WO2014133271A1 - 스몰셀 환경에서 단말의 버퍼상태보고 전송 방법 및 그 장치 - Google Patents
스몰셀 환경에서 단말의 버퍼상태보고 전송 방법 및 그 장치 Download PDFInfo
- Publication number
- WO2014133271A1 WO2014133271A1 PCT/KR2014/001124 KR2014001124W WO2014133271A1 WO 2014133271 A1 WO2014133271 A1 WO 2014133271A1 KR 2014001124 W KR2014001124 W KR 2014001124W WO 2014133271 A1 WO2014133271 A1 WO 2014133271A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base station
- ccs
- information
- cell
- buffer status
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0278—Traffic management, e.g. flow control or congestion control using buffer status reports
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W28/00—Network traffic management; Network resource management
- H04W28/02—Traffic management, e.g. flow control or congestion control
- H04W28/0252—Traffic management, e.g. flow control or congestion control per individual bearer or channel
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/10—Connection setup
- H04W76/11—Allocation or use of connection identifiers
-
- 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
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
- H04W80/02—Data link layer protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Definitions
- the present invention relates to a wireless communication system, and more particularly, to a buffer status reporting technique for a terminal to transmit uplink data using multiple carriers between base stations in a small cell environment dually connected with different base stations.
- LTE Long Term Evolution
- LTE-Advanced Long Term Evolution-Advanced
- 3GPP series High-speed large-capacity communication systems capable of transmitting and receiving various data such as video and wireless data beyond voice-oriented services.
- BSR buffer status report
- the present invention proposes a method and apparatus for a terminal to separate a buffer status report of a data radio bearer associated with each base station and transmit them to each base station.
- the present invention provides a method for transmitting a buffer status report by a terminal constituting a dual connection with the first base station and the second base station connected by non-ideal backhaul, the first base station or the first base station Receiving an RRC reconfiguration message including distinguishing information for distinguishing a radio bearer to be transmitted through CCs (Component Carriers) of the first base station and the radio bearer to be transmitted through the CCs of the second base station or the second base station and the MAC layer Distinguishing logical channels to be mapped and delivered through CCs of the first base station or the first base station and logical channels to be mapped and delivered through the second base station or the second base station CCs and through CCs of the first base station or the first base station Logical channels to be mapped and delivered through buffer states of logical channels or logical channel groups to be mapped and delivered, and through the second base station or second base station CCs Or triggering a buffer status report by dividing the logical channel
- CCs Component Carriers
- the first base station of the present invention is a method for controlling the buffer status report of the terminal, the radio bearer to be delivered through the CCs (Component Carriers) of the first base station or the first base station and CCs of the second base station or the second base station Generating distinction information for distinguishing a radio bearer to be transmitted through; transmitting an RRC reconfiguration message including the discrimination information to the terminal; and logical channels to be mapped and delivered through a second base station or second base station CCs; Receiving a buffer status report of the logical channel or logical channel group to be mapped and delivered through the CCs of the first base station or the first base station, which is distinct from the buffer status report of the logical channel group.
- CCs Component Carriers
- the present invention is a terminal for transmitting a buffer status report by forming a dual connection with the first base station and the second base station connected by the non-ideal backhaul, Component Carriers (CCs) of the first base station or the first base station from the first base station CCs of the first base station or the first base station in the MAC layer and the receiving unit for receiving the RRC reconfiguration message including the distinguishing information for distinguishing the radio bearer to be delivered through the CCs of the second base station or the second base station or the second base station Distinguish between logical channels to be mapped and delivered through logical channels to be mapped and delivered through a second base station or second base station CCs, and logical channels or logic to be mapped and delivered through CCs of a first base station or a first base station.
- the buffer state of the channel group and the logical channel or logical channel group to be mapped and delivered through the second base station or the second base station CCs Transmitting a buffer status report of logical channels or logical channel groups to
- the present invention provides a first base station for controlling the buffer status report of the terminal, through a radio bearer to be delivered through the CCs (Component Carriers) of the first base station or the first base station and through the CCs of the second base station or the second base station
- a control unit for generating discrimination information for distinguishing a radio bearer to be transmitted a transmitter for transmitting an RRC reconfiguration message including the discrimination information to the terminal, and logical channels or logical channel groups to be mapped and transmitted through the second base station or the second base station CCs.
- a base station including a receiving unit for receiving a buffer status report of the logical channel or logical channel to be mapped and delivered through the CCs of the first base station or the first base station, which is distinct from the buffer status report of the.
- 1 is a diagram illustrating a MAC configuration of a conventional terminal.
- FIG. 2 is a diagram illustrating an example of a network configuration scenario to which the present invention can be applied.
- FIG. 3 is a diagram illustrating another example of a network configuration scenario to which the present invention can be applied.
- FIG. 4 is a diagram illustrating another example of a network configuration scenario to which the present invention can be applied.
- FIG. 5 is a diagram illustrating an example of operations of a terminal and a base station according to an embodiment of the present invention.
- FIG. 6 is a view showing another example of the operation of the terminal and the base station according to another embodiment of the present invention.
- FIG. 7 is a flowchart illustrating the operation of a terminal according to another embodiment of the present invention.
- FIG. 8 is a diagram illustrating an example of a configuration of a MAC PDU to which the present invention can be applied.
- FIG. 9 is a diagram illustrating a buffer status report MAC control element format to which the present invention can be applied.
- FIG. 10 is a flowchart illustrating the operation of a base station according to another embodiment of the present invention.
- FIG. 11 is a diagram illustrating an example of a hierarchical structure of a terminal according to another embodiment of the present invention.
- FIG. 12 is a diagram illustrating another example of a hierarchical structure of a terminal according to another embodiment of the present invention.
- FIG. 13 is a diagram illustrating another example of a hierarchical structure of a terminal according to another embodiment of the present invention.
- FIG. 14 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.
- 15 is a diagram illustrating a configuration of a user terminal 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 comprehensive concept of a terminal in wireless communication.
- UE user equipment
- LTE Long Term Evolution
- HSPA High Speed Packet Access
- MS Mobile Station
- UT User Terminal
- SS Global System for Mobile communications
- GSM Global System for Mobile communications
- 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. It may be called other terms such as a base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and the like.
- a base transceiver system an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and the like.
- 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 communication range.
- BSC base station controller
- 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
- Uplink and downlink transmit control information through control channels such as Physical Downlink Control CHannel (PDCCH), Physical Control Format Indicator CHannel (PCFICH), Physical Hybrid ARQ Indicator CHannel (PHICH), and Physical Uplink Control CHannel (PUCCH).
- a data channel is configured such as PDSCH (Physical Downlink Shared CHannel), PUSCH (Physical Uplink Shared CHannel) and the like to transmit data.
- 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, and a PDSCH may be described in the form of 'sending and receiving a PUCCH, a PUSCH, a PDCCH, and a PDSCH.
- the base station 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 first terminal UE1 may transmit an uplink signal to the eNB and the second terminal may transmit an uplink signal to the RRH.
- Low power nodes represent nodes that use lower transmit (Tx) power than typical macro nodes.
- small cells can be constructed using a low power remote radio head (RRH), which is a geographically dispersed antenna within macro cell coverage.
- RRH remote radio head
- an ideal backhaul means a backhaul that exhibits very high throughput and very low latency, such as a dedicated point-to-point connection using optical fiber, line of sight (LOS) microwaves.
- backhaul that exhibits relatively low throughput and large delay, such as digital subscriber line (xDSL) and Non LOS microwaves is called non-ideal backhaul.
- a plurality of serving cells may be merged to provide a service to a user equipment. That is, a plurality of serving cells may be configured for the UE in an RRC connection (Radio Resource Control conected) state, and when an ideal backhaul is established between the macro cell node and the RRH, the macro cell and the RRH cell are configured together with the serving cells.
- RRC connection Radio Resource Control conected
- the terminal may have only one RRC connection with the network.
- one serving cell provides NAS mobility information (e.g. Tracking Area Identity, TAI), and RRC connection In a reset / handover, one serving cell provides a security input.
- NAS mobility information e.g. Tracking Area Identity, TAI
- RRC connection In a reset / handover, one serving cell provides a security input.
- a cell is called a primary cell (PCell).
- the primary cell can only be changed with the handover procedure.
- 1 is a diagram illustrating a MAC configuration of a conventional terminal.
- the MAC layer of the UE serves to transmit data by connecting an upper layer and a lower layer through a single MAC entity.
- Secondary cells may be configured as a serving cell together with a primary cell according to terminal capabilities.
- One base station that processes primary and secondary cells has different carriers (DL / UL PCC: Downlink / Uplink Primary Component Carrier, DL / UL SCC: Downlink / Uplink Secondary Component Carrier) in the physical layer, but MAC (Medium) Access Control) layer only and does not affect the RLC / PDCP layer before the carrier aggregation technology for the further layer (eg, RLC / PDCP layer). That is, the carrier merging operation cannot be distinguished in the RLC / PDCP layer.
- DL / UL PCC Downlink / Uplink Primary Component Carrier
- DL / UL SCC Downlink / Uplink Secondary Component Carrier
- MAC Medium Access Control
- the MAC layer performs mapping between logical channels and transport channels.
- a function of multiplexing MAC Service Data Units (SDUs) into transport blocks (TBs) transmitted from one or different logical channels on physical layer transport channels may be performed.
- it performs 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.
- SDUs de-multiplexing MAC Service Data Units
- HARQ hybrid automatic repeat request
- all uplink logical channels of a UE are multiplexed in a single MAC entity and mapped to transport channels (UL-SCHs). That is, the logical channels are multiplexed and mapped without distinguishing transport channels.
- the terminal is configured with one or more secondary cells (SCells)
- SCells there may be a plurality of downlink shared channels (hereinafter, referred to as DL-SCHs).
- DL-SCHs downlink shared channels
- UL-SCH uplink shared channels
- RACH random access channels
- one primary cell has one DL-SCH and one UL-SCH
- each secondary cell has one DL-SCH, zero or one UL-SCH and zero or one RACH.
- the buffer status reporting procedure is a procedure used to provide the serving cell base station with information about the amount of available data for transmission in terminal uplink (UL) buffers.
- Buffer Status Report (BSR) should be triggered when the following events occur.
- Uplink data is available for one logical channel belonging to one logical channel group (LCG) for transmission in a Radio Link Control (RLC) entity or a Packet Data Convergence Protocol (PDCP) entity.
- RLC Radio Link Control
- PDCP Packet Data Convergence Protocol
- the available data belongs to a logical channel group belonging to any logical channel group and belonging to one logical channel having a higher priority than the priority of the logical channels for the already available data, or belonging to one logical channel group. No data is available for any of these.
- the buffer status report in this case is called "Regular BSR".
- the buffer status report is called "Padding BSR" when an uplink resource is allocated and the number of padding bits is equal to or greater than the size of the subheader added to the buffer status reporting MAC control element.
- Period BSR The buffer status report when the periodic BSR-Timer expires.
- One MAC Protocol Data Unit may include at most one MAC buffer status reporting control element (BSR control element).
- BSR control element MAC buffer status reporting control element
- the UE should transmit at most one Regular / Periodic BSR within one Transmission Time Interval (TTI). If the UE is requested to transmit a plurality of MAC PDUs in one TTI, the UE may include a padding BSR to any of the MAC PDUs not including the Regular / Periodic BSR.
- TTI Transmission Time Interval
- All BSRs sent in one TTI always indicate the buffer status after all MAC PDUs have been created for this TTI.
- Each logical channel group should report at most one buffer status value per TTI. This value must be reported in all buffer status reports (BSRs) that report the buffer status for this logical channel group.
- the conventional mobile communication network uses a carrier aggregation technology based on a single base station.
- the macro cell and the small cell have to be scheduled under the control of one base station, and for this purpose, there is a problem that an ideal backhaul is required between the macro cell node and the small cell node. Therefore, when a macro cell and a small cell are constructed through separate base stations through non-ideal backhaul, there is a problem in that carrier aggregation technology cannot be used.
- a component carrier (Component Carrier) delivered by the terminal for each logical channel could not be distinguished, and there was a problem in that the buffer status could not be reported to individual base stations.
- Component Carrier Component Carrier
- the present invention provides a mobile communication network in which the macro cell and the small cell are constructed through a separate base station through a backhaul through a small cell (or cooperation between the macro cell and the small cell) under the control of the macro cell. It is an object of the present invention to provide a media access control method and a buffer status reporting method for delivering user plane data traffic.
- FIG. 2 is a diagram illustrating an example of a network configuration scenario to which the present invention can be applied.
- the macro cell 211 and the small cells 212 have the same carrier frequency F1 and are connected through the non-ideal backhaul between the macro cell base station and the small cell base station. Small cells may be built overlaying within macro cell coverage. Outdoor small cell environments and small cell clusters 212 are contemplated.
- FIG. 3 is a diagram illustrating another example of a network configuration scenario to which the present invention can be applied.
- the macro cell 311 and the small cells 312 have different carrier frequencies (F1 and F2) and have non-ideal backhaul between the macro cell base station and the small cell base station. Is connected through. Small cells 312 may be built overlaid in macro cell coverage. An outdoor small cell environment or an indoor small cell environment and a small cell cluster are considered.
- FIG. 4 is a diagram illustrating another example of a network configuration scenario to which the present invention can be applied.
- the terminal may dually connect with the macro cell and the small cell to perform communication.
- the terminal may be dually connected to a plurality of small cells to perform communication.
- the small cell base stations may each operate as a stand-alone base station. That is, the terminal may establish one RRC connection with the small cell base station and transmit one or more Signaling Radio Bearers (SRBs) for control plane data transmission.
- SRBs Signaling Radio Bearers
- the UE may have a small cell base station and one or more DRBs (Data Radio Bearers) for user plane data transmission.
- DRBs Data Radio Bearers
- the UE may transmit data through one or more small cell base stations (or through cooperation between the macro cell base station and one or more small cell base stations) under the control of the macro cell base station.
- user plane data may be transmitted through cooperation between small cell base stations.
- the terminal establishes one RRC connection with the macro cell base station of FIG. 2 or 3 or the small cell base station of FIG. 4 for transmission of control plane data, and one or more signaling radios. Bearers).
- the UE may have one or more DRBs (Data Radio Bearers) through the macro cell base station and the small cell base station of FIG. 2 or 3 or the small cell base station of FIG. 4 for user plane data transmission.
- DRBs Data Radio Bearers
- the UE may have only one RRC connection with the macro cell base station.
- the UE may have only one small cell base station and one RRC connection.
- one serving cell in an RRC connection establishment / re-establishment / handover performs NAS mobility information (e.g., TAI: Tracking Area Identity).
- NAS mobility information e.g., TAI: Tracking Area Identity
- one serving cell provides a security input in RRC connection reset / handover.
- Such a cell is called a primary cell (PCell).
- the primary cell may change with the handover procedure.
- the small cell is controlled by the base station of the macro cell of FIG. 2 or 3 or the base station of the small cell of FIG. 4 (or a base station of the macro cell operating as a PCell) operating as a primary cell (PCell). Or secondary cells (or additional serving cells) in cooperation with the base station of the small cell.
- the cell (s) of the small cell base station which is not the base station of the macro cell of FIG. 2 or 3 or the base station of the small cell of FIG. 4 that acts as a primary cell (or provides a primary cell)
- additional secondary cell (s) configured to provide additional radio resources to the terminal as a secondary cell (s).
- the terminal may be controlled by the base station of the macro cell of FIG. 2 or FIG. 3 operating as the primary cell or the base station of the small cell of FIG. 4, and may perform communication through multiple connections with the small cell operating as at least one secondary cell. have.
- the terminal cooperates with the base station of the macro cell of FIG. 2 or FIG. 3 operating as a primary cell (PCell) or the base station of the small cell of FIG. 4 (or cooperates with the base station of the macro cell or small cell base station operating as a PCell).
- a procedure of adding or removing the small cell to the secondary cell SCell may be performed.
- the terminal is one or more DRBs (Data Radio) through the small cell based on the RRC signaling through the base station of the macro cell of Figure 2 or 3 or the small cell of Figure 4 operating as a primary cell (PCell) Bearers may be added or released.
- DRBs Data Radio
- the terminal When the terminal is in an RRC Connected state by establishing an RRC connection with the macro cell base station of FIG. 2 or 3 or the small cell base station of FIG. 4 operating as a primary cell (PCell), the terminal is a small cell (FIG. 4). In this case, other small cells included in the small cell cluster, rather than the small cell serving as the primary cell, may be added as the secondary cell (SCell).
- SCell secondary cell
- a base station (macro cell base station or small cell base station) of a cell operating as a primary cell (PCell) detects a new secondary cell (SCell) candidate. After detection, the base station of the primary cell determines the secondary cell addition / modification to add a secondary base station cell or to modify Radio Resource Config Dedicated of the configured secondary base station cell. Subsequently, the base station (macro cell base station or small cell base station) of the cell serving as the primary cell adds / modifies the secondary cell of the small cell base station through an RRC connection reconfiguration procedure.
- the UE performs operation of adding or modifying a secondary cell (SCell).
- SCell secondary cell list information
- the secondary cell (SCell) list information to be added / modified may include one or more of the following information.
- SCellIndex An index used to identify one secondary cell (SCell) among secondary cells (SCells) configured for the terminal.
- CellIdentification Information about the Physical Cell ID (PCI) and the Absolute Radio Frequency Channel Number (ARFCN) of the secondary cell (SCell).
- PCI Physical Cell ID
- ARFCN Absolute Radio Frequency Channel Number
- Radio Resource Configuration Common SCell Information (radioResourceConfigCommonScell): The essential information for the UE to operate in the secondary cell, which is common radio resource configuration information (eg, physical layer parameters and random access parameters) in the system information. It includes.
- Radio resource configuration dedicated SCell information (radioResourceConfigDedicatedSCell): Contains UE-specific configuration information (eg, physicalConfigDedicatedSCell, mac-MainConfigSCell) applicable to the secondary cell (SCell).
- the terminal may perform a cell according to the received radio resource configuration common SCell information and dedicated radio resource configuration SCell information. Add the SCell corresponding to the identifier.
- the cell of the SCell index information may be added as the secondary cell.
- the terminal modifies the secondary cell (SCell) according to the received radio resource configuration-specific SCell information. do.
- the information included in the above-described secondary cell (SCell) list information to be added / modified so far is that the base station of the macro cell acting as the primary cell (PCell) or the base station of the small cell is determined by the secondary cell through the RRC connection reconfiguration procedure.
- an interrogation may be made through an interface between the base station of the primary cell and the secondary cell base station.
- the base station of the primary cell may receive necessary information by requesting necessary information through an interface with the base station of the secondary cell to be added or modified.
- the information included in the secondary cell (SCell) list information to be added / modified by the base station acting as the primary cell (PCell) may be previously added or modified through OAM (Operations, Administration and Maintenance). It can be used through the information stored in the procedure.
- SCell secondary cell
- OAM Operations, Administration and Maintenance
- a base station of a macro cell of FIG. 2 or 3 or a base station of a small cell of FIG. 4 that operates as a primary cell (or provides a primary cell) may be referred to as a primary cell base station or a first base station or It describes as a master base station.
- a small cell base station operating as a secondary cell will be described by describing it as a secondary cell base station, a second base station, or a secondary base station.
- the aforementioned macro cell base station, primary cell base station, and first base station may be used in the same sense, and the above-described small cell base station, secondary cell base station, secondary base station, and second base station may be used in the same meaning. .
- the primary cell base station may configure radio resources for the primary cell or the secondary cell base station as well as the addition / modification of the secondary cell described above. This will be described in more detail below.
- the primary cell base station may configure radio resources for the base station acting as the primary cell and / or the base station acting as the secondary cell through the RRC connection reconfiguration procedure.
- radioResourceConfigDedicated information There is a method of using radioResourceConfigDedicated information.
- the primary cell base station may configure a radio resource using a radio bearer addition modification list (drb-ToAddModList) or a radio bearer release list (drb-ToReleaseList) of radioResourceConfigDedicated information.
- drb-ToAddModList a radio bearer addition modification list
- drb-ToReleaseList a radio bearer release list
- the radio bearer release information of the radio bearer release list includes a radio bearer identity (drb-Identity) to be released, and the radio bearer of the radio bearer add modification list (drb-ToAddModList).
- Additional modification information includes EPS bearer identifier (eps-BearerIdentity), drb-Identity, pdcp-Config, rlc-Config, logicalChannelIdentity, logicalChannelConfig.
- the radio bearer release information may include a cell identifier (eg, physical cell identity, PCI) or primary cell indication information, or an index or primary cell base station indication information for the terminal to distinguish a cell.
- the radio bearer release information may include only the drb-Identity to be released.
- the radio bearer modification information may include a cell identifier (for example, PCI) or a secondary cell index or an index for identifying a cell by a terminal or a secondary cell base station index / indication information.
- a cell identifier for example, PCI
- a secondary cell index for identifying a cell by a terminal or a secondary cell base station index / indication information.
- the UE can distinguish that the specific radio bearer is a radio bearer configured through the secondary cell, the secondary cell base station, or the secondary base station CCs.
- the above-described specific radio bearer may be added / modified such that the specific radio bearer of the base station of the macro cell acting as the primary cell is processed through the primary cell base station and the small cell base station acting as the secondary cell.
- the radio bearer modification information of the radio bearer addition modification list includes an EPS bearer identifier (eps-BearerIdentity), drb-Identity, pdcp-Config, rlc-Config, logicalChannelIdentity, and logicalChannelConfig.
- the radio bearer modification information may include a cell identifier (for example, PCI) or a secondary cell index, or an index or secondary cell base station index / indication information for distinguishing a cell by a terminal, or a primary cell base station and a secondary cell (or serving cell). It may include information for identifying the radio bearer configured through the small cell base station operating in).
- a cell identifier for example, PCI
- a secondary cell index for example, or a secondary cell index
- an index or secondary cell base station index / indication information for distinguishing a cell by a terminal, or a primary cell base station and a secondary cell (or serving cell). It may include information for identifying the radio bearer configured through the small cell base station operating in).
- the radio bearer additional modification information includes EPS bearer identifier (eps-BearerIdentity), drb-Identity, pdcp-Config, rlc-Config, logicalChannelIdentity, logicalChannelConfig.
- the radio bearer additional modification information may include a cell identifier (eg, PCI) or primary cell indication information or an index for identifying a cell by a terminal or base station indication information of a primary cell.
- a cell identifier eg, PCI
- primary cell indication information e.g, an index for identifying a cell by a terminal or base station indication information of a primary cell.
- a method of using radio resource configuration dedicated SCell information A method of using radio resource configuration dedicated SCell information.
- the primary cell base station may configure a radio resource using a radio bearer addition modification list (drb-ToAddModList) or a radio bearer release list (drb-ToReleaseList) of radioResourceConfigDedicated information.
- drb-ToAddModList a radio bearer addition modification list
- drb-ToReleaseList a radio bearer release list
- the primary cell base station may configure radio resources for the secondary cell base station by including a radio bearer modification list (drb-ToAddModList) or a radio bearer release list (drb-ToReleaseList) in radio resource configuration dedicated SCell (radioResourceConfigDedicatedSCell) information. Can be.
- a radio bearer modification list (drb-ToAddModList) or a radio bearer release list (drb-ToReleaseList) in radio resource configuration dedicated SCell (radioResourceConfigDedicatedSCell) information.
- radio resourceConfigDedicatedSCell radio resource configuration dedicated SCell
- radio bearer of radioResourceConfigDedicated information may include a radio bearer identity (drb-Identity) to be released.
- radio bearer modification information included in the radio bearer modification list (drb-ToAddModList) of radio resource configuration dedicated SCell (radio ResourceConfigDedicatedSCell) information includes EPS bearer identifier (eps-BearerIdentity), drb-Identity, pdcp-Config, and rlc-. Includes Config, logicalChannelIdentity, logicalChannelConfig.
- the radio bearer release information may include a cell identifier (for example, PCI) or primary cell indication information, or an index or primary cell base station indication information for the terminal to distinguish a cell.
- a cell identifier for example, PCI
- primary cell indication information for example, PCI
- index or primary cell base station indication information for the terminal to distinguish a cell.
- the radio bearer release information may include only drb-Identity information to be released.
- the radio bearer release information may be included in the radio resource configuration dedicated SCell (radio ResourceConfigDedicated SCell) information only if the cell identifier (for example, PCI) or primary cell indication information or index or primary for the terminal to distinguish the cell Cell base station indication information.
- the cell identifier for example, PCI
- primary cell indication information or index or primary for the terminal to distinguish the cell Cell base station indication information for example, PCI
- the radio bearer modification information may include a cell identifier (eg, PCI) or a secondary cell index, or an index or secondary cell base station index / indication information for distinguishing a cell by a terminal.
- a cell identifier eg, PCI
- a secondary cell index e.g., an index or secondary cell base station index / indication information for distinguishing a cell by a terminal.
- the radio bearer modification information may only be included in the radio resource configuration dedicated SCell (radio ResourceConfigDedicated SCell) information, for example, a cell identifier (for example, PCI) or a secondary cell index, or an index for the terminal to distinguish a cell or Secondary cell base station index / indication information may be included.
- the UE can distinguish that the specific radio bearer is a radio bearer configured through the secondary cell or the secondary base station or the secondary base station CCs.
- the specific radio bearer may be added / modified to process the specific radio bearer of the macro cell base station operating as the primary cell through the primary cell base station and the secondary cell base station.
- the radio bearer modification information included in the radio bearer modification list (drb-ToAddModList) of the radio resource configuration dedicated SCell (radio ResourceConfigDedicatedSCell) information includes EPS bearer identifier (eps-BearerIdentity), drb-Identity, pdcp-Config, and rlc-. Includes Config, logicalChannelIdentity, logicalChannelConfig.
- the radio bearer modification information may include a cell identifier (for example, PCI) or a secondary cell index, or an index or secondary cell base station index / indication information for distinguishing a cell, or a primary cell base station and a secondary cell base station. It may include information for indicating that the radio bearer is configured through.
- a cell identifier for example, PCI
- a secondary cell index for example, a secondary cell index
- an index or secondary cell base station index / indication information for distinguishing a cell, or a primary cell base station and a secondary cell base station. It may include information for indicating that the radio bearer is configured through.
- a specific radio bearer processed only through a macro cell base station operating as a primary cell may be added / modified.
- the radio bearer additional modification information may include a cell identifier (eg, PCI) or primary cell indication information or an index or primary cell base station indication information for the terminal to distinguish the cell.
- PCI cell identifier
- the UE can distinguish that the specific radio bearer is a radio bearer configured through the primary cell, the primary cell base station, or the primary cell base station CCs.
- the information contained in the radio bearer add modification list (drb-ToAddModList) or the radio bearer release list (drb-ToReleaseList) or radio resource configuration dedicated SCell (radioResourceConfigDedicatedSCell) described above is used for the primary cell base station to perform the RRC connection reconfiguration procedure.
- the primary cell base station may receive necessary information by requesting necessary information through an interface with the secondary cell base station to be added or modified.
- the network may activate or deactivate the secondary cell of the small cell base station operating as the secondary cell using the following method.
- a method using MAC signaling by a primary cell base station is a method using MAC signaling by a primary cell base station.
- the primary cell base station may activate / deactivate the small cell composed of the secondary cell by sending an activation / deactivation MAC control element (CE).
- CE activation / deactivation MAC control element
- the terminal maintains an SCell deactivation timer (sCellDeactivationTimer) for the configured secondary cell. And deactivate the secondary cell associated with its expiry.
- the SCell deactivation timer may be configured by higher layer signaling (eg, RRC message).
- the terminal When the terminal receives the activation / deactivation MAC CE for activating the secondary cell for this TTI for each transmission time interval (TTI) and each configured secondary cell, the terminal activates the secondary cell for the corresponding TTI.
- TTI transmission time interval
- the terminal deactivates the secondary cell to the TTI, Scell deactivation Stop the timer and flush the Hybrid automatic repeat request (HARQ) buffer associated with the secondary cell.
- HARQ Hybrid automatic repeat request
- the physical downlink control channel (PDCCH) for the activated secondary cell indicates an uplink grant (downlink assignment) or downlink assignment (downlink assignment), or for the serving cell scheduling the activated secondary cell If the PDCCH indicates an uplink grant or downlink assignment, the SCell deactivation timer associated with the secondary cell is restarted.
- PDCCH physical downlink control channel
- the primary cell base station may configure (eg, add a DRB) a radio bearer resource for the base station of the small cell composed of the above-described secondary cell when the small cell composed of the secondary cell is activated. That is, in order for the primary cell base station to configure the radio bearer resource for the secondary base station, it should be known that the small cell composed of the secondary cell is activated or activated first in a deactivated state.
- the primary cell base station may always activate the secondary cell of the small cell base station when configuring the radio bearer resource (for example, adding a DRB) to the small cell base station composed of the secondary cell. That is, when the primary cell base station configures the radio bearer resource for the secondary base station, the secondary cell remains in an activated state until the radio resource is released (for example, DRB release). For example, when activating, when the deactivation timer value is infinite, or when adding / setting a DRB to a secondary base station, or when a secondary cell is configured as a small cell and radio resources (for example, DRB) are configured The cell can always be activated.
- the radio bearer resource for example, adding a DRB
- the primary cell base station transmits data through the deactivated secondary cell when the secondary cell is deactivated while radio resources are configured (for example, DRB addition) for the small cell base station configured as the secondary cell.
- the secondary cell may be activated to transmit.
- the primary cell base station and the secondary cell base station may exchange information related to activation / deactivation of the secondary cell through an interface between the primary cell base station and the secondary cell base station.
- the secondary cell base station may activate / deactivate the small cell acting as the secondary cell by transmitting the activation / deactivation MAC control element (CE CE).
- CE CE activation / deactivation MAC control element
- the terminal maintains the SCell deactivation timer for the configured secondary cell. And deactivate the secondary cell associated with its expiry.
- the SCell deactivation timer is configured by higher layer signaling (eg, RRC message).
- the terminal When the UE receives the activation / deactivation MAC CE for activating the secondary cell in this TTI for each transmission time interval (TTI) and each configured secondary cell, the terminal activates the secondary cell in the corresponding TTI.
- TTI transmission time interval
- the terminal If the terminal receives the activation / deactivation MAC CE deactivating the secondary cell at this TTI or the SCell deactivation timer expires at this TTI, the terminal deactivates the secondary cell at the TTI and the SCell deactivation timer. After halting, the HARQ buffer associated with the secondary cell is flushed.
- the PDCCH for the activated secondary cell indicates an uplink grant or DL assignment, or the PDCCH for the serving cell for scheduling the activated secondary cell is an uplink grant Or DL assignment, restarts the SCell deactivation timer associated with the secondary cell.
- the primary cell base station may configure (eg, add a DRB) a radio bearer resource for the small cell base station configured as the secondary cell when the small cell configured as the secondary cell is activated. That is, in order for the primary cell base station to configure the radio bearer resource for the secondary base station, it should be known that the small cell composed of the secondary cell is activated or activated first in a deactivated state.
- the primary cell base station may always activate the secondary cell of the small cell base station when configuring a radio bearer resource (for example, adding a DRB) to the small cell base station consisting of the secondary cell. That is, when the primary cell base station configures the radio bearer resource for the secondary base station, the secondary cell remains in an activated state until the radio resource is released (for example, DRB release).
- the deactivation timer value is infinite, the secondary cell is always activated when the DRB is established because the secondary cell is configured as a small cell by adding / setting the DRB to the secondary base station. Can be baited.
- the secondary cell base station may deactivate the activated secondary cell.
- the primary cell base station and the secondary cell base station may exchange information related to activation / deactivation of the secondary cell through an interface between the primary cell base station and the secondary cell base station.
- the primary cell base station may include information for secondary cell activation / deactivation in an RRC connection reconfiguration message and transmit the information to the terminal to activate / deactivate the secondary cell.
- the primary cell base station may activate / deactivate when adding / modifying a secondary cell (small cell) or configuring a radio bearer resource for the secondary cell base station (small cell base station) (eg, adding a DRB).
- the secondary cell may be activated / deactivated by including information for the RRC connection reconfiguration message to the terminal.
- the terminal maintains the SCell deactivation timer for the configured secondary cell. And deactivate the secondary cell associated with its expiry.
- the SCell deactivation timer may also be configured by higher layer signaling (eg, RRC message).
- the UE adds / modifies a secondary cell (small cell) from the primary cell base station or receives a RRC connection reconfiguration message for configuring radio resources for the secondary cell (small cell base station).
- the configured secondary cell may remain activated until cell removal or radio resource release (eg, DRB release).
- the terminal when the terminal establishes an RRC connection with the primary cell base station and transmits user data by setting radio resources through the secondary cell base station, the terminal is associated with each base station.
- the present invention will be described in detail for dividing the buffer status report of the DRB and providing the information to each base station.
- the buffer status reporting procedure is used to provide the serving base station with information about the amount of data available for transmission in the uplink buffers of the terminal.
- the primary cell base station may configure radio resources (eg, DRB) for the primary cell base station and / or the secondary cell base station through an RRC connection reconfiguration procedure.
- radio resources eg, DRB
- the above-described radio bearer additional modification information on the radio resource configured is eps-BearerIdentity (EPS bearer identifier), drb-Identity, pdcp-Config, rlc-Config, logicalChannelIdentity (logical channel identifier) and logicalChannelConfig (logical channel configuration information) It contains one or more pieces of information.
- the logical channel configuration information may be configured and transmitted as follows.
- logicalChannelConfig The information included in each field of the logical channel configuration information (logicalChannelConfig) is briefly described as follows.
- BucketSizeDuration Contains information about bucket size duration for logical channel prioritization.
- Logical Channel Group Contains information about logical channel group mapping (0 ⁇ 3 integer) of logical channel for BSR reporting.
- Prioritized Bitrate Contains information about the priority bit rate for logical channel priority.
- ⁇ Priority contains information about logical channel priority (1 ⁇ 16 integer).
- FIG. 5 is a diagram illustrating an example of operations of a terminal and a base station according to an embodiment of the present invention.
- a method for transmitting a buffer status report by a terminal constituting a dual connection with a first base station and a second base station connected by non-ideal backhaul according to an embodiment of the present invention, the first base station or the first base station Receiving an RRC reconfiguration message including distinguishing information for distinguishing between the radio bearer to be transmitted through CCs (Component Carriers) and the radio bearer to be transmitted through the CCs of the second base station or the second base station and the first base station or Distinguishing logical channels to be mapped and delivered through CCs of a first base station and logical channels to be mapped and delivered through a second base station or second base station CCs and mapped and delivered through CCs of a first base station or a first base station Logical channels or logic to be mapped and delivered through the buffer state of the logical channels or logical channel group to be mapped and the second base station or second base station CCs Triggering a buffer status report by dividing a null group and transmitting a buffer status report
- the terminal is a first base station (primary cell base station).
- buffer status report information of a specific radio bearer for the radio bearers mapped to the first base station and the radio bearers mapped to the second base station when forming a dual connection with the second base station (secondary cell base station). May be transmitted to a base station to which a specific radio bearer is mapped.
- the buffer status report for the first bearer formed through the first base station may be transmitted to the first base station, and the buffer status report for the second bearer formed through the second base station may be transmitted to the second base station.
- first base station and the second base station of the present invention may form a S1-U interface with the serving gateway (S-GW), respectively, and may configure a radio bearer having an independent PDCP layer.
- the first base station may form one S1-U interface with the serving gateway, and the second base station may also form a separate S1-U interface with the serving gateway.
- the terminal according to another embodiment of the present invention is dedicated to the radio resource configuration including the distinguishing information for distinguishing the component carrier (s) of the secondary cell (s) provided by the second base station or the second base station from the first base station Distinguishing the logical channel (s) to be transmitted to the component carrier (s) of the secondary cell (s) provided by the second base station or the second base station based on the step of receiving information and the radio resource configuration-only information. Triggering a buffer status report according to the buffer status of the logical channel (s) configured to be transmitted, and transmitting the buffer status report to the component carrier (s) of the second base station or secondary cell (s).
- the terminal 501 may distinguish information from the first base station (primary cell base station) 502 by using the small cell or small cell base station or small cell base station configured as the second base station secondary cell.
- the radio resource configuration only information may be received by being included in higher layer signaling (eg, an RRC reconfiguration message).
- the terminal 501 may be configured as a second base station (secondary cell base station, 503) or secondary cell (s) on the basis of the distinguishing information included in the radio resource configuration dedicated information and / or radio resource configuration dedicated SCell information described above in the MAC layer.
- Logical channels processed through component carrier (s) (CCs) may be distinguished (S520).
- the terminal 501 performs a buffer state trigger event according to the buffer state of each divided logical channel processed through the second base station (secondary cell base station 503) or component carrier (s) (CCs) of the secondary cell (s). If occurs, trigger the buffer status report (S525).
- the terminal 501 transmits the buffer status report of the divided logical channels according to the buffer status report trigger to the component carrier (s) of the second base station 503 or the secondary cell (s) (S530).
- the terminal 501 is a small cell or small cell base station or small configured as a secondary cell in a logical cell to be delivered through a small cell or a small cell base station or a small cell base station or CCs (Component Carriers) of the small cell base station in the MAC layer It may be mapped to transport channels (eg, UL-SCHs (Uplink Shared Channels)) through CCs of the cell base station. That is, specific logical channel (s) may be transmitted through specific CCs.
- transport channels eg, UL-SCHs (Uplink Shared Channels)
- the terminal may receive radio resource-only information including information for distinguishing it from the primary cell base station (first base station, 502) through higher layer signaling (S515).
- the dedicated radio resource configuration information may include the following additional radio bearer modification information.
- the radio bearer additional modification information includes at least one of eps-BearerIdentity (EPS bearer identifier), drb-Identity, pdcp-Config, rlc-Config, logicalChannelIdentity (logical channel identifier) and logicalChannelConfig (logical channel configuration information).
- EPS bearer identifier eps-BearerIdentity
- drb-Identity epdcp-Config
- rlc-Config epdcp-Config
- logicalChannelIdentity logical channel identifier
- logicalChannelConfig logical channel configuration information
- the discrimination information received by the terminal includes at least one of a cell identifier, a secondary cell index, a cell discrimination index information, and a secondary cell base station index / display information. It may be included and received (S515).
- the terminal 501 includes a cell identifier (for example, PCI) or a secondary cell index or an index or secondary cell base station index / indication information for identifying the cell by the radio bearer additional modification information.
- a cell identifier for example, PCI
- a secondary cell index or an index or secondary cell base station index / indication information for identifying the cell by the radio bearer additional modification information.
- the small cell or the small cell base station or the small cell base station CCs configured as the secondary cell may be distinguished from the wireless bearer.
- the terminal 501 includes a cell identifier (for example, PCI) or a secondary cell index or an index or secondary cell base station index / indication information for identifying a cell by a logical channel configuration information (logicalChannelConfig).
- the small cell or small cell base station configured as a cell or the radio bearer configured through the small cell base station CCs may be distinguished (S520). That is, information for distinguishing that a specific radio bearer is a small cell composed of a secondary cell or a small cell base station or a radio bearer configured through the small cell base station CCs may be included in the logical channel configuration information (S515).
- the terminal 501 may make it possible to distinguish and map specific logical channel (s) to specific small cells or small cell base stations or small cell base station CCs composed of secondary cells through such discrimination information in the MAC layer.
- the discrimination information received by the terminal 501 may include a second base station or a secondary cell of a field included in any one of logical channel group information, priority information, and logical channel identifier information.
- Field designation information or field extension information for identifying the component carrier (s) of the terminal (s) may be included (S515).
- the terminal distinguishes the logical channel by including the distinguishing information in the logical channel group information
- the logical channel group field which is composed of 2 bits and may have a value of 0 to 3
- Small cell consisting of a cell or a small cell base station or a small cell base station CCs can be specified or used to extend the number of bits (for example, 3 bits, 4 bits, 5 bits or more) and a specific value is made up of secondary cells.
- the small cell base station or the small cell base station CCs may be designated and used to be distinguished (S520).
- the terminal may distinguish the logical channel.
- a small cell or a small cell consisting of a secondary cell having a specific value in a priority field that may have a value of 1 to 16 may be described.
- the cell base station or the small cell CCs may be designated and used to distinguish, or the number of bits may be extended and a specific value may be specified and used to distinguish the small cell or the small cell base station or the small cell base station CCs composed of the secondary cells.
- a specific value of the logical channel identifiers 3 to 10 may be referred to as a small cell or small cell base station or small cell base station CCs.
- logical channels 3 to 4 or 3 to 5 may be used as primary cell logical channel identifiers, and 5 to 10 or 6 to 10 may be mapped to logical channel identifiers of small cells or small cell base stations or small cell base station CCs. have.
- radio resource configuration dedicated information and / or radio resource configuration dedicated SCell includes distinguishing information for distinguishing component carrier (s) of the second base station or secondary cell (s). For example explained.
- the radio resource configuration-only information includes discrimination information for distinguishing a radio bearer transmitted only through the component carrier (s) of the first base station or the primary cell base station.
- a terminal is dually connected with a first base station operating as a primary cell and a second base station operating as a secondary cell to transmit a buffer status report.
- Receiving radio resource configuration-specific information including distinguishing information for distinguishing radio bearers transmitted only through the component carrier (s) of the head cell base station and based on the radio resource configuration-specific information of the first base station or primary cell base station. Identifying logical channel (s) to be transmitted to component carrier (s); triggering buffer status reporting according to the buffer status of the separated logical channel (s); and the component carrier or first of the first base station or primary cell.
- the method may include transmitting a buffer status report to one base station cells.
- the terminal 501 is a macro cell or macro cell base station or macro cell base station CCs configured as a primary cell for radio bearers processed only from a first base station (primary cell base station) 502 to a macro cell operating as a primary cell.
- the radio resource configuration exclusive information including the information capable of distinguishing the radio receiver is received (S515).
- the radio resource configuration only information may be received by being included in higher layer signaling (eg, an RRC reconfiguration message).
- the terminal 501 uses the component carrier (s) (CCs) of the first base station (primary cell base station 502) or primary cell base station based on the distinguishing information included in the above-described radio resource configuration information in the MAC layer.
- the logical channels to be processed can be distinguished.
- the terminal 501 is buffered according to the buffer state of the divided logical channel (s) processed through the component carrier (s) (CCs) of the first base station (primary cell base station, 502) or primary cell base station.
- CCs component carrier
- the trigger event triggers the buffer status report (S520).
- the terminal 501 separately transmits the buffer status report of the logical channel divided according to the buffer status report trigger to component carrier (s) of the first base station 502 or the primary cell base station.
- the UE includes a macro cell or a macro cell configured as a primary cell in a MAC layer or a logical cell to be delivered through CCs (Component Carriers) of a macro cell base station or a macro cell base station. It may map to transport channels (eg, UL-SCHs (Uplink Shared Channels)) through the CCs of the base station. That is, specific logical channels may be transmitted through specific CCs.
- CCs Component Carriers
- the terminal may receive radio resource-only information including information for distinguishing it from the primary cell base station (first base station) through higher layer signaling.
- the dedicated radio resource configuration information may include the following additional radio bearer modification information.
- the radio bearer additional modification information includes at least one of eps-BearerIdentity (EPS bearer identifier), drb-Identity, pdcp-Config, rlc-Config, logicalChannelIdentity (logical channel identifier) and logicalChannelConfig (logical channel configuration information).
- EPS bearer identifier eps-BearerIdentity
- drb-Identity epdcp-Config
- rlc-Config epdcp-Config
- logicalChannelIdentity logical channel identifier
- logicalChannelConfig logical channel configuration information
- the discrimination information received by the terminal includes at least one of a cell identifier, primary cell indication information, cell discrimination index information, and primary cell base station indication information, and further information on radio bearer modification or logical channel configuration information. It can be included in the received.
- the terminal includes a cell identifier (for example, PCI) or primary cell indication information or index or primary cell base station indication information for the terminal to distinguish the cell in the radio bearer modification information, It is possible to distinguish the radio bearer configured through the macro cell composed of the head cell or the macro cell base station or the macro cell base station CCs.
- a cell identifier for example, PCI
- PCI primary cell indication information or index or primary cell base station indication information
- the terminal uses the cell identifier (for example, PCI) or primary cell indication information or logical cell configuration information indices or primary cell base station indication information for identifying the cell in the logical channel configuration (logicalChannelConfig), to the primary cell
- the cell identifier for example, PCI
- the terminal may be able to discriminate and map specific logical channel (s) to specific macro cell or macro cell base station or macro cell base station CCs composed of primary cells through such discrimination information in the MAC layer.
- the discrimination information received by the terminal according to another embodiment of the present invention is a component of the first base station or the primary cell base station among the fields included in any one of the information of the logical channel group information, priority information and logical channel identifier information. It may include field designation information or field extension information for identifying the carrier (s).
- a specific value is configured as a primary cell in the logical channel group field, which is composed of 2 bits and may have a value of 0 to 3.
- the macro cell or macro cell base station or macro cell base station CCs can be specified and used to distinguish.
- the distinguishing information when the distinguishing information is included in the priority information and the UE distinguishes the logical channel, for example, a macro cell configured as a primary cell having a specific value in a priority field which may have a value of 1 to 16 or
- the macro cell base station or macro cell base station CCs may be specified and used to distinguish, or the number of bits may be extended and a specific value may be specified and used to distinguish the macro cell or macro cell base station or macro cell base station CCs composed of primary cells. .
- a specific value of the logical channel identifiers 3 to 10 is referred to as a macro cell or a macro cell base station or a macro cell base station CC.
- a specific value of the logical channel identifiers 3 to 10 is referred to as a macro cell or a macro cell base station or a macro cell base station CC.
- logical channels 3 to 4 or 3 to 5 may be used as the macro cell base station logical channel identifier
- 5 to 10 or 6 to 10 may be used as the logical channel identifiers of the small cell or small cell base station or the small cell base station CC. have.
- a terminal may be any one of a cell identifier, primary cell indication information / secondary cell index, cell discrimination index information, and primary cell base station index (indication information) / secondary cell base station index (indication information).
- a logical channel of a radio bearer configured only through a specific cell or a specific base station or a specific base station cell (s) may be distinguished or may be distinguished using any one of a logical channel group, a priority value, and a logical channel identifier ( S520).
- the terminal may identify logical channels to be delivered through specific small cells or small cell base stations configured as secondary cells in the MAC layer or CCs of the small cell base station (eg, PCI) or secondary cell index or terminal. It can be distinguished using an index for distinguishing this cell or secondary cell base station index / indication information.
- small cell base station eg, PCI
- the terminal may belong to the same specific logical channel group (LCG) so that logical channels to be transmitted through CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell in the MAC layer. Can be distinguished.
- LCG logical channel group
- the terminal may distinguish logical channels to be delivered through CCs of a specific small cell or a small cell base station or a small cell base station configured as a secondary cell in the MAC layer so as to have a specific priority value.
- the UE may distinguish logical channels to be delivered through CCs of a specific small cell or a small cell base station or a small cell base station configured as a secondary cell in the MAC layer so as to have a specific logical channel identifier.
- the terminal may distinguish a logical channel to be transmitted through CCs of a specific small cell or small cell base station or small cell base station based on the discrimination information received from the first base station (primary cell base station 502) in the MAC layer ( S520).
- the UE In triggering a buffer status report (for example, "Regular BSR”, “Periodic BSR”, “Padding BSR”), the UE is a logical channel to be transmitted for each CCs of a small cell or small cell base station or small cell base station configured as a secondary cell.
- the buffer state or the buffer state of the logical channel group to which the logical channels belong may be triggered through a small cell consisting of each secondary cell or a small cell base station or CCs (Component Carriers) of the small cell (S525).
- the UE transmits an uplink buffer state for logical channels or logical channel groups to which the logical channels belong to the secondary cell to be delivered through CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell.
- the configured small cell or the small cell base station or the small cell base station may report through the CCs (S530).
- the terminal may distinguish logical channels to be transmitted through CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell using logical channel configuration information (for example, logical channel group, etc.) in the MAC layer. Can be. Accordingly, in triggering the buffer status report, the buffer status may be classified and triggered by the CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell. That is, in triggering the buffer status report, it is possible to trigger a buffer status report of the logical channel group to which logical channels or logical channels to be delivered through CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell.
- logical channel configuration information for example, logical channel group, etc.
- the terminal may identify logical channels to be delivered through a specific macro cell or macro cell base station configured as a primary cell or CCs of the macro cell base station (eg PCI) or macro cell indication information or terminal.
- This cell can be distinguished using an index or macro cell base station indication.
- the UE belongs to the same specific logical channel group (LCG) logical channels (logical channels) to be delivered through the specific macro cell or macro cell base station or macro cell base station CCs of the MAC layer in the MAC layer. Can be distinguished.
- LCG logical channel group
- the terminal may distinguish logical channels to be delivered through CCs of a specific macro cell or macro cell base station or macro cell base station configured as a primary cell so as to have a specific priority value.
- the UE may distinguish logical channels to be delivered through CCs of a specific macro cell or a macro cell base station or macro cell base station configured as a primary cell so as to have a specific logical channel identifier.
- the terminal may distinguish a logical channel to be transmitted through CCs of a specific macro cell or macro cell base station or macro cell base station based on the discrimination information received from the first base station (primary cell base station).
- a buffer status report for example, "Regular BSR”, “Periodic BSR”, “Padding BSR"
- a buffer state of channels or a buffer state of a logical channel group to which the logical channels belong may be distinguished and triggered through a macro cell composed of a primary cell or a macro cell base station or a component carrier (CCs) of a macro cell base station.
- CCs component carrier
- the UE is responsible for priming uplink buffer states for logical channels or logical channel groups to which the logical channels belong, which are to be delivered through a specific macro cell or macro cell base station configured as a primary cell or CCs of a macro cell base station.
- a specific macro cell or macro cell base station or macro cell base station configured as a head cell can be reported through.
- the UE uses the logical channel configuration information (for example, logical channel group) in the MAC layer to determine logical channels to be transmitted through macro cells or macro cell base stations configured as primary cells or CCs of macro cell base stations. Can be distinguished. Accordingly, in triggering the buffer status report, the buffer status may be classified and triggered by CCs of the macro cell or the macro cell base station or the macro cell base station configured as the primary cell. That is, in triggering a buffer status report, it is possible to trigger a buffer status report of a logical channel group or logical channels to which logical channels or logical channels to be delivered through CCs of a specific macro cell or macro cell base station or macro cell base station configured as a primary cell. .
- logical channel configuration information for example, logical channel group
- the buffer status may be classified and triggered by CCs of the macro cell or the macro cell base station or the macro cell base station configured as the primary cell. That is, in triggering a buffer status report, it is possible to trigger a buffer status report of a
- FIG. 6 is a view showing another example of the operation of the terminal and the base station according to another embodiment of the present invention.
- the terminal in the step of triggering the buffer status report, uplink sharing including event configuration information for triggering the buffer status report to the component carrier (s) of the second base station or secondary cell base station Receive the channel configuration information, determine the event occurrence according to the event configuration information can trigger the buffer status report.
- the terminal 601 receives radio resource configuration-specific information including discrimination information from the first base station (primary cell base station) 602 (S615).
- the terminal 601 When the terminal 601 receives radio resource configuration-only information including distinguishing information from the first base station (primary cell base station) 602, the terminal 601 reports the buffer status to the component carrier (s) of the second base station or the secondary cell base station.
- the uplink shared channel configuration information including the event configuration information for triggering may be received together (S615).
- the uplink shared channel configuration information described above may be generated through a procedure through an X2 interface between the first base station and the second base station. That is, the primary cell base station may receive necessary information by requesting necessary information through an interface with the secondary cell base station to be added or modified.
- the terminal 601 may classify the logical channels by the above-described method based on the distinguishing information (S620).
- the terminal 601 triggers a buffer status report (S630), and transmits a buffer status report of a logical channel classified as a component of the second base station 603 or a secondary cell (S640). ).
- the buffer status report may be triggered (S630).
- Uplink data is used for one logical channel belonging to one logical channel group (LCG) among the logical channels to be delivered through the CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell. It is available. And the data belongs to any one of the above logical channel groups and belongs to one logical channel having a higher priority than the priorities of the logical channels for the already available data, or to one logical channel group. No data is available for any of these. In this case, the UE sends a "Regular BSR" through the CCs of the small cell or the small cell base station or the small cell composed of the secondary cell.
- LCG logical channel group
- the terminal sends a "Padding BSR" through the CCs of the small cell or the small cell base station or the small cell base station consisting of a secondary cell.
- the UE When the periodic BSR-Timer expires, the UE sends a "Periodic BSR" through the CCs of the small cell or small cell base station or the small cell base station configured as the secondary cell.
- the above-described event configuration information (for example, retransmission BSR timer and periodic BSR timer information) may be included in uplink shared channel configuration information (ul-SCH-Config) of MAC main configuration information (MAC-MainConfig) of the RRC message. (S615).
- the event configuration information may be configured through different uplink shared channel configuration information for each CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell. This may enable operation independent of the primary cell base station.
- the event configuration information may have a primary cell (or primary cell base station) and a secondary cell (or secondary cell base station) having the same value (eg, the same ul-SCH-Config).
- One MAC Protocol Data Unit may include at most one MAC buffer status reporting control element (BSR control element).
- BSR control element MAC buffer status reporting control element
- the UL grant can accommodate all pending data to be delivered through CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell in this subframe, but additionally the buffer status reporting MAC If it is not sufficient to accommodate the addition of the control element to its subheads, it is associated with logical channels to be delivered through the CCs of the small cell or small cell base station or small cell base station composed of secondary cells. All triggered buffer status reports (BSRs) must be canceled.
- BSRs buffer status reports
- a buffer status report transmitted through CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell is included in a MAC PDU for transmission, the CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell are selected. All triggered buffer status reports passed through must be canceled.
- the terminal may perform an independent buffer status report for each base station.
- the terminal When the terminal configures a radio resource (DRB) through CCs of a small cell or a small cell base station or a small cell base station configured as a secondary cell and transmits a buffer status report, the terminal transmits a plurality of regular / regular within one transmission time interval (TTI).
- Periodic BSR can be transmitted.
- the UE may transmit at most one Regular / Periodic BSR within one TTI to the macrocell base station through the macro cell or macrocell base station configured as the primary cell or the CCs of the macrocell base station. That is, the terminal may transmit at most one Regular / Periodic BSR within one TTI for the macro cell base station or macro cell base station CCs.
- the UE may transmit at most one Regular / Periodic BSR within one transmission time interval (TTI) within a specific small cell base station for CCs of each small cell or small cell base station or small cell base station configured as a secondary cell. That is, the terminal may transmit at most one Regular / Periodic BSR within one transmission time interval (TTI) to the small cell base station through CCs of the small cell or small cell base station or small cell base station. If the terminal is requested to transmit a plurality of MAC PDUs in one TTI for each small cell or small cell base station or small cell CC configured as a secondary cell, the terminal may be assigned to any of the MAC PDUs that do not include Regular / Periodic BSR. It may include a padding BSR.
- the UE transmits at most one regular / periodic BSR within one transmission time interval (TTI).
- TTI transmission time interval
- the terminal transmits a buffer status report through the CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell
- the terminal is a macro consisting of the primary cell
- Any of the MAC PDUs not including the Regular / Periodic BSR to the cell base station may include the BSR of the small cell base station configured as the secondary cell.
- the terminal when the terminal configures a radio resource (DRB) through a small cell consisting of a secondary cell, a small cell base station, or a small cell, and transmits a buffer status report, the terminal may send using only the padding BSR.
- DRB radio resource
- FIG. 7 is a flowchart illustrating the operation of a terminal according to another embodiment of the present invention.
- a terminal forms a dual connection with a first base station and a second base station, and configures each base station with a first bearer and a second bearer.
- the buffer status report information of the specific bearer is transmitted to the first base station or the second base station to which the specific bearer belongs.
- the terminal receives radio resource configuration-specific information including discrimination information used to distinguish a logical channel from the first base station as described above (S710).
- the radio resource configuration only information may be included in higher layer signaling (eg, an RRC reconfiguration message) or may be received through higher layer signaling.
- the terminal may distinguish a specific logical channel transmitted through CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell based on the received discrimination information (S720).
- the terminal may identify logical channels to be transmitted through CCs of a specific small cell or a small cell base station or a small cell base station configured as a secondary cell in a MAC layer (eg, PCI) or secondary.
- the cell index or the terminal may distinguish using the index or the secondary cell base station index / indication for identifying the cell.
- the terminal may belong to the same specific logical channel group (LCG) so that logical channels to be transmitted through CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell in the MAC layer. Can be distinguished.
- LCG logical channel group
- the terminal may distinguish logical channels to be delivered through CCs of a specific small cell or a small cell base station or a small cell base station configured as a secondary cell in the MAC layer so as to have a specific priority value.
- the terminal may distinguish logical channels to be delivered through CCs of a specific small cell or a small cell base station or a small cell base station configured as a secondary cell in the MAC layer so as to have a specific logical channel identifier.
- the terminal is a small cell or small cell base station configured as a secondary cell or a small cell base station or CCs of a small cell base station to be delivered through CCs of a logical channel group or logical channel group and a primary cell or a macro cell or macro cell base station or CCs of a macro cell base station It is determined whether to trigger the buffer status report by distinguishing the logical channel (s) or logical channel group to be transmitted through (S730).
- Event configuration information (eg, retransmission BSR timer and periodic BSR timer information) may be included in uplink shared channel configuration information (ul-SCH-Config) of MAC main configuration information (MAC-MainConfig) of the RRC message.
- ul-SCH-Config uplink shared channel configuration information
- MAC-MainConfig MAC main configuration information
- the UE identifies a logical channel or a logical channel group to be mapped and delivered through the second base station or the second base station CCs and periodically retransmits a BSR timer for triggering the buffer status report.
- the BSR timer may be configured to be distinguished from a retransmission BSR timer and a periodic BSR timer for triggering a buffer status report by dividing logical channels or logical channel groups to be mapped and transmitted through the first base station or the first base station CCs.
- the event configuration information may be configured through different uplink shared channel configuration information for each CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell.
- the event configuration information may have the same value (for example, the same ul-SCH-Config) of the primary cell base station or the secondary cell base station.
- the terminal When the UE triggers a buffer status report on the logical channel (s) or logical channel group to be delivered through the CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell in the MAC layer, the terminal is the secondary cell base station (second The buffer status report is transmitted to the base station (S740).
- FIG. 8 is a diagram illustrating an example of a configuration of a MAC PDU (Protocol Data Unit) to which the present invention can be applied.
- MAC PDU Protocol Data Unit
- a MAC PDU includes one MAC header, zero or more MAC Service Data Units (SDUs), zero or more MAC control elements, and optionally includes padding. do.
- SDUs MAC Service Data Units
- the MAC PDU header consists of one or more MAC PDU subheaders 801. Each subheader 801 corresponds to one MAC SDU, one MAC control element or padding (A MAC PDU header consists of one or more MAC PDU subheaders; each subheader corresponds to either a MAC SDU, a MAC control element or padding).
- the Logical Channel ID (LCID) field included in the MAC header identifies the logical channel instance of the corresponding MAC SDU or the type of the corresponding MAC control element or padding.
- the LCID value for the UL-SCH may be set as shown in Table 1.
- FIG. 9 is a diagram illustrating a buffer status report MAC control element format to which the present invention can be applied.
- the format of the buffer status reporting MAC control elements is divided into a Short BSR / Truncated BSR format 900 and a Long BSR format 910, 920, and 930.
- the short BSR / Truncated BSR format 900 includes one logical channel group ID (LCG ID) field and one corresponding buffer size field as shown in FIG. 9.
- the logical channel group ID field is a field for identifying a logical channel group whose buffer status is to be reported, and may be 2 bits long.
- the Long BSR format 910, 920, and 930 is composed of four buffer size fields corresponding to LCG IDs # 0 to # 3 as shown in FIG.
- the above-described MAC control element format of FIG. 9 may be used.
- the terminal may transmit the above-described distinguishing information in the MAC subheader or the buffer status report control element.
- the terminal when the terminal includes the distinguishing information, when the terminal transmits the buffer status report, the format of the Short BSR control element and / or Long BSR control element (control element) described above cell identifier (eg For example, PCI) or secondary cell index or the terminal may include an index or secondary cell base station index / indication information for identifying the cell.
- cell identifier eg For example, PCI
- secondary cell index the terminal may include an index or secondary cell base station index / indication information for identifying the cell.
- the terminal may identify the cell identifier or secondary cell index described above in the MAC subheader corresponding to the Short BSR control element and / or the Long BSR control element, or the index or secondary for the terminal to distinguish the cell.
- Cell base station index / indication information may be transmitted. For example, a reserved bit or a format field or a new field may be defined and used.
- the Short BSR / Truncated BSR / Long BSR control element to transmit the Logical Channel ID (LCID) field value of the MAC subheader for the Short BSR / Truncated BSR / Long BSR control element to be transmitted through the secondary cell base station.
- LCID Logical Channel ID
- the BSR for the secondary cell base station can be distinguished by defining and using new values different from the LCID (Logical Channel ID) field value (short BSR: 11101, Truncated BSR: 11100, Long BSR: 11110) of the MAC subheader.
- LCID Logical Channel ID
- the terminal may transmit logical channels to be delivered through CCs of the specific small cell or small cell base station or the small cell base station described above in a Short BSR control element and / or Long BSR control element format. It can contain information that can distinguish logical channels).
- the discrimination information included may be at least one of the above-described logical channel group, a specific logical channel identifier, and a specific priority value.
- a terminal may apply a priority procedure for each component carrier of a second base station (secondary cell base station) or the secondary cell base station. That is, the UE may apply a priority procedure in configuring a MAC PDU by dividing logical channels or logical channel groups to be transmitted to a second base station (secondary cell base station) or component carriers of the secondary cell base station in the MAC layer. .
- the terminal after the above-mentioned step of separating the logical channels, performs a priority procedure by distinguishing the logical channels to be mapped and transmitted through the CCs of the first base station or the first base station and The method may further include classifying logical channels to be mapped and delivered through CCs of the second base station or the second base station and performing a priority procedure.
- the Logical Channel Prioritization (LCP) procedure is applied when the UE performs a new transmission.
- the LCP procedure determines the amount of data from each logical channel and MAC control element type to be included in the MAC PDU. Used to construct a MAC PDU.
- logical channels to be transmitted through the CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell are transmitted through the CCs of the small cell or the small cell base station configured to the secondary cell or the small cell base station.
- Mapping may be performed on channels (eg, UL-SCHs (Uplink Shared Channels)).
- a terminal divides logical channels for CCs of a small cell or a small cell base station or a small cell base station configured as a secondary cell in a MAC layer, and thus, logical channel priority (Logical Channel Prioritization).
- logical channel priority Logical Channel Prioritization
- the terminal classifies the CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell and allocates resources to logical channels belonging to the CCs of the specific small cell or the small cell base station or the small cell base station configured as the secondary cell in the following order: Can be assigned.
- the UE belongs to CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell in the MAC layer (or to be delivered through CCs of a specific small cell or small cell base station or small cell base station configured as a secondary cell). All logical channels that are zero may be allocated resources in a decresing priority order.
- the UE reduces Bj to the total size of MAC SDUs serviced in the logical channel of step 1).
- Bj is initialized to zero when the associated logical channel is set and is increased by the PBR * TTI period for each TTI.
- All logical channels may be serviced in a strict decreasing priority order until the data or uplink grant for the logical channel is exhausted.
- the UE of the present invention may perform a priority procedure by dividing logical channels through CCs of a small cell or a small cell base station or a small cell base station configured as a secondary cell. have. .
- the above-described priority procedure may be equally applied to the case where the UE maps logical channels of the primary cell base station to transport channels through the macro cell or macro cell base station or macro cell base station CCs configured as the primary cell.
- mapping may be performed to transport channels (eg, UL-SCHs (Uplink Shared Channels)) through CCs of the macro base station.
- UL-SCHs Uplink Shared Channels
- a terminal may perform a logical channel priority procedure by dividing logical channels for CCs of a macro cell or a macro cell base station or a macro cell base station configured as a primary cell. .
- the UE may allocate a resource to a macro cell or macro cell base station configured as a primary cell or a macro cell CC or logical cell belonging to a macro cell or macro cell base station configured to a primary cell or a macro cell CC in the following order.
- the terminal is all Bj> 0 belonging to the macro cell or macro cell base station or macro cell base station CCs consisting of the primary cell (or to be delivered through the CCs of a specific macro cell or macro cell base station or macro cell base station consisting of the primary cell) Resources may be allocated to logical channels in a decresing priority order.
- the UE reduces Bj to the total size of MAC SDUs serviced in the logical channel of step 1).
- Bj is initialized to zero when the associated logical channel is set and is increased by the PBR * TTI period for each TTI.
- any resource may be delivered through the CCs of a particular macro cell or macro cell base station or macro cell base station CCs composed of primary cells (or a specific macro cell or macro cell base station or macro cell base station composed of primary cells). All logical channels may be serviced in a strict decreasing priority order until the data or uplink grant for the logical channel is exhausted.
- the terminal of the present invention can perform a priority procedure by dividing logical channels through a macro cell or macro cell base station or macro cell base station CCs configured as a primary cell. have.
- LCP Logical Channel Prioritization
- FIG. 10 is a flowchart illustrating the operation of a base station according to another embodiment of the present invention.
- a first base station includes a radio bearer and a second base station or a second base station to be transmitted through CCs (Component Carriers) of the first base station or the first base station.
- CCs Component Carriers
- the first base station may configure a dual connection with the terminal together with the second base station connected by non-ideal backhaul.
- the first base station may provide a bearer to the terminal, the bearer provided to the terminal is a bearer that is distinct from the bearer provided to the terminal by the second base station.
- the first base station may receive a buffer status report of logical channels or logical channel groups to be mapped and transmitted through CCs of the first base station or the first base station.
- a buffer status report of logical channels or logical channel groups to be mapped and delivered through the second base station or the second base station CCs may be received.
- the first base station in the step of generating the discrimination information, report the buffer status by distinguishing the logical channel or logical channel group to be mapped and transferred through the second base station or the second base station CCs
- a retransmission BSR timer and a periodic BSR timer for triggering a buffer status report by dividing logical channels or logical channel groups to be transferred by mapping a retransmission BSR timer and a periodic BSR timer through the first base station or the first base station CCs It can be configured separately from.
- the first base station distinguishes the radio bearer to be transmitted through the CCs (Component Carriers) of the first base station or the first base station and the radio bearer to be transmitted through the CCs of the second base station or the second base station. It may be generated (S1010).
- CCs Component Carriers
- the generated discrimination information includes at least one of a cell identifier, a primary cell index, a secondary cell index, primary cell base station indication information, and secondary cell base station indication information, and may be added to radio bearer additional modification information or logical channel configuration information. May be included.
- CCs Component Carriers
- the first base station may include the generated distinguishing information in the radio resource configuration dedicated information and transmit it to the terminal (S1020).
- the distinguishing information may be transmitted by being included in the radio bearer additional modification information or logical channel configuration information, or may be transmitted by being included in each field of the logical channel configuration information.
- the radio resource configuration dedicated information may be transmitted to the terminal through higher layer signaling (eg, an RRC reconfiguration message).
- higher layer signaling eg, an RRC reconfiguration message
- the first base station may receive a buffer status report from the terminal, and in the present invention, the first base station (primary cell base station) is a logical channel or a logical channel group of logical channels to be mapped and transmitted through the second base station or the second base station CCs.
- a buffer status report of logical channels or logical channel groups to be mapped and transmitted through the CCs of the first base station or the first base station, which is different from the buffer status report, may be received (S1040).
- the first base station Before receiving the buffer status report from the terminal, the first base station provides event configuration information of the buffer status report of logical channels or logical channel groups to be mapped and transmitted through the second base station or the second base station CCs.
- the method may further include transmitting uplink shared channel configuration information including generating and event configuration information.
- the event configuration information (for example, retransmission BSR timer and periodic BSR timer information) is included in the uplink shared channel configuration information (ul-SCH-Config) of the MAC main configuration information (MAC-MainConfig) of the RRC message. Can be sent.
- the event configuration information may be transmitted to the terminal together with the above-described radio resource configuration dedicated information.
- the event configuration information may be configured through different uplink shared channel configuration information for each CCs of the small cell or the small cell base station or the small cell base station configured as the secondary cell.
- the event configuration information may have a primary cell (or primary cell base station) and a secondary cell (or secondary cell base station) having the same value (eg, the same ul-SCH-Config).
- FIG. 11 is a diagram illustrating an example of a hierarchical structure of a terminal according to another embodiment of the present invention.
- FIG. 11 is a diagram illustrating a Layer2 protocol structure of a terminal according to the present invention, wherein a PDCP entity and a second base station of a first base station (macro cell base station) to be transmitted through a macro cell base station in a radio bearer unit
- the PDCP entity of the second base station (small cell base station) to be transmitted through the small cell base station may be distinguished.
- FIG. 12 is a diagram illustrating another example of a hierarchical structure of a terminal according to another embodiment of the present invention.
- FIG. 12 illustrates in detail the Layer2 protocol structure of a terminal implemented according to another embodiment according to the present invention.
- a MAC layer entity and a second base station (small cell base station) for a first base station (macro cell base station) are shown.
- MAC layer entity for the can be separated.
- the terminal according to the present embodiment has a Scheduling / Priority Handling entity, a Multiplexing entity, a HARQ entity and a Scheduling / Priority Handling entity, a Multiplexing entity, and a HARQ entity for the first base station (macro cell base station), respectively. It may be.
- the MAC layer entity for the first base station may map logical channels to be delivered through the CCs of the first base station or the first base station to transport channels through the CCs of the first base station or the first base station.
- the MAC layer entity for the second base station may map logical channels to be delivered through the CCs of the second base station or the second base station to transport channels through the CCs of the second base station or the second base station.
- 11 and 12 according to the buffer status report transmission method of the present invention, a UE reports a buffer status report and a logical channel priority procedure for uplink data to be transmitted through CCs of a first base station or a first base station. May be performed separately from the buffer status report and the logical channel priority procedure for uplink data to be transmitted through CCs of the second base station or the second base station.
- FIG. 13 is a diagram illustrating another example of a hierarchical structure of a terminal according to another embodiment of the present invention.
- FIG. 13 is a diagram illustrating another example of a layer2 structure of a terminal according to the present invention, and illustrates in detail the layer2 protocol structure of the terminal implemented by a method different from those of FIGS. 11 and 12.
- an RLC layer (object) for the first base station and an RLC layer (object) for the second base station are separated and provided in duplicate.
- it may have a scheduling / priority handling entity for the first base station, a multiplexing entity, a HARQ entity, an RLC entity, and the aforementioned entities for the second base station, respectively.
- the PDCP layer may have an entity for separating and switching data into a first base station RLC layer and a second base station RLC layer.
- the terminal may transmit a second base station (small) to a radio bearer configured through a first base station (macrocell base station) and a second base station (small cell base station). Buffer status report) can be transmitted.
- FIG. 14 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.
- the first base station 1400 includes a controller 1410, a transmitter 1420, and a receiver 1430.
- the controller 1410 transmits a buffer status report of logical channels or logical channel groups to which a terminal necessary to perform the above-described present invention is mapped and transmitted through CCs of the first base station or the first base station, and the first base station, Controls the overall operation of the base station according to the classification and transmission of the buffer status report of the logical channels or logical channel group to be mapped and transferred through the second base station or the second base station CCs.
- the controller 1410 may configure a dual connection with the second base station with respect to the terminal and control the overall operation of the base station required for setting up the radio bearer.
- the controller 1410 may generate discrimination information for distinguishing a radio bearer to be transmitted through CCs (Component Carriers) of the first base station or the first base station and a radio bearer to be transmitted through CCs of the second base station or the second base station. Can be.
- CCs Component Carriers
- the controller 1410 may identify distinguishing information for distinguishing a radio bearer to be transmitted through CCs (Component Carriers) of the first base station or the first base station and a radio bearer to be transmitted through CCs of the second base station or the second base station. Or a second base station (secondary cell base station) or the above-described event configuration information.
- the transmitter 1420 and the receiver 1430 control transmission and reception.
- the transmitter 1420 and the receiver 1430 are used to transmit and receive signals, messages, and data necessary for carrying out the above-described present invention.
- the transmitter 1420 may transmit radio resource configuration exclusive information including discrimination information or uplink shared channel configuration information including event configuration information.
- the receiver 1430 may receive a buffer status report from the terminal, and the buffer status report is different from the buffer status report of logical channels or logical channel groups to be mapped and transmitted through the second base station or the second base station CCs.
- 15 is a diagram illustrating a configuration of a user terminal according to another embodiment of the present invention.
- a user terminal 1500 includes a receiver 1510, a controller 1520, and a transmitter 1530.
- the controller 1520 transmits a buffer status report of logical channels or logical channel groups to be mapped and delivered through the CCs of the first base station or the first base station to the first base station, and the second base station in order to perform the above-described present invention. Or it controls the overall operation of the terminal according to the classification and transmission of the buffer status report of the logical channels or logical channel group to be mapped and transmitted through the second base station CCs.
- the controller 1520 may configure a dual connection with the first base station and the second base station and control the overall operation of the terminal required for establishing a radio bearer.
- the controller 1520 may distinguish logical channels to be mapped and transmitted through CCs of the first base station or the first base station in the MAC layer, and logical channels to be mapped and transmitted through the second base station or the second base station CCs, and Buffer status of logical channels or logical channel group to be mapped and delivered through CCs of one base station or first base station and logical channels or logical channel group to be mapped and delivered through second or second base station CCs You can control the overall behavior of triggering status reporting.
- the controller 1520 performs a priority procedure by dividing the logical channels to be mapped and delivered through the CCs of the first base station or the first base station, and the logic to be mapped and delivered through the CCs of the second base station or the second base station.
- the priority procedure may be performed by dividing channels.
- the controller 1520 may include a MAC entity for logical channels to be mapped and delivered through CCs of the first base station or the first base station and a MAC entity for logical channels to be mapped and delivered through CCs of the second base station or the second base station. Can be configured separately.
- the controller 1520 may identify a logical channel or a logical channel group to be mapped and transmitted through the second base station or the second base station CCs, and may include a retransmission BSR timer and a periodic BSR timer for triggering a buffer status report.
- Logical channels or logical channel groups to be mapped and transmitted through the first base station CCs may be distinguished from a retransmission BSR timer and a periodic BSR timer for triggering a buffer status report.
- the receiver 1510 receives downlink control information, data, and a message from a base station through a corresponding channel.
- the receiver 1510 distinguishes a radio bearer to be transmitted from a first base station through CCs (Component Carriers) of a first base station or a first base station and a radio bearer to be transmitted through CCs of a second base station or a second base station.
- the radio resource configuration exclusive information including the distinguishing information can be received.
- the distinguishing information may be included in the RRC reconfiguration message.
- uplink shared channel configuration information including event configuration information for triggering a buffer status report by dividing CCs of the second base station or the second base station may be received.
- the transmitter 1530 transmits uplink control information, data, and a message to a base station through a corresponding channel.
- the transmitter 1530 transmits a buffer status report of logical channels or logical channel groups to be mapped and transmitted through CCs of the first base station or the first base station to the first base station, and the second base station or the second base station.
- a buffer status report of logical channels or logical channel groups to be mapped and delivered through CCs may be transmitted to the second base station.
- the present invention provides a mobile communication network in which the macro cell and the small cell have a separate base station through a non-ideal backhaul through a small cell (or through cooperation between the macro cell and the small cell) under the control of the macro cell.
- the UE may perform a buffer status report and a logical channel priority (LCP) procedure for each small cell or small cell base station or small cell CC configured as a secondary cell.
- LCP logical channel priority
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (20)
- 비이상적인 백홀로 연결된 제 1 기지국 및 제 2 기지국과 이중 연결을 구성하는 단말이 버퍼상태보고를 전송하는 방법에 있어서,상기 제 1 기지국으로부터 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs(Component Carriers)를 통해 전달될 무선베어러와 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 전달될 무선베어러를 구분하는 구별정보를 포함하는 RRC 재구성 메시지를 수신하는 단계;MAC 계층에서 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들과 상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들을 구분하는 단계;상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태와 상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹을 구분하여 버퍼상태보고를 트리거하는 단계; 및상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태보고를 상기 제 1 기지국으로 전송하고, 상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태보고를 상기 제 2 기지국으로 전송하는 단계를 포함하는 방법.
- 제 1항에 있어서,상기 논리채널들을 구분하는 단계 이후,상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들을 구분하여 우선순위 프로시져를 수행하고, 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 매핑되어 전달될 논리채널들을 구분하여 우선순위 프로시져를 수행하는 단계를 더 포함하는 방법.
- 제 1항에 있어서,상기 논리채널들을 구분하는 단계는,상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들을 위한 MAC 개체 및 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 매핑되어 전달될 논리채널들을 위한 MAC 개체를 구분하여 구성하는 것을 특징으로 하는 방법.
- 제 1항에 있어서,상기 구별정보는,셀 식별자, 프라이머리 셀 인덱스, 세컨더리 셀 인덱스, 프라이머리 셀 기지국 표시 정보 및 세컨더리 셀 기지국 표시정보 중 적어도 하나의 정보를 포함하며, 무선베어러 추가수정 정보 또는 논리채널구성 정보에 포함되는 방법.
- 제 1항에 있어서,상기 구별정보는,논리채널그룹 정보, 우선순위 정보 및 논리채널식별자 정보 중 어느 하나의 정보에 포함된 필드에 상기 제 1 기지국으로부터 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs(Component Carriers)를 통해 전달될 무선베어러와 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 전달될 무선베어러를 구분하기 위한 필드 지정 값 또는 필드 확장 정보를 포함하는 방법.
- 제 1항에 있어서,상기 버퍼상태 보고를 트리거하는 단계에 있어서,상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹을 구분하여 버퍼상태보고를 트리거하기 위한 재전송 BSR 타이머와 주기적 BSR 타이머를 상기 제 1 기지국 또는 상기 제 1 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹을 구분하여 버퍼상태보고를 트리거하기 위한 재전송 BSR 타이머와 주기적 BSR 타이머와 구분하여 구성하는 것을 특징으로 하는 방법.
- 제 1항에 있어서,상기 버퍼상태보고를 전송하는 단계에 있어서 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 하나의 TTI(Transmission time interval) 내에 최대 하나의 Regular BSR 또는 Periodic BSR을 전송하고, 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 하나의 TTI(Transmission time interval) 내에 최대 하나의 Regular BSR 또는 Periodic BSR을 전송하는 것을 특징으로 하는 방법
- 제 1 기지국이 단말의 버퍼상태보고를 제어하는 방법에 있어서,상기 제 1 기지국 또는 상기 제 1 기지국의 CCs(Component Carriers)를 통해 전달될 무선베어러와 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 전달될 무선베어러를 구분하는 구별정보를 생성하는 단계;상기 구별정보를 포함하는 RRC 재구성 메시지를 상기 단말로 전송하는 단계; 및상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태보고와는 구분되는, 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태보고를 수신하는 단계를 포함하는 방법.
- 제 8항에 있어서,상기 구별정보는,셀 식별자, 프라이머리 셀 인덱스, 세컨더리 셀 인덱스, 프라이머리 셀 기지국 표시 정보 및 세컨더리 셀 기지국 표시정보 중 적어도 하나의 정보를 포함하며, 무선베어러 추가수정 정보 또는 논리채널구성 정보에 포함되는 방법.
- 제 8항에 있어서,상기 구별정보는,논리채널그룹 정보, 우선순위 정보 및 논리채널식별자 정보 중 어느 하나의 정보에 포함된 필드에 상기 제 1 기지국으로부터 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs(Component Carriers)를 통해 전달될 무선베어러와 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 전달될 무선베어러를 구분하기 위한 필드 지정 값 또는 필드 확장 정보를 포함하는 방법.
- 제 8항에 있어서,상기 구별정보를 생성하는 단계에 있어서,상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹을 구분하여 버퍼상태보고를 트리거하기 위한 재전송 BSR 타이머와 주기적 BSR 타이머를 상기 제 1 기지국 또는 상기 제 1 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹을 구분하여 버퍼상태보고를 트리거하기 위한 재전송 BSR 타이머와 주기적 BSR 타이머와 구분하여 구성하는 것 을 특징으로 하는 방법.
- 비이상적인 백홀로 연결된 제 1 기지국 및 제 2 기지국과 이중 연결을 구성하여 버퍼상태보고를 전송하는 단말에 있어서,상기 제 1 기지국으로부터 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs(Component Carriers)를 통해 전달될 무선베어러와 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 전달될 무선베어러를 구분하는 구별정보를 포함하는 RRC 재구성 메시지를 수신하는 수신부;MAC 계층에서 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들과 상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들을 구분하고,상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태와 상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹을 구분하여 버퍼상태보고를 트리거하는 제어부; 및상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태보고를 상기 제 1 기지국으로 전송하고, 상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태보고를 상기 제 2 기지국으로 전송하는 송신부를 포함하는 단말.
- 제 12항에 있어서,상기 제어부는,상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들을 구분하여 우선순위 프로시져를 수행하고, 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 매핑되어 전달될 논리채널들을 구분하여 우선순위 프로시져를 더 수행하는 것을 특징으로 하는 단말..
- 제 12항에 있어서,상기 제어부는,상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들을 위한 MAC 개체 및 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 매핑되어 전달될 논리채널들을 위한 MAC 개체를 구분하여 구성하는 것을 특징으로 하는 단말.
- 제 12항에 있어서,상기 구별정보는,셀 식별자, 프라이머리 셀 인덱스, 세컨더리 셀 인덱스, 프라이머리 셀 기지국 표시 정보 및 세컨더리 셀 기지국 표시정보 중 적어도 하나의 정보를 포함하며, 무선베어러 추가수정 정보 또는 논리채널구성 정보에 포함되는 단말.
- 제 12항에 있어서,상기 구별정보는,논리채널그룹 정보, 우선순위 정보 및 논리채널식별자 정보 중 어느 하나의 정보에 포함된 필드에 상기 제 1 기지국으로부터 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs(Component Carriers)를 통해 전달될 무선베어러와 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 전달될 무선베어러를 구분하기 위한 필드 지정 값 또는 필드 확장 정보를 포함하는 단말.
- 제 12항에 있어서,상기 제어부는,상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹을 구분하여 버퍼상태보고를 트리거하기 위한 재전송 BSR 타이머와 주기적 BSR 타이머를 상기 제 1 기지국 또는 상기 제 1 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹을 구분하여 버퍼상태보고를 트리거하기 위한 재전송 BSR 타이머와 주기적 BSR 타이머와 구분하여 구성하는 것을 특징으로 하는 단말.
- 단말의 버퍼상태보고를 제어하는 제 1 기지국에 있어서,상기 제 1 기지국 또는 상기 제 1 기지국의 CCs(Component Carriers)를 통해 전달될 무선베어러와 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 전달될 무선베어러를 구분하는 구별정보를 생성하는 제어부;상기 구별정보를 포함하는 RRC 재구성 메시지를 상기 단말로 전송하는 송신부; 및상기 제 2 기지국 또는 상기 제 2 기지국 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태보고와는 구분되는, 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs를 통해 매핑되어 전달될 논리채널들 또는 논리채널 그룹의 버퍼상태보고를 수신하는 수신부를 포함하는 기지국.
- 제 18항에 있어서,상기 구별정보는,셀 식별자, 프라이머리 셀 인덱스, 세컨더리 셀 인덱스, 프라이머리 셀 기지국 표시 정보 및 세컨더리 셀 기지국 표시정보 중 적어도 하나의 정보를 포함하며, 무선베어 추가수정 정보 또는 논리채널구성 정보에 포함되는 기지국.
- 제 18항에 있어서,상기 구별정보는,논리채널그룹 정보, 우선순위 정보 및 논리채널식별자 정보 중 어느 하나의 정보에 포함된 필드에 상기 제 1 기지국으로부터 상기 제 1 기지국 또는 상기 제 1 기지국의 CCs(Component Carriers)를 통해 전달될 무선베어러와 상기 제 2 기지국 또는 상기 제 2 기지국의 CCs를 통해 전달될 무선베어러를 구분하기 위한 필드 지정 값 또는 필드 확장 정보를 포함하는 기지국.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/770,607 US11832125B2 (en) | 2013-02-27 | 2014-02-11 | Method for transmitting buffer status report of terminal in small cell environment and device therefor |
| CN201480011021.1A CN105432028B (zh) | 2013-02-27 | 2014-02-11 | 小小区环境中终端的缓存状态报告传输方法及其装置 |
| US18/500,562 US12335775B2 (en) | 2013-02-27 | 2023-11-02 | Method for transmitting buffer status report of terminal in small cell environment and device therefor |
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2013-0021563 | 2013-02-27 | ||
| KR20130021563 | 2013-02-27 | ||
| KR1020130129039A KR20140107088A (ko) | 2013-02-27 | 2013-10-29 | 스몰셀 환경에서 단말의 버퍼상태보고 전송방법 및 장치 |
| KR10-2013-0129039 | 2013-10-29 | ||
| KR1020140015508A KR101656248B1 (ko) | 2013-02-27 | 2014-02-11 | 스몰셀 환경에서 단말의 버퍼상태보고 전송 방법 및 그 장치 |
| KR10-2014-0015508 | 2014-02-11 |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US14/770,607 A-371-Of-International US11832125B2 (en) | 2013-02-27 | 2014-02-11 | Method for transmitting buffer status report of terminal in small cell environment and device therefor |
| US18/500,562 Continuation US12335775B2 (en) | 2013-02-27 | 2023-11-02 | Method for transmitting buffer status report of terminal in small cell environment and device therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2014133271A1 true WO2014133271A1 (ko) | 2014-09-04 |
Family
ID=51428493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2014/001124 Ceased WO2014133271A1 (ko) | 2013-02-27 | 2014-02-11 | 스몰셀 환경에서 단말의 버퍼상태보고 전송 방법 및 그 장치 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US12335775B2 (ko) |
| WO (1) | WO2014133271A1 (ko) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109246833A (zh) * | 2017-05-04 | 2019-01-18 | 中兴通讯股份有限公司 | 承载配置确定、信息发送方法及装置、主基站和辅基站 |
| WO2019050293A1 (en) * | 2017-09-06 | 2019-03-14 | Lg Electronics Inc. | RESOURCE MANAGEMENT IN A WIRELESS COMMUNICATION SYSTEM |
| GB2570134A (en) * | 2018-01-11 | 2019-07-17 | Tcl Communication Ltd | Enhancements to PDCP packet duplication |
| CN110547009A (zh) * | 2017-04-27 | 2019-12-06 | Oppo广东移动通信有限公司 | 无线通信方法和设备 |
| CN112292900A (zh) * | 2018-06-21 | 2021-01-29 | 上海诺基亚贝尔股份有限公司 | 用于有限业务混合的优化bsr |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115190473A (zh) * | 2021-04-02 | 2022-10-14 | 大唐移动通信设备有限公司 | 一种去激活辅节点sn波束失败的处理方法及装置 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100098011A1 (en) * | 2008-10-17 | 2010-04-22 | Ghyslain Pelletier | Method and Mobile Terminal Providing Priority-Based Uplink Scheduling Infomation |
| EP2398274A1 (en) * | 2010-06-18 | 2011-12-21 | Acer Incorporated | Method of performing buffer status reporting and communication device thereof |
| US20120291666A1 (en) * | 2005-03-09 | 2012-11-22 | Idaho Research Foundation | Compositions comprising supercritical carbon dioxide and metallic compounds, and methods of increasing the solubility of materials in supercritical carbon dioxide |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2740990A1 (en) | 2008-10-17 | 2010-04-22 | Thomas Hemmerling | Automatic control system and method for the control of anesthesia |
| EP2237633A1 (en) * | 2009-04-03 | 2010-10-06 | Panasonic Corporation | Buffer status reporting in a mobile communication system |
| US8254410B2 (en) | 2009-04-30 | 2012-08-28 | Telefonaktiebolaget L M Ericsson (Publ) | Systems and methods for transmitting radio link control (RLC) data blocks |
| CN102088433B (zh) * | 2009-12-08 | 2015-01-28 | 中兴通讯股份有限公司 | 多载波系统中分量载波激活去激活的优化方法和系统 |
| US8737255B2 (en) | 2010-03-08 | 2014-05-27 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and arrangements for redistributing resources for use in a radio communication system |
| EP2553963B1 (en) * | 2010-04-02 | 2020-07-22 | InterDigital Patent Holdings, Inc. | Method and apparatus for supporting communication via a relay node |
| TWI555419B (zh) * | 2010-04-02 | 2016-10-21 | 聯發科技股份有限公司 | 管理多成分載波、緩存器狀態報告以及功率餘裕回報方法 |
| US8982805B2 (en) * | 2010-04-09 | 2015-03-17 | Acer Incorporated | Activating component carriers by non-contention based random access procedure |
| EP2398273B1 (en) | 2010-06-18 | 2018-02-14 | Acer Incorporated | Method of handling buffer status report and communication device thereof |
| FI3319395T3 (fi) * | 2010-12-03 | 2023-08-01 | Interdigital Patent Holdings Inc | Menetelmä ja laite moniradioliityntätekniikan kantoaaltojen yhdistämisen suorittamiseksi |
| CN102655682B (zh) | 2011-03-03 | 2016-12-07 | 华为技术有限公司 | 一种采用载波汇聚方式传输数据的方法、系统及装置 |
| US9838089B2 (en) * | 2011-10-07 | 2017-12-05 | Futurewei Technologies, Inc. | System and method for multiple point transmission in a communications system |
| US9806873B2 (en) | 2012-05-09 | 2017-10-31 | Samsung Electronics Co., Ltd. | Method and apparatus for controlling discontinuous reception in mobile communication system |
| US8913518B2 (en) * | 2012-08-03 | 2014-12-16 | Intel Corporation | Enhanced node B, user equipment and methods for discontinuous reception in inter-ENB carrier aggregation |
| CN104823177B (zh) | 2012-09-28 | 2018-02-06 | 黑莓有限公司 | 用于在lte异构网络中实现进一步l1增强的方法和装置 |
-
2014
- 2014-02-11 WO PCT/KR2014/001124 patent/WO2014133271A1/ko not_active Ceased
-
2023
- 2023-11-02 US US18/500,562 patent/US12335775B2/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120291666A1 (en) * | 2005-03-09 | 2012-11-22 | Idaho Research Foundation | Compositions comprising supercritical carbon dioxide and metallic compounds, and methods of increasing the solubility of materials in supercritical carbon dioxide |
| US20100098011A1 (en) * | 2008-10-17 | 2010-04-22 | Ghyslain Pelletier | Method and Mobile Terminal Providing Priority-Based Uplink Scheduling Infomation |
| EP2398274A1 (en) * | 2010-06-18 | 2011-12-21 | Acer Incorporated | Method of performing buffer status reporting and communication device thereof |
Non-Patent Citations (2)
| Title |
|---|
| HUAWEI ET AL.: "Feasible scenarios and benefits of dual connectivity in small cell", 3GPP TSG-RAN WG2 #81, 28 January 2013 (2013-01-28), ST. JULIAN'S, MALTA, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/wg2_rl2/TSGR2_81/Docs> * |
| NTT DOCOMO INC.: "Discussion on U-plane architecture for dual connectivity", 3GPP TSG-RAN WG2 #81, 28 January 2013 (2013-01-28), ST. JULIAN'S. MALTA, Retrieved from the Internet <URL:http://www.3gpp.org/ftp/tsg_ran/wg2_rl2/TSGR2_81/Docs> * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110547009A (zh) * | 2017-04-27 | 2019-12-06 | Oppo广东移动通信有限公司 | 无线通信方法和设备 |
| CN110547009B (zh) * | 2017-04-27 | 2024-02-23 | Oppo广东移动通信有限公司 | 无线通信方法和设备 |
| CN109246833A (zh) * | 2017-05-04 | 2019-01-18 | 中兴通讯股份有限公司 | 承载配置确定、信息发送方法及装置、主基站和辅基站 |
| CN109246833B (zh) * | 2017-05-04 | 2024-02-06 | 中兴通讯股份有限公司 | 承载配置确定、信息发送方法及装置、主基站和辅基站 |
| WO2019050293A1 (en) * | 2017-09-06 | 2019-03-14 | Lg Electronics Inc. | RESOURCE MANAGEMENT IN A WIRELESS COMMUNICATION SYSTEM |
| US10524232B2 (en) | 2017-09-06 | 2019-12-31 | Lg Electronics Inc. | Resource management in a wireless communication system |
| US11102759B2 (en) | 2017-09-06 | 2021-08-24 | Lg Electronics Inc. | Resource management in a wireless communication system |
| GB2570134A (en) * | 2018-01-11 | 2019-07-17 | Tcl Communication Ltd | Enhancements to PDCP packet duplication |
| CN112292900A (zh) * | 2018-06-21 | 2021-01-29 | 上海诺基亚贝尔股份有限公司 | 用于有限业务混合的优化bsr |
Also Published As
| Publication number | Publication date |
|---|---|
| US12335775B2 (en) | 2025-06-17 |
| US20240089793A1 (en) | 2024-03-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019160342A1 (en) | Method and apparatus for supporting rach-less mobility with pre-allocated beams in wireless communication system | |
| WO2022031098A1 (en) | Method and device for changing serving entity | |
| WO2019216617A1 (en) | Method and apparatus for triggering transmission carrier selection in wireless communication system | |
| WO2019156528A1 (en) | Method and apparatus for deprioritizing packet transmission based on reliability level or congestion level in wireless communication system | |
| WO2019098663A1 (en) | Method and apparatus for deprioritizing duplicated packet transmission in wireless communication system | |
| WO2018231022A1 (en) | Method for supporting multiple scheduling requests in next-generation mobile communication system | |
| WO2015064972A1 (ko) | 이동통신망에서 이중 연결을 구성하기 위한 방법 및 그 장치 | |
| WO2011053055A2 (en) | Apparatus and method for transmitting/receiving activation indicator regarding component carrier in wireless communication system | |
| WO2020027491A1 (ko) | 릴레이 노드에서 데이터를 처리하는 방법 및 그 장치 | |
| WO2015020356A1 (ko) | 단말 간 직접 통신에서 버퍼상태보고 전송 방법 및 그 장치 | |
| WO2011122834A2 (ko) | 무선 통신 시스템에서 랜덤 액세스를 수행하는 장치 및 방법 | |
| WO2018164499A1 (ko) | 버퍼 상태 리포트 전송 방법 및 그 장치 | |
| WO2024071768A1 (en) | Node, user equipment in wireless communication system and method performed by the same | |
| WO2021251559A1 (ko) | Nwdaf의 기능을 개선하여 smf가 중복 전송을 효과적으로 하기 위한 방안 | |
| WO2018169242A1 (ko) | 제어 메시지 중복수신 방법 및 장치 | |
| WO2023211049A1 (ko) | 패킷 데이터 처리 제어 방법 및 장치 | |
| WO2020159168A1 (en) | Method for data replication, data counting method, corresponding entities and media | |
| WO2014133271A1 (ko) | 스몰셀 환경에서 단말의 버퍼상태보고 전송 방법 및 그 장치 | |
| WO2015046780A1 (ko) | 업링크 데이터 전송 방법 및 그 장치 | |
| WO2019059638A1 (ko) | 릴레이 노드의 데이터 처리 방법 및 그 장치 | |
| WO2015152554A1 (ko) | 단말의 세컨더리 셀 동작 제어 방법 및 그 장치 | |
| WO2014157888A1 (ko) | 복수의 기지국과 연결된 상황에서의 핸드오버 방법 및 그 장치 | |
| WO2022019353A1 (en) | Method and apparatus for resource restriction | |
| WO2014163419A1 (ko) | 무선링크실패 처리 방법 및 그 장치 | |
| WO2016159634A1 (ko) | 무선 베어러 재구성 방법 및 그 장치 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 201480011021.1 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14756248 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 14770607 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 32PN | Ep: public notification in the ep bulletin as address of the adressee cannot be established |
Free format text: NOTING OF LOSS OF RIGHTS PURSUANT TO RULE 112(1) EPC (EPO FORM 1205A DATED 14.12.2015) |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 14756248 Country of ref document: EP Kind code of ref document: A1 |



