KR101818833B1 - Methods for transmitting and receiving the single cell multipoint transmission data and Apparatuses thereof - Google Patents

Abstract

The present invention relates to a technique for transmitting and receiving single cell multi-transmission data. More particularly, the present invention relates to a method and apparatus for providing point-to-multipoint transmission within a single cell in a mobile communication network. More particularly, the present invention relates to a method and apparatus for receiving single cell multi transmission control information in a primary cell, receiving system information for a single cell multi transmission in a primary cell (PCell), receiving single cell multi transmission control information in a primary cell, And verifying whether the neighboring cell is provided with a single cell multi-transmission.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for transmitting / receiving single cell multi-transmission data,

The present invention relates to a technique for transmitting and receiving single cell multi-transmission data. More particularly, the present invention relates to a method and apparatus for providing point-to-multipoint transmission within a single cell in a mobile communication network.

3GPP Long Term Evolution (LTE) introduced Group Communication System Enablers (GCSE) to transmit data to a plurality of terminals in a situation where urgent communication such as public disaster is required.

However, in 3GPP Release 12, a group of UEs used a Multimedia Broadcast Multicast Service (MBMS) to receive group communication.

MBMS is designed to provide media content for mobile TV and the like in a large pre-planned area (e.g., MBSFN area). The MBSFN area is somewhat static. Also, it can not be dynamically adjusted according to user distribution. The 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.

As such, the MBMS occupies the entire system bandwidth and can not be dynamically adjusted according to the number of groups or the traffic load of the group in terms of static. This provides a problem that the base station is inefficient when transmitting group communication data to a plurality of terminals.

SUMMARY OF THE INVENTION In view of the foregoing, the present invention proposes a method and apparatus for dynamically transmitting and receiving multi-transmission data through a PDSCH when transmitting multi-transmission data to a group composed of a plurality of terminals in a single cell.

Also, the present invention proposes a method and apparatus for transmitting / receiving multi-data through a PDSCH while minimizing interruption of group communication service caused by cell-to-cell movement of the UE.

According to another aspect of the present invention, there is provided a method for receiving single cell multi-transmission data, the method comprising the steps of: receiving system information for a single cell multi-transmission in a primary cell (PCell) Receiving multi-cell multi-transmission control information from the neighboring cell and verifying whether a neighbor cell is provided with a single cell multi-transmission using the single-cell multi-transmission control information.

According to another aspect of the present invention, there is provided a method for transmitting a single cell multi transmission data in a base station, the method comprising: transmitting system information for a single cell multi transmission in a primary cell (PCell) And transmitting single cell multi-transmission control information from the primary cell to the mobile station.

In addition, the present invention provides a method of controlling a terminal for receiving single cell multi-transmission data, the method comprising: receiving system information for a single cell multi-transmission in a primary cell (PCell) And a control unit for checking whether a neighboring cell is provided with a single cell multi-transmission using the receiving unit and the single cell multi-transmission control information.

According to another aspect of the present invention, there is provided a base station for transmitting single cell multi-transmission data, comprising: a controller for generating single-cell multi-transmission control information and a primary cell, And a transmitter for transmitting the single cell multi-transmission control information from the primary cell to the mobile station.

As described above, the present invention provides an effect of enabling efficient use of radio resources by dynamically transmitting / receiving multi-transmission data through a PDSCH to a group composed of a plurality of terminals in a single cell.

In addition, the present invention provides an effect of transmitting / receiving multi-data through a PDSCH while minimizing a group communication service interruption caused by inter-cell movement of the UE.

1 is a diagram illustrating the mapping between downlink transport channels and downlink physical channels.
2 is a diagram illustrating a mapping between downlink logical channels and downlink transport channels.
3 is a diagram illustrating a Layer 2 structure for a downlink with a carrier merging configuration.
4 is a diagram for explaining operations of a terminal according to an embodiment of the present invention.
5 is a diagram for explaining operations of a terminal according to another embodiment of the present invention.
6 is a view for explaining operations of a terminal according to another embodiment of the present invention.
7 is a view for explaining the operation of a base station according to an embodiment of the present invention.
8 is a diagram illustrating a configuration of a terminal according to another embodiment of the present invention.
9 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Herein, the MTC terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement. In this specification, the MTC terminal may mean a terminal supporting low cost (or low complexity) and coverage enhancement. Alternatively, the MTC terminal may refer to a terminal defined in a specific category for supporting low cost (or low complexity) and / or coverage enhancement.

In other words, the MTC terminal may refer to a newly defined 3GPP Release 13 low cost (or low complexity) UE category / type for performing LTE-based MTC-related operations. Alternatively, the MTC terminal may support the enhanced coverage over the existing LTE coverage or the UE category / type defined in the existing 3GPP Release 12 or lower that supports low power consumption, or the newly defined Release 13 low cost (or low complexity ) 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. A wireless communication system includes a user equipment (UE) and a base station (BS, or eNB). The user terminal in this specification is a comprehensive concept of a terminal in wireless communication. It is a comprehensive concept which means a mobile station (MS), a user terminal (UT), an SS (User Equipment) (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 (eNB), a sector, a Site, a BTS A base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell.

That is, in the present specification, a base station or a cell has a comprehensive meaning indicating a part or function covered by BSC (Base Station Controller) in CDMA, Node-B in WCDMA, eNB in LTE or sector (site) And covers various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, and small cell communication range.

Since the various cells listed above exist in the base station controlling each cell, the base station can be interpreted into two meanings. i) the device itself providing a megacell, macrocell, microcell, picocell, femtocell, small cell in relation to the wireless region, or ii) indicating the wireless region itself. i indicate to the base station all devices that are controlled by the same entity or that interact to configure the wireless region as a collaboration. An eNB, an RRH, an antenna, an RU, an LPN, a point, a transmission / reception point, a transmission point, a reception point, and the like are exemplary embodiments of a base station according to a configuration method of a radio area. ii) may indicate to the base station the wireless region itself that is to receive or transmit signals from the perspective of the user terminal or from a neighboring base station.

Therefore, a base station is collectively referred to as a base station, collectively referred to as a megacell, macrocell, microcell, picocell, femtocell, small cell, RRH, antenna, RU, low power node do.

Herein, the user terminal and the base station are used in a broad sense as the two transmitting and receiving subjects used to implement the technical or technical idea described in this specification, and are not limited by a specific term or word. The user terminal and the base station are used in a broad sense as two (uplink or downlink) transmitting and receiving subjects used to implement the technology or technical idea described in the present invention, and are not limited by a specific term or word. Here, an uplink (UL, or uplink) means a method of transmitting / receiving data to / from a base station by a user terminal, and a downlink (DL or downlink) .

There are no restrictions on multiple access schemes applied to wireless communication systems. Various multiple access schemes such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), OFDM-FDMA, OFDM- Can be used. An embodiment of the present invention can be applied to asynchronous wireless communication that evolves into LTE and LTE-advanced via GSM, WCDMA, and HSPA, and synchronous wireless communication that evolves into CDMA, CDMA-2000, and UMB. The present invention should not be construed as limited to or limited to a specific wireless communication field and should be construed as including all technical fields to which the idea of the present invention can be applied.

A TDD (Time Division Duplex) scheme in which uplink and downlink transmissions are transmitted using different time periods, or an FDD (Frequency Division Duplex) scheme in which they are transmitted using different frequencies can be used.

In systems such as LTE and LTE-Advanced, the uplink and downlink are configured on the basis of one carrier or carrier pair to form a standard. The uplink and the downlink are divided into a Physical Downlink Control Channel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel, a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control Channel (EPDCCH) Transmits control information through the same control channel, and is configured with data channels such as PDSCH (Physical Downlink Shared CHannel) and PUSCH (Physical Uplink Shared CHannel), and transmits data.

On the other hand, control information can also be transmitted using EPDCCH (enhanced PDCCH or extended PDCCH).

In this specification, a cell refers to a component carrier having a coverage of a signal transmitted from a transmission point or a transmission point or transmission / reception point of a signal transmitted from a transmission / reception point, and a transmission / reception point itself .

The wireless communication system to which the embodiments are applied may be a coordinated multi-point transmission / reception system (CoMP system) or a coordinated multi-point transmission / reception system in which two or more transmission / reception points cooperatively transmit signals. antenna transmission system, or a cooperative multi-cell communication system. A CoMP system may include at least two multipoint transmit and receive points and terminals.

The multi-point transmission / reception point includes a base station or a macro cell (hereinafter referred to as 'eNB'), and at least one mobile station having a high transmission power or a low transmission power in a macro cell area, Lt; / RTI >

Hereinafter, a downlink refers to a communication or communication path from a multipoint transmission / reception point to a terminal, and an uplink refers to a communication or communication path from a terminal to a multiple transmission / reception point. In the downlink, a transmitter may be a part of a multipoint transmission / reception point, and a receiver may be a part of a terminal. In the uplink, the transmitter may be a part of the terminal, and the receiver may be a part of multiple transmission / reception points.

Hereinafter, a situation in which a signal is transmitted / received through a channel such as PUCCH, PUSCH, PDCCH, EPDCCH, and PDSCH is expressed as 'PUCCH, PUSCH, PDCCH, EPDCCH and PDSCH are transmitted and received'.

In the following description, an indication that a PDCCH is transmitted or received or a signal is transmitted or received via a PDCCH may be used to mean transmitting or receiving an EPDCCH or transmitting or receiving a signal through an EPDCCH.

That is, the physical downlink control channel described below may mean a PDCCH, an EPDCCH, or a PDCCH and an EPDCCH.

Also, for convenience of description, EPDCCH, which is an embodiment of the present invention, may be applied to the portion described with PDCCH, and EPDCCH may be applied to the portion described with EPDCCH according to an embodiment of the present invention.

Meanwhile, the High Layer Signaling described below includes RRC signaling for transmitting RRC information including RRC parameters.

The eNB performs downlink transmission to the UEs. The eNB includes a physical downlink shared channel (PDSCH) as a main physical channel for unicast transmission, downlink control information such as scheduling required for reception of a PDSCH, A physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission in a Physical Uplink Shared Channel (PUSCH). Hereinafter, the transmission / reception of a signal through each channel will be described in a form in which the corresponding channel is transmitted / received.

The present invention relates to a method and apparatus for transmitting and receiving single cell multi-transmission data.

In the conventional E-UTRAN, group terminals have to use a static or static radio resource configuration in order to receive group communication data (downlink multicast or group cast) using MBMS. Although it is possible to consider receiving the same downlink data through the PDSCH in a multicast manner as a method for eliminating such inefficiency, a specific procedure for receiving downlink data through PDSCHs has not been provided by a plurality of group terminals . Also, the method of receiving the downlink group communication data through the PDSCH can occur independently in each cell, and the continuity of the service can not be guaranteed when the cell change occurs according to the movement of the UE. SUMMARY OF THE INVENTION The present invention, which is devised to solve such problems, provides a method and apparatus for receiving downlink group communication data through a PDSCH. The present invention also provides a method and apparatus for receiving group communication data over a PDSCH while minimizing service interruption according to cell-to-cell movement.

1 is a diagram illustrating the mapping between downlink transport channels and downlink physical channels. Referring to FIG. 1, the PDSCH physical channel can be used only for carrying the DL-SCH and the PCH transport channel.

2 is a diagram illustrating a mapping between downlink logical channels and downlink transport channels. Referring to FIG. 2, the DL-SCH transmission channel can be transmitted by mapping BCCH, CCCH, DCCH, and DTCH logical channels.

The PCCH is used to transmit paging information and system information change notification. For example, when the UE detects a P-RNTI transmitted on a PDCCH that wakes up to a paging occasion and addresses a paging message for paging reception of an idle mode UE, the UE transmits a corresponding downlink paging And perform processing for receiving the message.

 The BCCH is used for broadcasting system control information. For example, a Master Information Block (MIB) of the BCCH logical channel is mapped to the BCH and transmitted over the PBCH. As another example, a System Information Block (SIB) other than SIB1 among the BCCH logical channels is mapped to a system information message (SI message), which is transmitted through the DL-SCH. The mapping of SIBs other than SIB1 to system information messages is flexible and dictated by SIB1. The terminal must acquire SIB1 to know how other SIBs are scheduled. Each SIB is included in a single SI message, and a single SI message may comprise a plurality of SIBs having the same period. 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 different SI-windows that do not overlap. When 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 within one cell. The UE decodes the SI-RNTI on the PDCCH in the SI-window to obtain the detailed scheduling of the system information in the corresponding SI-window.

The CCCH is used to transmit control information associated with random accesses of terminals without an RRC connection. For RRC messages on the CCCH, MAC HARQ retransmissions can be performed and thus duplicate reception may occur.

The DCCH is a point-to-point channel used to transmit dedicated control information of UEs having RRC connections. The DTCH is a point-to-point channel dedicated to a terminal used for transmission of user information.

The UE receives the downlink assignment through the masked PDCCH with the C-RNTI of the UE. The downlink assignment indicates HARQ information and information on radio resources on the assigned PDSCH.

Figure 3 shows a layer 2 structure for a downlink with a Carrier Aggregation (CA) configuration.

As described above, the PDSCH can be used to receive dedicated information for a specific UE and common information for a specific UE. For this purpose, a terminal-specific identifier (e.g., C-RNTI) is required for the corresponding terminal. In addition, the PDSCH may be used for paging information, common information reception, etc. for all or group terminals, and a common group identifier (for example, P-RNTI, SI-RNTI, etc.) is required for this purpose. E-UTRAN uses FFFF as the P-RNTI value and FFFF as the SI-RNTI value.

In this specification, transmission of data through a PDSCH radio resource shared among UEs belonging to a specific group in one cell will be described as a single cell multi-transmission, and a single cell multi- The groupcast or group communication data transmitted through the PDSCH radio resource shared with the base station is described as single cell multi-transmission data. In addition, a communication format for transmitting and receiving data through single cell multi-transmission will be described as group communication.

In order to transmit single cell multi-transmission data, a specific group identifier (Group Specific RNTI) assigned to the specific group is described as group identifier information (Group-RNTI, G-RNTI). The service provided to the UEs through group communication is referred to as a group communication service, and information for distinguishing each group communication service, a group communication session, or a group communication bearer is referred to as a Temporary Mobile Group Identity (TMGI) Will be described. In addition, a terminal having interest in group communication or a terminal interested in group communication through single cell multi-transmission or a terminal capable of single-cell multi-transmission will be collectively referred to as a terminal interested in group communication.

Meanwhile, the UE needs information for identifying a single cell multi-transmission control message transmitted by the Node B, which is referred to as Single Cell-RNTI (SC-RNTI), and the UE uses an SC-RNTI Cell multi-transmission control information. The single cell multi transmission control message includes control information for single cell multi transmission.

Each of the terms described above are for convenience of understanding, and the names are not limited.

A terminal interested in group communication may know the group communication service identification information (TMGI) for identifying a particular group communication service of interest via an application server (e.g., GCS AS or BM-SC). Alternatively, a TMGI for identifying specific group communication services of interest in the terminal may be pre-configured.

One of MBMS or single cell multi-transport or unicast bearer may be used for downlink transmission to group communication service. And, unicast bearers can be used for uplink transmission.

In case of using MBMS, a MBMS bearer preset can be used between the BM-SC (Broadcast / Multicast Service Center) and base stations for group communication service / session / bearer setup. Alternatively, at the request of the GCS AS (Group Communication Service Application Server), the MBMS bearer can be established and used between the BM-SC and the base stations through the Activate MBMS Bearer procedure. (MBMS Session Identity) for identifying each MBMS session, TMGGI for identifying a downlink MBMS bearer service for group communication, MBSFN zone identification information, and group communication service / session / bearer downlink service / session / bearer (E.g., GCS AS, IMS, etc.) that are assigned by the BM-SC or by the GCS AS or by another EPS (Evolved Packet System) entity to control the group communication, PCRF, other EPS entities), or by an EPS entity that controls registration (or authentication or validation). In order for the terminal to use the MBMS to receive the downlink transmission for the group communication, the terminal can either use the GCS application server (GCS AS) or an EPS entity that controls group communication, or an EPS entity that controls registration You can register. Alternatively, the TMGI for identifying the downlink MBMS bearer service for group communication and the MBMS Session Identity (MBMS Session Identity) for distinguishing each MBMS session, the MBSFN zone identification information, or the group identifier information for group communication are preset in the terminal . If the EPS entity that controls the GCS AS or group communication decides to provide the downlink transmissions for the group communication over the MBMS in certain cells, the GCS AS or the EPS entity that controls the group communication or the registration (or authentication or confirmation) The controlling EPS entity can start the MBMS session to the base stations via the BM-SC.

When using single cell multi-transmission, the base station allocates a G-RNTI to provide a specific group communication service through a single cell multi-transmission. The G-RNTI may be associated with the TMGI. Or the G-RNTI may be associated with the TMGI and / or MBMS session ID. Or the G-RNTI may be associated with the downlink service of the group communication service. Or the G-RNTI may be associated with identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer.

4 is a diagram for explaining operations of a terminal according to an embodiment of the present invention.

The method includes receiving system information for a single cell multi-transmission in a primary cell (PCell), receiving single-cell multi-transmission control information in a primary cell, And verifying whether a neighbor cell is provided with a single cell multi-transmission using the single cell multi-transmission control information.

Referring to FIG. 4, the UE includes receiving system information for a single cell multi-transmission in a primary cell (S410). For example, the BS transmits system information for a single cell multi-transmission through the PCs configured in the MS, and the MS can receive the system information. In one example, the base station may broadcast single cell multi-transmission related information through the system information. For example, the base station may broadcast the G-RNTI through the system information. Alternatively, the base station may broadcast the G-RNTI associated with TMGI and TMGI through the system information. Alternatively, the base station can broadcast identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer, and the associated G-RNTI through the system information. In another example, the base station may broadcast information for receiving the single cell multi-transmission control information including the G-RNTI through the system information. Alternatively, the base station may broadcast information for receiving the single cell multi-transmission control information including the G-RNTI associated with TMGI and TMGI through the system information. Alternatively, the base station may transmit identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer through the system information, information for receiving the single cell multi-transmission control information including the associated G- Lt; / RTI > Accordingly, the terminal can recognize the group identifier information (G-RNTI) for the group communication. The UE can receive the system information, determine whether the cell is provided with a single cell multi-transmission, and identify the group communication service provided by the corresponding cell.

In addition, the UE includes receiving the single cell multi-transmission control information in the primary cell (S420). The single cell multi-transmission control information may be scheduled by system information for single cell multi-transmission. For example, the UE receives the system information in step S410, and can check the period, the offset value, and the like at which the single cell multi-transmission control information is transmitted. That is, the UE can receive the single cell multi-transmission control information scheduled by the system information.

On the other hand, the single cell multi-transmission control information may include information on neighboring cells providing a single cell multi-transmission. Or the single cell multi-transmission control information may include information about the group communication service that each cell can provide. Alternatively, the single cell multi-transmission control information may include corresponding information that matches the group communication service with neighboring cells. For example, the single-cell multi-transmission control information includes cell identification information, a Temporary Mobile Group Identity (TMGI), and a group identifier information (Group-RNTI) for a neighbor cell providing a single cell multi- And neighbor cell information providing a single cell multi-transport associated with the RNTI. Through this, the terminal can acquire information about neighboring cells providing the group communication service of interest. Alternatively, the terminal may verify information about neighboring cells providing a single cell multi-transport. The single cell multi-transmission control information may be indicated via the PDCCH.

In addition, the UE includes checking whether a neighbor cell is provided with a single cell multi-transport using the single cell multi-transport control information (S430). The UE can check whether the neighbor cell provides a single cell multi-transport using the received single cell multi-transport control information. Alternatively, the terminal may check which group communication service the neighboring cell provides. Or the terminal can identify the neighboring cell that the terminal is providing the group communication service of interest. Alternatively, the terminal may identify a cell providing a single cell multi-transmission. Accordingly, even if the UE does not check the system information of the neighboring cell, the UE can confirm whether the neighboring cell is transmitting a single cell or whether the UE provides interest group communication.

Meanwhile, the UE can receive the single cell multi-transmission data using the G-RNTI. For example, the UE can receive the single cell multi-transmission data through the PDSCH radio resource. Other UEs in the same group as the corresponding UE can receive the single cell multi-transmission data through the shared PDSCH radio resource, and in order to receive the single cell multi-transmission data through the PDSCH radio resource, The scheduling information can be received through the PDCCH region. Meanwhile, the UE can confirm whether the corresponding single cell multi-transmission data is for the group communication service of interest by using the allocated G-RNTI.

As described above, the UE of the present invention can receive single cell multi-transmission data for a group communication service through a PDSCH region, and can confirm whether a neighbor cell is provided with a single cell multi-transmission through a serving cell. The UE can confirm whether the single cell multi-transmission is provided or whether the group communication service is provided, and can continuously receive the single cell multi-transmission data even if the UE moves.

5 is a diagram for explaining operations of a terminal according to another embodiment of the present invention.

The terminal of the present invention can request reception of a group communication service through unicast when a neighboring cell does not provide a single cell multi-transmission.

Referring to FIG. 5, the terminal of the present invention receives system information for a single cell multi-transmission in a primary cell (S510) as described with reference to steps S410 to S430, Information may be received (S520). The base station can broadcast the G-RNTI through the system information. Alternatively, the base station may broadcast the G-RNTI associated with TMGI and TMGI through the system information. Alternatively, the base station can broadcast identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer, and the associated G-RNTI through the system information. In another example, the base station may broadcast information for receiving the single cell multi-transmission control information including the G-RNTI through the system information. Alternatively, the base station may broadcast information for receiving the single cell multi-transmission control information including the G-RNTI associated with TMGI and TMGI through the system information. Alternatively, the base station may transmit identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer through the system information, information for receiving the single cell multi-transmission control information including the associated G- Lt; / RTI >

In addition, the single cell multi-transmission control information can be scheduled by the system information for single cell multi-transmission. For example, the UE can receive the system information, and can check the period, the offset value, and the like at which the single cell multi-transmission control information is transmitted. That is, the UE can receive the single cell multi-transmission control information at a timing scheduled by the system information. On the other hand, the single cell multi-transmission control information may include information on neighboring cells providing a single cell multi-transmission. Or the single cell multi-transmission control information may include information about the group communication service that each cell can provide. Alternatively, the single cell multi-transmission control information may include the correspondence information of the group communication service and the cell. For example, the single-cell multi-transmission control information includes cell identification information, a Temporary Mobile Group Identity (TMGI), and a group identifier information (Group-RNTI) for a neighbor cell providing a single cell multi- And neighbor cell information providing a single cell multi-transport associated with the RNTI.

In addition, the UE may include checking whether a neighbor cell is provided with a single cell multi-transport using the single cell multi-transport control information (S530). The UE can check whether the neighbor cell provides a single cell multi-transport using the received single cell multi-transport control information. Alternatively, the terminal may check which group communication service the neighboring cell provides. Or the terminal can identify the neighboring cell that the terminal is providing the group communication service of interest. Alternatively, the terminal may identify a cell providing a single cell multi-transmission.

If the neighbor cell does not provide a single cell multi-transport before the cell change, the terminal may request to receive the group communication service through unicast (S540). For example, if the neighboring cell to which the mobile terminal moves does not provide a single cell multi-transmission for the group communication service of interest, as a result of checking the control information, the mobile station directly transmits the group communication through the GCS AS Service can be requested. For example, a UE can request a group communication service through unicast while receiving a group communication service through a single cell multi-transmission in a primary cell. As another example, a terminal in the RRC connection state can directly request a group communication service via unicast through the GCS AS. As another example, in the case of the RRC idle terminal, after establishing the RRC connection, it is possible to request the group communication service through unicast through the GCS AS. The end-to-end delay for media delivery using a unicast bearer is 40ms. On the other hand, the end-to-end delay for media delivery through the MBMS MRB is 160ms. Therefore, in order to provide service continuity, if the neighboring cell to which the UE is moving does not support single cell multi-transmission, even if the neighboring cell supports MBMS (or group communication via MBMS or MBSFN providing the same service) First, requesting a service through unicast may reduce service interruption. Then, after moving to the target cell, the mobile communication terminal can receive the group communication service through the MBMS.

6 is a view for explaining operations of a terminal according to another embodiment of the present invention.

The UE of the present invention may include performing a cell reselection procedure by setting a frequency of a cell providing a single cell multi-transmission to the highest priority.

Referring to FIG. 6, the UE receives system information for a single cell multi-transmission in a primary cell (S610) as described with reference to FIGS. 4 and 5, and transmits single cell multi- (S620). The UE can confirm whether a neighbor cell is provided with a single cell multi-transmission through the received control information (S630).

In step S640, the UE in the RRC IDLE state may perform the cell reselection procedure by setting the frequency of the cell providing the single cell multi-transmission to the highest priority. The terminal can receive single cell multi-transmission data in the primary cell. Or the terminal may move to a neighboring cell providing a single cell multi-transport and receive single cell multi-transport data. In this case, the UE may set the frequency of the cell providing the single cell multi-transmission to be the highest priority in the cell reselection. For example, unlike handover, cell reselection searches for and selects a frequency according to the priority assigned to the frequency. Therefore, when a terminal that is receiving group communication service using a single cell multi-transmission or expecting reception performs a cell reselection, a cell that does not provide a single cell multi-transmission is selected according to a priority set for each frequency Problems can arise. In order to solve this problem, the UE sets the frequency of the cell providing the group communication service in which the UE is interested or receiving it as the highest priority in the cell reselection procedure, so that the group communication service is not stopped according to the cell reselection procedure can do. The specific priority setting method will be described in detail below.

Hereinafter, the operations of the terminal and the base station of the present invention described with reference to FIGS. 4 to 6 will be described in detail with reference to specific embodiments.

The base station can broadcast single cell multi transmission related information through the system information. For example, the base station may broadcast the G-RNTI. As another example of this, the base station may broadcast the G-RNTI associated with TMGI and TMGI. As another example of this, the base station may broadcast the identification information and the associated G-RNTI for identifying the downlink service / session / bearer of the group communication service / session / bearer. As another example of this, the base station may broadcast information for receiving the single cell multi-transmission control information including the G-RNTI. As another example of this, the base station may broadcast information for receiving the single cell multi-transmission control information including the G-RNTI associated with TMGI and TMGI. As another example of this, the base station transmits information for receiving the single cell multi-transmission control information including the identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer and the associated G-RNTI It can broadcast. Therefore, a terminal interested in the group communication can know the G-RNTI for the group communication service.

When a terminal that is interested in group communication that receives (or is in the process of receiving) a downlink transmission of a particular group communication transmitted over a single cell multi-transmission moves between cells (or moves between base stations or moves to another base station cell) Service continuity needs to be provided in order to reduce the service continuity. A method for providing service continuity will be described below for each scenario.

Scenario 1: Move to a cell that does not support single-cell multi-transfer from a cell that supports single-cell multi-transfer

While the terminal is in the source cell, based on the control information associated with the single cell multi transmission related system information of the neighboring cell or the control information associated with the single cell multi transmission related system information, It is possible to confirm whether or not the neighboring cell to be moved is capable of supporting a single cell multi-transmission.

If the neighboring cell to which the UE is about to move does not support single cell multi-transport, the UE can request service through unicast while receiving the service through the single cell multi-transport in the source cell. In case of RRC Connected terminal, it is possible to request service through unicast directly through GCS AS. In case of the RRC IDLE terminal, after the RRC connection is established, the service through unicast can be requested through the GCS AS.

The end-to-end delay for media delivery using a unicast bearer is 40ms. On the other hand, the end-to-end delay for media delivery through the MBMS MRB is 160ms. Therefore, in order to provide service continuity, if the neighboring cell to which the UE is moving does not support single cell multi-transmission, even if the neighboring cell supports MBMS (or group communication via MBMS or MBSFN providing the same service) First, requesting a service through unicast may reduce service interruption. Then, after moving to the target cell, group communication can be received through the MBMS.

The UE may experience short service interruption while the UE moves from a single cell multi transmission cell to a cell that does not support single cell multi transmission. In another method for avoiding or mitigating this, the source cell (or the source base station) is transmitted through the BM-SC (or the GCS AS or any group communication data transmission entity) Data can be forwarded to the target cell (target base station).

For example, if the target cell / base station receives group communication data communicated over the source cell / base station via BM-SC (or GCS AS or any group communication data transmission entity), the target base station can forward it to the terminal have. For example, the target base station may transmit the corresponding data through a single cell multi-transmission. To this end, the G-RNTI may be received from the source base station in the handover preparation message. During the handover preparation, a tunnel for data forwarding for that data may be established. For another example, the target base station may transmit the data through the data radio bearer of the corresponding terminal. During the handover preparation, a tunnel for data forwarding for that data may be established.

Scenario 2: Moving from a single-cell multi-transport cell to a single-cell multi-transport cell

During the time when the UE is in the source cell, based on the control information associated with the single cell multi transmission related system information of the neighboring cell or the control information associated with the single cell multi transmission related system information, It is possible to confirm whether the neighboring cell that is about to be moved supports single cell multi-transmission.

Hereinafter, embodiments for providing service continuity to the RRC idle terminal will be described in detail.

As an example of a method for providing service continuity to an RRC Idle terminal, single cell multi-transmission related information for a specific group communication service / session / bearer of a neighboring cell or a neighboring base station (hereinafter referred to as a neighboring cell) For example, X2 Setup and eNB Configuration Update procedures) and / or operations, administration and maintenance (OAM).

The BS receiving the control information related to the single cell multi transmission related system information of the neighboring cell or the control information associated with the single cell multi transmission related system information or the control information capable of confirming whether the neighboring cell transmits a single cell multi- Cell multi transmission related information of the neighboring cells through the control information associated with the single cell multi transmission related system information or the control information for confirming whether the neighboring cell is transmitted by the single cell multi transmission or not by supporting the service continuity of the terminal .

Cell multi-transmission related information of neighboring cells included in the above-described X2 signaling and / or control information associated with single-cell multi-transmission related system information or single cell multi-transmission related system information to be broadcast that can be provided through the OAM, The detailed information included in the control information for confirming whether a neighbor cell is transmitted as a single cell multi-cell includes cell identification information, group identifier information (TMGI), G-RNTI, downlink service / session / bearer of a group communication service / And identification information for identifying the user.

A terminal interested in group communication may transmit neighboring cells or neighbor frequencies (neighbor frequencies) through control information associated with the above-described system information or single cell multi transmission related system information, It is possible to avoid reading single cell multi transmission related system information or related control information. Or a terminal interested in group communication may determine whether to transmit a single cell multi or a certain group of cells through control information associated with the system information or the single cell multi transmission related system information, May be aware of which group communication services are provided through communication services or single cell multi-transmission.

For example, a terminal interested in group communication or a terminal receiving group communication through single cell multi-transmission can know the physical layer cell identification information (PhysCellId) of a neighboring cell through a cell search. For example, the physical layer cell identification information may have one of 0 to 503 values. Therefore, when broadcasting single cell multi transmission related information of neighboring cells through the in-cell system information in the serving cell, the terminal can avoid reading single cell multi transmission related system information of the neighboring cell through the information.

For example, if the base station provides a single cell multi-transport (e.g., TMGI or G-RNTI or identity / differentiating information for a group communication service / session / bearer) for a particular group service / session / bearer in a serving cell When broadcasting the mapping information of the cell identification information (e.g., PhysCellId or CellIdentity) of the neighboring cell, the terminal transmits the mapping information of the adjacent cell to the neighboring cell through the physical layer cell identification information obtained (or determined) It can be seen that the neighboring cell provides a single cell multi-transport for a particular group service / session / bearer without reading the information.

As another example for the RRC idle terminal to provide service continuity, in the case of an RRC IDLE terminal, a terminal interested in group communication or a terminal receiving group communication through a single cell multi-transmission, ) Provides a single cell multi-transmission transmission for the corresponding group communication, the frequency of the corresponding cell or the corresponding cell can be set to the same priority as the frequency of the current cell or the current cell in the cell reselection procedure. For example, even if the cell reselection priority of the corresponding cell frequency is lower than the priority of the current serving cell (or the cell before reselection), the cell reselection priority is set to the current cell frequency As shown in FIG. That is, it is possible to have a cell-specific re-selection priority for the cell.

Alternatively, in the case of an RRC IDLE terminal, a terminal that is interested in group communication or a terminal that is receiving group communication through a single cell multi-transmission may transmit a single cell multi-transmission (or a reselected cell) The frequency of the corresponding cell or the corresponding cell or the frequency of providing the single cell multi-transmission may be set to the highest priority in the cell reselection procedure. For example, even if the cell reselection priority of the cell frequency or the frequency providing the single cell multi-transmission is lower than the current serving cell (or the cell before reselection), the cell reselection priority is set to the highest priority It can be set to rank. That is, it is possible to have a cell-specific re-selection priority for the cell.

Alternatively, in the case of an RRC IDLE terminal, a terminal interested in group communication or a terminal receiving group communication through a single cell multi-transmission, if the current cell provides a single cell multi-transmission for the corresponding group communication, The frequency can be considered as the highest priority.

Alternatively, in the case of an RRC IDLE terminal, a terminal interested in group communication or a terminal receiving group communication through a single cell multi-transmission may provide an MBMS service if the cell to be reselected provides MBMS transmission for the corresponding group communication Cells can be considered as the highest priority.

If the UE is interested in receiving the MBMS service or receiving the MBMS service and is able to receive the MBMS service while camping on the frequency providing the MBMS service, The frequency can be considered as the highest priority frequency. However, when a single cell multi transmission is used, a cell / base station using the same frequency can operate independently. Also, the single cell multi-transmission area may not be set according to the frequency. Therefore, even if the serving cell frequency provides a single cell multi-transmission, if the corresponding frequency is considered to be the highest priority, cell reselection may be performed to a cell that does not provide the corresponding group communication. As described above, the present invention can solve this problem by adjusting the priority for a cell providing a single cell multi-transmission or a cell receiving data through a current single-cell multi-transmission.

Meanwhile, in the above-described cell reselection procedure, a specific embodiment for setting a cell reselection priority for a cell providing a single cell multi-transmission or a cell providing a specific group communication service of interest to the terminal through a single-cell multi- As follows.

For example, if a neighboring cell provides a single cell multi-transmission for the group communication in a state where a terminal interested in group communication does not receive a single cell multi-transmission, the terminal may select the cell providing the single- Can be considered as a priority. Therefore, if the cell satisfies Squal> Threshx, HighQ or Squal> Threshx, HighP during the Treselection time interval, the cell reselection procedure can be performed with a neighbor cell having a higher priority. Here, Threshx, HighQ and Threshx, HighP denotes a preset threshold value, and Squal denotes a value indicating cell reselection quality (see 3GPP TS 36.304, Section 5.2)

As another example, if a neighboring cell provides a single cell multi-transmission for the group communication in the state that a terminal interested in group communication does not receive a single cell multi-transmission, It can be considered as the highest priority. Therefore, if a cell with a higher priority frequency satisfies Squal> Threshx, HighQ, or Squal> Threshx, HighP during the Treselection time interval, cell reselection can be performed to a neighbor cell on a higher priority frequency than the current cell.

As another example, if a neighboring cell provides a single cell multi-transmission for the group communication in the state where a terminal interested in group communication is receiving group communication through a single cell multi-transmission, the terminal provides a single cell multi-transmission Cells can be considered as high priority. Therefore, if the cell satisfies Squal> Threshx, HighQ, or Squal> Threshx, HighP during the Treselection time interval, cell reselection can be performed with neighbor cells having higher priority.

As another example, if a neighboring cell provides a single cell multi-transmission for the group communication in the state where a terminal interested in group communication is receiving group communication through a single cell multi-transmission, the terminal provides a single cell multi-transmission The cell can be considered to have the same priority as the current cell. Therefore, cell reselection can be performed based on the ranking for the cell, or based on the RSRP measurement value of the cell.

As another example, if a neighboring cell provides a single cell multi-transmission for the group communication in the state where a terminal interested in group communication is receiving group communication through a single cell multi-transmission, the terminal provides a single cell multi-transmission It can be considered to have the same priority as the frequency of the current cell. Therefore, cell reselection can be performed on the basis of the ranking or based on the RSRP measurement value of the cell, including the current cell frequency for the cell or the frequency of the cell.

Meanwhile, in order to maintain service continuity, while the terminal is in the source cell (or the current cell or the camped cell), the control information related to the single cell multi-transmission related system information of the neighboring cell or the single cell multi- When the UE recognizes that the neighboring cell to which the UE is moving does not support the single cell multi-transmission through the control information for checking whether the cell is transmitted as a single cell, the UE can request the service through the GCS AS through the unicast have. For example, after the RRC IDLE terminal sets up the RRC connection, it can request the unicast service through the GCS AS.

Hereinafter, the assignment of the group identifier information (G-RNTI) of the present invention will be described.

For example, the G-RNTI may be allocated among the currently reserved RNTI values FFF4-FFFC.

As another example, the G-RNTI may be used from 0001-003C or 003D-FFF3.

As another example, when a G-RNTI is allocated and used among a plurality of values, when a base station allocates a G-RNTI to provide a specific group communication service / session / bearer, it transmits the G-RNTI through coordination with a BM- Assigned or selected. Accordingly, the G-RNTI for a specific group communication service / session / bearer can be allocated without colliding with other base stations or other cells.

As another example, if a G-RNTI is allocated and used among a plurality of values, each base station independently allocates the G-RNTI when allocating to provide a specific group communication service / session / bearer, and when a collision occurs It can be assigned or selected via coordination.

As another example, if the G-RNTI is allocated and used among a plurality of values, the base station can allocate or select it through coordination between the base stations when allocating the G-RNTI to provide a specific group communication service / session / bearer. X2 signaling for this may be required.

As another example, if a G-RNTI is allocated among a plurality of values and the BS allocates a G-RNTI to provide a specific group communication service / session / bearer, a Temporary Mobile Group Identity (TMGI) And can be calculated and assigned. The terminal may also calculate and use the G-RNTI based on the TMGI received or preconfigured via the application server (e.g., GCS AS or BM-SC).

As another example, when the G-RNTI is allocated and used among a plurality of values, when the base station allocates the G-RNTI to provide a specific group communication service / session / bearer, it associates it with a specific group communication service / Based on the identification information for identifying the user. The terminal may also calculate and use a G-RNTI based on the identification information for identifying a particular group communication service / session / bearer received or preconfigured via an application server (e.g., GCS AS or BM-SC).

As another example, if the G-RNTI is allocated and used among a plurality of values, the base station transmits one RNTI to the UE in order to broadcast single cell multi-transmission control information including the G-RNTI of the specific group communication service / session / (Hereinafter referred to as SC-RNTI). The UE can receive the single cell multi-transport control information indicated on the PDCCH using the SC-RNTI on the PDSCH. Then, the G-RNTI associated with the specific group communication service / session / bearer can be recognized through the single cell multi-transmission control information.

Each of the embodiments of the present invention described above can be provided independently or in combination with each other.

In this case, when a cell change occurs due to movement of a UE receiving downlink multicast / groupcast / group communication data through a PDSCH radio resource shared for a specific group of UEs in one cell It is effective to provide a continuous service while reducing service interruption.

7 is a view for explaining the operation of a base station according to an embodiment of the present invention.

A method for transmitting single cell multi transmission data according to the present invention includes the steps of transmitting system information for a single cell multi transmission in a primary cell (PCell) and generating single cell multi transmission control information And transmitting single cell multi-transmission control information to the UE in the primary cell.

Referring to FIG. 7, the base station may include transmitting system information for a single cell multi-transmission in a primary cell (S710). For example, the BS transmits system information for a single cell multi-transmission through the PCs configured in the MS, and the MS can receive the system information. In one example, the base station may broadcast single cell multi-transmission related information through the system information. For example, the base station may broadcast the G-RNTI through the system information. Alternatively, the base station may broadcast the G-RNTI associated with TMGI and TMGI through the system information. Alternatively, the base station can broadcast identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer, and the associated G-RNTI through the system information. In another example, the base station may broadcast information for receiving the single cell multi-transmission control information including the G-RNTI through the system information. Alternatively, the base station may broadcast information for receiving the single cell multi-transmission control information including the G-RNTI associated with TMGI and TMGI through the system information. Alternatively, the base station may transmit identification information for identifying the downlink service / session / bearer of the group communication service / session / bearer through the system information, information for receiving the single cell multi-transmission control information including the associated G- Lt; / RTI >

In addition, the base station may include generating single cell multi-transmission control information (S720). The single cell multi-transmission control information may include information about neighboring cells providing single cell multi-transmission. Or the single cell multi-transmission control information may include information about the group communication service that each cell can provide. Alternatively, the single cell multi-transmission control information may include the correspondence information of the group communication service and the cell. For example, the single-cell multi-transmission control information includes cell identification information, a Temporary Mobile Group Identity (TMGI), and a group identifier information (Group-RNTI) for a neighbor cell providing a single cell multi- And neighbor cell information providing a single cell multi-transport associated with the RNTI.

In addition, the base station may include transmitting the single cell multi-transmission control information to the UE in the primary cell (S730). The single cell multi-transmission control information may be transmitted at a timing scheduled by the system information for single cell multi-transmission. For example, the base station may include scheduling information such as a period and offset value information for receiving control information in the system information, and may transmit the control information according to the scheduling information. The single cell multi-transmission control information may be indicated via the PDCCH. Through this, the terminal can acquire information about neighboring cells providing the group communication service of interest. Alternatively, the terminal may verify information about neighboring cells providing a single cell multi-transport.

Meanwhile, the UE can confirm whether the neighbor cell provides a single cell multi-transport using the received single cell multi-transport control information. Alternatively, the terminal may check which group communication service the neighboring cell provides. Or the terminal can identify the neighboring cell that the terminal is providing the group communication service of interest. Alternatively, the terminal may identify a cell providing a single cell multi-transmission. Accordingly, even if the UE does not check the system information of the neighboring cell, the UE can confirm whether the neighboring cell is transmitting a single cell or whether the UE provides interest group communication.

Also, the UE can use the cell reselection procedure by setting the frequency of the cell providing the single cell multi-transport to the highest priority. Alternatively, the UE may set the priority of the cell according to the cell reselection priority setting procedure in the cell reselection procedure described above, and may perform the cell reselection procedure according to the priority.

Accordingly, the BS in the RRC Idle state can check whether a neighbor cell is transmitted as a single cell through the serving cell without checking whether the neighbor cell is transmitted as a single cell using the system information or control information of the neighboring cell have. Also, by setting the priority of the frequency of the cell providing the single cell multi-transmission to the highest, the terminal can receive the group communication service continuously even when reselecting the cell.

A configuration of a terminal and a base station capable of performing a part or all of the operations of the present invention will be briefly described.

8 is a diagram illustrating a configuration of a terminal according to another embodiment of the present invention.

Referring to FIG. 8, a UE 800 receiving single cell multi-transmission data according to the present invention receives system information for a single cell multi-transmission in a primary cell and receives single-cell multi-transmission control information in a primary cell And a control unit 810 for checking whether a single cell multi-transmission is provided to a neighboring cell using the single cell multi-transmission control information.

Also, the receiver 830 can receive the single cell multi-transmission control information indicated through the PDCCH. The single cell multi-transmission control information is associated with cell identification information, a Temporary Mobile Group Identity (TMGI), and a group identifier information (Group-RNTI, G-RNTI) for a neighboring cell providing a single cell multi- And neighbor cell information providing a single cell multi-transmission. The single cell multi-transmission control information may be scheduled by the system information. In addition, the receiver 830 receives downlink control information, data, and messages from the base station through the corresponding channel.

In addition, the controller 810 may set the frequency of the cell providing the single cell multi-transmission to the highest priority to perform the cell reselection procedure.

In addition, the controller 810 receives the downlink multicast / groupcast / group communication data through the PDSCH necessary for performing the above-described present invention, or the RRC IDLE terminal performs PDSCH while minimizing the service interruption according to the cell- And controls the overall operation of the terminal 800 in response to receiving the multicast / group cast / group communication data through the terminal.

Meanwhile, if the neighboring cell does not provide a single cell multi-transmission, the transmitter 820 may transmit information requesting reception of the group communication service through unicast. The request information may be sent to the serving cell or neighbor cell or GCS AS. In addition, the transmitter 820 transmits uplink control information, data, and a message to the base station through the corresponding channel.

9 is a diagram illustrating a configuration of a base station according to another embodiment of the present invention.

9, the base station 900 of the present invention includes a controller 910 for generating single cell multi-transmission control information, a base station 900 for transmitting system information for a single cell multi-transmission in a primary cell, And a transmitter 920 for transmitting the multi-transmission control information to the terminal.

The transmitter 920 can instruct the transmission of the single cell multi transmission control information through the PDCCH. The single cell multi-transmission control information is associated with cell identification information, a Temporary Mobile Group Identity (TMGI), and a group identifier information (Group-RNTI, G-RNTI) for a neighboring cell providing a single cell multi- And neighbor cell information providing a single cell multi-transmission. The single cell multi-transmission control information may be scheduled by the system information.

The receiving unit 930 can receive a group communication service request through unicast from the terminal.

The control unit 910 transmits the downlink multicast / groupcast / group communication data through the PDSCH required to perform the above-described present invention, and the RRC IDLE terminal performs multi- And controls the overall operation of the base station 900 in accordance with the transmission of the cast / group cast / group communication data.

In addition, the transmitting unit 920 and the receiving unit 930 are used to transmit and receive signals, messages, and data necessary for carrying out the present invention to and from the terminal.

The standard content or standard documents referred to in the above-mentioned embodiments constitute a part of this specification, for the sake of simplicity of description of the specification. Therefore, it is to be understood that the content of the above standard content and some of the standard documents is added to or contained in the scope of the present invention, as falling within the scope of the present invention.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

Claims (20)

A method for a terminal to receive single cell multi-transmission data,
Receiving system information for a single cell point-to-multipoint in a primary cell (PC);
Receiving single cell multi-transmission control information in the primary cell; And
Determining whether a neighbor cell is provided with a single cell multi-transmission using the single cell multi-transmission control information,
Wherein the single cell multi-transmission control information comprises:
Neighbor cell information received over a Physical Downlink Shared CHannel (PDSCH) and providing a single cell multi-transport associated with group identifier information (Group-RNTI, G-RNTI). The method according to claim 1,
Wherein the single cell multi-transmission control information comprises:
Cell identification information and a Temporary Mobile Group Identity (TMGI) information for a neighboring cell providing a single cell multi-transmission. The method according to claim 1,
Wherein the single cell multi-transmission control information comprises:
(PDCCH), and is scheduled according to the system information. The method according to claim 1,
If the neighboring cell does not provide a single cell multi-transport,
Further comprising requesting reception of the group communication service via unicast before the cell change. The method according to claim 1,
Further comprising performing a cell reselection procedure by setting a frequency of a cell providing the single cell multi-transmission to the highest priority. A method for a base station to transmit single cell multi-transmission data,
Transmitting system information for a single cell point-to-multipoint in a primary cell (PC);
Generating single cell multi-transmission control information; And
And transmitting the single cell multi-transmission control information to the UE in the primary cell,
Wherein the single cell multi-transmission control information comprises:
Wherein the neighbor cell information is transmitted through a Physical Downlink Shared CHannel (PDSCH) and provides a single cell multi-transport associated with group identifier information (Group-RNTI, G-RNTI). The method according to claim 6,
Wherein the single cell multi-transmission control information comprises:
Cell identification information and a Temporary Mobile Group Identity (TMGI) information for a neighboring cell providing a single cell multi-transmission. The method according to claim 6,
Wherein the single cell multi-transmission control information comprises:
(PDCCH), and is scheduled according to the system information. The method according to claim 6,
The terminal,
And determining whether a neighbor cell is provided with a single cell multi-transmission using the single cell multi-transmission control information. The method according to claim 6,
The terminal,
Wherein the cell reselection procedure is performed by setting the frequency of the cell providing the single cell multi-transmission to the highest priority. In a terminal receiving single cell multi transmission data,
A receiving unit for receiving system information for a single cell point-to-multipoint in a primary cell and receiving single cell multi-transmission control information in the primary cell; And
And a controller for checking whether a single cell multi-transmission is provided to a neighboring cell using the single cell multi-transmission control information,
Wherein the single cell multi-transmission control information comprises:
And neighbor cell information received through a Physical Downlink Shared CHannel (PDSCH) and providing a single cell multi-transport associated with group identifier information (Group-RNTI, G-RNTI). 12. The method of claim 11,
Wherein the single cell multi-transmission control information comprises:
Wherein the mobile terminal comprises at least one of cell identification information for a neighboring cell providing a single cell multi-transmission and temporary group identity information (TMGI). 12. The method of claim 11,
Wherein the single cell multi-transmission control information comprises:
(PDCCH), and is scheduled according to the system information. 12. The method of claim 11,
Further comprising a transmitter for requesting reception of a group communication service through unicast before a cell change if the neighboring cell does not provide a single cell multi-transmission. 12. The method of claim 11,
Wherein,
Wherein a cell reselection procedure is performed by setting a frequency of a cell providing the single cell multi-transmission to the highest priority. A base station for transmitting single cell multi-transmission data,
A control unit for generating single cell multi transmission control information; And
A transmission unit for transmitting system information for a single cell point-to-multipoint in a primary cell and transmitting the single cell multi-transmission control information in the primary cell to a terminal; , ≪ / RTI &
Wherein the single cell multi-transmission control information comprises:
And neighbor cell information transmitted through a PDSCH (Physical Downlink Shared CHannel) and providing a single cell multi-transport associated with group identifier information (Group-RNTI, G-RNTI). 17. The method of claim 16,
Wherein the single cell multi-transmission control information comprises:
Wherein the mobile station comprises at least one of cell identification information for a neighboring cell providing a single cell multi-transmission and Temporary Mobile Group Identity (TMGI). 17. The method of claim 16,
Wherein the single cell multi-transmission control information comprises:
(PDCCH), and is scheduled according to the system information. 17. The method of claim 16,
The terminal,
Wherein the mobile station checks whether a neighbor cell is provided with a single cell multi-transmission using the single cell multi-transmission control information. 17. The method of claim 16,
The terminal,
And the cell reselection procedure is performed by setting the frequency of the cell providing the single cell multi-transmission to the highest priority.

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