WO2016111498A1 - 단일 셀 멀티전송 데이터를 송수신하는 방법 및 그 장치 - Google Patents
단일 셀 멀티전송 데이터를 송수신하는 방법 및 그 장치 Download PDFInfo
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- WO2016111498A1 WO2016111498A1 PCT/KR2015/014479 KR2015014479W WO2016111498A1 WO 2016111498 A1 WO2016111498 A1 WO 2016111498A1 KR 2015014479 W KR2015014479 W KR 2015014479W WO 2016111498 A1 WO2016111498 A1 WO 2016111498A1
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- single cell
- information
- rnti
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- transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/08—User group management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
Definitions
- the present invention relates to a technique for transmitting and receiving multi-transmission data in a single cell. More specifically, the present invention relates to a method and apparatus for providing point-to-multipoint transmission within a single cell in a mobile communication network.
- GCSE Group Communication System Enablers
- a group of UEs used a multimedia broadcast multicast service (MBMS) to receive group communication.
- MBMS multimedia broadcast multicast service
- MBMS is designed to provide media content for mobile TV, etc. in large pre-planned areas (eg MBSFN area).
- MBSFN area is somewhat static. Also, it cannot be dynamically adjusted according to the user distribution.
- MBMS transmission occupies the entire system bandwidth, and unicast and multiplexing are not allowed in the same subframe even if all radio resources are not used in the frequency domain.
- MBMS occupies the entire system bandwidth and cannot be dynamically adjusted according to the number of groups or the traffic load of the groups in terms of static. This provides a problem that the base station is inefficient when transmitting group communication data to a plurality of terminals.
- the present invention devised in the above-described background proposes a method and apparatus for dynamically transmitting and receiving data through a PDSCH when transmitting and receiving multi-transmission data to a group consisting of multiple terminals in a single cell.
- the present invention is to propose a method and apparatus capable of transmitting and receiving multi-transmission data through the PDSCH while minimizing the interruption of the group communication service caused by the inter-cell movement of the terminal.
- the present invention is a method for receiving a single cell multi-transmission data in a terminal, the method comprising the steps of receiving system information for single-cell multi-transmission in a primary cell (PCell); And determining whether to transmit an MBMS interest information message and transmitting an MBMS interest information message, wherein the MBMS interest information message is transmitted when the UE establishes an RRC connection or when the UE last transmitted.
- a method is determined that is to be sent when interest group communication service information of an interest information message is changed.
- the present invention provides a method for transmitting a single cell multi-transmission data by the base station, the step of transmitting system information for single-cell multi-transmission in a primary cell (PCell) and the MBMS (Multimedia Broadcast Multicast Service) from the terminal
- a method of receiving a message of interest information comprising: receiving an interest information message, wherein the MBMS interest information message is received when the terminal establishes an RRC connection or when the interest group communication service information of a previous interest information message transmitted by the terminal is changed. do.
- the present invention provides a terminal for receiving single-cell multi-transmission data, the receiver for receiving system information for single-cell multi-transmission in the primary cell (PCell) and MBMS (Multimedia Broadcast Multicast Service) interest information message And a transmitter for transmitting the MBMS interest information message, wherein the controller is configured to change the interest group communication service information of the previous interest information message last transmitted by the terminal when the terminal establishes an RRC connection. Provides the terminal device to determine when to send the MBMS interest information message.
- PCell primary cell
- MBMS Multimedia Broadcast Multicast Service
- the present invention is a base station for transmitting single-cell multi-transmission data, MBMS (Multimedia Broadcast Multicast Service) interest from the transmitter and the terminal for transmitting system information for single-cell multi-transmission in the primary cell (PCell) And a receiving unit for receiving an information message, wherein the MBMS interest information message provides a base station apparatus that is received when the terminal establishes an RRC connection or when the interest group communication service information of a previous interest information message transmitted by the terminal is changed.
- MBMS Multimedia Broadcast Multicast Service
- the present invention provides an effect of enabling efficient use of radio resources by dynamically transmitting and receiving multi-transmission data to a group consisting of multiple terminals in a single cell through the PDSCH.
- the present invention provides an effect that can transmit and receive multi-transmission data through the PDSCH while minimizing the interruption of the group communication service caused by the inter-cell movement of the terminal.
- 1 shows a mapping between downlink transport channels and downlink physical channels.
- FIG 3 shows a layer 2 structure for the downlink with carrier aggregation configuration.
- FIG. 4 is a view for explaining the operation of the terminal according to an embodiment of the present invention.
- FIG. 5 is a view for explaining the operation of the terminal according to another embodiment of the present invention.
- FIG. 6 is a view for explaining the operation of the terminal according to another embodiment of the present invention.
- FIG. 7 is a diagram illustrating a layer 2 structure for the downlink including a single cell multi-transmission by way of example.
- FIG. 8 is a view for explaining the operation of the base station according to an embodiment of the present invention.
- FIG. 9 is a view for explaining the operation of the base station according to another embodiment of the present invention.
- FIG. 10 is a view for explaining the operation of the base station according to another embodiment of the present invention.
- FIG. 11 is a diagram illustrating a configuration of a terminal according to another embodiment of the present invention.
- FIG. 12 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.
- the MTC terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement.
- the MTC terminal may mean a terminal supporting low cost (or low complexity) and coverage enhancement.
- the MTC terminal may mean a terminal defined in a specific category for supporting low cost (or low complexity) and / or coverage enhancement.
- the MTC terminal may mean a newly defined 3GPP Release 13 low cost (or low complexity) UE category / type for performing LTE-based MTC related operations.
- the MTC terminal supports enhanced coverage compared to the existing LTE coverage, or UE category / type defined in the existing 3GPP Release 12 or lower, or newly defined Release 13 low cost (or low complexity) supporting low power consumption. ) May mean a UE category / type.
- the wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data, and the like.
- the wireless communication system includes a user equipment (UE) and a base station (base station, BS, or eNB).
- a user terminal is a generic concept meaning a terminal in wireless communication.
- user equipment (UE) in WCDMA, LTE, and HSPA, as well as mobile station (MS) in GSM, user terminal (UT), and SS It should be interpreted as a concept that includes a subscriber station, a wireless device, and the like.
- a base station or a cell generally refers to a station that communicates with a user terminal, and includes a Node-B, an evolved Node-B, an Sector, a Site, and a BTS.
- Other terms such as a base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell may be called.
- RRH remote radio head
- RU radio unit
- a base station or a cell is a generic meaning indicating some areas or functions covered by a base station controller (BSC) in CDMA, a Node-B in WCDMA, an eNB or a sector (site) in LTE, and the like. It should be interpreted as, and it is meant to cover all the various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, small cell communication range.
- BSC base station controller
- the base station may be interpreted in two senses. i) the device providing the megacell, the macrocell, the microcell, the picocell, the femtocell, the small cell in relation to the wireless area, or ii) the wireless area itself. In i) all devices which provide a given wireless area are controlled by the same entity or interact with each other to cooperatively configure the wireless area to direct the base station.
- the base station may indicate the radio area itself to receive or transmit a signal from the viewpoint of the user terminal or the position of a neighboring base station.
- megacells macrocells, microcells, picocells, femtocells, small cells, RRHs, antennas, RUs, low power nodes (LPNs), points, eNBs, transmit / receive points, transmit points, and receive points are collectively referred to as base stations. do.
- the user terminal and the base station are two transmitting and receiving entities used to implement the technology or technical idea described in this specification in a comprehensive sense and are not limited by the terms or words specifically referred to.
- the user terminal and the base station are two types of uplink or downlink transmitting / receiving subjects used to implement the technology or the technical idea described in the present invention, and are used in a generic sense and are not limited by the terms or words specifically referred to.
- the uplink (Uplink, UL, or uplink) refers to a method for transmitting and receiving data to the base station by the user terminal
- the downlink (Downlink, DL, or downlink) means to transmit and receive data to the user terminal by the base station It means the way.
- CDMA Code Division Multiple Access
- TDMA Time Division Multiple Access
- FDMA Frequency Division Multiple Access
- OFDMA Orthogonal Frequency Division Multiple Access
- OFDM-FDMA OFDM-TDMA
- UMB Universal Mobile Broadband
- the uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, or may use a frequency division duplex (FDD) scheme that is transmitted using different frequencies.
- TDD time division duplex
- FDD frequency division duplex
- a standard is configured by configuring uplink and downlink based on one carrier or a pair of carriers.
- the uplink and the downlink include a Physical Downlink Control CHannel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel (PHICH), a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control CHannel (EPDCCH), and the like.
- Control information is transmitted through the same control channel, and data is configured by a data channel such as a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH).
- PDSCH physical downlink shared channel
- PUSCH physical uplink shared channel
- control information may also be transmitted using an enhanced PDCCH (EPDCCH or extended PDCCH).
- EPDCCH enhanced PDCCH
- extended PDCCH extended PDCCH
- a cell means a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and the transmission / reception point itself. Can be.
- a wireless communication system to which embodiments are applied may be a coordinated multi-point transmission / reception system (CoMP system) or a coordinated multi-antenna transmission scheme in which two or more transmission / reception points cooperate to transmit a signal.
- antenna transmission system a cooperative multi-cell communication system.
- the CoMP system may include at least two multiple transmission / reception points and terminals.
- the multiple transmit / receive point is at least one having a base station or a macro cell (hereinafter referred to as an eNB) and a high transmission power or a low transmission power in a macro cell region, which is wired controlled by an optical cable or an optical fiber to the eNB. May be RRH.
- an eNB a base station or a macro cell
- a high transmission power or a low transmission power in a macro cell region which is wired controlled by an optical cable or an optical fiber to the eNB. May be RRH.
- downlink refers to a communication or communication path from a multiple transmission / reception point to a terminal
- uplink refers to a communication or communication path from a terminal to multiple transmission / reception points.
- a transmitter may be part of multiple transmission / reception points, and a receiver may be part of a terminal.
- a transmitter may be part of a terminal, and a receiver may be part of multiple transmission / reception points.
- a situation in which a signal is transmitted and received through a channel such as a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH may be expressed in the form of 'sending and receiving a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH.
- a description of transmitting or receiving a PDCCH or transmitting or receiving a signal through the PDCCH may be used as a meaning including transmitting or receiving an EPDCCH or transmitting or receiving a signal through the EPDCCH.
- the physical downlink control channel described below may mean PDCCH or EPDCCH, and may also be used to include both PDCCH and EPDCCH.
- the EPDCCH which is an embodiment of the present invention, may be applied to the portion described as the PDCCH, and the EPDCCH may be applied to the portion described as the EPDCCH as an embodiment of the present invention.
- high layer signaling described below includes RRC signaling for transmitting RRC information including an RRC parameter.
- the eNB performs downlink transmission to the terminals.
- the eNB includes downlink control information and an uplink data channel (eg, a physical downlink shared channel (PDSCH), which is a primary physical channel for unicast transmission, and scheduling required to receive the PDSCH.
- a physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission on a physical uplink shared channel (PUSCH) may be transmitted.
- PUSCH physical uplink shared channel
- a method and apparatus for transmitting and receiving single cell multi-transmission data of the present invention is a method and apparatus for transmitting and receiving single cell multi-transmission data of the present invention.
- group terminals have to use static domain or static radio resource configuration in order to receive group communication data (downlink multicast or groupcast) using MBMS.
- group communication data downlink multicast or groupcast
- it may be considered to receive the same downlink data through the PDSCH in a multicast manner, but a specific procedure for receiving downlink data through the PDSCH is not provided.
- the method of receiving downlink group communication data through the PDSCH may occur independently in each cell, so that continuity of services cannot be guaranteed when a cell change occurs due to the movement of the UE.
- the present invention devised to solve this problem provides a method and apparatus for receiving downlink group communication data via PDSCH.
- the present invention provides a method and apparatus capable of receiving group communication data through a PDSCH while minimizing service interruption according to an inter-cell movement.
- the current PDSCH physical channel could be used only for carrying a DL-SCH and a PCH transport channel.
- the DL-SCH transport channel may be transmitted by mapping BCCH, CCCH, DCCH, DTCH logical channels.
- PCCH is used to send paging information and system information change notification. For example, in order to receive a paging of an idle mode terminal, when the terminal wakes up to a corresponding paging occasion (occasion) and detects the P-RNTI transmitted on the PDCCH addressing the paging message, the terminal is transmitted on the PCH A process for receiving a downlink paging message may be performed.
- BCCH is used for broadcasting system control information.
- MIB master information block
- SIB system information block
- SI message system information message
- the mapping of SIBs other than SIB1 to system information messages is flexible and indicated by SIB1.
- the UE must acquire SIB1 to know how other SIBs are scheduled.
- Each SIB is included in a single SI message, and the single SI message may include a plurality of SIBs having the same period.
- the scheduling of SI messages is dynamic.
- SI messages can be transmitted within a periodic time window called SI-window. Each SI message is associated with one SI-window, and the other SI messages are broadcast on another SI-window that does not overlap.
- SIB1 and SI messages are broadcast on the DL-SCH
- the PDCCH associated with the DL-SCH uses a single SI-RNTI to address SIB1 and all SI messages in one cell.
- the UE decodes the SI-RNTI on the PDCCH in the SI-window to obtain detailed scheduling of system information in the corresponding SI-window.
- the CCCH is used to transmit control information associated with random access of UEs without RRC connection. Since the MAC HARQ retransmission may be performed on the RRC message on the CCCH, duplicate reception may occur.
- DCCH is a point-to-point channel used to transmit dedicated control information of terminals having an RRC connection.
- the DTCH is a point-to-point channel dedicated to a terminal used for transmitting user information.
- the terminal receives a downlink assignment through the PDCCH masked with the C-RNTI of the terminal.
- the downlink assignment indicates HARQ information and information about radio resources on the assigned PDSCH.
- FIG. 3 shows a layer 2 structure for DL with CA configured with carrier aggregation (CA) configuration.
- CA carrier aggregation
- the PDSCH may be used to receive dedicated information about a specific terminal and common information about a specific terminal.
- a terminal specific identifier eg, C-RNTI, etc.
- the PDSCH may be used to receive paging information, common information, etc. for all or group UEs, and for this purpose, a common group identifier (eg, P-RNTI, SI-RNTI, etc.) is required.
- E-UTRAN uses FFFE as the P-RNTI value and FFFF as the SI-RNTI value.
- transmitting data through the shared PDSCH radio resources for UEs included in a specific group in one cell will be described as single cell multi-transmission, and the UE included in a specific group in one cell.
- the downlink multicast, group cast, or group communication data transmitted through the shared PDSCH radio resources will be described as single cell multitransmission data.
- the communication mode for transmitting and receiving data through single cell multi-transmission will be described by group communication.
- group identifier information (Group-RNTI, G-RNTI).
- group identifier information (Group-RNTI, G-RNTI).
- a service provided to terminals through group communication is called a group communication service, and information for distinguishing each group communication service, group communication session, or group communication bearer is referred to as a group mobile service identity (TMGI). It is described and described.
- TMGI group mobile service identity
- a terminal interested in group communication, a terminal interested in group communication through single cell multi-transmission, or a terminal capable of multi-cell multi-transmission will be collectively described as a terminal interested in group communication.
- the terminal needs information for identifying a single cell multi-transmission control message transmitted by the base station, it is described as single cell identification information (Single Cell-RNTI, SC-RNTI), the terminal uses the SC-RNTI Single cell multi-transmission control information can be identified.
- the single cell multitransmission control message includes control information for single cell multitransmission.
- a terminal interested in group communication may know group communication service identification information (TMGI) for identifying a specific group communication service of interest through an application server (eg, GCS AS or BM-SC). Or, TMGI may be preconfigured for identifying specific group communication services of interest in the terminal.
- TMGI group communication service identification information
- MBMS or single cell multi-transmission or unicast bearer may be used for downlink transmission for the group communication service.
- unicast bearer can be used for uplink transmission.
- a preset MBMS bearer may be used between the Broadcast / Multicast Service Center (BM-SC) and the base stations for group communication service / session / bearer setup.
- the MBMS bearer may be configured and used between the BM-SC and the base stations through an Activate MBMS Bearer procedure at the request of a GCS Group Communication Service Application Server (AS).
- AS GCS Group Communication Service Application Server
- TMGI for downlink MBMS bearer service identification for group communication and session ID (MBMS Session Identity) to distinguish each MBMS session, MBSFN area identification information and downlink service / session / bearer of group communication service / session / bearer
- EPS Evolved Packet System
- the terminal may be connected to a GCS application server (GCS AS), or an EPS object controlling group communication, or an EPS object controlling registration (or authentication or confirmation). You can register.
- GCS AS GCS application server
- the TMGI for downlink MBMS bearer service identification for group communication and a session ID (MBMS Session Identity) for distinguishing each MBMS session, MBSFN area identification information, or group identifier information for group communication are preset in the terminal. It may be.
- the EPS entity controlling GCS AS or group communication decides to provide downlink transmission for group communication via MBMS in certain cells, then the EPS entity or registration (or authentication or confirmation) controlling the GCS AS or group communication is determined.
- the controlling EPS entity may initiate an MBMS session with the base stations via the BM-SC.
- the base station allocates G-RNTI to provide a specific group communication service through single cell multitransmission.
- G-RNTI may be associated with TMGI.
- the G-RNTI may be associated with a TMGI and / or MBMS session ID.
- the G-RNTI may be associated with a downlink service of the group communication service.
- the G-RNTI may be associated with identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer.
- FIG. 4 is a view for explaining the operation of the terminal according to an embodiment of the present invention.
- a terminal In a method for receiving a single cell multi-transmission data, a terminal according to an embodiment of the present invention, receiving system information for single-cell multi-transmission from a primary cell (PCell) and MBMS (Multimedia Broadcast Multicast) Service) determining whether or not to transmit the interest information message and transmitting the MBMS interest information message.
- PCell primary cell
- MBMS Multimedia Broadcast Multicast
- the terminal includes receiving system information for single cell multi-transmission in a primary cell (PCell) (S410).
- the base station transmits system information for single cell multi-transmission through a PCell configured in the terminal, and the terminal may receive it.
- the base station may broadcast single cell multitransmission related information through system information.
- the base station may broadcast the G-RNTI through system information.
- the base station can broadcast the G-RNTI associated with the TMGI, TMGI through the system information.
- the base station may broadcast identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer and the G-RNTI associated with it through the system information.
- the base station may broadcast information for receiving single cell multi-transmission control information including the G-RNTI through the system information.
- the base station may broadcast information for receiving single cell multi-transmission control information including TMGI and G-RNTI associated with TMGI through system information.
- the base station through the system information, the identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer, the information for receiving the single-cell multi-transmission control information including the associated G-RNTI Can be broadcast.
- the terminal may recognize using group identifier information (G-RNTI) for group communication.
- G-RNTI group identifier information
- the terminal includes a step of determining whether to transmit a multimedia broadcast multicast service (MBMS) interest information message (S420).
- MBMS multimedia broadcast multicast service
- the UE may determine that the MBMS Interest Information message is transmitted when establishing the RRC connection.
- the UE may determine that the MBMS interest information message is transmitted when the interest group communication service information of the last or most recently transmitted previous interest information message is changed.
- the MBMS interest information message may include information on the group communication service of interest to the terminal.
- the MBMS interest information message may include a group communication service of interest to the terminal in the form of a list.
- the MBMS Interest Information Message may include at least one group communication service identification (TMGI).
- TMGI group communication service identification
- the UE may determine the transmission of the MBMS interest information message when establishing an RRC connection with the corresponding cell or when the list of the interested group communication service transmitted to the base station is changed.
- the terminal includes the step of transmitting the MBMS interest information message (S430).
- the terminal may transmit the MBMS interest information message to the base station.
- the MBMS interest information message may be transmitted as being included in a new field in an existing RRC message such as an MBMSInterestIndication message or a UE assistance message.
- the MBMS interest information message may be transmitted through a newly defined RRC message.
- the base station may control the group communication transmission through the single cell multi-transmission through the MBMS interest information message received from one or more terminals. For example, the base station may use the information included in the MBMS interest information message to start or end a single cell multi-transmission. As another example, the base station may trigger an Activate MBMS Bearer procedure to the GCS AS using information included in the MBMS Interest Information message. As another example, the base station may trigger to start the MBMS service / session / bearer with the BM-SC using the MBMS Interest Information message. As another example, the base station may trigger to start a group communication service / session / bearer to the BM-SC using the MBMS interest information message. For another example, the base station may select a target cell providing single cell multi-transmission based on the MBMS interest message of the terminal.
- the terminal of the present invention may receive system information for single cell multi-transmission and transmit an MBMS Interest Information message including information on the group communication service of interest to the base station.
- the base station can control the single cell multi-transmission to the terminal, it is possible to check the existence of the terminal in the single-cell multi-transmission, the number and the traffic information of the terminal.
- the present invention provides operations of a specific terminal and a base station necessary for dynamically transmitting single cell multi-transmission data through a PDSCH radio resource for a specific group that is a base station.
- Figure 5 describes a specific operation for receiving the single cell multi-transmission data through the PDSCH radio resources of the terminal.
- FIG. 5 is a view for explaining the operation of the terminal according to another embodiment of the present invention.
- the terminal of the present invention receives a single cell multi-transmission control message using single cell-RNTI (SC-RNTI) for identifying single cell multi-transmission control information and group identifier information (Group-RNTI).
- SC-RNTI single cell-RNTI
- Group-RNTI group identifier information
- the method may further include receiving single cell multi-transmission data using G-RNTI.
- the UE receives system information for single cell multi-transmission in the primary cell (S510) and determines whether to transmit the MBMS interest information message.
- the MBMS interest information message may be transmitted in operation S530.
- the terminal may transmit information on the group communication service of interest to the current terminal to the base station.
- the terminal may receive a single cell multi-transmission control message using single cell identification information (Single Cell-RNTI, SC-RNTI) for identifying the single cell multi-transmission control information (S540).
- the terminal needs to receive a single cell multi-transmission control message in order to receive the single cell multi-transmission data received through the PDSCH radio resource.
- the terminal may confirm that the message received using the SC-RNTI is a single cell multitransmission control message including single cell multitransmission control information.
- the single cell multi-transmission control message may include at least one of group communication service identification information (TMGI) and group identifier information (G-RNTI). Meanwhile, the G-RNTI may be set in association with the group communication service identification information. Through this, the terminal may check the group communication service identification information or the group identifier information.
- TMGI group communication service identification information
- G-RNTI group identifier information
- the terminal may receive single cell multi-transmission data using the group identifier information (G-RNTI) (S550).
- G-RNTI group identifier information
- the UE may receive single cell multitransmission data through the PDSCH radio resource.
- Other terminals in the same group as the corresponding terminal may also receive single cell multi-transmission data through the shared PDSCH radio resource, and the terminal may receive the single-cell multi-transmission data through the PDSCH radio resource for the aforementioned PDSCH.
- Scheduling information may be received through the PDCCH region.
- the terminal may determine whether the corresponding single cell multitransmission data is for the group communication service of interest by using the allocated G-RNTI.
- the single cell multi-transmission control message and the single cell multi-transmission data described above may be scheduled through the PDCCH.
- the scheduling information of the single cell multi-transmission control message and the single cell multi-transmission data can be confirmed through the PDCCH region.
- the terminal may check and receive scheduling information of the single cell multi-transmission control message through indication information of the PDCCH region.
- the terminal may check and receive scheduling information on the PDSCH radio resource of the single cell multi-transmission data through the indication information of the PDCCH region.
- FIG. 6 is a view for explaining the operation of the terminal according to another embodiment of the present invention.
- a terminal receives system information for single cell multi-transmission in a primary cell and single cell identification information for identifying single cell multi-transmission control information (Single Cell-RNTI, SC-). Receiving a single cell multi-transmission control message using RNTI) and receiving single cell multi-transmission data using group identifier information (Group-RNTI, G-RNTI).
- the terminal may include receiving system information for single cell multi-transmission in the primary cell (S610).
- the base station transmits system information for single cell multi-transmission through the PCell configured in the terminal, the terminal may receive it.
- the base station may broadcast single cell multitransmission related information through system information.
- the base station may broadcast the G-RNTI through system information.
- the base station can broadcast the G-RNTI associated with the TMGI, TMGI through the system information.
- the base station may broadcast identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer and the G-RNTI associated with it through the system information.
- the base station may broadcast information for receiving single cell multi-transmission control information including the G-RNTI through the system information.
- the base station may broadcast information for receiving single cell multi-transmission control information including TMGI and G-RNTI associated with TMGI through system information.
- the base station through the system information, the identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer, the information for receiving the single-cell multi-transmission control information including the associated G-RNTI Can be broadcast.
- the terminal may recognize using the group identifier information (G-RNTI) according to the group communication service.
- G-RNTI group identifier information
- the terminal may include receiving a single cell multi-transmission control message using single cell identification information (SC-RNTI) for identifying the single cell multi-transmission control information (S620).
- SC-RNTI single cell identification information
- the terminal needs to receive a single cell multi-transmission control message in order to receive the single cell multi-transmission data received through the PDSCH radio resource.
- the terminal may confirm that the message received using the SC-RNTI is a single cell multitransmission control message including single cell multitransmission control information.
- the single cell multi-transmission control message may include at least one of group communication service identification information (TMGI) and group identifier information (G-RNTI). Meanwhile, the G-RNTI may be set in association with the group communication service identification information. Through this, the terminal may check the group communication service identification information or the group identifier information associated with the single cell multi-transmission control message.
- TMGI group communication service identification information
- G-RNTI group identifier information
- the terminal may include receiving the single cell multi-transmission data using group identifier information (Group-RNTI, G-RNTI) (S630).
- group identifier information Group-RNTI, G-RNTI
- the UE may receive single cell multitransmission data through the PDSCH radio resource.
- Other terminals in the same group as the corresponding terminal may also receive single cell multi-transmission data through the shared PDSCH radio resource, and the terminal may receive the single-cell multi-transmission data through the PDSCH radio resource for the aforementioned PDSCH.
- Scheduling information may be received through the PDCCH region.
- the terminal may determine whether the corresponding single cell multitransmission data is for the group communication service of interest by using the allocated G-RNTI.
- the single cell multi-transmission control message and the single cell multi-transmission data described above may be scheduled through the PDCCH.
- the scheduling information of the single cell multi-transmission control message and the single cell multi-transmission data can be confirmed through the PDCCH region.
- the terminal may check and receive scheduling information of the single cell multi-transmission control message through indication information of the PDCCH region.
- the terminal may check and receive scheduling information on the PDSCH radio resource of the single cell multi-transmission data through the indication information of the PDCCH region.
- the base station may broadcast single cell multitransmission related information through the system information.
- the base station may broadcast a G-RNTI.
- the base station may broadcast a TM-GI and a G-RNTI associated with the TMGI.
- the base station may broadcast identification information for identifying a downlink service / session / bearer of a group communication service / session / bearer and a G-RNTI associated with it.
- the base station may broadcast information for receiving single cell multi-transmission control information including the G-RNTI.
- the base station may broadcast information for receiving single cell multi-transmission control information including TMGI and G-RNTI associated with TMGI.
- the base station provides information for receiving single cell multi-transmission control information including identification information for identifying a downlink service / session / bearer of a group communication service / session / bearer and associated G-RNTI. Can broadcast. Accordingly, the terminal interested in the group communication may know the G-RNTI for the group communication service.
- Scenario 1 Moving from a cell that supports single cell multitransmission to a cell that does not support single cell multitransmission
- the terminal While in the source cell, the terminal is based on the control information associated with the single cell multi-transmission related system information of the neighboring cell or the single cell multi-transmission related system information or the control information that can determine whether the single cell multi-transmission of the neighboring cell It is possible to check whether single cell multi-transmission of the neighboring cell to be moved is supported.
- the terminal may request service through unicast while receiving the service through single-cell multi-transmission in the source cell.
- a service through unicast may be requested directly through a GCS AS.
- a service through unicast may be requested through a GCS AS.
- the end-to-end delay for media delivery using unicast bearers is around 40ms.
- the end-to-end delay for media delivery via MBMS MRB is 160ms. Therefore, in order to provide service continuity, even if the neighbor cell to which the UE is to move does not support single cell multi-transmission, even if the neighbor cell supports MBMS (or group communication through MBMS or MBSFN providing the same service) First, requesting service through unicast can reduce service interruption. Thereafter, after moving to the target cell, group communication can be received through the MBMS.
- the terminal may experience a short service interruption.
- the source cell or the source base station
- the target base station when the target cell / base station receives the group communication data transmitted through the BM-SC (or GCS AS or any group communication data transmission entity) through the source cell / base station, the target base station can deliver it to the terminal.
- the target base station may transmit corresponding data through single cell multitransmission.
- the G-RNTI may be received from the source base station in the handover preparation message.
- a tunnel for data forwarding for the corresponding data may be established.
- the target base station may transmit the corresponding data through the data radio bearer of the terminal.
- a tunnel for data forwarding for the corresponding data may be established.
- Scenario 2 Moving from a single cell multitransmit transport cell to a single cell multitransmit transport cell
- the terminal While the terminal is in the source cell, the terminal is based on control information associated with single cell multi-transmission related system information of the neighboring cell or single cell multi-transmission related system information or control information capable of confirming whether the single cell multi-transmission of the neighboring cell is determined.
- This neighbor cell to be moved can be checked whether the single cell multi-transmission support.
- handover to a cell through single cell multi-transmission may be efficient in terms of a network.
- the base station may not know that the terminal is receiving a group communication service through single cell multitransmission.
- single cell multi-transmission may not receive HARQ like MBMS, and thus may not receive HARQ feedback or CSI report.
- HARQ feedback or CSI report is allowed for single cell multi-transmission, when the feedback is performed without discriminating the terminal, the single-cell multi-transmission reception state of a specific terminal may not be distinguished.
- the PCell to which the UE connects the RRC may transmit system information for single cell multi-transmission.
- the terminal may indicate an interest in this.
- the terminal may transmit the MBMS interest information message to the base station to indicate the interest in the single cell multi-transmission.
- a terminal interested in group communication may transmit an MBMS interest information message.
- a terminal interested in group communication may transmit an MBMS Interest Information message when entering or leaving a current single cell multi-transmission cell.
- a terminal interested in group communication may transmit an MBMS interest information message at the beginning or end of a session.
- a UE interested in group communication may transmit an MBMS Interest Information message when a single cell multi-transmission related system information change occurs.
- a terminal interested in group communication may transmit an MBMS interest information message when a change of interest group communication service to be received through single cell multi-transmission occurs.
- a UE interested in group communication may transmit an MBMS Interest Information message when a TMGI change to be received through a single cell multitransmission occurs.
- a terminal interested in group communication may transmit an MBMS interest information message when it wants to receive a group communication service different from a previous interest information message that the terminal last transmitted.
- single cell multi-transmission can operate independently even for a cell / base station using the same frequency.
- / or a single cell multi-transmission region may be configured regardless of frequency.
- the terminal may include at least one TMGI in the aforementioned MBMS interest information message.
- the TMGI is identification information of a group communication service of which the terminal is interested, and the terminal may transmit the group communication service of interest in a list form.
- the terminal may include a G-RNTI in the aforementioned MBMS interest information message.
- the terminal may include identification information for identifying the corresponding group communication service / session / bearer received through the system information or preconfigured in the terminal in the aforementioned MBMS interest information message.
- the terminal may include relative priority information on the group communication service / session / bearer.
- the terminal may include absolute priority information for each group communication service / session / bearer.
- the MBMS interest information message described above may be provided by including a new field in an existing RRC message such as an "MBMSInterestIndication message" or a "UE assistance message” or may be provided through a new RRC message.
- the base station may control the group communication transmission through the single cell multi-transmission based on the MBMS interest information message received from the terminals. For example, single cell multi-transmission can be initiated or terminated. For another example, the base station may trigger an Activate MBMS Bearer procedure with a GCS AS. For another example, the base station may trigger to start the MBMS service / session / bearer with the BM-SC. In another example, the base station may trigger to start a group communication service / session / bearer with the BM-SC. For another example, the base station may select a target cell providing single cell multi-transmission based on the MBMS interest message of the terminal.
- handover may be performed according to the movement of the terminal.
- the source base station may forward the MBMS interest information message received from the terminal to the target base station if possible.
- the UE can read system information related to single cell multitransmission.
- the terminal After the handover transmits the aforementioned MBMS interest information message to the base station. Can be indicated.
- the above-described MBMS interest information message may be delivered in the AS-Context information of the "HandoverPreparationInformation message".
- the target cell / base station that receives the MBMS interest information message including the interested group communication service information of interest from the source cell / base station does not support single cell multi-transmission or does not provide the group communication service of interest to the terminal; If not, the target cell / base station may transfer information about it to the source cell / base station.
- the target base station may include information for indicating that the single cell multitransmission is not supported in the handover response X2 message or the handoverCommand Inter-node RRC message. .
- the target cell / base station may transmit unsupported information to the source base station by using the handover response X2 message.
- the target cell / base station includes information for instructing unsupported in the "handoverCommand Inter-node RRC message" or information for instructing the terminal to request service through unicast to the GCS AS through the terminal through the source base station. Can be delivered to.
- the source cell / base station may not support single cell multi-transmission or may not determine handover to a target base station that does not provide a group communication service of interest to the terminal.
- the terminal may request a service through unicast through the GCS AS.
- the source cell / base station may forward the data delivered via the BM-SC (or GCS AS or any group communication data transmission entity) to the target cell / base station.
- BM-SC or GCS AS or any group communication data transmission entity
- the source base station may forward the group communication data to the target base station.
- the target cell / base station may forward the group communication data to the target base station.
- the target cell / base station may forward the group communication data to the target base station.
- the source base station may forward the group communication data to the target base station.
- the source base station may forward the group communication data to the target base station.
- the target cell / base station receives group communication data transmitted through the BM-SC (or GCS AS or any group communication data transmission entity) through the source cell / base station, the source base station transmits the group communication data to the target base station. You can forward it.
- the BM-SC or GCS AS or any group communication data transmission entity
- the target cell / base station can deliver the group communication data forwarded through the source cell / base station to the terminal.
- the target cell / base station may transmit corresponding data through single cell multitransmission.
- the G-RNTI may be received from the source base station in the aforementioned handover preparation message.
- a tunnel for data forwarding for the corresponding data may be established.
- the target base station may transmit the corresponding data through the data radio bearer of the terminal.
- a tunnel for data forwarding for the corresponding data may be established.
- the terminal may request and receive the group communication service / session / bearer data through the BM-SC or GCS AS. .
- the terminal may request and receive the group communication service / session / bearer data through the BM-SC or the GCS AS when the target cell / base station does not support single cell multi-transmission.
- the terminal may request and receive the group communication service / session / bearer data through the BM-SC or GCS AS when the target cell / base station does not provide corresponding interest group communication through single cell multi-transmission.
- the source base station may not forward the downlink RLC SDU whose transmission is completed in the source cell to the target base station. Or, untransmitted RLC SDUs may not be forwarded. Alternatively, the source base station may forward fresh downlink data arriving via the BM-SC or GCS AS.
- the terminal while in the source cell, the terminal through the single cell multi-transmission related system information to be broadcasted through the above-mentioned single cell multi-transmission information or neighboring system information of the neighboring cell / base stations If the neighbor cell to be moved does not support single cell multi-transmission, it can request a service through unicast through the GCS AS.
- information related to single cell multi-transmission for a specific group communication service / session / bearer of a neighbor cell / base station may be transmitted through X2 signaling (for example, X2 Setup and eNB Configuration Update procedures) and / or OAM (Operation, Administration and Maintenance). Can be provided through.
- a base station that receives control information associated with single cell multi-transmission related system information of a neighboring cell or single cell multi-transmission related system information or control information capable of confirming whether a single cell multi-transmission of a neighboring cell is received is determined by the system information within a cell or a cell. It is possible to support the service continuity of the data receiving terminal through the single cell multi-transmission by broadcasting the information related to the single cell multi-transmission of the neighbor cells / base stations through the control information associated with the system information. For example, the single cell to be broadcasted through the single cell multi-transmission related information of the neighboring cell / base station or the control information linked to the system information in the cell to be broadcasted through the system information in the cell.
- the multi-transmission related information may include one or more of cell identification information, group identifier information (TMGI), G-RNTI, and identification information for identifying a group communication service / session / bearer.
- a terminal interested in group communication may avoid reading single cell multi-transmission related system information or related control information (eg, single cell control information) at neighbor cells or neighbor frequencies through the above-described information. Can be.
- a terminal interested in group communication may recognize which group communication service is provided through the above information.
- a terminal interested in group communication or a terminal receiving group communication through single cell multi-transmission may know physical layer cell identification information (PhysCellId) of a neighboring cell through a cell search.
- the physical layer cell identification information may have one value of 0 to 503 for each cell.
- the terminal may determine whether the neighboring cell supports single cell multicasting. Therefore, the terminal can be unnecessarily read single cell multi-transmission related system information of the neighbor cell.
- a base station may transmit a single cell multitransmission (eg TMGI or G-RNTI) for a specific group communication service in a serving cell and cell identification information (eg, physical layer cell identification information) of neighboring cells providing the same. ) Can be broadcast mapping information.
- the UE may know whether the neighbor cell provides single cell multi-transmission for a specific group communication service through physical layer cell identification information obtained during the cell search for the neighbor cell.
- the terminal of the present invention can determine whether the serving cell or the neighbor cell supports single cell multitransmission using system information for single cell multitransmission.
- the terminal may receive system information for single cell multi-transmission and check the information on the single cell multi-transmission group communication service that the serving cell or the neighbor cell can provide.
- the terminal may transmit the MBMS interest information message to the base station to transmit the information on the group communication service of interest to the base station.
- the terminal receives the single cell multi-transmission control message and transmits the single cell multi-transmission data to the interested group communication service through the PDSCH radio resource. Can be provided.
- a terminal of the present invention receives single cell multitransmission data for a group communication service of interest through a PDSCH radio resource will be described.
- the terminal may receive a single cell multitransmission control message in order to receive single cell multitransmission data.
- the single cell multi-transmission control message may include at least one of group communication service identification information (TMGI) and group identifier information (G-RNTI).
- TMGI group communication service identification information
- G-RNTI group identifier information
- the group identifier information may be set in association with the group communication service identification information.
- the terminal may receive single cell multi-transmission data transmitted through the PDSCH radio resource using the group identifier information (G-RNTI).
- G-RNTI may be carried on the PDCCH.
- the above-described G-RNTI may be used among the FFF4-FFFCs, which are currently reserved RNTI values.
- G-RNTI may be used among 0001-003C or 003D-FFF3.
- the base station allocates the G-RNTI to the BM-SC or GCS AS through coordination. Can be assigned or selected. Through this, other base stations or other cells may have an effect of allocating a G-RNTI for a specific group communication service / session / bearer without collision.
- each base station allocates the G-RNTI independently to provide a specific group communication service / session / bearer, and then independently allocates the collision. In the case of coordination, it can be assigned or selected.
- the base station may allocate or select the G-RNTI through coordination between the base stations when allocating the G-RNTI to provide a specific group communication service / session / bearer. X2 signaling may be set for this.
- the base station assigns the G-RNTI to provide a specific group communication service / session / bearer
- the base station assigns a Temporary Mobile Group Identity (TMGI) associated with the G-RNTI.
- TMGI Temporary Mobile Group Identity
- the terminal may also calculate and use a G-RNTI based on a preconfigured TMGI or received through an application server (eg, a GCS AS or a BM-SC).
- the G-RNTI is allocated and used among a plurality of values
- the base station allocates the G-RNTI to provide a specific group communication service / session / bearer
- the specific group communication service / session / bearer is associated with it. It may be calculated and allocated based on the identification information for identifying the.
- the terminal may also calculate a G-RNTI based on identification information for identifying a specific group communication service / session / bearer received or pre-configured through an application server (eg, a GCS AS or a BM-SC). It is available.
- an application server eg, a GCS AS or a BM-SC
- the base station uses one RNTI to broadcast single cell multi-transmission control information including the G-RNTI of a specific group communication service / session / bearer to the terminal.
- SC-RNTI can be specified.
- the terminal may receive the single cell multi-transmission control information including the G-RNTI of a specific group communication service / session / bearer through the designated single cell identification information (eg, SC-RNTI) described above.
- the UE may be configured to recognize the G-RNTI associated with a specific group communication service / session / bearer through the aforementioned single cell multitransmission control information indicated through the aforementioned single cell identification information (SC-RNTI) on the PDCCH.
- the terminal may receive the scheduling information of the single cell multi-transmission control information through the PDCCH masked with the aforementioned single cell identification information (eg, SC-RNTI).
- single cell multi-transmission control information including G-RNTI associated with a specific group communication service / session / bearer can be received.
- the base station may change only single cell multi-transmission control information and broadcast the changed single cell multi-transmission control information to the terminal. Therefore, it is not necessary to change the system information in case of creation / change / release of a specific group communication service.
- the terminal may receive scheduling information of the group communication data through the masked PDCCH with the G-RNTI for the group communication of interest.
- the aforementioned scheduling information may indicate information about radio resources on the allocated PDSCH.
- the aforementioned scheduling information may use downlink scheduling allocation.
- the scheduling information may use one of DCI formats 1 / 1A / 1B / 1C / 1D / 2 / 2A / 2B / 2C used for downlink scheduling allocation.
- the DCI format 1C or a new format improved therefor may be used for a response to random access, paging, and transmission of system information.
- DCI format 1C is used for compact allocation for special purposes and supports only QPSK. Therefore, a new format can be used to improve this.
- the aforementioned G-RNTI may be carried on the PDCCH.
- the UE may receive the scheduling information message for the single cell multi-transmission data on the PDSCH through the masked PDCCH with the G-RNTI for the single-cell multi-transmission of interest.
- the G-RNTI for the single-cell multi-transmission of interest.
- one of DCI formats 0 / 1A / 1C / 3 / 3A that can be used in the common search space can be used to address scheduling information for single cell multi-transmission data on the PDSCH through the PDCCH.
- the terminal may receive the single cell multi-transmission data transmitted through the shared PDSCH radio resource based on the detailed information included in the scheduling information.
- the detailed information included in the scheduling information may include one or more information of a carrier indicator, resource block allocation, and MCS information.
- the resource block allocation information may include a start point and a length of resource block allocation to which a resource is allocated.
- the resource block allocation information may directly indicate resource blocks to which a resource is allocated through a bitmap.
- the detailed information included in the scheduling information may include one or more information of a carrier indicator, resource block allocation, and MCS information.
- a logical channel (SMTCH of FIG. 7) for single cell multi-transmission may be a transport channel (SMCH of FIG. 7) for single cell multi-transmission or a downlink shared channel (DL-SCH of FIG. 7). Can be mapped.
- each embodiment and scenario of the present invention described above may be applied independently or in combination with each other.
- the method and apparatus for providing point-to-multipoint transmission in the E-UTRAN described in the present invention in addition to the point-to-multipoint transmission in a single cell, a plurality of cells or cells associated with the plurality of base stations independently or in cooperation It can also be applied to large multipoint transmission.
- the base station described below may perform all operations corresponding to the above-described terminal operation.
- FIG. 8 is a view for explaining the operation of the base station according to an embodiment of the present invention.
- a base station In a method for transmitting single cell multi-transmission data, a base station according to an embodiment of the present invention, transmitting system information for single-cell multi-transmission in a primary cell (PCell) and MBMS (Multimedia) from a terminal Broadcast Multicast Service) may include receiving an interest information message.
- PCell primary cell
- MBMS Multimedia
- the base station may include transmitting system information for single cell multi-transmission in the primary cell (S810).
- the base station transmits system information for single cell multi-transmission through a PCell configured in the terminal, and the terminal may receive it.
- the base station may broadcast single cell multitransmission related information through system information.
- the base station may broadcast the G-RNTI through system information.
- the base station can broadcast the G-RNTI associated with the TMGI, TMGI through the system information.
- the base station may broadcast identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer and the G-RNTI associated with it through the system information.
- the base station may broadcast information for receiving single cell multi-transmission control information including the G-RNTI through the system information.
- the base station may broadcast information for receiving single cell multi-transmission control information including TMGI and G-RNTI associated with TMGI through system information.
- the base station through the system information, the identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer, the information for receiving the single-cell multi-transmission control information including the associated G-RNTI Can be broadcast.
- the base station may include receiving a multimedia broadcast multicast service (MBMS) interest information message from the terminal (S820).
- the MBMS interest information message may be received when the terminal establishes an RRC connection or when the interest group communication service information of the previous interest information message that the terminal last transmitted is changed.
- the base station may control the group communication transmission through the single cell multi-transmission through the MBMS interest information message received from one or more terminals.
- the base station may use the information included in the MBMS interest information message to start or end a single cell multi-transmission.
- the base station may trigger an Activate MBMS Bearer procedure to the GCS AS using information included in the MBMS Interest Information message.
- the base station may trigger to start the MBMS service / session / bearer with the BM-SC using the MBMS Interest Information message.
- the base station may trigger to start a group communication service / session / bearer to the BM-SC using the MBMS interest information message.
- the base station may select a target cell providing single cell multi-transmission based on the MBMS interest message of the terminal.
- FIG. 9 is a view for explaining the operation of the base station according to another embodiment of the present invention.
- the base station may include transmitting system information for single cell multi-transmission in the primary cell in the same manner as in steps S810 and S820 (S910).
- the base station may include receiving the MBMS interest information message from the terminal (S920).
- the MBMS interest information message may include at least one group mobile service identity (TMGI).
- the base station of the present invention may include transmitting a single cell multi-transmission control message using single cell identification information (SC-RNTI) for identifying single cell multi-transmission control information (S930).
- the single cell multi-transmission control message may include at least one of group communication service identification information (TMGI) and group identifier information (G-RNTI). Meanwhile, the G-RNTI may be set in association with the group communication service identification information.
- the terminal may receive the single cell multi-transmission control message transmitted by the base station using the SC-RNTI.
- the single cell multi-transmission control message may be scheduled through the PDCCH.
- the base station may transmit single cell multi-transmission data through the PDSCH radio resource.
- Other UEs in the same group as the corresponding UE may also transmit single cell multi-transmission data through shared PDSCH radio resources, and the base station may transmit scheduling information on the aforementioned PDSCH to transmit single cell multi-transmission data through PDSCH radio resources.
- the terminal may determine whether the corresponding single cell multitransmission data is for the group communication service of interest by using the allocated G-RNTI.
- the single cell multi-transmission control message and the single cell multi-transmission data described above may be scheduled through the PDCCH.
- the scheduling information of the single cell multi-transmission control message and the single cell multi-transmission data can be confirmed through the PDCCH region.
- the base station may perform all of the base station operations necessary to perform the above-described operation of the present invention.
- FIG. 10 is a view for explaining the operation of the base station according to another embodiment of the present invention.
- the base station of the present invention may include transmitting system information for single cell multi-transmission in the primary cell (S1010).
- the base station transmits system information for single cell multi-transmission through a PCell configured in the terminal, and the terminal may receive it.
- the base station may broadcast single cell multitransmission related information through system information.
- the base station may broadcast the G-RNTI through system information.
- the base station can broadcast the G-RNTI associated with the TMGI, TMGI through the system information.
- the base station may broadcast identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer and the G-RNTI associated with it through the system information.
- the base station may broadcast information for receiving single cell multi-transmission control information including the G-RNTI through the system information.
- the base station may broadcast information for receiving single cell multi-transmission control information including TMGI and G-RNTI associated with TMGI through system information.
- the base station through the system information, the identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer, the information for receiving the single-cell multi-transmission control information including the associated G-RNTI Can be broadcast.
- the base station may include transmitting a single cell multi-transmission control message by using single cell identification information (SC-RNTI) for identifying the single cell multi-transmission control information (S1020).
- the single cell multi-transmission control message may include at least one of group communication service identification information (TMGI) and group identifier information (G-RNTI). Meanwhile, the G-RNTI may be set in association with the group communication service identification information.
- the terminal may receive the single cell multi-transmission control message transmitted by the base station using the SC-RNTI.
- the single cell multi-transmission control message may be scheduled through the PDCCH.
- the base station may include transmitting single cell multi-transmission data using group identifier information (G-RNTI) (S1030). For example, the base station may transmit single cell multi-transmission data through the PDSCH radio resource. Other UEs in the same group as the corresponding UE may also transmit single cell multi-transmission data through shared PDSCH radio resources, and the base station may transmit scheduling information on the aforementioned PDSCH to transmit single cell multi-transmission data through PDSCH radio resources. Can be transmitted through the PDCCH region. Meanwhile, the terminal may determine whether the corresponding single cell multitransmission data is for the group communication service of interest by using the allocated G-RNTI. The single cell multi-transmission control message and the single cell multi-transmission data described above may be scheduled through the PDCCH. For example, the scheduling information of the single cell multi-transmission control message and the single cell multi-transmission data can be confirmed through the PDCCH region.
- G-RNTI group identifier information
- the present invention has the effect of providing a specific method for transmitting downlink multicast / groupcast / group communication data through a shared PDSCH radio resource for a specific group of terminals in a cell.
- a cell change occurs with the movement of the terminal, there is an effect of providing a continuous service while reducing service interruption.
- FIG. 11 is a diagram illustrating a configuration of a terminal according to another embodiment of the present invention.
- MBMS multimedia broadcast multicast service
- the controller 1110 may determine that the MBMS interest information message is transmitted when the UE establishes an RRC connection or when the interest group communication service information of the previous interest information message which the terminal last transmitted is changed. In addition, the controller 1110 receives the group communication data through the PDSCH or the RRC Connected UE by the UE 1100 necessary for carrying out the above-described invention, or group communication data through the PDSCH while minimizing service interruption. Controls the overall operation of the terminal 1100 according to the reception.
- the receiver 1130 may receive a single cell multitransmission control message using single cell identification information (Single Cell-RNTI, SC-RNTI) for identifying single cell multitransmission control information.
- the single cell multi-transmission control message includes at least one of group mobile service identity (TMGI) and group identifier information (G-RNTI), wherein the group identifier information is associated with the group communication service identification. Can be set.
- the receiver 1130 may receive single cell multi-transmission data using group identifier information (Group-RNTI, G-RNTI).
- the receiver 1130 receives downlink control information, data, and a message from a base station through a corresponding channel.
- the single cell multi-transmission control message or the single cell multi-transmission data described above is scheduled through a physical downlink control channel (PDCCH).
- PDCH physical downlink control channel
- the transmitter 1120 may transmit the MBMS interest information message, and the MBMS interest information message may include at least one group mobile service identity (TMGI). In addition, the transmitter 1120 transmits uplink control information, data, and a message to a base station through a corresponding channel.
- TMGI group mobile service identity
- FIG. 12 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.
- the base station 1200 transmits a multimedia broadcast multicast service (MBMS) interest information message from a transmitter 1220 and a terminal for transmitting system information for single cell multi-transmission in a primary cell (PCell). It includes a receiving unit 1230 for receiving.
- MBMS multimedia broadcast multicast service
- the controller 1210 may be configured to receive the group communication data through the PDSCH or the group communication data through the PDSCH while minimizing service interruption as the RRC connected terminal moves between cells. The operation of the base station 1200 is controlled.
- the transmitter 1220 may transmit a single cell multitransmission control message using single cell identification information (Single Cell-RNTI, SC-RNTI) for identifying the single cell multitransmission control information.
- the single cell multi-transmission control message includes at least one of group mobile service identity (TMGI) and group identifier information (G-RNTI), wherein the group identifier information is associated with the group communication service identification. Can be set.
- the transmitter 1220 may transmit single cell multi-transmission data using group identifier information (Group-RNTI, G-RNTI).
- the single cell multitransmission control message or the single cell multitransmission data may be scheduled through a physical downlink control channel (PDCCH).
- PDCH physical downlink control channel
- the receiver 1230 may receive the MBMS interest information message when the terminal establishes an RRC connection or when the interest group communication service information of the previous interest information message which the terminal last transmitted is changed.
- the MBMS interest information message may include at least one group mobile service identity (TMGI).
- the transmitter 1220 and the receiver 1230 are used to transmit and receive signals, messages, and data necessary for carrying out the above-described present invention.
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Abstract
Description
Claims (20)
- 단말이 단일 셀 멀티전송 데이터를 수신하는 방법에 있어서,프라이머리 셀(Primary Cell, PCell)에서 단일 셀 멀티전송을 위한 시스템 정보를 수신하는 단계;MBMS(Multimedia Broadcast Multicast Service) 관심 정보 메시지의 전송 여부를 결정하는 단계; 및상기 MBMS 관심 정보 메시지를 전송하는 단계를 포함하되,상기 MBMS 관심 정보 메시지는상기 단말이 RRC 연결을 설정할 때 또는 상기 단말이 마지막으로 전송한 이전 관심 정보 메시지의 관심 그룹 통신 서비스 정보가 변경되었을 때 전송되도록 결정되는 방법.
- 제 1 항에 있어서,상기 MBMS 관심 정보 메시지는,적어도 하나의 그룹 통신 서비스 식별정보(Temporary Mobile Group Identity, TMGI)를 포함하는 것을 특징으로 하는 방법.
- 제 1 항에 있어서,단일 셀 멀티전송 제어 정보를 식별하기 위한 단일 셀 식별정보(Single Cell-RNTI, SC-RNTI)를 이용하여 단일 셀 멀티전송 제어 메시지를 수신하는 단계; 및그룹 식별자 정보(Group-RNTI, G-RNTI)를 이용하여 단일 셀 멀티전송 데이터를 수신하는 단계를 더 포함하는 방법.
- 제 3 항에 있어서,상기 단일 셀 멀티전송 제어 메시지는,그룹 통신 서비스 식별정보(Temporary Mobile Group Identity, TMGI) 및 상기 그룹 식별자 정보(G-RNTI) 중 적어도 하나의 정보를 포함하되,상기 그룹 식별자 정보는 상기 그룹 통신 서비스 식별 정보에 연계되어 설정되는 것을 특징으로 하는 방법.
- 제 3 항에 있어서,상기 단일 셀 멀티전송 제어 메시지 또는 상기 단일 셀 멀티전송 데이터는,PDCCH(Physical Downlink Control Channel)를 통해서 스케줄링 되는 것을 특징으로 하는 방법.
- 기지국이 단일 셀 멀티전송 데이터를 전송하는 방법에 있어서,프라이머리 셀(Primary Cell, PCell)에서 상기 단일 셀 멀티전송을 위한 시스템 정보를 전송하는 단계; 및단말로부터 MBMS(Multimedia Broadcast Multicast Service) 관심 정보 메시지를 수신하는 단계를 포함하되,상기 MBMS 관심 정보 메시지는상기 단말이 RRC 연결을 설정할 때 또는 상기 단말이 마지막으로 전송한 이전 관심 정보 메시지의 관심 그룹 통신 서비스 정보가 변경되었을 때 수신되는 방법.
- 제 6 항에 있어서,상기 MBMS 관심 정보 메시지는,적어도 하나의 그룹 통신 서비스 식별정보(Temporary Mobile Group Identity, TMGI)를 포함하는 것을 특징으로 하는 방법.
- 제 6 항에 있어서,단일 셀 멀티전송 제어 정보를 식별하기 위한 단일 셀 식별정보(Single Cell-RNTI, SC-RNTI)를 이용하여 단일 셀 멀티전송 제어 메시지를 전송하는 단계; 및그룹 식별자 정보(Group-RNTI, G-RNTI)를 이용하여 단일 셀 멀티전송 데이터를 전송하는 단계를 더 포함하는 방법.
- 제 8 항에 있어서,상기 단일 셀 멀티전송 제어 메시지는,그룹 통신 서비스 식별정보(Temporary Mobile Group Identity, TMGI) 및 상기 그룹 식별자 정보(G-RNTI) 중 적어도 하나의 정보를 포함하되,상기 그룹 식별자 정보는 상기 그룹 통신 서비스 식별 정보에 연계되어 설정되는 것을 특징으로 하는 방법.
- 제 8 항에 있어서,상기 단일 셀 멀티전송 제어 메시지 또는 상기 단일 셀 멀티전송 데이터는,PDCCH(Physical Downlink Control Channel)를 통해서 스케줄링 되는 것을 특징으로 하는 방법.
- 단일 셀 멀티전송 데이터를 수신하는 단말에 있어서,프라이머리 셀(Primary Cell, PCell)에서 단일 셀 멀티전송을 위한 시스템 정보를 수신하는 수신부;MBMS(Multimedia Broadcast Multicast Service) 관심 정보 메시지의 전송 여부를 결정하는 제어부; 및상기 MBMS 관심 정보 메시지를 전송하는 송신부를 포함하되,상기 제어부는,상기 단말이 RRC 연결을 설정할 때 또는 상기 단말이 마지막으로 전송한 이전 관심 정보 메시지의 관심 그룹 통신 서비스 정보가 변경되었을 때 상기 MBMS 관심 정보 메시지가 전송되도록 결정하는 단말.
- 제 11 항에 있어서,상기 MBMS 관심 정보 메시지는,적어도 하나의 그룹 통신 서비스 식별정보(Temporary Mobile Group Identity, TMGI)를 포함하는 것을 특징으로 하는 단말.
- 제 11 항에 있어서,상기 수신부는,단일 셀 멀티전송 제어 정보를 식별하기 위한 단일 셀 식별정보(Single Cell-RNTI, SC-RNTI)를 이용하여 단일 셀 멀티전송 제어 메시지를 수신하고,그룹 식별자 정보(Group-RNTI, G-RNTI)를 이용하여 단일 셀 멀티전송 데이터를 수신하는 단말.
- 제 13 항에 있어서,상기 단일 셀 멀티전송 제어 메시지는,그룹 통신 서비스 식별정보(Temporary Mobile Group Identity, TMGI) 및 상기 그룹 식별자 정보(G-RNTI) 중 적어도 하나의 정보를 포함하되,상기 그룹 식별자 정보는 상기 그룹 통신 서비스 식별 정보에 연계되어 설정되는 것을 특징으로 하는 단말.
- 제 13 항에 있어서,상기 단일 셀 멀티전송 제어 메시지 또는 상기 단일 셀 멀티전송 데이터는,PDCCH(Physical Downlink Control Channel)를 통해서 스케줄링 되는 것을 특징으로 하는 단말.
- 단일 셀 멀티전송 데이터를 전송하는 기지국에 있어서,프라이머리 셀(Primary Cell, PCell)에서 상기 단일 셀 멀티전송을 위한 시스템 정보를 전송하는 송신부; 및단말로부터 MBMS(Multimedia Broadcast Multicast Service) 관심 정보 메시지를 수신하는 수신부를 포함하되,상기 MBMS 관심 정보 메시지는상기 단말이 RRC 연결을 설정할 때 또는 상기 단말이 마지막으로 전송한 이전 관심 정보 메시지의 관심 그룹 통신 서비스 정보가 변경되었을 때 수신되는 기지국.
- 제 16 항에 있어서,상기 MBMS 관심 정보 메시지는,적어도 하나의 그룹 통신 서비스 식별정보(Temporary Mobile Group Identity, TMGI)를 포함하는 것을 특징으로 하는 기지국.
- 제 16 항에 있어서,상기 송신부는,단일 셀 멀티전송 제어 정보를 식별하기 위한 단일 셀 식별정보(Single Cell-RNTI, SC-RNTI)를 이용하여 단일 셀 멀티전송 제어 메시지를 전송하고,그룹 식별자 정보(Group-RNTI, G-RNTI)를 이용하여 단일 셀 멀티전송 데이터를 전송하는 기지국.
- 제 18 항에 있어서,상기 단일 셀 멀티전송 제어 메시지는,그룹 통신 서비스 식별정보(Temporary Mobile Group Identity, TMGI) 및 상기 그룹 식별자 정보(G-RNTI) 중 적어도 하나의 정보를 포함하되,상기 그룹 식별자 정보는 상기 그룹 통신 서비스 식별 정보에 연계되어 설정되는 것을 특징으로 하는 기지국.
- 제 18 항에 있어서,상기 단일 셀 멀티전송 제어 메시지 또는 상기 단일 셀 멀티전송 데이터는,PDCCH(Physical Downlink Control Channel)를 통해서 스케줄링 되는 것을 특징으로 하는 기지국.
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| US15/541,753 US10237084B2 (en) | 2015-01-08 | 2015-12-30 | Method for transmitting and receiving single-cell multi-transmission data and apparatus therefor |
| CN201580066326.7A CN107005820B (zh) | 2015-01-08 | 2015-12-30 | 用于发送和接收单小区多传输数据的方法及其装置 |
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| KR1020150185653A KR101866619B1 (ko) | 2015-01-08 | 2015-12-24 | 단일 셀 멀티전송 데이터를 송수신하는 방법 및 그 장치 |
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