Secondary cell group activation via bandwidth portion for dual connectivity with multiple radio access technologies

Abstract

In summary, various aspects of the present disclosure relate to wireless communications. In some aspects, a user equipment (UE) may operate in one of an SCG dormant state in a dormant downlink bandwidth part (BWP) of a primary and secondary cell configured for the SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the primary and secondary cell, in conjunction with a secondary cell group (SCG) for multi-radio access technology dual connectivity. The UE may receive a control message associated with activating the SCG for the UE, the control message indicating a BWP switch for the UE. The UE may, in conjunction with receiving the control message, switch from one of the dormant downlink BWP or the enhanced dormant downlink BWP to an activated downlink BWP, in which the UE operates in an SCG activated state. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 047,200, filed on July 1, 2020, entitled “SECONDARY CELL GROUP ACTIVATION BY BANDWIDTH PART FOR DUAL CONNECTIVITY WITH MULTIPLE RADIO ACCESS TECHNOLOGIES,” and U.S. Non-Provisional Patent Application No. 17 / 304,411, filed on June 21, 2021, entitled “SECONDARY CELL GROUP ACTIVATION BY BANDWIDTH PART FOR DUAL CONNECTIVITY WITH MULTIPLE RADIO ACCESS TECHNOLOGIES,” which are expressly incorporated herein by reference. Technical Field

[0003]

[0006] Generally speaking, aspects of the present disclosure relate to wireless communications, and aspects of the present disclosure relate to techniques and apparatus for secondary cell group activation over a bandwidth portion for dual connectivity with multiple radio access technologies. Background Art

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

[0005] A wireless network may include multiple base stations (BSs) capable of supporting communications for multiple user equipment (UEs). The UEs may communicate with the BSs via downlinks and uplinks. A "downlink" or "forward link" refers to the communication link from the BS to the UEs, and an "uplink" or "reverse link" refers to the communication link from the UEs to the BSs. As will be described in greater detail herein, a BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, or 5G Node B.

[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at a city, country, region, and even global level. NR (which may also be referred to as 5G) is a set of enhancements to the LTE mobile standard released by 3GPP. NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink (DL) and CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), thereby better supporting mobile broadband Internet access, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements to LTE, NR, and other wireless access technologies. Summary of the Invention

[0007] In some aspects, a method of wireless communication performed by a user equipment (UE) may include: in conjunction with a secondary cell group (SCG) for multi-radio access technology dual connectivity (MR-DC), operating in one of an SCG dormant state in a dormant downlink bandwidth part (BWP) of a primary and secondary cell configured for the SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the primary and secondary cell. The method may include: receiving a control message associated with activating the SCG for the UE, the control message indicating BWP switching for the UE; and, in conjunction with receiving the control message, switching from one of the dormant downlink BWP or the enhanced dormant downlink BWP to an active downlink BWP, in which the UE operates in the SCG activated state.

[0008] In some aspects, a method of wireless communication performed by a network node may include, in conjunction with MR-DC, determining to direct a UE to enter one of an SCG dormant state, an SCG enhanced dormant state, or an SCG activated state. The method may include sending a control message to the UE, the control message instructing the UE to switch to one of: a dormant downlink BWP configured for a primary or secondary cell of the SCG to operate in the SCG dormant state; an enhanced dormant downlink BWP configured for the primary or secondary cell to operate in the SCG enhanced dormant state; or an activated downlink BWP configured for the primary or secondary cell to operate in the SCG activated state.

[0009] In some aspects, a UE for wireless communication includes a memory and one or more processors coupled to the memory. The one or more processors can be configured to: in conjunction with an SCG for MR-DC, operate in one of an SCG dormant state in a dormant downlink BWP of a primary or secondary cell configured for the SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the primary or secondary cell. The one or more processors can be configured to: receive a control message associated with activating the SCG for the UE, the control message indicating a BWP switching for the UE; and in conjunction with receiving the control message, switch from one of the dormant downlink BWP or the enhanced dormant downlink BWP to an activated downlink BWP, in which the UE operates in an SCG activated state.

[0010] In some aspects, a network node for wireless communication may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to, in conjunction with MR-DC, determine to direct a UE to enter one of an SCG sleep state, an SCG enhanced sleep state, or an SCG activation state. The one or more processors may be configured to send a control message to the UE, the control message instructing the UE to switch to one of the following: a sleep downlink BWP configured for a primary or secondary cell of the SCG to operate in the SCG sleep state; an enhanced sleep downlink BWP configured for the primary or secondary cell to operate in the SCG enhanced sleep state; or an activated downlink BWP configured for the primary or secondary cell to operate in the SCG activation state.

[0011] In some aspects, a non-transitory computer-readable medium storing an instruction set for wireless communication may include one or more instructions that, when executed by one or more processors of a UE, may cause the UE to: operate in one of an SCG dormant state in a dormant downlink BWP of a primary or secondary cell configured for an MR-DC or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the primary or secondary cell, in conjunction with an SCG for MR-DC. The one or more instructions may cause the UE to: receive a control message associated with activating the SCG for the UE, the control message indicating a BWP switching for the UE; and, in conjunction with receiving the control message, switch from one of the dormant downlink BWP or the enhanced dormant downlink BWP to an activated downlink BWP, in which the UE operates in an SCG activated state.

[0012] In some aspects, a non-transitory computer-readable medium storing an instruction set for wireless communication may include one or more instructions, which, when executed by one or more processors of a network node, may cause the network node to perform the following operations: in conjunction with MR-DC, determine to direct the UE to enter one of the SCG sleep state, the SCG enhanced sleep state, or the SCG activation state; and send a control message to the UE, the control message instructing the UE to switch to one of the following: a sleep downlink BWP configured for the primary and secondary cells of the SCG to operate in the SCG sleep state; an enhanced sleep downlink BWP configured for the primary and secondary cells to operate in the SCG enhanced sleep state; or an activated downlink BWP configured for the primary and secondary cells to operate in the SCG activation state.

[0013] In some aspects, an apparatus for wireless communication may include: a unit for operating, in conjunction with an SCG for MR-DC, in one of an SCG dormant state in a dormant downlink BWP of a primary or secondary cell configured for the SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the primary or secondary cell; a unit for receiving a control message associated with activating the SCG for the apparatus, the control message indicating a BWP switching for the apparatus; and a unit for switching from one of the dormant downlink BWP or the enhanced dormant downlink BWP to an activated downlink BWP, in conjunction with receiving the control message, wherein the apparatus operates in an SCG activated state.

[0014] In some aspects, an apparatus for wireless communication may include: a unit for determining, in combination with MR-DC, to guide a UE to enter one of an SCG sleep state, an SCG enhanced sleep state, or an SCG activation state; and a unit for sending a control message to the UE, the control message instructing the UE to switch to one of the following: a sleep downlink BWP configured for the primary and secondary cells of the SCG to operate in the SCG sleep state; an enhanced sleep downlink BWP configured for the primary and secondary cells to operate in the SCG enhanced sleep state; or an activated downlink BWP configured for the primary and secondary cells to operate in the SCG activation state.

[0015] In summary, aspects include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices, and / or processing systems as fully described herein with reference to and as illustrated by the accompanying figures and description.

[0016] The foregoing has outlined quite broadly the features and technical advantages of the examples according to the present disclosure so that the detailed description below may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be readily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood from the description below when considered in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By referring to some of the various aspects shown in the accompanying drawings, a more detailed description of the invention briefly summarized above can be provided so that the above-mentioned features of the present disclosure can be fully understood. However, it should be noted that the drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope of the present disclosure, as the description may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0018] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0019] Figure 2 is a diagram illustrating an example of communication between a base station and a user equipment (UE) in a wireless network according to the present disclosure.

[0020] Figure 3is a diagram illustrating an example associated with a secondary cell group (SCG) state of a UE according to the present disclosure.

[0021] Figure 4 is a diagram illustrating an example associated with SCG activation through a bandwidth part (BWP) for dual connectivity with multiple radio access technologies (MR-DC) according to the present disclosure.

[0022] Figure 5 is a diagram illustrating an example associated with SCG activation through BWP for MR-DC according to the present disclosure.

[0023] Figure 6 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0024] Figure 7 is a diagram illustrating an example process, eg, performed by a network node, according to the present disclosure. DETAILED DESCRIPTION

[0025] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. More precisely, these aspects are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, it should be appreciated by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether that aspect is implemented independently of any other aspect of the present disclosure or is implemented in combination with any other aspect. For example, a device can be implemented or a method can be practiced using any number of aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such devices or methods that are practiced using other structures, functions, or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.

[0026] Several aspects of telecommunications systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements") and illustrated in the accompanying drawings. These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0027] It should be noted that although various aspects may be described using terminology typically associated with 5G or NR radio access technologies (RATs), various aspects of the present disclosure may be applicable to other RATs, such as 3G RATs, 4G RATs, and / or RATs beyond 5G (e.g., 6G).

[0028] Figure 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be or may include elements of a 5G (NR) network and / or an LTE network, among others. The wireless network 100 may include a plurality of base stations 110 (illustrated as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, Node B, gNB, 5G Node B (NB), access point, or transmit receive point (TRP). Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving that coverage area, depending on the context in which the term is used.

[0029] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in FIG, BS 110a may be a macro BS for macrocell 102a, BS 110b may be a pico BS for picocell 102b, and BS 110c may be a femto BS for femtocell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB," "base station," "NR BS," "gNB," "TRP," "AP," "Node B," "5G NB," and "cell" may be used interchangeably herein.

[0030] In some aspects, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces (such as direct physical connections or virtual networks) using any suitable transport network.

[0031] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in , relay BS 110d may communicate with macro BS 110a and UE 120d to facilitate communication between BS 110a and UE 120d. A relay BS may also be referred to as a relay station, relay base station, or relay.

[0032] The wireless network 100 may be a heterogeneous network including different types of BSs, such as macro BSs, pico BSs, femto BSs, and / or relay BSs. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), and a pico BS, femto BS, and relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0033] The network controller 130 may be coupled to a group of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate directly or indirectly with each other via a wireless or wired backhaul.

[0034] UEs 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. A UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. A UE may be a cellular phone (e.g., a smartphone), 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, an ultrabook, a medical device or apparatus, a biometric sensor / device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet, etc.)), an entertainment device (e.g., a music or video device, or a satellite radio unit, etc.), a 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 or wired medium.

[0035] Some UEs may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide a connection to or to a network (e.g., a wide area network such as the Internet or a cellular network) via, for example, a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs may be considered customer premises equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120 (such as a processor component and / or a memory component). In some aspects, the processor component and the memory component may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0036] In general, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as a radio technology and / or air interface. Frequency can also be referred to as a carrier and / or frequency channel. Each frequency can 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 can be deployed.

[0037] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary to communicate with each other). For example, the UEs 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols), and / or mesh networks. In this case, the UEs 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the base station 110.

[0038] Devices in wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc. based on frequency or wavelength. For example, devices in wireless network 100 can communicate using an operating band having a first frequency range (FR1) (which can span from 410 MHz to 7.125 GHz) and / or using an operating band having a second frequency range (FR2) (which can span from 24.25 GHz to 52.6 GHz). Frequencies between FR1 and FR2 are sometimes referred to as intermediate frequencies. Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to as the "sub-6 GHz" band. Similarly, FR2 is often referred to as the "millimeter wave" band, although it is distinct from the extremely high frequency (EHF) band (30 GHz–300 GHz), which is designated as a "millimeter wave" band by the International Telecommunication Union (ITU). Therefore, unless explicitly stated otherwise, it should be understood that the term "sub-6 GHz," etc., if used herein, can broadly refer to frequencies less than 6 GHz, frequencies within FR1, and / or intermediate frequencies (e.g., greater than 7.125 GHz). Similarly, unless otherwise expressly stated, it should be understood that the term "millimeter wave" or the like (if used herein) can broadly refer to frequencies within the EHF band, frequencies within FR2, and / or intermediate frequencies (e.g., less than 24.25 GHz). It is contemplated that the frequencies included in FR1 and FR2 may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0039] As pointed out above, Figure 1 is provided as an example. Other examples may differ from those described in relation to Figure 1 Examples described.

[0040] Figure 2is a diagram illustrating an example of base station 110 communicating with UE 120 in wireless network 100 according to the present disclosure. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general, T≥1 and R≥1.

[0041] At the base station 110, a transmit processor 220 may receive data for one or more UEs from a data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, upper layer signaling), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS), 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 ​​data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and frequency upconvert) the output sample stream to obtain a downlink signal. T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.

[0042] At UE 120, antennas 252a through 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), and / or CQI, etc. In some aspects, one or more components of the UE 120 may be included in the housing 284 .

[0043] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via the communication unit 294.

[0044] The antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or may be included within one or more antenna panels, antenna groups, antenna element sets, and / or antenna arrays, etc. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include one or more antenna elements. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include coplanar antenna element sets and / or non-coplanar antenna element sets. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements within a single housing and / or antenna elements within multiple housings. The antenna panels, antenna groups, antenna element sets, and / or antenna arrays may include antenna elements coupled to one or more transmitting and / or receiving components (such as Figure 2 One or more antenna elements of one or more components).

[0045] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from the controller / processor 280. The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM), and transmitted to the base station 110. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 254) of the UE 120 may be included in a modem of the UE 120. In some aspects, the UE 120 comprises a transceiver. The transceiver may include any combination of antennas 252, modulators and / or demodulators 254, MIMO detectors 256, receive processors 258, transmit processors 264, and / or TX MIMO processors 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any method described herein (e.g., as described with reference to FIG. Figure 3-7 description).

[0046] At base station 110, uplink signals from UE 120 and other UEs may be received by antenna 234, processed by demodulator 232, 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. Receive processor 238 may provide decoded data to data sink 239 and decoded control information to controller / processor 240. Base station 110 may include and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communications. In some aspects, the modulator and demodulator (e.g., MOD / DEMOD 232) of base station 110 may be included in a modem of base station 110. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antennas 234, modulators and / or demodulators 232, MIMO detectors 236, receive processors 238, transmit processors 220, and / or TX MIMO processors 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any method described herein (e.g., as described with reference to FIG. Figure 3-7 In some aspects, the base station 110 may operate as a master node (MN) of a master cell group (MCG) or a secondary node (SN) of a secondary cell group (SCG).

[0047] The controller / processor 240 of a network node (e.g., base station 110), the controller / processor 280 of UE 120, and / or Figure 2 Any other component in the base station 110 may perform one or more techniques associated with SCG activation via a bandwidth part (BWP) for dual connectivity with multiple radio access technologies (MR-DC), as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component in may perform or direct e.g. Figure 6 The process of 600 Figure 7 700 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, 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 communications. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of base station 110 and / or UE 120, may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example, Figure 6 The process of 600 Figure 7 The operations of process 700 and / or other processes as described herein. In some aspects, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0048] In some aspects, the UE 120 may include: a unit for operating in one of an SCG dormant state in a dormant downlink BWP of a primary secondary cell (PSCell) configured for the SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the PSCell in conjunction with an SCG for MR-DC; a unit for receiving a control message associated with activating the SCG for the UE, the control message indicating a BWP switching for the UE; a unit for switching from one of the dormant downlink BWP or the enhanced dormant downlink BWP to an activated downlink BWP in conjunction with receiving a control message, wherein the UE operates in the SCG activated state in the activated downlink BWP; and the like. In some aspects, such a unit may include a unit for operating in conjunction with an SCG for MR-DC; Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and the like.

[0049] In some aspects, a network node (e.g., base station 110, MN, SN, etc.) may include: a unit for determining, in conjunction with MR-DC, to direct a UE to enter one of an SCG dormant state, an SCG enhanced dormant state, or an SCG activated state; a unit for sending a control message to the UE, the control message instructing the UE to switch to one of the following: a dormant downlink BWP of a PSCell configured for the SCG to operate in the SCG dormant state; an enhanced dormant downlink BWP configured for the PSCell to operate in the SCG enhanced dormant state; or an activated downlink BWP configured for the PSCell to operate in the SCG activated state; etc. In some aspects, such a unit may include a unit for determining, in conjunction with MR-DC, to direct a UE to enter one of an SCG dormant state, an SCG enhanced dormant downlink BWP; or an activated downlink BWP configured for the PSCell to operate in the SCG activated state; etc. Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0050] Although Figure 2 The blocks in FIG. 2 are shown as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0051] As pointed out above, Figure 2 is provided as an example. Other examples may differ from those described in relation to Figure 2 Examples described.

[0052] Figure 3 is a diagram illustrating an example 300 associated with an SCG state of a UE according to the present disclosure. Figure 3 A table showing SCG states includes an SCG deactivated state, an SCG dormant state, an SCG enhanced dormant state, and an SCG activated state.

[0053] When the UE is operating in the SCG deactivated state, the UE may avoid monitoring the Physical Downlink Control Channel (PDCCH) on the PSCell, avoid sending uplink communications on the PSCell, avoid performing channel state information (CSI) measurements on the PSCell, and avoid maintaining uplink timing alignment with the SN in the PSCell. The UE may also perform radio resource management (RRM) measurements on the PSCell (and send reports on the MCG), and avoid performing radio link monitoring (RLM) measurements.

[0054] In some aspects, the UE may be in an SCG sleep state or an SCG enhanced sleep state so that the UE may consume less power and / or minimize the transition delay to the SCG active state. When the UE is operating in the SCG sleep state, the UE may avoid monitoring the PDCCH on the PSCell, avoid sending uplink communications on the PSCell, and perform CSI measurements in the dormant downlink BWP on the PSCell, but avoid sending CSI reports for the PSCell. The UE may avoid maintaining uplink timing alignment with the SN in the PSCell, perform RRM measurements on the PSCell (and send reports on the MCG), and avoid performing RLM measurements.

[0055] When the UE is operating in SCG enhanced dormant state, the UE can avoid monitoring PDCCH on PSCell, perform CSI measurements in enhanced dormant downlink BWP on PSCell, send CSI reports in the physical uplink control channel (PUCCH) for PSCell, maintain uplink timing alignment with SN in primary and secondary cells, perform RRM measurements on primary and secondary cells (and send reports on MCG), and avoid performing RLM measurements.

[0056] When a UE is operating in an SCG activated state, it can receive messages on the PDCCH on the PSCell and transmit uplink and / or downlink data on the PSCell. The UE can perform CSI measurements, send CSI reports, and maintain uplink timing alignment with the SN in the PSCell. The UE can also perform and report RRM measurements and / or RLM measurements. In other words, when operating in an SCG activated state, the UE can perform communications using the SCG and perform other intended operations using the active SCG.

[0057] In some aspects, the SCG state of a UE for a secondary cell (SCell) may be a SCell deactivated state or a SCell dormant state.

[0058] As pointed out above, Figure 3is provided as an example. Other examples may differ from those described in relation to Figure 3 Examples described.

[0059] The UE can transition from the SCG deactivated state to the SCG activated state by receiving a medium access control element (MAC-CE). Transitioning from the SCG deactivated state to the SCG activated state may take some time because CSI measurements have not yet been performed, the uplink timing has not yet been aligned with the SN, and a random access channel (RACH) procedure may need to be performed. On the other hand, if the UE remains in the SCG activated state, a lot of power is consumed. The UE can operate in the SCG sleep state or the SCG enhanced sleep state, which involves fewer actions than the SCG activated state, but these SCG sleep states may still consume power. In addition, MAC-CE may not be the fastest way to signal SCG activation because MAC-CE involves sending an acknowledgment. In other words, SCG activation for the UE may consume more power, time and / or signaling resources than required.

[0060] According to various aspects described herein, a UE can operate in a BWP configured for a PSCell, where the BWP is dedicated to the SCG state. For example, the UE can operate in the SCG sleep state in a dormant downlink BWP configured for a PSCell, or the UE can operate in the SCG enhanced sleep state in an enhanced dormant downlink BWP configured for a PSCell. In some aspects, the UE can quickly activate the SCG by receiving a control message instructing the UE to switch BWPs. For example, the control message can be downlink control information (DCI) instructing the SCG to activate the downlink BWP. By switching from a dormant downlink BWP or an enhanced dormant downlink BWP to an activated downlink BWP, the UE can quickly transition from the SCG sleep state or the SCG enhanced sleep state to the SCG activated state. DCI signaling is also faster than MAC-CE signaling, and therefore, the UE uses DCI signaling to save time transitioning to the SCG activated state. In addition, the UE saves power by performing CSI measurements only in the dormant downlink BWP or the enhanced dormant downlink BWP rather than in the entire available bandwidth.

[0061] Figure 4 FIG is a diagram illustrating an example 400 associated with SCG activation via BWP for MR-DC according to the present disclosure. Figure 4 As shown, the MN 410 (eg, base station 110) of the MCG may communicate with the SN (eg, base station 110) and the UE 420 (eg, UE 120) of the SCG.

[0062] UE 420 may receive a trigger for activating the SCG. For example, as shown at 430, data may arrive at SN 415. SN 415 may provide an SN activation request to MN 410, as shown at 435. MN 410 may send a control message to UE 420. The control message may be an SCG activation message sent via DCI, as shown at 440. The DCI may indicate the BWP to which UE 420 is to switch, or the DCI may provide some other BWP switching indication. In some aspects, the trigger for SCG activation may be MN 410 receiving data on an MN-terminated bearer that requires SCG resources.

[0063] UE 420 may switch BWP based at least in part on the control message. For example, as shown at 445, UE 420 may switch to an activated downlink BWP, wherein UE 420 operates in an SCG activated state. UE 420 may send an SCG activation confirmation to MN 410, as shown at 450.

[0064] Depending on whether UE 420 is in the SCG sleep state or the SCG enhanced sleep state, UE 420 may perform a RACH procedure, as indicated by reference numeral 455. For example, if UE 420 is in the SCG sleep state, UE 420 may perform a RACH procedure after receiving a control message. UE 420 that has already performed CSI measurements on a PSCell in the SCG sleep state may continue to perform CSI measurements. After UE 420 completes the RACH procedure, UE 420 may send a CSI report, as indicated by reference numeral 460. However, if UE 420 is in the SCG enhanced sleep state, UE 420 does not perform a RACH procedure, but instead continues to receive scheduling information after receiving the control message. UE 420 has already sent CSI reports in the SCG enhanced sleep state, and network nodes (e.g., MN, SN) may use these CSI reports to schedule communications instead of waiting to receive new CSI reports. UE 420 may start data transmission, as indicated by reference numeral 465. Compared to the SCG dormant state, the UE 420 can start data transmission faster from the SCG enhanced dormant state. If the UE 420 is in the SCG deactivated state, the UE 420 will have to restart CSI reporting after initiating the RACH procedure.

[0065] As pointed out above, Figure 4 is provided as an example. Other examples may differ from those described in relation to Figure 4 Examples described.

[0066] Figure 55 is a diagram illustrating examples 500, 502 associated with SCG activation via BWP for MR-DC according to the present disclosure. Figure 5 As shown in example 500 in FIG, an MCG for a MN may be associated with an SCG for a SN. An MCG may include a primary cell (PCell) and a secondary cell (SCell). An SCG may include a primary secondary cell (PSCell). In some aspects, an SCG may include other secondary cells.

[0067] like Figure 5 As shown, a PSCell may include, for example, a dormant downlink BWP, where the UE operates in the SCG dormant state. If bandwidth adaptation is configured for the PSCell, the PSCell may include other BWPs, such as for the SCG enhanced dormant state. In some aspects, the dormant downlink BWP may be the same as the enhanced dormant downlink BWP.

[0068] The PCell of the MCG may receive a DCI indicating that the UE is to transition to an SCG activated state. Thus, the UE may switch from a dormant downlink BWP to an activated downlink BWP. As part of the BWP framework for PSCell dormancy, this BWP switching via DCI may provide faster activation of the PSCell. The BWP framework may involve enhancements to DCI signaling for NR and LTE (in Evolved Universal Terrestrial Radio Access with Dual Connectivity or EN-DC). In some aspects, MAC-CE signaling may be used for BWP switching where DCI signaling is not available or feasible. In some aspects, a PSCell may be activated together with one or more SCG SCells.

[0069] In some aspects, another control message (e.g., a deactivation control message via DCI) may be used to transition the UE from the SCG active state to the SCG dormant state or the SCG enhanced dormant state. Figure 5 As shown in Example 502 in FIG, a UE may receive DCI on a PSCell instructing the UE to transition to an SCG dormant state. For example, the DCI may indicate a dormant downlink BWP. The UE may switch from an activated downlink BWP to a dormant downlink BWP. Thus, the UE may transition from an SCG activated state to an SCG dormant state. Note that transitions to and from the SCG deactivated state may be performed using a MAC-CE.

[0070] As pointed out above, Figure 5 is provided as an example. Other examples may differ from those described in relation to Figure 5 Examples described.

[0071] Figure 66 is a diagram illustrating an example process 600 performed, for example, by a UE, according to the present disclosure. The example process 600 is a diagram in which a UE (e.g., Figure 1 and 2 UE 120 depicted in Figure 4 An example of a UE 420 depicted in FIG. 4 performing operations associated with SCG activation via a BWP for MR-DC.

[0072] like Figure 6 As shown, in some aspects, process 600 may include operating in one of an SCG dormant state in a dormant downlink BWP of a PSCell configured for SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the PSCell, in conjunction with an SCG for MR-DC (block 610). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) may operate in one of an SCG dormant state in a dormant downlink BWP of a PSCell configured for SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the PSCell, in conjunction with an SCG for MR-DC, as described above.

[0073] like Figure 6 As further shown in FIG6 , in some aspects, process 600 may include receiving a control message associated with activating an SCG for the UE (block 620). For example, the UE (e.g., using receive processor 258, transmit processor 264, controller / processor 280, memory 282) may receive a control message associated with activating an SCG for the UE. In some aspects, the control message may indicate a BWP switch for the UE.

[0074] like Figure 6 As further shown in FIG6 , in some aspects, process 600 may include, in conjunction with receiving a control message, switching from one of a dormant downlink BWP or an enhanced dormant downlink BWP to an activated downlink BWP, wherein the UE operates in an SCG activated state (block 630). For example, the UE (e.g., using the receive processor 258, the transmit processor 264, the controller / processor 280, the memory 282) may, in conjunction with receiving a control message, switch from one of a dormant downlink BWP or an enhanced dormant downlink BWP to an activated downlink BWP, wherein the UE operates in an SCG activated state, as described above.

[0075] Process 600 may include additional aspects, such as any single aspect or any combination of the aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0076] In a first aspect, the control message comprises DCI received on a primary cell of an MCG associated with an SCG.

[0077] In a second aspect, alone or in combination with the first aspect, the control message comprises a MAC-CE received on a primary cell or an activated secondary cell of an MCG associated with an SCG.

[0078] In the third aspect, alone or in combination with one or more of the first and second aspects, a UE operating in an SCG dormant state shall avoid monitoring PDCCH on the PSCell, avoid sending uplink communications in the PSCell, perform CSI measurements in a dormant downlink BWP on the PSCell, avoid sending CSI reports for the PSCell, avoid maintaining uplink timing alignment with the SN in the PSCell, perform RRM measurements on the PSCell, and avoid performing RLM measurements.

[0079] In the fourth aspect, alone or in combination with one or more aspects of the first to third aspects, a UE operating in the SCG enhanced sleep state will avoid monitoring PDCCH on the PSCell, performing CSI measurements in the enhanced sleep downlink BWP on the PSCell, sending CSI reports for the PSCell, maintaining uplink timing alignment with the SN in the PSCell, performing RRM measurements on the PSCell, and avoiding performing RLM measurements.

[0080] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the process 600 includes: after entering the SCG active state from the SCG dormant state, performing a RACH process.

[0081] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, process 600 includes sending uplink communications without performing a RACH procedure after entering an SCG activated state from an SCG enhanced dormant state.

[0082] In the seventh aspect, alone or in combination with one or more of aspects 1 to 6, process 600 includes: receiving another control message associated with a transition to an SCG sleep state or an SCG enhanced sleep state, the other control message indicating another BWP switch; and in combination with receiving the other control message, switching to one of the following: a sleep downlink BWP to operate in the SCG sleep state; or an enhanced sleep downlink BWP to operate in the SCG enhanced sleep state.

[0083] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 600 includes: receiving a MAC-CE on a PSCell; and transitioning to an SCG deactivated state based at least in part on receiving the MAC-CE.

[0084] In the ninth aspect, alone or in combination with one or more aspects from the first to the eighth aspects, a UE operating in the SCG deactivated state will avoid monitoring PDCCH on the PSCell, avoid sending uplink communications on the PSCell, avoid performing CSI measurements on the PSCell, avoid maintaining uplink timing alignment with the SN in the PSCell, perform RRM measurements on the PSCell, and avoid performing RLM measurements.

[0085] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the control message is associated with activating a PSCell and one or more other secondary cells of an SCG.

[0086] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 600 includes: receiving configurations for one or more of the SCG sleep state or the SCG enhanced sleep state in a radio resource control (RRC) configuration message.

[0087] Although Figure 6 Example blocks of process 600 are shown, but in some aspects process 600 may include Figure 6 The blocks may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in process 600. Additionally or alternatively, two or more blocks of the blocks in process 600 may be executed in parallel.

[0088] Figure 7 is a diagram illustrating an example process 700, for example, performed by a network node, according to the present disclosure. The example process 700 is a diagram in which a network node (e.g., Figure 1 and 2 The base station 110 depicted in Figure 4 MN 410, depicted in Figure 4An example of SN415) depicted in FIG. 4 performing operations associated with SCG activation via a BWP for MR-DC.

[0089] like Figure 7 As shown, in some aspects, process 700 may include, in conjunction with MR-DC, determining to direct the UE to enter one of an SCG dormant state, an SCG enhanced dormant state, or an SCG activated state (block 710). For example, the network node (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242) may determine to direct the UE to enter one of an SCG dormant state, an SCG enhanced dormant state, or an SCG activated state in conjunction with MR-DC, as described above.

[0090] like Figure 7 As further shown, in some aspects, process 700 may include sending a control message to the UE, the control message instructing the UE to switch to one of: a dormant downlink BWP configured for a PSCell of an SCG to operate in the SCG dormant state; an enhanced dormant downlink BWP configured for the PSCell to operate in the SCG enhanced dormant state; or an activated downlink BWP configured for the PSCell to operate in the SCG activated state (block 720). For example, the network node (e.g., using transmit processor 220, receive processor 238, controller / processor 240, memory 242) may send a control message to the UE, the control message instructing the UE to switch to one of: a dormant downlink BWP configured for a PSCell of an SCG to operate in the SCG dormant state; an enhanced dormant downlink BWP configured for the PSCell to operate in the SCG enhanced dormant state; or an activated downlink BWP configured for the PSCell to operate in the SCG activated state, as described above.

[0091] Process 700 may include additional aspects, such as any single aspect or any combination of the aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0092] In the first aspect, sending the control message includes sending the control message via DCI on a primary cell of an MCG associated with the SCG.

[0093] In a second aspect, alone or in combination with the first aspect, the control message includes a MAC-CE on a primary cell or an activated secondary cell of an MCG associated with an SCG.

[0094] In the third aspect, alone or in combination with one or more of the first and second aspects, the control message will cause the UE to operate in the SCG sleep state, in which the UE is configured to: avoid monitoring PDCCH on the PSCell, avoid sending uplink communications in the PSCell, perform CSI measurements in the dormant downlink BWP on the PSCell, avoid sending CSI reports for the PSCell, avoid maintaining uplink timing alignment with the SN in the PSCell, perform RRM measurements on the PSCell, and avoid performing RLM measurements.

[0095] In the fourth aspect, alone or in combination with one or more aspects of the first to third aspects, the control message will cause the UE to operate in the SCG enhanced sleep state, in which the UE is configured to: avoid monitoring PDCCH on the PSCell, perform CSI measurements in the enhanced sleep downlink BWP on the PSCell, send CSI reports for the PSCell, maintain uplink timing alignment with the SN in the PSCell, perform RRM measurements on the PSCell, and avoid performing RLM measurements.

[0096] In the fifth aspect, alone or in combination with one or more aspects of the first to fourth aspects, process 700 includes: determining to direct the UE to enter the SCG deactivation state; and sending a MAC-CE on the PSCell, the MAC-CE instructing the UE to transition to the SCG deactivation state.

[0097] In the sixth aspect, alone or in combination with one or more aspects from the first to the fifth aspects, the MAC-CE will cause the UE to operate in the SCG deactivated state, in which the UE is configured to: avoid monitoring PDCCH on the PSCell of the SCG, avoid sending uplink communications on the PSCell, avoid performing CSI measurements on the PSCell, avoid maintaining uplink timing alignment with the SN in the PSCell, perform RRM measurements on the PSCell, and avoid performing RLM measurements.

[0098] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the control message is associated with activating the PSCell and one or more other secondary cells of the SCG.

[0099] In the eighth aspect, alone or in combination with one or more aspects from the first to seventh aspects, process 700 includes: sending an RRC configuration message to the UE, the RRC configuration message including configurations for one or more of the SCG sleep state or the SCG enhanced sleep state.

[0100] Although Figure 7 Example blocks of process 700 are shown, but in some aspects, process 700 may include Figure 7 The blocks may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in process 700. Additionally or alternatively, two or more blocks of the blocks in process 700 may be executed in parallel.

[0101] The following provides a summary of some aspects of the disclosure:

[0102] Aspect 1: A method of wireless communication performed by a user equipment (UE), comprising: operating in one of the SCG dormant states in a dormant downlink bandwidth part (BWP) of a primary and secondary cell configured for the SCG or an SCG enhanced dormant state in an enhanced dormant downlink BWP configured for the primary and secondary cell in combination with a secondary cell group (SCG) for multi-radio access technology dual connectivity (MR-DC); receiving a control message associated with activating the SCG for the UE, the control message indicating BWP switching for the UE; and switching from one of the dormant downlink BWP or the enhanced dormant downlink BWP to an activated downlink BWP in combination with receiving the control message, wherein the UE operates in the SCG activated state.

[0103] Aspect 2: The method according to aspect 1, wherein the control message includes downlink control information received on a primary cell of a primary cell group associated with the SCG.

[0104] Aspect 3: The method according to aspect 1, wherein the control message includes a medium access control element (MAC-CE) received on a primary cell or an activated secondary cell of a primary cell group associated with the SCG.

[0105] Aspect 4: A method according to any one of Aspects 1-3, wherein the UE operating in the SCG dormant state will avoid monitoring the physical downlink control channel on the primary and secondary cells, avoid sending uplink communications on the primary and secondary cells, perform channel state information (CSI) measurements in the dormant downlink BWP on the primary and secondary cells, avoid sending CSI reports for the primary and secondary cells, avoid maintaining uplink timing alignment with the secondary node in the primary and secondary cells, perform wireless resource management measurements on the primary and secondary cells, and avoid performing wireless link monitoring measurements.

[0106] Aspect 5: A method according to any one of Aspects 1-3, wherein the UE operating in the SCG enhanced dormant state will avoid monitoring the physical downlink control channel on the primary and secondary cells, perform channel state information (CSI) measurements in the enhanced dormant downlink BWP on the primary and secondary cells, send CSI reports for the primary and secondary cells, maintain uplink timing alignment with the secondary node in the primary and secondary cells, perform wireless resource management measurements on the primary and secondary cells, and avoid performing wireless link monitoring measurements.

[0107] Aspect 6: The method according to any one of aspects 1 to 5 further includes: performing a random access channel procedure after entering the SCG active state from the SCG dormant state.

[0108] Aspect 7: The method according to any one of aspects 1-5 further includes: after entering the SCG activated state from the SCG enhanced dormant state, sending uplink communication without performing a random access channel procedure.

[0109] Aspect 8: The method according to any one of Aspects 1-7 further includes: receiving another control message associated with transitioning to the SCG sleep state or the SCG enhanced sleep state, the other control message indicating another BWP switching; and in combination with receiving the other control message, switching to one of the following: the sleep downlink BWP to operate in the SCG sleep state; or the enhanced sleep downlink BWP to operate in the SCG enhanced sleep state.

[0110] Aspect 9: The method according to any one of aspects 1-7 further includes: receiving a medium access control element (MAC-CE) on the primary and secondary cells; and transitioning to an SCG deactivated state based at least in part on receiving the MAC-CE.

[0111] Aspect 10: A method according to Aspect 9, wherein the UE operating in the SCG deactivated state will avoid monitoring the physical downlink control channel on the primary and secondary cells, avoid sending uplink communications on the primary and secondary cells, avoid performing channel state information (CSI) measurements on the primary and secondary cells, avoid maintaining uplink timing alignment with the secondary node in the primary and secondary cells, perform wireless resource management measurements on the primary and secondary cells, and avoid performing wireless link monitoring measurements.

[0112] Aspect 11: The method according to any one of aspects 1-10, wherein the control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG.

[0113] Aspect 12: The method according to any one of aspects 1-11 further includes: receiving configuration for one or more of the SCG dormant state or the SCG enhanced dormant state in a radio resource control configuration message.

[0114] Aspect 13: A method of wireless communication performed by a network node, comprising: combining dual connectivity of multiple radio access technologies, determining to guide a user equipment (UE) to enter one of a secondary cell group (SCG) sleep state, an SCG enhanced sleep state, or an SCG activation state; and sending a control message to the UE, the control message instructing the UE to switch to one of the following: a sleep downlink bandwidth part (BWP) of a primary and secondary cell configured for the SCG, to operate in the SCG sleep state; an enhanced sleep downlink BWP configured for the primary and secondary cell, to operate in the SCG enhanced sleep state; or an activated downlink BWP configured for the primary and secondary cell, to operate in the SCG activation state.

[0115] Aspect 14: The method according to aspect 13, wherein sending the control message includes: sending the control message via downlink control information on a primary cell of a primary cell group associated with the SCG.

[0116] Aspect 15: The method according to aspect 13, wherein the control message includes a medium access control element (MAC-CE) on a primary cell or an activated secondary cell of a primary cell group associated with the SCG.

[0117] Aspect 16: A method according to any one of Aspects 13-15, wherein the control message causes the UE to operate in the SCG dormant state, and in the SCG dormant state, the UE is configured to: avoid monitoring the physical downlink control channel on the primary and secondary cells, avoid sending uplink communications on the primary and secondary cells, perform channel state information (CSI) measurements in the dormant downlink BWP on the primary and secondary cells, avoid sending CSI reports for the primary and secondary cells, avoid maintaining uplink timing alignment with the secondary node in the primary and secondary cells, perform wireless resource management measurements on the primary and secondary cells, and avoid performing wireless link monitoring measurements.

[0118] Aspect 17: A method according to any one of Aspects 13-16, wherein the control message causes the UE to operate in the SCG enhanced sleep state, and in the SCG enhanced sleep state, the UE is configured to: avoid monitoring the physical downlink control channel on the primary and secondary cells, perform channel state information (CSI) measurements in the enhanced sleep downlink BWP on the primary and secondary cells, send CSI reports for the primary and secondary cells, maintain uplink timing alignment with the secondary node in the primary and secondary cells, perform wireless resource management measurements on the primary and secondary cells, and avoid performing wireless link monitoring measurements.

[0119] Aspect 18: The method according to any one of Aspects 13-16 further includes: determining to guide the UE to enter the SCG deactivation state; and sending a medium access control element (MAC-CE) on the primary and secondary cells, the MAC-CE instructing the UE to transition to the SCG deactivation state.

[0120] Aspect 19: A method according to Aspect 18, wherein the MAC-CE causes the UE to operate in the SCG deactivated state, and in the SCG deactivated state, the UE is configured to: avoid monitoring the physical downlink control channel on the primary and secondary cells of the SCG, avoid sending uplink communications on the primary and secondary cells, avoid performing channel state information (CSI) measurements on the primary and secondary cells, avoid maintaining uplink timing alignment with the secondary node in the primary and secondary cells, perform wireless resource management measurements on the primary and secondary cells, and avoid performing wireless link monitoring measurements.

[0121] Aspect 20: The method according to any one of aspects 13 to 19, wherein the control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG.

[0122] Aspect 21: The method according to any one of Aspects 13-20 further includes: sending a radio resource control configuration message to the UE, wherein the radio resource control configuration message includes configurations for one or more of the SCG sleep state or the SCG enhanced sleep state.

[0123] Aspect 22: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions, the instructions being stored in the memory and executable by the processor to cause the apparatus to perform a method according to one or more of Aspects 1-21.

[0124] Aspect 23: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1-21.

[0125] Aspect 24: An apparatus for wireless communication, comprising at least one means for performing the method according to one or more of aspects 1-21.

[0126] Aspect 25: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1-21.

[0127] Aspect 26: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of aspects 1-21.

[0128] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.

[0129] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, "software" should be broadly interpreted to mean instructions, instruction sets, code, code segments, program code, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, and / or functions, etc. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0130] It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or combinations of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not limiting in any way. Thus, the operation and behavior of the systems and / or methods are described herein without reference to specific software code, with the understanding that software and hardware can be designed to implement the systems and / or methods based, at least in part, on the description herein.

[0131] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.

[0132] Even if the specific combination of feature is recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many features in these features can be combined in a manner not specifically recorded in the claims and / or specifically disclosed in the specification. Although each dependent claim listed below can only be directly subordinate to a claim, the disclosure of various aspects includes the combination of each dependent claim and each other claim in the claim set. As used herein, the phrase of "at least one of" referring to a list of items refers to any combination of those items, including single members. For example, "at least one of a, b or c" is intended to cover a, b, c, ab, ac, bc and abc, and with any combination of the multiple of the same element (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc and ccc or any other sorting of a, b and c).

[0133] None of the elements, actions or instructions used herein should be interpreted as key or necessary, unless clearly described as such. In addition, as used herein, the articles "a" and "an" are intended to include one or more projects, and can be used interchangeably with "one or more". In addition, as used herein, the article "the" is intended to include one or more projects quoted in conjunction with the article "the", and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more projects (for example, related projects, unrelated projects, the combination of related projects and unrelated projects), and can be used interchangeably with "one or more". In the case of only expecting a project, phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms. In addition, unless otherwise clearly stated, phrase "based on" is intended to mean "at least partially based on". Furthermore, as used herein, the term "or" when used in a series is intended to be inclusive and can be used interchangeably with "and / or" unless expressly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A user equipment (UE) for wireless communication, comprising: one or more memories; as well as one or more processors coupled to the one or more memories, the one or more processors configured to: In conjunction with a secondary cell group (SCG) for multi-radio access technology dual connectivity, operating in an SCG enhanced dormant state in an enhanced dormant downlink bandwidth part (BWP) of a primary and secondary cell configured for the SCG, wherein the UE operating in the SCG enhanced dormant state will avoid monitoring a physical downlink control channel on the primary and secondary cell, perform channel state information (CSI) measurements in the enhanced dormant downlink BWP on the primary and secondary cell, send CSI reports for the primary and secondary cell, maintain uplink timing alignment with a secondary node in the primary and secondary cell, perform radio resource management measurements on the primary and secondary cell, and avoid performing radio link monitoring measurements; receiving a control message associated with activating the SCG for the UE, the control message indicating a BWP handover for the UE; and In conjunction with receiving the control message, switching from the enhanced dormant downlink BWP to an activated downlink BWP, and sending uplink communications without performing a random access channel procedure after entering an SCG activated state from the SCG enhanced dormant state.

2. The UE according to claim 1, wherein The control message also includes downlink control information received on a primary cell of a primary cell group associated with the SCG.

3. The UE according to claim 1, wherein: The control message includes a medium access control element (MAC-CE) received on a primary cell or an activated secondary cell of a primary cell group associated with the SCG.

4. The UE according to claim 1, wherein: The one or more processors are configured to: receiving another control message associated with transitioning to the SCG dormant state or the SCG enhanced dormant state, the another control message indicating another BWP switch; and In conjunction with receiving the other control message, switching to one of: the dormant downlink BWP to operate in the SCG dormant state; or the enhanced dormant downlink BWP to operate in the SCG enhanced dormant state. The UE according to claim 1 , wherein: The control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG. The UE according to claim 1 , wherein: The one or more processors are configured to receive a configuration for the SCG enhanced dormant state in a radio resource control configuration message.

7. A network node for wireless communication, comprising: one or more memories; as well as one or more processors coupled to the one or more memories, the one or more processors configured to: Combined with multi-radio access technology dual connectivity, determine and guide the user equipment (UE) to enter the secondary cell group (SCG) enhanced dormant state; as well as A control message is sent to the UE, wherein the control message instructs the UE to switch to the enhanced dormant downlink bandwidth part (BWP) configured for the primary and secondary cells of the SCG to operate in the SCG enhanced dormant state, wherein in the SCG enhanced dormant state, the UE is configured to: avoid monitoring the physical downlink control channel on the primary and secondary cells, perform channel state information (CSI) measurements in the enhanced dormant downlink BWP on the primary and secondary cells, send CSI reports for the primary and secondary cells, maintain uplink timing alignment with the secondary node in the primary and secondary cells, perform wireless resource management measurements on the primary and secondary cells, and avoid performing wireless link monitoring measurements. The network node according to claim 7 , wherein: To send the control message, the one or more processors are configured to send the control message via downlink control information on a primary cell of a primary cell group associated with the SCG.

9. The network node according to claim 7, wherein: The control message includes a medium access control element (MAC-CE) on a primary cell or an activated secondary cell of a primary cell group associated with the SCG.

10. The network node according to claim 7, wherein: The control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG. The network node according to claim 7 , wherein: The one or more processors are configured to send a radio resource control configuration message to the UE, the radio resource control configuration message including a configuration for the SCG enhanced dormant state.

12. A method of wireless communication performed by a user equipment (UE), comprising: In conjunction with a secondary cell group (SCG) for multi-radio access technology dual connectivity, operating in an SCG enhanced dormant state in an enhanced dormant downlink bandwidth part (BWP) of a primary and secondary cell configured for the SCG, wherein the UE operating in the SCG enhanced dormant state will avoid monitoring a physical downlink control channel on the primary and secondary cell, perform channel state information (CSI) measurements in the enhanced dormant downlink BWP on the primary and secondary cell, send CSI reports for the primary and secondary cell, maintain uplink timing alignment with a secondary node in the primary and secondary cell, perform radio resource management measurements on the primary and secondary cell, and avoid performing radio link monitoring measurements; receiving a control message associated with activating the SCG for the UE, the control message indicating a BWP handover for the UE; and In conjunction with receiving the control message, switching from the enhanced dormant downlink BWP to an activated downlink BWP, and sending uplink communications without performing a random access channel procedure after entering an SCG activated state from the SCG enhanced dormant state.

13. The method according to claim 12, further comprising: receiving another control message associated with transitioning to the SCG dormant state or the SCG enhanced dormant state, the another control message indicating another BWP switch; as well as In conjunction with receiving the other control message, switching to one of: the dormant downlink BWP to operate in the SCG dormant state; or the enhanced dormant downlink BWP to operate in the SCG enhanced dormant state.

14. The method according to claim 12, wherein: The control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG.

15. The method according to claim 12, wherein: The control message also includes downlink control information received on a primary cell of a primary cell group associated with the SCG.

16. The method according to claim 12, wherein: The control message includes a medium access control element (MAC-CE) received on a primary cell or an activated secondary cell of a primary cell group associated with the SCG.

17. The method according to claim 12, further comprising: A configuration for the SCG enhanced dormant state is received in a radio resource control configuration message.

18. A method of wireless communication performed by a network node, comprising: Combined with multi-radio access technology dual connectivity, determine and guide the user equipment (UE) to enter the secondary cell group (SCG) enhanced dormant state; as well as A control message is sent to the UE, wherein the control message instructs the UE to switch to the enhanced dormant downlink bandwidth part (BWP) configured for the primary and secondary cells of the SCG to operate in the SCG enhanced dormant state, wherein in the SCG enhanced dormant state, the UE is configured to: avoid monitoring the physical downlink control channel on the primary and secondary cells, perform channel state information (CSI) measurements in the enhanced dormant downlink BWP on the primary and secondary cells, send CSI reports for the primary and secondary cells, maintain uplink timing alignment with the secondary node in the primary and secondary cells, perform wireless resource management measurements on the primary and secondary cells, and avoid performing wireless link monitoring measurements.

19. The method according to claim 18, further comprising: The control message is sent via downlink control information on a primary cell of a primary cell group associated with the SCG.

20. The method according to claim 18, wherein The control message includes a medium access control element (MAC-CE) on a primary cell or an activated secondary cell of a primary cell group associated with the SCG.

21. The method according to claim 18, wherein The control message is associated with activating the primary secondary cell and one or more other secondary cells of the SCG.

22. The method of claim 18, further comprising: A radio resource control configuration message is sent to the UE, where the radio resource control configuration message includes a configuration for the SCG enhanced dormant state.

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