KR101587508B1 - Method for Controlling Uplink Power with Terminal and Terminal thereof - Google Patents

Abstract

The present invention relates to a method and apparatus for multiplexing an uplink channel transmitted in an uplink and an uplink reference signal under a carrier aggregation and controlling uplink power.

Description

[0001] The present invention relates to an uplink power control method for a terminal,

The present invention relates to a method and apparatus for multiplexing an uplink channel transmitted in an uplink and an uplink reference signal under a carrier aggregation and controlling uplink power.

Under the carrier aggregation in which signals are transmitted and received through two or more elementary carriers, when the terminal transmits the uplink data, the control channel, and the uplink signal to the transmission / reception point simultaneously to the transmission / reception point, The transmit timing advance (TA) value is applied equally to all different element carriers or all different serving cells with a single value.

However, when the transmission TA value of the UE is indicated multiple times, a multiplexing method or a power control method between uplink channels applied in a single TA between different elementary carrier cells or serving cell groups It needs to be applied differently.

In one aspect, the invention provides a method comprising: configuring multiple TAGs (Timing Advanced Groups); And setting a resource symbol for a PUSCH to not map to a last symbol of a subframe transmitting a PUSCH when simultaneously transmitting SRS (Sounding Reference Signal) and PUSCH (Physical Uplink Shared Channel) on the same cell And provides an uplink power control method.

In another aspect, the present invention provides a method comprising: configuring multiple TAGs (Timing Advanced Groups); When transmitting SRS (Sounding Reference Signal) and PUSCH (Physical Uplink Shared Channel) / PUCCH (Physical Uplink Control Channel) on other cells simultaneously, it is possible to transmit SRS and PUCCH / And dropping the SRS in a subframe transmitting the SRS if the transmission power exceeds a maximum allowable transmission power (P _CMAX ) of the UE.

In another aspect, the present invention provides a method comprising: configuring multiple TAGs (Timing Advanced Groups); And when the total transmission power exceeds the maximum allowable transmission power (P _CMAX ) of the UE in the overlapping part of symbols transmitting SRS and SRS on other cells when simultaneously transmitting SRSs and SRSs on other cells And setting the transmission power of the SRS by performing the same scaling.

According to another aspect of the present invention, there is provided a communication system comprising: a receiving unit for receiving configuration information constituting multiple TAGs; And a controller configured to set resource elements for PUSCH not to be mapped in a last symbol of a subframe transmitting a PUSCH when multiple TAGs are configured and SRS and PUSCH are simultaneously transmitted on the same cell.

According to another aspect of the present invention, there is provided a communication system comprising: a receiving unit for receiving configuration information constituting multiple TAGs; And multiple TAGs are configured and SRS and PUCCH / PUCCH are transmitted on different cells when SRS (Sounding Reference Signal) and PUSCH (Physical Uplink Shared Channel) / PUCCH (Physical Uplink Control Channel) And to drop the SRS in the subframe transmitting the SRS if the total transmission power exceeds the maximum allowed transmission power (P _CMAX ) of the UE in the overlapped portion.

According to another aspect of the present invention, there is provided a communication system comprising: a receiving unit for receiving configuration information constituting multiple TAGs; And when multiple TAGs are configured and the total transmit power in the overlapping portion of the symbols transmitting SRS and SRS on different cells exceeds the maximum allowed transmit power of the terminal (P _CMAX ) when simultaneously transmitting SRS and SRS on different cells And performs the same scaling to set the transmission power of the SRS.

1 shows an example of a wireless communication system to which embodiments are applied.
FIG. 2 is a diagram illustrating a HARQ ACK / NACK and CSI concurrent transmission structure using PUCCH format 2.
3 is a conceptual diagram of an uplink data channel / control channel and an SRS when a single TA is applied.
FIG. 4 is a diagram illustrating a case in which when a transmission TA value of a UE is indicated in multiple, a symbol overlapping between an SRS and an uplink data channel / control channel between different elementary carrier cells or serving cell groups ) Or a collision.
5 is a flowchart of an uplink power control method of a UE according to the first embodiment.
6 is a conceptual diagram of an uplink power control method of a UE according to the first embodiment.
FIG. 7 is a flowchart of a method of uplink power control of a UE according to the second embodiment.
8 is a conceptual diagram of a power control method of a terminal according to the second embodiment.
9 is a flowchart of an uplink power control method of a UE according to the third embodiment.
10 is a conceptual diagram of a UL power control method of a UE according to the third embodiment.
11 is a system flow diagram of an uplink power control method according to another embodiment.
12 is a diagram illustrating a configuration of a transmission / reception point according to another embodiment of the present invention.
13 is a diagram illustrating a configuration of a user terminal according to another embodiment of the present invention.

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

The wireless communication system in the present invention is widely deployed to provide various communication services such as voice, packet data and the like. A wireless communication system includes a user equipment (UE) and a transmission / reception point. The user terminal in this specification is a comprehensive concept of a terminal in wireless communication. It is a comprehensive concept which means a mobile station (MS), a user terminal (UT), an SS (User Equipment) (Subscriber Station), a wireless device, and the like.

A base station (BS) or a cell, a Node-B, an evolved Node-B (eNB), a sector (Sector) ), A site, a base transceiver system (BTS), an access point, a relay node, a remote radio head (RRH), a radio unit (RU), and an antenna.

That is, in the present specification, a transmission / reception point or a base station and a cell are comprehensive (eg, a base station controller) in a CDMA base station controller, a WCDMA NodeB, an eNB in a LTE or a sector It is meant to encompass various coverage areas such as megacels, macrocells, microcells, picocells, femtocells and relay nodes, remote radio heads (RRH), and radio range (RU) to be.

In this specification, a user terminal and a transmission / reception point are used in a generic sense as two transmitting and receiving subjects used to implement the technical or technical idea described in the present specification, and are not limited by a specific term or word. The user terminal and the transmission / reception point are used in a broad sense as two (uplink or downlink) transmission / reception subjects used to implement the technical or technical idea described in the present invention, and are not limited by a specific term or word. Here, an uplink (UL, or uplink) means a method of transmitting / receiving data to / from a base station by a user terminal, and a downlink (DL or downlink) .

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

A TDD (Time Division Duplex) scheme in which uplink and downlink transmissions are transmitted using different time periods, or an FDD (Frequency Division Duplex) scheme in which they are transmitted using different frequencies can be used.

In systems such as LTE and LTE-A, the uplink and downlink are configured on the basis of one carrier or carrier pair to form a standard. The uplink and downlink transmit control information through a control channel such as a Physical Downlink Control Channel (PDCCH), a Physical Control Format Indicator CHannel (PCFICH), a Physical Hybrid ARQ Indicator CHannel (PHICH), and a Physical Uplink Control CHannel And a data channel such as a Physical Downlink Shared CHannel (PDSCH), a Physical Uplink Shared CHannel (PUSCH), and the like. In this specification, the PDCCH is a concept including an ePDCCH.

In this specification, a cell refers to a component carrier having a coverage of a signal transmitted from a transmission point or a transmission point or transmission / reception point of a signal transmitted from a transmission / reception point, and a transmission / reception point itself . Herein, the transmission / reception point means a transmission point for transmitting a signal or a reception point for receiving a signal or a transmission / reception point thereof.

In this specification, HARQ ACK / NACK means Hybrid ACK / NACK acknowledge. CSI means channel status information such as RI (Rank Indicator), PMI (Precoding Matrix Indicator) and CQI (Channel Quality Indicator), or channel status information report.

1 shows an example of a wireless communication system to which embodiments are applied.

Referring to FIG. 1, a wireless communication system 100 to which embodiments are applied includes a coordinated multi-point transmission / reception system (CoMP system) in which two or more transmission / reception points cooperatively transmit signals, A coordinated multi-antenna transmission system, and a cooperative multi-cell communication system. The CoMP system 100 may include at least two transmit and receive points 110 and 112 and terminals 120 and 122.

The transmission / reception point is connected to a base station or a macro cell (macro cell or macro node, hereinafter referred to as 'eNB' or first transmission / reception point) and an optical cable or an optical fiber to the first transmission / reception point 110, Or at least one pico cell 112 (hereinafter, referred to as 'RRH' or second transmission / reception point) having a low transmission power within a macro cell region. The first transmission / reception point 110 and the second transmission / reception point 112 may have the same cell ID or different cell IDs.

Hereinafter, a downlink refers to a communication or communication path from the transmission / reception point 110 or 112 to the terminal 120, and an uplink refers to communication from the terminal 120 to the transmission / reception point 110 or 112 Or a communication path. In the downlink, the transmitter may be part of the transmission / reception point 110, 112, and the receiver may be part of the terminal 120, 122. In the uplink, the transmitter may be part of the terminal 120, and the receiver may be part of the transmission / reception point 110, 112.

Hereinafter, a situation in which a signal is transmitted / received through a channel such as PUCCH, PUSCH, PDCCH, and PDSCH is expressed as 'PUCCH, PUSCH, PDCCH and PDSCH are transmitted and received'.

The first transmission / reception point 110, which is one of the transmission / reception points 110 and 112, can perform downlink transmission to the terminals 120 and 122. The first transmission / reception point 110 transmits downlink control information such as a physical downlink shared channel (PDSCH), which is a primary physical channel for unicast transmission, and scheduling required for reception of the PDSCH, A physical downlink control channel (PDCCH) for transmitting scheduling grant information for transmission of a link data channel (e.g., a Physical Uplink Shared Channel (PUSCH)). A description will be given of the transmission / reception of a signal through each channel in a form in which the corresponding channel is transmitted / received.

The first terminal 120 (UE1) may transmit the uplink signal to the first transmission / reception point 110. [ The second terminal 122 and the UE2 may transmit the uplink signals to the second transmission / reception point 112 of the transmission / reception points 110 and 112. At this time, the first terminal 120 may transmit the uplink signal to the second transmission / reception point 112 and the second terminal 122 may transmit the uplink signal to the first transmission / reception point 110. The number of terminals may be two or more. In the following example, the number of terminals is two, one terminal transmits a first transmission / reception point 110, and the other terminal transmits an uplink signal to a second transmission / reception point 112.

The first terminal 120 transmits the uplink signal to the first transmission / reception point 110 and the second terminal 122 transmits the uplink signal to the second transmission / reception point 112, as described below with reference to the drawings. Lt; / RTI >

In a wireless communication system, a UE transmits an uplink demodulation signal (UL DMRS or UL DM-RS) for each slot in order to grasp channel information for demodulating a data channel in an uplink transmission. In the uplink DM-RS associated with the PUSCH (Physical Uplink Shared CHannel), a reference signal is transmitted for one symbol in each slot. In the case of the uplink DM-RS associated with the PUCCH (Physical Uplink Control CHannel) In the case of PUCCH format 1 / 1a / 1b according to the type, 3 symbols are transmitted for every slot or 2 symbols are transmitted for every 2 slots in case of PUCCH format 2 / 2a / 2b / 3.

The physical uplink control channel (PUCCH) used as the uplink control channel is classified according to the type of information transmitted from the terminal as shown in the following table.

PUCCH format Modulation scheme

Number of bits per subframe ,

One N / A N / A 1a BPSK One 1b QPSK 2 2 QPSK 20 2a QPSK + BPSK 21 2b QPSK + QPSK 22 3 QPSK 48

The PUCCH format 1 / 1a / 1b may be used for SR (scheduling request) and HARQ-ACK transmission. The PUCCH format 2 / 2a / 2b may be used for CQI (Channel Quality Indicator) / PMI (Precoding Matrix Indicator) / RI (Rank Indication) transmission. And, PUCCH format 3 can be used for multiple HARQ ACK / NACK transmission.

A description of the format of each PUCCH and its use will be given below.

That is, PUCCH format 1 is a channel format for transmitting only SR (Scheduling Request). The PUCCH format 1a / 1b is a channel for transmitting an ACK / NACK for a Scheduling Request (SR) and / or a downlink data channel, and is divided into a format 1a / 1b according to the number of bits of ACK / NACK and a modulation scheme . Meanwhile, the shortened PUCCH format 1a / 1b is a format in which the last SC-FDMA symbol of one subframe is punctured in the PUCCH format 1a / 1b that transmits ACK / NACK. Whether or not the format is used is determined by the RRC parameter according to the instruction of the upper layer of the transmission / reception point, whether the ackNackSRS-SimultaneousTransmission is TRUE / FALSE, and the cell-specific information configuration of the SRS.

PUCCH Format 2 is a channel format for transmitting only CQI. PUCCH format 2a / 2b is a channel for transmitting ACK / NACK for CQI + downlink data channel, and is divided into 2a / 2b according to the number of bits of ACK / NACK and the modulation method.

PUCCH format 3 is a channel for transmitting ACK / NACK of 4 bits or more under the downlink carrier aggregation. Shortened PUCCH format 3 is a format in which the last SC-FDMA symbol of one subframe is punctured (i.e., resource elements are not mapped) in PUCCH format 3 transmitting ACK / NACK. Whether or not the format is used is determined by the RRC parameter according to the instruction of the upper layer of the transmission / reception point, whether the ackNackSRS-SimultaneousTransmission is TRUE / FALSE, and the cell-specific information configuration of the SRS.

Meanwhile, a demodulation reference signal (DMRS, DM-RS) and a sounding reference signal (SRS) are defined in the uplink in the LTE communication system, which is one of the current wireless communication schemes. (RS), and a cell specific reference signal (CRS), an MBSFN reference signal (MBSFN-RS) And a UE-specific reference signal.

The uplink SRS is used for measuring the uplink channel state for uplink frequency dependent scheduling or for measuring the uplink / downlink channel state for downlink beamforming using channel reciprocity in the TDD system. In the case of a sounding reference signal, parameters for generating an SRS transmitted from an arbitrary transmission / reception point or an arbitrary cell to a UE in the wireless communication system 100, for example, a cell-specific SRS band of SRS (SRS) bandwidth, a transmission comb (2 frequency sub-carriers assigned to subcarrier spacing intervals such as 0 (even subcarriers) or 1 (odd subcarriers) specific SRS bandwidth, hopping related configuration parameters, frequency domain position, periodicity, subframe configuration (SRS in some subframes, (The number of antennas to transmit SRS, the number of antenna ports), the base sequence index (the SRS sequence index for generating the corresponding SRS is set to the sequence group number u used in the PUCCH and the sequence hopping configuration) And the cyclic shift index (cyclic shift index as a reference signal used for generating the SRS) and the like are transmitted to the terminal 120 as the RRC parameter, and the terminal 120 transmits the cyclic shift index (determined according to the determined sequence number v) And receives the corresponding information and transmits the uplink SRS.

In addition, aperiodic SRS is defined with periodic SRS. Similar to the periodic SRS, the aperiodic SRS also includes various parameters used for generating the aperiodic SRS, such as parameters for generating aperiodic SRS transmitted by the terminal, such as used in the wireless communication system 100, An arbitrary transmission / reception point is transmitted as an RRC parameter to the UE 120, such as a UE-specific SRS band, a transmission comb, a frequency domain position, a period, a subframe configuration, an antenna configuration, a base sequence index, and a cyclic shift index of an aperiodic SRS do.

In order to transmit the aperiodic SRS, any transmission / reception point dynamically transmits the aperiodic SRS through the PDCCH to the terminal 120, and the terminal 120 receives triggering and RRC parameters by the PDCCH, And transmits aperiodic SRS.

Hereinafter, the operation of the UE in a case where simultaneous transmission of the uplink PUCCH and the sounding reference signal in one subframe is considered will be described.

In the case where simultaneous transmission of PUCCH and SRS is considered, the UE determines the format type of the PUCCH and the type of SRS, i.e., the periodic SRS (type-0 SRS, hereinafter referred to as 'periodic SRS' , 'Non-periodic SRS'), and the operation under a situation where a multi-element carrier is introduced is defined separately.

The periodic SRS and aperiodic SRS and the operation method of the UE according to each PUCCH format type are as follows.

i) If the PUCCH format 2 / 2a / 2b and periodic SRS occur simultaneously in the same subframe, the UE does not transmit periodic SRS.

ii) PUCCH format with ACK / NACK The UE does not transmit aperiodic SRS when concurrent transmissions occur in the same subframe with 2 / 2a / 2b and aperiodic SRS.

iii) When PUCCH format 2 without ACK / NACK and aperiodic SRS occur in the same subframe simultaneously, the terminal does not transmit PUCCH format 2.

iv) If a concurrent transmission occurs in the same subframe between the PUCCH format carrying ACK / NACK and SR, or both, and SRS (regardless of periodic SRS, aperiodic SRS), if ackNackSRS- If SimulataneousTransmission is FALSE, the terminal does not transmit SRS.

v) If a shortened PUCCH format that carries either ACK / NACK and positive SR, or both, and SRS (irrespective of periodic SRS, aperiodic SRS) occurs simultaneously in the same subframe, If ackNackSRS-SimulataneousTransmission is TRUE, the terminal transmits both shortened PUCCH format and SRS.

vi) PUCCH format that carries either positive ACK / NACK and positive SR, or both, and SRS (irrespective of periodic SRS or aperiodic SRS) in any serving cell are simultaneously transmitted in the same subframe using the normal PUCCH format The SRS is not transmitted.

vii) ackNackSRS-SimultaneousTransmission provided in the upper layer as the RRC parameter is a parameter for determining that the UE sets HARQ ACK / NACK on the PUCCH and simultaneous transmission of SRS in the same subframe. If it is set to support simultaneous transmission of HARQ ACK / NACK and SRS on a PUCCH in one subframe, the corresponding subframe may be allocated to a cell-specific SRS subframe in the first cell (primary cell) The UE simultaneously transmits HARQ ACK / NACK and SRS using the shortened PUCCH format. At this time, the shortened PUCCH format is used regardless of whether the SRS is transmitted in the corresponding subframe. Otherwise, the terminal performs transmission of HARQ ACK / NACK and SRS using the normal PUCCH format 1 / 1a / 1b or the normal PUCCH format 3.

Hereinafter, the operation of the UE in a case where simultaneous transmission of ACK / NACK and periodic CSI is considered in the uplink PUCCH within one subframe will be described.

FIG. 2 is a diagram illustrating a HARQ ACK / NACK and CSI concurrent transmission structure using PUCCH format 2.

Referring to FIG. 2 (a), when transmitting a HARQ ACK / NACK and a CSI simultaneously in the PUCCH format 2 in the normal CP, the CSI transmission information is subjected to block coding and QPSK modulation, and there are 10 symbols per subframe The first five symbols are transmitted in the first slot and the remaining five symbols are transmitted in the second slot.

There are 7 DFTS-OFDM symbols per slot. Two of the seven DFTS-OFDM symbols of each slot are used for uplink DM-RS transmission. When HARQ ACK / NACK and CSI are simultaneously transmitted, the second DM-RS symbol in each slot is modulated by HARQ ACK / NACK. BPSK or QPSK modulation is used depending on whether the information being fed back is one or two HARQ ACK / NACK bits. Each of the QPSK symbols and DM-RS symbols transmitted in the five symbols of each slot is multiplied by a cell-specific sequence of cyclic-shifted length 12 and the result of the second symbol modulated by HARQ ACK / NACK is And is transmitted to the corresponding DFTS-OFDM symbol.

 Referring to FIG. 2B, in the case of the extended CP, the same structure is used for an extended CP having six DFTS-OFMS symbols per slot, but there is only one uplink DM-RS symbol per slot. CSI transmission information and HARQ ACK / NACK are subjected to block coding and QPSK modulation, there are 10 symbols per subframe. The first 5 symbols are transmitted in the first slot and the remaining 5 symbols are transmitted in the second slot . Each QPSK symbol transmitted in five symbols of each slot is multiplied by a cell-specific sequence of cyclic shifted length 12 and the result is transmitted to the corresponding DFTS-OFDM symbol.

For example, the simultaneousAckNackAndCQI provided in the upper layer as an RRC parameter is a parameter for determining whether the UE sets HARQ ACK / NACK and periodic CSI simultaneously in the same subframe. When the HARQ ACK / NACK and periodic CSI are configured to be simultaneously transmitted in one subframe, the UE can simultaneously transmit HARQ ACK / NACK and periodic CSI using the PUCCH format 2a / 2b in the corresponding subframe.

Hereinafter, a case where there is a power limited case of the UE and a case where there is no power limitation of the UE (non-power limited case) will be described below between the uplink transport channels, The method for power control between sounding reference signals and between sounding reference signals is described.

를 넘는 경우에는 단말은 서빙 셀(serving cell, c)를 위한 PUSCH의 전송 전력을 결정함에 있어서 PUCCH의 전력을 우선시 하도록 설정하고 나머지 전송 전력에 대해서 PUSCH의 전송 전력을 0과 1사이의 값으로 스케일링을 수행하여 해당 PUSCH의 전송 전력을 결정한다. If the sum of the total transmission powers of the terminals for the terminals that are configured to simultaneously transmit PUCCH and PUSCH is

The UE sets the PUCCH power to be prioritized in determining the transmission power of the PUSCH for the serving cell c and scans the transmission power of the PUSCH to a value between 0 and 1 for the remaining transmission power To determine the transmission power of the corresponding PUSCH.

을 스케일링을 수행한다.
In the above situation, the UE determines the transmission power of the corresponding PUSCH according to the following equation. The UE determines the serving cell for the serving cell in the subframe i so that the condition of Equation (1)

To perform scaling.

[Equation 1]

는

의 선형값(linear value)이고

는

의 선형 값이고

은 서브프레임 i에 대해 단말에 구성된 총 최대전송전력

(UE total configured maximum output power

)의 선형 값이고

는

으로 서빙 셀 c에 대한

의 스케일링 요소(scaling factor)이다. 이때 서브프레임 i에서 PUCCH 미전송시

이다.
In Equation (1)

The

Is a linear value of

The

≪ / RTI >

≪ / RTI > is the total maximum transmit power < RTI ID = 0.0 >

(UE total configured maximum output power

) ≪ / RTI >

The

Lt; RTI ID = 0.0 >

Lt; / RTI > scaling factor. At this time, when the PUCCH is not transmitted in the subframe i

to be.

를 넘는 경우에는 단말에서 서로 다른 요소 반송파 또는 서로 다른 서빙 셀에서 전송되는 PUSCH 들간의 전송 전력을 결정함에 있어서는 해당 PUSCH가 포함하는 정보가 UCI(Uplink Control Information)를 포함하고 있느냐의 여부에 따라 UCI를 가지는 PUSCH를 전송하는 서빙 셀 또는 요소 반송파를 우선하여 PUSCH 전송 전력을 할당하도록 하고 나머지 서빙 셀(들) 또는 요소 반송파들간에 동일한 스케일링 요소(scaling factor)를 가지고 스케일링을 수행하여 PUSCH 전송 전력을 결정하게 된다. 여기서 특정 서빙 셀(들) 또는 요소 반송파에 대해서 스케일링 요소를 0으로 설정할 수도 있다. Meanwhile, when the sum of the total transmission power of the terminal is

, In determining the transmission power between the PUSCHs transmitted from different elementary carriers or different serving cells in the UE, it is necessary to determine the transmission power of the PUSCH according to whether the information included in the PUSCH includes UCI (Uplink Control Information) The PUSCH transmission power is assigned in preference to the serving cell or element carrier transmitting the PUSCH and the scaling is performed with the same scaling factor between the remaining serving cell (s) or the element carriers to determine the PUSCH transmission power do. Where the scaling factor may be set to zero for a particular serving cell (s) or element carrier.

를 초과하면 단말은 수학식 2의 조건이 만족되도록 서브프레임 i에서 UCI를 포함하지 않은 서빙 셀에 대한

를 스케일링을 수행한다.In the above situation, the UE determines the transmission power of the corresponding PUSCH according to the following equation. The UE performs PUSCH transmission including UCI on the serving cell j and PUSCH transmission not including UCI in the remaining serving cell (s), and the total transmission power of the UE

, The UE determines that the serving cell does not include the UCI in the subframe i so that the condition of Equation (2) is satisfied

To perform scaling.

&Quot; (2) "

는 UCI를 포함하는 셀에 대한 PUSCH 전송전력이고

는 UCI를 포함하지 않는 서빙 셀 c에 대한

의 스케일링 요소(scaling factor)이다. 이 경우에

이고 단말의 총 전송전력이

를 초과하지 않으면 전력 스케일링이

에 적용되지 않는다.

는

일 때 서빙 셀들 사이에서 동일하지만 특정 서빙 셀(들)에 대한

은 "0"일 수 있다.In Equation 2,

Is the PUSCH transmit power for the cell containing the UCI

Lt; / RTI > for a serving cell < RTI ID = 0.0 >

Lt; / RTI > scaling factor. In this case

And the total transmission power of the terminal is

Power scaling will be

.

The

Lt; RTI ID = 0.0 > (s) < / RTI > for a particular serving cell

May be "0 ".

를 넘는 경우에는 단말에서 서로 다른 요소 반송파 또는 서로 다른 서빙 셀에서 전송되는 UCI가 있는 PUCCH+PUSCH와 UCI가 없는 PUSCH 들간의 전송 전력을 결정함에 있어서는 가장 우선순위로 PUCCH의 전송 전력을 보장하도록 하고, 다음으로 UCI를 가지는 PUSCH의 전송 전력을 보장하도록 설정하며, 나머지 단말의 전송 전력에 대해서 나머지 서빙 셀(들) 또는 요소 반송파들 간에 동일한 스케일링 요소를 가지고 스케일링을 수행하여 PUSCH 전송 전력을 결정하게 된다. 여기서 특정 서빙 셀(들) 또는 요소 반송파에 대해서 스케일링 요소를 0으로 설정할 수도 있다. In other words, the sum of the total transmission power of the terminal

, In determining the transmission power between the PUCCH + PUSCH having the UCI and the PUSCH having no UCI transmitted from different elementary carriers or different serving cells in the mobile station, the transmission power of the PUCCH is guaranteed to be the highest priority, Next, the transmission power of the PUSCH having the UCI is guaranteed, and the transmission power of the remaining UE is scaled with the same scaling factor among the remaining serving cell (s) or the element carriers to determine the PUSCH transmission power. Where the scaling factor may be set to zero for a particular serving cell (s) or element carrier.

를 초과하지 않을 때 단말은 아래 수학식 3에 따라

_{를 획득할 수 있다.} In the above situation, the UE determines the transmission power of the corresponding PUSCH according to the following equation. The UE performs PUSCH transmission including PUCCH and UCI on the serving cell j, performs PUSCH transmission not including UCI in the remaining serving cell (s), and transmits the total transmission power of the UE

Lt; / RTI >< RTI ID = 0.0 >

_{Can be obtained.}

&Quot; (3) "

를 넘는 경우에는 단말에서 서로 다른 요소 반송파 또는 서로 다른 서빙 셀에서 전송되는 SRS들간의 전송 전력을 결정함에 있어서는 서빙 셀(들) 또는 요소 반송파들 간에 동일한 스케일링 요소를 가지고 스케일링을 수행하여 SRS의 전송 전력을 결정하게 된다. In other words, the sum of the total transmission power of the terminal

, In determining the transmission power between SRSs transmitted from different elementary carriers or different serving cells in a terminal, the scaling is performed with the same scaling factor between the serving cell (s) or the element carriers so that the transmission power of the SRS .

를 초과하면 단말은 수학식 4의 조건이 만족되도록 서브프레임 i에서 서빙 셀 c에 대한

를 스케일링할 수 있다.In the above-described situation, the UE determines the transmission power of corresponding SRSs by the following equation. The total transmit power of the terminal for SRS is

, The UE transmits the serving cell c for the serving cell c in the subframe i so that the condition of Equation

Can be scaled.

&Quot; (4) "

는

의 선형 값이고

는 서브프레임 i에서

의 선형 값이고 는

으로 서빙 셀 c에 대한

의 스케일링 요소이다. 이때

는 서빙 셀들 사이에서 동일할 수 있다.In Equation 4,

The

≪ / RTI >

In subframe i

Lt; RTI ID = 0.0 >

Lt; RTI ID = 0.0 >

Lt; / RTI > At this time

May be the same between serving cells.

Under the carrier aggregation, a UE transmits a transmission timing advance (TA) command from a transmission / reception point to a transmission / reception point when transmitting uplink data, a control channel and an uplink signal to a transmission / reception point at the same time, The value is applied equally to all the different element carriers or all the different serving cells with a single value. In a case where a single TA is applied, a multiplexing method and a power control method between UL channels are used as an operation method of a UE as described above.

The concurrent transmission of the uplink data channel / control channel and the SRS in the same symbol is not supported for the same element carrier or other element carriers. In this case, as shown in FIG. 3, when a single TA is applied, the symbol overlapping can be effectively avoided by the uplink data channel / control channel and the SRS.

However, in the case where the transmission TA value of the UE is multiplexed, a multiplexing method or a power control method between uplink channels applied in a single TA between different elementary carrier cells or serving cell groups It needs to be applied differently. That is, as the boundaries of the uplink SC-FDMA symbols in one subframe do not exactly coincide with each other between different elementary carrier cells or serving cell groups, Ambiguity occurs in transmitting the link data, the control channel, and the uplink signal, so that both the transmission / reception point and the terminal can not know how the operation of the terminal is performed.

In other words, as shown in FIG. 4, when the transmission TA value of the UE is indicated in multiple, the uplink data channel or the control channel between the different serving cell or the serving cell group and the SRS May cause symbol overlapping, overlapping within symbols, or collision problems. Also, when CC0 (Pcell) and CC1 (Scell) are composed of different TAGs (TAG0, TAG1), there may occur ambiguity in the uplink channel and signal transmission in the UE in areas 410 and 420, The ambiguity of the uplink channel and signal reception may occur even at the transmission / reception point.

Therefore, it is necessary to define the multiplexing method and the power control methods for the uplink data, the control channel, and the uplink signal transmitted by the UE when multiple TAGs (Timing Advanced Group) are configured.

The present invention relates to a method and an apparatus for multiplexing an uplink control channel and a sounding reference signal in a transmission and multiplexing method for a control channel for uplink transmission in a mobile station under carrier aggregation, Time Advanced Groups), a method for multiplexing and transmitting uplink control channels, a sounding reference signal, and a sounding reference signal, and a device therefor are provided.

Specifically, when there is an uplink control channel or uplink data channel and a sounding reference signal to be transmitted by the UE to different element carriers having multiple TAGs under carrier aggregation, It is necessary to define a new one.

At this time, in the present invention, when the multiple TAGs are configured, the behavior of the terminal is defined to ensure backward compatibility, and when there is no need to ensure backward compatibility, Can be defined.

In this case, even if the transmission / reception point is composed of multiple TAGs to the UE, if the UE is composed of two or more uplink component carriers in operation of the UE, the specific component carriers can have the same TAG. For example, when two uplink element carriers are composed of two, the element carrier waves can be set to have the same TAG. In another example, if the uplink component carriers are composed of three components, the two component carriers can be configured with the same TAG and the other component carrier with different TAGs.

Therefore, considering such a scenario, for the element carriers constituting the same TAG in the transmission of the uplink data channel and the uplink data channel, the uplink data channel and the sounding reference signal The operation of the terminal can be defined to follow the transmission method of the terminal.

In order to guarantee backward compatibility, since only a single TA is supported in the prior art, even if multiple TAGs are configured, for element carriers set to have the same TAG, the power limit The UE can set the operation of the UE according to a power limited situation and a non-power limited situation where the UE can transmit power.

1) In the case of the same TAG for different element carriers or in the case of full overlap even if different TAGs are used, the operation of the terminal in the case where there is power limitation and the PUCCH or the PUSCH and SRS are simultaneously transmitted, Can be defined as follows.

In the case of PUCCH + SRS, the non-periodic SRS can be set to be transmitted when the PUCCH format 2 overlaps with the aperiodic SRS transmission. Except for this case, the operation of the terminal can be defined to always drop the SRS.

If the PUSCH includes UCI for PUSCH + SRS, the power for the PUSCH including the UCI is preferentially guaranteed, and the remaining transmission power is used for transmission of the SRS. If there is no remaining transmission power, the SRS is used You can set it to drop.

In the case where PUCCH format 2 and non-periodic SRS transmission overlap for PUCCH + PUSCH + SRS, PUSCH and non-periodic SRS are set to be transmitted. For PUSCH and non-periodic SRS transmission power, if PUSCH includes UCI The power for the corresponding PUSCH can be preferentially secured and used for transmission of aperiodic SRS for the remaining transmission power.

In this case, regardless of whether the PUSCH includes the UCI, the PUSCH can be configured to puncture and transmit the last symbol of the corresponding subframe to which the SRS is to be transmitted, so as not to map the resource element for the PUSCH. In other words, when the UE is configured with multiple TAGs and simultaneously transmits the SRS and the PUSCH on the same cell, it can be configured not to map the resource element for the PUSCH to the last symbol of the subframe transmitting the PUSCH. The above-described embodiment will be described in detail later with reference to Figs. 5 and 6 as a first embodiment.

Except for this case, the operation of the terminal can be set to always drop the SRS. The corresponding subframe herein may be a UE-specific aperiodic SRS sub-frame or a cell-specific SRS sub-frame. Specifically, when a UE is configured with multiple TAGs and simultaneously transmits a Sounding Reference Signal (SRS) and a Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) on other cells, the SRS and the PUCCH / If the total transmission power in the overlapped part of the symbol transmitting the PUCCH exceeds the maximum allowed transmission power ( Pcmax ) of the UE (if the total transmission power exceeds Pcmax on the overlapped portion of the symbol) Can be dropped. The above-described embodiment will be described in detail later with reference to Figs. 7 and 8 as a second embodiment.

In case of SRS + SRS, the transmission power of the SRS can be set by performing scaling with the same scaling value so as to have the same terminal behavior as before. In particular, if the UE has multiple TAGs configured and has a power limitation, that is, if the total transmission power exceeds the maximum allowed transmission power ( Pcmax ) of the UE (if the total transmission power exceeds Pcmax on the overlapped portion of the symbol) When the SRS and the SRS are simultaneously transmitted, the transmission power of the SRS can be set by performing scaling of the same transmission power value. The above-described embodiment will be described in detail later with reference to Figs. 9 and 10 as a third embodiment.

2) When the same TAG for different element carriers or different TAGs are fully overlapped and there is no power limitation and the PUCCH or PUSCH and SRS are simultaneously transmitted, the operation of the terminal is mathematical Can be set to follow the above-described terminal operation described with reference to equations (1) to (4).

3) different TAGs for different CCs, and if there is a power limitation with no full overlap (partially overlapped) and simultaneous transmission of PUCCH or PUSCH and SRS, The operation can be defined as follows.

In case of PUCCH + SRS, the UE may drop SRS on the corresponding elementary carrier and transmit only the PUCCH.

In case of PUSCH + SRS, the UE can drop SRS on the corresponding elementary carrier and transmit only the PUSCH.

In the case of PUCCH + PUSCH + SRS, the UE may drop the SRS on the corresponding elementary carrier and set the PUCCH and PUSCH to be the same as the transmission power setting method for simultaneous transmission of PUCCH + PUSCH. As described above with reference to the second embodiment, when a UE is configured with multiple TAGs and is partially overlapped with other TAGs as a whole, a Sounding Reference Signal (SRS) and a Physical Uplink Shared Channel (PUSCH) / PUCCH When the total transmission power exceeds the maximum allowed transmission power Pcmax of the UE in the overlapped portion of the symbols transmitting the SRS and the PUCCH / PUCCH on other cells at the time of simultaneously transmitting the Physical Uplink Control Channel transmission power exceeds Pcmax on any overlapped portion of the symbol. SRS can be dropped in a subframe transmitting SRS.

In case of SRS + SRS, scaling is performed with the same scaling value so as to have the same terminal behavior as before, so that the transmission power of the SRS is set. As described above with reference to the third embodiment, if the UE is configured with multiple TAGs and has a power limitation, i.e., if the total transmission power exceeds the maximum allowed transmission power Pcmax of the UE (if the total transmission power exceeds Pcmax on any overlapped portion of the symbol) When the SRS and the SRS are simultaneously transmitted on other cells, the transmission power of the SRS can be set by performing scaling of the same transmission power value.

4) In case of different TAGs for different CCs and in the case where the PUCCH or the PUSCH and the SRS are configured to be simultaneously transmitted without any power limitation and not fully overlapping (or partially overlapped) Can be defined as follows.

In case of PUCCH + SRS, the UE can set the transmission of the SRS together with the PUCCH transmission to transmit the SRS on the intended component carrier.

In case of PUSCH + SRS, the UE can set the transmission of the SRS together with the PUSCH transmission to transmit the SRS on the intended component carrier.

In the case of PUCCH + PUSCH + SRS, the UE is set to transmit the SRS on the intended elementary carrier with the PUCCH and PUSCH transmission and the transmission of the SRS.

In case of SRS + SRS, scaling is performed with the same scaling value so as to have the same terminal behavior as before, so that the transmission power of the SRS is set.

5 is a flowchart of an uplink power control method of a UE according to the first embodiment. 6 is a conceptual diagram of an uplink power control method of a UE according to the first embodiment.

Referring to FIG. 5, an uplink power control method 500 of a UE according to the first embodiment includes a multiple TAG configuration step S510 and an uplink resource mapping step S520.

In step S510, the UE may be configured with multiple TAGs (Timing Advanced Groups). The UE can receive multiple TAGs, for example TAG configuration information, from the Tx / Rx point, thus configuring multiple TAGs. At this time, the TAG configuration information may be transmitted from the transmission / reception point to the UE via downlink control information (e.g., PDCCH) or higher layer signaling (e.g., RRC message).

In step S520, when the UE simultaneously transmits a SRS (Sounding Reference Signal) and a PUSCH (Physical Uplink Shared Channel) on the same cell, a resource for the PUSCH is added to the SC-FDMA symbols except for the last symbol of the subframe in which the SRS is set to be transmitted Map elements.

In other words, if multiple TAGs TAG0 and TAG1 are set, as shown in FIG. 6, if the UE is configured to transmit SRSs in the same subframe of the same cell as the cell transmitting the PUSCH, And may be rate-matched. At this time, as shown in FIG. 6 (a), the UL data channel or the control channel and the SRS may be completely overlapped between different element carriers (CC0, CC1) or element carrier groups under multiple TAGs. In addition, as shown in FIG. 6 (b), the uplink data channel or the control channel and the SRS may be partially overlapped between different element carriers (CC0, CC1) or element carrier groups under multiple TAGs.

At this time, the cell can be a single element transfer file. The SRS may also be either a periodic SRS or an aperiodic SRS.

Specifically, the mapping of the time and frequency resource elements (k, l) corresponding to the physical resource block (s) allocated for the PUSCH transmission in the physical resource mapping of the PUSCH is performed by SRS An SC-FDMA symbol for possible SRS transmission may not be used. In other words, regardless of whether the PUSCH includes the UCI, the PUSCH can be configured to puncture and transmit the last symbol of the corresponding subframe to which the SRS is to be transmitted, so as not to map the resource element for the PUSCH.

FIG. 7 is a flowchart of a method of uplink power control of a UE according to the second embodiment. 8 is a conceptual diagram of a power control method of a terminal according to the second embodiment.

Referring to FIG. 7, the uplink power control method 700 of a UE according to the second embodiment includes a multi-TAG configuration step S710 and an uplink power control step S720.

In step S710, the UE may be configured with multiple TAGs (Timing Advanced Groups). The UE can receive multiple TAGs, for example TAG configuration information, from the Tx / Rx point, thus configuring multiple TAGs. At this time, the TAG configuration information may be transmitted from the transmission / reception point to the UE via downlink control information (e.g., PDCCH) or higher layer signaling (e.g., RRC message).

In step S720, the UE simultaneously transmits the SRS and the PUCCH / PUCCH on different cells when simultaneously transmitting an SRS (Sounding Reference Signal) and a PUSCH (Physical Uplink Shared Channel) / PUCCH (Physical Uplink Control Channel) If the total transmission power in the overlapping part of the transmitted symbols exceeds the maximum allowed transmission power ( P _CMAX ) of the terminal (if the total transmission power exceeds P _CMAX on the overlapped portion of the symbol) Can be dropped. Other cells may be two or more different element carriers. The SRS may also be either a periodic SRS or an aperiodic SRS.

In other words, if the SRS transmission of a UE in a symbol on a subframe for a given serving cell is overlapped by a PUCCH / PUSCH transmission on a subframe for another serving cell that is the same or another TAG, When the power exceeds P _CMAX , the terminal can drop the SRS.

Specifically, as shown in FIG. 8A, when the UE simultaneously transmits SRS and PUSCH / PUCCH on different cells in the same TAG (TAG0) for the different CCs CC0 and CC1, If there are no multiple TAGs, then the SRS can be sent and if there is a power limit, the SRS can be dropped. On the other hand, as shown in FIGS. 8B and 8C, even when different TAGs TAG0 and TAG1 for different CCs CC1 and CC1 are fully overlapped, Can also transmit SRS if multiple TAGs are set if SRS and PUSCH / PUCCH are simultaneously transmitted on different cells, and SRS can be dropped if there is power limitation. On the other hand, as shown in (d) of FIG. 8, if the TAGs (TAG0 and TAG1) for different CCs CC0 and CC1 are partially overlapped, If there is no power limitation when transmitting PUSCH / PUCCH at the same time, SRS can be sent if multiple TAGs are set, and SRS can be dropped if there is power limitation.

On the other hand, when the cell is composed of three or more cells, the SRS transmission of the UE in the symbol on the subframe for a given serving cell, which is one TAG, overlaps the SRS transmission on the subframe for the other serving cell, If the PUCCH / PUSCH transmissions overlap on the frame, the terminal may drop the SRS when the total transmit power in the overlapping portion of the symbol exceeds P _CMAX . In other words, in the case of SRS + SRS + PUSCH / PUCCH transmission on three or more element carriers in two or more TAGs, when the symbols are overlapped or partially overlapped with each other, You can drop all the SRSs before performing another power scaling. At this time, SRS may be transmitted if there is no power limitation.

9 is a flowchart of an uplink power control method of a UE according to the third embodiment. 10 is a conceptual diagram of a UL power control method of a UE according to the third embodiment.

Referring to FIG. 9, the uplink power control method 900 of the UE according to the third exemplary embodiment includes a TAG configuration step S910 and an SRS transmission power setting step S920.

In step S910, the UE may be configured with multiple TAGs (Timing Advanced Groups). The UE can receive multiple TAGs, for example TAG configuration information, from the Tx / Rx point, thus configuring multiple TAGs. At this time, the TAG configuration information may be transmitted from the transmission / reception point to the UE via downlink control information (e.g., PDCCH) or higher layer signaling (e.g., RRC message).

Next, in step S920, the UE can set the transmission power of the SRS by performing the same scaling of the transmission power value when there is a power limitation and simultaneously transmitting SRS (Sounding Reference Signal) and SRS on other cells. In other words, as shown in FIG. 10 (a) (where the TAGs are the same), (b) (where the TAGs are partially overlapping) and (c) , The SRS transmission of the UE in the symbol on the subframe for a given serving cell, which is one TAG, overlaps or partially overlaps (at least) with the SRS transmission on the subframe for the other serving cell using different TAGs (TAG0, TAG1) If there is power limitation in case of overlapping, the UE can set the transmission power of the SRS by performing the same scaling in the SRS + SRS simultaneous transmission so that the P cmax is not exceeded. In this case, if there is no power limitation, the terminal can transmit the SRS. Other cells may be two or more different element carriers. The SRS may also be either a periodic SRS or an aperiodic SRS.

11 is a system flow diagram of an uplink power control method according to another embodiment.

Referring to FIGS. 1 and 11, a first transmission / reception point 110 serving as a serving cell transmits TAG configuration information, which can be composed of multiple TAGs (Timing Advanced Groups) under CoMP or carrier aggregation (CA) (S1110). TAG configuration information may be transmitted from the first transmission / reception point 110 to the terminal 120 via downlink control information (e.g., PDCCH) or higher layer signaling (e.g., an RRC message).

Next, the terminal 120 may receive the TAG configuration information and configure multiple TAGs (S1120). As described above, even if the transmission / reception point is composed of multiple TAGs to the UE, the specific element carriers under the carrier aggregation can have the same TAG. For example, when two uplink element carriers are composed of two, the element carrier waves can be set to have the same TAG. In another example, if the uplink component carriers are composed of three components, the two component carriers can be configured with the same TAG and the other component carrier with different TAGs.

Next, the UE 120 is (1) fully overlapped even if it is the same TAG for different element carriers or different TAGs, and there is a power limitation and the PUCCH or the PUSCH and the SRS are simultaneously transmitted (2) In the case of the same TAG for different element carriers, or in the case of full overlapping even if different TAGs are used, if there is no power limitation and the PUCCH or PUSCH and SRS are configured to be transmitted simultaneously 3) different TAGs for different CCs, and if there is a power limit and if the PUCCH or PUSCH and SRS are configured for simultaneous transmission if there is no full overlap (partially overlapping) and (4) CC, and if there is no full overlap (or partially overlapped), there is no power limit, and PUCCH or PUSCH and SRS are simultaneously transmitted The resource mapping and power control operations of the uplink data channel, the uplink control channel, and the sounding reference signal are performed in operation S1130.

For example, as described with reference to FIG. 5 and FIG. 6, in step S1130, when the UE concurrently transmits SRS (Sounding Reference Signal) and PUSCH (Physical Uplink Shared Channel) on the same cell, And maps the resource element for the PUSCH to the SC-FDMA symbols except for the symbol. In this regard, the first embodiment has been described in detail in the foregoing.

7 and 8, the UE 120 transmits a SRS (Sounding Reference Signal) and a Physical Uplink Shared Channel (PUSCH) / Physical Uplink Control Channel (PUCCH) on other cells in step S1130 When the total transmission power exceeds the maximum allowed transmission power ( P _CMAX ) of the UE in the overlapping part of the symbols for transmitting the SRS and the PUCCH / PUCCH on other cells on simultaneous transmission (if the total transmission power exceeds P _CMAX on the SRS can be dropped in the subframe transmitting the SRS. In this regard, the second embodiment has been described in detail in the foregoing.

As another example, in step S1130, as described with reference to FIGS. 9 and 10, the terminal 120 performs the same scaling when there is a power limitation and simultaneously transmits SRS (Sounding Reference Signal) and SRS on other cells The transmission power of the SRS can be set. In this regard, the third embodiment has been described in detail in the foregoing.

In addition, when two or more different element carriers capable of uplink transmission are configured in the operation of the terminal and multiple TAGs are configured in the terminal, In the case of defining the operation of each terminal according to whether there is a situation where there is no terminal, 1) applying the operation method of the terminal in case of the same TAG for different CCs or in case of full overlap even if different TAGs are applied, And 2) different TAGs for different CCs, and the operation of the terminal in the case of not full overlapping can be applied.

This is achieved by first setting backward compatibility for different element carriers having the same TAG, and for transmitting the uplink control channel or the uplink data channel and the sounding reference signal under the same TAG, And to transmit the uplink data channel and the sounding reference signal in the element carrier in the different TAGs as much as possible by maximizing the power control or dropping Can be considered.

This may be a method for preventing the data transmission rate to the data channel from being degraded during carrier aggregation by preventing excessive power control on the uplink data channel, and for the sounding reference signal, It is possible to prevent frequent drop due to being dropped when satisfied, and to prevent excessive power control of the sounding reference signal when a certain condition is satisfied, thereby securing the reliability of the sounding reference signal during carrier aggregation, The gain by the dependent scheduling or the beamforming by the channel reciprocity in the TDD can be obtained.

Next, the UE 120 multiplexes an uplink data channel, an uplink control channel, and an uplink reference signal, for example, a sounding reference signal, to which the uplink power control method of the UE is applied, To one of transmission and reception points (S1140). At this time, in the uplink CoMP, the UE transmits at least one of uplink data channel, uplink control channel and uplink reference signal, for example, sounding reference signal, to which the uplink power control method of the UE is applied, to the first transmission / And at least another one to the second transmission / reception point.

12 is a diagram illustrating a configuration of a transmission / reception point according to another embodiment of the present invention.

12, a transmission / reception point 1200 according to another embodiment includes a control unit 1210, a transmission unit 1220, and a reception unit 1230.

The control unit 1210 multiplexes the uplink control channel and the sounding reference signal with the transmission and multiplexing method for the uplink control channel transmitted from the mobile station under the carrier aggregation necessary for performing the above-described present invention, And controls the operation of the overall transmission / reception point according to the method.

The transmitting unit 1220 and the receiving unit 1230 are used to transmit and receive signals, messages, and data necessary for carrying out the present invention to and from the terminal. For example, the transmitter 1220 can transmit configuration information configuring multiple TAGs to the terminal. The receiving unit 1230 may receive at least one of an uplink data channel, an uplink control channel, and an uplink reference signal, for example, a sounding reference signal, to which the uplink power control method of the terminal is applied.

13 is a diagram illustrating a configuration of a user terminal according to another embodiment of the present invention.

13, a user terminal 1300 according to another embodiment includes a receiving unit 1310, a control unit 1320, and a transmitting unit 1330.

The receiving unit 1310 receives downlink control information, data, and messages from the transmission / reception point through the corresponding channel. As described in the first embodiment, the reception unit 1310 receives configuration information constituting multiple TAGs from the transmission / reception point.

In order to perform the above-described present invention, the control unit 1320 multiplexes the uplink control channel and the sounding reference signal in a transmission and multiplexing method for a control channel for uplink transmission in a mobile station under carrier aggregation, And controls the overall operation of the terminal according to the method.

As described in the first embodiment, when a plurality of TAGs are configured and the SRS and the PUSCH are simultaneously transmitted on the same cell, the controller 1320 can set not to map the resource element for the PUSCH to the last symbol of the subframe transmitting the PUSCH have. As described in the second embodiment, when a plurality of TAGs are configured and the SRS (Sounding Reference Signal) and the PUSCH (Physical Uplink Shared Channel) / PUCCH (Physical Uplink Control Channel) are simultaneously transmitted on different cells It is possible to set the SRS to drop in the subframe transmitting the SRS if the total transmission power exceeds the maximum allowed transmission power (P _CMAX ) of the UE in the overlapped portion of the symbols transmitting SRS and PUCCH / PUCCH on other cells have. As described in the third embodiment, when multiple TAGs are configured and the SRS and the PUSCH are simultaneously transmitted on the same cell, the controller 1320 does not map the resource element for the PUSCH to the last symbol of the subframe transmitting the PUSCH .

The transmission unit 1330 transmits downlink control information, data, and a message to the transmission / reception point through the corresponding channel.

In the above-described embodiments, the UE under the carrier aggregation is configured with multiple TAGs, and the uplink control channel, the data channel, and the sounding reference signal are transmitted to different elementary carriers, The transmission / reception point can resolve the ambiguity of the terminal according to the configuration of the transmission channel and the signal transmission to the terminal by defining the operation of the terminal according to the non-restriction of the transmission power.

In the above-described embodiments, the transmission power of the UE and the transmission power of the uplink control channel, the data channel, and the sounding reference signal are transmitted to different elementary carriers, The operation of the UE has been defined according to the restriction, but the TAGs are configured to the UE under the CoMP, and the uplink control channel, the data channel, and the sounding reference signal are transmitted to different elementary carriers, And the operation of the UE can be defined in the same manner as described above according to the limitation of the transmission power.

The contents related to the standard specification mentioned in the above-mentioned embodiments are omitted for the sake of brevity and constitute a part of this specification. Therefore, it is to be understood that the content of some of the contents related to the above standard is added to or included in the scope of the present invention.

The following documents specifically attached form part of this specification as part of the already published documents. Therefore, it is to be understood that the content of the above standard content and portions of the standard documents are added to or contained in the scope of the present invention.

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

Claims (12)

delete delete As an uplink power control method of a terminal,
Wherein multiple TAGs (Timing Advanced Groups) are configured;
Specific SRS bandwidth, a transmission comb, a UE-specific SRS bandwidth, hopping-related configuration parameters, a frequency domain position, a frequency- receiving a parameter for generating a periodic SRS including at least one of a periodicity, a periodicity, a subframe configuration, an antenna configuration, a base sequence index, and a cyclic shift index; And
When SRS (Sounding Reference Signal) and PUSCH (Physical Uplink Shared Channel) are simultaneously transmitted on the same cell, resource elements for PUSCH are not mapped in the last symbol of a subframe transmitting PUSCH,
(Periodic Sounding Reference Signal) and a Physical Uplink Shared Channel (PUSCH) / a Physical Uplink Control Channel (PUCCH) on other cells simultaneously in a subframe composed of multiple TAGs (Timing Advanced Groups) If the periodic SRS and the symbols for transmitting the PUCCH / PUCCH are overlapped in the overlapped part of the symbol for transmitting the periodic SRS and the PUSCH / PUCCH, the total transmission power is equal to the maximum allowed transmission power (P _CMAX ) , It is configured to drop the periodic SRS in a subframe transmitting SRS,
When transmitting the SRS (Sounding Reference Signal) in each of the other cells, if the total transmission power in the overlapped portion of the symbols transmitting the SRS in each of the other cells exceeds the maximum allowed transmission power of the terminal, Scaling and setting a transmission power of an SRS transmitted in each of the other cells. The method of claim 3,
Wherein the TAGs on the other cells are the same or the TAGs on the other cells are different from each other. The method of claim 3,
And the other cells are different element carriers. 6. The method of claim 5,
Wherein the number of the other element carrier waves is two or more. delete delete Specific SRS bandwidth, a transmission comb, a UE-specific SRS bandwidth, and a cell-specific SRS bandwidth of the SRS. A parameter for generating a periodic SRS including at least one of hopping related configuration parameters, a frequency domain position, a periodicity, a subframe configuration, an antenna configuration, a base sequence index, and a cyclic shift index A receiving unit for receiving the data; And
The multiple TAGs are configured,
When SRS (Sounding Reference Signal) and PUSCH (Physical Uplink Shared Channel) are simultaneously transmitted on the same cell, resource elements for PUSCH are not mapped in the last symbol of a subframe transmitting PUSCH,
When a Periodic Sounding Reference Signal (SRS) and a Physical Uplink Shared Channel (PUSCH) / a Physical Uplink Control Channel (PUCCH) are simultaneously transmitted on different cells, in a subframe including multiple TAGs (Timing Advanced Groups) If the periodic SRS and the symbol for transmitting the PUCCH / PUCCH are overlapped in the overlapping part of the symbol for transmitting the PUSCH / PUCCH, the total transmission power becomes equal to the maximum allowed transmission power (P _CMAX ) of the UE The SRS is configured to drop the periodic SRS in a subframe transmitting the periodic SRS,
When transmitting the SRS (Sounding Reference Signal) in each of the other cells, if the total transmission power in the overlapped portion of the symbols transmitting the SRS in each of the other cells exceeds the maximum allowed transmission power of the terminal, And a controller for performing scaling to set transmission power of the SRS transmitted in each of the other cells. 10. The method of claim 9,
Wherein the TAGs on the other cells are the same or the TAGs on the other cells are different from each other. 10. The method of claim 9,
Wherein the other cells are other element carriers. 12. The method of claim 11,
Wherein the number of the other element carrier waves is two or more.

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