KR102090773B1 - Method for transmitting and receiving PUSCH for MTC UEs based on sub-PRB and Apparatus thereof - Google Patents

Abstract

This embodiment relates to a method of transmitting and receiving an uplink data channel (PUSCH, Physical Uplink Shared Channel) for a Machine Type Communication (MTC) terminal in a 3GPP LTE / LTE-A system, and in one embodiment, the MTC terminal performs uplink data A method of transmitting a channel (PUSCH), the step of receiving uplink data channel resource allocation information in a partial physical resource block (sub-PRB) unit from a base station and an uplink data channel based on the uplink data channel resource allocation information It provides a method comprising the step of transmitting to the base station.

Description

A method and apparatus for transmitting / receiving a partial physical resource block based uplink data channel for an MTC terminal and a device therefor {Method for transmitting and receiving PUSCH for MTC UEs based on sub-PRB and Apparatus thereof}

This embodiment proposes a transmission and reception method of an uplink data channel (PUSCH, Physical Uplink Shared Channel) for a Machine Type Communication (MTC) terminal in a 3GPP LTE / LTE-A system, and allocates resources for the uplink data channel for this A method and a method of constructing DCI (Downlink Control Information) are proposed. In particular, in order to improve spectral efficiency, a method for PUSCH resource allocation in a sub-PRB unit is proposed.

As the LTE network spreads, mobile operators want to minimize the number of Radio Access Terminals (RATs) to reduce network maintenance costs. However, conventional GSM / GPRS network-based MTC products are increasing, and the GSM / GPRS network has an advantage of being able to provide an MTC using a low data rate at a low cost.

Therefore, from the mobile operator's point of view, LTE networks are used for general data transmission and GSM / GPRS networks are used for MTC, so two RATs must be operated respectively, which is caused by inefficient utilization of frequency bands. There is a problem that is a burden to the operator.

Therefore, in order to lower the unit cost of the terminal compared to the existing normal LTE terminal, the bandwidth of the terminal is limited to 6 PRBs (Physical Resource Blocks), and the bandwidth reduction / low complexity (BL, Bandwidth) is limited to the number of antennas to 1 reduced Low complexity) Considering MTC application scenarios such as smart metering installed in deep indoor environments such as UEs and basements, CE UEs with coverage enhancement (CE) mode In the definition, a technology for supporting a corresponding BL / CE terminal, that is, an MTC terminal has been defined in LTE.

At this time, if the method used by the existing LTE terminal is used as it is for the uplink data channel of the MTC terminal, an uplink data channel having an excessively large bandwidth compared to the transmission / reception bandwidth available to the terminal is allocated to the uplink. There is a problem that the spectral efficiency is lowered.

The purpose of the present embodiments is to provide a specific method for transmitting and receiving an uplink data channel that can improve spectral efficiency for the uplink of the MTC terminal.

In one embodiment, the MTC terminal transmits an uplink data channel (PUSCH) in order to solve the above-described problem, in which a base station transmits uplink data channel resource allocation information in a unit of a partial physical resource block (sub-PRB). It provides a method comprising the step of receiving from and transmitting the uplink data channel to the base station based on the uplink data channel resource allocation information.

Further, according to an embodiment of the present invention, in a method in which a base station receives an uplink data channel (PUSCH), the step of transmitting uplink data channel resource allocation information in a sub-PRB unit to an MTC terminal and uplink It provides a method comprising the step of receiving an uplink data channel configured on the basis of the data channel resource allocation information from the MTC terminal.

Further, according to an embodiment of the present invention, in an MTC terminal transmitting an uplink data channel (PUSCH), a receiving unit and an uplink data channel receiving uplink data channel resource allocation information in a partial physical resource block (sub-PRB) unit from a base station. It provides an MTC terminal comprising a transmitter for transmitting an uplink data channel to the base station based on the resource allocation information.

Further, according to an embodiment of the present invention, in a method for a base station to receive an uplink data channel (PUSCH), a transmitter and an uplink that transmit uplink data channel resource allocation information in a sub-PRB unit to an MTC terminal. It provides a base station characterized in that it comprises a receiver for receiving an uplink data channel configured on the basis of the data channel resource allocation information from the MTC terminal.

According to the present embodiments, a specific method for transmitting and receiving an uplink data channel that can improve spectral efficiency for the uplink of the MTC terminal can be provided.

1 is a diagram showing a procedure for a terminal to transmit an uplink data channel in this embodiment.
2 is a diagram showing a procedure for a base station to receive an uplink data channel in this embodiment.
3 is a diagram illustrating an example of transmitting uplink data channel resource allocation information to a terminal through RRC signaling in this embodiment.
FIG. 4 is a diagram illustrating an example of transmitting uplink data channel resource allocation information to a terminal through DCI in this embodiment.
5 is a diagram showing the configuration of a base station according to the present embodiments.
6 is a diagram showing the configuration of a terminal according to the present embodiments.

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. It should be noted that in adding reference numerals to the components of each drawing, the same components have the same reference numerals as possible even though they are displayed on different drawings. In addition, in describing the present invention, when it is determined that detailed descriptions of related well-known configurations or functions may obscure the subject matter of the present invention, detailed descriptions thereof will be omitted.

In this specification, the MTC terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement. In this specification, the MTC terminal may mean a terminal that supports low cost (or low complexity) and coverage enhancement. Or, in this specification, the MTC terminal may mean a terminal defined as a specific category for supporting low cost (or low complexity) and / or coverage enhancement.

In other words, in this specification, the MTC terminal may mean a newly defined 3GPP Release-13 low cost (or low complexity) UE category / type that performs LTE-based MTC-related operations. Or, in this specification, the MTC terminal supports improved coverage compared to the existing LTE coverage, or UE category / type defined under the existing 3GPP Release-12 or lower supporting low power consumption, or the newly defined Release-13 low cost (or low complexity) UE category / type.

The wireless communication system in the present invention is widely deployed to provide various communication services such as voice and packet data. The wireless communication system includes a user equipment (User Equipment, UE) and a base station (Base Station, BS, or eNB). The user terminal in the present specification is a comprehensive concept meaning a terminal in wireless communication, as well as UE (User Equipment) in WCDMA and LTE, HSPA, MS (Mobile Station) in GSM, UT (User Terminal), SS It should be interpreted as a concept including (Subscriber Station) and wireless devices.

Base station or cell (cell) generally refers to a station (station) to communicate with the user terminal, Node-B (Node-B), eNB (evolved Node-B), sector (Sector), site (Site), BTS ( Base Transceiver System), an access point (Access Point), a relay node (Relay Node), RRH (Remote Radio Head), RU (Radio Unit), can be called in other terms such as small cells.

That is, in this specification, the base station or cell (cell) is interpreted in a comprehensive sense indicating some areas or functions covered by a base station controller (BSC) in CDMA, a NodeB in WCDMA, an eNB or sector (site) in LTE, and the like. This means that it covers all of the various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, and small cell communication range.

Since the various cells listed above have a base station that controls each cell, the base station can be interpreted in two ways. It may be i) a device providing a megacell, a macrocell, a microcell, a picocell, a femtocell, or a small cell in relation to the radio area, or ii) may indicate the radio area itself. In i), all devices that provide a predetermined wireless area are controlled by the same entity or interact to configure the wireless area in a collaborative manner. ENB, RRH, antenna, RU, LPN, point, transmit / receive point, transmit point, receive point, etc., according to the configuration method of the radio area, are an embodiment of the base station. In ii), the radio area itself, which receives or transmits a signal from the viewpoint of the user terminal or the neighboring base station, may indicate to the base station itself.

Accordingly, megacell, macrocell, microcell, picocell, femtocell, small cell, RRH, antenna, RU, low power node (LPN), point, eNB, transmit / receive point, transmit point, receive point are collectively referred to as base stations. do.

In this specification, the user terminal and the base station are two transmitting and receiving subjects used to implement the technology or technical idea described herein, and are used in a comprehensive sense and are not limited by terms or words specifically referred to. The user terminal and the base station are two (Uplink or Downlink) transmission / reception subjects used to implement the technology or technical idea described in the present invention and are used in a comprehensive sense and are not limited by terms or words specifically referred to. Here, the uplink (Uplink, UL, or uplink) means a method of transmitting and receiving data to the base station by the user terminal, the downlink (Downlink, DL, or downlink) transmits and receives data to the user terminal by the base station Means the way.

There are no restrictions on the multiple access technique 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. An embodiment of the present invention can be applied to resource allocation such as asynchronous wireless communication evolving to LTE and LTE-advanced via GSM, WCDMA, HSPA, and synchronous wireless communication evolving to CDMA, CDMA-2000 and UMB. The present invention should not be interpreted as being limited or limited to a specific wireless communication field, but should be interpreted as including all technical fields to which the spirit of the present invention can be applied.

For uplink transmission and downlink transmission, a time division duplex (TDD) scheme transmitted using different times may be used, or a frequency division duplex (FDD) scheme transmitted using different frequencies may be used.

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 downlink include PDCCH (Physical Downlink Control CHannel), PCFICH (Physical Control Format Indicator CHannel), PHICH (Physical Hybrid ARQ Indicator CHannel), PUCCH (Physical Uplink Control CHannel), EPDCCH (Enhanced Physical Downlink Control CHannel), etc. Control information is transmitted through the same control channel, and is composed of data channels such as a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH) to transmit data.

Meanwhile, control information may be transmitted using an enhanced PDCCH (EPDCCH) or an extended PDCCH.

In this specification, a cell is a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission / reception point, or a transmission / reception point itself. You can.

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

The multiple transmission / reception points include at least one of a base station or a macro cell (hereinafter referred to as 'eNB') and a high transmission power, which is wired and controlled by an optical cable or an optical fiber to the eNB, or a low transmission power in the macro cell area. It may be RRH.

Hereinafter, 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 a multiple transmission / reception point. In the downlink, the transmitter may be a part of multiple transmission / reception points, and the receiver may be a part of the terminal. In the uplink, a transmitter may be a part of a terminal, and a receiver may be a part of multiple transmission / reception points.

Hereinafter, a situation in which signals are transmitted / received through channels such as PUCCH, PUSCH, PDCCH, EPDCCH, and PDSCH is also expressed in the form of “transmit and receive PUCCH, PUSCH, PDCCH, EPDCCH and PDSCH”.

In addition, hereinafter, description of transmitting or receiving a PDCCH or transmitting or receiving a signal through the PDCCH may be used in a sense 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 are also used to include both PDCCH and EPDCCH.

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

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

The eNB performs downlink transmission to terminals. The eNB is a downlink control information such as a physical downlink shared channel (PDSCH), which is a main physical channel for unicast transmission, and scheduling required for receiving the PDSCH, and an uplink data channel (for example, 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 as a form in which the corresponding channel is transmitted and received.

[CE mode definition]

In LTE, two modes, CEModeA and CEModeB, have been defined as coverage enhancement modes for BL / CE terminals. CEModeA is a terminal operation mode for applying repetition transmission for a radio channel such as MPDCCH, PDSCH, PUSCH, PUCCH for improving coverage of a BL / CE terminal or applying a small number of repetition transmissions. , CEModeB is a terminal operation mode for applying a large number of repetitions to the radio channels to improve coverage. The CE mode is defined to be signaling so that it can be set for each terminal.

[ Narrowband  definition ]

개의 하향 링크 협대역(narrowbands) 및

개의 상향 링크 협대역(narrowbands)이 구성되었다. 단, 임의의 시스템 대역폭에서 상기의 협대역(narrowband) 구성 시, 해당 시스템 대역폭을 구성하는 전체 PRB의 수를 6으로 나눈 나머지에 해당하는 remaining RB(s)에 대해, 해당 remaining RB(s)를 시스템 대역의 양쪽 밴드의 가장자리(edge)에 균등(even)하게 두거나(시스템 대역폭이 짝수의 PRBs로 구성된 경우), 또는 시스템 대역의 센터(시스템 대역이 25 PRBs로 구성된 경우), 또는 양 edge와 시스템 대역의 센터(시스템 대역이 15 PRBs, 75 PRBs인 경우)에 각각 위치시키고, 이를 제외한 PRBs를 이용해 increasing PRB number로 6개 연속적인 PRBs를 묶어서 상기의 협대역(narrowband)를 구성하도록 할 수 있다.As described above, in the case of a BL / CE terminal, data transmission and reception is possible only for 1.4 MHz (ie, 6 PRBs) through an arbitrary subframe regardless of system bandwidth. As a result, a transmission / reception band of an arbitrary BL / CE terminal is defined in an arbitrary uplink / downlink subframe, and a narrowband composed of 6 consecutive PRBs is defined as a unit for allocating it, and is defined for each system bandwidth. follow

Downlink narrowbands and

Four uplink narrowbands were constructed. However, when configuring the above narrowband (narrowband) in an arbitrary system bandwidth, the remaining RB (s) for the remaining RB (s) corresponding to the remaining divided by the total number of PRB constituting the system bandwidth by 6 Equally placed at the edges of both bands of the system band (if the system bandwidth consists of even PRBs), or the center of the system band (if the system band consists of 25 PRBs), or both edges and systems It can be located in the center of the band (if the system band is 15 PRBs, 75 PRBs), and by using the PRBs excluding this, 6 consecutive PRBs can be bundled with increasing PRB numbers to form the above narrowband.

Specifically, the narrowband configuration method may be defined as follows.

Downlink Narrowband ( Downlink narrowbands )

A narrowband is defined as six non-overlapping consecutive physical resource blocks in the frequency domain.The downlink in the downlink transmission bandwidth configured in the cell The total number of downlink narrowbands in the downlink transmission bandwidth configured in the cell is given by)

로 넘버링되는데 이 때 협대역

는 ㅇ아래와 같은 PRB 인덱스들로 구성된다.(The narrowbands are numbered

in order of increasing physical resource-block number where narrowband

is composed of physical resource-block indices)Narrow bands increase in order of increasing PRB numbers.

It is numbered as narrowband

Is composed of the following PRB indices (The narrowbands are numbered).

in order of increasing physical resource-block number where narrowband

is composed of physical resource-block indices)

where

Uplink Narrowband ( Uplink narrowbands )

A narrowband is defined as six non-overlapping consecutive physical resource blocks in the frequency domain.The uplink in the uplink transmission bandwidth configured in the cell The total number of narrowbands is determined as follows. (The total number of uplink narrowbands in the uplink transmission bandwidth configured in the cell is given by)

로 넘버링되는데 이 때 협대역

는 ㅇ아래와 같은 PRB 인덱스들로 구성된다.(The narrowbands are numbered

in order of increasing physical resource-block number where narrowband

is composed of physical resource-block indices)Narrow bands increase in order of increasing PRB numbers.

It is numbered as narrowband

Is composed of the following PRB indices (The narrowbands are numbered).

in order of increasing physical resource-block number where narrowband

is composed of physical resource-block indices)

where

[Resource allocation and DCI  format for BL / CE UE ]

According to the PDSCH and PUSCH resource allocation method for a BL / CE terminal, any base station configures a DCI including a PDSCH for any BL / CE terminal or PUSCH resource allocation information, and a PDSCH for the corresponding BL / CE terminal Alternatively, PUSCH transmission is defined to include narrowband index information for PRB (or VRB) allocation and RB allocation information within a corresponding narrowband.

In addition, RB allocation information in a corresponding narrowband is made by a continuous VRB resource allocation method, and accordingly, PDSCH is based on resource allocation type 2 and PUSCH is resource allocation type 0 ( It was defined to be done on the basis of resource allocation type 0). However, in the case of PUSCH, resource allocation may be performed based on resource allocation type 2 only for BL / CE terminals configured with CEModeB.

This embodiment proposes a method for supporting sub-PRB unit resource allocation as a method for improving spectral efficiency of uplink compared to a BL / CE terminal.

The frequency resource allocation unit for PUSCH transmission of a conventional BL / CE UE or a non-BL UE to which the CE mode is applied is composed of 1 RB unit, and accordingly, the resource allocation type 0 (respectively) according to the CE mode setting (CEModeA or CEModeB). RB resource allocation in a narrowband was made through DCI format 6-0A based on resource allocation type 0 and DCI format 6-0B based on resource allocation type 2).

In this embodiment, as a method for improving spectral efficiency for a PUSCH, a partial physical resource block (sub-PRB (eg 3) smaller than a physical resource eg block (PRB) in the frequency axis to improve the PUSCH transmission PSD of the UE) We propose a PUSCH resource allocation method to support resource allocation in units of subcarriers)).

The embodiments described below can be applied to a terminal, a base station, and a core network entity (MME) using all mobile communication technologies. For example, the present embodiments can be applied not only to a mobile communication terminal to which LTE technology is applied, but also to a next generation mobile communication (5G mobile communication, New-RAT) terminal, a base station, and an access and mobility function (AMF).

Unlike the physical resource block (PRB) composed of 12 subcarriers, the partial physical resource block (sub-PRB) described in this embodiment has 12 or fewer subcarriers (for example, 3, 4 or 6) Means a physical resource block (PRB) consisting of (subcarriers). (However, this embodiment is not limited by name.)

Hereinafter, a more various embodiment of a method for a UE and a base station to transmit and receive an uplink data channel (PDSCH) will be described in detail.

The embodiments described below may be applied individually or in any combination.

Example  1: Partial physical resource block (sub- PRB ) Based resource allocation setting

Any base station / cell / transmission / reception point is a UE-specific or cell-specific PUSCH resource allocation mode for a BL / CE terminal in which scheduling is performed through MPDCCH or a non-BL terminal in which CE mode is set. ) Can be defined to be set through higher layer signaling.

As a method for setting the corresponding PUSCH resource allocation mode, the PUSCH resource allocation mode is DCI format (eg DCI format 6-0A, 6-0B, etc.) in which the existing physical resource block (PRB) based resource allocation is applied separately from the CE mode setting. .) It may be defined to be determined through a setting on whether to perform PUSCH resource allocation based on a new DCI format based on a newly defined partial physical resource block (sub-PRB). However, the corresponding setting may be made through PUSCH transmission mode setting.

That is, PUSCH transmission mode (transmission mode) for the terminal that is scheduled through the existing MPDCCH is defined only Mode 1, but defines a new Mode 2, the Mode 2 is a partial physical resource block (sub-PRB) based PUSCH It can be defined to mean a transmission mode.

Alternatively, an information area for directly setting an existing physical resource block (PRB) unit PUSCH resource allocation mode and a partial physical resource block (sub-PRB) unit PUSCH resource allocation mode independently of PUSCH transmission mode setting and Through this, the corresponding base station / cell / transmission / reception point directly sets the PUSCH resource allocation mode for an arbitrary UE, and thus the above-described UE-specific or cell-specific upper layer signaling (higher layer) signaling).

As another method for setting the corresponding PUSCH resource allocation mode, a new CE mode (eg CEModeC) for PUSCH transmission and reception based on a partial physical resource block (sub-PRB) is defined, and a partial physical resource block ( Sub-PRB) based PUSCH resource allocation can be defined to be made.

Any base station / cell / transmission / reception point may be defined to dynamically signal a PUSCH resource allocation mode for a BL / CE terminal in which scheduling is performed through MPDCCH or a non-BL terminal in which CE mode is set through DCI. . That is, an information area for setting a resource grid type (PRB vs. sub-PRB) for frequency resource allocation in a DCI format for PUSCH resource allocation is defined, and through this, resource allocation of the corresponding PUSCH (resource allocation) ) It may be defined to indicate whether the information area is set based on an existing PRB or a partial physical resource block (sub-PRB).

Example  2: Partial physical resource block (sub- PRB ) Resource allocation method

Example  2-1

As a method for PUSCH resource allocation in a unit of a partial physical resource block (sub-PRB) for a non-BL UE to which a BL / CE UE or a CE mode is applied, a granule of a partial physical resource block (sub-PRB) for a corresponding UE The granularity, that is, the size of a partial physical resource block (sub-PRB) (number of contiguous subcarriers) is UE-specific or cell-specific. ) Semi-static through high layer signaling, and frequency resource allocation information based on granularity of a partial physical resource block (sub-PRB) set through DCI It can be defined to include.

Specifically, as granularities of three types of sub-physical resource blocks (sub-PRBs), each consisting of three subcarriers, four subcarriers, and six subcarriers as sub-PRBs for PUSCH resource allocation. When the granularity is supported, the base station performs a partial physical resource block (sub) for any UE through UE-specific or cell-specific higher layer signaling. -Set the type of PRB).

When the type of the partial physical resource block (sub-PRB) is set through higher layer signaling as described above, partial physical resource according to the type of the partial physical resource block (sub-PRB) set in the narrowband (narrowband) It is defined so that indexing of the resource block (sub-PRB) is performed, and corresponding {narrowband allocation information + partial physical resource block (sub-PRB) index allocation through UL grant DCI for PUSCH resource allocation Information}. For example, if a type of three subcarrier-based partial physical resource blocks (sub-PRBs) is defined, three consecutive non-overlapping subcarriers through a narrowband of 6 PRBs A total of 4 * 6 = 24 partial physical resource blocks (sub-PRBs) may be configured, and the corresponding partial physical resource blocks (sub-PRBs) are the highest frequency (highest frequency) partial physical resource blocks (sub- PRB) may be indexed from 0 to 23 in order or indexed from 0 to 23 in order from the lowest frequency partial physical resource block (sub-PRB). You can.

Accordingly, the corresponding UL grant DCI format includes the 0-23 partial physical resource blocks (sub-PRBs) together with the narrowband allocation information described above for the partial physical resource blocks (sub-PRBs) allocated for PUSCH transmission. It can be defined to transmit index information.

Alternatively, indexing of the partial physical resource block (sub-PRB) according to the type of the partial physical resource block (sub-PRB) may be defined to be performed in one PRB unit. That is, when the types of the three subcarrier-based partial physical resource blocks (sub-PRBs) are defined in the same manner as the above-described example, one PRB is composed of three consecutive non-overlapping subcarriers. It consists of a total of 4 partial physical resource blocks (sub-PRBs), and accordingly, indexing can be performed from 0 to 3 in order from the highest frequency partial physical resource block (sub-PRB). Or, in the reverse order, indexing may be performed from 0 to 3 in order from the lowest frequency partial physical resource block (sub-PRB). In this case, PUSCH resource allocation information transmitted through the UL grant DCI is {narrowband allocation information + PRB index allocation information within the corresponding narrowband + partial physical resource block (sub-PRB) within the corresponding PRB ) Index allocation information}.

Example  2-2

As another method for PUSCH resource allocation in a sub-physical resource block (sub-PRB) unit for a BL / CE UE or a non-BL UE to which the CE mode is applied, the method of the partial physical resource block (sub-PRB) for the corresponding UE Granularity, that is, the size of the partial physical resource block (sub-PRB) and the granularity-based PUSCH resource allocation information of the corresponding partial physical resource block (sub-PRB) are both UL grant DCI. It can be defined to be set through dynamic.

As an example of this, as described above, as sub-PRBs for PUSCH resource allocation, three types of partial physical resource blocks (sub-PRBs) composed of three subcarriers, four subcarriers, and six subcarriers are provided. When granularity is supported, it may be defined to include an information area for directly indicating the type of a sub-PRB through UL grant DCI.

Accordingly, any base station / cell / transmission / reception point and terminal are configured with three subcarriers for PUSCH resource allocation through a corresponding UL grant according to an information area indicating the type of a corresponding sub-physical resource block (sub-PRB) in the UL grant. Set and interpret respectively whether it is based on a partial physical resource block (sub-PRB) or based on a partial physical resource block (sub-PRB) composed of 4 subcarriers or 6 subcarriers, and correspondingly. It may be defined such that a type of a partial physical resource block (sub-PRB) that is a resource allocation unit through a resource allocation information area in a UL grant is determined.

However, resource allocation for a partial physical resource block (sub-PRB) through a corresponding resource allocation information area is as shown in Example 2-1 above (narrowband allocation information + narrowband) Within the partial physical resource block (sub-PRB) index allocation information} or {narrowband (narrowband) allocation information + PRB index allocation information + partial physical resource block (sub-PRB) index allocation information in the PRB}. .

Alternatively, the type of the partial physical resource block (sub-PRB) may be defined to be determined implicitly through resource allocation in the UL grant. As an example of this, the resource allocation information area may be configured as {narrowband allocation information + partial physical resource block (sub-PRB) allocation information in the narrowband}, and corresponding negotiation It is defined to define the type and index of the sub-physical resource block (sub-PRB) for PUSCH transmission in a table mapping method according to the setting of the sub-PRB allocation information in the narrowband. You can.

For example, a partial physical resource block (sub-PRB) allocation information in a corresponding narrowband (narrowband) may have a setting value of 0 to 53 in total, and the corresponding narrowband (narrowband) from 0 to 23 consecutively. When composed of sub-PRBs consisting of three non-overlapping subcarriers, a total of 4 * 6 = 24 partial physical resource blocks constituting the narrowband ( Sub-PRB) is defined to indicate the index of the allocated partial physical resource block (sub-PRB), and similarly, from 24 to 41, the corresponding narrowband 4 consecutive non-overlapping subcarriers When configured as a base partial physical resource block (sub-PRB), a total of 3 * 6 = 18 4 subcarrier-based partial physical resource blocks (sub-PRB) constituting the narrowband are allocated. Define to indicate the index of the sub-physical resource block (sub-PRB), last From 42 to 53, when the corresponding narrowband is composed of 6 consecutive non-overlapping subcarrier-based partial physical resource blocks (sub-PRBs), the corresponding narrowband is configured. It can be defined to indicate the index of the allocated partial physical resource block (sub-PRB) among a total of 2 * 6 = 12 6 subcarrier-based partial physical resource blocks (sub-PRB).

As another example of this, the resource allocation information area is defined to be composed of {narrowband allocation information + PRB index allocation information + partial physical resource block (sub-PRB) allocation information in the PRB}, A type and index of a partial physical resource block (sub-PRB) for transmission of a corresponding PUSCH may be defined to be determined by a table mapping method according to setting of sub-PRB allocation information in a corresponding PRB. .

For example, the partial physical resource block (sub-PRB) allocation information in the corresponding PRB can be defined in total from 0 to 8, and from 0 to 3 {narrowband allocation information + PRB index allocation information When the PRB allocated through} is composed of three consecutive non-overlapping sub-carrier-based partial physical resource blocks (sub-PRBs), a total of four partial physical resource blocks constituting the PRB ( Sub-PRB) is defined to indicate the index of the allocated partial physical resource block (sub-PRB), and similarly, from 4 to 6, the allocated PRB is based on four non-overlapping consecutive subcarriers. When configured as a physical resource block (sub-PRB), it is defined to indicate an index of an allocated partial physical resource block (sub-PRB) among a total of three partial physical resource blocks (sub-PRBs) constituting the PRB, Finally, from 7 to 8, the assigned PRBs are non-o. verlapping) When composed of 6 subcarrier-based partial physical resource blocks (sub-PRBs), allocated partial physical resource blocks (sub-PRBs) among 2 sub-PRBs constituting the PRB ) Can be defined to indicate the index.

In the above-described embodiment, the number of subcarriers constituting the partial physical resource block (sub-PRB) has been described based on the cases of 3, 4, and 6, but the number of subcarriers of a divisor of 12 or all natural numbers less than 12 is determined. It is apparent that the present embodiment can be applied to all types of sub-physical resource blocks (sub-PRBs).

1 is a diagram showing a procedure for a terminal to transmit an uplink data channel in this embodiment.

Referring to FIG. 1, a UE may receive uplink data channel resource allocation information in a sub-PRB unit (S100).

At this time, the uplink data channel resource allocation information is characterized in that it is configured based on the frequency interval setting information in the unit of a partial physical resource block (sub-PRB).

At this time, the UE may receive uplink data channel resource allocation information through UE-specific or cell-specific higher layer signaling (ex. RRC signaling). have. Alternatively, the terminal may receive uplink data channel resource allocation information through DCI. Hereinafter, an example in which uplink data channel resource allocation information is transmitted to a terminal using RRC signaling or DCI in FIGS. 3 and 4 will be described.

At this time, the number of subcarriers that can constitute a partial physical resource block (sub-PRB) may be selected from any integer of 12 or less, but only an integer satisfying a specific condition is a partial physical resource block (sub-PRB) ) Can be set to be the number of subcarriers that can be configured.

For example, the number of subcarriers capable of forming a partial physical resource block (sub-PRB) may be selected as one of the elements consisting of all or part of the divisors of 12. For example, the number of subcarriers that can make up a partial physical resource block (sub-PRB) may be one of {1,2,3,4,6}, which is a factor of 12, {1,2,3 It can be one of {3,4,6} which is a subset of, 4,6}. When the number of subcarriers capable of forming the partial physical resource block (sub-PRB) is a factor of 12, one physical resource block (PRB) may be divided into an integer number of partial physical resource blocks (sub-PRB). .

As another example, 3, 6, which is a number satisfying a specific function, such as 3 * (2 ^ n) (n = 0,1), may be the number of subcarriers capable of constructing a sub-PRB. You can also set it.

In this way, if the condition of the number of subcarriers capable of constructing the partial physical resource block (sub-PRB) is limited, when the base station sends resource allocation information for the uplink data channel to the terminal, the partial physical resource block (sub- PRB) has an advantage in that transmission efficiency can be increased because the size of information required to inform the unit is reduced.

If a resource of an uplink data channel is allocated in a frequency domain in a sub-PRB unit, a resource unit indicating a unit of a time period resource allocated to an uplink data channel for rate matching The length of a resource unit (RU), that is, the number of subframes constituting a resource unit may be determined by the number of subcarriers constituting a partial physical resource block (sub-PRB).

For example, if the number of subcarriers constituting a partial physical resource block (sub-PRB) is three, compared with the resource allocation in the existing PRB unit, the unit of resources allocated in the frequency section is reduced to 1/4, so the time period is reduced. In the length of the resource unit may be 4 subframes.

As another example, if the number of subcarriers constituting a sub-physical resource block (sub-PRB) is 6, compared with the resource allocation in the existing PRB unit, the resource allocated in the frequency section is reduced to 1/2, so in the time period The length of the resource unit may be 2 subframes.

In this way, when the number of subframes constituting the resource unit is N and the number of subcarriers constituting the partial physical resource block (sub-PRB) is K, N and K may be determined such that N * K = 12.

In addition, the terminal may transmit the uplink data channel to the base station based on the uplink data channel resource allocation information received from the base station (S110).

At this time, when frequency resources for uplink data channels are allocated in units of partial physical resource blocks (sub-PRBs), the maximum number of subframes constituting the uplink data channel resources in the time axis is according to the aforementioned CE mode. It may vary. For example, in the case of the above-described CEModeA, since the uplink data channel has no or little repetitive transmission, it can be configured with a small number of subframes (for example, up to 16 or 32), and in the case of CEModeB, coverage expansion is performed. Since many repetitive transmissions may occur, a number of subframes (eg, up to 1024 or 2048) than CEModeA may be configured.

For example, when CEModeA is used for uplink data channel transmission, the maximum possible number of subframes is 32, and the partial physical resource block (sub-PRB) is composed of 6 subcarriers, the uplink data channel resources of the time axis are Since the length of the resource unit (RU) which is a unit is 2 subframes, a maximum of 32/2 = 16 resource units may be allocated for uplink data channel transmission. That is, the maximum number of resource units that can be allocated for uplink data channel transmission may be (the maximum number of possible subframes) / (the number of subframes per resource unit).

At this time, in each CE mode, the time period length of the uplink data channel resource may also be represented as the length of the resource unit (RU) according to the partial physical resource block (sub-PRB).

For example, when CEModeA is used when transmitting an uplink data channel, the maximum number of possible resource units is 32, and a partial physical resource block (sub-PRB) is composed of 6 subcarriers, the uplink data channel resources of the time axis are Since the length of the resource unit (RU) which is a unit is 2 subframes, up to 32 * 2 = 64 subframes may be allocated for uplink data channel transmission. That is, the maximum number of subframes that can be allocated for uplink data channel transmission may be (the maximum number of possible resource units) * (the number of subframes per resource unit).

2 is a diagram showing a procedure for a base station to receive an uplink data channel in this embodiment.

Referring to FIG. 2, the base station may transmit uplink data channel resource allocation information in a sub-PRB unit (S200).

At this time, the uplink data channel resource allocation information is characterized in that it is configured based on the frequency interval setting information in a sub-physical resource block (sub-PRB) unit.

At this time, the base station may transmit uplink data channel resource allocation information through UE-specific or cell-specific higher layer signaling (ex. RRC signaling). . Alternatively, the terminal may transmit uplink data channel resource allocation information through DCI. Hereinafter, an example in which uplink data channel resource allocation information is transmitted from a base station using RRC signaling or DCI in FIGS. 3 and 4 will be described.

At this time, as described with reference to FIG. 1, the number of subcarriers that can constitute a partial physical resource block (sub-PRB) may be selected from any integer of 12 or less, but only an integer satisfying a specific condition is partially physical It may be set to be the number of subcarriers capable of configuring a resource block (sub-PRB).

For example, as described with reference to FIG. 1, the number of subcarriers capable of forming a partial physical resource block (sub-PRB) may be selected as one of elements of a group consisting of all or part of the divisors of 12. In addition, as another example, the number of subcarriers capable of constructing a partial physical resource block (sub-PRB) is 3, 6, which is a number satisfying a specific function, such as 3 * (2 ^ n) (n = 0,1). Can be set to be

As described above in FIG. 1, if frequency resources of an uplink data channel are allocated in units of sub-PRBs, time period resources allocated to the uplink data channels for rate matching The length of a resource unit (RU) indicating a unit of ie, the number of subframes constituting a resource unit may be determined by the number of subcarriers constituting a partial physical resource block (sub-PRB). For example, when the number of subframes constituting a resource unit is N and the number of subcarriers constituting a partial physical resource block (sub-PRB) is K, N and K may be determined such that N * K = 12.

In addition, the base station may receive an uplink data channel configured based on the uplink data channel resource allocation information described above from the terminal (S210).

At this time, as described above with reference to FIG. 1, when resources for an uplink data channel are allocated in units of partial physical resource blocks (sub-PRBs), the maximum number of subframes constituting the uplink data channel resources in the time axis is It may vary according to the above-described CE mode.

For example, in the case of the above-described CEModeA, since the uplink data channel has no or little repetitive transmission, it can be configured with a small number of subframes (for example, up to 16 or 32), and in the case of CEModeB, coverage expansion is performed. Since many repetitive transmissions may occur, a number of subframes (eg, up to 1024 or 2048) than CEModeA may be configured.

In this case, in each CE mode, the time period length of the uplink data channel resource can also be expressed as the length of the resource unit RU according to the partial physical resource block (sub-PRB).

3 is a diagram illustrating an example of transmitting uplink data channel resource allocation information to a terminal through RRC signaling in this embodiment.

Referring to FIG. 3, in PUSCH-ResourceAllocation for transmitting uplink data channel resource allocation information to a terminal (however, the present embodiment is not limited by name), resource allocation in PRB units is performed as in the conventional case, or Whether to perform resource allocation in a sub-physical resource block (sub-PRB) unit may be transmitted through a resourceAllocationMode (however, this embodiment is not limited by name) parameter. In addition, when resource allocation is performed in sub-PRB units, the granularity of the sub-PRB, that is, the number of subcarriers constituting the sub-PRB is subPRBSize (however, this embodiment is not limited by name) It can be transmitted through parameters. At this time, as described above in FIG. 1, the number of subcarriers that can constitute a sub-PRB may be selected as one of a specific integer (3,4,6 in this example), not an arbitrary integer of 12 or less.

4 is a diagram illustrating an example of transmitting uplink data channel resource allocation information to a terminal through DCI in this embodiment.

Referring to FIG. 4, a field indicating whether to use a resource allocation method of a PRB unit or a resource allocation method of a sub-PRB unit in a DCI format for PUSCH resource allocation may be additionally included. At this time, the corresponding field may consist of 1 bit.

In addition, a field indicating a sub-PRB unit in the DCI format for PUSCH resource allocation, that is, the number of subcarriers constituting one sub-PRB may be additionally included. If the unit of the sub-PRB becomes an arbitrary integer of 12 or less, a total of 4 bits are required for the corresponding field, but as described above, if the number of possible subcarriers constituting the sub-PRB is limited, this field is 1 bit. (The number of possible subcarriers is 2 or less, for example 3,6) or 2 bits (the number of possible subcarriers is 4 or less, for example 3,4,6) may be required.

5 is a diagram showing the configuration of a base station according to the present embodiments.

Referring to FIG. 5, the base station 500 includes a control unit 510, a transmission unit 520, and a reception unit 530.

The control unit 510 controls the overall operation of the base station 500 to receive the uplink data channel from the terminal.

The transmitting unit 520 and the receiving unit 530 are used to transmit and receive signals, messages, and data necessary to perform the present invention.

The transmitter 520 may transmit uplink data channel resource allocation information in a sub-PRB unit unit to the terminal.

At this time, the uplink data channel resource allocation information is characterized in that it is configured based on the frequency interval setting information in a partial physical resource block (sub-PRB) unit.

At this time, the base station transmits uplink data channel resource allocation information to the terminal through UE-specific or cell-specific higher layer signaling (ex. RRC signaling). Can. Alternatively, the base station may transmit uplink data channel resource allocation information to the terminal through DCI.

At this time, the number of subcarriers that can constitute a partial physical resource block (sub-PRB) may be selected from any integer of 12 or less, but only an integer satisfying a specific condition is a partial physical resource block (sub-PRB) ) Can be set to be the number of subcarriers that can be configured.

For example, the number of subcarriers capable of forming a partial physical resource block (sub-PRB) may be selected as one of the elements consisting of all or part of the divisors of 12. For example, the number of subcarriers that can make up a partial physical resource block (sub-PRB) may be one of {1,2,3,4,6}, which is a factor of 12, {1,2,3 It can be one of {3,4,6} which is a subset of, 4,6}. When the number of subcarriers capable of forming the partial physical resource block (sub-PRB) is a factor of 12, one physical resource block (PRB) may be divided into an integer number of partial physical resource blocks (sub-PRB). .

As another example, 3, 6, which is a number satisfying a specific function, such as 3 * (2 ^ n) (n = 0,1), may be the number of subcarriers capable of constructing a sub-PRB. You can also set it.

In this way, if the condition of the number of subcarriers capable of constructing the partial physical resource block (sub-PRB) is limited, when the base station sends resource allocation information for the uplink data channel to the terminal, the partial physical resource block (sub- PRB) has an advantage in that transmission efficiency can be increased because the size of information required to inform the unit is reduced.

If a resource of an uplink data channel is allocated in units of a sub-PRB, a resource unit (RU, indicating a unit of time period resources allocated to the uplink data channel for rate matching) The length of the resource unit), that is, the number of subframes constituting the resource unit may be determined by the number of subcarriers constituting the partial physical resource block (sub-PRB).

For example, if the number of subcarriers constituting a partial physical resource block (sub-PRB) is three, compared with the resource allocation in the existing PRB unit, the unit of resources allocated in the frequency section is reduced to 1/4, so the time period is reduced. In the length of the resource unit may be 4 subframes.

As another example, if the number of subcarriers constituting a sub-physical resource block (sub-PRB) is 6, compared with the resource allocation in the existing PRB unit, the resource allocated in the frequency section is reduced to 1/2, so in the time period The length of the resource unit may be 2 subframes.

In this way, when the number of subframes constituting the resource unit is N and the number of subcarriers constituting the partial physical resource block (sub-PRB) is K, N and K may be determined such that N * K = 12.

When frequency resources for uplink data channels are allocated in units of partial physical resource blocks (sub-PRBs), the maximum number of subframes constituting the uplink data channel resources in the time axis may vary according to the aforementioned CE mode. .

For example, in the case of the above-mentioned CEModeA, since the uplink data channel has no or little repetitive transmission, it can be configured with a small number of subframes (for example, up to 16 or 32), and in the case of CEModeB, coverage expansion is performed. Since many repetitive transmissions may occur, a number of subframes (eg, up to 1024 or 2048) than CEModeA may be configured.

In this case, in each CE mode, the time period length of the uplink data channel resource can also be represented by the length of the resource unit RU according to the partial physical resource block (sub-PRB).

The receiver 530 may receive an uplink data channel configured based on the uplink data channel resource allocation information transmitted from the transmitter 520 from the terminal.

6 is a diagram showing the configuration of a terminal according to the present embodiments.

Referring to FIG. 6, the terminal 600 includes a receiver 610, a controller 620, and a transmitter 630.

The reception unit 610 receives control information, data, and messages from the base station. Specifically, the receiver 610 may receive uplink data channel resource allocation information in a sub-PRB unit unit from a base station.

At this time, the uplink data channel resource allocation information is characterized in that it is configured based on the frequency interval setting information in a partial physical resource block (sub-PRB) unit.

At this time, the UE may receive uplink data channel resource allocation information through UE-specific or cell-specific higher layer signaling (ex. RRC signaling). have. Alternatively, the terminal may receive uplink data channel resource allocation information through DCI.

At this time, the number of subcarriers that can constitute a partial physical resource block (sub-PRB) may be selected from any integer of 12 or less, but only an integer satisfying a specific condition is a partial physical resource block (sub-PRB) ) Can be set to be the number of subcarriers that can be configured.

As described above, as an example, the number of subcarriers that may constitute a partial physical resource block (sub-PRB) may be selected as one of elements of a group consisting of all or a part of 12 divisors. For example, the number of subcarriers that can make up a partial physical resource block (sub-PRB) may be one of {1,2,3,4,6}, which is a factor of 12, {1,2,3 It can be one of {3,4,6} which is a subset of, 4,6}. When the number of subcarriers capable of forming the partial physical resource block (sub-PRB) is a factor of 12, one physical resource block (PRB) may be divided into an integer number of partial physical resource blocks (sub-PRB). .

As another example, 3, 6, which is a number satisfying a specific function, such as 3 * (2 ^ n) (n = 0,1), may be the number of subcarriers capable of constructing a sub-PRB. You can also set it.

In this way, if the condition of the number of subcarriers capable of constructing the partial physical resource block (sub-PRB) is limited, when the base station sends resource allocation information for the uplink data channel to the terminal, the partial physical resource block (sub- PRB) has an advantage in that transmission efficiency can be increased because the size of information required to inform the unit is reduced.

If a resource of an uplink data channel is allocated in units of a sub-PRB, a resource unit (RU, indicating a unit of time period resources allocated to the uplink data channel for rate matching) The length of the resource unit), that is, the number of subframes constituting the resource unit may be determined by the number of subcarriers constituting the partial physical resource block (sub-PRB).

For example, if the number of subcarriers constituting a partial physical resource block (sub-PRB) is three, compared with the resource allocation in the existing PRB unit, the unit of resources allocated in the frequency section is reduced to 1/4, so the time period is reduced. In the length of the resource unit may be 4 subframes.

As another example, if the number of subcarriers constituting a sub-physical resource block (sub-PRB) is 6, compared with the resource allocation in the existing PRB unit, the resource allocated in the frequency section is reduced to 1/2, so in the time period The length of the resource unit may be 2 subframes.

In this way, when the number of subframes constituting the resource unit is N and the number of subcarriers constituting the partial physical resource block (sub-PRB) is K, N and K may be determined such that N * K = 12.

The control unit 620 controls the overall operation of the terminal for the terminal to transmit the uplink data channel.

The transmitter 630 may transmit the uplink data channel to the base station based on the uplink data channel resource allocation information received by the receiver 610.

At this time, as described above, when resources for an uplink data channel are allocated in a unit of a partial physical resource block (sub-PRB), the maximum number of subframes constituting the uplink data channel resource in the time axis is the aforementioned CE It may vary depending on the mode.

For example, in the case of the above-mentioned CEModeA, since the uplink data channel has no or little repetitive transmission, it can be configured with a small number of subframes (for example, up to 16 or 32), and in the case of CEModeB, coverage expansion is performed. Since many repetitive transmissions may occur, a number of subframes (eg, up to 1024 or 2048) than CEModeA may be configured.

At this time, in each CE mode, the time period length of the uplink data channel resource may also be represented as the length of the resource unit (RU) according to the partial physical resource block (sub-PRB).

The standard contents or standard documents mentioned in the above-described embodiments are omitted to simplify the description of the specification and constitute a part of the specification. Therefore, it should be construed that adding the contents of the above standard contents and a part of the standard documents to the present specification or in the claims falls 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 variations 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 explain them, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the claims below, and all technical spirits within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims (20)

In a method for a terminal to transmit an uplink data channel (PUSCH),
Receiving resource allocation mode information for an uplink data channel through an RRC message;
Receiving uplink data channel resource allocation information from a base station; And
When information indicating resource allocation based on a partial physical resource block unit is received, the number of subcarriers and index information of the partial physical resource block is checked based on the uplink data channel resource allocation information and preset table information, And transmitting the uplink data channel to the base station using a resource unit determined based on the number of subcarriers.
The resource allocation mode information,
Information indicating whether to support resource allocation based on the partial physical resource block unit,
The information indicating resource allocation based on the partial physical resource block unit is:
Included in downlink control information,
The number of subcarriers of the partial physical resource block,
It is determined as 3 or 6, the time interval length of the resource unit is determined based on the number of subcarriers,
A method of multiplying the number of subcarriers by the length of the time interval of the resource unit is set to be the same regardless of the number of subcarriers.
According to claim 1,
The uplink data channel resource allocation information,
Received through RRC signaling,
The information indicating the resource allocation based on the partial physical resource block unit is set to 1 bit.
According to claim 1,
The uplink data channel resource allocation information,
Method included in the downlink control information.
delete delete A method for a base station to receive an uplink data channel (PUSCH),
Transmitting resource allocation mode information for an uplink data channel through an RRC message;
Transmitting uplink data channel resource allocation information to a terminal; And
When information indicating resource allocation based on a partial physical resource block unit is transmitted, based on the uplink data channel resource allocation information and preset table information, the number of subcarriers of the partial physical resource block identified in the terminal is determined. And receiving the uplink data channel from the terminal by using a resource unit determined based on the above.
The resource allocation mode information,
Information indicating whether to support resource allocation based on the partial physical resource block unit,
The information indicating resource allocation based on the partial physical resource block unit is:
Included in the downlink control information,
The number of subcarriers of the partial physical resource block,
It is determined as 3 or 6, the time interval length of the resource unit is determined based on the number of subcarriers,
A method of multiplying the number of subcarriers by the length of the time interval of the resource unit is set to be the same regardless of the number of subcarriers.
The method of claim 6,
The uplink data channel resource allocation information,
Transmitted to the terminal through RRC signaling,
The information indicating the resource allocation based on the partial physical resource block unit is set to 1 bit.
The method of claim 6,
The uplink data channel resource allocation information,
Method included in the downlink control information.
delete delete In the terminal for transmitting the uplink data channel (PUSCH),
A receiver configured to receive resource allocation mode information for an uplink data channel through an RRC message and receive uplink data channel resource allocation information from a base station;
When information indicating resource allocation based on a partial physical resource block unit is received, a control unit checking the number of subcarriers and index information of the partial physical resource block based on the uplink data channel resource allocation information and preset table information ; And
It characterized in that it comprises a; transmitting unit for transmitting the uplink data channel to the base station using a resource unit determined based on the number of subcarriers,
The resource allocation mode information,
Information indicating whether to support resource allocation based on the partial physical resource block unit,
The information indicating resource allocation based on the partial physical resource block unit is:
Included in the downlink control information,
The number of subcarriers of the partial physical resource block,
It is determined as 3 or 6, the time interval length of the resource unit is determined based on the number of subcarriers,
The terminal multiplied by the number of subcarriers and the time interval length of the resource unit is set to be the same regardless of the number of subcarriers.
The method of claim 11,
The uplink data channel resource allocation information,
Received through RRC signaling,
The information indicating the resource allocation based on the partial physical resource block unit is set to 1 bit.
The method of claim 11,
The uplink data channel resource allocation information,
A terminal characterized in that it is included in the downlink control information.
delete delete In the base station receiving the uplink data channel (PUSCH),
A transmitter for transmitting resource allocation mode information for an uplink data channel through an RRC message and transmitting uplink data channel resource allocation information to an MTC terminal; And
When information indicating resource allocation based on a partial physical resource block unit is transmitted, based on the uplink data channel resource allocation information and preset table information, the number of subcarriers of the partial physical resource block identified in the terminal is determined. It characterized in that it comprises a; receiving unit for receiving the uplink data channel from the terminal using the resource unit determined on the basis,
The resource allocation mode information,
Information indicating whether to support resource allocation based on the partial physical resource block unit,
The information indicating resource allocation based on the partial physical resource block unit is:
Included in the downlink control information,
The number of subcarriers of the partial physical resource block,
It is determined as 3 or 6, the time interval length of the resource unit is determined based on the number of subcarriers,
The base station characterized in that the value multiplied by the number of subcarriers and the length of the time interval of the resource unit is set to be the same regardless of the number of subcarriers.
The method of claim 16,
The uplink data channel resource allocation information,
Transmitted to the terminal through RRC signaling,
The information indicating the resource allocation based on the partial physical resource block unit is set to 1 bit.
The method of claim 16,
The uplink data channel resource allocation information,
Base station characterized in that it is included in the downlink control information.
delete delete

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