KR20160040418A - Methods for transmitting system information and Apparatuses thereof - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system information transmission / reception method and apparatus for a MTC (Machine Type Communication) terminal. More particularly, the present invention relates to a method for transmitting system information for an MTC terminal to support a low complexity UE category / type for operation of the MTC terminal. In particular, the present invention provides a method for receiving system information from a MTC (Machine Type Communication) terminal, comprising the steps of: receiving a Master Information Block (MIB) and a System Information Block 1 (SIB1) Checking the scheduling information included in the master information block or the system information block 1, and repeatedly receiving one or more system information blocks excluding the system information block 1 based on the scheduling information.

Description

[0001] METHOD AND SYSTEM FOR TRANSMITTING SYSTEM INFORMATION [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a system information transmission / reception method and apparatus for a MTC (Machine Type Communication) terminal. More particularly, the present invention relates to a method for transmitting system information for an MTC terminal to support a low complexity UE category / type for operation of the MTC terminal.

Machine type communication (hereinafter referred to as "MTC" communication) is a type of data communication in which one or more entities represent a machine to machine communication that does not necessarily require human interaction . MTC communication that does not require human interaction refers to all communication methods in which communication is performed without human intervention in the communication process.

The MTC terminal can be installed in a place where the radio wave environment is worse than that of a general terminal. It may be necessary to repeatedly transmit control information and / or data of each physical channel transmitted only in one subframe in a plurality of subframes in order for the MTC terminal to operate in a place where the radio wave environment is worse than that of a general terminal.

In addition, the MTC terminal may be required to limit the use of radio resources. That is, it can be set to use only some frequency resources or some time resources.

In this case, system information transmission / reception of a general terminal using the LTE communication method can not be normally performed.

In the background described above, the present invention proposes a method and apparatus capable of efficiently transmitting system information blocks even when time and frequency resource resources available to the MTC terminal are limited.

In addition, the present invention proposes a method and an apparatus for newly defining a system information block including dedicated system information for the MTC terminal and repeatedly transmitting the corresponding MTC dedicated system information block.

According to an aspect of the present invention, there is provided a method of receiving system information by a MTC (Machine Type Communication) terminal, including a master information block (MIB) and a system information block (SIB1) ), Checking the scheduling information contained in the master information block or the system information block 1, and repeatedly receiving one or more system information blocks excluding the system information block 1 based on the scheduling information .

In addition, the present invention provides a method for transmitting system information in a base station, the method comprising the steps of: receiving a master information block (MIB) or a system information block (SIB1) for a MTC (Machine Type Communication) And transmitting the master information block and the system information block 1 and repeatedly transmitting one or more system information blocks except for the system information block 1 based on the scheduling information .

The present invention also provides a MTC (Machine Type Communication) terminal for receiving system information, comprising: a receiving unit for receiving a master information block (MIB) and a system information block (SIB1) Block or system information block 1. The MTC terminal device repeatedly receives one or more system information blocks except the system information block 1 based on the scheduling information.

According to another aspect of the present invention, there is provided a base station for transmitting system information, which includes a master information block (MIB) for a MTC (Machine Type Communication) terminal or a scheduling information included in a system information block (SIB1) And a transmitter for transmitting the master information block and the system information block 1 and for repeatedly transmitting one or more system information blocks except for the system information block 1 based on the scheduling information.

According to the present invention, there is provided an apparatus and method for efficiently transmitting a system information block even in a situation where time and frequency axis resources available to the MTC terminal are limited.

According to another aspect of the present invention, there is provided a method and apparatus for newly defining a system information block including dedicated system information for a MTC terminal and repeatedly transmitting the corresponding MTC dedicated system information block.

1 is a diagram showing a procedure of transmitting system information.
2 is a view for explaining the operation of the MTC terminal according to an embodiment of the present invention.
3 is a diagram for explaining a terminal operation according to the first embodiment of the present invention.
4 is a diagram illustrating a SIB repetitive transmission method according to the method 1 in the second embodiment of the present invention.
5 is a diagram illustrating a SIB repeat transmission method according to a method 2 in the second embodiment of the present invention.
6 is a diagram illustrating a SIB repetitive transmission method according to the method 3 in the second embodiment of the present invention.
7 is a diagram illustrating a SIB repeat transmission method according to the method 4 in the second embodiment of the present invention.
8 is a diagram for explaining a terminal operation according to the second embodiment of the present invention.
FIG. 9 is a diagram illustrating an information element of a master information block including a field indicating whether or not coverage enhancement support of the present invention is supported.
10 is a diagram illustrating an SIB repeat transmission method according to a third embodiment of the present invention.
11 is a diagram for explaining a terminal operation according to the third embodiment of the present invention.
12 is a view for explaining a base station operation according to another embodiment of the present invention.
13 is a diagram illustrating a terminal configuration according to another embodiment of the present invention.
14 is a diagram illustrating a base station configuration 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 numerals even though 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, the base station or the cell in this specification is interpreted as a comprehensive meaning indicating a partial region or function covered by BSC (Base Station Controller) in CDMA, NodeB 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) a device itself providing a megacell, a macrocell, a microcell, a picocell, a femtocell, or a small cell in relation to a wireless region, or ii) 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 PDSCH, and uplink data channel 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.

According to a method for transmitting and receiving a downlink radio signal and a radio channel between a base station and a terminal defined in a conventional 3GPP LTE / LTE-Advanced system, in the case of an arbitrary RRC connected terminal, all downlink subframes (or DRX (Common Search Space) and USS (UE-specific Search Space) configured through PDCCH or EPDCCH, which are downlink control channels of the downlink control channel of the UE in the DRX on period, Scheduling information for broadcasting / multicasting traffic such as SIB (System Information Block), RAR (Random Access Response), and paging message, and scheduling information for unicasting traffic for the corresponding terminal have. Accordingly, the UE is defined to be able to receive broadcasting / multicasting messages and unicasting messages through all downlink subframes.

Specifically, a method of configuring a CSS for transmitting scheduling information for a broadcasting / multicasting message for an arbitrary terminal in a PDCCH or EPDCCH transmitted through an arbitrary downlink subframe, and a method of transmitting scheduling information for a unicasting message For the method of USS configuration, refer to 3GPP TS 36.213 document.

MTC  Low complexity for operation Terminal category / type (Low complexity UE  category / type for MTC operation)

As LTE or LTE-Advanced networks spread, mobile operators want to minimize the number of Radio Access Terminals (RATs) to reduce network maintenance costs. Meanwhile, the number of MTC products based on the conventional GSM / GPRS network is increasing, and a MTC terminal using a low data rate can be provided at low cost. Therefore, there is a problem that two RATs must be operated when using a LTE / LTE-Advanced network for general data transmission and a GSM / GPRS network for MTC terminal. In addition, this is a problem in terms of profitability and efficiency of the mobile communication carrier due to inefficient utilization of the frequency band.

In order to solve such a problem, a cheap MTC terminal using a GSM / EGPRS network should be replaced with an MTC terminal using an LTE / LTE-Advanced network. To this end, a variety of techniques for lowering the price of an LTE / LTE- Requirements are being discussed. In addition, various functions are being studied to satisfy the discussed requirements. That is, there is a need for defining a low complexity UE category / type that reflects various requirements to lower the price of LTE MTC terminals.

In addition, about 20% of MTC terminals supporting MTC services such as smart metering are installed in a deep indoor environment such as a basement, so that for successful MTC data transmission, It should be improved by about 15dB compared with the coverage of general LTE / LTE-Advanced terminal. Also, considering the performance degradation due to the above technique, the coverage of the LTE MTC terminal should be improved by more than 15 dB.

In order to improve the coverage while lowering the LTE / LTE-Advanced MTC terminal price, a robust transmission such as PSD boosting, low coding rate and time domain repetition, It is necessary to develop various technologies for

Specifically, the requirements of the low complexity UE category / type for MTC operation are as follows.

Reduced UE bandwidth of 1.4 MHz in downlink and uplink.

◆ Bandwidth reduced UEs should be able to operate within any system bandwidth.

◆ Frequency multiplexing of bandwidth reduced UEs and non-MTC UEs should be supported.

◆ The UE only needs to support 1.4 MHz RF bandwidth in downlink and uplink.

■ Reduced maximum transmit power.

Reduced support for downlink transmission modes.

● further UE processing relaxations

◆ Reduced maximum transport block size for unicast and / or broadcast signaling.

◆ Reduced support for simultaneous reception of multiple transmissions.

◆ Relaxed transmit and / or receive EVM requirements including restricted modulation scheme. Reduced physical control channel processing (e.g., reduced number of blind decoding attempts).

Reduced physical data channel processing (e.g., relaxed downlink HARQ time line or reduced number of HARQ processes).

◆ Reduced support for CQI / CSI reporting modes.

● Target a relative LTE coverage improvement - corresponding to 15 dB for FDD - for the UE category / type defined above and other UEs operating delay tolerant MTC applications with respect to their respective nominal coverage.

● Provide power consumption reduction for the UE category / type defined above, both in normal coverage and enhanced coverage, to target ultra-long battery life:

In the present invention, new coverage enhancement and coverage enhancement and low complexity UE category / type satisfying the above-mentioned conditions for MTC operation are simply described in the MTC terminal for convenience of explanation.

System information transmission

1 is a diagram showing a procedure of transmitting system information.

The system information includes a master information block (MIB) and a plurality of system information blocks (SIBs).

The terminal 100 receives the MIB from the base station 110 (S101). The MIB contains essential information and has a 40ms period. The MIB is transmitted in a subframe # 0 of a radio frame having SFN mod 4 = 0, and the other radio frames are repetitively transmitted in a subframe # 0.

Thereafter, the terminal 100 receives SIB1 from the base station 110 (S102). SIB1 has a period of 80 ms and is repeatedly transmitted within an interval of 80 ms. That is, it is transmitted to subframe # 5 of a radio frame having SFN mod 8 = 0, and is repeatedly transmitted to subframe # 5 for a radio frame having SFN mod 2 = 0.

The terminal 100 can receive the remaining SIBs except SIB1 (S103). SIB messages (e.g., SIB2, 3, 4, ...) other than SIB1 are transmitted in a System Information (SI) message. The mapping information for SI messages of each SIB is included in SIB1. When the terminal 100 receives the SIB1, it can know when other SIBs are transmitted. Each SIB is included in one SI message. One SI message may contain several SIBs with the same period. Multiple SI messages may have the same period. SI messages are transmitted in an SI window, one SI message being associated with an SI window. Only one SI message can be transmitted in one SI window. Repetitive transmission of the SI message within the SI window can be performed freely.

In the case of the above-mentioned MTC terminal, when operating in an LTE network based on any system band (for example, 5 MHz, 10 MHz, 20 MHz, etc.) except for 1.4 MHz due to the characteristic of UE RF bandwidth reduction limited to 1.4 MHz, (For example, SIB, paging) can not be received. That is, in the case of the MTC terminal, there is a problem that signals according to the existing SIB transmission method can not be normally received due to the bandwidth limitation.

Accordingly, the present invention proposes a method for efficiently transmitting an SIB for the MTC terminal. In particular, it prevents all existing SIBs and the like from being repetitively unnecessarily repetitious, thereby enabling the base station to efficiently manage radio resources.

2 is a view for explaining the operation of the MTC terminal according to an embodiment of the present invention.

A method for receiving system information includes receiving a Master Information Block (MIB) and a System Information Block 1 (SIB1) Checking the scheduling information included in the block or system information block 1, and repeatedly receiving one or more system information blocks except for the system information block 1 based on the scheduling information.

Referring to FIG. 2, the MTC terminal includes a step of receiving an MIB and an SIB1 (S210). For example, the MIB or SIB1 may include information on whether the cell transmitting the corresponding information is a cell supporting the operation of the MTC terminal. Specifically, the MIB or SIB1 may include indication information indicating whether or not the corresponding cell supports the MTC terminal. The MTC terminal can determine whether to use the corresponding cell by using the instruction information. Alternatively, the SIB1 may be received when the corresponding cell is a cell supporting the MTC terminal after the MIB is received. Alternatively, the MTC terminal may check whether the corresponding cell supports the MTC terminal according to the transmission format of the MIB or SIB1. For example, if the SIB1 is repeatedly received a predetermined number of times, the MTC terminal may determine that the corresponding cell supports the MTC terminal.

In addition, according to each embodiment, the SIB1 may be SIB1, which is set to be dedicated to the MTC terminal, unlike the SIB1 of the existing general terminal. The general terminal means an existing LTE or LTE-Advanced terminal to which the above-mentioned MTC operating condition is not applied.

The receiving method of the MIB and the SIB1 will be described in detail in the following embodiments.

Meanwhile, the MTC terminal includes a step of checking the scheduling information included in the MIB or SIB1 (S220). The MTC terminal can confirm the scheduling information on the system information included in the MIB or SIB1. For example, the MTC terminal can confirm the scheduling information for receiving the system information blocks except the SIB1 through the MIB or SIB1. Hereinafter, as described in each embodiment, the scheduling information may include information related to repetitive transmission of system information blocks except SIB1 and radio resource mapping. For example, the scheduling information may include at least one of a time when at least one system information is transmitted, frequency-domain radio resource information, and repeated transmission-related information. In another example, the scheduling information includes at least one of type information of each of one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, It may contain more than one piece of information. As another example, the scheduling information may include at least one of window size information of the system information message and system information message scheduling information including subframe information repeatedly transmitted within the window size. Here, the system information message may include one or more system information blocks having the same period. The above-described SIB1 and one or more system information blocks may include MTC terminal dedicated system information transmitted repeatedly a predetermined number of times. That is, the SIBs including SIB1 may be newly defined SIBs for the MTC terminal. Alternatively, the SIBs other than the SIB1 may be a newly defined SIB for the MTC terminal. The information included in the scheduling information and the terminal operation accordingly will be described in more detail in the following embodiments.

The MTC terminal may repeatedly receive one or more system information blocks except SIB1 based on the scheduling information (S230). For example, the MTC terminal can receive the remaining SIBs except SIB1 based on the received scheduling information. As described above, SIBs other than SIB1 may be those defined for the MTC terminal only. In addition, the SIBs can be repeatedly received at a predetermined number of times. That is, the SIBs can be repeatedly transmitted according to the number of times determined according to the coverage level of the MTC terminal.

Through the above-described operation, the MTC terminal can receive the system information for the MTC terminal. Hereinafter, each embodiment of the present invention will be described in more detail with reference to the drawings. Hereinafter, for convenience of understanding, in the case of the MTC-dedicated SIB distinguished from the existing SIB, SIB1A and SIB2A will be described with an A character after the SIB type number. However, this is for convenience of description and understanding, and is not limited to the corresponding notation.

First Embodiment

After receiving the MIB, the MTC terminal according to the first embodiment of the present invention receives the newly defined SIB1 for the MTC terminal. As described above, in the case of the SIB set for the MTC terminal, since SIB type number is followed by A, it is indicated as SIB1A.

The SIB1A set for the MTC terminal can always be transmitted using fixed radio resources at regular intervals. For example, SIB1A may be transmitted in one or more subframes of a radio frame with SFN mod N = 0 (N is an integer), and repetition transmission of the corresponding SIB1A may be transmitted in radio frames between transmission periods . The corresponding radio frame can be selected and transmitted in the form of SFN mod M = 0 (M is an integer). The SIB1A may contain only information necessary for the MTC terminal. That is, at least one of size information of MTC dedicated SIBs, scheduling information, ac-barring setting information, extended access barring information, cell reselection information, and neighbor cell information may be included. The SIB 1 A may be composed of several SIB messages. Also, the SIB 1A and the like may be set to a fixed size.

3 is a diagram for explaining a terminal operation according to the first embodiment of the present invention. The operation of the terminal according to the first embodiment will be described with reference to FIG.

The MTC terminal receives the MIB (S300).

The MIB may include indication information about whether the corresponding cell supports the MTC terminal. That is, when the corresponding cell performs an operation such as iterative transmission for the MTC terminal, corresponding instruction information may be received in the MIB.

The MTC terminal determines whether the corresponding cell supports the MTC terminal using the MIB indication information (S310).

For example, if the MTC terminal does not support the MTC terminal, the MTC terminal receiving the MIB considers the current cell to be a barred cell and performs a cell reselection procedure (S320). That is, the MTC terminal can select a cell by selecting another frequency having the same priority as the frequency of the current cell, or can select a cell with a lower priority frequency. The MTC terminal performs step S300 again for the selected cell.

If the corresponding cell supports the MTC terminal, the MTC terminal receives the SIB1 according to the information of the MIB (S330). Here, SIB1 received by the MTC terminal means SIB1A set for the MTC terminal. Meanwhile, the MTC terminal may acquire information on whether the corresponding cell supports the MTC terminal by another method. For example, whether or not the cell supports the MTC terminal may be determined through an attempt to receive an MTC-dedicated SIB transmitted using a fixed resource such as SIB1 or SIB1A. That is, if the SIBs successfully received using the fixed resource are successfully received, the mobile station may determine that the corresponding cell supports the MTC terminal.

On the other hand, the SIB 1A can always be transmitted using a fixed frequency resource at a predetermined period (for example, 80 ms). The SIB1A may also be set to a fixed size. For example, if the transmission period of SIB1A is 80 ms, SIB1A transmission occurs in the radio frame having SFN mod8 = 0. In addition to the radio frame in which the SIB 1A is transmitted according to the transmission period, the SIB 1A can be repetitively transmitted in the remaining radio frames. Also, the SIB 1A may be repetitively transmitted within the corresponding radio frame to which the SIB 1A is transmitted. Repetitive transmissions within one radio frame may occur in one or more predefined subframes. The repetitive transmission pattern may be determined according to the number of repeated transmissions or the coverage enhancement level set in the MIB. Or may be transmitted in a predefined maximum number of repetitive transmissions.

In order to receive the remaining SIBs except for the SIB1A, the MTC terminal can confirm the scheduling information of the MTC-dedicated SIBs (S340).

For example, if there are a plurality of MIB-dedicated SIBs, the MTC terminal receives SIB2A, SIB2, 3, 4 ... The MIB dedicated SIBs may be additionally received in accordance with the MTC help information or the scheduling information of the SIB 1A (S350). The MTC help information or scheduling information of the SIB1A may be the scheduling information described in FIG. 2 or below.

Second Example

The MTC terminal of the present invention can receive the MTC dedicated SIB based on the scheduling information of the SIB1 without receiving the existing SIBs such as SIB2, 3 and 4 after receiving the SIB1 or SIB1A. Alternatively, the MTC terminal can receive the MTC dedicated SIB through the PDCCH or the Downlink Control Information (DCI) of the EPDCCH. Alternatively, the MTC terminal may receive the MTC-dedicated SIBs by combining two pieces of information, SIB1 and DCI. In case of PDCCH or EPDCCH, the corresponding MTC terminals may attempt to receive using the newly defined MTC-SI-RNTI. The SIB1 including the MTC dedicated SIB scheduling information may be the existing SIB1 or the SIB1A newly defined for the MTC only.

On the other hand, MTC dedicated SIBs can be set to a fixed size and can be transmitted using fixed frequency resources. In addition, each SIB may include indication information for distinguishing SIBs. For example, indication information such as 00 for SIB2A and 01 for SIB3A may be included in SIBs.

Meanwhile, SIB1 or SIB1A may include scheduling information for MTC dedicated SIBs. The scheduling information may include at least one of a time when at least one system information is transmitted, frequency-axis radio resource information, and repeated transmission-related information. More specifically, the scheduling information includes at least one of type information of each of the one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, Lt; / RTI > information.

For example, each piece of information that can be included in the scheduling information is as follows.

≪ Release-13 Scheduling information for MTC-dedicated SIBs >

- SIB type information: Includes type information for each SIB. For example, information that can distinguish types such as SIB2A, SIB3A, and SIB4A.

- SIB periodicity information for each SIB: Includes information on the transmission period of each SIB.

- Sub-frame number or offset value information: Information on the number of the sub-frame in which the first SIB transmission occurs or an offset value indicating the starting sub-frame.

- Repeated transmission count information: Includes the number of repeated transmissions or the number of repetitions within the transmission period.

- Coverage enhancement Level information: Includes values that are broken down into a set of steps to support coverage enhancement.

- Repetition periodicity information: It contains the value for repetition transmission period in which the same SIB is transmitted within the SIB transmission period. may be directly expressed in units of ms, or expressed in the form of SFN mod N (N is an integer).

- Radio frame information repeatedly transmitted within the period: It contains information indicating the radio frame in which the repeated transmission occurs within the transmission period. For example, the information may be included in a bitmap, a list of subframe numbers, an even / odd subframe, a repetition period, and the like.

- Repeated subframe information within one radio frame: Contains information indicating the subframe repeatedly transmitted in one radio frame. For example, a bitmap, a list of subframe numbers, an even / odd subframe, a repetition period, and the like.

- frequency resource information to which the corresponding SI message or SIB is to be transmitted: frequency resource location to which the SI message or SIB is to be transmitted, frequency hopping information.

- Transport Block Size (TBS) of the corresponding SI message or SIB: It may contain the TBS index value of the corresponding SI message or SIB.

If necessary, the scheduling information may further include information required by the MTC terminal such as ac-barring (Access Class-Barring) setup information, extended access barring information, cell reselection information, and neighbor cell information.

The MTC dedicated SIBs may be transmitted at regular intervals (for example, 20 ms, 50 ms, 100 ms, 500 ms, etc.) according to the contents set in SIB1 or SIB1A.

Each detail method of the second embodiment will be described below. Hereinafter, SIB1 will be referred to as SIB1 for convenience of description, but SIB1 can be used to mean SIB1 newly defined for the conventional SIB1 or the MTC terminal described in the first embodiment. In addition, the MTC dedicated SIB means the remaining SIBs except for the above-mentioned SIB1 for convenience of explanation.

Method 1

4 is a diagram illustrating a SIB repetitive transmission method according to the method 1 in the second embodiment of the present invention.

Referring to FIG. 4, if a value indicating the number of times of repeated transmission is included in the scheduling information for the MTC-dedicated SIB of the SIB1 or the SIB1A, the MTC-dedicated SIBs repeatedly transmit according to the number of repetitive transmissions within the corresponding period . That is, transmission occurs every time from the start sub-frame to every (SIB transmission period) / (repeated transmission number). The repetitive transmission count information may be included in the MIB, not SIB1 or SIB1A. For example, when the SIB periodicity is 20 ms and the number of repetitive transmissions is set to 20, repetition transmission occurs in every subframe starting from the start subframe with 20/20 = 1. If the transmission period is 100 ms and the number of repetitive transmissions is set to 10, the MTC dedicated SIB is repeatedly transmitted in the set subframe (every one subframe in FIG. 4) every 100 ms with 100/10 = 10 lt; / RTI >

Method 2

5 is a diagram illustrating a SIB repeat transmission method according to a method 2 in the second embodiment of the present invention.

Referring to FIG. 5, if a value indicating a coverage enhancement level is included in the scheduling information for the MIB dedicated SIB of the SIB1 or the SIB1A, the MTC dedicated SIBs are classified according to the number of repetitive transmissions corresponding to the corresponding level It can be repeatedly transmitted. Alternatively, the coverage enhancement level value may be information contained in the MIB, not SIB1 or SIB1A. For example, if the Coverage Enhancement level is set to 2, iterative transmission may be performed according to the number of repetitive transmissions according to a preset coverage level. That is, in the case of the coverage enhancement level 2, if the number of repetitive transmissions is mapped to 10, repetitive transmissions can be generated every set time (SIB transmission period) / (repeated transmission number) starting from the set starting sub-frame. In addition, the number of repetitive transmissions according to the coverage enhancement level can be broadcast for setting and changing through the SIB.

Method 3

6 is a diagram illustrating a SIB repetitive transmission method according to the method 3 in the second embodiment of the present invention.

Referring to FIG. 6, if the repeated transmission period value is included in the scheduling information for the MIB-dedicated SIB of the SIB1 or SIB1A, the MTC-dedicated SIBs are repetitied according to the repetition period from the set subframe within the corresponding period, . For example, if the transmission period (SIB periodicity) is 100 ms and the repetition periodicity is 10 ms, repetition may occur every 10 ms from the set start sub-frame. That is, as shown in FIG. 6, when the starting subframe is the subframe number # 1 and the repetition period is 10 ms, the MTC-dedicated SIBs are repeatedly transmitted within a transmission period of 100 ms with a period of 10 ms. Therefore, the subframe # 1 of SFN = 0, the subframe # 1 of SFN = 1, the subframe # 1 of SFN = 2, .

Method 4

7 is a diagram illustrating a SIB repeat transmission method according to the method 4 in the second embodiment of the present invention.

7, when radio frame information and subframe information in which repeated transmission occurs in the scheduling information for the MTC-dedicated SIB of the SIB1 or the SIB1A are included, the MTC-dedicated SIBs are allocated to the radio frame and subframe Lt; / RTI > For example, if the SIB periodicity is 100 ms, and the radio frame information in which repetitive transmission occurs is 2, 4, 6, 8, and the subframe information is set to 3, 6, 2, SFN = 4, SFN = 6, and SFN = 8 in the third and sixth subframes of the radio frame. If only the subframe information is included, the MTC-dedicated SIBs are repetitively transmitted in the set subframe of every radio frame within the corresponding period.

As described in Method 1 to Method 4 above, MTC dedicated SIBs can be set to repeat transmission based on scheduling information that can be included in SIB1 or SIB1A or MIB. Therefore, the repetitive transmission can be performed by any one of the methods 1 to 4 according to the type or type of information included in the scheduling information. Or the methods 1 to 4 described above may be performed in a mutual combination or a part of methods 1 to 4 mutually combined according to each information included in the scheduling information. In addition, the MTC terminal of the present invention can check repeated transmission resources of the MTC-dedicated SIB based on the information included in the scheduling information according to how the scheduling information is configured.

Meanwhile, the size and frequency resource information of the SIBs described above can be set through SIB1A together with time resource information. Alternatively, the above-described SIBs can be of fixed size and can be transmitted using fixed frequency resources. It may also be scheduled through the DCI of the PDCCH or EPDCCH. In case of PDCCH or EPDCCH, the corresponding MTC terminals attempt to receive using the newly defined MTC-SI-RNTI.

Dedicated SIBs for each MTC terminal may include indication information for distinguishing SIBs. For example, instruction information such as SIB2A having a value of "00" and SIB3A having a value of "01" may be included in each SIB.

The repetitive transmission operation described above can be applied not only to SIB transmission, but also to a paging message and a RAR (Random Access Response) message.

Hereinafter, the operation of the MTC terminal according to the second embodiment will be described with reference to the drawings.

8 is a diagram for explaining a terminal operation according to the second embodiment of the present invention. Here, SIB1 may mean SIB1A described above.

The MTC terminal of the present invention receives the MIB and SIB1 (S800). For example, in the MIB or SIB1, indication information indicating whether the corresponding cell supports the MTC terminal may be included. That is, it may include indication information indicating whether the corresponding cell performs a repetition transmission operation for the MTC terminal. In this case, it broadcasts to the MIB or SIB1 through the corresponding instruction information.

In one example, the indication information may comprise an information field that includes information about whether the cell supports coverage enhancement. For example, the indication information may be added to the MIB or SIB1 as an information element as shown in Table 1. In Table 1, the field including the instruction information is described as the coverage enhancement field, but the name is not limited thereto.

FIG. 9 is a diagram illustrating an information element of a master information block including a field indicating whether or not coverage enhancement support of the present invention is supported.

Referring to FIG. 9, the above-described coverage enhancement field may be added to the information element of the MIB. The value of the coverage enhancement field added to the MIB may be a BIT STRING or an INTEGER value. The size of the field is 1, 2, 3 ... And the like.

On the other hand, when the instruction information is included in SIB1, the case of MIB described above can be applied. That is, a specific field for containing instruction information can be added to SIB1.

The MTC terminal can determine whether the corresponding cell is a cell supporting the MTC terminal by using the above-described instruction information (S810).

For example, if the corresponding cell does not support the MTC terminal, the MTC terminal that received the MIB or SIB1 determines that the current cell is a barred cell and performs a cell reselection procedure (S820). That is, the MTC terminal can select a cell by selecting another frequency having the same priority as the frequency of the current cell, or can select a cell with a lower priority frequency. The process of step S800 is performed again for the selected cell.

As another example, when the corresponding cell supports the MTC terminal, SIB1 can be received based on the MIB information. Alternatively, the remaining SIBs can be received based on the SIB1 information. On the other hand, the determination as to whether the cell supports the MTC terminal can be made by various methods as well as the above-described instruction information confirmation. For example, the MTC terminal may determine through an attempt to receive an MTC-dedicated SIB transmitted through a fixed radio resource. That is, when the SIB set for the MTC is transmitted through the fixed radio resource, the MTC terminal may determine that the corresponding cell supports the MTC terminal if the SIB is successfully received from the fixed radio resource. Alternatively, the MTC terminal may need to receive the DCI of the PDCCH or the EPDCCH in order to receive the MTC dedicated SIB. Alternatively, when the MTC-dedicated SIB is transmitted at a fixed frequency and / or a fixed size, it may receive the MTC-dedicated SIB based on the PDCCH or the DCI of the EPDCCH.

After receiving the SIB1, the MTC terminal confirms the scheduling information for receiving the remaining MTC-dedicated SIBs (S830). Thereafter, the MTC terminal may repeatedly receive the remaining SIBs except the SIB1 based on the confirmed scheduling information or the MTC help information (S840).

For example, the MTC terminal receives SIB1, SIB2, 3, 4, ... (For example, SIB2A, 3A,...) According to the MTC help information and the scheduling information of the SIB1 without receiving the existing SIB. The scheduling information may include at least one of time resource information of MTC dedicated SIBs, frequency resource information, SI message size information, or SIB message size information. Alternatively, the MTC terminal may receive SIB1, SIB2, 3, 4, ... (E.g., SIB2A, 3A,...) Via the PDCCH or the DCI of the EPDCCH without receiving the existing SIBs. The SI message or SIBs may be set to a fixed size and may be transmitted using a fixed frequency resource. In case of PDCCH or EPDCCH, the corresponding MTC terminals attempt to receive using the newly defined MTC-SI-RNTI. The MTC-dedicated SIB may be composed of one or a plurality of SIBs.

The scheduling information included in the SIB1 may include at least one of the following information.

Scheduling information of MTC dedicated SIBs

- SIB type information: Includes type information for each SIB. For example, information that can distinguish types such as SIB2A, SIB3A, and SIB4A.

- SIB periodicity information for each SIB: Includes information on the transmission period of each SIB.

- Sub-frame number or offset value information: Information on the number of the sub-frame in which the first SIB transmission occurs or an offset value indicating the starting sub-frame.

- Repeated transmission count information: Includes the number of repeated transmissions or the number of repetitions within the transmission period.

- Coverage enhancement Level information: Includes values that are broken down into a set of steps to support coverage enhancement.

- Repetition periodicity information: It contains the value for repetition transmission period in which the same SIB is transmitted within the SIB transmission period. may be directly expressed in units of ms, or expressed in the form of SFN mod N (N is an integer).

- Radio frame information repeatedly transmitted within the period: It contains information indicating the radio frame in which the repeated transmission occurs within the transmission period. For example, the information may be included in a bitmap, a list of subframe numbers, an even / odd subframe, a repetition period, and the like.

- Repeated subframe information within one radio frame: Contains information indicating the subframe repeatedly transmitted in one radio frame. For example, a bitmap, a list of subframe numbers, an even / odd subframe, a repetition period, and the like.

- frequency resource information to which the corresponding SI message or SIB is to be transmitted: location of the frequency resource to which the SI message or SIB is to be transmitted or frequency hopping information.

- Transport Block Size (TBS) of the corresponding SI message or SIB: It may contain the TBS index value of the corresponding SI message or SIB.

Third Example

After receiving the SIB1 or SIB1A, the MTC terminal of the present invention can receive the remaining SIBs except SIB1 or SIB1A. In this case, the MTC terminal can receive the MTC-dedicated SIB (or SIBs) based on the scheduling information that can be included in the SIB1 or SIB1A. Alternatively, the MTC dedicated SIB can be received through the PDCCH or the Downlink Control Information (DCI) of the EPDCCH.

In this embodiment, the MTC terminal can receive SIBs other than SIB1 or SIB1A through a system information message. To this end, the scheduling information of the MTC-dedicated SIBs included in the SIB1 or the SIB1A may include at least one of the following information.

- SI window length: Contains information about a certain time window in which one SI message is transmitted. One SI message must be transmitted within one SI window, and the corresponding message may be repeatedly transmitted several times.

- SI scheduling information

 System Information (SI) Periodicity (si-periodicity): It contains information about the cycle of the SI message.

 SIB mapping information: Contains information on the SIB type included in the SI message.

 Subframe information repetition in the SI window: information indicating subframes repeatedly transmitted in the SI window (e.g., bitmap, list of radio frames and subframe numbers, even / odd subframes, Start sub-frame and repeat transmission period, start sub-frame and repetition transmission count, etc.).

■ Frequency resource information to which the SI message or SIB is to be transmitted: Frequency resource location or frequency hopping information in which the SI message or SIB is to be transmitted.

■ TBS (Transport Block Size) of the corresponding SI message or SIB: The SI message or the TBS index value of the SIB may be included.

10 is a diagram illustrating an SIB repeat transmission method according to a third embodiment of the present invention.

Other SIB messages (SIB2, 3, 4, ...) except for SIB1 or SIB1A are included in SI (System Information) message and transmitted. Mapping information for SI messages of SIBs is included in SIB1 or SIB1A. The MTC terminal can receive SIB1 or SIB1A and obtain information on when other SIBs are transmitted. Each SIB is included in one SI message. Or one or several SIB messages with the same periodicity of one SI message. Multiple SI messages may have the same period. SI messages are transmitted within an SI window, each SI message being associated with an SI window. Only one SI message can be transmitted in one SI window. Repeated transmission of the SI message is performed in the SI window, and information on which subframe the repetitive transmission is performed can be preset through SIB1. The size and frequency resource information of each SI message or SIB may be set via SIB1A with time resource information. Alternatively, each SI message may be a fixed size and may be transmitted using a fixed frequency resource.

Referring to FIG. 10, SI message 1 (SI # 1) may be set to a transmission period of 80 ms. Therefore, the SI message 1 is transmitted in the SI window set by the scheduling information. For example, SI message 1 may be transmitted in an SI window configured with SFN = 0 to SFN = 3 and transmitted within an SI window configured with SFN = 8 to SFN = 11 according to an 80 ms period. Also, repeated transmission can be performed within one SI window. For example, SI message 1 can be repeatedly transmitted in subframes 1 and 7 at SFN = 0 and SFN = 1. Likewise, repeated transmission can be performed even in SFN = 2 and SFN = 3.

On the other hand, SI message 2 (SI # 2) can also be transmitted within a SI window with a transmission period of 160 ms as in SI message 1 described above. In addition, repeated transmission can be performed in sub-frames 2, 4, and 7 within each SI window.

11 is a diagram for explaining a terminal operation according to the third embodiment of the present invention.

The MTC terminal of the present invention receives the MIB and SIB1 or SIB1A (S1100). The MIB or SIB1 or SIB1A may include indication information indicating whether or not the corresponding cell supports the MTC terminal. That is, when the corresponding cell performs the same operation as the iterative transmission for the MTC terminal, it broadcasts to the MIB or SIB1 or SIB1A through the corresponding instruction information.

For example, in order to inform the MTC terminal whether or not the cell is supported, an information element as shown in Table 2 below may be added to the MIB or SIB1 or SIB1A.

The coverage enhancement field may indicate whether the cell supports coverage enhancement. That is, the coverage enhancement field may include information on whether the corresponding cell supports the coverage enhancement MTC terminal or the MTC terminal.

The MTC terminal receiving the MIB or SIB1 or SIB1A can confirm whether the corresponding cell is a cell supporting the MTC terminal (S1110). Whether or not the corresponding cell supports the MTC terminal can be confirmed through the above-mentioned instruction information. Alternatively, whether or not the corresponding cell supports the MTC terminal can be confirmed through repeated reception of SIB1 or SIB1A. That is, whether or not the cell supports the MTC terminal can be determined through an attempt to receive the MTC dedicated SIB transmitted using a fixed resource such as SIB1 or SIB1A. For example, if the MTC dedicated SIB is successfully received, it can be determined that the corresponding cell supports the MTC terminal.

If the corresponding cell does not support the MTC terminal, the MTC terminal determines that the current cell is a barred cell and performs a cell reselection procedure (S1120). For example, the MTC terminal may select a cell by selecting another frequency having the same priority as that of the current cell, or may select a cell of a lower priority frequency. The MTC terminal performs step S1100 again for the selected cell.

If the cell supports the MTC terminal, it receives SIB1 or SIB1A or the remaining SIBs according to the information of MIB or SIB1 or SIB1A. To this end, the MTC terminal confirms scheduling information of SIB1 or SIB1A (S1130). For example, after receiving SIB1 or SIB1A, the MTC terminal transmits SIB2, 3, 4, ... (For example, SIB2A, 3A,...) For the MTC terminal according to the MTC help information or the scheduling information of the SIB1 or SIB1A without receiving the existing SIB. Alternatively, the MTC terminal may receive the MTC terminal dedicated SIBs (e.g., SIB2A, 3A, ...) via the PDCCH or the DCI of the EPDCCH. The size and frequency resource information of the corresponding SIBs can be set together with the time resource information through the SIB 1A. Alternatively, the received SIBs may be of fixed size and may be transmitted using a fixed frequency resource. Alternatively, the SIBs may be scheduled via the PDCCH or the DCI of the EPDCCH. In case of PDCCH or EPDCCH, the corresponding MTC terminals attempt to receive using the newly defined MTC-SI-RNTI. One or more SIBs for the MTC terminal may be configured.

Meanwhile, the scheduling information included in the SIB1 or SIB1A may include at least one of the following information.

≪ Scheduling information of MTC dedicated SIBs >

- SI window length: Contains information about a certain time window in which one SI message is transmitted. One SI message must be transmitted within one SI window, and the corresponding message may be repeatedly transmitted several times.

- SI scheduling information

 System Information (SI) Periodicity (si-periodicity): It contains information about the cycle of the SI message.

 SIB mapping information: Contains information on the SIB type included in the SI message.

 Subframe information repetition in the SI window: information indicating subframes repeatedly transmitted in the SI window (e.g., bitmap, list of radio frames and subframe numbers, even / odd subframes, Start sub-frame and repeat transmission period, start sub-frame and repetition transmission count, etc.).

■ Frequency resource information to which the SI message or SIB is to be transmitted: Frequency resource location or frequency hopping information in which the SI message or SIB is to be transmitted.

■ TBS (Transport Block Size) of the corresponding SI message or SIB: The SI message or the TBS index value of the SIB may be included.

The embodiments described above may be applied to each embodiment, and embodiments may be combined and applied. In addition, the SIB for the MTC terminal described above may be a fixed size, and the frequency resource may be fixed and transmitted. If the SIBs for the MTC terminal are transmitted using a fixed size and a fixed frequency resource, the MTC terminal can receive the SIBs without receiving PDCCH, EPDCCH, or the like. Alternatively, size information and frequency resource information of the SI message or SIBs may be transmitted together with the time resource information through the SIB1A. In this case, the remaining SIBs can be received using the SIB1A.

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

The system information block 1 below means SIB1 or SIB1A described above.

A method for transmitting system information according to another exemplary embodiment of the present invention includes transmitting a master information block (MIB) or a system information block 1 (SIB1) for a MTC (Machine Type Communication) ), Transmitting the master information block and the system information block 1, and repeatedly transmitting one or more system information blocks except for the system information block 1 based on the scheduling information.

Referring to FIG. 12, the base station of the present invention includes a step of setting scheduling information included in a master information block (MIB) or a system information block 1 (SIB1) for the MTC terminal (S1210). For example, the MIB or SIB1 may be configured to include scheduling information related to transmission resources or transmission time of MTC-dedicated SIBs. As described above, the scheduling information may include information related to repetitive transmission of system information blocks except SIB1 and radio resource mapping. For example, the scheduling information may include at least one of a time when at least one system information is transmitted, frequency-domain radio resource information, and repeated transmission-related information. In another example, the scheduling information includes at least one of type information of each of one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, It may contain more than one piece of information. As another example, the scheduling information may include at least one of window size information of the system information message and system information message scheduling information including subframe information repeatedly transmitted within the window size. Here, the system information message may include one or more system information blocks having the same period.

Meanwhile, the MIB or SIB1 may include information on whether the cell transmitting the corresponding information is a cell supporting the operation of the MTC terminal. Specifically, the MIB or SIB1 may include indication information indicating whether or not the corresponding cell supports the MTC terminal. The MTC terminal can determine whether to use the corresponding cell by using the instruction information. Alternatively, the MTC terminal may check whether the corresponding cell supports the MTC terminal according to the transmission format of the MIB or SIB1. For example, if the SIB1 is repeatedly received a predetermined number of times, the MTC terminal may determine that the corresponding cell supports the MTC terminal.

In addition, the base station includes a step of transmitting a master information block and a system information block 1 (S1220). The above-mentioned MIB and SIB1 can be transmitted to the MTC terminal. The MIB may include scheduling information of the SIB1. Or SIB1 may be set for the MTC terminal only and may be transmitted using a fixed size or fixed frequency resource. Or the transmission scheduling information of the SIB1 may be transmitted via the PDCCH or the EPDCCH.

In addition, the base station repeatedly transmits one or more system information blocks except system information block 1 based on the scheduling information (S1230). The base station can transmit the remaining SIBs except the SIB1 according to the scheduling information included in the MIB or SIB1. In this case, the remaining SIBs can be set to MTC only. Alternatively, the SIBs may be configured and transmitted in an SI message. Meanwhile, the SIBs can be repeatedly transmitted to the MTC terminal through repeated transmission. In this case, a specific SIB repetition period, a repetition transmission position, and the like may be included in the above-described scheduling information. The MTC terminal may acquire the repetition information of the SIBs by checking the scheduling information, or may obtain the repeated information of the SIBs by processing the information included in the scheduling information.

In addition to this, the base station can perform all the operations necessary to perform each of the embodiments of the present invention described above as necessary.

Hereinafter, the configurations of the MTC terminal and the base station, in which all of the embodiments of the present invention described above can be performed, will be briefly described with reference to the drawings.

13 is a diagram illustrating a configuration of an MTC terminal according to another embodiment of the present invention.

The MTC terminal 1300 according to another embodiment of the present invention includes a receiver 1330 for receiving a master information block (MIB) and a system information block 1 (SIB1), and a master information block And a controller 1310 for confirming the scheduling information included in the system information block 1. Also, the receiver 1330 may repeatedly receive one or more system information blocks except the system information block 1 based on the scheduling information. In addition, the receiving unit 1330 receives downlink control information, data, and messages from the base station through the corresponding channel. Meanwhile, the scheduling information received by the receiver 1330 may include information related to repetitive transmission of system information blocks except SIB1 and radio resource mapping. For example, the scheduling information may include at least one of a time when at least one system information is transmitted, frequency-domain radio resource information, and repeated transmission-related information. In another example, the scheduling information includes at least one of type information of each of one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, It may contain more than one piece of information. As another example, the scheduling information may include at least one of window size information of the system information message and system information message scheduling information including subframe information repeatedly transmitted within the window size. Here, the system information message may include one or more system information blocks having the same period.

In addition, the controller 1310 receives the SIB scheduling information required for performing the above-described present invention, the iterative reception according to the MTC-dedicated SIB setting, and the overall MTC terminal 1300).

The transmitter 1320 transmits uplink control information, data, and a message to the base station through the corresponding channel.

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

The base station 1400 according to another exemplary embodiment of the present invention may include a master information block (MIB) for the MTC terminal or a control information block for setting scheduling information included in a system information block 1 (SIB1) And a transmitter 1420 that transmits the master information block 1410 and the master information block and the system information block 1 and repeatedly transmits one or more system information blocks except for the system information block 1 based on the scheduling information.

The controller 1410 may generate scheduling information of the SIB for the MTC dedicated SIB or the MTC terminal. The scheduling information may include information related to repetitive transmission of system information blocks except SIB1 and radio resource mapping. For example, the scheduling information may include at least one of a time when at least one system information is transmitted, frequency-domain radio resource information, and repeated transmission-related information. In another example, the scheduling information includes at least one of type information of each of one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, It may contain more than one piece of information. As another example, the scheduling information may include at least one of window size information of the system information message and system information message scheduling information including subframe information repeatedly transmitted within the window size. Here, the system information message may include one or more system information blocks having the same period.

In addition, the control unit 1410 controls the overall operation of the base station 1400 according to the MTC-dedicated SIB setting and the repeated transmission of the MTC-dedicated SIB necessary for carrying out the present invention.

Meanwhile, the transmitter 1420 and the receiver 1430 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 portions of the standard documents are added to or contained in 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 receiving system information by a MTC (Machine Type Communication)
Receiving a master information block (MIB) and a system information block 1 (SIB1);
Checking the master information block or the scheduling information included in the system information block 1; And
And repeatedly receiving one or more system information blocks excluding the system information block 1 based on the scheduling information. The method according to claim 1,
The system information block 1 and the at least one system information block may comprise:
And MTC terminal dedicated system information transmitted repeatedly a predetermined number of times. The method according to claim 1,
The scheduling information includes:
Wherein the at least one system information includes information on at least one of time and frequency-axis radio resource information and repeated transmission related information. The method according to claim 1,
The scheduling information includes:
Information on at least one of the type information of each of the one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, start sub frame information and coverage level information . ≪ / RTI > The method according to claim 1,
The scheduling information includes:
System information message scheduling information including window size information of a system information message and subframe information repeatedly transmitted within the window size,
Wherein the system information message comprises the one or more system information blocks having the same period. A method for a base station to transmit system information,
Setting scheduling information included in a Master Information Block (MIB) or a System Information Block 1 (SIB1) for a MTC (Machine Type Communication) terminal;
Transmitting the master information block and the system information block 1; And
And repeatedly transmitting one or more system information blocks excluding the system information block 1 based on the scheduling information. The method according to claim 6,
The system information block 1 and the at least one system information block may comprise:
And MTC terminal dedicated system information transmitted repeatedly a predetermined number of times. The method according to claim 6,
The scheduling information includes:
Wherein the at least one system information includes information on at least one of time and frequency-axis radio resource information and repeated transmission related information. The method according to claim 6,
The scheduling information includes:
Information on at least one of the type information of each of the one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, start sub frame information and coverage level information . ≪ / RTI > The method according to claim 6,
The scheduling information includes:
System information message scheduling information including window size information of a system information message and subframe information repeatedly transmitted within the window size,
Wherein the system information message comprises the one or more system information blocks having the same period. 1. An MTC (Machine Type Communication) terminal for receiving system information,
A receiving unit for receiving a master information block (MIB) and a system information block 1 (SIB1); And
And a controller for checking the master information block or the scheduling information included in the system information block 1,
Wherein the receiving unit repeatedly receives one or more system information blocks except for the system information block 1 based on the scheduling information. 12. The method of claim 11,
The system information block 1 and the at least one system information block may comprise:
And MTC terminal dedicated system information transmitted repeatedly a predetermined number of times. 12. The method of claim 11,
The scheduling information includes:
Wherein the at least one system information includes at least one of a time of transmission of the at least one system information, frequency-axis radio resource information, and repeated transmission-related information. 12. The method of claim 11,
The scheduling information includes:
Information on at least one of the type information of each of the one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, start sub frame information and coverage level information To the MTC terminal. 12. The method of claim 11,
The scheduling information includes:
System information message scheduling information including window size information of a system information message and subframe information repeatedly transmitted within the window size,
Wherein the system information message includes the at least one system information block having the same period. A base station for transmitting system information,
A control unit for setting scheduling information included in a master information block (MIB) or a system information block (SIB1) for a MTC (Machine Type Communication) terminal; And
The master information block and the system information block 1,
And a transmitter for repeatedly transmitting at least one system information block excluding the system information block 1 based on the scheduling information. 17. The method of claim 16,
The system information block 1 and the at least one system information block may comprise:
And MTC terminal dedicated system information transmitted repeatedly a predetermined number of times. 17. The method of claim 16,
The scheduling information includes:
Wherein the at least one system information includes at least one of a time of transmission of the at least one system information, frequency-domain radio resource information, and repeated transmission-related information. 17. The method of claim 16,
The scheduling information includes:
Information on at least one of the type information of each of the one or more system information blocks, transmission period information, repeated transmission period information, repeated transmission period information, repeated transmission frame information, repeated transmission sub frame information, start sub frame information and coverage level information And the base station. 17. The method of claim 16,
The scheduling information includes:
System information message scheduling information including window size information of a system information message and subframe information repeatedly transmitted within the window size,
Wherein the system information message comprises the one or more system information blocks having the same period.

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