WO2016053039A1

WO2016053039A1 - System information transmission method and apparatus

Info

Publication number: WO2016053039A1
Application number: PCT/KR2015/010413
Authority: WO
Inventors: 이경준; 박규진; 강승현; 최우진
Original assignee: 주식회사 케이티
Priority date: 2014-10-02
Filing date: 2015-10-01
Publication date: 2016-04-07

Abstract

The present invention relates to a system information transmission and receipt method for a machine type communication (MTC) terminal, and an apparatus therefor. More specifically, the present invention relates to a system information transmission method for an MTC terminal in order to support a low complexity UE category/type for operation of the MTC terminal. In particular, the present invention suggests a method and an apparatus for receiving, by a machine type communication (MTC) terminal, system information, the method comprising the steps of: receiving a master information block (MIB) and system information block 1 (SIB1); identifying 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 on the basis of the scheduling information.

Description

Method and apparatus for transmitting system information

The present invention relates to a method and apparatus for transmitting and receiving system information for a machine type communication (MTC) terminal. More specifically, the present invention relates to a method for transmitting system information for an MTC terminal to support a low complexity UE category / type for the operation of the MTC terminal.

Machine type communication (hereinafter referred to as "MTC" communication) is a form of data communication that refers to machine or machine communication, where one or more entities do 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 may be installed in a place where the radio environment is worse than that of the general terminal. In order for an MTC terminal to operate in a place where a radio 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 in one subframe unit in a plurality of subframes.

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

In this case, a problem may occur in which system information transmission and reception of a general terminal using an LTE communication method cannot be performed normally.

In the background described above, the present invention is to propose a method and apparatus for efficiently transmitting a system information block even in a situation where time and frequency axis resources available to an MTC terminal are limited.

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

In order to solve the above-mentioned problems, the present invention provides a master information block (MIB) and system information block 1 (System Information Block 1, SIB1) in a method of receiving a machine type communication (MTC) terminal system information; And receiving scheduling information included in the master information block or system information block 1 and repeatedly receiving one or more system information blocks except the system information block 1 based on the scheduling information. To provide.

In addition, the present invention is a method for transmitting the system information by the base station, it is included in the master information block (MIB) or system information block 1 (System Information Block 1, SIB1) for machine type communication (MTC) terminal It provides a method comprising the step of setting the scheduling information, the step of transmitting the master information block and system information block 1, and repeatedly transmitting one or more system information blocks except the system information block 1 based on the scheduling information. .

In addition, the present invention, in the Machine Type Communication (MTC) terminal for receiving system information, the receiving unit and the master information receiving the Master Information Block (MIB) and System Information Block 1 (System Information Block 1, SIB1) It includes a control unit for checking the scheduling information included in the block or system information block 1, the receiving unit provides an MTC terminal device for repeatedly receiving one or more system information blocks except the system information block 1 based on the scheduling information.

In addition, the present invention is a base station for transmitting system information, scheduling included in a master information block (MIB) or system information block 1 (SIB1) for a machine type communication (MTC) terminal Provided is a base station apparatus including a control unit for setting information, a transmission unit for transmitting a master information block and system information block 1, and repeatedly transmitting one or more system information blocks except system information block 1 based on scheduling information.

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

In addition, according to the present invention, there is an effect of newly defining a system information block including dedicated system information for an MTC terminal, and providing a method and apparatus for repeatedly transmitting the corresponding MTC dedicated system information block.

1 is a diagram illustrating 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 view for explaining the operation of the terminal according to the first embodiment of the present invention.

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

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

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

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

8 is a view for explaining the operation of the terminal 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 to support coverage enhancement according to the present invention.

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

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

12 is a diagram for explaining an operation of a base station 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 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 through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

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

In other words, in the present specification, the MTC terminal may mean a newly defined 3GPP Release 13 low cost (or low complexity) UE category / type for performing LTE-based MTC related operations. Alternatively, in the present specification, the MTC terminal supports enhanced coverage compared to the existing LTE coverage, or UE category / type defined in the existing 3GPP Release 12 or lower, or newly defined Release 13 low cost (or low complexity) supporting low power consumption. ) May mean a UE category / type.

The wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data, and the like. The wireless communication system includes a user equipment (UE) and a base station (base station, BS, or eNB). In the present specification, a user terminal is a generic concept meaning a terminal in wireless communication. In addition, user equipment (UE) in WCDMA, LTE, and HSPA, as well as mobile station (MS) in GSM, user terminal (UT), and SS It should be interpreted as a concept that includes a subscriber station, a wireless device, and the like.

A base station or a cell generally refers to a station that communicates with a user terminal, and includes a Node-B, an evolved Node-B, an Sector, a Site, and a BTS. Other terms such as a base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell may be called.

In other words, in the present specification, a base station or a cell is a generic meaning indicating some areas or functions covered by a base station controller (BSC) in CDMA, a Node-B in WCDMA, an eNB or a sector (site) in LTE, and the like. It should be interpreted as, and it is meant to cover all the various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, small cell communication range.

Since the various cells listed above have a base station for controlling each cell, the base station may be interpreted in two senses. i) the device providing the megacell, the macrocell, the microcell, the picocell, the femtocell, the small cell in relation to the wireless area, or ii) the wireless area itself. In i) all devices which provide a given wireless area are controlled by the same entity or interact with each other to cooperatively configure the wireless area to direct the base station. The eNB, RRH, antenna, RU, LPN, point, transmit / receive point, transmit point, receive point, and the like, according to the configuration of the radio region, become an embodiment of the base station. In ii), the base station may indicate the radio area itself to receive or transmit a signal from a viewpoint of a user terminal or a neighboring base station.

Therefore, megacells, macrocells, microcells, picocells, femtocells, small cells, RRHs, antennas, RUs, low power nodes (LPNs), points, eNBs, transmit / receive points, transmit points, and receive points are collectively referred to as base stations. do.

In the present specification, the user terminal and the base station are two transmitting and receiving entities used to implement the technology or technical idea described in this specification in a comprehensive sense and are not limited by the terms or words specifically referred to. The user terminal and the base station are two types of uplink or downlink transmitting / receiving subjects used to implement the technology or the technical idea described in the present invention, and are used in a generic sense and are not limited by the terms or words specifically referred to. Here, the uplink (Uplink, UL, or uplink) refers to a method for transmitting and receiving data to the base station by the user terminal, the downlink (Downlink, DL, or downlink) means to transmit and receive data to the user terminal by the base station It means the way.

There is no limitation on the multiple access scheme applied to the wireless communication system. Various multiple access techniques 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-TDMA, OFDM-CDMA Can be used. One embodiment of the present invention can be applied to resource allocation in the fields of asynchronous wireless communication evolving to LTE and LTE-Advanced through GSM, WCDMA, HSPA, and synchronous wireless communication evolving to CDMA, CDMA-2000 and UMB. The present invention should not be construed as being limited or limited to a specific wireless communication field, but should be construed as including all technical fields to which the spirit of the present invention can be applied.

The uplink transmission and the downlink transmission may use a time division duplex (TDD) scheme that is transmitted using different times, or may use a frequency division duplex (FDD) scheme that is transmitted using different frequencies.

In addition, in systems such as LTE and LTE-Advanced, a standard is configured by configuring uplink and downlink based on one carrier or a pair of carriers. The uplink and the downlink include a Physical Downlink Control CHannel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel (PHICH), a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control CHannel (EPDCCH), and the like. Control information is transmitted through the same control channel, and data is configured by a data channel such as a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH).

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

In the present specification, a cell means a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and the transmission / reception point itself. Can be.

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

The multiple transmit / receive point is at least one having a base station or a macro cell (hereinafter referred to as an eNB) and a high transmission power or a low transmission power in a macro cell region, which is wired controlled by an optical cable or an optical fiber to the eNB. May be RRH.

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

Hereinafter, a situation in which a signal is transmitted and received through a channel such as a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH may be expressed in the form of 'sending and receiving a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH.'

In addition, hereinafter, a description of transmitting or receiving a PDCCH or transmitting or receiving a signal through the PDCCH may be used as a meaning including transmitting or receiving an EPDCCH or transmitting or receiving a signal through the EPDCCH.

That is, the physical downlink control channel described below may mean PDCCH or EPDCCH, and may also be used to include both PDCCH and EPDCCH.

In addition, for convenience of description, the EPDCCH, which is an embodiment of the present invention, may be applied to the portion described as the PDCCH, and the EPDCCH may be applied to the portion described as the EPDCCH as an embodiment of the present invention.

Meanwhile, high layer signaling described below includes RRC signaling for transmitting RRC information including an RRC parameter.

The eNB performs downlink transmission to the terminals. The eNB includes downlink control information and an uplink data channel (eg, a physical downlink shared channel (PDSCH), which is a primary physical channel for unicast transmission, and scheduling required to receive the PDSCH. For example, a physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission on a physical uplink shared channel (PUSCH) may be transmitted. Hereinafter, the transmission and reception of signals through each channel will be described in the form of transmission and reception of the corresponding channel.

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 the conventional 3GPP LTE / LTE-Advanced system, in case of any RRC connected terminal, all downlink subframes (or DRXs) are configured. In case of UE, Common Search Space (CSS) and US-specific Search Space (USS) configured through PDCCH or EPDCCH, which are downlink control channels of all downlink subframes configured in DRX on period, are monitored and transmitted from the corresponding cell. Scheduling information for broadcasting / multicasting traffic such as System Information Block (SIB), random access response (RAR), paging message, and scheduling information for unicasting traffic for the corresponding UE can be obtained. have. As such, the terminal is defined to receive the broadcasting / multicasting message and the unicasting message through all downlink subframes.

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

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, conventional MTC products based on GSM / GPRS networks are increasing, and MTC terminals using low data rates may be provided at low cost. Therefore, when a mobile carrier uses an LTE / LTE-Advanced network for general data transmission and a GSM / GPRS network for an MTC terminal, two RATs must be operated. In addition, this is a problem in terms of revenue and efficiency of the mobile communication provider due to inefficient use of the frequency band.

In order to solve this problem, inexpensive MTC terminal using GSM / EGPRS network should be replaced with MTC terminal using LTE / LTE-Advanced network, and for this purpose, various methods for lowering the price of LTE / LTE-Advanced MTC terminal are required. Requirements are being discussed. In addition, various functions have been studied to satisfy the requirements under discussion. That is, there is a need for a definition of a low complexity UE category / type that reflects various requirements for lowering the price of the LTE MTC terminal.

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

Robust transmission such as PSD boosting or low coding rate and time domain repetition to improve coverage while lowering LTE / LTE-Advanced MTC terminal price. Development of various technologies is required.

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 requirement 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, a new coverage enhancement and low complexity UE category / type satisfying the above conditions for MTC operation is simply described as an MTC terminal for convenience of description.

Send system information

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

The system information is composed of 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 40 ms period. The MIB is transmitted in subframe # 0 of the radio frame with SFN mod 4 = 0, and other radio frames are transmitted in repetition in 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 80 ms period. That is, it is transmitted in subframe # 5 of the radio frame with SFN mod 8 = 0, and is repeatedly transmitted in subframe # 5 for the radio frame with SFN mod 2 = 0.

The terminal 100 may receive the remaining SIBs except for SIB1 (S103). SIB messages other than SIB1 (for example, SIB2, 3, 4, ...) are included in a System Information (SI) message and transmitted. Mapping information for SI messages of respective SIBs is included in SIB1. When the terminal 100 receives the SIB1, the terminal 100 may know when other SIBs are transmitted. Each SIB is included in one SI message. One SI message may include several SIBs having the same period. Several SI messages may have the same period. The SI message is transmitted in an SI window, where one SI message is associated with the SI window. Only one SI message may be transmitted in one SI window. Repeated transmission of the SI message can be freely performed within the SI window.

In the case of the MTC terminal described above, 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 as a characteristic of UE RF bandwidth reduction limited to 1,4 MHz, There may be a problem that can not receive any existing message (eg, SIB, paging) except. That is, in the case of the MTC terminal according to the existing SIB transmission method, there is a problem that can not normally receive the signal such as SIB due to bandwidth limitation.

Accordingly, the present invention proposes a method for efficiently transmitting the SIB for the MTC terminal. In particular, all existing SIBs and the like are prevented from unnecessary repetition, so that the base station can efficiently manage radio resources.

In the method for receiving system information, the MTC terminal according to an embodiment of the present invention includes receiving a master information block (MIB) and a system information block 1 (system information block 1, SIB1) and master information. The method may include checking scheduling information included in the block or system information block 1 and repeatedly receiving one or more system information blocks except the system information block 1 based on the scheduling information.

Referring to FIG. 2, the MTC terminal includes receiving a MIB and 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 the corresponding cell supports the MTC terminal. The MTC terminal may determine whether to use the corresponding cell using the indication information. Alternatively, SIB1 may be received when the cell supports 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 form of the MIB or SIB1. For example, when 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, SIB1 may be SIB1 set to MTC terminal only, unlike SIB1 of the conventional general terminal. The general terminal refers to an existing LTE or LTE-Advanced terminal to which the above-described MTC operating condition is not applied.

The reception method of the MIB and the SIB1 will be described in detail with reference to the following embodiments.

On the other hand, the MTC terminal includes the step of confirming the scheduling information included in the MIB or SIB1 (S220). The MTC terminal may check scheduling information about system information included in the MIB or SIB1. For example, the MTC terminal may check scheduling information for receiving system information blocks other than SIB1 through MIB or SIB1. Hereinafter, as described in each embodiment, the scheduling information may include information related to repetitive transmission and radio resource mapping of system information blocks except for SIB1. As an example, the scheduling information may include at least one of time and frequency axis radio resource information and repetitive transmission related information in which one or more system information is transmitted. As another example, the scheduling information may include one of type information, transmission period information, repeat transmission count information, repeat transmission period information, repeat transmission frame information, repeat transmission subframe information, start subframe information, and coverage level information of each of the one or more system information blocks. It may also include one or more pieces 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 repeatedly transmitted a predetermined number of times. That is, SIBs including SIB1 may be MTC terminal dedicated SIB newly defined for MTC terminal. Alternatively, SIBs other than SIB1 may be STC dedicated SIBs newly defined for MTC terminals. Information included in the scheduling information and the terminal operation according to the same will be described in more detail with reference to the following embodiments.

The MTC terminal may include repeatedly receiving one or more system information blocks except for SIB1 based on the scheduling information (S230). For example, the MTC terminal may receive the remaining SIBs except for SIB1 based on the received scheduling information. As described above, SIBs except SIB1 may be defined as MTC terminals only. In addition, SIBs may be repeatedly received according to a predetermined number of times. That is, the SIBs may 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 may receive system information for the MTC terminal. Hereinafter, each embodiment of the present invention will be described in more detail with reference to the accompanying drawings. Hereinafter, for convenience of understanding, in case of an MTC dedicated SIB which is distinguished from an existing SIB, an A letter is added after the SIB type number such as SIB1A and SIB2A. However, this is for convenience of explanation and understanding, and is not limited to the description.

First embodiment

The MTC terminal according to the first embodiment of the present invention receives the SIB1 newly defined for the MTC terminal after receiving the MIB. As described above, in the case of the SIB set to the MTC terminal only, since the A is attached to the SIB type number, it is referred to as SIB1A.

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

3 is a view for explaining the operation of the terminal according to the first embodiment of the present invention. Referring to Fig. 3, the operation of the terminal according to the first embodiment will be described by way of example.

The MTC terminal receives the MIB (S300).

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

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

For example, when the MTC terminal receiving the MIB does not support the MTC terminal, the MTC terminal regards the current cell as a barred cell and performs a cell reselection procedure (S320). That is, the MTC terminal may select a cell by selecting another frequency having the same priority as the frequency of the current cell, or may select a cell of a frequency having a low priority. The MTC terminal performs step S300 again for the selected cell.

If the cell supports the MTC terminal, the MTC terminal receives SIB1 according to the information of the MIB (S330). Here, SIB1 received by the MTC terminal refers to SIB1A set to MTC terminal only. On the other hand, the MTC terminal may obtain information on whether the corresponding cell supports the MTC terminal in another way. For example, whether 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 reception of the SIBs transmitted using the fixed resource is successful, it may be determined that the cell supports the MTC terminal.

Meanwhile, the SIB1A may always be transmitted using a fixed frequency resource at a predetermined period (for example, 80 ms). In addition, SIB1A may be set to a fixed size. For example, if the transmission period of SIB1A is 80ms, SIB1A transmission occurs in a radio frame with SFN mod 8 = 0. In addition to the radio frame through which the SIB1A is transmitted according to the transmission period, the SIB1A may be repeatedly transmitted in the remaining radio frames. In addition, repetition may be transmitted even within a corresponding radio frame in which SIB1A is transmitted. Repeated transmission in one radio frame may be generated in one or a plurality of predefined subframes. The repetitive transmission pattern may be determined according to the number of repetitive transmissions set in the MIB or the coverage enhancement level. Or it may be transmitted at a predefined maximum number of repeated transmissions.

The MTC terminal may check scheduling information of MTC dedicated SIBs in order to receive the remaining SIBs except for SIB1A (S340).

For example, when there are a plurality of MTC dedicated SIBs, the MTC terminal receives SIB2, 3, 4... After receiving SIB1A. Instead of receiving the existing SIB, etc., MTC dedicated SIBs may be additionally received according to MTC help information or scheduling information of SIB1A (S350). As MTC assistance information or scheduling information of SIB1A, scheduling information described below with reference to FIG. 2 or below may be used.

Second embodiment

After receiving the SIB1 or SIB1A, the MTC terminal of the present invention may receive the MTC dedicated SIB based on the scheduling information of the SIB1 without receiving the existing SIB such as SIB2, 3, and 4. Alternatively, the MTC terminal may receive an MTC dedicated SIB through downlink control information (DCI) of the PDCCH or the EPDCCH. Alternatively, the MTC terminal may receive 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 aforementioned MTC dedicated SIB scheduling information may be an existing SIB1 or a SIB1A newly defined as an MTC only.

Meanwhile, MTC dedicated SIBs may be set to a fixed size and may be transmitted using a fixed frequency resource. 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 the SIBs.

Meanwhile, SIB1 or SIB1A may include scheduling information for MTC dedicated SIBs. The scheduling information may include at least one of time and frequency axis radio resource information and repetitive transmission related information in which one or more system information is transmitted. More specifically, the scheduling information includes type information, transmission period information, repeat transmission count information, repeat transmission period information, repeat transmission frame information, repeat transmission subframe information, start subframe information, and coverage level information of each of the one or more system information blocks. It may include one or more of the information.

For example, each information that may be included in the scheduling information is as follows.

SIB type information: Includes type information for each SIB. For example, it includes information for identifying types such as SIB2A, SIB3A, SIB4A, and the like.

SIB Periodicity Information for Each SIB: Contains information about a transmission period of each SIB.

Start sub-frame number or offset value information: includes information on the number of the subframe in which the first SIB transmission occurs or the offset value indicating the start subframe.

Repetitive transmission number information: includes a transmission number or a value that may mean the number of transmissions repeated within a transmission period.

-Coverage enhancement level information: It includes a value that is divided into steps in order to support coverage enhancement (Coverage Enhancement).

Repetition Transmission Period (Repetition Periodicity) Information: Contains a value for a repeated transmission period in which the same SIB is transmitted within the SIB transmission period. It may be expressed directly in ms unit, or may be expressed in the form of SFN mod N (N is an integer).

Radio frame information repeatedly transmitted in a period: includes information indicating a radio frame in which repeated transmission occurs in a transmission period. For example, the corresponding information may be included as a value such as a bitmap, a list of subframe numbers, an even / odd subframe, a repetition period, and the like.

Subframe information repeatedly transmitted in one radio frame: includes information indicating a subframe repeatedly transmitted in one radio frame. For example, it may be included as a value such as a bitmap, a list of subframe numbers, an even / odd subframe, a repetition period, and the like.

Frequency resource information on which the corresponding SI message or SIB is to be transmitted: It may include a frequency resource location and frequency hopping information on which the SI message or SIB is to be transmitted.

Transport Block Size (TBS) of the SI message or the SIB: It may include a TBS index value of the SI message or the SIB.

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

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

Hereinafter, each detailed method of the second embodiment will be described. Hereinafter, for convenience of description, it will be described as SIB1. However, SIB1 may be used to mean SIB1A which is newly defined for the MTC terminal described in the conventional SIB1 or the first embodiment. In addition, the MTC dedicated SIB means the remaining SIB except for the above-described SIB1 for convenience of description.

Method 1

Referring to FIG. 4, if the scheduling information for the MTC dedicated SIB of SIB1 or SIB1A includes a value indicating the number of repetitive transmissions, the MTC dedicated SIBs are repeatedly transmitted according to the number of repetitive transmissions in the corresponding period. . That is, the transmission occurs every (SIB transmission period) / (the number of repeated transmissions) from the start subframe. The repetitive transmission number information may be included in the MIB rather than SIB1 or SIB1A. For example, when the transmission period (SIB Periodicity) is 20ms and the number of repetitive transmissions is set to 20, repetitive transmission occurs at every 20/20 = 1 from every start subframe to repetition. If the transmission period is 100ms and the number of repetitive transmissions is set to 10, the MTC dedicated SIB is repeatedly transmitted in a subframe (refer to FIG. 4, subframe 1) set every 10ms with 100/10 = 10. can be repetition).

Method 2

Referring to FIG. 5, if the scheduling information for the MTC dedicated SIB of SIB1 or SIB1A includes a value indicating a coverage enhancement level, the MTC dedicated SIBs are determined according to the number of repetitive transmissions corresponding to the corresponding level. Can be sent repeatedly. Alternatively, the coverage enhancement level value may be information included in the MIB, not SIB1 or SIB1A. For example, if the coverage enhancement level is set to 2, repetitive transmission may be performed according to the number of repetitive transmissions according to the preset coverage level. That is, in the case of coverage enhancement level 2, when the number of repetitive transmissions is mapped to 10, repetitive transmissions may be generated every (SIB transmission period) / (the number of repetitive transmissions) from the set start subframe. In addition, the number of repetitive transmissions according to the coverage enhancement level may be broadcast for setting and changing through the SIB.

Method 3

Referring to FIG. 6, if the scheduling information for the MTC dedicated SIB of SIB1 or SIB1A includes a repetitive transmission period value, the MTC dedicated SIBs are repeated according to the repetition transmission period from a subframe set in the corresponding period. Is sent. For example, when the transmission period (SIB Periodicity) is 100ms and the repetition period (Repetition Periodicity) is 10ms, repetition may occur every 10ms from the set start subframe. That is, as shown in FIG. 6, when the starting subframe is subframe number # 1 and the repetitive transmission period is 10 ms, the MTC dedicated SIBs are repeatedly transmitted in a 10 ms period within a 100 ms transmission period. Thus, subframe # 1 with SFN = 0, subframe # 1 with SFN = 1, subframe # 1 with SFN = 2, subframe # 1 with SFN = 3, subframe # 1 with SFN = 9 Is sent repeatedly.

Method 4

Referring to FIG. 7, if the scheduling information for the MTC dedicated SIB of SIB1 or SIB1A includes radio frame information and subframe information in which repetitive transmission occurs, the MTC dedicated SIBs have radio frames and subframes set within a corresponding period. Repetition is sent at. For example, if a transmission period (SIB Periodicity) is 100ms, radio frame information for which repetitive transmission occurs is 2, 4, 6, 8, and subframe information is set to 3, 6, the corresponding repetitive transmission is SFN = 2, SFN = 4, SFN = 6, SFN = 8 in the

subframes

3, 6 of the radio frame may be repeated transmission of MTC dedicated SIBs. If only subframe information is included, MTC dedicated SIBs are repetitively transmitted in a configured subframe of every radio frame within a corresponding period.

As described in Method 1 to Method 4, MTC dedicated SIBs may be configured for repetitive transmission based on scheduling information that may be included in SIB1 or SIB1A or MIB. Therefore, repetitive transmission may be performed by any one of the aforementioned methods 1 to 4 according to the type or type of information included in the scheduling information. Alternatively, the above-described methods 1 to 4 may be mutually combined or a part of the methods 1 to 4 may be mutually combined according to each information included in the scheduling information. In addition, the MTC terminal of the present invention may check the repetitive transmission resource of the aforementioned MTC dedicated SIB based on the information included in the scheduling information according to the method of configuring the scheduling information.

Meanwhile, the size and frequency resource information of the above-described SIBs may be configured through SIB1A together with time resource information. Alternatively, the above-described SIBs may be of a fixed size and may be transmitted using a fixed frequency resource. It may also be scheduled through DCI of PDCCH or EPDCCH. In the 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, indication information such as SIB2A has a value of "00" and SIB3A has a value of "01" may be included in each SIB.

The repetitive transmission operation described above may be applied not only to SIB transmission but also to a paging message and a random access response (RAR) message.

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

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

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

For example, the indication information may include an information field including information on whether the corresponding 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 indication information is described as a coverage enhancement field, but the name is not limited thereto.

Referring to FIG. 9, the aforementioned coverage enhancement field may be added to an 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 various integer values.

Meanwhile, even when the indication information is included in SIB1, the above-described case of MIB may be applied. That is, a specific field for including indication information may be added to SIB1.

The MTC terminal may determine whether the corresponding cell is a cell supporting the MTC terminal using the aforementioned indication information (S810).

As an example, when the MTC terminal receiving the MIB or SIB1 does not support the MTC terminal, the MTC terminal determines that the current cell is a barred cell and performs a cell reselection procedure (S820). That is, the MTC terminal may select a cell by selecting another frequency having the same priority as the frequency of the current cell, or may select a cell of a frequency having a low priority. The process of step S800 is performed again for the selected cell.

As another example, when the cell supports the MTC terminal, it may receive the SIB1 based on the MIB information. Alternatively, the remaining SIBs may be received based on the SIB1 information. Meanwhile, the determination of whether the corresponding cell supports the MTC terminal may be performed in various ways as well as checking the above-described indication information. 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 configured for MTC is transmitted through a fixed radio resource, the MTC terminal may determine that the cell supports the MTC terminal when the SIBs are successfully received in the fixed radio resource. Alternatively, the MTC terminal may need to receive the DCI of the PDCCH or 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, the MTC dedicated SIB may be received based on the DCI of the PDCCH or the EPDCCH.

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

For example, after receiving the SIB1, the MTC terminal receives SIB2, 3, 4,... Instead of receiving an existing SIB, etc., MTC dedicated SIBs (eg, SIB2A, 3A, ...) may be received according to MTC help information and scheduling information of SIB1. The scheduling information may include at least one of time resource information, frequency resource information, SI message size information, or size information of the SIB message of the MTC dedicated SIBs. Alternatively, the MTC terminal receives SIB1 and then SIB2, 3, 4,... The MTC dedicated SIBs (eg, SIB2A, 3A, ...) may be received through the DCI of the PDCCH or the EPDCCH without receiving the existing SIB. SI messages or SIBs may be set to a fixed size and may be transmitted using a fixed frequency resource. In the case of PDCCH or EPDCCH, the corresponding MTC terminals attempt to receive using the newly defined MTC-SI-RNTI. MTC dedicated SIB may be configured with one or a plurality.

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

Scheduling Information of MTC Dedicated SIBs

Frequency resource information to which the corresponding SI message or SIB is to be transmitted: This may include the location or frequency hopping information of the frequency resource to which the SI message or SIB is to be transmitted.

Third embodiment

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

In this embodiment, the MTC terminal may receive SIBs other than SIB1 or SIB1A through a system information message. To this end, the scheduling information of MTC dedicated SIBs included in SIB1 or 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 message can be repeatedly transmitted several times.

SI scheduling information

System Information (SI) Message Period (si-Periodicity): Contains information about the frequency of the SI message.

■ SIB Mapping Information: Contains information about the SIB type included in the SI message.

Subframe information repetitively transmitted in the SI window: information indicating a subframe repeatedly transmitted in the SI window (for example, a bitmap, a list of radio frames and subframe numbers, an even / odd subframe, Start subframe and repeated transmission period, start subframe and repeated transmission number, etc.).

■ Frequency resource information to which the corresponding SI message or SIB is to be transmitted: The frequency resource location or frequency hopping information to which the SI message or SIB is to be transmitted may be included.

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

SIB messages (SIB2, 3, 4, ...) other than SIB1 or SIB1A are transmitted in a SI (System Information) message. Mapping information for SI messages of SIBs is included in SIB1 or SIB1A. The MTC terminal may receive SIB1 or SIB1A to obtain information about when other SIBs are transmitted. Each SIB is included in one SI message. Alternatively, one SI message may include one or several SIB messages with the same period. Several 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 may be transmitted in one SI window. Repeat transmission of the SI message is performed in the SI window, and information on which subframe the repeated transmission is performed may be preset through SIB1. The size and frequency resource information of each SI message or SIBs may be configured through SIB1A together with time resource information. Alternatively, each SI message may be of a fixed size and may be transmitted using a fixed frequency resource.

Referring to FIG. 10, the SI message 1 (SI # 1) may be set to a transmission period of 80 ms. Therefore, SI message 1 is transmitted within the SI window set by the scheduling information. For example, the SI message 1 may be transmitted in an SI window composed of SFN = 0 to SFN = 3, and may be transmitted in an SI window composed of SFN = 8 to SFN = 11 according to an 80 ms period. In addition, repetitive transmission may be performed within one SI window. For example, the SI message 1 may be repeatedly transmitted in

subframes

1 and 7 at SFN = 0 and SFN = 1. Similarly, repetitive transmission may be performed in SFN = 2 and SFN = 3.

Meanwhile, the SI message 2 (SI # 2) may also be transmitted in a transmission period of 160 ms in the SI window as in the SI message 1 described above. In addition, repetitive transmission may be performed in

subframes

2, 4, and 7 within each SI window.

MTC terminal of the present invention receives the MIB and SIB1 or SIB1A (S1100). MIB or SIB1 or SIB1A may include indication information indicating whether a corresponding cell supports MTC terminal. That is, when the cell performs an operation such as repetitive transmission for the MTC terminal, the cell broadcasts to the MIB or SIB1 or SIB1A through the corresponding indication information.

For example, to inform whether the corresponding cell supports the MTC terminal, 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 corresponding 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 may check whether the corresponding cell is a cell supporting the MTC terminal (S1110). Whether the cell supports the MTC terminal can be confirmed through the above-described indication information. Alternatively, whether the corresponding cell supports the MTC terminal may also be checked through whether the SIB1 or the SIB1A is repeatedly received. That is, whether the corresponding 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. For example, if the MTC dedicated SIB is successfully received, it may be determined that the corresponding cell supports the MTC terminal.

If the 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 the frequency of the current cell, or may select a cell of a frequency having a lower priority. The MTC terminal performs step S1100 again on 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 checks the scheduling information of SIB1 or SIB1A (S1130). For example, after receiving SIB1 or SIB1A, the MTC terminal receives

SIB

2, 3, 4,... Instead of receiving the existing SIB, the MTC terminal receives dedicated SIBs (eg, SIB2A, 3A, ...) according to MTC assistance information or scheduling information of SIB1 or SIB1A (S1140). Alternatively, the MTC terminal may receive MTC terminal dedicated SIBs (eg, SIB2A, 3A, ...) through the DCI of the PDCCH or EPDCCH. The size and frequency resource information of the corresponding SIBs may be configured together through SIB1A together with time resource information. Alternatively, the received SIBs may be of a fixed size and may be transmitted using a fixed frequency resource. Or, SIBs may be scheduled through DCI of PDCCH or EPDCCH. In the case of PDCCH or EPDCCH, the corresponding MTC terminals attempt to receive using the newly defined MTC-SI-RNTI. The MTC terminal dedicated SIB may be configured in one or a plurality.

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

SI scheduling information

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

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

In a method for transmitting system information in a base station according to another embodiment of the present invention, a master information block (MIB) or system information block 1 (SIB1) for a machine type communication (MTC) terminal The method includes setting scheduling information included in a), transmitting a master information block and a system information block 1, and repeatedly transmitting one or more system information blocks except the system information block 1 based on the scheduling information.

Referring to FIG. 12, the base station of the present invention includes setting scheduling information included in a master information block (MIB) or a system information block 1 (SIB1) for an MTC terminal. (S1210). For example, MIB or SIB1 may be configured to include scheduling information related to transmission resource or transmission time of MTC dedicated SIBs. As described above, the scheduling information may include information related to repetitive transmission and radio resource mapping of system information blocks except for SIB1. As an example, the scheduling information may include at least one of time and frequency axis radio resource information and repetitive transmission related information in which one or more system information is transmitted. As another example, the scheduling information may include one of type information, transmission period information, repeat transmission count information, repeat transmission period information, repeat transmission frame information, repeat transmission subframe information, start subframe information, and coverage level information of each of the one or more system information blocks. It may also include one or more pieces 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 the corresponding cell supports the MTC terminal. The MTC terminal may determine whether to use the corresponding cell using the indication information. Alternatively, the MTC terminal may check whether the corresponding cell supports the MTC terminal according to the transmission form of the MIB or SIB1. For example, when 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 transmitting the master information block and the system information block 1 (S1220). The aforementioned MIB and SIB1 may be transmitted to the MTC terminal. The MIB may include scheduling information of SIB1. Alternatively, SIB1 may be configured for MTC terminal only, and may be transmitted using a fixed size or a fixed frequency resource. Alternatively, transmission scheduling information of SIB1 may be transmitted through PDCCH or EPDCCH.

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

In addition, the base station may perform all the operations required to perform the above-described embodiments of the present invention as needed.

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

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

The MTC terminal 1300 according to another embodiment of the present invention includes a receiver 1330 and a master information block for receiving a master information block (MIB) and a system information block 1 (SIB1) or The controller 1310 may identify scheduling information included in the system information block 1. Also, the receiver 1330 may repeatedly receive one or more system information blocks except for the system information block 1 based on the scheduling information. In addition, the receiver 1330 receives downlink control information, data, and a message from a base station through a corresponding channel. Meanwhile, the scheduling information received by the receiver 1330 may include information related to repetitive transmission and radio resource mapping of system information blocks except for SIB1. As an example, the scheduling information may include at least one of time and frequency axis radio resource information and repetitive transmission related information in which one or more system information is transmitted. As another example, the scheduling information may include one of type information, transmission period information, repeat transmission count information, repeat transmission period information, repeat transmission frame information, repeat transmission subframe information, start subframe information, and coverage level information of each of the one or more system information blocks. It may also include one or more pieces 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 1310 is a general MTC terminal according to the SIB scheduling information required to perform the above-described present invention and the MTC dedicated SIB setting and the reception of system information efficiently in a situation where the frequency bandwidth is limited ( The operation of 1300 is controlled.

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

The base station 1400 according to another embodiment of the present invention is a control unit for setting the scheduling information contained in the master information block (MIB) or system information block 1 (System Information Block 1, SIB1) for the MTC terminal And a transmitter 1420 for transmitting the master information block and the system information block 1 and repeatedly transmitting one or more system information blocks except 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 and radio resource mapping of system information blocks except for SIB1. As an example, the scheduling information may include at least one of time and frequency axis radio resource information and repetitive transmission related information in which one or more system information is transmitted. As another example, the scheduling information may include one of type information, transmission period information, repeat transmission count information, repeat transmission period information, repeat transmission frame information, repeat transmission subframe information, start subframe information, and coverage level information of each of the one or more system information blocks. It may also include one or more pieces 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 1410 controls the overall operation of the base station 1400 according to the setting of the MTC dedicated SIB required for carrying out the present invention and the repeated transmission of the MTC dedicated SIB.

Meanwhile, the transmitter 1420 and the receiver 1430 are used to transmit and receive signals, messages, and data necessary for carrying out the above-described present invention.

The standard contents or standard documents mentioned in the above embodiments are omitted to simplify the description of the specification and form a part of the present specification. Therefore, the addition of the contents of the standard and part of the standard documents to the specification or the description in the claims should be interpreted as falling within the scope of the present invention.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

CROSS-REFERENCE TO RELATED APPLICATIONCROSS-REFERENCE TO RELATED APPLICATION

This patent application is filed with the Patent Application No. 10-2014-0133315 filed in Korea on October 02, 2014 and Patent Application No. 10-2015-0114271 for Korea filed on August 13, 2015. Priority is claimed under section (a) (35 USC § 119 (a)), all of which is incorporated by reference in this patent application. In addition, if this patent application claims priority for the same reason for countries other than the United States, all its contents are incorporated into this patent application by reference.

Claims

In the method of receiving a machine type communication (MTC) terminal system information,

Receiving a Master Information Block (MIB) and a System Information Block 1 (SIB1);

Confirming scheduling information included in the master information block or the 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.
The method of claim 1,

The system information block 1 and the one or more system information blocks,

And MTC terminal-only system information that is repeatedly transmitted a predetermined number of times.
The method of claim 1,

The scheduling information,

And at least one of time and frequency axis radio resource information and repetitive transmission related information at which the one or more system information is transmitted.
The method of claim 1,

The scheduling information,

At least one of type information, transmission period information, repeated transmission number information, repeated transmission period information, repeated transmission frame information, repeated transmission subframe information, starting subframe information, and coverage level information of each of the one or more system information blocks. Characterized in that.
The method of claim 1,

The scheduling information,

At least one of system information message scheduling information including window size information of a system information message and subframe information repeatedly transmitted within the window size;

And wherein the system information message includes the one or more system information blocks having the same period.
In the method for the base station to transmit the system information,

Setting scheduling information included in a master information block (MIB) or a system information block 1 (SIB1) for a machine type communication (MTC) terminal;

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 method of claim 6,

The system information block 1 and the one or more system information blocks,

And MTC terminal-only system information that is repeatedly transmitted a predetermined number of times.
The method of claim 6,

The scheduling information,

And at least one of time and frequency axis radio resource information and repetitive transmission related information at which the one or more system information is transmitted.
The method of claim 6,

The scheduling information,

At least one of type information, transmission period information, repeated transmission number information, repeated transmission period information, repeated transmission frame information, repeated transmission subframe information, starting subframe information, and coverage level information of each of the one or more system information blocks. Characterized in that.
The method of claim 6,

The scheduling information,

At least one of system information message scheduling information including window size information of a system information message and subframe information repeatedly transmitted within the window size;

And wherein the system information message includes the one or more system information blocks having the same period.
In the Machine Type Communication (MTC) terminal for receiving system information,

A receiver for receiving a master information block (MIB) and a system information block 1 (SIB1); And

It includes a control unit for confirming the scheduling information included in the master information block or the system information block 1,

The receiving unit repeatedly receives one or more system information blocks except for the system information block 1 based on the scheduling information.
The method of claim 11,

The system information block 1 and the one or more system information blocks,

MTC terminal characterized in that it comprises MTC terminal dedicated system information that is repeatedly transmitted a predetermined number of times.
The method of claim 11,

The scheduling information,

MTC terminal, characterized in that it comprises at least one of time and frequency axis radio resource information and repetitive transmission-related information, the one or more system information is transmitted.
The method of claim 11,

The scheduling information,

At least one of type information, transmission period information, repeated transmission number information, repeated transmission period information, repeated transmission frame information, repeated transmission subframe information, starting subframe information, and coverage level information of each of the one or more system information blocks. MTC terminal, characterized in that.
The method of claim 11,

The scheduling information,

At least one of system information message scheduling information including window size information of a system information message and subframe information repeatedly transmitted within the window size;

The system information message includes the at least one system information block having the same period.
In the base station for transmitting system information,

A controller configured to set scheduling information included in a master information block (MIB) or a system information block 1 (SIB1) for a machine type communication (MTC) terminal; And

Transmit the master information block and the system information block 1,

And a transmitter for repeatedly transmitting one or more system information blocks except for the system information block 1 based on the scheduling information.
The method of claim 16,

The system information block 1 and the one or more system information blocks,

A base station comprising MTC terminal dedicated system information that is repeatedly transmitted a predetermined number of times.
The method of claim 16,

The scheduling information,

And at least one of time and frequency axis radio resource information and repetitive transmission related information at which the one or more system information is transmitted.
The method of claim 16,

The scheduling information,

At least one of type information, transmission period information, repeated transmission number information, repeated transmission period information, repeated transmission frame information, repeated transmission subframe information, starting subframe information, and coverage level information of each of the one or more system information blocks. A base station characterized in that.
The method of claim 16,

The scheduling information,

At least one of system information message scheduling information including window size information of a system information message and subframe information repeatedly transmitted within the window size;

And the system information message includes the one or more system information blocks having the same period.