KR20140018547A - Method and apparatus for transmitting and receiving response information for received data in inter-band tdd transmission mode - Google Patents

Abstract

The present invention relates to a method and an apparatus for transmitting and receiving response information for received data in an interband TDD transmission mode. According to one embodiment of the present invention, the method for transmitting and receiving response information for received data in an interband TDD transmission mode includes a step of receiving data and a step of transmitting response information to the receive data. [Reference numerals] (AA) Base station; (BB) Terminal; (CC) SCC setting, PF3, TDD setting, self-scheduling, and etc.; (S1010) RRC setting(RRC Configuration); (S1020) Set PDSCH HARQ timing for PCell and SCell according to TDD setting; (S1030) Transmit UL grant for the PUSCH; (S1040) Determine the number of HARQ-ACK bits, mapping to the PUSCH, and prepare to transmit; (S1050) Transmit HARQ-ACK through the PUSCH; (S1060) HARQ-ACK decoding

Description

Method and apparatus for transmitting and receiving response information of received data in interband TD transmission method {Method and Apparatus for Transmitting and Receiving Response Information for Received Data in Inter-Band TDD Transmission Mode}

The present invention relates to a method and apparatus for performing and controlling HARQ-ACK index mapping and uplink resource allocation for channel selection transmission in an interband TDD transmission scheme. That is, a method of implementing PUSCH ACK / NACK (A / N) transmission by overcoming the limitation of transmission / reception subframes and mapping HARQ-ACK indexes in a situation in which TDD transmission schemes between bands are different and intercarrier scheduling is set. Let's look at one device.

As communications systems evolved, consumers, such as businesses and individuals, used a wide variety of wireless terminals. In a mobile communication system such as the current 3GPP family Long Term Evolution (LTE) and LTE-A (LTE Advanced), a high-speed and large-capacity communication system capable of transmitting and receiving various data such as video and wireless data, , It is required to develop a technology capable of transmitting large-capacity data based on a wired communication network. As a method for transmitting a large amount of data, data may be efficiently transmitted through a plurality of component carriers (CCs). Meanwhile, in a time division duplex (TDD) system, transmission (Tx) and reception (Reception (Rx)) may be divided into time slots using a specific frequency band and may transmit and receive data.

In the conventional CA TDD, the A / N transmission method through the PUSCH is assumed to have the same number of DL subframes associated with one PCell UL subframe. This is because in the conventional CA TDD, all serving cells are defined to have the same TDD UL-DL configuration. However, in a system in which different TDD settings are configured on different carriers, additional handling is required to accurately support the A / N transmission method through the PUSCH. Therefore, the present specification proposes an additional handling method for solving errors of the A / N transmission method through the PUSCH that may occur in such an environment.

That is, there is a need for a solution to the existing channel selection transmission method caused by different PDSCH HARQ timing between the PCell and the SCell, and to improve the problem.

In a CA environment, a method of handling A / N transmission through a PUSCH to match different PDSCH HARQ timing between each serving cell is proposed.

)에 기초하여 결정되는 것을 특징으로 하는 인터밴드 TDD 전송 방식에서 수신 데이터의 응답 정보 전송 방법을 제공한다.According to an embodiment of the present invention, in a terminal connected to a base station that controls two or more bands having different time division duplex (TDD) settings, TDD configuration information of a first serving cell and a second serving cell may be described. Receiving from a base station; Receiving data from the base station in downlink subframes of the first and second serving cells; And transmitting response information about data received in downlink subframes of the first serving cell and the second serving cell through a PUSCH (Physical Uplink Shared CHannel) in an uplink subframe, wherein the first serving If the TDD configuration of one serving cell of the cell and the second serving cell is 5, the number of bits of response information for the serving cell having the TDD configuration of 5 is related to the uplink subframe in the serving cell having the TDD configuration of 5. The number of downlink subframes (M _c ) or the number of subframes to which downlink data transmission is allocated among the related downlink subframes (

In the interband TDD transmission scheme, the response information transmission method of the received data is determined based on a).

)에 기초하여 결정되는 것을 특징으로 하는 인터밴드 TDD 전송 방식에서 수신 데이터의 응답 정보 전송 방법을 제공한다. According to another embodiment of the present invention, in a terminal connected to a base station that controls two or more bands having different time division duplex (TDD) settings, TDD configuration information of a first serving cell and a second serving cell may be described. Receiving from a base station; Receiving data from the base station in downlink subframes of the first and second serving cells; And transmitting response information about data received in downlink subframes of the first serving cell and the second serving cell through a PUSCH (Physical Uplink Shared CHannel) in an uplink subframe, wherein the first serving If the TDD setting of one serving cell of the cell and the second serving cell is 0, the number of bits of the response information for the first serving cell and the second serving cell is equal to the uplink sub in the serving cell in which the TDD configuration is 0. The number of subframes to which downlink data transmission is allocated among downlink subframes related to the frame (

In the interband TDD transmission scheme, the response information transmission method of the received data is determined based on a).

)에 기초하여 결정하는 제어부를 포함하는 것을 특징으로 하는 단말을 제공한다. According to another embodiment of the present invention, in a terminal connected to a base station that controls two or more bands having different time division duplex (TDD) settings, TDD configuration information of a first serving cell and a second serving cell may be described. A receiving unit for receiving data from a base station and receiving data from the base station in downlink subframes of the first serving cell and the second serving cell; A transmitter for transmitting response information about data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe; And when the TDD setting of one serving cell of the first serving cell and the second serving cell is 5, the number of bits of response information for the serving cell having the TDD setting of 5 is increased in the serving cell having the TDD setting of 5. The number of downlink subframes (M _c ) associated with the link subframe or the number of subframes to which downlink data transmission is allocated among the related downlink subframes (

It provides a terminal characterized in that it comprises a control unit for determining based on).

)에 기초하여 결정하는 제어부를 포함하는 것을 특징으로 하는 단말을 제공한다. According to another embodiment of the present invention, in a terminal connected to a base station that controls two or more bands having different time division duplex (TDD) settings, TDD configuration information of a first serving cell and a second serving cell may be described. A receiving unit for receiving data from a base station and receiving data from the base station in downlink subframes of the first serving cell and the second serving cell; A transmitter for transmitting response information on data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe; And when the TDD setting of one serving cell of the first serving cell and the second serving cell is 0, the number of bits of response information for the first serving cell and the second serving cell is 0. The number of subframes to which downlink data transmission is allocated among downlink subframes related to the uplink subframe in

It provides a terminal characterized in that it comprises a control unit for determining based on).

)에 기초하여 결정되는 것을 특징으로 하는 인터밴드 TDD 전송 방식에서 수신 데이터의 응답 정보 수신 방법을 제공한다. Another embodiment of the present invention, in the base station for controlling two or more bands of different time division duplex (TDD) configuration, transmitting the TDD configuration information of the first serving cell (ServingCell) and the second serving cell to the terminal ; Transmitting data to the terminal in downlink subframes of the first serving cell and the second serving cell; And receiving, from the terminal, response information about data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe. If the TDD configuration of one serving cell of the first serving cell and the second serving cell is 5, the number of bits of the response information for the serving cell having the TDD configuration of 5 is the uplink sub in the serving cell having the TDD configuration of 5. The number of downlink subframes (M _c ) associated with a frame or the number of subframes to which downlink data transmission is allocated among the related downlink subframes (

In the inter-band TDD transmission method, it is determined based on the) provides a method for receiving response information of the received data.

Another embodiment of the present invention, in the base station for controlling two or more bands of different time division duplex (TDD) configuration, transmitting the TDD configuration information of the first serving cell (ServingCell) and the second serving cell to the terminal ;

)에 기초하여 결정되는 것을 특징으로 하는 인터밴드 TDD 전송 방식에서 수신 데이터의 응답 정보 수신 방법을 제공한다. Transmitting data to the terminal in downlink subframes of the first serving cell and the second serving cell; And receiving, from the terminal, response information about data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe. When the TDD setting of one serving cell of the first serving cell and the second serving cell is 0, the number of bits of response information for the first serving cell and the second serving cell is determined in the serving cell in which the TDD configuration is 0. The number of subframes to which downlink data transmission is allocated among the downlink subframes related to the uplink subframe (

In the inter-band TDD transmission method, it is determined based on the) provides a method for receiving response information of the received data.

)에 기초하여 결정되는 것을 특징으로 하는 기지국을 제공한다. According to another embodiment of the present invention, in a base station controlling two or more bands having different time division duplex (TDD) settings, TDD configuration information of a first serving cell and a second serving cell are transmitted to a terminal. A transmitter for transmitting data to the terminal in downlink subframes of the first serving cell and the second serving cell; A receiver configured to receive response information from the terminal in response to data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe; And a controller which decodes the response information based on the number of bits of the response information, and when the TDD setting of one serving cell of the first and second serving cells is 5, the serving having a TDD setting of 5 The number of bits of the response information for the cell is the number of downlink subframes ( _Mc ) related to the uplink subframe in the serving cell having the TDD configuration of 5 or downlink data transmission among the associated downlink subframes. Number of subframes (

It provides a base station characterized in that it is determined based on).

)에 기초하여 결정되는 것을 특징으로 하는 기지국을 제공한다.
According to another embodiment of the present invention, in a base station controlling two or more bands having different time division duplex (TDD) settings, TDD configuration information of a first serving cell and a second serving cell are transmitted to a terminal. A transmitter for transmitting data from the base station to the terminal in downlink subframes of the first serving cell and the second serving cell; A receiver configured to receive response information from the terminal in response to data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe; And a control unit for decoding the response information based on the number of bits of the response information. When the TDD setting of one serving cell of the first serving cell and the second serving cell is 0, the first serving cell and The number of bits of response information for the second serving cell is the number of subframes to which downlink data transmission is allocated among downlink subframes related to the uplink subframe in the serving cell in which the TDD configuration is 0 (

It provides a base station characterized in that it is determined based on).

1 is a diagram illustrating an interband CA environment according to an embodiment of the present specification.
2 is a diagram illustrating CA between bands in which different TDD settings are made according to an embodiment of the present specification.
3 is a diagram illustrating an operation method for each subframe according to a transmission mode of a user terminal in the inter-band CA environment of FIGS. 1 and 2.
4 shows an example of a case where the TDD UL-DL configuration is 0. FIG.
5 shows an example in the case where the TDD UL-DL configuration is 2.
6 shows an example in the case where the TDD UL-DL configuration is five.
7 and 8 illustrate an example of a TDD CA environment when the TDD UL-DL configuration of the PCell is 5 and the TDD UL-DL configuration of the SCell is 2.
FIG. 9 shows an example of a TDD CA environment when the TDD UL-DL configuration of the PCell is 0 and the TDD UL-DL configuration of the SCell is 2.
10 illustrates a HARQ-ACK transmission method according to an embodiment.
FIG. 11 is a diagram for describing operation S1040 in detail in the HARQ-ACK transmission method of FIG. 10.
12 is a block diagram illustrating a configuration of a base station according to an embodiment.
13 is a block diagram illustrating a configuration of a terminal according to an embodiment.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

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

A base station or a cell generally refers to a station that communicates with a user terminal, and includes a Node-B, an evolved Node-B, an Sector, a Site, and a BTS. It may be called other terms such as Base Transceiver System, Access Point, Relay Node.

That is, in the present specification, a base station or a cell is interpreted in a comprehensive sense to indicate some areas or functions covered by a base station controller (BSC) in CDMA, a NodeB in WCDMA, an eNB or a sector (site) in LTE, and the like. It is meant to cover various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node communication range.

Herein, the user terminal and the base station are used in a broad sense as the two transmitting and receiving subjects used to implement the technical or technical idea described in this specification, and are not limited by a specific term or word. The user terminal and the base station are two (uplink or downlink) transmission and reception subjects used in implementing the technology or the technical idea described in the present invention and are used in a comprehensive sense and are not limited by the terms or words specifically referred to. Here, the uplink (Uplink, UL, or uplink) means a method for transmitting and receiving data to the base station by the user terminal, the downlink (Downlink, DL, or downlink) is the base station to the user terminal 10 Means a method of transmitting and receiving data.

There are no restrictions on multiple access schemes applied to wireless communication systems. Various multiple access schemes such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), OFDM-FDMA, OFDM- Can be used. An embodiment of the present invention can be applied to asynchronous wireless communication that evolves into LTE and LTE-advanced via GSM, WCDMA, and HSPA, and synchronous wireless communication that evolves into CDMA, CDMA-2000, and UMB. The present invention should not be construed as limited to or limited to a specific wireless communication field and should be construed as including all technical fields to which the idea of the present invention can be applied.

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

In addition, in a system such as LTE LTE-A, a standard is configured by configuring uplink and downlink based on one carrier or a pair of carriers. The uplink and downlink transmit control information through control channels such as Physical Downlink Control CHannel (PDCCH), Physical Control Format Indicator CHannel (PCFICH), Physical Hybrid ARQ Indicator CHannel (PHICH), and Physical Uplink Control CHannel (PUCCH). A data channel is configured such as PDSCH (Physical Downlink Shared CHannel), PUSCH (Physical Uplink Shared CHannel) and the like to transmit data.

On the other hand, in the TDD, the downlink and uplink time points are divided. When various TDD configurations exist, these time points may also vary.

Table 1 below shows the TDD configuration. It can be seen that each TDD configuration has a different UL-DL subframe transmission timing.

In Table 1, a region denoted by D is a downlink and a region denoted by U is an uplink in a radio frame corresponding to 10 subframes. S is a special subframe, which is a downlink-to-uplink switch-point periodicity that is switched from downlink to uplink.

Further, in TDD, the downlink subframes associated with each uplink subframe according to the uplink-downlink configuration of Table 1 are as follows.

The uplink subframes associated with the downlink subframes vary according to the UL-DL Config. For example, in UL-DL Config 3, subframe 2 is an uplink subframe and is associated with a downlink subframe received before the 7,6,11th. The ACK / NACK information for the downlink subframe received before the 7,6th and 11th times may be transmitted in the uplink subframe number 2.

On the other hand, when using one of the TDD configuration, the UE may know in advance at which time is downlink and at what time. This information allows the terminal to predict and operate in advance.

Meanwhile, the TDD setting may be differently set for each band. However, there is a case in which one terminal uses carriers included in these differently configured bands.

1 is a diagram illustrating an interband CA environment according to an embodiment of the present specification. 1 is a diagram illustrating different TDD settings in a CA for flexible traffic loading handling.

110 shows that two component carriers are configured, CC1 111 is a carrier having a coverage of a signal transmitted from an eNB at high power, and CC2 112 is a carrier of a signal transmitted from an eNB at low power. It is a carrier having coverage. The CC1 111 and CC2 112 are included in different bands. The TDD configuration of the CC1 111 is 1 and is equal to 181, and the TDD configuration of the CC2 112 is 2 and is equal to 182. In addition, 115 is a hot-spot area | region, and is comprised by CA environment of CC1111 and CC2112. It is also possible to configure a CA for UEs in 110 degree CC2 coverage.

Here, the user terminal communicating with the hot spot of 115 has different TDD settings of CC1 111 and CC2 112, which means that some subframes may be configured differently for each component carrier in the uplink subframe and the downlink subframe. Can be.

In this case, depending on whether the transmission mode supported by the user terminal is half-duplex or full-duplex, the operation schemes differ for each subframe.

Different TDD UL-DL configurations are required on inter-band CAs to avoid interference issues with other co-existence TDD systems (eg TD-SCDMA, Mobile WiMAX, etc.) in the same band. do.

UL subframes on a low frequency band follow many TDD UL-DL configurations, and on the high frequency band, a TDD UL-DL configuration having many DL subframes can be derived. This configuration is helpful for coverage enhancement, and can also affect peak throughput.

2 is a diagram illustrating CA between bands in which different TDD settings are made according to an embodiment of the present specification.

FIG. 2 shows different TDD UL-DL configurations on inter-band between interbands that may be used for traffic adaptation.

Referring to FIG. 2 in more detail, the band A 210 and the band B 220 are set in the TDD so as not to be the same or collide with each other. Accordingly, the component carrier a of the band A 210 operates in the LTE scheme, TDD configuration # 1, and the component carrier b operates in the LTE-A scheme, TDD configuration 1. The component carrier c of the band B 220 operates in the TDD configuration 2 in the LTE-A scheme. Meanwhile, the component carrier d of the band B 220 is operated by the TD-SCDMA scheme. In the same band, the same TDD UL-DL configuration is configured, or it is configured not to collide with each other like component carriers c and d.

In this case, the TDD configuration is different in the case of the UE having the component carriers b and c as CAs (inter-band CA with different UL-DL configurations). This may mute some subframes or simultaneously perform simultaneous transmission / reception (simultaneous Tx / Rx), as shown in FIG. 3, depending on whether the terminal is in a half-duplex transmission mode or a full-duplex transmission mode.

3 is a diagram illustrating an operation method for each subframe according to a transmission mode of a user terminal in the inter-band CA environment of FIGS. 1 and 2. CC1 is a PCell (Primary Cell) and CC2 is a SCell (Secondary Cell).

In FIG. 3, when the user terminal supports only the half-duplex transmission mode, only the uplink subframe of the PCell operates in subframes 3 and 8 of the radio frames, and the downlink subframe of the SCell does not operate. That is, subframes 3 and 8 of the SCell operate as muted subframes. In 310, in the subframes in which the downlink and the uplink collide with each other (subframes 3 and 8), only the downlink or the uplink is operated in only one subframe.

On the other hand, 320, when the user terminal supports only the full-duplex transmission mode, in subframes 3 and 8 of the radio frame, both the uplink subframe of the PCell and the downlink subframe of the SCell are operated. That is, in the full-duplex transmission mode, since transmission and reception can be simultaneously implemented (Simultaneous Tx / Rx), uplink / downlink in each of the PCell and the SCell can be implemented. In 320, even in subframes in which the downlink and uplink collide with each other (subframes 3 and 8), the full-duplex transmission mode is operated, so that each downlink or uplink subframe is operated.

In the configuration of FIG. 3, in case of user terminals in a half-duplex transmission mode, a reference TDD UL-DL configuration may be used. That is, information on which direction (uplink or downlink) to select on a conflicting subframe may be selected (determined) through timing reference information. In this case, problems such as hybrid automatic retransmit reQuest (HARQ) timing and scheduling timing are raised due to different TDD UL-DL configurations.

는 다음과 같이 구성된다: c 번째 서빙 셀에 설정된 전송 모드가 하나의 전송 블록을 지원하거나 스파샬 HARQ-ACK 번들링(spatial HARQ-ACK bundling)이 적용되는 경우에는

이고, 다른 경우에는

이다. 여기에서

는 단말이 c 번째 서빙 셀을 위한 HARQ-ACK 비트를 피드백하기 위해 요구하는 하향링크 서브프레임의 개수이다. For TDD, when PUCCH format 3 is configured for transmission of HARQ-ACK, HARQ-ACK feedback bit for c-th serving cell set by RRC

Is configured as follows: When a transmission mode configured for a c-th serving cell supports one transport block or when spatial HARQ-ACK bundling is applied,

, In other cases

to be. From here

Is the number of downlink subframes required by the UE to feed back HARQ-ACK bits for the c-th serving cell.

이다. 다른 경우,

이다.When the UE transmits on the PUCCH, M is the number of elements of the set K related to the subframe n in Table 2, and the set K of the configuration 0 and 5 of the normal downlink CP or configuration 0 and 4 of the extended downlink CP If you don't include special subframes,

to be. In other cases,

to be.

으로 가정한다. 다른 경우,

으로 가정한다. 단말이 서브프레임 n-k(k∈K)에서 PDSCH 또는 하향링크 SPS 릴리스를 지시하는 PDCCH를 수신하지 않은 경우, 단말은 PUSCH를 통해 HARQ-ACK를 전송하지 않을 것이다.For PUSCH transmissions where the TDD UL-DL configuration is 0 or not adjusted based on the detected PDCCH in DCI format 0/4, M is the number of elements of set K related to subframe n in Table 2 above, where set K is If the configuration does not include special subframes of configuration 0 and 5 of the normal downlink CP or configuration 0 and 4 of the extended downlink CP,

Assume In other cases,

Assume If the UE does not receive the PDCCH indicating the PDSCH or the downlink SPS release in the subframe nk (k∈K), the UE will not transmit the HARQ-ACK on the PUSCH.

으로 가정한다.

는 상향링크 그랜트의 DAI(Downlink Assignment Index) 필드를 통해 전달되는 값으로서, 특정 상향링크 서브프레임에 관련된 하향링크 서브프레임 중 하향링크 데이터 전송이 할당된 서브프레임의 수를 나타내기 위한 인덱스이다. k∈K이고

이고, 단말이 서브프레임 n-k에서 PDSCH 또는 하향링크 SPS 릴리스를 지시하는 PDCCH를 수신하지 않은 경우, 단말은 PUSCH를 통해 HARQ-ACK를 전송하지 않을 것이다.
For PUSCH transmission in which the TDD UL-DL configuration is {1, 2, 3, 4, 6} and is adjusted based on the detected PDCCH of DCI format 0/4, the UE

Assume

A value transmitted through a downlink assignment index (DAI) field of an uplink grant is an index for indicating the number of subframes to which downlink data transmission is allocated among downlink subframes related to a specific uplink subframe. k∈K

If the UE does not receive the PDCCH indicating the PDSCH or the downlink SPS release in the subframe nk, the UE will not transmit the HARQ-ACK through the PUSCH.

으로 가정한다. 여기에서 U는 설정된 서빙 셀 중에서 U_c의 값 중 최대값을 나타내고, U_c는 c 번째 서빙 셀의 서브프레임 n-k(k∈K)에서 수신된 PDSCH 또는 하향링크 SPS 릴리스를 지시하는 PDCCH의 전체 개수이다. k∈K이고

이고, 단말이 서브프레임 n-k에서 PDSCH 또는 하향링크 SPS 릴리스를 지시하는 PDCCH를 수신하지 않은 경우, 단말은 PUSCH를 통해 HARQ-ACK를 전송하지 않을 것이다.For PUSCH transmission in which the TDD UL-DL configuration is 5 and is adjusted based on the detected PDCCH of DCI format 0/4, the UE

Assume Where U represents the maximum value of the values of U _c from the serving cell set, U _c is the total number of the PDSCH or PDCCH indicating a DL SPS release received in subframe nk (k∈K) of the first serving cell c to be. k∈K

If the UE does not receive the PDCCH indicating the PDSCH or the downlink SPS release in the subframe nk, the UE will not transmit the HARQ-ACK through the PUSCH.

을 통해서

값을 결정한다. TDD UL-DL 설정 0에서는 DAI(Downlink Assignment Field)가 없기 때문에, 이때 기지국은

값을 단말에게 지시할 수 없다. 따라서, 두 서빙 셀(PCell 및 SCell) 모두

로 결정된다.As an example, FIG. 4 illustrates a case where the TDD UL-DL configuration of the PCell and the SCell is zero. If the TDD UL-DL setting is 0

Through

Determine the value. In the TDD UL-DL configuration 0, since there is no downlink assignment field (DAI), the base station

The value cannot be indicated to the terminal. Thus, both serving cells (PCell and SCell)

.

을 통해서

값을 결정한다. 도 5의 경우 기지국은

값을 단말로 지시한다. 따라서, 두 서빙셀(PCell 및 SCell) 모두

=4로 결정된다. As another example, FIG. 5 illustrates a case where the TDD UL-DL configuration of the PCell and the SCell is two. When the TDD UL-DL configuration is {1, 2, 3, 4, 6} and when the PUSCH transmission is coordinated by the PDCCH

Through

Determine the value. In the case of Figure 5 the base station

Indicate the value to the terminal. Therefore, both serving cells (PCell and SCell)

= 4 is determined.

을 통해서

값을 결정한다. 여기에서 기지국은

값을 단말로 지시한다. PCell에 대해 U_p=6이고, SCell에 대해 U_s=2이므로, U=6으로 결정된다. 따라서,

로 결정된다.
As another example, FIG. 6 illustrates a case where the TDD UL-DL configuration of the PCell and the SCell is five. If the TDD UL-DL setting is 5

Through

Determine the value. Where the base station is

Indicate the value to the terminal. Since U _p = 6 for the PCell and U _s = 2 for the SCell, U = 6 is determined. therefore,

.

As described above, the number of HARQ-ACK feedback bits transmitted on the PUSCH is adjusted by whether the timing reference setting is 0, {1, 2, 3, 4, 6}, or 5, and the corresponding PUSCH transmission is adjusted by a PDCCH (UL grant). It depends on whether or not. However, as described above with reference to FIG. 2, when timing reference settings of a plurality of serving cells are different from each other, the number of HARQ-ACK feedback bits may be determined by a method different from that described above. More specifically, (1) when one serving cell is timing reference configuration 5 and the other serving cell is not 5, (2) when one serving cell has a timing reference configuration of 0 and the other serving cell is not 0, The number of HARQ-ACK feedback bits may be determined differently than described above. Additionally, (3) the number of HARQ-ACK feedback bits considering PDSCHs on the SCell that cannot be cross-carrier scheduling may be determined differently from the above.

For (1) and (2), in case of self-scheduling, the HARQ-ACK transmission method is set in the PUCCH format 3, and the uplink grant in an uplink subframe in which HARQ-ACK is to be transmitted It is assumed that there is a PUSCH transmission adjusted by a UL grant, and the corresponding UE is in an inter-band CA environment having a different TDD configuration.

For (3), in case of cross-carrier scheduling, a ULQ transmission method is set in a PUCCH format 3 and a UL grant is performed in an uplink subframe in which HARQ-ACK should be transmitted. It is assumed that the UE is in an inter-band CA environment having a different TDD configuration as a case in which there is a PUSCH transmission or a PUCCH transmission.

1.When timing reference setting # 5 is set in one serving cell

의 식을 이용하여 서빙 셀(c)을 위한 HARQ-ACK 비트를 피드백하기 위해 요구하는 하향링크 서브프레임의 개수(

), 또는 HARQ-ACK 비트 수를 결정할 수 있다. 여기에서 U는 설정된 서빙 셀 중에서 U_c의 값 중 최대값을 나타내고, U_c는 c 번째 서빙 셀의 서브프레임 n-k(k∈K)에서 단말에게 수신된 PDSCH 또는 하향링크 SPS 릴리스를 지시하는 PDCCH의 전체 개수이다.In the case of the timing reference setting 5, as described above,

The number of downlink subframes required for feeding back the HARQ-ACK bit for the serving cell (c) using

), Or the number of HARQ-ACK bits. Where U represents the maximum value of the values of U _c from the serving cell set, U _c is the PDCCH indicating the PDSCH or the DL SPS release reception to the terminal in subframe nk (k∈K) of the first serving cell c The total number.

값은 모든 서빙 셀의 하향링크 서브프레임 상황을 고려해서 기지국이 단말로 지시하는 값으로서, 서빙 셀들의 타이밍 레퍼런스 설정이 같다면 문제가 발생하지 않지만, 서빙 셀들의 타이밍 레퍼런스 설정이 서로 다르게 조합된다면 문제가 발생할 수 있다.However, this method cannot be applied when the timing reference settings are different between cells. because,

The value is a value indicated by the base station to the terminal in consideration of downlink subframe conditions of all serving cells. If the timing reference settings of the serving cells are the same, no problem occurs, but if the timing reference settings of the serving cells are combined differently, May occur.

인 경우

로 결정되고, 다른 경우

로 결정될 수 있다.In one embodiment, for serving cell c with timing reference setting 5,

If

Determined to be different

. ≪ / RTI >

인 경우에는 스케줄링된 정도(

)를 기반으로 In other words,

If is a scheduled degree (

Based on

값을 결정할 수 있다. 하지만 그 이외의 경우에는 타이밍 레퍼런스 설정 5와 다른 타이밍 레퍼런스 설정이

값을 공유해서 사용할 수 없기 때문에

를 기반으로

의 값을 결정한다. 즉, 타이밍 레퍼런스 설정 5의 M_c 값인 9가

의 값으로 결정된다.

The value can be determined. However, in other cases, timing reference settings other than timing reference setting 5

Because the value cannot be shared

Based on

Determine the value of. That is, the timing of the reference set value _c 5 M 9

As shown in FIG.

FIG. 7 illustrates a TDD CA environment when the timing reference setting of the PCell is 5 and the timing reference setting of the SCell is 2. In the example of FIG. 7, six downlink subframes are scheduled in the PCell and two downlink subframes are scheduled in the SCell.

값을 지시한다. 도 7에서 PCell에서의 U_c(U_p)의 값은 6이므로

의 관계가 성립하지 않는다. 따라서,

를 기반으로

의 값이 결정되고,

로 결정된다. 이는 HARQ-ACK 보고에서 몇 개의 HARQ-ACK 비트들이 PUSCH 상에서 전송될 수 있는지에 대한 지시자로 쓰일 수 있다. 한편, SCell의

의 값은

의 관계식을 기반으로 결정될 것이고, 도 7의 예에서는 2가 될 것이다.The base station according to the scheduling of the PCell

Indicates a value. In FIG. 7, the value of U _c (U _p ) in the PCell is 6

The relationship does not hold. therefore,

Based on

Is determined,

. This may be used as an indicator of how many HARQ-ACK bits can be transmitted on the PUSCH in the HARQ-ACK report. Meanwhile, SCell's

The value of

It will be determined based on the relation of, and will be 2 in the example of FIG.

8 illustrates a TDD CA environment when the timing reference setting of the PCell is 5 and the timing reference setting of the SCell is 2. In the example of FIG. 8, two downlink subframes are scheduled in the PCell and three downlink subframes are scheduled in the SCell.

값을 지시한다. 도 8에서 PCell에서의 U_c(U_p)의 값은 3이므로

의 관계가 성립한다. 따라서,

를 기반으로

의 값이 결정되고,

=3으로 결정된다. 이는 HARQ-ACK 보고에서 몇 개의 HARQ-ACK 비트들이 PUSCH 상에서 전송될 수 있는지에 대한 지시자로 쓰일 수 있다. 한편, SCell의

의 값은

의 관계식을 기반으로 결정될 것이고, 도 8의 예에서는 3이 될 것이다.
The base station according to the scheduling of the PCell

Indicates a value. In FIG. 8, the value of U _c (U _p ) in the PCell is 3

. therefore,

Based on

Is determined,

Is determined by = 3. This may be used as an indicator of how many HARQ-ACK bits can be transmitted on the PUSCH in the HARQ-ACK report. Meanwhile, SCell's

The value of

It will be determined based on the relation of, and will be 3 in the example of FIG. 8.

2. One serving  In the cell TDD UL - DL  If setting # 0 is set

의 값을 지시하지 않는다. 다른 서빙 셀에서 타이밍 레퍼런스 설정이 0이 아닌 경우,

의 값이 지시되지 않았기 때문에 서빙 셀에서의 HARQ-ACK 비트를 피드백하기 위해 요구하는 하향링크 서브프레임의 개수(

), 또는 HARQ-ACK 비트의 수를 결정하는 것이 어려울 수 있다.If the timing reference configuration is 0 in one serving cell, as described above, the DAI field is not set and the base station is connected to the terminal.

It does not indicate the value of. If the timing reference setting is not 0 in another serving cell,

The number of downlink subframes required for feeding back the HARQ-ACK bits in the serving cell since

), Or it may be difficult to determine the number of HARQ-ACK bits.

In one embodiment, in a CA environment where different TDD UL-DL configurations are applied, the DAI field in the uplink grant is activated for the serving cell with timing reference configuration 0. The activated DAI field will be supported to determine the number of HARQ-ACK bits of the PUSCH adjusted by the uplink grant.

That is, for a serving cell having a timing reference configuration 0 and another serving cell in which carrier aggregation is performed, the HARQ-ACK report of another serving cell may be supported by activating a DAI field in an uplink grant transmitted from the serving cell having the timing reference configuration 0. Can be.

As an example, FIG. 9 illustrates a TDD CA environment when the timing reference setting of the PCell is 0 and the timing reference setting of the SCell is 2. In the example of FIG. 9, one downlink subframe is scheduled in the PCell and two downlink subframes are scheduled in the SCell.

의 값을 결정할 수 있도록 한다. 기지국은 단말로

=2의 값을 전달하고, PCell의 경우

의 관계식에 의해

=1로 결정되고, SCell의 경우

의 관계식에 의해

=2로 결정될 수 있다.In this case, the DAI field is activated even in an uplink grant transmitted on the PCell having the timing reference configuration 0, and the base station instructs the UE to transmit downlink scheduling information on the SCell.

Allows you to determine the value of. Base station to the terminal

Pass a value of = 2, and for PCell

By the relational expression of

Determined to be = 1, for SCell

By the relational expression of

Can be determined as = 2.

3. Carrier Cross-carrier scheduling PUCCH  Format 3 is set

의 값은

의 관계식을 기반으로 결정될 수 있다. 여기에서, M_c는 상기 표 2에서 서빙셀(c)의 서브프레임 n에 관련된 셋 K_c의 원소의 개수이고, N_c는 셋 K_c에서 반송파간 스케줄링에 의해 스케줄링 되는 하향링크 서브프레임의 개수이다. 즉, 스케쥴링 서빙셀이 UL 서브프레임이고 스케쥴링되는 c-th 서빙셀은 DL 서브프레임인 경우인 c-th 서빙셀의 DL 서브프레임의 수이다.In case that a UE configured with PUCCH format 3 is configured as a method of intercarrier scheduling and HARQ-ACK transmission, the HARQ-ACK is transmitted on a PUSCH or a PUCCH that is not adjusted by an uplink grant in a specific uplink subframe.

The value of

It can be determined based on the relationship of. Here, M _c is the number of elements of set K _c related to subframe n of the serving cell (c) in Table 2, and N _c is the number of downlink subframes scheduled by intercarrier scheduling in set K _c . to be. That is, the number of DL subframes of the c-th serving cell when the scheduling serving cell is a UL subframe and the scheduled c-th serving cell is a DL subframe.

In this case, the UE can avoid unnecessary HARQ-ACK feedback through the above operation.

10 illustrates a HARQ-ACK transmission method according to an embodiment. The method of FIG. 10 is applied in a CA environment in which different TDD UL-DL configurations are applied between cells.

Referring to FIG. 10, the base station transmits RRC signaling to the terminal (S1010). The information transmitted through the RRC signaling may be configured to add or remove a secondary cell (SCell or Secondary Component Carrier), PUCCH format 3, TDD UL-DL configuration at each serving cell in case of a plurality of serving cells, and self-scheduling. Alternatively, the information may include information such as intercarrier scheduling. The TDD UL-DL configuration in each serving cell may be different.

Upon receiving the RRC signaling, the UE determines PDSCH HARQ timing configuration for the PCell and the SCell according to the TDD UL-DL configuration of the configured PCell and the SCell (S1020).

The base station transmits an uplink grant for PUSCH transmission to the terminal (S1030).

Upon receiving the uplink grant, the UE determines the number of HARQ-ACK bits, maps the HARQ-ACK bits on the PUSCH, and prepares to transmit the HARQ-ACK (S1040).

에 기초하여 결정될 수 있다. If the TDD UL-DL configuration of the PCell and the SCell is 0, the number of HARQ-ACK bits is

It can be determined based on.

에 기초하여 결정될 수 있다.

는 S1030 단계에서 상향링크 그랜트 내의 DAI 필드를 통해 전달될 수 있다.If the TDD UL-DL configuration of the PCell and the SCell is {1, 2, 3, 4, 6}, the number of HARQ-ACK bits is

It can be determined based on.

In step S1030 may be delivered through the DAI field in the uplink grant.

에 기초하여 결정될 수 있다.When the TDD UL-DL configuration of the PCell and the SCell is 5, the number of HARQ-ACK bits is

It can be determined based on.

Meanwhile, the TDD UL-DL configuration of the PCell and the SCell may be different.

인 경우

에 기초하여 결정되고, 아닌 경우

에 기초하여 결정될 수 있다.If the timing reference setting of one serving cell is 5 and the timing reference setting of another serving cell is not 5, the number of HARQ-ACK bits of the serving cell with the TDD UL-DL configuration is 5

If

Determined based on, if not

It can be determined based on.

에 기초하여 결정될 수 있다. 이러한 경우, 타이밍 레퍼런스 설정이 0임에도 불구하고, S1030 단계에서 상향링크 그랜트 내의 DAI 필드가 설정될 수 있다.If the timing reference setting of one serving cell is 0 and the timing reference setting of the other serving cell is nonzero, the number of HARQ-ACK bits of the serving cell is

It can be determined based on. In this case, although the timing reference setting is 0, the DAI field in the uplink grant may be configured in step S1030.

The terminal transmits the HARQ-ACK for both the PCell and the SCell through the PUSCH in the uplink subframe configured to transmit the HARQ-ACK (S1050), and the base station receiving this decodes the HARQ-ACK information (S1060).

FIG. 11 is a diagram for describing operation S1040 in detail in the HARQ-ACK transmission method of FIG. 10.

Referring to FIG. 11, the UE determines whether the PCell and the SCell have different M values on the uplink subframe of the PCell to which HARQ-ACK is transmitted (S1110). If the PCell and the SCell have the same M value (NO in S1110), the UE determines the number of HARQ-ACK bits by applying an existing method (S1190).

In case of having different M values for the PCell and the SCell (YES in S1110), the UE determines whether there is a serving cell configured with timing reference configuration 0 or 5 among the serving cells configured for the UE or whether inter-carrier scheduling is applied. (S1120). If there is no serving cell to which the timing reference configuration 0 or 5 is set and intercarrier scheduling is not applied (NO in S1120), the UE determines the number of HARQ-ACK bits by using an existing agreed method (S1190).

When there is a serving cell configured with timing reference configuration 0 or 5 or when intercarrier scheduling is applied (YES in S1120), the UE determines whether PUSCH transmission is configured by an uplink grant in a corresponding uplink subframe. (S1130). If the PUSCH transmission is not configured by the uplink grant (NO in S1130), the UE determines the number of HARQ-ACK bits by applying an existing method (S1190).

If the PUSCH transmission is set by the uplink grant (YES in S1130), the UE determines the number of HARQ-ACK bits using the above-described method (S1140).

인 경우

에 기초하여 결정되고, 아닌 경우

에 기초하여 결정될 수 있다.More specifically, when the timing reference setting of one serving cell is 5 and the timing reference setting of another serving cell is not 5, the number of HARQ-ACK bits of the serving cell having the timing reference setting of 5 is

If

Determined based on, if not

It can be determined based on.

에 기초하여 결정될 수 있다. 이러한 경우, 타이밍 레퍼런스 설정이 0임에도 불구하고, 도 10의 S1030 단계에서 상향링크 그랜트 내의 DAI 필드가 설정될 수 있다.Or, if the timing reference setting of one serving cell is 0 and the timing reference setting of the other serving cell is not 0, the number of HARQ-ACK bits of the serving cell is

It can be determined based on. In this case, although the timing reference setting is 0, the DAI field in the uplink grant may be set in step S1030 of FIG. 10.

에 기초하여 결정될 수 있다.
Or, if intercarrier scheduling is applied, the number of HARQ-ACK bits of the serving cell is

It can be determined based on.

12 is a block diagram illustrating a configuration of a base station according to an embodiment.

Referring to FIG. 12, the base station 1200 includes a transmitter 1210, a receiver 1220, and a controller 1230.

를 단말로 전달할 수 있다. The transmitter 1110 transmits TDD UL-DL configuration information of the PCell and the SCell to the terminal, and transmits an uplink grant and / or data to the terminal in the corresponding downlink subframe of the PCell and the SCell. In addition, the transmitter 1210 through the DAI field of the uplink grant

Can be delivered to the terminal.

The receiver 1220 receives data including response information of data transmitted from the PCell and the SCell from the terminal through a PUSCH in a corresponding uplink subframe.

The controller 1230 decodes the response information HARQ-ACK of the data transmitted through the PUSCH according to a preset rule. For decoding, the controller 1130 may determine the number of bits of the HARQ-ACK.

에 기초하여 결정될 수 있다.If the TDD UL-DL configuration of the PCell and the SCell is 0, the number of HARQ-ACK bits is

It can be determined based on.

에 기초하여 결정될 수 있다.

는 S1030 단계에서 상향링크 그랜트 내의 DAI 필드를 통해 전달될 수 있다.If the TDD UL-DL configuration of the PCell and the SCell is {1, 2, 3, 4, 6}, the number of HARQ-ACK bits is

It can be determined based on.

In step S1030 may be delivered through the DAI field in the uplink grant.

에 기초하여 결정될 수 있다.When the TDD UL-DL configuration of the PCell and the SCell is 5, the number of HARQ-ACK bits is

It can be determined based on.

Meanwhile, the TDD UL-DL configuration of the PCell and the SCell may be different.

인 경우

에 기초하여 결정되고, 아닌 경우

에 기초하여 결정될 수 있다.If the timing reference setting of one serving cell is 5 and the timing reference setting of another serving cell is not 5, the number of HARQ-ACK bits of the serving cell with the timing reference setting 5 is

If

Determined based on, if not

It can be determined based on.

에 기초하여 결정될 수 있다.If the timing reference setting of one serving cell is 0 and the timing reference setting of the other serving cell is nonzero, the number of HARQ-ACK bits of the serving cell is

It can be determined based on.

에 기초하여 결정될 수 있다.When intercarrier scheduling is applied, the number of HARQ-ACK bits of the serving cell is

It can be determined based on.

13 is a block diagram showing a configuration of a terminal according to an embodiment.

Referring to FIG. 13, the terminal 1300 includes a receiver 1310, a controller 1320, and a transmitter 1330.

를 기지국으로부터 전달받을 수 있다.The receiver 1310 receives TDD UL-DL configuration information of the PCell and the SCell from the base station, and receives an uplink grant and / or data from the base station in a corresponding downlink subframe of the PCell and the SCell. In addition, the receiver 1310 through the DAI field of the uplink grant

Can be delivered from the base station.

The controller 1320 generates response information HARQ-ACK of data received through the receiver 1310 and calculates the number of bits of HARQ-ACK to be transmitted through the PUSCH.

에 기초하여 결정될 수 있다.If the TDD UL-DL configuration of the PCell and the SCell is 0, the number of HARQ-ACK bits is

It can be determined based on.

에 기초하여 결정될 수 있다.

는 S1030 단계에서 상향링크 그랜트 내의 DAI 필드를 통해 전달될 수 있다.If the TDD UL-DL configuration of the PCell and the SCell is {1, 2, 3, 4, 6}, the number of HARQ-ACK bits is

It can be determined based on.

In step S1030 may be delivered through the DAI field in the uplink grant.

에 기초하여 결정될 수 있다.When the TDD UL-DL configuration of the PCell and the SCell is 5, the number of HARQ-ACK bits is

It can be determined based on.

Meanwhile, the TDD UL-DL configuration of the PCell and the SCell may be different.

에 기초하여 결정되고, 아닌 경우

에 기초하여 결정될 수 있다.If the timing reference setting of one serving cell is 5 and the timing reference setting of another serving cell is not 5, the number of HARQ-ACK bits of the serving cell with the timing reference setting 5 is If

Determined based on, if not

It can be determined based on.

에 기초하여 결정될 수 있다.If the timing reference setting of one serving cell is 0 and the timing reference setting of the other serving cell is nonzero, the number of HARQ-ACK bits of the serving cell is

It can be determined based on.

에 기초하여 결정될 수 있다.When intercarrier scheduling is applied, the number of HARQ-ACK bits of the serving cell is

It can be determined based on.

The transmitter 1330 transmits the HARQ-ACK generated through the PUSCH.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be interpreted by the following claims, and all technical ideas within the scope equivalent thereto should be construed as being included in the scope of the present invention.

Claims (12)

A terminal connected to a base station that controls two or more bands having different time division duplex (TDD) settings,
Receiving TDD configuration information of a first serving cell and a second serving cell from the base station;
Receiving data from the base station in downlink subframes of the first and second serving cells; And
Transmitting response information about data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe,
When the TDD configuration of one serving cell of the first serving cell and the second serving cell is 5, the number of bits of response information for the serving cell having the TDD configuration of 5 is the uplink in the serving cell having the TDD configuration of 5. The number of downlink subframes (M _c ) related to the subframe or the number of subframes to which downlink data transmission is allocated among the related downlink subframes (

The response information transmission method of the received data in the interband TDD transmission method characterized in that it is determined based on.
The method of claim 1,
In a serving cell having the TDD configuration of 5, the number U _c of PDSCHs received through a downlink subframe related to the uplink subframe is

If less than the number of bits

Is determined based on, and U _c is

If larger, the number of bits is determined based on M _c . The response information transmission method of received data in the interband TDD transmission scheme.
A terminal connected to a base station that controls two or more bands having different time division duplex (TDD) settings,
Receiving TDD configuration information of a first serving cell and a second serving cell from the base station;
Receiving data from the base station in downlink subframes of the first and second serving cells; And
Transmitting response information about data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe,
When the TDD setting of one serving cell of the first serving cell and the second serving cell is 0, the number of bits of response information for the first serving cell and the second serving cell is 0 in the serving cell in which the TDD configuration is 0. The number of subframes to which downlink data transmission is allocated among downlink subframes related to the uplink subframe (

The response information transmission method of the received data in the interband TDD transmission method characterized in that it is determined based on.
A terminal connected to a base station that controls two or more bands having different time division duplex (TDD) settings,
A receiver for receiving TDD configuration information of a first serving cell and a second serving cell from the base station, and receiving data from the base station in downlink subframes of the first serving cell and the second serving cell;
A transmitter for transmitting response information about data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe; And
When the TDD configuration of one serving cell of the first serving cell and the second serving cell is 5, the number of bits of response information for the serving cell having the TDD configuration of 5 is the uplink in the serving cell having the TDD configuration of 5. The number of downlink subframes (M _c ) related to the subframe or the number of subframes to which downlink data transmission is allocated among the related downlink subframes (

Terminal comprising a control unit for determining based on).
5. The method of claim 4,
The control unit determines that the number of PDSCHs (U _c ) received through a downlink subframe associated with the uplink subframe in a serving cell having the TDD configuration of 5

If less than

Based on U _c ,

If greater than the number of bits is determined based on M _c terminal.
A terminal connected to a base station that controls two or more bands having different time division duplex (TDD) settings,
A receiver for receiving TDD configuration information of a first serving cell and a second serving cell from the base station, and receiving data from the base station in downlink subframes of the first serving cell and the second serving cell;
A transmitter for transmitting response information on data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe; And
When the TDD setting of one serving cell of the first serving cell and the second serving cell is 0, the number of bits of response information for the first serving cell and the second serving cell is 0 in the serving cell in which the TDD configuration is 0. The number of subframes to which downlink data transmission is allocated among downlink subframes related to the uplink subframe (

Terminal comprising a control unit for determining based on).
A base station for controlling two or more bands of different time division duplex (TDD) settings,
Transmitting TDD configuration information of a first serving cell and a second serving cell to a terminal;
Transmitting data to the terminal in downlink subframes of the first serving cell and the second serving cell; And
Receiving, from the terminal, response information about data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe,
When the TDD configuration of one serving cell of the first serving cell and the second serving cell is 5, the number of bits of response information for the serving cell having the TDD configuration of 5 is the uplink in the serving cell having the TDD configuration of 5. The number of downlink subframes (M _c ) related to the subframe or the number of subframes to which downlink data transmission is allocated among the related downlink subframes (

The response information receiving method of the received data in the interband TDD transmission method, characterized in that it is determined based on.
The method of claim 7, wherein
In a serving cell having the TDD configuration of 5, the number U _c of PDSCHs received through a downlink subframe related to the uplink subframe is

If less than the number of bits

Is determined based on, and U _c is

And if greater, the number of bits is determined based on M _c .
A base station for controlling two or more bands of different time division duplex (TDD) settings,
Transmitting TDD configuration information of a first serving cell and a second serving cell to a terminal;
Transmitting data to the terminal in downlink subframes of the first serving cell and the second serving cell; And
Receiving, from the terminal, response information about data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe,
When the TDD setting of one serving cell of the first serving cell and the second serving cell is 0, the number of bits of response information for the first serving cell and the second serving cell is 0 in the serving cell in which the TDD configuration is 0. The number of subframes to which downlink data transmission is allocated among downlink subframes related to the uplink subframe (

The response information receiving method of the received data in the interband TDD transmission method, characterized in that it is determined based on.
A base station for controlling two or more bands of different time division duplex (TDD) settings,
A transmitter for transmitting TDD configuration information of a first serving cell and a second serving cell to a terminal and transmitting data to the terminal in downlink subframes of the first serving cell and the second serving cell;
A receiver configured to receive response information from the terminal in response to data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe; And
A control unit for decoding the response information based on the number of bits of the response information,
When the TDD configuration of one serving cell of the first serving cell and the second serving cell is 5, the number of bits of response information for the serving cell having the TDD configuration of 5 is the uplink in the serving cell having the TDD configuration of 5. The number of downlink subframes (M _c ) related to the subframe or the number of subframes to which downlink data transmission is allocated among the related downlink subframes (

The base station, characterized in that determined based on).
11. The method of claim 10,
In a serving cell having the TDD configuration of 5, the number U _c of PDSCHs received through a downlink subframe related to the uplink subframe is

If less than the number of bits

Is determined based on, and U _c is

If greater, the number of bits is determined based on M _c .
A base station for controlling two or more bands of different time division duplex (TDD) settings,
A transmitter for transmitting TDD configuration information of a first serving cell and a second serving cell to a terminal and transmitting data from the base station to the terminal in downlink subframes of the first serving cell and the second serving cell;
A receiver configured to receive response information from the terminal in response to data received in downlink subframes of the first and second serving cells through a physical uplink shared channel (PUSCH) in an uplink subframe; And
A control unit for decoding the response information based on the number of bits of the response information,
When the TDD setting of one serving cell of the first serving cell and the second serving cell is 0, the number of bits of response information for the first serving cell and the second serving cell is 0 in the serving cell in which the TDD configuration is 0. The number of subframes to which downlink data transmission is allocated among downlink subframes related to the uplink subframe (

The base station, characterized in that determined based on).

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