Method and apparatus for service cell change in a wireless communication system

Abstract

A method and apparatus for serving cell change in a wireless communication system are disclosed. A user equipment receives first signaling configuring one or more groups of cells including a first group of cells. The first group of cells includes a first special cell and one or more secondary cells. The user equipment receives second signaling indicating a serving cell change of the user equipment to the first group of cells. In response to the second signaling, the user equipment adds and / or activates the first special cell and the one or more secondary cells.

Description

Technical Field

[0001] This disclosure generally relates to wireless communication networks, and more particularly to methods and apparatus for serving cell changes in wireless communication systems. Background Technology

[0002] With the rapid growth in demand for transmitting large amounts of data to and from mobile communication devices, traditional mobile voice communication networks have evolved into networks that communicate with Internet Protocol (IP) packets. This type of IP packet communication can provide users of mobile communication devices with IP-bearing voice, multimedia, multicast, and video-on-demand communication services.

[0003] An exemplary network architecture is the Evolved Universal Terrestrial Radio Access Network (E-UTRAN). E-UTRAN systems can provide high data throughput to enable the aforementioned IP-based voice and multimedia services. Currently, the 3GPP standards organization is discussing next-generation (e.g., 5G) radio technologies. Therefore, changes to the current core of the 3GPP standards are currently being submitted and considered to facilitate their evolution and completion. Summary of the Invention

[0004] According to this disclosure, one or more apparatuses and / or methods are provided. In an example from the perspective of a user equipment (UE), the UE receives first signaling configuring one or more groups of cells of a first group of cells. The first group of cells includes a first special cell (SpCell) and one or more subcells (SCells). The UE receives second signaling instructing the UE to change its serving cell to the first group of cells. In response to the second signaling, the UE adds and / or activates the first SpCell and the one or more SCells. Attached Figure Description

[0005] Figure 1 A diagram of a wireless communication system according to an exemplary embodiment is shown;

[0006] Figure 2 This is a block diagram of a transmitter system (also referred to as an access network) and a receiver system (also referred to as an active user device or UE) according to an exemplary embodiment;

[0007] Figure 3 This is a functional block diagram of a communication system according to an exemplary embodiment;

[0008] Figure 4 This is based on an exemplary embodiment. Figure 3 Functional block diagram of the program code;

[0009] Figure 5This is a diagram illustrating an exemplary scenario associated with a UE, a first cell, and a second cell, according to an exemplary embodiment.

[0010] Figure 6 This is a diagram illustrating an exemplary scenario associated with a UE and a network, according to an exemplary embodiment;

[0011] Figure 7 This is a diagram illustrating an exemplary scenario associated with a UE and a network, according to an exemplary embodiment;

[0012] Figure 8 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0013] Figure 9 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0014] Figure 10 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0015] Figure 11 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0016] Figure 12 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0017] Figure 13 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0018] Figure 14 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0019] Figure 15 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0020] Figure 16 This is a diagram illustrating an exemplary scenario associated with a UE receiving first information and / or second information, according to an exemplary embodiment.

[0021] Figure 17 This is a flowchart according to an exemplary embodiment;

[0022] Figure 18 This is a flowchart according to an exemplary embodiment;

[0023] Figure 19 This is a flowchart according to an exemplary embodiment;

[0024] Figure 20 This is a flowchart according to an exemplary embodiment;

[0025] Figure 21 This is a flowchart according to an exemplary embodiment;

[0026] Figure 22 This is a flowchart according to an exemplary embodiment;

[0027] Figure 23 This is a flowchart based on an exemplary embodiment. Detailed Implementation

[0028] The exemplary wireless communication systems and apparatus described below employ wireless communication systems that support broadcast services. Wireless communication systems are widely deployed to provide various types of communication, such as voice, data, etc. These systems may be based on code division multiple access (CDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) radio access, 3GPP LTE-A or LTE Advanced (LTE Advanced), 3GPP2 Ultra Mobile Broadband (UMB), WiMax, 3GPP New Radio (NR) radio access for 5G, or some other modulation techniques.

[0029] Specifically, the exemplary wireless communication system apparatus described below can be designed to support one or more standards, such as those provided by the association known as the "3rd Generation Partnership Project" (referred to herein as 3GPP), including: RP-212710NR further mobility enhancements; 3GPP specification 38.331v16.6.0; and 3GPP specification 38.321v16.6.0. The standards and documents listed above are expressly incorporated herein by reference in their entirety.

[0030] Figure 1A multiple access wireless communication system according to one or more embodiments of the present disclosure is presented. Access network 100 (AN) includes multiple antenna groups, one antenna group including 104 and 106, another antenna group including 108 and 110, and yet another antenna group including 112 and 114. Figure 1 In this diagram, only two antennas are shown for each antenna group, but each antenna group may utilize more or fewer antennas. Access terminal 116 (AT) communicates with antennas 112 and 114, where antennas 112 and 114 transmit information to access terminal 116 via forward link 120 and receive information from access terminal 116 via reverse link 118. AT 122 communicates with antennas 106 and 108, where antennas 106 and 108 transmit information to AT 122 via forward link 126 and receive information from AT 122 via reverse link 124. In a frequency-division duplex (FDD) system, communication links 118, 120, 124, and 126 may use different frequencies for communication. For example, forward link 120 may use a different frequency than that used by reverse link 118.

[0031] Each antenna group and / or the area in which they are designed to communicate is often referred to as a sector of the access network. In an embodiment, each antenna group may be designed to communicate with an access terminal in a sector of the area covered by access network 100.

[0032] In communications via forward links 120 and 126, the transmit antennas of access network 100 can utilize beamforming to improve the signal-to-noise ratio of the forward links for different access terminals 116 and 122. Furthermore, compared to an access network that transmits to all its access terminals via a single antenna, an access network using beamforming to transmit to access terminals randomly distributed throughout its coverage area typically causes less interference to access terminals in neighboring cells.

[0033] An access network (AN) can be a fixed station or base station used for communication with terminals, and may also be referred to as an access point, Node B, base station, enhanced base station, eNodeB (eNB), next-generation NodeB (gNB), or some other term. An access terminal (AT) may also be referred to as user equipment (UE), wireless communication device, terminal, access terminal, or some other term.

[0034] Figure 2An embodiment of a multiple-input multiple-output (MIMO) system 200 is presented, comprising a transmitter system 210 (also referred to as an access network) and a receiver system 250 (also referred to as an access terminal (AT) or user equipment (UE)). At the transmitter system 210, service data for several data streams can be provided from a data source 212 to a transport (TX) data processor 214.

[0035] In one embodiment, each data stream is transmitted via a corresponding transmit antenna. The TX data processor 214 formats, decodes, and interleaves the service data of the data stream based on a specific decoding scheme selected for each data stream to provide decoded data.

[0036] Orthogonal Frequency Division Multiplexing (OFDM) technology can be used to multiplex the decoded data and pilot data of each data stream. The pilot data can typically be a known data pattern processed in a known manner and can be used at the receiver system to estimate the channel response. The multiplexed pilot and decoded data for the data stream can then be modulated (i.e., symbol mapped) based on a specific modulation scheme selected for each data stream (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-ary phase shift keying (M-PSK), or M-ary quadrature amplitude modulation (M-QAM)) to provide modulated symbols. The data rate, decoding, and / or modulation for each data stream can be determined by instructions executed by processor 230.

[0037] The modulation symbols of the data stream are then provided to a TX MIMO processor 220, which can further process the modulation symbols (e.g., for OFDM). The TX MIMO processor 220 then provides NT modulation symbol streams to NT transmitters (TMTRs) 222a to 222t. In some embodiments, the TX MIMO processor 220 may apply beamforming weights to the symbols of the data stream and the antennas transmitting the symbols therefrom.

[0038] Each transmitter 222 receives and processes a corresponding symbol stream to provide one or more analog signals, and further modulates (e.g., amplifies, filters, and / or up-converts) the analog signals to provide modulated signals suitable for transmission via a MIMO channel. NT modulated signals from transmitters 222a to 222t can then be transmitted from NT antennas 224a to 224t respectively.

[0039] At receiver system 250, the transmitted modulated signal is received by NR antennas 252a to 252r, and the signal received from each antenna 252 can be provided to a corresponding receiver (RCVR) 254a to 254r. Each receiver 254 can adjust (e.g., filter, amplify, and down-convert) the corresponding received signal, digitize the adjusted signal to provide a sample, and / or further process the sample to provide a corresponding "received" symbol stream.

[0040] The RX data processor 260 then receives and / or processes NR received symbol streams from NR receivers 254 based on specific receiver processing techniques to provide NT "detected" symbol streams. The RX data processor 260 can then demodulate, deinterleave, and / or decode each detected symbol stream to recover the service data of the data stream. The processing performed by the RX processor 260 can complement the processing performed by the TX MIMO processor 220 and TX data processor 214 at the transmitter system 210.

[0041] Processor 270 can periodically determine which pre-decoded matrix to use (discussed below). Processor 270 formulates a reverse link message including a matrix index portion and a rank portion.

[0042] The reverse link message may include various types of information related to the communication link and / or the received data stream. The reverse link message may then be processed by the TX data processor 238 (which may also receive service data from several data streams from the data source 236), modulated by the modulator 280, regulated by the transmitters 254a to 254r, and / or transmitted back to the transmitter system 210.

[0043] At transmitter system 210, the modulated signal from receiver system 250 is received via antenna 224, conditioned by receiver 222, demodulated by demodulator 240, and processed by RX data processor 242 to extract the reverse link message transmitted through receiver system 250. Next, processor 230 determines which pre-decoding matrix to use to determine beamforming weights, and then processes the extracted message.

[0044] Figure 3 An alternative simplified functional block diagram of a communication device according to one embodiment of the disclosed subject matter is presented. Figure 3 As shown, this can be achieved using the communication device 300 in a wireless communication system. Figure 1 UE (or AT) 116 and 122 or Figure 1The communication device 300 includes a base station (or AN) 100, and the wireless communication system can be an LTE system or an NR system. The communication device 300 may include an input device 302, an output device 304, a control circuit 306, a central processing unit (CPU) 308, a memory 310, program code 312, and a transceiver 314. The control circuit 306 executes the program code 312 in the memory 310 via the CPU 308, thereby controlling the operation of the communication device 300. The communication device 300 can receive signals input by a user via the input device 302 (e.g., a keyboard or keypad) and can output images and sounds via the output device 304 (e.g., a display or speaker). The transceiver 314 is used to receive and transmit wireless signals to pass the received signals to the control circuit 306 and wirelessly output signals generated by the control circuit 306. The communication device 300 in the wireless communication system can also be used to implement... Figure 1 AN100 in the middle.

[0045] Figure 4 This is an embodiment based on the disclosed subject matter. Figure 3 The diagram shows a simplified block diagram of program code 312. In this embodiment, program code 312 includes an application layer 400, a layer 3 portion 402, and a layer 2 portion 404, and is coupled to a layer 1 portion 406. Layer 3 portion 402 performs radio resource control. Layer 2 portion 404 performs link control. Layer 1 portion 406 performs and / or implements physical connections.

[0046] The new work item description (WID) for further mobility enhancement of NR provided in RP-212710 discusses one or more objectives for NR mobility enhancement. The following quotes from one or more sections of RP-212710:

[0047] 3. Argumentation

[0048] When a UE moves from the coverage area of ​​one cell to another, a serving cell change needs to be performed at some point. Currently, serving cell changes are triggered by L3 measurements and are accomplished via a reconfiguration triggered by RRC signaling. This reconfiguration includes synchronization for PCell and PSCell changes, and, where applicable, release and addition for SCells. All of these involve a full L2 (and L1) reset, which involves more latency, more overhead, and more downtime than beam-switching mobility. The goal of L1 / L2 mobility enhancement is to enable serving cell changes via L1 / L2 signaling with such low latency, low overhead, and low downtime.

[0049] 4 objectives

[0050] 4.1 Core Components: WI's Objectives

[0051] The detailed objectives of this work item are:

[0052] 1. Specify the mechanisms and procedures for reducing mobility latency based on L1 / L2 inter-cell mobility:

[0053] Configure and maintain multiple candidate cells to allow for rapid application of candidate cell configurations [RAN2, RAN3]

[0054] ○ Dynamic handover mechanism [RAN2, RAN1] between candidate serving cells (including SpCell and SCell) for potentially applicable scenarios based on L1 / L2 signaling.

[0055] ○L1 enhancement, including inter-cell beam management, L1 measurement and reporting, beam indication, and handling asynchronous situations in TA management [RAN1, RAN2]

[0056] ○ CU-DU interface signaling supporting L1 / L2 mobility (if required) [RAN3]

[0057] Note 1: FR2-specific enhancements are not excluded (if they exist).

[0058] Note 2: The procedure based on L1 / L2 inter-cell mobility can be applied to the following situations:

[0059] ■Serving cell changes within a CG from standalone, CA, and NR-DC scenarios

[0060] ■ Situation within CU and between DUs within CU (applicable to independent and CA)

[0061] ■ Same frequency and different frequency

[0062] ■ Both FR1 and FR2

[0063] Reconfiguration with synchronization (e.g., handover) and subcell additions is described in 3GPP specification 38.331v16.6.0, one or more of which are cited below:

[0064] 3.1 Definition

[0065] Primary cell: An MCG cell that operates on the primary frequency, in which the UE executes the initial connection establishment procedure or initiates a connection re-establishment procedure.

[0066] Primary SCG cell: For dual connectivity operations, the UE uses the SCG cell for random access when performing a reconfiguration with a synchronization procedure.

[0067] Sub-cell: For UEs configured to use CA, a cell that provides additional radio resources on top of a special cell.

[0068] Subcell group: For UEs configured to use dual connectivity, this includes a subset of serving cells with PSCell and zero or more subcells.

[0069] Serving Cell: For a UE in RRC_CONNECTED state and not configured to use CA / DC, there exists only one serving cell, which includes the primary cell. For a UE in RRC_CONNECTED state and configured to use CA / DC, the term 'serving cell' is used to refer to a set of cells including the primary cell and all secondary cells.

[0070] Special Cell: For dual connectivity operations, the term special cell refers to the PCell of the MCG or the PSCell of the SCG. In other cases, the term special cell refers to the PCell.

[0071] 5.3.5.5 Cell Group Configuration

[0072] 5.3.5.5.1 Overview

[0073] The network configures the UE using a Master Cell Group (MCG) and zero or one Secondary Cell Group (SCG). In (NG)EN-DC, the MCG is configured as specified in TS 36.331

[10] , and for NE-DC, the SCG is configured as specified in TS 36.331

[10] . The network provides the configuration parameters for the cell groups in the CellGroupConfig IE.

[0074] Based on the received CellGroupConfig IE, the UE performs the following actions:

[0075] 1> If CellGroupConfig contains spCellConfig with reconfigurationWithSync:

[0076] 2> Perform a synchronized reconfiguration according to 5.3.5.5.2;

[0077] 2> Restore all suspended radio bearers except for the SRB of the source cell group, restore SCG transmission of all radio bearers, restore the BH RLC channel, and restore SCG transmission of the BH RLC channel used for IAB-MT (if suspended).

[0078] 1> If CellGroupConfig contains rlc-BearerToReleaseList:

[0079] 2> Perform RLC bearer release as specified in 5.3.5.5.3;

[0080] 1> If CellGroupConfig contains rlc-BearerToAddModList:

[0081] 2> Perform RLC bearer addition / modification as specified in 5.3.5.5.4;

[0082] 1> If CellGroupConfig contains mac-CellGroupConfig:

[0083] 2> Configure the MAC entity for this cell group as specified in 5.3.5.5.5;

[0084] 1> If CellGroupConfig contains sCellToReleaseList:

[0085] 2> Perform SCell release as specified in 5.3.5.5.8;

[0086] 1> If CellGroupConfig contains spCellConfig:

[0087] 2> Configure SpCell as specified in 5.3.5.5.7;

[0088] 1> If CellGroupConfig contains sCellToAddModList:

[0089] 2> Add / modify SCells as specified in 5.3.5.5.9;

[0090] 5.3.5.5.2 Features synchronized reconfiguration

[0091] The UE will perform the following actions to perform a synchronous reconfiguration.

[0092] 1> If AS security is not activated, then the action is performed as specified in 5.3.11 after going to RRC_IDLE, with the release reason being "other", and the program ends after the release reason;

[0093] 1> If DAPS bearer is not configured:

[0094] 2> Stop the timer T310 for the corresponding SpCell (if it is running);

[0095] 1> If this procedure is executed against MCG:

[0096] 2> If timer T316 is running;

[0097] 3> Stop timer T316;

[0098] 3> Clear the information contained in the VarRLF-Report (if it exists);

[0099] 2> Resume MCG transfer (if paused).

[0100] 1> Stop the timer T312 of the corresponding SpCell (if it is running);

[0101] 1> Start the timer T304 for the corresponding SpCell, where the timer value is set to t304, as included in reconfigurationWithSync;

[0102] 1> If frequencyInfoDL is included:

[0103] 2> Treat the target SpCell as an SpCell on the SSB frequency indicated by frequencyInfoDL, which has a physical cell identity indicated by physCellId;

[0104] 1> Otherwise:

[0105] 2> Treat the target SpCell as the SpCell on the SSB frequency of the source SpCell, which has a physical cell identity indicated by physCellId;

[0106] 1> Begin DL synchronization with the target SpCell;

[0107] 1> Apply the specified BCCH configuration defined in 9.1.1.1 to the target SpCell;

[0108] 1> Obtain the MIB of the target SpCell, which is scheduled as specified in TS 38.213

[13] ;

[0109] [...]

[0110] 2> Reset the MAC entity of this cell group;

[0111] 2> Treat the SCells of this cell group (if configured) that are not included in the SCellToAddModList of the RRCReconfiguration message as being in a deactivated state;

[0112] 2> Apply the value of newUE-Identity as the C-RNTI for this cell group;

[0113] 2> Configure the lower layer according to the received spCellConfigCommon;

[0114] 2> If the received reconfigurationWithSync contains any additional fields not previously covered, then configure the lower layer based on those additional fields.

[0115] 5.3.5.5.8 SCell Release

[0116] UE should:

[0117] 1> If the release is triggered by the receive of sCellToReleaseList:

[0118] 2> For each sCellIndex value contained in sCellToReleaseList:

[0119] 3> If the current UE configuration contains an SCell with the value sCellIndex:

[0120] 4> Release SCell.

[0121] 5.3.5.5.9 SCell Additions / Modifications

[0122] UE should:

[0123] 1> For each sCellIndex value contained in sCellToAddModList that is not part of the current UE configuration (SCell added):

[0124] 2> Based on sCellConfigCommon and sCellConfigDedicated, add an SCell corresponding to sCellIndex;

[0125] 2> If it contains sCellState:

[0126] 3> Configure the lower layer to treat SCell as active;

[0127] 2> Otherwise:

[0128] 3> Configure the lower layer to treat SCell as being in a deactivated state;

[0129] 2> For each measId in the measIdList contained within VarMeasConfig:

[0130] 3> If SCell is not applicable to associated measurements; and

[0131] 3> If the relevant SCell is contained in cellsTriggeredList defined within VarMeasReportList for this measId:

[0132] 4> Remove the relevant SCell from the cellsTriggeredList defined within VarMeasReportList for this measId;

[0133] 1> For each sCellIndex value contained in sCellToAddModList and which is part of the current UE configuration (SCell modification):

[0134] 2> Modify the SCell configuration according to sCellConfigDedicated;

[0135] 2> If sCellToAddModList is received in an RRCReconfiguration message containing reconfigurationWithSync, or in an RRCReconfiguration message containing reconfigurationWithSync embedded in an RRCReconfiguration message, an E-UTRA RRCConnectionReconfiguration message, or an E-UTRA RRCConnectionResume message:

[0136] 3> If it contains sCellState:

[0137] 4> Configure the lower layer to treat SCell as active;

[0138] 3> Otherwise:

[0139] 4> Configure the lower layer to treat SCell as being in a deactivated state.

[0140] Cell group configuration is described in 3GPP specification 38.331v16.6.0, and one or more parts of it are quoted below:

[0141] CellGroupConfig

[0142] CellGroupConfig is used to configure a primary cell group (MCG) or a secondary cell group (SCG). A cell group consists of a MAC entity, a set of logical channels with associated RLC entities, a primary cell (SpCell), and one or more secondary cells (SCell).

[0143] CellGroupConfig information element

[0144]

[0145]

[0146]

[0147]

[0148]

[0149]

[0150] -CellGroupId

[0151] The IE CellGroupId is used to identify cell groups. A value of 0 identifies the primary cell group. Other values ​​identify secondary cell groups. In this version of the specification, only values ​​0 and 1 are supported.

[0152] CellGroupId information element

[0153] CellGroupId::=INTEGER(0..maxSecondaryCellGroups)

[0154] -CellIdentity

[0155] IE CellIdentity is used to explicitly identify cells within a PLMN / SNPN.

[0156] CellIdentity information element

[0157] CellIdentity::=BIT STRING(SIZE(36))

[0158] -ServCellIndex

[0159] The IE ServCellIndex relates to a short identity used to uniquely identify the serving cell (i.e., PCell, PSCell, or SCell) within a cell group. A value of 0 is applied to the PCell, while a previously assigned SCellIndex is applied to the SCell.

[0160] ServCellIndex information element

[0161] ServCellIndex::=INTEGER(0..maxNrofServingCells-1)

[0162] -ServingCellConfig

[0163] The IE ServingCellConfig is used to configure (add or modify) a UE using a serving cell, which can be an SpCell, an MCG, or an SCG SCell. Most of the parameters in this document are UE-specific, but some are cell-specific (e.g., in the bandwidth section of a separate configuration). Reconfiguration between PUCCH and PUCCH-free SCells only uses SCell release and add support.

[0164] ServingCellConfig information element

[0165]

[0166]

[0167]

[0168]

[0169]

[0170] TCI-State

[0171] The IE TCI-State associates one or two DL reference signals with the corresponding quasi-colocation (QCL) type.

[0172] TCI-State Information Element

[0173]

[0174]

[0175]

[0176] -TCI-StateId

[0177] The IE TCI-StateId is used to identify a TCI-State configuration.

[0178] TCI-StateId information element

[0179] --ASN1START

[0180] --TAG-TCI-STATEID-START

[0181] TCI-StateId::=INTEGER(0..maxNrofTCI-States-1)

[0182] --TAG-TCI-STATEID-STOP

[0183] --ASN1STOP

[0184] The random access procedure is described in 3GPP specification 38.321v16.6.0, and one or more parts of it are quoted below:

[0185] 5.1 Random Access Procedure

[0186] 5.1.1 Random Access Program Initialization

[0187] According to TS 38.300[2], the random access procedure described in this section is initiated by a PDCCH command, the MAC entity itself, or an RRC of an event. In a MAC entity, there is only one random access procedure in progress at any given time. The random access procedure on the SCell will be initiated only by a PDCCH command where ra-PreambleIndex is different from 0b000000.

[0188] Note 1: If a new random access procedure is triggered while another random access procedure is already in progress in the MAC entity, the UE implementation scheme determines whether to continue the ongoing procedure or start the new procedure (e.g., for an SI request).

[0189] Note 2: If a random access procedure triggered by a PDCCH command exists at the same time that the UE receives another PDCCH command indicating the same random access preamble, PRACH mask index and uplink carrier, then the random access procedure is considered to be the same as the random access procedure in progress and is not re-initialized.

[0190] When a random access procedure is initiated on the serving cell, the MAC entity will:

[0191] 1> Clear the Msg3 buffer;

[0192] 1> Clear the MSGA buffer;

[0193] 1> Set PREAMBLE_TRANSMISSION_COUNTER to 1;

[0194] 1> Set PREAMBLE_POWER_RAMPING_COUNTER to 1;

[0195] 1> Set PREAMBLE_BACKOFF to 0ms;

[0196] 1> Set POWER_OFFSET_2STEP_RA to 0dB;

[0197] 1> If the carrier used for the random access procedure is transmitted explicitly:

[0198] 2> Select the transmitted carrier to perform the random access procedure;

[0199] 2> Set PCMAX to the PCMAX,f,c of the transmitted carrier.

[0200] 1> Otherwise, if the carrier used for the random access procedure is not explicitly transmitted; and

[0201] 1> If the serving cell used for the random access procedure is configured to use the supplementary uplink as specified in TS 38.331[5]; and

[0202] 1> If the downlink path loss reference RSRP is less than rsrp-ThresholdSSB-SUL:

[0203] 2> Select a SUL carrier to perform random access procedures;

[0204] 2> Set PCMAX to PCMAX,f,c with SUL carrier.

[0205] 1> Otherwise:

[0206] 2> Select an NUL carrier to perform random access procedures;

[0207] 2> Set PCMAX to PCMAX,f,c with NUL carrier.

[0208] 1> Perform the BWP operation as specified in section 5.15;

[0209] 1> If the random access procedure is initiated by a PDCCH command and if the ra-PreambleIndex explicitly provided by the PDCCH is not 0b000000; or

[0210] 1> If a random access procedure is initiated for an SI request (as specified in TS 38.331[5]) and the random access resource for the SI request has been explicitly provided by the RRC; or

[0211] 1> If a random access procedure is initiated for SpCell beam fault recovery (as specified in Section 5.17) and if the RRC has explicitly provided contention-free random access resources for a 4-step RA type beam fault recovery request for the BWP selected for the random access procedure; or

[0212] 1> If a random access procedure is initiated for a synchronous reconfiguration and if a contention-free random access resource for a 4-step RA type has been explicitly provided in rach-ConfigDedicated for the BWP selected for the random access procedure:

[0213] 2> Set RA_TYPE to 4-stepRA.

[0214] …

[0215] [...]

[0216] 1> Perform initialization of variables specific to the random access type specified in section 5.1.1a;

[0217] [...]

[0218] 2> Execute the random access resource selection procedure (see section 5.1.2).

[0219] 5.1.2 Random Access Resource Selection

[0220] If the selected RA_TYPE is set to 4-stepRA, then the MAC entity will:

[0221] [...]

[0222] 1> Otherwise, if ra-PreambleIndex has been explicitly provided via PDCCH; and

[0223] 1> If ra-PreambleIndex is not 0b000000:

[0224] 2> Set PREAMBLE_INDEX to the transmitted ra-PreambleIndex;

[0225] 2> Select the SSB transmitted by PDCCH.

[0226] 1> Otherwise, if the contention-free random access resource associated with the SSB has been explicitly provided in rach-ConfigDedicated, and at least one of the associated SSBs with an SS-RSRP higher than rsrp-ThresholdSSB is available:

[0227] 2> Select the SSB with an SS-RSRP higher than that of the associated SSB;

[0228] 2> Set PREAMBLE_INDEX to the ra-PreambleIndex corresponding to the selected SSB.

[0229] 1> Otherwise, if the contention-free random access resource associated with the CSI-RS has been explicitly provided in rach-ConfigDedicated, and at least one CSI-RS with a CSI-RSRP higher than rsrp-ThresholdCSI-RS among the associated CSI-RSs is available:

[0230] 2> Select the CSI-RS with a higher CSI-RSRP than rsrp-ThresholdCSI-RS among the associated CSI-RS;

[0231] 2> Set PREAMBLE_INDEX to the ra-PreambleIndex corresponding to the selected CSI-RS.

[0232] [...]

[0233] 1> Otherwise (i.e., for contention-based random access preamble selection):

[0234] 2> If at least one of the SSBs with an SS-RSRP higher than rsrp-ThresholdSSB is available:

[0235] 3> Select an SSB with an SS-RSRP higher than rsrp-ThresholdSSB.

[0236] 2> Otherwise:

[0237] 3> Select any SSB.

[0238] [...]

[0239] 2> Randomly select a random access preamble from the random access preambles associated with the selected SSB and the selected random access preamble group with equal probability.

[0240] 2> Set PREAMBLE_INDEX to the selected random access preamble.

[0241] [...]

[0242] 1> Otherwise, if SSB is selected as above:

[0243] 2> The next available PRACH timing is determined based on the PRACH timing corresponding to the selected SSB as permitted by the restrictions given by ra-ssb-OccasionMaskIndex (if configured) or indicated by PDCCH (the MAC entity will randomly select a PRACH timing with equal probability from the consecutive PRACH timings corresponding to the selected SSB in accordance with section 8.1 of TS 38.213[6]; the MAC entity may take into account the possibility of measurement gaps when determining the next available PRACH timing corresponding to the selected SSB).

[0244] 1> Otherwise, if CSI-RS is selected as above:

[0245] 2> If no contention-free random access resource is associated with the selected CSI-RS:

[0246] 3> The next available PRACH timing is determined based on the PRACH timing of the candidateBeamRSList corresponding to the selected CSI-RS quasi-co-located candidateBeamRSList as specified in TS 38.214[7], as permitted by the restrictions given by ra-ssb-OccasionMaskIndex (if configured). (The MAC entity will randomly select a PRACH timing with equal probability from the consecutive PRACH timings corresponding to the selected CSI-RS quasi-co-located SSB according to section 8.1 of TS 38.213[6]; the MAC entity may take into account the possibility of measurement gaps when determining the next available PRACH timing corresponding to the selected CSI-RS quasi-co-located SSB).

[0247] 2> Otherwise:

[0248] 3> Determine the next available PRACH timing based on the PRACH timing corresponding to the selected CSI-RS in the ra-OccasionList (the MAC entity will randomly select the PRACH timing from the PRACH timings corresponding to the selected CSI-RS that occur simultaneously but on different subcarriers with equal probability; the MAC entity may consider the possibility of measurement gaps when determining the next available PRACH timing corresponding to the selected CSI-RS).

[0249] 1> Execute the random access preamble transmission procedure (see Chapter 5.1.3).

[0250] 5.1.3 Random Access Preamble Transmission

[0251] For each random access preamble, the MAC entity will:

[0252] [...]

[0253] 1>Set PREAMBLE_RECEIVED_TARGET_POWER to preambleReceivedTargetPower+DELTA_PREAMBLE+(PREAMBLE_POWER_RAMPING_COU NTER-1)×PREAMBLE_POWER_RAMPING_STEP+POWER_OFFSET_2STEP_RA;

[0254] 1> In addition to the contention-free random access preamble used for beam fault recovery requests, calculate the RA-RNTI associated with the PRACH timing in which the random access preamble is transmitted.

[0255] 1> Send instructions to the physical layer to transmit the random access preamble using the selected PRACH timing, the corresponding RA-RNTI (if available), PREAMBLE_INDEX, and PREAMBLE_RECEIVED_TARGET_POWER.

[0256] 5.1.4 Random Access Response Reception

[0257] Once the random access preamble is transmitted, the MAC entity will: regardless of whether a measurement gap is possible.

[0258] 1> If the contention-free random access preamble used for beam fault recovery requests is transmitted via the MAC entity:

[0259] 2> Starting from the end of the random access preamble transmission, as specified in TS 38.213[6], the ra-ResponseWindow configured in BeamFailureRecoveryConfig begins at the first PDCCH timing;

[0260] 2> When ra-ResponseWindow is running, listen for PDCCH transmissions on the search space indicated by the recoverySearchSpaceId of the SpCell identified by C-RNTI.

[0261] 1> Otherwise:

[0262] 2> Starting from the end of the random access preamble transmission, as specified in TS 38.213[6], the ra-ResponseWindow configured in RACH-ConfigCommon will begin at the first PDCCH timing;

[0263] 2> When ra-ResponseWindow is running, listen for the PDCCH of the SpCell that receives a random access response identified by RA-RNTI.

[0264] 1> If a lower-layer receiver on the serving cell from which the preamble is transmitted receives a notification of a PDCCH transmission in the search space indicated by recoverySearchSpaceId; and

[0265] 1> If the PDCCH transmission is addressed to C-RNTI; and

[0266] 1> If the contention-free random access preamble used for beam fault recovery requests is transmitted via the MAC entity:

[0267] 2> The random access procedure is considered to have been successfully completed.

[0268] 1> Otherwise, if valid (as specified in TS 38.213[6]) the downlink assignment has been received on the PDCCH of RA-RNTI and the received TB has been successfully decoded:

[0269] 2> If the random access response contains a MAC sub-PDU with a backoff indicator:

[0270] 3> Use Table 7.2-1 to set PREAMBLE_BACKOFF to the value of the BI field of the MAC sub-PDU by multiplying it by SCALING_FACTOR_BI.

[0271] 2> Otherwise:

[0272] 3> Set PREAMBLE_BACKOFF to 0ms.

[0273] 2> If the random access response contains a MAC sub-PDU with a random access preamble identifier corresponding to the transmitted PREAMBLE_INDEX (see section 5.1.3):

[0274] 3> This random access response is considered to have been successfully received.

[0275] 2> If the random access response is considered to have been successfully received:

[0276] 3> If the random access response contains a MAC sub-PDU with only RAPID:

[0277] 4> This random access procedure is considered to have completed successfully;

[0278] 4> Indicate to the upper layer that an acknowledgment has been received regarding the SI request.

[0279] 3> Otherwise:

[0280] 4> Apply the following actions to the serving cell that transmits the random access preamble:

[0281] 5> Process the received timing advance command (see section 5.2);

[0282] 5> Indicate the preambleReceivedTargetPower and the power uniformity applied to the latest random access preamble transmission (i.e., (PREAMBLE_POWER_RAMPING_COUNTER-1)×PREAMBLE_POWER_RAMPING_STEP) to the lower layer;

[0283] 5> If a random access procedure for SCell is executed on an uplink carrier in which pusch-Config is not configured:

[0284] 6> Ignore the received UL approval.

[0285] 5> Otherwise:

[0286] 6> Process the received UL grant value and indicate the value to the lower layer.

[0287] 4> If the MAC entity does not select a random access preamble from the contention-based random access preamble:

[0288] 5> The random access procedure is considered to have been successfully completed.

[0289] 4> Otherwise:

[0290] 5> Set TEMPORARY_C-RNTI to the value received in the random access response;

[0291] 5> If this is the first successful random access response received within this random access procedure:

[0292] 6> If no transmission is made for the CCCH logical channel:

[0293] 7> Indicate to the multiplexing and aggregation entity that C-RNTI MAC CE will be included in subsequent uplink transmissions.

[0294] 6> If a random access procedure is initiated for SpCell beam fault recovery and spCell-BFR-CBRA is configured with a value of true:

[0295] 7> Indicate to the multiplexing and aggregation entity that a BFR MAC CE or a truncated BFR MAC CE will be included in subsequent uplink transmissions.

[0296] 6> Obtain the MAC PDU to transfer from the multiplexed and collection entity and store it in the Msg3 buffer.

[0297] 5.1.5 Dispute Resolution

[0298] Once Msg3 is transmitted, the MAC entity will:

[0299] 1> Retransmit each HARQ in the first symbol after Msg3 transmission ends, start ra-ContentionResolutionTimer and restart ra-ContentionResolutionTimer;

[0300] 1> Regardless of whether a measurement gap is possible, PDCCH is monitored while ra-ContentionResolutionTimer is running;

[0301] 1> If a notification is received from the lower layer that the PDCCH transmission of SpCell has been received:

[0302] 2> If C-RNTI MAC CE is included in Msg3:

[0303] 3> If a random access procedure is initiated for SpCell beam fault recovery (as specified in section 5.17) and the PDCCH transmission is addressed to C-RNTI; or

[0304] 3> If a random access procedure is initiated via a PDCCH command and the PDCCH transmission addresses to C-RNTI; or

[0305] 3> If a random access procedure is initiated by the MAC sublayer itself or by the RRC sublayer and the PDCCH transmission addresses to the C-RNTI and contains UL permission for the new transmission:

[0306] 4> It is considered that this dispute has been successfully resolved;

[0307] 4>Stop ra-ContentionResolutionTimer;

[0308] 4> Discard TEMPORARY_C-RNTI;

[0309] 4> This random access procedure is considered to have been successfully completed.

[0310] 2> Otherwise, if the CCCH SDU is contained in Msg3 and the PDCCH transmission is addressed to its TEMPORARY_C-RNTI:

[0311] 3> If the MAC PDU is successfully decoded:

[0312] 4>Stop ra-ContentionResolutionTimer;

[0313] 4> If the MAC PDU contains the UE contention resolution identifier MAC CE; and

[0314] 4> If the UE contention resolution identifier in the MAC CE matches the CCCH SDU transmitted in Msg3:

[0315] 5> This contention is considered successfully resolved, and the decomposition and de-reuse of the MAC PDU is terminated;

[0316] 5> If this random access procedure is initiated in response to an SI request:

[0317] 6> Indicate to the upper layer that acknowledgment has been received for the SI request.

[0318] 5> Otherwise:

[0319] 6> Set C-RNTI to the value of TEMPORARY_C-RNTI;

[0320] 5> Discard TEMPORARY_C-RNTI;

[0321] 5> This random access procedure is considered to have been successfully completed.

[0322] 4> Otherwise:

[0323] 5> Discard TEMPORARY_C-RNTI;

[0324] 5> It is considered that the contention resolution is unsuccessful and the successfully decoded MAC PDU is discarded.

[0325] …

[0326] 5.1.6 Complete the random access procedure

[0327] After completing the random access procedure, the MAC entity will:

[0328] 1> Discard any explicitly transmitted contention-free random access resources for 2-step RA type and 4-step RA type (except for 4-step RA type contention-free random access resources for beam fault recovery requests) (if any);

[0329] 1> Clear the HARQ buffers used for transmitting MAC PDUs in the Msg3 and MSGA buffers.

[0330] After the random access procedure initiated in response to the DAPS handover is successfully completed, the target MAC entity will:

[0331] 1> Indicate to the upper layer that the random access procedure has been successfully completed.

[0332] 5.9 SCell Activation / Deactivation

[0333] If a MAC entity is configured to use one or more SCells, then the network can activate and deactivate the configured SCell. After a SCell is configured, it is deactivated unless the sCellState parameter is set to activate for that SCell by the upper layer.

[0334] Activate and deactivate a configured SCell using the following steps:

[0335] - Receive the SCell activation / deactivation MAC CE as described in section 6.1.3.10;

[0336] - Configure a sCellDeactivationTimer for each configured SCell (except for SCells configured to use PUCCH): the associated SCell is deactivated after its expiration;

[0337] - Each configured SCell is configured with sCellState: If configured, the associated SCell is activated after the SCell is configured.

[0338] The MAC entity will target each configured SCell:

[0339] 1> If the SCell is configured to use the sCellState set to activate after the SCell is configured, or if a SCell activation / deactivation MAC CE is received for an activated SCell:

[0340] 2> If the SCell is deactivated before receiving this SCell activation / deactivation MAC CE; or

[0341] 2> If the SCell is configured to use sCellState, which is set to be activated after the SCell is configured:

[0342] 3> If firstActiveDownlinkBWP-Id is not set to a dormant BWP:

[0343] 4> Activate the SCell according to the timing limit for MAC CE activation in TS 38.213[6] and the timing limit for direct SCell activation in TS 38.133

[11] ; that is, apply normal SCell operation, including:

[0344] 5> SRS transmission on SCell;

[0345] 5> CSI report for SCell;

[0346] 5> PDCCH monitoring on SCell;

[0347] 5> Scell's PDCCH monitoring;

[0348] 5> PUCCH transmission on SCell (if configured).

[0349] 3> Otherwise (i.e., firstActiveDownlinkBWP-Id is set to the dormant BWP):

[0350] 4> Stop the bwp-InactivityTimer for this serving cell (if it is running).

[0351] 3> Activate the DL BWP and UL BWP indicated by firstActiveDownlinkBWP-Id and firstActiveUplinkBWP-Id respectively.

[0352] 2> Start or restart the sCellDeactivationTimer associated with the SCell according to the timing specified for MAC CE activation in TS 38.213[6] and the timing specified for direct SCell activation in TS 38.133

[11] ;

[0353] 2> If the active DL BWP is not a dormant BWP:

[0354] 3> Reinitialize any suspended configured uplink permissions of configured permission type 1 associated with this SCell according to the stored configuration (if it exists), and start them in the symbol according to the rules in section 5.8.2;

[0355] 3> Trigger PHR according to section 5.4.6.

[0356] 1> Otherwise, if a SCell activation / deactivation MAC CE is received to deactivate the SCell; or

[0357] 1> If the sCellDeactivationTimer associated with activating the SCell expires:

[0358] 2> According to the timing specified in TS 38.213[6], cancel the activation of SCell;

[0359] 2> Stop the sCellDeactivationTimer associated with SCell;

[0360] 2> Stop the bwp-InactivityTimer associated with SCell;

[0361] 2> Revoke the activation of any active BWP associated with SCell;

[0362] 2> Clear any configured downlink assignments and any configured uplink permission type 2 associated with SCell respectively;

[0363] 2> Clear any PUSCH resources used for semi-static CSI reports associated with SCell;

[0364] 2> Suspend any configured uplink permission type 1 associated with SCell;

[0365] 2> Clear all HARQ buffers associated with SCell;

[0366] 2> Cancel the triggered consistent LBT fault of SCell (if it exists).

[0367] 1> If the PDCCH on the SCell is already activated, indicating uplink grant or downlink assignment; or

[0368] 1> If the PDCCH indication on the serving cell of the activated SCell is used for uplink granting or downlink assignment of the activated SCell; or

[0369] 1> If the MAC PDU is transmitted in the configured uplink permission and no LBT fault indication is received from the lower layer; or

[0370] 1> If a MAC PDU is received in a configured downlink assignment:

[0371] 2> Restart the sCellDeactivationTimer associated with SCell.

[0372] 1> If SCell is deactivated:

[0373] 2> Do not transmit SRS on SCell;

[0374] 2> CSI is not reported for SCell;

[0375] 2> No transmission on UL-SCH on SCell;

[0376] 2> No transmission on the RACH on the SCell;

[0377] 2> Do not listen to the PDCCH on the SCell;

[0378] 2> Do not listen to the PDCCH of the SCell;

[0379] 2> Do not transmit PUCCH on SCell.

[0380] In TS 38.133

[11] , the HARQ feedback of a MAC PDU containing SCell activation / deactivation activation of a MAC CE will not be affected by PCell, PSCell, and PUCCH SCell interruptions caused by SCell activation / deactivation.

[0381] When SCell is reactivated, the ongoing random access procedure on SCell (if it exists) is aborted.

[0382] In NR, a UE can perform a handover procedure to switch from one cell to another. The UE performs the handover procedure in response to Radio Resource Control (RRC) signaling transmitted over the network. The RRC signaling includes cell information of the target cell. The network determines to initiate the handover procedure based on the UE's measurement report. Changes to the primary cell (PCell) and / or PSCell via synchronized reconfiguration (e.g., involving Layer 3 (L3) RRC messages) can involve higher latency and / or more overhead than Layer 1 (L1) / Layer 2 (L2) signaling (e.g., beam switching mobility). Alternatively and / or additionally, in operation on Frequency Range 2 (FR2), secondary cell group (SCG) changes will occur frequently, which may also result in high latency in UE-NW communication when using L3 handover. In this disclosure, the term "PSCell" can refer to the primary SCG cell and / or primary and secondary cells. Therefore, in the WID for further mobility enhancements of NR provided in RP-212710, the objective of the work item can be a mechanism and / or procedure based on L1 / L2 signaling to specify a dynamic handover mechanism between serving cells, including one or more special cells (SpCell) and / or one or more subcells (SCell). In this disclosure, the term "L1 / L2 signaling" can refer to L1 signaling and / or L2 signaling.

[0383] Figure 5The diagram illustrates a scenario 500 involving a UE, a first cell "Cell 0", and a second cell "Cell 1". The UE may receive first information 510 (e.g., a step 1 RRC message) from Cell 0, including Cell 1 configuration. The UE may perform an RRC connection with Cell 0. The Cell 1 configuration may include the serving cell configuration of Cell 1. Cell 1 may be a neighboring cell, SCell, or PCell of the UE. The UE may transmit an L1 / L3 measurement report 516 to Cell 0 (e.g., the L1 / L3 measurement report 516 may include measurements associated with Cell 1). Cell 0 may transmit second information 522 to the UE (e.g., a step 3 Downlink Control Information (DCI) or Media Access Control (MAC) Control Element (CE)) to initiate a mobility procedure associated with Cell 1. In response to receiving the second information 522, the UE may initiate and / or execute a mobility procedure 526 associated with Cell 1. Corresponding to different settings of information (e.g., first information 510 and / or second information 522) and / or procedures (e.g., procedures), the UE can execute one or more procedures for cell 1 (e.g., SCell addition and / or SCell release; PCell handover, etc.). This disclosure provides methods and procedures for implementing SCell handover in L1 / L2 mobility procedures.

[0384] The concept of this disclosure is that a UE can receive first information including one or more configurations of one or more cells. The UE can receive second information indicating to the UE an index / identity associated with at least one of the one or more cells. In this disclosure, the term "index / identity" may correspond to an index and / or an identity (id). The second information may not include (e.g., may not indicate) the configurations of the one or more cells. The second information may instruct the UE (e.g., issue an instruction to the UE) to initiate a mobility procedure (e.g., the second information may include signaling for initiating a mobility procedure and / or may include information about the mobility procedure, such as information requiring the execution of a mobility procedure). The UE may initiate a mobility procedure in response to receiving the second information. The UE may not initiate a mobility procedure in response to receiving the first information. Alternatively and / or additionally, in response to completing a mobility procedure initiated in response to receiving the second information, the UE may consider a first cell (e.g., at least one cell) of the one or more cells as the UE's serving cell. The UE may not consider the first cell of the one or more cells as the UE's serving cell in response to receiving the first information (and / or before executing and / or completing a mobility procedure initiated in response to receiving the second information).

[0385] The first and second information can be transmitted in different signaling messages. In this disclosure, the term "signaling" may correspond to at least one of a signal, a set of signals, a transmission, a message, etc.

[0386] The first and second information can be transmitted at different timings. In this disclosure, the term "timing" may correspond to at least one of time, time period, time unit, time slot, symbol, etc.

[0387] Example 1

[0388] In Example 1, the first information may include multiple cell groups and / or cell clusters (CGs), and the second information may indicate which cell group among the multiple cell groups is being applied.

[0389] The configuration may include the serving cell configuration.

[0390] The first information (received by the UE) may indicate one or more groups of cells (e.g., CellGroupConfig). In this disclosure, the term "group of cells" may correspond to a group of cells and / or CGs, wherein the group of cells and / or CGs may include one or more cells and / or one or more CGs. Each of the group or groups may include one or more cells and / or one or more CGs. Each of the group or groups may include a SpCell (e.g., PCell and / or PSCell) associated with the UE (e.g., the SpCell may be in a Primary Cell Group (MCG) associated with the UE, or in an SCG associated with the UE). Each of the group or groups may include one or more SCells associated with the UE (e.g., the one or more SCells may be in an MCG or an SCG). The first information may indicate the cell configuration associated with each cell (e.g., ServingCellConfig) (e.g., for each cell in the group or groups, the first information may indicate the cell configuration associated with that cell). Alternatively and / or additionally, the first information may indicate whether a cell in the group or groups is an SpCell (e.g., a candidate SpCell) or an SCell. Each of the group or groups may include one or more neighboring cells associated with the UE. Each of the group or groups may include one or more non-serving cells of the UE (e.g., the one or more non-serving cells may correspond to one or more cells associated with one or more Physical Cell Identifiers (PCIs) that are different from one or more serving cells). Each of the group or groups may be a group of candidate cells or a set of candidate cells for the UE to perform mobility procedures and / or L1 / L2 mobility. Alternatively and / or additionally, the first information may indicate the configuration of each of the group or groups of cells (e.g., CellGroupConfig).

[0391] Each of the one or more groups may be associated with an index / identity (e.g., an index / identity may be assigned). The index / identity may be provided in the first information (e.g., an indication).

[0392] The second information (received by the UE) may indicate an index / identity associated with the first group among the one or more groups. In response to a mobility procedure corresponding to the second information (e.g., initiation or completion of a mobility procedure) and / or in response to the receipt of the second information, the UE may add and / or activate one or more cells, including one, some, and / or all cells associated with the first group (e.g., indicated in the first group). In response to a mobility procedure (e.g., initiation or completion of a mobility procedure) and / or in response to the receipt of the second information, the UE may consider the one or more cells associated with the first group (e.g., indicated in the first group) as one or more serving cells. The second information may indicate whether the first group is used for an MCG or an SCG. Alternatively and / or additionally, the first information may not indicate whether the first group is used for an MCG or an SCG. The first group corresponds to a group of one or more cells and / or a group of one or more CGs.

[0393] Alternatively and / or additionally, when the first group is for a CG (e.g., an MCG or an SCG), in response to a mobility procedure corresponding to the second information (e.g., in response to the initiation or completion of a mobility procedure) and / or in response to the receipt of the second information, the UE may release, remove, and / or deactivate one or more cells in the CG (e.g., one or more cells initially in the CG and / or not indicated in the first group). Alternatively and / or additionally, the UE may release cells in a CG not associated with the first group (e.g., not indicated in the first group) in response to a mobility procedure (e.g., in response to the initiation or completion of a mobility procedure). For example, the UE may release cells in an SCG (e.g., in response to a mobility procedure) based on the first group being for an MCG (e.g., the first group is indicated to include cells in the MCG).

[0394] Alternatively and / or additionally, the second information may indicate an index / identity associated with a second group among the one or more groups. In response to a mobility procedure corresponding to the second information (e.g., initiation or completion of a mobility procedure) and / or in response to the receipt of the second information, the UE may add and / or activate one or more cells, including one, some, and / or all cells associated with the second group (e.g., indicated in the second group). The UE may, in response to a mobility procedure (e.g., initiation or completion of a mobility procedure) and / or in response to the receipt of the second information, treat the one or more cells associated with the second group (e.g., indicated in the second group) as one or more serving cells. The second information may indicate whether the second group is used for an MCG or an SCG. In some instances, the first and second groups may be used for different CGs (e.g., the first group may be used for a first CG, while the second group may be used for a second CG different from the first CG). The second group may correspond to a group of one or more cells and / or a group of one or more CGs.

[0395] Alternatively and / or additionally, when the second group is for a CG (e.g., MCG or SCG), in response to a mobility procedure corresponding to the second information (e.g., in response to the initiation or completion of a mobility procedure) and / or in response to the reception of the second information, the UE may release, remove, and / or revoke activation of one or more cells in the CG (e.g., one or more cells initially in the CG and / or not indicated in the second group).

[0396] For example, the second information may indicate the first set of identities of the UE's MCG and the second set of identities of the UE's SCG. In response to (i) initiating or completing a mobility procedure associated with the second information and / or (ii) receiving the second information (and / or when the above occurs), the UE may: (A) regard a cell in a set of cells (e.g., a set of cells associated with the first set of IDs, wherein the set of cells may correspond to the first set) as the serving cell in the MCG, and (B) regard a cell in a set of cells (e.g., a set of cells associated with the second set of IDs, wherein the set of cells may correspond to the second set) as the serving cell in the SCG.

[0397] Figure 6 The diagram illustrates scenario 600 associated with a UE and the network "NW". The UE may communicate with the NW via serving cell 5 and serving cell 6 in MCG 608. The NW provides (e.g., configures) first information 604 to the UE. First information 604 indicates candidate cell group CG1 including cells 1 and 2 and candidate cell group CG2 including cells 3 and 4. The NW transmits second information 616 to the UE (e.g., via MAC CE or DCI). Second information 616 may indicate the addition and / or activation of CG 1. Second information 616 may contain an index / identity of CG1. In response to receiving second information 616, the UE may initiate a mobility procedure to the NW to change one or more of the UE's cells to cells 1 and 2. In response to the initiation and / or completion of the mobility procedure, the UE may switch its serving cell to cells 1 and 2 (e.g., switch the serving cell from serving cell 5 and serving cell 6 to cells 1 and 2). The UE may release and / or revoke the activation of serving cell 5 and serving cell 6 (e.g., the UE's initial MCG and / or SCG cells) in response to a mobility procedure. The UE may consider cells 1 and 2 as its serving cells in response to a mobility procedure. In an example, after a mobility procedure, the UE may perform communication with the NW via serving cell 620, which includes serving cell 1 (e.g., cell 1) and serving cell 2.

[0398] Example 2

[0399] In Example 2, one or more different types of cells can be indicated in different groups or groups of cells.

[0400] In some instances, the first information may indicate multiple groups of cells. Each of these groups may be associated with a cell type (e.g., each of these groups may be associated with only a single cell type). In instances, the type may be one of a serving cell, a neighboring cell, a non-serving cell, or a cell with a PCI different from that of the serving cell. In instances, the multiple groups may include a group of one or more serving cells, a group of one or more neighboring cells, a group of one or more non-serving cells, and / or a group of one or more cells with a PCI different from that of one or more serving cells. The first information may indicate and / or classify different cell types in different groups within the multiple groups of cells.

[0401] In some instances, each of the multiple groups may be associated with an index / identity (e.g., an index / identity may be assigned). The index / identity may be provided in the first information (e.g., an indication).

[0402] The second information may indicate multiple indices / identities associated with multiple groups of cells. For example, each of the multiple indices / identities may indicate a group of cells within the multiple cell groups. The UE may, in response to a mobility procedure (e.g., in response to the initiation or completion of a mobility procedure) and / or in response to the receipt of the second information, regard the cells indicated in the multiple cell groups (indicated by the multiple indices / identities) as serving cells. The second information may indicate whether the multiple groups are for MCG or SCG.

[0403] Alternatively and / or additionally, when the plurality of groups are for a CG (e.g., MCG or SCG), in response to a mobility procedure corresponding to the second information (e.g., in response to the initiation or completion of a mobility procedure) and / or in response to the reception of the second information, the UE may release, remove and / or revoke activation of one or more cells in the CG (e.g., one or more cells initially indicated in the CG and / or not indicated in the plurality of groups).

[0404] Example 3

[0405] In Example 3, two groups of cells can be indicated for each CG.

[0406] In some instances, the first information may indicate cells associated with different CGs in different groups of cells. For example, the first information may indicate a first group of cells (e.g., associated with a first group ID). The first group of cells may include cells associated with the UE's MCG. The first information may indicate a second group of cells (e.g., associated with a second group ID). The second group of cells may include cells associated with the UE's SCG. The second information may indicate two indices / identities associated with two groups of cells in the one or more groups (e.g., the one or more groups of cells indicated by the first information). In some instances, the two groups of cells (indicated by the two indices / identities) may include a group of cells for each CG (e.g., the two groups of cells may include a group of cells for the UE's MCG and a group of cells for the UE's SCG). For example, the second information may indicate a first group identity and a second group identity to the UE. In response to (i) initiating or completing a mobility procedure associated with the second information and / or (ii) receiving the second information (and / or in the event of the foregoing), the UE may (A) consider the cell associated with the first group of cells as a serving cell in the MCG, and may consider the cell associated with the second group of cells as a serving cell in the SCG. In one example, the UE may consider the cell associated with the first group of cells as a serving cell in the MCG based on the fact that the two indices / identities indicated by the second information include a first index / identity corresponding to the first group of cells. In another example, the UE may consider the cell associated with the second group of cells as a serving cell in the SCG based on the fact that the two indices / identities indicated by the second information include a second index / identity corresponding to the first group of cells.

[0407] Example 4

[0408] In Example 4, the cells of two CGs may be included in a set of cells (e.g., indicated by the first information).

[0409] In some instances, the first information may indicate one or more groups of cells (e.g., one or more groups of MCG and SCG cells). Alternatively and / or additionally, each of the groups indicated in the first information may include one or more cells associated with the UE's MCG and one or more cells associated with the UE's SCG. Each of the groups may be associated with an index / identity (e.g., an index / identity may be assigned). The index / identity may be provided in the first information (e.g., indicated by the first information). The UE may distinguish between cells associated with the MCG and cells associated with the SCG based on the serving cell index / identity. Alternatively, each cell in a group of cells (e.g., a group of cells in the group or groups indicated by the first information) may be associated with an indication (e.g., a flag and / or parameter provided via the first information) for indicating which cell group the cell belongs to (e.g., MCG or SCG). The second information may indicate an index / identity associated with a group of cells in the group or groups (e.g., a group of cells including one or more cells associated with the MCG and one or more cells associated with the SCG). In response to (i) initiating or completing a mobility procedure associated with the second information and / or (ii) receiving the second information (and / or in the event of the above), the UE may (A) regard a first subset of cells in the set (e.g., the set of cells indicated by the index / identity indicated by the second information) as one or more serving cells of the UE's MCG, and (B) regard a second subset of cells in the set (e.g., the second subset of cells may include the remaining cells in the set other than the first subset of cells) as one or more serving cells of the UE's SCG.

[0410] Alternatively and / or additionally, in response to a mobility procedure corresponding to the second information (e.g., in response to the initiation or completion of a mobility procedure) and / or in response to the receipt of the second information, the UE may release, remove and / or revoke the activation of one or more cells in the MCG and / or release, remove and / or revoke the activation of one or more cells in the SCG (e.g., one or more cells initially in the MCG and / or SCG and / or not indicated by said set).

[0411] Figure 7The diagram illustrates a scenario 700 associated with a UE and a network "NW". The UE can perform communication with the NW serving cell 708. The serving cell 708 may include serving cell 5 and serving cell 6 in an MCG and serving cell 7 in an SCG. The NW provides (e.g., configures) first information 704 to the UE. The first information 704 indicates a candidate cell group CG1 including cells 1 and 2 and a candidate cell group CG2 including cells 3 and 4. The NW transmits second information 716 to the UE (e.g., via MAC CE or DCI). The second information 716 may indicate the addition and / or activation of CG 1. The second information 716 may contain an index / identity of CG1. The second information 716 may indicate the addition and / or activation of CG1 as an MCG. In response to receiving the second information 716, the UE may initiate a mobility procedure to the NW to change one or more cells in the UE's MCG to cells 1 and 2. In response to the initiation or completion of the mobility procedure, the UE may switch its serving cell in the MCG to cells 1 and 2. For example, the UE may switch the serving cell in the MCG from serving cell 5 and serving cell 6 to cell 1 and cell 2. The UE may release and / or deactivate serving cell 5 and serving cell 6 (e.g., the initial MCG cell) in response to a mobility procedure. The UE may not release and / or deactivate serving cell 7 in response to a mobility procedure (e.g., based on serving cell 7 being in the UE's SCG). In this example, after a mobility procedure, the UE may perform communication with the NW via serving cell 720, which includes serving cell 1 (e.g., cell 1) in the MCG, serving cell 2, and serving cell 7 in the SCG. Alternatively and / or additionally, the UE may release and / or deactivate serving cell 7 in response to a mobility procedure (e.g., release the SCG).

[0412] Example 5

[0413] In Embodiment 5, the second information may instruct one or more cells (e.g., SCell and / or SpCell) to undergo changes (e.g., addition, modification, and / or removal).

[0414] In some instances, the second information may indicate (e.g., may include and / or may implicitly or explicitly indicate) cell information associated with one or more first cells. The one or more first cells may include (e.g., may be) one or more SCells. The one or more first cells may include (e.g., may be) one or more PSCells (e.g., one or more target PSCells). The one or more first cells may include (e.g., may be) one or more non-serving cells, one or more neighboring cells, and / or one or more cells associated with one or more PCIs that are different from the UE's PCell (e.g., target cell or source cell).

[0415] In some instances, the first information may not indicate (and / or may not contain) cell information. The first information may not indicate the cell that will be considered the serving cell of the mobility procedure (e.g., the first information may not indicate a set of cells that the UE should consider as the serving cell of the mobility procedure). Alternatively and / or additionally, the first information may indicate the serving cell configuration (e.g., ServingCellconfig) associated with the cell containing the one or more first cells. The first information may not indicate the CG associated with the one or more first cells.

[0416] Each of the one or more first cells may be associated with an index / identity (e.g., may be assigned an index / identity). The index / identity may be provided in the first information (e.g., an indication). The index / identity may be a candidate cell identity.

[0417] The second information may indicate one or more indexes / identities of the index / identity assigned to the UE by the first information, wherein in response to (i) initiating or completing a mobility procedure or (ii) receiving the second information (and / or in the event of the foregoing), the UE will regard the one or more first cells associated with the one or more indexes / identities indicated in the second information as one or more serving cells. For example, the first information may indicate multiple indexes / identities, and the second information may indicate the one or more indexes / identities (among the multiple indexes / identities) associated with the one or more first cells, and the UE may regard the one or more first cells as one or more serving cells in response to (i) initiating or completing a mobility procedure or (ii) receiving the second information (and / or in the event of the foregoing). For example, the second information may include a bitmap. Each bit in the bitmap may indicate an index / identity provided (e.g., indicated) in the first information (e.g., each bit in the bitmap may be mapped to an index / identity among the multiple indexes / identities provided in the first information). For example, setting the first bit in the bitmap to '1' may indicate that the UE can add and / or activate a cell associated with the first index / identity provided in the first information (e.g., in response to initiating or completing a mobility procedure and / or receiving the second information). Setting the second bit in the bitmap to '0' may indicate that the UE may not add and / or activate a cell associated with the second index / identity provided in the first information (e.g., in response to initiating or completing a mobility procedure and / or receiving the second information). In an example, the one or more first cells may be associated with one or more of the plurality of indices / identities (e.g., assigned one or more of the indexes / identities), wherein one or more bits in the bitmap are set to '1'.

[0418] Alternatively and / or additionally, the ServCellIndex and / or SCellindex of the one or more first cells may be indicated (e.g., implicitly indicated) based on the order of the one or more first cells indicated in the second information (e.g., the ServCellIndex and / or SCellindex of the one or more first cells may be arranged in the order of the indications of the one or more first cells in the second information).

[0419] The UE may determine whether to add, change, modify, handover, and / or release a cell (e.g., PCell, SCell, or PSCell) or cell group (e.g., SCG) in association with a mobility procedure (e.g., when initiating, executing, or completing a mobility procedure) based on cell information indicated (e.g., included) in the second information. In some instances, the UE may not determine whether to add, change, modify, handover, and / or release an SCell or SCG solely based on the first information in association with a mobility procedure (e.g., when initiating, executing, or completing a mobility procedure).

[0420] Cell information may instruct the UE (e.g., by issuing a command to the UE) to add the one or more first cells (e.g., the one or more first cells may be one or more serving cells). Cell information may instruct the UE (e.g., by issuing a command to the UE) to treat the one or more first cells as serving cells (e.g., when initiating or completing a mobility procedure). Cell information may indicate one or more PCIs (e.g., physCellId) associated with the one or more first cells to be added (e.g., added as a serving cell or SCell). Alternatively and / or additionally, cell information may indicate one or more cell indices (e.g., ServCellIndex) associated with the one or more first cells to be added (e.g., added as a serving cell or SCell). Alternatively and / or additionally, cell information may indicate one or more cell indices (e.g., sCellIndex) associated with the one or more first cells to be added (e.g., added as a serving cell or SCell). The cell configuration of the one or more first cells (e.g., the cell configuration may include one or more parameters in sCellConfigCommon and / or sCellConfigDedicated) may be indicated in the first information.

[0421] Alternatively and / or additionally, the second information may instruct the UE (e.g., issue a command to the UE) to remove / release / deactivate one or more second cells (e.g., the one or more second cells may be one or more serving cells). In this disclosure, the term "remove / release / deactivate activation" may refer to removing, releasing, and / or deactivating activation (e.g., removing, releasing, and / or deactivating an activated cell). The second information may indicate one or more PCIs (e.g., physCellId) associated with the one or more second cells to be removed / released / deactivated. Alternatively and / or additionally, the second information may indicate one or more serving cell indices (e.g., ServCellIndex) and / or one or more SCell indices (e.g., SCellIndex) associated with the one or more second cells to be removed / released / deactivated. For example, the second information may include a bitmap. Each bit in the bitmap may indicate an index / identity provided (e.g., indicated) in the first information (e.g., each bit in the bitmap may map to one of a plurality of indices / identities provided in the first information). For example, setting the first bit in the bitmap to '1' may indicate that the UE can remove / release / revoke activation of a first cell associated with a first index / identity provided in the first information (e.g., in response to initiating or completing a mobility procedure and / or receiving the second information). Setting the second bit in the bitmap to '0' may indicate that the UE may not remove / release / revoke activation of a cell associated with a second index / identity provided in the first information (e.g., in response to initiating or completing a mobility procedure and / or receiving the second information). In an example, the one or more second cells may be associated with one or more of the plurality of indices / identities (e.g., assigned one or more indices / identities), wherein one or more bits in the bitmap are set to '1'. Alternatively and / or additionally, the second information may instruct the UE (e.g., issue an instruction to the UE) to remove / release / revoke activation of one, some, and / or all cells (e.g., all serving cells). Alternatively and / or additionally, the second information may instruct the UE (e.g., issue an instruction to the UE) to remove / release / revoke activation of one, some, and / or all cells (e.g., all serving cells of the CG). Alternatively and / or additionally, the UE may, in response to receiving the second information, remove / release / revoke the activation of one, some, and / or all cells (e.g., all serving cells of the CG).The second information may instruct the CG, wherein the UE may remove / release / revoke activation of one, some, and / or all cells of the CG (e.g., all serving cells of the CG), wherein, based on the second information instructing the CG, the one, some, and / or all cells of the CG (e.g., all serving cells of the CG) may be removed / released / revoke activated by the UE (e.g., in response to receiving the second information).

[0422] Example 6

[0423] In Example 6, the second information may indicate the addition and / or release of one or more cells.

[0424] The second information may indicate whether to add or remove / release / deactivate one or more cells (e.g., one or more cells indicated by the second information, such as one or more serving cells). For example, the second information may include fields associated with the one or more cells (e.g., bit fields or SCell status fields). The UE may determine whether to add or remove / release / deactivate the one or more cells based on the value of this field. For example, the second information may include a first field associated with one or more first cells, with its value set to '1'. The UE may add the one or more first cells (e.g., add the one or more first cells as one or more SCells of the UE) in response to (i) receiving the second information and / or (ii) a mobility procedure associated with the second information (e.g., in response to the completion or initiation of a mobility procedure). For example, the one or more first cells may be added based on the first field having a value set to '1'. The second information may include a second bit field associated with one or more second cells, with its value set to '0'. The UE may remove / release / deactivate the one or more second cells in response to (i) receiving the second information and / or (ii) a mobility procedure associated with the second information (e.g., in response to the completion or initiation of a mobility procedure). For example, the one or more second cells can be removed / released / revoked from activation based on the second bit field having a value set to '0'.

[0425] Alternatively and / or additionally, the second information may indicate (e.g., implicitly) whether to add or remove / release / deactivate one or more cells. For example, the UE may be configured to use a first set of SCells (e.g., before initiating a mobility procedure to a target cell). The UE may receive second information regarding the initiation of a mobility procedure to the target cell (e.g., after being configured to use the first set of SCells). The second information may indicate a second set of SCells. The second set of SCells may be a subset of the first set of SCells. The UE may remove / release / deactivate the second set of SCells. For example, the UE may remove / release / deactivate the second set of SCells in response to (i) the receipt of the second information and / or (ii) a mobility procedure (e.g., in response to the completion or initiation of a mobility procedure). Alternatively and / or additionally, the UE may remove / release / deactivate a third set of SCells (e.g., instead of removing / releasing / deactivating the second set of SCells). For example, the UE may remove / release / revoke activation of a third set of SCells in response to (i) receipt of the second information and / or (ii) a mobility procedure (e.g., in response to the completion or initiation of a mobility procedure). The third set of SCells may include (e.g., may be) one or more cells that are in the first set of SCells but not in the second set of SCells. Alternatively and / or additionally, the second information may indicate an index / identity associated with the UE's serving cell (e.g., an existing and / or configured serving cell) (e.g., the index / identity associated with the serving cell may be indicated via SCellindex).

[0426] Example 7

[0427] In Example 7, the second information may indicate CG.

[0428] In some instances, cell information (e.g., in the second information) may indicate whether one or more cells are added to the MCG or to the SCG. Alternatively and / or additionally, cell information may indicate a first subset of one or more cells to be added to the UE's MCG (e.g., one or more cells indicated by the second information) and a second subset of the one or more cells to be added to the UE's SCG. For example, cell information may include one or more bit fields associated with the one or more cells to identify the corresponding cell group of the one or more cells. For example, cell information may include bit fields associated with one or more cells set to '0', where setting the bit fields to '0' indicates that the one or more cells can be added to the UE's MCG (or removed / released / deactivated). Alternatively and / or additionally, bit fields associated with the one or more cells in the cell information may be set to '1', where setting the bit fields to '1' indicates that the one or more cells can be added to the UE's SCG (or removed / released / deactivated). Alternatively, cell information may indicate (e.g., implicitly indicate) a CG, wherein the one or more cells may be added to or removed from the CG indicated (e.g., implicitly indicated) by the cell information. For example, cell information may indicate one or more indices / identities (e.g., SCell identity or SCellIndex), wherein the one or more indices / identities may be used individually and / or in different ways (e.g., by the UE) in different CGs (e.g., the one or more indices / identities may include (i) a first index / identity that can be used to identify a first CG and / or one or more cells of the first CG, (ii) a second index / identity that can be used to identify a second CG and / or one or more cells of the second CG, etc.). The UE may determine the CG in which the one or more cells to be added to or removed / released / deactivated is based on the index / identity indicated in the cell information. Example 8

[0429] In Embodiment 8, the second information may indicate a cell type. In some instances, the cell information may indicate the cell type of each of the one or more cells. The cell type may be one of PCell, SCell, or PSCell. The UE may, in response to the initiation or completion of a mobility procedure, regard each of the one or more cells as a PCell, SCell, or PSCell based on the cell information. The UE may, in response to the receipt of the second information, regard each of the one or more cells as a PCell, SCell, or PSCell based on the cell information. For example, the UE may determine the cell type of the one or more cells indicated in the cell information based on the order of the one or more cells indicated in the cell information. For example, the first cell indicated in the cell information (e.g., the initial cell) may be a PCell. The second cell indicated in the cell information (e.g., a cell following the initial cell, such as a cell immediately after the initial cell) may be a PSCell. The third cell indicated in the cell information (e.g., a cell following the second cell, such as a cell immediately after the second cell) may be an SCell.

[0430] Alternatively and / or additionally, cell information may indicate (e.g., include) a field indicating the cell type associated with each of the one or more cells. For example, a 2-digit field in the cell information may be associated with a cell. A field may be set to '00' to indicate that the cell type is PCell. A field may be set to '01' to indicate that the cell type is PSCell. A field may be set to '10' to indicate that the cell type is SCell.

[0431] Alternatively and / or additionally, cell information may instruct the UE (e.g., issue a command to the UE) to activate or deactivate the one or more cells (e.g., one or more serving cells indicated by the second information) (e.g., in response to the initiation or completion of a mobility procedure). The UE may determine, based on the cell information, whether the one or more cells are considered active or deactivated (e.g., during or after the completion of a mobility procedure). Cell information may indicate SCell status fields (e.g., bit fields) indicating whether a cell (e.g., a serving cell among the one or more cells) is activated or deactivated upon initiation or completion of a mobility procedure. Cell information may indicate SCell status fields (e.g., bit fields) indicating the initial state of the cell (e.g., serving cell) (e.g., active or deactivated). Cell information may indicate one or more serving cell indices (e.g., ServCellIndex) or one or more SCell indices (e.g., SCellIndex) associated with the one or more cells. The UE may activate or deactivate the one or more cells (e.g., the one or more serving cells) in response to the completion or initiation of a mobility procedure. Alternatively and / or additionally, the UE may indicate (e.g., implicitly indicate, e.g., implicitly send a command to the UE) via cell information to activate or deactivate one or more cells. For example, the UE may determine whether to consider the SCell as active or deactivated during mobility procedures (or after mobility procedures have been completed) based on whether the SCell is indicated in the cell information (in the second information). If the SCell is indicated in the cell information (e.g., the cell information may indicate the SCell index and / or the SCell may be included in a list in the cell information), then the UE may consider the SCell as active. If the SCell is not indicated in the cell information, then the UE may consider the SCell as deactivated (and / or may consider the SCell as to be released).

[0432] Example 9

[0433] In Example 9, the second information may indicate handover and / or cell change.

[0434] In some instances, the second information may instruct the UE (e.g., issue a command to the UE) to change the serving cell. The second information may instruct the UE (e.g., issue a command to the UE) to change the first serving cell (e.g., SCell) to a second cell (e.g., serving cell, non-serving cell, or neighboring cell) when initiating or completing a mobility procedure. The second information may indicate the first cell identity (e.g., ServCellindex, physCellId, or SCellindex) and the second cell identity (e.g., ServCellindex, physCellId, or SCellindex, and / or the index / identity indicated in the first information). The first cell identity may be associated with the serving cell (e.g., SCell) associated with the UE, wherein the serving cell associated with the first cell identity may be an existing, configured, and / or activated serving cell (e.g., the serving cell may be existing, configured, and / or activated before initiating the mobility procedure). The second cell identity may be associated with a candidate serving cell / SCell (e.g., a neighboring cell or a configured serving cell of the UE before initiating the mobility procedure), wherein the candidate serving cell / SCell associated with the second cell identity may be deactivated (for the UE) before initiating the mobility procedure. In this disclosure, the term "serving cell / SCell" may refer to a serving cell and / or SCell. In response to receiving second information, based on the second information, the UE may remove / release / deactivate the serving cell associated with the first cell identity and add a candidate serving cell / SCell associated with the second cell identity (e.g., the UE may add a candidate serving cell / SCell as a serving cell / SCell). In response to the initiation or completion of the mobility procedure (and / or in response to the receipt of the second information), the UE may apply the SCellindex of the serving cell associated with the first cell identity to the cell associated with the second cell identity. Alternatively and / or additionally, in response to (i) the initiation or completion of the mobility procedure and / or (ii) the receipt of the second information, the UE may apply the ServCellindex of the serving cell associated with the first cell identity to the cell associated with the second cell identity.

[0435] Example 10

[0436] In Embodiment 10, the first information may indicate one or more beams associated with a group of cells in one or more sets of cells (e.g., the group of cells may be indicated by the first information). In some instances, the first information may indicate one or more beams associated with a group of cells in one or more sets of cells. The group may include one or more cells and / or CGs. The first information may indicate (e.g., include) the association between groups of beams and cells and / or CGs. Each group of cells or sets of cells may be associated with one or more beams (e.g., indicated to have one or more beams). For example, the first information may indicate at least one of the following: (i) one or more first beams associated with a first group of cells or sets of cells, (ii) one or more second beams associated with a second group of cells or sets of cells, etc. One or more cells and / or one or more CGs in the same group may be associated with the same one or more beams. For example, each cell and / or CG in the first group may be associated with the one or more first beams, and / or each cell and / or CG in the second group may be associated with the one or more second beams. One or more beams (e.g., the one or more first beams, the one or more second beams, etc.) may be indicated via one or more reference signals and / or one or more Transmission Configuration Indicator (TCI) statuses. Each of the one or more groups of cells and / or CGs may be associated with one or more reference signals (e.g., may be indicated as being associated with one or more reference signals). The one or more reference signals may be Synchronization Signal Blocks (SSBs) or Channel State Information Reference Signals (CSI-RS). Each of the one or more reference signals may be associated with one or more TCI states (e.g., one or more downlink (DL) or uplink (UL) TCI states) and / or spatial relation information. The one or more beams may be used to listen for and / or receive DL transmissions from one group of cells (of the one or more groups of cells) when activating and / or adding the group of cells and / or CGs in a mobility procedure (and / or after the activation and / or addition) or when receiving a second message (and / or after receiving the second message). In response to adding and / or activating one or more cells and / or one or more CGs in the group (e.g., the one or more cells and / or one or more CGs in the group may be added and / or activated in response to the following and / or when the following occurs: (i) receiving a second message, and / or (ii) initiating or completing a mobility procedure including adding and / or activating the one or more cells and / or one or more CGs), the UE may activate (and / or generate) the one or more beams for the one or more cells and / or one or more CGs.Alternatively and / or additionally, the first information may instruct and / or configure one or more additional beams (in addition to the one or more beams associated with the set of cells), wherein the UE does not activate the one or more additional beams when adding and / or activating the set of cells and / or CG (e.g., in response to the second information and / or mobility procedure).

[0437] For example, each of the group or multiple groups of cells may be associated with (and / or indicated as associated with) a TCI state (e.g., DL or ULTCI state) in the first information (e.g., the TCI state may be indicated via TCI-StateId). For example, the first group of cells in the group or multiple groups of cells may be associated with (and / or indicated as associated with) a first TCI state identity. In an example, the first information may indicate a first TCI state identity and / or may indicate that the first TCI state identity is associated with a first group of cells. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first group of cells and / or (ii) receiving second information associated with adding and / or activating the first group of cells (and / or when the above occurs), the UE may activate a beam (and / or reference signal) associated with the first TCI state ID to listen for DL ​​signaling (and / or transmit UL data) on one or more cells in the first group of cells. In some instances, the second information may not indicate a TCI state or reference signal associated with the first group of cells.

[0438] Alternatively and / or additionally, each of the group or groups of cells may be associated with (and / or indicated as associated with) one or more spatial relationship information (e.g., indicated via one or more spatial relationship information IDs). For example, a first group of cells may be associated with (and / or indicated as associated with) a first spatial relationship information ID (e.g., the first spatial relationship information ID may be indicated in first information, such as where the first information indicates that the first spatial relationship information ID is associated with the first group of cells). In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first group of cells and / or (ii) receiving second information associated with adding and / or activating the first group of cells (and / or when the above occurs), the UE may activate a beam (and / or reference signal) associated with the first spatial relationship information ID for UL transmission (e.g., Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH) transmission) on one or more cells in the first group of cells. In some instances, the second information may not indicate the first spatial relationship information ID associated with the first group of cells.

[0439] In some instances, the second information may not indicate the set or sets of TCI status or spatial relationship information.

[0440] Example 11

[0441] In embodiment 11, one or more multiple transmit and receive point (mTRP) beams may be indicated (e.g., the one or more mTRP beams may be indicated by first information).

[0442] In some instances, each of the group or multiple cell groups may be indicated with multiple beams (e.g., mTRP beams). Each of the group or multiple cell groups may be indicated with a TCI status list (e.g., a list of DL or UL TCI statuses) (e.g., the TCI status list may be indicated in first information, such as where the first information indicates that the TCI status list is associated with a group of cells in the group or multiple cell groups). The TCI status list may indicate multiple TCI statuses (e.g., multiple DL or UL TCI statuses). Each of the multiple TCI statuses may be associated with multiple TRPs (e.g., different TRPs). The multiple TRPs may be associated with one or more cells in the group of cells and / or CG. Alternatively and / or additionally, in addition to being associated with the one or more cells in the group of cells, the multiple TRPs may also be associated with additional cells having a PCI different from that of cells in the group of cells and / or CG. For example, a first group of cells (of the group or groups of cells) may be associated with (and / or indicated as associated with) multiple TCI states in a TCI state list (e.g., the TCI state list and / or the multiple TCI states may be indicated in first information, such as where the first information indicates that the TCI state list and / or the multiple TCI states are associated with the first group of cells). In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first group of cells and / or (ii) receiving second information associated with adding and / or activating the first group of cells (and / or when the above occurs), the UE may activate multiple TCI states in a TCI state list for the first group of cells, wherein the multiple TCI states and / or the TCI state list are associated with the first group of cells.

[0443] Example 12

[0444] In embodiment 12, the first information may indicate multiple beams, and the second information may activate one of the multiple beams (e.g., one beam) (e.g., the UE may activate the beam based on the second information).

[0445] In some instances, the first information may indicate a first set of beams associated with a group of cells in one or more groups of cells. The second information may indicate a second set of beams associated with the group. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the group of cells and / or (ii) receiving the second information associated with adding and / or activating the group of cells and / or CGs (and / or when the above occurs), the UE may activate a second set of beams (indicated in the second information) for one or more cells and / or one or more CGs associated with the group of cells and / or CGs. The UE may not activate one or more beams in the first set of beams but not in the second set of beams. The second set of beams may be a subset of the first set of beams. The second information may indicate the second set of beams via one or more indices / identities (e.g., SSB index or CSI-RS resource ID and / or TCI status identity). For example, each beam in the first set of beams may be associated with an index / identity (e.g., assigned an index / identity). The second information may contain the one or more indices / identities of one or more beams in the first set of beams.

[0446] The second set of beams may include (and / or indicate) a single beam. For example, the second information may indicate a reference signal and / or TCI state associated with the single beam. The UE may activate the single beam for cells (e.g., all cells) in a set of cells when adding and / or activating a set of cells (e.g., adding and / or activating the set of cells in response to the second information and / or in response to a mobility procedure initiated by the second information).

[0447] Alternatively and / or additionally, the second set of beams may include (and / or indicate) multiple beams. Each of the multiple beams may be associated with a different TRP of a cell in the set of cells. The UE may activate multiple beams to receive and / or listen to different TRPs of the cell in response to activating and / or adding the cell (e.g., in response to receiving second information and / or in response to initiating or completing a mobility procedure).

[0448] Example 13

[0449] In Example 13, the UE can activate different beams for different cells in a group.

[0450] In some instances, the first information can indicate different beams for different cells within the same group of the one or more groups of cells.

[0451] For example, the first information may indicate a first group of cells (in the group or groups of cells). The first information may indicate a first beam for the first cell in the first group of cells (e.g., the first information may include an SSB index, CSI-RS resource ID, and / or TCI status identity associated with and / or indicating the first beam) and a second beam for the second cell in the first group of cells. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first group of cells and / or (ii) receiving second information associated with adding and / or activating the first group of cells (which includes the first and second cells) (and / or when the above occurs), the UE may activate the first beam for the first cell (e.g., when activating the first cell), and the UE may activate the second beam for the second cell (e.g., when activating the second cell). The first beam and the second beam may be different beams.

[0452] Example 14

[0453] In embodiment 14, the beam to be used can be indicated (e.g., implicitly indicated) based on cell indication. The first information may indicate a cell (e.g., a reference cell) associated with the same beam update of a group of cells. The first information may indicate a simultaneous TCI-UpdateList for one cell and / or a group of cells.

[0454] In some instances, the first information may indicate a reference cell for a first group of the one or more groups of cells. The reference cell may be a UE's SCell or PCell (e.g., the UE's current and / or existing SCell or PCell). The reference cell may be the UE's serving cell (e.g., SCell or PCell). The reference cell may be a non-serving cell (e.g., a cell with a PCI different from any serving cell of the UE). In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first group of cells and / or (ii) receiving second information associated with adding and / or activating the first group of cells (and / or, if the above occurs), the UE may activate one or more beams and / or one or more TCI states for one or more cells in the first group of cells, wherein the one or more beams and / or the one or more TCI states are the same as (and / or associated with) one or more beams of the reference cell (e.g., one or more activated / working / current beams of the reference cell) and / or one or more TCI states of the reference cell (e.g., one or more activated / working / current TCI states of the reference cell). In this disclosure, the terms "activated / working / current beam" may correspond to an active beam that is being used by a UE (e.g., the UE can use the beam to communicate with the cell) and / or is currently active. In this disclosure, the terms "activated / working / current TCI state" may correspond to an active TCI state that is being used by a UE (e.g., the UE can use the TCI state to communicate with the cell) and / or is currently active.

[0455] For example, the first information may indicate a first reference cell in a first group of cells. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first group of cells and / or (ii) receiving second information associated with adding and / or activating the first group of cells (and / or in the event of the above), the UE may activate one or more beams and / or one or more TCI states for one or more cells in the first group of cells, wherein the one or more beams and / or the one or more TCI states are the same as (and / or associated with) one or more beams of the first reference cell (e.g., one or more activated / working / current beams of the first reference cell) and / or one or more TCI states of the first reference cell (e.g., one or more activated / working / current TCI states of the first reference cell). The one or more beams of the first reference cell (e.g., the one or more activated / working / current beams of the first reference cell) and / or the one or more TCI states of the first reference cell (e.g., the one or more activated / working / current TCI states of the first reference cell) may be activated (and / / or may not be deactivated) before the UE receives the second information and / or before the mobility procedure is initiated. One or more cells in the first group of cells may be updated in parallel (e.g., simultaneously) with the first reference cell to obtain spatial relationships and / or TCI relationships with the MAC CE (e.g., the MAC CE may include TCI state activation of the MAC CE and / or spatial relationship information activation of the MAC CE). The first group of cells may be associated with the same first reference cell (e.g., indicated as being associated with the same first reference cell). Alternatively and / or additionally, cells in the first group of cells may be associated with multiple reference cells.

[0456] Figure 8The scenario 800 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communications with: (i) a reference cell having an activated beam, i.e., beam 1, i.e., reference cell 1 (e.g., an activated cell), and (ii) a reference cell having an activated beam, i.e., beam 2, i.e., reference cell 2 (e.g., an activated cell). At time t2, the UE receives first information 802 (e.g., an RRC message from the gNB) indicating cell configurations associated with a first group of cells (e.g., one or more cells in the first group) and a second group of cells (e.g., one or more cells in the second group). The first group of cells may include one or more candidate cells of PCell and / or SCell in an MCG or SCG. The first group of cells is indicated to be associated with reference cell 1 (e.g., for beam activation), and the second group of cells is indicated to be associated with reference cell 2 (e.g., for beam activation). For example, the first information 802 may indicate that the first group of cells is associated with reference cell 1 (e.g., for beam activation), and the second group of cells is associated with reference cell 2 (e.g., for beam activation). At time t3, the UE receives second information 804 indicating the addition and / or activation of the first group of cells. In response to second information 804, the UE adds and / or activates one or more cells in the first group (e.g., the one or more cells may include one, some, and / or all of the cells in the first group). The UE activates one or more beams for the first group of cells based on the activated beam of reference cell 1 (e.g., beam 1) (e.g., at time t4) (e.g., the one or more beams may be activated in response to second information 804). In an example, the one or more beams may include beam 1 of reference cell 1. At time t4 (after receiving second information 804 and / or after a mobility procedure initiated by second information 804), the UE performs communication with the first group of cells via beam 1. Reference cell 1 and reference cell 2 may be the UE's current and / or existing cells (regarding second information 804 and / or regarding the addition and / or activation of the first group of cells). In the example, when the UE receives the second information 804 and / or adds and / or activates the first group of cells, reference cell 1 and reference cell 2 can be the UE's current and / or existing cells.

[0457] Example 15

[0458] In Example 15, the UE may release one or more reference cells (for example, the one or more reference cells may be released after one or more target cells are activated, such as one or more cells in a first group of cells).

[0459] In some instances, the UE may remove / release / revoke the activation of one or more reference cells in response to adding and / or activating a first group of cells (and / or during the addition and / or activation). After the mobility procedure and / or during the addition and / or activation of the first group of cells, the second information may not instruct (e.g., may not issue a command to the UE) to activate the reference cells.

[0460] Alternatively and / or additionally, the UE may not respond to adding and / or activating the first group of cells and / or may not remove / release / revoke activation of the one or more reference cells during the addition and / or activation.

[0461] Alternatively and / or additionally, the first information may indicate an update list (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2) for one group of cells in the one or more groups of cells. The update list may include one, some, and / or all of the cells in the group. Alternatively and / or additionally, the update list may be indicated via parameters and / or bit values ​​indicating which update list the group of cells belongs to. In response to receiving second information associated with adding and / or activating the group of cells (e.g., indicating the addition and / or activation), the UE may activate one or more beam / TCI states for one, some, and / or all of the cells in the group. In this disclosure, the term "beam / TCI state" may correspond to beam and / or TCI state. The one or more beam / TCI states may include one or more activated / working / current beams of one or more current cells associated with an update list. For example, the first information may indicate a first update list for a first group of cells (e.g., via parameters and / or flags). In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first group of cells and / or (ii) receiving second information associated with adding and / or activating the first group of cells (and / or when the above occurs), the UE may activate one or more beam / TCI states for one, some, and / or all of the cells in the first group of cells. An update list may be associated with one, some, and / or all of the cells in the first group of cells. The one or more beam / TCI states may be one or more activated / working / current beam / TCI states of one or more second cells associated with the first update list. The one or more activated / working / current beam / TCI states of the one or more second cells may be activated (and may not be deactivated) before the UE receives the second information and / or before initiating the mobility procedure. The one or more second cells may be one or more current and / or existing cells of the UE. One, some, and / or all of the cells in the first group of cells can be updated in parallel (e.g., simultaneously) with the cells associated with the update list to obtain spatial relationships and / or TCI relationships with MAC CEs (e.g., TCI state-activated MAC CEs and / or spatial relationship information-activated MAC CEs).

[0462] Example 16

[0463] In Example 16, the UE can activate one or more beams using a cell that has not been released from the list after the target cell was added.

[0464] Figure 9The scenario 900 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communications with: (i) a reference cell having an activated beam, i.e., beam 1, i.e., reference cell 1 (e.g., an activated cell), wherein reference cell 1 is associated with an update list, i.e., list 1 (e.g., configured to use list 1), and (ii) a reference cell having an activated beam, i.e., beam 2, i.e., reference cell 2 (e.g., an activated cell), wherein reference cell 2 is associated with an update list, i.e., list 2 (e.g., configured to use list 2). At time t2, the UE receives first information 902 (e.g., an RRC message from the gNB) indicating cell configurations associated with a first group of cells (e.g., one or more cells in the first group) and a second group of cells (e.g., one or more cells in the second group). The first group of cells may include one or more candidate cells of PCell and / or SCell in an MCG or SCG. The first group of cells is indicated to be associated with list 1 (e.g., for beam activation), and the second group of cells is indicated to be associated with list 2 (e.g., for beam activation). For example, first information 902 may indicate that a first group of cells is associated with list 1 (e.g., for beam activation), and a second group of cells is associated with list 2 (e.g., for beam activation). At time t3, the UE receives second information 904 indicating the addition and / or activation of the first group of cells. In response to second information 904, the UE adds and / or activates one or more cells in the first group (e.g., the one or more cells may include one, some, and / or all of the cells in the first group). The UE activates one or more beams for the first group of cells based on the activated beams (e.g., beam 1 of reference cell 1) of the current cell associated with list 1 (e.g., reference cell 1) (e.g., at time t4) (e.g., the one or more beams may be activated in response to second information 904). In an example, the one or more beams may include beam 1 of reference cell 1. At time t4 (after receiving second information 904 and / or after a mobility procedure initiated by second information 904), the UE performs communication with the first group of cells via beam 1. In response to receiving the second message 904 (and / or after receiving it), the UE may deactivate and / or release reference cell 1. Alternatively and / or additionally, in response to receiving the second message 904 (and / or after receiving it), the UE may keep reference cell 1 active. In response to receiving the second message 904 (and / or after receiving it), the UE may consider the first group of cells to be in list 1 and / or the UE may be instructed (e.g., notified) that the first group of cells is in list 1.

[0465] Example 17

[0466] In Example 17, UL and DL may have different update lists.

[0467] In some instances, the first information may indicate a first update list (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2) for a first group of cells, indicating DL beam activation for one or more cells in the first group. The first information may also indicate a second update list (e.g., simultaneousSpatial-UpdatedList1 or simultaneousSpatial-UpdatedList2) for the first group of cells, indicating UL beam activation. The first and second update lists may be indicated via different indices / identities (e.g., in the first information).

[0468] Example 18

[0469] In Embodiment 18, the UE can deactivate the current beam used for the current CG / cell. In this disclosure, the term "CG / cell" may correspond to a CG and / or a cell. Alternatively and / or additionally, the UE may update the same beam for the current CG / cell that shares the same update list with added cells.

[0470] In some instances, the UE may revoke the activated beam / TCI state of the first cell in response to receiving the second information and / or initiating or completing a mobility procedure to add and / or activate the second cell. The first cell may be the same cell as the second cell. The first cell may be a different cell from the second cell. In some instances, the first cell may not be indicated in the second information. Alternatively and / or additionally, the UE may revoke the activation of the first cell in response to receiving the second information and / or initiating or completing a mobility procedure to add and / or activate the second cell. Alternatively and / or additionally, the UE may activate a new beam / TCI state (e.g., different from the current beam / TCI state) for the first cell in response to receiving the second information and / or initiating or completing a mobility procedure to add and / or activate the second cell. In some instances, the new beam may be associated with the second cell (e.g., as a supplement to the one associated with the first cell). The first and second cells may be associated with the same TCI state update list (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2).

[0471] The first cell can be a PCell or SCell (e.g., a current and / or existing SCell). The UE may activate the first cell before receiving the first information, before receiving the second information, and / or before initiating a mobility procedure to add and / or activate the second cell. The UE may switch one or more beams of the first cell in response to receiving the second information. Alternatively and / or additionally, the second information may indicate one or more beams to which the first cell is switched (e.g., the UE may switch from communicating with the first cell using one or more previous beams to communicating with the first cell using the one or more beams indicated by the second information). Alternatively and / or additionally, the second information may indicate a third cell, wherein the UE may switch one or more activated beams of the first cell to the same beams as the activated beams of the third cell (e.g., the UE may switch to communicating with the first cell using the activated beams of the third cell based on the indication of the third cell in the second information).

[0472] Example 19

[0473] In Example 19, the first information does not indicate the beam used for the group or groups of cells.

[0474] In some instances, the first information may not indicate one or more beam / TCI states for the group or multiple cell sets (which will be activated upon receiving the second information and / or upon initiating and / or completing the mobility procedure for adding and / or activating the group of cells). The first information may include cell indexes / identities for the group or multiple cell sets. The second information may indicate one or more beam / TCI states for at least a first group of cells in the group or multiple cell sets. The second information may instruct the UE (e.g., issue a command to the UE) to activate and / or add the first group of cells. The second information may indicate one or more indexes / identities for the first group of cells.

[0475] For example, the second information may indicate one or more beams (e.g., beams, SSBs, and / or CSI-RS) and / or one or more TCI states associated with the first group of cells. In response to receiving the second information associated with adding and / or activating the first group of cells, the UE may activate and / or add the one or more beams for the first group of cells. Alternatively and / or additionally, in response to initiating or completing a mobility procedure to add and / or activate cells in the first group of cells, the UE may activate and / or add the one or more beams for the first group of cells. The UE may activate and / or use the one or more beams (and / or the one or more TCI states) for one or more cells in the first group of cells. When adding and / or activating the first group of cells (e.g., adding and / or activating the first group of cells in response to receiving the second information), the UE may not activate one or more beams associated with the first group of cells that are not indicated in the second information (e.g., the UE may not activate one or more beams indicated in the first information but not in the second information).

[0476] Alternatively and / or additionally, the second information may indicate a reference cell for the first group of cells (e.g., via a serving cell index). The first information may not indicate one or more reference cells for the first group of cells. In response to receiving the second information, the UE may activate and / or add one or more cells in the first group of cells. Alternatively and / or additionally, in response to initiating or completing a mobility procedure associated with adding and / or activating cells in the first group of cells, the UE may activate and / or use one or more beam / TCI states of the same group that have been activated and / or used for reference cells for the one or more cells in the first group of cells. The reference cell may be a UE SCell (e.g., current and / or existing SCell) or PCell (e.g., current and / or existing PCell).

[0477] Figure 10The scenario 1000 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communications with: (i) a reference cell having an activated beam, i.e., beam 1, i.e., reference cell 1 (e.g., an activated cell), and (ii) a reference cell having an activated beam, i.e., beam 2, i.e., reference cell 2 (e.g., an activated cell). At time t2, the UE receives first information 1002 (e.g., an RRC message from the gNB) indicating cell configurations associated with a first group of cells (e.g., one or more cells in the first group) and a second group of cells (e.g., one or more cells in the second group). The first group of cells may include one or more candidate cells of PCell and / or SCell in an MCG or SCG. At time t3, the UE receives second information 1004 indicating the addition and / or activation of the first group of cells. The first group of cells is indicated in the second information 1004 as associated with reference cell 1 (e.g., for beam activation). For example, the second information 1004 may indicate that the first group of cells is associated with reference cell 1 (e.g., for beam activation). In response to the second information 1004, the UE adds and / or activates one or more cells in the first group of cells (e.g., the one or more cells may include one, some, and / or all of the cells in the first group of cells). The UE activates one or more beams for the first group of cells based on the activated beam of reference cell 1 (e.g., beam 1) (e.g., at timing t4) (e.g., the one or more beams may be activated in response to the second information 1004). In an example, the one or more beams may include beam 1 of reference cell 1. At timing t4 (after receiving the second information 1004 and / or after a mobility procedure initiated by the second information 1004), the UE performs communication with the first group of cells via beam 1. In response to receiving the second information 1004 (and / or after receiving it), the UE may deactivate and / or release reference cell 1. Alternatively and / or additionally, in response to receiving the second information 1004 (and / or after receiving it), the UE may keep reference cell 1 active. Reference cell 1 and reference cell 2 can be the UE's current and / or existing cells (regarding the second information 1004 and / or regarding adding and / or activating the first group of cells). In the example, when the UE receives the second information 1004 and / or adds and / or activates the first group of cells, reference cell 1 and reference cell 2 can be the UE's current and / or existing cells.

[0478] Alternatively and / or additionally, the second information may indicate an update list associated with the first group of cells (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2) (e.g., the update list may be indicated via bit fields or flags). The first information may not indicate one or more update lists for the first group of cells. The update list (indicated by the second information) may indicate (e.g., may include) one, some, and / or all of the cells in the first group of cells. The update list may be indicated in the second information via bit fields and / or flags. In response to receiving the second information and / or in response to initiating or completing a mobility procedure to add and / or activate cells in the first group of cells, the UE may activate and / or use one or more beam / TCI states for one, some, and / or all of the cells in the first group of cells. The one or more beam / TCI states may be the same as and / or associated with one or more beam / TCI states activated and / or used for one or more cells (e.g., current and / or existing cells) associated with the update before receiving the second information and / or initiating the mobility procedure. Before receiving the second information and / or before initiating the mobility procedure, the one or more cells (e.g., current and / or existing cells) may be in the update list (e.g., included in the update list). After receiving the second information and / or after the mobility procedure, the one or more cells (e.g., current and / or existing cells) may be in the update list (e.g., included in the update list). Alternatively and / or additionally, after receiving the second information and / or after the mobility procedure, the one or more cells (e.g., current and / or existing cells) may be removed / released / deactivated from the update list. In response to receiving the second information, cells in the first group of cells may be included in the update list (and / or configured therein).

[0479] Figure 11The scenario 1100 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communications with: (i) a reference cell having an activated beam, i.e., beam 1, i.e., reference cell 1 (e.g., an activated cell), wherein reference cell 1 is associated with an update list, i.e., list 1 (e.g., configured to use list 1), and (ii) a reference cell having an activated beam, i.e., beam 2, i.e., reference cell 2 (e.g., an activated cell), wherein reference cell 2 is associated with an update list, i.e., list 2 (e.g., configured to use list 2). At time t2, the UE receives first information 1102 (e.g., an RRC message from the gNB) indicating cell configurations associated with a first group of cells (e.g., one or more cells in the first group) and a second group of cells (e.g., one or more cells in the second group). The first group of cells may include one or more candidate cells of PCell and / or SCell in an MCG or SCG. At time t3, the UE receives second information 1104 indicating the addition and / or activation of the first group of cells. The first group of cells is indicated in the second information 1104 as associated with list 1 (e.g., for beam activation). For example, the second information 1104 may indicate that the first group of cells is associated with reference cell 1 (e.g., for beam activation). In response to the second information 1104, the UE adds and / or activates one or more cells in the first group of cells (e.g., the one or more cells may include one, some, and / or all of the cells in the first group). The UE activates one or more beams for the first group of cells based on the activated beams (e.g., beam 1 of reference cell 1) of the current cell associated with list 1 (e.g., reference cell 1) (e.g., at timing t4) (e.g., beam 1 of reference cell 1) (e.g., the one or more beams may be activated in response to the second information 1104). In an example, the one or more beams may include beam 1 of reference cell 1. At timing t4 (after receiving the second information 1104 and / or after a mobility procedure initiated by the second information 1104), the UE performs communication with the first group of cells via beam 1. In response to receiving the second message 1104 (and / or after receiving it), the UE may revoke activation and / or release reference cell 1. Alternatively and / or additionally, in response to receiving the second message 1104 (and / or after receiving it), the UE may keep reference cell 1 active. In response to receiving the second message 1104 (and / or after receiving it), the UE may consider the first group of cells to be in list 1 and / or may be instructed (e.g., notified) that the first group of cells is in list 1.

[0480] Example 20

[0481] In Example 20, UL and DL may have different update lists.

[0482] In some instances, the second information may indicate a first update list (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2) for the first group of cells, indicating DL beam activation for one or more cells in the first group. The second information may also indicate a second update list (e.g., simultaneousSpatial-UpdatedList1 or simultaneousSpatial-UpdatedList2) for the first group of cells, indicating UL beam activation (e.g., for one or more cells in the first group). The first and second update lists may be indicated via different indices / identities (e.g., in the second information).

[0483] Example 21

[0484] In Example 21, the beam of the current cell can be changed and / or reused based on the indication in the second information.

[0485] In some instances, the second information may indicate whether the UE should activate a new beam for a cell (e.g., the current and / or existing cell) (and, for example, deactivate the current beam) in response to receiving the second information. The current and / or existing cell may be the UE's SCell or PCell.

[0486] The UE may determine whether to reuse the current beam used for the current and / or existing cells based on the second information. For example, if the second information does not indicate (e.g., may include) the current cell (e.g., PCell or SCell), then the UE may reuse one or more current beams used for the current cell. Alternatively or additionally, if the second information indicates the current cell (e.g., via cell index / identity) (and / or when the second information indicates the current cell), the UE may change said one or more current beams to one or more new beams used for the current cell (and / or activate new beams for the current cell). The second information may indicate a reference cell and / or an updated list associated with the current cell. For example, the second information may indicate the current cell by indicating a reference cell and / or an updated list associated with the current cell. The second information may indicate one or more beams associated with the current cell (e.g., one or more new beams). Alternatively and / or additionally, if the second information does not indicate the current cell (and / or when the second information does not indicate the current cell), the UE may remove / release / deactivate the current cell.

[0487] Example 22

[0488] In Example 22, if beam information is not provided to the UE, the UE may use one or more beams of the current PCell and / or the current PSCell for one or more added SCells (e.g., one or more SCells added and / or activated by the UE in response to the second information).

[0489] In some instances, the second information (e.g., associated with adding and / or activating a group of cells) may not provide beaming information for said group of cells (e.g., when adding and / or activating said group of cells). In response to receiving the second information associated with adding and / or activating the first group of cells (and / or upon receipt), wherein the second information does not indicate beaming information associated with the first group of cells, the UE may activate and / or use one or more beams (e.g., one or more UL and / or DL ​​beams) on the first group of cells associated with the UE's PCell (e.g., current PCell) and / or PSCell (e.g., current PSCell).

[0490] Beam information may include one or more TCI status identities.

[0491] Beam information may include spatial relationship information.

[0492] Beam information may include reference signal indexes (e.g., SSB and / or CSI-RS).

[0493] Beam information may include the cell index of the reference cell.

[0494] Beam information may include instructions to update the list.

[0495] Example 23

[0496] In Example 23, the first information may indicate information for each cell.

[0497] In some instances, the first information may indicate one or more cells (e.g., for SCell changes or for PCell changes). The first information may indicate the serving cell configuration associated with one or more cells (e.g., ServingCellConfig). The one or more cells may include one or more serving cells of the UE. The one or more cells may include one or more non-serving cells of the UE and / or one or more neighboring cells of the UE.

[0498] The first information may provide (e.g., indicate) one or more indices / identities associated with the one or more cells. Each of the one or more cells may be associated with one of the one or more indices / identities provided (e.g., indicated) in the first information. The second information may indicate one or more indicated cells among the one or more cells. For example, the second information may indicate one or more first indices / identities associated with the one or more indicated cells (e.g., from the one or more indices / identities provided by the first information). In response to receiving the second information (and / or upon receipt) and / or in response to initiating or completing a mobility procedure to add and / or activate the one or more indicated cells, the UE may regard the one or more indicated cells as one or more serving cells (e.g., one or more activated serving cells). The mobility procedure may be initiated in response to the second information.

[0499] Example 24

[0500] In embodiment 24, the first information may indicate beam information for one or more cells. The second information may indicate a subset of beams indicated by the first information.

[0501] The first information may indicate one or more cells and / or a beam associated with said one or more cells. The beam indicated by the first information may include one or more beams for each of said one or more cells. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating said one or more cells and / or (ii) receiving second information associated with adding and / or activating said one or more cells (and / or when the above occurs), the UE may activate a beam (and / or reference signal) associated with the indicated spatial relationship information ID for UL transmission (e.g., PUCCH and / or PUSCH transmission) on said set of said one or more cells. The indicated spatial relationship information ID may correspond to the spatial relationship information ID indicated by the first information. In some instances, the second information may not indicate one or more beams / TCI states for said one or more cells. The first information and / or the second information may indicate a CG associated with each of said one or more cells. In response to adding and / or activating the one or more cells (in response to (i) receiving the second information and / or (ii) initiating or completing a mobility procedure to add and / or activate the one or more cells and / or when the above occurs), the UE may activate the one or more beams for the one or more cells (and / or be indicated to have the one or more beams). Alternatively and / or additionally, the first information may indicate and / or configure one or more additional beams in addition to the one or more beams associated with the one or more cells, wherein the UE does not activate the one or more additional beams when adding and / or activating the one or more cells (e.g., in response to the second information and / or mobility procedure).

[0502] For example, the first information may indicate one or more cells, and may indicate one or more beam / TCI states for said one or more cells (e.g., one or more beam / TCI states may be indicated for each of said one or more cells indicated by the first information). In response to (i) receiving second information (e.g., indicating the addition and / or activation of a first cell among said one or more cells indicated by the first information) and / or (ii) initiating or completing a mobility procedure to add and / or activate the first cell (and / or in the event of the above), the UE may activate and / or use one or more first beam / TCI states associated with the first cell (e.g., the first cell indicated in the first information). The second information may not indicate one or more beam / TCI states for the first cell (e.g., the second information may not indicate said one or more first beam / TCI states).

[0503] Alternatively and / or additionally, the UE may receive second information indicating the addition and / or activation of the first and second cells. The UE may activate and / or use one or more first beam / TCI states associated with the first cell, and activate and / or use one or more second beam / TCI states associated with the second cell.

[0504] Alternatively and / or additionally, the second information may indicate a subset of beam / TCI states for each of the one or more first cells. The second information may indicate the addition and / or activation of the one or more first cells. The one or more cells indicated by the first information may include the one or more first cells. The subset of beam / TCI states may include the subset of beam / TCI states indicated in the first information for each of the one or more first cells. In response to receiving the second information and / or in response to initiating or completing a mobility procedure to add and / or activate the one or more first cells, the UE may activate and / or use the subset of beam / TCI states for each of the one or more first cells. The second information may indicate one or more indices / identities associated with the one or more first cells. The UE may not activate and / or use one or more beam / TCI states indicated in the first information that are not associated with cells not indicated in the second information (e.g., the UE may not add and / or activate cells in response to the second information and / or may not activate and / or use the one or more beam / TCI states in response to adding and / or activating cells in response to the second information). In some instances, the UE may not activate and / or use one or more beam / TCI states indicated in the first information for the cell before receiving the second information. The UE may determine, based on a subset of beam / TCI states for the cell (e.g., the second information may indicate a subset of beam / TCI states and / or the cell itself), which one or more beam / TCI states are activated and / or used (and / or activated and / or used when adding and / or activating the cell) for adding and / or activating the cell. (For example, the UE may determine which beam / TCI states are activated and / or used for the cell based on the subset of beam / TCI states for the cell indicated by the second information.)

[0505] Alternatively and / or additionally, the beam / TCI state associated with a cell (e.g., indicated in the first and / or second information) may be associated with different TRPs of the cell. For example, the first information may indicate a first beam for a first TRP of a first cell among the one or more cells and a second beam for a second TRP of the first cell. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating a first cell (and / or one or more other cells and / or CG) and / or (ii) receiving second information associated with adding and / or activating a first cell (and / or one or more other cells and / or CG) (and / or when the above occurs), the UE may activate and / or use the first beam on the first TRP of the first cell and activate and / or use the second beam on the second TRP of the first cell. The first and second beams may be indicated by the second information. The association between the cell's beam and TRP may be indicated in the first and / or second information.

[0506] Example 25

[0507] In Example 25, the first information indicates the reference cell.

[0508] In some instances, the first information may indicate one or more cells and / or one or more reference cells associated with said one or more cells. The one or more reference cells indicated by the first information may include a reference cell for each of said one or more cells. A reference cell may be the UE's serving cell (e.g., SCell or PCell). A reference cell may be the UE's SCell (e.g., current and / or existing SCell) or PCell (e.g., current and / or existing PCell). A reference cell may be a non-serving cell (e.g., a cell with a PCI different from any serving cell of the UE). For example, the first information may indicate a first reference cell for a first cell among said one or more cells. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first cell and / or (ii) receiving second information associated with adding and / or activating the first cell (and / or when the above occurs), the UE may activate one or more beam / TCI states for the first cell, wherein said one or more beam / TCI states are the same as and / or associated with one or more activated beam / TCI states of the first reference cell. The first cell can be updated in parallel (e.g., simultaneously) with the first reference cell to obtain spatial relationships and / or TCI relationships with MAC CEs (e.g., TCI state-activated MAC CEs and / or spatial relationship information-activated MAC CEs). In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the one or more cells and / or (ii) receiving second information associated with adding and / or activating the one or more cells (and / or when the above occurs), the UE can activate one or more beam / TCI states for one, some, and / or all of the one or more cells, wherein the one or more beam / TCI states are the same as (and / or associated with) one or more beam / TCI states of the reference cell (e.g., one or more activated / working / current beam / TCI states of the reference cell).

[0509] Alternatively and / or additionally, the first information may indicate a second reference cell for the second cell in the one or more cells. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first and second cells and / or (ii) receiving second information associated with adding and / or activating the first and second cells (and / or in the event of the above), the UE may: (A) activate one or more first beam / TCI states for the first cell, wherein the one or more first beam / TCI states are the same as and / or associated with one or more activated beam / TCI states of the first reference cell, and / or (B) activate one or more second beam / TCI states for the second cell, wherein the one or more second beam / TCI states are the same as and / or associated with one or more activated beam / TCI states of the second reference cell. The first cell may be updated in parallel (e.g., simultaneously) with the first reference cell to obtain spatial relationships and / or TCI relationships with MAC CEs (e.g., TCI state activates MAC CE and / or spatial relationship information activates MAC CE). The second cell can be updated in parallel (e.g., simultaneously) with the second reference cell to obtain spatial relationships and / or TCI relationships with the MAC CE (e.g., TCI state-activated MAC CE and / or spatial relationship information-activated MAC CE).

[0510] Example 26

[0511] In Example 26, the first information indicates an updated list.

[0512] In some instances, the first information may indicate an update list (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2) for one or more cells, such as the one or more cells indicated by the first information (e.g., the update list may be included in the RRC parameters). The first information may indicate one or more update lists including the update list (e.g., simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2) for each of the one or more cells.

[0513] For example, the first information may indicate a first update list for a first cell among the one or more cells. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first cell and / or (ii) receiving second information associated with adding and / or activating the first cell (and / or when the above occurs), the UE may activate one or more beam / TCI states for the first cell, wherein the one or more beam / TCI states are the same as and / or associated with one or more activated / working beam / TCI states of the one or more cells associated with the first update list. The first cell may be updated in parallel (e.g., simultaneously) with the one or more cells associated with the first update list to obtain spatial relationships and / or TCI relationships with MAC CEs (e.g., TCI state activating MAC CE and / or spatial relationship information activating MAC CE).

[0514] Alternatively and / or additionally, the first information may indicate a second update list for the second cell (e.g., the second cell in one or more cells indicated by the first information). In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first and second cells and / or (ii) receiving the second information associated with adding and / or activating the first and second cells (and / or when the above occurs), the UE may: (A) activate one or more first beam / TCI states for the first cell, wherein the one or more first beam / TCI states are the same as and / or associated with one or more activated / working beam / TCI states of one or more cells associated with the first update list, and / or (B) activate one or more second beam / TCI states for the second cell, wherein the one or more second beam / TCI states are the same as and / or associated with one or more activated / working beam / TCI states of one or more cells associated with the second update list. The first cell can be updated in parallel (e.g., simultaneously) with one or more cells associated with the first update list to obtain spatial relationships and / or TCI relationships with MAC CEs (e.g., TCI state-activated MAC CEs and / or spatial relationship information-activated MAC CEs). The second cell can be updated in parallel (e.g., simultaneously) with one or more cells associated with the second update list to obtain spatial relationships and / or TCI relationships with MAC CEs (e.g., TCI state-activated MAC CEs and / or spatial relationship information-activated MAC CEs).

[0515] Example 27

[0516] In Example 27, the first information does not indicate the beam, and / or the second information indicates the beam information for each cell.

[0517] In some instances, the first information may not indicate (e.g., may not include) one or more beam / TCI states associated with one or more cells (e.g., one or more cells indicated by the first information) (e.g., any beam / TCI state). In instances, the first information may not indicate (e.g., may not include) one or more beam / TCI states activated in response to the activation of said one or more cells (and / or upon activation of said one or more cells) (e.g., said one or more cells may be activated in response to receiving second information and / or upon receiving second information).

[0518] The second information may indicate (e.g., may include) one or more beams associated with at least one of the one or more cells. The second information may include one or more SSB indices, one or more CSI-RS resource identities, one or more TCI status identities, one or more spatial relationship information IDs, and / or one or more reference signal indices (and / or the one or more beams may be indicated via these items). The UE may activate and / or add the at least one cell in response to (i) receiving the second information and / or (ii) initiating a mobility procedure to add and / or activate the at least one cell (and / or, if the above occurs). The mobility procedure may be triggered and / or initiated by the second information. The second information may instruct the UE (e.g., issue a command to the UE) to activate and / or add the at least one cell. The second information may indicate the serving cell index and / or cell identity (e.g., PCI) associated with the at least one cell. The UE may not activate or add cells among the one or more cells not indicated in the second information (e.g., cells indicated by the first information). In response to adding and / or activating the at least one cell, the UE may activate and / or use the one or more beams associated with the at least one cell (indicated in the second information). In some instances, the one or more beams may be associated with different TRPs (e.g., each of the one or more beams is associated with one of the different TRPs). The UE may activate different beams of the one or more beams in response to receiving second information to listen to different TRPs in the at least one cell.

[0519] Example 28

[0520] In Example 28, the second information indicates the reference cell.

[0521] In some instances, the second information may indicate a reference cell for the at least one cell (e.g., the second information may indicate a reference cell for each of the at least one cells). The reference cell (indicated by the second information for the at least one cell) may be a UE's SCell or PCell (e.g., the UE's current and / or existing SCell or PCell). The first information may not indicate a reference cell for each of the one or more cells that may include the at least one cell (e.g., the cell indicated by the first information). The reference cell (indicated by the second information for the at least one cell) may be the UE's serving cell (e.g., SCell or PCell). The reference cell may be a non-serving cell (e.g., a cell with a PCI different from any serving cell of the UE). In an instance, the second information may indicate a first reference cell for a first cell of the at least one cell (e.g., via cell index / identity). In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the at least one cell and / or (ii) receiving second information associated with adding and / or activating the at least one cell (and / or when the above occurs), the UE may activate one or more beam / TCI states for a first cell, wherein the one or more beam / TCI states are the same as and / or associated with one or more activated beam / TCI states of a reference cell. The first cell may be updated in parallel (e.g., simultaneously) with the reference cell to obtain spatial relationships and / or TCI relationships with MAC CE (e.g., TCI state activates MAC CE and / or spatial relationship information activates MAC CE).

[0522] Alternatively and / or additionally, the second information may indicate a second reference cell for the second cell in the at least one cell. In response to (i) initiating or completing a mobility procedure associated with adding and / or activating at least the first and second cells and / or (ii) receiving second information associated with adding and / or activating the first and second cells (and / or one or more other cells) (and / or when the above occurs), the UE may: (A) activate one or more first beam / TCI states for the first cell, wherein the one or more first beam / TCI states are the same as and / or associated with one or more activated beam / TCI states of the first reference cell, and / or (B) activate one or more second beam / TCI states for the second cell, wherein the one or more second beam / TCI states are the same as and / or associated with one or more activated beam / TCI states of the second reference cell. The first cell may be updated in parallel (e.g., simultaneously) with the reference cell to obtain spatial relationships and / or TCI relationships with the MAC CE (e.g., TCI state activates MAC CE and / or spatial relationship information activates MAC CE). The second cell can be updated in parallel (e.g., simultaneously) with the second reference cell to obtain spatial relationships and / or TCI relationships with the MAC CE (e.g., TCI state-activated MAC CE and / or spatial relationship information-activated MAC CE).

[0523] Alternatively and / or additionally, the UE may remove / release / revoke the activated reference cell in response to (i) the second information and / or (ii) the addition and / or activation of the at least one cell. Alternatively, the UE may not remove / release / revoke the activated reference cell in response to (i) the second information and / or (ii) the addition and / or activation of the at least one cell (e.g., the UE may keep the reference cell active).

[0524] Example 29

[0525] In Example 29, UL and DL may have different reference cells.

[0526] In some instances, the first and / or second information may indicate a first DL reference cell for a first cell and / or a first group of cells, wherein the first DL reference cell may indicate DL beam activation for the first cell and / or the first group of cells (e.g., the same as activating a DL beam as the first DL reference cell). For example, the first DL reference cell may be associated with one or more DL beams, wherein the indication of the first DL reference cell in the second information may correspond to: (i) an indication that the one or more DL beams are associated with the first cell and / or the first group of cells, and / or (ii) an indication (e.g., an instruction) for the UE to activate the one or more DL beams for the first cell (e.g., a command) (e.g., the UE may use the one or more DL beams to communicate with the first cell and / or the first group of cells). The second information may indicate a first UL reference cell for the first cell and / or the first group of cells, wherein the first UL reference cell may indicate UL beam activation (e.g., the same as activating a UL beam as the first UL reference cell). For example, a first UL reference cell may be associated with one or more UL beams, wherein the indication of the first UL reference cell in the second information may correspond to: (i) an indication that the one or more UL beams are associated with a first cell and / or a first group of cells, and / or (ii) an indication (e.g., an instruction) that the UE activates the one or more UL beams for the first cell and / or the first group of cells (e.g., the UE may use the one or more UL beams to communicate with the first cell). The first DL reference cell and the first UL reference cell may be indicated via different indices / identities. The first DL reference cell and the first UL reference cell may be the same or different cells.

[0527] In some instances, the UE may remove / release / revoke the activation of one or more current and / or existing cells (which may include a first DL reference cell and / or a first UL reference cell) in response to (i) second information and / or (ii) adding and / or activating the at least one cell (which may include a first cell). Alternatively and / or additionally, the UE may not remove / release / revoke the activation of the one or more current and / or existing cells in response to (i) second information and / or (ii) adding and / or activating the at least one cell (e.g., the UE may keep the one or more current and / or existing cells active). Alternatively and / or additionally, the UE may select the one or more current and / or existing cells associated with an update list after adding and / or activating the at least one cell and / or in response to the addition and / or activation, based on whether the one or more current or existing cells are active.

[0528] Example 30

[0529] In Example 30, if no beam and / or beam information associated with one or more added SCells is provided, then the one or more added SCells may use the beam associated with the current PCell.

[0530] In some instances, the second information may not provide beaming information for the cell (e.g., when adding and / or activating the cell). In some instances, the second information is associated with adding and / or activating the cell. In response to receiving second information associated with adding and / or activating the first cell (and / or upon receipt), wherein the second information does not indicate beaming information associated with the first cell, the UE may activate and / or use one or more beams (e.g., one or more UL and / or DL ​​beams) on the first cell associated with the UE's PCell (e.g., current PCell) and / or PSCell (e.g., current PSCell).

[0531] Beam information may include one or more TCI status identities.

[0532] Beam information may include spatial relationship information.

[0533] Beam information may include reference signal indexes (e.g., SSB and / or CSI-RS).

[0534] Beam information may include the cell index of the reference cell.

[0535] Beam information may include instructions to update the list.

[0536] Example 31

[0537] In embodiment 31, each of one or more beams (e.g., indicated by first information and / or second information) may be associated with one or more cells and / or CGs. In some instances, each of the one or more beams may be associated with one or more cells and / or CGs. In some instances, the association of the one or more cells and / or CGs with the same beam in the one or more beams may mean that the one or more cells and / or CGs are in the same update list (e.g., simultaneousTCI-UpdateList1, simultaneousTCI-UpdateList2, simultaneousSpatial-UpdatedList1, and / or simultaneousSpatial-UpdatedList2). Alternatively and / or additionally, the association of the one or more cells and / or CGs with the same beam in the one or more beams may mean that the UE is configured to use the same beam for the one or more cells and / or CGs. In some instances, one or more cells and / or CGs (e.g., a group or more groups of cells) may be indicated and / or configured via first information. Alternatively and / or additionally, CGs are associated with beams in the one or more beams. For example, the UE may be configured to use beams for one, some, and / or all of the cells configured in the CG. Alternatively and / or additionally, the UE may be configured to use beams for a first subset of cells configured in the CG but not for a second subset of cells configured in the CG. For example, the one or more beams may be associated with different cells (and / or each of the one or more beams may be associated with different cells or different groups of cells among the different cells). For each of the one or more beams, the UE may determine one or more cells associated with the beam. Each of the one or more cells and / or the CG may be associated with a group of one or more beams that includes one, some, and / or all of the one or more beams. The one or more beams may be indicated and / or configured via first information. For example, the first information may indicate the serving cell configuration of the one or more cells and / or the CG. The first information may indicate (e.g., include) beams (and / or one or more other beams) associated with a set of cells (e.g., a group of one or more cells) and / or the PCell in the CG.

[0538] In this example, the first information may indicate the association between the one or more beams and the one or more cells and / or CGs. Alternatively and / or additionally, the association between the one or more beams and the one or more cells may be indicated via a network message (e.g., an RRC reconfiguration message) that is different from the first information and / or the second information (e.g., the network message may include an RRC message received prior to the first information). Alternatively and / or additionally, the association may be predefined in the UE and / or derived by the UE.

[0539] Example 32

[0540] In embodiment 32, a group of cells may be associated with a beam in the first information (e.g., a beam indicated by the first information).

[0541] In some instances, each of the group or groups of cells (e.g., indicated by first information and / or second information) may be associated with a beam (e.g., the same beam) in one or more beams.

[0542] Each of the one or more groups may be associated with an index / identity (e.g., an index / identity may be assigned). The index / identity may be provided in the first information (e.g., an indication).

[0543] In some instances, the second information may not indicate one or more indices / identities associated with the group or groups of cells (e.g., the second information may not indicate any indexes / identities associated with the group or groups of cells). In some instances, the second information may not indicate one or more indices / identities (e.g., PCI and / or serving cell indexes) of one or more cells in the group or groups of cells (e.g., the second information may not indicate any indexes / identities associated with any cell in the group or groups of cells).

[0544] In some instances, the second information may indicate a beam group (e.g., a group of one or more beams). The beam group may include one, some, and / or all of the one or more beams. The beam group may be associated with a group of cells within the group or multiple cell groups. One, some, and / or all of the beams in the beam group may be associated with (e.g., within the same group or multiple cell groups). Alternatively and / or additionally, each beam in the beam group may be associated with a group of cells within the group or multiple cell groups. Different beams in the beam group may be associated with (e.g., within the group or multiple cell groups) different groups of cells. The group or multiple cell groups may correspond to one or more first groups of cells.

[0545] For example, the second information may indicate (e.g., include) one or more indices / identities associated with one or more beams in the beam group (e.g., the one or more indices / identities may include SSB indexes, CSI-RS resource IDs, TCI status identities, and / or spatial relationship information identities).

[0546] In response to (i) receiving the second information and / or (ii) initiating or completing a mobility procedure (and / or in the event of the above), the UE may add and / or activate one or more groups of cells and / or CGs (e.g., as serving cells) based on one or more beams indicated in the second information (e.g., the beam group indicated by the second information). (E.g., the group of cells may be added and / or activated based on the association between the group of cells and the one or more beams). The second information may indicate the addition and / or activation of one or more groups of cells from the one or more first groups of cells. The mobility procedure may be initiated and / or executed to add and / or activate one or more groups of cells from the one or more first groups of cells (e.g., the group of cells may be indicated by the second information). The UE may activate or add one or more cells and / or CGs from one or more groups of cells associated with the beam group indicated in the second information. The UE may not activate or add one or more cells and / or CGs from one or more groups of cells not associated with the beam group.

[0547] In response to adding and / or activating the group of cells (e.g., after receiving the second information and / or after a mobility procedure), the UE may activate the beam group for the group of cells (e.g., on the group of cells) for DL ​​and / or UL communication with the group of cells.

[0548] Figure 12The scenario 1200 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communications with: (i) a cell having an activated beam, i.e., beam 1, i.e., current cell 1 (e.g., an activated cell), and (ii) a cell having an activated beam, i.e., beam 2, i.e., current cell 2 (e.g., an activated cell). At time t2, the UE receives first information 1202 (e.g., an RRC message) indicating: (i) a first group of cells having an associated beam, i.e., beam 1 (e.g., one or more cells in the first group), and (ii) a second group of cells having an associated beam, i.e., beam 2 (e.g., one or more cells in the second group). For example, the first information 1202 may indicate that the first group of cells is associated with beam 1 (associated with current cell 1) and / or the second group of cells is associated with beam 2 (associated with current cell 2). At time t3, the UE receives second information 1204 indicating beam 1. In some instances, the second information 1204 does not indicate the index / identity associated with the first group of cells, nor does it indicate the index / identity associated with the second group of cells. In some instances, the second information 1204 does not indicate the cell index / identity associated with a cell. In response to the second information 1204, the UE may add and / or activate the first group of cells as one or more serving cells (e.g., based on the association of the first group of cells with beam 1 and / or based on the indication of beam 1 in the second information 1204). The first group of cells may be added and / or activated after time t3 (in response to the second information 1204). The UE may activate beam 1 for the first group of cells (e.g., on the first group of cells) (e.g., after time t3). The UE may add and / or activate the first group of cells as one or more serving cells, and may activate beam 1 for the first group of cells (e.g., on the first group of cells) at different time intervals. In some instances, the UE may not deactivate the current cell 1 in response to the second information 1204. The second information 1204 may instruct the UE (e.g., issue an instruction to the UE) to activate and / or add one or more cells (e.g., a first group of cells) associated with beam 1 (e.g., the one or more cells may include one or more cells indicated via the first information 1202 and / or via one or more other RRC messages).

[0549] Figure 13The scenario 1300 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communications with: (i) a cell having an activated beam, i.e., beam 1, i.e., current cell 1 (e.g., an activated cell), and (ii) a cell having an activated beam, i.e., beam 2, i.e., current cell 2 (e.g., an activated cell). At time t2, the UE receives first information 1302 (e.g., an RRC message) indicating the following: (i) a first group of cells having an associated beam, i.e., beam 1 (e.g., one or more cells in the first group), (ii) a second group of cells having an associated beam, i.e., beam 2 (e.g., one or more cells in the second group), and (iii) a third group of cells having an associated beam, i.e., beam 3 (e.g., one or more cells in the third group). For example, the first information 1302 may indicate that the first group of cells is associated with beam 1 (associated with current cell 1), the second group of cells is associated with beam 2 (associated with current cell 2), and / or the third group of cells is associated with beam 3. At time t3, the UE receives second information 1304 indicating beam 1 and beam 2. In some instances, second information 1304 does not indicate the index / identity associated with the first group of cells, second information 1304 does not indicate the index / identity associated with the second group of cells, and second information 1304 does not indicate the index / identity associated with the third group of cells. In some instances, second information 1304 does not indicate the cell index / identity associated with a cell. In response to second information 1304, the UE may add and / or activate the first group of cells as one or more serving cells, and add and / or activate the second group of cells as one or more serving cells (e.g., based on the first group of cells being associated with beam 1, based on the second group of cells being associated with beam 2, and / or based on second information 1304 indicating beam 1 and beam 2). The first group of cells and / or the second group of cells may be added and / or activated after time t3 (in response to second information 1304). The UE may activate beam 1 for a first group of cells (e.g., on the first group of cells) and beam 2 for a second group of cells (e.g., on the second group of cells). In some instances, the UE may perform actions at different timings, wherein the actions include (i) adding and / or activating the first group of cells as one or more serving cells, (ii) adding and / or activating the second group of cells as one or more serving cells, (iii) activating beam 1 (e.g., for the first group of cells), and / or (iv) activating beam 2 (e.g., for the second group of cells). In some instances, the UE may perform one or more first actions at one or more first timings and perform one or more second actions at one or more second timings. The one or more first timings may differ from the one or more second timings. The one or more first actions may include (i) adding and / or activating the first group of cells as one or more serving cells, and / or (ii) adding and / or activating the second group of cells as one or more serving cells.The one or more second actions may include (i) activating beam 1 (e.g., for the first group of cells), and / or (ii) activating beam 2 (e.g., for the second group of cells). The UE may not activate the third group of cells in response to the second information 1304 (e.g., the UE may not activate the third group of cells based on the fact that the second information 1304 does not contain an indication of beam 3).

[0550] Example 33

[0551] In Example 33, other cells associated with the beam can be added.

[0552] In some instances, the UE may activate and / or add one or more cells associated with one or more beams in the beam group indicated in the second information (e.g., the UE may activate and / or add all cells associated with the one or more beams in the beam group). The one or more cells associated with the one or more beams in the beam group may not be associated with (and / or may not be included in) the one or more groups of cells (e.g., the one or more first groups of cells).

[0553] Example 34

[0554] In Example 34, one or more existing cells with the indicated beam can be removed / released / revoked from activation.

[0555] In some instances, in response to (i) receiving the second information and / or (ii) initiating or completing a mobility procedure (and / or in the event of the foregoing), the UE may remove / release / deactivate one or more current and / or existing cells, including one, some, and / or all of the current and / or existing cells associated with the beam group indicated in the second information. After receiving the second information (and / or after completing the mobility procedure), the one or more current and / or existing cells may not be considered the UE's serving cells.

[0556] Figure 14The scenario 1400 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communications with: (i) a cell having an activated beam, i.e., beam 1, i.e., current cell 1 (e.g., an activated cell), and (ii) a cell having an activated beam, i.e., beam 2, i.e., current cell 2 (e.g., an activated cell). At time t2, the UE receives first information 1402 (e.g., an RRC message) indicating: (i) a first group of cells having an associated beam, i.e., beam 1 (e.g., one or more cells in the first group), and (ii) a second group of cells having an associated beam, i.e., beam 2 (e.g., one or more cells in the second group). For example, the first information 1402 may indicate that the first group of cells is associated with beam 1 (associated with current cell 1) and / or the second group of cells is associated with beam 2 (associated with current cell 2). At time t3, the UE receives second information 1404 indicating beam 1. In some instances, the second information 1404 does not indicate the index / identity associated with the first group of cells, nor does it indicate the index / identity associated with the second group of cells. In some instances, the second information 1404 does not indicate the cell index / identity associated with a cell. In response to the second information 1404, the UE may add and / or activate the first group of cells as one or more serving cells (e.g., based on the first group of cells being associated with beam 1 and / or based on beam 1 indicated by the second information 1404). The first group of cells may be added and / or activated after time t3 (in response to the second information 1404). The UE may activate beam 1 for the first group of cells (e.g., on the first group of cells) (e.g., after time t3). The UE may add and / or activate the first group of cells as one or more serving cells, and may activate beam 1 for the first group of cells (e.g., on the first group of cells) at different time intervals. The UE may remove / release / revoke activation of the current cell 1 in response to the second information 1404 (e.g., because the second information 1404 indicates beam 1). In some instances, the UE may not remove / release / revoke activation of the current cell 2 in response to the second information 1404 (e.g., because the second information 1404 does not indicate beam 2).

[0557] Example 35

[0558] In Example 35, one or more cells that are not associated with the beam group can be removed / released / revoked from activation.

[0559] In some instances, in response to (i) receiving the second information and / or (ii) initiating or completing a mobility procedure (and / or in the event of the foregoing), the UE may remove / release / revoke activation of one or more cells not associated with the beam group indicated in the second information. The one or more removed / released / revoked activated cells may be the UE's current and / or existing cells.

[0560] Figure 15 The scenario 1500 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communications with: (i) a cell having an activated beam, i.e., beam 1, i.e., current cell 1 (e.g., an activated cell), and (ii) a cell having an activated beam, i.e., beam 2, i.e., current cell 2 (e.g., an activated cell). At time t2, the UE receives first information 1502 (e.g., an RRC message) indicating: (i) a first group of cells having an associated beam, i.e., beam 1 (e.g., one or more cells in the first group), and (ii) a second group of cells having an associated beam, i.e., beam 2 (e.g., one or more cells in the second group). For example, the first information 1502 may indicate that the first group of cells is associated with beam 1 (associated with current cell 1), and / or the second group of cells is associated with beam 2 (associated with current cell 2). At time t3, the UE receives second information 1504 indicating beam 1. In some instances, the second information 1504 does not indicate the index / identity associated with the first group of cells, nor does it indicate the index / identity associated with the second group of cells. In some instances, the second information 1504 does not indicate the cell index / identity associated with a cell. In response to the second information 1504, the UE may add and / or activate the first group of cells as one or more serving cells (e.g., based on the first group of cells being associated with beam 1 and / or based on beam 1 indicated by the second information 1504). The first group of cells may be added and / or activated after time t3 (in response to the second information 1504). The UE may activate beam 1 for the first group of cells (e.g., on the first group of cells). The UE may remove / release / revoke activation of the current cell 2 in response to the second information 1504 (e.g., because the second information 1504 indicates beam 1 and the current cell 2 is not associated with beam 2 and / or is not activated with beam 2). In some instances, the UE may not remove / release / revoke activation of the current cell 1 in response to the second information 1504. Alternatively, the UE may also remove / release / revoke activation of the current cell 1 in response to the second information 1504.

[0561] Alternatively and / or additionally, the UE may not remove / release / revoke activation of one or more current and / or existing cells not associated with the beam group (e.g., the beam group indicated in the second information). After receiving the second information (and / or after completing the mobility procedure), the one or more current and / or existing cells not associated with the beam group may be one or more serving cells of the UE.

[0562] Alternatively and / or additionally, the UE may not remove / release / deactivate one or more current and / or existing cells in response to receiving the second information (e.g., the UE may not remove / release / deactivate any current and / or existing cells). Before receiving the second information (and, for example, after receiving the second information), the one or more current and / or existing cells may be one or more serving cells of the UE. Alternatively and / or additionally, before completing the mobility procedure (and, for example, after completing the mobility procedure), the one or more current and / or existing cells may be one or more serving cells of the UE.

[0563] Alternatively and / or additionally, in response to the second information, the UE may remove / release / deactivate one or more current and / or existing cells, including (e.g., one, some, and / or all of the UE's current and / or existing cells). The one or more current and / or existing cells may be associated with the beam group indicated in the second information (e.g., the one or more current and / or existing cells may include one, some, and / or all of the current and / or existing cells associated with the beam group indicated in the second information). The one or more current and / or existing cells may not be associated with the beam group indicated in the second information (e.g., the one or more current and / or existing cells may include one, some, and / or all of the current and / or existing cells not associated with the beam group indicated in the second information). Before receiving the second information and / or before completing the mobility procedure, the one or more current and / or existing cells may be one or more serving cells of the UE (e.g., before receiving the second information and / or before completing the mobility procedure, the one or more current and / or existing cells may include one, some, and / or all of the current and / or existing cells that are serving cells of the UE).

[0564] Alternatively and / or additionally, in response to second information associated with one or more cells in an added and / or activated CG (e.g., an MCG or an SCG), the UE may remove / release / revoke activation of one or more current and / or existing cells of the CG (e.g., the one or more current and / or existing cells may include one, some, and / or all of the current and / or existing cells of the CG). The UE may not remove / release / revoke activation of one or more current and / or existing cells of a CG other than those associated with the one or more added and / or activated cells (e.g., the one or more cells added and / or activated based on the second information).

[0565] Alternatively and / or additionally, in response to second information associated with adding and / or activating one or more cells in a CG (e.g., an MCG or an SCG), the UE may remove / release / revoke activation of one or more current and / or existing cells in the one or more CGs. The one or more current and / or existing cells may include one, some, and / or all of the current and / or existing cells in the one or more CGs. The one or more CGs may include (e.g., one, some, and / or all of the CGs configured for use by the UE).

[0566] The second information may not indicate (e.g., include) one or more indexes / identities associated with (e.g., those that will be removed / released / revoked in response to the second information) one or more current and / or existing cells.

[0567] Alternatively and / or additionally, the second information may indicate one or more indices / identities associated with one or more current and / or existing cells that will be removed / released / revoked from activation by the UE in response to receiving the second information. The UE may remove / release / revoke activation of the one or more current or existing cells associated with said one or more indices / identities (e.g., configured to use said one or more indices / identities). Alternatively and / or additionally, the UE may remove / release / revoke activation of one or more current and / or existing cells in a CG that includes one or more current or existing cells associated with said one or more indices / identities indicated in the second information (e.g., the one or more current and / or existing cells removed / released / revoked from activation by the UE may include one, some, and / or all of the current and / or existing cells in the CG).

[0568] Example 36

[0569] In Example 36, a cell may be associated with an mTRP (e.g., an mTRP beam).

[0570] In some instances, a group of cells may be associated with multiple beams (e.g., mTRP beams). Each of the multiple beams may be associated with a TRP of the group of cells. Different beams may be associated with different TRPs of the group of cells. The UE may activate the multiple beams in response to receiving second information indicating the multiple beams for the group of cells (e.g., the multiple beams indicated in the second information).

[0571] Example 37

[0572] In embodiment 37, the UE can distinguish between inter-cell mTRP indication, inter-cell mobility, and SCell addition (e.g., based on at least one of logical channel ID (LCID), field, flag, etc.).

[0573] In response to receiving signaling (and / or upon receiving signaling and / or after receiving signaling), the UE may determine (e.g., decide) whether to (i) add and / or activate one or more cell groups or (ii) perform inter-cell mTRP operation based on the signaling content. The signaling may indicate a beam group (e.g., a group of one or more beams). A first MAC CE (e.g., a first-type MAC CE) may be used to instruct (e.g., issue a command to the UE) to perform inter-cell mTRP operation on said beam group. A second MAC CE (e.g., a second-type MAC CE) may be used to instruct (e.g., issue a command to the UE) to add and / or activate one or more cell groups. The first MAC CE and the second MAC CE may be associated with different LCIDs. The first MAC CE may be different from the second MAC CE. The first-type MAC CE may be different from the second-type MAC CE. In an example, the UE may determine (e.g., decide) to perform inter-cell mTRP operation (in response to signaling) based on signaling including the first MAC CE (and / or the first-type MAC CE). The UE may determine (e.g., decide) to add and / or activate one or more groups of cells based on signaling including a second MAC CE (and / or a second type of MAC CE) (in response to signaling).

[0574] In response to receiving second information (e.g., signaling) indicating the beam group (and / or upon receiving the second information and / or after receiving the second information), the UE may determine (e.g., decide) whether to (i) add and / or activate one or more groups of cells based on the second information, or (ii) perform inter-cell mTRP operation based on the second information, or (iii) perform inter-cell mobility to the one or more groups of cells associated with the beam group based on the second information (e.g., based on the content of the second information).

[0575] For example, the second information may be associated with an LCID (e.g., it may include an LCID). The second information may be associated with multiple LCIDs. Different LCIDs may be associated with different actions (that can be performed based on the second information). In an example, a first LCID may be associated with one or more first actions (e.g., the UE may perform the one or more first actions based on the second information including the first LCID), a second LCID may be associated with one or more second actions (e.g., the UE may perform the one or more second actions based on the second information including the second LCID), and so on. In response to receiving second information indicating the beam group, the UE may determine one or more actions to perform based on the LCID indicated by the second information, wherein the one or more actions may be selected from a plurality of actions (based on the LCID), the plurality of actions including: (i) adding and / or activating one or more cells associated with the beam group (e.g., the group or groups of cells) (e.g., the one or more cells may be added and / or activated as serving cells), (ii) performing inter-cell mTRP operations with one or more cells associated with the beam group (e.g., the group or groups of cells), (iii) switching the UE’s PCell or PSCell to a cell in the group or groups of cells associated with the beam group (e.g., a single cell), and / or (iv) removing / releasing / revoking activation of one or more current and / or existing cells.

[0576] Alternatively and / or additionally, the second information may be associated with a different DCI format. For example, the UE may determine one or more actions to be performed (among the plurality of actions) based on the DCI format of the DCI associated with the second information (e.g., the second information may be received via a DCI, such as where the DCI includes the second information).

[0577] Alternatively and / or additionally, the second information may indicate (e.g., may include) instructing (e.g., issuing a command to) the UE to perform one or more of the plurality of actions according to the beam group, using fields (e.g., fields in MAC CE or DCI) and / or flags (e.g., one or two flags). For example, the UE may determine the one or more actions (of the plurality of actions) to be performed based on this field and / or the flag.

[0578] Figure 16The scenario 1600 associated with the UE is illustrated. At time t1, the UE is configured to use and / or perform communication with a cell having an activated beam, i.e., beam 1, i.e., current cell 1 (e.g., an activated cell). At time t2, the UE receives first information 1602 (e.g., an RRC message) indicating the following: (i) a first group of cells having an associated beam, i.e., beam 1 (e.g., one or more cells in the first group), (ii) a second group of cells having an associated beam, i.e., beam 2 (e.g., one or more cells in the second group), and (iii) a third group of cells having an associated beam, i.e., beam 3 (e.g., one or more cells in the third group). For example, first information 1302 may indicate that the first group of cells is associated with beam 1 (associated with current cell 1), the second group of cells is associated with beam 2 (associated with current cell 2), and / or the third group of cells is associated with beam 3. At time t3, the UE receives first group second information 1604, which indicates beam 1 and has a flag (and / or field and / or LCID) indicating SCell activation. In some instances, the first group of second information 1604 may include DCI and / or MAC CE. In response to the first group of second information 1604, the UE may add and / or activate the first group of cells as one or more serving cells (e.g., based on the association of the first group of cells with beam 1 and / or based on the indication of beam 1 based on the first group of second information 1604). The UE may activate beam 1 for the first group of cells (e.g., on the first group of cells). At timing t4, the first group of cells may be added and / or activated and / or beam 1 may be activated. The UE may remove / release / deactivate the currently activated cell 1 in response to the first group of second information 1604. Alternatively, the UE may not remove / release / deactivate the currently activated cell 1 in response to the first group of second information 1604.

[0579] At time t5, the UE receives a second set of second information 1606, which indicates beam 2 and has a flag (and / or field and / or LCID) indicating inter-cell mTRP. In some instances, the second set of second information 1606 may include DCI and / or MAC CE. In response to the second set of second information 1606, the UE activates beam 2 for the second group of cells. The UE performs inter-cell mTRP on the second group of cells in response to the second set of second information 1606 (as a secondary cell, an additional cell, and / or a non-serving cell, not a serving cell). For example, the UE may regard (and / or use as) one or more secondary cells, one or more additional cells, and / or one or more non-serving cells in the second group of cells. The UE may be configured to use one or more serving cells to perform inter-cell mTRP operations with the second group of cells (e.g., the UE may be provided with an indication of the one or more serving cells). In an example, the inter-cell mTRP operation may be performed using a serving cell from the one or more serving cells and one or more cells from the second group of cells (e.g., one or more secondary cells, one or more additional cells, and / or one or more non-serving cells). At time t6, the UE may activate beam 2 for the second group of cells, and / or may perform inter-cell mTRP on the second group of cells.

[0580] At time t7, the UE receives third group second information 1608, which indicates beam 3 and has a flag indicating a handover of PCell (and / or mobility procedures and / or PCell change). In some instances, third group second information 1608 may include DCI and / or MAC CE. In response to third group second information 1608, the UE may hand over its PCell to a cell in the third group of cells (e.g., a single cell) (e.g., based on the association of the third group of cells with beam 3 and / or based on the indication of beam 3 in third group second information 1608). The UE may activate beam 3 for the third group of cells (e.g., on the third group of cells) in response to third group second information 1608. At time t8, the UE may activate beam 3 for the third group of cells and / or the PCell of the handoverable UE.

[0581] In some instances, the first set of second information 1604, the second set of second information 1606, and the third set of second information 1608 do not indicate the cell index / identity associated with the cell, such as the first group of cells, the second group of cells, and / or the third group of cells. In some instances, the first set of second information 1604, the second set of second information 1606, and / or the third set of second information 1608 do not contain servcellindex or physcellid.

[0582] Example 38

[0583] In embodiment 38, the second information may indicate that existing activated beams and / or flags (e.g., flags in the second information) indicate PCell switching.

[0584] In some instances, the second information may indicate a beam associated with the current and / or existing cell and / or a flag indicating a PCell or PSCell handover. The current and / or existing cell may be an SCell. In response to the second information, the UE may: (i) hand over the UE's PCell or the UE's PSCell to the current and / or existing cell, and (ii) use and / or activate a beam for the current and / or existing cell (e.g., on the current and / or existing cell), wherein the beam is the same as the beam that was used and / or activated (e.g., for communicating with the current and / or existing cell) before receiving the second information (and / or before handing over the PCell or PSCell to the current and / or existing cell). Alternatively, in response to the second information, the UE may: (i) hand over the PCell or PSCell to the current or existing cell, and (ii) use and / or activate the beam indicated in the second information for the current and / or existing cell (e.g., on the current and / or existing cell).

[0585] The UE may, in response to a mobility procedure (e.g., initiation or completion of a mobility procedure) and / or in response to the receipt of second information, designate one or more cells from the group or groups of cells (e.g., one, some, and / or all of the cells from the group or groups of cells indicated by the first and / or second information) as the serving cell. The first and / or second information may indicate whether the group or groups of cells are for the MCG or the SCG.

[0586] Each of the group or multiple cell groups may be associated with a TCI state (e.g., DL TCI state or UL TCI state) (e.g., indicated as associated with it). For example, first information (e.g., TCI-StateId in the first information) may indicate the TCI state (e.g., DL TCI state or UL TCI state) associated with a group of the group or multiple cell groups. The first group of cells (e.g., in the group or multiple cell groups) may be associated with a first TCI state identity (e.g., indicated as associated with it). In response to (i) initiating or completing a mobility procedure associated with adding and / or activating the first group of cells and / or (ii) receiving second information associated with adding and / or activating the first group of cells (and / or when the above occurs), the UE may activate a beam (and / or reference signal) associated with the first TCI state identity to listen for DL ​​signaling (and / or transmit UL data) on one or more cells in the first group of cells. In some instances, the second information may not indicate the TCI state associated with the first group of cells, and may not indicate the reference signal associated with the first group of cells.

[0587] In some instances, in order to switch the UE's PCell or PSCell to a cell associated with the beam group, the UE may regard the cell as the target cell.

[0588] In some instances, the embodiments disclosed herein may be implemented independently and / or separately, such as the embodiments described with respect to each of Embodiments 1-38. Alternatively and / or additionally, combinations of the embodiments described herein may be implemented, such as combinations of one, some, and / or all of the embodiments described with respect to Embodiments 1-38. Alternatively and / or additionally, combinations of the embodiments described herein may be implemented in parallel and / or simultaneously, such as combinations of one, some, and / or all of the embodiments described with respect to Embodiments 1-38.

[0589] The various techniques, embodiments, methods, and / or alternatives disclosed herein may be performed independently and / or separately. Alternatively and / or additionally, the various techniques, embodiments, methods, and / or alternatives disclosed herein may be combined and / or implemented using a single system. Alternatively and / or additionally, the various techniques, embodiments, methods, and / or alternatives disclosed herein may be implemented in parallel and / or simultaneously.

[0590] With respect to one or more embodiments described herein, such as one or more technologies, apparatuses, concepts, methods, instance scenarios, and / or alternatives described above, a mobility procedure may be used to add, release, and / or switch one or more SCells of the UE. In some instances, the mobility procedure may not add, release, or switch the PCell and / or PSCell of the UE.

[0591] Alternatively and / or additionally, a mobility procedure may include the UE triggering and / or generating a message, and / or transmitting the message to the target cell. The mobility procedure may include the UE initiating a random access procedure (e.g., a contention-free random access procedure) on the target cell. The random access procedure may be initiated in response to the message becoming available for transmission. The message may indicate the completion of the mobility procedure. The mobility procedure may be used to hand over the UE's PCell (or PSCell) to the target cell. The UE may consider the mobility procedure complete in response to the completion of the random access procedure. The UE may consider the mobility procedure complete in response to receiving a positive acknowledgment associated with the message (e.g., from the target cell). The message may be a mobility completion message. In some instances, the mobility completion message may not include an RRC message. The mobility completion message may include a MAC CE. The mobility completion message may be transmitted via PUCCH or PUSCH.

[0592] In some instances, a mobility procedure (e.g., an L1 / L2 mobility procedure) may include the serving cell providing the UE with first information (e.g., first information regarding one, some, and / or all of the embodiments 1-38 discussed), wherein the first information provides (e.g., indicates) a configuration (e.g., cell configuration) associated with the target cell. The configuration may include cell addition information and / or beaming information associated with the target cell. The first information may be dedicated signaling to the UE. The source cell may provide the UE with second information (e.g., second information regarding one, some, and / or all of the embodiments 1-38 discussed), indicating the initiation of a mobility procedure to the target cell. The mobility procedure may include a random access procedure, one or more PUSCH transmissions, and / or beam / TCI state activation. In some instances, the second information does not include RRC signaling and / or RRC messages. The second information may be an L1 (e.g., downlink control information) or L2 (e.g., MAC CE) message. The first and second information may be transmitted in different signaling and / or timings. In some instances, the UE may initiate a mobility procedure to the target cell without responding to a first message (e.g., in response to receiving a first message). The UE may transmit a mobility completion message to the target cell, indicating the completion of the mobility procedure. Alternatively and / or additionally, the target cell may transmit an acknowledgment to the UE, indicating the completion of the mobility procedure. The UE may consider the mobility procedure complete in response to the acknowledgment from the target cell. Alternatively and / or additionally, the UE may consider the mobility procedure complete in response to the transmission of a mobility completion message. Alternatively and / or additionally, the UE may consider the mobility procedure complete in response to the completion of a random access procedure (e.g., a random access procedure associated with the mobility procedure, such as a random access procedure executed as part of the mobility procedure).

[0593] Mobility procedures may include cross-regional handover procedures and / or a portion of a synchronized reconfiguration procedure.

[0594] The completion of mobility procedures may correspond to the completion of random access procedures associated with the mobility procedures. Alternatively and / or additionally, the completion of mobility procedures may correspond to the transmission of a mobility completion message (e.g., to the target cell). Alternatively and / or additionally, the completion of mobility procedures may correspond to the receipt of an acknowledgment of the mobility completion message (e.g., from the target cell).

[0595] In some instances, the mobility procedure does not involve synchronous reconfiguration (e.g., not a Layer 3 cross-regional handover).

[0596] In one or more embodiments described herein, the first information may be an RRC message (e.g., an RRCReconfiguration message).

[0597] The first information may include the UL and / or DL ​​resource configuration associated with the target cell (and / or one or more cells added as an SCell when initiating or completing a mobility procedure).

[0598] The first information may include the target cell and the ServingCellConfigCommon of the one or more cells. The one or more cells may be candidate serving cells of the UE's MCG or SCG.

[0599] In one or more embodiments described herein, the second information is not an RRC message (e.g., the second information is not RRC signaling). The second information may include Physical Downlink Control Channel (PDCCH) signaling (e.g., DCI) and / or MAC CE.

[0600] The second information may include sCellToAddModList and / or sCellToReleaseList (e.g., in cell information). The second information may indicate (e.g., may include) one or more cell lists indicating cells (e.g., SCells) to be added / modified / released when initiating or completing a mobility procedure.

[0601] The second piece of information may not be (and / or may not include) SCell activation / deactivation MAC CE.

[0602] Regarding one or more embodiments herein, the L1 / L2 handover procedure may be a mobility procedure. Regarding one or more embodiments herein, the L1 / L2 handover (HO) may not be a reconfiguration procedure with synchronization. The mobility procedure may be a procedure for inter-cell mobility centered on L1 / L2.

[0603] With respect to one or more embodiments herein, mobility procedures may include the UE transmitting UL data and / or control information to a target cell. UL data may include information associated with the UE (e.g., Cell Radio Network Temporary Identifier (C-RNTI) MAC CE). UL data may be transmitted via PUSCH. UL control information may be transmitted via PUCCH.

[0604] Regarding one or more embodiments herein, the one or more cells may not include a PCell or a target cell. Second information may indicate the target cell to the UE and additionally indicate the one or more cells to it (e.g., via cell information), wherein the UE initiates a mobility procedure and, in response to the completion (or initiation) of the mobility procedure, regards the target cell as a PCell.

[0605] Regarding one or more embodiments herein, in order to add a cell (e.g., a candidate serving cell) associated with an identity (e.g., SCellIndex), the UE adds the cell as an SCell and applies the cell's configuration (e.g., cell configuration). The cell's configuration may be indicated in first information (e.g., the cell's configuration may be indicated via one or more parameters in sCellConfigCommon and sCellConfigDedicated).

[0606] In one or more embodiments described herein, the index / identity (e.g., provided in the first information) may not be ServCellIndex. In some instances, the index / identity may not be sCellIndex.

[0607] With respect to one or more embodiments herein, cell information (e.g., in second information) may indicate one or more cells that will be added (in the MCG and / or SCG) in response to receiving the second information.

[0608] In some embodiments, in this disclosure, one, some, and / or all instances of the term "identity" may be replaced by the terms "ID" and / or "id," and / or may be used interchangeably with the aforementioned terms.

[0609] In some embodiments, the term "current cell" in this disclosure may correspond to a cell currently being used by the UE (e.g., SCell, PCell, and / or other types of cells), a cell currently being activated by the UE, and / or a cell with which the UE is communicating.

[0610] One, some, and / or all of the foregoing examples, concepts, techniques, and / or embodiments can be formed and / or combined to form new embodiments.

[0611] Figure 17This is a flowchart 1700 from the UE's perspective, according to an exemplary embodiment. In step 1705, the UE receives from the source cell a first signaling indicating the cell configuration of the target cell (e.g., ServingCellconfig, and / or one or more parameters in sCellConfigCommon and / or sCellConfigDedicated). In step 1710, the UE receives from the source cell a second signaling indicating to hand over the UE's SpCell to the target cell, wherein the second signaling includes PDCCH signaling and / or MAC CE (e.g., the second signaling may be PDCCH signaling or MAC CE). For example, the second signaling may instruct the UE to hand over the UE's SpCell to the target cell. In some instances, the UE performs a handover from the UE's SpCell to the target cell in response to the second signaling. In step 1715, the UE adds one or more second cells as one or more SCells of the UE in response to initiating or completing a handover from the UE's SpCell to the target cell, wherein the second signaling indicates the one or more second cells.

[0612] In one embodiment, adding the one or more second cells as one or more SCells may include: (i) adding the one or more second cells to a set of SCells of the UE (e.g., a set of currently used and / or active SCells), (ii) activating the one or more second cells, and / or (iii) treating the one or more second cells as one or more SCells. The UE may use the one or more second cells (e.g., as SCells) after adding the one or more second cells as one or more SCells.

[0613] In one embodiment, the UE removes, releases, and / or deactivates one or more third cells in response to initiating or completing a handover from the UE's SpCell to the target cell. The one or more third cells may be one or more SCells indicated by a second signaling.

[0614] In one embodiment, removing the one or more third cells may include removing the one or more third cells from a set of SCells of the UE (e.g., a set of currently used and / or active SCells). The UE may cease using the one or more third cells (e.g., as SCells) in response to removal, release, and / or deactivation of the one or more third cells.

[0615] Return to reference Figure 3 and Figure 4In one exemplary embodiment of the UE, the apparatus 300 includes program code 312 stored in memory 310. CPU 308 executes program code 312 such that the UE is able to: (i) receive from the source cell a first signaling indicating the cell configuration of the target cell; (ii) receive from the source cell a second signaling indicating a handover of the UE's SpCell to the target cell, wherein the second signaling includes PDCCH signaling and / or MAC CE; and (iii) add one or more second cells as one or more SCells of the UE in response to initiating or completing a handover of the UE's SpCell to the target cell, wherein the second signaling indicates the one or more second cells. Furthermore, CPU 308 executes program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0616] Figure 18 This is a flowchart 1800 from the UE's perspective, according to an exemplary embodiment. In step 1805, the UE receives a first signaling from the source cell indicating cell information associated with the target cell. The cell information may include the target cell's cell configuration (e.g., one or more parameters in ServingCellconfig, and / or sCellConfigCommon and / or sCellConfigDedicated). In step 1810, the UE receives a second signaling from the source cell indicating to switch the UE's SpCell to the target cell, wherein the second signaling includes PDCCH signaling and / or MAC CE (e.g., the second signaling may be PDCCH signaling or MAC CE). For example, the second signaling may instruct the UE to switch the UE's SpCell to the target cell. In some instances, the UE performs a handover from the UE's SpCell to the target cell in response to the second signaling. In step 1815, the UE removes, releases, and / or deactivates one or more second cells in response to initiating or completing the handover (e.g., a handover from the UE's SpCell to the target cell), wherein the one or more second cells are one or more SCells indicated by the second signaling.

[0617] In one embodiment, removing the one or more second cells may include removing the one or more second cells from a set of SCells of the UE (e.g., a set of currently used and / or active SCells). The UE may cease using the one or more second cells (e.g., as SCells) in response to removal, release, and / or deactivation of the one or more second cells.

[0618] In one embodiment, the UE adds one or more third cells in response to initiating or completing the handover (e.g., a handover from the UE's SpCell to the target cell). The one or more third cells may be indicated by a second signaling.

[0619] In one embodiment, adding the one or more third cells may include: (i) adding the one or more third cells to a set of cells of the UE (e.g., a set of currently used and / or active cells), and / or (ii) activating the one or more third cells. The UE may use the one or more third cells after adding them.

[0620] Return to reference Figure 3 and Figure 4 In one exemplary embodiment of the UE, the apparatus 300 includes program code 312 stored in memory 310. CPU 308 executes program code 312 such that the UE is able to: (i) receive from a source cell a first signaling instruction indicating cell information associated with a target cell; (ii) receive from the source cell a second signaling instruction indicating a handover of the UE's SpCell to the target cell, wherein the second signaling instruction includes PDCCH signaling and / or MAC CE; and (iii) remove, release, and / or revoke activation of one or more second cells in response to initiating or completing the handover, wherein the one or more second cells are one or more SCells indicated by the second signaling instruction. Furthermore, CPU 308 executes program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0621] about Figure 17 and Figure 18 In one embodiment, the first signaling is an RRC message.

[0622] In one embodiment, the first signaling indicates the cell configuration of the one or more second cells (e.g., one or more parameters in ServingCellconfig, and / or sCellConfigCommon and / or sCellConfigDedicated).

[0623] In one embodiment, the first signaling indicates the cell configuration of the one or more third cells (e.g., one or more parameters in ServingCellconfig, and / or sCellConfigCommon and / or sCellConfigDedicated).

[0624] In one embodiment, the second signaling indicates the identity and / or index associated with the one or more second cells.

[0625] In one embodiment, the second signaling indicates the identity and / or index associated with the one or more third cells.

[0626] In one embodiment, SpCell is either PCell or PSCell.

[0627] In one embodiment, the one or more second cells are one or more neighboring cells of the UE before the UE's SpCell is switched to the target cell.

[0628] In one embodiment, the one or more second cells are one or more SCells of the UE before the UE's SpCell is switched to the target cell.

[0629] In one embodiment, the one or more third cells are one or more neighboring cells of the UE before the UE's SpCell is switched to the target cell.

[0630] In one embodiment, the one or more third cells are one or more SCells of the UE before the UE's SpCell is switched to the target cell.

[0631] In one embodiment, the UE determines whether to add or remove / release / revoke the activation of the one or more second cells in response to initiating or completing the handover, based on one or more indicators of second signaling associated with the one or more second cells. For example, the UE may determine to add the one or more second cells based on the one or more indicators indicating the addition of the one or more second cells. Alternatively and / or additionally, the UE may determine to remove / release / revoke the activation of the one or more second cells based on the one or more indicators including indications for the removal / release / revocation of the one or more second cells.

[0632] In one embodiment, the UE determines whether to add or remove / release / revoke the activation of the one or more third cells in response to initiating or completing the handover, based on one or more indicators of second signaling associated with the one or more third cells. For example, the UE may determine to add the one or more third cells based on the one or more indicators indicating the addition of the one or more third cells. Alternatively and / or additionally, the UE may determine to remove / release / revoke the activation of the one or more third cells based on the one or more indicators including indications for the removal / release / revocation of the one or more third cells.

[0633] Figure 19This is a flowchart 1900 from the UE's perspective, according to an exemplary embodiment. In step 1905, the UE receives a first signaling indicating the cell configuration of a first cell (e.g., ServingCellconfig, and / or one or more parameters in sCellConfigCommon and / or sCellConfigDedicated). In step 1910, the UE receives a second signaling indicating the addition of the first cell as an SCell, wherein the second signaling indicates an updated list associated with the first cell. For example, the second signaling may instruct the UE to add the first cell as an SCell. In step 1915, the UE adds the first cell as an SCell. In step 1920, the UE activates one or more beams for the first cell, wherein said one or more beams are one or more activated beams of a second cell, and wherein the second cell is associated with an updated list. For example, the updated list may indicate the second cell. Alternatively and / or additionally, the UE may activate said one or more beams associated with the second cell for the first cell based on the updated list associated with the second cell (e.g., indicating the second cell). In some instances, after activating one or more beams (associated with the second cell) for the first cell, the UE can use the one or more beams to communicate with the first cell.

[0634] In one embodiment, the indicated update list is either simultaneousTCI-UpdateList1 or simultaneousTCI-UpdateList2.

[0635] In one embodiment, the indicated update list is either simultaneousSpatial-UpdatedList1 or simultaneousSpatial-UpdatedList2.

[0636] Return to reference Figure 3 and Figure 4In one exemplary embodiment of the UE, the device 300 includes program code 312 stored in memory 310. CPU 308 executes program code 312 such that the UE is able to: (i) receive first signaling indicating a cell configuration of a first cell; (ii) receive second signaling indicating adding the first cell as an SCell, wherein the second signaling indicates an updated list associated with the first cell; (iii) add the first cell as an SCell; and (iv) activate one or more beams for the first cell, wherein the one or more beams are one or more activated beams of a second cell, and wherein the second cell is associated with an updated list. Furthermore, CPU 308 executes program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0637] Figure 20 This is a flowchart 2000 from the UE's perspective, according to an exemplary embodiment. In step 2005, the UE receives a first signaling indicating the cell configuration of a first cell (e.g., one or more parameters in ServingCellconfig, and / or sCellConfigCommon and / or sCellConfigDedicated). In step 2010, the UE receives a second signaling indicating the addition of the first cell as an SCell, wherein the second signaling indicates a second cell. For example, the second signaling may instruct the UE to add the first cell as an SCell. In step 2015, the UE adds the first cell as an SCell. In step 2020, the UE activates one or more beams for the first cell, wherein the one or more beams are one or more activated TCI states of the second cell.

[0638] In one embodiment, the second signaling indicates the identity and / or serving cell index of the second cell.

[0639] In one embodiment, the second cell is instructed (e.g., by a second signaling instruction) for beam activation and / or TCI state activation of the first cell.

[0640] Return to reference Figure 3 and Figure 4In one exemplary embodiment of the UE, the device 300 includes program code 312 stored in memory 310. CPU 308 executes program code 312 such that the UE is able to: (i) receive first signaling indicating a cell configuration of a first cell; (ii) receive second signaling indicating the addition of the first cell as an SCell, wherein the second signaling indicates a second cell; (iii) add the first cell as an SCell; and (iv) activate one or more beams for the first cell, wherein the one or more beams are one or more activated TCI states of the second cell. Furthermore, CPU 308 executes program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0641] about Figure 19 and Figure 20 In one embodiment, the second cell is the UE's SCell or PCell before the first signaling is received and / or before the second signaling is received.

[0642] In one embodiment, the one or more beams are associated with one or more TCI states.

[0643] In one embodiment, the one or more beams are associated with spatial relational information.

[0644] In one embodiment, the one or more beams are associated with one or more SSBs and / or one or more CSI-RSs.

[0645] In one embodiment, the cell configuration does not indicate the activation of one or more TCI states for the first cell.

[0646] In one embodiment, the second signaling indicates the identity and / or index of the first cell.

[0647] In one embodiment, the second signaling includes PDCCH signaling and / or MAC CE (e.g., the second signaling may be PDCCH signaling or MAC CE).

[0648] In one embodiment, the first signaling is an RRC message.

[0649] In one embodiment, the third cell is indicated to the UE in the second signaling (e.g., the second signaling indicates the third cell), wherein the UE switches its SpCell to the third cell in response to the second signaling.

[0650] Figure 21This is a flowchart 2100 from the UE's perspective, according to an exemplary embodiment. In step 2105, the UE receives first signaling indicating the cell configuration of the first cell (e.g., one or more parameters in ServingCellconfig, and / or sCellConfigCommon and / or sCellConfigDedicated). In step 2110, the UE receives second signaling indicating one or more beams associated with the first cell. In some instances, the second signaling does not indicate the identity of the first cell and does not indicate the index of the first cell. In step 2115, the UE adds and / or activates the first cell as an SCell in response to the second signaling. In step 2120, the UE activates the one or more beams for the first cell (e.g., the UE activates the one or more beams on the first cell).

[0651] In one embodiment, the UE removes, releases, and / or deactivates the second cell, wherein the second cell was activated prior to receiving the second signaling, and wherein the UE activates and / or uses the one or more beams on the second cell. In some instances, the UE has already activated and / or used the one or more beams on the second cell before removing, releasing, and / or deactivating the second cell. Alternatively and / or additionally, the UE may cease using the one or more beams on the second cell in response to removing, releasing, and / or deactivating the second cell.

[0652] In one embodiment, the UE adds and / or activates a first cell as an SCell based on the association of one or more beams indicated by a second signaling with the first cell. For example, based on determining that one or more beams indicated by the second signaling are associated with the first cell, the UE may add and / or activate the first cell as an SCell in response to the second signaling.

[0653] In one embodiment, the association between the first cell and the one or more beams is indicated in the first signaling. For example, the first signaling indicates that the first cell is associated with the one or more beams. Alternatively and / or additionally, the UE determines that the first cell is associated with the one or more beams based on the first signaling.

[0654] In one embodiment, the association between the first cell and the one or more beams is indicated in an RRC message that differs from the first signaling. For example, the RRC message indicates that the first cell is associated with the one or more beams. Alternatively and / or additionally, the UE determines that the first cell is associated with the one or more beams based on the RRC message.

[0655] In one embodiment, a second signaling (and / or a second message in the second signaling) instructs the UE (e.g., sends an instruction to the UE) to add a first cell as a SCell.

[0656] Return to reference Figure 3 and Figure 4 In one exemplary embodiment of the UE, the device 300 includes program code 312 stored in memory 310. CPU 308 executes program code 312 such that the UE is able to: (i) receive first signaling indicating a cell configuration of a first cell; (ii) receive second signaling indicating one or more beams associated with the first cell, wherein the second signaling does not indicate the identity of the first cell and does not indicate an index of the first cell; (iii) add and / or activate the first cell as an SCell in response to the second signaling; and (iv) activate the one or more beams for the first cell. Furthermore, CPU 308 executes program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0657] Figure 22 This is a flowchart 2200 from the UE's perspective, according to an exemplary embodiment. In step 2205, the UE receives first signaling indicating the cell configuration of the first cell (e.g., one or more parameters in ServingCellconfig, and / or sCellConfigCommon and / or sCellConfigDedicated). In step 2210, the UE receives second signaling indicating one or more beams associated with the first cell. In some instances, the second signaling does not indicate the identity of the first cell and does not indicate the index of the first cell. In step 2215, the UE determines, based on the indication of the second signaling, to perform an action associated with the first cell, said action including one of the following: (i) adding and / or activating the first cell as an SCell, (ii) switching the UE's PCell or PSCell to the first cell, or (iii) performing an inter-cell mTRP operation associated with the first cell.

[0658] In one embodiment, the indication includes bit fields and / or flags in the second signaling.

[0659] In one embodiment, if the indication indicates (e.g., issuing a command) to switch PCell or PSCell and / or indicates a handover, then the UE will switch its PCell or PSCell to the first cell. For example, the action includes switching the UE's PCell or PSCell to the first cell if the indication indicates (e.g., issuing a command) to switch PCell or PSCell and / or indicates a handover.

[0660] In one embodiment, if the indication indicates (e.g., issuing a command) to add and / or activate a first cell as an SCell, then the UE adds and / or activates the first cell as an SCell and activates the one or more beams on the first cell. For example, the action includes adding and / or activating the first cell as an SCell and activating the one or more beams if the indication indicates (e.g., issuing a command) to add and / or activate the first cell as an SCell.

[0661] In one embodiment, if the indication instructs (e.g., by issuing a command) to perform an inter-cell mTRP operation associated with a first cell, then the UE performs the inter-cell mTRP operation with the first cell and treats the first cell as a non-serving cell (and / or treats the first cell as a secondary cell and / or an additional cell). For example, the action includes performing the inter-cell mTRP operation with the first cell and treating the first cell as a non-serving cell (and / or treating the first cell as a secondary cell and / or an additional cell) if the indication instructs (e.g., by issuing a command) to perform an inter-cell mTRP operation associated with a first cell.

[0662] In one embodiment, a first cell is associated with a second cell for inter-cell mTRP operations, wherein the second cell is the UE's active serving cell.

[0663] In one embodiment, the UE performs an inter-cell mTRP operation on a first cell via one or more beams.

[0664] Return to reference Figure 3 and Figure 4 In one exemplary embodiment of the UE, the apparatus 300 includes program code 312 stored in memory 310. CPU 308 executes program code 312 such that the UE is able to: (i) receive first signaling indicating a cell configuration of a first cell; (ii) receive second signaling indicating one or more beams associated with the first cell, wherein the second signaling does not indicate the identity of the first cell and does not indicate an index of the first cell; and (iii) determine, based on the indication of the second signaling, to perform an action associated with the first cell, said action including one of: (A) adding and / or activating the first cell as an SCell; (B) switching the UE's PCell or PSCell to the first cell; or (C) performing an inter-cell mTRP operation associated with the first cell. Furthermore, CPU 308 executes program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0665] about Figure 21 and Figure 22In one embodiment, the one or more beams are associated with one or more TCI states.

[0666] In one embodiment, the one or more beams are associated with spatial relational information.

[0667] In one embodiment, the one or more beams are associated with one or more SSBs and / or one or more CSI-RSs.

[0668] In one embodiment, the cell configuration does not indicate the activation of one or more TCI states for the first cell.

[0669] In one embodiment, the second signaling includes PDCCH signaling and / or MAC CE (e.g., the second signaling may be PDCCH signaling or MAC CE).

[0670] In one embodiment, the first signaling is an RRC message.

[0671] In one embodiment, the index of the first cell is the serving cell index.

[0672] In one embodiment, the identity of the first cell is PCI.

[0673] Figure 23 This is a flowchart 2300 from the UE's perspective, according to an exemplary embodiment. In step 2305, the UE receives first signaling configuring one or more groups of cells, including a first group of cells, wherein the first group of cells includes a first SpCell and one or more SCells. In step 2310, the UE receives second signaling instructing the UE to change its serving cell to the first group of cells. For example, the second signaling may instruct the UE to change its serving cell to the first group of cells. In some instances, the second signaling implicitly or explicitly indicates the change of serving cell to the first group of cells. In step 2315, the UE adds and / or activates the first SpCell and the one or more SCells in response to the second signaling.

[0674] In one embodiment, the second signaling includes PDCCH signaling and / or MAC CE. In some instances, the second signaling can be either PDCCH signaling or MAC CE.

[0675] In one embodiment, the first signaling indicates an identity and / or index associated with a first group of cells. The identity may include a PCI associated with the first group of cells. The index may include a serving cell index associated with the first group of cells.

[0676] In one embodiment, the UE determines to change its serving cell to the first group of cells based on an indication of an identity and / or index associated with the first group of cells in a second signaling. For example, the UE may add and / or activate a first SpCell and one or more SCells based on the second signaling indicating the identity and / or index associated with the first group of cells. In an example, the second signaling instructs (e.g., issues a command) to change the UE's serving cell to the first group of cells by indicating the identity and / or index associated with the first group of cells. In an example, the indication of the identity and / or index associated with the first group of cells (in the second signaling) may correspond to an indication and / or command to change the UE's serving cell to the first group of cells (e.g., the indication of the identity and / or the index may be interpreted by the UE as an indication and / or command to change the UE's serving cell to the first group of cells).

[0677] In one embodiment, the first group of cells includes one or more first cells associated with an MCG (e.g., the UE's MCG) and one or more second cells associated with an SCG (e.g., the UE's SCG). In this example, the one or more first cells may be added to and / or activated in the MCG, and / or the one or more second cells may be added to and / or activated in the SCG.

[0678] In one embodiment, all cells in the first group of cells belong to the same CG (e.g., MCG or SCG).

[0679] In one embodiment, the first signaling configures the first group of cells via a CellGroupConfig information element (IE). In some instances, the UE is configured to use the first group of cells via a CellGroupConfig IE provided through the first signaling.

[0680] In one embodiment, the second signaling indicates a CG corresponding to the UE's MCG or SCG. Adding and / or activating a first SpCell and the one or more SCells includes adding and / or activating the first SpCell and the one or more SCells in the CG indicated by the second signaling. For example, the second signaling may indicate whether to add and / or activate the first SpCell and the one or more SCells in the MCG or to add and / or activate the first SpCell and the one or more SCells in the SCG.

[0681] In one embodiment, the first signaling indicates the association between one or more beams and one or more cells in a first group of cells. In some instances, the first SpCell and the one or more SCells may include the one or more cells. In some instances, after adding and / or activating the first SpCell and the one or more SCells, the UE may communicate with the one or more cells via the one or more beams (e.g., based on the indication of the association between the one or more beams and the one or more cells).

[0682] In one embodiment, the UE determines to change its serving cell to the first group of cells based on an indication in second signaling of the identity and / or index of one or more beams associated with one or more cells in the first group of cells. For example, the UE may add and / or activate a first SpCell and the one or more SCells based on the second signaling indicating the identity and / or index of the one or more beams associated with the one or more cells in the first group of cells. In an example, the second signaling instructs (e.g., issues a command) to change the UE's serving cell to the first group of cells by indicating the identity and / or index of the one or more beams associated with the one or more cells in the first group of cells. In some instances, the UE determines to change its serving cell to the first group of cells based on: (i) the indication in second signaling of the identity and / or index of the one or more beams associated with the one or more cells in the first group of cells, and (ii) the indication in first signaling of the association between the one or more beams and the one or more cells in the first group of cells.

[0683] In one embodiment, the group or more cell groups include a second group of cells. The second signaling instructs the UE to change one or more of its second serving cells to the second group of cells.

[0684] In one embodiment, in response to a second signaling, the UE adds and / or activates one or more cells in the second group of cells. For example, in addition to adding and / or activating the first SpCell and the one or more SCells, the UE may also add and / or activate the one or more cells in the second group of cells. Alternatively and / or additionally, the UE may add and / or activate the one or more cells in the second group of cells while adding and / or activating the first SpCell and the one or more SCells.

[0685] In one embodiment, in response to a second signaling, the UE releases and / or revokes activation of one or more third serving cells that are not included in the first group of cells and not included in the second group of cells. In an example, the one or more third serving cells may include one, some, and / or all of the UE's serving cells that are (i) not included in the first group of cells and (ii) not included in the second group of cells.

[0686] In one embodiment, in response to a second signaling, the UE releases and / or revokes activation of one or more fourth serving cells not included in the first group of cells. In an example, the one or more fourth serving cells may include one, some, and / or all of the UE's serving cells not included in the first group of cells.

[0687] In one embodiment, adding and / or activating the first SpCell and the one or more SCells may include: (i) adding the first SpCell and the one or more SCells to a set of cells of the UE (e.g., a set of currently used and / or active cells) (e.g., the set of cells may be associated with a CG indicated by a second signaling), and / or (ii) activating the first SpCell and the one or more SCells. After adding and / or activating the first SpCell and the one or more SCells, the UE can use the first SpCell and the one or more SCells (and / or communicate with them).

[0688] Return to reference Figure 3 and Figure 4 In one exemplary embodiment of the UE, the device 300 includes program code 312 stored in memory 310. CPU 308 executes program code 312 such that the UE is able to: (i) receive first signaling configuring one or more groups of cells including a first group of cells, wherein the first group of cells includes a first SpCell and one or more SCells; (ii) receive second signaling instructing the UE to change its serving cell to the first group of cells (e.g., the second signaling may include PDCCH signaling and / or MAC CE); and (iii) add and / or activate the first SpCell and the one or more SCells in response to the second signaling. Furthermore, CPU 308 executes program code 312 to perform one, some, and / or all of the above actions and steps and / or other actions and steps described herein.

[0689] A communication device (e.g., UE, base station, network node, etc.) may be provided, wherein the communication device may include control circuitry, a processor mounted in the control circuitry, and / or a memory mounted in the control circuitry and coupled to the processor. The processor may be configured to execute program code stored in the memory to perform... Figures 17-23The method steps are shown in the diagram. Furthermore, the processor can execute program code to perform one, some, and / or all of the above actions and steps, and / or other actions and steps described herein.

[0690] A computer-readable medium may be provided. The computer-readable medium may be a non-transitory computer-readable medium. The computer-readable medium may include flash memory devices, hard disk drives, magnetic disks (e.g., at least one of magnetic disks and / or optical disks, such as digital versatile optical disks (DVDs), compressed optical disks (CDs), etc.), and / or memory semiconductors, such as at least one of static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), etc. The computer-readable medium may include processor-executable instructions that, when executed, cause... Figures 17-23 One, some, or all of the method steps shown and / or one, some, or all of the above actions and steps and / or other actions and steps described herein may be performed.

[0691] It is understood that applying one or more of the techniques illustrated herein can produce one or more benefits, including but not limited to increased communication efficiency between devices (e.g., UE and / or network nodes). Improved efficiency can result in enabling the UE to perform mobility changes (e.g., L1 / L2 mobility enhancement SCell / SCG changes), thereby enabling the UE to change cells (e.g., from using one or more first cells to using one or more second cells).

[0692] Various aspects of this disclosure have been described above. It should be understood that the teachings herein can be implemented in a wide variety of forms, and any particular structure, function, or both disclosed herein are merely representative. Based on the teachings herein, those skilled in the art will understand that the aspects disclosed herein can be implemented independently of any other aspects, and two or more of these aspects can be combined in various ways. For example, any number of aspects set forth herein can be used to implement an apparatus or practice. Furthermore, this apparatus or practice can be implemented or practiced by using other structures, functions, or structures and functions other than or different from one or more aspects set forth herein. As examples of some of the foregoing concepts, in some aspects, a parallel channel can be established based on the pulse repetition frequency. In some aspects, a parallel channel can be established based on the pulse position or offset. In some aspects, a parallel channel can be established based on a time-hopping sequence. In some aspects, a parallel channel can be established based on the pulse repetition frequency, the pulse position or offset, and the time-hopping sequence.

[0693] Those skilled in the art will understand that information and signals can be represented using any of a variety of different techniques and skills. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the foregoing description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0694] Those skilled in the art will further understand that the various illustrative logic blocks, modules, processors, components, circuits, and algorithm steps described in conjunction with the aspects disclosed herein can be implemented as electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of both, which may be designed using source decoding or some other technique) and various forms of program or design code with instructions (which, for convenience, may be referred to herein as "software" or "software module"), or a combination of both. To clearly illustrate this interchangeability between hardware and software, the functionality of the various illustrative components, blocks, modules, circuits, and steps has been described above in general terms. Whether this functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art can implement the described functionality in different ways for each specific application, but such implementation decisions should not be construed as causing a deviation from the scope of this disclosure.

[0695] Furthermore, the various illustrative logic blocks, modules, and circuits described in connection with the aspects disclosed herein may be implemented within or executed by an integrated circuit (“IC”), access terminal, or access point. An IC may include a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, electrical components, optical components, mechanical components, or any combination thereof designed to perform the functions described herein and capable of executing code or instructions residing within the IC, outside the IC, or both. A general-purpose processor may be a microprocessor, but alternatively, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a combination of multiple microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration.

[0696] It should be understood that any particular order or hierarchy of steps in any disclosed process is an instance of an example method. It should be understood that a particular order or hierarchy of steps in the process may be rearranged based on design preferences while remaining within the scope of this disclosure. The accompanying method claims present the elements of the various steps in an example order, but are not intended to limit one to the particular order or hierarchy presented.

[0697] The steps of the methods or algorithms described in conjunction with the aspects disclosed herein can be implemented directly in hardware, with software modules executed by a processor, or a combination of both. Software modules (e.g., containing executable instructions and associated data) and other data can reside in data memory, such as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disks, removable disks, CD-ROMs, or any other form of computer-readable storage media known in the art. Example storage media can be coupled to a machine such as a computer / processor (for convenience, this machine may be referred to herein as a "processor"), such that the processor can read information (e.g., code) from the storage media and write information to the storage media. Example storage media can be integrated with the processor. The processor and storage media can reside in an ASIC. The ASIC can reside in a user equipment. Alternatively, the processor and storage media can reside in a user equipment as discrete components. Alternatively or additionally, in some aspects, any suitable computer program product may include computer-readable media comprising code associated with one or more aspects of this disclosure. In some respects, computer program products may include packaging materials.

[0698] While the disclosed subject matter has been described in conjunction with various aspects, it should be understood that further modifications can be made to the disclosed subject matter. This application is intended to cover any changes, uses, or adaptations to the disclosed subject matter that generally follow the principles of the disclosed subject matter and include such deviations from this disclosure that fall within the scope of known and customary practice in the art to which the disclosed subject matter pertains.

Claims

1. A method for a user equipment, characterized in that, The method includes: The receiving configuration includes a first signaling of one or more groups of cells in a first group of cells, wherein the first group of cells includes a first special cell and one or more sub-cells; Receive a second signaling instruction to switch the user equipment from the current serving cell to the first group of cells; In response to the second signaling, add or activate the first special cell and the one or more sub-cells; and In response to the second signaling, the currently serving cell is released.

2. The method according to claim 1, characterized in that: The first signaling indicates at least one of the identities or indices associated with the first group of cells.

3. The method according to claim 1, characterized in that, include: Based on the indication in the second signaling of at least one of the identities or indices associated with the first group of cells, it is determined that the serving cell of the user equipment will be changed to the first group of cells.

4. The method according to claim 1, characterized in that: The first group of cells includes one or more cells associated with the primary cell group and one or more cells associated with the secondary cell group.

5. The method according to claim 1, characterized in that: All the cells in the first group belong to the same cell group.

6. The method according to claim 1, characterized in that: The first signaling configures the first group of cells via the CellGroupConfig information element.

7. The method according to claim 1, characterized in that: The second signaling indicates the cell group corresponding to the primary cell group or secondary cell group of the user equipment; and Adding or activating the first special cell and the one or more sub-cells includes adding or activating the first special cell and the one or more sub-cells in the cell group indicated by the second signaling.

8. The method according to claim 1, characterized in that: The first signaling indicates the association between one or more beams and one or more cells in the first group of cells.

9. The method according to claim 8, characterized in that, include: In response to the second signaling, at least one transmission configuration indicator state of one or more identity indications is activated, wherein the second signaling indicates the one or more identities associated with the one or more beams.

10. The method according to claim 1, characterized in that: The group or multiple groups of cells includes a second group of cells; and The second signaling instruction indicates that one or more second serving cells of the user equipment be changed to the second group of cells.

11. The method according to claim 10, characterized in that, include: In response to the second signaling, add or activate one or more cells in the second group of cells.

12. The method according to claim 10, characterized in that, include: In response to the second signaling, release or revoke activation of one or more third serving cells that are not included in the first group of cells and not included in the second group of cells.

13. The method according to claim 1, characterized in that, include: In response to the second signaling, release or revoke activation of one or more second serving cells that are not included in the first group of cells.

14. The method according to claim 1, characterized in that: The second signaling includes at least one of physical downlink control channel signaling or media access control control elements.

15. A user equipment, characterized in that, The user equipment includes: Control circuit; The processor installed in the control circuit; and A memory installed in the control circuit and operatively coupled to the processor, wherein the processor is configured to execute program code stored in the memory to perform operations, the operations including: The receiving configuration includes a first signaling of one or more groups of cells in a first group of cells, wherein the first group of cells includes a first special cell and one or more sub-cells; Receive a second signaling instruction to switch the user equipment from the current serving cell to the first group of cells; In response to the second signaling, add or activate the first special cell and the one or more sub-cells; and In response to the second signaling, the currently serving cell is released.

16. The user equipment according to claim 15, characterized in that: The first signaling indicates at least one of the identities or indices associated with the first group of cells.

17. The user equipment according to claim 15, characterized in that, include: Based on the indication in the second signaling of at least one of the identities or indices associated with the first group of cells, it is determined that the serving cell of the user equipment will be changed to the first group of cells.

18. The user equipment according to claim 15, characterized in that: The second signaling indicates the cell group corresponding to the primary cell group or secondary cell group of the user equipment; and Adding or activating the first special cell and the one or more sub-cells includes adding or activating the first special cell and the one or more sub-cells in the cell group indicated by the second signaling.

19. The user equipment according to claim 18, characterized in that, include: In response to the second signaling, at least one transmission configuration indicator state of one or more identity indications is activated, wherein the first signaling indicates the association between one or more beams and one or more cells in the first group of cells, and the second signaling indicates the one or more identities associated with the one or more beams.

20. The user equipment according to claim 15, characterized in that: The second signaling includes at least one of physical downlink control channel signaling or media access control control elements.

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