WO2021226904A1 - Seuil relaxé pour induire des additions de groupe de cellules secondaires - Google Patents

Seuil relaxé pour induire des additions de groupe de cellules secondaires Download PDF

Info

Publication number
WO2021226904A1
WO2021226904A1 PCT/CN2020/090136 CN2020090136W WO2021226904A1 WO 2021226904 A1 WO2021226904 A1 WO 2021226904A1 CN 2020090136 W CN2020090136 W CN 2020090136W WO 2021226904 A1 WO2021226904 A1 WO 2021226904A1
Authority
WO
WIPO (PCT)
Prior art keywords
cell
threshold
signal strength
rat
measured signal
Prior art date
Application number
PCT/CN2020/090136
Other languages
English (en)
Inventor
Yuankun ZHU
Fojian ZHANG
Chaofeng HUI
Hao Zhang
Pan JIANG
Jian Li
Qi Wang
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2020/090136 priority Critical patent/WO2021226904A1/fr
Publication of WO2021226904A1 publication Critical patent/WO2021226904A1/fr

Links

Images

Classifications

    • 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
    • H04W76/16—Involving different core network technologies, e.g. a packet-switched [PS] bearer in combination with a circuit-switched [CS] bearer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0058—Transmission of hand-off measurement information, e.g. measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0069—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink
    • H04W36/00698—Transmission or use of information for re-establishing the radio link in case of dual connectivity, e.g. decoupled uplink/downlink using different RATs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0088—Scheduling hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for dual connectivity, such as for inducing secondary cell group (SCG) additions.
  • SCG secondary cell group
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts, etc. These 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, etc. ) .
  • available system resources e.g., bandwidth, transmit power, etc.
  • multiple-access systems examples include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE Advanced (LTE-A) systems, 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, and time division synchronous code division multiple access (TD-SCDMA) systems, to name a few.
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • LTE-A LTE Advanced
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • New radio e.g., 5G NR
  • 5G NR is an example of an emerging telecommunication standard.
  • NR is a set of enhancements to the LTE mobile standard promulgated by 3GPP.
  • NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using OFDMA with a cyclic prefix (CP) on the downlink (DL) and on the uplink (UL) .
  • CP cyclic prefix
  • NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • MIMO multiple-input multiple-output
  • the method generally includes connecting to a first cell in a first radio access technology (RAT) .
  • the method generally includes measuring signal strength of a second cell in a second RAT.
  • the method generally includes detecting that the measured signal strength of the second cell is lower than a configured first threshold and that the measured signal strength is at or above a second threshold.
  • the second threshold is lower than the configured first threshold.
  • the method generally includes transmitting a measurement report to the first cell indicating that the measured signal strength is at or above the configured first threshold based on the detecting.
  • aspects of the present disclosure provide means for, apparatus, processors, and computer-readable mediums for performing the methods described herein.
  • the one or more aspects comprise the features hereinafter fully described and particularly pointed out in the claims.
  • the following description and the appended drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.
  • FIG. 1 is a block diagram conceptually illustrating an example telecommunications system, in accordance with certain aspects of the present disclosure.
  • FIG. 2 is a block diagram conceptually illustrating a design of an example a base station (BS) and user equipment (UE) , in accordance with certain aspects of the present disclosure.
  • BS base station
  • UE user equipment
  • FIG. 3 is an example frame format for new radio (NR) , in accordance with certain aspects of the present disclosure.
  • FIG. 4 is a call flow diagram illustrating example of event reporting in dual connectivity.
  • FIG. 5 is a flow diagram illustrating example operations for wireless communication by a UE, in accordance with certain aspects of the present disclosure.
  • FIG. 6 is a call flow diagram illustrating example event reporting in dual connectivity for inducing a secondary cell group (SCG) addition, in accordance with aspects of the present disclosure.
  • SCG secondary cell group
  • FIG. 7 illustrates a communications device that may include various components configured to perform operations for the techniques disclosed herein in accordance with aspects of the present disclosure.
  • aspects of the present disclosure provide apparatus, methods, processing systems, and computer readable mediums for dual connectivity, including for inducing secondary cell group (SCG) additions.
  • SCG secondary cell group
  • a user equipment may support dual connectivity.
  • the UE may connect to a first cell in a first radio access technology (RAT) , such as long term evolution (LTE) .
  • the LTE cell may provide connectivity to another RAT, such as new radio (e.g., 5G NR) .
  • This may be referred to as a 5G anchor cell.
  • the anchor cell may add 5G NR cell to the secondary cell group (SCG) when the 5G cell becomes strong enough.
  • the anchor cell may configure a threshold value for reporting the inter-RAT neighbor (e.g., the 5G NR cell) .
  • the threshold may be a high threshold. In this case, even when the 5G NR has a strong signal, it still may not reach the configured threshold.
  • the threshold may be a relaxed (e.g., lower) threshold than the configured threshold.
  • the threshold may be configurable, for example, based on a preference for likelihood of achieving 5G service.
  • the UE may still report the 5G NR cell when the signal strength meets the lower threshold.
  • the UE may send an event report (e.g., a “faked” EventB1 report) as if the 5G NR cell measurements reached the higher configured threshold.
  • SCG secondary cell group
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies.
  • RAT may also be referred to as a radio technology, an air interface, etc.
  • a frequency may also be referred to as a carrier, a subcarrier, a frequency channel, a tone, a subband, etc.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • the techniques described herein may be used for various wireless networks and radio technologies. While aspects may be described herein using terminology commonly associated with 3G, 4G, and/or new radio (e.g., 5G NR) wireless technologies, aspects of the present disclosure can be applied in other generation-based communication systems.
  • 3G, 4G, and/or new radio e.g., 5G NR
  • NR access may support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., 80 MHz or beyond) , millimeter wave (mmW) targeting high carrier frequency (e.g., 25 GHz or beyond) , massive machine type communications MTC (mMTC) targeting non-backward compatible MTC techniques, and/or mission critical targeting ultra-reliable low-latency communications (URLLC) .
  • eMBB enhanced mobile broadband
  • mmW millimeter wave
  • mMTC massive machine type communications MTC
  • URLLC ultra-reliable low-latency communications
  • These services may include latency and reliability requirements.
  • These services may also have different transmission time intervals (TTI) to meet respective quality of service (QoS) requirements.
  • TTI transmission time intervals
  • QoS quality of service
  • these services may co-exist in the same subframe.
  • NR supports beamforming and beam direction may be dynamically configured. MIMO transmissions with precoding may also be supported.
  • MIMO configurations in the DL may support up to 8 transmit antennas with multi-layer DL transmissions up to 8 streams and up to 2 streams per UE. Multi-layer transmissions with up to 2 streams per UE may be supported. Aggregation of multiple cells may be supported with up to 8 serving cells.
  • FIG. 1 illustrates an example wireless communication network 100 in which aspects of the present disclosure may be performed.
  • the wireless communication network 100 may be an NR system (e.g., a 5G NR network) .
  • the wireless communication network 100 may be in communication with a core network 132.
  • the core network 132 may be in communication with one or more base station (BSs) 110 and/or user equipment (UE) 120 in the wireless communication network 100 via one or more interfaces.
  • BSs base station
  • UE user equipment
  • the wireless communication network 100 may include a number of BSs 110a-z (each also individually referred to herein as BS 110 or collectively as BSs 110) and other network entities.
  • a BS 110 may provide communication coverage for a particular geographic area, sometimes referred to as a “cell” , which may be stationary or may move according to the location of a mobile BS 110.
  • the BSs 110 may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in wireless communication network 100 through various types of backhaul interfaces (e.g., a direct physical connection, a wireless connection, a virtual network, or the like) using any suitable transport network.
  • backhaul interfaces e.g., a direct physical connection, a wireless connection, a virtual network, or the like
  • the BSs 110a, 110b and 110c may be macro BSs for the macro cells 102a, 102b and 102c, respectively.
  • the BS 110x may be a pico BS for a pico cell 102x.
  • the BSs 110y and 110z may be femto BSs for the femto cells 102y and 102z, respectively.
  • a BS may support one or multiple cells.
  • a network controller 130 may couple to a set of BSs 110 and provide coordination and control for these BSs 110 (e.g., via a backhaul) .
  • the BSs 110 communicate with UEs 120a-y (each also individually referred to herein as UE 120 or collectively as UEs 120) in the wireless communication network 100.
  • the UEs 120 (e.g., 120x, 120y, etc. ) may be dispersed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile.
  • Wireless communication network 100 may also include relay stations (e.g., relay station 110r) , also referred to as relays or the like, that receive a transmission of data and/or other information from an upstream station (e.g., a BS 110a or a UE 120r) and sends a transmission of the data and/or other information to a downstream station (e.g., a UE 120 or a BS 110) , or that relays transmissions between UEs 120, to facilitate communication between devices.
  • relay stations e.g., relay station 110r
  • relays or the like that receive a transmission of data and/or other information from an upstream station (e.g., a BS 110a or a UE 120r) and sends a transmission of the data and/or other information to a downstream station (e.g., a UE 120 or a BS 110) , or that relays transmissions between UEs 120, to facilitate communication between devices.
  • the BSs 110 and UEs 120 may be configured for inducing secondary cell group (SCG) additions.
  • SCG secondary cell group
  • the UE 120a includes a measurement reporting manager 122.
  • the cell addition manager 122 may be configured to for inducing SCG additions, in accordance with aspects of the disclosure.
  • FIG. 2 illustrates example components of BS 110a and UE 120a (e.g., in the wireless communication network 100 of FIG. 1) , which may be used to implement aspects of the present disclosure.
  • the BS 110a may include a connection manager 112 configured to receive reporting from the UE 120a and perform SCG addition (s) based on the reporting.
  • a transmit processor 220 may receive data from a data source 212 and control information from a controller/processor 240.
  • the control information may be for the physical broadcast channel (PBCH) , physical control format indicator channel (PCFICH) , physical hybrid ARQ indicator channel (PHICH) , physical downlink control channel (PDCCH) , group common PDCCH (GC PDCCH) , etc.
  • the data may be for the physical downlink shared channel (PDSCH) , etc.
  • a medium access control (MAC) -control element (MAC-CE) is a MAC layer communication structure that may be used for control command exchange between wireless nodes.
  • the MAC-CE may be carried in a shared channel such as a physical downlink shared channel (PDSCH) , a physical uplink shared channel (PUSCH) , or a physical sidelink shared channel (PSSCH) .
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • PSSCH physical sidelink shared channel
  • the processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively.
  • the transmit processor 220 may also generate reference symbols, such as for the primary synchronization signal (PSS) , secondary synchronization signal (SSS) , and channel state information reference signal (CSI-RS) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, and/or the reference symbols, if applicable, and may provide output symbol streams to the modulators (MODs) 232a-232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc. ) to obtain an output sample stream.
  • MIMO multiple-input multiple-output
  • Each modulator may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • Downlink signals from modulators 232a-232t may be transmitted via the antennas 234a-234t, respectively.
  • the antennas 252a-252r may receive the downlink signals from the BS 110a and may provide received signals to the demodulators (DEMODs) in transceivers 254a-254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples.
  • Each demodulator may further process the input samples (e.g., for OFDM, etc. ) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from all the demodulators 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • a receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 120a to a data sink 260, and provide decoded control information to a controller/processor 280.
  • a transmit processor 264 may receive and process data (e.g., for the physical uplink shared channel (PUSCH) ) from a data source 262 and control information (e.g., for the physical uplink control channel (PUCCH) from the controller/processor 280.
  • the transmit processor 264 may also generate reference symbols for a reference signal (e.g., for the sounding reference signal (SRS) ) .
  • the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by the modulators in transceivers 254a-254r (e.g., for SC-FDM, etc. ) , and transmitted to the BS 110a.
  • the uplink signals from the UE 120a may be received by the antennas 234, processed by the modulators 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 the UE 120a.
  • the receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller/processor 240.
  • the memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.
  • a scheduler 244 may schedule UEs for data transmission on the downlink and/or uplink.
  • Antennas 252, processors 266, 258, 264, and/or controller/processor 280 of the UE 120a and/or antennas 234, processors 220, 230, 238, and/or controller/processor 240 of the BS 110a may be used to perform the various techniques and methods described herein.
  • the controller/processor 280 of the UE 120a has a cell addition manager 281 that may be configured for to perform operations of FIG. 5.
  • the controller/processor 240 of the BS 110a may include a connection manager 241 configured to perform operations complementary to the operation of FIG. 5, such as to receive reporting from the UE 120a and perform SCG addition (s) based on the reporting.
  • controller/processor Although shown at the controller/processor, other components of the UE 120a and BS 110a may be used to perform the operations described herein.
  • NR may utilize orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) on the uplink and downlink.
  • OFDM orthogonal frequency division multiplexing
  • CP cyclic prefix
  • NR may support half-duplex operation using time division duplexing (TDD) .
  • OFDM and single-carrier frequency division multiplexing (SC-FDM) partition the system bandwidth into multiple orthogonal subcarriers, which are also commonly referred to as tones, bins, etc. Each subcarrier may be modulated with data. Modulation symbols may be sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers may be dependent on the system bandwidth.
  • the minimum resource allocation may be 12 consecutive subcarriers.
  • the system bandwidth may also be partitioned into subbands. For example, a subband may cover multiple RBs.
  • NR may support a base subcarrier spacing (SCS) of 15 KHz and other SCS may be defined with respect to the base SCS (e.g., 30 kHz, 60 kHz, 120 kHz, 240 kHz, etc. ) .
  • SCS base subcarrier spacing
  • FIG. 3 is a diagram showing an example of a frame format 300 for NR.
  • the transmission timeline for each of the downlink and uplink may be partitioned into units of radio frames.
  • Each radio frame may have a predetermined duration (e.g., 10 ms) and may be partitioned into 10 subframes, each of 1 ms, with indices of 0 through 9.
  • Each subframe may include a variable number of slots (e.g., 1, 2, 4, 8, 16, ...slots) depending on the SCS.
  • Each slot may include a variable number of symbol periods (e.g., 7 or 14 symbols) depending on the SCS.
  • the symbol periods in each slot may be assigned indices.
  • a mini-slot which may be referred to as a sub-slot structure, refers to a transmit time interval having a duration less than a slot (e.g., 2, 3, or 4 symbols) .
  • Each symbol in a slot may indicate a link direction (e.g., DL, UL, or flexible) for data transmission and the link direction for each subframe may be dynamically switched.
  • the link directions may be based on the slot format.
  • Each slot may include DL/UL data as well as DL/UL control information.
  • a synchronization signal block is transmitted.
  • SSBs may be transmitted in a burst where each SSB in the burst corresponds to a different beam direction for UE-side beam management (e.g., including beam selection and/or beam refinement) .
  • the SSB includes a PSS, a SSS, and a two symbol PBCH.
  • the SSB can be transmitted in a fixed slot location, such as the symbols 0-3 as shown in FIG. 3.
  • the PSS and SSS may be used by UEs for cell search and acquisition.
  • the PSS may provide half-frame timing, the SS may provide the CP length and frame timing.
  • the PSS and SSS may provide the cell identity.
  • the PBCH carries some basic system information, such as downlink system bandwidth, timing information within radio frame, SS burst set periodicity, system frame number, etc.
  • the SSBs may be organized into SS bursts to support beam sweeping. Further system information such as, remaining minimum system information (RMSI) , system information blocks (SIBs) , other system information (OSI) can be transmitted on a physical downlink shared channel (PDSCH) in certain subframes.
  • the SSB can be transmitted up to sixty-four times, for example, with up to sixty-four different beam directions for mmWave.
  • the multiple transmissions of the SSB are referred to as a SS burst set.
  • SSBs in an SS burst set may be transmitted in the same frequency region, while SSBs in different SS bursts sets can be transmitted at different frequency regions.
  • NR and LTE are tightly integrated and connect to the existing 4G core network (e.g., EPC) , leveraging dual connectivity (DC) toward the terminal.
  • DC dual connectivity
  • a master node (MN) and a secondary node (SN) concurrently provide radio resources towards the terminal for enhanced end-user bit rates.
  • MN master node
  • SN secondary node
  • a 4G anchor node e.g., a 4G LTE eNB
  • a gNB may act as the SN.
  • E-UTRAN-NR dual connectivity or DCNR, which can provide dual connectivity between an Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access network (E-UTRAN) , such as 4G/LTE, and a NR network, such as 5G/NR.
  • E-UTRAN Evolved Universal Mobile Telecommunications System
  • E-UTRAN Evolved Universal Mobile Telecommunications System
  • NR NR network
  • 5G/NR 5G/NR
  • an LTE cell may become a master cell group (MCG) and an NR cell may become a secondary cell group (SCG) .
  • MCG master cell group
  • SCG secondary cell group
  • a MCG works as the anchor cell, to which the UE initially connects, and the MCG may add SCGs.
  • the SCG can be added by reconfiguration with sync and key change.
  • the SCG can be added through performing a random access (RA) procedure to PScell; resetting the NR MAC; re-establishing NR RLC; re-establishing the NR PDCP; and/or refreshing NR SCG security.
  • the SCG can be added by reconfiguration with synchronization but without key change.
  • the SCG can be added through perform RA to the PSCell; resetting the NR MAC; re-establishing NR RLC; and/or re-establishing PDCP data recovery (for an acknowledgment mode (AM) dedicated radio bearer (DRB) ) .
  • the SCG can be added by regular NR SCG reconfiguration without synchronization SCG Security; without performing RA to the PScell; without refreshing NR SCG security; with resetting the NR MAC and re-establishing NR RLC.
  • a threshold may be configured (e.g., by the anchor cell) for adding the NR cell.
  • the UE is configured with an Event B1 threshold.
  • the Event B1 threshold may be used for inter-RAT handover procedures which do not depend on the coverage of the serving cell.
  • Event B1 involves the parameters, such as signal strength (e.g., reference signal received power (RSRP) ) of an inter RAT neighbor becoming better than a threshold.
  • RSRP reference signal received power
  • the UE may trigger the Event B1 report when the following condition is met:
  • Mn is the measurement result of the inter-RAT neighbor cell, not taking into account any offsets, and is expressed in dBm or in dB, depending on the measurement quantity of the inter-RAT neighbor cell; Ofn is the frequency specific offset of the frequency of the inter-RAT neighbor cell, and is expressed in dB; Hys is the hysteresis parameter for Event B1 and is expressed in dB; and Thresh is the configured threshold parameter for this event and is in the same unit as Mn.
  • the configured threshold (e.g., the configured Event B1 threshold) may be high.
  • the anchor cell may configure the high threshold to control the service area, or for another reason.
  • the UE may not be able to add a 5G NR cell even when the 5G NR cell has a good signal and may be suitable for 5G service, but does not reach the configured threshold.
  • the UE 401 may establish a radio resource control (RRC) connection to the LTE anchor cell 402.
  • RRC radio resource control
  • the RRC reconfiguration message may include the configured threshold (e.g., the Event B1 threshold) for SCG addition.
  • the UE 401 schedules (e.g., initiates) cell measurements.
  • the UE may receive signals (e.g., SSB transmission (s) ) from a neighboring inter-RAT cell (e.g., NR cell 403) .
  • the UE detects the NR cell 403 based on the signals received from the NR cell.
  • the UE 401 performs cell measurements (e.g., signal strength measurements, such as RSRP) on the received signals.
  • cell measurements e.g., signal strength measurements, such as RSRP
  • the UE determines whether the cell measurements are greater than the configured Event B1 threshold. If not, then, the UE may continue performing cell detection/measurements again (e.g., returns to steps 412-420) . If yes, then, at 422, the UE 401 sends an Event B1 measurement report to the LTE anchor cell 402.
  • the LTE anchor cell 402 sends the UE 401 an RRC reconfiguration message adding the NR cell 403 to the SCG.
  • the LTE anchor cell 402 may send an SCG addition request to the NR cell 403 and the NR cell 403 may respond with an SCG addition acknowledgement to the LTE anchor cell 402.
  • the UE 401 sends an SCG addition completion message to the LTE anchor cell 402.
  • the LTE anchor cell 402 may send an SCG addition complete message to the NR cell 403.
  • a user equipment may have a relaxed threshold for reporting a second cell.
  • the UE may send an event B1 report to the network even when the measured signal strength of a cell in a neighboring radio access technology (e.g., 5G NR) is lower than a configured threshold (e.g., lower than the configured event B1 threshold) , but the measured signal strength is at or above the relaxed threshold.
  • the relaxed threshold may be a UE-configured and/or UE-specific threshold.
  • FIG. 5 is a flow diagram illustrating example operations 500 for wireless communication, in accordance with certain aspects of the present disclosure.
  • the operations 500 may be performed, for example, by UE (e.g., such as a UE 120a in the wireless communication network 100) .
  • Operations 500 may be implemented as software components that are executed and run on one or more processors (e.g., controller/processor 280 of FIG. 2) .
  • the transmission and reception of signals by the UE in operations 500 may be enabled, for example, by one or more antennas (e.g., antennas 252 of FIG. 2) .
  • the transmission and/or reception of signals by the UE may be implemented via a bus interface of one or more processors (e.g., controller/processor 280) obtaining and/or outputting signals.
  • the operations 500 may begin, at 505, where a UE may connect to a first cell in a first RAT.
  • the first RAT may an LTE network.
  • the first cell may include a 5G anchor cell in a master cell group (MCG) .
  • MCG master cell group
  • the UE may measure signal strength of a second cell in a second RAT.
  • the second RAT may be a NR RAT, such as 5G NR.
  • the UE may decode one or more synchronization signal blocks (SSBs) and detect the second cell in the second RAT based on decoding the SSBs.
  • measuring the signal strength of the second cell in the second RAT may involve performing signal strength measurements of the SSBs.
  • SSBs synchronization signal blocks
  • the UE may detect that the measured signal strength of the second cell is lower than a configured first threshold and that the measured signal strength is at or above a second threshold.
  • the second threshold is lower than the configured first threshold.
  • the second threshold is selected by the UE and is configurable.
  • the configured first threshold may be a configured Event B1 threshold.
  • the UE may transmit a measurement report to the first cell indicating that the measured signal strength is at or above the configured first threshold based on the detecting.
  • the measurement report is an event B1 measurement report.
  • the UE receives an indication that the second cell is available for connection in response to transmitting the measurement report to the first cell. The indication may indicate that the second cell is added in a SCG.
  • FIG. 6 illustrates an example of inducing an SCG addition according to the present disclosure.
  • the UE 601 may connect to the LTE anchor cell 602, receive the configured threshold, and perform cell detection and signal strength measurements as described above with respect to the steps 408-420 of FIG. 4.
  • the UE 601 may sends the Event B1 measurement and receive the SCG addition as discussed above with respect to the steps 422, 424, and 426 of FIG. 4. However, if the UE determines, at 420, that the cell measurements do not exceed the configured threshold, then, at 623, the UE 601may determine whether the cell measurements are equal to larger than the relaxed threshold (e.g., a UE-specified threshold) . If the cell measurements are smaller than this relaxed threshold, then the UE 601 may return to the steps 412-422 and 623. For example, the UE 601 may repeat the process of until the measures a cell with a signal strength that meets the configured or the UE-specified threshold for SCG addition.
  • the relaxed threshold e.g., a UE-specified threshold
  • the UE sends the measurement report to the LTE anchor cell 602, at 625 and can then be configured with the SCG addition at steps 424 and 426.
  • the measurement report at 625 may be an Event B1 report (e.g., a “faked” Event B1 report) indicating that the cell measurements exceed the configured threshold, even though the measurements do not exceed the configured threshold.
  • the NR cell may be added to the SCG even when the signal strength does not meet the higher configured Event B1 threshold, so long as the signal strength of the NR cell meets the relaxed threshold. This may allow the UE to obtain NR service more easily.
  • FIG. 7 illustrates a communications device 700 that may include various components (e.g., corresponding to means-plus-function components) configured to perform operations for the techniques disclosed herein, such as the operations illustrated in FIG. 5.
  • the communications device 700 includes a processing system 702 coupled to a transceiver 708 (e.g., a transmitter and/or a receiver) .
  • the transceiver 708 is configured to transmit and receive signals for the communications device 700 via an antenna 710, such as the various signals as described herein.
  • the processing system 702 may be configured to perform processing functions for the communications device 800, including processing signals received and/or to be transmitted by the communications device 700.
  • the processing system 702 includes a processor 704 coupled to a computer-readable medium/memory 712 via a bus 706.
  • the computer-readable medium/memory 712 is configured to store instructions (e.g., computer-executable code) that when executed by the processor 704, cause the processor 704 to perform the operations illustrated in FIG. 5, or other operations for performing the various techniques discussed herein inducing SCG addition.
  • computer-readable medium/memory 712 stores code 714 for connecting to a first cell in a first radio access technology (RAT) ; code 716 for measuring signal strength of a second cell in a second RAT; code 718 for detecting that the measured signal strength of the second cell is lower than a configured first threshold and that the measured signal strength is at or above a second threshold, wherein the second threshold is lower than the configured first threshold; and/or code 720 for transmitting a measurement report to the first cell indicating that the measured signal strength is at or above the configured first threshold based on the detecting, in accordance with aspects of the present disclosure.
  • the processor 704 has circuitry configured to implement the code stored in the computer-readable medium/memory 712.
  • the processor 704 includes circuitry 722 for connecting to a first cell in a first RAT; circuitry 724 for measuring signal strength of a second cell in a second RAT; circuitry 726 for detecting that the measured signal strength of the second cell is lower than a configured first threshold and that the measured signal strength is at or above a second threshold, wherein the second threshold is lower than the configured first threshold; and/or circuitry 728 for transmitting a measurement report to the first cell indicating that the measured signal strength is at or above the first threshold based on the detecting.
  • NR e.g., 5G NR
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal frequency division multiple access
  • SC-FDMA single-carrier frequency division multiple access
  • TD-SCDMA time division synchronous code division multiple access
  • a CDMA network may implement a radio technology such as Universal Terrestrial Radio Access (UTRA) , cdma2000, etc.
  • UTRA Universal Terrestrial Radio Access
  • UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA.
  • cdma2000 covers IS-2000, IS-95 and IS-856 standards.
  • a TDMA network may implement a radio technology such as Global System for Mobile Communications (GSM) .
  • GSM Global System for Mobile Communications
  • An OFDMA network may implement a radio technology such as NR (e.g. 5G RA) , Evolved UTRA (E-UTRA) , Ultra Mobile Broadband (UMB) , IEEE 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDMA, etc.
  • NR e.g. 5G RA
  • E-UTRA Evolved UTRA
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wi-Fi
  • IEEE 802.16 WiMAX
  • IEEE 802.20 Flash-OFDMA
  • UTRA and E-UTRA are part of Universal Mobile Telecommunication System (UMTS) .
  • LTE and LTE-A are releases of UMTS that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A and GSM are described in documents from an organization named “3rd Generation Partnership Project” (3GPP) .
  • cdma2000 and UMB are described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2) .
  • NR is an emerging wireless communications technology under development.
  • the term “cell” can refer to a coverage area of a Node B (NB) and/or a NB subsystem serving this coverage area, depending on the context in which the term is used.
  • NB Node B
  • BS next generation NodeB
  • AP access point
  • DU distributed unit
  • TRP transmission reception point
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or other types of cells.
  • 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 an association with the femto cell (e.g., UEs in a Closed Subscriber Group (CSG) , UEs for users in the home, etc. ) .
  • 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 UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a Customer Premises Equipment (CPE) , a cellular phone, a smart phone, a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, an appliance, a medical device or medical equipment, a biometric sensor/device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wrist band, smart jewelry (e.g., a smart ring, a smart bracelet, etc.
  • CPE Customer Premises Equipment
  • PDA personal digital assistant
  • WLL wireless local loop
  • MTC machine-type communication
  • eMTC evolved MTC
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., that may communicate with a BS, 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.
  • a network e.g., a wide area network such as Internet or a cellular network
  • Some UEs may be considered Internet-of-Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.
  • IoT Internet-of-Things
  • NB-IoT narrowband IoT
  • a scheduling entity (e.g., a BS) allocates resources for communication among some or all devices and equipment within its service area or cell.
  • the scheduling entity may be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduled communication, subordinate entities utilize resources allocated by the scheduling entity.
  • Base stations are not the only entities that may function as a scheduling entity.
  • a UE may function as a scheduling entity and may schedule resources for one or more subordinate entities (e.g., one or more other UEs) , and the other UEs may utilize the resources scheduled by the UE for wireless communication.
  • a UE may function as a scheduling entity in a peer-to-peer (P2P) network, and/or in a mesh network.
  • P2P peer-to-peer
  • UEs may communicate directly with one another in addition to communicating with a scheduling entity.
  • the methods disclosed herein comprise one or more steps or actions for achieving the methods.
  • the method steps and/or actions may be interchanged with one another without departing from the scope of the claims.
  • the order and/or use of specific steps and/or actions may be modified without departing from the scope of the claims.
  • a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members.
  • “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) .
  • determining encompasses a wide variety of actions. For example, “determining” may include calculating, computing, processing, deriving, investigating, looking up (e.g., looking up in a table, a database or another data structure) , ascertaining and the like. Also, “determining” may include receiving (e.g., receiving information) , accessing (e.g., accessing data in a memory) and the like. Also, “determining” may include resolving, selecting, choosing, establishing and the like.
  • the various operations of methods described above may be performed by any suitable means capable of performing the corresponding functions.
  • the means may include various hardware and/or software component (s) and/or module (s) , including, but not limited to a circuit, an application specific integrated circuit (ASIC) , or processor.
  • ASIC application specific integrated circuit
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • PLD programmable logic device
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • an example hardware configuration may comprise a processing system in a wireless node.
  • the processing system may be implemented with a bus architecture.
  • the bus may include any number of interconnecting buses and bridges depending on the specific application of the processing system and the overall design constraints.
  • the bus may link together various circuits including a processor, machine-readable media, and a bus interface.
  • the bus interface may be used to connect a network adapter, among other things, to the processing system via the bus.
  • the network adapter may be used to implement the signal processing functions of the PHY layer.
  • a user interface e.g., keypad, display, mouse, joystick, etc.
  • a user interface e.g., keypad, display, mouse, joystick, etc.
  • the bus may also link various other circuits such as timing sources, peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further.
  • the processor may be implemented with one or more general-purpose and/or special-purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuitry that can execute software. Those skilled in the art will recognize how best to implement the described functionality for the processing system depending on the particular application and the overall design constraints imposed on the overall system.
  • the functions may be stored or transmitted over as one or more instructions or code on a computer readable medium.
  • Software shall be construed broadly to mean instructions, data, or any combination thereof, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • Computer-readable media include both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • the processor may be responsible for managing the bus and general processing, including the execution of software modules stored on the machine-readable storage media.
  • a computer-readable storage medium may be coupled to a processor such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor.
  • the machine-readable media may include a transmission line, a carrier wave modulated by data, and/or a computer readable storage medium with instructions stored thereon separate from the wireless node, all of which may be accessed by the processor through the bus interface.
  • the machine-readable media, or any portion thereof may be integrated into the processor, such as the case may be with cache and/or general register files.
  • machine-readable storage media may include, by way of example, RAM (Random Access Memory) , flash memory, ROM (Read Only Memory) , PROM (Programmable Read-Only Memory) , EPROM (Erasable Programmable Read-Only Memory) , EEPROM (Electrically Erasable Programmable Read-Only Memory) , registers, magnetic disks, optical disks, hard drives, or any other suitable storage medium, or any combination thereof.
  • RAM Random Access Memory
  • ROM Read Only Memory
  • PROM Programmable Read-Only Memory
  • EPROM Erasable Programmable Read-Only Memory
  • EEPROM Electrical Erasable Programmable Read-Only Memory
  • registers magnetic disks, optical disks, hard drives, or any other suitable storage medium, or any combination thereof.
  • the machine-readable media may be embodied in a computer-program product.
  • a software module may comprise a single instruction, or many instructions, and may be distributed over several different code segments, among different programs, and across multiple storage media.
  • the computer-readable media may comprise a number of software modules.
  • the software modules include instructions that, when executed by an apparatus such as a processor, cause the processing system to perform various functions.
  • the software modules may include a transmission module and a receiving module. Each software module may reside in a single storage device or be distributed across multiple storage devices.
  • a software module may be loaded into RAM from a hard drive when a triggering event occurs.
  • the processor may load some of the instructions into cache to increase access speed.
  • One or more cache lines may then be loaded into a general register file for execution by the processor.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared (IR) , radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium.
  • Disk and disc include compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , floppy disk, and disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.
  • computer-readable media may comprise non-transitory computer-readable media (e.g., tangible media) .
  • computer-readable media may comprise transitory computer-readable media (e.g., a signal) . Combinations of the above should also be included within the scope of computer-readable media.
  • certain aspects may comprise a computer program product for performing the operations presented herein.
  • a computer program product may comprise a computer-readable medium having instructions stored (and/or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein, for example, instructions for performing the operations described herein and illustrated in FIG. 5.
  • modules and/or other appropriate means for performing the methods and techniques described herein can be downloaded and/or otherwise obtained by a user terminal and/or base station as applicable.
  • a user terminal and/or base station can be coupled to a server to facilitate the transfer of means for performing the methods described herein.
  • various methods described herein can be provided via storage means (e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc. ) , such that a user terminal and/or base station can obtain the various methods upon coupling or providing the storage means to the device.
  • storage means e.g., RAM, ROM, a physical storage medium such as a compact disc (CD) or floppy disk, etc.
  • CD compact disc
  • floppy disk etc.
  • any other suitable technique for providing the methods and techniques described herein to a device can be utilized.

Landscapes

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

Abstract

Certains aspects de la présente divulgation concernent des techniques de connectivité double, telles que pour induire des additions de groupe de cellules secondaires (SCG). Un procédé qui peut être réalisé par un équipement utilisateur (UE) peut comprendre la connexion à une première cellule dans une première technologie d'accès radio (RAT). L'UE mesure l'intensité de signal d'une seconde cellule dans une seconde RAT. L'UE détecte que l'intensité de signal mesurée de la seconde cellule est inférieure à un premier seuil configuré et que l'intensité de signal mesurée est égale ou supérieure à un second seuil, le second seuil étant inférieur au premier seuil configuré. L'UE transmet un rapport de mesure à la première cellule indiquant que l'intensité de signal mesurée est égale ou supérieure au premier seuil configuré sur la base de la détection.
PCT/CN2020/090136 2020-05-14 2020-05-14 Seuil relaxé pour induire des additions de groupe de cellules secondaires WO2021226904A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/090136 WO2021226904A1 (fr) 2020-05-14 2020-05-14 Seuil relaxé pour induire des additions de groupe de cellules secondaires

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/090136 WO2021226904A1 (fr) 2020-05-14 2020-05-14 Seuil relaxé pour induire des additions de groupe de cellules secondaires

Publications (1)

Publication Number Publication Date
WO2021226904A1 true WO2021226904A1 (fr) 2021-11-18

Family

ID=78526189

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/090136 WO2021226904A1 (fr) 2020-05-14 2020-05-14 Seuil relaxé pour induire des additions de groupe de cellules secondaires

Country Status (1)

Country Link
WO (1) WO2021226904A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102017708A (zh) * 2008-05-11 2011-04-13 高通股份有限公司 系统间切换的触发
CN104969616A (zh) * 2014-03-24 2015-10-07 华为终端有限公司 一种无线通信方法及无线终端
CN104969615A (zh) * 2014-03-31 2015-10-07 华为终端有限公司 一种无线通信方法及无线终端
WO2015157183A1 (fr) * 2014-04-11 2015-10-15 Qualcomm Incorporated Transmission adaptative à base de classification dans un spectre sans licence
CN110798873A (zh) * 2019-10-29 2020-02-14 维沃移动通信有限公司 一种语音服务注册方法及电子设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102017708A (zh) * 2008-05-11 2011-04-13 高通股份有限公司 系统间切换的触发
CN104969616A (zh) * 2014-03-24 2015-10-07 华为终端有限公司 一种无线通信方法及无线终端
CN104969615A (zh) * 2014-03-31 2015-10-07 华为终端有限公司 一种无线通信方法及无线终端
WO2015157183A1 (fr) * 2014-04-11 2015-10-15 Qualcomm Incorporated Transmission adaptative à base de classification dans un spectre sans licence
CN110798873A (zh) * 2019-10-29 2020-02-14 维沃移动通信有限公司 一种语音服务注册方法及电子设备

Similar Documents

Publication Publication Date Title
US11082320B2 (en) Techniques for RMSI PDCCH transmission and monitoring
US11903071B2 (en) Beam failure recovery and related timing determination techniques
WO2020082208A1 (fr) Smtc flottante de rrm basée sur un ssb dans des réseaux asynchrones
US20200413309A1 (en) Per-ssb beam switching for neighbor cell measurement in a synchronized network
EP4098033A1 (fr) Procédé de commande de puissance de liaison montante basé sur le temps d'application de signal de référence de perte de trajet (pl rs), ue et bs correspondants
US10986657B2 (en) Scheduling offset management for wireless communications
WO2020088607A1 (fr) Mesure d'informations d'état de canal (csi) avec différentes configurations de quasi-colocalisation (qcl) pour une même ressource de signal de référence de csi (csi-rs)
WO2020047800A1 (fr) Gestion de problèmes avec de petites cellules de largeur de bande
WO2021217565A1 (fr) Gestion de rapport de mesure pour réduire les défaillances de session de communication pendant un transfert intercellulaire
US20210409169A1 (en) Dynamic slot aggregation configuration
WO2021232335A1 (fr) Techniques d'amélioration des transferts dans des réseaux sans fil
WO2021212315A1 (fr) Amélioration de canal de commande de liaison montante physique pour des trous de couverture intérieurs
WO2021237494A1 (fr) Appareil et techniques de commutation de faisceau
US20210007116A1 (en) Dynamically activated channel measurement resources for cross-carrier scheduling
WO2021226904A1 (fr) Seuil relaxé pour induire des additions de groupe de cellules secondaires
WO2021139801A1 (fr) Synchronisation multicellulaire pour connectivité double et agrégation de porteuses
WO2021223044A1 (fr) Techniques de récupération à partir d'un événement de libération de cellule pour une connectivité double
WO2021243725A1 (fr) Évitement de problèmes d'accès aléatoire dans des cellules de nouvelle radio non autonomes
WO2021212488A1 (fr) Élagage des cellules dans un rapport de mesure
WO2021223203A1 (fr) Auto-adaptation d'ue pour connexion de session pdu dans un réseau autonome 5g
WO2021223132A1 (fr) Liste étendue de cellules voisines
US20210258970A1 (en) Energy per resource element ratio for non-zero power channel state information reference signals
WO2021258387A1 (fr) Réduction du coût d'itinérance dans nr

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20935917

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20935917

Country of ref document: EP

Kind code of ref document: A1