KR101216064B1 - Method and apparutus for transmitting control information - Google Patents

Abstract

을 결정하는 단계를 포함하고, 단일 안테나 포트 전송 모드로 설정된 경우, 상기 TPC 필드에 의해 지시된 PUCCH 자원 값

는 단일 안테나 포트를 위한 하나의 PUCCH 자원으로 맵핑되고, 다중 안테나 포트 전송 모드로 설정된 경우, 상기 TPC 필드에 의해 지시된 PUCCH 자원 값

는 다중 안테나 포트를 위한 복수의 PUCCH 자원으로 맵핑되는 방법 및 이를 위한 장치에 관한 것이다.The present invention relates to a wireless communication system. Specifically, the present invention provides a method and apparatus for transmitting control information using PUCCH format 3 in a wireless communication system, comprising: detecting at least one PDCCH; Receiving at least one PDSCH signal corresponding to the at least one PDCCH; And a PUCCH resource value corresponding to a value of a TPC field of a PDCCH for a PDSCH signal on a SCell among a plurality of PUCCH resource values set by a higher layer for the PUCCH format 3

And determining, when the single antenna port transmission mode is set, the PUCCH resource value indicated by the TPC field.

Is mapped to one PUCCH resource for a single antenna port and is set to a multi-antenna port transmission mode, the PUCCH resource value indicated by the TPC field

Relates to a method for mapping to a plurality of PUCCH resources for multiple antenna ports and an apparatus therefor.

Description

TECHNICAL AND APPARUTUS FOR TRANSMITTING CONTROL INFORMATION

The present invention relates to a wireless communication system, and more particularly, to a method and apparatus for transmitting control information. The wireless communication system can support Carrier Aggregation (CA).

Wireless communication systems are widely deployed to provide various kinds of communication services such as voice and data. In general, a wireless communication system is a multiple access system capable of supporting communication with multiple users by sharing available system resources (bandwidth, transmission power, etc.). Examples of multiple access systems include code division multiple access (CDMA) systems, frequency division multiple access (FDMA) systems, time division multiple access (TDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, and single carrier frequency (SC-FDMA). division multiple access) system.

An object of the present invention is to provide a method and an apparatus therefor for efficiently transmitting control information in a wireless communication system. Another object of the present invention is to provide a channel format, a signal processing, and an apparatus therefor for efficiently transmitting control information. It is still another object of the present invention to provide a method for efficiently allocating resources for transmitting control information and an apparatus therefor.

The technical problems to be solved by the present invention are not limited to the technical problems and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

을 하기 표에 따라 결정하는 단계를 포함하고, 단일 안테나 포트 전송 모드로 설정된 경우, 상기 TPC 필드에 의해 지시된 PUCCH 자원 값

는 단일 안테나 포트를 위한 하나의 PUCCH 자원으로 맵핑되고, 다중 안테나 포트 전송 모드로 설정된 경우, 상기 TPC 필드에 의해 지시된 PUCCH 자원 값

는 다중 안테나 포트를 위한 복수의 PUCCH 자원으로 맵핑되는 방법이 제공된다:According to an aspect of the present invention, a method for transmitting control information using a physical uplink control channel (PUCCH) format 3 by a communication device in a wireless communication system, the method comprising: detecting at least one physical downlink control channel (PDCCH); Receiving at least one Physical Downlink Shared Channel (PDSCH) signal corresponding to the at least one PDCCH; And a PUCCH resource value corresponding to a value of a TPC (Transmit Power Control) field of a PDCCH for a PDSCH signal on a SCell among a plurality of PUCCH resource values set by a higher layer for the PUCCH format 3

Determining according to the following table, if the single antenna port transmission mode is set, the PUCCH resource value indicated by the TPC field

Is mapped to one PUCCH resource for a single antenna port and is set to a multi-antenna port transmission mode, the PUCCH resource value indicated by the TPC field

A method is provided that maps to a plurality of PUCCH resources for multiple antenna ports:

Where p represents an antenna port number.

을 하기 표에 따라 결정하도록 구성되며, 단일 안테나 포트 전송 모드로 설정된 경우, 상기 TPC 필드에 의해 지시된 PUCCH 자원 값

는 단일 안테나 포트를 위한 하나의 PUCCH 자원으로 맵핑되고, 다중 안테나 포트 전송 모드로 설정된 경우, 상기 TPC 필드에 의해 지시된 PUCCH 자원 값

는 다중 안테나 포트를 위한 복수의 PUCCH 자원으로 맵핑되는 통신 장치가 제공된다:In another aspect of the present invention, a communication apparatus configured to transmit control information using Physical Uplink Control Channel (PUCCH) format 3 in a wireless communication system, comprising: a radio frequency (RF) unit; And a processor, wherein the processor detects one or more Physical Downlink Control Channels (PDCCHs), receives a Physical Downlink Shared Channel (PDSCH) signal corresponding to the one or more PDCCHs, and transmits to a higher layer for the PUCCH format 3. Among the plurality of PUCCH resource values set by the PUCCH resource value corresponding to the value of the TPC (Transmit Power Control) field of the PDCCH for the PDSCH signal on the SCell (Secondary Cell)

It is configured to determine according to the following table, when the single antenna port transmission mode is set, the PUCCH resource value indicated by the TPC field

Is mapped to one PUCCH resource for a single antenna port and is set to a multi-antenna port transmission mode, the PUCCH resource value indicated by the TPC field

A communication apparatus is provided that maps to a plurality of PUCCH resources for multiple antenna ports:

Where p represents an antenna port number.

는 안테나 포트 p0 을 위한 PUCCH 자원

으로 맵핑되고, 상기 다중 안테나 포트 전송 모드로 설정된 경우, 상기 PUCCH 자원 값

는 안테나 포트 p0 을 위한 PUCCH 자원

과 안테나 포트 p1 을 위한 PUCCH 자원

으로 맵핑된다.Preferably, when the single antenna port transmission mode is set, the PUCCH resource value

PUCCH resource for antenna port p 0

Is mapped to the multi-antenna port transmission mode, the PUCCH resource value

PUCCH resource for antenna port p 0

PUCCH resources for the antenna port p 1

Is mapped to.

Preferably, the value of the TPC field of the PDCCH for the PDSCH signal on the primary cell (PCell) is used for control of the transmit power for the PUCCH format 3.

Preferably, when the at least one PDSCH signal includes a plurality of PDSCH signals on an SCell, a plurality of PDCCHs corresponding to the plurality of PDSCHs on the SCell are all set to have the same value of the TPC field.

Preferably, the control information includes a hybrid automatic repeat request acknowledgment (HARQ-ACK) for the physical downlink shared channel (PDSCH) signal.

Advantageously, the aspect further comprises receiving allocation information indicating a plurality of PUCCH resources for antenna port p 0, wherein the allocation information indicating a plurality of PUCCH resources for antenna port p 1 includes: It is additionally received only if possible or if the multi-antenna port transmission mode is set. The upper layer includes a radio resource control (RRC) layer.

으로부터 맵핑된 PUCCH 자원을 이용하여 상기 제어 정보를 전송한다.Advantageously, said communication device comprises said PUCCH resource value.

The control information is transmitted using the PUCCH resource mapped from the.

According to the present invention, control information can be efficiently transmitted in a wireless communication system. In addition, it is possible to provide a channel format and a signal processing method for efficiently transmitting control information. In addition, it is possible to efficiently allocate resources for transmission of control information.

Effects obtained in the present invention are not limited to the above-mentioned effects, and other effects not mentioned above may be clearly understood by those skilled in the art from the following description. will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included as part of the detailed description in order to provide a thorough understanding of the present invention, provide an embodiment of the present invention and together with the description, illustrate the technical idea of the present invention.
1 illustrates a physical channel used in a 3GPP LTE system, which is an example of a wireless communication system, and a general signal transmission method using the same.
2 illustrates the structure of a radio frame.
3A illustrates an uplink signal processing process.
3B illustrates a downlink signal processing process.
4 illustrates an SC-FDMA scheme and an OFDMA scheme.
5 illustrates a signal mapping scheme in the frequency domain to satisfy a single carrier characteristic.
6 illustrates a signal processing procedure in which DFT process output samples are mapped to a single carrier in cluster SC-FDMA.
7 and 8 illustrate a signal processing procedure in which DFT process output samples are mapped to multi-carriers in a cluster SC-FDMA.
9 illustrates a signal processing procedure in segment SC-FDMA.
10 illustrates a structure of an uplink subframe.
11 illustrates a signal processing procedure for transmitting a reference signal (RS) in uplink.
12 illustrates a demodulation reference signal (DMRS) structure for a PUSCH.
13 through 14 illustrate slot level structures of PUCCH formats 1a and 1b.
15 through 16 illustrate the slot level structure of the PUCCH format 2 / 2a / 2b.
17 illustrates ACK / NACK channelization for PUCCH formats 1a and 1b.
18 illustrates channelization for a mixed structure of PUCCH formats 1 / 1a / 1b and formats 2 / 2a / 2b in the same PRB.
19 illustrates PRB allocation for PUCCH transmission.
20 illustrates a concept of managing a downlink component carrier at a base station.
21 illustrates a concept of managing an uplink component carrier in a terminal.
22 illustrates a concept in which one MAC manages multicarriers in a base station.
23 illustrates a concept in which one MAC manages multicarriers in a terminal.
24 illustrates a concept in which one MAC manages multicarriers in a base station.
25 illustrates a concept in which a plurality of MACs manage a multicarrier in a terminal.
26 illustrates a concept in which a plurality of MACs manage a multicarrier in a base station.
27 illustrates a concept in which one or more MACs manage a multicarrier from a reception point of a terminal.
28 illustrates asymmetric carrier merging with a plurality of DL CCs and one UL CC linked.
29A to 29F illustrate the structure and signal processing procedure of PUCCH format 3.
30 to 31 illustrate a structure and a signal processing procedure of PUCCH format 3 with increased RS multiplexing capacity.
32 illustrates a signal processing block / procedure for SORTD.
33 outlines the SORTD operation.
34 illustrates a base station and a terminal that can be applied to the present invention.

The following techniques include code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), single carrier frequency division multiple access (SC-FDMA), and the like. It can be used in various radio access systems. CDMA may be implemented in radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. The TDMA may be implemented in a wireless technology such as Global System for Mobile communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA may be implemented in a wireless technology such as IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802-20, Evolved UTRA (E-UTRA). UTRA is part of the Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) long term evolution (LTE) is part of Evolved UMTS (E-UMTS) using E-UTRA and LTE-A (Advanced) is an evolved version of 3GPP LTE. For clarity of description, 3GPP LTE / LTE-A is mainly described, but the technical idea of the present invention is not limited thereto.

In a wireless communication system, a terminal receives information through a downlink (DL) from a base station, and the terminal transmits information through an uplink (UL) to the base station. The information transmitted and received by the base station and the terminal includes data and various control information, and various physical channels exist depending on the type / use of the information transmitted / received.

FIG. 1 is a diagram for explaining physical channels used in a 3GPP LTE system and a general signal transmission method using the same.

The terminal that is powered on again or the cell that has entered a new cell performs an initial cell search operation such as synchronizing with the base station in step S101. To this end, a mobile station receives a primary synchronization channel (P-SCH) and a secondary synchronization channel (S-SCH) from a base station, synchronizes with the base station, and acquires information such as a cell ID. Then, the terminal can receive the physical broadcast channel from the base station and acquire the in-cell broadcast information. Meanwhile, the UE can receive the downlink reference signal (DL RS) in the initial cell search step to check the downlink channel state.

Upon completion of the initial cell search, the UE receives a Physical Downlink Control Channel (PDCCH) and a physical downlink control channel (PDSCH) according to physical downlink control channel information in step S102, System information can be obtained.

Thereafter, the terminal can perform a random access procedure such as steps S103 to S106 in order to complete the connection to the base station. To this end, the UE transmits a preamble through a Physical Random Access Channel (PRACH) (S103), and transmits a response message for a preamble through the physical downlink control channel and the corresponding physical downlink shared channel (S104). In the case of a contention-based random access, a contention resolution procedure such as transmission of an additional physical random access channel (S105) and physical downlink control channel and corresponding physical downlink shared channel reception (S106) can be performed .

The UE having performed the above procedure can then receive physical downlink control channel / physical downlink shared channel reception (S107) and physical uplink shared channel (PUSCH) / physical downlink shared channel A Physical Uplink Control Channel (PUCCH) transmission (S108) may be performed. The control information transmitted from the UE to the Node B is collectively referred to as Uplink Control Information (UCI). UCI includes Hybrid Automatic Repeat and reQuest Acknowledgment / Negative-ACK (HARQ ACK / NACK), Scheduling Request (SR), Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), Rank Indication (RI), and the like. In this specification, HARQ ACK / NACK is simply referred to as HARQ-ACK or ACK / NACK (A / N). The HARQ-ACK includes at least one of positive ACK (simply ACK), negative ACK (NACK), DTX and NACK / DTX. The UCI is generally transmitted through the PUCCH, but may be transmitted via the PUSCH when the control information and the traffic data are to be simultaneously transmitted. In addition, UCI can be transmitted non-periodically through the PUSCH according to the request / instruction of the network.

2 illustrates the structure of a radio frame. In a cellular OFDM wireless packet communication system, uplink / downlink data packet transmission is performed in subframe units, and one subframe is defined as a predetermined time interval including a plurality of OFDM symbols. The 3GPP LTE standard supports a type 1 radio frame structure applicable to frequency division duplex (FDD) and a type 2 radio frame structure applicable to time division duplex (TDD).

2 (a) illustrates the structure of a Type 1 radio frame. A downlink radio frame is composed of 10 subframes, and one subframe is composed of two slots in a time domain. The time taken for one subframe to be transmitted is called a transmission time interval (TTI). For example, one subframe may have a length of 1 ms, and one slot may have a length of 0.5 ms. One slot includes a plurality of OFDM symbols in the time domain and a plurality of resource blocks (RBs) in the frequency domain. In the 3GPP LTE system, since OFDMA is used in the downlink, an OFDM symbol represents one symbol period. The OFDM symbol may also be referred to as an SC-FDMA symbol or a symbol interval. A resource block (RB) as a resource allocation unit may include a plurality of consecutive subcarriers in one slot.

The number of OFDM symbols included in one slot may vary depending on the configuration of a cyclic prefix (CP). CPs include extended CPs and normal CPs. For example, when an OFDM symbol is configured by a standard CP, the number of OFDM symbols included in one slot may be seven. When the OFDM symbol is configured by the extended CP, since the length of one OFDM symbol is increased, the number of OFDM symbols included in one slot is smaller than that of the standard CP. In the case of the extended CP, for example, the number of OFDM symbols included in one slot may be six. If the channel condition is unstable, such as when the UE moves at a high speed, an extended CP may be used to further reduce inter-symbol interference.

When a standard CP is used, since one slot includes 7 OFDM symbols, one subframe includes 14 OFDM symbols. In this case, the first up to three OFDM symbols of each subframe may be allocated to a physical downlink control channel (PDCCH), and the remaining OFDM symbols may be allocated to a physical downlink shared channel (PDSCH).

2 (b) illustrates the structure of a Type 2 radio frame. Type 2 radio frames consist of two half frames, each of which has five subframes, a downlink pilot time slot (DwPTS), a guard period (GP), and an uplink pilot time slot (UpPTS). One subframe consists of two slots. DwPTS is used for initial cell search, synchronization or channel estimation at the terminal. UpPTS is used for channel estimation in a base station and synchronization of uplink transmission of a terminal. The guard period is a period for removing interference generated in the uplink due to the multipath delay of the downlink signal between the uplink and the downlink.

The structure of the radio frame is only an example, and the number of subframes included in the radio frame or the number of slots included in the subframe and the number of symbols included in the slot may be variously changed.

FIG. 3A is a diagram for describing signal processing and ��� for the UE to transmit an uplink signal.

In order to transmit the uplink signal, the scrambling module 210 of the UE may scramble the transmission signal using the UE-specific scrambling signal. The scrambled signal is input to the modulation mapper 220 and uses a Binary Phase Shift Keying (BPSK), Quadrature Phase Shift Keying (QPSK), or 16QAM / 64QAM (Quadrature Amplitude Modulation) scheme according to the type and / or channel state of the transmitted signal. Is modulated into a complex symbol. After the modulated complex symbols are processed by the transform precoder 230, they are input to the resource element mapper 240 and the resource element mapper 240 can map the complex symbols to the time-frequency resource elements. The signal thus processed can be transmitted to the base station via the antenna via the SC-FDMA signal generator 250. [

3B is a diagram for describing a signal processing procedure for transmitting a downlink signal by a base station.

In a 3GPP LTE system, a base station may transmit one or more codewords in the downlink. The codewords may be processed as complex symbols through the scramble module 301 and the modulation mapper 302, respectively, as in the uplink of FIG. 3A, after which the complex symbols may be processed by the layer mapper 303 into a plurality of layers ( Layer, and each layer may be multiplied by the precoding matrix by the precoding module 304 and assigned to each transmit antenna. The transmission signals for each antenna thus processed are mapped to time-frequency resource elements by the resource element mapper 305, and then transmitted through each antenna via an OFDM (Orthogonal Frequency Division Multiple Access) signal generator 306 .

In a wireless communication system, when a mobile station transmits a signal in an uplink, a peak-to-average ratio (PAPR) is more problematic than a case where a base station transmits a downlink signal. Accordingly, as described above with reference to FIGS. 3A and 3B, the uplink signal transmission uses a single carrier-frequency division multiple access (SC-FDMA) scheme unlike the OFDMA scheme used for the downlink signal transmission.

4 is a diagram for explaining an SC-FDMA scheme and an OFDMA scheme. The 3GPP system employs OFDMA in downlink and SC-FDMA in uplink.

Referring to FIG. 4, both a terminal for uplink signal transmission and a base station for downlink signal transmission include a serial-to-parallel converter 401, a subcarrier mapper 403, and an M-point IDFT module. 404 and the Cyclic Prefix (CP) addition module 406 are the same. However, the terminal for transmitting a signal in the SC-FDMA scheme further includes an N-point DFT module 402. [ The N-point DFT module 402 allows the transmitted signal to have a single carrier property by canceling a portion of the IDFT processing impact of the M-point IDFT module 404.

5 is a diagram for explaining a signal mapping method in the frequency domain for satisfying a single carrier characteristic in the frequency domain. FIG. 5A illustrates a localized mapping scheme, and FIG. 5B illustrates a distributed mapping scheme.

Clustered SC-FDMA, a modified form of SC-FDMA, is described. Clustered SC-FDMA divides DFT process output samples into sub-groups during subcarrier mapping and discontinuously maps them to the frequency domain (or subcarrier domain).

6 is a diagram illustrating a signal processing procedure in which DFT process output samples are mapped to a single carrier in a cluster SC-FDMA. 7 and 8 illustrate a signal processing procedure in which DFT process output samples are mapped to multi-carriers in a cluster SC-FDMA. 6 shows an example of applying an intra-carrier cluster SC-FDMA, and FIGS. 7 and 8 correspond to an example of applying an inter-carrier cluster SC-FDMA. FIG. 7 illustrates a case where a signal is generated through a single IFFT block when subcarrier spacing between adjacent component carriers is aligned in a situation in which component carriers are continuously allocated in the frequency domain. FIG. 8 illustrates a case where a signal is generated through a plurality of IFFT blocks in a situation in which component carriers are allocated non-contiguous in the frequency domain.

9 is a diagram illustrating a signal processing procedure of a segmented SC-FDMA.

Segment SC-FDMA is an extension of DFT spreading of existing SC-FDMA and frequency subcarrier mapping of IFFT as the number of IFFTs is the same as that of any number of DFTs, as the relationship structure between DFT and IFFT has a one- -FDMA or NxDFT-s-OFDMA. The present specification encompasses them as a segment SC-FDMA. Referring to FIG. 9, the segment SC-FDMA performs a DFT process on a group basis by grouping all time-domain modulation symbols into N (N is an integer greater than 1) groups to alleviate a single carrier characteristic condition.

10 illustrates a structure of an uplink subframe.

Referring to FIG. 10, an uplink subframe includes a plurality of slots (eg, two). The slot may include different numbers of SC-FDMA symbols according to a cyclic prefix (CP) length. For example, in case of a normal CP, a slot may include 7 SC-FDMA symbols. The uplink subframe is divided into a data area and a control area. The data area includes a PUSCH and is used to transmit data signals such as voice. The control region includes a PUCCH and is used to transmit control information. The PUCCH includes RB pairs (eg, m = 0,1,2,3) located at both ends of the data region on the frequency axis (eg, RB pairs at frequency mirrored locations). Hop the slot to the boundary. The uplink control information (ie, UCI) includes HARQ ACK / NACK, Channel Quality Indicator (CQI), Precoding Matrix Indicator (PMI), and Rank Indication (RI).

FIG. 11 illustrates a signal processing procedure for transmitting a reference signal in uplink. Data is converted into a frequency domain signal through a DFT precoder, and then transmitted through the IFFT after frequency mapping, while RS skips the process through the DFT precoder. Specifically, after the RS sequence is directly generated in the frequency domain (S11), the RS is sequentially transmitted through a localization mapping process (S12), an IFFT (S13) process, and a cyclic prefix (CP) attachment process (S14). do.

는 기본 시퀀스(base sequence)의 순환 쉬프트(cyclic shift)

에 의해 정의되며 수학식 1과 같이 표현될 수 있다.RS sequence

Is a cyclic shift of the base sequence

It is defined by and can be expressed as Equation 1.

는 RS 시퀀스의 길이이고,

는 부반송파 단위로 나타낸 자원 블록의 크기이며, m은

이다.

는 최대 상향링크 전송 대역을 나타낸다.From here,

Is the length of the RS sequence,

Is the size of the resource block in subcarriers and m is

to be.

Denotes a maximum uplink transmission band.

는 몇 개의 그룹으로 구분된다.

는 그룹 번호를 나타내며,

는 해당 그룹 내의 기본 시퀀스 번호에 해당한다. 각 그룹은 길이가

인 하나의 기본 시퀀스 (

)와 길이가

인 두 개의 기본 시퀀스(

)를 포함한다. 해당 그룹 내에서 시퀀스 그룹 번호

와 해당 번호

는 시간에 따라 각각 변할 수 있다. 기본 시퀀스

의 정의는 시퀀스 길이

에 따른다.The default sequence

Are divided into several groups.

Represents the group number,

Corresponds to the base sequence number in the group. Each group has a length

One base sequence that is (

) And the length

Two basic sequences that are

). Sequence group number within that group

And its number

Can vary with time. Basic sequence

The definition of the sequence length

Follow.

이상의 길이를 가진 기본 시퀀스는 다음과 같이 정의할 수 있다.

Basic sequences with lengths above can be defined as follows:

에 대하여, 기본 시퀀스

는 다음의 수학식 2에 의해 주어진다.

With respect to the base sequence

Is given by the following equation.

Here, the q th root Zadoff-Chu sequence may be defined by Equation 3 below.

Here, q satisfies the following equation (4).

는 가장 큰 소수에 의해 주어지고 따라서,

를 만족한다.Where, the length of the Zadoff-Chu sequence

Is given by the largest prime number

.

미만의 길이를 가진 기본 시퀀스는 다음과 같이 정의될 수 있다. 먼저,

와

에 대해 기본 시퀀스는 수학식 5와 같이 주어진다.

A base sequence with length less than may be defined as follows. first,

Wow

The basic sequence for is given by Equation 5.

와

에 대한

의 값은 다음의 표 1과 표 2로 각각 주어진다.From here,

Wow

For

The values of are given in Tables 1 and 2, respectively.

Meanwhile, the RS hopping will be described.

과 시퀀스 시프트(sequence shift) 패턴

에 의해 슬롯

에서 시퀀스 그룹 번호

는 다음의 수학식 6과 같이 정의할 수 있다.Group hopping pattern

And sequence shift patterns

By slot

Sequence group number

May be defined as in Equation 6 below.

Here, mod represents a modulo operation.

There are 17 different hopping patterns and 30 different sequence shift patterns. Sequence group hopping may be enabled or disabled by a parameter that activates group hopping provided by a higher layer.

PUCCH and PUSCH have the same hopping pattern but may have different sequence shift patterns.

는 PUSCH와 PUCCH에 대해 동일하며 다음의 수학식 7과 같이 주어진다.Group hopping pattern

Is the same for PUSCH and PUCCH and is given by Equation 7 below.

는 슈도-랜덤(pseudo-random) 시퀀스에 해당하며, 슈도-랜덤 시퀀스 생성기는 각 무선 프레임의 시작에서

로 초기화 될 수 있다.From here

Corresponds to a pseudo-random sequence, and the pseudo-random sequence generator is used at the beginning of each radio frame.

Can be initialized to

의 정의는 PUCCH와 PUSCH간에 서로 상이하다.Sequence shift pattern

Are different from each other between PUCCH and PUSCH.

는

로 주어지고, PUSCH에 대해서, 시퀀스 시프트 패턴

는

로 주어진다.

는 상위 계층에 의해 구성된다.For PUCCH, sequence shift pattern

The

For PUSCH, a sequence shift pattern

The

.

Is constituted by an upper layer.

Hereinafter, sequence hopping will be described.

인 기준 신호에 대해서만 적용된다.Sequence hopping has a length

Applies only for reference signals.

인 기준 신호에 대해서, 기본 시퀀스 그룹 내에서 기본 시퀀스 번호

가

로 주어진다.Length

Base sequence number within the base sequence group,

end

.

인 기준 신호에 대해서, 슬롯

에서 기본 시퀀스 그룹 내에서 기본 시퀀스 번호

는 다음의 수학식 8과 같이 주어진다.Length

For a reference signal that is

Default sequence number within the default sequence group

Is given by Equation 8 below.

는 슈도-랜덤 시퀀스에 해당하고, 상위 계층에 의해 제공되는 시퀀스 호핑을 가능하게(enabled) 하는 파라미터는 시퀀스 호핑이 가능한지 여부를 결정한다. 슈도-랜덤 시퀀스 생성기는 무선 프레임의 시작에서

로 초기화 될 수 있다.From here,

Corresponds to a pseudo-random sequence, and a parameter that enables sequence hopping provided by a higher layer determines whether sequence hopping is enabled. Pseudo-Random Sequence Generator is used at the beginning of a radio frame

Can be initialized to

The reference signal for the PUSCH is determined as follows.

는

로 정의된다. m과 n은

을 만족하고,

을 만족한다.Reference Signal Sequence for PUSCH

The

. m and n are

Lt; / RTI >

To satisfy.

와 함께

로 주어진다.Cyclic shift in one slot

with

.

는 방송되는 값이고,

는 상향링크 스케줄링 할당에 의해 주어지며,

는 셀 특정 순환 시프트 값이다.

는 슬롯 번호

에 따라 변하며,

와 같이 주어진다.

Is the value being broadcast,

Is given by the uplink scheduling assignment,

Is a cell specific cyclic shift value.

Is the slot number

Changes depending on

As shown in Fig.

는 슈도-랜덤 시퀀스이며,

는 셀-특정 값이다. 슈도-랜덤 시퀀스 생성기는 무선 프레임의 시작에서

로 초기화 될 수 있다.

Is a pseudo-random sequence,

Is a cell-specific value. Pseudo-Random Sequence Generator is used at the beginning of a radio frame

Can be initialized to

를 나타내는 표이다.Table 3 lists the cyclic shift fields in Downlink Control Information (DCI) format 0.

Table showing

The physical mapping method for the uplink RS in the PUSCH is as follows.

와 곱해지고,

로 시작하는 시퀀스 내에서 대응하는 PUSCH를 위해 사용되는 물리 자원 블록(Physical Resource Block, PRB)의 동일한 세트로 맵핑될 것이다. 표준 순환 전치에 대해서는

으로, 확장 순환 전치에 대해서는

으로 서브프레임 내에서 자원 요소

에 맵핑하는 것은 먼저

의 차수가 증가하고 그리고 나서 슬롯 번호의 순이 될 것이다.A sequence is an amplitude scaling factor

≪ / RTI >

It will be mapped to the same set of Physical Resource Blocks (PRBs) used for the corresponding PUSCH in the sequence beginning with. For the standard circular transpose

For extended circular transposition

Resource elements within subframes

Mapping to

The order of increases and then the slot number.

이상이면, 순환 확장과 함께 ZC 시퀀스가 사용되고, 길이가

미만이면, 컴퓨터 생성 시퀀스가 사용된다. 순환 시프트는, 셀-특정 순환 시프트, 단말-특정 순환 시프트 및 호핑 패턴 등에 따라 결정된다.In short, the length

Above, the ZC sequence is used with circular expansion,

If less, a computer generated sequence is used. The cyclic shift is determined according to cell-specific cyclic shift, terminal-specific cyclic shift, hopping pattern, and the like.

FIG. 12A illustrates a structure of a demodulation reference signal (DMRS) for a PUSCH in the case of a normal CP, and FIG. 12B illustrates a structure of a DMRS for a PUSCH in the case of an extended CP. Drawing. In FIG. 12A, the DMRS is transmitted through the fourth and eleventh SC-FDMA symbols, and in FIG. 12B, the DMRS is transmitted through the third and ninth SC-FDMA symbols.

13-16 illustrate the slot level structure of the PUCCH format. PUCCH includes the following format for transmitting control information.

(1) Format 1: On-Off Keying (OOK) Modulation, Used for Scheduling Request (SR)

(2) Format 1a and Format 1b: used for ACK / NACK (Acknowledgment / Negative Acknowledgment) transmission

1) Format 1a: BPSK ACK / NACK for one codeword

2) Format 1b: QPSK ACK / NACK [for 2 codewords]

(3) Format 2: QPSK modulation, used for CQI transmission

(4) Format 2a and Format 2b: used for simultaneous transmission of CQI and ACK / NACK

Table 4 shows a modulation scheme and the number of bits per subframe according to the PUCCH format. Table 5 shows the number of RSs per slot according to the PUCCH format. Table 6 is a table showing the SC-FDMA symbol position of the RS according to the PUCCH format. In Table 4, PUCCH formats 2a and 2b correspond to a standard cyclic prefix.

13 shows PUCCH formats 1a and 1b in the case of standard cyclic prefix. 14 shows PUCCH formats 1a and 1b in case of extended cyclic prefix. In PUCCH formats 1a and 1b, control information having the same content is repeated in a slot unit in a subframe. In each terminal, the ACK / NACK signal includes a cyclic shift (CS) (frequency domain code) and an orthogonal cover code (orthogonal cover code) of a computer-generated constant amplitude zero auto correlation (CG-CAZAC) sequence. It is transmitted through different resources consisting of OC or OCC (Time Domain Spreading Code). The OC includes, for example, a Walsh / DFT orthogonal code. If the number of CSs is 6 and the number of OCs is 3, a total of 18 terminals based on a single antenna can be multiplexed in the same physical resource block (PRB). Orthogonal sequences w0, w1, w2, w3 can be applied in any time domain (after FFT modulation) or in any frequency domain (before FFT modulation).

For SR and persistent scheduling, ACK / NACK resources composed of CS, OC, and PRB (Physical Resource Block) may be given to the UE through RRC (Radio Resource Control). For dynamic ACK / NACK and non-persistent scheduling, the ACK / NACK resource is implicitly given to the UE by the lowest CCE (Control Channel Element) index of the PDCCH corresponding to the PDSCH. Can be.

15 shows PUCCH format 2 / 2a / 2b in the case of standard cyclic prefix. 16 shows PUCCH format 2 / 2a / 2b in case of extended cyclic prefix. 15 and 16, in the case of a standard CP, one subframe includes 10 QPSK data symbols in addition to the RS symbol. Each QPSK symbol is spread in the frequency domain by CS and then mapped to the corresponding SC-FDMA symbol. SC-FDMA symbol level CS hopping may be applied to randomize inter-cell interference. The RS may be multiplexed by the CDM using a cyclic shift. For example, assuming that the number of available CSs is 12 or 6, 12 or 6 terminals may be multiplexed in the same PRB, respectively. That is, within the PUCCH formats 1 / 1a / 1b and 2 / 2a / 2b, a plurality of terminals can be multiplexed by CS + OC + PRB and CS + PRB, respectively.

Orthogonal sequences (OC) of length-4 and length-3 for PUCCH format 1 / 1a / 1b are shown in Tables 7 and 8 below.

Orthogonal sequence (OC) for RS in PUCCH format 1a / 1b is shown in Table 9 below.

인 경우에 해당한다.FIG. 17 illustrates ACK / NACK channelization for PUCCH formats 1a and 1b. 17 is

Corresponds to

18 illustrates channelization for a mixed structure of PUCCH formats 1a / 1b and 2 / 2a / 2b in the same PRB.

Cyclic Shift (CS) hopping and Orthogonal Cover (OC) remapping may be applied as follows.

(1) Symbol-Based Cell-Specific CS Hopping for Randomization of Inter-cell Interference

(2) slot-level CS / OC remapping

1) for inter-cell interference randomization

2) Slot based access for mapping between ACK / NACK channel and resource (k)

Meanwhile, the resource n _r for PUCCH formats 1a / 1b includes the following combination.

(1) CS (= same as DFT orthogonal code at symbol level) (n _cs )

(2) OC (orthogonal cover at slot level) (n _oc )

(3) Frequency RB (Resource Block) (n _rb )

When the indices representing CS, OC, and RB are n _cs , n _oc , and n _rb , respectively, the representative index n _r includes n _cs , n _oc , n _rb . n _{r satisfies} n _r = (n _cs , n _oc , n _rb ).

CQI, PMI, RI, and a combination of CQI and ACK / NACK may be delivered through PUCCH format 2 / 2a / 2b. Reed Muller (RM) channel coding may be applied.

은 (20,A) RM 코드를 이용하여 채널 코딩된다. 표 10은 (20,A) 코드를 위한 기본 시퀀스를 나타낸 표이다.

와

는 MSB(Most Significant Bit)와 LSB(Least Significant Bit)를 나타낸다. 확장 CP의 경우, CQI와 ACK/NACK이 동시 전송되는 경우를 제외하면 최대 정보 비트는 11비트이다. RM 코드를 사용하여 20비트로 코딩한 후에 QPSK 변조가 적용될 수 있다. QPSK 변조 전, 코딩된 비트는 스크램블 될 수 있다.For example, channel coding for UL CQI in an LTE system is described as follows. Bit stream

Is channel coded using the (20, A) RM code. Table 10 shows a basic sequence for the (20, A) code.

Wow

Indicates a Most Significant Bit (MSB) and a Least Significant Bit (LSB). In the case of the extended CP, the maximum information bit is 11 bits except when the CQI and the ACK / NACK are simultaneously transmitted. After coding with 20 bits using the RM code, QPSK modulation can be applied. Prior to QPSK modulation, the coded bits may be scrambled.

는 수학식 9에 의해 생성될 수 있다.Channel coding bits

May be generated by Equation 9.

Where i = 0, 1, 2,... Satisfies B-1.

Table 11 shows an Uplink Control Information (UCI) field for wideband reporting (single antenna port, transmit diversity or open loop spatial multiplexing PDSCH) CQI feedback.

Table 12 shows the UCI fields for CQI and PMI feedback for broadband, which reports closed loop spatial multiplexing PDSCH transmissions.

Table 13 shows a UCI field for RI feedback for wideband reporting.

19 illustrates PRB allocation. As shown in FIG. 19, the PRB may be used for PUCCH transmission in slot n _s .

A multicarrier system or a carrier aggregation system refers to a system that aggregates and uses a plurality of carriers having a band smaller than a target bandwidth for wideband support. When a plurality of carriers having a band smaller than the target band is aggregated, the band of the aggregated carriers may be limited to the bandwidth used by the existing system for backward compatibility with the existing system. For example, existing LTE systems support bandwidths of 1.4, 3, 5, 10, 15, and 20 MHz, and improved LTE-A (LTE-Advanced) systems from LTE systems use only the bandwidths supported by LTE It can support bandwidths greater than 20MHz. Alternatively, a new bandwidth can be defined to support carrier aggregation regardless of the bandwidth used by the existing system. Multicarrier is a name that can be used interchangeably with carrier aggregation and bandwidth aggregation. In addition, carrier aggregation collectively refers to both contiguous and non-contiguous carrier merging.

20 is a diagram illustrating a concept of managing downlink component carriers in a base station, and FIG. 21 is a diagram illustrating a concept of managing uplink component carriers in a terminal. For convenience of explanation, hereinafter, the upper layers will be briefly described as MACs in FIGS. 20 and 21.

22 illustrates a concept in which one MAC manages multicarriers in a base station. 23 illustrates a concept in which one MAC manages multicarriers in a terminal.

22 and 23, one MAC manages and operates one or more frequency carriers to perform transmission and reception. The frequency carriers managed in one MAC have the advantage of being more flexible in terms of resource management since they do not need to be contiguous with each other. In FIG. 22 and FIG. 23, one PHY means one component carrier for convenience. Here, one PHY does not necessarily mean an independent RF (Radio Frequency) device. In general, an independent RF device refers to a single PHY, but is not necessarily limited thereto, and one RF device may include multiple PHYs.

24 illustrates a concept in which a plurality of MACs manages multicarriers in a base station. 25 illustrates a concept in which a plurality of MACs manage a multicarrier in a terminal. 26 illustrates another concept in which a plurality of MACs manages multicarriers in a base station. 27 illustrates another concept in which a plurality of MACs manage a multicarrier in a terminal.

In addition to the structures illustrated in FIGS. 22 and 23, as shown in FIGS. 24 to 27, multiple carriers may control several carriers instead of one MAC.

As shown in FIGS. 24 and 25, each carrier may be controlled by one MAC, and as shown in FIGS. 26 and 27, each carrier is controlled by one MAC and one by one for some carriers. One or more carriers can be controlled by one MAC.

The system is a system that includes a number of carriers from one to N, and each carrier may be used contiguous or non-contiguous. This can be applied to uplink / downlink without any distinction. The TDD system is configured to operate N number of carriers including transmission of the downlink and uplink in each carrier, and the FDD system is configured to use a plurality of carriers on the uplink and the downlink, respectively. In case of the FDD system, asymmetric carrier merging in which the number of carriers merged in the uplink and the downlink and / or the bandwidth of the carrier is different may be supported.

When the number of component carriers aggregated in the uplink and the downlink is the same, it is possible to configure all the component carriers to be compatible with the existing system. However, component carriers that do not consider compatibility are not excluded from the present invention.

Hereinafter, for convenience of description, when the PDCCH is transmitted on the downlink component carrier # 0, the PDSCH is described on the assumption that it is transmitted on the downlink component carrier # 0, but cross-carrier scheduling is applied. It is apparent that the corresponding PDSCH can be transmitted on another downlink component carrier. The term “component carrier” may be replaced with another equivalent term (eg cell).

FIG. 28 exemplifies a scenario in which uplink control information (UCI) is transmitted in a wireless communication system supporting carrier aggregation. For convenience, this example assumes the case where UCI is ACK / NACK (A / N). However, this is for convenience of description, and the UCI may include control information such as channel state information (CSI) (eg, CQI, PMI, RI) and scheduling request information (eg, SR) without limitation. have.

28 illustrates asymmetric carrier merging with five DL CCs linked with one UL CC. The illustrated asymmetric carrier merging may be set in terms of UCI transmission. That is, the DL CC-UL CC linkage for UCI and the DL CC-UL CC linkage for data may be set differently. For convenience, assuming that one DL CC can transmit at most two codewords, the UL ACK / NACK bit also needs at least 2 bits. In this case, at least 10 bits of ACK / NACK bits are required to transmit ACK / NACK for data received through five DL CCs through one UL CC. To support the DTX state per DL CC, at least 12 bits (= 5 ⁵ = 3125 = 11.61 bits) are required for ACK / NACK transmission. Since the existing PUCCH format 1a / 1b can send ACK / NACK to 2 bits, this structure can not transmit the increased ACK / NACK information. Although carrier aggregation is illustrated as an increase in the amount of UCI information, this situation may occur due to an increase in the number of antennas, the presence of a backhaul subframe in a TDD system, a relay system, and the like. Similar to ACK / NACK, the amount of control information to be transmitted is increased even when control information associated with a plurality of DL CCs is transmitted through one UL CC. For example, if the CQI / PMI / RI for multiple DL CCs need to be transmitted, the UCI payload may increase.

The DL primary CC may be defined as a DL CC linked with an UL primary CC. Linkage here encompasses both implicit and explicit linkage. In LTE, one DL CC and one UL CC are uniquely paired. For example, by the LTE pairing, a DL CC linked with a UL primary CC may be referred to as a DL primary CC. You can think of this as an implicit linkage. Explicit linkage means that the network configures the linkage in advance and can be grouped with RRC. In the explicit linkage, a DL CC paired with a UL primary CC may be referred to as a primary DL CC. Here, the UL primary (or anchor) CC may be a UL CC on which the PUCCH is transmitted. Alternatively, the UL primary CC may be a UL CC through which UCI is transmitted through PUCCH or PUSCH. Alternatively, the DL primary CC may be configured through higher layer signaling. Alternatively, the DL primary CC may be a DL CC to which the UE performs initial access. In addition, the DL CC except for the DL primary CC may be referred to as a DL secondary CC. Similarly, the UL CC except for the UL primary CC may be referred to as a UL secondary CC.

LTE-A uses the concept of a cell to manage radio resources. A cell is defined as a combination of a downlink resource and an uplink resource, and an uplink resource is not essential. Accordingly, the cell may be configured with only downlink resources or with downlink resources and uplink resources. If carrier aggregation is supported, the linkage between the carrier frequency (or DL CC) of the downlink resource and the carrier frequency (or UL CC) of the uplink resource may be indicated by system information. A cell operating on the primary frequency (or PCC) may be referred to as a primary cell (PCell), and a cell operating on the secondary frequency (or SCC) may be referred to as a secondary cell (SCell). In brief, the DL CC and the UL CC may be referred to as a DL cell and a UL cell, respectively. In addition, the anchor (or primary) DL CC and the anchor (or primary) UL CC may be referred to as DL Primary Cell (UL) and UL PCell, respectively. The PCell is used by the terminal to perform an initial connection establishment process or to perform a connection re-establishment process. The PCell may refer to the cell indicated in the handover process. The SCell is configurable after the RRC connection is established and can be used to provide additional radio resources. PCell and SCell may be collectively referred to as a serving cell. Therefore, in the case of the UE that is in the RRC_CONNECTED state, but carrier aggregation is not configured or does not support carrier aggregation, there is only one serving cell configured only with the PCell. On the other hand, in the case of the UE in the RRC_CONNECTED state and the carrier aggregation is configured, one or more serving cells exist, and the entire serving cell includes the PCell and the entire SCell. For carrier aggregation, after the initial security activation process is initiated, the network may configure one or more SCells for the UE supporting carrier aggregation in addition to the PCell initially configured in the connection establishment process.

DL-UL pairing may correspond to FDD only. Since TDD uses the same frequency, separate DL-UL pairing may not be defined. In addition, the DL-UL linkage may be determined from the UL linkage through UL EEARU Radio Absolute Radio Frequency Channel Number (EARFCN) information of SIB2. For example, the DL-UL linkage may be obtained through SIB2 decoding at initial connection and otherwise obtained through RRC signaling. Thus, only SIB2 linkage exists and other DL-UL pairing may not be explicitly defined. For example, in the 5DL: 1UL structure of FIG. 28, DL CC # 0 and UL CC # 0 have a SIB2 linkage relationship with each other, and the remaining DL CCs may have a SIB2 linkage relationship with other UL CCs not configured for the UE. Can be.

A new method is needed to support the scenario as shown in FIG. Hereinafter, a PUCCH format for feeding back UCI (eg, multiple A / N bits) in a communication system supporting carrier aggregation is referred to as a CA PUCCH format (or PUCCH format 3). For example, PUCCH format 3 can be used to transmit A / N information (including DTX state) corresponding to PDSCH (or PDCCH) transmitted from multiple DL serving cells.

29A to 29F illustrate the structure and signal processing procedure of PUCCH format 3.

FIG. 29A illustrates a case in which PUCCH format 3 is applied to a structure of PUCCH format 1 (standard CP). Referring to FIG. 29A, a channel coding block includes information bits a_0, a_1,... (or codewords) b_0, b_1, ..., a_M-1 (e.g., multiple ACK / NACK bits) , b_N-1 is generated. M represents the size of the information bits, and N represents the size of the coding bits. The information bits include uplink control information (UCI), for example, multiple ACK / NACKs for a plurality of data (or PDSCHs) received through a plurality of DL CCs. Here, the information bits a_0, a_1, ... , a_M-1 are joint-coded regardless of the type / number / size of the UCI constituting the information bits. For example, when the information bits include multiple ACK / NACK for a plurality of DL CCs, channel coding is performed for each DL CC and not for individual ACK / NACK bits, but for all bit information, A single code word is generated. Channel coding may include but is not limited to simple repetition, simplex coding, Reed Muller coding, punctured RM coding, tail-biting convolutional coding (TBCC), low-density parity- check) or turbo-coding. Although not shown, coding bits may be rate-matched in consideration of modulation order and resource amount. The rate matching function may be included as part of the channel coding block or through a separate functional block.

The modulator comprises coding bits b_0, b_1,... modulates the modulation symbols c_0, c_1,... Create c_L-1. L represents the size of the modulation symbol. The modulation method is performed by modifying the magnitude and phase of the transmission signal. The modulation method includes, for example, n-PSK (Phase Shift Keying) and n-QAM (Quadrature Amplitude Modulation) (n is an integer of 2 or more). Specifically, the modulation method may include BPSK (Binary PSK), Quadrature PSK (QPSK), 8-PSK, QAM, 16-QAM, 64-QAM, and the like.

The divider divides the modulation symbols c_0, c_1,... , c_L-1 is divided into slots. The order / pattern / method for dividing a modulation symbol into each slot is not particularly limited. For example, the frequency divider can divide the modulation symbols into slots in order from the front (local type). In this case, as shown, modulation symbols c_0, c_1, ... , c_L / 2-1 is divided into slot 0 and modulation symbols c_L / 2, c_L / 2 + 1, ... , c_L-1 may be divided into slot 1. In addition, modulation symbols may be interleaved (or permutated) upon dispensing into each slot. For example, an even-numbered modulation symbol may be divided into slot 0 and an odd-numbered modulation symbol may be divided into slot 1. The modulation process and the dispensing process can be reversed.

A DFT precoder performs DFT precoding (e.g., 12-point DFT) on the modulation symbols that are divided into each slot to produce a single carrier waveform. Referring to the figure, modulation symbols divided into slot 0 are c_0, c_1,... , c_L / 2-1 is the DFT symbol d_0, d_1, ... , d_L / 2-1, and modulated symbols c_L / 2, c_L / 2 + 1, ..., , c_L-1 is the DFT symbol d_L / 2, d_L / 2 + 1, ... , DFT is precoded with d_L-1. DFT precoding may be replaced by a corresponding linear operation (e.g., walsh precoding).

A spreading block spreads the DFT-performed signal at the SC-FDMA symbol level (time domain). Time-domain spreading at the SC-FDMA symbol level is performed using a spreading code (or spreading sequence). The spreading code includes a quasi-orthogonal code and an orthogonal code. Quasi-orthogonal codes include, but are not limited to, PN (Pseudo Noise) codes. Orthogonal codes include, but are not limited to, Walsh codes, DFT codes. Orthogonal Code (OC) may be mixed with an orthogonal sequence, an Orthogonal Cover (OC) and an Orthogonal Cover Code (OCC). Although the present specification focuses on orthogonal codes as a representative example of spreading codes for ease of explanation, it should be noted that orthogonal codes may be replaced with quasi-orthogonal codes by way of example. The maximum value of the spreading code size (or spreading factor (SF)) is limited by the number of SC-FDMA symbols used for control information transmission. For example, if four SC-FDMA symbols in one slot are used for control information transmission, (quasi) orthogonal codes of length 4 (w0, w1, w2, w3) may be used for each slot. SF denotes the spread of control information, and may be related to a multiplexing order of an MS or an antenna multiplexing order. SF is 1, 2, 3, 4, ... And may be defined in advance between the BS and the MS or informed to the MS through DCI or RRC signaling. For example, when puncturing one of the SC-FDMA symbols for control information to transmit the SRS, a spreading code having SF reduced (for example, SF = 3 instead of SF = 4) may be applied to the control information of the corresponding slot. have.

The signal generated through the above process is mapped to a subcarrier in the PRB, and then converted into a time domain signal through the IFFT. A CP is added to the time domain signal, and the generated SC-FDMA symbol is transmitted through the RF end.

Assuming a case of transmitting ACK / NACK for five DL CCs, each process is illustrated in more detail. If each DL CC is capable of transmitting two PDSCHs, the ACK / NACK bit may be 12 bits if it includes a DTX state. Assuming QPSK modulation and SF = 4 time spreading, the coding block size (after rate matching) may be 48 bits. The coded bits are modulated into 24 QPSK symbols, and the generated QPSK symbols are divided into 12 slots. In each slot, 12 QPSK symbols are converted into 12 DFT symbols through a 12-point DFT operation. Twelve DFT symbols in each slot are spread and mapped to four SC-FDMA symbols using SF = 4 spreading code in the time domain. The coding rate is 0.0625 (= 12/192) since 12 bits are transmitted through [2 bits * 12 subcarriers * 8 SC-FDMA symbols]. In addition, when SF = 4, up to four terminals may be multiplexed per 1 PRB.

The signal processing described with reference to FIG. 29A is an example, and a signal mapped to the PRB in FIG. 29A may be obtained through various equivalent signal processing. 29B to 29G illustrate signal processing procedures equivalent to those illustrated in FIG. 29A.

FIG. 29B is a reversed order of processing of the DFT precoder and the spreading block in FIG. 29A. In FIG. 29A, the function of the spreading block is the same as multiplying the DFT symbol string output from the DFT precoder by a specific constant at the SC-FDMA symbol level, and thus the values of the signals mapped to the SC-FDMA symbol are the same even if their order is changed. . Therefore, the signal processing for PUCCH format 3 can be performed in the order of channel coding, modulation, division, spreading, and DFT precoding. In this case, the dispensing process and the spreading process can be performed by one functional block. As an example, each modulation symbol may be spread at the SC-FDMA symbol level simultaneously with the division while dividing the modulation symbols into the respective slots. As another example, when modulation symbols are divided into respective slots, each modulation symbol may be copied to correspond to the size of a spreading code, and each of the modulation symbols and each element of the spreading code may be multiplied one-to-one. Therefore, the modulation symbol streams generated for each slot are spread with a plurality of SC-FDMA symbols at the SC-FDMA symbol level. Thereafter, the complex symbol streams corresponding to the respective SC-FDMA symbols are DFT precoded on a SC-FDMA symbol basis.

FIG. 29C changes the processing order of the modulator and divider in FIG. 29A. Accordingly, the process for PUCCH format 3 may be performed by joint channel coding and division at a subframe level, followed by modulation, DFT precoding, and spreading at each slot level.

FIG. 29D further changes the processing order of the DFT precoder and the spreading block in FIG. 29C. As mentioned above, the function of the spreading block is the same as multiplying the DFT symbol sequence output from the DFT precoder by a specific constant at the SC-FDMA symbol level, so that even if their order is changed, the value of the signal mapped to the SC- Do. Therefore, the signal processing for PUCCH format 3 performs joint channel coding and frequency division at the subframe level, and modulation is performed at each slot level. The modulation symbol sequence generated for each slot is spread into a plurality of SC-FDMA symbols at the SC-FDMA symbol level, and the modulation symbol string corresponding to each SC-FDMA symbol is in the order of DFT precoding in units of SC-FDMA symbols. In this case, the modulation process and the spreading process may be performed by one functional block. In one example, while modulating the coded bits, the generated modulation symbols may be immediately spread at the SC-FDMA symbol level. As another example, the modulation symbols generated at the time of modulating the coding bits may be copied corresponding to the size of the spreading code, and the respective elements of these modulation symbols and the spreading code may be multiplied one by one.

FIG. 29E illustrates a case where PUCCH format 3 is applied to a structure of PUCCH format 2 (standard CP), and FIG. 29F illustrates a case where PUCCH format 3 is applied to a structure of PUCCH format 2 (extended CP). The basic signal processing procedure is the same as described with reference to Figs. 29A to 29D. As the PUCCH format 2 structure of the existing LTE is reused, the number / locations of the UCI SC-FDMA symbols and the RS SC-FDMA symbols in the PUCCH format 3 are different from those of FIG. 29A.

Table 14 shows the positions of RS SC-FDMA symbols in the PUCCH format 3 shown. In the case of the standard cyclic prefix, seven SC-FDMA symbols in the slot are assumed (index: 0 to 6), and in the case of the extended cyclic prefix, six SC-FDMA symbols in the slot are assumed (index: 0 to 5).

Here, the RS may inherit the structure of the existing LTE. For example, the RS sequence may be defined by the cyclic shift of the base sequence (see Equation 1).

에 따라 다중화 용량이 결정된다. 구체적으로, 다중화 용량은

로 주어진다. 예를 들어,

,

,

인 경우의 다중화 용량은 각각 12, 6, 4 이다. 도 29e～29f의 경우, UCI 데이터 파트의 다중화 용량은 SF=5로 인해 5인 반면, RS 파트의 다중화 용량은

인 경우 4가 된다. 전체 다중화 용량은 둘 중에서 작은 것에 제한이 걸려서 4로 된다.On the other hand, the UCI data part has a multiplexing capacity of 5 due to SF = 5. However, the RS part is a cyclic shift interval

The multiplexing capacity is determined. Specifically, the multiplexing capacity

. E.g,

,

,

The multiplexing capacity in the case of is 12, 6 and 4, respectively. 29E to 29F, the multiplexing capacity of the UCI data part is 5 due to SF = 5, while the multiplexing capacity of the RS part is

If is 4. The total multiplexing capacity is limited to the smaller of the two and becomes four.

인 경우에도 RS 파트의 다중화 용량이 8이 되어 UCI 데이터 파트의 다중화 용량을 손실시키지 않는다. RS를 위한 직교 코드 커버는 이로 제한되는 것은 아니지만 [y1 y2]=[1 1], [1 -1]의 왈쉬 커버, 또는 이의 선형 변환 형태(예, [j j] [j -j], [1 j] [1 -j], 등)를 포함한다. y1은 슬롯 내에서 첫 번째 RS SC-FDMA 심볼에 적용되고, y2는 슬롯 내에서 두 번째 RS SC-FDMA 심볼에 적용된다.30 illustrates a structure of PUCCH format 3 with increased multiplexing capacity. Referring to FIG. 30, SC-FDMA symbol level spreading is applied to an RS part in a slot. Because of this. The multiplexing capacity of the RS part doubles. In other words,

In this case, the multiplexing capacity of the RS part is 8, so that the multiplexing capacity of the UCI data part is not lost. Orthogonal code cover for RS is not limited to this, but Walsh cover of [y1 y2] = [1 1], [1 -1], or a linear transform form thereof (e.g. [jj] [j -j], [1] j] [1-j], etc.). y1 is applied to the first RS SC-FDMA symbol in the slot, and y2 is applied to the second RS SC-FDMA symbol in the slot.

31 shows a structure of another PUCCH format 3 with increased multiplexing capacity. If slot-level frequency hopping is not performed, the multiplexing capacity may be doubled again by additionally performing spreading or covering (eg, Walsh covering) on a slot basis. In the case of slot-level frequency hopping, if Walsh covering is applied on a slot basis, orthogonality may be broken due to a difference in channel conditions experienced in each slot. Slot unit spreading code (e.g., orthogonal code cover) for RS is not limited to, but Walsh cover of [x1 x2] = [1 1], [1 -1], or a linear transform form thereof (e.g. [jj] [j -j], [1 j] [1 -j], etc.). x1 applies to the first slot and x2 applies to the second slot. Although the figure shows that after spreading (or covering) at the slot level, spreading (or covering) is performed at the SC-FDMA symbol level, these orders may be reversed.

The signal processing procedure of the PUCCH format 3 will be described using an equation. For convenience, assume a case of using an OCC having a length of 5 (eg, FIGS. 29E to 31).

은 하기 식에 의해 생성될 수 있다.First, bit blocks b (0), ..., b ( M _bit -1) are scrambled with a terminal-specific scrambling sequence. Bit blocks b (0), ..., b ( M _bit -1) are coded bits b_0, b_1, ... in FIG. , b_N-1. Bit block b (0), ..., b ( M _bit -1) includes at least one of the ACK / NACK bit, CSI bit, SR bit. Scrambled bit block

Can be produced by the following formula.

는 스크램블링 시퀀스를 나타낸다.

가 길이-31 골드 시퀀스에 의해 정의되는 의사-랜덤 시퀀스를 포함하고 하기 식에 따라 생성될 수 있다. mod 는 모듈로(modulo) 연산을 나타낸다.here,

Represents a scrambling sequence.

And includes a pseudo-random sequence defined by the length-31 gold sequence and can be generated according to the following equation. mod stands for modulo operation.

로 초기화된다. 두 번째 m-시퀀스의 초기화는

로 주어진다.

는 매 서브프레임의 시작 시에

로 초기화될 수 있다.

는 무선 프레임 내에서의 슬롯 번호이다.

은 물리 계층 셀 식별자(physical layer cell identity)이다.

는 무선 네트워크 임시 식별자(Radio network temporary identifier)이다.Where N _C = 1600. The first m-sequence is

Is initialized to Initialization of the second m-sequence

.

At the start of every subframe

Lt; / RTI >

Is the slot number in the radio frame.

Is a physical layer cell identity.

Is a Radio network temporary identifier.

이다. 복소 변조 심볼 블록 d(0),...,d(M _symb -1) 은 도 29a의 변조 심볼 c_0, c_1, …, c_N-1에 대응한다.Scrambled bit block Is modulated, and a complex modulation symbol block d (0), ..., d ( M _symb -1) is generated. In QPSK modulation,

to be. The complex modulation symbol blocks d (0), ..., d ( M _symb -1) are the modulation symbols c_0, c_1,... , c_N-1.

를 이용하여 블록-방식(block-wise) 확산된다. 하기 식에 의해

개의 복소 심볼 세트가 생성된다. 하기 식에 의해 도 29b의 분주/확산 과정이 이뤄진다. 각각의 복소 심볼 세트는 하나의 SC-FDMA 심볼에 대응하며

(예, 12)개의 복소 변조 값을 갖는다.The complex modulation symbol blocks d (0), ..., d ( M _symb -1) are orthogonal sequences

Using block-wise spread. By the following formula

Complex symbol sets are generated. The dispensing / diffusion process of FIG. 29B is performed by the following equation. Each complex symbol set corresponds to one SC-FDMA symbol

(E.g., 12) complex modulation values.

과

은 각각 슬롯 0 및 슬롯 1에서 PUCCH 전송에 사용되는 SC-FDMA 심볼의 개수에 해당한다. 노멀 PUCCH 포맷 3을 사용하는 경우

이다. 쇼튼드 PUCCH 포맷 3을 사용하는 경우

,

이다.

및

는 각각 슬롯 0과 슬롯 1에 적용되는 직교 시퀀스를 나타내며 하기 표 15에 의해 주어진다.

는 직교 시퀀스 인덱스 (혹은 직교 코드 인덱스)를 나타낸다.

는 내림(flooring) 함수를 나타낸다.

는

로 주어질 수 있다.

는 수학식 11에 의해 주어질 수 있고, 매 무선 프레임의 초기에

로 초기화될 수 있다.here,

and

Corresponds to the number of SC-FDMA symbols used for PUCCH transmission in slot 0 and slot 1, respectively. When using normal PUCCH format 3

to be. When using Shoton PUCCH format 3

,

to be.

And

Denotes an orthogonal sequence applied to slot 0 and slot 1, respectively, and is given by Table 15 below.

Denotes an orthogonal sequence index (or an orthogonal code index).

Represents a flooring function.

The

Lt; / RTI >

Can be given by Equation 11, and at the beginning of every radio frame

Lt; / RTI >

와 직교 시퀀스

를 나타낸다.Table 15 shows the sequence index

And orthogonal sequences

Indicates.

직교 시퀀스 (혹은 코드)는 하기 식에 의해 생성된다.In Table 15,

An orthogonal sequence (or code) is generated by the following equation.

에 의해 식별된다. 예를 들어,

는

으로 주어질 수 있다.

는 SCell PDCCH의 TPC(Transmit Power Control) 필드를 통해 지시될 수 있다. 보다 구체적으로, 각 슬롯을 위한

는 하기 식에 의해 주어질 수 있다.Meanwhile, the resource for PUCCH format 3 is a resource index

Lt; / RTI > E.g,

The

Can be given by

May be indicated through a TPC (Transmit Power Control) field of the SCell PDCCH. More specifically, for each slot

Can be given by the following equation.

은 슬롯 0을 위한 시퀀스 인덱스 값(

)을 나타내고,

은 슬롯 1을 위한 시퀀스 인덱스 값(

)을 나타낸다. 노멀 PUCCH 포맷 3의 경우

이다. 쇼튼드 PUCCH 포맷 3의 경우

,

이다.here,

Is the sequence index value for slot 0 (

),

Is the sequence index value for slot 1 (

). In case of normal PUCCH format 3

to be. For shortened PUCCH format 3

,

to be.

The block spread complex symbol set may be cyclic shifted according to the following equation.

는 무선 프레임 내의 슬롯 번호를 나타내고

은 슬롯 내에서 SC-FDMA 심볼 번호를 나타낸다.

는 수학식 12에서 정의한 바와 같다.

이다.here,

Indicates the slot number in the radio frame

Denotes an SC-FDMA symbol number within a slot.

Is as defined in Equation 12.

to be.

이 생성된다.Each cyclic shifted complex symbol set is transform precoded according to the following equation. As a result, the complex symbol block

Is generated.

는 전력 제어 이후에 물리 자원에 맵핑된다. PUCCH는 서브프레임 내의 각 슬롯에서 하나의 자원 블록을 사용한다. 해당 자원 블록 내에서,

는 RS 전송(표 14 참조)에 사용되지 않는 자원 요소 (

) 에 맵핑된다. 서브프레임의 첫 번째 슬롯부터 시작해서, k, 이후 l, 이후 슬롯 번호가 증가하는 순으로 맵핑이 이뤄진다. k는 부반송파 인덱스를 나타내고, l은 슬롯 내의 SC-FDMA 심볼 인덱스를 나타낸다.Complex symbol block

Is mapped to a physical resource after power control. PUCCH uses one resource block in each slot in a subframe. Within that resource block,

The resource elements that are not used for RS transmission (see Table 14) (

) . Starting from the first slot of the subframe, mapping is performed in order of k, then l, and then the slot number increases. k denotes a subcarrier index and l denotes an SC-FDMA symbol index in a slot.

Next, the UL transmission mode configuration will be described. There are two main transmission modes for PUCCH. One is single antenna transmission mode and the other is multi antenna transmission mode. The single antenna transmission mode is a method in which the terminal transmits a signal through a single antenna during PUCCH transmission or recognizes the terminal as if the terminal transmits a signal through a single antenna from a receiver (eg, a base station). In the latter case, the terminal may use a technique such as virtualization (eg, PVS, antenna selection, CDD, etc.) while transmitting a signal through multiple antennas. The multi-antenna transmission mode may mean that the terminal transmits a signal to a base station using transmission diversity or MIMO through the multiple antennas. SORTD (Spatial Orthogonal Resource Transmit Diversity) can be applied as a transmission diversity scheme used at this time. In the present specification, for convenience, the multi-antenna transmission mode is referred to as a SORTD mode unless otherwise specified.

32 illustrates a signal processing block / procedure for SORTD. The basic procedure except for the process for multi-antenna transmission is the same as described with reference to FIGS. 29 to 31. Referring to Fig. 32, modulation symbols c_0,... , c_23 is transmitted through a given resource (eg, OC, PRB, or a combination thereof) for each antenna port after DFT precoding. In this example, although one DFT operation is shown for a plurality of antenna ports, the DFT operation may be performed for each antenna port. Further, the DFT precoded symbols d_0,... Although, d_23 is illustrated as being transmitted on the second OC / PRB as copied, the DFT precoded symbols d_0,... A modified form of, d_23 (eg, conjugate complex or scaling) may be sent over the second OC / PRB. For example, to guarantee orthogonality between PUCCH signals transmitted through different antenna ports, [OC ⁽⁰⁾ ≠ OC ⁽¹⁾ ; PRB ⁽⁰⁾ = PRB ⁽¹⁾ ], [OC ⁽⁰⁾ = OC ⁽¹⁾ ; PRB ⁽⁰⁾ ≠ PRB ⁽¹⁾ ], [OC ⁽⁰⁾ ≠ OC ⁽¹⁾ ; PRB ⁽⁰⁾ ≠ PRB ⁽¹⁾ ] is possible. Here, the superscript represents an antenna port number or a value corresponding thereto.

33 is a diagram schematically describing a SORTD operation. Referring to FIG. 33, the terminal acquires a first resource index and a second resource index (S3310). Here, the resource index (or resource value) indicates a PUCCH resource index (or PUCCH resource value), preferably a PUCCH format 3 resource index (or PUCCH format 3 resource value). Step S3310 may consist of a plurality of steps that differ in time. A method of obtaining the first resource index and the second resource index will be described in detail later. Thereafter, the terminal transmits the PUCCH signal using the PUCCH resource corresponding to the first resource index, and transmits it through a first antenna (port) (S3320). In addition, the UE transmits a PUCCH signal using a PUCCH resource corresponding to the second resource index, and transmits it through a second antenna (port) (S3330). Steps S3320 and S3330 are performed in the same subframe.

The PUCCH signal may include a hybrid automatic repeat request acknowledgment (HARQ-ACK). HARQ-ACK includes a response to the downlink signal (eg, ACK, NACK, DTX or NACK / DTX). If the PUCCH signal includes HARQ-ACK, although not shown, the process of FIG. 33 further includes a process of receiving a downlink signal. Receiving a downlink includes receiving a PDCCH for downlink scheduling and receiving a PDSCH corresponding to the PDCCH. For PUCCH format 3 transmission, at least one of PDCCH and PDSCH may be received on the SCell.

As described with reference to FIGS. 32 to 33, multiple antenna (port) transmission (eg, SORTD) requires a large amount of orthogonal resources compared to single antenna (port) transmission. For example, 2Tx SORTD transmission requires twice the orthogonal resources compared to single antenna (port) transmission. Therefore, the antenna (port) transmission mode is directly connected to the number of terminals that can be multiplexed in the resource region for the PUCCH, that is, multiplexing capacity. Therefore, the base station needs to flexibly set the antenna (port) transmission mode according to the number of terminals with which it is communicating. For example, when the number of terminals to be accommodated by the base station is small, a multi-antenna (port) transmission mode using multi-resource (eg, SORTD mode) may be configured for each terminal. In this case, a single antenna (port) transmission mode using a single resource can be configured. The antenna (port) transmission mode for PUCCH transmission may be set by RRC signaling. In addition, the antenna (port) transmission mode may be set independently for each PUCCH format.

Hereinafter, the present invention proposes various methods for the resource allocation method (see FIG. 33, step S3310) in an environment using multiple resources for multiple antenna (port) transmission in PUCCH format 3. For example, when 2Tx SORTD is applied to PUCCH format 3, two orthogonal resources are required, so an allocation rule for two orthogonal resources is required.

)를 상위 계층(예, RRC) 시그널링을 통해 미리 명시적으로 할당 받을 수 있다. 이후, 기지국은 단말에게 A/N 자원 지시자(ACK/NACK Resource Indicator, ARI)(다른 말로, HARQ-ACK 자원 값)를 전송하고, 단말은 ARI를 통해 실제 PUCCH 전송에 사용되는 PUCCH 자원 값

을 결정할 수 있다. PUCCH 자원 값

은 PUCCH 자원(예, OC, PRB)으로 맵핑된다. ARI는 상위 계층에 의해 사전에 주어진 PUCCH 자원 값 후보(들) (혹은 PUCCH 자원 값 후보 세트) 중에서 어느 것을 사용할 것인지 직접 지시하는 용도로 사용될 수 있다. 구현 예에 따라, ARI는 (상위 계층에 의해) 시그널링된 PUCCH 자원 값 대비 오프셋 값을 나타낼 수 있다. SCell로 전송되는 PDSCH-스케줄링 PDCCH (SCell PDCCH)내의 TPC(Transmit Power Control) 필드가 ARI 용도로 재사용될 수 있다. 한편, PCell로 전송되는 PDSCH-스케줄링 PDCCH (PCell PDCCH)의 TPC 필드는 본래 목적인 PUCCH 전력 제어 용도로 사용될 수 있다. 3GPP Rel-10의 경우, PCell의 PDSCH는 SCell로부터 크로스-캐리어 스케줄링이 허용되지 않으므로 PDSCH를 PCell에서만 수신한다는 의미는 PDCCH가 PCell에서만 수신한다는 의미와 등가일 수 있다.First, single antenna (port) transmission requiring one orthogonal resource will be described. Resource allocation for PUCCH format 3 is based on explicit resource allocation. In more detail, the UE may perform PUCCH resource value candidate (s) (or PUCCH resource value candidate set) for PUCCH format 3 (eg,

) May be explicitly assigned in advance through higher layer (eg, RRC) signaling. Subsequently, the base station transmits an A / N Resource Indicator (ARI) (ACK / NACK Resource Indicator, ARI) (in other words, HARQ-ACK resource value) to the terminal, and the terminal transmits the PUCCH resource value used for actual PUCCH transmission through the ARI.

Can be determined. PUCCH resource value

Is mapped to PUCCH resources (eg, OC, PRB). The ARI may be used for directly indicating which of the PUCCH resource value candidate (s) (or PUCCH resource value candidate set) previously given by the upper layer to use. According to an implementation example, the ARI may indicate an offset value relative to the signaled PUCCH resource value (by a higher layer). The transmit power control (TPC) field in the PDSCH-scheduling PDCCH (SCell PDCCH) transmitted to the SCell may be reused for ARI purposes. Meanwhile, the TPC field of the PDSCH-scheduling PDCCH (PCell PDCCH) transmitted to the PCell may be used for PUCCH power control purposes. In the case of 3GPP Rel-10, since the PDSCH of the PCell does not allow cross-carrier scheduling from the SCell, the reception of the PDSCH only in the PCell may be equivalent to the reception of the PDCCH only in the PCell.

In detail, when PUCCH resource (s) for A / N are preliminarily allocated by RRC, a resource used for actual PUCCH transmission may be determined as follows.

The PDCCH corresponding to the PDSCH on the SCell (s) (or the PDCCH on the SCell (s) corresponding to the PDSCH) uses one of the PUCCH resource (s) configured by the RRC using an ARI (in other words, a HARQ-ACK resource value). Instruct.

If the PDCCH corresponding to the PDSCH on the SCell (s) (or the PDCCH on the SCell (s) corresponding to the PDSCH) is not detected and the PDSCH is received on the PCell, one of the following may apply:

기존 3GPP Rel-8 에 따른 묵시적 A/N PUCCH 자원(즉, PDCCH 를 구성하는 가장 작은 CCE 를 이용하여 얻어진 PUCCH 포맷 1a/1b 자원)이 사용된다.

An implicit A / N PUCCH resource (ie, PUCCH format 1a / 1b resource obtained using the smallest CCE constituting the PDCCH) according to the existing 3GPP Rel-8 is used.

PCell 상의 PDSCH 에 대응하는 PDCCH (혹은 PDSCH 에 대응하는 PCell 상의 PDCCH)가 RRC 에 의해 구성된 자원(들) 중 하나를 ARI (다른 말로, HARQ-ACK 자원 값)를 이용하여 지시한다.

The PDCCH corresponding to the PDSCH on the PCell (or the PDCCH on the PCell corresponding to the PDSCH) indicates one of the resource (s) configured by RRC using ARI (in other words, HARQ-ACK resource value).

The UE assumes that PDCCHs corresponding to PDSCHs on SCells (or PDCCHs on SCell (s) corresponding to PDSCH) all have the same ARI (in other words, HARQ-ACK resource value).

ARI (in other words, HARQ-ACK resource value) may be X bits and X = 2 when reusing the TPC field of the SCell PDCCH. For convenience, assume X = 2.

Hereinafter, a method of allocating a resource for supporting various antenna (port) transmission modes in case of transmitting control information using PUCCH format 3 will be described.

,

,

,

를 RRC 시그널링(예, 4개의 RRC 시그널링)을 통해 할당 받을 수 있다. 또한, 단말은 네 개의 PUCCH 자원 값으로 구성된 하나의 세트 {

}를 하나의 RRC 시그널링으로 할당 받을 수 있다. 이후, 단말은 PDCCH 신호를 검출하고 그에 대응하는 PDSCH 신호를 수신할 수 있다. PDCCH 신호 및 PDSCH 신호 중 적어도 하나는 SCell을 통해 수신될 수 있다. 이후, 단말은 PDCCH 신호 내의 ARI (다른 말로, HARQ-ACK 자원 값)의 비트 값에 따라 실제 PUCCH 전송에 사용한 PUCCH 자원 값

을 결정할 수 있다. 결정된 PUCCH 자원 값은 PUCCH 자원 (예, OC, PRB)으로 맵핑된다. UCI (예, PDSCH에 대한 HARQ-ACK)는 PUCCH 자원 값으로부터 맵핑된 PUCCH 자원을 이용하여 네트워크(예, 기지국, 중계기)로 전송된다. 표 16에 상술한 방안을 예시하였다.As an example, the UE has four orthogonal resources for PUCCH format 3, for example, PUCCH resource values.

,

,

,

May be allocated through RRC signaling (eg, four RRC signaling). In addition, the UE is a set of four PUCCH resource values {

} May be allocated to one RRC signaling. Thereafter, the UE may detect the PDCCH signal and receive a PDSCH signal corresponding thereto. At least one of the PDCCH signal and the PDSCH signal may be received through the SCell. Thereafter, the UE uses the PUCCH resource value used for the actual PUCCH transmission according to the bit value of the ARI (in other words, the HARQ-ACK resource value) in the PDCCH signal.

Can be determined. The determined PUCCH resource value is mapped to a PUCCH resource (eg, OC, PRB). UCI (eg, HARQ-ACK for PDSCH) is transmitted to a network (eg, base station, repeater) using PUCCH resources mapped from PUCCH resource values. Table 16 illustrates the method described above.

Here, HARQ-ACK indicates a HARQ ACK / NACK / DTX response for the downlink transport block. HARQ ACK / NACK / DTX response includes ACK, NACK, DTX, NACK / DTX.

Assuming that the ARI (in other words, the HARQ-ACK resource value) is transmitted using the TPC field of the SCell PDCCH, when the UE receives the PDSCH only from the PCell (or the PDCCH only from the PCell), the ARI and the PUCCH resource associated with the ARI The problem is that the value is unknown. Therefore, when the corresponding event occurs, the fall-back using the existing 3GPP Rel-8 / 9 PUCCH resources and Rel-8 / 9 PUCCH formats 1a / 1b may be applied.

Next, a method for allocating a plurality of orthogonal resources for transmission diversity (eg, SORTD) will be described. For convenience, assume two orthogonal resources are used.

In the following description, additional resources (sets) necessary for multi-antenna port transmission may be allocated in consideration of the capability of the terminal or may be allocated in consideration of the actual transmission mode of the terminal. For example, when the terminal supports multi-antenna port transmission, the base station preallocates the terminal with a first resource (set) for single antenna port transmission and a second resource (set) for multi-antenna port transmission in advance. Can be. Thereafter, the terminal may use the first resource (set) when operating in the single antenna port transmission mode, and use the first resource (set) and the second resource (set) when operating in the multi-antenna port transmission mode. have. In addition, the base station may allocate a second resource (set) for multi-antenna port transmission in consideration of the current transmission mode of the terminal. For example, after instructing the terminal to operate in the multi-antenna port transmission mode, the base station may allocate a second resource (set) for the terminal. That is, the terminal may be additionally allocated the first resource (set) only after the first resource (set) is set in the multi-antenna port transmission mode.

For example, the terminal basically receives allocation information indicating a plurality of PUCCH resources for the antenna port p 0 and performs antenna port p 1 only when the multi-antenna port transmission is enabled or the multi-antenna port transmission mode is set. Allocation information indicating a plurality of PUCCH resources for the terminal may be additionally received.

,

,

,

,

,

,

,

를 RRC 시그널링(예, 8개의 RRC 시그널링)을 통해 할당 받을 수 있다. 또한, 단말은 8개의 PUCCH 자원 값으로 구성된 하나의 세트{

} 를 하나의 RRC 시그널링을 통해 할당 받을 수 있다. 이후, 단말은 PDCCH 신호를 검출하고 그에 대응하는 PDSCH 신호를 수신할 수 있다. PDCCH 신호 및 PDSCH 신호 중 적어도 하나는 SCell을 통해 수신될 수 있다. 이후, 단말은 PDCCH 신호 내의 ARI (다른 말로, HARQ-ACK 자원 값)의 비트 값에 따라 실제 PUCCH 전송에 사용한 PUCCH 자원 값

을 결정할 수 있다. p는 안테나 포트 번호 또는 그와 관련된 값을 나타낸다. 결정된 PUCCH 자원 값은 PUCCH 자원 (예, OC, PRB)으로 맵핑된다. UCI (예, PDSCH에 대한 HARQ-ACK)는 PUCCH 자원 값으로부터 맵핑된 PUCCH 자원을 이용하여 네트워크 (예, 기지국, 중계기)로 전송된다.In this case, the UE may use eight orthogonal resources, for example, PUCCH resource values for PUCCH format 3.

,

,

,

,

,

,

,

May be allocated through RRC signaling (eg, eight RRC signaling). In addition, the terminal is a set of 8 PUCCH resource values {

} May be allocated through one RRC signaling. Thereafter, the UE may detect the PDCCH signal and receive a PDSCH signal corresponding thereto. At least one of the PDCCH signal and the PDSCH signal may be received through the SCell. Thereafter, the UE uses the PUCCH resource value used for the actual PUCCH transmission according to the bit value of the ARI (in other words, the HARQ-ACK resource value) in the PDCCH signal.

Can be determined. p represents an antenna port number or a value associated with it. The determined PUCCH resource value is mapped to a PUCCH resource (eg, OC, PRB). UCI (eg, HARQ-ACK for PDSCH) is transmitted to a network (eg, base station, repeater) using PUCCH resources mapped from PUCCH resource values.

In the multi-antenna port transmission mode, one ARI is used to indicate a plurality of PUCCH resource values. The plurality of PUCCH resource values indicated by the ARI are each mapped to PUCCH resources for the corresponding antenna port. Therefore, depending on whether the antenna port transmission mode is a single / multi antenna port mode, the ARI may indicate one or a plurality of PUCCH resource values. Table 17 illustrates the method described above.

를 결정할 수 있다. 결정된 PUCCH 자원 값은 해당 안테나 포트를 위한 PUCCH 자원 (예, OC, PRB)으로 맵핑된다. p는 안테나 포트 번호 또는 그와 관련된 값을 나타낸다. 표 18에 본 방안을 예시하였다.As another example, the UE may be allocated four orthogonal resources (eg, PUCCH resource values) for each antenna port through RRC signaling as follows. Thereafter, the UE may detect the PDCCH signal and receive a PDSCH signal corresponding thereto. At least one of the PDCCH signal and the PDSCH signal may be received through the SCell. Thereafter, the terminal according to the bit value of the ARI (in other words, HARQ-ACK resource value) in the PDCCH signal, the final PUCCH resource value to be used for each antenna port

Can be determined. The determined PUCCH resource value is mapped to a PUCCH resource (eg, OC, PRB) for the corresponding antenna port. p represents an antenna port number or a value associated with it. Table 18 illustrates this approach.

안테나 포트 p0 (예, p0=0)을 위해 사용됨-

Used for antenna port p0 (eg p0 = 0)

안테나 포트 p1 (예, p1=1)을 위해 사용됨-

Used for antenna port p1 (eg p1 = 1)

Although not limited thereto, as described above, the terminal basically receives allocation information indicating a plurality of PUCCH resources for the antenna port p 0, and when multi-antenna port transmission is possible or the multi-antenna port transmission mode is set. Only, antenna port p 1 Allocation information indicating a plurality of PUCCH resources for the UE may be additionally received.

}를 하나의 RRC 시그널링을 통해 할당 받되, 다중 안테나 포트 전송이 가능하거나 상기 다중 안테나 포트 전송 모드가 설정된 경우에 두 안테나 포트를 위한 여덟 개의 직교 자원, 예를 들어 PUCCH 자원 값 {

}를 모두 하나의 RRC 시그널링을 통해 할당 받을 수 있다. ARI의 비트 값에 따라, 단말은 안테나 포트 별로 사용할 최종 PUCCH 자원 값

및 그에 대응되는 PUCCH 자원을 결정할 수 있다. 표 19에 상술한 방안을 예시하였다.In addition, the UE is basically four orthogonal resources for transmitting a single antenna port, for example, PUCCH resource value {

} Is allocated through one RRC signaling, and when eight antenna ports are transmitted or the multi-antenna port transmission mode is set, eight orthogonal resources for two antenna ports, for example, PUCCH resource values {

} Can be allocated through one RRC signaling. According to the bit value of the ARI, the UE is the last PUCCH resource value to use per antenna port

And PUCCH resources corresponding thereto. Table 19 illustrates the method described above.

Tables 17-19 exemplify a case in which p = p0 portion of the allocation of PUCCH resource values for multiple antenna ports is configured in the same manner as that of a single antenna port. That is, Tables 17-19 assume nested structures. Thus, a single common table can support both single and multiple antenna port transmissions.

With reference to Table 18, the nested structure is illustrated more specifically. In a nested structure, one common table can be used. Table 20 illustrates a common table for single / multi antenna port transmission modes.

은 최종적으로 단일 안테나 포트(예, p0)를 위한 하나의 PUCCH 자원

으로 맵핑된다.When the terminal is set to the single antenna port transmission mode in connection with the PUCCH transmission, Table 20 may be interpreted as shown in Table 21. Therefore, when the terminal is set to the single antenna port transmission mode, the PUCCH resource value indicated by the ARI

Finally, one PUCCH resource for a single antenna port (eg p0)

Is mapped to.

은 최종적으로 다중 안테나 포트(예, p0, p1)를 위한 복수의 PUCCH 자원

,

으로 맵핑된다.When the terminal is set to the multi-antenna port transmission mode in connection with the PUCCH transmission, Table 20 may be interpreted as shown in Table 22. Therefore, when the terminal is set to the multi-antenna port transmission mode, the PUCCH resource value indicated by the ARI

Finally, a plurality of PUCCH resources for multiple antenna ports (eg, p0, p1)

,

Is mapped to.

,

,

,

를 RRC 시그널링(예, 4개 RRC 시그널링)을 통해 할당 받았다고 가정하자. 혹은 단말이 네 개의 PUCCH 자원 값으로 구성된 하나의 세트 {

}를 하나의 RRC 시그널링을 통해 할당 받은 경우를 가정해도 마찬 가지이다. 상술한 바와 같이, ARI의 비트 값에 따라, 단말은 안테나 포트 별로 사용할 최종 PUCCH 자원

을 결정할 수 있다. 상술한 가정 하에, 본 예에 따르면, 네 개의 PUCCH 자원 값을

와

의 두 그룹으로 나눌 수 있다. 이 경우, ARI의 앞의 1비트와 뒤의 1비트가 각각의 그룹에 대한 자원 사용 지시 용도로 활용될 수 있다. 예를 들어, ARI가 b0, b1 (b0, b1은 각각 1 또는 0)으로 구성된다고 가정하자. 이 경우, b0은 group0에서 몇 번째 PUCCH 자원 값을 사용하는 지를 지시하고, b1은 group1에서 몇 번째 PUCCH 자원 값을 사용하는 지를 지시할 수 있다. 또한, group0에서 선택된 PUCCH 자원 값은 안테나 포트 p0를 위한 PUCCH 자원(예, OC, PRB)으로 맵핑되고, group1에서 선택된 자원은 안테나 포트 p1을 위한 PUCCH 자원(예, OC, PRB)으로 맵핑될 수 있다.Transmit Diversity Another example for allocating multiple (eg, two) orthogonal resources for SORTD is described. For example, the UE has four orthogonal resources for PUCCH format 3, for example, PUCCH resource values

,

,

,

Suppose is allocated via RRC signaling (eg, 4 RRC signaling). Or one set of four PUCCH resource values

} May be assumed to be allocated through one RRC signaling. As described above, according to the bit value of the ARI, the terminal is to use the last PUCCH resources per antenna port

Can be determined. Under the above-described assumption, according to this example, four PUCCH resource values

Wow

It can be divided into two groups. In this case, the first 1 bit and the first 1 bit of the ARI may be used for resource usage indication for each group. For example, suppose an ARI consists of b0, b1 (b0, b1 is 1 or 0, respectively). In this case, b0 may indicate which PUCCH resource value to use in group0, and b1 may indicate to which PUCCH resource value to use in group1. In addition, the PUCCH resource values selected in group0 may be mapped to PUCCH resources (eg, OC and PRB) for antenna port p0, and the resources selected in group1 may be mapped to PUCCH resources (eg, OC and PRB) for antenna port p1. have.

,

,

,

를 RRC 시그널링에 의해 할당 받은 경우를 예시하고 있지만, 더 많은 수의 직교 자원이 사용되는 경우에도 적용될 수 있다.Table 23 illustrates the method described above. This scheme uses four PUCCH resource values

,

,

,

Illustrates the case of being allocated by RRC signaling, but may also be applied when a greater number of orthogonal resources are used.

}를 할당 받고, 안테나 포트 p1을 위해 {

}을 할당 받은 경우를 예시한다.Table 23 is equivalent to receiving two signals for each antenna through RRC signaling (a total of four when 2Tx), and indicating that each bit of the ARI indicates a resource used for the corresponding antenna port. Table 24 shows the {

} Is assigned, and for antenna port p1 {

} Is an example of how to get assigned.

In another aspect of the present invention, a method of using a downlink assignment index (DAI) field in the case of a TDD CA will be described. DAI is a value that counts the scheduled PDCCH in the time domain and can be extended to a cell (or CC) domain in a CA. In the PUCCH format 3, since the DAI value is not needed, the DAI can be used for the purpose of the present invention.

For example, PUCCH format 3 resources for the first antenna port (p = p0) may be allocated / determined using ARI, and PUCCH format 3 resources for the second antenna port (p = p1) may be allocated / determined using DAI. have. In case PDCCH of at least one serving cell fails to detect, all of the PDCCH (s) of the serving cell may be limited to have the same DAI value. On the other hand, when the PDSCH is scheduled only in the PCell, the UE may ignore the DAI value of the PCell PDCCH corresponding to the PDSCH, and fall back to the single antenna port mode to transmit the PUCCH.

,

,

,

를 RRC 시그널링을 통해 사전에 할당 받았다고 가정하자. 이후, 단말이 ARI=[00], DAI=[10]를 포함하는 PDCCH 신호를 수신한다고 가정하면,For convenience, the UE may use four orthogonal resources, for example, PUCCH resource values.

,

,

,

Suppose we have been previously assigned to RRC signaling. Subsequently, assuming that the terminal receives a PDCCH signal including ARI = [00] and DAI = [10],

안테나 포트 p0 (예, p0=0)을 위해 사용되고,-

Used for antenna port p0 (e.g. p0 = 0),

안테나 포트 p1 (예, p1=1)을 위해 사용될 수 있다.-

May be used for antenna port p1 (eg p1 = 1).

Table 25 illustrates the method described above.

,

,

,

,

,

,

,

을 RRC 시그널링을 통해 사전에 할당 받았다고 가정해도 동일한 방식으로 적용 가능하다. 예를 들어, 안테나 포트 0을 위해 ARI 값 00,01,10,11이 각각

,

,

,

를 지시하고, 안테나 포트 1을 위해 DAI 값 00,01,10,11이 각각

,

,

,

를 지시할 수 있다.In addition, the UE is the 8 orthogonal resources, for example PUCCH resource value

,

,

,

,

,

,

,

Can be applied in the same way even if it is pre-assigned through RRC signaling. For example, for antenna port 0, the ARI values 00,01,10,11 are

,

,

,

And DAI values 00,01,10,11 for antenna port 1, respectively.

,

,

,

Can be indicated.

As another example, the UE may be allocated four orthogonal resources for each antenna port through RRC signaling as follows.

안테나 포트 p0 (예, p0=0)을 위해 사용됨-

Used for antenna port p0 (eg p0 = 0)

안테나 포트 p1 (예, p1=1)을 위해 사용됨-

Used for antenna port p1 (eg p1 = 1)

,

,

,

를 가르키고, DAI 값 00,01,10,11은 각각

,

,

,

을 가르킬 수 있다.In this case, the ARI values 00,01,10,11 are respectively

,

,

,

, DAI values 00,01,10,11 are respectively

,

,

,

Can point.

34 illustrates a base station and a terminal that can be applied to an embodiment of the present invention. When a relay is included in the wireless communication system, communication is performed between the base station and the relay in the backhaul link, and communication is performed between the relay and the terminal in the access link. Therefore, the base station or the UE ″ illustrated in the figure may be replaced with a relay according to the situation.

Referring to FIG. 34, a wireless communication system includes a base station (BS) 110 and a terminal (UE) 120. Base station 110 includes a processor 112, a memory 114, and a radio frequency (RF) unit 116. The processor 112 may be configured to implement the procedures and / or methods suggested by the present invention. The memory 114 is connected to the processor 112 and stores various information related to the operation of the processor 112. The RF unit 116 is coupled to the processor 112 and transmits and / or receives wireless signals. The terminal 120 includes a processor 122, a memory 124 and an RF unit 126. The processor 122 may be configured to implement the procedures and / or methods proposed by the present invention. The memory 124 is connected with the processor 122 and stores various information related to the operation of the processor 122. The RF unit 126 is coupled to the processor 122 and transmits and / or receives radio signals. The base station 110 and / or the terminal 120 may have a single antenna or multiple antennas.

The embodiments described above are the components and features of the present invention are combined in a predetermined form. Each component or feature shall be considered optional unless otherwise expressly stated. Each component or feature may be implemented in a form that is not combined with other components or features. It is also possible to construct embodiments of the present invention by combining some of the elements and / or features. The order of the operations described in the embodiments of the present invention may be changed. Some configurations or features of certain embodiments may be included in other embodiments, or may be replaced with corresponding configurations or features of other embodiments. It is clear that the claims that are not expressly cited in the claims may be combined to form an embodiment or be included in a new claim by an amendment after the application.

In the present document, the embodiments of the present invention have been mainly described with reference to a signal transmission / reception relationship between a terminal and a base station. This transmission / reception relationship is equally or similarly extended to the signal transmission / reception between the terminal and the relay or between the base station and the relay. The specific operation described herein as being performed by the base station may be performed by its upper node, in some cases. That is, it is apparent that various operations performed for communication with a terminal in a network including a plurality of network nodes including a base station can be performed by a network node other than the base station or the base station. A base station may be replaced by terms such as a fixed station, a Node B, an eNode B (eNB), an access point, and the like. In addition, the terminal may be replaced with terms such as a user equipment (UE), a mobile station (MS), a mobile subscriber station (MSS), and the like.

Embodiments in accordance with the present invention may be implemented by various means, for example, hardware, firmware, software, or a combination thereof. In the case of hardware implementation, an embodiment of the present invention may include one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs) field programmable gate arrays, processors, controllers, microcontrollers, microprocessors, and the like.

In the case of implementation by firmware or software, an embodiment of the present invention may be implemented in the form of a module, procedure, function, etc. that performs the functions or operations described above. The software code can be stored in a memory unit and driven by the processor. The memory unit may be located inside or outside the processor, and may exchange data with the processor by various well-known means.

It will be apparent to those skilled in the art that the present invention may be embodied in other specific forms without departing from the spirit of the invention. Accordingly, the above detailed description should not be construed as limiting in all aspects and should be considered as illustrative. The scope of the invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the invention are included in the scope of the invention.

The present invention can be used in a terminal, a base station, or other equipment of a wireless mobile communication system. Specifically, the present invention can be applied to a method for transmitting uplink control information and an apparatus therefor.

Claims (14)

A method of transmitting control information using a physical uplink control channel (PUCCH) format 3 in a wireless communication system,
Detecting at least one Physical Downlink Control Channel (PDCCH);
Receiving at least one Physical Downlink Shared Channel (PDSCH) signal corresponding to the at least one PDCCH; And
Among the plurality of PUCCH resource values set by the higher layer for the PUCCH format 3, a PUCCH resource value corresponding to a value of a TPC (Transmit Power Control) field of a PDCCH for a PDSCH signal on a SCell (Secondary Cell)

Checking at the physical layer according to the table below,
PUCCH resource value indicated by the TPC field when set to a single antenna port transmission mode

Is mapped to one PUCCH resource for a single antenna port,
PUCCH resource value indicated by the TPC field when the multi-antenna port transmission mode is set

Is mapped to a plurality of PUCCH resources for multiple antenna ports:

Where p represents an antenna port number. The method of claim 1,
When the single antenna port transmission mode is set, the PUCCH resource value

PUCCH resource for antenna port p 0

Mapped to,
When the multi-antenna port transmission mode is set, the PUCCH resource value

PUCCH resource for antenna port p 0

With antenna port p 1 PUCCH resources for

How is it mapped? The method of claim 1,
The value of the TPC field of the PDCCH for the PDSCH signal on the primary cell (PCell) is used to control the transmit power for the PUCCH format 3. The method of claim 1,
If the at least one PDSCH signal includes a plurality of PDSCH signals on an SCell, the plurality of PDCCHs corresponding to the plurality of PDSCHs on the SCell are all set to have the same value of a TPC field. The method of claim 1,
The control information includes a hybrid automatic repeat request acknowledgment (HARQ-ACK) for downlink transmission. The method of claim 1,
Receiving allocation information indicating a plurality of PUCCH resources for antenna port p 0,
The allocation information indicating the plurality of PUCCH resources for the antenna port p 1 is additionally received only when multi-antenna port transmission is possible or the multi-antenna port transmission mode is set. The method of claim 1,
The PUCCH resource value

Transmitting the control information using a PUCCH resource mapped from the. A communication device configured to transmit control information using Physical Uplink Control Channel (PUCCH) format 3 in a wireless communication system,
A radio frequency (RF) unit; And
Includes a processor,
The processor detects one or more Physical Downlink Control Channels (PDCCHs), receives one or more Physical Downlink Shared Channel (PDSCH) signals corresponding to the one or more PDCCHs, and sets a plurality of layers configured by an upper layer for the PUCCH format 3. Of the PUCCH resource values of the PUCCH resource value corresponding to the value of the TPC (Transmit Power Control) field of the PDCCH for the PDSCH signal on the SCell (Secondary Cell)

Are configured to be checked at the physical layer according to the table below,
PUCCH resource value indicated by the TPC field when set to a single antenna port transmission mode

Is mapped to one PUCCH resource for a single antenna port,
PUCCH resource value indicated by the TPC field when the multi-antenna port transmission mode is set

Is a communication device mapped to a plurality of PUCCH resources for multiple antenna ports:

Where p represents an antenna port number. 9. The method of claim 8,
When the single antenna port transmission mode is set, the PUCCH resource value

PUCCH resource for antenna port p 0

Mapped to,
When the multi-antenna port transmission mode is set, the PUCCH resource value

PUCCH resource for antenna port p 0

PUCCH resources for the antenna port p 1

Communication device that is mapped to. 9. The method of claim 8,
And a value of a TPC field of a PDCCH for a PDSCH signal on a primary cell (PCell) is used for controlling transmission power for the PUCCH format 3. 9. The method of claim 8,
And when the at least one PDSCH signal includes a plurality of PDSCH signals on an SCell, a plurality of PDCCHs corresponding to the plurality of PDSCHs on the SCell are all configured to have the same value of a TPC field. 9. The method of claim 8,
The control information includes a Hybrid Automatic Repeat reQuest Acknowledgement (HARQ-ACK) for downlink transmission. 9. The method of claim 8,
The processor is further configured to receive allocation information indicating a plurality of PUCCH resources for antenna port p 0,
The allocation information indicating the plurality of PUCCH resources for the antenna port p 1 is additionally received only when multi-antenna port transmission is possible or the multi-antenna port transmission mode is set. 9. The method of claim 8,
The processor may also determine the PUCCH resource value

And transmit the control information using the PUCCH resources mapped from the.

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