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WO2016013775A1 - Procédé de mesure d'état de canal et dispositif associé - Google Patents

Procédé de mesure d'état de canal et dispositif associé Download PDF

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Publication number
WO2016013775A1
WO2016013775A1 PCT/KR2015/006479 KR2015006479W WO2016013775A1 WO 2016013775 A1 WO2016013775 A1 WO 2016013775A1 KR 2015006479 W KR2015006479 W KR 2015006479W WO 2016013775 A1 WO2016013775 A1 WO 2016013775A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel state
measurement
unlicensed band
section
state measurement
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/KR2015/006479
Other languages
English (en)
Korean (ko)
Inventor
이경준
박규진
강승현
최우진
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KT Corp
Original Assignee
KT Corp
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
Priority claimed from KR1020150081830A external-priority patent/KR20160013506A/ko
Application filed by KT Corp filed Critical KT Corp
Publication of WO2016013775A1 publication Critical patent/WO2016013775A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Definitions

  • megacells macrocells, microcells, picocells, femtocells, small cells, RRHs, antennas, RUs, low power nodes (LPNs), points, eNBs, transmit / receive points, transmit points, and receive points are collectively referred to as base stations. do.
  • Measurement identities Contains information about an ID that connects a specific measurement object to a specific reporting configuration.
  • the terminal may apply layer 3 filtering using Equation 1 below before transmitting the measured channel state measurement result to the base station.
  • F n-1 Previously filtered measurement, except that F 0 is set to M 1 when the first measurement is received in the physical layer.
  • the terminal may transmit the result of measuring the channel state to the base station through filtering according to Equation (1).
  • the base station may check the channel state measurement result of the terminal, and set the carrier merge or dual connectivity configuration in the terminal.
  • the base station may control whether the cell or carrier configured in the base station is activated or control the addition / modification of the cell or carrier using the channel state measurement result.
  • sensing a power level of a radio channel or carrier to be used before transmitting a radio signal to avoid interference or collision between respective radio communication services may support a wireless channel access (LBT) -based wireless channel access (LBT) method for determining the availability of the corresponding radio channel or carrier.
  • LBT wireless channel access
  • LBT wireless channel access
  • LBT wireless channel access
  • a specific radio channel or carrier of the unlicensed band is in use by another wireless communication protocol or another operator, there is a possibility that it will be restricted from providing LTE / LTE-Advanced service through the corresponding band. Therefore, unlike LTE / LTE-Advanced service through a licensed band in providing an LTE / LTE-Advanced service through an unlicensed band, QoS desired by a user cannot be guaranteed.
  • 3 is a diagram for explaining an operation of a terminal performing communication using a licensed band and an unlicensed band.
  • the present invention provides a method for stably processing data retransmission that may occur in a time interval in which an unlicensed band frequency cannot be used when communication is performed in an unlicensed band cell using frequencies of an unlicensed band shared by multiple communication systems. And an apparatus.
  • the base station transmits a reference signal (RS) to an unlicensed band cell in an available period, and the terminal performs channel state measurement (eg, RSRP, RSRQ) of the corresponding cell.
  • RS reference signal
  • RSRQ channel state measurement
  • the terminal When the terminal performs channel state measurement only in an available period of an unlicensed band cell configured in the terminal, it may be difficult to accurately measure the channel state. For example, interference signals from other irregular and unexpected communication systems (eg, WLAN terminal, AP, etc.) may not be included in the channel state measurement result. In this case, the channel state measurement result of the corresponding cell may not properly reflect the actual channel state of the terminal. In particular, when the available period is short, the channel state measurement value of the corresponding cell is more likely to be incorrect.
  • interference signals from other irregular and unexpected communication systems eg, WLAN terminal, AP, etc.
  • the base station should reserve only a long time to transmit only the RS for measuring the unlicensed band cell quality of the terminals.
  • the corresponding frequency cannot be used in another RAT such as WLAN. Frequency waste occurs.
  • FIG. 5 is a view for explaining the operation of the terminal according to an embodiment of the present invention.
  • a terminal In a channel state measuring method, a terminal according to an embodiment of the present invention, receiving measurement configuration information for measuring channel state of an unlicensed spectrum cell from an base station and a type of a section in which channel state measurement is performed And measuring the channel state of the unlicensed band cell based on the measurement configuration information, and transmitting the channel state measurement result of the unlicensed band cell to the base station.
  • the type of the interval in which the UE performs channel state measurement may be divided into an available interval in which an unlicensed band cell can use an unlicensed band frequency and an unusable interval in which an unlicensed band cell cannot use an unlicensed band frequency.
  • Unavailable interval means a time interval of unlicensed band frequency occupied by another communication system or another mobile communication provider.
  • the terminal includes measuring the channel state of the unlicensed band cell based on the type of the section in which the channel state measurement is performed and the measurement configuration information (S520). For example, the terminal measures the channel state using the received measurement configuration information. In this case, the terminal distinguishes whether a point in time at which the channel state measurement operation is performed is an available section or an unavailable section and performs channel state measurement by using measurement configuration information set according to each section type. That is, the terminal may perform a channel state measurement operation classified according to the type of the section to which the channel state measurement time belongs. The terminal may obtain an accurate channel state measurement result by performing a channel state measurement operation that is set separately for each channel state measurement section.
  • the terminal performs the channel state measurement using the measurement configuration information when the corresponding unlicensed band cell is available at the time when the channel state measurement operation is performed. In this case, one or more of the aforementioned RSSI, RSRP, RSRQ, and energy detection may be performed. If the UE determines that the unlicensed band cell is not available at the time when the channel state measurement operation is performed, the terminal may not perform the channel state measurement operation. That is, the terminal primarily determines whether the unlicensed band cell is available or unusable at a time point for performing the channel state measuring operation, and performs the channel state measuring operation only when the unlicensed band cell is available. can do.
  • the measurement configuration information received by the terminal may be set differently by dividing into an available period and an unavailable period for an unlicensed band cell or frequency set as a measurement object.
  • the measurement configuration information may set a value to be measured differently according to the type of section of the time point at which the measurement is performed for the unlicensed band cell or frequency set as the measurement target.
  • the value to be measured may be set to any one of energy detection, noise level measurement, SINR, Received Signal Strength Indicator (RSSI), RSRP, and RSRQ of each corresponding frequency or cell.
  • the channel state measurement operation of the UE may be performed by performing detailed operations such as layer 3 filtering according to each of the available and unusable sections of the unlicensed band cell according to the measurement configuration information.
  • the terminal of the present invention transmits the result of measuring the channel state to the base station by the method described above.
  • the base station needs to know in which time period of the unlicensed band cell the corresponding channel state measurement result is measured.
  • the terminal of the present invention may transmit indication information indicating that the measurement result is for the measurement result performed in which section. For example, if the time point at which the channel state measurement operation is performed is an available period, the indication information may be set to 0 and stored together with the channel state measurement result. If the time point at which the channel state measurement operation is performed is not available, the indication information is set to 1 and stored together with the channel state measurement result. In transmitting the channel state measurement result to the base station, the terminal may transmit the stored indication information together according to the reporting condition of the measurement configuration information.
  • the terminal of the present invention receives measurement configuration information for measuring an unlicensed band cell or an unlicensed band frequency from a base station (S710).
  • the measurement configuration information may be received through higher layer signaling.
  • the measurement configuration information may be received in a form in which an unlicensed band is added to "MeasConfig" which is an information element (IE) of an RRC connection reconfiguration message.
  • the measurement configuration information may be received through a newly defined information element.
  • the terminal determines to which section the time point at which the channel state measurement is performed belongs (S730). If the channel state measurement is performed in the available section of the unlicensed band cell, the corresponding measurement result information and information indicating the available section may be stored. On the contrary, when the channel state measurement is performed in the unusable section of the unlicensed band cell, the corresponding measurement result information and information indicating the unusable section may be stored.
  • the base station sets the measurement configuration information for channel state measurement of an unlicensed band cell, transmits the measurement configuration information, and the type of the section where the channel state measurement is performed and the measurement configuration information. And receiving the channel state measurement result of the unlicensed band cell measured based on the measured result.
  • the base station includes transmitting the set measurement configuration information to the terminal (S820).
  • the measurement configuration information may be transmitted through higher layer signaling.
  • the measurement configuration information may be transmitted in a form in which an unlicensed band is added to "MeasConfig" which is an information element (IE) of an RRC connection reconfiguration message.
  • the measurement configuration information may be transmitted through a newly defined information element.
  • the base station includes the step of receiving the channel state measurement result of the unlicensed band cell measured based on the type of the section where the channel state measurement is performed and the measurement configuration information (S830).
  • the type of interval in which channel state measurement is performed may be divided into an available interval in which an unlicensed band cell can use an unlicensed band frequency and an unavailable interval in which an unlicensed band cell cannot use an unlicensed band frequency.
  • the channel state measurement results include the measurement configuration information divided according to the type of the section in which the channel state measurement is performed and the result measured according to the divided measurement operation based on the type of the section in which the channel state measurement is performed.
  • the channel state measurement result may include result information measured by using measurement configuration information of the available section when the time point for the channel state measurement belongs to the available section.
  • the channel state measurement result may include RSSI, Reference Signal Received Power (RSRP), or Reference Signal Received Quality (RSRQ) measurement information in an unlicensed band cell or frequency.
  • RSSI Reference Signal Received Power
  • RSRP Reference Signal Received Power
  • RSSRQ Reference Signal Received Quality
  • the channel state measurement results are RSSI, RSRP (Reference Signal) irrespective of RSSI, energy detection, noise level measurement, and reference signal transmission from the base station measured according to the measurement method for each section set by the measurement configuration information. It may include one or more results of the received power (Received Power) and RSRQ (Reference Signal Received Quality) measurement results.
  • the channel state measurement result may include indication information indicating the type of the section in which the channel state measurement is performed.
  • the indication information may indicate information on a time point at which the corresponding channel state measurement result is measured. As described with reference to FIG. 7, the indication information may be included in the channel state measurement result or may be separately received.
  • the indication information may include information indicating whether the corresponding channel state measurement result is measured in the available section or in the unavailable section. For example, the indication information may be set to 1 bit having values of 0 and 1, and each value may indicate an available period and an unavailable period of the unlicensed band cell.
  • the base station of the present invention may perform all the operations of the base station required to carry out the above-described present invention.
  • the user terminal 900 includes a receiver 930 and a channel state for receiving measurement configuration information for measuring a channel state of an unlicensed spectrum cell from a base station. And a control unit 910 for measuring a channel state of an unlicensed band cell and a transmitter 920 for transmitting a channel state measurement result of the unlicensed band cell to a base station based on the type of measurement interval and measurement configuration information.
  • the receiver 930 receives measurement configuration information for measuring a channel state of an unlicensed band cell from a base station.
  • the receiver 930 may receive measurement configuration information through higher layer signaling.
  • the measurement configuration information may be received in a form in which an unlicensed band is added to "MeasConfig" which is an information element (IE) of an RRC connection reconfiguration message.
  • the measurement configuration information may be received through a newly defined information element.
  • the controller 910 when the corresponding unlicensed band cell is available at the time when the channel state measurement operation is performed, the controller 910 performs channel state measurement using the measurement configuration information. In this case, one or more of the aforementioned RSSI, RSRP, RSRQ, and energy detection may be performed. If it is determined that the unlicensed band cell is not available at the time when the channel state measurement operation is performed, the controller 910 may not perform the channel state measurement operation. That is, the controller 910 primarily determines whether the unlicensed band cell is an available or unusable section at a time point for performing a channel state measurement operation, and measures the channel state only when the unlicensed band cell is an available section. You can perform the operation.
  • controller 910 may control all operations of the base station required to perform the above-described operation of the present invention.
  • the transmitter 920 transmits the measured channel state measurement result to the base station.
  • the channel state measurement result may include indication information indicating information on a section type in which the corresponding measurement result is performed.
  • the transmitter 920 transmits uplink control information, data, and a message to a base station through a corresponding channel.
  • FIG. 10 is a view for explaining the configuration of a base station according to another embodiment of the present invention.
  • the base station 1000 transmits a control unit 1010 and measurement configuration information for setting measurement configuration information for channel state measurement of an unlicensed spectrum cell.
  • the controller 1010 sets measurement configuration information for channel state measurement of an unlicensed spectrum cell.
  • the measurement configuration information may be set separately by the type of the section in which the channel state measurement is performed.
  • the controller 1010 may set a measurement object for the unlicensed band to one or a plurality of unlicensed band frequency (s).
  • the controller 1010 may divide the measurement configuration information into an available period and an unavailable period according to an unlicensed band cell or frequency set as a measurement object.
  • the controller 1010 may differently set a value to be measured according to the type of section of the time point at which the measurement is performed for the unlicensed band cell or frequency set as the measurement target.
  • the value to be measured may be set to any one of energy detection, noise level measurement, SINR, RSSI, RSRP, and RSRQ of each corresponding frequency or cell.
  • controller 1010 controls the overall operation of the base station required to perform the above-described present invention.
  • the receiver 1030 receives the channel state measurement result of the unlicensed band cell measured based on the type of the section where the channel state measurement is performed and the measurement configuration information. That is, the channel state measurement result includes measurement results according to the divided measurement operation based on the measurement configuration information set and the type of the section in which the channel state measurement is performed by being divided by the type of the section in which the channel state measurement is performed.
  • the channel state measurement result may include result information measured by using measurement configuration information of the available section when the time point for the channel state measurement belongs to the available section.
  • the channel state measurement result may include RSSI, Reference Signal Received Power (RSRP), or Reference Signal Received Quality (RSRQ) measurement information in an unlicensed band cell or frequency.
  • RSSI Reference Signal Received Power
  • RSRP Reference Signal Received Power
  • RSSRQ Reference Signal Received Quality
  • the channel state measurement result may include result information measured using the measurement configuration information of the unavailable period when the time point for the channel state measurement belongs to the unavailable period.
  • the channel state measurement result may include RSSI, energy detection, or noise level measurement information in an unlicensed band cell or frequency.
  • the channel state measurement result may determine whether it is an available section, and may include only measurement results (eg, RSRP and RSRQ) for the channel state measured only in the available section. That is, the terminal may determine whether the corresponding unlicensed band cell is an available period at a time point for measuring the channel state, and perform the channel state measurement operation only in the available period.
  • measurement results eg, RSRP and RSRQ
  • the channel state measurement results are RSSI, RSRP (Reference Signal) irrespective of RSSI, energy detection, noise level measurement, and reference signal transmission from the base station measured according to the measurement method for each section set by the measurement configuration information. It may include one or more results of the received power (Received Power) and RSRQ (Reference Signal Received Quality) measurement results.
  • the channel state measurement result may include a result obtained by dividing a detailed operation such as layer 3 filtering according to each of an available period and an unavailable period of the unlicensed band cell.
  • the receiver 1030 may further receive indication information indicating the type of the section in which the channel state measurement is performed.
  • the indication information may indicate information on a time point at which the corresponding channel state measurement result is measured.
  • the indication information may be included in the channel state measurement result or may be separately received.
  • the indication information may include information indicating whether the corresponding channel state measurement result is measured in the available section or in the unavailable section.
  • the present invention by performing channel state measurement for each section of an unlicensed band cell, an effect of accurately identifying a state of a corresponding frequency band at a side of a terminal and using an unlicensed band cell of higher quality is possible. To provide.
  • the present invention can determine the utilization state (load information) of the corresponding unlicensed band frequency at the terminal location based on the reported measurement results, thereby providing the effect of setting the optimal unlicensed band cell to the terminal.

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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 et un dispositif pour mesurer, par un terminal, un état de canal d'un spectre de fréquences précis. Plus précisément, la présente invention concerne un procédé pour mesurer avec précision un état de canal d'une cellule ou d'une porteuse à l'aide d'un spectre non autorisé, et un procédé pour rapporter, à une station de base, des informations d'état de canal mesuré. En particulier, la présente invention concerne un procédé et un dispositif pour mesurer, par un terminal, un état de canal, le procédé comprenant les étapes consistant : à recevoir, d'une station de base, des informations de configuration de mesure pour mesurer un état de canal d'une cellule de spectre non autorisé ; à mesurer l'état de canal de la cellule de spectre non autorisé sur la base du type de section dans laquelle l'état de canal est mesuré et des informations de configuration de mesure ; à transmettre, à la station de base, le résultat de mesure de l'état de canal de la cellule de spectre non autorisé, la cellule de spectre non autorisé utilisant une fréquence d'un spectre non autorisé partagé par un ou par plusieurs systèmes de communication.
PCT/KR2015/006479 2014-07-25 2015-06-25 Procédé de mesure d'état de canal et dispositif associé Ceased WO2016013775A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20140095000 2014-07-25
KR10-2014-0095000 2014-07-25
KR10-2015-0081830 2015-06-10
KR1020150081830A KR20160013506A (ko) 2014-07-25 2015-06-10 채널상태 측정 방법 및 그 장치

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WO2016013775A1 true WO2016013775A1 (fr) 2016-01-28

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019212247A1 (fr) * 2018-05-04 2019-11-07 Lg Electronics Inc. Procédé et appareil d'amélioration d'une règle de mesure sur une fréquence sans licence dans un système de communication sans fil
WO2020192713A1 (fr) * 2019-03-28 2020-10-01 中兴通讯股份有限公司 Procédé, dispositif et système de mesure de canal, et support d'informations
CN111757370A (zh) * 2019-03-28 2020-10-09 普天信息技术有限公司 目标数据测量方法及装置
US11894879B2 (en) 2018-06-25 2024-02-06 Beijing Xiaomi Mobile Software Co., Ltd. Channel measurement method and apparatus, terminal, base station and storage medium

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100190488A1 (en) * 2009-01-29 2010-07-29 Lg Electronics Inc. Method of Reporting An Aggregated Measurement in Wireless Communication System
US20120263123A1 (en) * 2011-04-12 2012-10-18 Renesas Mobile Corporation Sensing configuration in carrier aggregation scenarios
WO2013006988A1 (fr) * 2011-07-14 2013-01-17 Renesas Mobile Corporation Procédés et appareils de fourniture d'une technique de partage de temps flexible sur une bande sans licence d'un système
WO2013059999A1 (fr) * 2011-10-26 2013-05-02 Renesas Mobile Corporation Mesures flexibles dans une bande sans licence
US20130195073A1 (en) * 2012-01-30 2013-08-01 Renesas Mobile Corporation Low-Cost LTE System with Distributed Carrier Aggregation on the Unlicensed Band

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100190488A1 (en) * 2009-01-29 2010-07-29 Lg Electronics Inc. Method of Reporting An Aggregated Measurement in Wireless Communication System
US20120263123A1 (en) * 2011-04-12 2012-10-18 Renesas Mobile Corporation Sensing configuration in carrier aggregation scenarios
WO2013006988A1 (fr) * 2011-07-14 2013-01-17 Renesas Mobile Corporation Procédés et appareils de fourniture d'une technique de partage de temps flexible sur une bande sans licence d'un système
WO2013059999A1 (fr) * 2011-10-26 2013-05-02 Renesas Mobile Corporation Mesures flexibles dans une bande sans licence
US20130195073A1 (en) * 2012-01-30 2013-08-01 Renesas Mobile Corporation Low-Cost LTE System with Distributed Carrier Aggregation on the Unlicensed Band

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019212247A1 (fr) * 2018-05-04 2019-11-07 Lg Electronics Inc. Procédé et appareil d'amélioration d'une règle de mesure sur une fréquence sans licence dans un système de communication sans fil
US11894879B2 (en) 2018-06-25 2024-02-06 Beijing Xiaomi Mobile Software Co., Ltd. Channel measurement method and apparatus, terminal, base station and storage medium
WO2020192713A1 (fr) * 2019-03-28 2020-10-01 中兴通讯股份有限公司 Procédé, dispositif et système de mesure de canal, et support d'informations
CN111757370A (zh) * 2019-03-28 2020-10-09 普天信息技术有限公司 目标数据测量方法及装置

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