WO2015194826A1 - Method and device for transmitting control information in carrier aggregation system - Google Patents

Abstract

The present disclosure relates to a communication technique and system that is the convergence of a 5G communication system and an IoT technology for supporting a higher data transmission rate following the 4G system. The present disclosure may be applied to intellectual services (e.g. smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail business, security and safety related services, etc.) based on the 5G communication technology and the IoT related technology. The present invention relates to a method and device for enabling uplink control information to be inserted into an uplink data channel and transmitted when multiple uplink control channel transmission and uplink data channel transmission occur in the same sub-frame in a case where a plurality of uplink carriers support uplink control channel transmission in a carrier aggregation system.

Description

Method and apparatus for transmitting control information in carrier aggregation system

The present invention relates to a cellular wireless communication system, and more particularly, to a method and apparatus for transmitting a control channel in a carrier integrated system.

In order to meet the increasing demand for wireless data traffic since the commercialization of 4G communication systems, efforts are being made to develop improved 5G communication systems or pre-5G communication systems. For this reason, a 5G communication system or a pre-5G communication system is called a system after a 4G network (Beyond 4G Network) or a system after an LTE system (Post LTE). In order to achieve high data rates, 5G communication systems are being considered for implementation in the ultra-high frequency (mmWave) band (eg, such as the 60 Gigabit (60 GHz) band). In order to mitigate the path loss of radio waves in the ultra-high frequency band and increase the propagation distance of radio waves, beamforming, massive array multiple input / output (FD-MIMO), and FD-MIMO are used in 5G communication systems. Array antenna, analog beam-forming, and large scale antenna techniques are discussed. In addition, in order to improve the network of the system, 5G communication systems have advanced small cells, advanced small cells, cloud radio access network (cloud RAN), ultra-dense network (ultra-dense network) , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation The development of such technology is being done. In addition, in 5G systems, Hybrid FSK and QAM Modulation (FQAM) and sliding window superposition coding (SWSC), Advanced Coding Modulation (ACM), and FBMC (Filter Bank Multi Carrier) and NOMA are advanced access technologies. (non orthogonal multiple access), and sparse code multiple access (SCMA) are being developed.

Meanwhile, the Internet is evolving from a human-centered connection network in which humans create and consume information, and an Internet of Things (IoT) network that exchanges and processes information between distributed components such as things. The Internet of Everything (IoE) technology, which combines big data processing technology through connection with cloud servers and the like, is emerging. In order to implement the IoT, technical elements such as sensing technology, wired / wireless communication and network infrastructure, service interface technology, and security technology are required, and recently, a sensor network for connection between things, a machine to machine , M2M), Machine Type Communication (MTC), etc. are being studied. In an IoT environment, intelligent Internet technology (IT) services can be provided that collect and analyze data generated from connected objects to create new value in human life. IoT is a field of smart home, smart building, smart city, smart car or connected car, smart grid, health care, smart home appliances, advanced medical services, etc. through convergence and complex of existing information technology (IT) technology and various industries. It can be applied to.

Accordingly, various attempts have been made to apply the 5G communication system to the IoT network. For example, technologies such as sensor network, machine to machine (M2M), machine type communication (MTC), and the like, are implemented by techniques such as beamforming, MIMO, and array antennas. It is. Application of cloud radio access network (cloud RAN) as the big data processing technology described above may be an example of convergence of 5G technology and IoT technology.

In general, mobile communication systems have been developed to provide voice services while guaranteeing user activity. However, mobile communication systems are gradually expanding not only voice but also data services, and now they have developed to the extent that they can provide high-speed data services. However, in the mobile communication system where a service is currently provided, a more advanced mobile communication system is required due to a shortage of resources and high-speed service demands of users.

The Long Term Evolution-Advanced (hereinafter referred to as LTE-A) system, developed from 3GPP (The 3rd Generation Partnership Project) based on the Long Term Evolution (LTE) system, is a high-speed packet based with a transmission rate of up to about 1 Gbps. It is a technology to implement communication. LTE-A supports a carrier aggregation system that can communicate with a base station using a plurality of carriers by extending the number of cells connected to the terminal, and all cells extended to the terminal are the same duplex. It has a structure. Therefore, every cell may have a frequency division duplex (FDD) structure or a time division duplex (TDD) structure. The TDD may be a static TDD structure in which a UL-DL configuration is maintained, or may be a dynamic TDD structure in which the UL-DL configuration is changed by system information, an upper signal, or a downlink common control channel.

If one cell controlled by the base station has an FDD structure and one frequency band is added, the one frequency band is easy to apply the TDD structure. This is because two different frequency bands are required for downlink (DL) and uplink (UL) to operate FDD. Therefore, when the doubled structure is different between cells due to the addition of a limited frequency band or other reasons as described above, a method for transmitting a control channel for data transmitted from a plurality of cells is required.

In LTE-A, the number of cells connected by the UE is extended, but the feedback generated in each cell is transmitted only to the primary cell (Primary cell or Pcell, hereinafter called P cell). In detail, when a terminal capable of supporting only one carrier in uplink and a terminal capable of supporting multiple carriers in uplink coexist, a terminal capable of supporting only one uplink carrier may use only one uplink carrier. Uplink control channel can be transmitted. Therefore, the number of terminals capable of supporting a large number of carriers in the base station is small, and in terms of defining a standard for supporting all the terminals, a method of transmitting only a Pcell for feedback generated in downlink of each cell is adopted. In LTE-A, when uplink control channel transmission and uplink data channel transmission occur in the same subframe, uplink control information transmitted on the uplink control channel is embedded in the uplink data channel and transmitted.

However, when the number of UEs supporting a plurality of uplink carriers increases, it is necessary to support uplink control channel transmission on a plurality of uplink carriers. When overlapping, a technique for inserting and transmitting uplink control information transmitted in a plurality of uplink control channels into an uplink data channel is required.

The present invention has been proposed to solve the above-described problem. According to an embodiment of the present invention, when a plurality of uplink carriers supports uplink control channel transmission in a carrier aggregation system, a plurality of uplink control channel transmissions and uplinks It is an object of the present invention to provide a method and apparatus for transmitting uplink control information by inserting uplink control information into an uplink data channel when data channel transmission occurs in the same subframe.

In order to solve the above problems, the method for transmitting uplink control information of a terminal in a wireless communication system using carrier aggregation according to the present invention includes an uplink control channel transmitted in a first cell and an uplink data channel transmitted in a second cell. A determination step of determining whether the same uplink control channel is transmitted in the same subframe, and when the uplink control channel and the uplink data channel are transmitted in the same same subframe, first uplink control information is inserted into the uplink data channel And transmitting, wherein the first cell and the second cell are the same or different cells.

In addition, the method of receiving uplink control information of a base station in a wireless communication system using carrier aggregation includes whether an uplink control channel received in a first cell and an uplink control channel received in a second cell are received in any same subframe. A determination step of determining, when the uplink control channel and the uplink data channel are received in the same subframe, extracting first uplink control information from the uplink data channel; And the second cell are the same or different cells.

In addition, in a wireless communication system using a carrier integrated system, a terminal for transmitting uplink control information includes a transceiver for transmitting and receiving a signal with a base station, an uplink control channel transmitted from a first cell, and an uplink transmitted from a second cell. It is determined whether a data channel is transmitted in any same subframe, and when the uplink control channel and the uplink data channel are transmitted in the same subframe, first uplink control information is transmitted to the uplink data channel. Insert and transmit, characterized in that it comprises a control unit characterized in that the first cell and the second cell is the same or different cells.

In addition, in a wireless communication system using a carrier integrated system, a base station receiving uplink control information includes a transceiver for transmitting and receiving a signal to and from a terminal, and an uplink control channel received in a first cell and an uplink received in a second cell. It is determined whether a data channel is received in any same subframe, and when the uplink control channel and the uplink data channel are received in the same subframe, first uplink control information is transmitted in the uplink data channel. And extracting the first cell and the second cell from the same or different cell.

According to an embodiment of the present invention, the terminal and the base station may transmit and receive a control channel necessary for data scheduling.

According to an embodiment of the present invention, when uplink control channel and uplink data channel transmission overlap when supporting uplink control channel transmission on a plurality of uplink carriers, the uplink control information is inserted into the uplink data channel and transmitted. Accordingly, uplink control information can be transmitted even at a low terminal transmission power, and the base station can increase the probability of receiving the uplink control information without error.

1A illustrates a communication system to which some embodiments of the present invention are applied.

1B illustrates a communication system to which some embodiments of the present invention are applied.

2A illustrates an embodiment of cells mapped to one conventional uplink control channel.

FIG. 2B illustrates a first embodiment of cells mapped to a plurality of uplink control channels proposed in the present invention.

2C illustrates a second embodiment of cells mapped to a plurality of uplink control channels proposed in the present invention.

2D illustrates a third embodiment of cells mapped to a plurality of uplink control channels proposed in the present invention.

FIG. 3A illustrates a case in which simultaneous transmission of an uplink control channel and an uplink data channel is not configured for a UE in a cell in which an uplink control channel is proposed according to the present invention and an uplink data channel overlaps with an uplink data channel. Is a flowchart of a base station for control information insertion.

FIG. 3B is a flowchart of a terminal in the case of FIG. 3A.

4A shows a case in which simultaneous transmission of an uplink control channel and an uplink data channel is configured for a terminal in a cell in which an uplink control channel is proposed according to the present invention and an uplink control channel overlaps with an uplink data channel. Is a flowchart of a base station for control information insertion.

FIG. 4B is a flowchart of a terminal in the case of FIG. 4A.

FIG. 5A illustrates a case in which a simultaneous transmission of an uplink control channel and an uplink data channel is configured for a UE only in a Pcell and an uplink control channel overlaps with an uplink data channel in a cell in which an uplink control channel is proposed according to the present invention. FIG. 1 is a flowchart of a base station for inserting control information into an uplink data channel in group 1. FIG.

FIG. 5B is a flowchart of a terminal in the case of FIG. 5A.

FIG. 6A illustrates a cell group when simultaneous transmission of an uplink control channel and an uplink data channel is configured only in a PC cell to a user equipment and the uplink control channel overlaps with an uplink data channel. Is a flowchart of a base station for inserting control information into an uplink data channel transmitted irrespective of.

FIG. 6B is a flowchart of a terminal in the case of FIG. 6A.

7 is a block diagram of a base station according to embodiments of the present invention.

8 is a block diagram of a terminal according to embodiments of the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of related well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

In the following description, embodiments of the present invention will be described using the LTE system and the LTE-A system as examples, but the present invention can be applied to other communication systems to which base station scheduling is applied.

Orthogonal Frequency Division Multiplexing (OFDM) transmission is a method of transmitting data using a multi-carrier, in which symbol strings input in serial are parallelized, and each of them is orthogonal to each other. It is a type of multi-carrier modulation (Multi Carrier Modulation) scheme that modulates and transmits a plurality of multicarriers, that is, a plurality of subcarrier channels.

In the OFDM scheme, a modulated signal is located in a two-dimensional resource composed of time and frequency. Resources on the time axis are divided into different OFDM symbols and they are orthogonal to each other. Resources on the frequency axis are divided into different subcarriers and they are also orthogonal to each other. That is, in the OFDM scheme, if a specific OFDM symbol is designated on the time axis and a specific subcarrier is designated on the frequency axis, one minimum unit resource may be indicated, which is called a resource element (RE). Since different REs have orthogonality to each other even though they pass through a frequency selective channel, signals transmitted through different REs may be received at a receiving side without causing mutual interference.

A physical channel is a channel of a physical layer that transmits modulation symbols that modulate one or more encoded bit streams. In Orthogonal Frequency Division Multiple Access (OFDMA) systems, a plurality of physical channels are configured and transmitted according to the purpose of the information string to be transmitted or the receiver. The transmitter and the receiver must promise in advance to which RE to arrange and transmit one physical channel. The rule is called mapping.

In an OFDM communication system, a downlink bandwidth consists of a plurality of resource blocks (hereinafter referred to as RBs), and each physical resource block (PRB) refers to a frequency axis. 12 subcarriers arranged accordingly and 14 or 12 OFDM symbols arranged along the time axis. Here, the PRB becomes a basic unit of resource allocation.

A reference signal (RS) is a signal transmitted from a base station. The terminal estimates the channel using the RS. The LTE communication system includes a common reference signal (CRS: Common Reference Signal, hereinafter referred to as CRS) and a demodulation reference signal (DMRS: DeModulation Reference Signal, hereinafter referred to as DMRS). DMRS is a kind of dedicated reference signal.

The CRS is a reference signal transmitted over the entire downlink band. All terminals can receive the CRS. The CRS is used for channel estimation, configuration of feedback information of a terminal, or demodulation of a control channel and a data channel. DMRS is also a reference signal transmitted over the entire downlink band. DMRS is used for data channel demodulation and channel estimation of a specific terminal. Unlike CRS, DMRS is not used for configuring feedback information. Accordingly, the DMRS is transmitted through a PRB resource to be scheduled by the terminal.

A subframe on the time axis consists of two slots of 0.5 msec length, namely a first slot and a second slot. A physical downlink control channel (PDCCH) region, which is a control channel region, and an enhanced PDCCH (ePDCCH) region, which is a data channel region, are divided and transmitted on a time axis. This is to quickly receive and demodulate the control channel signal. In addition, the PDCCH region is located over the entire downlink band, in which one control channel is divided into control channels of a small unit and distributed in the entire downlink band.

The uplink is largely divided into a physical uplink control channel (PUCCH) and a physical uplink data channel (PUSCH). When the uplink data channel is not scheduled, other feedback information such as a response to the downlink data channel (HARQ? ACK feedback) and channel information is transmitted through the control channel. When the uplink data channel is scheduled, other feedback information such as a response to the downlink data channel (HARQ-ACK feedback) and channel information is transmitted through the data channel.

1A and 1B illustrate a communication system to which some embodiments of the present invention are applied. 1A, cell 1 102 and cell 2 103 coexist in one base station 101 in a network. The cell 1 may be a TDD cell or an FDD cell. In addition, cell 2 may be a TDD cell or an FDD cell. The terminal 104 transmits data to and receives data from the base station through the cell 1 102 and the cell 2 103. The terminal 104 may transmit an uplink control channel through a plurality of uplink carriers according to the capability of the corresponding terminal, or may transmit an uplink control channel through one uplink carrier. When the terminal 104 has a capability of transmitting an uplink control channel through a plurality of uplink carriers, the terminal performs uplink transmission through the cell 1 102 and the cell 2 103. When the terminal 104 has the capability of transmitting an uplink control channel through one uplink carrier, the terminal 104 performs uplink transmission only through the Pcell. When the cell 1 102 is a PC cell, the terminal 104 performs uplink transmission only through the cell 1 102. In addition, when the cell 2 103 is a P cell, the terminal 104 performs uplink transmission only through the cell 2 103.

Referring to FIG. 1B, a macro base station 111 for wide coverage and a pico base station 112 for increasing data throughput coexist in a network. In the case of FIG. 1B, the macro base station 111 may use the FDD scheme in the cell 2 116, and the pico base station 112 may communicate with the terminal 114 using the TDD scheme in the cell 1 115. . Alternatively, the macro base station 111 may use the TDD scheme in the cell 2 116, and the pico base station 112 may communicate with the terminal 114 using the FDD scheme in the cell 1 115. The terminal 114 capable of transmitting an uplink control channel through a plurality of uplink carriers may transmit an uplink control channel through a plurality of uplink carriers, or may transmit an uplink control channel through one uplink carrier. have. When the terminal 114 transmits an uplink control channel through a plurality of uplink carriers, the terminal performs uplink transmission through the pico base station 112 in the TDD scheme and the macro base station 111 in the FDD scheme. When the terminal 114 transmits an uplink control channel through one uplink carrier, when the macro base station is a Pcell, the terminal performs uplink transmission only through the macro base station 111. In addition, when the pico base station is a Pcell, the terminal performs uplink transmission only through the pico base station 112. In this case, it is assumed that the macro base station 111 and the pico base station 112 have an ideal backhaul network. Therefore, a high speed between the base station X2 communication 113 is possible, even if the uplink signal of the terminal 114 is transmitted only to the macro base station 111 or the pico base station 112, the terminal 114 through the X2 communication 113 It is possible to receive control information related to the Pcell base station in real time.

Although the scheme proposed in some embodiments of the present invention can be applied to both the system of FIG. 1A and the system of FIG. 1B, the present invention will mainly be described assuming the system of FIG. 1A.

Next, the embodiments proposed by the present invention for the cells capable of performing HARQ-ACK feedback and channel information reporting in the uplink control channel will be described with reference to FIG. 2.

FIG. 2A illustrates an embodiment of cells mapped to one conventional uplink control channel. In the prior art, carrier aggregation in LTE-A is possible up to 5 cells, one cell capable of transmitting uplink control information is called a P cell, and the other cells are called secondary cells (Secondary cells or Scells). The SCell has an SCellIndex. HARQ-ACK feedback and channel information for each of the five cells are always transmitted only through the PUCCH in the Pcell. A cell (P cell) indicated by hatched lines in FIG. 2A means a cell that transmits a PUCCH. For example, HARQ-ACK feedback on downlink data transmitted in Scell1 is transmitted through the PUCCH of the Pcell, and channel information measured in the Scell1 is transmitted through the PUCCH of the Pcell according to the reporting period configured in the Scell1. Is sent. Accordingly, the cells mapped to perform HARQ-ACK feedback and channel information reporting through the PUCCH in the Pcell include 5 cells (Pcell, Scell1, Scell2, Scell3, Scell, etc.). 4, S cell 5) can be seen.

 FIG. 2B illustrates a first embodiment of cells mapped to a plurality of uplink control channels proposed in the present invention. In the first embodiment of FIG. 2B, up to five cells can be aggregated as in the carrier aggregation in the conventional LTE-A, but a separate group of cell groups capable of transmitting HARQ-ACK feedback and channel information through the PUCCH Divide by. Cells (Pcell, Scell1) indicated by hatching in FIG. 2B mean cells that transmit PUCCH. Cell group 1 201 is a set of cells to be mapped to enable HARQ-ACK feedback and channel information reporting on a PUCCH in a PCell. In the first embodiment of FIG. 2B, cell group 1 201 includes a total of three cells, P cell, S cell 2, and S cell 3. Cell group 2 202 is a set of cells to be mapped to enable HARQ-ACK feedback and channel information reporting on PUCCH in SCell1. In the first embodiment of FIG. 2B, the cell group 2 202 includes two cells, S cell 1 and S cell 4. Accordingly, it can be seen that the cells mapped to perform HARQ-ACK feedback and channel information reporting through the PUCCH in the Pcell are Pcells, Scell2, and Scell3 included in the cell group 1 201, and S The cells mapped to perform HARQ-ACK feedback and channel information reporting through PUCCH in Cell 1 may be Scell1 and Scell4 included in cell group 2 202.

2C illustrates a second embodiment of cells mapped to a plurality of uplink control channels proposed in the present invention. In the second embodiment of FIG. 2C, up to five cells can be aggregated as in the carrier aggregation in the conventional LTE-A, but a separate group of cell groups capable of transmitting HARQ-ACK feedback and channel information through the PUCCH Divide by. Cells (Pcell, Scell4) indicated by hatching in FIG. 2C mean cells that transmit PUCCH. Cell group 1 211 is a set of cells to be mapped to enable HARQ-ACK feedback and channel information reporting on a PUCCH in a PCell. In the second embodiment of FIG. 2C, the cell group 1 211 includes a total of four cells, P cell, S cell 1, S cell 2, and S cell 3. Cell group 2 212 is a set of cells to be mapped to enable HARQ-ACK feedback and channel information reporting through PUCCH in SCell4. In the second embodiment of FIG. 2C, only cell S 2 is included in cell group 2 212. Accordingly, it can be seen that the cells mapped to perform HARQ-ACK feedback and channel information reporting through the PUCCH in the Pcell are Pcells, Scell1, Scell2, and Scell3 included in the cell group 1211. In addition, the cells mapped to perform HARQ-ACK feedback and channel information reporting through the PUCCH in Scell4 may be understood to be Scell4 included in the cell group 2212.

2D illustrates a third embodiment of cells mapped to a plurality of uplink control channels proposed in the present invention. In the third embodiment of FIG. 2D, up to five cells can be aggregated as in the carrier aggregation in the conventional LTE-A, but a separate group of cell groups capable of transmitting HARQ-ACK feedback and channel information through the PUCCH Divide by. Cells (Pcell and Scell2) indicated by hatching in FIG. 2D mean cells that transmit PUCCH. Cell group 1 221 is a set of cells to be mapped to enable HARQ-ACK feedback and channel information reporting on the PUCCH in the Pcell. In the third embodiment of FIG. 2D, only P cells are included in cell group 1 221. Cell group 2 222 is a set of cells to be mapped to enable HARQ-ACK feedback and channel information reporting through PUCCH in SCell2. In the third embodiment of FIG. 2D, cell group 2 222 includes a total of four cells, S cell 1, S cell 2, S cell 3, and S cell 4. Therefore, the cells mapped to perform HARQ-ACK feedback and channel information reporting through the PUCCH in the Pcell can be seen that the Pcells included in the cell group 1 221 are only HARQ-ACK in the PUCCH. The cells mapped to perform ACK feedback and channel information reporting may be Scell1, Scell2, Scell3, and Scell4 included in the cell group 2 (222).

For convenience, in the following embodiments, the P cell to which the PUCCH is transmitted in the cell group 1 and the cell to which the PUCCH is transmitted in the cell group 2 are referred to as a pS cell.

Next, when PUCCH transmission and PUSCH transmission based on a cell group mapped to a plurality of PUCCHs in FIGS. 2B, 2C, and 2D occur in the same subframe, the uplink control information of the PUCCH is the PUSCH of a cell in the cell group. It is proposed to insert the data into the transmission method. A method of inserting uplink control information independently for each cell group and transmitting the PUSCH is transmitted to each cell group using FIG. 3, 4, and 5. That is, when a plurality of cell groups are configured in the terminal for carrier aggregation, the PUSCH is transmitted in the cells of cell group 1, the PUSCH is not transmitted in the cells of cell group 2, and only the PUCCH is transmitted in the pS cell. The control information of the PUCCH of the pS cell of 2 is inserted into the PUSCH transmitted in the cells of the cell group 1 and is not transmitted.

Since PUCCH transmission and PUSCH transmission may be performed for each cell group, when performing UE uplink power control, a power scaling order may be linked with an uplink control information type of PUCCH transmission and PUSCH transmission. As an example, when HARQ-ACK feedback is inserted into a PUSCH of cell group 1 and channel information is transmitted on a PUCCH of cell group 2, PUCCH transmission power of cell group 2 may be first scalar when power of a terminal is limited. have. As another example, when channel information is inserted into a PUSCH of cell group 1 and HARQ-ACK feedback is transmitted to a PUCCH of cell group 2, the transmit power of the PUSCH of cell group 1 is first scalar when the power of the UE is limited. Can be.

The method proposed in the present invention will be described in detail as follows.

If simultaneous transmission of PUCCH and PUSCH is not configured for a UE in a cell in which PUCCH is transmitted, when simultaneous transmission of PUCCH and PUSCH is configured for a UE in a cell in which PUCCH is transmitted, PUCCH and A description will be given of the case where simultaneous PUSCH transmission is configured for the UE. Hereinafter, simultaneous transmission of PUCCH and PUSCH means a case in which PUCCH and PUSCH are transmitted using the same cell in the same subframe. When the PUCCH and PUSCH overlap, a PUCCH and PUSCH are transmitted using the same or different cell in the same subframe. It means the case.

Whether the terminal supports cell group operation is determined by UE capability for performing PUCCH transmission operation in multiple cells, and the network reports the terminal's capability to the network when the terminal accesses the network. do. The cell group operation refers to an operation of setting up a plurality of cell groups and cells included in a cell group in a carrier aggregation system and inserting uplink control information of a PUCCH into a PUSCH according to the cell group. If the terminal capability supports cell group operation, the network may inform the terminal of cell group configuration information such as the number of cell groups and which cells belong to the cell group through higher layer signaling.

In addition, a terminal capable of simultaneously transmitting PUCCH and PUSCH may or may not be configured to enable simultaneous transmission through higher layer signaling.

First, when simultaneous PUCCH and PUSCH transmission is not configured for the UE in a cell where PUCCH is transmitted, an insertion and transmission operation of uplink control information will be described. That is, when simultaneous transmission of PUCCH and PUSCH is not configured in a Pcell or a pScell, a method of inserting uplink control information of a PUCCH into a PUSCH and transmitting the same when a PUCCH transmission and a PUSCH transmission occur in the same subframe will be described. In the case where simultaneous PUCCH and PUSCH transmission is not configured for the UE, this also applies to a UE that is not capable of simultaneous PUCCH and PUSCH transmission, but also to a UE in which simultaneous PUCCH and PUSCH transmission is possible but simultaneous PUCCH and PUSCH transmission is set as a higher signal. Corresponding.

First, when the cell group 1 includes more than one cell, if the Pcell transmits the PUCCH, the uplink control information insertion is determined based on the situation in which PUSCH transmission occurs in the cell group 1 and the type of the uplink control information. For example, when PUSCH transmission is generated in the cell due to aperiodic channel information transmission request for a cell belonging to cell group 1, uplink control information of PUCCH transmitted in the P cell is aperiodic channel information or HARQ-ACK feedback. When the uplink control information is inserted into the PUSCH due to the aperiodic channel information request of the cell is transmitted. As another example, when PUSCH transmission occurs in a Pcell, when uplink control information of a PUCCH transmitted in the Pcell is periodic channel information or HARQ-ACK feedback, the uplink control information is inserted into a PUSCH of the Pcell. Is sent. As another example, when the PUSCH transmission is generated in the S cell of the cell group 1 rather than the P cell, the uplink control information when the uplink control information of the PUCCH transmitted in the P cell is periodic channel information or HARQ-ACK feedback. Is inserted into the PUSCH of the S cell having the smallest S cell index among the S cells of the cell group 1 transmitting the PUSCH and transmitted. The above insertion and transmission operations are applied in the same manner even when the cell group 2 includes more than one cell. When the pS cell transmits the PUCCH, the uplink control information insertion is determined based on the PUSCH transmission in the cell group 2. do.

Next, if the cell group 1 includes only one cell (ie, a P cell), if the P cell transmits the PUCCH, the uplink control information insertion is unconditionally determined when the PUSCH transmission in the cell group 1 occurs. For example, when PUSCH transmission occurs in the same subframe in a cell belonging to cell group 1, uplink control information of a PUCCH transmitted in the P cell is inserted into the PUSCH and transmitted. The above insertion and transmission operations are applied in the same manner even when the cell group 2 includes only one cell (ie, a pS cell). If the pS cell transmits the PUCCH, uplink control based on the PUSCH transmission in the cell group 2 is performed. Determine the insertion of information.

In the cell in which the uplink control channel is transmitted using FIG. 3, when simultaneous transmission of the uplink control channel and the uplink data channel is not configured for the terminal and the uplink control channel overlaps with the uplink data channel, the control information is included in the uplink data channel. The operation of the base station and the terminal for the insertion will be described.

3A is a flow chart illustrating base station operation. First, in step 301, the base station does not configure simultaneous PUCCH and PUSCH transmission in a PUCCH transmission cell of a cell group (a Pcell in cell group 1 and a pS cell in cell group 2). When the simultaneous PUCCH and PUSCH transmission is not configured for the UE, the PUCCH and PUSCH simultaneous transmission are also applicable to the UE, and the PUCCH and PUSCH simultaneous transmission are possible, but also for the UE whose PUCCH and PUSCH simultaneous transmission are not set as higher signals. Corresponding. In step 302, if the PUCCH reception and the PUSCH reception collide with each other in subframe n, that is, a subframe in which the PUCCH is to be received from the UE and a subframe in which the PUSCH is to be received from the UE are identical, in step 303, the base station transmits the PUCCH (Ie, cell group 1 if the PUCCH transmission cell is a P cell, cell group 2 if the PUCCH transmission cell is a pS cell), it is determined whether it includes one or more cells or only one cell. In step 303, if the cell group transmitting the PUCCH includes one or more cells, in step 304, PUSCH is transmitted based on the situation in which PUSCH transmission occurs in the cell group proposed by the present invention and the type of the uplink control information. The uplink control information is extracted from the received PUSCH by a method of inserting in the. If the cell group transmitting the PUCCH includes only one cell in step 303, when PUSCH transmission in the cell group proposed in the present invention occurs in step 305, the uplink control information is unconditionally inserted into the PUSCH. Extract from the received PUSCH.

3B is a flowchart illustrating the operation of the terminal. First, in step 311, the UE does not configure simultaneous PUCCH and PUSCH transmission in a PUCCH transmission cell of a cell group (P cell in cell group 1 and pS cell in cell group 2). When the simultaneous PUCCH and PUSCH transmission is not configured for the UE, the PUCCH and PUSCH simultaneous transmission are also applicable to the UE, and the PUCCH and PUSCH simultaneous transmission are possible, but also for the UE whose PUCCH and PUSCH simultaneous transmission are not set as higher signals. Corresponding. In step 312, if the PUCCH transmission and the PUSCH transmission collide in subframe n, that is, the subframe in which the UE should transmit the PUCCH and the subframe in which the UE transmits the PUSCH coincide in step 313, the UE transmits the PUCCH (i.e. If the PUCCH transmission cell is a Pcell, it is determined whether the cell group 1, and if the PUCCH transmission cell is a pS cell, the cell group 2) includes one or more cells or only one cell. In step 313, if the cell group transmitting the PUCCH includes one or more cells, in step 314, the PUSCH is transmitted based on the situation in which PUSCH transmission occurs in the cell group proposed by the present invention and the type of the uplink control information. In this manner, the uplink control information is inserted into the PUSCH and transmitted. If the cell group transmitting the PUCCH in step 313 includes only one cell, when the PUSCH transmission in the cell group proposed in the present invention occurs in step 315, the uplink control information is unconditionally inserted into the PUSCH. Insert into PUSCH and transmit.

Second, when simultaneous transmission of PUCCH and PUSCH is configured for a UE in a cell in which PUCCH is transmitted, an insertion and transmission operation of uplink control information will be described. That is, when simultaneous transmission of PUCCH and PUSCH is configured in a Pcell or a pScell, a method of inserting uplink control information of a PUCCH into a PUSCH and transmitting the same when a PUCCH transmission and a PUSCH transmission occur in the same subframe will be described. In the case where simultaneous PUCCH and PUSCH transmission is configured for the UE, simultaneous PUCCH and PUSCH transmission is possible and corresponds to a UE in which simultaneous PUCCH and PUSCH transmission are configured as higher signals.

First, when the cell group 1 includes more than one cell, if the Pcell transmits the PUCCH, the uplink control information insertion is determined based on the situation in which PUSCH transmission occurs in the cell group 1 and the type of the uplink control information. For example, when PUSCH transmission is generated in a Pcell, when uplink control information of an uplink control channel transmitted in the Pcell is periodic channel information and HARQ-ACK feedback, HARQ-ACK feedback of the uplink control information is It is transmitted on the PUCCH of the Pcell, and the periodic channel information is inserted into the PUSCH of the Pcell and transmitted. As another example, when PUSCH transmission is generated in S cell of cell group 1 rather than P cell, when uplink control information of PUCCH transmitted in the P cell is periodic channel information and HARQ-ACK feedback, the uplink control HARQ-ACK feedback of the information is transmitted on the PUCCH of the P cell, and the periodic channel information is inserted into the PUSCH of the S cell having the smallest S cell index among the S cells of the cell group 1 transmitting the PUSCH. As another example, when PUSCH transmission occurs in the cell due to aperiodic channel information transmission request for a cell belonging to cell group 1, the uplink control information of the PUCCH transmitted in the Pcell includes aperiodic channel information and HARQ. In the case of -ACK feedback / scheduling request (SR) information, HARQ-ACK feedback / scheduling request information of the uplink control information is transmitted in PUCCH of the Pcell, and aperiodic channel information is aperiodic channel of the cell. It is inserted into the PUSCH due to the information request and transmitted. This is because the power of the PUCCH is generally higher than that of the PUSCH, so the HARQ-ACK feedback, which directly affects the throughput of the UE, is reliably transmitted using the PUCCH, and is limited in the case of channel information that does not significantly affect the throughput of the UE. In order to save the resources of the PUCCH, it is inserted into the PUSCH and transmitted. The above insertion and transmission operations are applied in the same manner even when the cell group 2 includes more than one cell. When the pS cell transmits the PUCCH, the uplink control information insertion is determined based on the PUSCH transmission in the cell group 2. do.

Next, when cell group 1 includes only one cell (i.e., P cell), when a P cell transmits a PUCCH and a PUSCH transmission occurs in cell group 1, uplink control information is inserted according to the type of uplink control information. Determine. For example, when PUSCH transmission occurs in the same subframe in a cell belonging to cell group 1, HARQ-ACK feedback / scheduling request information of uplink control information of PUCCH transmitted in the Pcell is transmitted in PUCCH, and a periodic channel Aperiodic channel information is inserted into the PUSCH and transmitted. The above insertion and transmission operations are applied in the same manner even when the cell group 2 includes only one cell (ie, a pS cell). If the pS cell transmits the PUCCH, uplink control based on the PUSCH transmission in the cell group 2 is performed. Determine the insertion of information.

In the cell in which an uplink control channel is transmitted using FIG. 4, when simultaneous transmission of an uplink control channel and an uplink data channel is configured for the terminal and the uplink control channel overlaps with the uplink data channel, control information is inserted into the uplink data channel. It describes the operation of the base station and the terminal for.

4A is a flow chart illustrating base station operation. First, in step 401, the base station configures simultaneous PUCCH and PUSCH transmission as a higher signal in a PUCCH transmission cell of a cell group (P cell in cell group 1, pS cell in cell group 2). The simultaneous PUCCH and PUSCH transmission corresponds to a terminal capable of simultaneous PUCCH and PUSCH transmission and having simultaneous PUCCH and PUSCH transmission as an upper signal. In step 402, when the PUCCH reception and the PUSCH reception collide in subframe n, i.e., when the subframe to receive the PUCCH from the UE and the subframe to receive the PUSCH from the UE match, in step 403, the base station transmits the PUCCH. (Ie, cell group 1 if the PUCCH transmission cell is a P cell, cell group 2 if the PUCCH transmission cell is a pS cell), it is determined whether it includes one or more cells or only one cell. In step 403, if the cell group transmitting the PUCCH includes one or more cells, in step 404, the PUSCH is transmitted based on the situation in which PUSCH transmission occurs in the cell group proposed by the present invention and the type of the uplink control information. The uplink control information is extracted from the received PUSCH by a method of inserting in the. If the cell group transmitting the PUCCH in step 403 includes only one cell, when PUSCH transmission in the cell group proposed in the present invention occurs in step 405, uplink control information is inserted into the PUSCH according to the type of uplink control information. The uplink control information is extracted from the received PUSCH.

4B is a flowchart illustrating the operation of the terminal. First, in step 411, the UE sets simultaneous PUCCH and PUSCH transmission as a higher signal in a PUCCH transmission cell of a cell group (P cell in cell group 1 and pS cell in cell group 2). When the simultaneous PUCCH and PUSCH transmission is configured for the UE, the simultaneous PUCCH and PUSCH transmission is possible, and the PUCCH and PUSCH simultaneous transmission correspond to the terminal having the higher signal. In step 412, when the PUCCH transmission and the PUSCH transmission collide in subframe n, that is, when the subframe in which the UE should transmit the PUCCH matches the subframe in which the UE transmits the PUSCH, in step 413, the UE transmits the PUCCH (i.e. If the PUCCH transmission cell is a Pcell, it is determined whether the cell group 1, and if the PUCCH transmission cell is a pS cell, the cell group 2) includes one or more cells or only one cell. If the cell group transmitting the PUCCH in step 413 includes one or more cells, the uplink control information is determined based on the situation in which PUSCH transmission occurs in the cell group proposed by the present invention and the type of the uplink control information in step 414. The uplink control information is inserted into the PUSCH and transmitted using the method of being inserted into the PUSCH. If the cell group transmitting the PUCCH in step 413 includes only one cell, if PUSCH transmission in the cell group proposed in the present invention occurs in step 415, uplink control information is unconditionally transmitted to the PUSCH according to the type of uplink control information. By inserting the uplink control information is inserted into the PUSCH and transmitted.

Third, the insertion and transmission operation in cell group 1 when simultaneous transmission of PUCCH and PUSCH is configured for the UE only in the Pcell will be described. That is, when simultaneous transmission of PUCCH and PUSCH is configured only in a Pcell, a method of inserting uplink control information of a PUCCH into a PUSCH and transmitting the same when a PUCCH transmission and a PUSCH transmission occur in the same subframe will be described. In the case where simultaneous PUCCH and PUSCH transmission is configured for the UE only in the Pcell, the standard is defined in the standard so that simultaneous PUCCH and PUSCH can be transmitted only in the Pcell, simultaneous PUCCH and PUSCH transmission of the UE are possible, and simultaneous PUCCH and PUSCH transmission are P. Corresponds to a terminal configured as a higher signal only in a cell.

First, when the cell group 1 includes more than one cell, if the Pcell transmits the PUCCH, the uplink control information insertion is determined based on the situation in which PUSCH transmission occurs in the cell group 1 and the type of the uplink control information. For example, when PUSCH transmission is generated in a Pcell, when uplink control information of an uplink control channel transmitted in the Pcell is periodic channel information and HARQ-ACK feedback, HARQ-ACK feedback among the uplink control information. Is transmitted in the PUCCH of the Pcell, and periodic channel information is inserted into the PUSCH of the Pcell and transmitted. As another example, when the PUSCH transmission is generated in the S cell of the cell group 1 rather than the P cell, when the uplink control information of the PUCCH transmitted in the P cell is the periodic channel information and HARQ-ACK feedback, the uplink HARQ-ACK feedback of the control information is transmitted on the PUCCH of the P cell, and the periodic channel information is inserted into the PUSCH of the S cell having the smallest S cell index among the S cells of the cell group 1 transmitting the PUSCH. As another example, when PUSCH transmission occurs in the cell due to aperiodic channel information transmission request for a cell belonging to cell group 1, the uplink control information of the PUCCH transmitted in the Pcell includes aperiodic channel information and HARQ. In case of ACK feedback / scheduling request information, HARQ-ACK feedback / scheduling request information of the uplink control information is transmitted in the PUCCH of the Pcell, and aperiodic channel information is inserted into the PUSCH due to the aperiodic channel information request of the cell. Is sent.

Next, if cell group 1 includes only one cell (i.e., P cell), if the P cell transmits PUCCH, if PUSCH transmission occurs in cell group 1, uplink control information is inserted according to the type of uplink control information. Decide For example, when PUSCH transmission occurs in the same subframe in a cell belonging to cell group 1, HARQ-ACK feedback / scheduling request information of uplink control information of PUCCH transmitted in the Pcell is transmitted in PUCCH and a periodic channel / ratio Periodic channel information is inserted into the PUSCH and transmitted.

When the uplink control channel and the uplink data channel are simultaneously transmitted to the user equipment only in the Pcell using FIG. 5, the configuration is indicated as an upper signal and the uplink control channel overlaps with the uplink data channel in cell group 1. In the cell group 1, an operation of a base station and a terminal for inserting control information into an uplink data channel will be described.

5A is a flow chart illustrating base station operation. First, in step 501, the base station configures simultaneous PUCCH and PUSCH transmission as an upper signal for a Pcell which is a PUCCH transmission cell of cell group 1 to the UE. The simultaneous PUCCH and PUSCH transmission corresponds to a terminal capable of simultaneous PUCCH and PUSCH transmission and having simultaneous PUCCH and PUSCH transmission as an upper signal. In step 502, if the PUCCH reception and the PUSCH reception collide in subframe n, i.e., the subframe in which the PUCCH should be received from the UE and the subframe in which the PUSCH is received from the UE coincide, the BS in step 503 has one cell group 1 It is determined whether the above cell is included or only one cell is included. If cell group 1 includes one or more cells in step 503, the uplink control information is transmitted to the PUSCH based on the situation in which PUSCH transmission occurs in cell group 1 proposed in the present invention and the type of uplink control information in step 504. The uplink control information is extracted from the received PUSCH by the insertion method. If cell group 1 includes only one cell in step 503, if PUSCH transmission in cell group 1 proposed in the present invention occurs in step 505, a method for inserting uplink control information into a PUSCH according to the type of uplink control information Uplink control information is extracted from the received PUSCH.

5B is a flowchart illustrating the operation of the terminal. First, in step 511, the UE configures simultaneous PUCCH and PUSCH transmission as a higher signal in a P cell which is a PUCCH transmission cell of cell group 1. When the simultaneous PUCCH and PUSCH transmission is configured for the UE, the simultaneous PUCCH and PUSCH transmission is possible, and the PUCCH and PUSCH simultaneous transmission correspond to the terminal having the higher signal. In step 512, if the PUCCH transmission and the PUSCH transmission collide in subframe n, that is, the subframe in which the UE should transmit the PUCCH and the subframe in which the UE transmits the PUSCH coincide, in step 513, the UE determines that the cell group 1 is one or more cells. It is determined whether or not to include or only one cell. If cell group 1 includes one or more cells in step 513, in step 514, uplink control information is transmitted to the PUSCH based on the situation in which PUSCH transmission occurs in cell group 1 proposed in the present invention and the type of uplink control information. By inserting the uplink control information is inserted into the PUSCH and transmitted. If cell group 1 includes only one cell in step 513, if PUSCH transmission in cell group 1 proposed in the present invention occurs in step 515, a method of inserting uplink control information into a PUSCH according to the type of uplink control information The uplink control information is inserted into the PUSCH and transmitted.

Next, when PUCCH transmission and PUSCH transmission based on multiple cell groups of FIGS. 2B, 2C, and 2D occur in the same subframe using FIG. 6, uplink control information of the PUCCH is inserted into the PUSCH regardless of the cell group. We propose a method of transmission. That is, when a plurality of cell groups are configured in the terminal for carrier aggregation, even if the PUSCH is transmitted in the cells of the cell group 1 and the PUSCH is not transmitted in the cells of the cell group 2 but only the PUCCH is transmitted in the pS cell, The control information of the PUCCH of the pS cell may be inserted into the PUSCH transmitted in the cells of cell group 1 and transmitted. In this case, since PUCCH transmission and PUSCH transmission can be performed for each cell group, when performing UE uplink power control, a power scaling order can be linked with the uplink control information type of PUCCH transmission and PUSCH transmission. have. As an example, when HARQ-ACK feedback is inserted into PUSCH of cell group 1 and channel information is transmitted on PUCCH of cell group 2, when the power of the UE is limited, PUCCH transmission power of cell group 2 is first scaled. Can be. As another example, when channel information is inserted into a PUSCH of cell group 1 and HARQ-ACK feedback is transmitted to a PUCCH of cell group 2, the transmit power of the PUSCH of cell group 1 is first scalated when the power of the UE is limited. Can be.

The insertion and transmission operation of uplink control information in cell group 2 when simultaneous PUCCH and PUSCH transmission is configured for the UE only in the Pcell will be described. That is, when simultaneous PUCCH and PUSCH transmission is configured only in the Pcell, when the PUSCH transmission in the pS cell and the PUSCH transmission occur in the same subframe regardless of the cell group, the uplink control information of the PUCCH is inserted into the PUSCH and transmitted. Explain how. In the case where simultaneous PUCCH and PUSCH transmission is configured for the UE only in the Pcell, it is defined in the standard to enable simultaneous PUCCH and PUSCH transmission in the Pcell only. Simultaneous transmission of PUCCH and PUSCH of the UE is possible and simultaneous PUCCH and PUSCH transmission are performed in the Pcell. Only corresponds to the terminal set to the higher signal.

When the pS cell transmits the PUCCH in cell group 2, since the PUS transmission cannot be performed in the pS cell at all, uplink control based on the situation in which PUSCH transmission occurs in all cells regardless of the cell group and the type of uplink control information. Determine the insertion of information. Therefore, in this case, the cell group 2 is not distinguished according to whether it includes more than one cell or only one cell. For example, when PUSCH transmission is generated in a Pcell of cell group 1, when uplink control information of an uplink control channel transmitted from the pS cell is periodic channel information and HARQ-ACK feedback, HARQ- of the uplink control information may be used. The ACK feedback is transmitted on the PUCCH of the pS cell, and the periodic channel information is inserted into the PUSCH of the P cell of the cell group 1 and transmitted. As another example, when the PUSCH transmission occurs in the S cells of the cell group 1 and the cell group 2 rather than the P cell, the uplink control information of the PUCCH transmitted in the pS cell is the periodic channel information and HARQ-ACK feedback. The HARQ-ACK feedback of the uplink control information is transmitted in the PUCCH of the pS cell, and the periodic channel information is an S cell having the smallest S cell index among the S cells of cell group 1 and cell group 2 transmitting the PUSCH. It is inserted into a PUSCH and transmitted. As another example, when PUSCH transmission occurs in a cell due to aperiodic channel information transmission requests for cells belonging to cell group 1 and cell group 2, uplink control information of a PUCCH transmitted in the pS cell is aperiodic. In case of channel information and HARQ-ACK feedback / scheduling request information, HARQ-ACK feedback / scheduling request information of the uplink control information is transmitted in the PUCCH of the pS cell, and aperiodic channel information is aperiodic channel information of the cell. It is inserted into the PUSCH due to the request and transmitted.

In view of transmitting uplink control information through one PUSCH regardless of cell group, the embodiment can be applied regardless of whether simultaneous PUCCH and PUSCH transmission is configured in a Pcell and a pScell. Do. If simultaneous transmission of PUCCH and PUSCH is configured in the Pcell and the pScell, PUCCH including HARQ-ACK feedback is transmitted in the Pcell and the pScell, respectively, and periodic or aperiodic channel information is transmitted through the PUSCH, 2 A situation in which one PUCCH and one PUSCH are simultaneously transmitted may occur. Therefore, in this case, when performing UE uplink power control, power scalability may be performed as follows. PUSCH transmission power may be first scalared, and PUCCH having a small number of HARQ-ACK feedbacks currently actually transmitted during two PUCCH transmissions may be scalared first. For example, when the HARQ-ACK feedback transmitted for the actual data transmission in the P cell is 6 bits and the HARQ-ACK feedback transmitted for the actual data transmission in the pS cell is 4 bits, the PUCCH transmitted in the pS cell is first scalared. As another example, a PUCCH having a small number of cells included in a cell group may be first scalared. For example, when the number of cells included in the cell group 1 is 2 including the P cell and the number of cells included in the cell group 2 is 3 including the pS cell, the PUCCH transmitted from the P cell is first scalared. As another example, a PUCCH having a small number of HARQ-ACK feedback considering the number of cells and a transmission mode included in a cell group may be first scalared. For example, in each transmission mode of Pcell and Scell1 included in cell group 1, the transmission mode of the Pcell is a transmission mode for transmitting two codewords, and the transmission mode of Scell1 transmits two codewords. As a transmission mode, a total of 4 HARQ-ACK feedback numbers are expected, and in each transmission mode of the pS cell, S cell 3, and S cell 4 included in cell group 2, the transmission mode of the pS cell transmits one codeword. Mode, the transmission mode of Scell 3 is a transmission mode for transmitting one codeword, and the transmission mode of Scell 4 is a transmission mode for transmitting one codeword, a total of three HARQ-ACK feedback numbers are expected. Therefore, in this case, the PUCCH of the pS cell may be scalared first. As another example, in the Pcell, control information at a higher level may be transmitted, and considering that it is important for system operation to transmit HARQ-ACK feedback on the control information in time, the PUCCH of the pScell is always first. Scaling may be considered.

6, simultaneous transmission of an uplink control channel and an uplink data channel may be configured to the UE only in a Pcell, and the configuration is indicated by an upper signal and the uplink control channel overlaps the uplink data channel regardless of the cell group. In this case, the operation of the base station and the terminal for the insertion of control information in the uplink data channel will be described.

6A is a flow chart illustrating base station operation. First, in step 601, the base station configures simultaneous PUCCH and PUSCH transmission as a higher signal for a Pcell which is a PUCCH transmission cell of cell group 1 to the UE. The simultaneous PUCCH and PUSCH transmission corresponds to a terminal capable of simultaneous PUCCH and PUSCH transmission and having simultaneous PUCCH and PUSCH transmission as an upper signal. In step 602, a PUCCH reception of a pS cell and a PUSCH reception in a cell regardless of a cell group collide in subframe n, that is, a subframe in which a PUCCH should be received from a UE and a subframe in which a PUSCH is received from the UE match. In this case, in step 603, uplink control is performed by inserting uplink control information in PUCCH of a pS cell into a PUSCH based on a situation in which PUSCH transmission occurs regardless of a cell group proposed by the present invention and a type of uplink control information. The information is extracted from the received PUSCH.

6B is a flowchart showing the operation of the terminal. First, in step 611, the UE configures simultaneous PUCCH and PUSCH transmission as a higher signal in a P cell which is a PUCCH transmission cell of cell group 1. When the simultaneous PUCCH and PUSCH transmission is configured for the UE, the simultaneous PUCCH and PUSCH transmission is possible, and the PUCCH and PUSCH simultaneous transmission correspond to the terminal having the higher signal. In step 612, if the PUCCH transmission of the pS cell and the PUSCH transmission in any cell collide regardless of the cell group in subframe n, that is, the subframe in which the UE should transmit the PUCCH and the subframe in which the UE transmits the PUSCH coincide with each other. In step 613, uplink control information is inserted into a PUSCH based on a situation in which PUSCH transmission occurs regardless of a cell group proposed by the present invention and a type of uplink control information in a PUCCH of a pS cell. Insert into PUSCH and transmit.

7 is a diagram illustrating a base station apparatus according to an embodiment of the present invention. Referring to FIG. 7, the base station apparatus is a transmitter comprising a PDCCH block 705, a PDSCH block 716, a PHICH block 724, and a multiplexer 715, a PUSCH block 730, and a PUCCH block 739. When the PUCCH and PUSCH reception overlaps in the same subframe according to the present invention, the receiver constituting the neutralizer 749, the control unit 701, the scheduler 703 for controlling the uplink control information extraction from the received PUSCH . Herein, a method of extracting uplink control information from the received PUSCH includes all embodiments of the present invention. Although there may be a plurality of transmitters and receivers for transmission and reception in a plurality of cells, it will be described on the assumption that there is only one transmitter and one receiver for explanation.

When the PUCCH and the PUSCH reception overlap in the same subframe, the controller 701 including the control of extracting uplink control information from the PUSCH is scheduled with reference to the amount of data to be transmitted to the terminal, the amount of resources available in the system, and the like. The timing relationship between the respective physical channels is adjusted for the MS to be performed by the scheduler 703, the PDCCH block 705, the PDSCH block 716, the PHICH block 724, the PUSCH block 730, and the PUCCH block 739. To tell. When the PUCCH and the PUSCH transmission overlap in the same subframe, the controller 701 determines whether the PUCCH and the PUSCH are received in any same subframe and inserts the first uplink control information in the PUSCH into which cell of which cell group to extract the PUSCH. It informs the PUCCH block 739 and the PUSCH block 730 to know. The first cell and the second cell may be the same or different cells, and the uplink control information extraction upon the PUSCH reception of the specific cell group follows the method described in the specific embodiment of the present invention. The PDCCH block 705 configures control information under the control of the scheduler 703, and the control information is multiplexed with other signals in the multiplexer 715.

The PDSCH block 716 generates data under the control of the scheduler 703, and the data is multiplexed with other signals in the multiplexer 715.

The PHICH block 724 generates HARQ ACK / NACK for the PUSCH received from the UE under the control of the scheduler 703. The HARQ ACK / NACK is multiplexed with other signals at the multiplexer 715.

The multiplexed signals are generated as OFDM signals and transmitted to the terminal.

The PUSCH block 730 at the receiver acquires PUSCH data with respect to the signal received from the terminal. As described in the specific embodiment of the present invention, when the PUCCH and the PUSCH reception overlap in the same subframe, the first uplink control information is extracted from the PUSCH. Notify the scheduler 703 of the decoding result of the PUSCH data to adjust downlink HARQ ACK / NACK generation, and apply the error of the decoding result to the controller 701 to transmit the downlink HARQ ACK / NACK. Adjust the timing.

The PUCCH block 730 obtains uplink ACK / NACK or channel information from the signal received from the terminal. The obtained uplink ACK / NACK or channel information is applied to the scheduler 703 and used to determine whether to retransmit the PDSCH and a modulation and coding scheme (MCS). The obtained uplink ACK / NACK is applied to the control unit 701 to adjust the transmission timing of the PDSCH.

8 is a diagram illustrating a terminal device according to an embodiment of the present invention.

Referring to FIG. 8, the UE includes a transmitter including a PUCCH block 805, a PUSCH block 816, a multiplexer 815, a PHICH block 824, a PDSCH block 830, a PDCCH block 839, and a demultiplexer. According to the present invention, a receiver configured as 849 and a controller 801 controlling insertion of uplink control information into the PUSCH when the PUCCH and the PUSCH transmission overlap in the same subframe. Although there may be a plurality of transmitters and receivers for transmission and reception at both base stations and multiple cells, it is assumed that there is only one transmitter and one receiver for explanation.

According to the present invention, when the PUCCH transmitted in the first cell and the PUSCH transmission transmitted in the second cell overlap in the same subframe, the control unit 801 determines which cell is transmitted in any same subframe. The PUCCH block 805 and the PUSCH block 816 inform which cell of the group the first uplink control information is inserted into the PUSCH and transmitted. The first cell and the second cell may be the same or different cells, and the insertion of uplink control information during the PUSCH transmission of the specific cell group follows the method described in the specific embodiment of the present invention.

The PUCCH block 805 configures HARQ ACK / NACK or channel information as uplink control information under the control of the control unit 801 for controlling downlink data storage in a soft buffer, and the HARQ ACK / NACK or channel information is a multiplexer. At 815, the signal is multiplexed with other signals.

The PUSCH block 816 extracts data to be transmitted, and the extracted data is multiplexed with other signals in the multiplexer 815. At this time, when the PUCCH transmission and the PUSCH transmission overlap according to a specific embodiment of the present invention, uplink control information is inserted into the PUSCH.

The multiplexed signals are generated as a single carrier frequency division multiple access (SC-FDMA) signal and transmitted to the base station in consideration of the DL / UL HARQ-ACK transmission / reception timing.

In the receiver, the PHICH block 824 separates the PHICH signal from the base station through the demultiplexer 849 according to the DL / UL HARQ-ACK transmission / reception timing from the base station, and then acquires whether the HARQ ACK / NACK for the PUSCH. .

The PDSCH block 830 separates the PDSCH signal from the base station through the demultiplexer 849, acquires PDSCH data, and notifies the PUCCH block 805 of an error regarding the decoding result of the data. By adjusting the generation of uplink HARQ ACK / NACK, and whether the error on the decoding result is applied to the control unit 801 to adjust the timing when transmitting uplink HARQ ACK / NACK.

The PDCCH block 839 separates the PDCCH signal through the demultiplexer 849 and decodes the DCI format to obtain downlink control information from the decoded signal.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

Claims (20)

A method of transmitting control information of a terminal in a wireless communication system using carrier aggregation, Confirming whether simultaneous transmission of an uplink control channel for transmitting the control information and an uplink data channel for transmitting data is permitted; Determining whether the uplink control channel and the uplink data channel transmitted in the cell group of the terminal are transmitted in any same subframe; Determining whether the cell group includes one cell or two or more cells; And transmitting the uplink data channel as a result of the determination of the cell group. The method of claim 1, wherein when the cell group includes one cell, the uplink data channel transmitted from the one cell transmits the control information and the data. The method of claim 1, wherein when the cell group includes two cells, transmission of the uplink control channel through the primary cell of the cell group and the uplink data channel through the primary cell is performed. In case of overlap, the uplink data channel through the primary cell transmits the control information and the data. The method of claim 1, wherein when the cell group includes two cells, transmission of the uplink control channel through the secondary cell of the cell group and the uplink data channel through the primary cell may overlap. In this case, the uplink data channel transmits the control information and the data in a cell having the lowest cell index among the secondary cells transmitting the uplink data channel. The method of claim 1, wherein whether to allow simultaneous transmission is predetermined or can be set. A method of receiving control information of a base station in a wireless communication system using carrier aggregation, Confirming whether simultaneous transmission of an uplink control channel for transmitting the control information and an uplink data channel for transmitting data is permitted; Determining whether the uplink control channel and the uplink data channel transmitted in the cell group of the terminal are transmitted in any same subframe; Determining whether the cell group includes one cell or two or more cells; Receiving the uplink data channel as a result of the determination on the cell group; And And extracting the control information from the uplink data channel. The method of claim 6, wherein when the cell group includes one cell, the uplink data channel transmitted from the one cell transmits the control information and the data. The method of claim 6, wherein when the cell group includes two cells, transmission of the uplink control channel through the primary cell of the cell group and the uplink data channel through the primary cell is performed. In case of overlap, the uplink data channel through the primary cell transmits the control information and the data. The method of claim 6, wherein when the cell group includes two cells, transmission of the uplink control channel through the secondary cell of the cell group and the uplink data channel through the primary cell may overlap. In the case, the uplink data channel transmits the control information and the data in a cell having the lowest cell index among the secondary cells transmitting the uplink data channel. 7. The method of claim 6, wherein whether to allow simultaneous transmission is predetermined or can be set. A terminal for transmitting control information in a wireless communication system using carrier aggregation, Transmitting and receiving unit for transmitting and receiving a signal with the base station; And It is checked whether simultaneous transmission of an uplink control channel for transmitting the control information and an uplink data channel for transmitting data is allowed, and the uplink control channel and the uplink data channel transmitted from a cell group of the terminal are randomly transmitted. It is determined whether the transmission is in the same subframe, it is determined whether the cell group includes one cell or two or more cells, and as a result of the determination on the cell group, control to transmit the uplink data channel. A terminal comprising a control unit. 12. The terminal of claim 11, wherein when the cell group includes one cell, the uplink data channel transmitted by the one cell transmits the control information and the data. 12. The method of claim 11, wherein when the cell group includes two cells, transmission of the uplink control channel through the primary cell of the cell group and the uplink data channel through the primary cell is performed. In case of overlap, the uplink data channel through the primary cell transmits the control information and the data. 12. The method of claim 11, wherein when two cells are included in the cell group, transmission of the uplink control channel through a secondary cell of the cell group and the uplink data channel through a primary cell may overlap. In this case, the uplink data channel is characterized in that for transmitting the control information and the data in the cell having the lowest cell index (index) of the secondary cell for transmitting the uplink data channel. 12. The terminal of claim 11, wherein whether to allow simultaneous transmission is predetermined or can be set. In a base station for receiving control information in a wireless communication system using carrier aggregation, Transmitting and receiving unit for transmitting and receiving a signal with the terminal; And It is checked whether simultaneous transmission of an uplink control channel for transmitting the control information and an uplink data channel for transmitting data is allowed, and the uplink control channel and the uplink data channel transmitted from a cell group of the terminal are randomly transmitted. Determine whether the transmission is performed in the same subframe, determine whether the cell group includes one cell or two or more cells, and as a result of the determination of the cell group, receives the uplink data channel, And a control unit for controlling to extract the control information from the uplink data channel. 17. The base station of claim 16, wherein when one cell is included in the cell group, the uplink data channel transmitted in the one cell transmits the control information and the data. The method of claim 16, wherein when the cell group includes two cells, transmission of the uplink control channel through the primary cell of the cell group and the uplink data channel through the primary cell is performed. In case of overlap, the uplink data channel through the primary cell transmits the control information and the data. 17. The method of claim 16, wherein when two cells are included in the cell group, transmission of the uplink control channel through the secondary cell of the cell group and the uplink data channel through the primary cell is duplicated. In this case, the uplink data channel transmits the control information and the data in a cell having the lowest cell index among the secondary cells transmitting the uplink data channel. 17. The base station according to claim 16, wherein whether to allow simultaneous transmission is predetermined or can be set.

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