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WO2015046787A1 - Procédé de gestion de priorité de canal logique et appareil associé - Google Patents

Procédé de gestion de priorité de canal logique et appareil associé Download PDF

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Publication number
WO2015046787A1
WO2015046787A1 PCT/KR2014/008500 KR2014008500W WO2015046787A1 WO 2015046787 A1 WO2015046787 A1 WO 2015046787A1 KR 2014008500 W KR2014008500 W KR 2014008500W WO 2015046787 A1 WO2015046787 A1 WO 2015046787A1
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WO
WIPO (PCT)
Prior art keywords
base station
logical channel
terminal
cell group
information
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Ceased
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PCT/KR2014/008500
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English (en)
Korean (ko)
Inventor
홍성표
최우진
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KT Corp
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KT Corp
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Publication date
Priority claimed from KR20140021976A external-priority patent/KR20150034586A/ko
Application filed by KT Corp filed Critical KT Corp
Publication of WO2015046787A1 publication Critical patent/WO2015046787A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/15—Setup of multiple wireless link connections
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers

Definitions

  • the present invention relates to a method and apparatus for processing logical channel priorities for uplink data of a terminal in a terminal transmitting user data using one or more base stations in a small cell environment.
  • LTE Long Term Evolution
  • LTE-Advanced of the 3GPP series require high-speed large-capacity communication systems capable of transmitting and receiving various data such as video and wireless data, beyond voice-oriented services.
  • the present invention is to propose a method and apparatus for a terminal to merge and transmit radio resources through different base stations.
  • the present invention also proposes a method and apparatus for effectively allocating and processing logical channel priority resources even when different base stations are configured to transmit data by merging radio resources through separate schedulers for one radio bearer. .
  • the present invention provides a method for a UE to perform a logical channel priority procedure in a MAC layer, the method comprising: receiving higher layer signaling constituting a dual connection with a first base station and a second base station and a logical channel
  • the method includes identifying a base station or a cell group mapped to each of the at least one logical channel based on the configuration information, and performing a logical channel priority procedure for each base station or cell group separated in the MAC layer.
  • the present invention also provides a method for controlling a logical channel priority procedure of a terminal by a first base station, the method comprising: generating higher layer signaling for a dual connectivity configuration of a terminal and a base station to which a terminal is mapped to each of at least one logical channel. Or transmitting upper layer signaling including logical channel configuration information for distinguishing cell groups, and receiving uplink data allocated by a terminal by performing a logical channel priority procedure for each base station or cell group separated in a MAC layer It provides a method comprising the steps of.
  • the present invention provides a terminal for performing a logical channel priority procedure, at least one logical channel based on the receiver and logical channel configuration information for receiving a higher layer signaling constituting a dual connection with the first base station and the second base station
  • a terminal apparatus including a control unit for classifying a base station or a cell group mapped to each and performing a logical channel priority procedure for each divided base station or cell group.
  • the present invention provides a first base station for controlling a logical channel priority procedure of the terminal, the base station or cell to which the control unit for generating a higher layer signaling for the dual connectivity configuration of the terminal and the terminal is mapped to each of at least one logical channel Transmitter for transmitting higher layer signaling including logical channel configuration information for distinguishing groups and a receiver for receiving uplink data allocated by UE by performing logical channel priority procedure for each base station or cell group separated in MAC layer It provides a base station apparatus comprising a.
  • the terminal provides a method and apparatus for merging and transmitting radio resources through different base stations.
  • the logical channel priority for the uplink radio resources received from the plurality of base stations can be effectively processed by effectively allocating resources for each logical channel.
  • FIG. 1 is a diagram illustrating an example of a MAC configuration diagram of a conventional terminal.
  • FIG. 2 is a diagram illustrating an example of a bearer split user plane structure.
  • FIG. 3 illustrates another example of a bearer split user plane structure.
  • FIG. 4 is a diagram illustrating an example of a network configuration to which the present invention can be applied.
  • FIG. 5 is a diagram illustrating another example of a network configuration to which the present invention can be applied.
  • FIG. 6 is a diagram illustrating another example of a network configuration to which the present invention can be applied.
  • FIG. 7 is a diagram illustrating an example of logical channel configuration information including base station / cell group classification information.
  • FIG. 8 illustrates another example of logical channel configuration information including base station / cell group classification information.
  • FIG. 9 is a diagram illustrating an example of logical channel configuration information including base station / cell group classification information and base station-specific PBR.
  • FIG. 10 is a diagram illustrating another example of logical channel configuration information including base station / cell group classification information and base station-specific PBR.
  • FIG. 11 is a diagram illustrating another example of logical channel configuration information including base station / cell group classification information and base station-specific PBR.
  • FIG. 12 illustrates another example of logical channel configuration information including base station / cell group classification information and base station-specific PBR.
  • FIG. 13 is a diagram illustrating another example of logical channel configuration information including base station / cell group classification information and base station-specific PBR.
  • FIG. 14 illustrates another example of logical channel configuration information including base station / cell group classification information and base station-specific PBR.
  • 15 is a signal diagram illustrating operations of a terminal and a base station according to an embodiment of the present invention.
  • 16 is a diagram illustrating an operation of a terminal according to another embodiment of the present invention.
  • 17 is a diagram illustrating an operation of a first base station according to another embodiment of the present invention.
  • FIG. 18 is a view showing the configuration of a user terminal according to another embodiment of the present invention.
  • FIG. 19 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.
  • the wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data, and the like.
  • the wireless communication system includes a user equipment (UE) and a base station (base station, BS, or eNB).
  • a user terminal is a generic concept meaning a terminal in wireless communication.
  • user equipment (UE) in WCDMA, LTE, and HSPA, as well as mobile station (MS) in GSM, user terminal (UT), and SS It should be interpreted as a concept that includes a subscriber station, a wireless device, and the like.
  • a base station or a cell generally refers to a station that communicates with a user terminal, and includes a Node-B, an evolved Node-B, an Sector, a Site, and a BTS.
  • Other terms such as a base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell may be called.
  • RRH remote radio head
  • RU radio unit
  • a base station or a cell is a generic meaning indicating some areas or functions covered by a base station controller (BSC) in CDMA, a Node-B in WCDMA, an eNB or a sector (site) in LTE, and the like. It should be interpreted as, and it is meant to cover all the various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, small cell communication range.
  • BSC base station controller
  • the base station may be interpreted in two senses. i) the device providing the megacell, the macrocell, the microcell, the picocell, the femtocell, the small cell in relation to the wireless area, or ii) the wireless area itself. In i) all devices which provide a given wireless area are controlled by the same entity or interact with each other to cooperatively configure the wireless area to direct the base station.
  • the base station may indicate the radio area itself to receive or transmit a signal from a viewpoint of a user terminal or a neighboring base station.
  • megacells macrocells, microcells, picocells, femtocells, small cells, RRHs, antennas, RUs, low power nodes (LPNs), points, eNBs, transmit / receive points, transmit points, and receive points are collectively referred to as base stations. do.
  • the user terminal and the base station are two transmitting and receiving entities used to implement the technology or technical idea described in this specification in a comprehensive sense and are not limited by the terms or words specifically referred to.
  • the user terminal and the base station are two types of uplink or downlink transmitting / receiving subjects used to implement the technology or the technical idea described in the present invention, and are used in a generic sense and are not limited by the terms or words specifically referred to.
  • the uplink (Uplink, UL, or uplink) refers to a method for transmitting and receiving data to the base station by the user terminal
  • the downlink (Downlink, DL, or downlink) means to transmit and receive data to the user terminal by the base station It means the way.
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • OFDM-FDMA OFDM-TDMA
  • OFDM-CDMA OFDM-CDMA
  • One embodiment of the present invention can be applied to resource allocation in the fields of asynchronous wireless communication evolving to LTE and LTE-Advanced through GSM, WCDMA, HSPA, and synchronous wireless communication evolving to CDMA, CDMA-2000 and UMB.
  • the present invention should not be construed as being limited or limited to a specific wireless communication field, but should be construed as including all technical fields to which the spirit of the present invention can be applied.
  • the uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, or may use a frequency division duplex (FDD) scheme that is transmitted using different frequencies.
  • TDD time division duplex
  • FDD frequency division duplex
  • a standard is configured by configuring uplink and downlink based on one carrier or a pair of carriers.
  • the uplink and the downlink include a Physical Downlink Control CHannel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel (PHICH), a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control CHannel (EPDCCH), and the like.
  • Control information is transmitted through the same control channel, and data is configured by a data channel such as a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH).
  • PDSCH physical downlink shared channel
  • PUSCH physical uplink shared channel
  • control information may also be transmitted using an enhanced PDCCH (EPDCCH or extended PDCCH).
  • EPDCCH enhanced PDCCH
  • extended PDCCH extended PDCCH
  • a cell means a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and the transmission / reception point itself. Can be.
  • a wireless communication system to which embodiments are applied may be a coordinated multi-point transmission / reception system (CoMP system) or a coordinated multi-antenna transmission scheme in which two or more transmission / reception points cooperate to transmit a signal.
  • antenna transmission system a cooperative multi-cell communication system.
  • the CoMP system may include at least two multiple transmission / reception points and terminals.
  • the multiple transmit / receive point is at least one having a base station or a macro cell (hereinafter referred to as an eNB) and a high transmission power or a low transmission power in a macro cell region, which is wired controlled by an optical cable or an optical fiber to the eNB. May be RRH.
  • an eNB a base station or a macro cell
  • a high transmission power or a low transmission power in a macro cell region which is wired controlled by an optical cable or an optical fiber to the eNB. May be RRH.
  • downlink refers to a communication or communication path from a multiple transmission / reception point to a terminal
  • uplink refers to a communication or communication path from a terminal to multiple transmission / reception points.
  • a transmitter may be part of multiple transmission / reception points, and a receiver may be part of a terminal.
  • a transmitter may be part of a terminal, and a receiver may be part of multiple transmission / reception points.
  • a situation in which a signal is transmitted and received through a channel such as a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH may be expressed in the form of 'sending and receiving a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH.
  • a description of transmitting or receiving a PDCCH or transmitting or receiving a signal through the PDCCH may be used as a meaning including transmitting or receiving an EPDCCH or transmitting or receiving a signal through the EPDCCH.
  • the physical downlink control channel described below may mean PDCCH or EPDCCH, and may also be used to include both PDCCH and EPDCCH.
  • the EPDCCH which is an embodiment of the present invention, may be applied to the portion described as the PDCCH, and the EPDCCH may be applied to the portion described as the EPDCCH as an embodiment of the present invention.
  • high layer signaling described below includes RRC signaling for transmitting RRC information including an RRC parameter.
  • the eNB performs downlink transmission to the terminals.
  • the eNB includes downlink control information and an uplink data channel (eg, a physical downlink shared channel (PDSCH), which is a primary physical channel for unicast transmission, and scheduling required to receive the PDSCH.
  • a physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission on a physical uplink shared channel (PUSCH) may be transmitted.
  • PUSCH physical uplink shared channel
  • the low power node refers to a node using low transmit power (Tx) compared to a general macro node.
  • CA Carrier Aggregation
  • the macro cell and the RRH cell are constructed to be scheduled under the control of one base station.
  • an ideal backhaul is required between the macro cell node and the RRH.
  • An ideal backhaul means a backhaul that exhibits very high throughput and very low latency, such as optical fiber, dedicated point-to-point connections using LOS microwaves (Line Of Sight microwave).
  • non-ideal backhaul backhaul that exhibits relatively low throughput and large delay, such as digital subscriber line (xDSL) and Non LOS microwaves.
  • the plurality of serving cells may be merged through the single base station-based CA technology described above to provide a service to the terminal. That is, a plurality of serving cells may be configured for a terminal in a Radio Resource Control (RRC) connected state, and when an ideal backhaul is established between the macro cell node and the RRH, the macro cell And the RRH cell may be configured with serving cells to provide a service to the terminal.
  • RRC Radio Resource Control
  • the terminal may have only one RRC connection with the network.
  • one serving cell is a Non-Access Stratum (hereinafter referred to as 'NAS') mobility information (e.g., TAI: Tracking Area Identity) and one serving cell provides security input in RRC connection reset / handover.
  • 'NAS' Non-Access Stratum
  • TAI Tracking Area Identity
  • SCells Secondary Cells
  • SCells may be configured as a serving cell together with a PCell.
  • DL / UL PCC Downlink / Uplink Primary Component Carrier
  • DL / UL SCC Downlink / Uplink Secondary Component Carrier
  • MAC Medium Access Control
  • RLC / PDCP do not affect the RLC / PDCP layer before carrier aggregation is introduced. That is, the CA operation cannot be distinguished in the RLC / PDCP layer.
  • FIG. 1 is a diagram illustrating an example of a MAC configuration diagram of a conventional terminal.
  • the MAC layer may perform various functions. For example, the MAC layer may perform mapping between logical channels and transport channels. In addition, the MAC layer may perform a function of multiplexing MAC Service Data Units (SDUs) into transport blocks (TBs) transmitted from one or different logical channels to transport channels of the physical layer. . In addition, the MAC layer may perform a function of de-multiplexing MAC Service Data Units (SDUs) from transport blocks (TBs) transmitted on physical layer transport channels from one or different logical channels. do. In addition, a function such as logical channel prioritization and error correction through a hybrid automatic repeat request (HARQ) may be performed. In addition, the MAC layer provides a data transfer service for logical channels. Each logical channel type may be defined according to what type of information is transmitted.
  • HARQ hybrid automatic repeat request
  • 2 and 3 illustrate each example of a bearer split user plane structure.
  • radio resources of a plurality of base stations may be merged and used for bearer transmission.
  • each base station needs to have an independent scheduler.
  • RLC entity and MAC entity may be configured in each of the first base station and the second base station.
  • a first base station has one PDCP entity, an RLC entity, and a MAC entity for a specific radio bearer in a bearer separation structure in which one radio bearer is divided into a second base station.
  • the second base station may have an RLC entity and a MAC entity for the radio bearer.
  • a bearer may have a first base station separated from an RLC entity.
  • the first base station may have one PDCP entity, RLC entity, and MAC entity for a specific radio bearer.
  • the second base station may have one MAC entity separately from the first base station in the bearer configured by bearer separation for the radio bearer. As another example, it may further have an RLC entity.
  • the Logical Channel Prioritization (LCP) procedure configures a MAC PDU by determining the amount of data from each logical channel and MAC control element type that should be included in the MAC Protocol Data Unit (MAC PDU). It is described in Section 5.4.3.1 of the 3GPP TS36.321 MAC Protocol document.
  • the RRC controls the scheduling of uplink data by signaling for each logical channel.
  • Signaling configuration information for controlling logical channel scheduling on an RRC message includes a priority, a priority bit rate (PBR), and a bucket size duration (BSD).
  • PBR priority bit rate
  • BSD bucket size duration
  • the terminal maintains a variable Bj for each logical channel.
  • Bj is initialized to zero when the associated logical channel is set.
  • TTI transmission time interval
  • PBR represents a priority bit rate of logical channel j.
  • Bj cannot exceed the bucket size.
  • the bucket size of the logical channel is equal to PBR ⁇ BSD.
  • the terminal may perform the following logical channel priority procedure when a new transmission is performed.
  • the terminal allocates resources to logical channels in the following steps.
  • Step 1) Allocate resources in decreasing priority order to all logical channels with Bj> 0.
  • Step 2 The UE reduces Bj to the total size of MAC SDUs serviced in the logical channel of Step 1.
  • Step 3 If any resources remain, all logical channels are serviced regardless of the Bj value in strict decreasing priority order until the data or uplink grant (UL grant) for the logical channel is exhausted.
  • a specific radio bearer terminates the S1-U interface at the first base station and is configured to process through the first base station and the second base station by using a bearer split user plane structure. If necessary, a scheduler is needed at a plurality of base stations for one radio bearer transmission. In this case, a problem may occur because the above-described configuration information (for example, priority, PBR, BSD) for the existing logical channel priority procedure sets the same priority processing (ratio) for each logical channel between the terminal and the network. Can be. For example, as shown in FIG. 2 or FIG.
  • a specific radio bearer may be configured to process only through a first base station, and for another bearer, a first plane may be configured by using a bearer split user plane structure at the first base station.
  • the terminal could not use the conventional logical channel priority procedure for allocating resources for each logical channel for uplink radio resources allocated from a plurality of base stations.
  • the uplink resources for a specific base station are allocated according to the priority bitrate, or for each specific radio bearer, priority is given to each of the uplink resources for each base station.
  • priority bitrate By assigning the priority bitrate, a problem may occur in which the priority bitrate is doubled so that resources are allocated differently from the priority processing rate expected at the time of setting.
  • data may be transmitted by merging radio resources through a plurality of base stations.
  • this requires a separate scheduler for each base station for one radio bearer transmission.
  • the terminal when the terminal is configured to process a specific radio bearer only through one base station, and another radio bearer is configured to process through a plurality of base stations, the terminal prioritizes logical channel priority for uplink radio resources received from the plurality of base stations. In consideration of the rank ratio, there was a problem in that resources could not be effectively allocated to logical channels.
  • the present invention devised to solve the above-mentioned problem is an uplink radio in which a terminal is received from a plurality of base stations even when different base stations are configured to transmit data by merging radio resources through a separate scheduler for at least one radio bearer.
  • An object of the present invention is to provide a method for effectively allocating logical channel priority resources in consideration of resource scheduling information and priority bitrate for each radio bearer configured in a terminal.
  • the terminal when the terminal configures dual connectivity according to the network configuration scenario of the present invention, the terminal forms an RRC connection with the terminal and terminates the base station or S1-MME providing a PCell, which is a reference for handover.
  • the base station serving as a mobility anchor for the core network is described as a master base station or a first base station.
  • the master base station or the first base station may be a base station providing a macro cell according to a scenario described below, or may be a base station providing any one small cell in a dual connectivity situation between the small cells.
  • a base station that is distinguished from a master base station in a dual connectivity environment and provides additional radio resources to a terminal is described as a secondary base station or a second base station.
  • the first base station (master base station) and the second base station (secondary base station) may provide at least one cell to the terminal, respectively, and the first base station and the second base station may be connected through an interface between the first base station and the second base station. have.
  • a cell associated with the first base station may be referred to as a macro cell
  • a cell associated with the second base station may be referred to as a small cell for clarity.
  • a cell associated with the first base station may also be described as a small cell
  • a cell associated with the second base station may also be described as a macro cell.
  • the macro cell in the present invention may mean each of at least one or more cells, and may be described as a generic term for all cells associated with the first base station.
  • the small cell may also mean each of at least one or more cells, and may also be described as a generic term for all cells associated with the second base station.
  • the cell may be a cell associated with the first base station.
  • the cell of the second base station may be described as another small cell or another small cell.
  • the terminal may perform communication through the plurality of cells associated with the first base station and the plurality of cells associated with the second base station, and in this case, the PCell function of the plurality of cells associated with the first base station is performed.
  • the specific cell may be described as the first base station PCell.
  • a specific cell among a plurality of cells associated with the second base station may be described as the second base station PCell (or PSCell).
  • the second base station PCell (or PSCell) refers to a cell that performs all or part of the functions of the aforementioned PCell among the cells associated with the second base station.
  • the second base station PCell (or PSCell) may perform a PUCCH transmission / reception function.
  • the cell associated with the first base station or the serving cell associated with the first base station is referred to as a master cell group, and the cell associated with the second base station or the serving cell associated with the second base station is referred to as a secondary cell group. can do.
  • the cell group is used as a concept for distinguishing a base station from the terminal point of view.
  • FIG. 4 is a diagram illustrating an example of a network configuration to which the present invention can be applied.
  • the macro cell 402 and the small cells 401 have the same carrier frequency F1 and have a non-ideal backhaul between the first base station 410 and the second base station 432, 434, 436. It is connected via a non-ideal backhaul. Small cells may be built overlaying within macro cell coverage. Outdoor small cell environments and small cell clusters are considered.
  • FIG. 5 is a diagram illustrating another example of a network configuration to which the present invention can be applied.
  • the macro cell 502 and the small cells 501 have different carrier frequencies F1 and F2, and have a first base station 510 and a second base station 532, 534, and 536.
  • the liver is connected through a non-ideal backhaul.
  • Small cells may be built overlaying within macro cell coverage. An outdoor small cell environment or an indoor small cell environment and a small cell cluster are considered.
  • FIG. 6 is a diagram illustrating another example of a network configuration to which the present invention can be applied.
  • FIG. 6 there are only small cells with one or more carrier frequencies F1 or F2, and non-ideal backhaul between base stations 610, 612, and 614 providing the small cell. Is connected through. Indoor small cell environments and small cell clusters are considered.
  • the terminal may perform dual communication with the macro cell and the small cell.
  • the terminal may be dually connected to a plurality of small cells to perform communication.
  • the second base stations may each operate as stand-alone base stations. That is, the terminal may establish one RRC connection with the second base station and control one or more Signaling Radio Bearers (SRBs) for control plane data transmission.
  • SRBs Signaling Radio Bearers
  • the UE may have a second base station and one or more DRBs (Data Radio Bearers) for user plane data transmission.
  • DRBs Data Radio Bearers
  • the UE may transmit user plane data through one or more second base stations (or through cooperation between the first base station and one or more second base stations) under the control of the first base station. .
  • the terminal establishes one RRC connection with the first base station of FIG. 4 or 5 or the first base station (small cell base station) of FIG. 6 for control plane data transmission.
  • Signaling Radio Bearers may be set to be transmitted through a first base station or a first base station and a second base station.
  • the UE may configure one or more Data Radio Bearers (DRBs) through the first base station of FIG. 4 or 5 or the first base station (small cell base station) of FIG. 6 for user plane data transmission.
  • DRBs Data Radio Bearers
  • the UE may configure one or more DRBs through the first base station and the second base station for user plane data transmission.
  • the UE may configure radio bearers as shown in Table 1 below.
  • the UE may transmit user plane data through one or more second base stations (or through cooperation between the first base station and one or more second base stations) under the control of the first base station. . That is, the terminal establishes one RRC connection with the small cell base station serving as the first base station of FIG. 4 or 5 or the first base station of FIG. 6 for control plane data transmission. More signaling radio bearers (SRBs) may be set to be transmitted through the first base station or the first base station and the second base station. In addition, the UE may configure one or more Data Radio Bearers (DRBs) through the small cell base station serving as the first base station of FIG. 4 or 5 or the first base station of FIG. 6 for user plane data transmission.
  • DRBs Data Radio Bearers
  • the UE may configure one or more DRBs through the first base station and the second base station for user plane data transmission.
  • the UE may configure one or more Data Radio Bearers (DRBs) through a second base station (small cell base station) for user plane data transmission.
  • DRBs Data Radio Bearers
  • the terminal may configure radio bearers as shown in Table 2 above.
  • an uplink grant (or uplink available resource) through the master base station (MeNB) is 400 and an uplink grant (or uplink available resource) through the secondary base station (SeNB) is 500.
  • an uplink grant (or uplink available resource) through the master base station (MeNB) is assigned to PBR ⁇ TTI in radio bearer 1 having a high priority. 100 resources corresponding to PBR ⁇ TTI are sequentially allocated to the corresponding 300 and radio bearer 2 which is the next priority.
  • the uplink grant (or uplink available resources) through the secondary base station (SeNB) is 300 corresponding to PBR ⁇ TTI for radio bearer 1 with high priority, 150 corresponding to PBR ⁇ TTI for radio bearer 3 with low priority, Since radio resources remain, 50 resources remaining are sequentially allocated to radio bearer 1 having a higher priority.
  • the configuration information for logical channel scheduling on the RRC message includes only one priority, a priority bit rate (PBR), and a bucket size duration (BSD)
  • PBR priority bit rate
  • BSD bucket size duration
  • the master base station And radio bearer 1 which is a radio bearer configured through both the secondary base stations, can be repeatedly allocated a radio resource corresponding to the priority bit rate by both an uplink grant through the master base station and an uplink grant through the secondary base station. have.
  • the terminal receives uplink radio resource scheduling information and a plurality of base stations.
  • a terminal according to an embodiment of the present invention can efficiently perform a logical channel priority procedure using the following method.
  • First embodiment A method of processing considering uplink grants (uplink available resources) of base stations received in one TTI .
  • the RRC controls the scheduling of uplink data by signaling for each logical channel.
  • the RRC message may include signaling configuration information for controlling logical channel scheduling.
  • the logical channel configuration information on the RRC message may include at least one or more of priority, priority bitrate (PBR), and bucket size duration (BSD).
  • PBR priority bitrate
  • BSD bucket size duration
  • the RRC message may include additional configuration information for controlling logical channel scheduling in the radio bearer configuration information.
  • additional configuration information for controlling logical channel scheduling in the radio bearer configuration information.
  • logical channels to be transmitted through a base station / base station cell group to transmit traffic of the corresponding radio bearer or a specific base station / base station cell group are distinguished.
  • base station / cell group classification information or cell index or base station / cell group classification information list or cell index list
  • k for which a logical channel is configured may be included.
  • k ⁇ M
  • FIG. 7 is a diagram illustrating an example of logical channel configuration information including the base station / cell group classification information described above.
  • eNB / CellGroupIndication MCG
  • FIG. 8 is a diagram illustrating another example of logical channel configuration information including the base station / cell group classification information described above.
  • the UE may distinguish whether there are two base station / cell groups to perform logical channel processing by including two base station logical channel configuration information elements in the radio bearer configuration information as shown in FIG. 8 for a radio bearer configured through two base stations.
  • a base station / cell group for performing logical channel processing may be distinguished by including a logical channel configuration information element for each base station in the radio bearer configuration information.
  • the distinguishing display for the above-described base station / cell group classification information is only an example, and is not limited thereto. That is, it may be configured according to various methods capable of distinguishing at least one base station / cell group that services data transmission belonging to a logical channel.
  • a terminal may perform a priority procedure in consideration of at least one or more uplink grants (or uplink available resources) received in one TTI from all base stations processing all configured radio bearers.
  • the terminal maintains base station / cell group classification information (or cell index or base station index list or cell index list) k configured with variable Bj for each logical channel in the MAC layer.
  • Bj is initialized to zero when the associated logical channel is set.
  • Each transmission time interval (TTI) is increased by PBR ⁇ TTI duration.
  • PBR represents a priority bit rate of logical channel j.
  • Bj can't exceed the bucket size.
  • the Bj value is larger than the bucket size of logical channel j, it is set to the bucket size.
  • the bucket size of the logical channel is equal to PBR ⁇ BSD.
  • the terminal When a new uplink data transmission is performed, the terminal performs the following priority procedure.
  • Step 1) Bj in one or more logical channels configured to transmit data through the corresponding base station / cell group for each base station / cell group for base station / cell groups serving data transmission belonging to logical channels configured in the terminal Allocate resources in decreasing priority order to all logical channels> 0.
  • high priority data may be transmitted through specific base stations according to radio quality between a terminal and a base station for logical channels of radio bearers separated by bearers and configured through a plurality of base stations. For example, through a base station having a large uplink grant (or an average of uplink grants during a TTI multiple or an uplink available resource or a mean of uplink available resources during a TTI multiple) to the TTI (or RRM measurement information or the like). Based on the base station having better radio quality between the terminal and the base station, the resource may be allocated by first reducing Bj to an uplink grant resource (or uplink available resource) to be transmitted.
  • the uplink available resources may include allocation resources according to semi-persistent scheduling in addition to uplink grants for dynamic scheduling.
  • Bj is divided by the number of base stations constituting the logical channel than the uplink grant resource (or uplink available resource) to be transmitted between the terminal and the base station with better radio quality, and the uplink grant resource to be transmitted through other base stations ( Alternatively, when uplink available resources are left, resources may be allocated to an uplink grant (or uplink available resources) to be transmitted through another base station. If the value obtained by dividing Bj by the number of base stations constituting the logical channel is a decimal number, a value obtained by converting it into an integer may be used.
  • data may be distributed and transmitted for each base station for logical channels of radio bearers configured through a plurality of base stations.
  • a resource may be allocated by reducing Bj to a value obtained by dividing Bj by the number of base stations constituting a logical channel to an uplink grant resource (or uplink available resource) to be transmitted through each base station for each base station. If the Bj is divided by the number of base stations constituting the logical channel than the uplink grant resources to be transmitted through one base station, and other resources are left in the uplink grant (or uplink available resources) to be transmitted through another base station.
  • a resource may be allocated to an uplink grant (or uplink available resource) to be transmitted through. If the value obtained by dividing Bj by the number of base stations constituting the logical channel is a decimal number, a value obtained by converting it into an integer may be used.
  • an uplink grant (or an average of uplink grants for multiple TTIs or an uplink available resource or TTI to the corresponding TTI) is received for the corresponding TTI received for each base station.
  • Data can be distributed and transmitted for each base station in proportion to the uplink available resource average value during the multiplication. For example, by reducing the Bj in the uplink grant resource (or uplink available resource) to be transmitted through each base station for each base station, the uplink grant (or uplink during the TTI multiple) to the corresponding TTI received for each base station.
  • the resource may be allocated up to a grant average value or a value calculated in proportion to the uplink available resource or the average value of the uplink available resource during multiples of the TTI (if a fraction is converted to an integer). For example, when the MeNB uplink grant is a and the SeNB uplink grant is b, the resource may be allocated by reducing Bj by a / (a + b) ⁇ Bj. If an uplink grant (or an uplink grant during TTI multiples) is added to a corresponding TTI received for each base station, the Bj is higher than the uplink grant resource (or uplink available resource) to be transmitted through one base station.
  • the value calculated in proportion to the available resource or the average of the uplink available resources during the TTI multiple is large, and an uplink grant to be transmitted through another base station when resources remain in an uplink grant (or uplink available resource) to be transmitted through another base station. (Or uplink available resources) can be allocated.
  • data may be distributed and transmitted for each base station as a function of data available for transmission to be transmitted for each base station for logical channels of radio bearers configured through a plurality of base stations. You can do that.
  • each base station is proportional to or inversely proportional to the amount of available data transmitted (or delivered) through the BSR for each base station to an uplink grant resource (or uplink available resource) to be transmitted through each base station.
  • the resource can be allocated by reducing Bj to the calculated value (if it is a prime number, converted to an integer).
  • the resource may be allocated up to a / (a + b) ⁇ Bj when Bj is calculated in proportion thereto.
  • resources up to b / (a + b) ⁇ Bj may be allocated. If an uplink grant (or an uplink grant during TTI multiples) is added to a corresponding TTI received for each base station, the Bj is higher than the uplink grant resource (or uplink available resource) to be transmitted through one base station.
  • Resources may be allocated to link grants (or uplink available resources).
  • the logical channels of radio bearers configured through a plurality of base stations are distributed and transmitted as a function based on a ratio calculated based on radio quality status or RRM measurement information between the terminal and each base station. It can be done.
  • Bj is calculated in proportion to or inversely proportional to radio quality status or RRM measurement information between respective base stations for each base station to an uplink grant resource (or uplink available resource) to be transmitted through each base station for each base station.
  • a resource can be allocated by reducing Bj to one value (if it is a prime number, converted to an integer).
  • the Bj value is calculated in proportion to or inversely proportional to the radio quality state or RRM measurement information between the respective base stations,
  • resources may be allocated to an uplink grant (or uplink available resource) to be transmitted through another base station.
  • logical channels of radio bearers configured through a plurality of base stations may be distributed and transmitted for each base station in proportion to a Bj value individually allocated to each base station.
  • resources may be allocated up to a value calculated in proportion to the ratio of Bj sum of logical channels individually allocated to each base station or a value calculated in inverse proportion (if a decimal number is converted to an integer).
  • a value calculated proportionally may be calculated as a / (a + b) ⁇ Bj.
  • the value calculated in inverse proportion may be calculated as b / (a + b) ⁇ Bj.
  • the terminal may allocate resources by reducing Bj to the calculated value. If the base station is larger than the uplink grant resource (or uplink available resource) to be transmitted through one base station, the calculated value is proportional to or proportionally proportional to the Bj sum of the logical channels allocated to each base station. If resources remain in an uplink grant (or uplink available resource) to be transmitted through, the resource may be allocated to an uplink grant (or uplink available resource) to be transmitted through another base station.
  • priority bits processing for uplink data transmission may be assigned to logical channels of radio bearers configured through a plurality of base stations to allocate resources for Bj to the aforementioned base station / cell group. You can do that.
  • the master base station constituting the RRC connection (or the master base station confirmed by the secondary base station) the logic of the RRC message to the terminal in consideration of the base station load information and / or radio quality information between the terminal and the base station, etc.
  • Priority bit processing for uplink data transmission may include channel configuration information preferred base station index / division information (or cell index).
  • the master base station (or master base station or secondary base station and secondary base station confirmed by the secondary base station) configuring the RRC connection is MAC to the terminal in consideration of the base station load information and / or radio quality information between the terminal and the base station.
  • a priority bit processing preferred base station index (or cell index) setting for uplink data transmission may be set through a MAC control element.
  • the terminal receives the RRC message including the priority bit processing preferred base station index / cell group identification information for uplink data transmission, the uplink data of the corresponding data radio bearer is mapped to the corresponding base station / cell group and uplinked. Allocate resources for data transfer.
  • the terminal when the terminal includes preferred base station / cell group identification information for uplink data transmission in configuration information of a radio bearer configured through a plurality of base stations, the terminal may transmit information on uplink data of the corresponding data radio bearer to the corresponding base station. Mapping may allocate resources for uplink data transmission.
  • a priority bit processing rule set may be configured in a terminal or a master base station (or a master base station confirmed by a secondary base station) configuring an RRC connection.
  • Priority bit processing rule set information may be configured in the terminal through signaling by the terminal to allocate resources for Bj to the specific base station described above.
  • the master base station (or the master base station confirmed by the secondary base station) configuring the RRC connection may activate a function of allocating resources for Bj to the terminal through the priority bit processing rule set.
  • the logical channel of a radio bearer having the highest priority (which has the lowest priority value as the highest priority bearer) configured in the terminal is the logical channel of the radio bearer which processes data only through the master base station and the subpriority (or Lower priority) Bj for the logical channel of the subpriority (or lower priority) radio bearer is preferred to the secondary base station when the logical channel of the radio bearer is a radio bearer processed by bearer separation through the master base station and the secondary base station.
  • the secondary base station to which Bj is allocated may be a base station other than the master base station, or a base station other than a base station processing a radio bearer having the highest priority value among radio bearers configured only with one base station.
  • radio bearers consisting of only one base station may allocate and allocate resources for Bj in proportion to or inversely proportional to the ratio obtained by weighting the PBR for each base station.
  • the base station that processes the radio bearers having the highest priority among the radio bearers configured with only one base station is not.
  • a base station can be selected to allocate resources for Bj.
  • a radio bearer having the highest priority among radio bearers configured with only one base station among logical channels of radio bearers lower than logical channel priorities of radio bearers configured through a plurality of base stations may be selected.
  • a base station other than the base station to process may be selected to allocate resources for Bj.
  • the above-described examples may be used in combination in a rule set.
  • the master base station (or the master base station confirmed by the secondary base station) configuring the RRC connection may process the priority bits in the MAC-MainConfig information or the logical channel configuration information of the RRC message transmitted to the terminal. It may include identification information (or cell index).
  • the master base station (or the master base station or the master base station and the secondary base station confirmed by the secondary base station) configuring the RRC connection may use the priority bit processing preferred base station / cell group classification information (MAC control element). Alternatively, one or more pieces of information of a cell index) setting, a rule set, and a processing method may be set.
  • the master base station may configure at least one of information for identifying a resource allocation method of each of the above-described embodiments, a distribution ratio and a period for calculating a distribution ratio when a distribution ratio is required among the above-described resource allocation methods. Can be. This may be transmitted in the MAC-MainConfig information or logical channel configuration of the RRC message or may be delivered by defining a new MAC control element.
  • Step 2 The UE reduces Bj to the total size of MAC SDUs serviced in the logical channel of Step 1.
  • Step 3 If any resource remains, all logical channels configured to transmit data through the corresponding base station / cell group for each base station relate to the Bj value until the data or uplink grant for the logical channel is exhausted. Service in strict decreasing priority order
  • signaling configuration information for example, priority bitrate (PBR) and bucket size duration
  • PBR priority bitrate
  • bucket size duration for controlling conventional logical channel scheduling in the UE performing a logical channel priority procedure in the MAC layer.
  • BSD Bucket Size Duration
  • Second embodiment A method for processing by considering base station PBR information received from a base station and uplink grants of base stations received within one TTI.
  • the RRC controls the scheduling of uplink data by signaling for each logical channel.
  • the RRC message may include signaling configuration information for controlling logical channel scheduling.
  • the logical channel configuration information on the RRC message may include at least one or more of priority, priority bit rate (PBR), and bucket size duration (BSD).
  • PBR priority bit rate
  • BSD bucket size duration
  • the RRC message may include additional configuration information for controlling logical channel scheduling in the radio bearer configuration information.
  • additional configuration information for controlling logical channel scheduling in the radio bearer configuration information.
  • logical channels to be transmitted through a base station / base station cell group to transmit traffic of the corresponding radio bearer or a specific base station / base station cell group are distinguished.
  • base station / cell group classification information or cell index or base station / cell group classification information list or cell index list
  • k for which a logical channel is configured may be included.
  • k ⁇ M
  • S ⁇ may mean a MeNB / MeNB cell group + SeNB / SeNB cell group
  • the distinguishing display for the above-described base station / cell group classification information is only an example, and is not limited thereto. That is, it may be configured according to various methods capable of distinguishing at least one base station / cell group that services data transmission belonging to a logical channel.
  • a terminal may perform a priority procedure in consideration of at least one or more uplink grants (or uplink available resources) received in one TTI from all base stations processing all configured radio bearers.
  • the terminal maintains base station / cell group classification information (or cell index or base station index list or cell index list) k configured with variable Bj for each logical channel in the MAC layer.
  • Bj is initialized to zero when the associated logical channel is set.
  • Each transmission time interval (TTI) is increased by PBR ⁇ TTI duration.
  • the base station's PBR value is set, the base station's Bj of the corresponding logical channel is increased by each base station's PBR ⁇ TTI duration in each transmission time interval (TTI).
  • PBR represents a priority bit rate of logical channel j.
  • Bj can't exceed the bucket size. And if the Bj value is larger than the bucket size of logical channel j, it is set to the bucket size.
  • the bucket size of the logical channel is equal to PBR ⁇ BSD.
  • the terminal of the present invention may perform the priority procedure in consideration of uplink grants (or uplink available resources) received from base stations within one TTI.
  • PBR information for each base station / cell group or PBR ratio information for each base station / cell group may be allocated to logical channel configuration information for logical channels of radio bearers configured through a plurality of base stations.
  • the master base station processing PBR ratio information or the master base station processing PBR ratio information and the secondary base station processing PBR ratio information can be allocated, respectively.
  • the master base station PBR eg, MeNBprioritisedBitRate / MSGprioritisedBitRate
  • the secondary base station PBR eg, SeNBprioritisedBitRate / SCGprioritisedBitRate
  • LogicalChannelConfig information element logical channel configuration information.
  • the secondary base station PBR information for processing the secondary base station logical channel distinguished from the PBR information included in the logical channel configuration information of the existing radio bearer for example, SeNBprioritisedBitRate). / SCGprioritisedBitRate).
  • FIG. 9 is a diagram illustrating an example of logical channel configuration information including the above-described base station / cell group classification information and base station-specific PBR.
  • PBR information for logical channel processing of a secondary base station / cell group may be distinguished.
  • FIG. 10 is a diagram illustrating another example of logical channel configuration information including base station / cell group classification information and base station-specific PBR.
  • the UE may distinguish between two base stations / cell groups to perform logical channel processing through two logical channel configuration information elements for each base station for a radio bearer configured through two base stations, as shown in FIG. PBR information for logical channel processing can be distinguished.
  • a base station / cell group for performing logical channel processing may be distinguished by including a logical channel configuration information element for each base station in the radio bearer configuration information.
  • FIG. 11 illustrates another example of logical channel configuration information including base station / cell group classification information and base station-specific PBR.
  • the terminal may include logical channel configuration information of the secondary base station / cell group in addition to the existing logical channel configuration information as shown in FIG. 11 for the radio bearer configured through two base stations.
  • the prioritizedBitRate included in the secondary base station / cell group logical channel configuration information indicates the secondary base station PBR.
  • the existing logical channel configuration information (LogicalChannelConfig) may represent the master / base station logical channel configuration information.
  • PBR information can be distinguished.
  • Priority, bucketsizeduration, and logicalchannelgroup can use the same value. In this case, it may or may not be included in LogicalChannelConfigSeNB / SCG.
  • the radio bearers configured through the plurality of base stations For logical channels, the master base station PBR information, the master base station PBR information, the secondary base station PBR information, or the secondary base station PBR information may be obtained through a MAC control element in the master base station (or the secondary base station or the master base station and the secondary base station) in consideration of the radio resource environment.
  • the master base station PBR ratio information may be transmitted to the terminal.
  • the UE calculates the PBR of each base station calculated according to the master base station PBR information or the master base station PBR information and the secondary base station PBR information or the master base station PBR ratio information included on the previously received MAC control element.
  • a logical channel priority procedure can be performed by using this method.
  • the terminal When a new transmission is performed, the terminal performs the following priority procedure.
  • Step 1) For base stations / cell groups serving data transmission belonging to logical channels configured in a terminal, Bj> in logical channels configured to transmit data through corresponding base station / cell group for each base station / cell group Allocate logical resources to 0 in decreasing priority order.
  • a master base station uplink grant (or an average of uplink grants during a TTI multiple or an uplink available resource or TTI multiple for a corresponding TTI) may be applied to a corresponding TTI.
  • Allocates resources for Bj (master base station PBR ⁇ TTI duration) calculated through master base station PBR information to uplink grant resources (or uplink available resources) to be transmitted through the uplink available resource average value of Secondary base station to uplink grant resources (or uplink available resources) to transmit through the base station uplink grant (or uplink grant average value over a TTI multiple or uplink available resources for that TTI or uplink available resource average over a TTI multiple)
  • Resource for Bj (secondary base station PBR ⁇ TTI duration) calculated through PBR information can be allocated. .
  • the uplink grant resource (or uplink available resource) to be transmitted through one base station is greater than the Bj value calculated through the above-described base station PBR information, the uplink grant (or uplink available resource) to be transmitted through another base station If resources remain in the resource allocation to the uplink grant to be transmitted through another base station.
  • an uplink grant (or TTI) to a corresponding TTI in order to allow high priority data to be transmitted through a base station having a better radio quality between the terminal and the base station.
  • TTI uplink grant
  • a base station or a base station having a better radio quality between the terminal and the base station based on RRM measurement information
  • a resource for Bj (the corresponding base station PBR x TTI duration) calculated through the above-described base station PBR information may be allocated first to an uplink grant resource (or uplink available resource) to be transmitted.
  • the uplink grant of the base station having a large uplink grant is not exhausted and resources for Bj (corresponding to the corresponding base station PBR ⁇ TTI duration) calculated through the corresponding base station PBR information for the remaining base stations other than the base station having a large uplink grant, If not all can be allocated, the remaining Bj may be allocated to the uplink grant resources to be transmitted through the base station having a large uplink grant to the TTI described above. If the Bj value calculated through each base station PBR information is larger than the uplink grant resource (or uplink available resource) to be transmitted through one base station, the resource (or uplink available to uplink grant to be transmitted through another base station) is greater. Resource), the resource may be allocated to an uplink grant (or uplink available resource) to be transmitted through another base station.
  • Step 2 The UE reduces Bj to the total size of MAC SDUs serviced in the logical channel of Step 1.
  • Step 3 If any resource remains, all logical channels configured in the corresponding base station for each base station are serviced in strict decreasing priority order regardless of the Bj value until the data or uplink grant for the logical channel is exhausted. .
  • signaling configuration information for example, priority bitrate (PBR) and bucket size duration
  • PBR priority bitrate
  • BSD Bit Size Duration
  • signaling configuration information for controlling the second base station logical channel scheduling is configured.
  • the terminal may allow the MAC layer / object peered to or for each base station to determine resource allocation through coordination. That is, although the terminal has signaling configuration information for controlling the logical channel scheduling of the first base station / cell group and signaling configuration information for controlling the logical channel scheduling of the second base station / cell group, the terminal may perform a logical channel priority procedure.
  • the MAC layer / object peered to the first base station (or first base station cell group) and the MAC layer / object peered to the second base station (second base station cell group) may cooperate to allocate resources to the logical channel.
  • Embodiment 3 A method of processing logical channel priority in order of RRC message new configuration information and received uplink grant order.
  • the RRC controls the scheduling of uplink data by signaling for each logical channel.
  • the RRC message may include signaling configuration information for controlling logical channel scheduling.
  • the logical channel configuration information on the RRC message may include at least one or more of priority, priority bit rate (PBR), and bucket size duration.
  • the RRC message may include additional signaling configuration information for controlling logical channel scheduling in the radio bearer configuration information or in the radio bearer configuration information.
  • the logical channel configuration information included in the radio bearer configuration information on the RRC message includes a logical channel configured to distinguish logical channels to be transmitted through a base station / base station cell group or a specific base station / base station cell group to which traffic of the radio bearer is transmitted.
  • the base station / cell group identification information (or cell index or base station / cell group identification list or cell index list) k may be included.
  • k ⁇ M
  • S ⁇ may mean a MeNB / MeNB cell group + SeNB / SeNB cell group
  • the distinguishing display for the above-described base station / cell group classification information is only an example, and is not limited thereto. That is, it may be configured according to various methods capable of distinguishing at least one base station / cell group that services data transmission belonging to a logical channel.
  • the terminal of the present invention may independently perform a priority procedure for each uplink grant received from the base stations, one for each base station. That is, the terminal may independently perform the priority procedure for each MAC layer / object in the terminal peered to the MAC layer of each base station in the MAC layer. Therefore, a plurality of priority procedures may be performed in one TTI.
  • the terminal maintains a base station index (or cell index or base station index list or cell index list) k configured with variable Bj for each logical channel in the MAC layer. Bj is initialized to zero when the associated logical channel is set.
  • Each transmission time interval (TTI) is increased by PBR ⁇ TTI duration.
  • the Bj for each base station / cell group of the corresponding logical channel is increased by the PBR ⁇ TTI duration for each base station / cell group in each transmission time interval (TTI). That is, the Bj for each MAC layer / object of a terminal peered to the MAC layer / object of the base station is increased by PBR ⁇ TTI duration for each base station / cell group in each transmission time interval (TTI).
  • PBR represents a priority bit rate of logical channel j.
  • Bj can't exceed the bucket size.
  • the Bj value is larger than the bucket size of logical channel j, it is set to the bucket size.
  • the bucket size of the logical channel is equal to PBR ⁇ BSD.
  • the terminal of the present invention may independently perform a priority procedure, one for each base station, for each uplink grant (or uplink available resource) received from the base stations. That is, the terminal may independently perform the priority procedure for each MAC layer / object in the terminal peered to the MAC layer of each base station in the MAC layer.
  • PBR information for each base station / cell group is allocated to logical channel configuration information for logical channels of radio bearers configured through a plurality of base stations. For example, for logical channels of radio bearers configured through the master base station and the secondary base station, the master base station that has established the RRC connection (or the master base station that has established the RRC connection has been confirmed by the secondary base station through the master base station).
  • the master base station PBR information eg, MeNBprioritisedBitRate / MSGprioritisedBitRate
  • the secondary base station PBR information eg, SeNBprioritisedBitRate / SCGprioritisedBitRate
  • the secondary base station PBR information for processing the secondary base station logical channel, which is distinguished from the PBR information included in the logical channel configuration information of the existing radio bearer (for example, SeNBprioritisedBitRate / SCGprioritisedBitRate).
  • FIG. 12 illustrates another example of logical channel configuration information including the above-described base station / cell group classification information and base station-specific PBR.
  • PBR information for logical channel processing of a secondary base station / cell group may be distinguished.
  • FIG. 13 is a diagram illustrating another example of logical channel configuration information including the above-described base station / cell group classification information and base station-specific PBR.
  • the UE may distinguish between two base stations / cell groups to perform logical channel processing through two logical channel configuration information elements for each base station for a radio bearer configured through two base stations as shown in FIG. 13. PBR information for logical channel processing can be distinguished.
  • the base station / cell group to perform logical channel processing may be distinguished by including only logical channel configuration information elements to be transmitted through one base station in the radio bearer configuration information.
  • FIG. 14 illustrates another example of logical channel configuration information including the above-described base station / cell group classification information and base station-specific PBR.
  • the UE may include logical channel configuration information of the secondary base station / cell group in addition to the existing logical channel configuration information as shown in FIG. 14 for a radio bearer configured through two base stations.
  • the prioritizedBitRate included in the secondary base station / cell group logical channel configuration information indicates the secondary base station / cell group PBR.
  • the existing logical channel configuration information (LogicalChannelConfig) may represent the master / base station logical channel configuration information.
  • the terminal can distinguish two base stations / cell groups to perform logical channel processing for the radio bearer configured through the two base stations, and perform logical channel processing for each base station / cell group.
  • PBR information can be distinguished.
  • Priority, bucketsizeduration, and logicalchannelgroup can use the same value. In this case, it may or may not be included in LogicalChannelConfigSeNB / SCG.
  • the RRC connection is performed on logical channels of radio bearers configured through the plurality of base stations.
  • the uplink grant received from the master base station configured with the master base station PBR information or master base station PBR ratio through the MAC control element at the master base station (or the secondary base station supporting the master base station through the master base station).
  • Deliver information to the terminal The terminal performs a logical channel priority procedure using the PBR of the master base station calculated according to the master base station PBR information or the master base station PBR ratio information included on the previously received MAC control element until the new MAC control element is received. can do.
  • the secondary base station For the uplink grant received from the secondary base station supporting the master base station, for the logical channels of the radio bearer configured by the terminal through the plurality of base stations, the secondary base station (or the secondary base station supporting the master base station is via the master base station or After the secondary base station receives confirmation from the master base station, the secondary base station delivers the master base station PBR information or the master base station PBR ratio information to the terminal through the MAC control element. Before the UE receives the new MAC control element, the UE performs a logical channel priority procedure by using the PBR of the master base station calculated according to the master base station PBR information or the master base station PBR ratio information included on the previously received MAC control element. Can be.
  • the terminal When a new transmission is performed for each uplink grant received from each base station, the terminal performs the following priority procedure.
  • Step 1) The terminal allocates resources in decreasing priority order to all logical channels of Bj> 0 configured in the base station receiving the uplink grant (or uplink available resources). That is, the terminal allocates resources in decreasing priority order to logical channels having Bj> 0 mapped to each base station for each base station. Alternatively, the terminal allocates resources in decreasing priority order to all logical channels having Bj> 0 mapped to each MAC layer / object for each MAC layer / object peered to the MAC layer / object of the base station.
  • one PBR prioritisedBitRate
  • a radio bearer configured through a first base station or a radio bearer configured through a second base station uses one piece of prioritized bit rate (PBR) information as in the past.
  • PBR prioritized bit rate
  • the above-described master base station PBR information eg, MeNBprioritisedBitRate
  • secondary base station PBR information eg, SeNBprioritisedBitRate
  • Step 2 The UE reduces Bj to the total size of MAC SDUs serviced in the logical channel of Step 1.
  • Step 3 If any resource remains, all logical channels configured in the base station / cell group that received the uplink grant in the MAC layer / object of the terminal have a Bj value until the data or uplink grant for the logical channel is exhausted. Regardless of whether it is served in a strict decreasing priority order.
  • signaling configuration information for example, priority bitrate (PBR) and bucket size duration
  • PBR priority bitrate
  • BSD bucket Size Duration
  • signaling configuration information for controlling the second base station logical channel scheduling is configured.
  • the terminal may perform the logical channel priority procedure independently for each base station or between MAC layers / objects peered to each base station. That is, the terminal has signaling configuration information for controlling the logical channel scheduling of the first base station / cell group and signaling configuration information for controlling the logical channel scheduling of the second base station / cell group, and when performing a logical channel priority procedure.
  • a resource may be allocated to a logical channel mapped to.
  • a terminal and a base station capable of performing all the operations according to the embodiments of the present invention described above will be described with reference to the drawings.
  • 15 is a signal diagram illustrating operations of a terminal and a base station according to an embodiment of the present invention.
  • the present invention provides a method for a UE to perform a logical channel priority procedure in a MAC layer, the method comprising: receiving at least one higher layer signaling configuring a dual connection with a first base station and a second base station and based on logical channel configuration information;
  • the method may include distinguishing a base station or a cell group mapped to each of the logical channels, and performing a logical channel priority procedure for each base station or cell group classified in the MAC layer.
  • the first base station 1502 may transmit higher layer signaling to the terminal 1501 (S1510).
  • the terminal 1501 may configure a radio bearer with the first base station 1502 and the second base station 1503 based on the received higher layer signaling.
  • the terminal 1501 uses a radio bearer configured through the first base station 1502 or the second base station 1503 and a radio bearer configured through both the first base station 1502 and the second base station 1503. Can be configured. That is, it is possible to configure a radio bearer to be separated bearer.
  • the higher layer signaling received by the terminal 1501 is based on the first base station priority bit rate for the radio bearer configured through both the first base station and the second base station.
  • Prioritized Bit Rate (PBR) information and second base station priority bit rate (PBR) information may be included.
  • the higher layer signaling received by the terminal 1501 may include classification information for performing a logical channel priority procedure for each base station or cell group. That is, it may include classification information for performing a logical channel priority procedure for each MAC layer or MAC entity of a terminal peered to the MAC layer or MAC entity of each base station.
  • the terminal 1501 may select a base station or a cell group mapped to each of at least one logical channel based on radio bearer configuration information that may be included in the received higher layer signaling or based on logical channel configuration information in the radio bearer configuration information. Can be distinguished (S1520).
  • the terminal 1501 may configure at least one logical channel, and may distinguish the MAC layer / object of the terminal peered to the MAC layer / object of the base station or cell group or base station mapped to each configured logical channel. Can be. That is, a logical channel mapped to the first base station 1502 and a logical channel mapped to the second base station 1503 may be distinguished. As an example, the terminal may distinguish using the base station / cell group identification information value described above.
  • the terminal 1501 may perform a logical channel priority procedure for uplink data transmission for each base station or cell group divided in the MAC layer (S1530).
  • a priority procedure for each logical base station or cell group may be performed for logical channels of radio bearers configured through both the first base station 1502 and the second base station 703 according to each embodiment. Can be done.
  • the terminal 1501 maps logical channels of radio bearers configured through both the first base station and the second base station to map the logical channels to the first base station and the second base station, respectively. Can be done.
  • the terminal 1501 includes a logical channel mapped to a second base station or a second base station cell group for logical channels of radio bearers configured through both the first base station and the second base station.
  • the information may be performed using second base station priority bit rate (PBR) information.
  • PBR second base station priority bit rate
  • the terminal 1501 may independently perform the priority procedure for each base station or cell group according to an uplink grant received in each TTI.
  • the terminal 1501 has high priority data for logical channels of radio bearers, which are bearer separated and configured through a plurality of base stations as in the first embodiment, according to the radio quality between the terminal and the base station. It may be allocated first and then transmitted. For example, the terminal 1501 may perform a logical channel priority procedure so that resources are first allocated and transmitted to a base station having a better radio quality between the terminal and the base station based on a base station having a large uplink grant or RRM measurement information in a corresponding TTI. It may be.
  • the terminal 1501 may allow data to be distributed and transmitted for each base station for logical channels of radio bearers configured through a plurality of base stations. For example, the terminal 1501 divides Bj into uplink grant resources by the number of base stations constituting the logical channel, a value calculated in proportion to the uplink grant resources to be transmitted through each base station for each base station, and each base station.
  • the logic is calculated through one or more of a value calculated in proportion to or inversely proportional to the radio quality state or RRM measurement information between the radio quality state and the Bj sum of the logical channels allocated to each base station.
  • the channel priority procedure may be performed.
  • the terminal 1501 may include a wireless base station configured through a plurality of base stations.
  • the priority procedure may be specified based on priority bit processing preference base station / cell group or based on one or more of priority bit processing preference base station / cell group identification (or cell index) setting and rule set. Can be performed.
  • the terminal 1501 when the terminal 1501 includes preferred base station / cell group classification information for uplink data transmission in configuration information of a radio bearer configured through a plurality of base stations, the terminal 1501 transmits the uplink data of the corresponding data radio bearer to the corresponding base station.
  • a logical channel priority procedure for uplink data transmission may be performed.
  • the terminal 1501 may perform the priority procedure by comprehensively considering uplink grants (or uplink available resources) received from base stations in one TTI as in the second embodiment.
  • the UE receives a first base station PBR (eg, MeNBprioritisedBitRate) information and a second base station PBR (eg, SeNBprioritisedBitRate) for a radio bearer configured through the first base station and the second base station.
  • PBR eg, MeNBprioritisedBitRate
  • SeNBprioritisedBitRate SeNBprioritisedBitRate
  • the terminal 1501 may independently perform a priority procedure for each uplink grant received from the base stations, one for each base station.
  • the first base station PBR information eg, MeNBprioritisedBitRate
  • the second base station PBR information eg, SeNBprioritisedBitRate
  • the priority procedure may be independently performed for each MAC layer / object in the terminal peered to the MAC layer of each base station.
  • 16 is a diagram illustrating an operation of a terminal according to another embodiment of the present invention.
  • the present invention provides a method for a UE to perform a logical channel priority procedure in a MAC layer, the method comprising: receiving at least one higher layer signaling configuring a dual connection with a first base station and a second base station and based on logical channel configuration information;
  • the method may include distinguishing a base station or a cell group mapped to each of the logical channels, and performing a logical channel priority procedure for each base station or cell group classified in the MAC layer.
  • the terminal may receive higher layer signaling (S1610).
  • the higher layer signaling received by the terminal is the first base station priority for the radio bearer configured through both the first base station and the second base station. It may include bitrate (Prioritised Bit Rate (PBR)) information and second base station priority bit rate (PBR) information.
  • PBR Primary Bit Rate
  • PBR second base station priority bit rate
  • the terminal may configure a radio bearer with the first base station and the second base station based on the received higher layer signaling. As described above, the terminal may configure a radio bearer configured through the first base station or the second base station and a radio bearer configured through both the first base station and the second base station. That is, it is possible to configure a radio bearer to be separated bearer.
  • the terminal may distinguish a base station or a cell group mapped to each of at least one logical channel based on logical channel configuration information that may be included in the received higher layer signaling (S1620). For example, the terminal may configure at least one logical channel, and may distinguish the MAC layer / object of the terminal peered to the MAC layer / object of the base station or cell group or base station mapped to each configured logical channel. That is, a logical channel mapped to the first base station and a logical channel mapped to the second base station can be distinguished. As an example, the terminal may distinguish using the base station / cell group identification information value described above.
  • the terminal may perform a logical channel priority procedure for uplink data transmission for each base station or cell group divided in the MAC layer (S1630).
  • the priority procedure of logical channels mapped to both the first base station and the second base station may be performed according to each embodiment.
  • the UE performs a priority procedure by mapping a logical channel of a radio bearer configured through both the first base station and the second base station to the first base station and the second base station, respectively. Can be done.
  • the UE may perform logical channel mapping for a logical channel of a radio bearer configured through both the first base station and the second base station and for logical channels mapped to the second base station or the second base station cell group.
  • it may be performed using second base station priority bit rate (PBR) information.
  • PBR second base station priority bit rate
  • the terminal may independently perform the priority procedure for each base station or cell group according to an uplink grant received in each TTI.
  • the terminal is divided into bearers according to each of the above-described first to third embodiments, and high priority data is allocated to specific channels according to radio quality between the terminal and the base station for logical channels of radio bearers configured through a plurality of base stations.
  • data may be distributed and transmitted for each base station for logical channels of radio bearers configured through a plurality of base stations.
  • the logical channels of radio bearers configured through a plurality of base stations may be performed by designating a priority bit processing preferred base station / cell group.
  • the priority procedure may be performed in consideration of uplink grants (or uplink available resources) received from base stations within one TTI.
  • the priority procedure may be independently performed for each uplink grant received from the base stations, one for each base station.
  • 17 is a diagram illustrating an operation of a first base station according to another embodiment of the present invention.
  • generating a higher layer signaling for a dual connectivity configuration of the terminal and the terminal each of at least one logical channel Transmitting higher layer signaling including logical channel configuration information for distinguishing a base station or a cell group mapped to the uplink and an uplink allocated by the terminal by performing a logical channel priority procedure for each base station or cell group separated in the MAC layer Receiving link data.
  • the first base station may generate higher layer signaling including logical channel configuration information (S1710).
  • higher layer signaling may include first base station priority bit rate (PBR) information and second base station priority bit rate (PBR) information for a radio bearer configured through both the first base station and the second base station. May contain information.
  • PBR first base station priority bit rate
  • PBR second base station priority bit rate
  • the first base station may transmit the generated higher layer signaling to the terminal (S1720).
  • the first base station transmits priority bit processing preferred base station index (or cell index) configuration information, rule set information, first base station PBR information, first base station PBR information, second base station PBR information, and the like to the terminal according to the above-described embodiments.
  • One or more pieces of information of the first base station PBR ratio information and the second base station PBR ratio information may be further transmitted.
  • the first base station may receive uplink data from the terminal (S1730).
  • the uplink data may be data allocated by performing a priority procedure on logical channels mapped to the first base station for logical channels of radio bearers configured through both the first base station and the second base station. have.
  • the uplink data may be allocated by independently performing a priority procedure for each of the first base station or the first base station cell group according to an uplink grant transmitted to each TTI.
  • the uplink data may include logical channels of radio bearers configured through a first base station and logical channels mapped to the first base station among radio bearers configured through both a first base station and a second base station. It may be assigned by performing a logical channel priority procedure.
  • the first base station may receive the allocated uplink data according to each detailed operation example of the first to third embodiments described above.
  • different base stations are connected by non-ideal backhaul to transmit data by merging radio resources through a plurality of base stations, and the terminal is configured to process a specific radio bearer through only one base station.
  • another bearer may effectively allocate resources for each logical channel in consideration of logical channel priority ratios for uplink radio resources received from the plurality of base stations, even when configured to process through a plurality of base stations.
  • FIG. 18 is a view showing the configuration of a user terminal according to another embodiment of the present invention.
  • a user terminal 1800 includes a receiver 1810, a controller 1820, and a transmitter 1830.
  • a terminal performing a logical channel priority procedure based on the receiving unit 1810 and the logical channel configuration information for receiving the higher layer signaling forming a dual connection with the first base station and the second base station
  • the controller 1820 may include a base station or a cell group mapped to each of the at least one logical channel, and perform a logical channel priority procedure for each base station or cell group separated in the MAC layer.
  • the receiver 1810 may further receive downlink control information, data, and a message from a base station through a corresponding channel.
  • the receiving unit 1810 may include first base station priority bit rate (PBR) information and second base station priority bit rate for a radio bearer configured through both the first base station and the second base station.
  • PBR priority bit rate
  • Higher layer signaling including PBR may be received.
  • the controller 1820 is a terminal of the overall terminal according to the effective allocation of resources for each logical channel in consideration of the logical channel priority ratio for the uplink radio resources received from a plurality of base stations for the terminal required to perform the present invention described above. You can control the operation.
  • controller 1820 may perform logical channel priority procedure by mapping logical channels of radio bearers configured through both the first base station and the second base station to the first base station and the second base station, respectively.
  • controller 1820 performs a priority procedure on logical channels mapped to a second base station or a second base station cell group for logical channels of radio bearers configured through both the first base station and the second base station. It may also be performed using second base station priority bit rate (PBR) information.
  • PBR second base station priority bit rate
  • controller 1820 may independently perform a priority procedure for each base station or cell group according to an uplink grant received in each TTI.
  • the transmitter 1830 transmits uplink control information, data, and a message to a base station through a corresponding channel. That is, the allocated uplink data may be transmitted through a logical channel priority procedure according to each embodiment.
  • FIG. 19 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.
  • a base station 1900 includes a controller 1910, a transmitter 1920, and a receiver 1930.
  • the base station 1900 according to another embodiment of the present invention, the control unit 1910 for generating a higher layer signaling for the dual connectivity configuration of the terminal and distinguishes the base station or cell group to which the terminal is mapped to each of at least one logical channel Transmitter 1920 for transmitting higher layer signaling including logical channel configuration information and a receiver for receiving uplink data allocated by UE performing logical channel priority procedure for each base station or cell group separated in MAC layer. (1930).
  • the controller 1910 may be configured to effectively allocate resources for each logical channel in consideration of logical channel priority ratios for uplink radio resources received from a plurality of base stations. Control the operation.
  • controller 1910 may generate information such as higher layer signaling and priority bitrate required for the terminal to allocate uplink radio resources according to the above-described present invention.
  • the transmitter 1920 may transmit higher layer signaling including the generated logical channel configuration information to the terminal.
  • Upper layer signaling may include first base station priority bit rate (PBR) information and second base station priority bit rate (PBR) information for a radio bearer configured through both the first base station and the second base station. It may be.
  • PBR first base station priority bit rate
  • PBR second base station priority bit rate
  • the transmitter 1920 transmits priority bit processing preferred base station index (or cell index) configuration information, rule set information, first base station PBR information, first base station PBR information, and second base station to the terminal according to the above-described embodiments.
  • priority bit processing preferred base station index or cell index
  • the receiver 1930 may receive uplink data from the terminal.
  • the received uplink data may be data allocated by performing a priority procedure on logical channels mapped to the first base station for logical channels of radio bearers configured through both the first base station and the second base station.
  • the uplink data may be allocated by independently performing a priority procedure for each of the first base station or the first base station cell group according to an uplink grant transmitted to each TTI.
  • the uplink data may be a logical channel mapped to the first base station among logical channels of radio bearers configured through a first base station and logical channels of radio bearers configured through both a first base station and a second base station. May be allocated by performing a logical channel priority procedure.
  • the first base station may receive the allocated uplink data according to each detailed operation example of the first to third embodiments described above.
  • the transmitter 1920 and the receiver 1930 are used to transmit and receive signals, messages, and data necessary for carrying out the present invention described above.

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

Abstract

La présente invention concerne un procédé et un appareil permettant de gérer une priorité de canal logique par rapport à un téléchargement de données à partir d'une couche MAC au moyen d'un terminal, lorsque des données d'utilisateur sont transmises par le terminal dans un environnement à petites cellules à l'aide d'une ou de plusieurs stations de base. La présente invention pourvoit ainsi à un procédé et à un appareil, et plus particulièrement, à un procédé pour un terminal mettant en œuvre un traitement de priorité de canal logique, comprenant les étapes consistant à : recevoir une signalisation de couche supérieure qui établit une connectivité double avec une première station de base et une seconde station de base ; distinguer une station de base ou un groupe de cellules mappé sur chaque canal parmi au moins un canal logique, sur la base d'informations de configuration de canal logique ; et mettre en œuvre le traitement de priorité de canal logique pour chaque station de base ou groupe de cellules distingué au moyen de la couche MAC.
PCT/KR2014/008500 2013-09-26 2014-09-12 Procédé de gestion de priorité de canal logique et appareil associé Ceased WO2015046787A1 (fr)

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KR10-2013-0114784 2013-09-26
KR20130114784 2013-09-26
KR20140021976A KR20150034586A (ko) 2013-09-26 2014-02-25 논리채널 우선순위 처리 방법 및 그 장치
KR10-2014-0021976 2014-02-25

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WO2016163660A1 (fr) * 2015-04-09 2016-10-13 Lg Electronics Inc. Procédé de réalisation d'une priorisation de canal logique dans une agrégation de porteuses ayant une cellule fonctionnant dans un spectre sans licence et un dispositif associé
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EP4138464A3 (fr) * 2015-08-31 2023-03-15 Samsung Electronics Co., Ltd. Procédé et appareil de mise en oeuvre de protocole sans fil configurable selon des services et des dispositifs
CN107889224A (zh) * 2016-09-29 2018-04-06 华为技术有限公司 一种逻辑信道的调度方法、装置及系统
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CN107889224B (zh) * 2016-09-29 2020-06-16 华为技术有限公司 一种逻辑信道的调度方法、装置及系统
CN112291037B (zh) * 2016-10-07 2022-06-03 宏达国际电子股份有限公司 无线通信系统中执行编解码速率调配的装置及方法
CN112291037A (zh) * 2016-10-07 2021-01-29 宏达国际电子股份有限公司 无线通信系统中执行编解码速率调配的装置及方法
CN108012332A (zh) * 2016-11-01 2018-05-08 华为技术有限公司 一种资源分配方法及终端
WO2018082501A1 (fr) * 2016-11-01 2018-05-11 华为技术有限公司 Terminal et procédé d'attribution de ressources
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CN108012332B (zh) * 2016-11-01 2021-01-15 华为技术有限公司 一种资源分配方法及终端
US20230065560A1 (en) * 2017-03-16 2023-03-02 Motorola Mobility Llc Determining a priority order based on an uplink transmission parameter
CN108633079A (zh) * 2017-03-24 2018-10-09 中兴通讯股份有限公司 一种逻辑信道优先级处理的方法和装置
US10973069B2 (en) 2017-08-07 2021-04-06 Lg Electronics Inc. Method and apparatus for keeping DC configuration
WO2019031827A1 (fr) * 2017-08-07 2019-02-14 Lg Electronics Inc. Procédé et appareil de maintien de configuration de dc
US11589257B2 (en) 2018-04-10 2023-02-21 Lg Electronics Inc. Method for performing a logical channel prioritization (LCP) procedure by a relay UE in wireless communication system and a device therefor
WO2019198838A1 (fr) * 2018-04-10 2019-10-17 Lg Electronics Inc. Procédé de réalisation d'une procédure de priorisation de canal logique (lcp) par un ue relais dans un système de communication sans fil et dispositif associé
WO2020080913A1 (fr) * 2018-10-19 2020-04-23 엘지전자 주식회사 Procédé prenant en charge une transmission de données séparée pour des tranches de réseau indépendantes dans un système de communication sans fil
US11924746B2 (en) 2018-10-19 2024-03-05 Lg Electronics, Inc Method supporting separate data transmission for independent network slices in wireless communication system
WO2020141955A1 (fr) * 2019-01-04 2020-07-09 Samsung Electronics Co., Ltd. Procédé et dispositif de réalisation de rapport d'état de liaison montante destiné à une faible latence dans un système de communication mobile de prochaine génération
US11800526B2 (en) 2019-01-04 2023-10-24 Samsung Electronics Co., Ltd Method and device for performing uplink status report for low latency in next-generation mobile communication system
US12244017B2 (en) 2019-09-23 2025-03-04 Lg Energy Solution, Ltd. Binder for negative electrode of lithium secondary battery and negative electrode for lithium secondary battery including the same
CN114095960A (zh) * 2022-01-06 2022-02-25 深圳传音控股股份有限公司 处理方法、通信设备及存储介质

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