KR101873064B1 - Method for generating random access signal of machine type communication device using narrow bandwidth - Google Patents

Abstract

A random access signal generation method and object communication device for a narrowband object communication device are disclosed. A method for generating a random access signal for an object communication device allocates a position in a frequency domain of a random access signal dedicated to a object communication device, that is, a frequency position at which a random access preamble is to be transmitted, The random access signal can be generated using a method of moving the center frequency of the object communication device to the random access frequency position allocated for the legacy LTE terminal.

Description

METHOD FOR GENERATING RANDOM ACCESS SIGNAL OF MACHINE TYPE COMMUNICATION DEVICE USING NARROW BANDWIDTH FIELD OF THE INVENTION [0001]

The present invention relates to a method for generating a random access signal, and more particularly to a method for generating a random access signal in a narrowband object communication device.

Machine-to-machine communication refers to the form of data communication associated with one or more entities that do not require human intervention.

Optimized services for object communication differ from services optimized for human-to-human communication: a) multiple market scenarios, b) data communications, c) lower costs and effort, d) Terminals, e) to a large extent, very little traffic per terminal.

Object communication can be represented by various services such as Smart Metering, Tracking & Tracing, Remote Maintenance & Control, and eHealth.

Recently, 3GPP has been working on MTC (Machine Type Communication) standardization for intelligent communication between people, objects, objects and objects. A large number of object communication devices are deployed and operated for various MTC applications that include smart metering and remote control.

In 3GPP (3rd Generation Partnership Project) LTE system, both the object communication device and the general user are treated as one UE and must be individually registered in the LTE network. Such arrangement of a plurality of object communication devices causes a scheduling competition for channel allocation, depletion of radio resources, overload due to signal generation, and the like, which adversely affects an existing general terminal. In 3GPP, standardization is being carried out with an emphasis on minimizing adverse effects caused by placement of object communication devices. In addition, efforts are being made to expand the object communication service through LTE by providing a low-cost object communication device.

In this connection, all LTE (Long Term Evolution) based user equipments are defined in the specification to support up to 20 MHz transmission / reception bandwidth. Therefore, a general LTE user terminal, which is a legacy terminal in terms of the object communication device, can access a base station (eNodeB) having a bandwidth of 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz or 20 MHz have. In general, the object communication device or terminal transmits a very small amount of information. Thus, supporting a bandwidth of up to 20 MHz, such as a general user terminal, can be a significant expense for a low cost communication device.

In order to solve this problem, it has been argued that the object communication device should operate with a narrow band. That is, even though the base station uses a wide bandwidth, the object communication device only supports narrow bandwidths such as 1.4 MHz and 5 MHz bandwidth. In order to enable this, a separate radio transmission standard operation supporting communication between a narrow-band communication device and a base station is required.

SUMMARY OF THE INVENTION An object of the present invention to overcome the above-described problems is to provide a method for generating a random access signal by a narrowband communication device in a 3GPP LTE based mobile communication system supporting a scalable system bandwidth of up to 20 MHz There is.

According to another aspect of the present invention, there is provided a method for generating a random access signal in a narrow band object communication device, the method comprising: A random access signal can be generated by allocating a frequency position at which a preamble is to be transmitted to a center position of a bandwidth of a base station system.

According to another aspect of the present invention, there is provided a method for generating a random access signal of a subject communication device, the method comprising: receiving a center frequency of a subject communication device at a random access frequency position allocated for a legacy LTE terminal, So that a random access signal can be generated.

In order to accomplish the object of the present invention, a method for generating a random access signal of a narrowband object communication device according to another embodiment of the present invention includes: a random access preamble format from an upper layer; A random access preamble format and information on a transmission time point, and information on a frequency resource block for a fixed random access signal according to a bandwidth of the object communication device, And generating a signal.

Here, the dedicated bandwidth of the object communication device may be set to, for example, 1.4 MHz.

According to another aspect of the present invention, there is provided a narrowband object communication device for receiving information on a random access preamble format and a transmission time from an upper layer, and transmitting the received random access preamble format and transmission A random access signal can be generated using frequency resource block related information for a fixed random access signal according to information on a time point and a bandwidth of the object communication device.

Using the random access signal generation method as described above, it is possible to generate a random access signal capable of mutually communicating smoothly with a narrow band communication device and a 3GPP LTE based mobile communication system supporting a scalable system bandwidth of up to 20 MHz Do.

Further, according to the present invention, when the object communication device has a dedicated bandwidth of 1.4 MHz, the method of generating a random access signal can be simplified.

In addition, it is possible not only to change the current wireless transmission standard to a wireless transmission standard optimized for MTC but also to eliminate unnecessary upper layer parameters and reduce the total number of higher layer parameters.

1 is a conceptual diagram of a wireless communication network providing an MTC service to which the present invention is applied.
2 is a message flow diagram between a terminal and a base station in a random access procedure of a terminal in a 3GPP LTE system.
3 is a conceptual diagram of an embodiment of a random access signal generating method according to the first method of the present invention.
4 is a conceptual diagram of another embodiment of a random access signal generating method according to the first method of the present invention.
5 is a conceptual diagram of an embodiment of a random access signal generating method according to a second method of the present invention.
6 is a conceptual diagram of another embodiment of the random access signal generating method according to the second method of the present invention.
7 is a flowchart of a random access operation in the object communication device (MTC terminal) according to the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail.

It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the terms "comprises" or "having" and the like are used to specify that there is a feature, a number, a step, an operation, an element, a component or a combination thereof described in the specification, But do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the relevant art and are to be interpreted in an ideal or overly formal sense unless explicitly defined in the present application Do not.

A "terminal" used in the present application includes a mobile station (MS), a user equipment (UE), a user terminal (UT), a wireless terminal, an access terminal (AT), a terminal, a subscriber unit, A subscriber station (SS), a wireless device, a wireless communication device, a wireless transmit / receive unit (WTRU), a mobile node, a mobile, or other terminology. Various embodiments of the terminal may be used in various applications such as cellular telephones, smart phones with wireless communication capabilities, personal digital assistants (PDAs) with wireless communication capabilities, wireless modems, portable computers with wireless communication capabilities, Devices, gaming devices with wireless communication capabilities, music storage and playback appliances with wireless communication capabilities, Internet appliances capable of wireless Internet access and browsing, as well as portable units or terminals incorporating combinations of such functions However, the present invention is not limited thereto.

A base station, a Node-B, an eNode-B, a base transceiver system (BTS), and a base station (BS) , An access point, and the like.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate the understanding of the present invention, the same reference numerals are used for the same constituent elements in the drawings and redundant explanations for the same constituent elements are omitted.

1 is a conceptual diagram of a wireless communication network providing an MTC service to which the present invention is applied.

1, the wireless communication network providing the MTC service further includes an MTC server 300, a device communication device 110, and an MTC user 400 for providing an MTC service in addition to an existing wireless communication network do.

The object communication device 110 is a terminal having an MTC communication function for communicating with the MTC server 300 and other object communication devices via a PLMN (Public Land Mobile Network).

The MTC server 300 communicates with the PLMN and communicates with the object communication device 110 via the PLMN. The MTC server 300 also has an interface accessible by the MTC user and provides services for the MTC user 400. [ The MTC user (400) uses the service provided by the MTC server (300).

1, the MTC server 300 is controlled by a network operator, the network operator provides an API (Application Programming Interface) on the MTC server, and the MTC user 400 accesses the MTC server of the network operator through the API .

1, the MTC server is included in the network operator domain, but the MTC server may not be located in the network operator domain but may be located outside the network operator domain. In this case, the MTC server is not controlled by the network operator It does not take shape.

In addition, the object communication device 110 is connected to a base station (not shown) to communicate with the MTC server 300 or the like located in the network.

2 is a message flow diagram between a terminal and a base station in a random access procedure of a terminal in a 3GPP LTE system.

The random access procedure is a process for accessing the network of the UE, and is performed in the case of initial access, handover, scheduling request, uplink time synchronization acquisition, and the like. That is, all terminals perform random access for initial connection and data transmission.

The random access procedure shown in FIG. 2 refers to a random access signal generation procedure in 3GPP TS 36.211 among 3GPP LTE based wireless transmission standards.

When a UE selects a random access preamble, the UE determines a group to be selected using information received through the system information, and randomly assigns a value to the base station. That is, in order for the UE to perform the random access procedure, a procedure (S201) for receiving system information from the base station is required.

Here, with respect to the system information including the information on the random access preamble selection, in the 3GPP LTE system, general information on the common channel related information and the system is included in the system information in the base station, channel.

Three types of RRC messages are used to convey system information: MIB messages, SIB1 messages, and SI (System Information) messages.

System information is organized in the form of a system information block (SIB), and each system information block contains a series of functionally related parameters. Here, the system information block may include a MIB (Master Information Block) including a limited number of parameters most frequently transmitted as parameters essential for initial connection to the network of the terminal, a MIB System information block type 1 (SIB1) including information related to time-domain scheduling of other SIBs, system information block type 2 (SIB2) including common and shared channel information, and the like .

After receiving the system information, the UE sets up a channel, analyzes the information on the random access channel to perform initial random access, and selects one of the random access preambles available to start the random access procedure.

Specifically, the UE transmits a preamble format (Preamble format) for transmitting a random access signal from a parameter ( prach - ConfigurationIndex ) related to a physical random access channel (PRACH) configuration index among system information received from the base station, Information is acquired (S203).

) 및 시퀀스 부분의 길이(

)가 정의된다. 또한, 각 PRACH 구성 인덱스에 대해서는 프레임 구조별로 프리엠블 포멧, 10ms 단위에서의 밀도, 버전 등이 정의된다. Here, the preamble format has five types of formats ranging from 0 to 4, and each format is controlled by an upper layer according to a frame structure and a random access structure. For each format, the cyclic prefix length (

) And the length of the sequence portion (

) Is defined. For each PRACH configuration index, a preamble format for each frame structure, a density in units of 10 ms, and a version are defined.

Meanwhile, the UE acquires PRB (Physical Resource Block) number information in the frequency domain for transmitting the random access signal from the parameter ( prach - FrequencyOffset ) related to the PRACH frequency offset in the system information received from the base station (S205).

The terminal generates a random access preamble using a preamble format for transmitting the acquired information, that is, a preamble format for transmitting a random access signal, information on a transmission time point, and a PRB number in a frequency domain for transmitting a random access preamble signal. And generates an emblem signal (S207).

After that, the terminal 100 randomly selects the generated random access preamble and transmits the selected preamble to the base station 200 (S209).

The base station 200 receives the preamble transmitted by the terminal 100 and transmits a random access response message to the terminal (S211). If the UE has successfully received the random access response message for the preamble transmitted by the UE, the UE performs scheduled uplink transmission using the uplink radio resource allocated from the base station to establish an RRC (Radio Resource Control) connection (S213).

In the 3GPP LTE based wireless transmission standard, a base station allocates a frequency resource of 1.08 MHz corresponding to six PRBs (Physical Resource Blocks) for receiving a random access signal, May be assigned to any frequency resource in the entire frequency domain of the base station (eNB) system bandwidth.

Thus, in the case where the transmission bandwidth of the object communication device is smaller than the reception system bandwidth of the base station, for example, when the bandwidth of the base station system is 20 MHz and the transmission bandwidth of the object communication device is 1.4 MHz, The location of the resource can be allocated outside the frequency domain used by the object communication device. As a result, there is a problem that the object communication device can not generate or transmit the random access signal with the current standard.

Therefore, the present invention proposes a method for generating a random access signal in a 3GPP LTE-based mobile communication system supporting a scalable system bandwidth of up to 20 MHz, wherein a device communication device having a narrower bandwidth than a bandwidth supported by the system.

In addition, when the object communication device has a narrow bandwidth, for example, a dedicated bandwidth of 1.4 MHz, a random access signal generation method for the object communication device is optimized by optimizing the random access signal generation method specified in the 3GPP LTE- .

According to 3GPP LTE-based specifications, transmission bandwidths of 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz and 20 MHz can be used. Also, the number of PRBs used for each transmission bandwidth is defined as 6 PRBs, 15 PRBs, 25 PRBs, 50 PRBs, 75 PRBs, and 100 PRBs, respectively.

Also, in the 3GPP LTE based wireless transmission standard, a random access signal is defined to occupy six PRBs corresponding to a 1.4 MHz bandwidth (the frequency resource actually used is 1.08 MHz, and both have guard bands).

Based on this understanding of the 3GPP LTE based mobile communication system, a method for generating a random access signal for a device communication device using a narrow band according to the present invention can be roughly classified into two methods can do.

According to the method of generating a random access signal according to the first method of the present invention, a position in a frequency domain of a random access signal dedicated to a subject communication device, that is, a frequency position at which a random access preamble is to be transmitted, do.

A method of generating a random access signal according to a second method of the present invention is a method of moving a center frequency of a subject communication device to a random access frequency position allocated for a legacy LTE terminal by a base station.

Hereinafter, each embodiment will be described in detail with reference to FIG. 3 to FIG.

3 is a conceptual diagram of an embodiment of a random access signal generating method according to the first method of the present invention.

3 is a conceptual diagram of an embodiment of allocating a random access frequency resource 2100 dedicated to a subject communication device to a center frequency position 201 of a base station (eNB) system bandwidth 2000. [

In FIG. 3, both of the case where the object communication device (MTC terminal) has the bandwidth of 5 MHz (1100-1) and the case of the bandwidth of 1.4 MHz (1100-2) are all considered. In both cases, as shown in FIG. 3, the center frequency 201 of the base station system bandwidth and the center frequency 101 of the object communication device are matched. At this time, in addition to the random access resource allocation such as the frequency location and the transmission time point for the legacy LTE terminal in the cell, random access resource allocation dedicated to the object communication device may be required.

Here, the resources 2100 and the random access signal 1110 allocated for preamble reception all occupy resources corresponding to 6 PRBs (1.08 MHz).

4 is a conceptual diagram of another embodiment of a random access signal generating method according to the first method of the present invention.

Fig. 4 is based on the assumption that the transmission bandwidth of the object communication device (MTC terminal) is 5 MHz. 4, according to one embodiment of the present invention, the center frequency 201 of the base station system bandwidth and the center frequency 101 of the object communication device are matched to the random access frequency resources 1110 Is assigned to the position of another frequency resource which is not in the center but within the range of the object communication device transmission bandwidth.

5 is a conceptual diagram of an embodiment of a random access signal generating method according to a second method of the present invention.

5 is a block diagram of an embodiment in which the object communication device moves the center frequency 101 of the object communication device bandwidth from the base station to the location of the random access frequency resource 2100 allocated for the legacy LTE terminal.

In this case, the object communication device can also use a random access resource such as a frequency position and a transmission time allocated for the legacy LTE terminal in the cell. However, this embodiment does not exclude the allocation of the random access resource dedicated for the object communication device.

As in FIG. 5, the object communication device moves its center frequency 101 to the center of the random access frequency location 2100 for the legacy LTE terminal allocated within the base station system bandwidth.

6 is a conceptual diagram of another embodiment of the random access signal generating method according to the second method of the present invention.

Fig. 6 is a graph showing, on an extension of the embodiment shown in Fig. 5, the frequency band of the object communication device 2100 so that the random access frequency resource 2100 for the legacy LTE terminal is contained within the entire frequency band 1100-1 for the object communication device. 1110 < / RTI >

Although the object communication device in various embodiments of the method of generating a random access signal according to the present invention through FIGS. 3 to 6 has been described as using a narrow band such as 1.4 MHz, 5 MHz bandwidth, the present invention is not limited thereto It would also be possible for the object communication device to use a bandwidth other than the 1.4 MHz, 5 MHz bandwidth.

In addition, when the transmission bandwidth of the object communication device is equal to or wider than the reception system bandwidth of the base station, the object communication device uses a random access resource such as a frequency position and a transmission time point for the legacy LTE terminal in the cell as with the legacy LTE terminal Method, or a method for allocating random access resources dedicated for object communication devices separately from the random access resource allocation for legacy LTE terminals is also included in the scope of the present invention.

In the following, the method of generating the random access signal specified in the conventional 3GPP LTE based wireless transmission standard is optimized for the object communication device using the dedicated bandwidth of 1.4 MHz, when the object communication device has the dedicated bandwidth of 1.4 MHz, A random access signal generating method proposed by the present invention will be described.

The UE generates a PRB (Physical Resource Block) in the frequency domain for transmitting a random access signal from a parameter ( prach- FrequencyOffset ) related to the PRACH frequency offset in the system information received from the base station, ) Number information of the user.

However, since the narrowband object communication device considered in the present invention supports a constant fixed bandwidth, for example, a bandwidth of 1.4 MHz, the PRB number information can be regarded as defined. That is, in the present invention, a random access signal is generated using a fixed parameter value for a PRB number in the frequency domain without receiving a parameter related to the PRACH frequency offset.

Further, in the present invention, a formula used for generating a random access signal in the 3GPP LTE-based wireless transmission standard is optimized by a formula for supporting the object communication device.

7 shows a flowchart of a random access operation in the object communication device according to the present invention.

The UE acquires a preamble format for transmitting a random access signal from an upper layer and transmission time information through reception of a parameter ( prach - ConfigurationIndex ) related to a PRACH configuration index (S701).

In step S703, the object communication device generates a random access signal using the PRB number-related fixed parameter value in the frequency domain, the preamble format for transmitting the random access signal acquired through the upper layer, and the transmission time information.

Hereinafter, a description will be given of a portion where the specification change is required by using the method proposed by the present invention, in comparison with the conventional method specified in the specification for generating a random access signal.

First, the equation for generating the random access signal defined by the conventional standard is expressed by Equation 1 below.

는 진폭(amplitude) 스케일링 팩터,

는 자도프-추 시퀀스(Zadoff-Chu sequence)의 길이를 나타낸다. 또한,

이다.

는 랜덤 액세스 프리엠블 및 업링크 데이터 전송 간의 간격 차이를 고려한 팩터이다. 또한,

는 서브캐리어 스페이싱을 나타내고, 변수

는 랜덤 액세스 프리엠블에 대한 서브캐리어 스페이싱 (spacing)을 나타내는 값으로 프리엠블 포멧에 따라 정해진 값을 갖는다. 변수

은 PRB 내에서 랜덤 액세스 프리엠블의 주파수-도메인 위치를 결정하는 오프셋 값으로, 프리엠블 포멧에 따라 정해진 값을 갖는다. Here, s (t) is a random access signal,

Is an amplitude scaling factor,

Represents the length of the Zadoff-Chu sequence. Also,

to be.

Is a factor taking account of the gap between the random access preamble and the uplink data transmission. Also,

Indicates subcarrier spacing, and variable

Is a value indicating a subcarrier spacing for a random access preamble, and has a predetermined value according to a preamble format. variable

Is an offset value for determining the frequency-domain position of the random access preamble in the PRB, and has a value determined according to the preamble format.

는 PRACH 자원에 의해 점유되는 첫번째 PRB를 나타내며, 상위 계층으로부터 PRACH 오프셋에 관한 파라미터(prach - FrequencyOffset)의 수신을 통해 얻을 수 있다. here,

Represents the first PRB occupied by the PRACH resource and can be obtained by receiving a parameter ( prach - FrequencyOffset ) on the PRACH offset from the upper layer.

Next, a method of generating a random access signal according to the present invention supporting a device communication device using a dedicated bandwidth of 1.4 MHz will be described in comparison with Equation (1).

은 상위계층으로부터 별도의 수신 없이 자체적으로 고정 파라미터 값을 갖는다 (예를 들어,

=0). 수학식 1에서

는 고정된 값

으로 변경된다. (예를 들어,

=6).parameter

Has its own fixed parameter value without further reception from the upper layer (e.g.,

= 0). In Equation (1)

Is a fixed value

. (E.g,

= 6).

Accordingly, the random access signal generating method according to the present invention can be summarized as Equation (2) below.

는 진폭(amplitude) 스케일링 팩터,

는 자도프-추 시퀀스(Zadoff-Chu sequence)의 길이를 나타낸다.

는 랜덤 액세스 프리엠블 및 업링크 데이터 전송 간의 간격 차이를 고려한 팩터이다. 또한,

는 서브캐리어 스페이싱을 나타내고, 변수

는 랜덤 액세스 프리엠블에 대한 서브캐리어 스페이싱 (spacing)을 나타내는 값으로 프리엠블 포멧에 따라 정해진 값을 갖는다. 변수

은 PRB 내에서 랜덤 액세스 프리엠블의 주파수-도메인 위치를 결정하는 오프셋 값으로, 프리엠블 포멧에 따라 정해진 값을 갖는다. Here, s (t) is a random access signal,

Is an amplitude scaling factor,

Represents the length of the Zadoff-Chu sequence.

Is a factor taking account of the gap between the random access preamble and the uplink data transmission. Also,

Indicates subcarrier spacing, and variable

Is a value indicating a subcarrier spacing for a random access preamble, and has a predetermined value according to a preamble format. variable

Is an offset value for determining the frequency-domain position of the random access preamble in the PRB, and has a value determined according to the preamble format.

이며,

는 PRACH 자원에 의해 점유되는 첫번째 PRB를 나타내며, 고정 파라미터 값인

에 의해 결정된다. Also,

Lt;

Denotes the first PRB occupied by the PRACH resource,

.

값을 구하는 방법으로 다음과 같이 3 가지 바람직한 실시예를 제안한다. Here, in the present invention,

As a method of obtaining the value, three preferred embodiments are proposed as follows.

First, the first PRB occupied by the PRACH resource for the frame structure type 1 (corresponding to the Frame Structure Type 1, FDD) can be defined as Equation 3 below.

이 고정 값 '0'을 가진다고 할 때, k ₀의 값은 -36이 된다.

here,

Has a fixed value of '0', the value of k ₀ becomes -36.

Second, the first PRB occupied by the PRACH resource for the preamble format 0 to 3 among the frame structure type 2 (corresponding to the frame structure type 2, TDD) can be defined as Equation (4) below.

은 상위계층으로부터 받은 값이 아닌 고정 파라미터 값이다.here,

Is a fixed parameter value rather than a value received from an upper layer.

Third, the first PRB occupied by the PRACH resource for the preamble format 4 among the frame structure type 2 (corresponding to the Frame Structure Type 2, TDD) can be defined as Equation (5) below.

The object communication device generates a random access preamble using the information on the first PRB occupied by the PRACH resource determined according to one of Equations 3 to 5 (S703).

Returning to the flowchart of FIG. 7, the object communication device transmits the generated random access preamble to the base station (S705). The object communication device waits to receive the random access response from the base station (S707), and performs the scheduled uplink transmission (S709).

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined in the appended claims. It will be possible.

100: user terminal
110: MTC terminal (or object communication device)
300: MTC server

Claims (15)

delete A method of generating a random access signal of a machine type communication device,
Receiving system information transmitted from a base station;
Extracting random access related information including information on a preamble format and a transmission time from the received system information; And
And generating a random access signal using the extracted random access related information and frequency resource block related information for a predetermined random access signal. A method of generating a random access signal of a machine type communication device,
Receiving system information transmitted from a base station;
Extracting random access related information from the received system information; And
Generating a random access signal using frequency resource block related information that is a first physical resource block occupied by a physical random access channel resource for the extracted random access related information and a predetermined random access signal; / RTI > A method of generating a random access signal of a machine type communication device,
Receiving system information transmitted from a base station;
Extracting random access related information from the received system information; And
Generating a random access signal using frequency resource block related information that is a first physical resource block occupied by a physical random access channel resource for the extracted random access related information and a predetermined random access signal; , ≪ / RTI &
Wherein a location of a first physical resource block occupied by the physical random access channel resource is set to a fixed value according to a bandwidth allocated to the narrowband communication device. A method for generating a random access signal in a machine type communication device using a band located within a system bandwidth used in a base station,
Receiving system information transmitted from a base station;
Extracting random access related information from the received system information; And
And generating a random access signal using the extracted random access related information and frequency resource block related information for a predetermined random access signal. A method for generating a random access signal in a machine type communication device using a center located within a system bandwidth used in a base station,
Receiving system information transmitted from the base station;
Extracting random access related information from the received system information; And
And generating a random access signal using the extracted random access related information and frequency resource block related information for a predetermined random access signal. A method of generating a random access signal of a machine type communication device,
Receiving system information transmitted from a base station;
Extracting random access related information from the received system information;
Generating a random access signal using the extracted random access related information and frequency resource block related information for a predetermined random access signal;
Obtaining bandwidth information allocated to a random access signal for a general user equipment in the base station; And
When the band allocated for the random access signal for the general user terminal is located outside the band of the narrowband object communication device, the bandwidth allocated for the random access signal for the general user terminal is the bandwidth of the narrowband object communication device And shifting the center of the narrowband communication device band in an assigned band direction relative to the random access signal for the general user terminal. delete 1. A matter communication device for performing machine type communication,
A transmission / reception unit for receiving system information transmitted from a base station; And
Extracts random access related information including information on a preamble format and a transmission time from the received system information, and extracts frequency resource block related information for the extracted random access related information and a predetermined random access signal And a controller for generating a random access signal using the narrowband object communication device. 1. A matter communication device for performing machine type communication,
A transmission / reception unit for receiving system information transmitted from a base station; And
A first random number generator configured to extract random access related information from the received system information and to generate first random number information related to the random access information and the first physical information occupied by a physical random access channel resource for a predetermined random access signal, And generates a random access signal using frequency resource block related information that is a resource block. 1. A matter communication device for performing machine type communication,
A transmission / reception unit for receiving system information transmitted from a base station; And
A first random number generator configured to extract random access related information from the received system information and to generate first random number information related to the random access information and the first physical information occupied by a physical random access channel resource for a predetermined random access signal, And a controller for generating a random access signal using frequency resource block related information that is a resource block,
Wherein a location of a first physical resource block occupied by the physical random access channel resource is set to a fixed value according to a bandwidth allocated to the narrowband object communication device. 1. A matter communication device for performing machine type communication using a band located within a system bandwidth used by a base station,
A transmission / reception unit for receiving system information transmitted from the base station; And
And a control unit for extracting random access related information from the received system information and generating a random access signal using the extracted random access related information and frequency resource block related information for a predetermined random access signal Narrowband object communication device. 1. A matter communication device for performing machine type communication using a centrally located band within a system bandwidth used by a base station,
A transmission / reception unit for receiving system information transmitted from the base station; And
And a control unit for extracting random access related information from the received system information and generating a random access signal using the extracted random access related information and frequency resource block related information for a predetermined random access signal Narrowband object communication device. 1. A matter communication device for performing machine type communication,
A transmission / reception unit for receiving system information transmitted from a base station; And
Extracts random access related information from the received system information, generates a random access signal by using the extracted random access related information and frequency resource block related information for a predetermined random access signal, When the band allocated for the random access signal for the general user terminal is located outside the band of the narrowband object communication device, The center of the narrow band communication device band is allocated in the band direction allocated to the general user terminal random access signal so that the band allocated for the random access signal for the general user terminal is included in the band of the narrow band object communication device A narrow-band object container New devices. 1. A matter communication device for performing machine type communication,
A transmission / reception unit for receiving system information transmitted from a base station;
A control unit for extracting random access related information from the received system information and generating a random access signal using the extracted random access related information and frequency resource block related information for a predetermined random access signal; And
A storage unit for storing bandwidth related information of the narrowband object communication device, information on a random access preamble format and transmission time, and information on a fixed value for a first physical resource block occupied by a physical random access channel resource, Narrowband object communication device.

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