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WO2018176634A1 - Procédé et appareil de planification de liaison montante basés sur une porteuse sans licence - Google Patents

Procédé et appareil de planification de liaison montante basés sur une porteuse sans licence Download PDF

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Publication number
WO2018176634A1
WO2018176634A1 PCT/CN2017/088307 CN2017088307W WO2018176634A1 WO 2018176634 A1 WO2018176634 A1 WO 2018176634A1 CN 2017088307 W CN2017088307 W CN 2017088307W WO 2018176634 A1 WO2018176634 A1 WO 2018176634A1
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WIPO (PCT)
Prior art keywords
base station
unlicensed carrier
terminal device
configuration information
unlicensed
Prior art date
Application number
PCT/CN2017/088307
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English (en)
Chinese (zh)
Inventor
李国荣
李晓翠
张莉莉
Original Assignee
华为技术有限公司
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.)
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Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201780049161.1A priority Critical patent/CN109565698B/zh
Publication of WO2018176634A1 publication Critical patent/WO2018176634A1/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

Definitions

  • the present application relates to communication technologies, and in particular, to an uplink scheduling method and apparatus based on an unlicensed carrier.
  • LAA Licensed-Assisted Access
  • LTE Long Term Evolution
  • CA carrier aggregation
  • the unlicensed spectrum can be applied not only in downlink transmission but also in uplink transmission.
  • the base station needs to determine an unlicensed spectrum for the terminal device, and the terminal device transmits data on the idle resource of the unlicensed carrier determined by the base station.
  • the base station randomly allocates an unlicensed carrier for data transmission, and if the unlicensed carrier is occupied by its terminal device, the terminal device cannot send data, and needs to wait for data transmission, and adds the above data. Transmission delay and channel overhead.
  • the present invention provides an uplink scheduling method and apparatus based on an unlicensed carrier, which can avoid the problem that the terminal device cannot transmit data because the unlicensed carrier selected by the base station is busy, and reduces the data transmission delay.
  • the first aspect of the present application provides an uplink scheduling method based on an unlicensed carrier, including:
  • the first base station sends configuration information to the terminal device, where the configuration information is used to indicate that the terminal device performs LBT detection after performing first interception on at least one unlicensed carrier;
  • the first base station sends the configuration information to the terminal device by using high layer signaling.
  • the configuration information includes: detection time information of the unlicensed carrier, frequency information of the unlicensed carrier, and The reporting conditions for the LBT test results are described.
  • the configuration information further includes: the number of detections of the unlicensed carrier within the detection time and/or the bandwidth of the unlicensed carrier.
  • the idle information of the unlicensed carrier includes an LBT success rate
  • the LBT success rate is a ratio of the number of idle times detected by the unlicensed carrier at the detection time to the number of detections.
  • the unlicensed carrier included in the LBT detection result is all unlicensed carriers in the at least one unlicensed carrier; or ,
  • the unlicensed carrier included in the LBT detection result is an unlicensed carrier with the highest LBT success rate among the at least one authorized carrier;
  • the unlicensed carrier included in the LBT detection result is N unlicensed carriers with a higher LBT success rate in the at least one authorized carrier, and N is greater than or equal to 2; or
  • the unlicensed carrier included in the LBT detection result is an unlicensed carrier in which the LBT success rate is higher than the first threshold in the at least one authorized carrier.
  • the first base station sends configuration information to the terminal device, specifically:
  • the first base station sends the first configuration information to the terminal device by using the downlink high-layer signaling, where the first configuration information includes a frequency point and an index of each unlicensed spectrum in the unlicensed carrier set, and the unlicensed carrier set An unlicensed carrier including a first base station and/or a second base station;
  • the second configuration information Transmitting, by the first base station, the second configuration information to the terminal device by using the downlink physical layer signaling or the downlink medium access control MAC layer signaling, where the second configuration information includes an index of the at least one unlicensed carrier, where Said at least one unlicensed carrier belongs to said set of unlicensed carriers.
  • the first base station sends configuration information to the terminal device, specifically:
  • the first base station sends the configuration information to the terminal device by using downlink physical layer signaling or downlink MAC layer signaling, where the configuration information includes a frequency point of the at least one unlicensed carrier.
  • the idle information of the unlicensed carrier indicates busy or idle by at least one bit.
  • the at least one unlicensed carrier includes the first An unlicensed carrier of the base station and/or an unlicensed carrier of the second base station;
  • the idle information of the unlicensed carrier includes an LBT success rate
  • the LBT success rate is a ratio of the number of idle times detected by the unlicensed carrier at the detection time to the number of detections.
  • the unlicensed carrier included in the LBT detection result is an unlicensed carrier with the highest LBT success rate among the at least one authorized carrier;
  • the unlicensed carrier included in the LBT detection result is N unlicensed carriers with a higher LBT success rate in the at least one authorized carrier, and N is greater than or equal to 2; or
  • the unlicensed carrier included in the LBT detection result is an unlicensed carrier in which the LBT success rate is higher than the first threshold in the at least one authorized carrier.
  • the terminal device receives the configuration information sent by the first base station, specifically:
  • the terminal device receives the configuration information that is sent by the first base station by using downlink physical layer signaling or downlink MAC layer signaling, where the configuration information includes a frequency point of the at least one unlicensed carrier.
  • the LBT detection result is carried in uplink physical layer signaling or uplink MAC layer signaling, where the downlink is Physical layer signaling and the uplink physical layer signaling are sent on the licensed carrier.
  • the at least one unlicensed carrier includes the first An unlicensed carrier of the base station and/or an unlicensed carrier of the second base station;
  • the first base station and the second base station are base stations for performing DC communication on the terminal device.
  • the terminal device receives the configuration information sent by the second base station, and the configuration information sent by the second base station is used to instruct the terminal device to perform LBT detection on the unlicensed carrier of the second base station;
  • the terminal device sends an LBT detection result to the second base station, and the LBT detection result sent to the second base station includes idle information of the unlicensed carrier of the second base station.
  • the first base station is the terminal device
  • the base station where the primary cell and the secondary cell are located, the at least one unlicensed carrier includes an unlicensed carrier of the secondary cell.
  • a receiving module configured to receive an LBT detection result sent by the terminal device, where the LBT detection result includes idle information of all or part of the unlicensed carriers in the at least one unlicensed carrier;
  • a processing module configured to determine, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result.
  • the sending module is configured to: send the configuration information to the terminal device by using high layer signaling.
  • the configuration information includes: detection time information of the unlicensed carrier, frequency information of the unlicensed carrier, and The reporting conditions for the LBT test results are described.
  • the configuration information further includes: a detection frequency of the unlicensed carrier in the detection time and/or the unlicensed carrier Bandwidth.
  • the idle information of the unlicensed carrier includes an LBT success rate
  • the LBT success rate is a ratio of the number of idle times detected by the unlicensed carrier at the detection time to the number of detections.
  • the unlicensed carrier included in the LBT detection result is all unlicensed carriers in the at least one unlicensed carrier; or ,
  • the unlicensed carrier included in the LBT detection result is an unlicensed carrier with the highest LBT success rate among the at least one authorized carrier;
  • the unlicensed carrier included in the LBT detection result is N unlicensed carriers with a higher LBT success rate in the at least one authorized carrier, and N is greater than or equal to 2; or
  • the unlicensed carrier included in the LBT detection result is an unlicensed carrier in which the LBT success rate is higher than the first threshold in the at least one authorized carrier.
  • the sending module is specifically configured to:
  • the terminal device Transmitting the first configuration information to the terminal device by using the downlink high-layer signaling, where the first configuration information includes a frequency point and an index of each unlicensed spectrum in the unlicensed carrier set, where the unlicensed carrier set includes the first base station and / or an unlicensed carrier of the second base station;
  • Second configuration information to the terminal device by using downlink physical layer signaling or downlink MAC layer signaling, where the second configuration information includes an index of the at least one unlicensed carrier, where the at least one unlicensed carrier belongs to the Unauthorized carrier set.
  • the sending module is specifically configured to:
  • the idle information of the unlicensed carrier indicates busy or idle by at least one bit.
  • the LBT detection result is carried in uplink physical layer signaling or uplink MAC layer signaling, where the downlink is Physical layer signaling and the uplink physical layer signaling are sent on the licensed carrier.
  • the at least one unlicensed carrier includes the first An unlicensed carrier of the base station and/or an unlicensed carrier of the second base station;
  • the unlicensed carrier included in the LBT detection result includes an unlicensed carrier of the first base station and/or the second base station;
  • the first base station and the second base station are base stations for performing DC communication on the terminal device.
  • the first base station is the terminal device The base station where the primary cell and the secondary cell are located, the at least one unlicensed carrier includes an unlicensed carrier of the secondary cell.
  • a receiving module configured to receive configuration information sent by the first base station, where the configuration information is used to indicate that the terminal device performs LBT detection after first listening to at least one unlicensed carrier;
  • a processing module configured to perform LBT detection on the unlicensed carrier according to the configuration information
  • a sending module configured to send the LBT detection result to the first base station, where the LBT detection result includes idle information of all or part of the unlicensed carriers in the at least one unlicensed carrier.
  • the configuration information is sent by the first base station to the terminal device by using high layer signaling.
  • the configuration information includes: detection time information of the unlicensed carrier, frequency information of the unlicensed carrier, and reporting condition of the LBT detection result.
  • the unlicensed carrier included in the LBT detection result is all unlicensed carriers in the at least one unlicensed carrier; or ,
  • the unlicensed carrier included in the LBT detection result is an unlicensed carrier with the highest LBT success rate among the at least one authorized carrier;
  • the unlicensed carrier included in the LBT detection result is N unlicensed carriers with a higher LBT success rate in the at least one authorized carrier, and N is greater than or equal to 2; or
  • the unlicensed carrier included in the LBT detection result is an unlicensed carrier in which the LBT success rate is higher than the first threshold in the at least one authorized carrier.
  • the receiving module is specifically configured to:
  • first base station And receiving, by the first base station, first configuration information that is sent by using the downlink high-layer signaling, where the first configuration information includes a frequency point and an index of each unlicensed spectrum in the unlicensed carrier set, where the unlicensed carrier set includes the first An unlicensed carrier of the base station and/or the second base station;
  • the first base station Receiving, by the first base station, second configuration information that is sent by using a downlink physical layer signaling or a downlink medium access control MAC layer signaling, where the second configuration information includes an index of the at least one unlicensed carrier, the at least one The unlicensed carrier belongs to the set of unlicensed carriers.
  • the receiving module is specifically configured to:
  • the idle information of the unlicensed carrier indicates busy or idle by using at least one bit.
  • the at least one unlicensed carrier includes the first An unlicensed carrier of the base station and/or an unlicensed carrier of the second base station;
  • the unlicensed carrier included in the LBT detection result includes an unlicensed carrier of the first base station and/or the second base station;
  • the receiving module is further configured to receive configuration information sent by the second base station, where the configuration information sent by the second base station is used to instruct the terminal device to perform LBT detection on an unlicensed carrier of the second base station;
  • the processing module is further configured to perform LBT detection according to the configuration information sent by the second base station;
  • a sixth aspect of the present application provides a terminal device, including: a processor, a memory, a receiver, and a transmitter, where the memory, the receiver, and the transmitter are connected and communicated with the processor through a bus, the memory For storing computer execution instructions, the processor is configured to execute the computer execution instructions to cause the terminal device to perform the methods of the second aspect, and the first to twelfth implementations of the second aspect.
  • Figure 1 is a schematic diagram of a DC scene
  • Embodiment 2 is a signaling flowchart of an unlicensed carrier-based uplink scheduling method according to Embodiment 1;
  • Embodiment 6 is a signaling flowchart of an unlicensed carrier-based uplink scheduling method provided in Embodiment 5;
  • FIG. 9 is a schematic structural diagram of a first base station according to Embodiment 8.
  • FIG. 12 is a schematic structural diagram of a terminal device according to Embodiment 11.
  • the LAA scenario is also called a CA scenario.
  • the terminal device communicates with only one base station.
  • the base station aggregates the licensed spectrum and the unlicensed spectrum.
  • the licensed spectrum is used as the primary component carrier (PCC).
  • a component carrier (SCC) is a carrier used by a primary cell of a terminal device, and an SCC is a carrier used by a secondary cell of a terminal device.
  • the base station may be an Evolved NodeB (eNB) in a Long Term Evolution (LTE) system, or may be a base station in a fifth generation mobile communication system (5-Generation, 5G), and a base station in 5G. Also known as gNB.
  • the DC refers to the terminal device accessing two base stations simultaneously through the authorized carrier and the unlicensed carrier for communication.
  • the terminal device communicates with two base stations, one base station may be referred to as a primary base station, and one base station may be referred to as a secondary base station.
  • the two base stations may all be base stations in the LTE system, or both may be base stations in the 5G system, or one base station is a base station in the LTE system, and one is a base station in the 5G system.
  • the unlicensed carrier can operate on the secondary cell of any one of the two base stations.
  • the authorized carrier can operate on the primary cell of any one of the two base stations.
  • the LAA In the LTE system, four deployment scenarios are defined for the LAA, including macro cell coverage and no macro cell coverage, co-location and non-co-location (with ideal and non-ideal backhaul) scenarios.
  • the licensed spectrum is deployed in a macro cell
  • the unlicensed spectrum is deployed in a small cell or a micro cell.
  • the deployed frequency band may be 5.8G, 5.4G, or 5.1 GHz.
  • Scenario 1 DC is performed between the authorized carrier F1 of the macro cell and the unlicensed carrier F3 of the small cell.
  • Scenario 2 DC is performed between the authorized carrier F2 of the small cell and the unlicensed carrier F3 of the small cell.
  • the authorized carrier F1 of the macro cell the authorized carrier F2 of the small cell, and the unlicensed carrier F3 of the small cell Line DC.
  • FIG. 2 is a signaling flowchart of an unlicensed carrier-based uplink scheduling method according to the first embodiment. As shown in FIG. 2, the method provided in this embodiment includes the following steps:
  • Step S101 The first base station sends configuration information to the terminal device.
  • the terminal device communicates with only one base station (ie, the first base station), and the first base station is the primary cell where the terminal device and the base station where the secondary cell is located.
  • the terminal device communicates with two base stations (the first base station and the second base station), and the first base station may be the primary base station of the terminal device or the secondary base station of the terminal device.
  • the configuration information is used to indicate that the terminal device performs LBT detection on the at least one unlicensed carrier.
  • the at least one unlicensed carrier includes an unlicensed carrier used by the secondary cell of the terminal device, and the at least one unlicensed carrier may only include Some unlicensed carriers used by the secondary cell may also include all unlicensed carriers used by the secondary cell.
  • the at least one unlicensed carrier may only include the unlicensed carrier of the first base station, It is also possible to include only the unlicensed carrier of the second base station, and may also include the unlicensed carrier of the first base station and the unlicensed carrier of the second base station.
  • the unlicensed carrier of the first base station When the unlicensed carrier of the first base station is included in the at least one unlicensed carrier, only part of the unlicensed carrier of the first base station may be included, and all unlicensed carriers of the first base station may be included.
  • the unlicensed carrier of the second base station is included in the at least one unlicensed carrier, only some unlicensed carriers of the second base station may be included, and all unlicensed carriers of the second base station may be included.
  • the at least one unlicensed carrier includes the unlicensed carrier of the second base station
  • communication between the two base stations is required before configuration, so that the first base station can enable the first base station to Obtaining configuration information of the unlicensed carrier of the second base station.
  • the second base station actively sends the configuration information of the unlicensed carrier to be detected by the LBT to the first base station, and then the configuration information of the unlicensed carrier to be detected by the first base station and the configuration information of the unlicensed carrier of the second base station are configured by the first base station. Send to the terminal device together.
  • the method in this embodiment may be applied to semi-static uplink carrier selection, and may also be applied to dynamic uplink carrier selection.
  • the first base station instructs the terminal device to perform LBT detection on the unlicensed carrier within a period of time, and the idle information of the unlicensed carrier detected by the terminal device is not real-time, but the unlicensed carrier is in a period of time. Idle information.
  • the first base station instructs the terminal device to perform LBT detection on the unlicensed carrier in real time, and the idle information of the obtained unlicensed carrier detected by the terminal device is real-time.
  • Step S102 The terminal device performs LBT detection on the unlicensed carrier according to the configuration information.
  • the terminal device receives the configuration information sent by the first base station, performs LBT detection according to the configuration information, and obtains an LBT detection result.
  • the LBT detection refers to detecting whether there is energy on the unlicensed carrier. If there is energy on the unlicensed carrier, the unlicensed carrier is busy. If there is no energy on the unlicensed carrier, the unlicensed carrier is idle.
  • the terminal device if the first base station and the second base station are configured separately, that is, the configuration information sent by the first base station includes only the configuration information of the unlicensed carrier of the first base station, the terminal device also receives the second base station sends the configuration information.
  • the configuration information includes configuration information of the unlicensed carrier of the second base station in the configuration information sent by the second base station, and the terminal device performs LBT detection according to the configuration information of the unlicensed carrier of the second base station.
  • Step S103 The terminal device sends the LBT detection result to the first base station.
  • the LBT detection result includes idle information of all or part of the unlicensed carriers in the at least one unlicensed carrier, and the idle information is used to indicate whether the corresponding unlicensed carrier is idle or not, and is not idle or busy.
  • the unlicensed carrier included in the LBT detection result is all unlicensed carriers in the at least one unlicensed carrier, or an unlicensed carrier with the highest LBT success rate among the at least one authorized carrier, or an LBT in the at least one authorized carrier.
  • the N unlicensed carriers with a high success rate, N is greater than or equal to 2, or an unlicensed carrier whose LBT success rate is higher than the first threshold in the at least one authorized carrier.
  • the LBT detection result sent by the terminal device to the first base station may include only the first base station.
  • the idle information of the unlicensed carrier may also include idle information of the unlicensed carrier of the first base station and idle information of the unlicensed carrier of the second base station.
  • the terminal device also needs to send the second base station to the second base station. The idle information of the weight carrier.
  • the first base station may also indicate the reporting condition of the terminal device LBT detection result, and the terminal device performs the LBT detection result report according to the reporting condition of the LBT detection result.
  • the terminal device reports the LBT detection result in real time.
  • Step S104 The first base station determines, according to the LBT detection result, an unlicensed carrier for uplink transmission for the terminal device.
  • the first base station receives the LBT detection result obtained by the terminal device according to the configuration information, and selects an idle unlicensed carrier for the uplink transmission according to the LBT detection result, thereby preventing the terminal device from being unable to be busy due to the unlicensed carrier selected by the base station.
  • the problem of sending data, the terminal device does not need to wait, reducing the data transmission delay.
  • the terminal device may report the LBT detection result only to the first base station, where the LBT detection result includes not only the idle information of the unlicensed carrier of the first base station, but also the idle information of the unlicensed carrier of the second base station.
  • the first base station determines, according to the idle information of the unlicensed carrier of the first base station, the unlicensed carrier used for transmitting the uplink data to the first base station, and according to the idle information of the unlicensed carrier of the second base station, The terminal device determines an unlicensed carrier used for transmitting uplink data to the second base station.
  • the first base station sends the idle information of the unlicensed carrier of the second base station to the second base station, where the first base station can idle the unlicensed carrier of the second base station by using an X2 interface with the second base station.
  • the information is sent to the second base station, and the second base station determines, for the terminal device, the unlicensed carrier used for transmitting the uplink data to the second base station according to the idle information of the unlicensed carrier of the second base station.
  • the first base station and/or the second base station After determining the unlicensed carrier for the uplink transmission, the first base station and/or the second base station send the uplink scheduling information to the terminal device, that is, the two terminal devices can respectively schedule the terminal device, and the uplink scheduling information is used to indicate the terminal. Time-frequency resources used by the device for uplink scheduling.
  • the first base station sends configuration information to the terminal device, where the configuration information is used to indicate that the terminal device performs LBT detection on the at least one unlicensed carrier, and the terminal device performs LBT detection on the unlicensed carrier according to the configuration information, and the LBT is detected.
  • the detection result is sent to the first base station, and the first base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result, where the LBT detection result includes all or part of the unlicensed carrier of the at least one unlicensed carrier. Free information. Since the unlicensed carrier determined according to the LBT detection result is idle, the problem that the terminal device cannot transmit data due to the unlicensed carrier selected by the base station is avoided, and the terminal device does not need to wait, which reduces the data transmission delay.
  • FIG. 3 is a signaling flowchart of an unlicensed carrier-based uplink scheduling method according to the second embodiment.
  • the first base station performs semi-static uplink carrier selection, and the terminal device and the first
  • the method provided by the embodiment includes the following steps:
  • Step 201 The second base station sends information about the unlicensed carrier of the second base station to the first base station.
  • the number of unlicensed carriers of the second base station may be one or more, and the information of the unlicensed carrier of the second base station may include a frequency index or a frequency point of the unlicensed carrier of the second base station, optionally, The bandwidth of the unlicensed carrier of the second base station may be included.
  • the second base station can transmit data to the first base station through the X2 interface.
  • Step S202 The first base station sends configuration information to the terminal device by using the downlink high-layer signaling, where the configuration information is used to instruct the terminal device to perform LBT detection on the at least one unlicensed carrier.
  • the first base station After receiving the unlicensed carrier information of the second base station, the first base station generates configuration information of the unlicensed carrier of the second base station.
  • the second base station may also send the configuration information of the unlicensed carrier of the second base station to the first A base station.
  • the first base station After acquiring the configuration information of the unlicensed carrier of the second base station, the first base station sends the configuration information of the unlicensed carrier and the configuration information of the unlicensed carrier of the second base station together as the configuration information to the terminal device.
  • the configuration information is used to indicate that the terminal device performs LBT detection on at least one unlicensed carrier, and the downlink higher layer signaling may be a Radio Resource Control (RRC) message or an RRC detection report. Because the time interval between the downlink high-level signaling is long, the configuration information can only indicate that the terminal device performs LBT detection on the unlicensed carrier within a period of time.
  • the configuration information includes: detection time information of the unlicensed carrier, frequency information of the unlicensed carrier, and reporting condition of the LBT detection result.
  • the at least one unlicensed carrier includes an unlicensed carrier of the first base station and an unlicensed carrier of the second base station
  • the detection time of the unlicensed carrier of the first base station and the unlicensed carrier of the second base station may be the same or different.
  • the detection time information of the unlicensed carrier of the first base station and the unlicensed carrier of the second base station may be a common time interval or a common time. Timer.
  • the configuration information needs to include detection time information of the unlicensed carrier of the first base station and the unlicensed carrier of the second base station, respectively.
  • the detection time information of the unlicensed carrier of the first base station may be a time interval or a timer, and the detection time information of the unlicensed carrier of the second base station may also be a time interval or a timer.
  • the frequency information of the unlicensed carrier is used to indicate which frequency point the terminal device performs LBT detection.
  • the frequency information of the unlicensed carrier may be the value of the frequency point or the index of the frequency point.
  • the reporting condition of the LBT detection result may be a periodic report or an event triggering report, and the periodic report is, for example, reporting the LBT detection result every 5 seconds or 10 seconds, and the event triggering reporting means that the pre-set event is satisfied before reporting.
  • the event is, for example, that the LBT success rate of the unlicensed carrier is higher than the first threshold, and the LBT success rate refers to the ratio of the number of idle times that the unlicensed carrier is detected at the detection time to the number of detections. For example, the number of detections of the unlicensed carrier 1 in the detection time is 5, and the number of idle times of the unlicensed carrier 1 is 3, and the LBT success rate of the unlicensed carrier 1 is 3/5.
  • the configuration information further includes: the number of detections in the detection time of the unlicensed carrier and/or the bandwidth of the unlicensed carrier. If the number of times of detection in the detection time of the unlicensed carrier is included in the configuration information, the terminal device performs LBT detection on the unlicensed carrier in the detection time of the unlicensed carrier according to the number of detections, if the detection information does not include the detection number. Then, the terminal device determines the number of detections autonomously.
  • the configuration information further includes indication information about the base station reporting the LBT detection result to the base station.
  • the configuration information may be used to indicate that the terminal device reports the LBT detection result to the first base station or the second base station, and may also instruct the terminal device to report the idle information of the unlicensed carrier of the first base station to the first base station, and the second base station is not. The idle information of the authorized carrier is reported to the second base station.
  • Step S203 The terminal device performs LBT detection on the unlicensed carrier according to the configuration information.
  • the terminal device performs one or more LBT detections during the detection time of the configured unlicensed carrier, and counts the LBT success rate of the unlicensed carrier to generate an LBT detection result.
  • Step S204 The terminal device sends the LBT detection result to the first base station according to the reporting condition of the LBT detection result.
  • the terminal device detects whether the LBT detection result satisfies the reporting condition of the LBT detection result, for example. For example, the terminal device detects whether the configured unlicensed carrier has a LBT success rate greater than the first unlicensed carrier of the first threshold. If the LBT success rate of the unlicensed carrier is greater than the first threshold, it is determined to report the LBT detection result.
  • the idle information of the unlicensed carrier included in the LBT detection result is the LBT success rate, and the LBT success rate is the ratio of the number of idle times detected by the unlicensed carrier at the detection time to the number of detections.
  • the terminal device reports the LBT result to the configured corresponding base station according to the indication information.
  • the terminal device reports the LBT success rate of the unlicensed carrier of the first base station and the LBT success rate of the unlicensed carrier of the second base station to the first base station according to the indication information.
  • Step S205 The first base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to an LBT success rate of the unlicensed carrier of the first base station included in the LBT detection result.
  • step S206 is performed. After determining, by the terminal device, the unlicensed carrier used for transmitting data to the first base station, the first base station sends uplink scheduling information to the terminal device, and instructs the terminal device to perform uplink transmission on the determined unlicensed carrier.
  • Step S206 The first base station sends the LBT success rate of the unlicensed carrier of the second base station included in the LBT detection result to the second base station.
  • Step S207 The second base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to an LBT success rate of the unlicensed carrier of the second base station.
  • Step S206 is an optional step, and the first base station may not send the LBT success rate of the unlicensed carrier of the second base station to the second base station, but the first base station according to the LBT success rate of the unlicensed carrier of the second base station, Determining an unlicensed carrier used by the terminal device to send uplink data to the second base station.
  • the first base station sends uplink scheduling information to the terminal device.
  • the terminal device may also send the LBT success rate of the unlicensed carrier of the first base station to the first base station, and send the LBT success rate of the unlicensed carrier of the second base station to the second base station, where The first base station and the second base station respectively determine, for the terminal device, an unlicensed carrier for uplink transmission.
  • the second base station sends the information of the unlicensed carrier of the second base station to the first base station, and the first base station uniformly performs the LBT detection configuration on the unlicensed carrier of the first base station and the unlicensed carrier of the second base station.
  • the terminal device performs LBT detection on the unlicensed carrier according to the configuration information, and sends the LBT detection result to the first base station, where the first base station determines, according to the LBT success rate of the unlicensed carrier of the first base station included in the LBT detection result, the terminal device determines The unlicensed carrier used for uplink transmission transmits the LBT success rate of the unlicensed carrier of the second base station included in the LBT detection result to the second base station. Since the unlicensed carrier determined according to the LBT detection result is idle, the problem that the terminal device cannot transmit data due to the unlicensed carrier selected by the base station is avoided, and the terminal device does not need to wait, which reduces the data transmission delay.
  • the method provided in this embodiment includes the following steps:
  • Step S301 The first base station sends the unlicensed carrier of the first base station to the terminal device by using the downlink high layer signaling. Configuration information.
  • the configuration information is used to instruct the terminal device to perform LBT detection on the unlicensed carrier of the first base station.
  • Step S302 The second base station sends configuration information of the unlicensed carrier of the second base station to the terminal device by using the downlink high layer signaling.
  • the configuration information is used to instruct the terminal device to perform LBT detection on the unlicensed carrier of the second base station.
  • Step S301 and step S302 are not sequential in execution.
  • the downlink high-level signaling may be an RRC message
  • the configuration information sent by the first base station includes: detection time information of the unlicensed carrier of the first base station, frequency information of the unlicensed carrier of the first base station, and reporting of the LBT detection result. condition.
  • the configuration information sent by the second base station includes: detection time information of the unlicensed carrier of the second base station, frequency information of the unlicensed carrier of the second base station, and reporting condition of the LBT detection result.
  • the detection time information of the unlicensed carrier of the first base station and the detection time information of the unlicensed carrier of the second base station may be the same or different, and the reporting condition of the LBT detection result of the unlicensed carrier of the first base station is different from that of the second base station.
  • the reporting conditions of the LBT detection result of the unlicensed carrier may be the same or different.
  • the reporting condition of the LBT detection result may be reported by a periodic report or an event trigger.
  • the configuration information sent by the first base station further includes: the number of detections in the detection time of the unlicensed carrier of the first base station and/or the bandwidth of the unlicensed carrier of the first base station. If the number of detections is not included in the configuration information sent by the first base station, the terminal device determines the number of detections autonomously.
  • the configuration information sent by the second base station further includes: the number of detections in the detection time of the unlicensed carrier of the second base station and/or the bandwidth of the unlicensed carrier of the second base station. If the number of detections is not included in the configuration information sent by the second base station, the terminal device determines the number of detections autonomously.
  • Step S303 The terminal device performs LBT detection on the unlicensed carrier of the first base station according to the configuration information sent by the first base station.
  • Step S304 The terminal device performs LBT detection on the unlicensed carrier of the second base station according to the configuration information sent by the second base station.
  • Step S305 The terminal device sends the LBT detection result of the unlicensed carrier of the first base station to the first base station.
  • Step S306 The terminal device sends the LBT detection result of the unlicensed carrier of the second base station to the second base station.
  • Step S307 The first base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result of the unlicensed carrier of the first base station.
  • the first base station After determining the unlicensed carrier for the uplink transmission for the terminal device, the first base station sends uplink scheduling information to the terminal device, instructing the terminal device to send data to the first base station on the determined unlicensed carrier.
  • Step S308 The second base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result of the unlicensed carrier of the second base station.
  • the second base station After determining the unlicensed carrier for the uplink transmission for the terminal device, the second base station sends uplink scheduling information to the terminal device, instructing the terminal device to send data to the second base station on the determined unlicensed carrier.
  • FIG. 5 is a signaling flowchart of the unlicensed carrier-based uplink scheduling method provided in the fourth embodiment.
  • the difference between this embodiment and the second embodiment and the third embodiment is as follows:
  • the device performs CA communication with the first base station.
  • the method provided in this embodiment includes the following steps:
  • Step S401 The first base station sends configuration information of the unlicensed carrier of the secondary cell to the terminal device by using the downlink high layer signaling.
  • the configuration information is used to indicate that the terminal device performs LBT detection on the unlicensed carrier of the secondary cell, and the high-layer signaling may be an RRC message, and the configuration information includes: detection time information of the unlicensed carrier of the secondary cell, and non-permission of the secondary cell.
  • the reporting condition of the LBT detection result may be reported by a periodic report or an event trigger.
  • the configuration information further includes: the number of detections in the detection time of the authorized carrier of the secondary cell and/or the bandwidth of the unlicensed carrier of the secondary cell. If the number of detections is not included in the configuration information, the terminal device determines the number of detections autonomously.
  • Step S402 The terminal device performs LBT detection on the unlicensed carrier of the secondary cell according to the configuration information.
  • Step S403 The terminal device sends the LBT detection result of the unlicensed carrier of the secondary cell to the first base station.
  • the LBT detection result of the unlicensed carrier of the secondary cell includes the LBT success rate, and the LBT success rate is the ratio of the number of idle times and the number of detections of the unlicensed carrier of the secondary cell detected at the detection time.
  • Step S404 The first base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result.
  • the first base station After determining, by the terminal device, the unlicensed carrier for uplink transmission, the first base station sends uplink scheduling information to the terminal device, instructing the terminal device to use the determined unlicensed carrier for uplink transmission.
  • FIG. 6 is a signaling flowchart of an unlicensed carrier-based uplink scheduling method according to the fifth embodiment.
  • the first base station performs dynamic uplink carrier selection, and the terminal device and the first base station.
  • the method provided in this embodiment includes the following steps:
  • Step S501 The second base station sends information about the unlicensed carrier of the second base station to the first base station.
  • the number of the unlicensed carriers of the second base station may be one or more, and the information of the unlicensed carrier of the second base station may include the frequency and index of the unlicensed carrier of the second base station, and optionally, may also include the second The bandwidth of the unlicensed carrier of the base station.
  • Step S502 The first base station sends the first configuration information to the terminal device by using the downlink high layer signaling.
  • the first configuration information includes frequency points and indexes of each unlicensed spectrum in the unlicensed carrier set.
  • the unlicensed carrier set includes an unlicensed carrier of the first base station and an unlicensed carrier of the second base station.
  • Step S503 The first base station sends the second configuration information to the terminal device by using downlink physical layer signaling or downlink MAC layer signaling.
  • the second configuration information includes an index of at least one unlicensed carrier that belongs to the set of unlicensed carriers.
  • the second configuration information is used to instruct the terminal device to perform LBT detection on all or part of the unlicensed carriers in the unlicensed carrier set. Therefore, the at least one unlicensed carrier may include an unlicensed carrier of the first base station and/or an unlicensed carrier of the second base station.
  • the downlink physical layer signaling or the downlink MAC layer signaling is sent by using an unlicensed carrier.
  • the downlink physical layer signaling may be a Physical Downlink Control Channel (PDCCH).
  • PDCH Physical Downlink Control Channel
  • the unlicensed carrier set includes a total of eight unlicensed carriers, the unlicensed carriers 1 to 4 belong to the unlicensed carrier of the first base station, and the unlicensed carriers 5 to 8 belong to the unlicensed carrier of the second base station, and the first base station
  • the downlink device layer signaling or the downlink MAC layer signaling may indicate that the terminal device performs LBT detection on the unlicensed carrier 3 and the unlicensed carrier 6.
  • Step S504 the terminal device indicates, according to the first configuration information and the second configuration information, the second configuration information. At least one unlicensed carrier performs LBT detection.
  • the terminal device determines, according to the index of the first unlicensed carrier included in the second configuration information, which LBT detection is performed on the unlicensed carriers, and then performs LBT detection.
  • Step S505 The terminal device sends the LBT detection result of the unlicensed carrier of the first base station to the first base station.
  • the LBT detection result of the unlicensed carrier of the first base station may be carried in the uplink physical layer signaling or the uplink MAC layer signaling.
  • the uplink physical layer signaling or the uplink MAC layer signaling is sent on the authorized carrier.
  • the idle information of the unlicensed carrier included in the LBT detection result of the unlicensed carrier of the first base station may indicate busy or idle by at least one bit.
  • Step S506 The first base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result of the unlicensed carrier of the first base station.
  • the first base station determines, for the terminal device, the unlicensed carrier for the uplink transmission, and sends the uplink scheduling information to the terminal device, instructing the terminal device to use the determined unlicensed carrier for the uplink transmission, and the unlicensed carrier determined by the first base station is the idle carrier, to avoid
  • the terminal device is unable to transmit data because the unlicensed carrier selected by the base station is busy, and the terminal device does not need to wait, which reduces the data transmission delay.
  • Step S507 The terminal device sends the LBT detection result of the unlicensed carrier of the second base station to the second base station.
  • the LBT detection result of the unlicensed carrier of the second base station may be carried in the uplink physical layer signaling or the uplink MAC layer signaling.
  • the uplink physical layer signaling or the uplink MAC layer signaling is sent on the authorized carrier, and the idle information of the unlicensed carrier included in the LBT detection result of the unlicensed carrier of the second base station may be indicated by at least one bit busy. Or idle.
  • Step S508 The second base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result of the unlicensed carrier of the second base station.
  • the second base station determines, for the terminal device, the unlicensed carrier for the uplink transmission, and sends the uplink scheduling information to the terminal device, indicating that the terminal device uses the determined unlicensed carrier for the uplink transmission, and the unlicensed carrier determined by the second base station is the idle carrier, to avoid
  • the terminal device is unable to transmit data because the unlicensed carrier selected by the base station is busy, and the terminal device does not need to wait, which reduces the data transmission delay.
  • the terminal device may also send the LBT detection result of the unlicensed carrier of the first base station and the LBT detection result of the unlicensed carrier of the second base station to the first base station.
  • the first base station sends the LBT detection result of the unlicensed carrier of the second base station to the second base station.
  • FIG. 7 is a signaling flowchart of the unlicensed carrier-based uplink scheduling method provided in the sixth embodiment.
  • the difference between this embodiment and the fifth embodiment is that the first base station in the fifth embodiment is unified.
  • the unlicensed carrier of the first base station and the unlicensed carrier of the second base station perform LBT detection configuration.
  • the first base station and the second base station respectively configure their own unlicensed carriers for LBT detection.
  • the method provided in this embodiment includes the following steps:
  • Step S601 The first base station sends, by using the downlink high-layer signaling, the first configuration information of the unlicensed carrier of the first base station to the terminal device.
  • the first configuration information sent by the first base station includes a frequency point and an index of each unlicensed spectrum in the unlicensed carrier set of the first base station.
  • Step S602 The second base station sends the unlicensed carrier of the second base station to the terminal device by using the downlink high layer signaling. Third configuration information.
  • the third configuration information sent by the second base station includes frequency points and indexes of each unlicensed spectrum in the unlicensed carrier set of the second base station.
  • Step S603 The first base station sends, by using downlink physical layer signaling or downlink MAC layer signaling, second configuration information of the unlicensed carrier of the first base station to the terminal device.
  • the second configuration information sent by the first base station is used to instruct the terminal device to perform LBT detection on all or part of the unlicensed carriers in the unlicensed carrier set of the first base station.
  • the second configuration information sent by the first base station includes an index of at least one unlicensed carrier that needs to be detected, and the unlicensed carrier belongs to an unlicensed carrier set of the first base station.
  • Step S604 The second base station sends, by using downlink physical layer signaling or downlink MAC layer signaling, fourth configuration information of the unlicensed carrier of the second base station to the terminal device.
  • the fourth configuration information sent by the second base station is used to instruct the terminal device to perform LBT detection on all or part of the unlicensed carriers in the unlicensed carrier set of the second base station.
  • the fourth configuration information sent by the second base station includes an index of at least one unlicensed carrier that needs to be detected, and the unlicensed carrier belongs to an unlicensed carrier set of the second base station.
  • Step S605 The terminal device performs LBT detection on the unlicensed carrier of the first base station according to the first configuration information and the second configuration information.
  • the LBT detection result of the unlicensed carrier of the first base station may be carried in the uplink physical layer signaling or the uplink MAC layer signaling.
  • the uplink physical layer signaling or the uplink MAC layer signaling is sent on the authorized carrier.
  • the idle information of the unlicensed carrier included in the LBT detection result of the unlicensed carrier of the first base station may indicate busy or idle by at least one bit.
  • Step S607 The terminal device performs LBT detection on the unlicensed carrier of the second base station according to the third configuration information and the fourth configuration information.
  • FIG. 8 is a signaling flowchart of the unlicensed carrier-based uplink scheduling method provided in the seventh embodiment.
  • the difference between the embodiment and the embodiment 5 and the embodiment is: the terminal device in this embodiment.
  • the CA is in communication with the first base station.
  • the method provided in this embodiment includes the following steps:
  • the first configuration information includes a frequency point and an index of each unlicensed spectrum in the unlicensed carrier set, where the unlicensed carrier set includes an unlicensed carrier of the secondary cell of the terminal device.
  • Each unlicensed spectrum in the set of unlicensed carriers is Unlicensed spectrum of the secondary cell.
  • Step S702 The first base station sends second configuration information of the unlicensed carrier of the secondary cell to the terminal device by using downlink physical layer signaling or downlink MAC layer signaling.
  • the second configuration information is used to indicate that the terminal device performs measurement on all or part of the unlicensed carriers in the unlicensed carrier set. Therefore, the second configuration information includes an index of the unlicensed carrier of the secondary cell that needs to perform LBT detection.
  • Step S703 The terminal device performs LBT detection on the unlicensed carrier of the secondary cell according to the first configuration information and the second configuration information.
  • Step S704 The terminal device sends the LBT detection result of the unlicensed carrier of the secondary cell to the first base station.
  • Step S705 The first base station determines, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result.
  • the first base station and/or the second base station first send the frequency points and indexes of the unlicensed carriers in the set of unlicensed carriers to be measured to the terminal device by using the downlink high-layer signaling, and subsequently pass the downlink.
  • Physical layer signaling or MAC layer signaling dynamically indicates an index of one or several unlicensed carriers that need to be measured.
  • the first base station and/or the second base station terminal device may also dynamically send, by using downlink physical layer signaling, a frequency point that needs to measure an unlicensed carrier, where the downlink physical layer signaling is, for example, a PDCCH, optionally.
  • the downlink physical layer signaling further includes a bandwidth of the unlicensed carrier.
  • FIG. 9 is a schematic structural diagram of a first base station according to Embodiment 8. As shown in FIG. 9, the first base station in this embodiment includes:
  • the sending module 11 is configured to send configuration information to the terminal device, where the configuration information is used to indicate that the terminal device performs LBT detection after performing first interception on at least one unlicensed carrier;
  • the receiving module 12 is configured to receive an LBT detection result sent by the terminal device, where the LBT detection result includes idle information of all or part of the unlicensed carriers in the at least one unlicensed carrier;
  • the processing module 13 is configured to determine, for the terminal device, an unlicensed carrier for uplink transmission according to the LBT detection result.
  • the sending module 11 is specifically configured to: send the configuration information to the terminal device by using high layer signaling.
  • the configuration information includes: detection time information of the unlicensed carrier, frequency information of the unlicensed carrier, and reporting condition of the LBT detection result.
  • the configuration information further includes: the number of detections in the detection time of the unlicensed carrier and/or the bandwidth of the unlicensed carrier.
  • the idle information of the unlicensed carrier includes an LBT success rate, and the LBT success rate is a ratio of the number of idle times detected by the unlicensed carrier at the detection time to the number of detections.
  • the unlicensed carrier included in the LBT detection result is all unlicensed carriers in the at least one unlicensed carrier; or the unlicensed carrier included in the LBT detection result is the at least one authorized carrier An unlicensed carrier with the highest LBT success rate; or the unlicensed carrier included in the LBT detection result is N unlicensed carriers with a higher LBT success rate in the at least one authorized carrier, and N is greater than or equal to 2; or And the unlicensed carrier included in the LBT detection result is an unlicensed carrier in which the LBT success rate is higher than the first threshold in the at least one authorized carrier.
  • the sending module 11 is specifically configured to: send, by using downlink high-level signaling, the terminal device a configuration information, where the first configuration information includes a frequency point and an index of each unlicensed spectrum in the unlicensed carrier set, where the unlicensed carrier set includes an unlicensed carrier of the first base station and/or the second base station; Physical layer signaling or downlink MAC layer signaling, where the second configuration information is sent to the terminal device, where the second configuration information includes an index of the at least one unlicensed carrier, and the at least one unlicensed carrier belongs to the unauthorized Carrier set.
  • the idle information of the unlicensed carrier indicates busy or idle by at least one bit.
  • the sending module 11 is configured to send the configuration information to the terminal device by using downlink physical layer signaling or downlink MAC layer signaling, where the configuration information includes the at least one unlicensed carrier. Frequency.
  • the idle information of the unlicensed carrier indicates busy or idle by at least one bit.
  • the LBT detection result is carried in the uplink physical layer signaling or the uplink MAC layer signaling, where the downlink physical layer signaling and the uplink physical layer signaling are sent on the authorized carrier.
  • the at least one unlicensed carrier includes an unlicensed carrier of the first base station and/or an unlicensed carrier of the second base station; and the unlicensed carrier included in the LBT detection result includes the first base station and And an unlicensed carrier of the second base station; the first base station and the second base station are base stations for performing DC communication on the terminal device.
  • the first base station is a base station where the primary cell and the secondary cell of the terminal device are located, and the at least one unlicensed carrier includes an unlicensed carrier of the secondary cell.
  • the first base station in this embodiment may be used to perform the steps performed by the first base station in the methods provided in the first embodiment to the seventh embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • FIG. 10 is a schematic structural diagram of a terminal device according to Embodiment 9. As shown in FIG. 10, the terminal device in this embodiment includes:
  • the processing module 22 is configured to perform LBT detection on the unlicensed carrier according to the configuration information.
  • the sending module 23 is configured to send the LBT detection result to the first base station, where the LBT detection result includes idle information of all or part of the unlicensed carriers in the at least one unlicensed carrier.
  • the configuration information is sent by the first base station to the terminal device by using high layer signaling.
  • the configuration information includes: detection time information of the unlicensed carrier, frequency information of the unlicensed carrier, and reporting condition of the LBT detection result.
  • the configuration information further includes: the number of detections in the detection time of the unlicensed carrier and/or the bandwidth of the unlicensed carrier.
  • the idle information of the unlicensed carrier includes an LBT success rate, and the LBT success rate is a ratio of the number of idle times detected by the unlicensed carrier at the detection time to the number of detections.
  • the LBT detection result is carried in an uplink physical layer signaling or an uplink MAC layer signaling, where the downlink physical layer signaling and the uplink physical layer signaling are sent on an authorized carrier.
  • the receiving module 21 is further configured to receive configuration information sent by the second base station, where the second base station The sent configuration information is used to indicate that the terminal device performs LBT detection on the unlicensed carrier of the second base station; the processing module 22 is further configured to perform LBT detection according to the configuration information sent by the second base station; The sending module 23 is further configured to send an LBT detection result to the second base station, where the LBT detection result sent to the second base station includes idle information of the unlicensed carrier of the second base station.
  • FIG. 11 is a schematic structural diagram of a first base station according to Embodiment 10.
  • the first base station 300 of this embodiment includes: a processor 31, a memory 32, a receiver 33, and a transmitter 34.
  • the receiver 33 and the transmitter 34 are connected and communicated with the processor 31 via a bus
  • the memory 31 is configured to store computer execution instructions
  • the processor 31 is configured to execute the computer to execute instructions to enable the A base station 300 performs the steps performed by the first base station in the methods provided in the foregoing Embodiments 1 to 7.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • FIG. 12 is a schematic structural diagram of a terminal device according to Embodiment 11.
  • the terminal device 400 of this embodiment includes: a processor 41, a memory 42, a receiver 43, and a transmitter 44.
  • the receiver 43 and the transmitter 44 are connected and communicated with the processor 41 via a bus
  • the memory 41 is for storing computer execution instructions
  • the processor 41 is configured to execute the computer to execute instructions to enable the terminal device 400 performs the steps performed by the terminal device in the methods provided in the first embodiment to the seventh embodiment.
  • the specific implementation and technical effects are similar, and are not described here.
  • the computer instructions can be stored in a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, coaxial cable, fiber optic, digital subscriber line (DSL), or wireless (eg, infrared, wireless, microwave, etc.).
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the described device embodiments are only schematic.
  • the division of the unit is only a logical function division, and the actual implementation may have another division manner.
  • multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • the units described as separate components may or may not be physically separate, ie may be located in one place, or may be distributed over multiple network elements. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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Abstract

L'invention concerne un procédé et un appareil de planification de liaison montante basés sur une porteuse sans licence. Le procédé comprend les étapes suivantes : une première station de base envoie des informations de configuration à un dispositif terminal, les informations de configuration étant utilisées pour ordonner au dispositif terminal d'effectuer une détection LBT sur au moins une porteuse sans licence ; le dispositif de terminal effectuant une détection LBT sur la porteuse sans licence selon les informations de configuration, et envoyant un résultat de détection LBT à la première station de base ; et la première station de base détermine, selon le résultat de détection LBT, les porteuses sans licence pour une transmission en liaison montante pour le dispositif terminal, le résultat de détection LBT comprenant des informations au repos concernant tout ou partie de l'une ou des porteuses sans licence. Étant donné qu'une porteuse sans licence déterminée selon un résultat de détection LBT est au repos, le problème selon lequel un dispositif terminal ne peut pas envoyer des données en raison du fait que la porteuse sans licence sélectionnée par une station de base est occupée peut être empêché, et un retard temporel pendant la transmission de données est réduit.
PCT/CN2017/088307 2017-03-29 2017-06-14 Procédé et appareil de planification de liaison montante basés sur une porteuse sans licence WO2018176634A1 (fr)

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