WO2016144078A1

WO2016144078A1 - Method for transmitting channel state information and device therefor

Info

Publication number: WO2016144078A1
Application number: PCT/KR2016/002281
Authority: WO
Inventors: 홍성표; 박규진; 이경준; 최우진
Original assignee: 주식회사 케이티
Priority date: 2015-03-09
Filing date: 2016-03-08
Publication date: 2016-09-15

Abstract

The present invention relates to a method and a device for transmitting channel state information by using a PUCCH of an SCell when providing carrier aggregation (CA) or dual connectivity (DC) in a E-UTRAN. Particularly, the present invention provides a method by which a terminal transmits channel state information, and a device therefor, the method comprising the steps of: configuring a carrier aggregation by using one primary cell (PCell) and a plurality of secondary cells (SCells) controlled by a base station; receiving an upper layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one cell among the plurality of secondary cells; receiving, by using the configuration information, a MAC control element in which activation state indication information for a PUCCH SCell having an uplink control channel transmission function is included; and transmitting channel state information on the PUCCH SCell after the PUCCH SCell is activated according to the activation state indication information.

Description

Channel status information transmission method and apparatus

The present invention relates to a method and apparatus for transmitting channel state information using a PUCCH of a secondary cell (SCell) in providing a carrier aggregation (CA) or a dual connectivity (DC) in an E-UTRAN.

As communication systems have evolved, consumers, such as businesses and individuals, have used a wide variety of wireless terminals. Currently, mobile communication systems such as Long Term Evolution (LTE) and LTE-Advanced of the 3GPP series require high-speed large-capacity communication systems capable of transmitting and receiving various data such as video and wireless data, beyond voice-oriented services.

For such a high-speed large-capacity communication system, a technology for increasing the capacity of a terminal by using a small cell is required. In addition, in the case of using the small cell described above, there is a need for a technology in which the terminal can increase the capacity of the terminal by establishing a connection with a plurality of base stations including the small cell to transmit and receive data. To this end, research on a dual connectivity technology that merges one or more cells controlled by two or more base stations has been conducted. In addition, research is being conducted on a technology for processing high-speed large data through merging one or more cells.

As described above, a technology for processing a large amount of data at high speed by developing a carrier merge of a plurality of cells through dual connectivity or carrier merge has been developed. However, in the case of uplink control information (e.g., channel state information), transmission and reception is performed only through one cell (e.g., PCell or PSCell) per base station, so that the number of cells to be merged with the carrier is increased. As the load on an uplink signal of a cell transmitting uplink control information increases, a problem may occur in efficient data processing.

In the above-described background, the present invention proposes a method and apparatus for reducing the load of a specific cell performing channel state information transmission when data is transmitted and received by merging a plurality of cells in a carrier merge or dual connectivity situation.

In addition, the present invention, when the terminal communicates using a plurality of cells controlled by one base station, the channel state information transmission error by setting the channel state information transmission timing according to the activation state change of the cell having a PUCCH transmission function A method and apparatus for preventing the occurrence of the present invention is proposed.

In order to solve the above-mentioned problems, the present invention provides a method for transmitting channel state information by a terminal constituting carrier aggregation, wherein the base station controls one primary cell (PCell) and a plurality of secondary cells ( Configuring a carrier aggregation using a secondary cell (SCell) and an upper layer including configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one of a plurality of secondary cells Receiving a MAC control element including the activation status indication information for the PUCCH SCell configured uplink control channel transmission function using the receiving step and the configuration information and after the PUCCH SCell is activated according to the activation status indication information It provides a method comprising the step of transmitting the channel state information on the PUCCH SCell.

In addition, the present invention is a method for receiving a channel state information in the base station by using a single primary cell (primary cell, PCell) and a plurality of secondary cells (SCell) controlled by the base station to the carrier and carrier merge Configuring and transmitting higher layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function to at least one of the plurality of secondary cells and transmitting an uplink control channel Transmitting a MAC control element including activation status indication information on the configured PUCCH SCell and receiving channel status information on the PUCCH SCell after the PUCCH SCell is activated according to the activation status indication. to provide.

In addition, the present invention provides a control unit for configuring carrier aggregation using one primary cell (PCell) and a plurality of secondary cells (SCell) controlled by the base station in the terminal for transmitting the channel state information; Receive upper layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one of a plurality of secondary cells, and transmit an uplink control channel using the configuration information Terminal device including a receiver for receiving the MAC control element including the activation status indication information for the PUCCH SCell configured and a transmitter for transmitting channel status information on the PUCCH SCell after the PUCCH SCell is activated according to the activation status indication information To provide.

In addition, the present invention, in the base station receiving the channel state information, by using a single primary cell (primary cell, PCell) and a plurality of secondary cells (SCell) controlled by the base station to configure a carrier merge with the terminal Transmitting upper layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function to at least one of a control unit and a plurality of secondary cells, and the uplink control channel transmission function Provides a base station apparatus including a transmitter for transmitting the MAC control element including the activation status indication information for the configured PUCCH SCell and a receiver for receiving channel status information on the PUCCH SCell after the PUCCH SCell is activated according to the activation status indication information. do.

The present invention provides an effect of reducing the load of a specific cell performing channel state information transmission when data is transmitted and received by merging a plurality of cells in a carrier merge or dual connectivity situation.

In addition, the present invention, when the terminal communicates using a plurality of cells controlled by one base station, the channel state information transmission error by setting the channel state information transmission timing according to the activation state change of the cell having a PUCCH transmission function Provides the effect of preventing the occurrence of.

1 is a view for explaining the operation of the terminal according to an embodiment of the present invention.

2 is a view for explaining the configuration of a PUCCH SCell in a carrier aggregation situation according to another embodiment of the present invention.

3 is a view for explaining the configuration of a PUCCH SCell in a dual connectivity situation according to another embodiment of the present invention.

4 is a view for explaining the operation of the base station according to another embodiment of the present invention.

5 is a view for explaining a terminal configuration according to another embodiment of the present invention.

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

Hereinafter, some embodiments of the present invention will be described in detail through exemplary drawings. In adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are assigned to the same components as much as possible even though they are shown in different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

In the present specification, the MTC terminal may mean a terminal supporting low cost (or low complexity) or a terminal supporting coverage enhancement. In the present specification, the MTC terminal may mean a terminal supporting low cost (or low complexity) and coverage enhancement. Alternatively, in the present specification, the MTC terminal may mean a terminal defined in a specific category for supporting low cost (or low complexity) and / or coverage enhancement.

In other words, in the present specification, the MTC terminal may mean a newly defined 3GPP Release-13 low cost (or low complexity) UE category / type for performing LTE-based MTC related operations. Alternatively, in the present specification, the MTC terminal supports enhanced coverage compared to the existing LTE coverage, or supports UE category / type defined in the existing 3GPP Release-12 or lower, or newly defined Release-13 low cost (or lower power consumption). low complexity) can mean UE category / type.

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

A base station or a cell generally refers to a station that communicates with a user terminal, and includes a Node-B, an evolved Node-B, an Sector, a Site, and a BTS. Other terms such as a base transceiver system, an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and a small cell may be called.

In other words, in the present specification, a base station or a cell is a generic meaning indicating some areas or functions covered by a base station controller (BSC) in CDMA, a Node-B in WCDMA, an eNB or a sector (site) in LTE, and the like. It should be interpreted as, and it is meant to cover all the various coverage areas such as megacell, macrocell, microcell, picocell, femtocell and relay node, RRH, RU, small cell communication range.

Since the various cells listed above have a base station for controlling each cell, the base station may be interpreted in two senses. i) the device providing the megacell, the macrocell, the microcell, the picocell, the femtocell, the small cell in relation to the wireless area, or ii) the wireless area itself. In i) all devices which provide a given wireless area are controlled by the same entity or interact with each other to cooperatively configure the wireless area to direct the base station. The eNB, RRH, antenna, RU, LPN, point, transmit / receive point, transmit point, receive point, and the like, according to the configuration of the radio region, become an embodiment of the base station. In ii), the base station may indicate the radio area itself to receive or transmit a signal from a viewpoint of a user terminal or a neighboring base station.

Therefore, megacells, macrocells, microcells, picocells, femtocells, small cells, RRHs, antennas, RUs, low power nodes (LPNs), points, eNBs, transmit / receive points, transmit points, and receive points are collectively referred to as base stations. do.

In the present specification, the user terminal and the base station are two transmitting and receiving entities used to implement the technology or technical idea described in this specification in a comprehensive sense and are not limited by the terms or words specifically referred to. The user terminal and the base station are two types of uplink or downlink transmitting / receiving subjects used to implement the technology or the technical idea described in the present invention, and are used in a generic sense and are not limited by the terms or words specifically referred to. Here, the uplink (Uplink, UL, or uplink) refers to a method for transmitting and receiving data to the base station by the user terminal, the downlink (Downlink, DL, or downlink) means to transmit and receive data to the user terminal by the base station It means the way.

There is no limitation on the multiple access scheme applied to the wireless communication system. Various multiple access techniques such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), OFDM-FDMA, OFDM-TDMA, OFDM-CDMA Can be used. One embodiment of the present invention can be applied to resource allocation in the fields of asynchronous wireless communication evolving to LTE and LTE-Advanced through GSM, WCDMA, HSPA, and synchronous wireless communication evolving to CDMA, CDMA-2000 and UMB. The present invention should not be construed as being limited or limited to a specific wireless communication field, but should be construed as including all technical fields to which the spirit of the present invention can be applied.

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

In addition, in systems such as LTE and LTE Advanced, a standard is configured by configuring uplink and downlink based on one carrier or carrier pair. The uplink and the downlink include a Physical Downlink Control CHannel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel (PHICH), a Physical Uplink Control CHannel (PUCCH), an Enhanced Physical Downlink Control CHannel (EPDCCH), and the like. Control information is transmitted through the same control channel, and data is configured by a data channel such as a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH).

On the other hand, control information may also be transmitted using an enhanced PDCCH (EPDCCH or extended PDCCH).

In the present specification, a cell means a component carrier having a coverage of a signal transmitted from a transmission / reception point or a signal transmitted from a transmission point or a transmission / reception point, and the transmission / reception point itself. Can be.

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

The multiple transmit / receive point is at least one having a base station or a macro cell (hereinafter referred to as an eNB) and a high transmission power or a low transmission power in a macro cell region, which is wired controlled by an optical cable or an optical fiber to the eNB. May be RRH.

In the following, downlink refers to a communication or communication path from a multiple transmission / reception point to a terminal, and uplink refers to a communication or communication path from a terminal to multiple transmission / reception points. In downlink, a transmitter may be part of multiple transmission / reception points, and a receiver may be part of a terminal. In uplink, a transmitter may be part of a terminal, and a receiver may be part of multiple transmission / reception points.

Hereinafter, a situation in which a signal is transmitted and received through a channel such as a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH may be expressed in the form of 'sending and receiving a PUCCH, a PUSCH, a PDCCH, an EPDCCH, and a PDSCH.'

In addition, hereinafter, a description of transmitting or receiving a PDCCH or transmitting or receiving a signal through the PDCCH may be used as a meaning including transmitting or receiving an EPDCCH or transmitting or receiving a signal through the EPDCCH.

That is, the physical downlink control channel described below may mean PDCCH or EPDCCH, and may also be used to include both PDCCH and EPDCCH.

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

Meanwhile, higher layer signaling described below includes RRC signaling for transmitting RRC information including an RRC parameter.

The eNB performs downlink transmission to the terminals. The eNB includes downlink control information and an uplink data channel (eg, a physical downlink shared channel (PDSCH), which is a primary physical channel for unicast transmission, and scheduling required to receive the PDSCH. For example, a physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission on a physical uplink shared channel (PUSCH) may be transmitted. Hereinafter, the transmission and reception of signals through each channel will be described in the form of transmission and reception of the corresponding channel.

In the present specification, the transmission and reception of data using two or more element carriers is described as carrier aggregation or "CA", and the dual connectivity for transmitting and receiving data by merging cells controlled by different base stations. Or "DC".

Conventional CA technology adds multiple UL timing advance DC and FDD-TDD CA technology. However, conventional CA related technologies (CA, DC, etc.) could aggregate up to five carriers in the terminal.

Recently, 3GPP Release 13 is discussing LTE technology study (eg, Licensed-Assisted Access (LAA)) that uses unlicensed frequency bands as a way to cope with the explosion of mobile data traffic. In LAA technology, various matters for using unlicensed spectrum of 5GHz band through CA technology (or CA related technology) are being discussed.

As such, as the discussion of technology development for CA evolves, a large number of carrier consolidation over conventional five carriers may be required. For example, merging of five or more carriers may be needed to enable at least similar bandwidth usage as IEEE 802.11ac Wave 2 over LAA for LTE. In addition to the bands already used for LTE, other frequency bands, such as 3.5 GHz, may also be used for merging five or more carriers. Extending CA technology to merge using more than five carriers gives operators the opportunity to use the available spectrum more effectively for communication needs.

However, as CCs merged with CA capable terminals increase, a cell used as a PCell may cause a very high load. This may be due to the main functions (for example, PUCCH transmission) applied only to the PCell.

In the conventional DC, UE feedback uplink control information (eg, SR, HARQ-ACK, CSI) related to MCG (Master Cell Group) may be transmitted only to a Master eNB (MeNB), and related to SCG (Secondary Cell Group). UE feedback uplink control information (eg, SR, HARQ-ACK, CSI) may be transmitted only to a SeNB (Secondary eNB). In addition, the PUCCH for the MCG in the MCG is supported only in the PCell, PUCCH for the SCG in the SCG could be supported only in the PSCell. Accommodating all PUCCH transmissions in the PCell can have a clear impact on the performance of not only CA terminals but also non-CA terminals.

As a method for solving this problem, a method of providing a PUCCH on the SCell may be considered. For example, the UE may transmit UCI (eg, at least one of HARQ-ACK, CSI reporting, and SR) through an SCell providing a PUCCH transmission function. Here, the channel state information (CSI) reporting indicates channel quality indicator (CQI) / precoding matrix indicator (PMI) / precoding type indicator (PTI) / rank indicator (RI) reporting. Alternatively, the CSI report may consist of CQI / PMI / PTI / RI controlled by the base station.

However, no specific procedure is provided for the method of providing the PUCCH on the SCell which is considered as a method for distributing the PUCCH transmission load.

In the present specification, the terminal and the base station form an RRC connection, and describe the cell which is the basis of the handover as PCell, and the terminal is distinguished from the master base station (Master eNB, MeNB) when configuring the dual connectivity with the base station. A base station providing additional radio resources to a terminal will be described by describing it as a secondary base station (SeNB). In addition, a cell that performs some or all of the functions of the PCell among the cells controlled by the secondary base station will be described as PSCell. Accordingly, one PCell may exist when the terminal configures carrier aggregation through a plurality of cells controlled by one base station. In contrast, when the terminal configures dual connectivity with two base stations, one of the cells controlled by the master base station is set to PCell, and one of the cells controlled by the secondary base station is set to PSCell. In addition, in a dual connectivity situation, cells controlled by the master base station will be described as MCG (Master Cell Group), and cells controlled by the secondary base station will be described as SCG (Secondary Cell Group).

Meanwhile, in the present specification, a cell in which a PUCCH transmission function is configured is described as a PUCCH SCell, and a group of SCells for transmitting uplink control information through the PUCCH SCell is described as a secondary PUCCH group or a SCell PUCCH group. do. In addition, a description will be given of a group of SCells for transmitting uplink control information through a PCell or a PSCell as a primary PUCCH group or a PCell PUCCH group.

The terms described above are for convenience of description and understanding and are not limited to the terms.

In a method of transmitting channel state information, a terminal constituting carrier aggregation according to the present invention includes a carrier using one primary cell (PCell) and a plurality of secondary cells (SCell) controlled by a base station. Receiving a higher layer signaling including configuration information and configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one of the plurality of secondary cells; Receiving a MAC control element including the activation status indication information for the PUCCH SCell configured uplink control channel transmission function by using the uplink control channel transmission and transmits the channel status information on the PUCCH SCell after the PUCCH SCell is activated according to the activation status indication information It provides a method comprising the steps of.

Referring to FIG. 1, the terminal includes configuring a carrier merge using one primary cell (PCell) and a plurality of secondary cells (SCell) controlled by a base station (S110). The terminal may configure carrier aggregation using a plurality of cells controlled by one base station. For example, the terminal may configure carrier aggregation with one PCell and multiple SCells. Alternatively, the terminal may configure dual connectivity using a plurality of cells controlled by the master base station and a plurality of cells controlled by the secondary base station. However, even in the case of configuring dual connectivity, it can be regarded as carrier merging in a broad sense in that communication is performed by merging a plurality of cells. That is, when looking at each of the master base station and the secondary base station constituting the dual connectivity, the terminal configures carrier aggregation. Therefore, carrier aggregation described below will be described in a comprehensive sense of dual connectivity.

When a terminal configures carrier aggregation using a plurality of cells controlled by one base station, one cell is configured as a PCell and the other cell is configured as an SCell. The terminal may receive information required for configuring carrier aggregation from the base station. For example, the terminal may receive information about a cell constituting carrier aggregation from the base station.

In addition, the terminal includes receiving higher layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one of the plurality of secondary cells (S120). . When the terminal configures carrier aggregation using one PCell and a plurality of SCells, the terminal may receive configuration information for configuring at least one cell of the SCells as a PUCCH SCell. That is, the base station has a problem that the uplink control information of all SCells are transmitted through the PCell when the PUCCH transmission function is configured only in the PCell when the terminal configures carrier aggregation using more than five cells. . This causes an excessive load on the PCell uplink signal transmission, thereby reducing system efficiency. Therefore, in the present invention, when the base station configures carrier aggregation, it is possible to configure the SCell capable of performing the PUCCH transmission function in addition to the PCell. To this end, the terminal may receive configuration information for configuring the SCell constituting the PUCCH transmission function. The configuration information may be received through higher layer signaling (eg, RRC signaling). Meanwhile, when the PUCCH SCell is configured, each of the plurality of secondary cells except the PUCCH SCell may be configured to be mapped to any one group of the primary PUCCH group and the secondary PUCCH group. In this case, at least one secondary cell mapped to the primary PUCCH group transmits uplink control information including channel state information through the primary cell (PCell), and at least one secondary cell mapped to the secondary PUCCH group is a PUCCH SCell. The uplink control information including the channel state information can be transmitted through. To this end, the UE may additionally receive information on one or more secondary cells mapped to the secondary PUCCH group through higher layer signaling. The PUCCH SCell may be configured with two or more, and each SCell may be configured to transmit uplink control information through any one PUCCH SCell of two or more PUCCH SCell and PCell.

In addition, the terminal includes receiving the MAC control element including the activation status indication information on the PUCCH SCell configured uplink control channel transmission function using the configuration information (S130). Since the PUCCH SCell is also a SCell, a state change may be applied. For example, the PUCCH SCell may be configured in an activated state or an inactive state, and a state change may be performed. To this end, the terminal may receive activation state indication information indicating the activation state for the PUCCH SCell from the base station. The activation state indication information may be received through a MAC control element.

In addition, the terminal includes transmitting channel state information on the PUCCH SCell after the PUCCH SCell is activated according to the activation state indication information (S140). The UE may change the PUCCH SCell to an activation state according to the activation state indication information. Alternatively, the terminal may change the PUCCH SCell to an inactive state when the activation state indication information indicates inactivation. For example, when the activation state indication information is received in subframe number n, the UE may change the corresponding PUCCH SCell into an activation state in the eighth subframe after n. The timing of changing the activation state of the PUCCH SCell may vary depending on a hardware specification of the UE, and may be activated within a predetermined time range according to a predetermined requirement (for example, 3GPP RAN WG4 requirement). For example, when the activation state indication information is received in subframe n, the terminal may be changed to the activation state in a period from subframe n + 8 to subframe n + 24 (or n + 34). Since the subframe number may be set from 0 to 9, the subframe n + 8 may be the subframe 9 of the same radio frame when n is 1. Similarly, when n is 2, n + 8 may be subframe 0 of the next radio frame. However, hereinafter, n + 8, n + 24, n + 34, etc. are described for convenience of understanding and may not coincide with the subframe number. That is, n + 8, n + 24, n + 34, etc. should be understood to mean the number of subframes after subframe n.

The terminal transmits channel state information after the PUCCH SCell is activated. For example, when the PUCCH SCell is in an inactive state, the UE does not transmit channel state information of the SCells included in the secondary PUCCH group transmitting the channel state information through the corresponding PUCCH SCell, and the PUCCH SCell is activated according to the activation state indication information. Channel status information is transmitted only when the status is changed. The timing at which the channel state information is transmitted may be set to be the same as the activation timing of the PUCCH SCell, or may be set to any interval after the PUCCH SCell is switched to the activated state.

On the other hand, when the PUCCH SCell is configured in an inactive state, SCells included in the secondary PUCCH group transmitting channel state information through the corresponding PUCCH SCell may also be configured in an inactive state. That is, the SCells included in the secondary PUCCH group may be determined whether to change the activation state according to the activation state of the PUCCH SCell configured in the secondary PUCCH group. In other words, when the PUCCH SCell is configured to be in an inactive state, the SCells of the secondary PUCCH group are also configured to be in an inactive state.

In addition, the PUCCH SCell may be changed without applying the secondary cell deactivation timer when the deactivation state is changed from the deactivation state. In contrast, the SCells included in the secondary PUCCH group are applied to the secondary cell deactivation timer when the deactivation state is changed from the deactivation state to the deactivation state when the secondary cell deactivation timer expires. Thus, unlike the other SCells, the PUCCH SCell may change its activation state only under the control of the base station. The secondary cell deactivation timer may be configured in advance in the terminal or according to the setting of the base station. Except for the PUCCH SCell, the SCells may be started by applying the configured secondary cell deactivation timer to the activated state.

Hereinafter, the above-described terminal operation of the present invention and a corresponding base station operation will be described in more detail for each embodiment.

2 and 3 illustrate the operation of the PUCCH SCell by dividing the case of configuring the CA and the case of configuring the DC.

The UE may configure carrier aggregation using a plurality of cells controlled by one base station, and configure a PUCCH transmission function in at least one PUCCH SCell among SCells. In addition, SCells transmitting uplink control information through the PUCCH SCell may be mapped to the PUCCH SCell. Similarly, SCells transmitting uplink control information through the PCell may be mapped to the PCell.

Referring to FIG. 2, it may be assumed that the terminal configures carrier aggregation using 10 cells controlled by the base station. For example, the terminal may configure carrier aggregation using 10 cells from C1 to C10. In this case, C1 is a PCell, and C2 to C10 are composed of SCells. Meanwhile, the UE may configure a cell constituting carrier aggregation into two or more groups with respect to PUCCH transmission function mapping. For example, the terminal may configure cell groups 1 to 3. Cell group 1 includes C1, C2, C6, and C7, and C1 may perform a PUCCH transmission function to the PCell. Meanwhile, cell group 2 may include C3 and C5, and C3 may be configured as a PUCCH SCell to perform a PUCCH transmission function of cell group 2. Similarly, cell group 3 is composed of C4, C8, C9 and C10 and C4 is configured as a PUCCH SCell to perform the PUCCH transmission function of cell group 3.

As described above, the UE and the base station of the present invention can configure the carrier aggregation in more than five, at least one of the cells controlled by a single base station is set to PUCCH SCell, PUCCH transmission function of the secondary PUCCH group SCell can be controlled to perform. The number of each group may be variously set, and the SCells included in the cell group may also be changed. That is, the cell group may be dynamically set or changed depending on the need or activation of SCells. For example, although C3 and C5 of cell group 2 are included, when C3 is inactivated, C5 may be changed to cell group 1 or cell group 2 to transmit uplink control information.

Meanwhile, since C3 and C4 are also SCells, the state may be changed by activation or deactivation. For example, the activation operation of the PUCCH SCell may be changed by the MAC control element of the base station, and the SCell activation state of the secondary PUCCH group including the corresponding PUCCH SCell may be controlled in conjunction with the activation operation of the PUCCH SCell. In more detail, activation of SCells included in a corresponding cell group may be determined according to activation of a PUCCH SCell. In addition, when the PUCCH SCell is changed to an activated state, the secondary cell deactivation timer is not applied.

Referring to FIG. 3, the present invention may be applied even when the terminal configures dual connectivity. The terminal may configure dual connectivity with the master base station and the secondary base station. In this case, the terminal may perform communication using a plurality of cells controlled by the master base station and a plurality of cells controlled by the secondary base station. For example, the terminal may configure the MCG using five cells and configure the SCG using the other five cells. In this case, one cell of the MCG may be configured as a PCell, and one cell of the SCG may be configured as a PSCell to perform a PUCCH transmission function. However, when the number of cells controlled by each base station increases, a load may be applied to the PUCCH transmission function of the PCell or the PSCell. In the present invention, a cell having the PUCCH transmission function may be additionally configured and controlled in each of the MCG or SCG. That is, when C1 is a PCell in the MCG, C4 may be set to the PUCCH SCell to control to perform the PUCCH transmission function of the cell group 2. Similarly, when C6 is a PSCell in SCG, C8 may be set to PUCCH SCell to control to perform PUCCH transmission function of cell group 4.

As described above, in FIG. 3, the cell groups 1 to 4 may be divided based on the PUCCH transmission cell, and SCells of each cell group may transmit uplink control information to the corresponding base station through one cell of the corresponding cell group. . As described in FIG. 2, the number of cell groups, the number of cells included in each cell group, and the like may be dynamically changed.

In addition, unlike PCell and PSCell,

PUCCH SCell

1 and 2 may be applied with a state change by activation or deactivation. That is, the PUCCH SCells can be changed in the activation state, and as described in FIG. 2, the SCells of the secondary PUCCH group including the corresponding PUCCH SCell may be set to change to the activation state when the PUCCH SCell is activated. The number of cell groups described above with reference to FIGS. 2 and 3 and the division of cell groups of each cell are described, for example, and may be variously set according to a setting.

Hereinafter, the activation operation of the PUCCH SCell and the SCells and the timing of transmitting channel state information will be described in more detail.

As described above, the UE may configure the mapping of the PUCCH SCell and other SCells belonging to the PUCCH SCell by using the configuration information received through higher layer signaling. In the following description, SCells of a secondary PUCCH group including a specific PUCCH SCell are described as corresponding " SCells belonging to a PUCCH SCell ".

Meanwhile, since the PUCCH SCell is also a kind of SCell, an activation / deactivation operation used for reducing UE power consumption may also be applied to the PUCCH SCell.

In order to activate or deactivate the SCell, the MAC entity of the UE may perform the following operations for each TTI and each configured SCell.

If the MAC entity receives an activation / deactivation MAC control element that activates the SCell at this Transmission Time Interval (TTI), then the MAC entity shall perform the following actions on the TTI according to the timing defined in the 3GPP TS 36.213 document. 1) Activate SCell and apply normal SCell operation. 2) A secondary cell deactivation timer (eg, sCellDeactivationTimer) associated with the SCell must be started or restarted.

(The MAC entity shall for each TTI and for each configured SCell:

if the MAC entity receives an Activation / Deactivation MAC control element in this TTI activating the SCell, the MAC entity shall in the TTI according to the timing defined in [TS 36.213]: 1) activate the SCell; i.e. apply normal SCell operation including; 2) start or restart the sCellDeactivationTimer associated with the SCell;)

The general SCell operation described above includes at least one of SRS transmission on the SCell, CQI / PMI / RI / PTI reporting for the SCell, PDCCH monitoring on the SCell, and PDCCH monitoring for the SCell.

When an activation / deactivation operation is provided to the PUCCH SCell, as described above, the UE (or base station) must operate according to a preset SCell activation / deactivation timing with respect to the PUCCH SCell.

The SCell activation or deactivation timing may be set as follows.

When the UE receives an activation command for the secondary cell in subframe n, the corresponding actions are the minimum requirements defined in the 3GPP TS 36.133 document except for the following actions that should be applied to subframe n + 8. It should be applied no later than the specification and no faster than the subframe n + 8.

The operation to be applied to the subframe n + 8 is as follows.

Actions related to CSI reporting

The action associated with the sCellDeactivationTimer associated with the secondary cell;

In addition, when the UE receives an activation command for the secondary cell in subframe n or when the sCellDeactivationTimer associated with the secondary cell expires in subframe n, CSI reporting that should be applied to subframe n + 8 Except for the actions associated with, it shall be applied no later than the minimum requirements mentioned above. (When a UE receives a deactivation command for a secondary cell or the sCellDeactivationTimer associated with the secondary cell expires in subframe n, the corresponding actions in [36.321] shall apply no later than the minimum requirement defined in [36.133], except for the actions related to CSI reporting which shall be applied in subframe n + 8.)

The minimum requirements can be set as follows.

For the SCell activation delay requirement, if the UE sends a valid measurement report for a period such as max (5 measCycleSCell, 5 DRX cycles) before the receipt of the SCell activation command and it is later than subframe n + 24 if the SCell remains detectable If not, the terminal should be able to apply the operation not later than subframe n + 34. (Upon receiving SCell activation command in subframe n, the UE shall be capable to transmit valid CSI report and apply actions related to the activation command as specified for the SCell being activated no later than in subframe n + 24 provided the following conditions are met for the SCell:

-During the period equal to max (5 measCycleSCell, 5 DRX cycles) before the reception of the SCell activation command:

-the UE has sent a valid measurement report for the SCell being activated and

the SCell being activated remains detectable according to the cell identification conditions specified in section 8.3.3.2,

-SCell being activated also remains detectable during the SCell activation delay according to the cell identification conditions specified in section 8.3.3.2.

Otherwise upon receiving the SCell activation command in subframe n, the UE shall be capable to transmit valid CSI report and apply actions related to the activation command for the SCell being activated no later than in subframe n + 34 provided the SCell can be successfully detected on the first attempt.)

In the case of the SCell deactivation delay requirement, the terminal may operate no later than n + 8.

(Upon receiving SCell deactivation command or upon expiry of the sCellDeactivationTimer in subframe n, the UE shall accomplish the deactivation actions for the SCell being deactivated no later than in subframe n + 8.)

As described above, when the terminal receives the activation command, the activation operation (eg, CQI / PMI / RI / PTI reporting for the SCell) related to the transmission of channel state information at a fixed timing (for example, subframe n + 8). Must be performed. Alternatively, when the terminal receives the deactivation command, the channel state information may be transmitted up to a fixed timing (for example, n + 7, which is a subframe before subframe n + 8, and other, for example, subframe n + 8). . Alternatively, when the terminal receives the deactivation command, the deactivation operation (eg, not report CQI / PMI / RI / PTI) related to channel state information transmission (CSI reporting) at a fixed timing (for example, subframe n + 8). for the SCell). This is for aligning / synchronizing an activation / deactivation operation state for a corresponding SCell between a terminal and a base station. This can reduce the decoding complexity of the base station. Alternatively, unnecessary terminal operation can be prevented. Alternatively, channel state information for transmission / retransmission scheduling through the SCell may be obtained at a fixed time.

When the PUCCH SCell is configured in the terminal, the terminal performs channel state information of the SCells belonging to the PUCCH SCell or its secondary PUCCH group through the corresponding PUCCH SCell.

However, when the UE receiving the activation command does not activate the PUCCH SCell at the fixed time described above, there is a problem in that the UE cannot transmit the channel state information at the fixed time. Alternatively, the terminal receiving the deactivation command may deactivate the PUCCH SCell before the fixed time described above, and thus may not perform channel state information transmission until the fixed time.

That is, when providing a PUCCH through the SCell, the terminal should perform the channel state information of the PUCCH SCell or SCells belonging to the PUCCH SCell through the corresponding PUCCH SCell. However, when the PUCCH SCell is activated, the UE cannot transmit the channel state information through the PUCCH SCell during the delay time for the UE to receive the activation command of the PUCCH SCell and activate the cell. There was a problem that the efficiency can be reduced. Alternatively, after the delay time required for the UE to receive the deactivation command of the PUCCH SCell and deactivate the cell, the UE cannot transmit the channel state information through the PUCCH SCell, thereby increasing decoding complexity of the base station or decreasing scheduling efficiency. There was.

The present invention devised to solve this problem is to provide a specific method and apparatus for applying the activation / deactivation to the PUCCH SCell in the UE transmits the PUCCH through the SCell. In addition, an object of the present invention is to provide a method and apparatus for effectively controlling the activation or deactivation timing of an SCell between a terminal and a base station.

1. Embodiment for PUCCH SCell Activation Operation

The base station may properly manage the activation / deactivation state of the SCells. Therefore, while the PUCCH SCell is deactivated, other SCells belonging to the corresponding PUCCH SCell may not be activated. That is, when the PUCCH SCell is in an inactive state, the SCells of the secondary PUCCH group including the corresponding PUCCH SCell are configured in an inactive state.

For example, when the base station attempts to activate other SCells belonging to the PUCCH SCell, when the corresponding PUCCH SCell is activated, the base station may instruct an activation state change for other SCells. Alternatively, other SCells may be activated together with an activation state indication of the PUCCH SCell.

Meanwhile, when activating other SCells belonging to the PUCCH SCell while the PUCCH SCell is activated, a problem may occur according to the operation of the secondary cell deactivation timer (for example, sCellDeactivationTimer).

For example, the secondary cell deactivation timer may be included in the MAC configuration information and configured in the terminal. The secondary cell deactivation timer may be configured with one value when one or more SCells are configured in the terminal, but each SCell independently operates. Therefore, when the second cell deactivation timer is applied to the PUCCH SCell when the other cell belonging to the PUCCH SCell is activated while the PUCCH SCell is activated, a problem may occur that the PUCCH SCell is deactivated early.

In order to solve this problem, the PUCCH SCell according to the present invention may be configured not to apply the secondary cell deactivation timer operation applied to ordinary SCells.

For example, when another SCell belonging to the PUCCH SCell is activated, the secondary cell deactivation timer of the PUCCH SCell may be started or restarted. In this case, when the SCell is activated, the secondary cell deactivation timer of the PUCCH SCell is also started or restarted, thereby preventing a situation in which the PUCCH SCell is deactivated while the SCell is activated.

As another example of this, the dedicated secondary cell deactivation timer for the PUCCH SCell may be set to an infinite value. That is, when the PUCCH SCell is changed to the activated state, the PUCCH SCell can prevent the change to the deactivated state according to the expiration of the timer according to the secondary cell deactivation timer having an infinite value.

As another example of this, the dedicated secondary cell deactivation timer for the PUCCH SCell may be set to an infinite value and the dedicated secondary cell deactivation timer timer may not be operated.

As another example of this, the secondary cell deactivation timer of the conventional MAC configuration information may not be applied to the PUCCH SCell. For example, the secondary cell deactivation timer may be applied to other SCells, but the secondary cell deactivation timer may not be applied to the PUCCH SCell.

As another example of this, a MAC control element for deactivating the SCell in which the PUCCH is configured at the MAC level is applied to the PUCCH SCell without applying the secondary cell deactivation timer of the conventional MAC configuration information. Can be received and deactivated. Alternatively, at the RRC level, the UE may trigger the release of the corresponding SCell or the base station may release the corresponding SCell by receiving an instruction to release the SCell.

In addition, the method of not applying the operation of the secondary cell deactivation timer applied to the conventional SCell according to the prior art may be variously set in addition to the above-described method.

Hereinafter, the operation of the terminal when activating the PUCCH SCell will be described.

(1) n+8에 채널상태정보 전송에 관련된 액션 수행(1) Perform action related to sending channel status information to n + 8

When the UE receives an activation command for the PUCCH SCell in subframe n, one or more of the following actions corresponding to activation are applied to subframe n + 8.

Actions related to CSI reporting (CQI / PMI / RI / PTI reporting for the SCell).

If the secondary cell deactivation timer associated with the PUCCH SCell is applied, an action related to the secondary cell deactivation timer.

Other actions corresponding to activation (e.g., at least one of SRS transmission on SCell, PDCCH monitoring on SCell, and PDCCH monitoring for SCell) are no later than the minimum requirement described above and are less than subframe n + 8. It is not applied faster.

As an example of this, when the PUCCH SCell is configured, the PUCCH SCell is not later than the above-described minimum requirements (e.g., no later than subframe n + 24 or no later than subframe n + 34). If it is activated within), it is possible to apply an action related to the transmission of channel state information to the subframe n + 8 through the PCell or through the activated serving cell. Specifically, periodic channel state information transmission may be transmitted through the PCell using the PUCCH in subframe n + 8. Alternatively, periodic channel state information transmission may be transmitted through a PCell or an activated serving cell using PUSCH in subframe n + 8. If the UE is not configured for simultaneous PUSCH and PUCCH transmission, the UE may transmit periodic channel state information on the PUSCH of the serving cell having the smallest ServCellIndex in the subframe having the PUSCH assignment. Alternatively, aperiodic channel state information transmission may be transmitted through a PCell or an activated serving cell using a PUSCH in subframe n + 8.

As another example of this, even when the PUCCH SCell is configured, the PUCCH SCell is not later than the above-described minimum requirements (e.g., no later than subframe n + 24 or no later than subframe n + 34). When activated within the subframe n + 8 (e.g., subframe n + 9) to the subframe before activation, do not apply actions related to channel state information transmission through the PCell or other activated serving cells. You may.

As another example of this, even when the PUCCH SCell is configured, the PUCCH SCell is not later than the minimum requirements described above after the subframe n + 8 (for example, no later than the subframe n + 24 or later than the subframe n + 34). When activated within a subframe n + 8 (e.g., subframe n + 9) to the subframe before activation, the action related to the transmission of channel state information through the PCell or other activated serving cell is applied. Can be. Specifically, periodic channel state information transmission may be transmitted through the PCell using the PUCCH within the period. Alternatively, periodic channel state information transmission may be transmitted through a PCell or an activated serving cell using a PUSCH within a corresponding period. Alternatively, aperiodic channel state information transmission may be transmitted through a PCell or an activated serving cell using a PUSCH within a corresponding period.

As another example of this, even when the PUCCH SCell is configured, the PUCCH SCell is not later than the minimum requirements described above after the subframe n + 8 (for example, no later than the subframe n + 24 or later than the subframe n + 34). When activated within the subframe n + 8, the subframe n + 8 to the subframe before activation may apply an action related to channel state information transmission through a PCell or another activated serving cell using the PUSCH. For example, it is not possible to apply an action related to the transmission of channel state information through a PCell or another activated serving cell through the PUCCH, but a PCell or other activated using the PUSCH from n + 8 to a subframe before being activated. An action related to channel state information transmission may be applied through the serving cell. Specifically, periodic channel state information transmission may be transmitted through a PCell or an activated serving cell using PUSCH. Alternatively, periodic channel state information transmission may be transmitted through a PCell or an activated serving cell using PUSCH.

As another example of this, even when the PUCCH SCell is configured, the PUCCH SCell is not later than the minimum requirements described above after the subframe n + 8 (for example, no later than the subframe n + 24 or later than the subframe n + 34). When activated within a network, other actions corresponding to the activation (eg, at least one of SRS transmission on the SCell, PDCCH monitoring on the SCell, and PDCCH monitoring for the SCell) are not later than the minimum requirement and serve. It may be applied not faster than frame n + 8.

As another example of this, even when the PUCCH SCell is configured, the PUCCH SCell is not later than the minimum requirements described above after the subframe n + 8 (for example, no later than the subframe n + 24 or later than the subframe n + 34). And when activated within other actions (e.g., at least one of transmitting SRS on the SCell, PDCCH monitoring on the SCell, and PDCCH monitoring for the SCell) corresponding to the activation, and not later than the minimum requirement. It is applied not faster than the subframe.

As another example of this, even when the PUCCH SCell is configured, the PUCCH SCell is not later than the minimum requirements described above after the subframe n + 8 (for example, no later than the subframe n + 24 or later than the subframe n + 34). When activated in a network, other actions corresponding to the activation (eg, at least one of SRS transmission on SCell, PDCCH monitoring on SCell, and PDCCH monitoring for SCell) are not later than the minimum requirement and the channel It may be applied faster than the subframe in which the action related to the status information transmission is performed.

As another example of this, even when the PUCCH SCell is configured, the PUCCH SCell is not later than the minimum requirements described above after the subframe n + 8 (for example, no later than the subframe n + 24 or later than the subframe n + 34). When activated in a network, other actions corresponding to the activation (eg, at least one of SRS transmission on the SCell, PDCCH monitoring on the SCell, and PDCCH monitoring for the SCell) are not later than the minimum requirement and CSI. It may be applied not faster than the subframe in which 1 is added to the subframe in which the action related to the reporting is performed.

(2) 활성화 될 때 CSI 리포팅에 관련된 액션 수행에 대한 실시예(2) An embodiment of performing an action related to CSI reporting when activated

When the UE receives an activation command for the PUCCH SCell in subframe n, an action related to transmission of channel state information corresponding to the activation (for example, CQI / PMI / RI / PTI reporting for the SCell) Not later than the minimum requirement described above and no faster than subframe n + 8.

Alternatively, when the UE receives an activation command for the PUCCH SCell in subframe n, the action related to the transmission of channel state information corresponding to the activation is not later than the minimum requirement and is faster than the activated subframe. (Or to a subframe being activated, or from a subframe being activated or to a subframe performing an action corresponding to activation, hereinafter referred to as an activated subframe for convenience of description).

On the other hand, other actions corresponding to activation (eg, at least one action of SRS transmission on SCell, PDCCH monitoring on SCell, and PDCCH monitoring for SCell) are not later than the minimum requirement and are less than subframe n + 8. It is not applied faster.

As an example of this, if a PUCCH SCell is configured, the PUCCH SCell is activated within a minimum requirement (e.g., no later than subframe n + 24 or no later than subframe n + 34) from subframe n + 8. If so, the action related to the transmission of channel state information may not be applied before being activated. Specifically, periodic channel state information transmission through the PUCCH may not be applied before the PUCCH SCell is activated. Alternatively, the periodic channel state information transmission through the PUSCH may not be applied before the PUCCH SCell is activated. Alternatively, before the PUCCH SCell is activated, aperiodic channel state information transmission through the PUSCH may not be applied. Alternatively, periodic channel state information transmission through PUCCH may be applied to the PUCCH SCell from the subframe in which the PUCCH SCell is activated. Alternatively, periodic channel state information transmission through the PUSCH of the SCell included in the secondary PUCCH group may be applied from the subframe in which the PUCCH SCell is activated. Alternatively, aperiodic channel state information transmission may be applied through the PUSCH of the SCell included in the secondary PUCCH group from the subframe in which the PUCCH SCell is activated.

As another example of this, when the UE receives an activation command for the PUCCH SCell in subframe n, an action related to transmission of channel state information corresponding to the activation (for example, CQI / PMI / RI / PTI reporting) for the SCell) is applied no later than the aforementioned minimum requirements and no faster than subframe n + 8. Specifically, when a subframe in which the PUCCH SCell is activated is a subframe n + j (where j is an integer of 7 <j <24 or 7 <j <34), the subframe in which the PUCCH SCell is activated (n + j Some of the actions corresponding to activation (eg, SRS transmission on the SCell) may be applied. Accordingly, the base station may instruct transmission of the channel state information through the PUCCH SCell in subframe n + j + 1 (or after subframe n + j + 1). Accordingly, the UE may perform PDCCH monitoring or PDCCH monitoring for the SCell on the SCell in subframe n + j + 1. Alternatively, PDCCH monitoring on the SCell or PDCCH monitoring for the SCell may also be performed in the subframe n + j. The UE may perform channel state information transmission through the PUCCH SCell in subframe n + j + 5. Alternatively, the terminal may perform channel state information transmission through the PUCCH SCell in subframe n + j + 4.

As described above, in the case of the PUCCH SCell, the secondary cell deactivation timer may not be applied or a value different from the general SCell may be applied.

If the secondary cell deactivation timer associated with the PUCCH SCell is applied, the action related to the secondary cell deactivation timer is applied to the subframe n + 8. Or, if the secondary cell deactivation timer associated with the PUCCH SCell is applied, the action related to the secondary cell deactivation timer is applied no later than the aforementioned minimum requirement and no faster than the subframe n + 8. Or, if the secondary cell deactivation timer associated with the PUCCH SCell is applied, the action related to the secondary cell deactivation timer is applied not later than the aforementioned minimum requirement and not faster than the activated subframe.

2. PUCCH SCell에 속한 다른 SCell(s) 활성화 동작에 대한 실시예2. Embodiment for Activating Other SCell (s) Activating PUCCH SCell

The base station may properly manage the activation / deactivation state of the SCells. Accordingly, while the PUCCH SCell is deactivated, other SCells belonging to the corresponding PUCCH SCell may be controlled not to be activated.

For example, when the base station attempts to activate other SCells belonging to the PUCCH SCell, the PUCCH SCell must be activated.

As another example, when the base station attempts to activate other SCells belonging to the PUCCH SCell, the PUCCH SCell should be activated no later than the minimum requirement described above.

As another example, when the base station tries to activate other SCells belonging to the PUCCH SCell, the base station may activate together with the PUCCH SCell of the secondary PUCCH group to which the corresponding SCell belongs. For reference, the activation / deactivation MAC control element may distinguish and indicate activation / deactivation of each SCell for all SCells. Accordingly, the base station can activate the PUCCH SCell and other SCells belonging to the PUCCH SCell together.

Hereinafter, the operation of the terminal when activating another SCell (s) belonging to the PUCCH SCell.

(1) n+8에 CSI 리포팅에 관련된 액션 수행에 대한 실시예(1) An embodiment of performing an action related to CSI reporting at n + 8

For example, when the UE receives an activation command for another SCell belonging to the PUCCH SCell in subframe n, the next action corresponding to activation of another SCell belonging to the PUCCH SCell while the PUCCH SCell is activated Are applied to subframe n + 8.

An action related to the secondary cell deactivation timer.

Other actions corresponding to activation for other SCells belonging to the PUCCH SCell (eg, at least one action of SRS transmission on SCell, PDCCH monitoring on SCell, and PDCCH monitoring for SCell) are later than the minimum requirement described above. And not faster than subframe n + 8.

As another example, when the UE receives an activation command for another SCell belonging to the PUCCH SCell in subframe n, one or more of the following actions corresponding to the activation of the other SCell belonging to the PUCCH SCell are: Applies to frame n + 8.

An action related to the secondary cell deactivation timer.

That is, when the UE receives a MAC control element indicating an activation state for another SCell belonging to the PUCCH SCell, when the PUCCH SCell is in an activation state, the UE receives a subframe after the eighth from the subframe receiving the MAC control element indicating the activation state The channel state information transmission operation may be performed in the frame or the channel state information transmission operation may be performed in the 8th subsequent subframe without considering the PUCCH SCell activation state.

Hereinafter, the embodiment will be described in more detail.

For example, when the PUCCH SCell and other SCells belonging to the PUCCH SCell are activated together, the PUCCH SCell is not later than the above-described minimum requirement (for example, subframe n + 24 or after subframe n + 8). Can be activated no later than +34). In this case, before the PUCCH SCell is activated, an action related to channel state information transmission may be applied to the subframe n + 8 through the PCell or the activated serving cell. Specifically, the periodic channel state information transmission may be transmitted through the PCell using the PUCCH at n + 8. Alternatively, periodic channel state information transmission may be transmitted through a PCell or an activated serving cell using PUSCH at n + 8. Alternatively, aperiodic channel state information transmission may be transmitted through a PCell or an activated serving cell using a PUSCH at n + 8.

As another example, when the PUCCH SCell and other SCells belonging to the PUCCH SCell are activated together, the PUCCH SCell is not later than n + 8 or less than the aforementioned minimum requirements (for example, subframe n + 24 or subframe n). Can be activated no later than +34). In this case, the subframe n + 8 (for example, n + 9) until the subframe before the PUCCH SCell is activated may be configured such that an action related to channel state information transmission is not applied through a PCell or another activated serving cell. It may be.

As another example, when a PUCCH SCell and other SCells belonging to the PUCCH SCell are activated together, the PUCCH SCell is not later than the minimum requirement (e.g., subframe n + 24 or after subframe n + 8). not later than n + 34). In this case, an action related to channel state information transmission may be applied through a PCell or another activated serving cell from subframe n + 8 (for example, n + 9) to subframe before PUCCH SCell is activated. . Specifically, periodic channel state information transmission may be transmitted through the PCell using the PUCCH. Alternatively, periodic channel state information transmission may be transmitted through a PCell or an activated serving cell using PUSCH. Alternatively, aperiodic channel state information transmission may be transmitted through a PCell or an activated serving cell using PUSCH.

As another example, when a PUCCH SCell and other SCells belonging to the PUCCH SCell are activated together, the PUCCH SCell is not later than the minimum requirement (e.g., subframe n + 24 or after subframe n + 8). not later than n + 34). In this case, before the PUCCH SCell is activated, at least one of other actions corresponding to activation of another SCell belonging to the PUCCH SCell (for example, SRS transmission on the SCell, PDCCH monitoring on the SCell, and PDCCH monitoring for the SCell). ) Is applied no later than the minimum requirement and no faster than the subframe in which the PUCCH SCell is activated.

As another example, when a PUCCH SCell and other SCells belonging to the PUCCH SCell are activated together, the PUCCH SCell is not later than the minimum requirement (e.g., subframe n + 24 or after subframe n + 8). not later than n + 34). In this case, before the PUCCH SCell is activated, at least one of other actions corresponding to activation of another SCell belonging to the PUCCH SCell (for example, SRS transmission on the SCell, PDCCH monitoring on the SCell, and PDCCH monitoring for the SCell). ) Is applied no later than the minimum requirement and no faster than the subframe in which the action related to the transmission of channel state information is performed.

As another example, when a PUCCH SCell and other SCells belonging to the PUCCH SCell are activated together, the PUCCH SCell is not later than the minimum requirement (e.g., subframe n + 24 or after subframe n + 8). not later than n + 34). In this case, before the PUCCH SCell is activated, one or more actions corresponding to activation for other SCells belonging to the PUCCH SCell (eg, sending SRS on the SCell, PDCCH monitoring on the SCell, and PDCCH monitoring for the SCell). ) Is applied not later than the minimum requirement and not faster than the subframe in which 1 is added to the subframe in which the action related to channel state information transmission is performed.

(2) PUCCH SCell이 활성화 될 때 PUCCH SCell에 속한 SCell에 대한 채널상태정보 전송에 관련된 액션 수행에 대한 실시예(2) An embodiment of performing an action related to transmission of channel state information for a SCell belonging to a PUCCH SCell when the PUCCH SCell is activated

For example, when a UE receives an activation command for another SCell belonging to a PUCCH SCell in subframe n, an action related to transmission of channel state information corresponding to activation of another SCell belonging to a PUCCH SCell (for example, For example, CQI / PMI / RI / PTI reporting for the SCell is applied not later than the aforementioned minimum requirement and not earlier than subframe n + 8.

As another example, when receiving an activation command for another SCell belonging to the PUCCH SCell in subframe n, an action related to transmission of channel state information corresponding to activation of another SCell belonging to the PUCCH SCell (for example, CQI / PMI / RI / PTI reporting for the SCell) is applied not later than the minimum requirement described above and not earlier than the subframe in which the PUCCH SCell is activated (or in the subframe being activated or from the subframe being activated). .

On the other hand, other actions corresponding to activation for other SCells belonging to the PUCCH SCell (eg, at least one action of SRS transmission on the SCell, PDCCH monitoring on the SCell, and PDCCH monitoring for the SCell) are less than the aforementioned minimum requirements. It is applied not later and faster than subframe n + 8.

When a PUCCH SCell and other SCells belonging to the PUCCH SCell are activated together, the PUCCH SCell is not later than the minimum requirement described above (e.g., no later than subframe n + 24 or after subframe n + 34). Not later). In this case, the action related to channel state information transmission may not be applied before the PUCCH SCell is activated. Specifically, before the PUCCH SCell is activated, periodic channel state information transmission through the PUCCH for another SCell belonging to the corresponding PUCCH SCell may not be applied. Alternatively, before the PUCCH SCell is activated, periodic channel state information transmission through the PUSCH for another SCell belonging to the corresponding PUCCH SCell may not be applied. Alternatively, before the PUCCH SCell is activated, it may be possible not to apply aperiodic channel state information transmission through the PUSCH for another SCell belonging to the corresponding PUCCH SCell.

Meanwhile, an action related to the secondary cell deactivation timer for another SCell belonging to the PUCCH SCell is applied to subframe n + 8. Or, the action related to the secondary cell deactivation timer for another SCell belonging to the PUCCH SCell is applied not later than the aforementioned minimum requirement and not faster than the subframe n + 8. Alternatively, the action related to the secondary cell deactivation timer for another SCell belonging to the PUCCH SCell is applied not later than the aforementioned minimum requirement and not faster than the activated subframe for the corresponding PUCCH SCell.

3. PUCCH SCell 비활성화 동작3. Disable PUCCH SCell

The base station can properly manage the activation / deactivation state of the SCells. Therefore, while the PUCCH SCell is inactivated, other SCells belonging to the PUCCH SCell may not be activated.

For example, when the base station deactivates the PUCCH SCell, the base station may deactivate other SCells belonging to the PUCCH SCell together.

Hereinafter, the UE operation when deactivating the PUCCH SCell will be described.

(1) n+8에 채널상태정보 전송에 관련된 비활성화 액션 수행에 대한 실시예(1) Embodiment of Deactivation Action Related to Transmission of Channel Status Information at n + 8

When the UE receives a deactivation command for the PUCCH SCell in subframe n or when the secondary cell deactivation timer associated with the PUCCH SCell expires in subframe n, an action related to channel state information transmission (for example, , not report CQI / PMI / RI / PTI for the SCell) is applied to subframe n + 8.

Other actions corresponding to deactivation for the PUCCH SCell (eg, no SRS on the SCell, no UL-SCH on the SCell, no RACH on the SCell, PDCCH monitoring off on the SCell and PDCCH monitoring off on the SCell) One action) is applied no later than a preset minimum requirement (eg, subframe n + 8).

For example, the PUCCH SCell may be deactivated within a minimum requirement (eg, no later than subframe n + 8, ie subframe n + k, k is an integer 0 <k <7). In this case, the action related to the transmission of channel status information is applied to subframe n + 8, so that the channel for the PUCCH SCell up to subframe n + 7 or up to subframe n + 7 or subframe n + 7 in the inactive subframe. Status information transmission operation (for example, CQI / PMI / RI / PTI reporting for the SCell) must be performed. To this end, actions related to the transmission of channel state information may be applied to subframe n + 7, or from inactive subframe to subframe n + 7 or subframe n + 7, through the PCell or through an active serving cell. have. Specifically, the periodic channel state information may be transmitted through the PCell using the PUCCH in subframe n + 7 or in inactive subframe up to subframe n + 7 or subframe n + 7. Alternatively, the periodic channel state information may be transmitted through a PCell or through an activated serving cell using a PUSCH from subframe n + 7 or from inactive subframe to subframe n + 7 or subframe n + 7. have. Alternatively, the aperiodic channel state information transmission may be transmitted through a PCell or through an activated serving cell using a PUSCH from subframe n + 7 or subframe n + 7 to subframe n + 7 or subframe n + 7. Can be.

(2) 비활성화 될 때 채널상태정보 전송에 관련된 비활성화 액션 수행에 대한 실시예(2) Embodiment of performing deactivation action related to channel state information transmission when deactivation

When the UE receives a deactivation command for the PUCCH SCell in subframe n or when the secondary cell deactivation timer associated with the PUCCH SCell expires in subframe n, an action related to channel state information transmission (for example, , not report CQI / PMI / RI / PTI for the SCell) is applied no later than a preset minimum requirement (eg, subframe n + 8).

Or, when the UE receives a deactivation command for the PUCCH SCell in subframe n or when the secondary cell deactivation timer associated with the PUCCH SCell expires in subframe n, an action related to channel state information transmission (eg, For example, not report CQI / PMI / RI / PTI for the SCell is not later than the subframe being deactivated (or at a subframe being deactivated or from a subframe being deactivated or a subframe performing actions corresponding to deactivation). Apply.

Other actions corresponding to deactivation for the PUCCH SCell (eg, no SRS on the SCell, no UL-SCH on the SCell, no RACH on the SCell, PDCCH monitoring off on the SCell and PDCCH monitoring off on the SCell) One action is applied no later than the minimum requirement (e.g., subframe n + 8). Specifically, the deactivation action related to the transmission of the channel state information from the subframe in which the PUCCH SCell is deactivated to the subframe n + 7 may not be applied. Alternatively, periodic channel state information transmission may not be performed through the PUCCH from the subframe in which the PUCCH SCell is inactivated to the subframe n + 7. Alternatively, periodic channel state information transmission may not be performed through the PUSCH from the subframe in which the PUCCH SCell is inactivated to the subframe n + 7. Alternatively, aperiodic channel state information may not be transmitted through the PUSCH from the subframe in which the PUCCH SCell is inactivated to the subframe n + 7.

4. PUCCH SCell에 속한 다른 SCell(s) 비활성화 동작4. Disable other SCell (s) belonging to PUCCH SCell

The base station can properly manage the activation / deactivation state of the SCells. Therefore, while the PUCCH SCell is deactivated, other SCells belonging to the corresponding PUCCH SCell may be controlled so as not to change to an activated state.

For example, when the base station deactivates the PUCCH SCell, the base station may deactivate other SCells belonging to the corresponding PUCCH SCell together.

Hereinafter, the operation of the terminal when deactivating the SCell (s) belonging to the PUCCH SCell.

When the UE receives a deactivation command for the SCell belonging to the PUCCH SCell in subframe n or when the secondary cell deactivation timer associated with a specific SCell expires in subframe n, the channel for the SCell belonging to the PUCCH SCell Actions related to the transmission of status information (for example, not report CQI / PMI / RI / PTI for the SCell) apply to subframe n + 8.

Other actions corresponding to deactivation for the SCell belonging to the PUCCH SCell (eg, no SRS on the SCell, no UL-SCH on the SCell, no RACH on the SCell, PDCCH monitoring off on the SCell and PDCCH monitoring for the SCell) At least one action of the pause is applied no later than the minimum requirement (eg, subframe n + 8).

Specifically, for example, when the PUCCH SCell and other SCells belonging to the PUCCH SCell are deactivated together, the PUCCH SCell is not later than the aforementioned minimum requirement (eg, subframe n + 8, i.e., subframe n +). k, k can be deactivated within 0 <k <7 integer. In this case, an action related to the transmission of channel state information (for example, not report CQI / PMI / RI / PTI for the SCell) is applied to subframe n + 8, and thus, in subframe n + 7 or in an inactive subframe. Channel state information transmission operation (for example, CQI / PMI / RI / PTI reporting for the SCell) for the SCell belonging to the PUCCH SCell until subframe n + 7 or subframe n + 7 should be performed. To this end, actions related to the transmission of channel state information may be applied to subframe n + 7, or from inactive subframe to subframe n + 7 or subframe n + 7, through the PCell or through an active serving cell. have.

For example, periodic channel state information transmission may be transmitted through a PCell using a PUCCH in subframe n + 7 or in an inactive subframe to subframe n + 7 or subframe n + 7.

As another example, periodic channel state information transmission is transmitted through a PCell or through an active serving cell using a PUSCH from subframe n + 7 or subframe n + 7 to subframe n + 7 or subframe n + 7. Can be.

As another example, aperiodic channel state information transmission is performed in subframe n + 7 or through deactivated subframe to subframe n + 7 or subframe n + 7 through a PCell or through an activated serving cell. Can be sent.

(2) 비활성화 될 때 CSI 리포팅에 관련된 비활성화 액션 수행에 대한 실시예(2) Embodiment of performing deactivation action related to CSI reporting when deactivated

When the UE receives a deactivation command for the SCell belonging to the PUCCH SCell in subframe n or when the secondary cell deactivation timer associated with the corresponding SCell expires in subframe n, the channel for the SCell belonging to the PUCCH SCell Actions related to the transmission of the status information (eg, not report CQI / PMI / RI / PTI for the SCell) are applied no later than a preset minimum requirement (eg, subframe n + 8).

Alternatively, when receiving a deactivation command for a SCell belonging to the PUCCH SCell in subframe n, or when the secondary cell deactivation timer associated with the corresponding SCell expires in subframe n, a channel for the SCell belonging to the PUCCH SCell The action related to the status information transmission is applied not later than the subframe in which the PUCCH SCell is deactivated (or in a subframe deactivated or from a subframe deactivated or a subframe in which actions corresponding to deactivation are performed).

Other actions corresponding to deactivation for the PUCCH SCell (eg, no SRS on the SCell, no UL-SCH on the SCell, no RACH on the SCell, PDCCH monitoring off on the SCell and PDCCH monitoring off on the SCell) One action is applied no later than the minimum requirement (e.g., subframe n + 8).

For example, the deactivation action related to the transmission of the channel state information from the subframe in which the PUCCH SCell is deactivated to the subframe n + 7 may not be applied.

As another example, periodic channel state information transmission may not be performed through the PUCCH from the subframe in which the PUCCH SCell is inactivated to the subframe n + 7.

As another example, periodic channel state information transmission may not be performed through the PUSCH from the subframe in which the PUCCH SCell is inactivated to the subframe n + 7.

As another example, aperiodic channel state information may not be transmitted through the PUSCH from the subframe in which the PUCCH SCell is inactivated to the subframe n + 7.

Each of the embodiments described above may be used individually or in combination with each other. In addition, the information necessary to perform the above-described operation may be transmitted to the terminal through the RRC message to the terminal, or may be set in advance in the terminal and the base station.

Meanwhile, in the above-described embodiments, a subframe in which the PUCCH SCell is activated or a subframe performing actions corresponding to activation of the PUCCH SCell may be dynamically determined according to minimum requirements. Alternatively, the subframe may be set to a fixed value (eg, n + 24 or n + 34) to reduce the complexity between the terminal and the base station. Alternatively, the subframe may be set to a fixed value shared through the RRC message.

Likewise, in the above-described embodiments, a subframe deactivated or a subframe performing actions corresponding to deactivation may have a value that varies according to a minimum requirement. Or, it may have a fixed value (eg, n + 8) to reduce the complexity between the terminal and the base station. Or, it may be configured to have a fixed value in order to reduce the complexity between the terminal and the base station through the RRC message.

The operation of the base station to which the present invention described above can be applied will be described again with reference to the drawings.

Referring to FIG. 4, in a method of receiving channel state information, a base station uses a single primary cell (PCell) and a plurality of secondary cells (SCell) controlled by the base station to provide a terminal and a carrier. Comprising the step of configuring the merge (S410). The base station may configure carrier aggregation with the terminal using a plurality of cells controlled by the base station. For example, the base station may configure one PCell and a plurality of SCells in the terminal to perform communication according to carrier aggregation. Alternatively, when the terminal configures dual connectivity, the base station may serve as a master base station to communicate with the terminal using a plurality of cells. Alternatively, when the terminal configures the dual connectivity ratio, the base station may serve as the secondary base station to communicate with the terminal through a plurality of cells. Meanwhile, when the base station configures carrier aggregation using a plurality of cells, one cell is configured as a PCell and the other cell is configured as an SCell. The base station may transmit information necessary for configuring carrier aggregation with the terminal to the terminal. For example, the base station may transmit information about cells constituting carrier aggregation to the terminal.

In addition, the base station includes transmitting higher layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function to at least one of the plurality of secondary cells (S420). . When the base station configures carrier aggregation using one PCell and a plurality of SCells, the base station may transmit configuration information for configuring at least one cell of the SCells as a PUCCH SCell. That is, when configuring the carrier aggregation in the terminal using more than five cells, the base station may be configured to configure the PUCCH transmission function by additionally selecting at least one SCell except for the PCell providing the conventional PUCCH transmission function. . To this end, the base station transmits configuration information including information on the SCell constituting the PUCCH transmission function to the terminal. The above configuration information may be transmitted through higher layer signaling (eg, RRC signaling). Meanwhile, when the PUCCH SCell is configured, each of the plurality of secondary cells except the PUCCH SCell may be configured to be mapped to any one group of the primary PUCCH group and the secondary PUCCH group. In this case, at least one secondary cell mapped to the primary PUCCH group transmits uplink control information including channel state information through the primary cell (PCell), and at least one secondary cell mapped to the secondary PUCCH group is a PUCCH SCell. The uplink control information including the channel state information can be transmitted through. To this end, the base station may additionally transmit information on one or more secondary cells mapped to the secondary PUCCH group through higher layer signaling. The PUCCH SCell may be configured with two or more, and each SCell may be configured to transmit uplink control information through any one PUCCH SCell of two or more PUCCH SCell and PCell.

In addition, the base station includes the step of transmitting the MAC control element including the activation status indication information for the PUCCH SCell configured uplink control channel transmission function (S430). Since the PUCCH SCell is also a SCell, a state change may be applied. For example, the PUCCH SCell may be configured in an activated state or an inactive state, and a state change may be performed. To this end, the base station may transmit the activation state indication information indicating the activation state for the PUCCH SCell to the terminal. The activation state indication information may be transmitted through a MAC control element. The base station may transmit indication information for indicating the activation state for the other SCell except the PUCCH SCell. Indication information for indicating an activation state for the PUCCH SCell and other SCells may be transmitted at the same time.

In addition, the base station includes receiving channel state information on the PUCCH SCell after the PUCCH SCell is activated according to the activation state indication information (S440). The UE may change the PUCCH SCell to an activation state according to the activation state indication information. Alternatively, the terminal may change the PUCCH SCell to an inactive state when the activation state indication information indicates inactivation. For example, when the activation state indication information is received in subframe number n, the UE may change the corresponding PUCCH SCell into an activation state in the eighth subframe after n. The activation state change timing of the PUCCH SCell may be preset. For example, when the activation state indication information is received in subframe n, the terminal may be changed to the activation state in a period from subframe n + 8 to subframe n + 24 (or n + 34).

The base station receives the channel state information transmitted after the PUCCH SCell is activated. For example, the base station does not receive channel state information when the PUCCH SCell is in an inactive state, and receives channel state information only when the PUCCH SCell is changed to an active state according to the activation state indication information. The timing at which the channel state information is transmitted may be set to be the same as the activation timing of the PUCCH SCell, or may be set to any interval after the PUCCH SCell is switched to the activated state.

On the other hand, when the PUCCH SCell is configured in an inactive state, SCells included in the secondary PUCCH group transmitting channel state information through the corresponding PUCCH SCell may also be configured in an inactive state. That is, the SCells included in the secondary PUCCH group may be determined whether to change the activation state according to the activation state of the PUCCH SCell configured in the secondary PUCCH group. In other words, when the PUCCH SCell is configured to be in an inactive state, the SCells of the secondary PUCCH group are also configured to be in an inactive state. To this end, the base station may determine the change of the activation state of the PUCCH SCell in consideration of the activation states of the SCells of the secondary PUCCH group. Alternatively, the base station may determine the change of the activation state for the SCells of the secondary PUCCH group in consideration of the activation state of the PUCCH SCell.

In addition, the PUCCH SCell may be changed without applying the secondary cell deactivation timer when the deactivation state is changed from the deactivation state. In contrast, the SCells included in the secondary PUCCH group are applied to the secondary cell deactivation timer when the deactivation state is changed from the deactivation state to the deactivation state when the secondary cell deactivation timer expires. Thus, unlike the other SCells, the PUCCH SCell may change its activation state only under the control of the base station. The secondary cell deactivation timer may be configured in advance in the terminal or according to the setting of the base station, and the SCells may be started by applying the configured secondary cell deactivation timer to the activated state except for the PUCCH SCell.

As described above, the present invention provides a specific method for applying activation / deactivation to a PUCCH SCell and a method for effectively controlling the activation or deactivation timing of the SCell between the terminal and the base station in transmitting the PUCCH through the SCell. It works.

A terminal and a base station apparatus that can perform all the operations of the present invention described with reference to FIGS. 1 to 4 will now be described.

Referring to FIG. 5, the terminal 500 includes a control unit 510 configuring carrier aggregation using one primary cell (PCell) and a plurality of secondary cells (SCell) controlled by a base station. Receive upper layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one of a plurality of secondary cells, and transmit an uplink control channel using the configuration information Receiving unit 530 for receiving the MAC control element including the activation status indication information for the PUCCH SCell configured function and the transmitter 520 for transmitting the channel status information on the PUCCH SCell after the PUCCH SCell is activated according to the activation status indication information ).

In addition, the control unit 510 controls the activation or deactivation operation for the PUCCH SCell, and transmits the channel state information according to the activation or deactivation timing when the terminal required to perform the above-described present invention transmits the PUCCH through the SCell. It controls the overall operation of the terminal according to. In addition, the controller 510 configures a carrier merge or dual connectivity with the base station, configures the PUCCH SCell using configuration information or indication information received from the base station, and changes the activation state of the PUCCH SCell. Control terminal operation.

The transmitter 620 transmits uplink control information including channel state information to the base station through the PUCCH SCell or PCell. In addition, the transmitter 620 transmits uplink data and a message to the base station through the corresponding channel.

Receiving unit 610 is a high-layer signaling or MAC signaling (carrier merge configuration information for configuring the carrier aggregation from the base station or configuration information for configuring the PUCCH SCell or indication information for changing the activation state of the SCell configured in the terminal) For example, it may be received through the MAC control element. In addition, the receiver 610 receives downlink control information, data, and a message from a base station through a corresponding channel.

Referring to FIG. 6, the base station 600 uses a single primary cell (PCell) and a plurality of secondary cells (SCells) controlled by the base station to configure a carrier merge with the terminal. And upper layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function to at least one of the plurality of secondary cells, and configured to transmit an uplink control channel. Transmitter 620 for transmitting the MAC control element including the activation status indication information for the PUCCH SCell, and receiving unit 630 for receiving channel status information on the PUCCH SCell after the PUCCH SCell is activated according to the activation status indication information. do.

The control unit 610 controls the activation or deactivation operation for the PUCCH SCell and the UE for transmitting the PUCCH through the SCell to receive the channel state information according to the activation or deactivation timing. Control the overall operation of the base station according to. In addition, the controller 610 may configure carrier aggregation or dual connectivity in the terminal and select or determine a PUCCH SCell.

The transmitter 620 may include carrier aggregation configuration information for configuring carrier aggregation, configuration information for configuring a PUCCH SCell, or indication information for changing an activation state of an SCell configured in the terminal. For example, it may be transmitted through the MAC control element.

The receiver 630 receives uplink control information including channel state information from a terminal through a PUCCH SCell or a PCell.

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

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

CROSS-REFERENCE TO RELATED APPLICATIONCROSS-REFERENCE TO RELATED APPLICATION

This patent application is filed with the Korean Patent Application No. 10-2015-0032665 filed in Korea on March 09, 2015 and Patent Application No. 10-2016-0021712 filed in Korea on February 24, 2016. Priority is claimed under section (a) (35 USC § 119 (a)), all of which is incorporated by reference in this patent application. In addition, if this patent application claims priority for the same reason for countries other than the United States, all its contents are incorporated into this patent application by reference.

Claims

In the method for the terminal constituting the carrier merge transmits the channel state information,

Configuring a carrier aggregation using one primary cell (PCell) and a plurality of secondary cells (SCell) controlled by a base station;

Receiving higher layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one of the plurality of secondary cells;

Receiving a MAC control element including activation status indication information on a PUCCH SCell configured with the uplink control channel transmission function using the configuration information; And

And transmitting channel state information on the PUCCH SCell after the PUCCH SCell is activated according to the activation state indication.
The method of claim 1,

Each of the plurality of secondary cells except for the PUCCH SCell,

Mapped to any one of a primary PUCCH group and a secondary PUCCH group,

At least one secondary cell mapped to the primary PUCCH group transmits channel state information through the primary cell, and at least one secondary cell mapped to the secondary PUCCH group transmits channel state information through the PUCCH SCell. How to feature.
The method of claim 2,

The higher layer signaling,

And information about the one or more secondary cells mapped to the secondary PUCCH group.
The method of claim 1,

If the PUCCH SCell is in an inactive state,

At least one secondary cell for transmitting channel state information through the PUCCH SCell is configured to be in an inactive state.
The method of claim 1,

The PUCCH SCell,

And change to an activated state without applying a secondary cell deactivation timer.
In the method for the base station to receive the channel status information,

Configuring a carrier merge with a terminal using one primary cell (PCell) and a plurality of secondary cells (SCell) controlled by a base station;

Transmitting higher layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function to at least one of the plurality of secondary cells;

Transmitting a MAC control element including activation state indication information on a PUCCH SCell configured with the uplink control channel transmission function; And

And receiving channel status information on the PUCCH SCell after the PUCCH SCell is activated according to the activation status indication.
The method of claim 6,

Each of the plurality of secondary cells except for the PUCCH SCell,

Mapped to any one of a primary PUCCH group and a secondary PUCCH group,

At least one secondary cell mapped to the primary PUCCH group transmits channel state information through the primary cell, and at least one secondary cell mapped to the secondary PUCCH group transmits channel state information through the PUCCH SCell. How to feature.
The method of claim 7, wherein

The higher layer signaling,

And information about the one or more secondary cells mapped to the secondary PUCCH group.
The method of claim 6,

If the PUCCH SCell is in an inactive state,

At least one secondary cell for transmitting channel state information through the PUCCH SCell is configured to be in an inactive state.
The method of claim 6,

The PUCCH SCell,

And change to an activated state without applying a secondary cell deactivation timer.
In the terminal for transmitting the channel state information,

A control unit for configuring carrier aggregation using one primary cell (PCell) and a plurality of secondary cells (SCell) controlled by a base station;

Receive upper layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function in at least one of the plurality of secondary cells, and uses the configuration information to receive the uplink A receiving unit for receiving a MAC control element including activation status indication information on a PUCCH SCell configured with a control channel transmission function; And

And a transmitter configured to transmit channel state information on the PUCCH SCell after the PUCCH SCell is activated according to the activation state indication information.
The method of claim 11,

Each of the plurality of secondary cells except for the PUCCH SCell,

Mapped to any one of a primary PUCCH group and a secondary PUCCH group,

At least one secondary cell mapped to the primary PUCCH group transmits channel state information through the primary cell, and at least one secondary cell mapped to the secondary PUCCH group transmits channel state information through the PUCCH SCell. Terminal characterized in that.
The method of claim 12,

The higher layer signaling,

And a terminal comprising information on the one or more secondary cells mapped to the secondary PUCCH group.
The method of claim 11,

If the PUCCH SCell is in an inactive state,

At least one secondary cell for transmitting channel state information through the PUCCH SCell is configured to be in an inactive state.
The method of claim 11,

The PUCCH SCell,

And a terminal is changed to an activated state without applying the secondary cell deactivation timer.
In the base station for receiving the channel status information,

A control unit for configuring carrier aggregation with a terminal using one primary cell (PCell) controlled by a base station and a plurality of secondary cells (SCell);

Transmitting upper layer signaling including configuration information for configuring a physical uplink control channel (PUCCH) transmission function to at least one of the plurality of secondary cells, and configured to transmit the uplink control channel A transmitter for transmitting a MAC control element including activation status indication information on the PUCCH SCell; And

And a receiver configured to receive channel state information on the PUCCH SCell after the PUCCH SCell is activated according to the activation state indication information.
The method of claim 16,

Each of the plurality of secondary cells except for the PUCCH SCell,

Mapped to any one of a primary PUCCH group and a secondary PUCCH group,

At least one secondary cell mapped to the primary PUCCH group transmits channel state information through the primary cell, and at least one secondary cell mapped to the secondary PUCCH group transmits channel state information through the PUCCH SCell. Characterized by a base station.
The method of claim 17,

The higher layer signaling,

And a base station including information on the one or more secondary cells mapped to the secondary PUCCH group.
The method of claim 16,

If the PUCCH SCell is in an inactive state,

At least one secondary cell for transmitting channel state information through the PUCCH SCell is configured to be in an inactive state.
The method of claim 16,

The PUCCH SCell,

The base station is changed to the active state without applying the secondary cell deactivation timer.