s) 254, MIMO detector 256, receive processor 258, transmit processor 264, and/or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller/processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., with reference to fig. 3-11).

At base station 110, uplink signals from UE 120 and/or other UEs may be received by antennas 234, processed by modems 232 (e.g., the demodulator components of modems 232, shown as DEMODs), detected by MIMO detector 236 if applicable, and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller/processor 240. The base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. Base station 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and/or uplink communications. In some examples, modem 232 of base station 110 may include a modulator and a demodulator. In some examples, base station 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modem(s) 232, MIMO detector 236, receive processor 238, transmit processor 220, and/or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller/processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., with reference to fig. 3-11).

As described, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component(s) of fig. 2 may perform one or more techniques associated with the handling of CHO and CPAC, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component(s) of fig. 2 may perform or direct operations such as process 1000 of fig. 10, process 1100 of fig. 11, and/or other processes as described herein. Memory 242 and memory 282 may store data and program codes for base station 110 and UE 120, respectively. In some examples, memory 242 and/or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and/or UE 120 (e.g., directly, or after compilation, conversion, and/or interpretation), may cause the one or more processors, UE 120, and/or base station 110 to perform or direct operations such as process 1000 of fig. 10, process 1100 of fig. 11, and/or other processes described herein. In some examples, executing instructions may include executing instructions, converting instructions, compiling instructions, and/or interpreting instructions, among others.

In some aspects, UE 120 includes: means for initiating one of a CHO procedure or a CPAC procedure; and/or means for performing a responsive action with respect to configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure. Means for UE 120 to perform the operations described herein may include, for example, one or more of antenna 252, demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, modulator 254, controller/processor 280, or memory 282.

In some aspects, a wireless node (e.g., base station 110) includes means for performing one of a CHO procedure or a CPAC procedure; and/or means for performing a responsive action with respect to the configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure. In some aspects, means for a wireless node to perform the operations described herein may comprise, for example, one or more of transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, demodulator 232, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.

Although the blocks in fig. 2 are illustrated as distinct components, the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combination of components or a combination of various components. For example, the functions described with respect to transmit processor 264, receive processor 258, and/or TX MIMO processor 266 may be performed by controller/processor 280 or under the control of controller/processor 280.

As indicated above, fig. 2 is provided as an example. Other examples may differ from the example described with respect to fig. 2.

The CHO procedure, such as defined in 3GPP Technical Specification (TS) 38.300, section 9.2.3.4 of release 16.4.0, and elsewhere, may be used to improve handover robustness. For example, allowing the UE to perform CHO procedures as the UE moves between cells may reduce the likelihood of failure occurring. In the CHO procedure, the UE and BS may communicate to identify a plurality of target cells to handover to, and when network conditions are relatively good, the BS may transmit a handover command to the UE, thereby reducing the likelihood that degraded network conditions result in a failure associated with the handover command. Then, the UE may autonomously detect the satisfaction of the failure command (e.g., due to network condition degradation) and implement the handover command that has been transmitted by the BS.

A conditional primary secondary cell addition (CPA) procedure or a conditional primary secondary cell change (CPC) procedure, which may be collectively referred to as a "conditional primary secondary cell addition/change (CPAC) procedure," such as defined in 3gpp TS 37.340, section 10.6, section 16.3.0, may similarly be used to improve cell addition or change robustness. For example, allowing the UE to perform the CPAC procedure may reduce the likelihood of failure when adding or changing primary and secondary cells. In the CPAC procedure, the UE may communicate with a set of BSs (e.g., source primary node or source secondary node, etc.) to pre-identify and prepare resources associated with the target secondary node for one or more target primary nodes.

However, in some cases, CHO configurations may conflict with CPAC configurations. For example, when the UE has a CHO configuration and a CPAC configuration and detects an event triggering a CHO procedure or a CPAC procedure, the behavior associated with the other of the CHO procedure and the CPAC procedure may conflict with the CHO procedure or the CPAC procedure. In other words, when a CHO procedure is triggered, the behavior of the CPAC procedure may conflict with the behavior associated with the CHO procedure. Similarly, when a CPAC procedure is triggered, the behavior of the CHO procedure may conflict with the behavior of the CPAC procedure. As a result, errors may occur in the UE operation and network resources may be wasted.

Some aspects described herein provide for disposition of CHO procedures and CPAC procedures and configurations associated therewith when a UE is configured to have both CHO and CPAC configurations. For example, some aspects described herein provide for disposition when triggering a CPAC procedure prior to a CHO procedure, triggering a CHO procedure prior to a CPAC procedure, or triggering a CHO procedure and a CPAC procedure concurrently. In this way, the UE may avoid errors, thereby avoiding wasting network resources due to errors.

Fig. 3 is a diagram illustrating an example 300 associated with the disposition of CHO and CPAC according to the present disclosure. As shown in fig. 3, a UE 305, a source master node (S-MN) 310, a first target master node (T-MN) 315, a second T-MN 320, a first target secondary node (T-SN) 325, and a second T-SN 330 may communicate with each other.

As shown by reference numeral 350, the UE 305 may transmit a measurement report to the S-MN 310. For example, the UE 305 may transmit a measurement report associated with triggering the CPA procedure. Although some aspects are described herein in terms of a CPA procedure, the aspects described herein may be applicable to a CPC procedure or another conditional primary-secondary cell procedure, depending on the context. Similarly, although some aspects are described herein in terms of a CPC procedure, the aspects described herein may apply to a CPA procedure or another conditional primary-secondary cell procedure, depending on the context.

As indicated by reference numeral 352, the S-MN 310, T-MNs 315 and 320, and T-SNs 325 and 330 may communicate in preparation for the CPA procedure.

As indicated by reference numeral 354, the S-MN 310 can communicate a reconfiguration message to the UE 305. For example, S-MN 310 can transmit a Radio Resource Control (RRC) reconfiguration message including a CPA configuration based at least in part on preparation for the CPA procedure.

As shown by reference numeral 356, the UE 305 may communicate a measurement report to the S-MN 310. For example, UE 305 may transmit a measurement report associated with triggering CHO procedures.

S-MN 310 and T-MNs 315 and 320 may communicate to prepare for the CHO procedure, as indicated by reference numeral 358. For example, when the UE 305 detects that the handover condition is met, the S-MN 310 may identify a set of T-MNs (e.g., T-MNs 315 and 320) to which the UE 305 may handover.

As indicated by reference numeral 360, the S-MN 310 can communicate a reconfiguration message to the UE 305. For example, S-MN 310 can transmit an RRC reconfiguration message including a CHO configuration based at least in part on preparation for a CHO procedure. As indicated by reference numeral 362, based at least in part on receiving a reconfiguration message with a CPA configuration and a CHO configuration from the S-MN 310, the UE 305 can store the CPA configuration information and CHO configuration information and monitor whether conditions associated with triggering the CPA procedure or CHO procedure are met.

As shown by reference numeral 364, the UE 305 may determine that the CPA performance condition is satisfied. For example, the UE 305 may determine to trigger a CPA procedure to add a target primary secondary cell (T-PSCell). As indicated by reference numeral 366, the UE 305 may apply the configuration associated with the T-PSCell and may discard the CHO configuration. For example, the UE 305 may apply the T-PSCell configuration that may be included in the CPA configuration information and may discard CHO configuration information to avoid collisions between subsequent CPA procedures and CHO procedures that may be triggered during the CPA procedure.

As indicated by reference numeral 368, the UE 305 may transmit an RRC reconfiguration complete message to the S-MN 310. For example, based at least in part on applying the T-PSCell configuration in the CPA configuration information, the UE 305 may transmit an RRC reconfiguration complete message, which may correspond to an RRC reconfiguration message that includes the CPA configuration information. In this case, the RRC reconfiguration complete message may include information indicating that the CPA procedure is initiated for a specific T-PSCell.

As shown at reference numeral 370, in response to receiving the RRC reconfiguration complete message, the S-MN 310 can communicate with the first T-MN 315 and/or the second T-MN 320 to cancel the handover associated with the CHO procedure. As shown at reference numeral 372, as a further response to transmitting/receiving the RRC reconfiguration complete message, the UE 305, S-MN 310, T-MNs 315 and 320, and T-SNs 325 and 330 may communicate to complete one or more further steps of the CPA procedure.

As indicated above, fig. 3 is provided as an example. Other examples may differ from the example described with respect to fig. 3.

Fig. 4 is a diagram illustrating an example 400 associated with the disposition of CHO and CPAC according to the present disclosure. As shown in fig. 4, UE 405, S-MN 410, first T-MN 415, second T-MN 420, first target T-SN 425, and second T-SN 430 may communicate with one another.

As shown by reference numeral 450, the UE 405 may communicate a measurement report to the S-MN 410. For example, the UE 405 may transmit a measurement report associated with triggering the CPA procedure. As shown at reference numeral 452, the S-MN 410, T-MNs 415 and 420, and T-SNs 425 and 430 may communicate in preparation for the CPA procedure. As shown by reference numeral 454, S-MN 410 may communicate a reconfiguration message to UE 405. For example, S-MN 410 can transmit an RRC reconfiguration message including a CPA configuration based at least in part on preparation for the CPA procedure.

As shown by reference numeral 456, the UE 405 may communicate a measurement report to the S-MN 410. For example, the UE 405 may transmit a measurement report associated with triggering a CHO procedure. As shown at reference numeral 458, S-MN 410 and T-MNs 415 and 420 may communicate to prepare for CHO procedures. For example, when the UE 405 detects that a handover condition is met, the S-MN 410 may identify a set of T-MNs (e.g., T-MNs 415 and 420) to which the UE 405 may handover. As indicated by reference numeral 460, the S-MN 410 may communicate a reconfiguration message to the UE 405. For example, S-MN 410 can transmit an RRC reconfiguration message including a CHO configuration based at least in part on preparation for a CHO procedure. As indicated by reference numeral 462, based at least in part on receiving a reconfiguration message with a CPA configuration and a CHO configuration from S-MN 410, UE 405 may store the CPA configuration information and CHO configuration information and monitor whether conditions associated with triggering the CPA procedure or CHO procedure are met.

As indicated by reference numeral 464, the UE 405 may determine that the CPA performance condition is satisfied. For example, the UE 405 may determine to trigger the CPA procedure to add the T-PSCell. As shown by reference numeral 466, the UE 405 may apply the configuration associated with the T-PSCell and may discard the CHO configuration. For example, the UE 405 may apply T-PSCell configuration that may be included in the CPA configuration information and may retain CHO configuration information to avoid collisions between subsequent CPA procedures and CHO procedures that may be triggered during the CPA procedure. As indicated by reference numeral 468, the UE 405 can communicate an RRC reconfiguration complete message to the S-MN 410. For example, based at least in part on applying the T-PSCell configuration in the CPA configuration information, the UE 405 may transmit an RRC reconfiguration complete message, which may correspond to an RRC reconfiguration message that includes the CPA configuration information. In this case, the RRC reconfiguration complete message may include information indicating that the CPA procedure is initiated for a specific T-PSCell.

As shown at reference numeral 470, in response to receiving the RRC reconfiguration complete message, the S-MN 410 can communicate with the first T-MN 415 and/or the second T-MN 420 to perform a handover modification procedure associated with the CHO procedure. For example, S-MN 410 may identify the updated CHO configuration and provide an RRC reconfiguration message identifying the updated CHO configuration as indicated by reference numeral 472. As shown at reference numeral 474, the UE 405, S-MN 410, T-MNs 415 and 420, and T-SNs 425 and 430 may communicate to complete one or more further steps of the CPA procedure in response to transmitting/receiving the RRC reconfiguration complete message.

As indicated above, fig. 4 is provided as an example. Other examples may differ from the example described with respect to fig. 4.

Fig. 5 is a diagram illustrating an example 500 associated with the disposition of CHO and CPAC according to the present disclosure. As shown in fig. 5, UE 505, S-MN 510, first T-MN 515, second T-MN 520, first T-SN 525, and second T-SN 530 may communicate with each other.

As shown by reference numeral 550, the UE 505 may transmit a measurement report to the S-MN 510. For example, UE 505 may transmit a measurement report associated with triggering the CPA procedure. As shown at 552, the S-MN 510, T-MNs 515 and 520, and T-SNs 525 and 530 may communicate in preparation for the CPA procedure. As indicated by reference numeral 554, the S-MN 510 may transmit a reconfiguration message to the UE 505. For example, the S-MN 510 can transmit an RRC reconfiguration message including the CPA configuration based at least in part on preparation for the CPA procedure.

As shown by reference numeral 556, the UE 505 may transmit a measurement report to the S-MN 510. For example, UE 505 may transmit a measurement report associated with triggering CHO procedures. As shown at 558, S-MN 510 and T-MNs 515 and 520 may communicate in preparation for CHO procedures. For example, when the UE 505 detects that a handoff condition is met, the S-MN 510 may identify a set of T-MNs (e.g., T-MNs 515 and 520) to which the UE 505 may handoff. As shown at reference numeral 560, the S-MN 510 may transmit a reconfiguration message to the UE 505. For example, S-MN 510 can transmit an RRC reconfiguration message including CHO configuration based at least in part on preparation for a CHO procedure. As indicated by reference numeral 562, based at least in part on receiving a reconfiguration message with a CPA configuration and a CHO configuration from the S-MN 510, the UE 505 may store the CPA configuration information and CHO configuration information and monitor whether conditions associated with triggering the CPA procedure or CHO procedure are met.

As shown by reference numeral 564, the UE 505 may determine that CHO procedure execution conditions are met. For example, UE 505 may determine to trigger CHO procedures to switch between master nodes. As shown at reference numeral 566, the UE 505 may apply a configuration associated with a target primary cell (T-PCell) and may discard the CPA configuration. For example, UE 505 may apply a T-PCell configuration that may be included in CHO configuration information and may discard CPA configuration information to avoid collisions between subsequent CHO procedures and CPA procedures that may be triggered during CHO procedures.

As shown at reference numeral 568, the UE 505 may communicate with a first T-MN 515 to perform a Random Access Channel (RACH) procedure on a T-PCell. For example, the UE 505 may transmit a message to the T-MN 515 to initiate a handoff to the T-PCell. As indicated by reference numeral 570, the UE 505 may transmit an RRC reconfiguration complete message to the S-MN 510. For example, based at least in part on applying the T-PCell configuration and performing the RACH procedure, UE 505 may transmit an RRC reconfiguration complete message, which may correspond to an RRC reconfiguration message including CHO configuration information. In this case, the first T-MN 515 may indicate to the S-MN 510 that the handover was successful as a result of the RACH procedure and the completion of the reception RRC reconfiguration, as indicated by reference numeral 572.

As shown at reference numeral 574, in response to receiving the handoff success message, the S-MN 510 can communicate with the T-MNs 515 and 520 and/or the T-SNs 525 and 530 to release resources associated with the T-SNs 525 and 530 and the CPA procedure. As shown at reference numeral 576, as a further response to transmitting/receiving the RRC reconfiguration complete message and the handover success message, the UE 505, S-MN 510, and T-MNs 515 and 520 may communicate to complete one or more further steps of the CHO procedure.

As indicated above, fig. 5 is provided as an example. Other examples may differ from the example described with respect to fig. 5.

Fig. 6 is a diagram illustrating an example 600 associated with the disposition of CHO and CPAC according to the present disclosure. As shown in fig. 6, a UE 605, an S-MN 610, a first T-MN 615, a second T-MN 620, a first T-SN 625, a second T-SN 630, and a third T-SN 635 may communicate with one another.

As shown by reference numeral 650, the UE 605 may transmit a measurement report to the S-MN 610. For example, UE 605 may transmit a measurement report associated with triggering a CHO procedure. As shown at reference numeral 652, the S-MN 610, the T-MNs 615 and 620, and the T-SNs 625 and 630 may communicate in preparation for CHO procedures and CPA procedures. For example, at 652 (a) and 652 (b), S-MN 610 can communicate handoff requests to T-MN 615 and T-MN 620, respectively. At 652 (c) and 652 (d), respectively, the first T-MN 615 may perform CPA preparation with the first T-SN 625, and the second T-MN 620 may perform CPA preparation with the second T-SN 630 and the third T-SN 635. At 652 (e) and 652 (f), S-MN 610 can receive a handoff request acknowledgement, which can include CPA configuration information, from first T-MN 615 and second T-MN 620, respectively. As indicated by reference numeral 654, the S-MN 610 can transmit a reconfiguration message to the UE 605. For example, S-MN 610 can transmit an RRC reconfiguration message including a CHO configuration including a CPA configuration based at least in part on preparation for the CHO procedure and the CPA procedure. Further details regarding CHO preparation and CPA preparation are described with reference to fig. 7. Based at least in part on receiving a reconfiguration message with CHO configuration and CPA configuration from S-MN 610, UE 605 may store CHO configuration information and CPA configuration information, as indicated by reference numeral 656, and measure whether T-PCell satisfies conditions associated with triggering CHO procedures or CPA procedures, as indicated by reference numeral 658.

As shown by reference numeral 660, the UE 605 may determine that CHO procedure execution conditions are met for the T-PCell. For example, the UE 605 may determine to trigger a CHO procedure to switch between master nodes. As indicated by reference numeral 662, the UE 605 can communicate with the first T-MN 615 to perform RACH procedures on a T-PCell. For example, the UE 605 may transmit a message to the T-MN 615 to initiate a handoff to the T-PCell. As shown at reference numeral 664, the UE 605 may transmit an RRC reconfiguration complete message to the S-MN 610. For example, based at least in part on performing the RACH procedure, UE 605 may transmit an RRC reconfiguration complete message, which may correspond to an RRC reconfiguration message that includes CHO configuration information. In this case, as shown by reference numeral 666, in response to transmitting/receiving the RRC reconfiguration complete message and the handover success message, the UE 605, the S-MN 610, and the T-MNs 615 and 620 may communicate to complete one or more further steps of the CHO procedure.

As shown by reference numeral 668, the UE 605 may measure the T-PSCell and determine that the CPA performance condition is met for a particular T-PSCell (corresponding to the first T-SN 625), as shown by reference numeral 670. For example, the UE 605 may determine to trigger the CPA procedure. As indicated by reference numeral 672, the UE 605 may perform RACH procedure on a specific T-PSCell of the first T-SN 625. As indicated by reference numeral 674, the UE 605 may transmit an RRC reconfiguration complete message to the first T-MN 615 (the first T-MN 615 to which the UE 605 was previously handed off). For example, based at least in part on performing a RACH procedure for a particular T-PSCell of the first T-SN 625, the UE 605 may transmit an RRC reconfiguration complete message that may correspond to an RRC reconfiguration message that includes CHO configuration information with CPA configuration information. As indicated by reference numeral 676, in response to receiving the RRC reconfiguration complete message, the UE 605, the first T-MN 615, and/or one or more of the T-SNs 625, 630, and 635 may perform one or more procedures to complete CPA execution.

As indicated above, fig. 6 is provided as an example. Other examples may differ from the example described with respect to fig. 6.

Fig. 7 is a diagram illustrating an example 700 associated with the disposition of CHO and CPAC according to the present disclosure. As shown in FIG. 7, S-MN 710, first T-MN 715, second T-MN 720, first T-SN 725, second T-SN 730, and third T-SN 735 may communicate with each other.

As in example 700 and shown with respect to the procedure of example 600, when S-MN 710 triggers CHO provisioning (e.g., by conveying handoff requests to T-MNs 715 and 720), each T-MN triggers CPA provisioning. For example, the first T-MN 715 triggers CPA preparation for the first T-SN 725. Additionally or alternatively, the second T-MN 720 triggers CPA preparation for the second T-SN 730 and the third T-SN 735.

As indicated above, fig. 7 is provided as an example. Other examples may differ from the example described with respect to fig. 7.

Fig. 8 is a diagram illustrating an example 800 associated with the disposition of CHO and CPAC according to the present disclosure. As shown in fig. 8, UE 805, S-MN 810, first T-MN 815, second T-MN 820, first target T-SN 825, and second T-SN 830 may communicate with each other.

As shown by reference numeral 850, the UE 805 can transmit a measurement report associated with triggering a CPC procedure to the S-MN 810. As shown by reference numeral 852, S-MN 810, T-MNs 815 and 820, and T-SNs 825 and 830 may communicate to prepare a CPC procedure. As shown by reference numeral 854, the S-MN 810 can transmit an RRC reconfiguration message including a CPC configuration to the UE 805 based at least in part on preparation for the CPC procedure.

As shown by reference numeral 856, the UE 805 may transmit a measurement report associated with triggering CHO procedures to the S-MN 810. As shown at reference numeral 858, S-MN 810 and T-MNs 815 and 820 may communicate in preparation for CHO procedures. As shown by reference numeral 860, the S-MN 810 can transmit a reconfiguration message including a CHO configuration to the UE 805 based at least in part on preparation for the CHO procedure. As shown at reference numeral 862, based at least in part on receiving a reconfiguration message with CPC configuration and CHO configuration from S-MN 810, UE 805 may store the CPC configuration information and CHO configuration information and monitor whether conditions associated with triggering the CPC procedure or CHO procedure are met.

As shown by reference numeral 864, the UE 805 may determine that a CPC execution condition is satisfied. For example, the UE 805 may determine to trigger a CPC procedure to change the T-PSCell. As shown by reference numeral 866, the UE 805 may apply the configuration associated with the T-PSCell and may discard the CHO configuration. For example, the UE 805 may apply the T-PSCell configuration that may be included in the CPC configuration information and may discard CHO configuration information to avoid collisions between subsequent CPC procedures and CHO procedures that may be triggered during the CPC procedure.

As shown by reference numeral 868, the UE 805 may transmit an RRC reconfiguration complete message to the S-MN 810. For example, based at least in part on applying the T-PSCell configuration in the CPC configuration information, the UE 805 may transmit an RRC reconfiguration complete message, which may correspond to an RRC reconfiguration message that includes the CPC configuration information. In this case, the RRC reconfiguration complete message may include information indicating that the CPC procedure is initiated for a specific T-PSCell.

As shown at reference numeral 870, in response to receiving the RRC reconfiguration complete message, the S-MN 810 can communicate with the first T-MN 815 and/or the second T-MN 820 to perform a handover cancel procedure associated with the CHO procedure. As shown at reference numeral 872, as a further response to transmitting/receiving the RRC reconfiguration complete message, the UE 805, S-MN 810, T-MNs 815 and 820, and T-SNs 825 and 830 may communicate to complete one or more further steps of the CPC procedure.

As indicated above, fig. 8 is provided as an example. Other examples may differ from the example described with respect to fig. 8.

Fig. 9 is a diagram illustrating an example 900 associated with the disposition of CHO and CPAC according to the present disclosure. As shown in FIG. 9, the UE 905, the S-MN 910, the first T-MN 915, the second T-MN 920, and the S-SN 925 may communicate with each other.

As shown by reference numeral 950, the UE 905 can transmit a measurement report associated with the trigger procedure to the S-SN 925. For example, the UE 905 may transmit a measurement report associated with triggering an intra-secondary node (intra-SN) CPC procedure. The S-SN 925 may prepare for an intra-SN CPC procedure, as shown by reference numeral 952. As shown by reference numeral 954, the S-SN 925 can transmit an RRC reconfiguration message including a CPC configuration to the UE 905 based at least in part on preparation for the intra-SN CPC procedure.

As shown by reference numeral 956, the UE 905 can transmit a measurement report associated with triggering CHO procedures to the S-MN 910. As shown at reference numeral 958, S-MN 910 and T-MNs 915 and 920 may communicate in preparation for the CHO procedure. As shown by reference numeral 960, the S-MN 910 may transmit a reconfiguration message including a CHO configuration to the UE 905 based at least in part on preparation for the CHO procedure. As shown by reference numeral 962, the UE 905 can store CPC configuration information and CHO configuration information and monitor whether conditions associated with triggering a CPC procedure or CHO procedure are met based at least in part on receiving reconfiguration messages having CPC configuration and CHO configuration from the S-SN 925 and S-MN 910, respectively.

As shown by reference numeral 964, the UE 905 may determine that the CPC performance condition is satisfied. For example, the UE 905 may determine to trigger a CPC procedure to change T-PSCell. As shown by reference numeral 966, the UE 905 may apply the configuration associated with the T-PSCell and may discard the CHO configuration. For example, the UE 905 may apply the T-PSCell configuration that may be included in the CPC configuration information and may discard CHO configuration information to avoid collisions between subsequent CPC procedures and CHO procedures that may be triggered during the CPC procedure.

As shown by reference numeral 968, the UE 905 may transmit an RRC reconfiguration complete message to the S-SN 925. For example, based at least in part on applying the T-PSCell configuration in the CPC configuration information, the UE 905 may transmit an RRC reconfiguration complete message, which may correspond to an RRC reconfiguration message that includes the CPC configuration information. In this case, the RRC reconfiguration complete message may include information indicating that the CPC procedure is initiated for a specific T-PSCell.

In response to receiving the RRC reconfiguration complete message, the S-SN 925 may transmit a Secondary Node (SN) modification request message to the S-MN 910 indicating a change to the PSCell, as indicated by reference numeral 970, and the S-MN 910 may communicate with the first T-MN 915 and/or the second T-MN 920 to perform a handover cancel procedure associated with the CHO procedure, as indicated by reference numeral 972. As shown at reference numeral 974, as another response to transmitting/receiving the RRC reconfiguration complete message, the UE 905, the S-MN 910, and the S-SN 925 may communicate to complete one or more further steps of the CPC procedure.

As indicated above, fig. 9 is provided as an example. Other examples may differ from the example described with respect to fig. 9.

Fig. 10 is a diagram illustrating an example process 1000 performed, for example, by a UE, in accordance with the present disclosure. Example process 1000 is an example in which a UE (e.g., UE 120 or one or more of the UEs of fig. 3-9) performs operations associated with the handling of CHO and CPAC.

As shown in fig. 10, in some aspects, process 1000 may include initiating one of a CHO procedure or a CPAC procedure (block 1010). For example, the UE (e.g., using the initiating component 1208 depicted in fig. 12) may initiate one of a CHO procedure or a CPAC procedure, as described above in connection with fig. 3-9.

As further shown in fig. 10, in some aspects, process 1000 may include performing a response action with respect to a configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure (block 1020). For example, the UE (e.g., using the execution component 1210 depicted in fig. 12) may perform a responsive action regarding the configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure, as described above in connection with fig. 3-9.

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.

In a first aspect, the CPAC procedure is a CPA procedure or a CPC procedure.

In a second aspect, alone or in combination with the first aspect, the process 1000 includes determining that a CPAC execution condition is met; and initiate the CPAC procedure based at least in part on determining that the CPAC execution condition is met.

In a third aspect, alone or in combination with one or more of the first and second aspects, process 1000 includes: CHO configurations associated with the CHO procedure are discarded.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process 1000 includes: a reconfiguration complete message is transmitted to trigger a handover cancel and release the reserved resources of the UE and the UE context of the UE.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the process 1000 comprises: maintaining the CHO configuration associated with the CHO procedure; and discarding one or more measurements associated with one or more target cells in conjunction with the CHO configuration associated with the CHO procedure.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, process 1000 includes transmitting a reconfiguration complete message to cause CHO modification; and receiving an updated CHO configuration based at least in part on transmitting the reconfiguration complete message to cause the CHO modification.

In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the CHO modification comprises a multi-radio access technology dual connectivity (MR-DC) configuration as a source configuration.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, process 1000 includes receiving an RRC reconfiguration message including a CHO configuration associated with the CHO procedure, wherein the RRC message includes an indicator of whether to maintain the CHO configuration of a target primary and secondary cell set when the CPAC procedure is triggered; and selecting whether to discard or maintain the CHO configuration based at least in part on the indicator.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the process 1000 comprises: determining that CHO procedure execution conditions are met; and initiating the CHO procedure based at least in part on determining that the CHO procedure execution condition is met.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, the process 1000 includes discarding the CPAC configuration associated with the CPAC procedure.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the process 1000 includes completing a secondary node release procedure in combination with a handover success message.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, the process 1000 includes determining that CHO procedure execution conditions and CPAC procedure execution conditions are met; and initiating the CHO procedure based at least in part on determining that the CHO procedure execution condition and the CPAC procedure execution condition are met.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the process 1000 includes performing a set of measurements on a target primary cell set configured for the CHO procedure; selecting a target primary cell in the set of target primary cells based at least in part on the set of measurements; communicating with the target primary cell to access the target primary cell; performing a set of measurements on a target primary and secondary set of cells based at least in part on accessing the target primary cell; adding or changing a target primary secondary cell in the set of target primary secondary cells configured for the CPAC procedure based at least in part on the set of measurement and selection procedures; and communicating with the target primary and secondary cells to access the target primary and secondary cells.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the process 1000 includes: applying target primary and secondary cell configuration; and discarding the CHO configuration based at least in part on applying the target primary and secondary cell configuration.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, the process 1000 includes discarding intra-SN CPC configurations associated with the CPC procedure.

While fig. 10 shows example blocks of process 1000, in some aspects process 1000 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than depicted in fig. 10. Additionally or alternatively, two or more blocks of process 1000 may be performed in parallel.

Fig. 11 is a diagram illustrating an example process 1100 performed, for example, by a wireless node, in accordance with the present disclosure. Example process 1100 is an example in which a wireless node (e.g., base station 110 or one or more of the nodes of fig. 3-9) performs operations associated with the handling of CHO and CPC.

As shown in fig. 11, in some aspects, the process 1100 may include performing one of a CHO procedure or a CPAC procedure (block 1110). For example, the wireless node (e.g., using the initiating component 1308 depicted in fig. 13) may perform one of a CHO procedure or a CPAC procedure, as described above in connection with fig. 3-9.

As further shown in fig. 11, in some aspects, process 1100 may include performing a response action with respect to a configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure (block 1120). For example, a wireless node (e.g., using the execution component 1310 depicted in fig. 13) may perform a responsive action regarding the configuration of one of the CHO procedure or the CPAC procedure based at least in part on executing the other of the CHO procedure or the CPAC procedure, as described above in connection with fig. 3-9.

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.

In a first aspect, the CPAC procedure is a CPA procedure or a CPC procedure.

In a second aspect, alone or in combination with the first aspect, the process 1100 includes determining that a CPAC execution condition is met; and initiate the CPAC procedure based at least in part on determining that the CPAC execution condition is met.

In a third aspect, alone or in combination with one or more of the first and second aspects, process 1100 includes: receiving a reconfiguration complete message; and triggering a handover cancel and releasing reserved resources of the UE and a UE context of the UE based at least in part on receiving the reconfiguration complete message.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the process 1100 comprises: receiving a reconfiguration complete message; triggering CHO modification to the target set of master nodes based at least in part on receiving the reconfiguration complete message; and providing a updated CHO configuration based at least in part on triggering the CHO modification.

In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the CHO modification comprises an MR-DC configuration as a source configuration.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, process 1100 includes transmitting an RRC reconfiguration message including a CHO configuration associated with the CHO procedure, wherein the RRC message includes an indicator of whether to maintain the CHO configuration of a target primary and secondary cell set when the CPAC procedure is triggered.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the process 1100 comprises: determining that CHO procedure execution conditions are met; and executing the CHO procedure based at least in part on determining that the CHO procedure execution condition is met.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the process 1100 includes identifying a handover success based at least in part on receiving the handover success message; and performing one or more secondary node release procedures.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the process 1100 comprises: determining that CHO procedure execution conditions and CPAC procedure execution conditions are met; and executing the CHO procedure based at least in part on determining that the CHO procedure execution condition and the CPAC procedure execution condition are met.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, process 1100 includes performing an access and handover procedure on a selected target primary cell in a set of target primary cells configured for the CHO procedure; and performing an access and primary-secondary cell addition or change procedure for a selected target primary-secondary cell in a set of target primary-secondary cells configured for the CPAC procedure.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the process 1100 includes receiving an indication of a configuration of an intra-SN CPC associated with the CPC procedure; and triggering release of reserved resources based at least in part on receiving the indication of the configuration of the intra-SN CPC.

While fig. 11 shows example blocks of the process 1100, in some aspects the process 1100 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than depicted in fig. 11. Additionally or alternatively, two or more blocks of process 1100 may be performed in parallel.

Fig. 12 is a block diagram of an example apparatus 1200 for wireless communications. The apparatus 1200 may be a UE, or the UE may include the apparatus 1200. In some aspects, apparatus 1200 includes a receiving component 1202 and a transmitting component 1204 that can be in communication 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 base station, or another wireless communication device) using a receiving component 1202 and a transmitting component 1204. As further shown, the device 1200 can include one or more of an initiating component 1208 or an executing component 1210, or the like.

In some aspects, the apparatus 1200 may be configured to perform one or more operations described herein in connection with fig. 3-9. Additionally or alternatively, the apparatus 1200 may be configured to perform one or more processes described herein, such as process 1000 of fig. 10. In some aspects, apparatus 1200 and/or one or more components shown in fig. 12 may comprise one or more components of a UE described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 12 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in 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 executed by a controller or processor to perform the functions or operations of the component.

The receiving component 1202 may receive communications (such as reference signals, control information, data communications, or a combination thereof) from the device 1206. The receiving component 1202 may provide the received communication to one or more other components of the apparatus 1200. In some aspects, the receiving component 1202 may perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation or decoding, etc.) on the received communication and may provide the processed signal to one or more other components of the apparatus 1206. In some aspects, the receiving component 1202 may include one or more antennas, demodulators, MIMO detectors, receive processors, controllers/processors, memories, or a combination thereof for a UE as described above in connection with fig. 2.

The transmission component 1204 can transmit a communication (such as a reference signal, control information, data communication, or a combination thereof) to the device 1206. In some aspects, one or more other components of the apparatus 1206 may generate a communication and may provide the generated communication to the transmission component 1204 for transmission to the apparatus 1206. In some aspects, the transmission component 1204 can perform signal processing (such as filtering, amplifying, modulating, digital-to-analog converting, multiplexing, interleaving, mapping, encoding, etc.) on the generated communication and can transmit the processed signal to the device 1206. In some aspects, the transmission component 1204 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memories, or combinations thereof of the UE described above in connection with fig. 2. In some aspects, the transmission component 1204 may be co-located with the reception component 1202 in a transceiver.

Initiating component 1208 may perform one of a CHO procedure or a CPAC procedure. The execution component 1210 can perform a responsive action with respect to configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

The number and arrangement of components shown in fig. 12 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 12. Further, two or more components shown in fig. 12 may be implemented within a single component, or a single component shown in fig. 12 may be implemented as multiple distributed components. Additionally or alternatively, a set of components (e.g., one or more components) shown in fig. 12 may perform one or more functions described as being performed by another set of components shown in fig. 12.

Fig. 13 is a block diagram of an example apparatus 1300 for wireless communication. The device 1300 may be a wireless node or the wireless node may comprise the device 1300. In some aspects, apparatus 1300 includes a receiving component 1302 and a transmitting component 1304 that can be in communication with each other (e.g., via one or more buses and/or one or more other components). As shown, apparatus 1300 may communicate with another apparatus 1306 (such as a UE, a base station, or another wireless communication device) using a receiving component 1302 and a transmitting component 1304. As further illustrated, the apparatus 1300 may include one or more of an initiating component 1308 or an executing component 1310, etc.

In some aspects, the apparatus 1300 may be configured to perform one or more of the operations described herein in connection with fig. 3-9. Additionally or alternatively, the apparatus 1300 may be configured to perform one or more processes described herein, such as process 1100 of fig. 11. In some aspects, the apparatus 1300 and/or one or more components shown in fig. 13 may comprise one or more components of the wireless node described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 13 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in 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 executed by a controller or processor to perform the functions or operations of the component.

The receiving component 1302 can receive a communication (such as a reference signal, control information, data communication, or a combination thereof) from a device 1306. The receiving component 1302 can provide the received communication to one or more other components of the apparatus 1300. In some aspects, the receiving component 1302 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation or decoding, etc.) on the received communication and can provide the processed signal to one or more other components of the apparatus 1306. In some aspects, the receiving component 1302 can include one or more antennas, demodulators, MIMO detectors, receive processors, controllers/processors, memory, or a combination thereof for a wireless node described above in connection with fig. 2.

The transmission component 1304 may transmit a communication (such as a reference signal, control information, data communication, or a combination thereof) to the device 1306. In some aspects, one or more other components of the device 1306 may generate a communication and may provide the generated communication to the transmission component 1304 for transmission to the device 1306. In some aspects, the transmission component 1304 may perform signal processing (such as filtering, amplifying, modulating, digital-to-analog converting, multiplexing, interleaving, mapping, encoding, etc.) on the generated communication and may transmit the processed signal to the device 1306. In some aspects, the transmission component 1304 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memories, or combinations thereof of the wireless node described above in connection with fig. 2. In some aspects, the transmission component 1304 may be co-located with the reception component 1302 in a transceiver.

The execution component 1310 may execute one of a CHO procedure or a CPAC procedure. The execution component 1310 can perform a responsive action with respect to configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure. The initiate component 1308 may enable initiation of one of a CHO procedure or a CPAC procedure.

The number and arrangement of components shown in fig. 13 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 13. Further, two or more components shown in fig. 13 may be implemented within a single component, or a single component shown in fig. 13 may be implemented as multiple distributed components. Additionally or alternatively, a set of components (e.g., one or more components) shown in fig. 13 may perform one or more functions described as being performed by another set of components shown in fig. 13.

The following provides an overview of some aspects of the disclosure:

aspect 1: a method of wireless communication performed by a User Equipment (UE), comprising: initiating one of a Conditional Handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

Aspect 2: the method of aspect 1, wherein the CPAC procedure is a conditional primary secondary cell addition (CPA) procedure or a conditional primary secondary cell change (CPC) procedure.

Aspect 3: the method of any one of aspects 1 to 2, comprising: determining that the CPAC execution condition is satisfied; and initiate the CPAC procedure based at least in part on determining that the CPAC execution condition is met.

Aspect 4: the method of aspect 3, comprising: CHO configurations associated with the CHO procedure are discarded.

Aspect 5: the method of any one of aspects 3 to 4, further comprising: a reconfiguration complete message is transmitted to trigger a handover cancel and release the reserved resources of the UE and the UE context of the UE.

Aspect 6: the method of any one of aspects 3 to 5, comprising: maintaining the CHO configuration associated with the CHO procedure; and discarding one or more measurements associated with one or more target cells in conjunction with the CHO configuration associated with the CHO procedure.

Aspect 7: the method of aspect 6, further comprising: transmitting a reconfiguration complete message to cause CHO modification; and receiving an updated CHO configuration based at least in part on transmitting the reconfiguration complete message to cause the CHO modification.

Aspect 8: the method of aspect 7, wherein the CHO modification comprises a multi-radio access technology dual connectivity (MR-DC) configuration as a source configuration.

Aspect 9: the method of any one of aspects 3 to 8, further comprising: receiving a Radio Resource Control (RRC) reconfiguration message including a CHO configuration associated with the CHO procedure, wherein the RRC message includes an indicator of whether to maintain the CHO configuration of a target primary and secondary cell set when the CPAC procedure is triggered; and selecting whether to discard or maintain the CHO configuration based at least in part on the indicator.

Aspect 10: the method of aspect 1, comprising: determining that CHO procedure execution conditions are met; and initiating the CHO procedure based at least in part on determining that the CHO procedure execution condition is met.

Aspect 11: the method of aspect 10, comprising: the CPAC configuration associated with the CPAC procedure is discarded.

Aspect 12: the method of aspect 11, further comprising: the secondary node release procedure is completed in conjunction with the handover success message.

Aspect 13: the method of any one of aspects 1 to 12, comprising: determining that CHO procedure execution conditions and CPAC procedure execution conditions are met; and initiating the CHO procedure based at least in part on determining that the CHO procedure execution condition and the CPAC procedure execution condition are met.

Aspect 14: the method of any one of aspects 1 to 13, comprising: performing a set of measurements on a target primary cell set configured for the CHO procedure; selecting a target primary cell in the set of target primary cells based at least in part on the set of measurements; communicating with the target primary cell to access the target primary cell; performing a set of measurements on a target primary and secondary set of cells based at least in part on accessing the target primary cell; adding or changing a target primary secondary cell in the set of target primary secondary cells configured for the CPAC procedure based at least in part on the set of measurement and selection procedures; and communicating with the target primary and secondary cells to access the target primary and secondary cells.

Aspect 15: the method of any one of aspects 1 to 14, comprising: applying target primary and secondary cell configuration; and discarding the CHO configuration based at least in part on applying the target primary and secondary cell configuration.

Aspect 16: the method of any one of aspects 1 to 15, comprising: a conditional primary secondary cell change (CPC) configuration within a Secondary Node (SN) associated with the conditional primary secondary cell change (CPC) procedure is discarded.

Aspect 17: a method of wireless communication performed by a wireless node, comprising: performing one of a Conditional Handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure; and performing a responsive action regarding configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure.

Aspect 18: the method of aspect 17, wherein the CPAC procedure is a conditional primary secondary cell addition (CPA) procedure or a conditional primary secondary cell change (CPC) procedure.

Aspect 19: the method of any one of aspects 17 to 18, comprising: determining that the CPAC execution condition is satisfied; and performing the CPAC procedure based at least in part on determining that the CPAC performance condition is met.

Aspect 20: the method of aspect 19, further comprising: receiving a reconfiguration complete message; and triggering a handover cancel and releasing reserved resources of a User Equipment (UE) and a UE context of the UE based at least in part on receiving the reconfiguration complete message.

Aspect 21: the method of any one of aspects 19 to 20, further comprising: receiving a reconfiguration complete message; triggering CHO modification to the target set of master nodes based at least in part on receiving the reconfiguration complete message; and providing a updated CHO configuration based at least in part on triggering the CHO modification.

Aspect 22: the method of aspect 21, wherein the CHO modification comprises a multi-radio access technology dual connectivity (MR-DC) configuration as a source configuration.

Aspect 23: the method of any one of aspects 19 to 22, further comprising: a Radio Resource Control (RRC) reconfiguration message is transmitted that includes a CHO configuration associated with the CHO procedure, wherein the RRC message includes an indicator of whether the CHO configuration of the target primary and secondary cell set is maintained when the CPAC procedure is triggered.

Aspect 24: the method of aspect 17, comprising: determining that CHO procedure execution conditions are met; and executing the CHO procedure based at least in part on determining that the CHO procedure execution condition is met.

Aspect 25: the method of aspect 24, comprising: identifying a handover success based at least in part on receiving the handover success message; and performing one or more secondary node release procedures.

Aspect 26: the method of any one of aspects 17 to 25, comprising: determining that CHO procedure execution conditions and CPAC procedure execution conditions are met; and executing the CHO procedure based at least in part on determining that the CHO procedure execution condition and the CPAC procedure execution condition are met.

Aspect 27: the method of any one of aspects 17 to 26, comprising: performing access and handover procedures for selected target primary cells in a set of target primary cells configured for the CHO procedure; and performing an access and primary-secondary cell addition or change procedure for a selected target primary-secondary cell in a set of target primary-secondary cells configured for the CPAC procedure.

Aspect 28: the method of any one of aspects 17 to 27, comprising: receiving an indication of a configuration of a conditional primary secondary cell change (CPC) within a Secondary Node (SN) associated with the conditional primary secondary cell change (CPC) procedure; and triggering release of reserved resources based at least in part on receiving the indication of the configuration of the intra-SN CPC.

Aspect 29: an apparatus for wireless communication at a device, 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 the method as in one or more of aspects 1-16.

Aspect 30: an apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of one or more of aspects 1-16.

Aspect 31: an apparatus for wireless communication, comprising at least one means for performing the method of one or more of aspects 1-16.

Aspect 32: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform a method as one or more of aspects 1-16.

Aspect 33: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method as in one or more of aspects 1-16.

Aspect 34: an apparatus for wireless communication at a device, 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 a method as in one or more of aspects 17-28.

Aspect 35: an apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors configured to perform the method of one or more of aspects 17-28.

Aspect 36: an apparatus for wireless communication, comprising at least one means for performing a method as in one or more of aspects 17-28.

Aspect 37: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform a method as one or more of aspects 17-28.

Aspect 38: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method as in one or more of aspects 17-28.

The foregoing disclosure provides insight and description, but is not intended to be exhaustive or to limit aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.

As used herein, the term "component" is intended to be broadly interpreted as hardware and/or a combination of hardware and software. "software" should be construed broadly to mean instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, etc., whether described in software, firmware, middleware, microcode, hardware description language, or other terminology. As used herein, a "processor" is implemented in hardware, and/or a combination of hardware and software. It will be apparent that the systems and/or methods described herein may be implemented in different forms of hardware, and/or combinations of hardware and software. The actual specialized control hardware or software code used to implement the systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods were described herein without reference to the specific software code-as one of ordinary skill in the art would understand that software and hardware could be designed to implement the systems and/or methods based at least in part on the description herein.

As used herein, a "meeting a threshold" may refer to a value greater than a threshold, greater than or equal to a threshold, less than or equal to a threshold, not equal to a threshold, etc., depending on the context.

Although specific combinations of features are recited in the claims and/or disclosed in the specification, such combinations are not intended to limit the disclosure of the various aspects. Many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. The disclosure of the various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, a phrase referring to a list of items "at least one of" refers to any combination of these items, including individual members. As an example, "at least one of a, b, or c" is intended to encompass: a. b, c, a+b, a+c, b+c, and a+b+c, as well as any combination having 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).

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Moreover, as used herein, the articles "a" and "an" are intended to include one or more items, and may be used interchangeably with "one or more". Furthermore, as used herein, the article "the" is intended to include one or more items referenced in conjunction with the article "the" and may be used interchangeably with "one or more". Furthermore, as used herein, the terms "set" and "group" are intended to include one or more items, and may be used interchangeably with "one or more". Where only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, the terms "having," "containing," "including," and the like are intended to be open ended terms that do not limit the element they modify (e.g., the element "having" a can also have B). Furthermore, the phrase "based on" is intended to mean "based, at least in part, on" unless explicitly stated otherwise. Also, as used herein, the term "or" when used in a sequence is intended to be inclusive and may be used interchangeably with "and/or" unless otherwise specifically stated (e.g., where used in conjunction with "any one of" or "only one of").

Claims (30)

1. A User Equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory and configured to:

initiating one of a Conditional Handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure; and

a response action is performed with respect to a configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

2. The UE of claim 1, wherein the CPAC procedure is a conditional primary secondary cell addition (CPA) procedure or a conditional primary secondary cell change (CPC) procedure.

3. The UE of claim 1, wherein to initiate one of the CHO procedure or the CPAC procedure, the one or more processors are configured to:

determining that the CPAC execution condition is satisfied; and

the CPAC procedure is initiated based at least in part on determining that the CPAC execution condition is satisfied.

4. The UE of claim 3, wherein to perform the responsive action, the one or more processors are configured to:

CHO configurations associated with the CHO procedure are discarded.

5. The UE of claim 3, wherein the one or more processors are further configured to:

and transmitting a reconfiguration complete message to trigger the handover cancellation and release the reserved resources of the UE and the UE context of the UE.

6. The UE of claim 3, wherein to perform the responsive action, the one or more processors are configured to:

maintaining a CHO configuration associated with the CHO procedure; and

one or more measurements associated with one or more target cells are relinquished in connection with the CHO configuration associated with the CHO procedure.

7. The UE of claim 6, wherein the one or more processors are further configured to:

transmitting a reconfiguration complete message to cause CHO modification; and

the updated CHO configuration is received based at least in part on transmitting the reconfiguration complete message to cause the CHO modification.

8. The UE of claim 7, wherein the CHO modification comprises a multi-radio access technology dual connectivity (MR-DC) configuration as a source configuration.

9. The UE of claim 3, wherein the one or more processors are further configured to:

receiving a Radio Resource Control (RRC) reconfiguration message including a CHO configuration associated with the CHO procedure, wherein the RRC message includes an indicator of whether to maintain the CHO configuration of a target primary and secondary cell set when the CPAC procedure is triggered; and

Whether to discard or maintain the CHO configuration is selected based at least in part on the indicator.

10. The UE of claim 1, wherein to initiate one of the CHO procedure or the CPAC procedure, the one or more processors are configured to:

determining that CHO procedure execution conditions are met; and

the CHO procedure is initiated based at least in part on determining that the CHO procedure execution condition is met.

11. The UE of claim 10, wherein to perform the responsive action, the one or more processors are configured to:

discarding the CPAC configuration associated with the CPAC procedure.

12. The UE of claim 11, wherein the one or more processors are further configured to:

the secondary node release procedure is completed in conjunction with the handover success message.

13. The UE of claim 1, wherein to initiate one of the CHO procedure or the CPAC procedure, the one or more processors are configured to:

determining that CHO procedure execution conditions and CPAC procedure execution conditions are met; and

initiating the CHO procedure based at least in part on determining that the CHO procedure execution condition and the CPAC procedure execution condition are met.

14. The UE of claim 1, wherein to perform the responsive action, the one or more processors are configured to:

performing a set of measurements on a target primary cell set configured for the CHO procedure;

selecting a target primary cell of the set of target primary cells based at least in part on the set of measurements;

communicating with the target primary cell to access the target primary cell;

performing a set of measurements on a target primary and secondary set of cells based at least in part on accessing the target primary cell; and

adding or changing a target primary secondary cell of the set of target primary secondary cells configured for the CPAC procedure based at least in part on the set of measurement and selection procedures; and

communicate with the target primary and secondary cells to access the target primary and secondary cells.

15. The UE of claim 1, wherein to perform the responsive action, the one or more processors are configured to:

applying target primary and secondary cell configuration; and

the CHO configuration is discarded based at least in part on applying the target primary and secondary cell configuration.

16. The UE of claim 1, wherein to perform the responsive action, the one or more processors are configured to:

A conditional primary secondary cell change (CPC) configuration within a Secondary Node (SN) associated with the conditional primary secondary cell change (CPC) procedure is discarded.

17. A wireless node for wireless communication, comprising:

a memory; and

one or more processors coupled to the memory and configured to:

performing one of a Conditional Handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure; and

a response action is performed with respect to a configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure.

18. The wireless node of claim 17, wherein the CPAC procedure is a conditional primary secondary cell addition (CPA) procedure or a conditional primary secondary cell change (CPC) procedure.

19. The wireless node of claim 17, wherein to perform one of the CHO procedure or the CPAC procedure, the one or more processors are configured to:

determining that the CPAC execution condition is satisfied; and

the CPAC procedure is performed based at least in part on determining that the CPAC performance condition is met.

20. The wireless node of claim 19 wherein the one or more processors are further configured to:

receiving a reconfiguration complete message; and

triggering a handover cancel and releasing reserved resources of a User Equipment (UE) and a UE context of the UE based at least in part on receiving the reconfiguration complete message.

21. The wireless node of claim 19 wherein the one or more processors are further configured to:

receiving a reconfiguration complete message;

triggering CHO modification to a target set of master nodes based at least in part on receiving the reconfiguration complete message; and

the updated CHO configuration is provided based at least in part on triggering the CHO modification.

22. The wireless node of claim 21, wherein the CHO modification comprises a multi-radio access technology dual connectivity (MR-DC) configuration as a source configuration.

23. The wireless node of claim 19 wherein the one or more processors are further configured to:

a Radio Resource Control (RRC) reconfiguration message is transmitted that includes a CHO configuration associated with the CHO procedure, wherein the RRC message includes an indicator of whether to maintain the CHO configuration of a target primary and secondary cell set when the CPAC procedure is triggered.

24. The wireless node of claim 17, wherein to perform one of the CHO procedure or the CPAC procedure, the one or more processors are configured to:

determining that CHO procedure execution conditions are met; and

the CHO procedure is performed based at least in part on determining that the CHO procedure performance condition is met.

25. The wireless node of claim 24 wherein to perform the responsive action, the one or more processors are configured to:

identifying a handover success based at least in part on receiving the handover success message; and

one or more secondary node release procedures are performed.

26. The wireless node of claim 17, wherein to perform one of the CHO procedure or the CPAC procedure, the one or more processors are configured to:

determining that CHO procedure execution conditions and CPAC procedure execution conditions are met; and

the CHO procedure is performed based at least in part on determining that the CHO procedure execution condition and the CPAC procedure execution condition are met.

27. The wireless node of claim 17, wherein to perform the responsive action, the one or more processors are configured to:

performing access and handover procedures for selected target primary cells in a set of target primary cells configured for the CHO procedure; and

Performing access and primary-secondary cell addition or change procedures for selected target primary-secondary cells in a set of target primary-secondary cells configured for the CPAC procedure.

28. The wireless node of claim 17, wherein to perform the responsive action, the one or more processors are configured to:

receiving an indication of a configuration of a conditional primary secondary cell change (CPC) within a Secondary Node (SN) associated with the conditional primary secondary cell change (CPC) procedure; and

triggering release of reserved resources based at least in part on receiving the indication of the configuration of the intra-SN CPC.

29. A method of wireless communication performed by a User Equipment (UE), comprising:

initiating one of a Conditional Handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure; and

a response action is performed with respect to a configuration of one of the CHO procedure or the CPAC procedure based at least in part on initiating the other of the CHO procedure or the CPAC procedure.

30. A method of wireless communication performed by a wireless node, comprising:

performing one of a Conditional Handover (CHO) procedure or a conditional primary secondary cell addition/change (CPAC) procedure; and

A response action is performed with respect to a configuration of one of the CHO procedure or the CPAC procedure based at least in part on performing the other of the CHO procedure or the CPAC procedure.