WO2018006742A1 - Procédé de planification de données de liaison montante, équipement utilisateur, et station de base - Google Patents

Procédé de planification de données de liaison montante, équipement utilisateur, et station de base Download PDF

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Publication number
WO2018006742A1
WO2018006742A1 PCT/CN2017/090568 CN2017090568W WO2018006742A1 WO 2018006742 A1 WO2018006742 A1 WO 2018006742A1 CN 2017090568 W CN2017090568 W CN 2017090568W WO 2018006742 A1 WO2018006742 A1 WO 2018006742A1
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Prior art keywords
subframe
configuration
downlink subframe
target downlink
reference subframe
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PCT/CN2017/090568
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English (en)
Chinese (zh)
Inventor
朱广勇
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深圳市金立通信设备有限公司
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Publication of WO2018006742A1 publication Critical patent/WO2018006742A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to an uplink data scheduling method, a user equipment, and a base station.
  • the licensed frequency bands in 3GPP networks are increasingly unable to meet the increasing traffic volume.
  • 3GPP organizations have proposed auxiliary access (English: Licensed Assisted Access, LAA for short)
  • LAA Licensed Assisted Access
  • LTE Long Term Evolution
  • the radio frame has 7 different uplink and downlink subframe configuration information, and each of the uplink and downlink subframe configuration information corresponds to an uplink hybrid repeat request (Hybrid Automatic Repeat Request, HARQ) timing.
  • HARQ Hybrid Automatic Repeat Request
  • Relationship, the uplink HARQ timing relationship includes a timing relationship between downlink data and uplink data.
  • the LAA system needs to follow some existing usage principles of the unlicensed frequency band.
  • the Listen Before Talk (LBT) mechanism is used.
  • the LBT is used by LTE devices to monitor channels on unlicensed bands. Whether it is idle or not, when the channel is idle, the resources of the channel are scheduled. Due to the existence of the LBT mechanism, the number of uplink and downlink subframes of the existing system (such as the LTE system) and the distribution of the uplink and downlink subframes are changed, thereby generating uplink and downlink subframes that do not exist in some existing systems (such as the LTE system).
  • the configuration information is such that the LAA system cannot perform uplink scheduling and uplink transmission normally, for example, some uplink data cannot be scheduled.
  • the embodiment of the invention provides an uplink data scheduling method, a user equipment, and a base station, which can improve the success rate of uplink data scheduling.
  • a first aspect of the embodiments of the present invention provides an uplink data scheduling method, which may include:
  • the target downlink subframe is determined, where the target downlink subframe is used by the base station for the physical uplink shared channel for the UE.
  • Target downlink subframe Sending the target downlink subframe to the UE, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe, so that the UE determines according to the reference subframe configuration of the target downlink subframe.
  • target downlink subframe includes reference subframe configuration information of the target downlink subframe, so that the UE determines according to the reference subframe configuration of the target downlink subframe.
  • hybrid automatic repeat request HARQ timing relationship and performing uplink data transmission according to the hybrid automatic repeat request HARQ timing relationship.
  • a second aspect of the embodiments of the present invention provides an uplink data scheduling method, which may include:
  • a target downlink subframe that is sent by the base station, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe, where the reference subframe configuration information is used to indicate the target downlink subframe.
  • Reference subframe configuration ;
  • a third aspect of the embodiments of the present invention provides a base station, which may include:
  • a first determining unit configured to: when the base station sends a downlink subframe to the user equipment UE in the unlicensed frequency band, determine a target downlink subframe, where the target downlink subframe is used by the base station to perform physical uplink for the UE a downlink subframe of the PUSCH uplink scheduling of the shared channel;
  • a second determining unit configured to determine, according to the configuration of the target downlink subframe, a reference subframe configuration of the target downlink subframe from a preset set of reference subframe configurations, where the target downlink subframe is configured Configuring at least one configuration different from the set of reference subframe configurations;
  • a sending unit configured to send the target downlink subframe to the UE, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe, so that the UE is configured according to the target downlink subframe
  • the reference subframe configuration determines a corresponding hybrid automatic repeat request HARQ timing relationship, and performs uplink data transmission according to the hybrid automatic repeat request HARQ timing relationship.
  • a fourth aspect of the embodiments of the present invention provides a user equipment UE, which may include:
  • a receiving unit configured to receive, in an unlicensed frequency band, a target downlink subframe that is sent by the base station, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe, where the reference subframe configuration information is used to indicate a reference subframe configuration of the target downlink subframe;
  • a determining unit configured to determine a HARQ timing relationship corresponding to the reference subframe configuration of the target downlink subframe according to the hybrid automatic repeat request HARQ timing relationship corresponding to the set of the reference subframe configuration configured in advance;
  • a sending unit configured to perform uplink data transmission according to the corresponding HARQ timing relationship of the reference subframe configuration of the target downlink subframe.
  • the target downlink subframe to be transmitted is determined, and the reference subframe of the target downlink subframe is determined according to the target downlink subframe.
  • the configuration is performed to send the reference subframe configuration information of the target downlink subframe to the UE, so that the UR performs uplink data transmission according to the HARQ timing corresponding to the reference subframe configuration information of the target downlink subframe, so as to implement scheduling of the uplink data by the base station.
  • the embodiment of the present invention can perform uplink scheduling and transmission on uplink and downlink subframe configuration information that does not exist in the LAA system, and can perform uplink scheduling and transmission for all uplink and downlink subframe configurations, thereby improving the success rate of uplink data scheduling. .
  • FIG. 1 is a schematic diagram of an LTE network architecture disclosed in an embodiment of the present invention.
  • FIG. 2 is a schematic flowchart of an uplink data scheduling method according to an embodiment of the present invention.
  • FIG. 3 is a schematic flowchart of another uplink data scheduling method according to an embodiment of the present invention.
  • FIG. 4 is a schematic flowchart diagram of another uplink data scheduling method according to an embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 7 is a schematic structural diagram of another base station according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a user equipment UE according to an embodiment of the present disclosure.
  • FIG. 9 is a schematic structural diagram of still another base station according to an embodiment of the present disclosure.
  • FIG. 10 is a schematic structural diagram of still another user equipment UE according to an embodiment of the present invention.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • Frequency Division Multiple Access Frequency Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Division Multiple Access
  • SC-FDMA Single-Carrier Frequency-Division Multiple Access
  • a CDMA network can implement wireless technologies such as Universal Telecommunication Radio Access (UTRA) and the Telecommunications Industry Association (TIA).
  • UTRA technology includes Wideband CDMA (WCDMA). And other variants of CDMA. Technologies include the IS-2000, IS-95 and IS-856 standards from the Electronic Industries Association (EIA) and TIA.
  • TDMA networks can be implemented such as Global System for Mobile Communication (Global System for Mobile Communication) Wireless technology such as GSM).
  • OFDMA system To achieve such things as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wireless Fidelity, Wi-Fi), IEEE 802.16 (Worldwide Interoperability for Microwave) Wireless technologies such as Access, WiMAX, IEEE 802.20, and Flash-OFDMA.
  • E-UTRA Evolved UTRA
  • UMB Ultra Mobile Broadband
  • IEEE 802.11 Wireless Fidelity, Wi-Fi
  • IEEE 802.16 Worldwide Interoperability for Microwave
  • UTRA and E-UTRA technologies are part of the Universal Mobile Telecommunications System (UMTS).
  • 3GPP Long Term Evolution (LTE) and LTE-Advanced (LTE-A) are newer versions of UMTS that use E-UTRA.
  • UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project” (3GPP).
  • UMB is described in documents from an organization called “3rd Generation Partnership Project 2" (3GPP2).
  • the techniques described herein may be used for the wireless networks and wireless access technologies mentioned above, as well as other wireless networks and wireless access technologies.
  • LTE or LTE-A or collectively referred to as "LTE/-A”
  • LTE/-A terminology is used in many of the descriptions below.
  • An eNodeB may be a station that communicates with a user equipment UE, and may also be referred to as a base station, a Node B, an access point, and the like. Each eNB can provide communication coverage for a particular geographic area.
  • the term "cell" may refer to such a particular geographic coverage area of an eNB and/or such a particular geographic coverage area of an eNB subsystem serving the coverage area, depending on the context in which the term is used.
  • the eNB may provide communication coverage for macro cells, pico cells, femto cells, and/or other types of cells.
  • a macro cell typically covers a relatively large geographic area (e.g., a range of several kilometers in radius) and may allow unrestricted access by UEs having subscriptions to services of the network provider.
  • a pico cell typically covers a relatively small geographic area and may allow unrestricted access by UEs having subscriptions to services of the network provider.
  • a femto cell typically also covers a relatively small geographic area (eg, a home) and may provide restricted access (eg, a closed user group) with UEs associated with the femto cell in addition to unrestricted access.
  • the eNB of the macro cell may be referred to as a macro eNB.
  • An eNB of a pico cell may be referred to as a pico eNB.
  • the eNB of the femto cell may be referred to as a femto eNB or a home eNB.
  • FIG. 1 is a schematic diagram of an LTE network architecture according to an embodiment of the present invention. As shown in FIG. 1
  • the user equipment English: User Equipment, UE for short
  • the evolved terrestrial radio access network English: Universal Terrestrial Radio Access Network, E-UTRAN
  • the service gateway English: Serving Gateway, Referred to as SGW
  • packet data network gateway English: PDN Gateway, PGW for short
  • external packet data network English: Packet Data Network, PDN for short
  • policy and charging rules function English: Policy and Charging Rules Function, referred to as PCRF
  • MME Mobility Management Entity
  • HSS Home Subscriber Server
  • GPRS Service Support Node English: Serving GPRS Support Node, SGSN for short
  • the UE may perform uplink and downlink data exchange with the PDN 105 through the eNB (base station) 1021 in the E-UTRAN 102.
  • the UE needs to notify the eNB that the UE has an uplink. The data needs to be transmitted.
  • the eNB After the eNB knows that the UE needs to transmit the uplink and downlink data, the eNB performs uplink data scheduling for the UE.
  • the present invention designs an uplink data scheduling method, which can improve the success rate of uplink data scheduling. It should be noted that the description of the network architecture in the embodiments of the present invention is only an example, and should not be construed as limiting. The method disclosed by the present invention can also be applied to a network architecture of a subsequent evolution (for example, next generation 5G).
  • FIG. 2 is a schematic flowchart of an uplink data scheduling method according to an embodiment of the present invention. As shown in FIG. 2, the data scheduling method includes the following steps.
  • the base station determines the target downlink subframe, where the target downlink subframe is a downlink subframe used by the base station to perform physical uplink shared channel PUSCH uplink scheduling for the UE.
  • the base station when the base station sends a downlink subframe to the user equipment UE in the unlicensed frequency band, the base station determines the target downlink subframe, where the target downlink subframe is used by the base station for the UE to perform the physical uplink shared channel. : Physical Uplink Shared Channel, abbreviated as: PUSCH)
  • the downlink subframe of the PUSCH uplink scheduling For example, the base station sends the downlink subframe to the UE as three consecutive downlink subframes “DDD” on the unlicensed frequency band, and the base station determines that the downlink subframe for performing PUSCH uplink scheduling for the UE is two consecutive downlinks. Subframe "DD", the base station determines that the target downlink subframe is "DD".
  • the base station determines, according to the configuration of the target downlink subframe, a reference subframe configuration of the target downlink subframe from a set of the preset reference subframe configurations, where the configuration of the target downlink subframe is different from the reference subframe configuration. At least one configuration.
  • the base station determines, according to the configuration of the target downlink subframe, the reference subframe configuration of the target downlink subframe from the preset set of reference subframe configurations.
  • the configuration of the target downlink subframe may be a combination of consecutive downlink subframes, or may be a downlink subframe, or may be a combination of several phased downlink subframes or several consecutive downlink subframes, etc. .
  • the configuration of the target downlink subframe may be “DDD”, “DDDDD”, “DXDXXD”, “DDDXXD”, “DDDXXDDD”, and the like, where “D” refers to a downlink subframe for performing PUSCH uplink scheduling, and “X” refers to other subframes except for a downlink subframe used for PUSCH uplink scheduling. frame. It should be noted that in the time division duplex TDD system, the number of all subframes in the configuration of the target downlink subframe cannot exceed 10, and the number of "D"s in the configuration of the target downlink subframe cannot exceed 9.
  • the reference subframe configuration set may be sent to the UE through the base station, for example, the base station may refer to the radio resource control RRC signaling or the broadcast signaling.
  • the set of subframe configurations is sent to the UE.
  • the preset reference subframe configuration set includes seven reference subframe configurations in the time division duplex TDD system, and the subframes in the reference subframe configuration set may be time division duplex (English: Time Division Duplexing,
  • the sub-frame structure of the TDD system in the subframe of the TDD system, one radio frame includes 10 different uplink and downlink subframes, each sub-frame occupies 1 millisecond, and 7 different uplink and downlink subframe configurations are used, and the reference sub-frame
  • the frame configuration set may include 7 different uplink and downlink subframe configurations, as shown in Table 1.
  • Table 1 is a schematic diagram of a subframe structure configuration of a reference subframe configuration according to an embodiment of the present invention.
  • the uplink and downlink subframe configuration numbers 0 to 6 represent 7 different uplink and downlink subframe configurations, for example,
  • the uplink and downlink subframe configuration sequence number 0 is “DSUUUDSUUU”, and the subframe number 0 and the subframe number 5 are downlink subframes “D” for transmitting downlink subframes; subframe numbers 2, 3, 4, 7, 8, and 9 are all Used as an uplink subframe for transmitting uplink Data
  • subframe number 1 and subframe number 6 are special subframes "S”
  • special subframe "S” includes pilots, control signaling, etc., which can be used for downlink transmission, and special subframe "S” is used to prevent uplink.
  • the reference subframe configuration of the target downlink subframe may be determined as the uplink and downlink subframe configuration sequence numbers 1, 2, 3, and 4.
  • the reference subframe configuration of the target downlink subframe may be configured as the uplink and downlink subframe configuration sequence number 2, 3 Any one of 4, 5; if the configuration of the target downlink subframe is five consecutive downlink subframes "DDDDD", it may be determined that the reference subframe configuration of the target downlink subframe is the uplink and downlink subframe configuration sequence number 3, Any one of 4, 5; if the configuration of the target downlink subframe is "DXDXXD", it may be determined that the reference subframe of the target downlink subframe is configured as the uplink and downlink subframe configuration sequence numbers 1, 2, 3, 4, and 5.
  • the reference subframe of the target downlink subframe is configured as any one of the uplink and downlink subframe configuration numbers 1, 2, 3, 4, and 5. If the target downlink subframe configuration is "DDDXXDDD", the target downlink subframe can be determined.
  • the reference subframe is configured as any one of the uplink and downlink subframe configuration numbers 1, 2, 4, and 5.
  • the reference subframe configuration of the target downlink subframe may be found from the set of the reference subframe configuration, and the foregoing may be determined from the set of the reference subframe configuration.
  • the reference subframe configuration of the configuration of the target downlink subframe determines the reference subframe configuration with the smallest number of downlink subframes as the reference subframe configuration of the target downlink subframe from the configured reference subframe configuration including the target downlink subframe.
  • Each of the uplink and downlink subframe configurations has an uplink and downlink switching period, that is, an appearance period of the S subframe. If the uplink and downlink switching period is 5 milliseconds, the appearance period of the S subframe is 5 milliseconds, and if the uplink and downlink switching period is 10 In milliseconds, the appearance period of the S subframe is 10 milliseconds. The delay of the uplink and downlink subframe configuration with the uplink and downlink switching period of 5 milliseconds is better. The system capacity loss of the uplink and downlink subframes with the uplink and downlink switching period of 10 milliseconds is small, and more uplink and downlink subframes can be transmitted. .
  • step 202 may include the following steps:
  • the base station determines whether the configuration of the target downlink subframe is a subset of the downlink subframe configuration configured by the at least one reference subframe in the set of reference subframe configurations;
  • the base station determines, from the at least one reference subframe configuration, a reference subframe configuration as a reference subframe configuration of the target downlink subframe.
  • the base station selects a reference subframe from a preset according to the configuration of the target downlink subframe.
  • the manner of determining the configuration of the reference subframe of the target downlink subframe in the configured set may be: determining, by the base station, whether the configuration of the target downlink subframe is the configuration of the downlink subframe configured by the at least one reference subframe in the set of the reference subframe configuration. The subset, if so, the base station determines a reference subframe configuration from the at least one reference subframe configuration as the reference subframe configuration of the target downlink subframe.
  • the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 0 is configured as "DSUUUDSUUU"; the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 1 is configured as “DSUUDDSUUD”; the uplink and downlink subframe configuration sequence number 2 is The downlink subframe is configured as "DSUDDDSUDD"; the downlink subframe in the uplink and downlink subframe configuration sequence number 3 is configured as "DSUUUDDDDD”; the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 4 is configured as "DSUUDDDDDD"; The downlink subframe configuration in the frame configuration sequence number 5 is “DSUDDDDDDD"; the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 6 is "DSUUUDSUUD".
  • the uplink and downlink subframe configuration numbers 1, 2, 3, 4, 5, and 6 all include three consecutive downlink subframes (please Referring to Table 1, the subframe numbers 9, 0, and 1 in the uplink and downlink subframe configuration sequence number 1 "DSUUDDSUUD” are three consecutive downlink subframes, and the subframe number 3 in the uplink and downlink subframe configuration sequence number 2 "DSUDDDSUDD", 4, 5 are three consecutive downlink subframes, and the subframe numbers 5, 6, and 7 in the uplink and downlink subframe configuration sequence number 3 "DSUUUDDDDD" are three consecutive downlink subframes, and the uplink and downlink subframe configuration sequence number 4 "DSUUDDDDDD"
  • the subframe numbers 5, 6, and 7 in the frame are three consecutive downlink subframes
  • the subframe numbers 5, 6, and 7 in the uplink and downlink subframe configuration sequence number 5 "DSUDDDDDDD” are three consecutive downlink subframes.
  • the reference subframe configuration of the target downlink subframe may be determined to be in the set of the reference subframe configuration.
  • the row subframe configuration number is any one of 1, 2, 3, 4, 5, and 6.
  • the sequence number of the uplink and downlink subframes is 1, 2, 3, and 4. 5, 6 randomly select a reference subframe configuration as the target downlink subframe. If the configuration of the target downlink subframe is five consecutive downlink subframes "DDDDD", the uplink and downlink subframe configuration numbers 3, 4, and 5 each include five consecutive downlink subframes (refer to Table 1, uplink and downlink subframes).
  • the subframe numbers 5, 6, 7, 8, and 9 in the sequence number 3 "DSUUUDDDDD" are five consecutive downlink subframes, and the subframe numbers 5, 6, and 7 in the uplink and downlink subframe configuration sequence number 4 "DSUUDDDDDD” are configured. 8 and 9 are five consecutive downlink subframes, and the subframe numbers 5, 6, 7, 8, and 9 in the uplink and downlink subframe configuration sequence number 5 “DSUDDDDDDD” are five consecutive downlink subframes), and the target can be determined.
  • the reference subframe of the downlink subframe is configured as the uplink and downlink subframe configuration numbers 3, 4, and 5 in the set of the reference subframe configuration.
  • one of the uplink and downlink subframe configuration numbers 3, 4, and 5 is randomly selected as the reference subframe configuration of the target downlink subframe.
  • the uplink and downlink subframe configuration numbers 1, 2, 4, and 5 each include subframes of two subframes separated by three consecutive downlink subframes and three downlink consecutive subframes.
  • Configuration (refer to Table 1, the uplink and downlink subframe configuration sequence number 1 "DSUUDDSUUD" includes three consecutive downlink subframes with subframe numbers of 4, 5, and 6 and three consecutive downlink subframes with subframe numbers of 9, 0, and 1.
  • the frame, the uplink and downlink subframe configuration sequence number 2 "DSUDDDSUDD" includes three consecutive downlink subframes with subframe numbers of 3, 4, and 5 and three consecutive downlink subframes with subframe numbers of 8, 9, and 0.
  • the frame configuration number 4 "DSUUDDDDDD” includes three consecutive downlink subframes with subframe numbers of 4, 5, and 6 and three consecutive downlink subframes with subframe numbers of 9, 0, and 1, and the uplink and downlink subframes are configured with sequence number 5" DSUDDDDDDD includes three consecutive downlink subframes with subframe numbers of 3, 4, and 5 and three consecutive downlink subframes with subframe numbers of 8, 9, and 0.
  • the reference subframe configuration of the target downlink subframe can be determined.
  • Step (11) and step (12) are implemented, as long as the configuration of the target downlink subframe is a subset of the configuration of the downlink subframe configured by at least one reference subframe configured in the reference subframe configuration, at least one reference subframe Any one of the frame configurations is configured as the target test subframe, and the corresponding target reference subframe configuration can be found for any uplink and downlink subframe, so that the uplink data is scheduled and transmitted according to the target reference subframe configuration, and the uplink data can be improved.
  • the success rate of scheduling is performed by the configuration of the target downlink subframe is a subset of the configuration of the downlink subframe configured by at least one reference subframe configured in the reference subframe configuration, at least one reference subframe Any one of the frame configurations is configured as the target test subframe, and the corresponding target reference subframe configuration can be found for any uplink and downlink subframe, so that the uplink data is scheduled and transmitted according to the target reference subframe configuration, and the uplink data can be improved.
  • the success rate of scheduling is
  • step (12) the determining, by the base station, the configuration of the reference subframe from the at least one reference subframe configuration as the reference subframe configuration of the target downlink subframe may be:
  • the base station determines a reference subframe configuration with the smallest number of downlink subframes from the at least one reference subframe configuration, and configures the reference subframe configuration with the minimum number of downlink subframes as the reference subframe configuration of the target downlink subframe.
  • the uplink and downlink subframe configuration numbers 1, 2, 3, 4, 5, and 6 all include three.
  • the reference subframe configuration of the target downlink subframe may be configured as one of the uplink and downlink subframe configuration numbers of the reference subframe configuration, which are 1, 2, 3, 4, 5, and 6.
  • the subframe configuration with the smallest number of selected downlink subframes in the uplink and downlink subframe configuration sequence numbers 1, 2, 3, 4, 5, and 6 is configured as the reference subframe configuration of the target downlink subframe, because the uplink and downlink subframe configuration
  • the number of downlink subframes with the sequence numbers 1, 2, 3, 4, 5, and 6 is 6, 8, 7, 8, 9, and 5, respectively, and the uplink and downlink subframe configuration sequence number is 6 as the target downlink subframe.
  • Reference subframe configuration If the configuration of the target downlink subframe is five consecutive downlink subframes "DDDDD", since the uplink and downlink subframe configuration numbers 3, 4, and 5 each include five consecutive downlink subframes, the reference of the target downlink subframe may be determined.
  • the sub-frame is configured as one of the uplink and downlink subframe configuration numbers 3, 4, and 5 in the set of the reference subframe configuration, and selects one of the downlink subframe configuration numbers 3, 4, and 5 that has the least number of downlink subframes.
  • the frame configuration is configured as the reference subframe of the target downlink subframe.
  • the number of downlink subframes with the sequence number of the uplink and downlink subframes is 3, 4, and 5 is 7, 8, and 9, respectively.
  • a reference subframe configuration as a target downlink subframe. If the configuration of the target downlink subframe is "DDDXXDDD", the uplink and downlink subframe configuration numbers 1, 2, 4, and 5 each include subframes of two subframes separated by three consecutive downlink subframes and three downlink consecutive subframes.
  • the configuration may be performed by determining that the reference subframe of the target downlink subframe is one of the uplink and downlink subframe configuration numbers 1, 2, 4, and 5, and selecting the downlink from the uplink and downlink subframe configuration numbers 1, 2, 4, and 5.
  • the subframe configuration with the smallest number of subframes is configured as the reference subframe configuration of the target downlink subframe, and the number of downlink subframes with the sequence number of the uplink and downlink subframes is 1, 2, 4, and 5 are 6, 8, 8, respectively.
  • the uplink and downlink subframe configuration sequence number is 1 as the reference subframe configuration of the target downlink subframe.
  • the corresponding target reference subframe configuration can be found for any uplink and downlink subframes, so that the uplink data is scheduled and transmitted according to the target reference subframe configuration, which can improve the success rate of uplink data scheduling.
  • the reference subframe configuration with the smallest number of downlink subframes is configured as the target reference subframe configuration, which can reduce the signaling overhead on the uplink and downlink time slots and distribute the control signaling as much as possible while minimizing the scheduling delay.
  • the base station can determine the reference subframe configuration of the target downlink subframe from the preset set of reference subframe configurations, and the present invention can also The reference subframe configuration of the target downlink subframe is determined from the set of the preset reference subframe configurations in other manners, and the invention is not particularly limited herein.
  • each target downlink subframe configuration and its reference subframe configuration (one-to-one correspondence), or multiple target downlink subframe configurations and reference fingers thereof may be established.
  • the correspondence between the frame configurations (a plurality of corresponding ones) is saved in the set of the reference subframe configuration in the manner of the mapping table.
  • the reference subframe configuration of the target downlink subframe can be directly found from the set of reference subframe configurations, and the process of selecting the determination every time is avoided. This method has proven to be effective, especially when there are many possible ways to configure the target downlink subframe, which can save a lot of computation.
  • the base station sends a target downlink subframe to the UE, where the target downlink subframe includes the target downlink subframe. Refer to the subframe configuration information.
  • the target downlink subframe includes the reference subframe configuration information of the target downlink subframe, and the reference subframe configuration information of the target downlink subframe is used to indicate the reference subframe configuration of the target downlink subframe, where the base station can pass
  • the downlink control information (Downlink Control Information, DCI) included in the target downlink subframe is used to send the reference subframe configuration information of the target downlink subframe to the UE, where the DCI is used to indicate the reference subframe of the target downlink subframe.
  • Frame configuration information The base station only needs to send the sequence number of the target reference subframe configuration, and the UE can determine the reference subframe configuration of the target downlink subframe according to the sequence number.
  • the UE determines a corresponding hybrid automatic repeat request (HARQ) timing relationship according to the reference subframe configuration of the target downlink subframe, and performs uplink data transmission according to the hybrid automatic repeat request HARQ timing relationship.
  • HARQ hybrid automatic repeat request
  • the base station sends the target downlink subframe to the UE, and the target downlink subframe includes the reference subframe configuration information of the target downlink subframe, and the UE obtains the target downlink configuration after receiving the reference subframe configuration information of the target downlink subframe.
  • the reference subframe configuration of the subframe the UE determines the hybrid automatic repeat request (Hybrid Automatic Repeat Request, HARQ) HARQ timing relationship according to the reference subframe configuration of the target downlink subframe, and performs uplink according to the HARQ timing relationship.
  • Data is sent.
  • the HARQ timing relationship includes a timing relationship between the downlink subframe and the uplink data (that is, the UE receives the downlink subframe for scheduling the uplink subframe, and after the target downlink subframe, transmits the target downlink subframe scheduling after a certain delay.
  • Uplink subframes for example, uplink scheduling grant information (English: Uplink grant, UL for short) and physical uplink shared channel (English: Physical Uplink Shared Channel, PUSCH) for uplink data transmission or retransmission
  • uplink scheduling grant information English: Uplink grant, UL for short
  • physical uplink shared channel English: Physical Uplink Shared Channel, PUSCH
  • Each of the reference subframe configurations corresponds to a HARQ timing relationship, as shown in Table 2.
  • Table 2 is a HARQ timing relationship table corresponding to the reference subframe configuration disclosed in the embodiment of the present invention.
  • Table 2 when the UE receives the downlink subframe for performing PUSCH uplink scheduling in the subframe number i, The uplink data transmission of the PUSCH is performed after i+k subframes, and k is the number below the subframe numbers 0-9 in Table 2. For example, if the uplink and downlink subframe configuration information sequence number is 0, if the UE receives the downlink subframe for performing PUSCH uplink scheduling in the subframe number 1, the UE is after i+k (1+6) subframes.
  • uplink data transmission of the PUSCH that is, the UE transmits uplink data of the PUSCH in the seventh subframe; if the UE receives the downlink subframe for performing PUSCH uplink scheduling in the subframe number 5, the UE is at i+k (5+4) After the subframes, the uplink data transmission of the PUSCH is performed, that is, the UE transmits the uplink data of the PUSCH in the ninth subframe.
  • the preset set of reference subframe configurations includes a “DUUUUUUUUU” subframe configuration in addition to the seven reference subframe configurations in the time division duplex TDD system.
  • the preset reference subframe configuration set includes 7 reference subframe configurations and a newly added “DUUUUUUUU” subframe configuration in the time division duplex TDD system in Table 1, and a total of 8 reference subframes. Configure a set of reference subframe configurations, as shown in Table 3.
  • Table 3 is a schematic diagram of a subframe structure configuration of another reference subframe configuration disclosed in the embodiment of the present invention. As shown in Table 3, Table 3 includes seven reference subframe configurations with sequence numbers 0 to 6 in Table 1. In addition, the new sub-frame configuration of the uplink and downlink subframes with the sequence number of 7 is configured, and the subframe configuration includes one downlink subframe and nine uplink subframes, which is a special uplink and downlink subframe. In the configuration, when the target downlink subframe is only in the subframe number 0, the DUUUUUUUUU subframe configuration can be used, which can reduce the signaling overhead on the uplink and downlink time slots and distribute the control signaling as much as possible while minimizing the scheduling delay.
  • the HARQ timing relationship corresponding to the subframe configuration of the "DUUUUUUUUU" is that the UE continuously transmits 9 uplink subframes after receiving 4 subframes in one downlink subframe.
  • the details are shown in Table 4.
  • Table 4 is a HARQ timing relationship corresponding to another reference subframe configuration disclosed in the embodiment of the present invention.
  • Table 4 as shown in Table 4, in addition to the HARQ timing relationship corresponding to the seven reference subframe configurations with sequence numbers 0 to 6 in Table 2, the new uplink and downlink subframe configuration sequence number is 7.
  • the "DUUUUUUUUU" subframe is configured with a corresponding HARQ timing relationship, and the subframe configuration includes one downlink subframe and nine uplink subframes, and the corresponding HARQ timing relationship is: the UE receives the uplink scheduling for PUSCH in the subframe number 0. After the downlink subframe, starting from subframe number 4, 9 uplink subframes are continuously transmitted.
  • the DUUUUUUUUU" subframe configuration and the HARQ timing relationship shown in Table 4 can be used, which can reduce the signaling overhead on the uplink and downlink time slots and distribute the control signaling as much as possible. Minimize scheduling delays.
  • uplink scheduling and transmission can be performed for any uplink and downlink subframe configuration, and the success rate of uplink data scheduling is improved.
  • FIG. 3 is a schematic flowchart of another uplink data scheduling method according to an embodiment of the present invention. As shown in FIG. 3, the data scheduling method includes the following steps.
  • the base station determines the target downlink subframe, where the target downlink subframe is a downlink subframe used by the base station for the UE to perform physical uplink shared channel PUSCH uplink scheduling.
  • the base station determines, according to the configuration of the target downlink subframe, a reference subframe configuration of the target downlink subframe from a set of the preset reference subframe configurations, where the configuration of the target downlink subframe is different from the reference subframe configuration. At least one configuration.
  • the base station performs the LBT measurement after the first listening, the LBT measurement is used to detect the busy state of the channel, the channel is the channel of the unlicensed band, the target downlink subframe is based on the channel transmission, and the target downlink is used.
  • the frame includes a downlink subframe for performing physical uplink shared channel PUSCH uplink scheduling.
  • the base station when the base station sends the target downlink subframe to the user equipment UE, if the busy state of the channel needs to be detected at this time, the base station performs LBT measurement to detect the busy state of the channel, where the target downlink subframe Based on the above channel transmission. Since the LBT measurement takes time, the shortest time for performing LBT is 25 microseconds, and one subframe period is 1 millisecond. If the LBT failure is performed within one subframe (LBT failure, that is, the LBT detection channel is busy) If the downlink subframe cannot be sent, the base station discards the downlink subframe (notifies the UE when discarding) or sends the downlink subframe to other downlink subframes for transmission.
  • LBT failure that is, the LBT detection channel is busy
  • step 304 is performed.
  • the target channel is a channel of an unlicensed band, that is, the operating frequency of the target channel is located in an unlicensed band.
  • the LBT may affect the number of target downlink subframes that the base station sends to the UE. For example, the base station determines that the downlink subframe used for performing PUSCH uplink scheduling is three downlink subframes “DDD”. After performing LBT measurement, the base station determines. When the channel is in the idle state, if the LBT determines that the channel idle duration is two subframe durations, the base station determines that the target downlink subframe is "DD".
  • the base station sends a target downlink subframe to the UE, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe.
  • the UE determines a corresponding hybrid automatic repeat request (HARQ) timing relationship according to the reference subframe configuration of the target downlink subframe, and performs uplink data transmission according to the hybrid automatic repeat request HARQ timing relationship.
  • HARQ hybrid automatic repeat request
  • Steps 301 to 302 in FIG. 3 may refer to step 201 to step 202 in FIG. 2, and steps 304 to 305 may refer to step 203 to step 204 in FIG. 2, and details are not described herein again.
  • the base station after performing step 303, if the reference subframe configuration of the target downlink subframe determined by the base station changes, the base station sends a new reference subframe configuration to the UE by using control signaling.
  • the reference subframe configuration of the target downlink subframe is changed from the uplink and downlink subframe configuration sequence number 1 to the uplink and downlink subframe configuration sequence number 2, and then the base station sends the uplink and downlink subframe configuration sequence number 1 to the UE.
  • the uplink and downlink subframe configuration sequence number 2 is sent to the UE by the control signaling to notify the UE to change the reference subframe configuration of the target downlink frame from the uplink and downlink subframe configuration sequence number 1 to the uplink and downlink subframe configuration sequence number 2.
  • the reference subframe configuration of the target downlink subframe may change.
  • the base station needs to perform LBT measurement, the busy state of the channel is detected, and when the channel is idle, the target downlink subframe is transmitted, and any target downlink subframe configuration can be uplinked. Scheduling and transmission to improve the success rate of uplink data scheduling.
  • FIG. 4 is a schematic flowchart of another uplink data scheduling method according to an embodiment of the present invention. As shown in FIG. 4, the data scheduling method includes the following steps.
  • the UE receives, in an unlicensed frequency band, a target downlink subframe that is sent by the base station, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe, and the reference subframe configuration information is used to indicate the target downlink subframe.
  • the reference subframe configuration of the frame is used to indicate the target downlink subframe.
  • the UE receives the target downlink subframe that is sent by the base station, and the target downlink subframe carries the downlink control information DCI, where the DCI is used to indicate the reference subframe configuration information of the target downlink subframe, and the target downlink subframe.
  • the reference subframe configuration information is used to indicate a reference subframe configuration of the target downlink subframe.
  • the UE determines the HARQ timing relationship corresponding to the reference subframe configuration of the target downlink subframe according to the hybrid automatic repeat request HARQ timing relationship corresponding to the set of the reference subframe configuration set in advance.
  • the target downlink subframe includes the reference subframe configuration information of the target downlink subframe, and after receiving the reference subframe configuration information of the target downlink subframe, the UE obtains the reference subframe configuration of the target downlink subframe, where the UE may And determining a HARQ timing relationship corresponding to the target reference subframe configuration according to the hybrid automatic repeat request HARQ timing relationship corresponding to the set of the reference subframe configuration set in advance. See Table 1 for a reference set of reference subframe configuration information.
  • the HARQ timing relationship includes a timing relationship between the downlink subframe and the uplink data (that is, the UE receives the downlink subframe for scheduling the uplink subframe, and after the target downlink subframe, transmits the target downlink subframe scheduling after a certain delay.
  • Uplink subframes for example, uplink scheduling grant information (English: Uplink grant, UL for short) and physical uplink shared channel (English: Physical Uplink Shared Channel, PUSCH) for uplink data transmission or retransmission
  • uplink scheduling grant information English: Uplink grant, UL for short
  • PUSCH Physical Uplink Shared Channel
  • the UE may further receive a set of reference subframe configurations sent by the base station, for example, the UE controls RRC signaling through radio resources, or may be configured as a set of reference subframe configurations.
  • the broadcast signaling receives a set of reference subframe configurations sent by the base station.
  • the preset reference subframe configuration information set includes seven reference subframe configuration information in the time division duplex TDD system, and the subframe in the reference subframe configuration set may be time division duplex (English: Time Division)
  • the sub-frame structure of the Duplexing (TDD) system In the subframe of the TDD system, one radio frame includes 10 different uplink and downlink subframes, each sub-frame occupies 1 millisecond, and 7 different uplink and downlink subframe configurations are used.
  • the reference subframe configuration set may include 7 different uplink and downlink subframe configurations, as shown in Table 1. Each of the reference subframe configurations corresponds to a HARQ timing relationship, as shown in Table 2.
  • the preset set of reference subframe configurations includes time division duplexing
  • the seven reference subframe configurations in the TDD system also include the "DUUUUUUUUU" subframe configuration.
  • the preset reference subframe configuration set includes 7 reference subframe configurations and a newly added “DUUUUUUUU” subframe configuration in the time division duplex TDD system in Table 1, and a total of 8 reference subframes. Configure a set of reference subframe configurations, as shown in Table 3.
  • the HARQ timing relationship corresponding to the subframe configuration of the "DUUUUUUUUU" is that the UE continuously transmits 9 uplink subframes after receiving 4 subframes in one downlink subframe.
  • Table 4 The details are shown in Table 4. As can be seen from Table 4, each of the reference subframe configuration information corresponds to a HARQ timing relationship.
  • the UE performs uplink data transmission according to the corresponding HARQ timing relationship of the reference subframe configuration of the target downlink subframe.
  • the method shown in FIG. 4 is implemented, and the UE may determine the target reference sub-group according to the hybrid automatic retransmission request HARQ timing relationship corresponding to the set of the reference subframe configuration set in advance by using the reference subframe configuration information of the target downlink subframe sent by the base station.
  • the frame is configured with the corresponding HARQ timing relationship, and the uplink data is transmitted according to the corresponding HARQ timing relationship of the target reference subframe configuration, and the uplink data scheduling is performed by the base station side to ensure that the uplink data scheduling on the UE side does not become confusing, thereby improving the uplink data.
  • the success rate of scheduling is implemented, and the UE may determine the target reference sub-group according to the hybrid automatic retransmission request HARQ timing relationship corresponding to the set of the reference subframe configuration set in advance by using the reference subframe configuration information of the target downlink subframe sent by the base station.
  • the frame is configured with the corresponding HARQ timing relationship, and the uplink data is transmitted according to the corresponding HAR
  • FIG. 5 is a schematic structural diagram of a base station according to an embodiment of the present invention. As shown in FIG. 5, the method includes a first determining unit 501, a second determining unit 502, and a sending unit 503, where:
  • the first determining unit 501 is configured to: when the base station sends the downlink subframe to the user equipment UE in the unlicensed frequency band, determine the target downlink subframe, where the target downlink subframe is the base station for the UE to perform physical uplink shared channel PUSCH uplink scheduling The downlink subframe.
  • the first determining unit 501 determines the target downlink subframe, where the target downlink subframe is used by the base station for the UE to perform PUSCH uplink.
  • the scheduled downlink subframe For example, the base station sends the downlink subframe to the UE as three consecutive downlink subframes “DDD” on the unlicensed frequency band, and the base station determines that the downlink subframe for performing PUSCH uplink scheduling for the UE is two consecutive downlinks. Subframe "DD" then the base station determines that the target downlink subframe is "DD".
  • a second determining unit 502 configured to determine, according to a configuration of the target downlink subframe, a reference subframe configuration of the target downlink subframe from a preset set of reference subframe configurations, where the configuration of the target downlink subframe is different from the reference subframe At least one configuration in the set of frame configurations.
  • the second determining unit 502 determines the reference of the target downlink subframe from the preset set of reference subframe configurations according to the configuration of the target downlink subframe. Subframe configuration.
  • the preset reference subframe configuration set includes seven reference subframe configurations in the time division duplex TDD system, and the subframes in the reference subframe configuration set may be time division duplex (English: Time Division Duplexing, referred to as TDD) Subframe structure of the system.
  • TDD Time Division Duplexing
  • one radio frame includes 10 different uplink and downlink subframes, each subframe occupies 1 millisecond, and 7 different uplink and downlink subframe configuration information is used, and the reference subframe
  • the frame configuration set may include 7 different uplink and downlink subframe configurations, as shown in Table 1.
  • the sending unit 503 is configured to send a target downlink subframe to the UE, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe, so that the UE determines the corresponding hybrid automatic retransmission according to the reference subframe configuration of the target downlink subframe.
  • the HARQ timing relationship is requested, and the uplink data transmission is performed according to the hybrid automatic repeat request HARQ timing relationship.
  • the target downlink subframe includes the reference subframe configuration information of the target downlink subframe
  • the sending unit 503 may configure the reference subframe of the target downlink subframe by using the downlink control information DCI included in the target downlink subframe.
  • the information is sent to the UE, where the DCI is used to indicate reference subframe configuration information of the target downlink subframe.
  • FIG. 6 is a schematic structural diagram of another base station according to an embodiment of the present invention. As shown in FIG. 6, the method further includes a measuring unit 504, where:
  • the measuring unit 504 is configured to: when the busy state of the channel needs to be detected, perform LBT measurement after listening, LBT measurement is used to detect a busy state of the channel, the channel is a channel of an unlicensed band, and the target downlink subframe is based on channel transmission.
  • the target downlink subframe includes a downlink subframe used for performing PUSCH uplink scheduling.
  • the transmitting unit 503 transmits the target downlink subframe to the UE.
  • the measuring unit 504 when the sending unit 503 sends the target downlink subframe to the user equipment UE, if the busy state of the channel needs to be detected at this time, the measuring unit 504 performs LBT measurement to detect the busy state of the channel, where The target downlink subframe is based on the above channel transmission.
  • the LBT measurement is used to detect the busy state of the channel, and perform idle evaluation on the channel.
  • the touch sending unit 503 sends the target downlink subframe to the UE, when detecting When the above channel is in a busy state, that is, when the LBT fails, the LBT measurement is continued or the LBT measurement is performed after a period of time until the channel is detected to be in an idle state, and the touch sending unit 503 transmits the target downlink subframe to the UE.
  • the target channel is a channel of an unlicensed band, that is, the operating frequency of the target channel is located in an unlicensed band.
  • the sending unit 503 sends a new reference subframe configuration to the UE by using control signaling.
  • FIG. 7 is a schematic structural diagram of another base station according to an embodiment of the present invention.
  • the second determining unit 502 may include a third determining unit 5021 and a fourth determining unit 5022. ,among them:
  • a third determining unit 5021 configured to determine whether a configuration of the target downlink subframe is a subset of a downlink subframe configuration configured by at least one reference subframe in the set of reference subframe configurations;
  • the fourth determining unit 5022 is configured to, when the third determining unit 5021 determines that the result is YES, determine a reference subframe configuration as the reference subframe configuration of the target downlink subframe from the at least one reference subframe configuration.
  • the second determining unit may include a fifth determining unit, configured to use, according to the configuration of the target downlink subframe and the reference subframe configuration thereof, from a preset set of reference subframe configurations. Determining a reference subframe configuration of the target downlink subframe.
  • the second determining unit 502 may determine, according to the configuration of the target downlink subframe, the manner of determining the reference subframe configuration of the target downlink subframe from the set of the reference subframe configuration set in advance: the third determining unit.
  • the fourth determining unit 5022 determines one reference subframe configuration as the target from the at least one reference subframe configuration. Reference subframe configuration of the downlink subframe.
  • the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 0 is configured as "DSUUUDSUUU"; the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 1 is configured as “DSUUDDSUUD”; the uplink and downlink subframe configuration sequence number 2 is The downlink subframe in the uplink and downlink subframe configuration sequence number 3 is configured as "DSUUUDDDDD”; the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 4 is configured as "DSUDDDSUDD"; “DSUUDDDDDD”; the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 5 is “DSUDDDDDDD"; the downlink subframe configuration in the uplink and downlink subframe configuration sequence number 6 is "DSUUUDSUUD".
  • the uplink and downlink subframe configuration numbers 1, 2, 3, 4, 5, and 6 all include three consecutive downlink subframes (please Referring to Table 1, the subframe numbers 9, 0, and 1 in the uplink and downlink subframe configuration sequence number 1 "DSUUDDSUUD” are three consecutive downlink subframes, and the subframe number 3 in the uplink and downlink subframe configuration sequence number 2 "DSUDDDSUDD", 4, 5 are three consecutive downlink subframes, and the subframe numbers 5, 6, and 7 in the uplink and downlink subframe configuration sequence number 3 "DSUUUDDDDD" are three consecutive downlink subframes, and the uplink and downlink subframe configuration sequence number 4 "DSUUDDDDDD"
  • the subframe numbers 5, 6, and 7 in the frame are three consecutive downlink subframes
  • the subframe numbers 5, 6, and 7 in the uplink and downlink subframe configuration sequence number 5 "DSUDDDDDDD” are three consecutive downlink subframes.
  • the third subframe determining unit 5021 may determine that the reference subframe of the target downlink subframe is configured as the reference subframe, and the subframe number of the subframe sub-frame number “6, D, and 1 is three consecutive downlink subframes”.
  • the uplink and downlink subframe configuration numbers in the configured set are any one of 1, 2, 3, 4, 5, and 6, and the fourth determining unit 5022 is configured. 1,2,3,4,5,6 randomly selected in one kind of target reference subframe configuration of a downlink subframe number of a downlink subframe configuration. If the configuration of the target downlink subframe is five consecutive downlink subframes "DDDDD", the uplink and downlink subframe configuration numbers 3, 4, and 5 each include five consecutive downlink subframes (refer to Table 1, uplink and downlink subframes).
  • the subframe numbers 5, 6, 7, 8, and 9 in the sequence number 3 "DSUUUDDDDD" are five consecutive downlink subframes, and the subframe numbers 5, 6, and 7 in the uplink and downlink subframe configuration sequence number 4 "DSUUDDDDDD" are configured. 8 and 9 are five consecutive downlink subframes, and the subframe numbers 5, 6, 7, 8, and 9 in the uplink and downlink subframe configuration sequence number 5 “DSUDDDDD” are five consecutive downlink subframes, and the third determination is performed.
  • the unit 5021 may determine that the reference subframe of the target downlink subframe is configured as any one of the uplink and downlink subframe configuration sequence numbers 3, 4, and 5 in the set of the reference subframe configuration, and the fourth determining unit 5022 configures the sequence number from the uplink and downlink subframes. 3, 4, and 5 randomly select one of the reference subframe configurations as the target downlink subframe. If the configuration of the target downlink subframe is "DDDXXDDD", the uplink and downlink subframe configuration numbers 1, 2, 4, and 5 each include subframes of two subframes separated by three consecutive downlink subframes and three downlink consecutive subframes.
  • the uplink and downlink subframe configuration sequence number 1 "DSUUDDSUUD” includes three consecutive downlink subframes with subframe numbers of 4, 5, and 6 and three consecutive downlink subframes with subframe numbers of 9, 0, and 1.
  • the frame, the uplink and downlink subframe configuration sequence number 2 "DSUDDDSUDD” includes three consecutive downlink subframes with subframe numbers of 3, 4, and 5 and three consecutive downlink subframes with subframe numbers of 8, 9, and 0. frame
  • the configuration sequence number 4 “DSUUDDDDDD” includes three consecutive downlink subframes with subframe numbers of 4, 5, and 6 and three consecutive downlink subframes with subframe numbers of 9, 0, and 1, and the uplink and downlink subframes are configured with sequence number 5 “DSUDDDDDDD”.
  • the third determining unit 5021 can determine the target downlink subframe by including three consecutive downlink subframes with subframe numbers of 3, 4, and 5 and three consecutive downlink subframes with subframe numbers of 8, 9, and 0.
  • the reference subframe is configured as any one of the uplink and downlink subframe configuration numbers 1, 2, 4, and 5, and the fourth determining unit 5022 randomly selects one of the uplink and downlink subframe configuration numbers 1, 2, 4, and 5 as a target.
  • Reference subframe configuration of the downlink subframe According to the embodiment of the present invention, as long as the configuration of the target downlink subframe is a subset of the configuration of the downlink subframe configured by at least one reference subframe configured in the reference subframe configuration, at least one of the reference subframe configurations may be configured.
  • the corresponding target reference subframe configuration can be found for any uplink and downlink subframes, so that the uplink data is scheduled and transmitted according to the target reference subframe configuration, which can improve the success rate of uplink data scheduling.
  • the manner in which the fourth determining unit 5022 determines, from the at least one reference subframe configuration, a reference subframe configuration as a reference subframe configuration of the target downlink subframe is specifically:
  • the fourth determining unit 5022 determines, from the at least one reference subframe configuration, a reference subframe configuration with the smallest number of downlink subframes, and configures the reference subframe with the smallest number of downlink subframes as the reference subframe configuration of the target downlink subframe.
  • the uplink and downlink subframe configuration numbers 1, 2, 3, 4, 5, and 6 all include three.
  • the reference subframe configuration of the target downlink subframe may be configured as one of the uplink and downlink subframe configuration numbers of the reference subframe configuration, which are 1, 2, 3, 4, 5, and 6.
  • the fourth determining unit 5022 configures, as the reference subframe configuration of the target downlink subframe, a subframe configuration in which the number of selected downlink subframes in the uplink and downlink subframe configuration sequence numbers 1, 2, 3, 4, 5, and 6 is the smallest, because The number of downlink subframes whose sequence number is 1, 2, 3, 4, 5, and 6 is 6, 8, 7, 8, 9, and 5, respectively, and the fourth determining unit 5022 configures the uplink and downlink subframes.
  • the sequence number is 6 as the reference subframe configuration of the target downlink subframe.
  • the reference of the target downlink subframe may be determined.
  • the subframe is configured as one of the uplink and downlink subframe configuration numbers 3, 4, and 5 in the set of the reference subframe configuration, and the fourth determining unit 5022 selects the downlink subframe from the uplink and downlink subframe configuration numbers 3, 4, and 5.
  • the minimum number of subframe configurations is configured as the reference subframe configuration of the target downlink subframe, because the uplink and downlink subframe configuration sequence numbers are 3, 4, and 5.
  • the number of the downlink subframes is 7, 8, and 9, respectively, and the fourth determining unit 5022 configures the uplink and downlink subframe configuration sequence number 3 as the reference subframe configuration of the target downlink subframe.
  • the uplink and downlink subframe configuration numbers 1, 2, 4, and 5 each include subframes of two subframes separated by three consecutive downlink subframes and three downlink consecutive subframes.
  • the configuration may be performed to determine that the reference subframe of the target downlink subframe is configured as one of the uplink and downlink subframe configuration numbers 1, 2, 4, and 5, and the fourth determining unit 5022 configures the sequence numbers 1, 2, and 4 from the uplink and downlink subframes.
  • the sub-frame configuration in which the number of the downlink sub-frames is the smallest is selected as the reference sub-frame configuration of the target downlink sub-frame, and the number of downlink sub-frames in the uplink-downlink sub-frame configuration sequence of 1, 2, 4, and 5 is 6 respectively.
  • the fourth determining unit 5022 configures the uplink and downlink subframe configuration sequence number 1 as the reference subframe configuration of the target downlink subframe.
  • the corresponding target reference subframe configuration can be found for any uplink and downlink subframes, so that the uplink data is scheduled and transmitted according to the target reference subframe configuration, which can improve the success rate of uplink data scheduling.
  • the reference subframe configuration with the smallest number of downlink subframes is configured as the target reference subframe configuration, which can reduce the signaling overhead on the uplink and downlink time slots and distribute the control signaling as much as possible while minimizing the scheduling delay.
  • the base station can determine the reference subframe configuration of the target downlink subframe from the preset set of reference subframe configurations, and the present invention can also The reference subframe configuration of the target downlink subframe is determined from the set of the preset reference subframe configurations in other manners, and the invention is not particularly limited herein.
  • each target downlink subframe configuration and its reference subframe configuration (one-to-one correspondence), or multiple target downlink subframe configurations and reference fingers thereof may be established.
  • the correspondence between the frame configurations (a plurality of corresponding ones) is saved in the set of the reference subframe configuration in the manner of the mapping table.
  • the reference subframe configuration of the target downlink subframe can be directly found from the set of reference subframe configurations, and the process of selecting the determination every time is avoided. This method has proven to be effective, especially when there are many possible ways to configure the target downlink subframe, which can save a lot of computation.
  • the preset reference subframe configuration set includes seven reference subframe configurations in the time division duplex TDD system, as shown in Table 1.
  • the preset set of reference subframe configurations includes a “DUUUUUUUUU” subframe configuration in addition to the seven reference subframe configurations in the time division duplex TDD system.
  • the preset set of reference subframe configurations includes the time division duplex in Table 1.
  • Table 1 The 7 reference subframe configurations in the TDD system and the newly added "DUUUUUUUUU" subframe configuration, a total of 8 reference subframe configurations composed of reference subframe configurations, as shown in Table 3.
  • the HARQ timing relationship corresponding to the “DUUUUUUUUU” subframe configuration is that the UE continuously transmits 9 uplink subframes after receiving 4 subframes in one downlink subframe.
  • the sending unit 503 is further configured to send, by using radio resource control RRC signaling or broadcast signaling, a set of reference subframe configurations to the UE.
  • FIG. 8 is a schematic structural diagram of a user equipment UE according to an embodiment of the present invention. As shown in FIG. 8, the method includes a receiving unit 801, a determining unit 802, and a sending unit 803, where:
  • the receiving unit 801 is configured to receive a target downlink subframe that is sent by the base station on the unlicensed frequency band, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe, and the reference subframe configuration information is used to indicate the reference of the target downlink subframe. Subframe configuration.
  • the receiving unit 801 receives the target downlink subframe that is sent by the base station, and the target downlink subframe carries the downlink control information DCI, where the DCI is used to indicate the reference subframe configuration information of the target downlink subframe, and the target downlink
  • the reference subframe configuration information of the subframe is used to indicate a reference subframe configuration of the target downlink subframe.
  • the determining unit 802 is configured to determine a HARQ timing relationship corresponding to the reference subframe configuration of the target downlink subframe according to the hybrid automatic repeat request HARQ timing relationship corresponding to the set of the reference subframe configuration set in advance.
  • the target downlink subframe includes the reference subframe configuration information of the target downlink subframe, which is used to indicate the reference subframe configuration reference subframe configuration information of the target downlink subframe, and the receiving unit 801 receives the reference of the target downlink subframe.
  • the reference subframe configuration of the target downlink subframe is obtained, and the determining unit 802 may determine, according to the hybrid automatic repeat request HARQ timing relationship corresponding to the preset reference subframe configuration set, the target reference subframe configuration corresponding to the target reference subframe configuration. HARQ timing relationship. See Table 1 for a reference set of reference subframe configuration information.
  • the HARQ timing relationship includes a timing relationship between the downlink subframe and the uplink data (that is, the UE receives the downlink subframe for scheduling the uplink subframe, and after the target downlink subframe, transmits the target downlink subframe scheduling after a certain delay.
  • Uplink subframes for example, uplink scheduling grant information (English: Uplink grant, UL for short) and physical uplink shared channel (English: Physical Uplink Shared Channel, PUSCH) for uplink data transmission or retransmission Timing relationship between the timing and the timing between the HARQ downlink feedback and the uplink data retransmission on the PUSCH relationship.
  • Each of the reference subframe configuration information corresponds to a HARQ timing relationship, as shown in Table 2.
  • the UE may further receive a set of reference subframe configurations sent by the base station, for example, the receiving unit 801 may also be controlled by radio resources, in addition to being set in advance.
  • the RRC signaling or the broadcast signaling receives a set of reference subframe configurations sent by the base station.
  • the sending unit 803 is configured to perform uplink data transmission according to the corresponding HARQ timing relationship of the reference subframe configuration of the target downlink subframe.
  • the set of preset reference subframe configurations includes 7 reference subframe configurations in the time division duplex TDD system. The details are shown in Table 1. Each of the reference subframe configurations corresponds to a HARQ timing relationship, as shown in Table 2.
  • the preset set of reference subframe configurations includes a “DUUUUUUUUU” subframe configuration in addition to the seven reference subframe configurations in the time division duplex TDD system.
  • the preset reference subframe configuration set includes 7 reference subframe configurations and a newly added “DUUUUUUUU” subframe configuration in the time division duplex TDD system in Table 1, and a total of 8 reference subframes. Configure a set of reference subframe configurations, as shown in Table 3.
  • the HARQ timing relationship corresponding to the subframe configuration of the "DUUUUUUUUU" is that the UE continuously transmits 9 uplink subframes after receiving 4 subframes in one downlink subframe.
  • Table 4 The details are shown in Table 4. As can be seen from Table 4, each of the reference subframe configuration information corresponds to a HARQ timing relationship.
  • the receiving unit 801 is further configured to receive, by using radio resource control, RRC signaling or broadcast signaling, a set of reference subframe configurations sent by the base station.
  • the receiving unit 801 receives the reference subframe configuration information of the target downlink subframe sent by the base station, and the determining unit 802 determines the HARQ timing relationship according to the hybrid automatic repeat request corresponding to the set of the reference subframe configuration set in advance. Determining the HARQ timing relationship corresponding to the target reference subframe configuration, the sending unit 803 performs the uplink data transmission according to the corresponding HARQ timing relationship of the target reference subframe configuration, and performs uplink data scheduling by the base station side to ensure that the uplink data scheduling of the UE side does not occur. Chaos, thereby increasing the success rate of uplink data scheduling.
  • FIG. 9 is a schematic structural diagram of still another base station according to an embodiment of the present invention.
  • the illustrated base station includes at least one processor 901, at least one memory 902, and a network interface 903.
  • the processor 901, the memory 902, and the network interface 903 are connected by a communication bus 904.
  • the processor 901 can be a CPU, and the memory 902 is used to store an operating system. , a network communication program, a user interface program, a transmission SRS program, etc.; the network interface 903 is for receiving and transmitting data.
  • the memory 902 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the memory 902 can also optionally be at least one storage device located remotely from the aforementioned processor 901.
  • the memory 902 can be used to store instructions and data, and the memory 902 can primarily include a storage instruction area and a storage data area, wherein the storage instruction area can store an operating system, instructions required for at least one function, etc.; the instructions can cause the processor 902 to perform the following Methods, specific methods include:
  • the target downlink subframe is determined, and the target downlink subframe is a downlink subframe used by the base station for the UE to perform physical uplink shared channel PUSCH uplink scheduling.
  • the target downlink subframe includes the reference subframe configuration information of the target downlink subframe, so that the UE determines the corresponding hybrid automatic repeat request HARQ timing relationship according to the reference subframe configuration of the target downlink subframe, and
  • the uplink data transmission is performed according to the hybrid automatic repeat request HARQ timing relationship.
  • processor 902 is further configured to:
  • the LBT measurement is performed after the first listening, the LBT measurement is used to detect the busy state of the channel, the channel is the channel of the unlicensed band, and the target downlink subframe is based on the channel transmission;
  • the processor 902 transmits a target downlink subframe to the UE.
  • the processor 902 determines, according to the configuration of the target downlink subframe, the reference subframe configuration of the target downlink subframe from the set of the preset reference subframe configurations, specifically:
  • a configuration of the target downlink subframe is a subset of a downlink subframe configuration configured by at least one reference subframe in the set of reference subframe configuration information
  • the manner in which the processor 902 determines, from the at least one reference subframe configuration, a reference subframe configuration as a reference subframe configuration of the target downlink subframe is specifically:
  • the reference subframe configuration with the smallest number of downlink subframes is determined from the at least one reference subframe configuration, and the reference subframe configuration with the smallest number of downlink subframes is configured as the reference subframe configuration of the target downlink subframe.
  • the set of preset reference subframe configurations includes 7 reference subframe configurations in a time division duplex TDD system.
  • the preset set of reference subframe configurations further includes a “DUUUUUUUUU” subframe configuration.
  • the HARQ timing relationship corresponding to the “DUUUUUUUUU” subframe configuration is that the UE continuously transmits 9 uplink subframes after receiving 4 subframes in one downlink subframe.
  • the target downlink subframe includes downlink control information DCI, and the DCI is used to indicate reference subframe configuration information of the target downlink subframe.
  • processor 902 is further configured to:
  • the set of reference subframe configurations is transmitted to the UE by radio resource control RRC signaling or broadcast signaling.
  • the base station shown in FIG. 9 can perform uplink scheduling and transmission on any uplink and downlink subframe configuration information, thereby improving the success rate of uplink data scheduling.
  • FIG. 10 is a schematic structural diagram of another user equipment UE according to an embodiment of the present invention.
  • the UE shown in FIG. 10 includes at least one processor 1001, at least one memory 1002, and a network interface 1003.
  • the processor 1001, the memory 1002, and the network interface 1003 are connected by a communication bus 1004.
  • the processor 1001 may be a CPU, and the memory 1002 is configured to store An operating system, a network communication program, a user interface program, a transmission SRS program, etc.; the network interface 1003 is for receiving and transmitting data.
  • the memory 1002 may be a high speed RAM memory or a non-volatile memory such as at least one disk memory.
  • the memory 1002 can also optionally be at least one storage device located remotely from the processor 1001.
  • the memory 1002 can be used to store instructions and data, and the memory 1002 can mainly include a storage instruction area and The storage data area, wherein the storage instruction area can store an operating system, an instruction required for at least one function, and the like; the above instruction can cause the processor 1002 to perform the following method, and the specific method includes:
  • a target downlink subframe that is sent by the base station, where the target downlink subframe includes reference subframe configuration information of the target downlink subframe, and the reference subframe configuration information is used to indicate a reference subframe configuration of the target downlink subframe.
  • the uplink data transmission is performed according to the corresponding HARQ timing relationship of the reference subframe configuration of the target downlink subframe.
  • the preset reference subframe configuration set includes seven reference subframe configurations in the time division duplex TDD system.
  • the preset reference subframe configuration set further includes a “DUUUUUUUUU” subframe configuration.
  • the HARQ timing relationship corresponding to the subframe configuration of the "DUUUUUUUUU" is that the UE continuously transmits 9 uplink subframes after receiving 4 subframes in one downlink subframe.
  • the target downlink subframe carries downlink control information DCI, and the DCI is used to indicate reference subframe configuration information of the target downlink subframe.
  • processor 1002 is further configured to:
  • the set of reference subframe configurations sent by the base station is received by radio resource control RRC signaling or broadcast signaling.
  • the success rate of uplink data scheduling can be improved.
  • modules or sub-modules in all the embodiments of the present invention may be implemented by a general-purpose integrated circuit, such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit).
  • a general-purpose integrated circuit such as a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit).
  • the units in the apparatus of the embodiment of the present invention may be combined, divided, and deleted according to actual needs.
  • the machine can be read into a storage medium, and when executed, the program can include the flow of an embodiment of the methods as described above.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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

Abstract

Les modes de réalisation de l'invention portent sur un procédé de planification de données de liaison montante, sur un équipement utilisateur et sur une station de base. Le procédé consiste : lorsqu'une station de base transmet, dans une bande de fréquence sans licence et à un équipement utilisateur (UE), une sous-trame de liaison descendante, à déterminer une sous-trame de liaison descendante cible, la sous-trame de liaison descendante cible étant une sous-trame de liaison descendante utilisée pour effectuer une allocation de liaison montante PUSCH planifiée par la station de base et par rapport à l'UE ; à déterminer, selon une configuration de la sous-trame de liaison descendante cible, et à partir d'un ensemble de configuration de sous-trame de référence préconfiguré, une configuration de sous-trame de référence de la sous-trame de liaison descendante cible ; à transmettre, à l'UE, la sous-trame de liaison descendante cible comprenant des informations de la configuration de sous-trame de référence de la sous-trame de liaison descendante cible, pour permettre à l'UE de configurer, selon la sous-trame de référence cible, une relation de synchronisation de la transmission de répétition automatique hybride (HARQ) correspondante pour effectuer une transmission de données de liaison montante. L'invention est utilisée pour augmenter le taux de réussite de la planification de données de liaison montante.
PCT/CN2017/090568 2016-07-08 2017-06-28 Procédé de planification de données de liaison montante, équipement utilisateur, et station de base WO2018006742A1 (fr)

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