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WO2018174547A1 - Procédé et appareil pour effectuer une mesure - Google Patents

Procédé et appareil pour effectuer une mesure Download PDF

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Publication number
WO2018174547A1
WO2018174547A1 PCT/KR2018/003272 KR2018003272W WO2018174547A1 WO 2018174547 A1 WO2018174547 A1 WO 2018174547A1 KR 2018003272 W KR2018003272 W KR 2018003272W WO 2018174547 A1 WO2018174547 A1 WO 2018174547A1
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WIPO (PCT)
Prior art keywords
npbch
mib
measurement
information
rsrp
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Ceased
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PCT/KR2018/003272
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English (en)
Korean (ko)
Inventor
안준기
박창환
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LG Electronics Inc
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LG Electronics Inc
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Publication of WO2018174547A1 publication Critical patent/WO2018174547A1/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management

Definitions

  • the present invention relates to wireless communication, and more particularly, to a method for performing measurement for radio resource management (RRM) in a wireless communication system and an apparatus using the same.
  • RRM radio resource management
  • the Internet of Things refers to a technology in which various things including humans transmit data over a network without requiring interaction with humans.
  • the 3rd Generation Partnership Project (3GPP) is introducing narrowband (IB) -IoT standardization to provide IoT connectivity.
  • 3GPP LTE supports a minimum bandwidth of 20 MHz.
  • NB-IoT is expected to support 180 kHz or higher bandwidth.
  • NB-IoT supports three operation modes: in-band, guard band and stand-alone.
  • In-band mode operates by allocating some of the resources in the Long-Term Evolution (LTE) band to the NB-IoT.
  • Guard band mode utilizes the guard band band of LTE.
  • Stand-alone mode operates by allocating some carriers in the Global System for Mobile Communications (GSM) band.
  • GSM Global System for Mobile Communications
  • NB-IoT it is necessary to calculate the measurement value for radio resource management (RRM).
  • RRM radio resource management
  • the RRM measurement is used for path loss estimation, uplink transmission power control, and the like. Since NB-IoT uses extremely limited bandwidth, it may take a long time to perform RRM measurements with limited bandwidth. A method for reducing the RRM measurement time and measuring more accurately is proposed.
  • the present invention provides a method of performing measurement for radio resource management (RRM) in a wireless communication system and an apparatus using the same.
  • RRM radio resource management
  • a method of performing measurement for radio resource management (RRM) in a wireless communication system receives a narrowband physical broadcast channel (NPBCH) carrying a master information block (MIB), the wireless device receives the NPBCH It includes measuring a reference signal received power (RSRP) based on.
  • NPBCH narrowband physical broadcast channel
  • MIB master information block
  • RSRP reference signal received power
  • an apparatus for performing measurements for radio resource management (RRM) in a wireless communication system includes a transceiver for transmitting and receiving wireless signals and a processor coupled to the transceiver.
  • the processor receives a narrowband physical broadcast channel (NPBCH) carrying a master information block (MIB) through the transceiver, and measures a reference signal received power (RSRP) through the transceiver based on the NPBCH.
  • NPBCH narrowband physical broadcast channel
  • MIB master information block
  • RSRP reference signal received power
  • 1 shows the allocation of a DL channel in NB-IoT.
  • FIG. 2 shows a measuring method according to an embodiment of the present invention.
  • FIG. 3 shows a measuring method according to another embodiment of the present invention.
  • FIG. 4 is a block diagram illustrating a wireless communication system in which an embodiment of the present invention is implemented.
  • Wireless devices may be fixed or mobile, and may include user equipment (UE), mobile station (MS), mobile terminal (MT), user terminal (UT), subscriber station (SS), and personal digital assistant (PDA). ), A wireless modem, a handheld device, or other terms.
  • the wireless device may be a device that supports only data communication, such as a machine-type communication (MTC) device.
  • MTC machine-type communication
  • a base station generally refers to a fixed station that communicates with a wireless device, and may be referred to by other terms such as an evolved-NodeB (eNB), a base transceiver system (BTS), and an access point. Can be.
  • eNB evolved-NodeB
  • BTS base transceiver system
  • the present invention is applied based on 3GPP long term evolution (LTE) based on 3rd Generation Partnership Project (3GPP) Technical Specification (TS).
  • LTE long term evolution
  • 3GPP 3rd Generation Partnership Project
  • TS Technical Specification
  • Narrowband-Internet of Things refers to a system that supports smaller bandwidths within the bandwidth of 3GPP LTE.
  • 3GPP LTE has a subcarrier spacing of 15 kHz and supports a bandwidth of at least 20 MHz.
  • the NB-IoT may have a subcarrier spacing of 15 kHz or 3.75 kHz or less.
  • NB-IoT can support 3 kHz or more bandwidth. This is merely an example, and the proposed embodiment may be applied to a wireless communication network supporting various bandwidths.
  • DL downlink
  • UL uplink
  • the subframe includes a plurality of orthogonal frequency division multiplexing (OFDM) symbols, and a time taken for transmitting one subframe is called a transmission time interval (TTI).
  • TTI may be 1 ms.
  • One subframe includes 14 OFDM symbols in a normal cyclic prefix and one subframe includes 12 OFDM symbols in an extended CP.
  • the DL physical channel includes a narrowband physical broadcast channel (NPBCH), a narrowband physical downlink shared channel (NPDSCH), and a narrowband physical downlink control channel (NPDCCH).
  • the physical signal includes a narrowband reference signal (NRS), a narrowband primary synchronization signal (NPSS), and a narrowband secondary synchronization signal (NSSS).
  • NPBCH carries essential system information called a master information block (MIB).
  • MIB includes information about a system frame number, an operation mode, scheduling information of a subsequent system information block (SIB), and the like.
  • SIB system information block
  • NPBCH can be transmitted repeatedly up to 8 times to improve coverage.
  • NPDSCH carries DL data. NPDSCH may be repeatedly transmitted over a plurality of subframes.
  • NPDCCH carries DL scheduling information for NPDSCH or UL scheduling information for UL transmission.
  • the wireless device needs to monitor all possible areas allowed for the NPDCCH, and the area for monitoring the NPDCCH in the DL subframe is called a search space.
  • NPDCCH and NPDSCH are transmitted in different subframes.
  • 1 shows the allocation of a DL channel in NB-IoT.
  • a radio frame includes 10 subframes with indices from 0 to 9.
  • NPBCH is transmitted in the first subframe of every radio frame (subframe # 0)
  • NPSS is transmitted in the sixth subframe of every radio frame (subframe # 5)
  • NSSS is transmitted in the last subframe of every two radio frames ( Subframe # 9).
  • NPSS and NSSS may be transmitted on 12 subcarriers having a subcarrier spacing of 15 kHz.
  • a sequence dp (n) for NPSS may be generated from a Zadoff-Chu sequence having a length of 11 as follows.
  • l 3,4, .., 13.
  • S (l) ⁇ 1,1,1,1, -1, -1,1,1,1, -1,1 ⁇ .
  • the sequence ds (n) for NSSS may be generated from the following Zadoff-Chu sequence.
  • N PCI is a physical cell identifier (PCI) of a cell.
  • the binary sequence b q (m) is defined as follows according to the q value.
  • the sequence ds (n) is mapped and transmitted to 11 remaining OFDM symbols except the first 3 of 14 OFDM symbols in a subframe. Since 12 subcarriers are used in each OFDM symbol, the sequence ds (n) is transmitted through a total of 132 subcarriers in one subframe.
  • NB-IoT supports three modes of operation: in-band, guard band, and stand-alone.
  • In-band mode operates by allocating a portion of the 3GPP LTE band to the NB-IoT.
  • Guard band mode utilizes the guard frequency band of 3GPPP LTE, and the NB-IoT carrier is arranged as close as possible to the edge subcarrier of LTE.
  • Stand-alone mode operates by separately assigning some carriers in the Global System for Mobile Communications (GSM) band.
  • GSM Global System for Mobile Communications
  • the NB-IoT device searches for an anchor carrier in units of 100 kHz for initial synchronization.
  • the anchor carrier center frequencies of the in-band and guard bands are located within ⁇ 7.5 kHz from the 100 kHz channel raster.
  • the anchor carrier is located only in a specific physical resource block (PRB) in the 3GPP LTE band.
  • the anchor carrier may be called other names such as primary carrier, serving cell, serving carrier.
  • the anchor carrier is a carrier for which the wireless device searches for NPBCH, NPSS, and NSSS, and the non-anchor carrier is a carrier that is not an anchor carrier.
  • the wireless device may operate on a plurality of carriers.
  • a carrier is a frequency band in which a system band or a wireless device operates, and may be defined as a center frequency and a bandwidth.
  • each carrier may be a frequency band corresponding to one resource block (RB).
  • RB resource block
  • the NB-IoT carrier may be set in some bands or guard bands of a band that the existing LTE cell uses for data communication. Alternatively, the NB-IoT carrier may be independently set to a band not used by the LTE cell.
  • NRS for NB-IoT is used by a wireless device to calculate a measurement for radio resource management (RRM).
  • the measurement value may include at least one of a reference signal received power (RSRP), a received signal strength indicator (RSSI), and a reference signal received quality (RSRQ).
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • RSSQ reference signal received quality
  • the NRS is transmitted at 1 RB in a subframe, and the density per subframe is so small that it needs to be measured for many subframes in order to calculate the measurement of the desired quality. This takes a lot of measurement time, and the measurement may not accurately represent the DL quality at a particular point in time.
  • the measurement value exemplarily describes RSRP
  • the DL signal for RSRP measurement includes at least one of NPSS, NSSS, NPBCH, CRS (cell specific reference signal), PRS (Positional reference signal), PSS, SSS, and PBCH. can do.
  • the DL signal may be transmitted at the same or larger bandwidth as the NRS.
  • FIG. 2 shows a measuring method according to an embodiment of the present invention.
  • the wireless device receives the measurement setting.
  • the wireless device performs the measurement by using the DL signal and the NRS based on the measurement configuration, and obtains the RSRP.
  • the measurement setting may include information about a DL signal used for RSRP measurement.
  • the measurement configuration may be transmitted through a radio resource control (RRC) message, a medium access control (MAC) message, an NPDSCH, or the like.
  • RRC radio resource control
  • MAC medium access control
  • NPDSCH or the like.
  • the measurement setup may include information indicating whether to use the DL signal for RSRP measurement. This information may include a flag bit indicating whether the DL signal is to be used for actual RSRP measurement.
  • the network needs to know if the wireless device is using the DL signal for RSRP measurement to efficiently utilize the reported RSRP measurement. It is known that the network does not use the DL signal for RSRP measurement. If the wireless device measures and reports the RSRP based on the DL signal arbitrarily, the network and the wireless device may determine the channel state differently. To prevent this mismatch, the network can directly inform the wireless device whether a particular DL signal can be used for RSRP measurements.
  • the measurement setup may include information about the transmit power of the DL signal to be used for RSRP measurement. If the transmission power of the NRS and DL signals is different, the wireless device simply cannot add the received values of the NRS and DL signals to obtain a meaningful RSRP measurement. Therefore, the network may inform the wireless device of the transmission power information of the DL signal to be used for RSRP measurement. More specifically, the transmission power information of the DL signal includes information on the transmission power value of the DL signal, the relative value of the transmission power of the DL signal to the transmission power of the NRS, whether the DL signal is transmitted at the same transmission power as the NRS, and the like. can do. Alternatively, the relative transmit power value between the DL signal and the NRS may be fixed to the same or a specific value.
  • the measurement setup may include information on whether coherent combining of the DL signal and the NRS is possible. If the DL signal and the NRS are transmitted using the same antenna port and the same precoding, the wireless device may estimate the RSRP value of each signal and add these values to obtain an average RSRP value. By coherently combining the two signals to obtain an RSRP value, the noise suppression effect can be increased. Information on whether coherent coupling is possible may be indicated by using the same antenna port, using the same precoding, and whether the QCL (Quasi-co Located). Alternatively, a type of DL signal capable of coherent combining with NRS may be defined in advance.
  • the measurement setting may include information about the frequency band of the DL signal to be used for RSRP measurement.
  • the NB-IoT device uses only a bandwidth corresponding to 1 RB for DL reception, but depending on the capability of the device, a larger bandwidth can be used for RSRP measurement.
  • the network tells the wireless device the bandwidth of the DL signal to use for RSRP measurements.
  • the wireless device can improve the RSRP measurement accuracy by measuring the RSRP in a band larger than the DL reception bandwidth using the given bandwidth.
  • the measurement may be performed using only a predetermined specific DL signal such as CRS and PRS.
  • the measurement setting may include information about a neighboring carrier or a non-anchor carrier as well as a serving carrier (eg, anchor carrier) to which the wireless device intends to operate an RRM.
  • the wireless device can increase the measurement accuracy by measuring RSRP using DL signals received through the peripheral carriers or the peripheral non-anchor carriers.
  • the network may provide carrier information on peripheral and / or non-anchor carriers that the wireless device may use together for RSRP measurement / reporting.
  • Carrier information may include carrier index and / or frequency information.
  • RSRP measurements on peripheral and / or non-anchor carriers only certain signals, such as NRS, may be used.
  • the power offset value of the non-anchor carrier NRS relative to the anchor carrier NRS may be provided.
  • the signal used for RRM measurement through the measurement configuration may be NPSS / NSSS / NPBCH of an anchor carrier or NRS of a non-anchor carrier.
  • the measurement setting may include information about neighboring cells.
  • the wireless device performs RRM measurements on neighboring cells for cell reselection as well as cells (or camp-on cells) for which an RRC connection is currently established.
  • operations related to DL signals (or additional available carriers) that can be further used for RSRP measurements can be applied to any neighboring cell.
  • the network may provide neighboring cell information for performing the RRM measurement to the wireless device.
  • the SIB (system information block) transmitted on the NPDSCH has a different radio frame in which the SIB is transmitted according to the number of repetitions.
  • the number of repetitions of the SIB is provided to the wireless device through the MIB on the NPBCH. This means that if the wireless device does not receive the NPBCH of the neighboring cell, it cannot receive the SIB of the neighboring cell and cannot use it for RSRP measurement. This is because the wireless device cannot know the timing of the radio frame in which the SIB is transmitted.
  • the measurement setup may include information about the number of repetitions of the SIB for the peripheral carrier (or peripheral cell).
  • subframes in which the NRS can be transmitted may be configured as DL valid subframes.
  • the DL effective subframe may mean a subframe configured to enable DL transmission to the NB-IoT device or a subframe in which the NB-IoT device can expect the NRS to be transmitted.
  • Information about the DL valid subframe may be included in the SIB in the form of a bitmap.
  • the number of antenna ports over which the NRS can be transmitted can also be set for each carrier.
  • the measurement setup may include information about the DL effective subframe for the neighbor carrier (or neighbor cell) and the antenna port of the NRS for the neighbor carrier (or neighbor cell).
  • Wireless devices can increase measurement accuracy by receiving NRSs on more carriers and using them to calculate measurement values. More specifically, the measurement setting may include at least one of the following fields.
  • a field indicating whether or not the neighbor carrier (or carrier group or cell group) is assumed to be set to the same DL effective subframe as the anchor carrier eg 1-bit flag
  • a field indicating whether the DL valid subframes of the neighbor carrier (or carrier group or cell group) include the DL valid subframe of the anchor carrier eg 1-bit flag
  • a field indicating whether or not to assume that the number of NRS antenna ports of the peripheral carrier group or all the peripheral carriers is equal to the number of NRS antenna ports of the anchor carrier eg 1-bit flag
  • a field indicating whether or not to assume that the number of NRS antenna ports of the peripheral carrier group or all peripheral carriers is equal to or greater than the number of NRS antenna ports of the anchor carrier eg 1-bit flag.
  • a field indicating whether to assume that the number of NRS antenna ports of a peripheral carrier group or all peripheral carriers is equal to or greater than a specific number of NRS antenna ports.
  • the measurement setup may include at least one of the following fields.
  • CRS-related information includes the CRS scrambling sequence ID, whether the CRS ID and anchor carrier ID are the same, the number of CRS TX antenna ports, the subframe in which the CRS is transmitted, the symbol in which the CRS is transmitted, the CRS transmission bandwidth, the subcarrier in which the CRS is transmitted, and the NRS. Frequency offset between subcarriers over which / NPSS / NSSS is transmitted.
  • the non-anchor carrier related information includes the center frequency (or PRB index) of the non-anchor carrier, the CRS related information of the non-anchor carrier, the NRS related information of the non-anchor carrier, and the non-anchor relative to the NRS of the anchor carrier of the neighboring cell.
  • NRS power offset to the carrier includes the center frequency (or PRB index) of the non-anchor carrier, the CRS related information of the non-anchor carrier, the NRS related information of the non-anchor carrier, and the non-anchor relative to the NRS of the anchor carrier of the neighboring cell.
  • the measurement configuration may include information indicating whether the CRS / NRS configuration of the neighbor cell (or group of neighbor cells) is the same as the serving cell. More specifically, the CRS / NRS configuration of the neighbor cell indicates whether the operation mode, the number of NRS antenna ports, the number of CRS antenna ports, the CRS power offset relative to the NRS, and whether the DL valid subframe is the same as the DL valid subframe of the serving cell. May contain information.
  • the measurement setting may include the CRS / NRS setting of the neighbor cell.
  • the DL valid subframe may be the same as or included in the actual DL valid subframe of the actual neighbor cell (or the actual neighbor cell group).
  • the wireless device determines the RRM measurement of the neighboring cell. Can only be performed at anchor carrier frequency. This is to reduce the complexity of changing the reception frequency by the wireless device to the anchor carrier of the neighbor cell to measure the RRM of the neighbor cell.
  • FIG. 3 shows a measuring method according to another embodiment of the present invention.
  • step S310 the wireless device receives the NPBCH carrying the MIB.
  • step S320 the wireless device measures RSRP based on the NPBCH.
  • the wireless device may measure RSRP based on the NPDSCH carrying the SIB.
  • the wireless device may receive the measurement setting according to the embodiment of FIG. 2 and measure the RSRP based on the measurement setting.
  • a transport block size For an NPBCH carrying an MIB or an NPDSCH carrying an SIB, a transport block size (TBS), a number of coded bits, a transmission resource, a scrambling sequence, and the like follow a predetermined rule or change quasi-statically. Therefore, if the wireless device decodes the MIB and / or SIB for the carrier (or cell) for which RSRP is to be measured, then the NPBCH / NPDSH received thereafter undergoes re-encoding, scrambling, and modulation processes according to the rules that previously decoded successfully. After regenerating, the channel can be used as a reference signal for RSRP measurement.
  • the wireless device may measure RSRP based on the plurality of NPBCH / NPDSCH received during the plurality of transmission intervals.
  • the network may provide the wireless device with update information regarding the section in which the MIB and / or SIB is not changed.
  • the update information may indicate that a change in a value tag indicating a version of the MIB / SIB is ignored.
  • the update information may include a branch indicating that the MIB / SIB is changed.
  • the update information may be included in the MIB and / or SIB. Alternatively, the update information may be included in the measurement setting.
  • FIG. 4 is a block diagram illustrating a wireless communication system in which an embodiment of the present invention is implemented.
  • the wireless device 50 includes a processor 51, a memory 52, and a transceiver 53.
  • the memory 52 is connected to the processor 51 and stores various instructions executed by the processor 51.
  • the transceiver 53 is connected to the processor 51 to transmit and / or receive a radio signal.
  • the processor 51 implements the proposed functions, processes and / or methods. In the above-described embodiment, the operation of the wireless device may be implemented by the processor 51. When the above-described embodiment is implemented as software instructions, the instructions may be stored in the memory 52 and executed by the processor 51 to perform the above-described operations.
  • Base station 60 includes a processor 61, a memory 62, and a transceiver 63.
  • Base station 60 may operate in an unlicensed band.
  • the memory 62 is connected to the processor 61 and stores various instructions executed by the processor 61.
  • the transceiver 63 is connected to the processor 61 to transmit and / or receive a radio signal.
  • the processor 61 implements the proposed functions, processes and / or methods. In the above-described embodiment, the operation of the base station may be implemented by the processor 61.
  • the processor may include application-specific integrated circuits (ASICs), other chipsets, logic circuits, and / or data processing devices.
  • the memory may include read-only memory (ROM), random access memory (RAM), flash memory, memory card, storage medium and / or other storage device.
  • the transceiver may include baseband circuitry for processing wireless signals.
  • the above-described technique may be implemented as a module (process, function, etc.) for performing the above-described function.
  • the module may be stored in memory and executed by a processor.
  • the memory may be internal or external to the processor and may be coupled to the processor by various well known means.

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

Abstract

La présente invention concerne un procédé permettant d'effectuer une mesure pour une gestion de ressources radio (RRM) dans un système de communications sans fil, et un appareil l'utilisant. L'appareil reçoit un canal de diffusion physique à bande étroite (NPBCH) portant un bloc d'informations maître (MIB), et mesure la puissance reçue de signal de référence (RSRP) sur la base du NPBCH.
PCT/KR2018/003272 2017-03-21 2018-03-21 Procédé et appareil pour effectuer une mesure Ceased WO2018174547A1 (fr)

Applications Claiming Priority (6)

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US201762474584P 2017-03-21 2017-03-21
US62/474,584 2017-03-21
US201762481695P 2017-04-05 2017-04-05
US62/481,695 2017-04-05
US201762501043P 2017-05-03 2017-05-03
US62/501,043 2017-05-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020167546A1 (fr) * 2019-02-15 2020-08-20 Qualcomm Incorporated Mesures pour des dispositifs de l'internet des objets à bande étroite
CN112272076A (zh) * 2018-09-29 2021-01-26 上海推络通信科技合伙企业(有限合伙) 一种被用于无线通信的通信节点中的方法和装置
US11212019B2 (en) * 2017-03-23 2021-12-28 Qualcomm Incorporated Techniques and apparatuses for signal quality measurements for narrowband internet of things (NB-IoT) devices

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017019133A1 (fr) * 2015-07-27 2017-02-02 Intel IP Corporation Système et procédés de fonctionnement d'un système pour la lte à bande étroite destinée à l'internet des objets cellulaire
WO2017039373A1 (fr) * 2015-09-02 2017-03-09 Lg Electronics Inc. Procédé et appareil d'indication de décalage de fréquence centrale pour ue à bande étroite dans un système de communications sans fil

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017019133A1 (fr) * 2015-07-27 2017-02-02 Intel IP Corporation Système et procédés de fonctionnement d'un système pour la lte à bande étroite destinée à l'internet des objets cellulaire
WO2017039373A1 (fr) * 2015-09-02 2017-03-09 Lg Electronics Inc. Procédé et appareil d'indication de décalage de fréquence centrale pour ue à bande étroite dans un système de communications sans fil

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "On NB-IoT UE measurements on anchor carriers", R1-1701896, 3GPP TSG RAN #88, 6 February 2017 (2017-02-06), Athens, Greece, XP051209059 *
ERICSSON: "On the performance of MIB-NB and SIB1-NB acquisition", RL-1701895, 3GPP TSG-RAN #88, 6 February 2017 (2017-02-06), Athens, Greece, XP051209058 *
ZTE: "Remaining issues on non-anchor PRB enhancements for NB-IoT", R1-1701910, 3GPP TSG RAN WG1 MEETING #88, 6 February 2017 (2017-02-06), Athens, Greece, XP051209073 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11212019B2 (en) * 2017-03-23 2021-12-28 Qualcomm Incorporated Techniques and apparatuses for signal quality measurements for narrowband internet of things (NB-IoT) devices
CN112272076A (zh) * 2018-09-29 2021-01-26 上海推络通信科技合伙企业(有限合伙) 一种被用于无线通信的通信节点中的方法和装置
CN112272076B (zh) * 2018-09-29 2022-03-29 上海朗帛通信技术有限公司 一种被用于无线通信的通信节点中的方法和装置
US12231364B2 (en) 2018-09-29 2025-02-18 Shanghai Langbo Communication Technology Company Limited Method and device used in communication node for wireless communication
WO2020167546A1 (fr) * 2019-02-15 2020-08-20 Qualcomm Incorporated Mesures pour des dispositifs de l'internet des objets à bande étroite
CN113475106A (zh) * 2019-02-15 2021-10-01 高通股份有限公司 窄带物联网设备的测量
US11558766B2 (en) 2019-02-15 2023-01-17 Qualcomm Incorporated Measurements for narrow-band internet of things devices

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