WO2020223946A1 - Stockage de configurations de combinaison de bandes pour reprise de connexion d'ue - Google Patents

Stockage de configurations de combinaison de bandes pour reprise de connexion d'ue Download PDF

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Publication number
WO2020223946A1
WO2020223946A1 PCT/CN2019/086129 CN2019086129W WO2020223946A1 WO 2020223946 A1 WO2020223946 A1 WO 2020223946A1 CN 2019086129 W CN2019086129 W CN 2019086129W WO 2020223946 A1 WO2020223946 A1 WO 2020223946A1
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WIPO (PCT)
Prior art keywords
request
master node
communication
node
capability
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PCT/CN2019/086129
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English (en)
Inventor
Peng Cheng
Huichun LIU
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Qualcomm Incorporated
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Priority to PCT/CN2019/086129 priority Critical patent/WO2020223946A1/fr
Publication of WO2020223946A1 publication Critical patent/WO2020223946A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/22—Processing or transfer of terminal data, e.g. status or physical capabilities
    • H04W8/24—Transfer of terminal data

Definitions

  • aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for storing band combination configurations for user equipment (UE) connection resume.
  • UE user equipment
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
  • Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like) .
  • multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) .
  • LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • UMTS Universal Mobile Telecommunications System
  • a wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs) .
  • a user equipment (UE) may communicate with a base station (BS) via the downlink and uplink.
  • the downlink (or forward link) refers to the communication link from the BS to the UE
  • the uplink (or reverse link) refers to the communication link from the UE to the BS.
  • a BS may be referred to as a Node B, a gNB, an access point (AP) , a radio head, a transmit receive point (TRP) , a New Radio (NR) BS, a 5G Node B, and/or the like.
  • New Radio which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • 3GPP Third Generation Partnership Project
  • NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) , using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink (UL) , as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDM e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)
  • DFT-s-OFDM discrete Fourier transform spread OFDM
  • MIMO multiple-input multiple-output
  • a method of wireless communication may include receiving, from a first master node serving the UE, a communication that includes a command to transition from an active state to an inactive state or an idle state, wherein the communication includes an indication of one or more candidate frequency band combinations; transmitting, based at least in part on transitioning from the inactive state or the idle state to the active state, a request to communicatively connect with a second master node, wherein the request includes an indication of a requested frequency band combination of the one or more candidate frequency band combinations; and receiving, from the second master node, information associated with a secondary node, for the UE, that is capable of using the requested frequency band combination.
  • a UE for wireless communication may include memory and one or more processors operatively coupled to the memory.
  • the memory and the one or more processors may be configured to receive, from a first master node serving the UE, a communication that includes a command to transition from an active state to an inactive state or an idle state, wherein the communication includes an indication of one or more candidate frequency band combinations; transmit, based at least in part on transitioning from the inactive state or the idle state to the active state, a request to communicatively connect with a second master node, wherein the request includes an indication of a requested frequency band combination of the one or more candidate frequency band combinations; and receive, from the second master node, information associated with a secondary node, for the UE, that is capable of using the requested frequency band combination.
  • a method of wireless communication may include receiving, based at least in part on a UE transitioning from an inactive state to an active state, a request for the UE to communicatively connect with the base station as a first master node; transmitting, to a second master node, a request for information identifying a UE capability for a UE, wherein the second master node served the UE prior to the UE transitioning from the inactive state to the active state; identifying, based at least in part on the UE capability, a secondary node for the UE; and transmitting, to the UE, information associated with the secondary node.
  • a method of wireless communication may include receiving, based at least in part on a UE transitioning from an inactive state or an idle state to an active state, a request for the UE to communicatively connect with the base station as a first master node, wherein the request indicates a requested combination of frequency bands for the UE, wherein the requested combination of frequency bands is included in a plurality of candidate combinations of frequency bands indicated, to the UE, by a second master node, wherein the second master node served the UE prior to the UE transitioning from the inactive state or the idle state to the active state; identifying, based at least in part on receiving the request, a secondary node, for the UE, that is capable of using the requested combination of frequency bands; and transmitting, to the UE, information associated with the secondary node.
  • an apparatus for wireless communication may include means for receiving, based at least in part on a UE transitioning from an inactive state or an idle state to an active state, a request for the UE to communicatively connect with the apparatus as a first master node, wherein the request indicates a requested combination of frequency bands for the UE, wherein the requested combination of frequency bands is included in a plurality of candidate combinations of frequency bands indicated, to the UE, by a second master node, wherein the second master node served the UE prior to the UE transitioning from the inactive state or the idle state to the active state; means for identifying, based at least in part on receiving the request, a secondary node, for the UE, that is capable of using the requested combination of frequency bands; and means for transmitting, to the UE, information associated with the secondary node.
  • a base station for wireless communication may include memory and one or more processors operatively coupled to the memory.
  • the memory and the one or more processors may be configured to store information identifying a UE capability for a UE, wherein the base station is a first master node that serves the UE, and transmit, to the UE and based at least in part on storing the information identifying the UE capability, a command to transition from an active state to an inactive state; receive a request for the information identifying the UE capability from a second master node; and transmit, based at least in part on receiving the request, the information identifying the UE capability to the second master node.
  • a base station for wireless communication may include memory and one or more processors operatively coupled to the memory.
  • the memory and the one or more processors may be configured to receive, based at least in part on a UE transitioning from an inactive state to an active state, a request for the UE to communicatively connect with the base station as a first master node; transmit, to a second master node, a request for information identifying a UE capability for a UE, wherein the second master node served the UE prior to the UE transitioning from the inactive state to the active state; identify, based at least in part on the UE capability, a secondary node for the UE; and transmit, to the UE, information associated with the secondary node.
  • a base station for wireless communication may include memory and one or more processors operatively coupled to the memory.
  • the memory and the one or more processors may be configured to receive, based at least in part on a UE transitioning from an inactive state or an idle state to an active state, a request for the UE to communicatively connect with the base station as a first master node, wherein the request indicates a requested combination of frequency bands for the UE, wherein the requested combination of frequency bands is included in a plurality of candidate combinations of frequency bands indicated, to the UE, by a second master node, wherein the second master node served the UE prior to the UE transitioning from the inactive state or the idle state to the active state; identify, based at least in part on receiving the request, a secondary node, for the UE, that is capable of using the requested combination of frequency bands; and transmit, to the UE, information associated with the secondary node.
  • a method of wireless communication may include storing information identifying a UE capability for a UE, wherein the base station is a first master node that serves the UE, and transmitting, to the UE and based at least in part on storing the information identifying the UE capability, a command to transition from an active state to an inactive state; receiving a request for the information identifying the UE capability from a second master node; and transmitting, based at least in part on receiving the request, the information identifying the UE capability to the second master node.
  • a non-transitory computer-readable medium may store one or more instructions for wireless communication.
  • the one or more instructions when executed by one or more processors of a base station, may cause the one or more processors to: store information identifying a UE capability for a UE, wherein the base station is a first master node that serves the UE, and transmit, to the UE and based at least in part on storing the information identifying the UE capability, a command to transition from an active state to an inactive state; receive a request for the information identifying the UE capability from a second master node; and transmit, based at least in part on receiving the request, the information identifying the UE capability to the second master node.
  • a non-transitory computer-readable medium may store one or more instructions for wireless communication.
  • the one or more instructions when executed by one or more processors of a base station, may cause the one or more processors to: receive, based at least in part on a UE transitioning from an inactive state to an active state, a request for the UE to communicatively connect with the base station as a first master node; transmit, to a second master node, a request for information identifying a UE capability for a UE, wherein the second master node served the UE prior to the UE transitioning from the inactive state to the active state; identify, based at least in part on the UE capability, a secondary node for the UE; and transmit, to the UE, information associated with the secondary node.
  • a non-transitory computer-readable medium may store one or more instructions for wireless communication.
  • the one or more instructions when executed by one or more processors of a base station, may cause the one or more processors to: receive, based at least in part on a UE transitioning from an inactive state or an idle state to an active state, a request for the UE to communicatively connect with the base station as a first master node, wherein the request indicates a requested combination of frequency bands for the UE, wherein the requested combination of frequency bands is included in a plurality of candidate combinations of frequency bands indicated, to the UE, by a second master node, wherein the second master node served the UE prior to the UE transitioning from the inactive state or the idle state to the active state; identify, based at least in part on receiving the request, a secondary node, for the UE, that is capable of using the requested combination of frequency bands; and transmit, to the UE, information associated with the secondary node.
  • an apparatus for wireless communication may include means for receiving, from a first master node serving the apparatus, a communication that includes a command to transition from an active state to an inactive state or an idle state, wherein the communication includes an indication of one or more candidate frequency band combinations; means for transmitting, based at least in part on transitioning from the inactive state or the idle state to the active state, a request to communicatively connect with a second master node, wherein the request includes an indication of a requested frequency band combination of the one or more candidate frequency band combinations; and means for receiving, from the second master node, information associated with a secondary node, for the apparatus, that is capable of using the requested frequency band combination.
  • an apparatus for wireless communication may include means for storing information identifying a UE capability for a UE, wherein the apparatus is a first master node that serves the UE, and means for transmitting, to the UE and based at least in part on storing the information identifying the UE capability, a command to transition from an active state to an inactive state; means for receiving a request for the information identifying the UE capability from a second master node; and means for transmitting, based at least in part on receiving the request, the information identifying the UE capability to the second master node.
  • an apparatus for wireless communication may include means for receiving, based at least in part on a UE transitioning from an inactive state to an active state, a request for the UE to communicatively connect with the apparatus as a first master node; means for transmitting, to a second master node, a request for information identifying a UE capability for a UE, wherein the second master node served the UE prior to the UE transitioning from the inactive state to the active state; means for identifying, based at least in part on the UE capability, a secondary node for the UE; and means for transmitting, to the UE, information associated with the secondary node.
  • a non-transitory computer-readable medium may store one or more instructions for wireless communication.
  • the one or more instructions when executed by one or more processors of a base station, may cause the one or more processors to: receive, from a first master node serving the UE, a communication that includes a command to transition from an active state to an inactive state or an idle state, wherein the communication includes an indication of one or more candidate frequency band combinations; transmit, based at least in part on transitioning from the inactive state or the idle state to the active state, a request to communicatively connect with a second master node, wherein the request includes an indication of a requested frequency band combination of the one or more candidate frequency band combinations; and receive, from the second master node, information associated with a secondary node, for the UE, that is capable of using the requested frequency band combination.
  • Fig. 1 is a block diagram conceptually illustrating an example of a wireless communication network, in accordance with various aspects of the present disclosure.
  • Fig. 2 is a block diagram conceptually illustrating an example of a base station (BS) in communication with a user equipment (UE) in a wireless communication network, in accordance with various aspects of the present disclosure.
  • BS base station
  • UE user equipment
  • Fig. 3 illustrates an example of a wireless network in which a UE may support additional communication states, in accordance with various aspects of the present disclosure.
  • Figs. 4-7 are diagrams illustrating examples of storing band combination configurations for UE connection resume, in accordance with various aspects of the present disclosure.
  • Fig. 8 is a diagram illustrating an example process performed, for example, by a UE, in accordance with various aspects of the present disclosure.
  • Fig. 9-11 are diagrams illustrating example processes performed, for example, by a BS, in accordance with various aspects of the present disclosure.
  • Figs. 12-14 are conceptual data flow diagrams illustrating data flows between different modules/means/components in example apparatuses, in accordance with various aspects of the present disclosure.
  • Fig. 1 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced.
  • the wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network.
  • the wireless network 100 may include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities.
  • a BS is an entity that communicates with user equipment (UEs) and may also be referred to as a base station, a NR BS, a Node B, a gNB, a 5G node B (NB) , an access point, a transmit receive point (TRP) , and/or the like.
  • Each BS may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a BS and/or a BS subsystem serving this coverage area, depending on the context in which the term is used.
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having association with the femto cell (e.g., UEs in a closed subscriber group (CSG) ) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • a BS 110a may be a macro BS for a macro cell 102a
  • a BS 110b may be a pico BS for a pico cell 102b
  • a BS 110c may be a femto BS for a femto cell 102c.
  • a BS may support one or multiple (e.g., three) cells.
  • eNB base station
  • NR BS NR BS
  • gNB gNode B
  • AP AP
  • node B node B
  • 5G NB 5G NB
  • cell may be used interchangeably herein.
  • a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS.
  • the BSs may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and/or the like using any suitable transport network.
  • Wireless network 100 may also include relay stations.
  • a relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS) .
  • a relay station may also be a UE that can relay transmissions for other UEs.
  • a relay station 110d may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d.
  • a relay station may also be referred to as a relay BS, a relay base station, a relay, and/or the like.
  • Wireless network 100 may be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/or the like. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100.
  • macro BSs may have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 Watts) .
  • a network controller 130 may couple to a set of BSs and may provide coordination and control for these BSs.
  • Network controller 130 may communicate with the BSs via a backhaul.
  • the BSs may also communicate with one another, e.g., directly or indirectly via a wireless or wireline backhaul.
  • UEs 120 may be dispersed throughout wireless network 100, and each UE may be stationary or mobile.
  • a UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, and/or the like.
  • a UE may be a cellular phone (e.g., a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet) ) , an entertainment device (e.g., a music or video device, or a satellite radio) , a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.
  • PDA personal digital assistant
  • WLL wireless local loop
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, and/or the like, that may communicate with a base station, another device (e.g., remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • Some UEs may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband internet of things) devices.
  • Some UEs may be considered a Customer Premises Equipment (CPE) .
  • UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, and/or the like.
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular RAT and may operate on one or more frequencies.
  • a RAT may also be referred to as a radio technology, an air interface, and/or the like.
  • a frequency may also be referred to as a carrier, a frequency channel, and/or the like.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • NR or 5G RAT networks may be deployed.
  • two or more UEs 120 may communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with one another) .
  • the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, and/or the like) , a mesh network, and/or the like.
  • V2X vehicle-to-everything
  • the UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station 110.
  • Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.
  • Fig. 2 shows a block diagram of a design 200 of base station 110 and UE 120, which may be one of the base stations and one of the UEs in Fig. 1.
  • Base station 110 may be equipped with T antennas 234a through 234t
  • UE 120 may be equipped with R antennas 252a through 252r, where in general T ⁇ 1 and R ⁇ 1.
  • a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS (s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and/or the like) and control information (e.g., CQI requests, grants, upper layer signaling, and/or the like) and provide overhead symbols and control symbols.
  • MCS modulation and coding schemes
  • Transmit processor 220 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS) ) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS) ) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
  • TX transmit
  • MIMO multiple-input multiple-output
  • Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
  • Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.
  • the synchronization signals can be generated with location encoding to convey additional information.
  • antennas 252a through 252r may receive the downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples.
  • Each demodulator 254 may further process the input samples (e.g., for OFDM and/or the like) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • a receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280.
  • a channel processor may determine reference signal received power (RSRP) , received signal strength indicator (RSSI) , reference signal received quality (RSRQ) , channel quality indicator (CQI) , and/or the like.
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • RSRQ reference signal received quality
  • CQI channel quality indicator
  • one or more components of UE 120 may be included in a housing.
  • a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, and/or the like) , and transmitted to base station 110.
  • modulators 254a through 254r e.g., for DFT-s-OFDM, CP-OFDM, and/or the like
  • the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120.
  • Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller/processor 240.
  • Base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244.
  • Network controller 130 may include communication unit 294, controller/processor 290, and memory 292.
  • Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with storing band combination configurations for UE connection resume, as described in more detail elsewhere herein.
  • controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 700 of Fig. 7, process 800 of Fig. 8, process 900 of Fig. 9, process 1000 of Fig. 10, and/or other processes as described herein.
  • Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively.
  • a scheduler 246 may schedule UEs for data transmission on the downlink and/or uplink.
  • UE 120 may include means for receiving, from a first master node serving the UE 120, a communication that includes a command to transition from an active state to an inactive state or an idle state, wherein the communication includes an indication of one or more candidate frequency band combinations; means for transmitting, based at least in part on transitioning from the inactive state or the idle state to the active state, a request to communicatively connect with a second master node, wherein the request includes an indication of a requested frequency band combination of the one or more candidate frequency band combinations; means for receiving, from the second master node, information associated with a secondary node, for the UE 120, that is capable of using the requested frequency band combination, and/or the like.
  • such means may include one or more components of UE 120 described in connection with Fig. 2.
  • base station 110 may include means for storing information identifying a UE capability for a UE 120, wherein the base station is a first master node that serves the UE 120; means for transmitting, to the UE 120 and based at least in part on storing the information identifying the UE capability, a command to transition from an active state to an inactive state; means for receiving a request for the information identifying the UE capability from a second master node; means for transmitting, based at least in part on receiving the request, the information identifying the UE capability to the second master node, and/or the like.
  • base station 110 may include means for receiving, based at least in part on a UE 120 transitioning from an inactive state to an active state, a request for the UE 120 to communicatively connect with the base station 110 as a first master node; means for transmitting, to a second master node, a request for information identifying a UE capability for the UE 120, wherein the second master node served the UE 120 prior to the UE 120 transitioning from the inactive state to the active state; means for identifying, based at least in part on the UE capability, a secondary node for the UE 120; means for transmitting, to the UE 120, information associated with the secondary node, and/or the like.
  • base station 110 may include means for receiving, based at least in part on a UE 120 transitioning from an inactive state or an idle state to an active state, a request for the UE 120 to communicatively connect with the base station 110 as a first master node, wherein the request indicates a requested combination of frequency bands for the UE 120, wherein the requested combination of frequency bands is included in a plurality of candidate combinations of frequency bands indicated, to the UE 120, by a second master node, and wherein the second master node served the UE 120 prior to the UE 120 transitioning from the inactive state or the idle state to the active state; means for identifying, based at least in part on receiving the request, a secondary node, for the UE 120, that is capable of using the requested combination of frequency bands; means for transmitting, to the UE 120, information associated with the secondary node, and/or the like.
  • such means may include one or more components of base station 110 described in connection with Fig. 2.
  • Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.
  • a UE may communicate with a plurality of base stations in a dual connectivity configuration.
  • the UE may simultaneously communicate with different base stations, where a first base station (referred to as a master node) may provide a first cell (referred to as a primary cell (PCell) ) and a second base station (referred to as a secondary node) may provide a second cell (referred to as a secondary cell (SCell) ) .
  • the first cell and the second cell may be associated with the same radio access technology (RAT) or different RATs (e.g., a 5G/NR RAT, an LTE RAT, and/or the like) .
  • RAT radio access technology
  • Examples of dual connectivity configurations involving different RATs include an evolved universal terrestrial radio access (E-UTRA) new radio (NR) -dual connectivity (EN-DC) , NR E-UTRA-DC (NE-DC) , NR NR-DC, LTE-DC, or may include other types of multi-radio access technology-dual connectivity (MR-DC) deployments based on the RATs that are used by the respective nodes.
  • E-UTRA evolved universal terrestrial radio access
  • NR new radio
  • NE-DC NR E-UTRA-DC
  • LTE-DC Long Term Evolution-DC
  • MR-DC multi-radio access technology-dual connectivity
  • a UE may not be continuously communicating with one or more base stations, and the UE may accordingly operate in various communication states, for example, to save power when not transmitting or receiving data.
  • the UE may operate in an idle communication state (e.g., a radio resource control (RRC) idle state) , where the UE may be “on standby” and thus may not be assigned to a particular serving base station.
  • the UE may operate in a connected communication state (e.g., an RRC active state) where the UE may be “active” and transmit data to/receive data from a serving cell (e.g., a PCell, an SCell, and/or the like) .
  • the UE may transition from the RRC idle state to the RRC active state, and vice versa, based at least in part on activity associated with the UE, based at least in part on receiving a command from a base station, and/or the like.
  • Fig. 3 illustrates an example 300 of a wireless network (e.g., wireless network 100) in which a UE (e.g., UE 120) may support additional communication states.
  • the UE may be communicatively connected with one or more base stations in the wireless network.
  • the UE may be connected to the one or more base stations in a dual connectivity configuration.
  • a first base station may serve the UE as a master node and a second base station may serve the UE as a secondary node.
  • the UE may support a connected communication state (e.g., an RRC active state 302) , an idle communication state (e.g., an RRC idle state 304) , an inactive communication state (e.g., an RRC inactive state 306) , and/or the like.
  • RRC inactive state 306 may functionally reside between RRC active state 302 and RRC idle state 304.
  • the UE may transition between different states based at least in part on various commands and/or communications received from the one or more base stations. For example, the UE may transition from RRC active state 302 or RRC inactive state 306 to RRC idle state 304 based at least in part on receiving an RRCRelease communication. As another example, the UE may transition from RRC active state 302 to RRC inactive state 306 based at least in part on receiving an RRCRelease with suspendConfig communication. As another example, the UE may transition from RRC idle state 304 to RRC active state 302 based at least in part on receiving an RRCSetupRequest communication. As another example, the UE may transition from RRC inactive state 306 to RRC active state 302 based at least in part on receiving an RRCResumeRequest communication.
  • the UE and/or the one or more base stations may store a UE context (e.g., an access stratum (AS) context, higher-layer configurations, and/or the like) .
  • a UE context e.g., an access stratum (AS) context, higher-layer configurations, and/or the like.
  • AS access stratum
  • the UE may communicatively connect with a new master node when transitioning from RRC idle state 304 or RRC inactive state 306 to RRC active state 302 (e.g., a master node that is different from the last serving master node when the UE transitioned to RRC idle state 304 or RRC inactive state 306) .
  • the new master node may be responsible for identifying a secondary node for the UE in the dual connectivity configuration.
  • the new master node may be unaware of the UE’s capability to operate on various frequency bands and/or frequency band combinations. As a result, the new master node may select a secondary node that operates on a frequency band that the UE is unable to support, or that operates on a frequency band that the UE is unable to support in combination with the frequency band on which the new master node operates.
  • This may cause delays in connection establishment between the UE and a secondary node, may cause the UE to waste radio, processing, and/or memory resources on attempting to establish a connection with a secondary node that operates on a frequency band that the UE may not support, and/or the like.
  • a base station and/or a UE may store, prior to the UE transitioning from an active state to an inactive state or idle state, information identifying one or more candidate frequency band combinations that the UE is capable of using (which may be included among other information as a UE capability) .
  • the new master node may select a secondary node that is capable of using one or more frequency bands indicated in the information identifying the one or more candidate frequency band combinations, which reduces delays in connection establishment between the UE and a secondary node and decreases the consumption of radio, processing, and/or memory resources on attempting to establish a connection with a secondary node that operates on a frequency band that the UE may not support.
  • the new master node may obtain the information identifying the one or more candidate frequency band combinations by transmitting a UE Context Retrieve Request communication to the last serving master node. If the UE is storing the information identifying the one or more candidate frequency band combinations, the UE may transmit information identifying a requested frequency band combination to the new master node when establishing a connection with the new master node.
  • Fig. 4 is a diagram illustrating an example 400 of storing band combination configurations for UE connection resume, in accordance with various aspects of the present disclosure.
  • example 400 may include communications between a UE (e.g., UE 120) and a plurality of nodes (e.g., base stations 110) included in a wireless network (e.g., wireless network 100) .
  • the UE and one or more nodes, of the plurality of nodes, may be communicatively connected in a dual connectivity configuration.
  • the UE may be communicatively connected with a master node (e.g., MN 1) and a secondary node (SN) .
  • the master node and/or the secondary node may be included in a master cell group (MCG) associated with the UE or a secondary cell group (SCG) associated with the UE.
  • MCG master cell group
  • SCG secondary cell group
  • the master node serving the UE may store information identifying a UE capability associated with the UE.
  • MN 1 may store the information identifying the UE capability based at least in part on determining to transmit, to the UE, a command to transition from an active state (e.g., an RRC active state, an RRC connected state, and/or the like) to an inactive state (e.g., an RRC inactive state) or an idle state (e.g., an RRC idle state) .
  • the UE and/or MN 1 may also store information identifying a UE context associated with the UE.
  • the UE capability may include information identifying the UE (e.g., an identifier associated with the UE) , information identifying whether the UE is capable of operating in a dual connectivity configuration, information identifying one or more candidate frequency band combinations, and/or the like.
  • the one or more candidate frequency band combinations may include frequency band combinations for the dual connectivity configuration associated with the UE. That is, each frequency band combination may include one or more frequency bands for communicating with a master node and one or more frequency bands for communicating with a secondary node.
  • MN 1 may identify the one or more candidate frequency band combinations to include frequency bands that the UE is capable of using, that the UE is permitted to use, and/or the like.
  • MN 1 may receive (e.g., from the UE, from one or more other components included in the wireless network, and/or the like) an indication of a frequency range in which the UE is capable of operating (e.g., based at least in part on hardware and/or software capabilities) and/or permitted to operate (e.g., based at least in part on a subscription of the UE) .
  • MN 1 may transmit, to the UE and after storing the information identifying the UE capability, a command to transition from the active state to the idle state or inactive state.
  • the command may be included in a signaling communication, such as an RRCRelease communication (e.g., to cause the UE to transition to the idle state) , an RRCRelease with suspendConfig (e.g., to cause the UE to transition to the inactive state) , and/or the like.
  • the UE may receive the command and may transition to the idle state by releasing an RRC configuration, a UE context, one or more radio bearers, and/or the like associated with the connections with MN 1 and any secondary nodes, or may transition to the inactive state by releasing the RRC configuration and radio bearers but retaining the UE context.
  • the UE may subsequently transition back into the active state.
  • the UE may transition back into the active state based at least in part on determining that the UE has data and/or control information to transmit and/or receive, based at least in part on detecting a wake-up signal, based at least in part on receiving a command to transition to the active state, and/or the like.
  • the UE may search for a master node on which to initiate a random access channel (RACH) procedure in order to establish a connection.
  • RACH random access channel
  • the UE may transmit a RACH preamble in a Msg1 communication (e.g., for a four-step RACH procedure) or a MsgA communication (e.g., for a two-step RACH procedure) .
  • the master node may respond by transmitting a random access response (RAR) a Msg 2 communication.
  • RAR random access response
  • the UE may respond to the Msg2 communication with an RRCResumeRequest (e.g., if the UE is transitioning from an inactive state) or an RRCSetupRequest (e.g., if the UE is transitioning from an idle state) in a Msg3 communication (e.g., for a two-step RACH procedure) .
  • the RRCResumeRequest or RRCSetupRequest may be included in the MsgA communication if the UE is performing a two-step RACH procedure.
  • the UE may initiate the RACH procedure on a new master node (MN 2) (e.g., a master node that is different from the last serving master node or the master node that was serving the UE prior to the UE transitioning to the inactive state or idle state) .
  • MN 2 a new master node that is different from the last serving master node or the master node that was serving the UE prior to the UE transitioning to the inactive state or idle state
  • the UE may select a new master node based at least in part on no longer being located within the coverage area of a cell associated with the last serving master node (e.g., MN 1) , based at least in part on identifying a master node with better cell coverage, and/or the like.
  • MN 2 may transmit a UE Context Retrieve Request communication (or another type of communication) to MN 1 during the RACH procedure.
  • MN 2 may use the UE Context Retrieve Request to obtain the information identifying the UE capability and UE context stored by MN 1 so that MN 2 can use the UE capability and UE context to identify a secondary node for the dual connectivity configuration associated with the UE.
  • the UE Context Retrieve Request communication may include information identifying the UE, such as an identifier associated with the UE.
  • MN 1 may receive the UE Context Retrieve Request communication from MN 2 and may transmit, to MN 2, a UE Context Retrieve Response communication (or another type of communication) .
  • the UE Context Retrieve Response communication may include information identifying the UE capability and UE context associated with the UE.
  • MN 1 may use the identifier, associated with the UE and indicated in the UE Context Retrieve Request communication, to identify the information identifying the UE capability and UE context stored at MN 1.
  • MN 2 may receive the UE Context Retrieve Response communication and may use the UE capability and UE context to identify a secondary node for the dual connectivity configuration associated with the UE.
  • MN 2 may identify the one or more candidate frequency band combinations indicated in the UE capability and may identify a secondary node based at least in part on the one or more candidate frequency band combinations. For example, MN 2 may determine that the UE is located within respective coverage areas associated with one or more candidate secondary nodes, may determine whether a candidate secondary node is capable of operating on any of the frequency bands included in the one or more candidate frequency band combinations, and may identify a secondary node that is capable of operating on any of the frequency bands included in the one or more candidate frequency band combinations.
  • the identified secondary node may be capable of providing an SCell that may be included in an MCG or an SCG associated with the UE.
  • MN 2 may transmit, to the identified secondary node, an SN Activation Request communication to activate the secondary node in the dual connectivity configuration associated with the UE.
  • the secondary node may respond to the SN Activation Request communication with an SN Activation Acknowledgement (ACK) if the secondary node is successfully activated.
  • ACK SN Activation Acknowledgement
  • MN 2 may complete the master node RACH procedure by transmitting a Msg4 communication (e.g., in a four-step RACH procedure) or a MsgB communication (e.g., in a two-step RACH procedure) to the UE.
  • the Msg4 communication or MsgB communication may include an RRCSetup command (e.g., if the UE is transitioning from an idle state) or an RRCResume command (e.g., if the UE is transitioning from an inactive state) .
  • the Msg4 communication or MsgB communication may include information associated with the secondary node.
  • the information associated with the secondary node may include information identifying an SCell configuration for the secondary node (e.g., a cell identifier and/or another type of identifier associated with the secondary node, the frequency band on which the secondary node operates, and/or the like) , information identifying a secondary cell state associated with the secondary node (e.g., an indication of whether the secondary node is activated or deactivated, which may be based at least in part on whether MN 2 received an SN Activation ACK communication from the secondary node) , and/or the like.
  • an SCell configuration for the secondary node e.g., a cell identifier and/or another type of identifier associated with the secondary node, the frequency band on which the secondary node operates, and/or the like
  • information identifying a secondary cell state associated with the secondary node e.g., an indication of whether the secondary node is activate
  • the UE may perform a RACH procedure with the secondary node based at least in part on receiving the information associated with the secondary node. For example, the UE may use the secondary cell configuration to identify the secondary node and to transmit, on the frequency band associated with the secondary node, one or more RACH communications to the secondary node to initiate the RACH procedure.
  • MN 1 may store information identifying a UE capability associated with the UE such that, if the UE communicatively connects with a new master node (e.g., MN 2) when transitioning from the inactive state or idle state back into the active state, the new master node may select a secondary node that is capable of using one or more frequency bands indicated in the UE capability, which reduces delays in connection establishment between the UE and a secondary node and decreases the consumption of radio, processing, and/or memory resources on attempting to establish a connection with a secondary node that operates on a frequency band that the UE may not support.
  • a new master node e.g., MN 2
  • Fig. 4 is provided as an example. Other examples may differ from what is described with respect to Fig. 4.
  • Fig. 5 is a diagram illustrating an example 500 of storing band combination configurations for UE connection resume, in accordance with various aspects of the present disclosure.
  • example 500 may include communication between a UE (e.g., UE 120) and a plurality of nodes (e.g., base stations 110) included in a wireless network (e.g., wireless network 100) .
  • the UE and one or more nodes, of the plurality of nodes, may be communicatively connected in a dual connectivity configuration.
  • the UE may be communicatively connected with a master node (e.g., MN 1) and a secondary node (SN) .
  • the master node and/or the secondary node may be included in a master cell group (MCG) associated with the UE or a secondary cell group (SCG) associated with the UE.
  • MCG master cell group
  • SCG secondary cell group
  • the master node serving the UE may store information identifying a UE capability associated with the UE.
  • MN 1 may store the information identifying the UE capability based at least in part on determining to transmit, to the UE, a command to transition from an active state (e.g., an RRC active state, an RRC connected state, and/or the like) to an inactive state (e.g., an RRC inactive state) or an idle state (e.g., an RRC idle state) .
  • the UE and/or MN 1 may also store information identifying a UE context associated with the UE.
  • the UE capability may include information identifying the UE (e.g., an identifier associated with the UE) , information identifying whether the UE is capable of operating in a dual connectivity configuration, information identifying one or more candidate frequency band combinations, and/or the like.
  • the one or more candidate frequency band combinations may include frequency band combinations for the dual connectivity configuration associated with the UE. That is, each frequency band combination may include one or more frequency bands for communicating with a master node and one or more frequency bands for communicating with a secondary node.
  • MN 1 may identify the one or more candidate frequency band combinations to include frequency bands that the UE is capable of using, that the UE is permitted to use, and/or the like.
  • MN 1 may receive (e.g., from the UE, from one or more other components included in the wireless network, and/or the like) an indication of a frequency range in which the UE is capable of operating (e.g., based at least in part on hardware and/or software capabilities) and/or permitted to operate (e.g., based at least in part on a subscription of the UE) .
  • MN 1 may transmit, to the UE and after storing the information identifying the UE capability, a command to transition from the active state to the idle state or inactive state.
  • the command may be included in a signaling communication, such as an RRCRelease communication (e.g., to cause the UE to transition to the idle state) , an RRCRelease with suspendConfig (e.g., to cause the UE to transition to the inactive state) , and/or the like.
  • the UE may receive the command and may transition to the idle state by releasing an RRC configuration, a UE context, one or more radio bearers, and/or the like associated with the connections with MN 1 and any secondary nodes, or may transition to the inactive state by releasing the RRC configuration and radio bearers but retaining the UE context.
  • the UE may subsequently transition back into the active state.
  • the UE may transition back into the active state based at least in part on determining that the UE has data and/or control information to transmit and/or receive, based at least in part on detecting a wake-up signal, based at least in part on receiving a command to transition to the active state, and/or the like.
  • the UE may search for a master node on which to initiate a RACH procedure in order to establish a connection.
  • the UE may transmit a RACH preamble in a Msg1 communication (e.g., for a four-step RACH procedure) or a MsgA communication (e.g., for a two-step RACH procedure) .
  • the master node may respond by transmitting a random access response (RAR) a Msg 2 communication.
  • RAR random access response
  • the UE may respond to the Msg2 communication with an RRCResumeRequest (e.g., if the UE is transitioning from an inactive state) or an RRCSetupRequest (e.g., if the UE is transitioning from an idle state) in a Msg3 communication (e.g., for a two-step RACH procedure) .
  • the RRCResumeRequest or RRCSetupRequest may be included in the MsgA communication if the UE is performing a two-step RACH procedure.
  • the UE may initiate the RACH procedure on a new master node (MN 2) (e.g., a master node that is different from the last serving master node or the master node that was serving the UE prior to the UE transitioning to the inactive state or idle state) .
  • MN 2 a new master node that is different from the last serving master node or the master node that was serving the UE prior to the UE transitioning to the inactive state or idle state
  • the UE may select a new master node based at least in part on no longer being located within the coverage area of a cell associated with the last serving master node (e.g., MN 1) , based at least in part on identifying a master node with better cell coverage, and/or the like.
  • MN 2 may transmit a UE Context Retrieve Request communication (or another type of communication) to MN 1 during the RACH procedure.
  • MN 2 may use the UE Context Retrieve Request to obtain the information identifying the UE capability and UE context stored by MN 1 so that MN 2 can use the UE capability and UE context to identify a secondary node for the dual connectivity configuration associated with the UE.
  • the UE Context Retrieve Request communication may include information identifying the UE, such as an identifier associated with the UE.
  • MN 1 may receive the UE Context Retrieve Request communication from MN 2 and may transmit, to MN 2, a UE Context Retrieve Response communication (or another type of communication) .
  • the UE Context Retrieve Response communication may include information identifying the UE capability and UE context associated with the UE.
  • MN 1 may use the identifier, associated with the UE and indicated in the UE Context Retrieve Request communication, to identify the information identifying the UE capability and UE context stored at MN 1.
  • MN 2 may receive the UE Context Retrieve Response communication and may use the UE capability and UE context to identify a secondary node for the dual connectivity configuration associated with the UE.
  • MN 2 may identify the one or more candidate frequency band combinations indicated in the UE capability and may identify a secondary node based at least in part on the one or more candidate frequency band combinations. For example, MN 2 may determine that the UE is located within respective coverage areas associated with one or more candidate secondary nodes, may determine whether a candidate secondary node is capable of operating on any of the frequency bands included in the one or more candidate frequency band combinations, and may identify a secondary node that is capable of operating on one or more of the frequency bands included in the one or more candidate frequency band combinations.
  • the identified secondary node may be capable of providing an SCell that may be included in an MCG or an SCG associated with the UE.
  • MN 2 may transmit, to the identified secondary node, an SN Activation Request communication to activate the secondary node in the dual connectivity configuration associated with the UE.
  • the secondary node may respond to the SN Activation Request communication with an SN Activation Acknowledgement (ACK) if the secondary node is successfully activated.
  • ACK SN Activation Acknowledgement
  • MN 2 may complete the master node RACH procedure by transmitting a Msg4 communication (e.g., in a four-step RACH procedure) or a MsgB communication (e.g., in a two-step RACH procedure) to the UE.
  • the Msg4 communication or MsgB communication may include an RRCSetup command (e.g., if the UE is transitioning from an idle state) or an RRCResume command (e.g., if the UE is transitioning from an inactive state) .
  • MN 2 may transmit an RRCReconfiguration communication (or another type of signaling communication) to modify the RRC configuration of the UE.
  • the RRCReconfiguration communication may include an indication that the UE is to add the secondary node to the dual connectivity configuration associated with the UE.
  • the RRCReconfiguration communication may include information associated with the secondary node.
  • the information associated with the secondary node may include information identifying an SCell configuration for the secondary node (e.g., a cell identifier and/or another type of identifier associated with the secondary node, the frequency band on which the secondary node operates, and/or the like) , information identifying a secondary cell state associated with the secondary node (e.g., an indication of whether the secondary node is activated or deactivated, which may be based at least in part on whether MN 2 received an SN Activation ACK communication from the secondary node) , and/or the like.
  • an SCell configuration for the secondary node e.g., a cell identifier and/or another type of identifier associated with the secondary node, the frequency band on which the secondary node operates, and/or the like
  • information identifying a secondary cell state associated with the secondary node e.g., an indication of whether the secondary node is activated or deactivated
  • the UE may perform a RACH procedure with the secondary node based at least in part on receiving the information associated with the secondary node. For example, the UE may use the secondary cell configuration to identify the secondary node and to transmit, on the frequency band associated with the secondary node, one or more RACH communications to the secondary node to initiate the RACH procedure.
  • MN 1 may store information identifying a UE capability associated with the UE such that, if the UE communicatively connects with a new master node (e.g., MN 2) when transitioning from the inactive state or idle state back into the active state, the new master node may select a secondary node that is capable of using one or more frequency bands indicated in the UE capability, which reduces delays in connection establishment between the UE and a secondary node and decreases the consumption of radio, processing, and/or memory resources on attempting to establish a connection with a secondary node that operates on a frequency band that the UE may not support.
  • a new master node e.g., MN 2
  • Fig. 5 is provided as an example. Other examples may differ from what is described with respect to Fig. 5.
  • Fig. 6 is a diagram illustrating an example 600 of storing band combination configurations for UE connection resume, in accordance with various aspects of the present disclosure.
  • example 600 may include communication between a UE (e.g., UE 120) and a plurality of nodes (e.g., base stations 110) included in a wireless network (e.g., wireless network 100) .
  • the UE and one or more nodes, of the plurality of nodes, may be communicatively connected in a dual connectivity configuration.
  • the UE may be communicatively connected with a master node (e.g., MN 1) and a secondary node (SN) .
  • the master node and/or the secondary node may be included in a master cell group (MCG) associated with the UE or a secondary cell group (SCG) associated with the UE.
  • MCG master cell group
  • SCG secondary cell group
  • the master node serving the UE may transmit, to the UE, a command to transition from an active state (e.g., an RRC active state, an RRC connected state, and/or the like) to an inactive state (e.g., an RRC inactive state) or an idle state (e.g., an RRC idle state) .
  • the command may be included in a signaling communication, such as an RRCRelease communication (e.g., to cause the UE to transition to the idle state) , an RRCRelease with suspendConfig (e.g., to cause the UE to transition to the inactive state) , and/or the like.
  • the signaling communication may further indicate one or more candidate frequency band combinations for the dual connectivity configuration associated with the UE.
  • Each frequency band combination may include one or more frequency bands for communicating with a master node and one or more frequency bands for communicating with a secondary node.
  • MN 1 may select the one or more candidate frequency band combinations based at least in part on the frequency bands configured in the wireless network.
  • the one or more candidate frequency band combinations may include all or a subset of frequency bands that are configured in the wireless network.
  • the UE may receive the command and may transition to the idle state or the inactive state.
  • the UE may transition to the idle state by releasing an RRC configuration, a UE context, one or more radio bearers, and/or the like associated with the connections with MN 1 and any secondary nodes.
  • the UE may transition to the inactive state by releasing the RRC configuration and radio bearers associated with the connections with MN 1 and any secondary nodes, but may retain a UE context associated with MN 1 and any secondary nodes.
  • the UE may store information identifying the one or more candidate frequency band combinations indicated in the signaling communication that included the command. After transitioning to the idle state or inactive state, the UE may subsequently transition back into the active state. In some aspects, the UE may transition back into the active state based at least in part on determining that the UE has data and/or control information to transmit and/or receive, based at least in part on detecting a wake-up signal, based at least in part on receiving a command to transition to the active state, and/or the like.
  • the UE may search for a master node on which to initiate a random access channel (RACH) procedure in order to establish a connection.
  • RACH random access channel
  • the UE may transmit a RACH preamble in a Msg1 communication (e.g., for a four-step RACH procedure) or a MsgA communication (e.g., for a two-step RACH procedure) .
  • the master node may respond by transmitting a random access response (RAR) in a Msg 2 communication.
  • RAR random access response
  • the UE may response to the Msg2 communication with an RRCResumeRequest (e.g., if the UE is transitioning from an inactive state) or an RRCSetupRequest (e.g., if the UE is transitioning from an idle state) in a Msg3 communication (e.g., for a two-step RACH procedure) .
  • the RRCResumeRequest or RRCSetupRequest may be included in the MsgA communication if the UE is performing a two-step RACH procedure.
  • the UE may initiate the RACH procedure on a new master node (MN 2) (e.g., a master node that is different from the last serving master node or the master node that was serving the UE prior to the UE transitioning to the inactive state or idle state) .
  • MN 2 a new master node that is different from the last serving master node or the master node that was serving the UE prior to the UE transitioning to the inactive state or idle state
  • the UE may select a new master node based at least in part on no longer being located within the coverage area of a cell associated with the last serving master node (e.g., MN 1) based at least in part on identifying a master node with better cell coverage, and/or the like.
  • the UE may indicate, to MN 2, a requested frequency band combination for identifying a secondary node for the dual connectivity configuration associated with the UE.
  • the UE may indicate the requested frequency band to MN 2 in one or more RACH communications during the master node RACH procedure (e.g., in a Msg1 communication, a Msg 3 communication, a MsgA communication, and/or the like) .
  • the UE may indicate the requested frequency band combination by including, in the one or more RACH communications, a frequency band combination index associated with the requested frequency band combination.
  • the UE may indicate a plurality of requested frequency band combinations in the one or more RACH communications.
  • the plurality of requested frequency band combinations may include a primary (or preferred) frequency band combination and one or more secondary frequency band combinations that MN 2 may use to identify a secondary node if no secondary node candidates satisfy the primary frequency band combination.
  • the UE may identify the requested frequency band combination among the one or more candidate frequency band combinations. For example, the UE may search the information identifying the one or more candidate frequency band combinations for a frequency band combination that the UE is capable of using and permitted to use based at least in part on a frequency range in which the UE is capable of operating (e.g., based at least in part on hardware and/or software capabilities) and/or permitted to operate (e.g., based at least in part on a subscription of the UE) .
  • a frequency range in which the UE is capable of operating e.g., based at least in part on hardware and/or software capabilities
  • permitted to operate e.g., based at least in part on a subscription of the UE
  • MN 2 may receive the one or more RACH communications and may use the requested frequency band combination to identify a secondary node for the dual connectivity configuration associated with the UE. For example, MN 2 may determine that the UE is located within respective coverage areas associated with one or more candidate secondary nodes, may determine whether a candidate secondary node is capable of operating on any of the frequency bands included in the requested frequency band combination, and may identify a secondary node that is capable of operating on any of the frequency bands included in the requested frequency band combination. In some aspects, the identified secondary node may be capable of providing an SCell that may be included in an MCG or an SCG associated with the UE.
  • MN 2 may transmit, to the identified secondary node, an SN Activation Request communication to activate the secondary node in the dual connectivity configuration associated with the UE.
  • the secondary node may respond to the SN Activation Request communication with an SN Activation Acknowledgement (ACK) if the secondary node is successfully activated.
  • ACK SN Activation Acknowledgement
  • MN 2 may complete the master node RACH procedure by transmitting a Msg4 communication (e.g., in a four-step RACH procedure) or a MsgB communication (e.g., in a two-step RACH procedure) to the UE.
  • the Msg4 communication or MsgB communication may include an RRCSetup command (e.g., if the UE is transitioning from an idle state) or an RRCResume command (e.g., if the UE is transitioning from an inactive state) .
  • the Msg4 communication or MsgB communication may include information associated with the secondary node.
  • the information associated with the secondary node may include information identifying an SCell configuration for the secondary node (e.g., a cell identifier and/or another type of identifier associated with the secondary node, the frequency band on which the secondary node operates, and/or the like) , information identifying a secondary cell state associated with the secondary node (e.g., an indication of whether the secondary node is activated or deactivated, which may be based at least in part on whether MN 2 received an SN Activation ACK communication from the secondary node) , and/or the like.
  • an SCell configuration for the secondary node e.g., a cell identifier and/or another type of identifier associated with the secondary node, the frequency band on which the secondary node operates, and/or the like
  • information identifying a secondary cell state associated with the secondary node e.g., an indication of whether the secondary node is activate
  • the UE may perform a RACH procedure with the secondary node based at least in part on receiving the information associated with the secondary node. For example, the UE may use the secondary cell configuration to identify the secondary node and to transmit, on the frequency band associated with the secondary node, one or more RACH communications to the secondary node to initiate the RACH procedure.
  • MN 1 may provide an indication of one or more candidate frequency band combinations to the UE such that, if the UE communicatively connects with a new master node (e.g., MN 2) when transitioning from the inactive state or idle state back into the active state, the UE may provide a requested frequency band combination to the new master node so that the new master node may select a secondary node that is capable of using one or more frequency bands included in the requested frequency band combination.
  • a new master node e.g., MN 2
  • MN 2 new master node
  • This reduces delays in connection establishment between the UE and a secondary node and decreases the consumption of radio, processing, and/or memory resources on attempting to establish a connection with a secondary node that operates on a frequency band that the UE may not support.
  • Fig. 6 is provided as an example. Other examples may differ from what is described with respect to Fig. 6.
  • Fig. 7 is a diagram illustrating an example 700 of storing band combination configurations for UE connection resume, in accordance with various aspects of the present disclosure.
  • example 700 may include communication between a UE (e.g., UE 120) and a plurality of nodes (e.g., base stations 110) included in a wireless network (e.g., wireless network 100) .
  • the UE and one or more nodes, of the plurality of nodes, may be communicatively connected in a dual connectivity configuration.
  • the UE may be communicatively connected with a master node (e.g., MN 1) and a secondary node (SN) .
  • the master node and/or the secondary node may be included in a master cell group (MCG) associated with the UE or a secondary cell group (SCG) associated with the UE.
  • MCG master cell group
  • SCG secondary cell group
  • the master node serving the UE may transmit, to the UE, a command to transition from an active state (e.g., an RRC active state, an RRC connected state, and/or the like) to an inactive state (e.g., an RRC inactive state) or an idle state (e.g., an RRC idle state) .
  • the command may be included in a signaling communication, such as an RRCRelease communication (e.g., to cause the UE to transition to the idle state) , an RRCRelease with suspendConfig (e.g., to cause the UE to transition to the inactive state) , and/or the like.
  • the signaling communication may further indicate one or more candidate frequency band combinations for the dual connectivity configuration associated with the UE.
  • Each frequency band combination may include one or more frequency bands for communicating with a master node and one or more frequency bands for communicating with a secondary node.
  • MN 1 may select the one or more candidate frequency band combinations based at least in part on the frequency bands configured in the wireless network.
  • the one or more candidate frequency band combinations may include all or a subset of frequency bands that are configured in the wireless network.
  • the UE may receive the command and may transition to the idle state or the inactive state.
  • the UE may transition to the idle state by releasing an RRC configuration, a UE context, one or more radio bearers, and/or the like associated with the connections with MN 1 and any secondary nodes.
  • the UE may transition to the inactive state by releasing the RRC configuration and radio bearers associated with the connections with MN 1 and any secondary nodes, but may retain a UE context associated with MN 1 and any secondary nodes.
  • the UE may store information identifying the one or more candidate frequency band combinations indicated in the signaling communication that included the command. After transitioning to the idle state or inactive state, the UE may subsequently transition back into the active state. In some aspects, the UE may transition back into the active state based at least in part on determining that the UE has data and/or control information to transmit and/or receive, based at least in part on detecting a wake-up signal, based at least in part on receiving a command to transition to the active state, and/or the like.
  • the UE may search for a master node on which to initiate a random access channel (RACH) procedure in order to establish a connection.
  • RACH random access channel
  • the UE may transmit a RACH preamble in a Msg1 communication (e.g., for a four-step RACH procedure) or a MsgA communication (e.g., for a two-step RACH procedure) .
  • the master node may respond by transmitting a random access response (RAR) a Msg 2 communication.
  • RAR random access response
  • the UE may respond to the Msg2 communication with an RRCResumeRequest (e.g., if the UE is transitioning from an inactive state) or an RRCSetupRequest (e.g., if the UE is transitioning from an idle state) in a Msg3 communication (e.g., for a two-step RACH procedure) .
  • the RRCResumeRequest or RRCSetupRequest may be included in the MsgA communication if the UE is performing a two-step RACH procedure.
  • the UE may initiate the RACH procedure on a new master node (MN 2) (e.g., a master node that is different from the last serving master node or the master node that was serving the UE prior to the UE transitioning to the inactive state or idle state) .
  • MN 2 a new master node that is different from the last serving master node or the master node that was serving the UE prior to the UE transitioning to the inactive state or idle state
  • the UE may select a new master node based at least in part on no longer being located within the coverage area of a cell associated with the last serving master node (e.g., MN 1) , based at least in part on identifying a master node with better cell coverage, and/or the like.
  • the UE may indicate, to MN 2, a requested frequency band combination for identifying a secondary node for the dual connectivity configuration associated with the UE.
  • the UE may indicate the requested frequency band to MN 2 in one or more RACH communications during the master node RACH procedure (e.g., in a Msg1 communication, a Msg 3 communication, a MsgA communication, and/or the like) .
  • the UE may indicate the requested frequency band combination by including, in the one or more RACH communications, a frequency band combination index associated with the requested frequency band combination.
  • the UE may indicate a plurality of requested frequency band combinations in the one or more RACH communications.
  • the plurality of requested frequency band combinations may include a primary (or preferred) frequency band combination and one or more secondary frequency band combinations that MN 2 may use to identify a secondary node if no secondary node candidates satisfy the primary frequency band combination.
  • the UE may identify the requested frequency band combination among the one or more candidate frequency band combinations. For example, the UE may search the information identifying the one or more candidate frequency band combinations for a frequency band combination that the UE is capable of using and permitted to use based at least in part on a frequency range in which the UE is capable of operating (e.g., based at least in part on hardware and/or software capabilities) and/or permitted to operate (e.g., based at least in part on a subscription of the UE) .
  • a frequency range in which the UE is capable of operating e.g., based at least in part on hardware and/or software capabilities
  • permitted to operate e.g., based at least in part on a subscription of the UE
  • MN 2 may receive the one or more RACH communications and may use the requested frequency band combination to identify a secondary node for the dual connectivity configuration associated with the UE. For example, MN 2 may determine that the UE is located within respective coverage areas associated with one or more candidate secondary nodes, may determine whether a candidate secondary node is capable of operating on any of the frequency bands included in the requested frequency band combination, and may identify a secondary node that is capable of operating on any of the frequency bands included in the requested frequency band combination. In some aspects, the identified secondary node may be capable of providing an SCell that may be included in an MCG or an SCG associated with the UE.
  • MN 2 may transmit, to the identified secondary node, an SN Activation Request communication to activate the secondary node in the dual connectivity configuration associated with the UE.
  • the secondary node may respond to the SN Activation Request communication with an SN Activation Acknowledgement (ACK) if the secondary node is successfully activated.
  • ACK SN Activation Acknowledgement
  • MN 2 may complete the master node RACH procedure by transmitting a Msg4 communication (e.g., in a four-step RACH procedure) or a MsgB communication (e.g., in a two-step RACH procedure) to the UE.
  • the Msg4 communication or MsgB communication may include an RRCSetup command (e.g., if the UE is transitioning from an idle state) or an RRCResume command (e.g., if the UE is transitioning from an inactive state) .
  • MN 2 may transmit an RRCReconfiguration communication (or another type of signaling communication) to modify the RRC configuration of the UE.
  • the RRCReconfiguration communication may include an indication that the UE is to add the secondary node to the dual connectivity configuration associated with the UE.
  • the RRCReconfiguration communication may include information associated with the secondary node.
  • the information associated with the secondary node may include information identifying an SCell configuration for the secondary node (e.g., a cell identifier and/or another type of identifier associated with the secondary node, the frequency band on which the secondary node operates, and/or the like) , information identifying a secondary cell state associated with the secondary node (e.g., an indication of whether the secondary node is activated or deactivated, which may be based at least in part on whether MN 2 received an SN Activation ACK communication from the secondary node) , and/or the like.
  • an SCell configuration for the secondary node e.g., a cell identifier and/or another type of identifier associated with the secondary node, the frequency band on which the secondary node operates, and/or the like
  • information identifying a secondary cell state associated with the secondary node e.g., an indication of whether the secondary node is activated or deactivated
  • the UE may perform a RACH procedure with the secondary node based at least in part on receiving the information associated with the secondary node. For example, the UE may use the secondary cell configuration to identify the secondary node and to transmit, on the frequency band associated with the secondary node, one or more RACH communications to the secondary node to initiate the RACH procedure.
  • MN 1 may provide an indication of one or more candidate frequency band combinations to the UE such that, if the UE communicatively connects with a new master node (e.g., MN 2) when transitioning from the inactive state or idle state back into the active state, the UE may provide a requested frequency band combination to the new master node so that the new master node may select a secondary node that is capable of using one or more frequency bands included in the requested frequency band combination.
  • a new master node e.g., MN 2
  • MN 2 new master node
  • This reduces delays in connection establishment between the UE and a secondary node and decreases the consumption of radio, processing, and/or memory resources on attempting to establish a connection with a secondary node that operates on a frequency band that the UE may not support.
  • Fig. 7 is provided as an example. Other examples may differ from what is described with respect to Fig. 7.
  • Fig. 8 is a diagram illustrating an example process 800 performed, for example, by a UE, in accordance with various aspects of the present disclosure.
  • Example process 800 is an example where a UE (e.g., UE 120) performs operations associated with storing band combination configurations for UE connection resume.
  • a UE e.g., UE 120
  • process 800 may include receiving, from a first master node serving the UE, a communication that includes a command to transition from an active state to an inactive state or an idle state, wherein the communication includes an indication of one or more candidate frequency band combinations (block 810) .
  • the UE e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, and/or the like
  • the communication includes an indication of one or more candidate frequency band combinations.
  • process 800 may include transmitting, based at least in part on transitioning from the inactive state or the idle state to the active state, a request to communicatively connect with a second master node, wherein the request includes an indication of a requested frequency band combination of the one or more candidate frequency band combinations (block 820) .
  • the UE e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, and/or the like
  • the request includes an indication of a requested frequency band combination of the one or more candidate frequency band combinations.
  • process 800 may include receiving, from the second master node, information associated with a secondary node, for the UE, that is capable of using the requested frequency band combination (block 830) .
  • the UE e.g., using receive processor 258, transmit processor 264, controller/processor 280, memory 282, and/or the like
  • Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the communication comprises an RRCRelease with suspendConfig communication and the command includes a command to transition from the active state to the inactive state, or the communication comprises an RRCRelease communication and the command includes a command to transition from the active state to the idle state.
  • receiving the information associated with the secondary node comprises receiving the information associated with the secondary node in at least one of a Msg4 communication in a four-step RACH procedure, a MsgB communication in a two-step RACH procedure, or an RRCReconfiguration communication.
  • process 800 further comprises storing, based at least in part on receiving the communication, information identifying the one or more candidate frequency band combinations.
  • process 800 further comprises identifying, based at least in part on transitioning from the inactive state or the idle state to the active state, the requested frequency band combination from the one or more candidate frequency band combinations.
  • the information associated with the secondary node comprises at least one of a secondary cell configuration for the secondary node or a secondary cell state associated with the secondary node.
  • the secondary node comprises a secondary cell included in an MCG or a secondary cell included in an SCG.
  • the secondary cell state indicates whether the secondary cell is activated or deactivated.
  • process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 8. Additionally, or alternatively, two or more of the blocks of process 800 may be performed in parallel.
  • Fig. 9 is a diagram illustrating an example process 900 performed, for example, by a base station, in accordance with various aspects of the present disclosure.
  • Example process 900 is an example where a base station (e.g., base station 110) performs operations associated with storing band combination configurations for UE connection resume.
  • a base station e.g., base station 110
  • process 900 may include storing information identifying a UE capability for a UE, wherein the base station is a first master node that serves the UE (block 910) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • the base station is a first master node that serves the UE.
  • process 900 may include transmitting, to the UE and based at least in part on storing the information identifying the UE capability, a command to transition from an active state to an inactive state (block 920) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • process 900 may include receiving a request for the information identifying the UE capability from a second master node (block 930) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • process 900 may include transmitting, based at least in part on receiving the request, the information identifying the UE capability to the second master node (block 940) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the information identifying the UE capability includes an indication of one or more candidate frequency band combinations that the UE is capable of using.
  • the command to transition from the active state to the inactive state comprises an RRCRelease with suspendConfig communication.
  • the request for the information identifying the UE capability comprises a UE Context Retrieve Request communication.
  • transmitting the information identifying the UE capability to the second master node comprises transmitting the information identifying the UE capability in a UE Context Retrieve Response communication.
  • the information identifying the UE capability includes information identifying an identifier associated with the UE
  • the request for the information identifying the UE capability includes an indication of the identifier associated with the UE
  • transmitting the information identifying the UE capability to the second master node comprises transmitting the information identifying the UE capability based at least in part on the indication of the identifier associated with the UE included in the request.
  • receiving the request for the information identifying the UE capability comprises receiving the request after the UE has transitioned from the inactive state to the active state.
  • process 900 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 9. Additionally, or alternatively, two or more of the blocks of process 900 may be performed in parallel.
  • Fig. 10 is a diagram illustrating an example process 1000 performed, for example, by a base station, in accordance with various aspects of the present disclosure.
  • Example process 1000 is an example where a base station (e.g., base station 110) performs operations associated with storing band combination configurations for UE connection resume.
  • a base station e.g., base station 110
  • process 1000 may include receiving, based at least in part on a UE transitioning from an inactive state to an active state, a request for the UE to communicatively connect with the base station as a first master node (block 1010) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • process 1000 may include transmitting, to a second master node, a request for information identifying a UE capability for a UE, wherein the second master node served the UE prior to the UE transitioning from the inactive state to the active state (block 1020) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • the second master node may have served the UE prior to the UE transitioning from the inactive state to the active state.
  • process 1000 may include identifying, based at least in part on the UE capability, a secondary node for the UE (block 1030) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • process 1000 may include transmitting, to the UE, information associated with the secondary node (block 1040) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the information identifying the UE capability includes at least an indication of one or more candidate frequency band combinations that the UE is capable of using, and identifying the secondary node comprises identifying the secondary node based at least part on the secondary node being capable of using at least one candidate frequency band combination of the one or more candidate frequency band combinations.
  • the request to communicatively connect with the base station comprises at least one of a Msg1 communication in a four-step RACH procedure, a Msg3 communication in the four-step RACH procedure, or a MsgA communication in a two-step RACH procedure.
  • transmitting the request for the information identifying the UE capability comprises transmitting the request, for the information identifying the UE capability, in a UE Context Retrieve Request communication.
  • process 1000 further comprises receiving, from the second master node and based at least in part on transmitting the request, the information identifying the UE capability, the information identifying the UE capability being received in a UE Context Retrieve Response communication.
  • process 1000 further comprises transmitting, based at least in part on identifying the secondary node, an activation request to the secondary node and receiving, based at least in part on transmitting the activation request, an activation ACK from the secondary node.
  • transmitting the information associated with the secondary node comprises transmitting, based at least in part on receiving the activation ACK, the information associated with the secondary node.
  • transmitting the information associated with the secondary node comprises transmitting the information associated with the secondary node in at least one of a Msg4 communication in a four-step RACH procedure, a MsgB communication in a two-step RACH procedure, or an RRCReconfiguration communication.
  • the information associated with the secondary node comprises at least one of a secondary cell configuration for the secondary node or a secondary cell state associated with the secondary node.
  • the secondary node comprises a secondary cell included in an MCG or a secondary cell included in an SCG.
  • the secondary cell state indicates whether the secondary cell is activated or deactivated.
  • process 1000 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 10. Additionally, or alternatively, two or more of the blocks of process 1000 may be performed in parallel.
  • Fig. 11 is a diagram illustrating an example process 1100 performed, for example, by a base station, in accordance with various aspects of the present disclosure.
  • Example process 1100 is an example where a base station (e.g., base station 110) performs operations associated with storing band combination configurations for UE connection resume.
  • a base station e.g., base station 110
  • process 1100 may include receiving, based at least in part on a UE transitioning from an inactive state or an idle state to an active state, a request for the UE to communicatively connect with the base station as a first master node, wherein the request indicates a requested combination of frequency bands for the UE, wherein the requested combination of frequency bands is included in a plurality of candidate combinations of frequency bands indicated, to the UE, by a second master node, and wherein the second master node served the UE prior to the UE transitioning from the inactive state or the idle state to the active state (block 1110) .
  • the base station may receive, based at least in part on a UE transitioning from an inactive state or an idle state to an active state, a request for the UE to communicatively connect with the base station as a first master node, as described above.
  • the request indicates a requested combination of frequency bands for the UE.
  • the requested combination of frequency bands is included in a plurality of candidate combinations of frequency bands indicated, to the UE, by a second master node.
  • the second master node may have served the UE prior to the UE transitioning from the inactive state or the idle state to the active state.
  • process 1100 may include identifying, based at least in part on receiving the request, a secondary node, for the UE, that is capable of using the requested combination of frequency bands (block 1120) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • process 1100 may include transmitting, to the UE, information associated with the secondary node (block 1130) .
  • the base station e.g., using transmit processor 220, receive processor 238, controller/processor 240, memory 242, and/or the like
  • Process 1100 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the request to communicatively connect with the base station comprises at least one of a Msg3 communication in a four-step RACH procedure or a MsgA communication in a two-step RACH procedure.
  • process 1100 further comprises transmitting, based at least in part on identifying the secondary node, an activation request to the secondary node and receiving, based at least in part on transmitting the activation request, an activation ACK from the secondary node.
  • transmitting the information associated with the secondary node comprises transmitting, based at least in part on receiving the activation ACK, the information associated with the secondary node.
  • transmitting the information associated with the secondary node comprises transmitting the information associated with the secondary node in at least one of a Msg4 communication in a four-step RACH procedure, a MsgB communication in a two-step RACH procedure, or an RRCReconfiguration communication.
  • the information associated with the secondary node comprises at least one of a secondary cell configuration for the secondary node or a secondary cell state associated with the secondary node.
  • the secondary node comprises a secondary cell included in an MCG or a secondary cell included in an SCG.
  • the secondary cell state indicates whether the secondary cell is activated or deactivated.
  • process 1100 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 11. Additionally, or alternatively, two or more of the blocks of process 1100 may be performed in parallel.
  • Fig. 12 is a conceptual data flow diagram 1200 illustrating the data flow between different modules/means/components in an example apparatus 1202.
  • the apparatus 1202 may be a UE (e.g., UE 120) .
  • the apparatus 1202 includes a reception component 1204, a storage component 1206, an identifying component 1208, a transition component 1210, and a transmission component 1212.
  • Reception component 1204 may receive a communication 1220 from a BS 1230 (e.g., BS 110) that serves apparatus 1204 as a master node.
  • reception component 1204 may receive communication 1220 that includes a command to transition from an active state to an inactive state or an idle state and an indication of one or more candidate frequency band combinations.
  • reception component 1204 may include an antenna (e.g., antenna 252) , a receive processor (e.g., receive processor 258) , a controller/processor (e.g., controller/processor 280) , a transceiver, a receiver, and/or the like.
  • Storage component 1206 may receive the indication of the one or more candidate frequency band combinations, included in communication 1220, from reception component 1206.
  • Storage component 1206 may store information identifying the one or more candidate frequency band combinations.
  • storage component 1206 may include a memory (e.g., memory 282) .
  • Transition component 1210 may receive the command, included in communication 1220, from reception component 1204. Transition component 1210 may transition apparatus 1202 from an active state to an idle state or an inactive state based at least in part on receiving the command. Moreover, transition component 1210 may subsequently (e.g., after causing apparatus 1202 to transition from the active state to an idle state or an inactive state) transition apparatus 1202 from the idle state or the inactive state back into the active state.
  • reception component 1204 may include a receive processor (e.g., receive processor 258) , a controller/processor (e.g., controller/processor 280) , and/or the like.
  • Identifying component 1208 may identify a requested frequency band combination. For example, identifying component 1208 may identify a requested frequency band combination based at least in part on the information identifying the one or more candidate frequency band combinations stored by storage component 1206. In some aspects, identifying component 1208 may identify the requested frequency band combination after transition component 1210 causes apparatus 1202 to transition from the idle state or the inactive state back into the active state. In some aspects, determining component 1206 may include a processor (e.g., controller/processor 280, receive processor 258, and/or the like) .
  • a processor e.g., controller/processor 280, receive processor 258, and/or the like
  • Transmission component 1212 may transmit a communication 1222 to another BS 1230 (e.g., BS 110) that is a new master node that is to serve apparatus 1202 after apparatus 1202 transitions from the idle state or the inactive state back into the active state.
  • Communication 1222 may include an indication of the requested frequency band combination.
  • transmission component 1212 may include an antenna (e.g., antenna 252) , a transmit processor (e.g., transmit processor 264) , a controller/processor (e.g., controller/processor 280) , a transceiver, a transmitter, and/or the like.
  • Reception component 124 may further receive a communication 1224 that includes information associated with a secondary node (e.g., another BS 1230 or BS 110) based at least in part on transmission component 1212 transmitting communication 1222.
  • a secondary node e.g., another BS 1230 or BS 110
  • the apparatus may include additional components that perform each of the blocks of the algorithm in the aforementioned method 800 of Fig. 8 and/or the like. Each block in the aforementioned method 800 of Fig. 8 and/or the like may be performed by a component and the apparatus may include one or more of those components.
  • the components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.
  • Fig 12 The number and arrangement of components shown in Fig 12 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 12. Furthermore, two or more components shown in Fig. 12 may be implemented within a single component, or a single component shown in Fig. 12 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of components (e.g., one or more components) shown in Fig. 12 may perform one or more functions described as being performed by another set of components shown in Fig. 12.
  • Fig. 13 is a conceptual data flow diagram 1300 illustrating the data flow between different modules/means/components in an example apparatus 1302.
  • the apparatus 1302 may be a base station (e.g., BS 110) .
  • Apparatus 1302 may serve as a master node in a dual connectivity configuration for a UE 1330 (e.g., UE 120) .
  • apparatus 1302 includes a reception component 1304, a storage component 1306, and a transmission component 1308.
  • Storage component 1306 may store information identifying a UE capability associated with UE 1330.
  • the UE capability may include information identifying one or more candidate frequency band combinations that UE 1330 is capable of using.
  • the UE capability may further include information identifying UE 1330, such as an identifier associated with UE 1330.
  • storage component 1306 may include a memory (e.g., memory 242) .
  • Transmission component 1308 may transmit a communication 1320 to UE 1330.
  • transmission component 1308 may transmit communication 1320 after storage component 1306 stores the information identifying the UE capability associated with UE 1330.
  • Communication 1320 may include a command to transition UE 1330 from an active state to an idle state or an inactive state.
  • transmission component 1308 may include an antenna (e.g., antenna 234) , a transmit processor (e.g., transmit processor 220) , a controller/processor (e.g., controller/processor 240) , a transceiver, a transmitter, and/or the like.
  • Reception component 1304 may receive a communication 1322 from a BS 1340 (e.g., BS 110) that is a new master node that serves UE 1330 after UE 1330 has subsequently transitioned from the idle state or the inactive state back into the active state.
  • Communication 1322 may include a request for information identifying the UE capability associated with UE 1330.
  • reception component 1304 may include an antenna (e.g., antenna 234) , a receive processor (e.g., receive processor 238) , a controller/processor (e.g., controller/processor 240) , a transceiver, a receiver, and/or the like.
  • Transmission component 1308 may transmit a communication 1324 to BS 1340 based at least in part on receiving communication 1322.
  • Communication 1324 may include information identifying the UE capability associated with UE 1330.
  • Transmission component 1308 may obtain the information identifying the UE capability from storage component 1306.
  • the apparatus may include additional components that perform each of the blocks of the algorithm in the aforementioned method 900 of Fig. 9 and/or the like. Each block in the aforementioned method 900 of Fig. 9 and/or the like may be performed by a component and the apparatus may include one or more of those components.
  • the components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.
  • Fig 13 The number and arrangement of components shown in Fig 13 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 13. Furthermore, two or more components shown in Fig. 13 may be implemented within a single component, or a single component shown in Fig. 13 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of components (e.g., one or more components) shown in Fig. 13 may perform one or more functions described as being performed by another set of components shown in Fig. 13.
  • Fig. 14 is a conceptual data flow diagram 1400 illustrating the data flow between different modules/means/components in an example apparatus 1402.
  • the apparatus 1402 may be a base station (e.g., BS 110) .
  • Apparatus 1402 may serve as a new master node in a dual connectivity configuration for a UE 1430 (e.g., UE 120) (e.g., a master node that is different from the last serving master node of UE 1430 prior to UE 1430 transitioning from an active state to an idle state or an inactive state) .
  • apparatus 1402 includes a reception component 1404, an identifying component 1406, and a transmission component 1408.
  • Reception component 1404 may receive a communication 1420 from a UE 1430.
  • reception component 1404 may receive communication 1420 after UE 1430 has subsequently transitioned from the idle state or the inactive state back into the active state.
  • Communication 1420 may include a request for UE 1430 to communicatively connect with apparatus 1402 as a new master node in a dual connectivity configuration associated with UE 1430.
  • reception component 1404 may include an antenna (e.g., antenna 234) , a receive processor (e.g., receive processor 238) , a controller/processor (e.g., controller/processor 240) , a transceiver, a receiver, and/or the like.
  • transmission component 1408 may transmit a communication 1422 to a BS 1440 (e.g., BS 110) , which may be the last serving master node for UE 1430 prior to UE 1430 transitioning from the active state into the idle state or the inactive state.
  • Communication 1422 may a request for information identifying a UE capability of UE 1430.
  • Reception component 1404 may receive a communication 1424 that includes an indication of the UE capability of UE 1430, which may include an indication of one or more candidate frequency band combinations that UE 1430 is capable of using.
  • transmission component 1408 may include an antenna (e.g., antenna 234) , a transmit processor (e.g., transmit processor 220) , a controller/processor (e.g., controller/processor 240) , a transceiver, a transmitter, and/or the like.
  • a transmit processor e.g., transmit processor 220
  • controller/processor e.g., controller/processor 240
  • transceiver e.g., a transmitter, and/or the like.
  • Identifying component 1406 may identify a secondary node for the dual connectivity configuration associated with UE 1430. In some aspects, if communication 1420 includes an indication of a requested frequency band combination, identifying component 1406 may identify the secondary node based at least in part on the secondary node being capable of using the requested frequency band combination. In some aspects, if communication 1420 does not include an indication of a requested frequency band combination, identifying component 1406 may identify the secondary node based at least in part on the indication of the one or more candidate frequency band combinations included in communication 1424.
  • identifying component 1406 may include a transmit processor (e.g., transmit processor 220) , a receive processor (e.g., receive processor 238, a controller/processor (e.g., a controller/processor 240) , and/or the like.
  • a transmit processor e.g., transmit processor 220
  • a receive processor e.g., receive processor 238, a controller/processor (e.g., a controller/processor 240) , and/or the like.
  • Transmission component 1408 may transmit a communication 1426 to UE 1430 based at least in part on identifying the secondary node.
  • Communication 1426 may include information associated with the secondary node.
  • the apparatus may include additional components that perform each of the blocks of the algorithm in the aforementioned method 1000 of Fig. 10, method 1100 of Fig. 11, and/or the like. Each block in the aforementioned method 1000 of Fig. 10, method 1100 of Fig. 11, and/or the like may be performed by a component and the apparatus may include one or more of those components.
  • the components may be one or more hardware components specifically configured to carry out the stated processes/algorithm, implemented by a processor configured to perform the stated processes/algorithm, stored within a computer-readable medium for implementation by a processor, or some combination thereof.
  • Fig 14 The number and arrangement of components shown in Fig 14 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 14. Furthermore, two or more components shown in Fig. 14 may be implemented within a single component, or a single component shown in Fig. 14 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of components (e.g., one or more components) shown in Fig. 14 may perform one or more functions described as being performed by another set of components shown in Fig. 14.
  • ком ⁇ онент is intended to be broadly construed as hardware, firmware, and/or a combination of hardware and software.
  • a processor is implemented in hardware, firmware, and/or a combination of hardware and software.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .
  • the terms “has, ” “have, ” “having, ” and/or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Selon divers aspects, la présente invention concerne de manière générale la communication sans fil. Selon certains aspects, un équipement d'utilisateur (UE) peut recevoir, en provenance d'un premier nœud maître desservant l'UE, une communication qui contient une commande pour passer d'un état actif à un état inactif ou à un état de veille. L'UE peut transmettre, au moins en partie en fonction de la transition de l'état inactif ou de l'état de veille à l'état actif, une demande de connexion de communication avec un deuxième nœud maître. L'UE peut recevoir, en provenance du deuxième nœud maître, des informations associées à un nœud secondaire, pour l'UE, qui est capable d'utiliser la combinaison de bandes de fréquences demandée. L'invention se présente également sous de nombreux autres aspects.
PCT/CN2019/086129 2019-05-09 2019-05-09 Stockage de configurations de combinaison de bandes pour reprise de connexion d'ue WO2020223946A1 (fr)

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WO2015144240A1 (fr) * 2014-03-28 2015-10-01 Nokia Solutions And Networks Oy Procédé et dispositif pour transfert dans un équipement utilisateur en mode double connectivité et une station de base
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