WO2016048063A1 - Method for transmitting/receiving signal by mtc ue, and apparatus therefor - Google Patents

Abstract

Disclosed is a technology for a signal transmission/reception method by a machine type communication (MTC) UE and a base station, and an apparatus therefor. More particularly, the present invention relates to a method of configuring, for each cell, a coverage improvement level for repeated signal transmitting or receiving operations of an MTC UE, and an apparatus therefor. Particularly, the present invention provides a method and an apparatus for transmitting/receiving a signal by an MTC UE, the method comprising the steps of: receiving maximum coverage improvement level information from a base station; determining a coverage improvement level value for transmitting an uplink signal on the basis of the maximum coverage improvement level information; and repeatedly transmitting, a predetermined number of times, the uplink signal according to the coverage improvement level value. Further, the present invention provides a method and an apparatus for receiving a downlink signal by the MTC UE, the method comprising the steps of: monitoring a common area and a UE-specific area which are individually configured for the MTC UE; receiving common control information or scheduling information on the common control information, through the common area; and receiving UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information, through the UE-specific area.

Description

Signal transmission and reception method of MTC terminal and device therefor

The present invention relates to a method and apparatus for transmitting and receiving signals between a machine type communication (MTC) terminal and a base station. More specifically, the present invention relates to a method and apparatus for setting a coverage enhancement level for a cell repeating transmission and reception operation of an MTC terminal for each cell. The present invention also relates to a downlink resource configuration technique for supporting a low complexity UE category / type for an MTC terminal in a 3GPP LTE / LTE-Advanced system. In particular, in order to efficiently support a low complexity UE category / type for MTC operation, a time division scheme of a common control transmission / reception interval and a UE-specific transmission / reception interval is performed. The present invention relates to a technique for multiplexing.

Machine type communication (hereinafter referred to as "MTC" communication) is a form of data communication, in which one or more entities represent machine or 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 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.

However, repeatedly transmitting a signal may cause unnecessary power waste or signal increase. Accordingly, there is a need for a method of determining an effective number of repeated transmissions according to the coverage or location of an MTC terminal.

In addition, in the case of the MTC terminal, since it can be set to operate in a limited frequency band, there may be a problem that the control information, etc. in the existing LTE network is not normally received. That is, the control information reception bandwidth of the existing LTE network and the available reception bandwidth of the MTC terminal is different, there may be a problem that the MTC terminal can not receive the control information using the LTE network.

In the background described above, the present invention proposes a method and apparatus for setting a maximum value of a coverage enhancement level for each cell when a plurality of coverage enhancement levels are applied to an MTC terminal.

The present invention also proposes a method and apparatus for transmitting and receiving an uplink signal and a downlink signal of a terminal and a base station when the maximum coverage enhancement level is set for each cell.

In addition, the present invention is to propose a method and apparatus for configuring a downlink resource to be able to receive control information using the LTE network even in a limited bandwidth of the MTC terminal.

In addition, the present invention is to propose a method and apparatus for configuring a separate downlink resources to reduce the reception complexity and power consumption of the MTC terminal, and transmitting and receiving downlink control information using the corresponding downlink resources.

In order to solve the above problems, the present invention provides a method for transmitting and receiving a signal from a machine type communications (MTC) terminal, the method comprising receiving maximum coverage enhancement level information from a base station and transmitting uplink signals based on the maximum coverage enhancement level information. The method includes determining a coverage enhancement level value and transmitting the uplink signal a predetermined number of times according to the coverage enhancement level value. The present invention also provides a method, wherein the maximum coverage enhancement level information includes information on a maximum coverage enhancement level value among a plurality of coverage enhancement level values. In addition, the maximum coverage enhancement level information provides a method characterized in that it is set to a cell specific value. In addition, the maximum coverage enhancement level information provides a method characterized in that it is received through a physical broadcast channel (PBCH) or system information blocks (SIB). Further, the maximum coverage enhancement level information includes downlink maximum coverage enhancement level information or uplink maximum coverage enhancement level information, and the downlink maximum coverage enhancement level information and the uplink maximum coverage enhancement level information are set to different values, respectively. It provides a method characterized in that.

In addition, the present invention provides a method for transmitting and receiving a signal by the base station, setting the maximum coverage enhancement level information, transmitting the maximum coverage enhancement level information to the MTC terminal and the uplink signal from the MTC terminal to the coverage enhancement level value According to the invention provides a method comprising the step of repeatedly receiving a predetermined number. In addition, the maximum coverage enhancement level information provides a method comprising the information on the maximum coverage enhancement level value of the plurality of coverage enhancement level values. In addition, the maximum coverage enhancement level information provides a method characterized in that it is set to a cell specific value. In addition, the maximum coverage enhancement level information provides a method characterized in that the transmission through the physical broadcast channel (PBCH) or system information blocks (SIB). The maximum coverage enhancement level information may include downlink maximum coverage enhancement level information or uplink maximum coverage enhancement level information, and the downlink maximum coverage enhancement level information and the uplink maximum coverage enhancement level information may be different values. It provides a method characterized in that it is set.

In addition, the present invention provides a machine type communication (MTC) terminal for transmitting and receiving a signal, the receiver for receiving the maximum coverage enhancement level information from the base station and the coverage enhancement level value for uplink signal transmission based on the maximum coverage enhancement level information; Provided is a terminal device including a control unit for determining and a transmitter for repeatedly transmitting an uplink signal a predetermined number of times according to a coverage enhancement level value. The present invention also provides a terminal apparatus, wherein the maximum coverage enhancement level information includes information on the maximum coverage enhancement level value among a plurality of coverage enhancement level values. In addition, the maximum coverage enhancement level information provides a terminal device, characterized in that set to a cell-specific value. The maximum coverage enhancement level information is provided through a physical broadcast channel (PBCH) or system information blocks (SIB). The maximum coverage enhancement level information may include downlink maximum coverage enhancement level information or uplink maximum coverage enhancement level information, and the downlink maximum coverage enhancement level information and the uplink maximum coverage enhancement level information may be different values. In another aspect, the present invention provides a base station for transmitting and receiving a signal, the control unit for setting the maximum coverage enhancement level information, and the transmitter and the MTC terminal for transmitting the maximum coverage enhancement level information to the MTC terminal The present invention provides a base station apparatus including a receiver for repeatedly receiving an uplink signal from a predetermined number of times according to a coverage enhancement level value. In addition, the maximum coverage enhancement level information provides a base station apparatus comprising information on the maximum coverage enhancement level value of a plurality of coverage enhancement level values. In addition, the maximum coverage enhancement level information provides a base station apparatus characterized in that the cell-specific value is set. In addition, the maximum coverage enhancement level information provides a base station apparatus characterized in that the transmission through a physical broadcast channel (PBCH) or system information blocks (SIB). The maximum coverage enhancement level information may include downlink maximum coverage enhancement level information or uplink maximum coverage enhancement level information, and the downlink maximum coverage enhancement level information and the uplink maximum coverage enhancement level information may be different values. It provides a base station apparatus characterized in that the set.

In addition, the present invention provides a method for receiving a downlink signal from a machine type communication (MTC) terminal, the common control information (Common control through the common area and the terminal specific area monitoring and common area separately configured for the MTC terminal) information or scheduling information regarding common control information and receiving UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through a UE-specific region. It provides a method comprising a.

The present invention also provides a method for transmitting a downlink signal by a base station, the method comprising: setting a common region and a terminal specific region for a machine type communication (MTC) terminal and common control information through a common region or Transmitting scheduling information for common control information and transmitting UE-specific control information or downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region. Provide a method.

In addition, the present invention, in the machine type communication (MTC) terminal receiving the downlink signal, common control information (Common control information) through a common area and a control unit for monitoring the common area and the terminal specific area separately configured for the MTC terminal Or a receiving unit configured to receive scheduling information on common control information and to receive UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through a UE-specific region. Provides a terminal device.

In addition, the present invention is a base station for transmitting a downlink signal, common control information (common control information) or common control through a common area and a control unit for setting a common area and terminal specific area for MTC (Machine Type Communication) terminal A base station apparatus including a transmitter for transmitting scheduling information about the information and transmitting UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through a UE-specific region; to provide.

According to the present invention described above, the MTC terminal uses the maximum coverage enhancement level information received from the base station, and has the effect of repeatedly performing transmission by setting the maximum value of the coverage enhancement level in a cell specific manner.

In addition, according to the present invention, the maximum number of repetitions is determined according to the location of the MTC terminal and the number of necessary repetitions, thereby reducing the power consumption and signal waste.

In addition, according to the present invention, it is possible to receive control information using the LTE network even in a limited bandwidth of the MTC terminal.

In addition, according to the present invention, it is possible to reduce the reception complexity and power consumption of the MTC terminal and to receive downlink control information normally.

1 is a diagram illustrating an example of repetitive transmission of an uplink signal and a downlink signal of an MTC terminal according to the present invention.

2 is a signal diagram illustrating a signal transmission and reception procedure between an MTC terminal and a base station according to an embodiment of the present invention.

3 is a flowchart illustrating an operation of an MTC terminal according to another embodiment of the present invention.

4 is a flowchart illustrating an operation of a base station according to another embodiment of the present invention.

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

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

7 is a diagram illustrating the operation of the MTC terminal according to an embodiment of the present invention.

8 is a diagram illustrating an operation 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 supports UE category / type defined in the existing 3GPP Release-12 or lower, or newly defined Release-13 low cost (or lower power consumption). low complexity) can mean 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.

That is, in the present specification, a base station or a cell is interpreted in a comprehensive sense to indicate some areas or functions covered by a base station controller (BSC) in CDMA, a NodeB in WCDMA, an eNB or a sector (site) in LTE, and the like. It is meant to cover various coverage areas such as mega cell, macro cell, micro cell, pico cell, femto cell 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 (or MTC terminal) and the base station are two transmitting and receiving entities used to implement the technology or the technical idea described in the present specification and are used in a comprehensive sense and are not limited by the terms or words specifically referred to. . Here, the uplink (Uplink, UL, or uplink) means a method for transmitting and receiving data to the base station by the user terminal (or MTC terminal), the downlink (Downlink, DL, or downlink) is the user by the base station It means a method for transmitting and receiving data to the terminal (or MTC terminal).

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 of 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, system information, which is a common control message, is transmitted through a single downlink subframe. It became. That is, downlink signals such as System Information Blocks (SIBs), paging messages, or random access responses (RARs) are transmitted through one downlink subframe. Specifically, in the common control message, PDSCH transmission resource allocation information in which corresponding SIBs, paging, or RARs are transmitted through a PDCCH of an arbitrary downlink subframe, and the terminal in the cell is based on this. They could receive the corresponding SIBs, paging or RAR respectively.

That is, according to the transmission / reception method for 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 DRX) Is configured, in the corresponding cell by monitoring the Common Search Space (CSS) and the UE-specific Search Space (USS) configured through the downlink control channel PDCCH or EPDCCH of all downlink subframes configured in the DRX on period Obtains scheduling information on broadcasting / multicasting traffic such as transmitted System Information Block (SIB), random access response (RAR), paging message, and scheduling information on unicasting traffic for the corresponding UE. can do. 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 can refer to the 3GPP TS36.213 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, for convenience of description, a new low complexity UE category / type terminal that performs the MTC operation by satisfying the above condition is referred to as an MTC terminal.

When the new MTC terminal described above is introduced, a coverage enhancement technique such as repetition may be applied according to the radio channel environment of the corresponding MTC terminal. In this case, a coverage enhancement technique such as repetitive transmission for the above common control information needs to be defined. In particular, a plurality of coverage enhancement levels are defined according to the amount of coverage enhancement required according to the radio channel environment, and the coverage enhancement technique is provided for each coverage enhancement level. enhancement techniques (eg, repetition times) may be applied differently. That is, the number of repetitions may be applied differently for each coverage enhancement level.

1 is a diagram illustrating an example of repetitive transmission of an uplink signal and a downlink signal of an MTC terminal according to the present invention.

Referring to FIG. 1, in case of any MTC UE, a UL DCI format including single UL grant information for coverage enhancement is provided through PDCCH or EPDCCH of a plurality of downlink subframes. Repetition is sent. In addition, the PUSCH transmission corresponding to the corresponding uplink grant may also be transmitted by being repeated through a plurality of uplink subframes. In addition, PHICH for feedback feedback (HARQ ACK / NACK) for the PUSCH transmission may also be transmitted by repetition through a plurality of downlink subframes. However, FIG. 1 is an example and is not limited to the number of repetitions, repetitive transmission timings, and the like of FIG. 1. In addition, various uplink signals and downlink signals may be repeatedly transmitted and received through a plurality of subframes.

Hereinafter, in the present invention, when one or more coverage enhancement levels are applied to an MTC terminal, a method for setting a maximum coverage enhancement level supported for each cell and a common control message accordingly control message)

2 is a signal diagram illustrating a signal transmission and reception procedure between an MTC terminal and a base station according to an embodiment of the present invention.

Referring to FIG. 2, the MTC terminal 200 according to an embodiment of the present invention may transmit and receive a signal at a repetition number set according to a coverage enhancement level in transmitting and receiving a signal with the base station 209. The coverage enhancement level may be set to one or more. For example, the coverage enhancement level 1 may set a plurality of coverage enhancement levels by repeating the A number of times, the coverage enhancement level 2 by the B number of times, and the like. The MTC terminal 200 may select any one of a plurality of coverage enhancement levels according to whether the signal transmission and reception is successful or a predetermined setting, and may repeatedly transmit and receive a signal according to the number of repetitions of the corresponding coverage enhancement level. Alternatively, the MTC terminal 200 or the base station 209 may transmit a signal while changing a plurality of coverage enhancement levels according to whether the signal is successfully transmitted.

In the present invention, a maximum coverage enhancement level supported for each cell is set, and a signal transmission / reception method using the same will be described.

To this end, the base station 209 transmits the maximum coverage enhancement level information set separately for each cell to the MTC terminal 200 (S210). The maximum coverage enhancement level information may include only the maximum coverage enhancement level information for the uplink signal. Alternatively, the maximum coverage enhancement level information may include only maximum coverage enhancement level information for the downlink signal. Alternatively, the maximum coverage enhancement level information may include both the maximum coverage enhancement level information for the uplink signal and the maximum coverage enhancement level information for the downlink signal.

The base station 209 may transmit maximum coverage enhancement level information on the PBCH or SIBs. As described below, the maximum coverage enhancement level information for each uplink signal or downlink signal may be transmitted through another channel or radio resource.

The MTC terminal 200 may receive a downlink signal transmitted from the base station 209 through a plurality of subframes according to the number of repetitions determined based on the coverage enhancement level and the maximum coverage enhancement level set in the corresponding cell (S220). .

Similarly, even when the MTC terminal 200 transmits an uplink signal, the MTC terminal 200 repeatedly transmits an uplink signal through a plurality of subframes using a coverage enhancement level configured in the MTC terminal 200 and a received maximum coverage enhancement level. It may be (S230).

Hereinafter, a case in which the MTC terminal transmits an uplink signal for convenience of explanation will be described. However, as described above, even when the base station transmits the downlink signal, the present invention can be equally applied. That is, the base station may repeatedly transmit the downlink signal to the MTC terminal by using the maximum coverage enhancement level information set according to each cell.

3 is a flowchart illustrating an operation of an MTC terminal according to another embodiment of the present invention.

In a method for transmitting and receiving an MTC terminal signal according to another embodiment of the present invention, receiving a maximum coverage enhancement level information from a base station and determining a coverage enhancement level value for uplink signal transmission based on the maximum coverage enhancement level information And transmitting the uplink signal repeatedly a predetermined number of times according to the coverage enhancement level value.

Referring to FIG. 3, the MTC terminal of the present invention includes receiving maximum coverage enhancement level information from the base station (S310). The maximum coverage enhancement level information includes information on the maximum coverage enhancement level value among the plurality of coverage enhancement level values.

In addition, the maximum coverage enhancement level information may be set to a cell specific value.

For example, when supporting coverage enhancement for an MTC terminal or a general LTE terminal performing the above-described MTC operation in a plurality of cells, it is required according to the coverage geometry characteristic of each cell. The coverage enhancement level may be different. Therefore, a maximum coverage enhancement level may be set differently for each cell introduced by an arbitrary operator.

To this end, N coverage enhancement levels may be defined according to the amount of coverage enhancement required in any LTE system. Here, N is any natural number, and in the present invention, the value is not limited. In this case, the N coverage enhancement levels defined may be commonly applied to uplink and downlink. Alternatively, N coverage enhancement levels may be defined for the downlink, and separate L coverage enhancement levels may be defined for the uplink. In this case, L is also any natural number, and its value is not limited.

Accordingly, N coverage enhancement levels are defined up to coverage enhancement levels 1, 2, ..., N, and the maximum coverage enhancement level for the downlink for each cell is defined. enhancement level) M (where 1 ≦ M ≦ N) can be set. Similarly, even when the number of uplink coverage enhancement levels is different from L, the maximum coverage enhancement level for uplink may be set to M (where 1 ≦ M ≦ L), or may be set to another value. As such, the maximum coverage enhancement level may be set separately for each cell.

Meanwhile, the maximum coverage enhancement level information may be received through a physical broadcast channel (PBCH) or system information blocks (SIB).

For example, the above-mentioned maximum coverage enhancement level information may be transmitted to MTC terminals in a corresponding cell through a PBCH newly defined for a PBCH or an MTC terminal. In this case, the coverage enhancement of the downlink common control channel or common control message of the cell according to the cell-specific maximum coverage enhancement level set through the PBCH. The level and thus the number of repetitions can be determined. The downlink common control channel may be a PDCCH or EPDCCH for transmitting common control information that is transmitted by being CRC scrambled through SI-RNTI, RA-RNTI, or P-RNTI. In addition, the common control message may be a System Information Blocks (SIBs), a random access response (RAR), or a paging message. However, regardless of the scheduling method of the SIBs, RARs, or paging messages, the coverage enhancement level of the downlink common control channel or the common control message or a repetition technique determined according to the maximum coverage enhancement level of the PBCH is determined. All such cases may fall within the scope of the present invention. On the other hand, even when the uplink signal is transmitted and received can be applied in the same way as the case of the downlink signal described above.

That is, the MTC terminal may determine a coverage enhancement level value for uplink signal transmission based on the received maximum coverage enhancement level information (S320). In detail, the MTC terminal may determine the coverage enhancement level value by further using the maximum coverage enhancement level information received in the predefined coverage enhancement level setting method. Therefore, the coverage enhancement level value determined by the MTC terminal cannot exceed the maximum coverage enhancement level.

The MTC terminal may repeatedly transmit an uplink signal through a plurality of subframes according to the determined coverage enhancement level value (S330). That is, in transmitting the uplink signal, the MTC terminal may repeatedly transmit the uplink signal according to the number of repetitions determined according to the coverage enhancement level value.

Meanwhile, the aforementioned maximum coverage enhancement level information may include downlink maximum coverage enhancement level information or uplink maximum coverage enhancement level information. In addition, downlink maximum coverage enhancement level information or uplink maximum coverage enhancement level information may be set to the same or different values.

For example, the maximum coverage enhancement level for the uplink supported by each cell may be set to an M value in the same manner as the downlink maximum coverage enhancement level described above and transmitted through the PBCH.

Alternatively, the maximum coverage enhancement level for the uplink may be set to a value different from the downlink maximum coverage enhancement level. For example, the uplink maximum coverage enhancement level may be set to P and transmitted to MTC terminals in a corresponding cell through a PBCH information region newly defined for a separate PBCH or MTC terminal. Here, P may be defined as a value of 1 ≦ P ≦ N or a value of 1 ≦ P ≦ L when a separate coverage enhancement level is defined in the uplink.

Alternatively, the maximum coverage enhancement level for the uplink supported by each cell may be set through SIBs and transmitted to the MTC terminal in the cell. In this case, the corresponding uplink signal may be defined as the coverage enhancement level for the PRACH or the number of repetitions according to the maximum coverage enhancement level.

Meanwhile, the cell specific maximum coverage enhancement level for the aforementioned downlink may be used for defining a coverage enhancement level of a downlink common control channel or a common control message. In addition, the cell specific maximum coverage enhancement level for the downlink may be used for defining a repetition technique (eg, the number of repetitions) according to the coverage enhancement level. In addition, the cell specific maximum coverage enhancement level for the downlink may be used as a value defining a coverage enhancement level for the downlink control / data channel that can be set for each terminal or a maximum value of the repetition technique accordingly.

Similarly, the cell specific maximum coverage enhancement level for the uplink may be used to determine the coverage enhancement level of the PRACH or an iterative technique accordingly. In addition, the cell-specific maximum coverage enhancement level for uplink may be used as a value defining a coverage enhancement level for UE-specific uplink control / data channel or a maximum value of the repetition technique accordingly. Can be.

4 is a flowchart illustrating an operation of a base station according to another embodiment of the present invention.

In a method for transmitting and receiving a signal by a base station according to another embodiment of the present invention, the step of setting the maximum coverage enhancement level information, transmitting the maximum coverage enhancement level information to the MTC terminal and the coverage of the uplink signal from the MTC terminal And repeatedly receiving the predetermined number of times according to the enhancement level value.

Referring to FIG. 4, the base station includes setting maximum coverage enhancement level information (S410). As described above, the base station may set the maximum coverage enhancement level information for each cell. In this case, the maximum coverage enhancement level for the downlink and the maximum coverage enhancement level for the uplink may be set, respectively. Also, the maximum coverage enhancement level information may include information on the maximum coverage enhancement level value among the plurality of coverage enhancement level values. In addition, downlink maximum coverage enhancement level information and uplink maximum coverage enhancement level information may be set to different values or the same value, respectively.

The base station includes transmitting the maximum coverage enhancement level information to the MTC terminal (S420). For example, the base station may transmit maximum coverage enhancement level information set according to each cell through a physical broadcast channel (PBCH) or system information blocks (SIB). As described above, an uplink maximum coverage enhancement level and a downlink maximum coverage enhancement level may be transmitted through PBCH or SIB according to an embodiment.

In addition, the base station may include the step of repeatedly receiving the uplink signal from the MTC terminal a predetermined number of times according to the coverage enhancement level value (S430). The base station may receive the uplink signal transmitted based on the coverage enhancement level and the maximum coverage enhancement level information set for each terminal. The uplink signal may be repeatedly received through a plurality of subframes.

Alternatively, the base station may repeatedly transmit the downlink signal to the MTC terminal at a repetition number set according to the maximum coverage enhancement level information.

In addition, the base station may perform the base station operation required to perform the above-described operation of the present invention.

As described above, the present invention provides an effect of performing repeated transmission by setting the maximum value of the coverage enhancement level in a cell specific manner using the maximum coverage enhancement level information received by the MTC terminal from the base station. In addition, the present invention determines the maximum number of repetitions according to the position of the MTC terminal and the number of necessary repetitions, thereby providing an effect of reducing power consumption and signal waste.

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

Referring to FIG. 5, the MTC terminal 500 according to another embodiment of the present invention provides a receiver 530 for receiving maximum coverage enhancement level information from a base station and uplink signal transmission based on the maximum coverage enhancement level information. The controller 510 determines a coverage enhancement level value and a transmitter 520 repeatedly transmitting the uplink signal a predetermined number of times according to the coverage enhancement level value.

The receiver 530 may receive maximum coverage enhancement level information set by the base station. Maximum coverage enhancement level information may be set for each cell. That is, it may be set to a cell specific value. In addition, the maximum coverage enhancement level information may include at least one of maximum coverage enhancement level for downlink and maximum coverage enhancement level for uplink. Also, the maximum coverage enhancement level information may include information on the maximum coverage enhancement level value among the plurality of coverage enhancement level values. In addition, downlink maximum coverage enhancement level information and uplink maximum coverage enhancement level information may be set to different values or the same value, respectively. Meanwhile, the receiver 530 may receive maximum coverage enhancement level information through the PBCH or the SIB.

In addition, the receiver 530 receives downlink control information, data, and a message from a base station through a corresponding channel. The downlink signal or data may be repeatedly received at a repetition number determined according to the maximum coverage enhancement level described above.

The controller 510 may determine a coverage enhancement level value for uplink signal transmission based on the maximum coverage enhancement level information. In addition, when a plurality of coverage enhancement levels are applied to the MTC terminal required to perform the above-described present invention, the controller 510 is a terminal for transmitting and receiving signals and data according to the maximum coverage enhancement level supported for each cell. To control the overall behavior of the.

The transmitter 520 may repeatedly transmit the uplink signal a predetermined number of times according to the coverage enhancement level value. The transmitter 520 may repeatedly transmit an uplink signal through a plurality of subframes. In this case, the number of repetitions may not exceed the number of repetitions of the maximum coverage enhancement level. In addition, the transmitter 520 transmits uplink control information, data, and messages to the base station through a corresponding channel.

Each configuration of the above-described MTC terminal may perform operations of the MTC terminal required to perform the present invention described with reference to FIGS. 1 to 4, respectively.

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

Referring to FIG. 6, the base station 600 according to another embodiment of the present invention includes a control unit 610 for setting the maximum coverage enhancement level information, a transmitter 620 for transmitting the maximum coverage enhancement level information to the MTC terminal, and the MTC. It may include a receiving unit 630 for repeatedly receiving a predetermined number of times from the terminal according to the coverage enhancement level value.

The controller 610 sets maximum coverage enhancement level information. As described above, the controller 610 may set maximum coverage enhancement level information for each cell. In this case, the controller 610 may set the maximum coverage enhancement level for the downlink and the maximum coverage enhancement level for the uplink, respectively. Also, the maximum coverage enhancement level information may include information on the maximum coverage enhancement level value among the plurality of coverage enhancement level values. In addition, downlink maximum coverage enhancement level information and uplink maximum coverage enhancement level information may be set to different values or the same value, respectively. In addition, when a plurality of coverage enhancement levels are applied to the MTC terminal required to perform the above-described present invention, the controller 610 may be configured to transmit and receive signals and data according to the maximum coverage enhancement level supported by each cell. Control the overall operation of the base station.

The transmitter 620 may transmit the maximum coverage enhancement level information to the MTC terminal. For example, the transmitter 620 may transmit maximum coverage enhancement level information set according to each cell through a physical broadcast channel (PBCH) or system information blocks (SIB). As described above, the transmitter 620 may transmit an uplink maximum coverage enhancement level and a downlink maximum coverage enhancement level through a PBCH or SIB according to an embodiment. In addition, the transmitter 620 may repeatedly transmit the downlink signal to the MTC terminal at a repetition number set according to the maximum coverage enhancement level information.

The receiver 630 may repeatedly receive the uplink signal from the MTC terminal a predetermined number of times according to the coverage enhancement level value. The receiver 630 may receive an uplink signal transmitted based on the coverage enhancement level and the maximum coverage enhancement level information set for each terminal. The receiver 630 may repeatedly receive the uplink signal through a plurality of subframes.

In addition, the transmitter 620 and the receiver 630 are used to transmit and receive signals, messages, and data necessary for carrying out the present invention.

Each configuration of the above-described base station may perform operations of the base station required to carry out the present invention described with reference to FIGS. 1 to 4.

Meanwhile, in the case of the above-described MTC terminal, due to the characteristics of UE RF bandwidth reduction limited to 1,4 MHz, LTE based on any system bandwidth (for example, 5 MHz, 10 MHz, 20 MHz, etc.) except for 1.4 MHz When operating in the network, it is impossible to receive the PDCCH. In addition, repetitive transmission and reception for each uplink and downlink radio channel and signal may be required according to a coverage enhancement level required for each MTC terminal. In addition, unlike the conventional UE, in the case of low complexity UE category / type, simultaneous transmission / reception of a plurality of radio channels and signals may not be implemented. Simultaneous reception of unicast traffic and broadcast traffic may not be possible.

In order to solve this problem, the present invention proposes a downlink resource configuration method for an MTC terminal. In particular, a common region and a UE-specific region are separately defined as a method for reducing reception complexity and power consumption of a terminal, and broadcast for an arbitrary MTC terminal. We propose a method of transmitting / receiving multicast traffic and unicast traffic using separate time resources.

7 is a diagram illustrating the operation of the MTC terminal according to an embodiment of the present invention.

A method of receiving a downlink signal by a machine type communication (MTC) terminal according to an embodiment of the present invention includes monitoring a common region and a terminal specific region separately configured for an MTC terminal and common control information through a common region. receiving scheduling information on control information or common control information and receiving UE-specific control information or downlink data channel (PDSCH) according to the UE-specific control information through a UE-specific region; It may include a step.

Referring to FIG. 7, the MTC terminal of the present invention may include monitoring a common area and a terminal specific area separately set for the MTC terminal (S710). In the present invention, a common region and a UE-specific region for MTC terminals are defined. The common area may be a cell specific area for MTC terminals in a cell, and the terminal specific area may be an area configured for each MTC terminal.

The common area and the terminal specific area may be set by the base station. The configuration information of the common area or the terminal specific area may be received through the base station or may be predefined and stored. For example, the time resource and frequency resource configuration information for the UE specific region may be received through higher layer signaling. Alternatively, time resource or frequency resource configuration information for the common region may be received through the PBCH.

On the other hand, the configuration information includes information related to time resources and frequency resources for the common region or the terminal specific region. For example, the time resource configuration information for the common region or the terminal specific region may include configuration information for the subframe pattern or the radio frame pattern. Alternatively, frequency resources for the common region or the terminal specific region may be allocated in units of six consecutive PRBs. Information on the allocated frequency resource may be included in the setting information and received.

For example, configuration information on the subframe pattern or the radio frame pattern may be allocated through cell specific or terminal specific higher layer signaling. Alternatively, the configuration information on the subframe pattern or the radio frame pattern includes subframe set information and may be allocated through a system information block for the MTC terminal.

Meanwhile, the MTC terminal may include receiving common control information or scheduling information on common control information through a common area (S720). The MTC terminal may receive system information, random access response information, or paging information through the aforementioned common area. Alternatively, the MTC terminal may receive scheduling information about each of system information, random access response information, or paging information through a common region. The scheduling information may be received through monitoring the common search space of the control channel.

In addition, the MTC terminal may include receiving UE-specific control information through the terminal specific region (S730). The MTC terminal receives terminal specific control information set for each MTC terminal through the terminal specific region. For example, UE-specific DCI may be received. The MTC terminal may receive downlink data traffic through the PDSCH based on the received terminal specific DCI.

Hereinafter, the method of transmitting and receiving information through the aforementioned common area and terminal specific area will be described in more detail.

In the present invention, a common region and a UE-specific region for any MTC terminal may be set. The common region is a cell-specific region in which common control information is transmitted for a terminal in a cell. That is, system information blocks (SIBs), random access response (RAR), or paging messages are transmitted through corresponding broadcast / multicast regions of a common region. Accordingly, the MTC terminal in the cell may receive SIBs, RARs or paging messages in the corresponding broadcast region.

Alternatively, the MTC terminal may perform monitoring on a common search space (CSS) of the M-PDCCH according to a scheduling method of SIBs, RARs, or paging messages. That is, when the resource allocation method through the M-PDCCH is applied in transmitting and receiving SIBs, RAR or paging messages, the MTC terminal may monitor the CSS of the M-PDCCH. The M-PDCCH in the present specification means a downlink control channel defined for the MTC terminal, and may include part or all of the PDCCH or EPDCCH. Alternatively, the M-PDCCH is used to encompass a downlink control channel defined for the MTC terminal and is not limited to the corresponding word.

Meanwhile, UE-specific DCI (UE-specific DCI) transmission through M-PDCCH CSS and UE-specific control message (UE-specific control message) through PDSCH may also be transmitted through the corresponding common area.

A UE-specific region is an area set for each MTC terminal, and resources may be allocated through a UE-specific higher layer message. That is, the UE-specific region is time-frequency resource allocation to the UE-specific region through UE-specific RRC signaling.

The MTC terminal may receive UE-specific control information for the corresponding terminal through the M-PDCCH transmitted through the configured terminal specific region. That is, the MTC terminal receives UE-specific Downlink Control Information (DCI), and receives downlink data traffic for the corresponding MTC terminal through the PDSCH. That is, the USS setting of the M-PDCCH for each MTC terminal is made through the corresponding terminal specific region, and the MTC terminal uses the M-PDCCH USS configured in the terminal specific region, and the C-RNTI based M- of the corresponding MTC terminal. PDCCH monitoring is performed.

Meanwhile, the common area and the terminal specific area of the present invention are to solve the narrow bandwidth problem of the MTC. Hereinafter, a specific method of setting the common area and the terminal specific area by the base station will be described.

Meanwhile, the common area and the terminal specific area described above may overlap in the time domain. In this case, the MTC terminal may be configured to receive monitoring and downlink information by giving priority to a common area. Alternatively, the time base resource allocation for the terminal specific region may not be separately signaled so that time base overlap does not occur, and the time base resource except for the common region may be set to the terminal specific region.

The time base resource for the common region or the terminal specific region may be set in units of subframes or radio frames. For example, configuration information on a subframe pattern or a radio frame pattern for a common region may be transmitted to MTC terminals in a corresponding cell through a PBCH newly defined for a PBCH or an MTC terminal. Alternatively, information on the SIBs transmission subframe or radio frame pattern is transmitted through the PBCH newly defined for the above-described PBCH or MTC terminal, and the RAR and paging message transmission is performed on the subframe pattern or radio frame pattern through the corresponding SIBs. Information may be transmitted.

In addition, when a time base resource for a UE specific region is signaled, a subframe pattern or a radio frame pattern for the UE specific region may be set through a corresponding RRC message. That is, the subframe or radio frame pattern information allocated to the common region and the terminal specific region for the MTC terminal to receive the downlink from the base station, that is, the downlink sub-valid from which the downlink reception from the base station is valid in any MTC terminal is valid. Frame or radio frame pattern information may be configured through cell-specific or UE-specific RRC signaling.

Meanwhile, frequency domain resources for a common region or a terminal specific region also need to be set.

For example, frequency axis resources for the common region and the terminal specific region may be allocated in units of 6 consecutive Physical Resource Blocks (PRBs).

For example, when an MTC terminal is supported in a cell, a system bandwidth constituting the cell is

System bandwidth is 0, 1,... ,

Total up to -1

MTC subbands may be divided into MTC subbands. That is, MTC subband 0 is composed of a total of six PRBs up to PRB index # 0 ~ 5, then MTC subband 1 is composed of PRB index # 6 ~ 11, PRB index ＃

To

Last MTC subband # consisting of 6 PRBs up to

Total up to -1

Can be divided into MTC subbands.

As another example, the last MTC subband # described above

The MTC subband may be configured using the remaining PRBs up to -1. In other words, system bandwidth

System bandwidth is 0, 1,... ,

Up to -1 can be divided into total MTC subbands. In this case, MTC subband 0 is composed of a total of six PRBs up to PRB index # 0 ~ 5, and then MTC subband 1 is composed of PRB index # 6 ~ 11, PRB index #

To

Total to the last MTC subband consisting of -1

It may be divided into MTC subbands.

Accordingly, the frequency axis resources of the common region and the terminal specific region may be allocated in units of the aforementioned MTC subbands. In this case, the MTC subband allocation for the common region may be transmitted to the MTC terminal in the cell through PBCH or SIB1. Alternatively, any fixed MTC subband may be allocated to the common area.

On the other hand, in the case of the MTC subband for the UE-specific region, each MTC terminal may be allocated through UE-specific RRC signaling.

8 is a diagram illustrating an operation of a base station according to another embodiment of the present invention.

In a method for transmitting a downlink signal by a base station according to another embodiment of the present invention, a common control information or common control information is established through a step of setting a common region and a terminal specific region for an MTC terminal and a common region. The method may include transmitting scheduling information about the UE and transmitting a UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region.

Referring to FIG. 8, the base station of the present invention may include setting a common region and a terminal specific region for the MTC terminal (S810). The base station may set a common area and a terminal specific area for the MTC terminal. The common area may be a cell specific area for MTC terminals in a cell, and the terminal specific area may be an area configured for each MTC terminal.

The newly defined common region may be configured to include a common search space of the downlink control channel, and the terminal specific region may be configured to include a terminal specific search space of the downlink control channel.

On the other hand, the setting information of the common area or the terminal specific area may be transmitted to the MTC terminal or may be predefined and stored. For example, time resource and frequency resource configuration information for the UE specific region may be transmitted through cell-specific or UE-specific higher layer signaling. Alternatively, time resource or frequency resource configuration information for the common region may be transmitted through PBCH or SIB.

On the other hand, the configuration information includes information related to time resources and frequency resources for the common region or the terminal specific region. For example, the time resource configuration information for the common region or the terminal specific region may include configuration information for the subframe pattern or the radio frame pattern. Alternatively, frequency resources for the common region or the terminal specific region may be allocated in units of six consecutive PRBs. Information on the allocated frequency resource may be included in the setting information and received.

In addition, the base station of the present invention may include transmitting common control information or scheduling information for common control information through a common region (S820). The base station may transmit system information, random access response information, or paging information through the aforementioned common area. Or, the base station may transmit the scheduling information for each of the system information, random access response information or paging information through the common area. The scheduling information may be transmitted through the common search space of the control channel.

In addition, the base station of the present invention may include transmitting UE-specific control information (UE-specific control information) through the terminal specific region (S830). The base station transmits terminal specific control information set for each MTC terminal through the terminal specific region. For example, the base station may transmit a terminal specific DCI. The MTC terminal may receive downlink data traffic through the PDSCH based on the received terminal specific DCI.

In addition, the base station of the present invention may perform all the steps necessary to perform the above-described embodiments of the present invention.

As described above, according to the present invention, there is an effect of allowing control information to be received using the LTE network even in a limited bandwidth of the MTC terminal. In addition, according to the present invention, it is possible to reduce the reception complexity and power consumption of the MTC terminal and to receive downlink control information normally.

Hereinafter, the configuration of the MTC terminal and the base station of the present invention will be briefly described again with reference to FIGS. 5 and 6.

Referring back to FIG. 5, the MTC terminal 500 receiving the downlink signal according to another embodiment of the present invention is common to the control unit 510 for monitoring a common area and a terminal specific area separately configured for the MTC terminal. Receive common control information or scheduling information for common control information through an area, and UE-specific control information or downlink data according to the UE-specific control information through a terminal specific area The receiver 530 may receive a channel PDSCH.

The transmitter 520 transmits uplink control information, data, and messages to the base station through the corresponding channel.

The receiver 530 may receive time resource or frequency resource configuration information for the common region through the PBCH. In addition, the receiver 530 receives downlink control information, data, and a message from a base station through a corresponding channel. The receiver 530 may receive time resource setting information for the common area or the terminal specific area including the setting information for the subframe pattern or the radio frame pattern. Configuration information on the subframe pattern or the radio frame pattern may be received through cell-specific or terminal-specific higher layer signaling. Alternatively, the configuration information on the subframe pattern or the radio frame pattern includes subframe set information and may be received through a system information block for the MTC terminal.

In addition, the controller 510 allocates a common area and a terminal specific area required to carry out the above-described present invention, and monitors the respective areas to control the overall operation of the MTC terminal 500 according to receiving a downlink signal. do.

In addition, the controller 510, the transmitter 520, and the receiver 530 may perform all the operations required to perform all the above-described embodiments of the present invention.

Referring back to FIG. 6, the base station 600 which transmits the downlink signal of the present invention includes common control information through a control unit 610 and a common area for setting a common area and a terminal specific area for an MTC terminal. Or a transmission unit 620 for transmitting scheduling information on common control information and transmitting UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region. ) May be included.

The transmitter 620 may further transmit time resource and frequency resource configuration information for the terminal specific region through higher layer signaling. In addition, the transmitter 620 may further transmit time resource or frequency resource configuration information for the common region through the PBCH. The transmitter 620 may transmit time resource configuration information for the common region or the terminal specific region including the configuration information for the subframe pattern or the radio frame pattern. For example, configuration information on a subframe pattern or a radio frame pattern may be transmitted through cell specific or terminal specific higher layer signaling. Alternatively, the configuration information on the subframe pattern or the radio frame pattern includes subframe set information and may be transmitted through a system information block for the MTC terminal.

In addition, the transmitter 620 and the receiver 630 are used to transmit and receive signals, messages, and data necessary for carrying out the above-described present invention with the MTC terminal.

The controller 610 sets a separate common area and a terminal specific area for the MTC terminal required to carry out the above-described present invention, and transmits downlink information to the MTC terminal through the respective areas. 600 to control the operation.

In addition, the controller 610, the transmitter 620, and the receiver 630 may perform all the operations required to perform all the above-described embodiments of the 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 APPLICATION

This patent application is filed with Korea Patent Application No. 10-2014-0128634 filed on September 25, 2014 and Korea Patent Application No. 10-2014-0128635 filed on September 25, 2014, and July 2015 119 (a) (35 USC §) of the United States Patent Act No. 10-2015-0105193 filed with Korea on September 24 and Patent Application No. 10-2015-0132362 filed with Korea on September 18, 2015 Priority is claimed under 119 (a)), the contents of which are hereby incorporated by reference in their entirety. 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 (20)

1. In the method of receiving a machine type communication (MTC) terminal downlink signal,

   Monitoring the common area and the terminal specific area configured for the MTC terminal;

   Receiving common control information or scheduling information on the common control information through the common area; And

   Receiving UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region.
2. The method of claim 1,

   The common area includes a common search space of a downlink control channel,

   The terminal specific region includes a terminal specific search space of a downlink control channel.
3. The method of claim 1,

   Time resource setting information for the common area or the terminal specific area,

   And setting information about the subframe pattern or the radio frame pattern.
4. The method of claim 3, wherein

   Setting information for the subframe pattern or radio frame pattern,

   Method assigned to the cell-specific or terminal-specific higher layer signaling.
5. The method of claim 3, wherein

   Setting information for the subframe pattern or radio frame pattern,

   And subframe set information and are allocated through a system information block for the MTC terminal.
6. The method of claim 1,

   Frequency resource for the common region or the terminal specific region,

   The method of claim 6, characterized in that allocated in units of six Physical Resource Block (PRB).
7. In the base station transmits a downlink signal,

   Setting a common area and a terminal specific area for a machine type communication (MTC) terminal;

   Transmitting common control information or scheduling information on the common control information through the common region; And

   Transmitting UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region.
8. The method of claim 7, wherein

   The common area includes a common search space of a downlink control channel,

   The terminal specific region includes a terminal specific search space of a downlink control channel.
9. The method of claim 7, wherein

   Time resource setting information for the common area or the terminal specific area,

   And setting information about the subframe pattern or the radio frame pattern.
10. The method of claim 9,

    Setting information for the subframe pattern or radio frame pattern,

    Method assigned to the cell-specific or terminal-specific higher layer signaling.
11. The method of claim 9,

    Setting information for the subframe pattern or radio frame pattern,

    And subframe set information and are allocated through a system information block for the MTC terminal.
12. The method of claim 7, wherein

    Frequency resource for the common region or the terminal specific region,

    The method of claim 6, characterized in that allocated in units of six Physical Resource Block (PRB).
13. In the Machine Type Communication (MTC) terminal receiving a downlink signal,

    A control unit for monitoring the common area and the terminal specific area configured for the MTC terminal; And

    Receive common control information or scheduling information for the common control information through the common region,

    And a receiver configured to receive UE-specific control information or a downlink data channel (PDSCH) according to the terminal-specific control information through the terminal-specific region.
14. The method of claim 13,

    The common area includes a common search space of a downlink control channel,

    And the terminal specific region includes a terminal specific search space of a downlink control channel.
15. The method of claim 13,

    The receiving unit,

    And receiving time resource setting information for the common area or the terminal specific area including the setting information for the subframe pattern or the radio frame pattern.
16. The method of claim 15,

    The receiving unit,

    And receiving configuration information on the subframe pattern or the radio frame pattern through cell-specific or terminal-specific higher layer signaling.
17. The method of claim 15,

    Setting information for the subframe pattern or radio frame pattern,

    And subframe set information, which is received through a system information block for the MTC terminal.
18. The method of claim 13,

    Frequency resource for the common region or the terminal specific region,

    The method of claim 6, characterized in that allocated in units of six Physical Resource Block (PRB).
19. In the base station for transmitting a downlink signal,

    A controller configured to set a common area and a terminal specific area for a machine type communication (MTC) terminal; And

    Transmitting common control information or scheduling information on the common control information through the common region,

    And a transmitter for transmitting UE-specific control information or a downlink data channel (PDSCH) according to the UE-specific control information through the UE-specific region.
20. The method of claim 19,

    The common area includes a common search space of a downlink control channel,

    And the terminal specific region includes a terminal specific search space of a downlink control channel.

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